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daxi20:master daxi20:doc daxi20:quic daxi20:https-svcb daxi20:multi-thread-server daxi20:luci-dns-forwarding
daxi20:Release43 daxi20:Release42 daxi20:Release41 daxi20:Release41-RC3 daxi20:Release41-RC2 daxi20:Release41-RC1 daxi20:Release40 daxi20:feature-dns-forwarding daxi20:Release39 daxi20:Release38.1 daxi20:Release38 daxi20:Release37.2 daxi20:Release37.1 daxi20:Release37 daxi20:Release37-RC3 daxi20:Release37-RC2 daxi20:Release37-RC1 daxi20:all-best-ip daxi20:Release36.1 daxi20:Release36 daxi20:Release35 daxi20:Release34 daxi20:Release33 daxi20:Release32 daxi20:Release32-RC4 daxi20:Release32-RC3 daxi20:Release32-RC2 daxi20:Release32-RC1 daxi20:Release31 daxi20:Release30 daxi20:Release29 daxi20:Release28 daxi20:Release27 daxi20:Release26-Special daxi20:Release25 daxi20:Release24 daxi20:Release23 daxi20:Release22 daxi20:Release21 daxi20:Release20 daxi20:Release18
...
compare: daxi20:Release37-RC2
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daxi20:master daxi20:doc daxi20:quic daxi20:https-svcb daxi20:multi-thread-server daxi20:luci-dns-forwarding
daxi20:Release43 daxi20:Release42 daxi20:Release41 daxi20:Release41-RC3 daxi20:Release41-RC2 daxi20:Release41-RC1 daxi20:Release40 daxi20:feature-dns-forwarding daxi20:Release39 daxi20:Release38.1 daxi20:Release38 daxi20:Release37.2 daxi20:Release37.1 daxi20:Release37 daxi20:Release37-RC3 daxi20:Release37-RC2 daxi20:Release37-RC1 daxi20:all-best-ip daxi20:Release36.1 daxi20:Release36 daxi20:Release35 daxi20:Release34 daxi20:Release33 daxi20:Release32 daxi20:Release32-RC4 daxi20:Release32-RC3 daxi20:Release32-RC2 daxi20:Release32-RC1 daxi20:Release31 daxi20:Release30 daxi20:Release29 daxi20:Release28 daxi20:Release27 daxi20:Release26-Special daxi20:Release25 daxi20:Release24 daxi20:Release23 daxi20:Release22 daxi20:Release21 daxi20:Release20 daxi20:Release18

5 Commits
Release37- ... Release37-

Author SHA1 Message Date
Nick Peng
d223194eff dns_server: fix crash issue 2022-07-14 22:55:50 +08:00
Nick Peng
a83818c094 code: cleanup lint and extra compile warnings 2022-07-10 10:32:01 +08:00
Nick Peng
4e2161c6fc conf: optimize badconfig log 2022-07-07 22:49:30 +08:00
Nick Peng
7d62226995 server: some minor fixes 2022-07-05 23:32:22 +08:00
Nick Peng
092b4ede88 dns_server: fix ip number is only one when speed check is none 2022-07-05 00:18:28 +08:00
24 changed files with 856 additions and 647 deletions
Expand all files Collapse all files

9
.github/ISSUE_TEMPLATE/issue.md vendored
View File

@@ -15,6 +15,11 @@ assignees: ''
2. 运营商 2. 运营商
3. smartdns来源以及版本
4. 涉及的配置(注意去除个人相关信息)
**重现步骤** **重现步骤**
1. 上游DNS配置。 1. 上游DNS配置。
@@ -22,8 +27,8 @@ assignees: ''
**信息收集** **信息收集**
1. 将/var/log/smrtdns.log日志作为附件上传。 1. 将/var/log/smrtdns.log日志作为附件上传(注意去除个人相关信息)。
2. 如进程异常，请将coredump功能开启，上传coredump信息文件。 2. 如进程异常，请将coredump功能开启，上传coredump信息文件，同时上传配套的smartdns进程文件。
在自定义界面，开启设置->自定义设置->生成coredump配置，重现问题后提交coredump文件 在自定义界面，开启设置->自定义设置->生成coredump配置，重现问题后提交coredump文件
coredump文件在/tmp目录下 coredump文件在/tmp目录下

2
src/Makefile
View File

@@ -20,7 +20,7 @@ OBJS=smartdns.o fast_ping.o dns_client.o dns_server.o dns.o util.o tlog.o dns_co
# cflags # cflags
ifndef CFLAGS ifndef CFLAGS
CFLAGS =-O2 -g -Wall -Wstrict-prototypes -fno-omit-frame-pointer -Wstrict-aliasing -funwind-tables CFLAGS =-O2 -g -Wall -Wstrict-prototypes -fno-omit-frame-pointer -Wstrict-aliasing -funwind-tables -Wmissing-prototypes -Wshadow -Wextra -Wno-unused-parameter -Wno-implicit-fallthrough
endif endif
override CFLAGS +=-Iinclude override CFLAGS +=-Iinclude
override CFLAGS += -DBASE_FILE_NAME=\"$(notdir $<)\" override CFLAGS += -DBASE_FILE_NAME=\"$(notdir $<)\"

179
src/dns.c
View File

@@ -45,7 +45,7 @@
/* read short and move pointer */ /* read short and move pointer */
static short _dns_read_short(unsigned char **buffer) static short _dns_read_short(unsigned char **buffer)
{ {
unsigned short value; unsigned short value = 0;
value = ntohs(*((unsigned short *)(*buffer))); value = ntohs(*((unsigned short *)(*buffer)));
*buffer += 2; *buffer += 2;
@@ -86,7 +86,7 @@ static void _dns_write_int(unsigned char **buffer, unsigned int value)
/* read int and move pointer */ /* read int and move pointer */
static unsigned int _dns_read_int(unsigned char **buffer) static unsigned int _dns_read_int(unsigned char **buffer)
{ {
unsigned int value; unsigned int value = 0;
value = ntohl(*((unsigned int *)(*buffer))); value = ntohl(*((unsigned int *)(*buffer)));
*buffer += 4; *buffer += 4;
@@ -99,12 +99,13 @@ static inline int _dns_left_len(struct dns_context *context)
return context->maxsize - (context->ptr - context->data); return context->maxsize - (context->ptr - context->data);
} }
static int _dns_get_domain_from_packet(unsigned char *packet, int packet_size, unsigned char **domain_ptr, char *output, int size) static int _dns_get_domain_from_packet(unsigned char *packet, int packet_size, unsigned char **domain_ptr, char *output,
int size)
{ {
int output_len = 0; int output_len = 0;
int copy_len = 0; int copy_len = 0;
int len = 0; int len = 0;
unsigned char *ptr = (unsigned char*)*domain_ptr; unsigned char *ptr = *domain_ptr;
int is_compressed = 0; int is_compressed = 0;
int ptr_jump = 0; int ptr_jump = 0;
@@ -140,8 +141,8 @@ static int _dns_get_domain_from_packet(unsigned char *packet, int packet_size, u
ptr = packet + len; ptr = packet + len;
if (ptr > packet + packet_size) { if (ptr > packet + packet_size) {
tlog(TLOG_DEBUG, "length is not enough %u:%ld, %p, %p", packet_size, (long)(ptr - packet), tlog(TLOG_DEBUG, "length is not enough %u:%ld, %p, %p", packet_size, (long)(ptr - packet), *domain_ptr,
*domain_ptr, packet); packet);
return -1; return -1;
} }
is_compressed = 1; is_compressed = 1;
@@ -159,8 +160,8 @@ static int _dns_get_domain_from_packet(unsigned char *packet, int packet_size, u
} }
if (ptr > packet + packet_size) { if (ptr > packet + packet_size) {
tlog(TLOG_DEBUG, "length is not enough %u:%ld, %p, %p", packet_size, (long)(ptr - packet), tlog(TLOG_DEBUG, "length is not enough %u:%ld, %p, %p", packet_size, (long)(ptr - packet), *domain_ptr,
*domain_ptr, packet); packet);
return -1; return -1;
} }
@@ -169,8 +170,8 @@ static int _dns_get_domain_from_packet(unsigned char *packet, int packet_size, u
/* copy sub string */ /* copy sub string */
copy_len = (len < size - output_len) ? len : size - 1 - output_len; copy_len = (len < size - output_len) ? len : size - 1 - output_len;
if ((ptr + copy_len) > (packet + packet_size)) { if ((ptr + copy_len) > (packet + packet_size)) {
tlog(TLOG_DEBUG, "length is not enough %u:%ld, %p, %p", packet_size, (long)(ptr - packet), tlog(TLOG_DEBUG, "length is not enough %u:%ld, %p, %p", packet_size, (long)(ptr - packet), *domain_ptr,
*domain_ptr, packet); packet);
return -1; return -1;
} }
memcpy(output, ptr, copy_len); memcpy(output, ptr, copy_len);
@@ -193,15 +194,17 @@ static int _dns_decode_domain(struct dns_context *context, char *output, int siz
return _dns_get_domain_from_packet(context->data, context->maxsize, &(context->ptr), output, size); return _dns_get_domain_from_packet(context->data, context->maxsize, &(context->ptr), output, size);
} }
unsigned int dict_hash(const char *s) static unsigned int dict_hash(const char *s)
{ {
unsigned int hashval; unsigned int hashval = 0;
for (hashval = 0; *s != '\0'; s++) for (hashval = 0; *s != '\0'; s++) {
hashval = *s + 31 * hashval; hashval = *s + 31 * hashval;
}
return hashval; return hashval;
} }
int _dns_add_domain_dict(struct dns_context *context, unsigned int hash, int pos) { static int _dns_add_domain_dict(struct dns_context *context, unsigned int hash, int pos)
{
struct dns_packet_dict *dict = context->namedict; struct dns_packet_dict *dict = context->namedict;
if (dict->dict_count >= DNS_PACKET_DICT_SIZE) { if (dict->dict_count >= DNS_PACKET_DICT_SIZE) {
@@ -224,7 +227,8 @@ int _dns_add_domain_dict(struct dns_context *context, unsigned int hash, int pos
return 0; return 0;
} }
int _dns_get_domain_offset(struct dns_context *context, const char *domain) { static int _dns_get_domain_offset(struct dns_context *context, const char *domain)
{
int i = 0; int i = 0;
char domain_check[DNS_MAX_CNAME_LEN]; char domain_check[DNS_MAX_CNAME_LEN];
@@ -241,7 +245,8 @@ int _dns_get_domain_offset(struct dns_context *context, const char *domain) {
} }
unsigned char *domain_check_ptr = dict->names[i].pos + context->data; unsigned char *domain_check_ptr = dict->names[i].pos + context->data;
if (_dns_get_domain_from_packet(context->data, context->maxsize, &domain_check_ptr, domain_check, DNS_MAX_CNAME_LEN) !=0) { if (_dns_get_domain_from_packet(context->data, context->maxsize, &domain_check_ptr, domain_check,
DNS_MAX_CNAME_LEN) != 0) {
return -1; return -1;
} }
@@ -252,7 +257,7 @@ int _dns_get_domain_offset(struct dns_context *context, const char *domain) {
return -1; return -1;
} }
static int _dns_encode_domain(struct dns_context *context, char *domain) static int _dns_encode_domain(struct dns_context *context, const char *domain)
{ {
int num = 0; int num = 0;
int total_len = 0; int total_len = 0;
@@ -269,7 +274,6 @@ static int _dns_encode_domain(struct dns_context *context, char *domain)
int offset = 0xc000 | dict_offset; int offset = 0xc000 | dict_offset;
_dns_write_short(&ptr_num, offset); _dns_write_short(&ptr_num, offset);
context->ptr++; context->ptr++;
dict_offset = -1;
ptr_num = NULL; ptr_num = NULL;
return total_len; return total_len;
} }
@@ -308,7 +312,7 @@ static int _dns_encode_domain(struct dns_context *context, char *domain)
/* iterator get rrs begin */ /* iterator get rrs begin */
struct dns_rrs *dns_get_rrs_start(struct dns_packet *packet, dns_rr_type type, int *count) struct dns_rrs *dns_get_rrs_start(struct dns_packet *packet, dns_rr_type type, int *count)
{ {
unsigned short start; unsigned short start = 0;
struct dns_head *head = &packet->head; struct dns_head *head = &packet->head;
/* get rrs count by rrs type */ /* get rrs count by rrs type */
@@ -357,8 +361,9 @@ struct dns_rrs *dns_get_rrs_next(struct dns_packet *packet, struct dns_rrs *rrs)
return (struct dns_rrs *)(packet->data + rrs->next); return (struct dns_rrs *)(packet->data + rrs->next);
} }
static void _dns_init_context_by_rrs(struct dns_rrs *rrs, struct dns_context *context) { static void _dns_init_context_by_rrs(struct dns_rrs *rrs, struct dns_context *context)
context->packet =rrs->packet; {
context->packet = rrs->packet;
context->data = rrs->packet->data; context->data = rrs->packet->data;
context->ptr = rrs->data; context->ptr = rrs->data;
context->namedict = &rrs->packet->namedict; context->namedict = &rrs->packet->namedict;
@@ -368,10 +373,10 @@ static void _dns_init_context_by_rrs(struct dns_rrs *rrs, struct dns_context *co
/* iterator add rrs begin */ /* iterator add rrs begin */
static int _dns_add_rrs_start(struct dns_packet *packet, struct dns_context *context) static int _dns_add_rrs_start(struct dns_packet *packet, struct dns_context *context)
{ {
struct dns_rrs *rrs; struct dns_rrs *rrs = NULL;
unsigned char *end = packet->data + packet->len; unsigned char *end = packet->data + packet->len;
if ((packet->len + sizeof(*rrs)) >= packet->size) { if ((packet->len + (int)sizeof(*rrs)) >= packet->size) {
return -1; return -1;
} }
rrs = (struct dns_rrs *)end; rrs = (struct dns_rrs *)end;
@@ -388,15 +393,15 @@ static int _dns_add_rrs_start(struct dns_packet *packet, struct dns_context *con
/* iterator add rrs end */ /* iterator add rrs end */
static int _dns_rr_add_end(struct dns_packet *packet, int type, dns_type_t rtype, int len) static int _dns_rr_add_end(struct dns_packet *packet, int type, dns_type_t rtype, int len)
{ {
struct dns_rrs *rrs; struct dns_rrs *rrs = NULL;
struct dns_rrs *rrs_next; struct dns_rrs *rrs_next = NULL;
struct dns_head *head = &packet->head; struct dns_head *head = &packet->head;
unsigned char *end = packet->data + packet->len; unsigned char *end = packet->data + packet->len;
unsigned short *count; unsigned short *count = NULL;
unsigned short *start; unsigned short *start = NULL;
rrs = (struct dns_rrs *)end; rrs = (struct dns_rrs *)end;
if (packet->len + len > packet->size - sizeof(*packet) - sizeof(*rrs)) { if (packet->len + len > packet->size - (int)sizeof(*packet) - (int)sizeof(*rrs)) {
return -1; return -1;
} }
@@ -449,7 +454,7 @@ static int _dns_rr_add_end(struct dns_packet *packet, int type, dns_type_t rtype
return 0; return 0;
} }
static int _dns_add_qr_head(struct dns_context *context, char *domain, int qtype, int qclass) static int _dns_add_qr_head(struct dns_context *context, const char *domain, int qtype, int qclass)
{ {
int ret = _dns_encode_domain(context, domain); int ret = _dns_encode_domain(context, domain);
if (ret < 0) { if (ret < 0) {
@@ -489,8 +494,7 @@ static int _dns_get_qr_head(struct dns_context *context, char *domain, int maxsi
return 0; return 0;
} }
static int _dns_add_rr_head(struct dns_context *context, char *domain, int qtype, int qclass, int ttl, static int _dns_add_rr_head(struct dns_context *context, const char *domain, int qtype, int qclass, int ttl, int rr_len)
int rr_len)
{ {
int len = 0; int len = 0;
@@ -515,8 +519,8 @@ static int _dns_add_rr_head(struct dns_context *context, char *domain, int qtype
return len + 6; return len + 6;
} }
static int _dns_get_rr_head(struct dns_context *context, char *domain, int maxsize, int *qtype, int *qclass, static int _dns_get_rr_head(struct dns_context *context, char *domain, int maxsize, int *qtype, int *qclass, int *ttl,
int *ttl, int *rr_len) int *rr_len)
{ {
int len = 0; int len = 0;
@@ -538,12 +542,12 @@ static int _dns_get_rr_head(struct dns_context *context, char *domain, int maxsi
return len; return len;
} }
static int _dns_add_RAW(struct dns_packet *packet, dns_rr_type rrtype, dns_type_t rtype, char *domain, int ttl, static int _dns_add_RAW(struct dns_packet *packet, dns_rr_type rrtype, dns_type_t rtype, const char *domain, int ttl,
void *raw, int raw_len) const void *raw, int raw_len)
{ {
int len = 0; int len = 0;
struct dns_context context; struct dns_context context;
int ret; int ret = 0;
/* resource record */ /* resource record */
/* |domain | /* |domain |
@@ -621,7 +625,7 @@ static int _dns_add_opt_RAW(struct dns_packet *packet, dns_opt_code_t opt_rrtype
len += raw_len; len += raw_len;
len += sizeof(*opt); len += sizeof(*opt);
return _dns_add_RAW(packet, DNS_RRS_OPT, DNS_OPT_T_TCP_KEEPALIVE, "", 0, opt_data, len); return _dns_add_RAW(packet, DNS_RRS_OPT, (dns_type_t)DNS_OPT_T_TCP_KEEPALIVE, "", 0, opt_data, len);
} }
static int _dns_get_opt_RAW(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, struct dns_opt *dns_opt, static int _dns_get_opt_RAW(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, struct dns_opt *dns_opt,
@@ -715,7 +719,7 @@ static int __attribute__((unused)) _dns_get_OPT(struct dns_rrs *rrs, unsigned sh
return 0; return 0;
} }
int dns_add_CNAME(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname) int dns_add_CNAME(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, const char *cname)
{ {
int rr_len = strnlen(cname, DNS_MAX_CNAME_LEN) + 1; int rr_len = strnlen(cname, DNS_MAX_CNAME_LEN) + 1;
return _dns_add_RAW(packet, type, DNS_T_CNAME, domain, ttl, cname, rr_len); return _dns_add_RAW(packet, type, DNS_T_CNAME, domain, ttl, cname, rr_len);
@@ -727,7 +731,7 @@ int dns_get_CNAME(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char
return _dns_get_RAW(rrs, domain, maxsize, ttl, cname, &len); return _dns_get_RAW(rrs, domain, maxsize, ttl, cname, &len);
} }
int dns_add_A(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[DNS_RR_A_LEN]) int dns_add_A(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, unsigned char addr[DNS_RR_A_LEN])
{ {
return _dns_add_RAW(packet, type, DNS_T_A, domain, ttl, addr, DNS_RR_A_LEN); return _dns_add_RAW(packet, type, DNS_T_A, domain, ttl, addr, DNS_RR_A_LEN);
} }
@@ -738,7 +742,7 @@ int dns_get_A(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned
return _dns_get_RAW(rrs, domain, maxsize, ttl, addr, &len); return _dns_get_RAW(rrs, domain, maxsize, ttl, addr, &len);
} }
int dns_add_PTR(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname) int dns_add_PTR(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, char *cname)
{ {
int rr_len = strnlen(cname, DNS_MAX_CNAME_LEN) + 1; int rr_len = strnlen(cname, DNS_MAX_CNAME_LEN) + 1;
return _dns_add_RAW(packet, type, DNS_T_PTR, domain, ttl, cname, rr_len); return _dns_add_RAW(packet, type, DNS_T_PTR, domain, ttl, cname, rr_len);
@@ -750,7 +754,7 @@ int dns_get_PTR(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *
return _dns_get_RAW(rrs, domain, maxsize, ttl, cname, &len); return _dns_get_RAW(rrs, domain, maxsize, ttl, cname, &len);
} }
int dns_add_NS(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname) int dns_add_NS(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, const char *cname)
{ {
int rr_len = strnlen(cname, DNS_MAX_CNAME_LEN) + 1; int rr_len = strnlen(cname, DNS_MAX_CNAME_LEN) + 1;
return _dns_add_RAW(packet, type, DNS_T_NS, domain, ttl, cname, rr_len); return _dns_add_RAW(packet, type, DNS_T_NS, domain, ttl, cname, rr_len);
@@ -762,7 +766,7 @@ int dns_get_NS(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *c
return _dns_get_RAW(rrs, domain, maxsize, ttl, cname, &len); return _dns_get_RAW(rrs, domain, maxsize, ttl, cname, &len);
} }
int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl,
unsigned char addr[DNS_RR_AAAA_LEN]) unsigned char addr[DNS_RR_AAAA_LEN])
{ {
return _dns_add_RAW(packet, type, DNS_T_AAAA, domain, ttl, addr, DNS_RR_AAAA_LEN); return _dns_add_RAW(packet, type, DNS_T_AAAA, domain, ttl, addr, DNS_RR_AAAA_LEN);
@@ -774,7 +778,7 @@ int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsig
return _dns_get_RAW(rrs, domain, maxsize, ttl, addr, &len); return _dns_get_RAW(rrs, domain, maxsize, ttl, addr, &len);
} }
int dns_add_SOA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, struct dns_soa *soa) int dns_add_SOA(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, struct dns_soa *soa)
{ {
/* SOA */ /* SOA */
/*| mname | /*| mname |
@@ -845,7 +849,6 @@ int dns_get_SOA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, struct
memcpy(&soa->expire, ptr, 4); memcpy(&soa->expire, ptr, 4);
ptr += 4; ptr += 4;
memcpy(&soa->minimum, ptr, 4); memcpy(&soa->minimum, ptr, 4);
ptr += 4;
return 0; return 0;
} }
@@ -881,7 +884,7 @@ int dns_add_OPT_ECS(struct dns_packet *packet, struct dns_opt_ecs *ecs)
memcpy(opt->data, ecs, len); memcpy(opt->data, ecs, len);
len += sizeof(*opt); len += sizeof(*opt);
return _dns_add_RAW(packet, DNS_RRS_OPT, DNS_OPT_T_ECS, "", 0, opt_data, len); return _dns_add_RAW(packet, DNS_RRS_OPT, (dns_type_t)DNS_OPT_T_ECS, "", 0, opt_data, len);
} }
int dns_get_OPT_ECS(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len, struct dns_opt_ecs *ecs) int dns_get_OPT_ECS(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len, struct dns_opt_ecs *ecs)
@@ -896,7 +899,7 @@ int dns_get_OPT_ECS(struct dns_rrs *rrs, unsigned short *opt_code, unsigned shor
return -1; return -1;
} }
if (len < sizeof(*opt)) { if (len < (int)sizeof(*opt)) {
return -1; return -1;
} }
@@ -934,7 +937,7 @@ int dns_get_OPT_TCP_KEEYALIVE(struct dns_rrs *rrs, unsigned short *opt_code, uns
return -1; return -1;
} }
if (len < sizeof(*opt)) { if (len < (int)sizeof(*opt)) {
return -1; return -1;
} }
@@ -962,7 +965,7 @@ int dns_get_OPT_TCP_KEEYALIVE(struct dns_rrs *rrs, unsigned short *opt_code, uns
* Format: * Format:
* |DNS_NAME\0(string)|qtype(short)|qclass(short)| * |DNS_NAME\0(string)|qtype(short)|qclass(short)|
*/ */
int dns_add_domain(struct dns_packet *packet, char *domain, int qtype, int qclass) int dns_add_domain(struct dns_packet *packet, const char *domain, int qtype, int qclass)
{ {
int len = 0; int len = 0;
int ret = 0; int ret = 0;
@@ -995,7 +998,7 @@ int dns_get_domain(struct dns_rrs *rrs, char *domain, int maxsize, int *qtype, i
static int _dns_decode_head(struct dns_context *context) static int _dns_decode_head(struct dns_context *context)
{ {
unsigned int fields; unsigned int fields = 0;
int len = 12; int len = 12;
struct dns_head *head = &context->packet->head; struct dns_head *head = &context->packet->head;
@@ -1152,7 +1155,8 @@ static int _dns_decode_rr_head(struct dns_context *context, char *domain, int do
return 0; return 0;
} }
static int _dns_encode_rr_head(struct dns_context *context, char *domain, int qtype, int qclass, int ttl, int rr_len, unsigned char **rr_len_ptr) static int _dns_encode_rr_head(struct dns_context *context, char *domain, int qtype, int qclass, int ttl, int rr_len,
unsigned char **rr_len_ptr)
{ {
int ret = 0; int ret = 0;
ret = _dns_encode_qr_head(context, domain, qtype, qclass); ret = _dns_encode_qr_head(context, domain, qtype, qclass);
@@ -1175,12 +1179,12 @@ static int _dns_encode_rr_head(struct dns_context *context, char *domain, int qt
static int _dns_encode_raw(struct dns_context *context, struct dns_rrs *rrs) static int _dns_encode_raw(struct dns_context *context, struct dns_rrs *rrs)
{ {
int ret; int ret = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
int ttl = 0; int ttl = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
int rr_len; int rr_len = 0;
unsigned char *rr_len_ptr = NULL; unsigned char *rr_len_ptr = NULL;
struct dns_context data_context; struct dns_context data_context;
/* /*
@@ -1250,12 +1254,12 @@ static int _dns_decode_CNAME(struct dns_context *context, char *cname, int cname
static int _dns_encode_CNAME(struct dns_context *context, struct dns_rrs *rrs) static int _dns_encode_CNAME(struct dns_context *context, struct dns_rrs *rrs)
{ {
int ret; int ret = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
int ttl = 0; int ttl = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
int rr_len; int rr_len = 0;
unsigned char *rr_len_ptr = NULL; unsigned char *rr_len_ptr = NULL;
struct dns_context data_context; struct dns_context data_context;
@@ -1315,7 +1319,7 @@ static int _dns_decode_SOA(struct dns_context *context, struct dns_soa *soa)
static int _dns_encode_SOA(struct dns_context *context, struct dns_rrs *rrs) static int _dns_encode_SOA(struct dns_context *context, struct dns_rrs *rrs)
{ {
int ret; int ret = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
int ttl = 0; int ttl = 0;
@@ -1391,7 +1395,7 @@ static int _dns_decode_opt_ecs(struct dns_context *context, struct dns_opt_ecs *
len = (ecs->source_prefix / 8); len = (ecs->source_prefix / 8);
len += (ecs->source_prefix % 8 > 0) ? 1 : 0; len += (ecs->source_prefix % 8 > 0) ? 1 : 0;
if (_dns_left_len(context) < len || len > sizeof(ecs->addr)) { if (_dns_left_len(context) < len || len > (int)sizeof(ecs->addr)) {
return -1; return -1;
} }
@@ -1405,7 +1409,6 @@ static int _dns_decode_opt_ecs(struct dns_context *context, struct dns_opt_ecs *
return 0; return 0;
} }
static int _dns_decode_opt_cookie(struct dns_context *context, struct dns_opt_cookie *cookie) static int _dns_decode_opt_cookie(struct dns_context *context, struct dns_opt_cookie *cookie)
{ {
// TODO // TODO
@@ -1436,16 +1439,15 @@ static int _dns_decode_opt_cookie(struct dns_context *context, struct dns_opt_co
return 0; return 0;
} }
static int _dns_encode_OPT(struct dns_context *context, struct dns_rrs *rrs) static int _dns_encode_OPT(struct dns_context *context, struct dns_rrs *rrs)
{ {
int ret; int ret = 0;
int opt_code = 0; int opt_code = 0;
int qclass = 0; int qclass = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
struct dns_context data_context; struct dns_context data_context;
int rr_len = 0; int rr_len = 0;
int ttl; int ttl = 0;
struct dns_opt *dns_opt = NULL; struct dns_opt *dns_opt = NULL;
_dns_init_context_by_rrs(rrs, &data_context); _dns_init_context_by_rrs(rrs, &data_context);
@@ -1454,7 +1456,7 @@ static int _dns_encode_OPT(struct dns_context *context, struct dns_rrs *rrs)
return -1; return -1;
} }
if (rr_len < sizeof(*dns_opt)) { if (rr_len < (int)sizeof(*dns_opt)) {
return -1; return -1;
} }
@@ -1493,8 +1495,8 @@ static int _dns_get_opts_data_len(struct dns_packet *packet, struct dns_rrs *rrs
int len = 0; int len = 0;
int opt_code = 0; int opt_code = 0;
int qclass = 0; int qclass = 0;
int ttl; int ttl = 0;
int ret; int ret = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
struct dns_context data_context; struct dns_context data_context;
int rr_len = 0; int rr_len = 0;
@@ -1550,10 +1552,10 @@ static int _dns_encode_opts(struct dns_packet *packet, struct dns_context *conte
return 0; return 0;
} }
static int __attribute__((unused)) _dns_decode_opt(struct dns_context *context, dns_rr_type type, unsigned int ttl, int rr_len) static int _dns_decode_opt(struct dns_context *context, dns_rr_type type, unsigned int ttl, int rr_len)
{ {
unsigned short opt_code; unsigned short opt_code = 0;
unsigned short opt_len; unsigned short opt_len = 0;
unsigned short ercode = (ttl >> 16) & 0xFFFF; unsigned short ercode = (ttl >> 16) & 0xFFFF;
unsigned short ever = (ttl)&0xFFFF; unsigned short ever = (ttl)&0xFFFF;
unsigned char *start = context->ptr; unsigned char *start = context->ptr;
@@ -1599,6 +1601,8 @@ static int __attribute__((unused)) _dns_decode_opt(struct dns_context *context,
while (context->ptr - start < rr_len) { while (context->ptr - start < rr_len) {
if (_dns_left_len(context) < 4) { if (_dns_left_len(context) < 4) {
tlog(TLOG_WARN, "data length is invalid, %d:%d", _dns_left_len(context),
(int)(context->ptr - context->data));
return -1; return -1;
} }
opt_code = _dns_read_short(&context->ptr); opt_code = _dns_read_short(&context->ptr);
@@ -1646,7 +1650,7 @@ static int __attribute__((unused)) _dns_decode_opt(struct dns_context *context,
static int _dns_decode_qd(struct dns_context *context) static int _dns_decode_qd(struct dns_context *context)
{ {
struct dns_packet *packet = context->packet; struct dns_packet *packet = context->packet;
int len; int len = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
@@ -1666,14 +1670,14 @@ static int _dns_decode_qd(struct dns_context *context)
static int _dns_decode_an(struct dns_context *context, dns_rr_type type) static int _dns_decode_an(struct dns_context *context, dns_rr_type type)
{ {
int ret; int ret = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
int ttl; int ttl = 0;
int rr_len = 0; int rr_len = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
struct dns_packet *packet = context->packet; struct dns_packet *packet = context->packet;
unsigned char *start; unsigned char *start = NULL;
/* decode rr head */ /* decode rr head */
ret = _dns_decode_rr_head(context, domain, DNS_MAX_CNAME_LEN, &qtype, &qclass, &ttl, &rr_len); ret = _dns_decode_rr_head(context, domain, DNS_MAX_CNAME_LEN, &qtype, &qclass, &ttl, &rr_len);
@@ -1717,13 +1721,13 @@ static int _dns_decode_an(struct dns_context *context, dns_rr_type type)
struct dns_soa soa; struct dns_soa soa;
ret = _dns_decode_SOA(context, &soa); ret = _dns_decode_SOA(context, &soa);
if (ret < 0) { if (ret < 0) {
tlog(TLOG_ERROR, "decode CNAME failed, %s", domain); tlog(TLOG_ERROR, "decode SOA failed, %s", domain);
return -1; return -1;
} }
ret = dns_add_SOA(packet, type, domain, ttl, &soa); ret = dns_add_SOA(packet, type, domain, ttl, &soa);
if (ret < 0) { if (ret < 0) {
tlog(TLOG_ERROR, "add CNAME failed, %s", domain); tlog(TLOG_ERROR, "add SOA failed, %s", domain);
return -1; return -1;
} }
} break; } break;
@@ -1786,7 +1790,7 @@ static int _dns_decode_an(struct dns_context *context, dns_rr_type type)
} break; } break;
default: { default: {
unsigned char raw_data[1024]; unsigned char raw_data[1024];
if (_dns_left_len(context) < rr_len || rr_len >= sizeof(raw_data)) { if (_dns_left_len(context) < rr_len || rr_len >= (int)sizeof(raw_data)) {
tlog(TLOG_DEBUG, "length mismatch\n"); tlog(TLOG_DEBUG, "length mismatch\n");
return -1; return -1;
} }
@@ -1818,7 +1822,7 @@ static int _dns_decode_an(struct dns_context *context, dns_rr_type type)
static int _dns_encode_qd(struct dns_context *context, struct dns_rrs *rrs) static int _dns_encode_qd(struct dns_context *context, struct dns_rrs *rrs)
{ {
int ret; int ret = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
@@ -1840,7 +1844,7 @@ static int _dns_encode_qd(struct dns_context *context, struct dns_rrs *rrs)
static int _dns_encode_an(struct dns_context *context, struct dns_rrs *rrs) static int _dns_encode_an(struct dns_context *context, struct dns_rrs *rrs)
{ {
int ret; int ret = 0;
switch (rrs->type) { switch (rrs->type) {
case DNS_T_A: case DNS_T_A:
case DNS_T_AAAA: { case DNS_T_AAAA: {
@@ -1930,8 +1934,8 @@ static int _dns_encode_body(struct dns_context *context)
struct dns_head *head = &packet->head; struct dns_head *head = &packet->head;
int i = 0; int i = 0;
int len = 0; int len = 0;
struct dns_rrs *rrs; struct dns_rrs *rrs = NULL;
int count; int count = 0;
rrs = dns_get_rrs_start(packet, DNS_RRS_QD, &count); rrs = dns_get_rrs_start(packet, DNS_RRS_QD, &count);
head->qdcount = count; head->qdcount = count;
@@ -1984,7 +1988,7 @@ static int _dns_encode_body(struct dns_context *context)
int dns_packet_init(struct dns_packet *packet, int size, struct dns_head *head) int dns_packet_init(struct dns_packet *packet, int size, struct dns_head *head)
{ {
struct dns_head *init_head = &packet->head; struct dns_head *init_head = &packet->head;
if (size < sizeof(*packet)) { if (size < (int)sizeof(*packet)) {
return -1; return -1;
} }
@@ -2079,13 +2083,13 @@ int dns_encode(unsigned char *data, int size, struct dns_packet *packet)
static int _dns_update_an(struct dns_context *context, dns_rr_type type, struct dns_update_param *param) static int _dns_update_an(struct dns_context *context, dns_rr_type type, struct dns_update_param *param)
{ {
int ret; int ret = 0;
int qtype = 0; int qtype = 0;
int qclass = 0; int qclass = 0;
int ttl; int ttl = 0;
int rr_len = 0; int rr_len = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
unsigned char *start; unsigned char *start = NULL;
/* decode rr head */ /* decode rr head */
ret = _dns_decode_rr_head(context, domain, DNS_MAX_CNAME_LEN, &qtype, &qclass, &ttl, &rr_len); ret = _dns_decode_rr_head(context, domain, DNS_MAX_CNAME_LEN, &qtype, &qclass, &ttl, &rr_len);
@@ -2115,7 +2119,6 @@ static int _dns_update_an(struct dns_context *context, dns_rr_type type, struct
return 0; return 0;
} }
static int _dns_update_body(struct dns_context *context, struct dns_update_param *param) static int _dns_update_body(struct dns_context *context, struct dns_update_param *param)
{ {
struct dns_packet *packet = context->packet; struct dns_packet *packet = context->packet;
@@ -2128,9 +2131,9 @@ static int _dns_update_body(struct dns_context *context, struct dns_update_param
head->qdcount = 0; head->qdcount = 0;
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
int qtype; int qtype = 0;
int qclass; int qclass = 0;
int len; int len = 0;
len = _dns_decode_qr_head(context, domain, DNS_MAX_CNAME_LEN, &qtype, &qclass); len = _dns_decode_qr_head(context, domain, DNS_MAX_CNAME_LEN, &qtype, &qclass);
if (len < 0) { if (len < 0) {
tlog(TLOG_DEBUG, "update qd failed."); tlog(TLOG_DEBUG, "update qd failed.");
@@ -2171,8 +2174,8 @@ static int _dns_update_body(struct dns_context *context, struct dns_update_param
return 0; return 0;
} }
int _dns_update_id(unsigned char *data, int size, struct dns_update_param *param) { static int _dns_update_id(unsigned char *data, int size, struct dns_update_param *param)
{
unsigned char *ptr = data; unsigned char *ptr = data;
_dns_write_short(&ptr, param->id); _dns_write_short(&ptr, param->id);
return 0; return 0;
@@ -2222,7 +2225,7 @@ int dns_packet_update(unsigned char *data, int size, struct dns_update_param *pa
void dns_debug(void) void dns_debug(void)
{ {
unsigned char data[1024]; unsigned char data[1024];
int len; ssize_t len;
char buff[4096]; char buff[4096];
int fd = open("dns.bin", O_RDWR); int fd = open("dns.bin", O_RDWR);

24
src/dns.h
View File

@@ -23,8 +23,8 @@
#define DNS_RR_AAAA_LEN 16 #define DNS_RR_AAAA_LEN 16
#define DNS_MAX_CNAME_LEN 256 #define DNS_MAX_CNAME_LEN 256
#define DNS_MAX_OPT_LEN 256 #define DNS_MAX_OPT_LEN 256
#define DNS_IN_PACKSIZE (512 * 4) #define DNS_IN_PACKSIZE (512 * 8)
#define DNS_PACKSIZE (512 * 10) #define DNS_PACKSIZE (512 * 12)
#define DNS_DEFAULT_PACKET_SIZE 512 #define DNS_DEFAULT_PACKET_SIZE 512
#define DNS_ADDR_FAMILY_IP 1 #define DNS_ADDR_FAMILY_IP 1
@@ -121,7 +121,7 @@ struct dns_head {
#define DNS_PACKET_DICT_SIZE 16 #define DNS_PACKET_DICT_SIZE 16
struct dns_packet_dict_item { struct dns_packet_dict_item {
unsigned pos; unsigned short pos;
unsigned int hash; unsigned int hash;
}; };
@@ -150,7 +150,7 @@ struct dns_rrs {
struct dns_packet *packet; struct dns_packet *packet;
unsigned short next; unsigned short next;
unsigned short len; unsigned short len;
dns_type_t type; int type;
unsigned char data[0]; unsigned char data[0];
}; };
@@ -159,7 +159,7 @@ struct dns_context {
struct dns_packet *packet; struct dns_packet *packet;
struct dns_packet_dict *namedict; struct dns_packet_dict *namedict;
unsigned char *data; unsigned char *data;
unsigned int maxsize; int maxsize;
unsigned char *ptr; unsigned char *ptr;
}; };
@@ -205,29 +205,29 @@ struct dns_rrs *dns_get_rrs_start(struct dns_packet *packet, dns_rr_type type, i
/* /*
* Question * Question
*/ */
int dns_add_domain(struct dns_packet *packet, char *domain, int qtype, int qclass); int dns_add_domain(struct dns_packet *packet, const char *domain, int qtype, int qclass);
int dns_get_domain(struct dns_rrs *rrs, char *domain, int maxsize, int *qtype, int *qclass); int dns_get_domain(struct dns_rrs *rrs, char *domain, int maxsize, int *qtype, int *qclass);
/* /*
* Answers * Answers
*/ */
int dns_add_CNAME(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname); int dns_add_CNAME(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, const char *cname);
int dns_get_CNAME(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size); int dns_get_CNAME(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size);
int dns_add_A(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[DNS_RR_A_LEN]); int dns_add_A(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, unsigned char addr[DNS_RR_A_LEN]);
int dns_get_A(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_A_LEN]); int dns_get_A(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_A_LEN]);
int dns_add_PTR(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname); int dns_add_PTR(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, char *cname);
int dns_get_PTR(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size); int dns_get_PTR(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size);
int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl,
unsigned char addr[DNS_RR_AAAA_LEN]); unsigned char addr[DNS_RR_AAAA_LEN]);
int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_AAAA_LEN]); int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_AAAA_LEN]);
int dns_add_SOA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, struct dns_soa *soa); int dns_add_SOA(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, struct dns_soa *soa);
int dns_get_SOA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, struct dns_soa *soa); int dns_get_SOA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, struct dns_soa *soa);
int dns_add_NS(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname); int dns_add_NS(struct dns_packet *packet, dns_rr_type type, const char *domain, int ttl, const char *cname);
int dns_get_NS(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size); int dns_get_NS(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size);
int dns_set_OPT_payload_size(struct dns_packet *packet, int payload_size); int dns_set_OPT_payload_size(struct dns_packet *packet, int payload_size);

76
src/dns_cache.c
View File

@@ -243,7 +243,7 @@ struct dns_cache_data *dns_cache_new_data_packet(uint32_t cache_flag, void *pack
return (struct dns_cache_data *)cache_packet; return (struct dns_cache_data *)cache_packet;
} }
int _dns_cache_replace(char *domain, int ttl, dns_type_t qtype, int speed, int inactive, static int _dns_cache_replace(char *domain, int ttl, dns_type_t qtype, int speed, int inactive,
struct dns_cache_data *cache_data) struct dns_cache_data *cache_data)
{ {
struct dns_cache *dns_cache = NULL; struct dns_cache *dns_cache = NULL;
@@ -300,18 +300,38 @@ int dns_cache_replace_inactive(char *domain, int ttl, dns_type_t qtype, int spee
return _dns_cache_replace(domain, ttl, qtype, speed, 1, cache_data); return _dns_cache_replace(domain, ttl, qtype, speed, 1, cache_data);
} }
int _dns_cache_insert(struct dns_cache_info *info, struct dns_cache_data *cache_data, struct list_head *head) static void _dns_cache_remove_by_domain(const char *domain, dns_type_t qtype)
{
uint32_t key = 0;
struct dns_cache *dns_cache = NULL;
key = hash_string(domain);
key = jhash(&qtype, sizeof(qtype), key);
pthread_mutex_lock(&dns_cache_head.lock);
hash_for_each_possible(dns_cache_head.cache_hash, dns_cache, node, key)
{
if (dns_cache->info.qtype != qtype) {
continue;
}
if (strncmp(domain, dns_cache->info.domain, DNS_MAX_CNAME_LEN) != 0) {
continue;
}
_dns_cache_remove(dns_cache);
break;
}
pthread_mutex_unlock(&dns_cache_head.lock);
}
static int _dns_cache_insert(struct dns_cache_info *info, struct dns_cache_data *cache_data, struct list_head *head)
{ {
uint32_t key = 0; uint32_t key = 0;
struct dns_cache *dns_cache = NULL; struct dns_cache *dns_cache = NULL;
/* if cache already exists, free */ /* if cache already exists, free */
dns_cache = dns_cache_lookup(info->domain, info->qtype); _dns_cache_remove_by_domain(info->domain, info->qtype);
if (dns_cache) {
dns_cache_delete(dns_cache);
dns_cache_release(dns_cache);
dns_cache = NULL;
}
dns_cache = malloc(sizeof(*dns_cache)); dns_cache = malloc(sizeof(*dns_cache));
if (dns_cache == NULL) { if (dns_cache == NULL) {
@@ -332,7 +352,7 @@ int _dns_cache_insert(struct dns_cache_info *info, struct dns_cache_data *cache_
/* Release extra cache, remove oldest cache record */ /* Release extra cache, remove oldest cache record */
if (atomic_inc_return(&dns_cache_head.num) > dns_cache_head.size) { if (atomic_inc_return(&dns_cache_head.num) > dns_cache_head.size) {
struct dns_cache *del_cache; struct dns_cache *del_cache = NULL;
del_cache = _dns_inactive_cache_first(); del_cache = _dns_inactive_cache_first();
if (del_cache) { if (del_cache) {
_dns_cache_remove(del_cache); _dns_cache_remove(del_cache);
@@ -383,7 +403,7 @@ struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype)
uint32_t key = 0; uint32_t key = 0;
struct dns_cache *dns_cache = NULL; struct dns_cache *dns_cache = NULL;
struct dns_cache *dns_cache_ret = NULL; struct dns_cache *dns_cache_ret = NULL;
time_t now; time_t now = 0;
if (dns_cache_head.size <= 0) { if (dns_cache_head.size <= 0) {
return NULL; return NULL;
@@ -426,7 +446,7 @@ struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype)
int dns_cache_get_ttl(struct dns_cache *dns_cache) int dns_cache_get_ttl(struct dns_cache *dns_cache)
{ {
time_t now; time_t now = 0;
int ttl = 0; int ttl = 0;
time(&now); time(&now);
@@ -440,7 +460,7 @@ int dns_cache_get_ttl(struct dns_cache *dns_cache)
int dns_cache_get_cname_ttl(struct dns_cache *dns_cache) int dns_cache_get_cname_ttl(struct dns_cache *dns_cache)
{ {
time_t now; time_t now = 0;
int ttl = 0; int ttl = 0;
time(&now); time(&now);
@@ -522,12 +542,12 @@ void dns_cache_update(struct dns_cache *dns_cache)
pthread_mutex_unlock(&dns_cache_head.lock); pthread_mutex_unlock(&dns_cache_head.lock);
} }
void _dns_cache_remove_expired_ttl(dns_cache_callback inactive_precallback, int ttl_inactive_pre, static void _dns_cache_remove_expired_ttl(dns_cache_callback inactive_precallback, int ttl_inactive_pre,
unsigned int max_callback_num, time_t *now) unsigned int max_callback_num, const time_t *now)
{ {
struct dns_cache *dns_cache = NULL; struct dns_cache *dns_cache = NULL;
struct dns_cache *tmp; struct dns_cache *tmp = NULL;
int callback_num = 0; unsigned int callback_num = 0;
int ttl = 0; int ttl = 0;
LIST_HEAD(checklist); LIST_HEAD(checklist);
@@ -579,11 +599,11 @@ void dns_cache_invalidate(dns_cache_callback precallback, int ttl_pre, unsigned
dns_cache_callback inactive_precallback, int ttl_inactive_pre) dns_cache_callback inactive_precallback, int ttl_inactive_pre)
{ {
struct dns_cache *dns_cache = NULL; struct dns_cache *dns_cache = NULL;
struct dns_cache *tmp; struct dns_cache *tmp = NULL;
time_t now; time_t now = 0;
int ttl = 0; int ttl = 0;
LIST_HEAD(checklist); LIST_HEAD(checklist);
int callback_num = 0; unsigned int callback_num = 0;
if (max_callback_num <= 0) { if (max_callback_num <= 0) {
max_callback_num = -1; max_callback_num = -1;
@@ -637,8 +657,8 @@ void dns_cache_invalidate(dns_cache_callback precallback, int ttl_pre, unsigned
static int _dns_cache_read_record(int fd, uint32_t cache_number) static int _dns_cache_read_record(int fd, uint32_t cache_number)
{ {
int i = 0; unsigned int i = 0;
int ret = 0; ssize_t ret = 0;
struct dns_cache_record cache_record; struct dns_cache_record cache_record;
struct dns_cache_data_head data_head; struct dns_cache_data_head data_head;
struct dns_cache_data *cache_data = NULL; struct dns_cache_data *cache_data = NULL;
@@ -706,8 +726,9 @@ errout:
int dns_cache_load(const char *file) int dns_cache_load(const char *file)
{ {
int fd = -1; int fd = -1;
int ret = 0; ssize_t ret = 0;
size_t filesize; off_t filesize = 0;
fd = open(file, O_RDONLY); fd = open(file, O_RDONLY);
if (fd < 0) { if (fd < 0) {
return 0; return 0;
@@ -729,7 +750,7 @@ int dns_cache_load(const char *file)
goto errout; goto errout;
} }
if (strncmp(cache_file.version, __TIMESTAMP__, DNS_CACHE_VERSION_LEN) != 0) { if (strncmp(cache_file.version, __TIMESTAMP__, DNS_CACHE_VERSION_LEN - 1) != 0) {
tlog(TLOG_WARN, "cache version is different, skip load cache."); tlog(TLOG_WARN, "cache version is different, skip load cache.");
goto errout; goto errout;
} }
@@ -761,7 +782,7 @@ static int _dns_cache_write_record(int fd, uint32_t *cache_number, enum CACHE_RE
cache_record.magic = MAGIC_CACHE_DATA; cache_record.magic = MAGIC_CACHE_DATA;
cache_record.type = type; cache_record.type = type;
memcpy(&cache_record.info, &dns_cache->info, sizeof(struct dns_cache_info)); memcpy(&cache_record.info, &dns_cache->info, sizeof(struct dns_cache_info));
int ret = write(fd, &cache_record, sizeof(cache_record)); ssize_t ret = write(fd, &cache_record, sizeof(cache_record));
if (ret != sizeof(cache_record)) { if (ret != sizeof(cache_record)) {
tlog(TLOG_ERROR, "write cache failed, %s", strerror(errno)); tlog(TLOG_ERROR, "write cache failed, %s", strerror(errno));
goto errout; goto errout;
@@ -769,7 +790,7 @@ static int _dns_cache_write_record(int fd, uint32_t *cache_number, enum CACHE_RE
struct dns_cache_data *cache_data = dns_cache->cache_data; struct dns_cache_data *cache_data = dns_cache->cache_data;
ret = write(fd, cache_data, sizeof(*cache_data) + cache_data->head.size); ret = write(fd, cache_data, sizeof(*cache_data) + cache_data->head.size);
if (ret != sizeof(*cache_data) + cache_data->head.size) { if (ret != (int)sizeof(*cache_data) + cache_data->head.size) {
tlog(TLOG_ERROR, "write cache data failed, %s", strerror(errno)); tlog(TLOG_ERROR, "write cache data failed, %s", strerror(errno));
goto errout; goto errout;
} }
@@ -853,7 +874,8 @@ errout:
void dns_cache_destroy(void) void dns_cache_destroy(void)
{ {
struct dns_cache *dns_cache = NULL; struct dns_cache *dns_cache = NULL;
struct dns_cache *tmp; struct dns_cache *tmp = NULL;
pthread_mutex_lock(&dns_cache_head.lock); pthread_mutex_lock(&dns_cache_head.lock);
list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.inactive_list, list) list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.inactive_list, list)
{ {

2
src/dns_cache.h
View File

@@ -51,7 +51,7 @@ struct dns_cache_data_head {
uint32_t cache_flag; uint32_t cache_flag;
enum CACHE_TYPE cache_type; enum CACHE_TYPE cache_type;
int is_soa; int is_soa;
size_t size; ssize_t size;
}; };
struct dns_cache_data { struct dns_cache_data {

324
src/dns_client.c
View File

@@ -72,7 +72,7 @@ struct dns_client_ecs {
/* TCP/TLS buffer */ /* TCP/TLS buffer */
struct dns_server_buff { struct dns_server_buff {
unsigned char data[DNS_TCP_BUFFER]; unsigned char data[DNS_TCP_BUFFER];
unsigned short len; int len;
}; };
typedef enum dns_server_status { typedef enum dns_server_status {
@@ -133,6 +133,7 @@ struct dns_server_pending_group {
struct dns_server_pending { struct dns_server_pending {
struct list_head list; struct list_head list;
struct list_head retry_list;
atomic_t refcnt; atomic_t refcnt;
char host[DNS_HOSTNAME_LEN]; char host[DNS_HOSTNAME_LEN];
@@ -171,7 +172,7 @@ struct dns_server_group {
/* dns client */ /* dns client */
struct dns_client { struct dns_client {
pthread_t tid; pthread_t tid;
int run; atomic_t run;
int epoll_fd; int epoll_fd;
/* dns server list */ /* dns server list */
@@ -251,9 +252,9 @@ static LIST_HEAD(pending_servers);
static pthread_mutex_t pending_server_mutex = PTHREAD_MUTEX_INITIALIZER; static pthread_mutex_t pending_server_mutex = PTHREAD_MUTEX_INITIALIZER;
static int dns_client_has_bootstrap_dns = 0; static int dns_client_has_bootstrap_dns = 0;
int _ssl_read(struct dns_server_info *server, void *buff, int num) static ssize_t _ssl_read(struct dns_server_info *server, void *buff, int num)
{ {
int ret = 0; ssize_t ret = 0;
if (server == NULL || buff == NULL) { if (server == NULL || buff == NULL) {
return SSL_ERROR_SYSCALL; return SSL_ERROR_SYSCALL;
} }
@@ -263,9 +264,9 @@ int _ssl_read(struct dns_server_info *server, void *buff, int num)
return ret; return ret;
} }
int _ssl_write(struct dns_server_info *server, const void *buff, int num) static ssize_t _ssl_write(struct dns_server_info *server, const void *buff, int num)
{ {
int ret = 0; ssize_t ret = 0;
if (server == NULL || buff == NULL || server->ssl == NULL) { if (server == NULL || buff == NULL || server->ssl == NULL) {
return SSL_ERROR_SYSCALL; return SSL_ERROR_SYSCALL;
} }
@@ -276,7 +277,7 @@ int _ssl_write(struct dns_server_info *server, const void *buff, int num)
return ret; return ret;
} }
int _ssl_shutdown(struct dns_server_info *server) static int _ssl_shutdown(struct dns_server_info *server)
{ {
int ret = 0; int ret = 0;
if (server == NULL || server->ssl == NULL) { if (server == NULL || server->ssl == NULL) {
@@ -289,7 +290,7 @@ int _ssl_shutdown(struct dns_server_info *server)
return ret; return ret;
} }
int _ssl_get_error(struct dns_server_info *server, int ret) static int _ssl_get_error(struct dns_server_info *server, int ret)
{ {
int err = 0; int err = 0;
if (server == NULL || server->ssl == NULL) { if (server == NULL || server->ssl == NULL) {
@@ -302,7 +303,7 @@ int _ssl_get_error(struct dns_server_info *server, int ret)
return err; return err;
} }
int _ssl_do_handshake(struct dns_server_info *server) static int _ssl_do_handshake(struct dns_server_info *server)
{ {
int err = 0; int err = 0;
if (server == NULL || server->ssl == NULL) { if (server == NULL || server->ssl == NULL) {
@@ -315,7 +316,7 @@ int _ssl_do_handshake(struct dns_server_info *server)
return err; return err;
} }
int _ssl_session_reused(struct dns_server_info *server) static int _ssl_session_reused(struct dns_server_info *server)
{ {
int err = 0; int err = 0;
if (server == NULL || server->ssl == NULL) { if (server == NULL || server->ssl == NULL) {
@@ -328,9 +329,9 @@ int _ssl_session_reused(struct dns_server_info *server)
return err; return err;
} }
SSL_SESSION *_ssl_get1_session(struct dns_server_info *server) static SSL_SESSION *_ssl_get1_session(struct dns_server_info *server)
{ {
SSL_SESSION *ret = 0; SSL_SESSION *ret = NULL;
if (server == NULL || server->ssl == NULL) { if (server == NULL || server->ssl == NULL) {
return NULL; return NULL;
} }
@@ -377,7 +378,7 @@ dns_server_type_t dns_client_get_server_type(struct dns_server_info *server_info
return server_info->type; return server_info->type;
} }
const char *_dns_server_get_type_string(dns_server_type_t type) static const char *_dns_server_get_type_string(dns_server_type_t type)
{ {
const char *type_str = ""; const char *type_str = "";
@@ -431,7 +432,8 @@ errout:
/* check whether server exists */ /* check whether server exists */
static int _dns_client_server_exist(const char *server_ip, int port, dns_server_type_t server_type) static int _dns_client_server_exist(const char *server_ip, int port, dns_server_type_t server_type)
{ {
struct dns_server_info *server_info, *tmp; struct dns_server_info *server_info = NULL;
struct dns_server_info *tmp = NULL;
pthread_mutex_lock(&client.server_list_lock); pthread_mutex_lock(&client.server_list_lock);
list_for_each_entry_safe(server_info, tmp, &client.dns_server_list, list) list_for_each_entry_safe(server_info, tmp, &client.dns_server_list, list)
{ {
@@ -439,7 +441,7 @@ static int _dns_client_server_exist(const char *server_ip, int port, dns_server_
continue; continue;
} }
if (strncmp(server_info->ip, server_ip, DNS_HOSTNAME_LEN)) { if (strncmp(server_info->ip, server_ip, DNS_HOSTNAME_LEN) != 0) {
continue; continue;
} }
@@ -468,7 +470,8 @@ static void _dns_client_server_update_ttl(struct ping_host_struct *ping_host, co
/* get server control block by ip and port, type */ /* get server control block by ip and port, type */
static struct dns_server_info *_dns_client_get_server(char *server_ip, int port, dns_server_type_t server_type) static struct dns_server_info *_dns_client_get_server(char *server_ip, int port, dns_server_type_t server_type)
{ {
struct dns_server_info *server_info, *tmp; struct dns_server_info *server_info = NULL;
struct dns_server_info *tmp = NULL;
struct dns_server_info *server_info_return = NULL; struct dns_server_info *server_info_return = NULL;
if (server_ip == NULL) { if (server_ip == NULL) {
@@ -482,7 +485,7 @@ static struct dns_server_info *_dns_client_get_server(char *server_ip, int port,
continue; continue;
} }
if (strncmp(server_info->ip, server_ip, DNS_HOSTNAME_LEN)) { if (strncmp(server_info->ip, server_ip, DNS_HOSTNAME_LEN) != 0) {
continue; continue;
} }
@@ -499,7 +502,7 @@ static struct dns_server_info *_dns_client_get_server(char *server_ip, int port,
/* get server group by name */ /* get server group by name */
static struct dns_server_group *_dns_client_get_group(const char *group_name) static struct dns_server_group *_dns_client_get_group(const char *group_name)
{ {
unsigned long key; uint32_t key = 0;
struct dns_server_group *group = NULL; struct dns_server_group *group = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
@@ -541,7 +544,7 @@ static struct dns_server_group *_dns_client_get_dnsserver_group(const char *grou
} }
/* add server to group */ /* add server to group */
static int _dns_client_add_to_group(char *group_name, struct dns_server_info *server_info) static int _dns_client_add_to_group(const char *group_name, struct dns_server_info *server_info)
{ {
struct dns_server_group *group = NULL; struct dns_server_group *group = NULL;
struct dns_server_group_member *group_member = NULL; struct dns_server_group_member *group_member = NULL;
@@ -571,9 +574,10 @@ errout:
return -1; return -1;
} }
static int _dns_client_add_to_pending_group(char *group_name, char *server_ip, int port, dns_server_type_t server_type) static int _dns_client_add_to_pending_group(const char *group_name, char *server_ip, int port, dns_server_type_t server_type)
{ {
struct dns_server_pending *item, *tmp; struct dns_server_pending *item = NULL;
struct dns_server_pending *tmp = NULL;
struct dns_server_pending *pending = NULL; struct dns_server_pending *pending = NULL;
struct dns_server_pending_group *group = NULL; struct dns_server_pending_group *group = NULL;
@@ -617,7 +621,7 @@ errout:
} }
/* add server to group */ /* add server to group */
static int _dns_client_add_to_group_pending(char *group_name, char *server_ip, int port, dns_server_type_t server_type, static int _dns_client_add_to_group_pending(const char *group_name, char *server_ip, int port, dns_server_type_t server_type,
int ispending) int ispending)
{ {
struct dns_server_info *server_info = NULL; struct dns_server_info *server_info = NULL;
@@ -638,7 +642,7 @@ static int _dns_client_add_to_group_pending(char *group_name, char *server_ip, i
return _dns_client_add_to_group(group_name, server_info); return _dns_client_add_to_group(group_name, server_info);
} }
int dns_client_add_to_group(char *group_name, char *server_ip, int port, dns_server_type_t server_type) int dns_client_add_to_group(const char *group_name, char *server_ip, int port, dns_server_type_t server_type)
{ {
return _dns_client_add_to_group_pending(group_name, server_ip, port, server_type, 1); return _dns_client_add_to_group_pending(group_name, server_ip, port, server_type, 1);
} }
@@ -654,8 +658,8 @@ static int _dns_client_remove_member(struct dns_server_group_member *group_membe
static int _dns_client_remove_from_group(struct dns_server_group *group, struct dns_server_info *server_info) static int _dns_client_remove_from_group(struct dns_server_group *group, struct dns_server_info *server_info)
{ {
struct dns_server_group_member *group_member; struct dns_server_group_member *group_member = NULL;
struct dns_server_group_member *tmp; struct dns_server_group_member *tmp = NULL;
list_for_each_entry_safe(group_member, tmp, &group->head, list) list_for_each_entry_safe(group_member, tmp, &group->head, list)
{ {
@@ -671,9 +675,9 @@ static int _dns_client_remove_from_group(struct dns_server_group *group, struct
static int _dns_client_remove_server_from_groups(struct dns_server_info *server_info) static int _dns_client_remove_server_from_groups(struct dns_server_info *server_info)
{ {
struct dns_server_group *group; struct dns_server_group *group = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i = 0; unsigned long i = 0;
hash_for_each_safe(client.group, i, tmp, group, node) hash_for_each_safe(client.group, i, tmp, group, node)
{ {
@@ -683,7 +687,7 @@ static int _dns_client_remove_server_from_groups(struct dns_server_info *server_
return 0; return 0;
} }
int dns_client_remove_from_group(char *group_name, char *server_ip, int port, dns_server_type_t server_type) int dns_client_remove_from_group(const char *group_name, char *server_ip, int port, dns_server_type_t server_type)
{ {
struct dns_server_info *server_info = NULL; struct dns_server_info *server_info = NULL;
struct dns_server_group *group = NULL; struct dns_server_group *group = NULL;
@@ -701,9 +705,9 @@ int dns_client_remove_from_group(char *group_name, char *server_ip, int port, dn
return _dns_client_remove_from_group(group, server_info); return _dns_client_remove_from_group(group, server_info);
} }
int dns_client_add_group(char *group_name) int dns_client_add_group(const char *group_name)
{ {
unsigned long key; uint32_t key = 0;
struct dns_server_group *group = NULL; struct dns_server_group *group = NULL;
if (group_name == NULL) { if (group_name == NULL) {
@@ -738,8 +742,8 @@ errout:
static int _dns_client_remove_group(struct dns_server_group *group) static int _dns_client_remove_group(struct dns_server_group *group)
{ {
struct dns_server_group_member *group_member; struct dns_server_group_member *group_member = NULL;
struct dns_server_group_member *tmp; struct dns_server_group_member *tmp = NULL;
if (group == NULL) { if (group == NULL) {
return 0; return 0;
@@ -756,9 +760,9 @@ static int _dns_client_remove_group(struct dns_server_group *group)
return 0; return 0;
} }
int dns_client_remove_group(char *group_name) int dns_client_remove_group(const char *group_name)
{ {
unsigned long key; uint32_t key = 0;
struct dns_server_group *group = NULL; struct dns_server_group *group = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
@@ -783,9 +787,9 @@ int dns_client_remove_group(char *group_name)
static void _dns_client_group_remove_all(void) static void _dns_client_group_remove_all(void)
{ {
struct dns_server_group *group; struct dns_server_group *group = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i = 0; unsigned long i = 0;
hash_for_each_safe(client.group, i, tmp, group, node) hash_for_each_safe(client.group, i, tmp, group, node)
{ {
@@ -909,7 +913,7 @@ static int _dns_client_set_trusted_cert(SSL_CTX *ssl_ctx)
return 0; return 0;
} }
SSL_CTX *_ssl_ctx_get(void) static SSL_CTX *_ssl_ctx_get(void)
{ {
pthread_mutex_lock(&client.server_list_lock); pthread_mutex_lock(&client.server_list_lock);
SSL_CTX *ssl_ctx = client.ssl_ctx; SSL_CTX *ssl_ctx = client.ssl_ctx;
@@ -959,7 +963,7 @@ static int _dns_client_server_add(char *server_ip, char *server_host, int port,
int spki_data_len = 0; int spki_data_len = 0;
int ttl = 0; int ttl = 0;
char port_s[8]; char port_s[8];
int sock_type; int sock_type = 0;
char skip_check_cert = 0; char skip_check_cert = 0;
switch (server_type) { switch (server_type) {
@@ -1195,7 +1199,8 @@ static void _dns_client_server_close(struct dns_server_info *server_info)
/* remove all servers information */ /* remove all servers information */
static void _dns_client_server_remove_all(void) static void _dns_client_server_remove_all(void)
{ {
struct dns_server_info *server_info, *tmp; struct dns_server_info *server_info = NULL;
struct dns_server_info *tmp = NULL;
pthread_mutex_lock(&client.server_list_lock); pthread_mutex_lock(&client.server_list_lock);
list_for_each_entry_safe(server_info, tmp, &client.dns_server_list, list) list_for_each_entry_safe(server_info, tmp, &client.dns_server_list, list)
{ {
@@ -1210,7 +1215,8 @@ static void _dns_client_server_remove_all(void)
/* remove single server */ /* remove single server */
static int _dns_client_server_remove(char *server_ip, int port, dns_server_type_t server_type) static int _dns_client_server_remove(char *server_ip, int port, dns_server_type_t server_type)
{ {
struct dns_server_info *server_info, *tmp; struct dns_server_info *server_info = NULL;
struct dns_server_info *tmp = NULL;
/* find server and remove */ /* find server and remove */
pthread_mutex_lock(&client.server_list_lock); pthread_mutex_lock(&client.server_list_lock);
@@ -1220,7 +1226,7 @@ static int _dns_client_server_remove(char *server_ip, int port, dns_server_type_
continue; continue;
} }
if (strncmp(server_info->ip, server_ip, DNS_HOSTNAME_LEN)) { if (strncmp(server_info->ip, server_ip, DNS_HOSTNAME_LEN) != 0) {
continue; continue;
} }
@@ -1236,28 +1242,28 @@ static int _dns_client_server_remove(char *server_ip, int port, dns_server_type_
return -1; return -1;
} }
void _dns_client_server_pending_get(struct dns_server_pending *pending) static void _dns_client_server_pending_get(struct dns_server_pending *pending)
{ {
if (atomic_inc_return(&pending->refcnt) <= 0) { if (atomic_inc_return(&pending->refcnt) <= 0) {
tlog(TLOG_ERROR, "BUG: pending ref is invalid"); BUG("pending ref is invalid");
abort();
} }
} }
void _dns_client_server_pending_release_lck(struct dns_server_pending *pending) static void _dns_client_server_pending_release(struct dns_server_pending *pending)
{ {
struct dns_server_pending_group *group, *tmp; struct dns_server_pending_group *group = NULL;
struct dns_server_pending_group *tmp = NULL;
int refcnt = atomic_dec_return(&pending->refcnt); int refcnt = atomic_dec_return(&pending->refcnt);
if (refcnt) { if (refcnt) {
if (refcnt < 0) { if (refcnt < 0) {
tlog(TLOG_ERROR, "BUG: pending refcnt is %d", refcnt); BUG("BUG: pending refcnt is %d", refcnt);
abort();
} }
return; return;
} }
pthread_mutex_lock(&pending_server_mutex);
list_for_each_entry_safe(group, tmp, &pending->group_list, list) list_for_each_entry_safe(group, tmp, &pending->group_list, list)
{ {
list_del_init(&group->list); list_del_init(&group->list);
@@ -1265,26 +1271,16 @@ void _dns_client_server_pending_release_lck(struct dns_server_pending *pending)
} }
list_del_init(&pending->list); list_del_init(&pending->list);
pthread_mutex_unlock(&pending_server_mutex);
free(pending); free(pending);
} }
void _dns_client_server_pending_release(struct dns_server_pending *pending) static void _dns_client_server_pending_remove(struct dns_server_pending *pending)
{ {
int refcnt = atomic_dec_return(&pending->refcnt);
if (refcnt) {
if (refcnt < 0) {
tlog(TLOG_ERROR, "BUG: pending refcnt is %d", refcnt);
abort();
}
return;
}
pthread_mutex_lock(&pending_server_mutex); pthread_mutex_lock(&pending_server_mutex);
list_del_init(&pending->list); list_del_init(&pending->list);
pthread_mutex_unlock(&pending_server_mutex); pthread_mutex_unlock(&pending_server_mutex);
_dns_client_server_pending_release(pending);
free(pending);
} }
static int _dns_client_server_pending(char *server_ip, int port, dns_server_type_t server_type, static int _dns_client_server_pending(char *server_ip, int port, dns_server_type_t server_type,
@@ -1310,6 +1306,7 @@ static int _dns_client_server_pending(char *server_ip, int port, dns_server_type
pending->has_v6 = 0; pending->has_v6 = 0;
_dns_client_server_pending_get(pending); _dns_client_server_pending_get(pending);
INIT_LIST_HEAD(&pending->group_list); INIT_LIST_HEAD(&pending->group_list);
INIT_LIST_HEAD(&pending->retry_list);
memcpy(&pending->flags, flags, sizeof(struct client_dns_server_flags)); memcpy(&pending->flags, flags, sizeof(struct client_dns_server_flags));
pthread_mutex_lock(&pending_server_mutex); pthread_mutex_lock(&pending_server_mutex);
@@ -1327,7 +1324,7 @@ errout:
static int _dns_client_add_server_pending(char *server_ip, char *server_host, int port, dns_server_type_t server_type, static int _dns_client_add_server_pending(char *server_ip, char *server_host, int port, dns_server_type_t server_type,
struct client_dns_server_flags *flags, int ispending) struct client_dns_server_flags *flags, int ispending)
{ {
int ret; int ret = 0;
if (server_type >= DNS_SERVER_TYPE_END) { if (server_type >= DNS_SERVER_TYPE_END) {
tlog(TLOG_ERROR, "server type is invalid."); tlog(TLOG_ERROR, "server type is invalid.");
@@ -1374,22 +1371,20 @@ int dns_server_num(void)
static void _dns_client_query_get(struct dns_query_struct *query) static void _dns_client_query_get(struct dns_query_struct *query)
{ {
if (atomic_inc_return(&query->refcnt) <= 0) { if (atomic_inc_return(&query->refcnt) <= 0) {
tlog(TLOG_ERROR, "BUG: query ref is invalid, domain: %s", query->domain); BUG("query ref is invalid, domain: %s", query->domain);
abort();
} }
} }
static void _dns_client_query_release(struct dns_query_struct *query) static void _dns_client_query_release(struct dns_query_struct *query)
{ {
int refcnt = atomic_dec_return(&query->refcnt); int refcnt = atomic_dec_return(&query->refcnt);
int bucket = 0; unsigned long bucket = 0;
struct dns_query_replied *replied_map; struct dns_query_replied *replied_map = NULL;
struct hlist_node *tmp; struct hlist_node *tmp = NULL;
if (refcnt) { if (refcnt) {
if (refcnt < 0) { if (refcnt < 0) {
tlog(TLOG_ERROR, "BUG: refcnt is %d", refcnt); BUG("BUG: refcnt is %d", refcnt);
abort();
} }
return; return;
} }
@@ -1398,7 +1393,7 @@ static void _dns_client_query_release(struct dns_query_struct *query)
if (query->callback) { if (query->callback) {
tlog(TLOG_DEBUG, "result: %s, qtype: %d, hasresult: %d, id %d", query->domain, query->qtype, query->has_result, tlog(TLOG_DEBUG, "result: %s, qtype: %d, hasresult: %d, id %d", query->domain, query->qtype, query->has_result,
query->sid); query->sid);
query->callback(query->domain, DNS_QUERY_END, 0, NULL, NULL, 0, query->user_ptr); query->callback(query->domain, DNS_QUERY_END, NULL, NULL, NULL, 0, query->user_ptr);
} }
/* free resource */ /* free resource */
@@ -1433,7 +1428,8 @@ static void _dns_client_query_remove(struct dns_query_struct *query)
static void _dns_client_query_remove_all(void) static void _dns_client_query_remove_all(void)
{ {
struct dns_query_struct *query, *tmp; struct dns_query_struct *query = NULL;
struct dns_query_struct *tmp = NULL;
LIST_HEAD(check_list); LIST_HEAD(check_list);
pthread_mutex_lock(&client.domain_map_lock); pthread_mutex_lock(&client.domain_map_lock);
@@ -1448,8 +1444,6 @@ static void _dns_client_query_remove_all(void)
list_del_init(&query->period_list); list_del_init(&query->period_list);
_dns_client_query_remove(query); _dns_client_query_remove(query);
} }
return;
} }
static void _dns_client_check_udp_nat(struct dns_query_struct *query) static void _dns_client_check_udp_nat(struct dns_query_struct *query)
@@ -1482,8 +1476,8 @@ static void _dns_client_check_udp_nat(struct dns_query_struct *query)
static void _dns_client_check_tcp(void) static void _dns_client_check_tcp(void)
{ {
struct dns_server_info *server_info; struct dns_server_info *server_info = NULL;
time_t now; time_t now = 0;
time(&now); time(&now);
@@ -1517,7 +1511,7 @@ static struct dns_query_struct *_dns_client_get_request(unsigned short sid, char
struct dns_query_struct *query = NULL; struct dns_query_struct *query = NULL;
struct dns_query_struct *query_result = NULL; struct dns_query_struct *query_result = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
uint32_t key; uint32_t key = 0;
/* get query by hash key : id + domain */ /* get query by hash key : id + domain */
key = hash_string(domain); key = hash_string(domain);
@@ -1577,17 +1571,17 @@ static int _dns_replied_check_add(struct dns_query_struct *dns_query, struct soc
static int _dns_client_recv(struct dns_server_info *server_info, unsigned char *inpacket, int inpacket_len, static int _dns_client_recv(struct dns_server_info *server_info, unsigned char *inpacket, int inpacket_len,
struct sockaddr *from, socklen_t from_len) struct sockaddr *from, socklen_t from_len)
{ {
int len; int len = 0;
int i; int i = 0;
int qtype; int qtype = 0;
int qclass; int qclass = 0;
char domain[DNS_MAX_CNAME_LEN]; char domain[DNS_MAX_CNAME_LEN];
int rr_count; int rr_count = 0;
struct dns_rrs *rrs = NULL; struct dns_rrs *rrs = NULL;
unsigned char packet_buff[DNS_PACKSIZE]; unsigned char packet_buff[DNS_PACKSIZE];
struct dns_packet *packet = (struct dns_packet *)packet_buff; struct dns_packet *packet = (struct dns_packet *)packet_buff;
int ret = 0; int ret = 0;
struct dns_query_struct *query; struct dns_query_struct *query = NULL;
int request_num = 0; int request_num = 0;
int has_opt = 0; int has_opt = 0;
@@ -1638,7 +1632,7 @@ static int _dns_client_recv(struct dns_server_info *server_info, unsigned char *
} }
/* avoid multiple replies */ /* avoid multiple replies */
if (_dns_replied_check_add(query, (struct sockaddr *)from, from_len) != 0) { if (_dns_replied_check_add(query, from, from_len) != 0) {
_dns_client_query_release(query); _dns_client_query_release(query);
return 0; return 0;
} }
@@ -1683,6 +1677,9 @@ static int _dns_client_create_socket_udp(struct dns_server_info *server_info)
goto errout; goto errout;
} }
server_info->fd = fd;
server_info->status = DNS_SERVER_STATUS_CONNECTIONLESS;
memset(&event, 0, sizeof(event)); memset(&event, 0, sizeof(event));
event.events = EPOLLIN; event.events = EPOLLIN;
event.data.ptr = server_info; event.data.ptr = server_info;
@@ -1691,8 +1688,6 @@ static int _dns_client_create_socket_udp(struct dns_server_info *server_info)
return -1; return -1;
} }
server_info->fd = fd;
server_info->status = DNS_SERVER_STATUS_CONNECTIONLESS;
setsockopt(server_info->fd, IPPROTO_IP, IP_RECVTTL, &on, sizeof(on)); setsockopt(server_info->fd, IPPROTO_IP, IP_RECVTTL, &on, sizeof(on));
setsockopt(server_info->fd, SOL_IP, IP_TTL, &val, sizeof(val)); setsockopt(server_info->fd, SOL_IP, IP_TTL, &val, sizeof(val));
setsockopt(server_info->fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)); setsockopt(server_info->fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority));
@@ -1710,6 +1705,9 @@ errout:
close(fd); close(fd);
} }
server_info->fd = -1;
server_info->status = DNS_SERVER_STATUS_DISCONNECTED;
return -1; return -1;
} }
@@ -1744,7 +1742,7 @@ static int _DNS_client_create_socket_tcp(struct dns_server_info *server_info)
setsockopt(fd, IPPROTO_TCP, TCP_THIN_LINEAR_TIMEOUTS, &yes, sizeof(yes)); setsockopt(fd, IPPROTO_TCP, TCP_THIN_LINEAR_TIMEOUTS, &yes, sizeof(yes));
set_sock_keepalive(fd, 15, 3, 4); set_sock_keepalive(fd, 15, 3, 4);
if (connect(fd, (struct sockaddr *)&server_info->addr, server_info->ai_addrlen) != 0) { if (connect(fd, &server_info->addr, server_info->ai_addrlen) != 0) {
if (errno == ENETUNREACH) { if (errno == ENETUNREACH) {
tlog(TLOG_DEBUG, "connect %s failed, %s", server_info->ip, strerror(errno)); tlog(TLOG_DEBUG, "connect %s failed, %s", server_info->ip, strerror(errno));
goto errout; goto errout;
@@ -1826,7 +1824,7 @@ static int _DNS_client_create_socket_tls(struct dns_server_info *server_info, ch
setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)); setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority));
setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos)); setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos));
if (connect(fd, (struct sockaddr *)&server_info->addr, server_info->ai_addrlen) != 0) { if (connect(fd, &server_info->addr, server_info->ai_addrlen) != 0) {
if (errno == ENETUNREACH) { if (errno == ENETUNREACH) {
tlog(TLOG_DEBUG, "connect %s failed, %s", server_info->ip, strerror(errno)); tlog(TLOG_DEBUG, "connect %s failed, %s", server_info->ip, strerror(errno));
goto errout; goto errout;
@@ -1906,11 +1904,11 @@ static int _dns_client_create_socket(struct dns_server_info *server_info)
} else if (server_info->type == DNS_SERVER_TCP) { } else if (server_info->type == DNS_SERVER_TCP) {
return _DNS_client_create_socket_tcp(server_info); return _DNS_client_create_socket_tcp(server_info);
} else if (server_info->type == DNS_SERVER_TLS) { } else if (server_info->type == DNS_SERVER_TLS) {
struct client_dns_server_flag_tls *flag_tls; struct client_dns_server_flag_tls *flag_tls = NULL;
flag_tls = &server_info->flags.tls; flag_tls = &server_info->flags.tls;
return _DNS_client_create_socket_tls(server_info, flag_tls->hostname); return _DNS_client_create_socket_tls(server_info, flag_tls->hostname);
} else if (server_info->type == DNS_SERVER_HTTPS) { } else if (server_info->type == DNS_SERVER_HTTPS) {
struct client_dns_server_flag_https *flag_https; struct client_dns_server_flag_https *flag_https = NULL;
flag_https = &server_info->flags.https; flag_https = &server_info->flags.https;
return _DNS_client_create_socket_tls(server_info, flag_https->hostname); return _DNS_client_create_socket_tls(server_info, flag_https->hostname);
} else { } else {
@@ -1922,7 +1920,7 @@ static int _dns_client_create_socket(struct dns_server_info *server_info)
static int _dns_client_process_udp(struct dns_server_info *server_info, struct epoll_event *event, unsigned long now) static int _dns_client_process_udp(struct dns_server_info *server_info, struct epoll_event *event, unsigned long now)
{ {
int len; int len = 0;
unsigned char inpacket[DNS_IN_PACKSIZE]; unsigned char inpacket[DNS_IN_PACKSIZE];
struct sockaddr_storage from; struct sockaddr_storage from;
socklen_t from_len = sizeof(from); socklen_t from_len = sizeof(from);
@@ -1931,7 +1929,7 @@ static int _dns_client_process_udp(struct dns_server_info *server_info, struct e
struct iovec iov; struct iovec iov;
char ans_data[4096]; char ans_data[4096];
int ttl = 0; int ttl = 0;
struct cmsghdr *cmsg; struct cmsghdr *cmsg = NULL;
memset(&msg, 0, sizeof(msg)); memset(&msg, 0, sizeof(msg));
iov.iov_base = (char *)inpacket; iov.iov_base = (char *)inpacket;
@@ -2037,7 +2035,7 @@ static int _dns_client_socket_ssl_send(struct dns_server_info *server, const voi
static int _dns_client_socket_ssl_recv(struct dns_server_info *server, void *buf, int num) static int _dns_client_socket_ssl_recv(struct dns_server_info *server, void *buf, int num)
{ {
int ret = 0; ssize_t ret = 0;
int ssl_ret = 0; int ssl_ret = 0;
unsigned long ssl_err = 0; unsigned long ssl_err = 0;
@@ -2211,8 +2209,7 @@ static int _dns_client_process_tcp_buff(struct dns_server_info *server_info)
server_info->recv_buff.len -= len; server_info->recv_buff.len -= len;
if (server_info->recv_buff.len < 0) { if (server_info->recv_buff.len < 0) {
tlog(TLOG_ERROR, "Internal error."); BUG("Internal error.");
abort();
} }
/* move to next result */ /* move to next result */
@@ -2234,7 +2231,7 @@ out:
static int _dns_client_process_tcp(struct dns_server_info *server_info, struct epoll_event *event, unsigned long now) static int _dns_client_process_tcp(struct dns_server_info *server_info, struct epoll_event *event, unsigned long now)
{ {
int len; int len = 0;
int ret = -1; int ret = -1;
if (event->events & EPOLLIN) { if (event->events & EPOLLIN) {
@@ -2289,8 +2286,6 @@ static int _dns_client_process_tcp(struct dns_server_info *server_info, struct e
/* when connected */ /* when connected */
if (event->events & EPOLLOUT) { if (event->events & EPOLLOUT) {
struct epoll_event event;
if (server_info->status == DNS_SERVER_STATUS_CONNECTING) { if (server_info->status == DNS_SERVER_STATUS_CONNECTING) {
server_info->status = DNS_SERVER_STATUS_CONNECTED; server_info->status = DNS_SERVER_STATUS_CONNECTED;
tlog(TLOG_DEBUG, "tcp server %s connected", server_info->ip); tlog(TLOG_DEBUG, "tcp server %s connected", server_info->ip);
@@ -2315,8 +2310,7 @@ static int _dns_client_process_tcp(struct dns_server_info *server_info, struct e
if (server_info->send_buff.len > 0) { if (server_info->send_buff.len > 0) {
memmove(server_info->send_buff.data, server_info->send_buff.data + len, server_info->send_buff.len); memmove(server_info->send_buff.data, server_info->send_buff.data + len, server_info->send_buff.len);
} else if (server_info->send_buff.len < 0) { } else if (server_info->send_buff.len < 0) {
tlog(TLOG_ERROR, "Internal Error"); BUG("Internal Error");
abort();
} }
pthread_mutex_unlock(&client.server_list_lock); pthread_mutex_unlock(&client.server_list_lock);
} }
@@ -2326,10 +2320,11 @@ static int _dns_client_process_tcp(struct dns_server_info *server_info, struct e
} }
/* clear epllout event */ /* clear epllout event */
memset(&event, 0, sizeof(event)); struct epoll_event mod_event;
event.events = EPOLLIN; memset(&mod_event, 0, sizeof(mod_event));
event.data.ptr = server_info; mod_event.events = EPOLLIN;
if (epoll_ctl(client.epoll_fd, EPOLL_CTL_MOD, server_info->fd, &event) != 0) { mod_event.data.ptr = server_info;
if (epoll_ctl(client.epoll_fd, EPOLL_CTL_MOD, server_info->fd, &mod_event) != 0) {
tlog(TLOG_ERROR, "epoll ctl failed, %s", strerror(errno)); tlog(TLOG_ERROR, "epoll ctl failed, %s", strerror(errno));
goto errout; goto errout;
} }
@@ -2351,15 +2346,16 @@ static inline int _dns_client_to_hex(int c)
{ {
if (c > 0x9) { if (c > 0x9) {
return 'A' + c - 0xA; return 'A' + c - 0xA;
} else {
return '0' + c;
} }
return '0' + c;
} }
static int _dns_client_tls_matchName(const char *host, const char *pattern, int size) static int _dns_client_tls_matchName(const char *host, const char *pattern, int size)
{ {
int match = -1; int match = -1;
int i = 0, j = 0; int i = 0;
int j = 0;
while (i < size && host[j] != '\0') { while (i < size && host[j] != '\0') {
if (toupper(pattern[i]) == toupper(host[j])) { if (toupper(pattern[i]) == toupper(host[j])) {
@@ -2533,7 +2529,7 @@ static int _dns_client_process_tls(struct dns_server_info *server_info, struct e
{ {
int ret = -1; int ret = -1;
struct epoll_event fd_event; struct epoll_event fd_event;
int ssl_ret; int ssl_ret = 0;
if (unlikely(server_info->ssl == NULL)) { if (unlikely(server_info->ssl == NULL)) {
tlog(TLOG_ERROR, "ssl is invalid."); tlog(TLOG_ERROR, "ssl is invalid.");
@@ -2644,7 +2640,7 @@ static int _dns_client_send_udp(struct dns_server_info *server_info, void *packe
return -1; return -1;
} }
send_len = sendto(server_info->fd, packet, len, 0, (struct sockaddr *)&server_info->addr, server_info->ai_addrlen); send_len = sendto(server_info->fd, packet, len, 0, &server_info->addr, server_info->ai_addrlen);
if (send_len != len) { if (send_len != len) {
return -1; return -1;
} }
@@ -2833,7 +2829,7 @@ static int _dns_client_send_packet(struct dns_query_struct *query, void *packet,
{ {
server_info = group_member->server; server_info = group_member->server;
if (server_info->prohibit) { if (server_info->prohibit) {
time_t now; time_t now = 0;
time(&now); time(&now);
if ((now - 60 < server_info->last_send) && (now - 5 > server_info->last_recv)) { if ((now - 60 < server_info->last_send) && (now - 5 > server_info->last_recv)) {
continue; continue;
@@ -2888,7 +2884,7 @@ static int _dns_client_send_packet(struct dns_query_struct *query, void *packet,
tlog(TLOG_DEBUG, "send query to %s failed, %s, type: %d", server_info->ip, strerror(send_err), tlog(TLOG_DEBUG, "send query to %s failed, %s, type: %d", server_info->ip, strerror(send_err),
server_info->type); server_info->type);
time_t now; time_t now = 0;
time(&now); time(&now);
if (now - 5 > server_info->last_recv || send_err != ENOMEM) { if (now - 5 > server_info->last_recv || send_err != ENOMEM) {
server_info->prohibit = 1; server_info->prohibit = 1;
@@ -2925,12 +2921,12 @@ static int _dns_client_dns_add_ecs(struct dns_query_struct *query, struct dns_pa
return dns_add_OPT_ECS(packet, &query->ecs.ecs); return dns_add_OPT_ECS(packet, &query->ecs.ecs);
} }
static int _dns_client_send_query(struct dns_query_struct *query, char *doamin) static int _dns_client_send_query(struct dns_query_struct *query, const char *doamin)
{ {
unsigned char packet_buff[DNS_PACKSIZE]; unsigned char packet_buff[DNS_PACKSIZE];
unsigned char inpacket[DNS_IN_PACKSIZE]; unsigned char inpacket[DNS_IN_PACKSIZE];
struct dns_packet *packet = (struct dns_packet *)packet_buff; struct dns_packet *packet = (struct dns_packet *)packet_buff;
int encode_len; int encode_len = 0;
/* init dns packet head */ /* init dns packet head */
struct dns_head head; struct dns_head head;
@@ -2969,8 +2965,7 @@ static int _dns_client_send_query(struct dns_query_struct *query, char *doamin)
} }
if (encode_len > DNS_IN_PACKSIZE) { if (encode_len > DNS_IN_PACKSIZE) {
tlog(TLOG_ERROR, "size is invalid."); BUG("size is invalid.");
abort();
return -1; return -1;
} }
@@ -2978,7 +2973,7 @@ static int _dns_client_send_query(struct dns_query_struct *query, char *doamin)
return _dns_client_send_packet(query, inpacket, encode_len); return _dns_client_send_packet(query, inpacket, encode_len);
} }
int _dns_client_query_setup_default_ecs(struct dns_query_struct *query) static int _dns_client_query_setup_default_ecs(struct dns_query_struct *query)
{ {
int add_ipv4_ecs = 0; int add_ipv4_ecs = 0;
int add_ipv6_ecs = 0; int add_ipv6_ecs = 0;
@@ -3008,7 +3003,7 @@ int _dns_client_query_setup_default_ecs(struct dns_query_struct *query)
return 0; return 0;
} }
int _dns_client_query_parser_options(struct dns_query_struct *query, struct dns_query_options *options) static int _dns_client_query_parser_options(struct dns_query_struct *query, struct dns_query_options *options)
{ {
if (options == NULL) { if (options == NULL) {
_dns_client_query_setup_default_ecs(query); _dns_client_query_setup_default_ecs(query);
@@ -3018,7 +3013,7 @@ int _dns_client_query_parser_options(struct dns_query_struct *query, struct dns_
if (options->enable_flag & DNS_QUEY_OPTION_ECS_IP) { if (options->enable_flag & DNS_QUEY_OPTION_ECS_IP) {
struct sockaddr_storage addr; struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr); socklen_t addr_len = sizeof(addr);
struct dns_opt_ecs *ecs; struct dns_opt_ecs *ecs = NULL;
ecs = &query->ecs.ecs; ecs = &query->ecs.ecs;
getaddr_by_host(options->ecs_ip.ip, (struct sockaddr *)&addr, &addr_len); getaddr_by_host(options->ecs_ip.ip, (struct sockaddr *)&addr, &addr_len);
@@ -3029,13 +3024,13 @@ int _dns_client_query_parser_options(struct dns_query_struct *query, struct dns_
switch (addr.ss_family) { switch (addr.ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)&addr; addr_in = (struct sockaddr_in *)&addr;
ecs->family = DNS_OPT_ECS_FAMILY_IPV4; ecs->family = DNS_OPT_ECS_FAMILY_IPV4;
memcpy(&ecs->addr, &addr_in->sin_addr.s_addr, 4); memcpy(&ecs->addr, &addr_in->sin_addr.s_addr, 4);
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)&addr; addr_in6 = (struct sockaddr_in6 *)&addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
memcpy(&ecs->addr, addr_in6->sin6_addr.s6_addr + 12, 4); memcpy(&ecs->addr, addr_in6->sin6_addr.s6_addr + 12, 4);
@@ -3072,8 +3067,8 @@ int _dns_client_query_parser_options(struct dns_query_struct *query, struct dns_
return 0; return 0;
} }
int dns_client_query(char *domain, int qtype, dns_client_callback callback, void *user_ptr, const char *group_name, int dns_client_query(const char *domain, int qtype, dns_client_callback callback, void *user_ptr,
struct dns_query_options *options) const char *group_name, struct dns_query_options *options)
{ {
struct dns_query_struct *query = NULL; struct dns_query_struct *query = NULL;
int ret = 0; int ret = 0;
@@ -3150,7 +3145,8 @@ errout:
static void _dns_client_check_servers(void) static void _dns_client_check_servers(void)
{ {
struct dns_server_info *server_info, *tmp; struct dns_server_info *server_info = NULL;
struct dns_server_info *tmp = NULL;
static unsigned int second_count = 0; static unsigned int second_count = 0;
second_count++; second_count++;
@@ -3175,7 +3171,7 @@ static void _dns_client_check_servers(void)
pthread_mutex_unlock(&client.server_list_lock); pthread_mutex_unlock(&client.server_list_lock);
} }
static int _dns_client_pending_server_resolve(char *domain, dns_rtcode_t rtcode, dns_type_t addr_type, char *ip, static int _dns_client_pending_server_resolve(const char *domain, dns_rtcode_t rtcode, dns_type_t addr_type, char *ip,
unsigned int ping_time, void *user_ptr) unsigned int ping_time, void *user_ptr)
{ {
struct dns_server_pending *pending = user_ptr; struct dns_server_pending *pending = user_ptr;
@@ -3205,7 +3201,8 @@ static int _dns_client_pending_server_resolve(char *domain, dns_rtcode_t rtcode,
static int _dns_client_add_pendings(struct dns_server_pending *pending, char *ip) static int _dns_client_add_pendings(struct dns_server_pending *pending, char *ip)
{ {
struct dns_server_pending_group *group, *tmp; struct dns_server_pending_group *group = NULL;
struct dns_server_pending_group *tmp = NULL;
if (_dns_client_add_server_pending(ip, pending->host, pending->port, pending->type, &pending->flags, 0) != 0) { if (_dns_client_add_server_pending(ip, pending->host, pending->port, pending->type, &pending->flags, 0) != 0) {
return -1; return -1;
@@ -3226,21 +3223,33 @@ static int _dns_client_add_pendings(struct dns_server_pending *pending, char *ip
static void _dns_client_remove_all_pending_servers(void) static void _dns_client_remove_all_pending_servers(void)
{ {
struct dns_server_pending *pending, *tmp; struct dns_server_pending *pending = NULL;
struct dns_server_pending *tmp = NULL;
LIST_HEAD(remove_list);
pthread_mutex_lock(&pending_server_mutex); pthread_mutex_lock(&pending_server_mutex);
list_for_each_entry_safe(pending, tmp, &pending_servers, list) list_for_each_entry_safe(pending, tmp, &pending_servers, list)
{ {
list_del_init(&pending->list); list_del_init(&pending->list);
_dns_client_server_pending_release_lck(pending); list_add(&pending->retry_list, &remove_list);
_dns_client_server_pending_get(pending);
} }
pthread_mutex_unlock(&pending_server_mutex); pthread_mutex_unlock(&pending_server_mutex);
list_for_each_entry_safe(pending, tmp, &remove_list, retry_list)
{
list_del_init(&pending->retry_list);
_dns_client_server_pending_release(pending);
_dns_client_server_pending_remove(pending);
}
} }
static void _dns_client_add_pending_servers(void) static void _dns_client_add_pending_servers(void)
{ {
struct dns_server_pending *pending, *tmp; struct dns_server_pending *pending = NULL;
struct dns_server_pending *tmp = NULL;
static int dely = 0; static int dely = 0;
LIST_HEAD(retry_list);
/* add pending server after 3 seconds */ /* add pending server after 3 seconds */
if (++dely < 3) { if (++dely < 3) {
@@ -3250,6 +3259,13 @@ static void _dns_client_add_pending_servers(void)
pthread_mutex_lock(&pending_server_mutex); pthread_mutex_lock(&pending_server_mutex);
list_for_each_entry_safe(pending, tmp, &pending_servers, list) list_for_each_entry_safe(pending, tmp, &pending_servers, list)
{
list_add(&pending->retry_list, &retry_list);
_dns_client_server_pending_get(pending);
}
pthread_mutex_unlock(&pending_server_mutex);
list_for_each_entry_safe(pending, tmp, &retry_list, retry_list)
{ {
/* send dns type A, AAAA query to bootstrap DNS server */ /* send dns type A, AAAA query to bootstrap DNS server */
int add_success = 0; int add_success = 0;
@@ -3259,7 +3275,8 @@ static void _dns_client_add_pending_servers(void)
pending->query_v4 = 1; pending->query_v4 = 1;
_dns_client_server_pending_get(pending); _dns_client_server_pending_get(pending);
if (dns_server_query(pending->host, DNS_T_A, 0, _dns_client_pending_server_resolve, pending) != 0) { if (dns_server_query(pending->host, DNS_T_A, 0, _dns_client_pending_server_resolve, pending) != 0) {
_dns_client_server_pending_release_lck(pending); _dns_client_server_pending_release(pending);
pending->query_v4 = 0;
} }
} }
@@ -3267,10 +3284,14 @@ static void _dns_client_add_pending_servers(void)
pending->query_v6 = 1; pending->query_v6 = 1;
_dns_client_server_pending_get(pending); _dns_client_server_pending_get(pending);
if (dns_server_query(pending->host, DNS_T_AAAA, 0, _dns_client_pending_server_resolve, pending) != 0) { if (dns_server_query(pending->host, DNS_T_AAAA, 0, _dns_client_pending_server_resolve, pending) != 0) {
_dns_client_server_pending_release_lck(pending); _dns_client_server_pending_release(pending);
pending->query_v4 = 0;
} }
} }
list_del_init(&pending->retry_list);
_dns_client_server_pending_release(pending);
/* if both A, AAAA has query result, select fastest IP address */ /* if both A, AAAA has query result, select fastest IP address */
if (pending->has_v4 && pending->has_v6) { if (pending->has_v4 && pending->has_v6) {
if (pending->ping_time_v4 <= pending->ping_time_v6 && pending->ipv4[0]) { if (pending->ping_time_v4 <= pending->ping_time_v6 && pending->ipv4[0]) {
@@ -3291,14 +3312,17 @@ static void _dns_client_add_pending_servers(void)
} }
pending->retry_cnt++; pending->retry_cnt++;
if (pending->retry_cnt >= DNS_PENDING_SERVER_RETRY || add_success) { if (pending->retry_cnt == 1) {
continue;
}
if (pending->retry_cnt - 1 > DNS_PENDING_SERVER_RETRY || add_success) {
if (add_success == 0) { if (add_success == 0) {
tlog(TLOG_WARN, "add pending DNS server %s failed.", pending->host); tlog(TLOG_WARN, "add pending DNS server %s failed.", pending->host);
} }
list_del_init(&pending->list); _dns_client_server_pending_remove(pending);
_dns_client_server_pending_release_lck(pending);
} else { } else {
tlog(TLOG_INFO, "add pending DNS server %s failed, retry %d...", pending->host, pending->retry_cnt); tlog(TLOG_INFO, "add pending DNS server %s failed, retry %d...", pending->host, pending->retry_cnt - 1);
pending->query_v4 = 0; pending->query_v4 = 0;
pending->query_v6 = 0; pending->query_v6 = 0;
} }
@@ -3312,10 +3336,9 @@ static void _dns_client_add_pending_servers(void)
return; return;
} }
_dns_client_server_pending_release_lck(pending); _dns_client_server_pending_release(pending);
} }
} }
pthread_mutex_unlock(&pending_server_mutex);
} }
static void _dns_client_period_run_second(void) static void _dns_client_period_run_second(void)
@@ -3327,7 +3350,8 @@ static void _dns_client_period_run_second(void)
static void _dns_client_period_run(void) static void _dns_client_period_run(void)
{ {
struct dns_query_struct *query, *tmp; struct dns_query_struct *query = NULL;
struct dns_query_struct *tmp = NULL;
static unsigned int msec = 0; static unsigned int msec = 0;
msec++; msec++;
@@ -3366,24 +3390,22 @@ static void _dns_client_period_run(void)
if (msec % 10 == 0) { if (msec % 10 == 0) {
_dns_client_period_run_second(); _dns_client_period_run_second();
} }
return;
} }
static void *_dns_client_work(void *arg) static void *_dns_client_work(void *arg)
{ {
struct epoll_event events[DNS_MAX_EVENTS + 1]; struct epoll_event events[DNS_MAX_EVENTS + 1];
int num; int num = 0;
int i; int i = 0;
unsigned long now = {0}; unsigned long now = {0};
unsigned int sleep = 100; unsigned int sleep = 100;
int sleep_time; int sleep_time = 0;
unsigned long expect_time = 0; unsigned long expect_time = 0;
sleep_time = sleep; sleep_time = sleep;
now = get_tick_count() - sleep; now = get_tick_count() - sleep;
expect_time = now + sleep; expect_time = now + sleep;
while (client.run) { while (atomic_read(&client.run)) {
now = get_tick_count(); now = get_tick_count();
if (now >= expect_time) { if (now >= expect_time) {
_dns_client_period_run(); _dns_client_period_run();
@@ -3427,7 +3449,7 @@ int dns_client_set_ecs(char *ip, int subnet)
switch (addr.ss_family) { switch (addr.ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)&addr; addr_in = (struct sockaddr_in *)&addr;
memcpy(&client.ecs_ipv4.ecs.addr, &addr_in->sin_addr.s_addr, 4); memcpy(&client.ecs_ipv4.ecs.addr, &addr_in->sin_addr.s_addr, 4);
client.ecs_ipv4.ecs.source_prefix = subnet; client.ecs_ipv4.ecs.source_prefix = subnet;
@@ -3436,7 +3458,7 @@ int dns_client_set_ecs(char *ip, int subnet)
client.ecs_ipv4.enable = 1; client.ecs_ipv4.enable = 1;
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)&addr; addr_in6 = (struct sockaddr_in6 *)&addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
client.ecs_ipv4.ecs.source_prefix = subnet; client.ecs_ipv4.ecs.source_prefix = subnet;
@@ -3461,7 +3483,7 @@ int dns_client_init(void)
{ {
pthread_attr_t attr; pthread_attr_t attr;
int epollfd = -1; int epollfd = -1;
int ret; int ret = 0;
if (client.epoll_fd > 0) { if (client.epoll_fd > 0) {
return -1; return -1;
@@ -3492,7 +3514,7 @@ int dns_client_init(void)
client.default_group = _dns_client_get_group(DNS_SERVER_GROUP_DEFAULT); client.default_group = _dns_client_get_group(DNS_SERVER_GROUP_DEFAULT);
client.epoll_fd = epollfd; client.epoll_fd = epollfd;
client.run = 1; atomic_set(&client.run, 1);
/* start work task */ /* start work task */
ret = pthread_create(&client.tid, &attr, _dns_client_work, NULL); ret = pthread_create(&client.tid, &attr, _dns_client_work, NULL);
@@ -3503,10 +3525,11 @@ int dns_client_init(void)
return 0; return 0;
errout: errout:
if (client.tid > 0) { if (client.tid) {
void *retval = NULL; void *retval = NULL;
client.run = 0; atomic_set(&client.run, 0);
pthread_join(client.tid, &retval); pthread_join(client.tid, &retval);
client.tid = 0;
} }
if (epollfd) { if (epollfd) {
@@ -3521,10 +3544,11 @@ errout:
void dns_client_exit(void) void dns_client_exit(void)
{ {
if (client.tid > 0) { if (client.tid) {
void *ret = NULL; void *ret = NULL;
client.run = 0; atomic_set(&client.run, 0);
pthread_join(client.tid, &ret); pthread_join(client.tid, &ret);
client.tid = 0;
} }
/* free all resouces */ /* free all resouces */

12
src/dns_client.h
View File

@@ -56,7 +56,7 @@ int dns_client_set_ecs(char *ip, int subnet);
struct dns_server_info; struct dns_server_info;
/* query result notify function */ /* query result notify function */
typedef int (*dns_client_callback)(char *domain, dns_result_type rtype, struct dns_server_info *server_info, typedef int (*dns_client_callback)(const char *domain, dns_result_type rtype, struct dns_server_info *server_info,
struct dns_packet *packet, unsigned char *inpacket, int inpacket_len, struct dns_packet *packet, unsigned char *inpacket, int inpacket_len,
void *user_ptr); void *user_ptr);
@@ -80,7 +80,7 @@ struct dns_query_options {
}; };
/* query domain */ /* query domain */
int dns_client_query(char *domain, int qtype, dns_client_callback callback, void *user_ptr, const char *group_name, int dns_client_query(const char *domain, int qtype, dns_client_callback callback, void *user_ptr, const char *group_name,
struct dns_query_options *options); struct dns_query_options *options);
void dns_client_exit(void); void dns_client_exit(void);
@@ -128,13 +128,13 @@ int dns_client_add_server(char *server_ip, int port, dns_server_type_t server_ty
/* remove remote dns server */ /* remove remote dns server */
int dns_client_remove_server(char *server_ip, int port, dns_server_type_t server_type); int dns_client_remove_server(char *server_ip, int port, dns_server_type_t server_type);
int dns_client_add_group(char *group_name); int dns_client_add_group(const char *group_name);
int dns_client_add_to_group(char *group_name, char *server_ip, int port, dns_server_type_t server_type); int dns_client_add_to_group(const char *group_name, char *server_ip, int port, dns_server_type_t server_type);
int dns_client_remove_from_group(char *group_name, char *server_ip, int port, dns_server_type_t server_type); int dns_client_remove_from_group(const char *group_name, char *server_ip, int port, dns_server_type_t server_type);
int dns_client_remove_group(char *group_name); int dns_client_remove_group(const char *group_name);
int dns_server_num(void); int dns_server_num(void);

91
src/dns_conf.c
View File

@@ -46,8 +46,8 @@ struct dns_group_table dns_group_table;
struct dns_ptr_table dns_ptr_table; struct dns_ptr_table dns_ptr_table;
char dns_conf_dnsmasq_lease_file[DNS_MAX_PATH]; static char dns_conf_dnsmasq_lease_file[DNS_MAX_PATH];
time_t dns_conf_dnsmasq_lease_file_time; static time_t dns_conf_dnsmasq_lease_file_time;
struct dns_hosts_table dns_hosts_table; struct dns_hosts_table dns_hosts_table;
int dns_hosts_record_num; int dns_hosts_record_num;
@@ -80,7 +80,7 @@ struct dns_domain_check_orders dns_conf_check_orders = {
{.type = DOMAIN_CHECK_TCP, .tcp_port = 443}, {.type = DOMAIN_CHECK_TCP, .tcp_port = 443},
}, },
}; };
int dns_has_cap_ping = 0; static int dns_has_cap_ping = 0;
/* logging */ /* logging */
int dns_conf_log_level = TLOG_ERROR; int dns_conf_log_level = TLOG_ERROR;
@@ -249,7 +249,7 @@ static void _config_group_table_destroy(void)
{ {
struct dns_server_groups *group = NULL; struct dns_server_groups *group = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i; unsigned long i = 0;
hash_for_each_safe(dns_group_table.group, i, tmp, group, node) hash_for_each_safe(dns_group_table.group, i, tmp, group, node)
{ {
@@ -261,7 +261,7 @@ static void _config_group_table_destroy(void)
static int _config_server(int argc, char *argv[], dns_server_type_t type, int default_port) static int _config_server(int argc, char *argv[], dns_server_type_t type, int default_port)
{ {
int index = dns_conf_server_num; int index = dns_conf_server_num;
struct dns_servers *server; struct dns_servers *server = NULL;
int port = -1; int port = -1;
char *ip = NULL; char *ip = NULL;
int opt = 0; int opt = 0;
@@ -455,7 +455,7 @@ static int _config_domain_rule_add(char *domain, enum domain_rule type, void *ru
/* Reverse string, for suffix match */ /* Reverse string, for suffix match */
len = strlen(domain); len = strlen(domain);
if (len >= sizeof(domain_key)) { if (len >= (int)sizeof(domain_key)) {
tlog(TLOG_ERROR, "domain name %s too long", domain); tlog(TLOG_ERROR, "domain name %s too long", domain);
goto errout; goto errout;
} }
@@ -516,7 +516,7 @@ static int _config_domain_rule_flag_set(char *domain, unsigned int flag, unsigne
int len = 0; int len = 0;
len = strlen(domain); len = strlen(domain);
if (len >= sizeof(domain_key)) { if (len >= (int)sizeof(domain_key)) {
tlog(TLOG_ERROR, "domain %s too long", domain); tlog(TLOG_ERROR, "domain %s too long", domain);
return -1; return -1;
} }
@@ -574,7 +574,7 @@ static void _config_ipset_table_destroy(void)
{ {
struct dns_ipset_name *ipset_name = NULL; struct dns_ipset_name *ipset_name = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i; unsigned long i = 0;
hash_for_each_safe(dns_ipset_table.ipset, i, tmp, ipset_name, node) hash_for_each_safe(dns_ipset_table.ipset, i, tmp, ipset_name, node)
{ {
@@ -619,8 +619,8 @@ static int _conf_domain_rule_ipset(char *domain, const char *ipsetname)
struct dns_ipset_rule *ipset_rule = NULL; struct dns_ipset_rule *ipset_rule = NULL;
const char *ipset = NULL; const char *ipset = NULL;
char *copied_name = NULL; char *copied_name = NULL;
enum domain_rule type; enum domain_rule type = 0;
int ignore_flag; int ignore_flag = 0;
copied_name = strdup(ipsetname); copied_name = strdup(ipsetname);
@@ -630,10 +630,10 @@ static int _conf_domain_rule_ipset(char *domain, const char *ipsetname)
for (char *tok = strtok(copied_name, ","); tok; tok = strtok(NULL, ",")) { for (char *tok = strtok(copied_name, ","); tok; tok = strtok(NULL, ",")) {
if (tok[0] == '#') { if (tok[0] == '#') {
if (strncmp(tok, "#6:", 3u) == 0) { if (strncmp(tok, "#6:", 3U) == 0) {
type = DOMAIN_RULE_IPSET_IPV6; type = DOMAIN_RULE_IPSET_IPV6;
ignore_flag = DOMAIN_FLAG_IPSET_IPV6_IGN; ignore_flag = DOMAIN_FLAG_IPSET_IPV6_IGN;
} else if (strncmp(tok, "#4:", 3u) == 0) { } else if (strncmp(tok, "#4:", 3U) == 0) {
type = DOMAIN_RULE_IPSET_IPV4; type = DOMAIN_RULE_IPSET_IPV4;
ignore_flag = DOMAIN_FLAG_IPSET_IPV4_IGN; ignore_flag = DOMAIN_FLAG_IPSET_IPV4_IGN;
} else { } else {
@@ -710,7 +710,7 @@ static int _conf_domain_rule_address(char *domain, const char *domain_address)
struct dns_address_IPV6 *address_ipv6 = NULL; struct dns_address_IPV6 *address_ipv6 = NULL;
void *address = NULL; void *address = NULL;
char ip[MAX_IP_LEN]; char ip[MAX_IP_LEN];
int port; int port = 0;
struct sockaddr_storage addr; struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr); socklen_t addr_len = sizeof(addr);
enum domain_rule type = 0; enum domain_rule type = 0;
@@ -762,7 +762,7 @@ static int _conf_domain_rule_address(char *domain, const char *domain_address)
switch (addr.ss_family) { switch (addr.ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
address_ipv4 = malloc(sizeof(*address_ipv4)); address_ipv4 = malloc(sizeof(*address_ipv4));
if (address_ipv4 == NULL) { if (address_ipv4 == NULL) {
goto errout; goto errout;
@@ -774,7 +774,7 @@ static int _conf_domain_rule_address(char *domain, const char *domain_address)
address = address_ipv4; address = address_ipv4;
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)&addr; addr_in6 = (struct sockaddr_in6 *)&addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
address_ipv4 = malloc(sizeof(*address_ipv4)); address_ipv4 = malloc(sizeof(*address_ipv4));
@@ -836,8 +836,8 @@ errout:
static int _config_speed_check_mode_parser(struct dns_domain_check_orders *check_orders, const char *mode) static int _config_speed_check_mode_parser(struct dns_domain_check_orders *check_orders, const char *mode)
{ {
char tmpbuff[DNS_MAX_OPT_LEN]; char tmpbuff[DNS_MAX_OPT_LEN];
char *field; char *field = NULL;
char *ptr; char *ptr = NULL;
int order = 0; int order = 0;
int port = 80; int port = 80;
int i = 0; int i = 0;
@@ -910,7 +910,7 @@ static int _config_speed_check_mode(void *data, int argc, char *argv[])
static int _config_bind_ip(int argc, char *argv[], DNS_BIND_TYPE type) static int _config_bind_ip(int argc, char *argv[], DNS_BIND_TYPE type)
{ {
int index = dns_conf_bind_ip_num; int index = dns_conf_bind_ip_num;
struct dns_bind_ip *bind_ip; struct dns_bind_ip *bind_ip = NULL;
char *ip = NULL; char *ip = NULL;
int opt = 0; int opt = 0;
char group_name[DNS_GROUP_NAME_LEN]; char group_name[DNS_GROUP_NAME_LEN];
@@ -1144,8 +1144,8 @@ errout:
static radix_node_t *_create_addr_node(char *addr) static radix_node_t *_create_addr_node(char *addr)
{ {
radix_node_t *node; radix_node_t *node = NULL;
void *p; void *p = NULL;
prefix_t prefix; prefix_t prefix;
const char *errmsg = NULL; const char *errmsg = NULL;
radix_tree_t *tree = NULL; radix_tree_t *tree = NULL;
@@ -1212,7 +1212,7 @@ static int _config_iplist_rule(char *subnet, enum address_rule rule)
static int _config_qtype_soa(void *data, int argc, char *argv[]) static int _config_qtype_soa(void *data, int argc, char *argv[])
{ {
struct dns_qtype_soa_list *soa_list; struct dns_qtype_soa_list *soa_list = NULL;
int i = 0; int i = 0;
if (argc <= 1) { if (argc <= 1) {
@@ -1242,7 +1242,7 @@ static void _config_qtype_soa_table_destroy(void)
{ {
struct dns_qtype_soa_list *soa_list = NULL; struct dns_qtype_soa_list *soa_list = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i; unsigned long i = 0;
hash_for_each_safe(dns_qtype_soa_table.qtype, i, tmp, soa_list, node) hash_for_each_safe(dns_qtype_soa_table.qtype, i, tmp, soa_list, node)
{ {
@@ -1505,7 +1505,7 @@ static int _conf_ptr_add(const char *hostname, const char *ip)
{ {
struct dns_ptr *ptr = NULL; struct dns_ptr *ptr = NULL;
struct sockaddr_storage addr; struct sockaddr_storage addr;
unsigned char *paddr; unsigned char *paddr = NULL;
socklen_t addr_len = sizeof(addr); socklen_t addr_len = sizeof(addr);
char ptr_domain[DNS_MAX_PTR_LEN]; char ptr_domain[DNS_MAX_PTR_LEN];
@@ -1515,13 +1515,13 @@ static int _conf_ptr_add(const char *hostname, const char *ip)
switch (addr.ss_family) { switch (addr.ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)&addr; addr_in = (struct sockaddr_in *)&addr;
paddr = (unsigned char *)&(addr_in->sin_addr.s_addr); paddr = (unsigned char *)&(addr_in->sin_addr.s_addr);
snprintf(ptr_domain, sizeof(ptr_domain), "%d.%d.%d.%d.in-addr.arpa", paddr[3], paddr[2], paddr[1], paddr[0]); snprintf(ptr_domain, sizeof(ptr_domain), "%d.%d.%d.%d.in-addr.arpa", paddr[3], paddr[2], paddr[1], paddr[0]);
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)&addr; addr_in6 = (struct sockaddr_in6 *)&addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
paddr = addr_in6->sin6_addr.s6_addr + 12; paddr = addr_in6->sin6_addr.s6_addr + 12;
@@ -1565,7 +1565,7 @@ static void _config_ptr_table_destroy(void)
{ {
struct dns_ptr *ptr = NULL; struct dns_ptr *ptr = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i; unsigned long i = 0;
hash_for_each_safe(dns_ptr_table.ptr, i, tmp, ptr, node) hash_for_each_safe(dns_ptr_table.ptr, i, tmp, ptr, node)
{ {
@@ -1617,7 +1617,7 @@ static int _conf_host_add(const char *hostname, const char *ip, dns_hosts_type h
{ {
struct dns_hosts *host = NULL; struct dns_hosts *host = NULL;
struct dns_hosts *host_other __attribute__((unused)); struct dns_hosts *host_other __attribute__((unused));
;
struct sockaddr_storage addr; struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr); socklen_t addr_len = sizeof(addr);
int dns_type = 0; int dns_type = 0;
@@ -1633,7 +1633,7 @@ static int _conf_host_add(const char *hostname, const char *ip, dns_hosts_type h
dns_type_other = DNS_T_AAAA; dns_type_other = DNS_T_AAAA;
break; break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)&addr; addr_in6 = (struct sockaddr_in6 *)&addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
dns_type = DNS_T_A; dns_type = DNS_T_A;
@@ -1660,13 +1660,13 @@ static int _conf_host_add(const char *hostname, const char *ip, dns_hosts_type h
switch (addr.ss_family) { switch (addr.ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)&addr; addr_in = (struct sockaddr_in *)&addr;
memcpy(host->ipv4_addr, &addr_in->sin_addr.s_addr, 4); memcpy(host->ipv4_addr, &addr_in->sin_addr.s_addr, 4);
host->is_soa = 0; host->is_soa = 0;
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)&addr; addr_in6 = (struct sockaddr_in6 *)&addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
memcpy(host->ipv4_addr, addr_in6->sin6_addr.s6_addr + 12, 4); memcpy(host->ipv4_addr, addr_in6->sin6_addr.s6_addr + 12, 4);
@@ -1694,7 +1694,7 @@ static int _conf_dhcp_lease_dnsmasq_add(const char *file)
char hostname[DNS_MAX_CNAME_LEN]; char hostname[DNS_MAX_CNAME_LEN];
int ret = 0; int ret = 0;
int line_no = 0; int line_no = 0;
int filed_num; int filed_num = 0;
fp = fopen(file, "r"); fp = fopen(file, "r");
if (fp == NULL) { if (fp == NULL) {
@@ -1710,7 +1710,7 @@ static int _conf_dhcp_lease_dnsmasq_add(const char *file)
continue; continue;
} }
if (strncmp(hostname, "*", DNS_MAX_CNAME_LEN) == 0) { if (strncmp(hostname, "*", DNS_MAX_CNAME_LEN - 1) == 0) {
continue; continue;
} }
@@ -1760,7 +1760,7 @@ static void _config_host_table_destroy(void)
{ {
struct dns_hosts *host = NULL; struct dns_hosts *host = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i; unsigned long i = 0;
hash_for_each_safe(dns_hosts_table.hosts, i, tmp, host, node) hash_for_each_safe(dns_hosts_table.hosts, i, tmp, host, node)
{ {
@@ -1774,7 +1774,7 @@ static void _config_host_table_destroy(void)
int dns_server_check_update_hosts(void) int dns_server_check_update_hosts(void)
{ {
struct stat statbuf; struct stat statbuf;
time_t now; time_t now = 0;
if (dns_conf_dnsmasq_lease_file[0] == '\0') { if (dns_conf_dnsmasq_lease_file[0] == '\0') {
return -1; return -1;
@@ -1838,12 +1838,12 @@ static void _config_setup_smartdns_domain(void)
} }
/* get host name again */ /* get host name again */
if (strncmp(hostname, "(none)", DNS_MAX_CNAME_LEN) == 0) { if (strncmp(hostname, "(none)", DNS_MAX_CNAME_LEN - 1) == 0) {
gethostname(hostname, DNS_MAX_CNAME_LEN); gethostname(hostname, DNS_MAX_CNAME_LEN);
} }
/* if hostname is (none), return smartdns */ /* if hostname is (none), return smartdns */
if (strncmp(hostname, "(none)", DNS_MAX_CNAME_LEN) == 0) { if (strncmp(hostname, "(none)", DNS_MAX_CNAME_LEN - 1) == 0) {
safe_strncpy(hostname, "smartdns", DNS_MAX_CNAME_LEN); safe_strncpy(hostname, "smartdns", DNS_MAX_CNAME_LEN);
} }
@@ -1917,14 +1917,16 @@ static struct config_item _config_item[] = {
static int _conf_printf(const char *file, int lineno, int ret) static int _conf_printf(const char *file, int lineno, int ret)
{ {
if (ret == CONF_RET_ERR) { switch (ret) {
tlog(TLOG_ERROR, "process config file '%s' failed at line %d.", file, lineno); case CONF_RET_ERR:
syslog(LOG_NOTICE, "process config file '%s' failed at line %d.", file, lineno); case CONF_RET_WARN:
return -1; case CONF_RET_BADCONF:
} else if (ret == CONF_RET_WARN) {
tlog(TLOG_WARN, "process config file '%s' failed at line %d.", file, lineno); tlog(TLOG_WARN, "process config file '%s' failed at line %d.", file, lineno);
syslog(LOG_NOTICE, "process config file '%s' failed at line %d.", file, lineno); syslog(LOG_NOTICE, "process config file '%s' failed at line %d.", file, lineno);
return -1; return -1;
break;
default:
break;
} }
return 0; return 0;
@@ -1932,7 +1934,7 @@ static int _conf_printf(const char *file, int lineno, int ret)
int config_addtional_file(void *data, int argc, char *argv[]) int config_addtional_file(void *data, int argc, char *argv[])
{ {
char *conf_file; char *conf_file = NULL;
char file_path[DNS_MAX_PATH]; char file_path[DNS_MAX_PATH];
char file_path_dir[DNS_MAX_PATH]; char file_path_dir[DNS_MAX_PATH];
@@ -2002,7 +2004,8 @@ void dns_server_load_exit(void)
static int _dns_conf_speed_check_mode_verify(void) static int _dns_conf_speed_check_mode_verify(void)
{ {
int i, j; int i = 0;
int j = 0;
int print_log = 0; int print_log = 0;
if (dns_has_cap_ping == 1) { if (dns_has_cap_ping == 1) {
@@ -2031,7 +2034,7 @@ static int _dns_conf_speed_check_mode_verify(void)
static int _dns_ping_cap_check(void) static int _dns_ping_cap_check(void)
{ {
int has_ping = 0; int has_ping = 0;
int has_raw_cap; int has_raw_cap = 0;
has_raw_cap = has_network_raw_cap(); has_raw_cap = has_network_raw_cap();
has_ping = has_unprivileged_ping(); has_ping = has_unprivileged_ping();

367
src/dns_server.c
View File

File diff suppressed because it is too large Load Diff

4
src/dns_server.h
View File

@@ -37,11 +37,11 @@ void dns_server_stop(void);
void dns_server_exit(void); void dns_server_exit(void);
/* query result notify function */ /* query result notify function */
typedef int (*dns_result_callback)(char *domain, dns_rtcode_t rtcode, dns_type_t addr_type, char *ip, typedef int (*dns_result_callback)(const char *domain, dns_rtcode_t rtcode, dns_type_t addr_type, char *ip,
unsigned int ping_time, void *user_ptr); unsigned int ping_time, void *user_ptr);
/* query domain */ /* query domain */
int dns_server_query(char *domain, int qtype, uint32_t server_flags, dns_result_callback callback, void *user_ptr); int dns_server_query(const char *domain, int qtype, uint32_t server_flags, dns_result_callback callback, void *user_ptr);
#ifdef __cpluscplus #ifdef __cpluscplus
} }

127
src/fast_ping.c
View File

@@ -124,7 +124,7 @@ struct ping_host_struct {
}; };
struct fast_ping_struct { struct fast_ping_struct {
int run; atomic_t run;
pthread_t tid; pthread_t tid;
pthread_mutex_t lock; pthread_mutex_t lock;
unsigned short ident; unsigned short ident;
@@ -151,7 +151,7 @@ static int bool_print_log = 1;
static uint16_t _fast_ping_checksum(uint16_t *header, size_t len) static uint16_t _fast_ping_checksum(uint16_t *header, size_t len)
{ {
uint32_t sum = 0; uint32_t sum = 0;
int i; unsigned int i = 0;
for (i = 0; i < len / sizeof(uint16_t); i++) { for (i = 0; i < len / sizeof(uint16_t); i++) {
sum += ntohs(header[i]); sum += ntohs(header[i]);
@@ -262,13 +262,13 @@ static uint32_t _fast_ping_hash_key(unsigned int sid, struct sockaddr *addr)
switch (addr->sa_family) { switch (addr->sa_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)addr; addr_in = (struct sockaddr_in *)addr;
sin_addr = &addr_in->sin_addr.s_addr; sin_addr = &addr_in->sin_addr.s_addr;
sin_addr_len = IPV4_ADDR_LEN; sin_addr_len = IPV4_ADDR_LEN;
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)addr; addr_in6 = (struct sockaddr_in6 *)addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
sin_addr = addr_in6->sin6_addr.s6_addr + 12; sin_addr = addr_in6->sin6_addr.s6_addr + 12;
@@ -358,7 +358,7 @@ static void _fast_ping_close_host_sock(struct ping_host_struct *ping_host)
if (ping_host->fd < 0) { if (ping_host->fd < 0) {
return; return;
} }
struct epoll_event *event; struct epoll_event *event = NULL;
event = (struct epoll_event *)1; event = (struct epoll_event *)1;
epoll_ctl(ping.epoll_fd, EPOLL_CTL_DEL, ping_host->fd, event); epoll_ctl(ping.epoll_fd, EPOLL_CTL_DEL, ping_host->fd, event);
close(ping_host->fd); close(ping_host->fd);
@@ -442,8 +442,8 @@ static int _fast_ping_sendping_v6(struct ping_host_struct *ping_host)
packet->msg.seq = ping_host->seq; packet->msg.seq = ping_host->seq;
icmp6->icmp6_cksum = _fast_ping_checksum((void *)packet, sizeof(struct fast_ping_packet)); icmp6->icmp6_cksum = _fast_ping_checksum((void *)packet, sizeof(struct fast_ping_packet));
len = sendto(ping.fd_icmp6, &ping_host->packet, sizeof(struct fast_ping_packet), 0, len = sendto(ping.fd_icmp6, &ping_host->packet, sizeof(struct fast_ping_packet), 0, &ping_host->addr,
(struct sockaddr *)&ping_host->addr, ping_host->addr_len); ping_host->addr_len);
if (len < 0 || len != sizeof(struct fast_ping_packet)) { if (len < 0 || len != sizeof(struct fast_ping_packet)) {
int err = errno; int err = errno;
if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) { if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) {
@@ -474,7 +474,7 @@ static int _fast_ping_sendping_v4(struct ping_host_struct *ping_host)
{ {
struct fast_ping_packet *packet = &ping_host->packet; struct fast_ping_packet *packet = &ping_host->packet;
struct icmp *icmp = &packet->icmp; struct icmp *icmp = &packet->icmp;
int len; int len = 0;
ping_host->seq++; ping_host->seq++;
memset(icmp, 0, sizeof(*icmp)); memset(icmp, 0, sizeof(*icmp));
@@ -491,8 +491,7 @@ static int _fast_ping_sendping_v4(struct ping_host_struct *ping_host)
packet->msg.cookie = ping_host->cookie; packet->msg.cookie = ping_host->cookie;
icmp->icmp_cksum = _fast_ping_checksum((void *)packet, sizeof(struct fast_ping_packet)); icmp->icmp_cksum = _fast_ping_checksum((void *)packet, sizeof(struct fast_ping_packet));
len = sendto(ping.fd_icmp, packet, sizeof(struct fast_ping_packet), 0, (struct sockaddr *)&ping_host->addr, len = sendto(ping.fd_icmp, packet, sizeof(struct fast_ping_packet), 0, &ping_host->addr, ping_host->addr_len);
ping_host->addr_len);
if (len < 0 || len != sizeof(struct fast_ping_packet)) { if (len < 0 || len != sizeof(struct fast_ping_packet)) {
int err = errno; int err = errno;
if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) { if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) {
@@ -514,7 +513,7 @@ errout:
static int _fast_ping_sendping_udp(struct ping_host_struct *ping_host) static int _fast_ping_sendping_udp(struct ping_host_struct *ping_host)
{ {
struct ping_dns_head dns_head; struct ping_dns_head dns_head;
int len; int len = 0;
int flag = 0; int flag = 0;
int fd = 0; int fd = 0;
@@ -539,7 +538,7 @@ static int _fast_ping_sendping_udp(struct ping_host_struct *ping_host)
dns_head.id = htons(ping_host->sid); dns_head.id = htons(ping_host->sid);
dns_head.flag = flag; dns_head.flag = flag;
gettimeofday(&ping_host->last, NULL); gettimeofday(&ping_host->last, NULL);
len = sendto(fd, &dns_head, sizeof(dns_head), 0, (struct sockaddr *)&ping_host->addr, ping_host->addr_len); len = sendto(fd, &dns_head, sizeof(dns_head), 0, &ping_host->addr, ping_host->addr_len);
if (len < 0 || len != sizeof(dns_head)) { if (len < 0 || len != sizeof(dns_head)) {
int err = errno; int err = errno;
if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) { if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) {
@@ -561,7 +560,7 @@ errout:
static int _fast_ping_sendping_tcp(struct ping_host_struct *ping_host) static int _fast_ping_sendping_tcp(struct ping_host_struct *ping_host)
{ {
struct epoll_event event; struct epoll_event event;
int flags; int flags = 0;
int fd = -1; int fd = -1;
int yes = 1; int yes = 1;
const int priority = SOCKET_PRIORITY; const int priority = SOCKET_PRIORITY;
@@ -586,7 +585,7 @@ static int _fast_ping_sendping_tcp(struct ping_host_struct *ping_host)
set_sock_lingertime(fd, 0); set_sock_lingertime(fd, 0);
ping_host->seq++; ping_host->seq++;
if (connect(fd, (struct sockaddr *)&ping_host->addr, ping_host->addr_len) != 0) { if (connect(fd, &ping_host->addr, ping_host->addr_len) != 0) {
if (errno != EINPROGRESS) { if (errno != EINPROGRESS) {
char ping_host_name[PING_MAX_HOSTLEN]; char ping_host_name[PING_MAX_HOSTLEN];
if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) { if (errno == ENETUNREACH || errno == EINVAL || errno == EADDRNOTAVAIL) {
@@ -711,6 +710,9 @@ static int _fast_ping_create_icmp_sock(FAST_PING_TYPE type)
setsockopt(fd, SOL_IP, IP_TTL, &val, sizeof(val)); setsockopt(fd, SOL_IP, IP_TTL, &val, sizeof(val));
setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos)); setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos));
icmp_host->fd = fd;
icmp_host->type = type;
memset(&event, 0, sizeof(event)); memset(&event, 0, sizeof(event));
event.events = EPOLLIN; event.events = EPOLLIN;
event.data.ptr = icmp_host; event.data.ptr = icmp_host;
@@ -718,12 +720,14 @@ static int _fast_ping_create_icmp_sock(FAST_PING_TYPE type)
goto errout; goto errout;
} }
icmp_host->fd = fd;
icmp_host->type = type;
return fd; return fd;
errout: errout:
close(fd); close(fd);
if (icmp_host) {
icmp_host->fd = -1;
icmp_host->type = 0;
}
return -1; return -1;
} }
@@ -883,7 +887,7 @@ static int _fast_ping_get_addr_by_icmp(const char *ip_str, int port, struct addr
struct addrinfo *gai = NULL; struct addrinfo *gai = NULL;
int socktype = 0; int socktype = 0;
int domain = -1; int domain = -1;
FAST_PING_TYPE ping_type; FAST_PING_TYPE ping_type = 0;
int sockproto = 0; int sockproto = 0;
char *service = NULL; char *service = NULL;
@@ -932,7 +936,7 @@ static int _fast_ping_get_addr_by_tcp(const char *ip_str, int port, struct addri
{ {
struct addrinfo *gai = NULL; struct addrinfo *gai = NULL;
int socktype = 0; int socktype = 0;
FAST_PING_TYPE ping_type; FAST_PING_TYPE ping_type = 0;
int sockproto = 0; int sockproto = 0;
char *service = NULL; char *service = NULL;
char port_str[MAX_IP_LEN]; char port_str[MAX_IP_LEN];
@@ -968,7 +972,7 @@ static int _fast_ping_get_addr_by_dns(const char *ip_str, int port, struct addri
{ {
struct addrinfo *gai = NULL; struct addrinfo *gai = NULL;
int socktype = 0; int socktype = 0;
FAST_PING_TYPE ping_type; FAST_PING_TYPE ping_type = 0;
int sockproto = 0; int sockproto = 0;
char port_str[MAX_IP_LEN]; char port_str[MAX_IP_LEN];
int domain = -1; int domain = -1;
@@ -1045,11 +1049,11 @@ struct ping_host_struct *fast_ping_start(PING_TYPE type, const char *host, int c
{ {
struct ping_host_struct *ping_host = NULL; struct ping_host_struct *ping_host = NULL;
struct addrinfo *gai = NULL; struct addrinfo *gai = NULL;
uint32_t addrkey; uint32_t addrkey = 0;
char ip_str[PING_MAX_HOSTLEN]; char ip_str[PING_MAX_HOSTLEN];
int port = -1; int port = -1;
FAST_PING_TYPE ping_type = FAST_PING_END; FAST_PING_TYPE ping_type = FAST_PING_END;
unsigned int seed; unsigned int seed = 0;
int ret = 0; int ret = 0;
if (parse_ip(host, ip_str, &port) != 0) { if (parse_ip(host, ip_str, &port) != 0) {
@@ -1114,7 +1118,7 @@ struct ping_host_struct *fast_ping_start(PING_TYPE type, const char *host, int c
return ping_host; return ping_host;
errout_remove: errout_remove:
ping_host->ping_callback(ping_host, ping_host->host, PING_RESULT_ERROR, &ping_host->addr, ping_host->addr_len, ping_host->ping_callback(ping_host, ping_host->host, PING_RESULT_ERROR, &ping_host->addr, ping_host->addr_len,
ping_host->seq, ping_host->ttl, 0, ping_host->error, ping_host->userptr); ping_host->seq, ping_host->ttl, NULL, ping_host->error, ping_host->userptr);
fast_ping_stop(ping_host); fast_ping_stop(ping_host);
_fast_ping_host_put(ping_host); _fast_ping_host_put(ping_host);
ping_host = NULL; ping_host = NULL;
@@ -1154,22 +1158,24 @@ static void tv_sub(struct timeval *out, struct timeval *in)
static struct fast_ping_packet *_fast_ping_icmp6_packet(struct ping_host_struct *ping_host, struct msghdr *msg, static struct fast_ping_packet *_fast_ping_icmp6_packet(struct ping_host_struct *ping_host, struct msghdr *msg,
u_char *packet_data, int data_len) u_char *packet_data, int data_len)
{ {
int icmp_len; int icmp_len = 0;
struct fast_ping_packet *packet = (struct fast_ping_packet *)packet_data; struct fast_ping_packet *packet = (struct fast_ping_packet *)packet_data;
struct icmp6_hdr *icmp6 = &packet->icmp6; struct icmp6_hdr *icmp6 = &packet->icmp6;
struct cmsghdr *c; struct cmsghdr *c = NULL;
int hops = 0; int hops = 0;
for (c = CMSG_FIRSTHDR(msg); c; c = CMSG_NXTHDR(msg, c)) { for (c = CMSG_FIRSTHDR(msg); c; c = CMSG_NXTHDR(msg, c)) {
if (c->cmsg_level != IPPROTO_IPV6) if (c->cmsg_level != IPPROTO_IPV6) {
continue; continue;
}
switch (c->cmsg_type) { switch (c->cmsg_type) {
case IPV6_HOPLIMIT: case IPV6_HOPLIMIT:
#ifdef IPV6_2292HOPLIMIT #ifdef IPV6_2292HOPLIMIT
case IPV6_2292HOPLIMIT: case IPV6_2292HOPLIMIT:
#endif #endif
if (c->cmsg_len < CMSG_LEN(sizeof(int))) if (c->cmsg_len < CMSG_LEN(sizeof(int))) {
continue; continue;
}
memcpy(&hops, CMSG_DATA(c), sizeof(hops)); memcpy(&hops, CMSG_DATA(c), sizeof(hops));
} }
} }
@@ -1200,10 +1206,10 @@ static struct fast_ping_packet *_fast_ping_icmp_packet(struct ping_host_struct *
u_char *packet_data, int data_len) u_char *packet_data, int data_len)
{ {
struct ip *ip = (struct ip *)packet_data; struct ip *ip = (struct ip *)packet_data;
struct fast_ping_packet *packet; struct fast_ping_packet *packet = NULL;
struct icmp *icmp; struct icmp *icmp = NULL;
int hlen; int hlen = 0;
int icmp_len; int icmp_len = 0;
hlen = ip->ip_hl << 2; hlen = ip->ip_hl << 2;
packet = (struct fast_ping_packet *)(packet_data + hlen); packet = (struct fast_ping_packet *)(packet_data + hlen);
@@ -1216,6 +1222,11 @@ static struct fast_ping_packet *_fast_ping_icmp_packet(struct ping_host_struct *
return NULL; return NULL;
} }
if (icmp->icmp_type != ICMP_ECHOREPLY) {
tlog(TLOG_DEBUG, "icmp type faild, %d:%d", icmp->icmp_type, ICMP_ECHOREPLY);
return NULL;
}
if (ping.no_unprivileged_ping) { if (ping.no_unprivileged_ping) {
if (ip->ip_p != IPPROTO_ICMP) { if (ip->ip_p != IPPROTO_ICMP) {
tlog(TLOG_ERROR, "ip type faild, %d:%d", ip->ip_p, IPPROTO_ICMP); tlog(TLOG_ERROR, "ip type faild, %d:%d", ip->ip_p, IPPROTO_ICMP);
@@ -1228,12 +1239,6 @@ static struct fast_ping_packet *_fast_ping_icmp_packet(struct ping_host_struct *
} }
} }
if (icmp->icmp_type != ICMP_ECHOREPLY) {
tlog(TLOG_DEBUG, "icmp type faild, %d:%d", icmp->icmp_type, ICMP_ECHOREPLY);
return NULL;
}
return packet; return packet;
} }
@@ -1264,18 +1269,18 @@ errout:
static int _fast_ping_process_icmp(struct ping_host_struct *ping_host, struct timeval *now) static int _fast_ping_process_icmp(struct ping_host_struct *ping_host, struct timeval *now)
{ {
int len; int len = 0;
u_char inpacket[ICMP_INPACKET_SIZE]; u_char inpacket[ICMP_INPACKET_SIZE];
struct sockaddr_storage from; struct sockaddr_storage from;
struct ping_host_struct *recv_ping_host; struct ping_host_struct *recv_ping_host = NULL;
struct fast_ping_packet *packet = NULL; struct fast_ping_packet *packet = NULL;
socklen_t from_len = sizeof(from); socklen_t from_len = sizeof(from);
uint32_t addrkey; uint32_t addrkey = 0;
struct timeval tvresult = *now; struct timeval tvresult = *now;
struct timeval *tvsend = NULL; struct timeval *tvsend = NULL;
unsigned int sid; unsigned int sid = 0;
unsigned int seq; unsigned int seq = 0;
unsigned int cookie; unsigned int cookie = 0;
struct msghdr msg; struct msghdr msg;
struct iovec iov; struct iovec iov;
char ans_data[4096]; char ans_data[4096];
@@ -1392,20 +1397,20 @@ errout:
static int _fast_ping_process_udp(struct ping_host_struct *ping_host, struct timeval *now) static int _fast_ping_process_udp(struct ping_host_struct *ping_host, struct timeval *now)
{ {
int len; ssize_t len = 0;
u_char inpacket[ICMP_INPACKET_SIZE]; u_char inpacket[ICMP_INPACKET_SIZE];
struct sockaddr_storage from; struct sockaddr_storage from;
struct ping_host_struct *recv_ping_host; struct ping_host_struct *recv_ping_host = NULL;
struct ping_dns_head *dns_head = NULL; struct ping_dns_head *dns_head = NULL;
socklen_t from_len = sizeof(from); socklen_t from_len = sizeof(from);
uint32_t addrkey; uint32_t addrkey = 0;
struct timeval tvresult = *now; struct timeval tvresult = *now;
struct timeval *tvsend = NULL; struct timeval *tvsend = NULL;
unsigned int sid; unsigned int sid = 0;
struct msghdr msg; struct msghdr msg;
struct iovec iov; struct iovec iov;
char ans_data[4096]; char ans_data[4096];
struct cmsghdr *cmsg; struct cmsghdr *cmsg = NULL;
int ttl = 0; int ttl = 0;
memset(&msg, 0, sizeof(msg)); memset(&msg, 0, sizeof(msg));
@@ -1440,7 +1445,7 @@ static int _fast_ping_process_udp(struct ping_host_struct *ping_host, struct tim
from_len = msg.msg_namelen; from_len = msg.msg_namelen;
dns_head = (struct ping_dns_head *)inpacket; dns_head = (struct ping_dns_head *)inpacket;
if (len < sizeof(*dns_head)) { if (len < (ssize_t)sizeof(*dns_head)) {
goto errout; goto errout;
} }
@@ -1515,7 +1520,7 @@ static void _fast_ping_remove_all(void)
struct ping_host_struct *ping_host = NULL; struct ping_host_struct *ping_host = NULL;
struct ping_host_struct *ping_host_tmp = NULL; struct ping_host_struct *ping_host_tmp = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i; unsigned long i = 0;
LIST_HEAD(remove_list); LIST_HEAD(remove_list);
@@ -1537,11 +1542,11 @@ static void _fast_ping_period_run(void)
struct ping_host_struct *ping_host = NULL; struct ping_host_struct *ping_host = NULL;
struct ping_host_struct *ping_host_tmp = NULL; struct ping_host_struct *ping_host_tmp = NULL;
struct hlist_node *tmp = NULL; struct hlist_node *tmp = NULL;
int i = 0; unsigned long i = 0;
struct timeval now; struct timeval now;
struct timezone tz; struct timezone tz;
struct timeval interval; struct timeval interval;
int64_t millisecond; int64_t millisecond = 0;
gettimeofday(&now, &tz); gettimeofday(&now, &tz);
LIST_HEAD(action); LIST_HEAD(action);
@@ -1607,8 +1612,8 @@ static void _fast_ping_period_run(void)
static void *_fast_ping_work(void *arg) static void *_fast_ping_work(void *arg)
{ {
struct epoll_event events[PING_MAX_EVENTS + 1]; struct epoll_event events[PING_MAX_EVENTS + 1];
int num; int num = 0;
int i; int i = 0;
unsigned long now = {0}; unsigned long now = {0};
struct timeval tvnow = {0}; struct timeval tvnow = {0};
int sleep = 100; int sleep = 100;
@@ -1618,7 +1623,7 @@ static void *_fast_ping_work(void *arg)
sleep_time = sleep; sleep_time = sleep;
now = get_tick_count() - sleep; now = get_tick_count() - sleep;
expect_time = now + sleep; expect_time = now + sleep;
while (ping.run) { while (atomic_read(&ping.run)) {
now = get_tick_count(); now = get_tick_count();
if (now >= expect_time) { if (now >= expect_time) {
_fast_ping_period_run(); _fast_ping_period_run();
@@ -1658,7 +1663,7 @@ int fast_ping_init(void)
{ {
pthread_attr_t attr; pthread_attr_t attr;
int epollfd = -1; int epollfd = -1;
int ret; int ret = 0;
bool_print_log = 1; bool_print_log = 1;
if (ping.epoll_fd > 0) { if (ping.epoll_fd > 0) {
@@ -1680,7 +1685,7 @@ int fast_ping_init(void)
ping.epoll_fd = epollfd; ping.epoll_fd = epollfd;
ping.no_unprivileged_ping = !has_unprivileged_ping(); ping.no_unprivileged_ping = !has_unprivileged_ping();
ping.ident = (getpid() & 0XFFFF); ping.ident = (getpid() & 0XFFFF);
ping.run = 1; atomic_set(&ping.run, 1);
ret = pthread_create(&ping.tid, &attr, _fast_ping_work, NULL); ret = pthread_create(&ping.tid, &attr, _fast_ping_work, NULL);
if (ret != 0) { if (ret != 0) {
tlog(TLOG_ERROR, "create ping work thread failed, %s\n", strerror(errno)); tlog(TLOG_ERROR, "create ping work thread failed, %s\n", strerror(errno));
@@ -1689,10 +1694,11 @@ int fast_ping_init(void)
return 0; return 0;
errout: errout:
if (ping.tid > 0) { if (ping.tid) {
void *retval = NULL; void *retval = NULL;
ping.run = 0; atomic_set(&ping.run, 0);
pthread_join(ping.tid, &retval); pthread_join(ping.tid, &retval);
ping.tid = 0;
} }
if (epollfd) { if (epollfd) {
@@ -1730,10 +1736,11 @@ static void _fast_ping_close_fds(void)
void fast_ping_exit(void) void fast_ping_exit(void)
{ {
if (ping.tid > 0) { if (ping.tid) {
void *ret = NULL; void *ret = NULL;
ping.run = 0; atomic_set(&ping.run, 0);
pthread_join(ping.tid, &ret); pthread_join(ping.tid, &ret);
ping.tid = 0;
} }
_fast_ping_close_fds(); _fast_ping_close_fds();

4
src/http_parse.c
View File

@@ -108,7 +108,7 @@ struct http_head_fields *http_head_first_fields(struct http_head *http_head)
const char *http_head_get_fields_value(struct http_head *http_head, const char *name) const char *http_head_get_fields_value(struct http_head *http_head, const char *name)
{ {
unsigned long key; uint32_t key;
struct http_head_fields *filed; struct http_head_fields *filed;
key = hash_string(name); key = hash_string(name);
@@ -193,7 +193,7 @@ int http_head_get_data_len(struct http_head *http_head)
static int _http_head_add_fields(struct http_head *http_head, char *name, char *value) static int _http_head_add_fields(struct http_head *http_head, char *name, char *value)
{ {
unsigned long key = 0; uint32_t key = 0;
struct http_head_fields *fields = NULL; struct http_head_fields *fields = NULL;
fields = malloc(sizeof(*fields)); fields = malloc(sizeof(*fields));
if (fields == NULL) { if (fields == NULL) {

15
src/include/atomic.h
View File

@@ -20,6 +20,11 @@
#ifndef _GENERIC_ATOMIC_H #ifndef _GENERIC_ATOMIC_H
#define _GENERIC_ATOMIC_H #define _GENERIC_ATOMIC_H
#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
#define READ_ONCE(x) \
({ typeof(x) ___x = ACCESS_ONCE(x); ___x; })
/** /**
* Atomic type. * Atomic type.
*/ */
@@ -35,14 +40,20 @@ typedef struct {
* *
* Atomically reads the value of @v. * Atomically reads the value of @v.
*/ */
#define atomic_read(v) ((v)->counter) static inline int atomic_read(const atomic_t *v)
{
return READ_ONCE((v)->counter);
}
/** /**
* Set atomic variable * Set atomic variable
* @param v pointer of type atomic_t * @param v pointer of type atomic_t
* @param i required value * @param i required value
*/ */
#define atomic_set(v,i) (((v)->counter) = (i)) static inline void atomic_set(atomic_t *v, int i)
{
v->counter = i;
}
/** /**
* Add to the atomic variable * Add to the atomic variable

1
src/include/conf.h
View File

@@ -30,6 +30,7 @@
#define CONF_RET_ERR -1 #define CONF_RET_ERR -1
#define CONF_RET_WARN -2 #define CONF_RET_WARN -2
#define CONF_RET_NOENT -3 #define CONF_RET_NOENT -3
#define CONF_RET_BADCONF -4
struct config_item { struct config_item {
const char *item; const char *item;

16
src/include/hash.h
View File

@@ -219,14 +219,16 @@ static inline uint32_t hash32_ptr(const void *ptr)
return (uint32_t)val; return (uint32_t)val;
} }
static inline unsigned long static inline uint32_t hash_string(const char *s)
hash_string(const char *str)
{ {
unsigned long v = 0; uint32_t h = 0;
const char *c;
for (c = str; *c; ) while (*s) {
v = (((v << 1) + (v >> 14)) ^ (*c++)) & 0x3fff; h = h * 31 + *s;
return(v); s++;
}
return h;
} }
#endif /* _GENERIC_HASH_H */ #endif /* _GENERIC_HASH_H */

2
src/lib/art.c
View File

@@ -1016,7 +1016,7 @@ static void art_copy_key(art_leaf *leaf, unsigned char *key, int *key_len)
return; return;
} }
len = leaf->key_len > *key_len ? *key_len : leaf->key_len; len = (int)leaf->key_len > *key_len ? *key_len : (int)leaf->key_len;
memcpy(key, leaf->key, len); memcpy(key, leaf->key, len);
*key_len = len; *key_len = len;
} }

18
src/lib/conf.c
View File

@@ -129,7 +129,7 @@ int conf_size(const char *item, void *data, int argc, char *argv[])
return 0; return 0;
} }
void conf_getopt_reset(void) static void conf_getopt_reset(void)
{ {
static struct option long_options[] = {{"-", 0, 0, 0}, {0, 0, 0, 0}}; static struct option long_options[] = {{"-", 0, 0, 0}, {0, 0, 0, 0}};
int argc = 2; int argc = 2;
@@ -144,7 +144,7 @@ void conf_getopt_reset(void)
optopt = 0; optopt = 0;
} }
int conf_parse_args(char *key, char *value, int *argc, char **argv) static int conf_parse_args(char *key, char *value, int *argc, char **argv)
{ {
char *start = NULL; char *start = NULL;
char *ptr = value; char *ptr = value;
@@ -205,12 +205,9 @@ int conf_parse_args(char *key, char *value, int *argc, char **argv)
return 0; return 0;
} }
void load_exit(void) void load_exit(void) {}
{
return;
}
int load_conf_printf(const char *file, int lineno, int ret) static int load_conf_printf(const char *file, int lineno, int ret)
{ {
if (ret != CONF_RET_OK) { if (ret != CONF_RET_OK) {
printf("process config file '%s' failed at line %d.", file, lineno); printf("process config file '%s' failed at line %d.", file, lineno);
@@ -224,15 +221,15 @@ int load_conf_printf(const char *file, int lineno, int ret)
return 0; return 0;
} }
int load_conf_file(const char *file, struct config_item *items, conf_error_handler handler) static int load_conf_file(const char *file, struct config_item *items, conf_error_handler handler)
{ {
FILE *fp = NULL; FILE *fp = NULL;
char line[MAX_LINE_LEN]; char line[MAX_LINE_LEN];
char key[MAX_KEY_LEN]; char key[MAX_KEY_LEN];
char value[MAX_LINE_LEN]; char value[MAX_LINE_LEN];
int filed_num = 0; int filed_num = 0;
int i; int i = 0;
int argc; int argc = 0;
char *argv[1024]; char *argv[1024];
int ret = 0; int ret = 0;
int call_ret = 0; int call_ret = 0;
@@ -262,6 +259,7 @@ int load_conf_file(const char *file, struct config_item *items, conf_error_handl
/* if field format is not key = value, error */ /* if field format is not key = value, error */
if (filed_num != 2) { if (filed_num != 2) {
handler(file, line_no, CONF_RET_BADCONF);
goto errout; goto errout;
} }

4
src/lib/radix.c
View File

@@ -87,7 +87,7 @@ comp_with_mask(unsigned char *addr, unsigned char *dest, unsigned int mask)
{ {
if (memcmp(addr, dest, mask / 8) == 0) { if (memcmp(addr, dest, mask / 8) == 0) {
unsigned int n = mask / 8; unsigned int n = mask / 8;
unsigned int m = ((~0) << (8 - (mask % 8))); unsigned int m = ((unsigned int)(~0) << (8 - (mask % 8)));
if (mask % 8 == 0 || (addr[n] & m) == (dest[n] & m)) if (mask % 8 == 0 || (addr[n] & m) == (dest[n] & m))
return (1); return (1);
@@ -549,7 +549,7 @@ sanitise_mask(unsigned char *addr, unsigned int masklen, unsigned int maskbits)
unsigned int j = masklen % 8; unsigned int j = masklen % 8;
if (j != 0) { if (j != 0) {
addr[i] &= (~0) << (8 - j); addr[i] &= (unsigned int)(~0) << (8 - j);
i++; i++;
} }
for (; i < maskbits / 8; i++) for (; i < maskbits / 8; i++)

51
src/smartdns.c
View File

@@ -55,12 +55,12 @@ static int verbose_screen;
int capget(struct __user_cap_header_struct *header, struct __user_cap_data_struct *cap); int capget(struct __user_cap_header_struct *header, struct __user_cap_data_struct *cap);
int capset(struct __user_cap_header_struct *header, struct __user_cap_data_struct *cap); int capset(struct __user_cap_header_struct *header, struct __user_cap_data_struct *cap);
int get_uid_gid(int *uid, int *gid) static int get_uid_gid(int *uid, int *gid)
{ {
struct passwd *result = NULL; struct passwd *result = NULL;
struct passwd pwd; struct passwd pwd;
char *buf = NULL; char *buf = NULL;
size_t bufsize; ssize_t bufsize = 0;
int ret = -1; int ret = -1;
if (dns_conf_user[0] == '\0') { if (dns_conf_user[0] == '\0') {
@@ -79,7 +79,7 @@ int get_uid_gid(int *uid, int *gid)
ret = getpwnam_r(dns_conf_user, &pwd, buf, bufsize, &result); ret = getpwnam_r(dns_conf_user, &pwd, buf, bufsize, &result);
if (ret != 0) { if (ret != 0) {
return -1; goto out;
} }
*uid = result->pw_uid; *uid = result->pw_uid;
@@ -93,14 +93,15 @@ out:
return ret; return ret;
} }
int drop_root_privilege(void) static int drop_root_privilege(void)
{ {
struct __user_cap_data_struct cap; struct __user_cap_data_struct cap;
struct __user_cap_header_struct header; struct __user_cap_header_struct header;
header.version = _LINUX_CAPABILITY_VERSION; header.version = _LINUX_CAPABILITY_VERSION;
header.pid = 0; header.pid = 0;
int uid; int uid = 0;
int gid; int gid = 0;
int unused __attribute__((unused)) = 0;
if (get_uid_gid(&uid, &gid) != 0) { if (get_uid_gid(&uid, &gid) != 0) {
return -1; return -1;
@@ -113,8 +114,8 @@ int drop_root_privilege(void)
prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0); prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0);
cap.effective |= (1 << CAP_NET_RAW | 1 << CAP_NET_ADMIN); cap.effective |= (1 << CAP_NET_RAW | 1 << CAP_NET_ADMIN);
cap.permitted |= (1 << CAP_NET_RAW | 1 << CAP_NET_ADMIN); cap.permitted |= (1 << CAP_NET_RAW | 1 << CAP_NET_ADMIN);
setuid(uid); unused = setuid(uid);
setgid(gid); unused = setgid(gid);
if (capset(&header, &cap) < 0) { if (capset(&header, &cap) < 0) {
return -1; return -1;
} }
@@ -186,7 +187,7 @@ static int _smartdns_load_from_resolv(void)
continue; continue;
} }
if (strncmp(key, "nameserver", MAX_KEY_LEN) != 0) { if (strncmp(key, "nameserver", MAX_KEY_LEN - 1) != 0) {
continue; continue;
} }
@@ -212,14 +213,14 @@ static int _smartdns_load_from_resolv(void)
static int _smartdns_add_servers(void) static int _smartdns_add_servers(void)
{ {
int i = 0; unsigned long i = 0;
int j = 0; int j = 0;
int ret = 0; int ret = 0;
struct dns_server_groups *group = NULL; struct dns_server_groups *group = NULL;
struct dns_servers *server = NULL; struct dns_servers *server = NULL;
struct client_dns_server_flags flags; struct client_dns_server_flags flags;
for (i = 0; i < dns_conf_server_num; i++) { for (i = 0; i < (unsigned int)dns_conf_server_num; i++) {
memset(&flags, 0, sizeof(flags)); memset(&flags, 0, sizeof(flags));
switch (dns_conf_servers[i].type) { switch (dns_conf_servers[i].type) {
case DNS_SERVER_UDP: { case DNS_SERVER_UDP: {
@@ -324,7 +325,7 @@ static int _smartdns_destroy_ssl(void)
static int _smartdns_init(void) static int _smartdns_init(void)
{ {
int ret; int ret = 0;
char *logfile = SMARTDNS_LOG_FILE; char *logfile = SMARTDNS_LOG_FILE;
if (dns_conf_log_file[0] != 0) { if (dns_conf_log_file[0] != 0) {
@@ -396,10 +397,10 @@ static int _smartdns_run(void)
static void _smartdns_exit(void) static void _smartdns_exit(void)
{ {
tlog(TLOG_INFO, "smartdns starting exit..."); tlog(TLOG_INFO, "smartdns exit...");
dns_server_exit();
dns_client_exit(); dns_client_exit();
fast_ping_exit(); fast_ping_exit();
dns_server_exit();
_smartdns_destroy_ssl(); _smartdns_destroy_ssl();
tlog_exit(); tlog_exit();
dns_server_load_exit(); dns_server_load_exit();
@@ -407,7 +408,7 @@ static void _smartdns_exit(void)
static void _sig_exit(int signo) static void _sig_exit(int signo)
{ {
tlog(TLOG_INFO, "start stop smartdns"); tlog(TLOG_INFO, "stop smartdns by signal %d", signo);
dns_server_stop(); dns_server_stop();
} }
@@ -450,7 +451,8 @@ static int sig_num = sizeof(sig_list) / sizeof(int);
static void _reg_signal(void) static void _reg_signal(void)
{ {
struct sigaction act, old; struct sigaction act;
struct sigaction old;
int i = 0; int i = 0;
act.sa_sigaction = _sig_error_exit; act.sa_sigaction = _sig_error_exit;
sigemptyset(&act.sa_mask); sigemptyset(&act.sa_mask);
@@ -463,9 +465,9 @@ static void _reg_signal(void)
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
int ret; int ret = 0;
int is_forground = 0; int is_forground = 0;
int opt; int opt = 0;
char config_file[MAX_LINE_LEN]; char config_file[MAX_LINE_LEN];
char pid_file[MAX_LINE_LEN]; char pid_file[MAX_LINE_LEN];
int signal_ignore = 0; int signal_ignore = 0;
@@ -505,6 +507,11 @@ int main(int argc, char *argv[])
} }
} }
if (dns_server_load_conf(config_file) != 0) {
fprintf(stderr, "load config failed.\n");
goto errout;
}
if (is_forground == 0) { if (is_forground == 0) {
if (daemon(0, 0) < 0) { if (daemon(0, 0) < 0) {
fprintf(stderr, "run daemon process failed, %s\n", strerror(errno)); fprintf(stderr, "run daemon process failed, %s\n", strerror(errno));
@@ -521,10 +528,8 @@ int main(int argc, char *argv[])
} }
signal(SIGPIPE, SIG_IGN); signal(SIGPIPE, SIG_IGN);
if (dns_server_load_conf(config_file) != 0) { signal(SIGINT, _sig_exit);
fprintf(stderr, "load config failed.\n"); signal(SIGTERM, _sig_exit);
goto errout;
}
drop_root_privilege(); drop_root_privilege();
@@ -534,8 +539,6 @@ int main(int argc, char *argv[])
goto errout; goto errout;
} }
signal(SIGINT, _sig_exit);
signal(SIGTERM, _sig_exit);
atexit(_smartdns_exit); atexit(_smartdns_exit);
return _smartdns_run(); return _smartdns_run();

9
src/tlog.c
View File

@@ -80,7 +80,7 @@ struct tlog_log {
int multi_log; int multi_log;
int logscreen; int logscreen;
int segment_log; int segment_log;
unsigned int max_line_size; int max_line_size;
tlog_output_func output_func; tlog_output_func output_func;
void *private_data; void *private_data;
@@ -1091,7 +1091,7 @@ static int _tlog_archive_log(struct tlog_log *log)
} }
} }
void _tlog_get_log_name_dir(struct tlog_log *log) static void _tlog_get_log_name_dir(struct tlog_log *log)
{ {
char log_file[PATH_MAX]; char log_file[PATH_MAX];
if (log->fd > 0) { if (log->fd > 0) {
@@ -1842,10 +1842,11 @@ int tlog_init(const char *logfile, int maxlogsize, int maxlogcount, int buffsize
} }
return 0; return 0;
errout: errout:
if (tlog.tid > 0) { if (tlog.tid) {
void *retval = NULL; void *retval = NULL;
tlog.run = 0; tlog.run = 0;
pthread_join(tlog.tid, &retval); pthread_join(tlog.tid, &retval);
tlog.tid = 0;
} }
pthread_cond_destroy(&tlog.cond); pthread_cond_destroy(&tlog.cond);
@@ -1859,7 +1860,7 @@ errout:
void tlog_exit(void) void tlog_exit(void)
{ {
if (tlog.tid > 0) { if (tlog.tid) {
void *ret = NULL; void *ret = NULL;
tlog.run = 0; tlog.run = 0;
pthread_mutex_lock(&tlog.lock); pthread_mutex_lock(&tlog.lock);

1
src/tlog.h
View File

@@ -8,6 +8,7 @@
#define TLOG_H #define TLOG_H
#include <stdarg.h> #include <stdarg.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h>
#ifdef __cplusplus #ifdef __cplusplus
#include <functional> #include <functional>

133
src/util.c
View File

@@ -36,6 +36,7 @@
#include <pthread.h> #include <pthread.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <signal.h>
#include <sys/prctl.h> #include <sys/prctl.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/statvfs.h> #include <sys/statvfs.h>
@@ -77,7 +78,7 @@
#define NETLINK_ALIGN(len) (((len) + 3) & ~(3)) #define NETLINK_ALIGN(len) (((len) + 3) & ~(3))
#define BUFF_SZ 256 #define BUFF_SZ 1024
struct ipset_netlink_attr { struct ipset_netlink_attr {
unsigned short len; unsigned short len;
@@ -108,12 +109,12 @@ char *gethost_by_addr(char *host, int maxsize, struct sockaddr *addr)
host[0] = 0; host[0] = 0;
switch (addr_store->ss_family) { switch (addr_store->ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)addr; addr_in = (struct sockaddr_in *)addr;
inet_ntop(AF_INET, &addr_in->sin_addr, host, maxsize); inet_ntop(AF_INET, &addr_in->sin_addr, host, maxsize);
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)addr; addr_in6 = (struct sockaddr_in6 *)addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
struct sockaddr_in addr_in4; struct sockaddr_in addr_in4;
@@ -176,14 +177,14 @@ int getsocknet_inet(int fd, struct sockaddr *addr, socklen_t *addr_len)
switch (addr_store.ss_family) { switch (addr_store.ss_family) {
case AF_INET: { case AF_INET: {
struct sockaddr_in *addr_in; struct sockaddr_in *addr_in = NULL;
addr_in = (struct sockaddr_in *)addr; addr_in = (struct sockaddr_in *)addr;
addr_in->sin_family = AF_INET; addr_in->sin_family = AF_INET;
*addr_len = sizeof(struct sockaddr_in); *addr_len = sizeof(struct sockaddr_in);
memcpy(addr, addr_in, sizeof(struct sockaddr_in)); memcpy(addr, addr_in, sizeof(struct sockaddr_in));
} break; } break;
case AF_INET6: { case AF_INET6: {
struct sockaddr_in6 *addr_in6; struct sockaddr_in6 *addr_in6 = NULL;
addr_in6 = (struct sockaddr_in6 *)addr; addr_in6 = (struct sockaddr_in6 *)addr;
if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) { if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
struct sockaddr_in addr_in4; struct sockaddr_in addr_in4;
@@ -411,7 +412,7 @@ int parse_uri(char *value, char *scheme, char *host, int *port, char *path)
}; };
field_len = host_end - process_ptr; field_len = host_end - process_ptr;
if (field_len >= sizeof(host_name)) { if (field_len >= (int)sizeof(host_name)) {
return -1; return -1;
} }
memcpy(host_name, process_ptr, field_len); memcpy(host_name, process_ptr, field_len);
@@ -431,7 +432,7 @@ int parse_uri(char *value, char *scheme, char *host, int *port, char *path)
int set_fd_nonblock(int fd, int nonblock) int set_fd_nonblock(int fd, int nonblock)
{ {
int ret; int ret = 0;
int flags = fcntl(fd, F_GETFL); int flags = fcntl(fd, F_GETFL);
if (flags == -1) { if (flags == -1) {
@@ -523,7 +524,7 @@ static int _ipset_socket_init(void)
return 0; return 0;
} }
static int _ipset_support_timeout(const char *ipsetname) static int _ipset_support_timeout(void)
{ {
if (dns_conf_ipset_timeout_enable) { if (dns_conf_ipset_timeout_enable) {
return 0; return 0;
@@ -535,15 +536,15 @@ static int _ipset_support_timeout(const char *ipsetname)
static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int addr_len, unsigned long timeout, static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int addr_len, unsigned long timeout,
int operate) int operate)
{ {
struct nlmsghdr *netlink_head; struct nlmsghdr *netlink_head = NULL;
struct ipset_netlink_msg *netlink_msg; struct ipset_netlink_msg *netlink_msg = NULL;
struct ipset_netlink_attr *nested[3]; struct ipset_netlink_attr *nested[3];
char buffer[BUFF_SZ]; char buffer[BUFF_SZ];
uint8_t proto; uint8_t proto = 0;
ssize_t rc; ssize_t rc = 0;
int af = 0; int af = 0;
static const struct sockaddr_nl snl = {.nl_family = AF_NETLINK}; static const struct sockaddr_nl snl = {.nl_family = AF_NETLINK};
uint32_t expire; uint32_t expire = 0;
if (addr_len != IPV4_ADDR_LEN && addr_len != IPV6_ADDR_LEN) { if (addr_len != IPV4_ADDR_LEN && addr_len != IPV6_ADDR_LEN) {
errno = EINVAL; errno = EINVAL;
@@ -597,7 +598,7 @@ static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int
addr); addr);
nested[1]->len = (void *)buffer + NETLINK_ALIGN(netlink_head->nlmsg_len) - (void *)nested[1]; nested[1]->len = (void *)buffer + NETLINK_ALIGN(netlink_head->nlmsg_len) - (void *)nested[1];
if (timeout > 0 && _ipset_support_timeout(ipsetname) == 0) { if (timeout > 0 && _ipset_support_timeout() == 0) {
expire = htonl(timeout); expire = htonl(timeout);
_ipset_add_attr(netlink_head, IPSET_ATTR_TIMEOUT | NLA_F_NET_BYTEORDER, sizeof(expire), &expire); _ipset_add_attr(netlink_head, IPSET_ATTR_TIMEOUT | NLA_F_NET_BYTEORDER, sizeof(expire), &expire);
} }
@@ -636,8 +637,9 @@ unsigned char *SSL_SHA256(const unsigned char *d, size_t n, unsigned char *md)
{ {
static unsigned char m[SHA256_DIGEST_LENGTH]; static unsigned char m[SHA256_DIGEST_LENGTH];
if (md == NULL) if (md == NULL) {
md = m; md = m;
}
EVP_MD_CTX* ctx = EVP_MD_CTX_create(); EVP_MD_CTX* ctx = EVP_MD_CTX_create();
if (ctx == NULL) { if (ctx == NULL) {
@@ -656,7 +658,7 @@ unsigned char *SSL_SHA256(const unsigned char *d, size_t n, unsigned char *md)
int SSL_base64_decode(const char *in, unsigned char *out) int SSL_base64_decode(const char *in, unsigned char *out)
{ {
size_t inlen = strlen(in); size_t inlen = strlen(in);
int outlen; int outlen = 0;
if (inlen == 0) { if (inlen == 0) {
return 0; return 0;
@@ -679,8 +681,8 @@ errout:
int create_pid_file(const char *pid_file) int create_pid_file(const char *pid_file)
{ {
int fd; int fd = 0;
int flags; int flags = 0;
char buff[TMP_BUFF_LEN_32]; char buff[TMP_BUFF_LEN_32];
/* create pid file, and lock this file */ /* create pid file, and lock this file */
@@ -745,7 +747,7 @@ static __attribute__((unused)) void _pthreads_locking_callback(int mode, int typ
static __attribute__((unused)) unsigned long _pthreads_thread_id(void) static __attribute__((unused)) unsigned long _pthreads_thread_id(void)
{ {
unsigned long ret; unsigned long ret = 0;
ret = (unsigned long)pthread_self(); ret = (unsigned long)pthread_self();
return (ret); return (ret);
@@ -753,16 +755,18 @@ static __attribute__((unused)) unsigned long _pthreads_thread_id(void)
void SSL_CRYPTO_thread_setup(void) void SSL_CRYPTO_thread_setup(void)
{ {
int i; int i = 0;
lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t)); lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long)); lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
if (!lock_cs || !lock_count) { if (!lock_cs || !lock_count) {
/* Nothing we can do about this...void function! */ /* Nothing we can do about this...void function! */
if (lock_cs) if (lock_cs) {
OPENSSL_free(lock_cs); OPENSSL_free(lock_cs);
if (lock_count) }
if (lock_count) {
OPENSSL_free(lock_count); OPENSSL_free(lock_count);
}
return; return;
} }
for (i = 0; i < CRYPTO_num_locks(); i++) { for (i = 0; i < CRYPTO_num_locks(); i++) {
@@ -780,7 +784,7 @@ void SSL_CRYPTO_thread_setup(void)
void SSL_CRYPTO_thread_cleanup(void) void SSL_CRYPTO_thread_cleanup(void)
{ {
int i; int i = 0;
CRYPTO_set_locking_callback(NULL); CRYPTO_set_locking_callback(NULL);
for (i = 0; i < CRYPTO_num_locks(); i++) { for (i = 0; i < CRYPTO_num_locks(); i++) {
@@ -817,18 +821,20 @@ static int parse_server_name_extension(const char *, size_t, char *, const char
*/ */
int parse_tls_header(const char *data, size_t data_len, char *hostname, const char **hostname_ptr) int parse_tls_header(const char *data, size_t data_len, char *hostname, const char **hostname_ptr)
{ {
char tls_content_type; char tls_content_type = 0;
char tls_version_major; char tls_version_major = 0;
char tls_version_minor; char tls_version_minor = 0;
size_t pos = TLS_HEADER_LEN; size_t pos = TLS_HEADER_LEN;
size_t len; size_t len = 0;
if (hostname == NULL) if (hostname == NULL) {
return -3; return -3;
}
/* Check that our TCP payload is at least large enough for a TLS header */ /* Check that our TCP payload is at least large enough for a TLS header */
if (data_len < TLS_HEADER_LEN) if (data_len < TLS_HEADER_LEN) {
return -1; return -1;
}
/* SSL 2.0 compatible Client Hello /* SSL 2.0 compatible Client Hello
* *
@@ -856,8 +862,9 @@ int parse_tls_header(const char *data, size_t data_len, char *hostname, const ch
data_len = MIN(data_len, len); data_len = MIN(data_len, len);
/* Check we received entire TLS record length */ /* Check we received entire TLS record length */
if (data_len < len) if (data_len < len) {
return -1; return -1;
}
/* /*
* Handshake * Handshake
@@ -879,20 +886,23 @@ int parse_tls_header(const char *data, size_t data_len, char *hostname, const ch
pos += 38; pos += 38;
/* Session ID */ /* Session ID */
if (pos + 1 > data_len) if (pos + 1 > data_len) {
return -5; return -5;
}
len = (unsigned char)data[pos]; len = (unsigned char)data[pos];
pos += 1 + len; pos += 1 + len;
/* Cipher Suites */ /* Cipher Suites */
if (pos + 2 > data_len) if (pos + 2 > data_len) {
return -5; return -5;
}
len = ((unsigned char)data[pos] << 8) + (unsigned char)data[pos + 1]; len = ((unsigned char)data[pos] << 8) + (unsigned char)data[pos + 1];
pos += 2 + len; pos += 2 + len;
/* Compression Methods */ /* Compression Methods */
if (pos + 1 > data_len) if (pos + 1 > data_len) {
return -5; return -5;
}
len = (unsigned char)data[pos]; len = (unsigned char)data[pos];
pos += 1 + len; pos += 1 + len;
@@ -901,20 +911,22 @@ int parse_tls_header(const char *data, size_t data_len, char *hostname, const ch
} }
/* Extensions */ /* Extensions */
if (pos + 2 > data_len) if (pos + 2 > data_len) {
return -5; return -5;
}
len = ((unsigned char)data[pos] << 8) + (unsigned char)data[pos + 1]; len = ((unsigned char)data[pos] << 8) + (unsigned char)data[pos + 1];
pos += 2; pos += 2;
if (pos + len > data_len) if (pos + len > data_len) {
return -5; return -5;
}
return parse_extensions(data + pos, len, hostname, hostname_ptr); return parse_extensions(data + pos, len, hostname, hostname_ptr);
} }
static int parse_extensions(const char *data, size_t data_len, char *hostname, const char **hostname_ptr) static int parse_extensions(const char *data, size_t data_len, char *hostname, const char **hostname_ptr)
{ {
size_t pos = 0; size_t pos = 0;
size_t len; size_t len = 0;
/* Parse each 4 bytes for the extension header */ /* Parse each 4 bytes for the extension header */
while (pos + 4 <= data_len) { while (pos + 4 <= data_len) {
@@ -925,15 +937,17 @@ static int parse_extensions(const char *data, size_t data_len, char *hostname, c
if (data[pos] == 0x00 && data[pos + 1] == 0x00) { if (data[pos] == 0x00 && data[pos + 1] == 0x00) {
/* There can be only one extension of each type, so we break /* There can be only one extension of each type, so we break
* our state and move p to beinnging of the extension here */ * our state and move p to beinnging of the extension here */
if (pos + 4 + len > data_len) if (pos + 4 + len > data_len) {
return -5; return -5;
}
return parse_server_name_extension(data + pos + 4, len, hostname, hostname_ptr); return parse_server_name_extension(data + pos + 4, len, hostname, hostname_ptr);
} }
pos += 4 + len; /* Advance to the next extension header */ pos += 4 + len; /* Advance to the next extension header */
} }
/* Check we ended where we expected to */ /* Check we ended where we expected to */
if (pos != data_len) if (pos != data_len) {
return -5; return -5;
}
return -2; return -2;
} }
@@ -941,13 +955,14 @@ static int parse_extensions(const char *data, size_t data_len, char *hostname, c
static int parse_server_name_extension(const char *data, size_t data_len, char *hostname, const char **hostname_ptr) static int parse_server_name_extension(const char *data, size_t data_len, char *hostname, const char **hostname_ptr)
{ {
size_t pos = 2; /* skip server name list length */ size_t pos = 2; /* skip server name list length */
size_t len; size_t len = 0;
while (pos + 3 < data_len) { while (pos + 3 < data_len) {
len = ((unsigned char)data[pos + 1] << 8) + (unsigned char)data[pos + 2]; len = ((unsigned char)data[pos + 1] << 8) + (unsigned char)data[pos + 2];
if (pos + 3 + len > data_len) if (pos + 3 + len > data_len) {
return -5; return -5;
}
switch (data[pos]) { /* name type */ switch (data[pos]) { /* name type */
case 0x00: /* host_name */ case 0x00: /* host_name */
@@ -964,8 +979,9 @@ static int parse_server_name_extension(const char *data, size_t data_len, char *
pos += 3 + len; pos += 3 + len;
} }
/* Check we ended where we expected to */ /* Check we ended where we expected to */
if (pos != data_len) if (pos != data_len) {
return -5; return -5;
}
return -2; return -2;
} }
@@ -973,8 +989,12 @@ static int parse_server_name_extension(const char *data, size_t data_len, char *
void get_compiled_time(struct tm *tm) void get_compiled_time(struct tm *tm)
{ {
char s_month[5]; char s_month[5];
int month, day, year; int month = 0;
int hour, min, sec; int day = 0;
int year = 0;
int hour = 0;
int min = 0;
int sec = 0;
static const char *month_names = "JanFebMarAprMayJunJulAugSepOctNovDec"; static const char *month_names = "JanFebMarAprMayJunJulAugSepOctNovDec";
sscanf(__DATE__, "%4s %d %d", s_month, &day, &year); sscanf(__DATE__, "%4s %d %d", s_month, &day, &year);
@@ -992,8 +1012,9 @@ void get_compiled_time(struct tm *tm)
int is_numeric(const char *str) int is_numeric(const char *str)
{ {
while (*str != '\0') { while (*str != '\0') {
if (*str < '0' || *str > '9') if (*str < '0' || *str > '9') {
return -1; return -1;
}
str++; str++;
} }
return 0; return 0;
@@ -1082,9 +1103,9 @@ static _Unwind_Reason_Code unwind_callback(struct _Unwind_Context *context, void
if (pc) { if (pc) {
if (state->current == state->end) { if (state->current == state->end) {
return _URC_END_OF_STACK; return _URC_END_OF_STACK;
} else {
*state->current++ = (void *)(pc);
} }
*state->current++ = (void *)(pc);
} }
return _URC_NO_REASON; return _URC_NO_REASON;
} }
@@ -1114,10 +1135,28 @@ void print_stack(void)
} }
void *offset = (void *)((char *)(addr) - (char *)(info.dli_fbase)); void *offset = (void *)((char *)(addr) - (char *)(info.dli_fbase));
tlog(TLOG_FATAL, "#%.2d: %p %s from %s+%p", idx + 1, addr, symbol, info.dli_fname, offset); tlog(TLOG_FATAL, "#%.2d: %p %s() from %s+%p", idx + 1, addr, symbol, info.dli_fname, offset);
} }
} }
void bug_ext(const char *file, int line, const char *func, const char *errfmt, ...)
{
va_list ap;
va_start(ap, errfmt);
tlog_vext(TLOG_FATAL, file, line, func, NULL, errfmt, ap);
va_end(ap);
print_stack();
/* trigger BUG */
sleep(1);
raise(SIGSEGV);
while (true) {
sleep(1);
};
}
int write_file(const char *filename, void *data, int data_len) int write_file(const char *filename, void *data, int data_len)
{ {
int fd = open(filename, O_WRONLY|O_CREAT, 0644); int fd = open(filename, O_WRONLY|O_CREAT, 0644);

10
src/util.h
View File

@@ -45,6 +45,16 @@ extern "C" {
#define PORT_NOT_DEFINED -1 #define PORT_NOT_DEFINED -1
#define MAX_IP_LEN 64 #define MAX_IP_LEN 64
#ifndef BASE_FILE_NAME
#define BASE_FILE_NAME \
(__builtin_strrchr(__FILE__, '/') ? __builtin_strrchr(__FILE__, '/') + 1 \
: __FILE__)
#endif
#define BUG(format, ...) bug_ext(BASE_FILE_NAME, __LINE__, __func__, format, ##__VA_ARGS__)
void bug_ext(const char *file, int line, const char *func, const char *errfmt, ...)
__attribute__((format(printf, 4, 5))) __attribute__((nonnull(4)));
unsigned long get_tick_count(void); unsigned long get_tick_count(void);
char *gethost_by_addr(char *host, int maxsize, struct sockaddr *addr); char *gethost_by_addr(char *host, int maxsize, struct sockaddr *addr);