daxi20/smartdns
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dns: fix crash issue

Browse Source
This commit is contained in:
Nick Peng
2023-04-22 19:06:44 +08:00
parent e38d5eaecc
commit 56d0332bf9
3 changed files with 108 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/util.c
View File

@@ -1601,10 +1601,11 @@ static int _dns_debug_display(struct dns_packet *packet)
char target[DNS_MAX_CNAME_LEN] = {0};
struct dns_https_param *p = NULL;
int priority = 0;
int ret = 0;
p = dns_get_HTTPS_svcparm_start(rrs, name, DNS_MAX_CNAME_LEN, &ttl, &priority, target,
ret = dns_get_HTTPS_svcparm_start(rrs, &p, name, DNS_MAX_CNAME_LEN, &ttl, &priority, target,
DNS_MAX_CNAME_LEN);
if (p == NULL) {
if (ret != 0) {
printf("get HTTPS svcparm failed\n");
break;
}
@@ -1617,7 +1618,23 @@ static int _dns_debug_display(struct dns_packet *packet)
printf(" HTTPS: mandatory: %s\n", p->value);
} break;
case DNS_HTTPS_T_ALPN: {
printf(" HTTPS: alpn: %s\n", p->value);
char alph[64] = {0};
int total_alph_len = 0;
char *ptr = (char *)p->value;
do {
int alphlen = *ptr;
memcpy(alph + total_alph_len, ptr + 1, alphlen);
total_alph_len += alphlen;
ptr += alphlen + 1;
alph[total_alph_len] = ',';
total_alph_len++;
alph[total_alph_len] = ' ';
total_alph_len++;
} while (ptr - (char *)p->value < p->len);
if (total_alph_len > 2) {
alph[total_alph_len - 2] = '\0';
}
printf(" HTTPS: alpn: %s\n", alph);
} break;
case DNS_HTTPS_T_NO_DEFAULT_ALPN: {
printf(" HTTPS: no_default_alpn: %s\n", p->value);