113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*************************************************************************
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*
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* Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
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*
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* smartdns is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* smartdns is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SMART_DNS_UTIL_H
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#define SMART_DNS_UTIL_H
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#include "stringutil.h"
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#include <netdb.h>
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#include <time.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /*__cplusplus */
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#ifndef TCP_FASTOPEN
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#define TCP_FASTOPEN 23
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#endif
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#ifndef TCP_FASTOPEN_CONNECT
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#define TCP_FASTOPEN_CONNECT 30
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#endif
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#ifndef TCP_THIN_LINEAR_TIMEOUTS
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#define TCP_THIN_LINEAR_TIMEOUTS 16
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#endif
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#ifndef TCP_THIN_DUPACK
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#define TCP_THIN_DUPACK 17
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#endif
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#define PORT_NOT_DEFINED -1
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#define MAX_IP_LEN 64
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unsigned long get_tick_count(void);
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char *gethost_by_addr(char *host, int maxsize, struct sockaddr *addr);
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int getaddr_by_host(char *host, struct sockaddr *addr, socklen_t *addr_len);
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int getsocknet_inet(int fd, struct sockaddr *addr, socklen_t *addr_len);
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int fill_sockaddr_by_ip(unsigned char *ip, int ip_len, int port, struct sockaddr *addr, socklen_t *addr_len);
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int parse_ip(const char *value, char *ip, int *port);
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int check_is_ipaddr(const char *ip);
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int parse_uri(char *value, char *scheme, char *host, int *port, char *path);
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int set_fd_nonblock(int fd, int nonblock);
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char *reverse_string(char *output, const char *input, int len, int to_lower_case);
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void print_stack(void);
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int ipset_add(const char *ipsetname, const unsigned char addr[], int addr_len, unsigned long timeout);
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int ipset_del(const char *ipsetname, const unsigned char addr[], int addr_len);
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void SSL_CRYPTO_thread_setup(void);
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void SSL_CRYPTO_thread_cleanup(void);
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unsigned char *SSL_SHA256(const unsigned char *d, size_t n, unsigned char *md);
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int SSL_base64_decode(const char *in, unsigned char *out);
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int create_pid_file(const char *pid_file);
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/* Parse a TLS packet for the Server Name Indication extension in the client
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* hello handshake, returning the first servername found (pointer to static
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* array)
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*
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* Returns:
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* >=0 - length of the hostname and updates *hostname
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* caller is responsible for freeing *hostname
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* -1 - Incomplete request
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* -2 - No Host header included in this request
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* -3 - Invalid hostname pointer
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* -4 - malloc failure
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* < -4 - Invalid TLS client hello
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*/
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int parse_tls_header(const char *data, size_t data_len, char *hostname, const char **hostname_ptr);
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void get_compiled_time(struct tm *tm);
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int is_numeric(const char *str);
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int has_network_raw_cap(void);
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int set_sock_keepalive(int fd, int keepidle, int keepinterval, int keepcnt);
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int set_sock_lingertime(int fd, int time);
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#ifdef __cplusplus
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}
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#endif /*__cplusplus */
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#endif
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