2 * Copyright (C) 2006-2008 Stig Venaas <venaas@uninett.no>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
9 #include <sys/socket.h>
10 #include <netinet/in.h>
21 void errx(char *format, ...) {
26 vfprintf(stderr, format, ap);
29 fprintf(stderr, ": ");
31 fprintf(stderr, "errno=%d\n", errno);
33 fprintf(stderr, "\n");
37 void err(char *format, ...) {
42 vfprintf(stderr, format, ap);
45 fprintf(stderr, ": ");
47 fprintf(stderr, "errno=%d\n", errno);
49 fprintf(stderr, "\n");
53 char *stringcopy(const char *s, int len) {
59 debug(DBG_ERR, "stringcopy: malloc failed");
65 void printfchars(char *prefixfmt, char *prefix, char *charfmt, char *chars, int len) {
67 unsigned char *s = (unsigned char *)chars;
69 printf(prefixfmt ? prefixfmt : "%s: ", prefix);
70 for (i = 0; i < len; i++)
71 printf(charfmt ? charfmt : "%c", s[i]);
75 int addr_equal(struct sockaddr *a, struct sockaddr *b) {
76 switch (a->sa_family) {
78 return !memcmp(&((struct sockaddr_in*)a)->sin_addr,
79 &((struct sockaddr_in*)b)->sin_addr,
80 sizeof(struct in_addr));
82 return IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6*)a)->sin6_addr,
83 &((struct sockaddr_in6*)b)->sin6_addr);
90 struct sockaddr *addr_copy(struct sockaddr *in) {
91 struct sockaddr *out = NULL;
93 switch (in->sa_family) {
95 out = malloc(sizeof(struct sockaddr_in));
97 memset(out, 0, sizeof(struct sockaddr_in));
98 ((struct sockaddr_in *)out)->sin_addr = ((struct sockaddr_in *)in)->sin_addr;
102 out = malloc(sizeof(struct sockaddr_in6));
104 memset(out, 0, sizeof(struct sockaddr_in6));
105 ((struct sockaddr_in6 *)out)->sin6_addr = ((struct sockaddr_in6 *)in)->sin6_addr;
112 char *addr2string(struct sockaddr *addr, socklen_t len) {
113 struct sockaddr_in6 *sa6;
114 struct sockaddr_in sa4;
115 static char addr_buf[2][INET6_ADDRSTRLEN];
118 if (addr->sa_family == AF_INET6) {
119 sa6 = (struct sockaddr_in6 *)addr;
120 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
121 memset(&sa4, 0, sizeof(sa4));
122 sa4.sin_family = AF_INET;
123 sa4.sin_port = sa6->sin6_port;
124 memcpy(&sa4.sin_addr, &sa6->sin6_addr.s6_addr[12], 4);
125 addr = (struct sockaddr *)&sa4;
128 len = addr->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
130 if (getnameinfo(addr, len, addr_buf[i], sizeof(addr_buf[i]),
131 NULL, 0, NI_NUMERICHOST)) {
132 debug(DBG_WARN, "getnameinfo failed");
133 return "getnameinfo_failed";
138 int connectport(int type, char *host, char *port) {
139 struct addrinfo hints, *res0, *res;
142 memset(&hints, 0, sizeof(hints));
143 hints.ai_socktype = type;
144 hints.ai_family = AF_UNSPEC;
146 if (getaddrinfo(host, port, &hints, &res0) != 0) {
147 debug(DBG_ERR, "connectport: can't resolve host %s port %s", host, port);
151 for (res = res0; res; res = res->ai_next) {
152 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
154 debug(DBG_WARN, "connectport: socket failed");
157 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
159 debug(DBG_WARN, "connectport: connect failed");