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 char *addr2string(struct sockaddr *addr, socklen_t len) {
76 struct sockaddr_in6 *sa6;
77 struct sockaddr_in sa4;
78 static char addr_buf[2][INET6_ADDRSTRLEN];
81 if (addr->sa_family == AF_INET6) {
82 sa6 = (struct sockaddr_in6 *)addr;
83 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
84 memset(&sa4, 0, sizeof(sa4));
85 sa4.sin_family = AF_INET;
86 sa4.sin_port = sa6->sin6_port;
87 memcpy(&sa4.sin_addr, &sa6->sin6_addr.s6_addr[12], 4);
88 addr = (struct sockaddr *)&sa4;
91 len = addr->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
93 if (getnameinfo(addr, len, addr_buf[i], sizeof(addr_buf[i]),
94 NULL, 0, NI_NUMERICHOST)) {
95 debug(DBG_WARN, "getnameinfo failed");
96 return "getnameinfo_failed";
101 int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
103 struct addrinfo *res;
105 for (res = addrinfo; res; res = res->ai_next) {
106 if (family != AF_UNSPEC && family != res->ai_family)
108 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
110 debug(DBG_WARN, "bindtoaddr: socket failed");
114 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
117 setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
120 if (!bind(s, res->ai_addr, res->ai_addrlen))
122 debug(DBG_WARN, "bindtoaddr: bind failed");
128 int connectport(int type, char *host, char *port) {
129 struct addrinfo hints, *res0, *res;
132 memset(&hints, 0, sizeof(hints));
133 hints.ai_socktype = type;
134 hints.ai_family = AF_UNSPEC;
136 if (getaddrinfo(host, port, &hints, &res0) != 0) {
137 debug(DBG_ERR, "connectport: can't resolve host %s port %s", host, port);
141 for (res = res0; res; res = res->ai_next) {
142 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
144 debug(DBG_WARN, "connectport: socket failed");
147 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
149 debug(DBG_WARN, "connectport: connect failed");