Mercurial > dovecot > core-2.2
annotate src/lib/network.c @ 7086:7ed926ed7aa4 HEAD
Updated copyright notices to include year 2008.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Tue, 01 Jan 2008 22:05:21 +0200 |
| parents | ed6693fc06d6 |
| children | da971cec0395 |
| rev | line source |
|---|---|
|
7086
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Updated copyright notices to include year 2008.
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1 /* Copyright (c) 1999-2008 Dovecot authors, see the included COPYING file */ |
| 0 | 2 |
| 3 #include "lib.h" | |
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4 #include "close-keep-errno.h" |
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5 #include "fd-set-nonblock.h" |
| 0 | 6 #include "network.h" |
| 7 | |
| 8 #include <unistd.h> | |
| 9 #include <fcntl.h> | |
| 10 #include <ctype.h> | |
| 11 #include <sys/un.h> | |
| 12 #include <netinet/tcp.h> | |
| 13 | |
| 14 union sockaddr_union { | |
| 15 struct sockaddr sa; | |
| 16 struct sockaddr_in sin; | |
| 17 #ifdef HAVE_IPV6 | |
| 18 struct sockaddr_in6 sin6; | |
| 19 #endif | |
| 20 }; | |
| 21 | |
| 22 #ifdef HAVE_IPV6 | |
| 23 # define SIZEOF_SOCKADDR(so) ((so).sa.sa_family == AF_INET6 ? \ | |
| 24 sizeof(so.sin6) : sizeof(so.sin)) | |
| 25 #else | |
| 26 # define SIZEOF_SOCKADDR(so) (sizeof(so.sin)) | |
| 27 #endif | |
| 28 | |
|
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29 bool net_ip_compare(const struct ip_addr *ip1, const struct ip_addr *ip2) |
| 0 | 30 { |
| 31 if (ip1->family != ip2->family) | |
| 32 return 0; | |
| 33 | |
| 34 #ifdef HAVE_IPV6 | |
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35 if (ip1->family == AF_INET6) { |
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36 return memcmp(&ip1->u.ip6, &ip2->u.ip6, |
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37 sizeof(ip1->u.ip6)) == 0; |
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38 } |
| 0 | 39 #endif |
| 40 | |
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41 return memcmp(&ip1->u.ip4, &ip2->u.ip4, sizeof(ip1->u.ip4)) == 0; |
| 0 | 42 } |
| 43 | |
| 5865 | 44 unsigned int net_ip_hash(const struct ip_addr *ip) |
| 45 { | |
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46 const unsigned char *p; |
| 5865 | 47 unsigned int len, g, h = 0; |
| 48 | |
| 49 #ifdef HAVE_IPV6 | |
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50 if (ip->family == AF_INET6) { |
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51 p = ip->u.ip6.s6_addr; |
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52 len = sizeof(ip->u.ip6); |
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53 } else |
| 5865 | 54 #endif |
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55 { |
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56 return ip->u.ip4.s_addr; |
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57 } |
| 5865 | 58 |
| 59 for (; len > 0; len--, p++) { | |
| 60 h = (h << 4) + *p; | |
| 61 if ((g = h & 0xf0000000UL)) { | |
| 62 h = h ^ (g >> 24); | |
| 63 h = h ^ g; | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 return h; | |
| 68 } | |
| 0 | 69 |
| 70 /* copy IP to sockaddr */ | |
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71 static inline void |
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72 sin_set_ip(union sockaddr_union *so, const struct ip_addr *ip) |
| 0 | 73 { |
| 74 if (ip == NULL) { | |
| 75 #ifdef HAVE_IPV6 | |
| 76 so->sin6.sin6_family = AF_INET6; | |
| 77 so->sin6.sin6_addr = in6addr_any; | |
| 78 #else | |
| 79 so->sin.sin_family = AF_INET; | |
| 80 so->sin.sin_addr.s_addr = INADDR_ANY; | |
| 81 #endif | |
| 82 return; | |
| 83 } | |
| 84 | |
| 85 so->sin.sin_family = ip->family; | |
| 86 #ifdef HAVE_IPV6 | |
| 87 if (ip->family == AF_INET6) | |
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88 memcpy(&so->sin6.sin6_addr, &ip->u.ip6, sizeof(ip->u.ip6)); |
| 0 | 89 else |
| 90 #endif | |
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91 memcpy(&so->sin.sin_addr, &ip->u.ip4, sizeof(ip->u.ip4)); |
| 0 | 92 } |
| 93 | |
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94 static inline void |
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95 sin_get_ip(const union sockaddr_union *so, struct ip_addr *ip) |
| 0 | 96 { |
| 97 ip->family = so->sin.sin_family; | |
| 98 | |
| 99 #ifdef HAVE_IPV6 | |
| 100 if (ip->family == AF_INET6) | |
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101 memcpy(&ip->u.ip6, &so->sin6.sin6_addr, sizeof(ip->u.ip6)); |
| 0 | 102 else |
| 103 #endif | |
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104 if (ip->family == AF_INET) |
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105 memcpy(&ip->u.ip4, &so->sin.sin_addr, sizeof(ip->u.ip4)); |
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106 else |
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107 memset(&ip->u, 0, sizeof(ip->u)); |
| 0 | 108 } |
| 109 | |
| 349 | 110 static inline void sin_set_port(union sockaddr_union *so, unsigned int port) |
| 0 | 111 { |
| 112 #ifdef HAVE_IPV6 | |
| 113 if (so->sin.sin_family == AF_INET6) | |
| 114 so->sin6.sin6_port = htons((unsigned short) port); | |
| 115 else | |
| 116 #endif | |
| 117 so->sin.sin_port = htons((unsigned short) port); | |
| 118 } | |
| 119 | |
| 349 | 120 static inline unsigned int sin_get_port(union sockaddr_union *so) |
| 0 | 121 { |
| 122 #ifdef HAVE_IPV6 | |
| 123 if (so->sin.sin_family == AF_INET6) | |
| 124 return ntohs(so->sin6.sin6_port); | |
| 125 #endif | |
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126 if (so->sin.sin_family == AF_INET) |
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127 return ntohs(so->sin.sin_port); |
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128 |
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129 return 0; |
| 0 | 130 } |
| 131 | |
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132 #ifdef __FreeBSD__ |
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133 static int net_connect_ip_freebsd(const struct ip_addr *ip, unsigned int port, |
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134 const struct ip_addr *my_ip); |
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135 |
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136 int net_connect_ip(const struct ip_addr *ip, unsigned int port, |
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137 const struct ip_addr *my_ip) |
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138 { |
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139 int fd, try; |
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140 |
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141 for (try = 0;;) { |
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142 fd = net_connect_ip_freebsd(ip, port, my_ip); |
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143 if (fd != -1 || ++try == 5 || |
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144 (errno != EADDRINUSE && errno != EACCES)) |
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145 break; |
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146 /* |
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147 This may be just a temporary problem: |
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148 |
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149 EADDRINUSE: busy |
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150 EACCES: pf may cause this if another connection used |
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151 the same port recently |
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152 */ |
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153 } |
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154 return fd; |
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155 } |
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156 /* then some kludging: */ |
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157 #define net_connect_ip net_connect_ip_freebsd |
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158 static |
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159 #endif |
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160 |
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161 int net_connect_ip(const struct ip_addr *ip, unsigned int port, |
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162 const struct ip_addr *my_ip) |
| 0 | 163 { |
| 164 union sockaddr_union so; | |
| 165 int fd, ret, opt = 1; | |
| 166 | |
| 167 if (my_ip != NULL && ip->family != my_ip->family) { | |
| 168 i_warning("net_connect_ip(): ip->family != my_ip->family"); | |
| 169 my_ip = NULL; | |
| 170 } | |
| 171 | |
| 172 /* create the socket */ | |
| 173 memset(&so, 0, sizeof(so)); | |
| 174 so.sin.sin_family = ip->family; | |
| 175 fd = socket(ip->family, SOCK_STREAM, 0); | |
| 176 | |
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177 if (fd == -1) { |
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178 i_error("socket() failed: %m"); |
| 0 | 179 return -1; |
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180 } |
| 0 | 181 |
| 182 /* set socket options */ | |
| 183 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 184 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
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185 net_set_nonblock(fd, TRUE); |
| 0 | 186 |
| 187 /* set our own address */ | |
| 188 if (my_ip != NULL) { | |
| 189 sin_set_ip(&so, my_ip); | |
| 190 if (bind(fd, &so.sa, SIZEOF_SOCKADDR(so)) == -1) { | |
| 191 /* failed, set it back to INADDR_ANY */ | |
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192 i_error("bind(%s) failed: %m", net_ip2addr(my_ip)); |
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193 close_keep_errno(fd); |
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194 return -1; |
| 0 | 195 } |
| 196 } | |
| 197 | |
| 198 /* connect */ | |
| 199 sin_set_ip(&so, ip); | |
| 200 sin_set_port(&so, port); | |
| 201 ret = connect(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
| 202 | |
| 203 #ifndef WIN32 | |
| 204 if (ret < 0 && errno != EINPROGRESS) | |
| 205 #else | |
| 206 if (ret < 0 && WSAGetLastError() != WSAEWOULDBLOCK) | |
| 207 #endif | |
| 208 { | |
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209 close_keep_errno(fd); |
| 0 | 210 return -1; |
| 211 } | |
| 212 | |
| 213 return fd; | |
| 214 } | |
| 215 | |
| 216 int net_connect_unix(const char *path) | |
| 217 { | |
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218 union { |
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219 struct sockaddr sa; |
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220 struct sockaddr_un un; |
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221 } sa; |
| 0 | 222 int fd, ret; |
| 223 | |
|
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224 memset(&sa, 0, sizeof(sa)); |
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225 sa.un.sun_family = AF_UNIX; |
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226 if (i_strocpy(sa.un.sun_path, path, sizeof(sa.un.sun_path)) < 0) { |
| 0 | 227 /* too long path */ |
| 228 errno = EINVAL; | |
| 229 return -1; | |
| 230 } | |
| 231 | |
| 232 /* create the socket */ | |
| 233 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
|
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234 if (fd == -1) { |
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235 i_error("socket(%s) failed: %m", path); |
| 0 | 236 return -1; |
|
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237 } |
| 0 | 238 |
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239 net_set_nonblock(fd, TRUE); |
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240 |
| 0 | 241 /* connect */ |
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242 ret = connect(fd, &sa.sa, sizeof(sa)); |
| 0 | 243 if (ret < 0 && errno != EINPROGRESS) { |
|
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244 close_keep_errno(fd); |
| 0 | 245 return -1; |
| 246 } | |
| 247 | |
| 248 return fd; | |
| 249 } | |
| 250 | |
| 251 void net_disconnect(int fd) | |
| 252 { | |
|
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253 if (close(fd) < 0) |
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254 i_error("net_disconnect() failed: %m"); |
| 0 | 255 } |
| 256 | |
|
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257 void net_set_nonblock(int fd, bool nonblock) |
| 0 | 258 { |
|
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259 if (fd_set_nonblock(fd, nonblock) < 0) |
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260 i_fatal("fd_set_nonblock(%d) failed: %m", fd); |
| 0 | 261 } |
| 262 | |
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263 int net_set_cork(int fd ATTR_UNUSED, bool cork ATTR_UNUSED) |
| 0 | 264 { |
| 265 #ifdef TCP_CORK | |
|
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266 int val = cork; |
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267 |
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268 return setsockopt(fd, IPPROTO_TCP, TCP_CORK, &val, sizeof(val)); |
|
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269 #else |
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270 errno = ENOPROTOOPT; |
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271 return -1; |
| 0 | 272 #endif |
| 273 } | |
| 274 | |
|
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275 void net_get_ip_any4(struct ip_addr *ip) |
|
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276 { |
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277 ip->family = AF_INET; |
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278 ip->u.ip4.s_addr = INADDR_ANY; |
|
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279 } |
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280 |
|
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281 void net_get_ip_any6(struct ip_addr *ip) |
|
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282 { |
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283 #ifdef HAVE_IPV6 |
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284 ip->family = AF_INET6; |
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285 ip->u.ip6 = in6addr_any; |
|
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286 #else |
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287 memset(ip, 0, sizeof(struct ip_addr)); |
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288 #endif |
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289 } |
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290 |
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291 int net_listen(const struct ip_addr *my_ip, unsigned int *port, int backlog) |
| 0 | 292 { |
| 293 union sockaddr_union so; | |
| 294 int ret, fd, opt = 1; | |
| 295 socklen_t len; | |
| 296 | |
| 297 memset(&so, 0, sizeof(so)); | |
| 298 sin_set_port(&so, *port); | |
| 299 sin_set_ip(&so, my_ip); | |
| 300 | |
| 301 /* create the socket */ | |
| 302 fd = socket(so.sin.sin_family, SOCK_STREAM, 0); | |
| 303 #ifdef HAVE_IPV6 | |
| 304 if (fd == -1 && (errno == EINVAL || errno == EAFNOSUPPORT)) { | |
| 305 /* IPv6 is not supported by OS */ | |
| 306 so.sin.sin_family = AF_INET; | |
| 307 so.sin.sin_addr.s_addr = INADDR_ANY; | |
| 308 | |
| 309 fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 310 } | |
| 311 #endif | |
|
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312 if (fd == -1) { |
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313 i_error("socket() failed: %m"); |
| 0 | 314 return -1; |
|
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315 } |
| 0 | 316 |
| 317 /* set socket options */ | |
| 318 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 319 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
| 320 | |
|
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321 /* if using IPv6, bind both on the IPv4 and IPv6 addresses */ |
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322 #ifdef IPV6_V6ONLY |
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323 if (so.sin.sin_family == AF_INET6) { |
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324 opt = 0; |
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325 setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &opt, sizeof(opt)); |
|
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326 } |
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327 #endif |
| 0 | 328 /* specify the address/port we want to listen in */ |
| 329 ret = bind(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
|
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330 if (ret < 0) { |
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331 if (errno != EADDRINUSE) { |
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332 i_error("bind(%s, %u) failed: %m", |
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333 net_ip2addr(my_ip), *port); |
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334 } |
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335 } else { |
| 0 | 336 /* get the actual port we started listen */ |
| 337 len = SIZEOF_SOCKADDR(so); | |
| 338 ret = getsockname(fd, &so.sa, &len); | |
| 339 if (ret >= 0) { | |
| 340 *port = sin_get_port(&so); | |
| 341 | |
| 342 /* start listening */ | |
|
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343 if (listen(fd, backlog) >= 0) |
|
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344 return fd; |
|
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345 |
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346 if (errno != EADDRINUSE) |
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347 i_error("listen() failed: %m"); |
| 0 | 348 } |
| 349 } | |
| 350 | |
| 351 /* error */ | |
|
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Moved dupliated close_save_errno() code to public close_keep_errno() function.
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352 close_keep_errno(fd); |
| 0 | 353 return -1; |
| 354 } | |
| 355 | |
|
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356 int net_listen_unix(const char *path, int backlog) |
| 0 | 357 { |
|
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358 union { |
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359 struct sockaddr sa; |
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360 struct sockaddr_un un; |
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361 } sa; |
| 0 | 362 int fd; |
| 363 | |
|
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364 memset(&sa, 0, sizeof(sa)); |
|
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365 sa.un.sun_family = AF_UNIX; |
|
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Renamed strocpy() to i_strocpy().
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366 if (i_strocpy(sa.un.sun_path, path, sizeof(sa.un.sun_path)) < 0) { |
| 0 | 367 /* too long path */ |
| 368 errno = EINVAL; | |
| 369 return -1; | |
| 370 } | |
| 371 | |
| 372 /* create the socket */ | |
| 373 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
|
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374 if (fd == -1) { |
|
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375 i_error("socket() failed: %m"); |
| 0 | 376 return -1; |
|
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377 } |
| 0 | 378 |
| 379 /* bind */ | |
|
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380 if (bind(fd, &sa.sa, sizeof(sa)) < 0) { |
|
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381 if (errno != EADDRINUSE) |
|
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382 i_error("bind(%s) failed: %m", path); |
|
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383 } else { |
| 0 | 384 /* start listening */ |
|
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385 if (listen(fd, backlog) == 0) |
| 0 | 386 return fd; |
|
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387 |
|
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388 if (errno != EADDRINUSE) |
|
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389 i_error("listen() failed: %m"); |
| 0 | 390 } |
| 391 | |
|
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Moved dupliated close_save_errno() code to public close_keep_errno() function.
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392 close_keep_errno(fd); |
| 0 | 393 return -1; |
| 394 } | |
| 395 | |
|
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Naming style changes, finally got tired of most of the typedefs. Also the
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|
396 int net_accept(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 397 { |
| 398 union sockaddr_union so; | |
| 399 int ret; | |
| 400 socklen_t addrlen; | |
| 401 | |
| 402 i_assert(fd >= 0); | |
| 403 | |
| 404 addrlen = sizeof(so); | |
| 405 ret = accept(fd, &so.sa, &addrlen); | |
| 406 | |
|
680
84e398270f7f
net_accept() returns now -2 for fatal failures.
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|
407 if (ret < 0) { |
|
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408 if (errno == EAGAIN || errno == ECONNABORTED) |
|
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409 return -1; |
|
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410 else |
|
680
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411 return -2; |
|
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|
412 } |
| 0 | 413 |
| 414 if (addr != NULL) sin_get_ip(&so, addr); | |
| 415 if (port != NULL) *port = sin_get_port(&so); | |
| 416 | |
| 417 return ret; | |
| 418 } | |
| 419 | |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
Timo Sirainen <tss@iki.fi>
parents:
159
diff
changeset
|
420 ssize_t net_receive(int fd, void *buf, size_t len) |
| 0 | 421 { |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
Timo Sirainen <tss@iki.fi>
parents:
159
diff
changeset
|
422 ssize_t ret; |
| 0 | 423 |
| 424 i_assert(fd >= 0); | |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
Timo Sirainen <tss@iki.fi>
parents:
159
diff
changeset
|
425 i_assert(len <= SSIZE_T_MAX); |
| 0 | 426 |
|
3681
771cd6776d4b
Use read() instead of recv() in net_receive(), so it works even with
Timo Sirainen <tss@iki.fi>
parents:
3621
diff
changeset
|
427 ret = read(fd, buf, len); |
|
781
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
428 if (ret == 0) { |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
429 /* disconnected */ |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
430 errno = 0; |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
431 return -2; |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
432 } |
| 0 | 433 |
|
6825
85385079b044
Use likely() and unlikely() macros to make commonly checked error handling
Timo Sirainen <tss@iki.fi>
parents:
6666
diff
changeset
|
434 if (unlikely(ret < 0)) { |
|
781
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
435 if (errno == EINTR || errno == EAGAIN) |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
436 return 0; |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
437 |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
438 if (errno == ECONNRESET || errno == ETIMEDOUT) { |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
439 /* treat as disconnection */ |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
440 return -2; |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
441 } |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
442 } |
| 0 | 443 |
| 444 return ret; | |
| 445 } | |
| 446 | |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
Timo Sirainen <tss@iki.fi>
parents:
159
diff
changeset
|
447 ssize_t net_transmit(int fd, const void *data, size_t len) |
| 0 | 448 { |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
Timo Sirainen <tss@iki.fi>
parents:
159
diff
changeset
|
449 ssize_t ret; |
| 0 | 450 |
| 451 i_assert(fd >= 0); | |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
Timo Sirainen <tss@iki.fi>
parents:
159
diff
changeset
|
452 i_assert(len <= SSIZE_T_MAX); |
| 0 | 453 |
|
64
83ae914a583a
added t_strdup_noconst() which can be used instead of (char *) t_strdup().
Timo Sirainen <tss@iki.fi>
parents:
34
diff
changeset
|
454 ret = send(fd, data, len, 0); |
|
6825
85385079b044
Use likely() and unlikely() macros to make commonly checked error handling
Timo Sirainen <tss@iki.fi>
parents:
6666
diff
changeset
|
455 if (unlikely(ret == -1 && (errno == EINTR || errno == EAGAIN))) |
|
781
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
456 return 0; |
|
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
457 |
|
6825
85385079b044
Use likely() and unlikely() macros to make commonly checked error handling
Timo Sirainen <tss@iki.fi>
parents:
6666
diff
changeset
|
458 if (unlikely(errno == EPIPE)) |
|
781
9cb7022749e7
net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
Timo Sirainen <tss@iki.fi>
parents:
780
diff
changeset
|
459 return -2; |
| 0 | 460 |
| 461 return ret; | |
| 462 } | |
| 463 | |
|
4745
7ee0bb1b2d97
Changed ips_count to unsigned int in net_gethostbyname(). Also removed
Timo Sirainen <tss@iki.fi>
parents:
4699
diff
changeset
|
464 int net_gethostbyname(const char *addr, struct ip_addr **ips, |
|
7ee0bb1b2d97
Changed ips_count to unsigned int in net_gethostbyname(). Also removed
Timo Sirainen <tss@iki.fi>
parents:
4699
diff
changeset
|
465 unsigned int *ips_count) |
| 0 | 466 { |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
467 /* @UNSAFE */ |
| 0 | 468 #ifdef HAVE_IPV6 |
| 469 union sockaddr_union *so; | |
| 470 struct addrinfo hints, *ai, *origai; | |
| 471 int host_error; | |
| 472 #else | |
| 473 struct hostent *hp; | |
| 474 #endif | |
| 475 int count; | |
| 476 | |
| 477 *ips = NULL; | |
| 478 *ips_count = 0; | |
| 479 | |
| 480 #ifdef HAVE_IPV6 | |
| 481 memset(&hints, 0, sizeof(struct addrinfo)); | |
| 482 hints.ai_socktype = SOCK_STREAM; | |
| 483 | |
| 484 /* save error to host_error for later use */ | |
| 485 host_error = getaddrinfo(addr, NULL, &hints, &ai); | |
| 486 if (host_error != 0) | |
| 487 return host_error; | |
| 488 | |
| 489 /* get number of IPs */ | |
| 490 origai = ai; | |
| 491 for (count = 0; ai != NULL; ai = ai->ai_next) | |
| 492 count++; | |
| 493 | |
| 494 *ips_count = count; | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
|
495 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 496 |
| 497 count = 0; | |
| 498 for (ai = origai; ai != NULL; ai = ai->ai_next, count++) { | |
| 499 so = (union sockaddr_union *) ai->ai_addr; | |
| 500 | |
|
2113
c5817f302aa6
net_gethostbyname() was broken with IPv6 enabled (wasn't really used with
Timo Sirainen <tss@iki.fi>
parents:
2098
diff
changeset
|
501 sin_get_ip(so, &(*ips)[count]); |
| 0 | 502 } |
| 503 freeaddrinfo(origai); | |
| 504 #else | |
| 505 hp = gethostbyname(addr); | |
| 506 if (hp == NULL) | |
| 507 return h_errno; | |
| 508 | |
| 509 /* get number of IPs */ | |
| 510 count = 0; | |
| 511 while (hp->h_addr_list[count] != NULL) | |
| 512 count++; | |
| 513 | |
| 514 *ips_count = count; | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
|
515 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 516 |
| 517 while (count > 0) { | |
| 518 count--; | |
| 519 | |
| 520 (*ips)[count].family = AF_INET; | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
521 memcpy(&(*ips)[count].u.ip4, hp->h_addr_list[count], |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
522 sizeof((*ips)[count].u.ip4)); |
| 0 | 523 } |
| 524 #endif | |
| 525 | |
| 526 return 0; | |
| 527 } | |
| 528 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
|
529 int net_getsockname(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 530 { |
| 531 union sockaddr_union so; | |
| 532 socklen_t addrlen; | |
| 533 | |
| 534 i_assert(fd >= 0); | |
| 535 | |
| 536 addrlen = sizeof(so); | |
|
4018
989dd95aa8b9
Enable -Wstrict-aliasing=2 warning and fixed a couple of warnings it gave.
Timo Sirainen <tss@iki.fi>
parents:
4011
diff
changeset
|
537 if (getsockname(fd, &so.sa, &addrlen) == -1) |
| 0 | 538 return -1; |
| 539 | |
| 540 if (addr != NULL) sin_get_ip(&so, addr); | |
| 541 if (port != NULL) *port = sin_get_port(&so); | |
| 542 | |
| 543 return 0; | |
| 544 } | |
| 545 | |
| 2098 | 546 int net_getpeername(int fd, struct ip_addr *addr, unsigned int *port) |
| 547 { | |
| 548 union sockaddr_union so; | |
| 549 socklen_t addrlen; | |
| 550 | |
| 551 i_assert(fd >= 0); | |
| 552 | |
| 553 addrlen = sizeof(so); | |
|
4018
989dd95aa8b9
Enable -Wstrict-aliasing=2 warning and fixed a couple of warnings it gave.
Timo Sirainen <tss@iki.fi>
parents:
4011
diff
changeset
|
554 if (getpeername(fd, &so.sa, &addrlen) == -1) |
| 2098 | 555 return -1; |
| 556 | |
| 557 if (addr != NULL) sin_get_ip(&so, addr); | |
| 558 if (port != NULL) *port = sin_get_port(&so); | |
| 559 | |
| 560 return 0; | |
| 561 } | |
| 562 | |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
563 const char *net_ip2addr(const struct ip_addr *ip) |
| 0 | 564 { |
| 565 #ifdef HAVE_IPV6 | |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
566 char addr[MAX_IP_LEN+1]; |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
567 |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
568 addr[MAX_IP_LEN] = '\0'; |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
569 if (inet_ntop(ip->family, &ip->u.ip6, addr, MAX_IP_LEN) == NULL) |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
570 return NULL; |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
571 |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
572 return t_strdup(addr); |
| 0 | 573 #else |
| 574 unsigned long ip4; | |
| 575 | |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
576 if (ip->family != AF_INET) |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
577 return NULL; |
| 0 | 578 |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
579 ip4 = ntohl(ip->u.ip4.s_addr); |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
580 return t_strdup_printf("%lu.%lu.%lu.%lu", |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
581 (ip4 & 0xff000000UL) >> 24, |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
582 (ip4 & 0x00ff0000) >> 16, |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
583 (ip4 & 0x0000ff00) >> 8, |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
584 (ip4 & 0x000000ff)); |
| 0 | 585 #endif |
| 586 } | |
| 587 | |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
588 int net_addr2ip(const char *addr, struct ip_addr *ip) |
| 0 | 589 { |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
590 if (strchr(addr, ':') != NULL) { |
| 0 | 591 /* IPv6 */ |
| 592 ip->family = AF_INET6; | |
| 593 #ifdef HAVE_IPV6 | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
594 if (inet_pton(AF_INET6, addr, &ip->u.ip6) == 0) |
| 0 | 595 return -1; |
| 596 #else | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
597 ip->u.ip4.s_addr = 0; |
| 0 | 598 #endif |
| 599 } else { | |
| 600 /* IPv4 */ | |
| 601 ip->family = AF_INET; | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
602 if (inet_aton(addr, &ip->u.ip4) == 0) |
| 0 | 603 return -1; |
| 604 } | |
| 605 | |
| 606 return 0; | |
| 607 } | |
| 608 | |
|
4684
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
609 int net_ipv6_mapped_ipv4_convert(const struct ip_addr *src, |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
610 struct ip_addr *dest) |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
611 { |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
612 #ifdef HAVE_IPV6 |
|
4699
9e4cc68b71b2
Fix net_ipv6_mapped_ipv4_convert() to be actually portable.
Timo Sirainen <tss@iki.fi>
parents:
4684
diff
changeset
|
613 static uint8_t v4_prefix[] = |
|
9e4cc68b71b2
Fix net_ipv6_mapped_ipv4_convert() to be actually portable.
Timo Sirainen <tss@iki.fi>
parents:
4684
diff
changeset
|
614 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff }; |
|
9e4cc68b71b2
Fix net_ipv6_mapped_ipv4_convert() to be actually portable.
Timo Sirainen <tss@iki.fi>
parents:
4684
diff
changeset
|
615 |
|
4684
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
616 if (!IPADDR_IS_V6(src)) |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
617 return -1; |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
618 if (memcmp(src->u.ip6.s6_addr, v4_prefix, sizeof(v4_prefix)) != 0) |
|
4684
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
619 return -1; |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
620 |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
621 dest->family = AF_INET; |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
Timo Sirainen <tss@iki.fi>
parents:
5865
diff
changeset
|
622 memcpy(&dest->u.ip6, &src->u.ip6.s6_addr[3*4], 4); |
|
4684
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
623 return 0; |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
624 #else |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
625 return -1; |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
626 #endif |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
627 } |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
628 |
| 0 | 629 int net_geterror(int fd) |
| 630 { | |
| 631 int data; | |
| 632 socklen_t len = sizeof(data); | |
| 633 | |
| 634 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &data, &len) == -1) | |
| 635 return -1; | |
| 636 | |
| 637 return data; | |
| 638 } | |
| 639 | |
| 640 const char *net_gethosterror(int error) | |
| 641 { | |
| 642 #ifdef HAVE_IPV6 | |
| 643 i_assert(error != 0); | |
| 644 | |
| 645 return gai_strerror(error); | |
| 646 #else | |
| 647 switch (error) { | |
| 648 case HOST_NOT_FOUND: | |
| 649 return "Host not found"; | |
| 650 case NO_ADDRESS: | |
| 651 return "No IP address found for name"; | |
| 652 case NO_RECOVERY: | |
| 6666 | 653 return "A non-recoverable name server error occurred"; |
| 0 | 654 case TRY_AGAIN: |
| 655 return "A temporary error on an authoritative name server"; | |
| 656 } | |
| 657 | |
| 658 /* unknown error */ | |
| 659 return NULL; | |
| 660 #endif | |
| 661 } | |
| 662 | |
| 663 int net_hosterror_notfound(int error) | |
| 664 { | |
| 665 #ifdef HAVE_IPV6 | |
|
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666 #ifdef EAI_NODATA /* NODATA is depricated */ |
| 0 | 667 return error != 1 && (error == EAI_NONAME || error == EAI_NODATA); |
| 668 #else | |
|
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669 return error != 1 && (error == EAI_NONAME); |
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670 #endif |
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671 #else |
| 0 | 672 return error == HOST_NOT_FOUND || error == NO_ADDRESS; |
| 673 #endif | |
| 674 } | |
| 675 | |
|
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676 const char *net_getservbyport(unsigned short port) |
| 0 | 677 { |
| 678 struct servent *entry; | |
| 679 | |
| 349 | 680 entry = getservbyport(htons(port), "tcp"); |
| 0 | 681 return entry == NULL ? NULL : entry->s_name; |
| 682 } | |
| 683 | |
|
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684 bool is_ipv4_address(const char *addr) |
| 0 | 685 { |
|
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686 while (*addr != '\0') { |
|
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687 if (*addr != '.' && !i_isdigit(*addr)) |
|
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688 return FALSE; |
|
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689 addr++; |
| 0 | 690 } |
| 691 | |
|
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692 return TRUE; |
| 0 | 693 } |
| 694 | |
|
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695 bool is_ipv6_address(const char *addr) |
| 0 | 696 { |
|
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697 while (*addr != '\0') { |
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698 if (*addr != ':' && !i_isxdigit(*addr)) |
|
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699 return FALSE; |
|
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700 addr++; |
| 0 | 701 } |
| 702 | |
|
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703 return TRUE; |
| 0 | 704 } |