Mercurial > dovecot > core-2.2
annotate src/lib/network.c @ 1915:79790750c349 HEAD
importing new index code. mbox still broken.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Tue, 27 Apr 2004 23:25:52 +0300 |
| parents | 638944ab7753 |
| children | 24e382b88232 |
| rev | line source |
|---|---|
|
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1 /* Copyright (c) 1999-2003 Timo Sirainen */ |
| 0 | 2 |
| 3 #include "lib.h" | |
| 4 #include "network.h" | |
| 5 | |
| 6 #include <unistd.h> | |
| 7 #include <fcntl.h> | |
| 8 #include <ctype.h> | |
| 9 #include <sys/un.h> | |
| 10 #include <netinet/tcp.h> | |
| 11 | |
| 12 #define LISTEN_BACKLOG 8 | |
| 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 int 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 | |
| 35 if (ip1->family == AF_INET6) | |
| 36 return memcmp(&ip1->ip, &ip2->ip, sizeof(ip1->ip)) == 0; | |
| 37 #endif | |
| 38 | |
| 39 return memcmp(&ip1->ip, &ip2->ip, 4) == 0; | |
| 40 } | |
| 41 | |
| 42 | |
| 43 /* copy IP to sockaddr */ | |
|
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44 static inline void |
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45 sin_set_ip(union sockaddr_union *so, const struct ip_addr *ip) |
| 0 | 46 { |
| 47 if (ip == NULL) { | |
| 48 #ifdef HAVE_IPV6 | |
| 49 so->sin6.sin6_family = AF_INET6; | |
| 50 so->sin6.sin6_addr = in6addr_any; | |
| 51 #else | |
| 52 so->sin.sin_family = AF_INET; | |
| 53 so->sin.sin_addr.s_addr = INADDR_ANY; | |
| 54 #endif | |
| 55 return; | |
| 56 } | |
| 57 | |
| 58 so->sin.sin_family = ip->family; | |
| 59 #ifdef HAVE_IPV6 | |
| 60 if (ip->family == AF_INET6) | |
| 61 memcpy(&so->sin6.sin6_addr, &ip->ip, sizeof(ip->ip)); | |
| 62 else | |
| 63 #endif | |
| 64 memcpy(&so->sin.sin_addr, &ip->ip, 4); | |
| 65 } | |
| 66 | |
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67 static inline void |
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68 sin_get_ip(const union sockaddr_union *so, struct ip_addr *ip) |
| 0 | 69 { |
| 70 ip->family = so->sin.sin_family; | |
| 71 | |
| 72 #ifdef HAVE_IPV6 | |
| 73 if (ip->family == AF_INET6) | |
| 74 memcpy(&ip->ip, &so->sin6.sin6_addr, sizeof(ip->ip)); | |
| 75 else | |
| 76 #endif | |
| 77 memcpy(&ip->ip, &so->sin.sin_addr, 4); | |
| 78 } | |
| 79 | |
| 349 | 80 static inline void sin_set_port(union sockaddr_union *so, unsigned int port) |
| 0 | 81 { |
| 82 #ifdef HAVE_IPV6 | |
| 83 if (so->sin.sin_family == AF_INET6) | |
| 84 so->sin6.sin6_port = htons((unsigned short) port); | |
| 85 else | |
| 86 #endif | |
| 87 so->sin.sin_port = htons((unsigned short) port); | |
| 88 } | |
| 89 | |
| 349 | 90 static inline unsigned int sin_get_port(union sockaddr_union *so) |
| 0 | 91 { |
| 92 #ifdef HAVE_IPV6 | |
| 93 if (so->sin.sin_family == AF_INET6) | |
| 94 return ntohs(so->sin6.sin6_port); | |
| 95 #endif | |
| 96 return ntohs(so->sin.sin_port); | |
| 97 } | |
| 98 | |
| 99 static inline void close_save_errno(int fd) | |
| 100 { | |
| 101 int old_errno = errno; | |
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102 (void)close(fd); |
| 0 | 103 errno = old_errno; |
| 104 } | |
| 105 | |
| 106 /* Connect to socket with ip address */ | |
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107 int net_connect_ip(const struct ip_addr *ip, unsigned int port, |
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108 const struct ip_addr *my_ip) |
| 0 | 109 { |
| 110 union sockaddr_union so; | |
| 111 int fd, ret, opt = 1; | |
| 112 | |
| 113 if (my_ip != NULL && ip->family != my_ip->family) { | |
| 114 i_warning("net_connect_ip(): ip->family != my_ip->family"); | |
| 115 my_ip = NULL; | |
| 116 } | |
| 117 | |
| 118 /* create the socket */ | |
| 119 memset(&so, 0, sizeof(so)); | |
| 120 so.sin.sin_family = ip->family; | |
| 121 fd = socket(ip->family, SOCK_STREAM, 0); | |
| 122 | |
| 123 if (fd == -1) | |
| 124 return -1; | |
| 125 | |
| 126 /* set socket options */ | |
| 127 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 128 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
| 129 | |
| 130 /* set our own address */ | |
| 131 if (my_ip != NULL) { | |
| 132 sin_set_ip(&so, my_ip); | |
| 133 if (bind(fd, &so.sa, SIZEOF_SOCKADDR(so)) == -1) { | |
| 134 /* failed, set it back to INADDR_ANY */ | |
| 135 sin_set_ip(&so, NULL); | |
| 136 bind(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 /* connect */ | |
| 141 sin_set_ip(&so, ip); | |
| 142 sin_set_port(&so, port); | |
| 143 ret = connect(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
| 144 | |
| 145 #ifndef WIN32 | |
| 146 if (ret < 0 && errno != EINPROGRESS) | |
| 147 #else | |
| 148 if (ret < 0 && WSAGetLastError() != WSAEWOULDBLOCK) | |
| 149 #endif | |
| 150 { | |
| 151 close_save_errno(fd); | |
| 152 return -1; | |
| 153 } | |
| 154 | |
| 155 return fd; | |
| 156 } | |
| 157 | |
| 158 int net_connect_unix(const char *path) | |
| 159 { | |
| 160 struct sockaddr_un sa; | |
| 161 int fd, ret; | |
| 162 | |
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163 memset(&sa, 0, sizeof(sa)); |
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164 sa.sun_family = AF_UNIX; |
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165 if (strocpy(sa.sun_path, path, sizeof(sa.sun_path)) < 0) { |
| 0 | 166 /* too long path */ |
| 167 errno = EINVAL; | |
| 168 return -1; | |
| 169 } | |
| 170 | |
| 171 /* create the socket */ | |
| 172 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
| 173 if (fd == -1) | |
| 174 return -1; | |
| 175 | |
| 176 /* connect */ | |
| 177 ret = connect(fd, (struct sockaddr *) &sa, sizeof(sa)); | |
| 178 if (ret < 0 && errno != EINPROGRESS) { | |
| 179 close_save_errno(fd); | |
| 180 return -1; | |
| 181 } | |
| 182 | |
| 183 return fd; | |
| 184 } | |
| 185 | |
| 186 /* Disconnect socket */ | |
| 187 void net_disconnect(int fd) | |
| 188 { | |
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189 if (close(fd) < 0) |
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190 i_error("net_disconnect() failed: %m"); |
| 0 | 191 } |
| 192 | |
| 193 /* Set socket blocking/nonblocking */ | |
|
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194 void net_set_nonblock(int fd __attr_unused__, int nonblock __attr_unused__) |
| 0 | 195 { |
| 196 #ifdef HAVE_FCNTL | |
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197 int flags; |
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198 |
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199 flags = fcntl(fd, F_GETFL, 0); |
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200 if (flags == -1) |
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201 i_fatal("net_set_nonblock() failed: %m"); |
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202 |
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203 if (nonblock) |
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204 flags |= O_NONBLOCK; |
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205 else |
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206 flags &= ~O_NONBLOCK; |
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207 |
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208 if (fcntl(fd, F_SETFL, flags) < 0) |
| 628 | 209 i_fatal("net_set_nonblock() failed: %m"); |
| 0 | 210 #endif |
| 211 } | |
| 212 | |
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213 int net_set_cork(int fd __attr_unused__, int cork __attr_unused__) |
| 0 | 214 { |
| 215 #ifdef TCP_CORK | |
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216 return setsockopt(fd, SOL_TCP, TCP_CORK, &cork, sizeof(cork)); |
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217 #else |
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218 errno = ENOPROTOOPT; |
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219 return -1; |
| 0 | 220 #endif |
| 221 } | |
| 222 | |
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223 void net_get_ip_any4(struct ip_addr *ip) |
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224 { |
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225 struct in_addr *in_ip = (struct in_addr *) &ip->ip; |
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226 |
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227 ip->family = AF_INET; |
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228 in_ip->s_addr = INADDR_ANY; |
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229 } |
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230 |
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231 void net_get_ip_any6(struct ip_addr *ip) |
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232 { |
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233 #ifdef HAVE_IPV6 |
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234 ip->family = AF_INET6; |
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235 ip->ip = in6addr_any; |
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236 #else |
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237 memset(ip, 0, sizeof(struct ip_addr)); |
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238 #endif |
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239 } |
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240 |
| 0 | 241 /* Listen for connections on a socket. if `my_ip' is NULL, listen in any |
| 242 address. */ | |
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243 int net_listen(const struct ip_addr *my_ip, unsigned int *port) |
| 0 | 244 { |
| 245 union sockaddr_union so; | |
| 246 int ret, fd, opt = 1; | |
| 247 socklen_t len; | |
| 248 | |
| 249 i_assert(port != NULL); | |
| 250 | |
| 251 memset(&so, 0, sizeof(so)); | |
| 252 sin_set_port(&so, *port); | |
| 253 sin_set_ip(&so, my_ip); | |
| 254 | |
| 255 /* create the socket */ | |
| 256 fd = socket(so.sin.sin_family, SOCK_STREAM, 0); | |
| 257 #ifdef HAVE_IPV6 | |
| 258 if (fd == -1 && (errno == EINVAL || errno == EAFNOSUPPORT)) { | |
| 259 /* IPv6 is not supported by OS */ | |
| 260 so.sin.sin_family = AF_INET; | |
| 261 so.sin.sin_addr.s_addr = INADDR_ANY; | |
| 262 | |
| 263 fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 264 } | |
| 265 #endif | |
| 266 if (fd == -1) | |
| 267 return -1; | |
| 268 | |
| 269 /* set socket options */ | |
| 270 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 271 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
| 272 | |
| 273 /* specify the address/port we want to listen in */ | |
| 274 ret = bind(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
| 275 if (ret >= 0) { | |
| 276 /* get the actual port we started listen */ | |
| 277 len = SIZEOF_SOCKADDR(so); | |
| 278 ret = getsockname(fd, &so.sa, &len); | |
| 279 if (ret >= 0) { | |
| 280 *port = sin_get_port(&so); | |
| 281 | |
| 282 /* start listening */ | |
| 283 if (listen(fd, LISTEN_BACKLOG) >= 0) | |
| 284 return fd; | |
| 285 } | |
| 286 | |
| 287 } | |
| 288 | |
| 289 /* error */ | |
| 290 close_save_errno(fd); | |
| 291 return -1; | |
| 292 } | |
| 293 | |
| 294 int net_listen_unix(const char *path) | |
| 295 { | |
| 296 struct sockaddr_un sa; | |
| 297 int fd; | |
| 298 | |
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299 memset(&sa, 0, sizeof(sa)); |
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300 sa.sun_family = AF_UNIX; |
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301 if (strocpy(sa.sun_path, path, sizeof(sa.sun_path)) < 0) { |
| 0 | 302 /* too long path */ |
| 303 errno = EINVAL; | |
| 304 return -1; | |
| 305 } | |
| 306 | |
| 307 /* create the socket */ | |
| 308 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
| 309 if (fd == -1) | |
| 310 return -1; | |
| 311 | |
| 312 /* bind */ | |
| 313 if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) == 0) { | |
| 314 /* start listening */ | |
| 315 if (listen(fd, LISTEN_BACKLOG) == 0) | |
| 316 return fd; | |
| 317 } | |
| 318 | |
| 319 close_save_errno(fd); | |
| 320 return -1; | |
| 321 } | |
| 322 | |
| 323 /* Accept a connection on a socket */ | |
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324 int net_accept(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 325 { |
| 326 union sockaddr_union so; | |
| 327 int ret; | |
| 328 socklen_t addrlen; | |
| 329 | |
| 330 i_assert(fd >= 0); | |
| 331 | |
| 332 addrlen = sizeof(so); | |
| 333 ret = accept(fd, &so.sa, &addrlen); | |
| 334 | |
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335 if (ret < 0) { |
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336 if (errno == EBADF || errno == ENOTSOCK || |
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337 errno == EOPNOTSUPP || errno == EFAULT || errno == EINVAL) |
|
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338 return -2; |
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339 else |
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340 return -1; |
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341 } |
| 0 | 342 |
| 343 if (addr != NULL) sin_get_ip(&so, addr); | |
| 344 if (port != NULL) *port = sin_get_port(&so); | |
| 345 | |
| 346 return ret; | |
| 347 } | |
| 348 | |
| 349 /* Read data from socket, return number of bytes read, -1 = error */ | |
|
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350 ssize_t net_receive(int fd, void *buf, size_t len) |
| 0 | 351 { |
|
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352 ssize_t ret; |
| 0 | 353 |
| 354 i_assert(fd >= 0); | |
| 355 i_assert(buf != NULL); | |
|
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356 i_assert(len <= SSIZE_T_MAX); |
| 0 | 357 |
| 358 ret = recv(fd, buf, len, 0); | |
|
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359 if (ret == 0) { |
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360 /* disconnected */ |
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361 errno = 0; |
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362 return -2; |
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363 } |
| 0 | 364 |
|
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365 if (ret < 0) { |
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366 if (errno == EINTR || errno == EAGAIN) |
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367 return 0; |
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368 |
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369 if (errno == ECONNRESET || errno == ETIMEDOUT) { |
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370 /* treat as disconnection */ |
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371 return -2; |
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372 } |
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373 } |
| 0 | 374 |
| 375 return ret; | |
| 376 } | |
| 377 | |
| 378 /* Transmit data, return number of bytes sent, -1 = error */ | |
|
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379 ssize_t net_transmit(int fd, const void *data, size_t len) |
| 0 | 380 { |
|
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381 ssize_t ret; |
| 0 | 382 |
| 383 i_assert(fd >= 0); | |
| 384 i_assert(data != NULL); | |
|
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385 i_assert(len <= SSIZE_T_MAX); |
| 0 | 386 |
|
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387 ret = send(fd, data, len, 0); |
|
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388 if (ret == -1 && (errno == EINTR || errno == EAGAIN)) |
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389 return 0; |
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390 |
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391 if (errno == EPIPE) |
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392 return -2; |
| 0 | 393 |
| 394 return ret; | |
| 395 } | |
| 396 | |
| 397 /* Get IP addresses for host. ips contains ips_count of IPs, they don't need | |
| 398 to be free'd. Returns 0 = ok, others = error code for net_gethosterror() */ | |
|
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399 int net_gethostbyname(const char *addr, struct ip_addr **ips, int *ips_count) |
| 0 | 400 { |
|
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401 /* @UNSAFE */ |
| 0 | 402 #ifdef HAVE_IPV6 |
| 403 union sockaddr_union *so; | |
| 404 struct addrinfo hints, *ai, *origai; | |
| 405 char hbuf[NI_MAXHOST]; | |
| 406 int host_error; | |
| 407 #else | |
| 408 struct hostent *hp; | |
| 409 #endif | |
| 410 int count; | |
| 411 | |
| 412 i_assert(addr != NULL); | |
| 413 i_assert(ips != NULL); | |
| 414 i_assert(ips_count != NULL); | |
| 415 | |
| 416 *ips = NULL; | |
| 417 *ips_count = 0; | |
| 418 | |
| 419 #ifdef HAVE_IPV6 | |
| 420 memset(&hints, 0, sizeof(struct addrinfo)); | |
| 421 hints.ai_socktype = SOCK_STREAM; | |
| 422 | |
| 423 /* save error to host_error for later use */ | |
| 424 host_error = getaddrinfo(addr, NULL, &hints, &ai); | |
| 425 if (host_error != 0) | |
| 426 return host_error; | |
| 427 | |
| 428 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, | |
| 429 sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) | |
| 430 return 1; | |
| 431 | |
| 432 | |
| 433 /* get number of IPs */ | |
| 434 origai = ai; | |
| 435 for (count = 0; ai != NULL; ai = ai->ai_next) | |
| 436 count++; | |
| 437 | |
| 438 *ips_count = count; | |
|
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439 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 440 |
| 441 count = 0; | |
| 442 for (ai = origai; ai != NULL; ai = ai->ai_next, count++) { | |
| 443 so = (union sockaddr_union *) ai->ai_addr; | |
| 444 | |
| 445 sin_get_ip(so, ips[count]); | |
| 446 } | |
| 447 freeaddrinfo(origai); | |
| 448 #else | |
| 449 hp = gethostbyname(addr); | |
| 450 if (hp == NULL) | |
| 451 return h_errno; | |
| 452 | |
| 453 /* get number of IPs */ | |
| 454 count = 0; | |
| 455 while (hp->h_addr_list[count] != NULL) | |
| 456 count++; | |
| 457 | |
| 458 *ips_count = count; | |
|
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459 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 460 |
| 461 while (count > 0) { | |
| 462 count--; | |
| 463 | |
| 464 (*ips)[count].family = AF_INET; | |
| 465 memcpy(&(*ips)[count].ip, hp->h_addr_list[count], 4); | |
| 466 } | |
| 467 #endif | |
| 468 | |
| 469 return 0; | |
| 470 } | |
| 471 | |
| 472 /* Get socket address/port */ | |
|
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473 int net_getsockname(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 474 { |
| 475 union sockaddr_union so; | |
| 476 socklen_t addrlen; | |
| 477 | |
| 478 i_assert(fd >= 0); | |
| 479 | |
| 480 addrlen = sizeof(so); | |
| 481 if (getsockname(fd, (struct sockaddr *) &so, &addrlen) == -1) | |
| 482 return -1; | |
| 483 | |
| 484 if (addr != NULL) sin_get_ip(&so, addr); | |
| 485 if (port != NULL) *port = sin_get_port(&so); | |
| 486 | |
| 487 return 0; | |
| 488 } | |
| 489 | |
|
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490 const char *net_ip2addr(const struct ip_addr *ip) |
| 0 | 491 { |
| 492 #ifdef HAVE_IPV6 | |
|
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493 char addr[MAX_IP_LEN+1]; |
|
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494 |
|
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495 addr[MAX_IP_LEN] = '\0'; |
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496 if (inet_ntop(ip->family, &ip->ip, addr, MAX_IP_LEN) == NULL) |
|
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497 return NULL; |
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498 |
|
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499 return t_strdup(addr); |
| 0 | 500 #else |
| 501 unsigned long ip4; | |
| 502 | |
|
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503 if (ip->family != AF_INET) |
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504 return NULL; |
| 0 | 505 |
| 506 ip4 = ntohl(ip->ip.s_addr); | |
|
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507 return t_strdup_printf("%lu.%lu.%lu.%lu", |
|
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508 (ip4 & 0xff000000UL) >> 24, |
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509 (ip4 & 0x00ff0000) >> 16, |
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510 (ip4 & 0x0000ff00) >> 8, |
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511 (ip4 & 0x000000ff)); |
| 0 | 512 #endif |
| 513 } | |
| 514 | |
|
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515 int net_addr2ip(const char *addr, struct ip_addr *ip) |
| 0 | 516 { |
|
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517 if (strchr(addr, ':') != NULL) { |
| 0 | 518 /* IPv6 */ |
| 519 ip->family = AF_INET6; | |
| 520 #ifdef HAVE_IPV6 | |
|
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521 if (inet_pton(AF_INET6, addr, &ip->ip) == 0) |
| 0 | 522 return -1; |
| 523 #else | |
| 524 ip->ip.s_addr = 0; | |
| 525 #endif | |
| 526 } else { | |
| 527 /* IPv4 */ | |
| 528 ip->family = AF_INET; | |
|
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529 if (inet_aton(addr, (struct in_addr *) &ip->ip) == 0) |
| 0 | 530 return -1; |
| 531 } | |
| 532 | |
| 533 return 0; | |
| 534 } | |
| 535 | |
| 536 /* Get socket error */ | |
| 537 int net_geterror(int fd) | |
| 538 { | |
| 539 int data; | |
| 540 socklen_t len = sizeof(data); | |
| 541 | |
| 542 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &data, &len) == -1) | |
| 543 return -1; | |
| 544 | |
| 545 return data; | |
| 546 } | |
| 547 | |
| 548 /* get error of net_gethostname() */ | |
| 549 const char *net_gethosterror(int error) | |
| 550 { | |
| 551 #ifdef HAVE_IPV6 | |
| 552 i_assert(error != 0); | |
| 553 | |
| 554 if (error == 1) { | |
| 555 /* getnameinfo() failed */ | |
| 556 return strerror(errno); | |
| 557 } | |
| 558 | |
| 559 return gai_strerror(error); | |
| 560 #else | |
| 561 switch (error) { | |
| 562 case HOST_NOT_FOUND: | |
| 563 return "Host not found"; | |
| 564 case NO_ADDRESS: | |
| 565 return "No IP address found for name"; | |
| 566 case NO_RECOVERY: | |
| 567 return "A non-recovable name server error occurred"; | |
| 568 case TRY_AGAIN: | |
| 569 return "A temporary error on an authoritative name server"; | |
| 570 } | |
| 571 | |
| 572 /* unknown error */ | |
| 573 return NULL; | |
| 574 #endif | |
| 575 } | |
| 576 | |
| 577 /* return TRUE if host lookup failed because it didn't exist (ie. not | |
| 578 some error with name server) */ | |
| 579 int net_hosterror_notfound(int error) | |
| 580 { | |
| 581 #ifdef HAVE_IPV6 | |
|
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582 #ifdef EAI_NODATA /* NODATA is depricated */ |
| 0 | 583 return error != 1 && (error == EAI_NONAME || error == EAI_NODATA); |
| 584 #else | |
|
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585 return error != 1 && (error == EAI_NONAME); |
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586 #endif |
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587 #else |
| 0 | 588 return error == HOST_NOT_FOUND || error == NO_ADDRESS; |
| 589 #endif | |
| 590 } | |
| 591 | |
| 592 /* Get name of TCP service */ | |
| 349 | 593 char *net_getservbyport(unsigned short port) |
| 0 | 594 { |
| 595 struct servent *entry; | |
| 596 | |
| 349 | 597 entry = getservbyport(htons(port), "tcp"); |
| 0 | 598 return entry == NULL ? NULL : entry->s_name; |
| 599 } | |
| 600 | |
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601 int is_ipv4_address(const char *addr) |
| 0 | 602 { |
|
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603 while (*addr != '\0') { |
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604 if (*addr != '.' && !i_isdigit(*addr)) |
| 0 | 605 return 0; |
|
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606 addr++; |
| 0 | 607 } |
| 608 | |
| 609 return 1; | |
| 610 } | |
| 611 | |
|
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612 int is_ipv6_address(const char *addr) |
| 0 | 613 { |
|
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614 while (*addr != '\0') { |
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615 if (*addr != ':' && !i_isxdigit(*addr)) |
| 0 | 616 return 0; |
|
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617 addr++; |
| 0 | 618 } |
| 619 | |
| 620 return 1; | |
| 621 } |