Mercurial > dovecot > core-2.2
annotate src/lib/network.c @ 4011:323c09be5f00 HEAD
Moved dupliated close_save_errno() code to public close_keep_errno() function.
| author | Timo Sirainen <timo.sirainen@movial.fi> |
|---|---|
| date | Tue, 14 Feb 2006 15:41:58 +0200 |
| parents | 55df57c028d4 |
| children | 989dd95aa8b9 |
| rev | line source |
|---|---|
|
3621
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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parents:
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changeset
|
1 /* Copyright (c) 1999-2005 Timo Sirainen */ |
| 0 | 2 |
| 3 #include "lib.h" | |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
Timo Sirainen <timo.sirainen@movial.fi>
parents:
3863
diff
changeset
|
4 #include "close-keep-errno.h" |
|
3621
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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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 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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3681
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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 | |
| 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 */ | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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44 static inline void |
|
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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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 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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807
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67 static inline void |
|
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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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 | |
|
3400
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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77 if (ip->family == AF_INET) |
| 0 | 78 memcpy(&ip->ip, &so->sin.sin_addr, 4); |
|
3400
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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79 else |
|
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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80 memset(&ip->ip, 0, sizeof(ip->ip)); |
| 0 | 81 } |
| 82 | |
| 349 | 83 static inline void sin_set_port(union sockaddr_union *so, unsigned int port) |
| 0 | 84 { |
| 85 #ifdef HAVE_IPV6 | |
| 86 if (so->sin.sin_family == AF_INET6) | |
| 87 so->sin6.sin6_port = htons((unsigned short) port); | |
| 88 else | |
| 89 #endif | |
| 90 so->sin.sin_port = htons((unsigned short) port); | |
| 91 } | |
| 92 | |
| 349 | 93 static inline unsigned int sin_get_port(union sockaddr_union *so) |
| 0 | 94 { |
| 95 #ifdef HAVE_IPV6 | |
| 96 if (so->sin.sin_family == AF_INET6) | |
| 97 return ntohs(so->sin6.sin6_port); | |
| 98 #endif | |
|
3400
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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99 if (so->sin.sin_family == AF_INET) |
|
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Don't return random data if net_getpeername() or net_getsockname() is used
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100 return ntohs(so->sin.sin_port); |
|
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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parents:
3373
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101 |
|
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Don't return random data if net_getpeername() or net_getsockname() is used
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102 return 0; |
| 0 | 103 } |
| 104 | |
| 105 /* Connect to socket with ip address */ | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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parents:
807
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changeset
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106 int net_connect_ip(const struct ip_addr *ip, unsigned int port, |
|
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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parents:
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diff
changeset
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107 const struct ip_addr *my_ip) |
| 0 | 108 { |
| 109 union sockaddr_union so; | |
| 110 int fd, ret, opt = 1; | |
| 111 | |
| 112 if (my_ip != NULL && ip->family != my_ip->family) { | |
| 113 i_warning("net_connect_ip(): ip->family != my_ip->family"); | |
| 114 my_ip = NULL; | |
| 115 } | |
| 116 | |
| 117 /* create the socket */ | |
| 118 memset(&so, 0, sizeof(so)); | |
| 119 so.sin.sin_family = ip->family; | |
| 120 fd = socket(ip->family, SOCK_STREAM, 0); | |
| 121 | |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
Timo Sirainen <tss@iki.fi>
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3400
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122 if (fd == -1) { |
|
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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123 i_error("socket() failed: %m"); |
| 0 | 124 return -1; |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
Timo Sirainen <tss@iki.fi>
parents:
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125 } |
| 0 | 126 |
| 127 /* set socket options */ | |
| 128 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 129 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
|
2639
a307ddd22a3a
net_connect() should be nonblocking (currently unused in Dovecot)
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2113
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130 net_set_nonblock(fd, TRUE); |
| 0 | 131 |
| 132 /* set our own address */ | |
| 133 if (my_ip != NULL) { | |
| 134 sin_set_ip(&so, my_ip); | |
| 135 if (bind(fd, &so.sa, SIZEOF_SOCKADDR(so)) == -1) { | |
| 136 /* failed, set it back to INADDR_ANY */ | |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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137 i_error("bind(%s) failed: %m", net_ip2addr(my_ip)); |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
Timo Sirainen <timo.sirainen@movial.fi>
parents:
3863
diff
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138 close_keep_errno(fd); |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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139 return -1; |
| 0 | 140 } |
| 141 } | |
| 142 | |
| 143 /* connect */ | |
| 144 sin_set_ip(&so, ip); | |
| 145 sin_set_port(&so, port); | |
| 146 ret = connect(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
| 147 | |
| 148 #ifndef WIN32 | |
| 149 if (ret < 0 && errno != EINPROGRESS) | |
| 150 #else | |
| 151 if (ret < 0 && WSAGetLastError() != WSAEWOULDBLOCK) | |
| 152 #endif | |
| 153 { | |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
Timo Sirainen <timo.sirainen@movial.fi>
parents:
3863
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|
154 close_keep_errno(fd); |
| 0 | 155 return -1; |
| 156 } | |
| 157 | |
| 158 return fd; | |
| 159 } | |
| 160 | |
| 161 int net_connect_unix(const char *path) | |
| 162 { | |
| 163 struct sockaddr_un sa; | |
| 164 int fd, ret; | |
| 165 | |
|
807
35abd7a5d381
Buffer related cleanups. Use PATH_MAX instead of hardcoded 1024 for paths.
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805
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166 memset(&sa, 0, sizeof(sa)); |
|
35abd7a5d381
Buffer related cleanups. Use PATH_MAX instead of hardcoded 1024 for paths.
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805
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167 sa.sun_family = AF_UNIX; |
|
35abd7a5d381
Buffer related cleanups. Use PATH_MAX instead of hardcoded 1024 for paths.
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168 if (strocpy(sa.sun_path, path, sizeof(sa.sun_path)) < 0) { |
| 0 | 169 /* too long path */ |
| 170 errno = EINVAL; | |
| 171 return -1; | |
| 172 } | |
| 173 | |
| 174 /* create the socket */ | |
| 175 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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176 if (fd == -1) { |
|
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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177 i_error("socket(%s) failed: %m", path); |
| 0 | 178 return -1; |
|
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d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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179 } |
| 0 | 180 |
|
3076
8d15fea729c2
Use nonblocking connecting for unix sockets.
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181 net_set_nonblock(fd, TRUE); |
|
8d15fea729c2
Use nonblocking connecting for unix sockets.
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182 |
| 0 | 183 /* connect */ |
| 184 ret = connect(fd, (struct sockaddr *) &sa, sizeof(sa)); | |
| 185 if (ret < 0 && errno != EINPROGRESS) { | |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
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186 close_keep_errno(fd); |
| 0 | 187 return -1; |
| 188 } | |
| 189 | |
| 190 return fd; | |
| 191 } | |
| 192 | |
| 193 /* Disconnect socket */ | |
| 194 void net_disconnect(int fd) | |
| 195 { | |
|
388
792fc5b3daa4
Send error message if close() fails in net_disconnect().
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196 if (close(fd) < 0) |
|
792fc5b3daa4
Send error message if close() fails in net_disconnect().
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197 i_error("net_disconnect() failed: %m"); |
| 0 | 198 } |
| 199 | |
| 200 /* Set socket blocking/nonblocking */ | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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201 void net_set_nonblock(int fd, bool nonblock) |
| 0 | 202 { |
|
3621
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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203 if (fd_set_nonblock(fd, nonblock) < 0) |
|
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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204 i_fatal("fd_set_nonblock(%d) failed: %m", fd); |
| 0 | 205 } |
| 206 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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207 int net_set_cork(int fd __attr_unused__, bool cork __attr_unused__) |
| 0 | 208 { |
| 209 #ifdef TCP_CORK | |
|
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Added "bool" type and changed all ints that were used as booleans to bool.
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210 int val = cork; |
|
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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211 |
|
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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212 return setsockopt(fd, IPPROTO_TCP, TCP_CORK, &val, sizeof(val)); |
|
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1f0e7229ee58
Split IOBuffer into mmaped IBuffer, file IBuffer, memory data IBuffer and
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213 #else |
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Split IOBuffer into mmaped IBuffer, file IBuffer, memory data IBuffer and
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214 errno = ENOPROTOOPT; |
|
1f0e7229ee58
Split IOBuffer into mmaped IBuffer, file IBuffer, memory data IBuffer and
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215 return -1; |
| 0 | 216 #endif |
| 217 } | |
| 218 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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219 void net_get_ip_any4(struct ip_addr *ip) |
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1cc947617c8b
imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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220 { |
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1cc947617c8b
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221 struct in_addr *in_ip = (struct in_addr *) &ip->ip; |
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1cc947617c8b
imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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222 |
|
1cc947617c8b
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223 ip->family = AF_INET; |
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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224 in_ip->s_addr = INADDR_ANY; |
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225 } |
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226 |
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227 void net_get_ip_any6(struct ip_addr *ip) |
|
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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228 { |
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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229 #ifdef HAVE_IPV6 |
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230 ip->family = AF_INET6; |
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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231 ip->ip = in6addr_any; |
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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232 #else |
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233 memset(ip, 0, sizeof(struct ip_addr)); |
|
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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234 #endif |
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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235 } |
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imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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236 |
| 0 | 237 /* Listen for connections on a socket. if `my_ip' is NULL, listen in any |
| 238 address. */ | |
|
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9cb91ed5a110
Added backlog parameter for net_listen*().
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239 int net_listen(const struct ip_addr *my_ip, unsigned int *port, int backlog) |
| 0 | 240 { |
| 241 union sockaddr_union so; | |
| 242 int ret, fd, opt = 1; | |
| 243 socklen_t len; | |
| 244 | |
| 245 i_assert(port != NULL); | |
| 246 | |
| 247 memset(&so, 0, sizeof(so)); | |
| 248 sin_set_port(&so, *port); | |
| 249 sin_set_ip(&so, my_ip); | |
| 250 | |
| 251 /* create the socket */ | |
| 252 fd = socket(so.sin.sin_family, SOCK_STREAM, 0); | |
| 253 #ifdef HAVE_IPV6 | |
| 254 if (fd == -1 && (errno == EINVAL || errno == EAFNOSUPPORT)) { | |
| 255 /* IPv6 is not supported by OS */ | |
| 256 so.sin.sin_family = AF_INET; | |
| 257 so.sin.sin_addr.s_addr = INADDR_ANY; | |
| 258 | |
| 259 fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 260 } | |
| 261 #endif | |
|
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Added some more error messages. Also if net_connect_ip() gives my_ip
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262 if (fd == -1) { |
|
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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263 i_error("socket() failed: %m"); |
| 0 | 264 return -1; |
|
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Added some more error messages. Also if net_connect_ip() gives my_ip
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265 } |
| 0 | 266 |
| 267 /* set socket options */ | |
| 268 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 269 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
| 270 | |
|
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271 /* if using IPv6, bind both on the IPv4 and IPv6 addresses */ |
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272 #ifdef IPV6_V6ONLY |
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273 if (so.sin.sin_family == AF_INET6) { |
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274 opt = 0; |
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275 setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &opt, sizeof(opt)); |
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276 } |
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277 #endif |
| 0 | 278 /* specify the address/port we want to listen in */ |
| 279 ret = bind(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
|
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280 if (ret < 0) { |
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281 if (errno != EADDRINUSE) { |
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282 i_error("bind(%s, %u) failed: %m", |
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283 net_ip2addr(my_ip), *port); |
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284 } |
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285 } else { |
| 0 | 286 /* get the actual port we started listen */ |
| 287 len = SIZEOF_SOCKADDR(so); | |
| 288 ret = getsockname(fd, &so.sa, &len); | |
| 289 if (ret >= 0) { | |
| 290 *port = sin_get_port(&so); | |
| 291 | |
| 292 /* start listening */ | |
|
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293 if (listen(fd, backlog) >= 0) |
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294 return fd; |
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295 |
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296 if (errno != EADDRINUSE) |
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297 i_error("listen() failed: %m"); |
| 0 | 298 } |
| 299 } | |
| 300 | |
| 301 /* error */ | |
|
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302 close_keep_errno(fd); |
| 0 | 303 return -1; |
| 304 } | |
| 305 | |
|
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306 int net_listen_unix(const char *path, int backlog) |
| 0 | 307 { |
| 308 struct sockaddr_un sa; | |
| 309 int fd; | |
| 310 | |
|
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311 memset(&sa, 0, sizeof(sa)); |
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312 sa.sun_family = AF_UNIX; |
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313 if (strocpy(sa.sun_path, path, sizeof(sa.sun_path)) < 0) { |
| 0 | 314 /* too long path */ |
| 315 errno = EINVAL; | |
| 316 return -1; | |
| 317 } | |
| 318 | |
| 319 /* create the socket */ | |
| 320 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
|
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321 if (fd == -1) { |
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322 i_error("socket() failed: %m"); |
| 0 | 323 return -1; |
|
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324 } |
| 0 | 325 |
| 326 /* bind */ | |
|
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327 if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) { |
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328 if (errno != EADDRINUSE) |
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329 i_error("bind(%s) failed: %m", path); |
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330 } else { |
| 0 | 331 /* start listening */ |
|
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332 if (listen(fd, backlog) == 0) |
| 0 | 333 return fd; |
|
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334 |
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335 if (errno != EADDRINUSE) |
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336 i_error("listen() failed: %m"); |
| 0 | 337 } |
| 338 | |
|
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339 close_keep_errno(fd); |
| 0 | 340 return -1; |
| 341 } | |
| 342 | |
| 343 /* Accept a connection on a socket */ | |
|
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344 int net_accept(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 345 { |
| 346 union sockaddr_union so; | |
| 347 int ret; | |
| 348 socklen_t addrlen; | |
| 349 | |
| 350 i_assert(fd >= 0); | |
| 351 | |
| 352 addrlen = sizeof(so); | |
| 353 ret = accept(fd, &so.sa, &addrlen); | |
| 354 | |
|
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355 if (ret < 0) { |
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356 if (errno == EBADF || errno == ENOTSOCK || |
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357 errno == EOPNOTSUPP || errno == EFAULT || errno == EINVAL) |
|
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358 return -2; |
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359 else |
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360 return -1; |
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361 } |
| 0 | 362 |
| 363 if (addr != NULL) sin_get_ip(&so, addr); | |
| 364 if (port != NULL) *port = sin_get_port(&so); | |
| 365 | |
| 366 return ret; | |
| 367 } | |
| 368 | |
| 369 /* Read data from socket, return number of bytes read, -1 = error */ | |
|
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370 ssize_t net_receive(int fd, void *buf, size_t len) |
| 0 | 371 { |
|
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372 ssize_t ret; |
| 0 | 373 |
| 374 i_assert(fd >= 0); | |
| 375 i_assert(buf != NULL); | |
|
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376 i_assert(len <= SSIZE_T_MAX); |
| 0 | 377 |
|
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378 ret = read(fd, buf, len); |
|
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379 if (ret == 0) { |
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380 /* disconnected */ |
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381 errno = 0; |
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382 return -2; |
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383 } |
| 0 | 384 |
|
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385 if (ret < 0) { |
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386 if (errno == EINTR || errno == EAGAIN) |
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387 return 0; |
|
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388 |
|
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389 if (errno == ECONNRESET || errno == ETIMEDOUT) { |
|
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390 /* treat as disconnection */ |
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391 return -2; |
|
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392 } |
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393 } |
| 0 | 394 |
| 395 return ret; | |
| 396 } | |
| 397 | |
| 398 /* Transmit data, return number of bytes sent, -1 = error */ | |
|
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399 ssize_t net_transmit(int fd, const void *data, size_t len) |
| 0 | 400 { |
|
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401 ssize_t ret; |
| 0 | 402 |
| 403 i_assert(fd >= 0); | |
| 404 i_assert(data != NULL); | |
|
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405 i_assert(len <= SSIZE_T_MAX); |
| 0 | 406 |
|
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added t_strdup_noconst() which can be used instead of (char *) t_strdup().
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|
407 ret = send(fd, data, len, 0); |
|
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408 if (ret == -1 && (errno == EINTR || errno == EAGAIN)) |
|
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409 return 0; |
|
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410 |
|
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411 if (errno == EPIPE) |
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412 return -2; |
| 0 | 413 |
| 414 return ret; | |
| 415 } | |
| 416 | |
| 417 /* Get IP addresses for host. ips contains ips_count of IPs, they don't need | |
| 418 to be free'd. Returns 0 = ok, others = error code for net_gethosterror() */ | |
|
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419 int net_gethostbyname(const char *addr, struct ip_addr **ips, int *ips_count) |
| 0 | 420 { |
|
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Marked all non-trivial buffer modifications with @UNSAFE tag. Several
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|
421 /* @UNSAFE */ |
| 0 | 422 #ifdef HAVE_IPV6 |
| 423 union sockaddr_union *so; | |
| 424 struct addrinfo hints, *ai, *origai; | |
| 425 char hbuf[NI_MAXHOST]; | |
| 426 int host_error; | |
| 427 #else | |
| 428 struct hostent *hp; | |
| 429 #endif | |
| 430 int count; | |
| 431 | |
| 432 i_assert(addr != NULL); | |
| 433 i_assert(ips != NULL); | |
| 434 i_assert(ips_count != NULL); | |
| 435 | |
| 436 *ips = NULL; | |
| 437 *ips_count = 0; | |
| 438 | |
| 439 #ifdef HAVE_IPV6 | |
| 440 memset(&hints, 0, sizeof(struct addrinfo)); | |
| 441 hints.ai_socktype = SOCK_STREAM; | |
| 442 | |
| 443 /* save error to host_error for later use */ | |
| 444 host_error = getaddrinfo(addr, NULL, &hints, &ai); | |
| 445 if (host_error != 0) | |
| 446 return host_error; | |
| 447 | |
| 448 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, | |
| 449 sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) | |
| 450 return 1; | |
| 451 | |
| 452 | |
| 453 /* get number of IPs */ | |
| 454 origai = ai; | |
| 455 for (count = 0; ai != NULL; ai = ai->ai_next) | |
| 456 count++; | |
| 457 | |
| 458 *ips_count = count; | |
|
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|
459 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 460 |
| 461 count = 0; | |
| 462 for (ai = origai; ai != NULL; ai = ai->ai_next, count++) { | |
| 463 so = (union sockaddr_union *) ai->ai_addr; | |
| 464 | |
|
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net_gethostbyname() was broken with IPv6 enabled (wasn't really used with
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|
465 sin_get_ip(so, &(*ips)[count]); |
| 0 | 466 } |
| 467 freeaddrinfo(origai); | |
| 468 #else | |
| 469 hp = gethostbyname(addr); | |
| 470 if (hp == NULL) | |
| 471 return h_errno; | |
| 472 | |
| 473 /* get number of IPs */ | |
| 474 count = 0; | |
| 475 while (hp->h_addr_list[count] != NULL) | |
| 476 count++; | |
| 477 | |
| 478 *ips_count = count; | |
|
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|
479 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 480 |
| 481 while (count > 0) { | |
| 482 count--; | |
| 483 | |
| 484 (*ips)[count].family = AF_INET; | |
| 485 memcpy(&(*ips)[count].ip, hp->h_addr_list[count], 4); | |
| 486 } | |
| 487 #endif | |
| 488 | |
| 489 return 0; | |
| 490 } | |
| 491 | |
| 492 /* Get socket address/port */ | |
|
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|
493 int net_getsockname(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 494 { |
| 495 union sockaddr_union so; | |
| 496 socklen_t addrlen; | |
| 497 | |
| 498 i_assert(fd >= 0); | |
| 499 | |
| 500 addrlen = sizeof(so); | |
| 501 if (getsockname(fd, (struct sockaddr *) &so, &addrlen) == -1) | |
| 502 return -1; | |
| 503 | |
| 504 if (addr != NULL) sin_get_ip(&so, addr); | |
| 505 if (port != NULL) *port = sin_get_port(&so); | |
| 506 | |
| 507 return 0; | |
| 508 } | |
| 509 | |
| 2098 | 510 int net_getpeername(int fd, struct ip_addr *addr, unsigned int *port) |
| 511 { | |
| 512 union sockaddr_union so; | |
| 513 socklen_t addrlen; | |
| 514 | |
| 515 i_assert(fd >= 0); | |
| 516 | |
| 517 addrlen = sizeof(so); | |
| 518 if (getpeername(fd, (struct sockaddr *) &so, &addrlen) == -1) | |
| 519 return -1; | |
| 520 | |
| 521 if (addr != NULL) sin_get_ip(&so, addr); | |
| 522 if (port != NULL) *port = sin_get_port(&so); | |
| 523 | |
| 524 return 0; | |
| 525 } | |
| 526 | |
|
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527 const char *net_ip2addr(const struct ip_addr *ip) |
| 0 | 528 { |
| 529 #ifdef HAVE_IPV6 | |
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530 char addr[MAX_IP_LEN+1]; |
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531 |
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532 addr[MAX_IP_LEN] = '\0'; |
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533 if (inet_ntop(ip->family, &ip->ip, addr, MAX_IP_LEN) == NULL) |
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534 return NULL; |
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535 |
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536 return t_strdup(addr); |
| 0 | 537 #else |
| 538 unsigned long ip4; | |
| 539 | |
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540 if (ip->family != AF_INET) |
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541 return NULL; |
| 0 | 542 |
| 543 ip4 = ntohl(ip->ip.s_addr); | |
|
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544 return t_strdup_printf("%lu.%lu.%lu.%lu", |
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545 (ip4 & 0xff000000UL) >> 24, |
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546 (ip4 & 0x00ff0000) >> 16, |
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547 (ip4 & 0x0000ff00) >> 8, |
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548 (ip4 & 0x000000ff)); |
| 0 | 549 #endif |
| 550 } | |
| 551 | |
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552 int net_addr2ip(const char *addr, struct ip_addr *ip) |
| 0 | 553 { |
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554 if (strchr(addr, ':') != NULL) { |
| 0 | 555 /* IPv6 */ |
| 556 ip->family = AF_INET6; | |
| 557 #ifdef HAVE_IPV6 | |
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558 if (inet_pton(AF_INET6, addr, &ip->ip) == 0) |
| 0 | 559 return -1; |
| 560 #else | |
| 561 ip->ip.s_addr = 0; | |
| 562 #endif | |
| 563 } else { | |
| 564 /* IPv4 */ | |
| 565 ip->family = AF_INET; | |
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566 if (inet_aton(addr, (struct in_addr *) &ip->ip) == 0) |
| 0 | 567 return -1; |
| 568 } | |
| 569 | |
| 570 return 0; | |
| 571 } | |
| 572 | |
| 573 /* Get socket error */ | |
| 574 int net_geterror(int fd) | |
| 575 { | |
| 576 int data; | |
| 577 socklen_t len = sizeof(data); | |
| 578 | |
| 579 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &data, &len) == -1) | |
| 580 return -1; | |
| 581 | |
| 582 return data; | |
| 583 } | |
| 584 | |
| 585 /* get error of net_gethostname() */ | |
| 586 const char *net_gethosterror(int error) | |
| 587 { | |
| 588 #ifdef HAVE_IPV6 | |
| 589 i_assert(error != 0); | |
| 590 | |
| 591 if (error == 1) { | |
| 592 /* getnameinfo() failed */ | |
| 593 return strerror(errno); | |
| 594 } | |
| 595 | |
| 596 return gai_strerror(error); | |
| 597 #else | |
| 598 switch (error) { | |
| 599 case HOST_NOT_FOUND: | |
| 600 return "Host not found"; | |
| 601 case NO_ADDRESS: | |
| 602 return "No IP address found for name"; | |
| 603 case NO_RECOVERY: | |
| 604 return "A non-recovable name server error occurred"; | |
| 605 case TRY_AGAIN: | |
| 606 return "A temporary error on an authoritative name server"; | |
| 607 } | |
| 608 | |
| 609 /* unknown error */ | |
| 610 return NULL; | |
| 611 #endif | |
| 612 } | |
| 613 | |
| 614 /* return TRUE if host lookup failed because it didn't exist (ie. not | |
| 615 some error with name server) */ | |
| 616 int net_hosterror_notfound(int error) | |
| 617 { | |
| 618 #ifdef HAVE_IPV6 | |
|
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619 #ifdef EAI_NODATA /* NODATA is depricated */ |
| 0 | 620 return error != 1 && (error == EAI_NONAME || error == EAI_NODATA); |
| 621 #else | |
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622 return error != 1 && (error == EAI_NONAME); |
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623 #endif |
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624 #else |
| 0 | 625 return error == HOST_NOT_FOUND || error == NO_ADDRESS; |
| 626 #endif | |
| 627 } | |
| 628 | |
| 629 /* Get name of TCP service */ | |
|
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630 const char *net_getservbyport(unsigned short port) |
| 0 | 631 { |
| 632 struct servent *entry; | |
| 633 | |
| 349 | 634 entry = getservbyport(htons(port), "tcp"); |
| 0 | 635 return entry == NULL ? NULL : entry->s_name; |
| 636 } | |
| 637 | |
|
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638 bool is_ipv4_address(const char *addr) |
| 0 | 639 { |
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640 while (*addr != '\0') { |
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641 if (*addr != '.' && !i_isdigit(*addr)) |
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642 return FALSE; |
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643 addr++; |
| 0 | 644 } |
| 645 | |
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646 return TRUE; |
| 0 | 647 } |
| 648 | |
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649 bool is_ipv6_address(const char *addr) |
| 0 | 650 { |
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651 while (*addr != '\0') { |
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652 if (*addr != ':' && !i_isxdigit(*addr)) |
|
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653 return FALSE; |
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654 addr++; |
| 0 | 655 } |
| 656 | |
|
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657 return TRUE; |
| 0 | 658 } |