Mercurial > dovecot > core-2.2
annotate src/lib/network.c @ 5985:8ae4b8d78a25 HEAD
More union usage to avoid casting.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Fri, 13 Jul 2007 05:52:37 +0300 |
| parents | 74a6130211c2 |
| children | 6a64e64fa3a3 |
| rev | line source |
|---|---|
|
3621
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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3577
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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.
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3863
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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 | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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5865
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35 if (ip1->family == AF_INET6) { |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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36 return memcmp(&ip1->u.ip6, &ip2->u.ip6, |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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37 sizeof(ip1->u.ip6)) == 0; |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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38 } |
| 0 | 39 #endif |
| 40 | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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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 { | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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5865
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46 const unsigned char *p; |
| 5865 | 47 unsigned int len, g, h = 0; |
| 48 | |
| 49 #ifdef HAVE_IPV6 | |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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5865
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changeset
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50 if (ip->family == AF_INET6) { |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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51 p = ip->u.ip6.s6_addr; |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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52 len = sizeof(ip->u.ip6); |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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parents:
5865
diff
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53 } else |
| 5865 | 54 #endif |
|
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
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55 { |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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56 return ip->u.ip4.s_addr; |
|
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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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 */ | |
|
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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71 static inline void |
|
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
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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) | |
|
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
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88 memcpy(&so->sin6.sin6_addr, &ip->u.ip6, sizeof(ip->u.ip6)); |
| 0 | 89 else |
| 90 #endif | |
|
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
|
91 memcpy(&so->sin.sin_addr, &ip->u.ip4, sizeof(ip->u.ip4)); |
| 0 | 92 } |
| 93 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
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94 static inline void |
|
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
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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) | |
|
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
|
101 memcpy(&ip->u.ip6, &so->sin6.sin6_addr, sizeof(ip->u.ip6)); |
| 0 | 102 else |
| 103 #endif | |
|
3400
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
Timo Sirainen <tss@iki.fi>
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3373
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104 if (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
|
105 memcpy(&ip->u.ip4, &so->sin.sin_addr, sizeof(ip->u.ip4)); |
|
3400
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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3373
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106 else |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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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 | |
|
3400
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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3373
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126 if (so->sin.sin_family == AF_INET) |
|
ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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127 return ntohs(so->sin.sin_port); |
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ddfa507bb74f
Don't return random data if net_getpeername() or net_getsockname() is used
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128 |
|
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Don't return random data if net_getpeername() or net_getsockname() is used
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129 return 0; |
| 0 | 130 } |
| 131 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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parents:
807
diff
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132 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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133 const struct ip_addr *my_ip) |
| 0 | 134 { |
| 135 union sockaddr_union so; | |
| 136 int fd, ret, opt = 1; | |
| 137 | |
| 138 if (my_ip != NULL && ip->family != my_ip->family) { | |
| 139 i_warning("net_connect_ip(): ip->family != my_ip->family"); | |
| 140 my_ip = NULL; | |
| 141 } | |
| 142 | |
| 143 /* create the socket */ | |
| 144 memset(&so, 0, sizeof(so)); | |
| 145 so.sin.sin_family = ip->family; | |
| 146 fd = socket(ip->family, SOCK_STREAM, 0); | |
| 147 | |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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3400
diff
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148 if (fd == -1) { |
|
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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149 i_error("socket() failed: %m"); |
| 0 | 150 return -1; |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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151 } |
| 0 | 152 |
| 153 /* set socket options */ | |
| 154 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 155 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
|
2639
a307ddd22a3a
net_connect() should be nonblocking (currently unused in Dovecot)
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156 net_set_nonblock(fd, TRUE); |
| 0 | 157 |
| 158 /* set our own address */ | |
| 159 if (my_ip != NULL) { | |
| 160 sin_set_ip(&so, my_ip); | |
| 161 if (bind(fd, &so.sa, SIZEOF_SOCKADDR(so)) == -1) { | |
| 162 /* 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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163 i_error("bind(%s) failed: %m", net_ip2addr(my_ip)); |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
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164 close_keep_errno(fd); |
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3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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165 return -1; |
| 0 | 166 } |
| 167 } | |
| 168 | |
| 169 /* connect */ | |
| 170 sin_set_ip(&so, ip); | |
| 171 sin_set_port(&so, port); | |
| 172 ret = connect(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
| 173 | |
| 174 #ifndef WIN32 | |
| 175 if (ret < 0 && errno != EINPROGRESS) | |
| 176 #else | |
| 177 if (ret < 0 && WSAGetLastError() != WSAEWOULDBLOCK) | |
| 178 #endif | |
| 179 { | |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
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180 close_keep_errno(fd); |
| 0 | 181 return -1; |
| 182 } | |
| 183 | |
| 184 return fd; | |
| 185 } | |
| 186 | |
| 187 int net_connect_unix(const char *path) | |
| 188 { | |
|
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8ae4b8d78a25
More union usage to avoid casting.
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189 union { |
|
8ae4b8d78a25
More union usage to avoid casting.
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190 struct sockaddr sa; |
|
8ae4b8d78a25
More union usage to avoid casting.
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191 struct sockaddr_un un; |
|
8ae4b8d78a25
More union usage to avoid casting.
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192 } sa; |
| 0 | 193 int fd, ret; |
| 194 | |
|
807
35abd7a5d381
Buffer related cleanups. Use PATH_MAX instead of hardcoded 1024 for paths.
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195 memset(&sa, 0, sizeof(sa)); |
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5985
8ae4b8d78a25
More union usage to avoid casting.
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196 sa.un.sun_family = AF_UNIX; |
|
8ae4b8d78a25
More union usage to avoid casting.
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197 if (strocpy(sa.un.sun_path, path, sizeof(sa.un.sun_path)) < 0) { |
| 0 | 198 /* too long path */ |
| 199 errno = EINVAL; | |
| 200 return -1; | |
| 201 } | |
| 202 | |
| 203 /* create the socket */ | |
| 204 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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205 if (fd == -1) { |
|
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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206 i_error("socket(%s) failed: %m", path); |
| 0 | 207 return -1; |
|
3523
d1ed3b3548db
Added some more error messages. Also if net_connect_ip() gives my_ip
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208 } |
| 0 | 209 |
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3076
8d15fea729c2
Use nonblocking connecting for unix sockets.
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210 net_set_nonblock(fd, TRUE); |
|
8d15fea729c2
Use nonblocking connecting for unix sockets.
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211 |
| 0 | 212 /* connect */ |
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More union usage to avoid casting.
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213 ret = connect(fd, &sa.sa, sizeof(sa)); |
| 0 | 214 if (ret < 0 && errno != EINPROGRESS) { |
|
4011
323c09be5f00
Moved dupliated close_save_errno() code to public close_keep_errno() function.
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parents:
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215 close_keep_errno(fd); |
| 0 | 216 return -1; |
| 217 } | |
| 218 | |
| 219 return fd; | |
| 220 } | |
| 221 | |
| 222 void net_disconnect(int fd) | |
| 223 { | |
|
388
792fc5b3daa4
Send error message if close() fails in net_disconnect().
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224 if (close(fd) < 0) |
|
792fc5b3daa4
Send error message if close() fails in net_disconnect().
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225 i_error("net_disconnect() failed: %m"); |
| 0 | 226 } |
| 227 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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228 void net_set_nonblock(int fd, bool nonblock) |
| 0 | 229 { |
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3621
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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3577
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230 if (fd_set_nonblock(fd, nonblock) < 0) |
|
3ae2df67459c
Added fd_set_nonblock() and changed net_set_nonblock() to use it.
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231 i_fatal("fd_set_nonblock(%d) failed: %m", fd); |
| 0 | 232 } |
| 233 | |
|
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55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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234 int net_set_cork(int fd __attr_unused__, bool cork __attr_unused__) |
| 0 | 235 { |
| 236 #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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237 int val = cork; |
|
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
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238 |
|
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Added "bool" type and changed all ints that were used as booleans to bool.
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239 return setsockopt(fd, IPPROTO_TCP, TCP_CORK, &val, sizeof(val)); |
|
410
1f0e7229ee58
Split IOBuffer into mmaped IBuffer, file IBuffer, memory data IBuffer and
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240 #else |
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1f0e7229ee58
Split IOBuffer into mmaped IBuffer, file IBuffer, memory data IBuffer and
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241 errno = ENOPROTOOPT; |
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Split IOBuffer into mmaped IBuffer, file IBuffer, memory data IBuffer and
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242 return -1; |
| 0 | 243 #endif |
| 244 } | |
| 245 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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parents:
807
diff
changeset
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246 void net_get_ip_any4(struct ip_addr *ip) |
|
780
1cc947617c8b
imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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680
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247 { |
|
1cc947617c8b
imap_listen and imaps_listen accepts now "*" as "all IPv4 interfaces" and
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248 ip->family = AF_INET; |
|
5984
74a6130211c2
Changed struct ip_addr to use union for ipv4/ipv6 structs so we don't have
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249 ip->u.ip4.s_addr = INADDR_ANY; |
|
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250 } |
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251 |
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252 void net_get_ip_any6(struct ip_addr *ip) |
|
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253 { |
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254 #ifdef HAVE_IPV6 |
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255 ip->family = AF_INET6; |
|
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256 ip->u.ip6 = in6addr_any; |
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257 #else |
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258 memset(ip, 0, sizeof(struct ip_addr)); |
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259 #endif |
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260 } |
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261 |
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262 int net_listen(const struct ip_addr *my_ip, unsigned int *port, int backlog) |
| 0 | 263 { |
| 264 union sockaddr_union so; | |
| 265 int ret, fd, opt = 1; | |
| 266 socklen_t len; | |
| 267 | |
| 268 memset(&so, 0, sizeof(so)); | |
| 269 sin_set_port(&so, *port); | |
| 270 sin_set_ip(&so, my_ip); | |
| 271 | |
| 272 /* create the socket */ | |
| 273 fd = socket(so.sin.sin_family, SOCK_STREAM, 0); | |
| 274 #ifdef HAVE_IPV6 | |
| 275 if (fd == -1 && (errno == EINVAL || errno == EAFNOSUPPORT)) { | |
| 276 /* IPv6 is not supported by OS */ | |
| 277 so.sin.sin_family = AF_INET; | |
| 278 so.sin.sin_addr.s_addr = INADDR_ANY; | |
| 279 | |
| 280 fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 281 } | |
| 282 #endif | |
|
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283 if (fd == -1) { |
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284 i_error("socket() failed: %m"); |
| 0 | 285 return -1; |
|
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286 } |
| 0 | 287 |
| 288 /* set socket options */ | |
| 289 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); | |
| 290 setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt)); | |
| 291 | |
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292 /* if using IPv6, bind both on the IPv4 and IPv6 addresses */ |
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293 #ifdef IPV6_V6ONLY |
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294 if (so.sin.sin_family == AF_INET6) { |
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295 opt = 0; |
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296 setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &opt, sizeof(opt)); |
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297 } |
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298 #endif |
| 0 | 299 /* specify the address/port we want to listen in */ |
| 300 ret = bind(fd, &so.sa, SIZEOF_SOCKADDR(so)); | |
|
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301 if (ret < 0) { |
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302 if (errno != EADDRINUSE) { |
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303 i_error("bind(%s, %u) failed: %m", |
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304 net_ip2addr(my_ip), *port); |
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305 } |
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306 } else { |
| 0 | 307 /* get the actual port we started listen */ |
| 308 len = SIZEOF_SOCKADDR(so); | |
| 309 ret = getsockname(fd, &so.sa, &len); | |
| 310 if (ret >= 0) { | |
| 311 *port = sin_get_port(&so); | |
| 312 | |
| 313 /* start listening */ | |
|
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314 if (listen(fd, backlog) >= 0) |
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315 return fd; |
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316 |
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317 if (errno != EADDRINUSE) |
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318 i_error("listen() failed: %m"); |
| 0 | 319 } |
| 320 } | |
| 321 | |
| 322 /* error */ | |
|
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Moved dupliated close_save_errno() code to public close_keep_errno() function.
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323 close_keep_errno(fd); |
| 0 | 324 return -1; |
| 325 } | |
| 326 | |
|
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327 int net_listen_unix(const char *path, int backlog) |
| 0 | 328 { |
|
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329 union { |
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330 struct sockaddr sa; |
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331 struct sockaddr_un un; |
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332 } sa; |
| 0 | 333 int fd; |
| 334 | |
|
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335 memset(&sa, 0, sizeof(sa)); |
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336 sa.un.sun_family = AF_UNIX; |
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337 if (strocpy(sa.un.sun_path, path, sizeof(sa.un.sun_path)) < 0) { |
| 0 | 338 /* too long path */ |
| 339 errno = EINVAL; | |
| 340 return -1; | |
| 341 } | |
| 342 | |
| 343 /* create the socket */ | |
| 344 fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
|
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345 if (fd == -1) { |
|
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346 i_error("socket() failed: %m"); |
| 0 | 347 return -1; |
|
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348 } |
| 0 | 349 |
| 350 /* bind */ | |
|
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351 if (bind(fd, &sa.sa, sizeof(sa)) < 0) { |
|
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352 if (errno != EADDRINUSE) |
|
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353 i_error("bind(%s) failed: %m", path); |
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354 } else { |
| 0 | 355 /* start listening */ |
|
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356 if (listen(fd, backlog) == 0) |
| 0 | 357 return fd; |
|
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358 |
|
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359 if (errno != EADDRINUSE) |
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360 i_error("listen() failed: %m"); |
| 0 | 361 } |
| 362 | |
|
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Moved dupliated close_save_errno() code to public close_keep_errno() function.
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363 close_keep_errno(fd); |
| 0 | 364 return -1; |
| 365 } | |
| 366 | |
|
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367 int net_accept(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 368 { |
| 369 union sockaddr_union so; | |
| 370 int ret; | |
| 371 socklen_t addrlen; | |
| 372 | |
| 373 i_assert(fd >= 0); | |
| 374 | |
| 375 addrlen = sizeof(so); | |
| 376 ret = accept(fd, &so.sa, &addrlen); | |
| 377 | |
|
680
84e398270f7f
net_accept() returns now -2 for fatal failures.
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|
378 if (ret < 0) { |
|
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a977ad033903
net_listen_unix() API changed a bit. -1 is now returned for errors that can
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|
379 if (errno == EAGAIN || errno == ECONNABORTED) |
|
a977ad033903
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380 return -1; |
|
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381 else |
|
680
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net_accept() returns now -2 for fatal failures.
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382 return -2; |
|
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net_accept() returns now -2 for fatal failures.
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|
383 } |
| 0 | 384 |
| 385 if (addr != NULL) sin_get_ip(&so, addr); | |
| 386 if (port != NULL) *port = sin_get_port(&so); | |
| 387 | |
| 388 return ret; | |
| 389 } | |
| 390 | |
|
183
4a7ab9e94f25
size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more
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391 ssize_t net_receive(int fd, void *buf, size_t len) |
| 0 | 392 { |
|
183
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393 ssize_t ret; |
| 0 | 394 |
| 395 i_assert(fd >= 0); | |
|
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396 i_assert(len <= SSIZE_T_MAX); |
| 0 | 397 |
|
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Use read() instead of recv() in net_receive(), so it works even with
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398 ret = read(fd, buf, len); |
|
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net_receive, net_transmit: Return -2 for regular disconnection errors. Don't
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399 if (ret == 0) { |
|
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400 /* disconnected */ |
|
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401 errno = 0; |
|
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402 return -2; |
|
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403 } |
| 0 | 404 |
|
781
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405 if (ret < 0) { |
|
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406 if (errno == EINTR || errno == EAGAIN) |
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407 return 0; |
|
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408 |
|
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409 if (errno == ECONNRESET || errno == ETIMEDOUT) { |
|
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410 /* treat as disconnection */ |
|
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411 return -2; |
|
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412 } |
|
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413 } |
| 0 | 414 |
| 415 return ret; | |
| 416 } | |
| 417 | |
|
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418 ssize_t net_transmit(int fd, const void *data, size_t len) |
| 0 | 419 { |
|
183
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420 ssize_t ret; |
| 0 | 421 |
| 422 i_assert(fd >= 0); | |
|
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423 i_assert(len <= SSIZE_T_MAX); |
| 0 | 424 |
|
64
83ae914a583a
added t_strdup_noconst() which can be used instead of (char *) t_strdup().
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425 ret = send(fd, data, len, 0); |
|
781
9cb7022749e7
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426 if (ret == -1 && (errno == EINTR || errno == EAGAIN)) |
|
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427 return 0; |
|
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428 |
|
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429 if (errno == EPIPE) |
|
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430 return -2; |
| 0 | 431 |
| 432 return ret; | |
| 433 } | |
| 434 | |
|
4745
7ee0bb1b2d97
Changed ips_count to unsigned int in net_gethostbyname(). Also removed
Timo Sirainen <tss@iki.fi>
parents:
4699
diff
changeset
|
435 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
|
436 unsigned int *ips_count) |
| 0 | 437 { |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
438 /* @UNSAFE */ |
| 0 | 439 #ifdef HAVE_IPV6 |
| 440 union sockaddr_union *so; | |
| 441 struct addrinfo hints, *ai, *origai; | |
| 442 int host_error; | |
| 443 #else | |
| 444 struct hostent *hp; | |
| 445 #endif | |
| 446 int count; | |
| 447 | |
| 448 *ips = NULL; | |
| 449 *ips_count = 0; | |
| 450 | |
| 451 #ifdef HAVE_IPV6 | |
| 452 memset(&hints, 0, sizeof(struct addrinfo)); | |
| 453 hints.ai_socktype = SOCK_STREAM; | |
| 454 | |
| 455 /* save error to host_error for later use */ | |
| 456 host_error = getaddrinfo(addr, NULL, &hints, &ai); | |
| 457 if (host_error != 0) | |
| 458 return host_error; | |
| 459 | |
| 460 /* get number of IPs */ | |
| 461 origai = ai; | |
| 462 for (count = 0; ai != NULL; ai = ai->ai_next) | |
| 463 count++; | |
| 464 | |
| 465 *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
|
466 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 467 |
| 468 count = 0; | |
| 469 for (ai = origai; ai != NULL; ai = ai->ai_next, count++) { | |
| 470 so = (union sockaddr_union *) ai->ai_addr; | |
| 471 | |
|
2113
c5817f302aa6
net_gethostbyname() was broken with IPv6 enabled (wasn't really used with
Timo Sirainen <tss@iki.fi>
parents:
2098
diff
changeset
|
472 sin_get_ip(so, &(*ips)[count]); |
| 0 | 473 } |
| 474 freeaddrinfo(origai); | |
| 475 #else | |
| 476 hp = gethostbyname(addr); | |
| 477 if (hp == NULL) | |
| 478 return h_errno; | |
| 479 | |
| 480 /* get number of IPs */ | |
| 481 count = 0; | |
| 482 while (hp->h_addr_list[count] != NULL) | |
| 483 count++; | |
| 484 | |
| 485 *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
|
486 *ips = t_malloc(sizeof(struct ip_addr) * count); |
| 0 | 487 |
| 488 while (count > 0) { | |
| 489 count--; | |
| 490 | |
| 491 (*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
|
492 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
|
493 sizeof((*ips)[count].u.ip4)); |
| 0 | 494 } |
| 495 #endif | |
| 496 | |
| 497 return 0; | |
| 498 } | |
| 499 | |
|
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
Timo Sirainen <tss@iki.fi>
parents:
807
diff
changeset
|
500 int net_getsockname(int fd, struct ip_addr *addr, unsigned int *port) |
| 0 | 501 { |
| 502 union sockaddr_union so; | |
| 503 socklen_t addrlen; | |
| 504 | |
| 505 i_assert(fd >= 0); | |
| 506 | |
| 507 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
|
508 if (getsockname(fd, &so.sa, &addrlen) == -1) |
| 0 | 509 return -1; |
| 510 | |
| 511 if (addr != NULL) sin_get_ip(&so, addr); | |
| 512 if (port != NULL) *port = sin_get_port(&so); | |
| 513 | |
| 514 return 0; | |
| 515 } | |
| 516 | |
| 2098 | 517 int net_getpeername(int fd, struct ip_addr *addr, unsigned int *port) |
| 518 { | |
| 519 union sockaddr_union so; | |
| 520 socklen_t addrlen; | |
| 521 | |
| 522 i_assert(fd >= 0); | |
| 523 | |
| 524 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
|
525 if (getpeername(fd, &so.sa, &addrlen) == -1) |
| 2098 | 526 return -1; |
| 527 | |
| 528 if (addr != NULL) sin_get_ip(&so, addr); | |
| 529 if (port != NULL) *port = sin_get_port(&so); | |
| 530 | |
| 531 return 0; | |
| 532 } | |
| 533 | |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
534 const char *net_ip2addr(const struct ip_addr *ip) |
| 0 | 535 { |
| 536 #ifdef HAVE_IPV6 | |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
537 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
|
538 |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
539 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
|
540 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
|
541 return NULL; |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
542 |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
543 return t_strdup(addr); |
| 0 | 544 #else |
| 545 unsigned long ip4; | |
| 546 | |
|
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
547 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
|
548 return NULL; |
| 0 | 549 |
|
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
|
550 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
|
551 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
|
552 (ip4 & 0xff000000UL) >> 24, |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
553 (ip4 & 0x00ff0000) >> 16, |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
554 (ip4 & 0x0000ff00) >> 8, |
|
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
Timo Sirainen <tss@iki.fi>
parents:
781
diff
changeset
|
555 (ip4 & 0x000000ff)); |
| 0 | 556 #endif |
| 557 } | |
| 558 | |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
559 int net_addr2ip(const char *addr, struct ip_addr *ip) |
| 0 | 560 { |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
561 if (strchr(addr, ':') != NULL) { |
| 0 | 562 /* IPv6 */ |
| 563 ip->family = AF_INET6; | |
| 564 #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
|
565 if (inet_pton(AF_INET6, addr, &ip->u.ip6) == 0) |
| 0 | 566 return -1; |
| 567 #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
|
568 ip->u.ip4.s_addr = 0; |
| 0 | 569 #endif |
| 570 } else { | |
| 571 /* IPv4 */ | |
| 572 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
|
573 if (inet_aton(addr, &ip->u.ip4) == 0) |
| 0 | 574 return -1; |
| 575 } | |
| 576 | |
| 577 return 0; | |
| 578 } | |
| 579 | |
|
4684
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
580 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
|
581 struct ip_addr *dest) |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
582 { |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
583 #ifdef HAVE_IPV6 |
|
4699
9e4cc68b71b2
Fix net_ipv6_mapped_ipv4_convert() to be actually portable.
Timo Sirainen <tss@iki.fi>
parents:
4684
diff
changeset
|
584 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
|
585 { 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
|
586 |
|
4684
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
587 if (!IPADDR_IS_V6(src)) |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
588 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
|
589 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
|
590 return -1; |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
591 |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
592 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
|
593 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
|
594 return 0; |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
595 #else |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
596 return -1; |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
597 #endif |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
598 } |
|
4f1df4b90500
Added net_ipv6_mapped_ipv4_convert().
Timo Sirainen <tss@iki.fi>
parents:
4018
diff
changeset
|
599 |
| 0 | 600 int net_geterror(int fd) |
| 601 { | |
| 602 int data; | |
| 603 socklen_t len = sizeof(data); | |
| 604 | |
| 605 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &data, &len) == -1) | |
| 606 return -1; | |
| 607 | |
| 608 return data; | |
| 609 } | |
| 610 | |
| 611 const char *net_gethosterror(int error) | |
| 612 { | |
| 613 #ifdef HAVE_IPV6 | |
| 614 i_assert(error != 0); | |
| 615 | |
| 616 return gai_strerror(error); | |
| 617 #else | |
| 618 switch (error) { | |
| 619 case HOST_NOT_FOUND: | |
| 620 return "Host not found"; | |
| 621 case NO_ADDRESS: | |
| 622 return "No IP address found for name"; | |
| 623 case NO_RECOVERY: | |
| 624 return "A non-recovable name server error occurred"; | |
| 625 case TRY_AGAIN: | |
| 626 return "A temporary error on an authoritative name server"; | |
| 627 } | |
| 628 | |
| 629 /* unknown error */ | |
| 630 return NULL; | |
| 631 #endif | |
| 632 } | |
| 633 | |
| 634 int net_hosterror_notfound(int error) | |
| 635 { | |
| 636 #ifdef HAVE_IPV6 | |
|
1915
79790750c349
importing new index code. mbox still broken.
Timo Sirainen <tss@iki.fi>
parents:
1871
diff
changeset
|
637 #ifdef EAI_NODATA /* NODATA is depricated */ |
| 0 | 638 return error != 1 && (error == EAI_NONAME || error == EAI_NODATA); |
| 639 #else | |
|
1915
79790750c349
importing new index code. mbox still broken.
Timo Sirainen <tss@iki.fi>
parents:
1871
diff
changeset
|
640 return error != 1 && (error == EAI_NONAME); |
|
79790750c349
importing new index code. mbox still broken.
Timo Sirainen <tss@iki.fi>
parents:
1871
diff
changeset
|
641 #endif |
|
79790750c349
importing new index code. mbox still broken.
Timo Sirainen <tss@iki.fi>
parents:
1871
diff
changeset
|
642 #else |
| 0 | 643 return error == HOST_NOT_FOUND || error == NO_ADDRESS; |
| 644 #endif | |
| 645 } | |
| 646 | |
|
2113
c5817f302aa6
net_gethostbyname() was broken with IPv6 enabled (wasn't really used with
Timo Sirainen <tss@iki.fi>
parents:
2098
diff
changeset
|
647 const char *net_getservbyport(unsigned short port) |
| 0 | 648 { |
| 649 struct servent *entry; | |
| 650 | |
| 349 | 651 entry = getservbyport(htons(port), "tcp"); |
| 0 | 652 return entry == NULL ? NULL : entry->s_name; |
| 653 } | |
| 654 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
Timo Sirainen <tss@iki.fi>
parents:
3681
diff
changeset
|
655 bool is_ipv4_address(const char *addr) |
| 0 | 656 { |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
657 while (*addr != '\0') { |
|
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
658 if (*addr != '.' && !i_isdigit(*addr)) |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
Timo Sirainen <tss@iki.fi>
parents:
3681
diff
changeset
|
659 return FALSE; |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
660 addr++; |
| 0 | 661 } |
| 662 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
Timo Sirainen <tss@iki.fi>
parents:
3681
diff
changeset
|
663 return TRUE; |
| 0 | 664 } |
| 665 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
Timo Sirainen <tss@iki.fi>
parents:
3681
diff
changeset
|
666 bool is_ipv6_address(const char *addr) |
| 0 | 667 { |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
668 while (*addr != '\0') { |
|
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
669 if (*addr != ':' && !i_isxdigit(*addr)) |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
Timo Sirainen <tss@iki.fi>
parents:
3681
diff
changeset
|
670 return FALSE; |
|
1485
8c28289a15a1
s/host/addr/ in a few network functions
Timo Sirainen <tss@iki.fi>
parents:
1268
diff
changeset
|
671 addr++; |
| 0 | 672 } |
| 673 | |
|
3863
55df57c028d4
Added "bool" type and changed all ints that were used as booleans to bool.
Timo Sirainen <tss@iki.fi>
parents:
3681
diff
changeset
|
674 return TRUE; |
| 0 | 675 } |