Mercurial > masqmail
annotate src/mservdetect.c @ 214:ecd8d737d78e
removed the old manual because it is really outdated now
In masqmail's 0.3 branch, so much changed that the old manual
causes more harm than it improves the distribution.
Most content is covered by the man pages anyway.
You'll still find the old manual on masqmail's homepage.
| author | meillo@marmaro.de |
|---|---|
| date | Mon, 19 Jul 2010 14:06:08 +0200 |
| parents | bfa7a8b566da |
| children | 41958685480d |
| rev | line source |
|---|---|
| 0 | 1 /* MasqMail |
| 2 Copyright (C) 1999-2001 Oliver Kurth | |
| 187 | 3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de> |
| 0 | 4 |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 18 */ | |
| 19 | |
| 20 | |
| 21 #include "masqmail.h" | |
| 22 #include "readsock.h" | |
| 164 | 23 |
| 24 | |
| 187 | 25 gboolean |
|
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26 init_sockaddr2(struct sockaddr_in * name, gchar* addr, int port) |
| 187 | 27 { |
| 28 struct hostent *he; | |
| 29 struct in_addr ia; | |
| 30 | |
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31 if (inet_aton(addr, &ia) != 0) { |
| 187 | 32 /* IP address */ |
| 33 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr)); | |
| 34 } else { | |
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35 if ((he = gethostbyname(addr)) == NULL) { |
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36 fprintf(stderr, "local address '%s' unknown. (deleting)\n", addr); |
| 187 | 37 return FALSE; |
| 38 } | |
| 39 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr)); | |
| 40 } | |
| 41 name->sin_family = AF_INET; | |
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42 name->sin_port = htons(port); |
| 187 | 43 |
| 44 return TRUE; | |
| 45 } | |
| 46 | |
| 47 | |
| 164 | 48 gchar* |
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49 mserver_detect_online(gchar* addr, int port) |
| 164 | 50 { |
| 51 struct sockaddr_in saddr; | |
| 52 gchar *ret = NULL; | |
| 53 | |
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54 if (!init_sockaddr2(&saddr, addr, port)) { |
| 187 | 55 return NULL; |
| 56 } | |
| 57 | |
| 58 int sock = socket(PF_INET, SOCK_STREAM, 0); | |
| 59 int dup_sock; | |
| 60 if (connect(sock, (struct sockaddr *) (&saddr), sizeof(saddr)) != 0) { | |
| 61 return NULL; | |
| 62 } | |
| 164 | 63 |
| 187 | 64 FILE *in, *out; |
| 65 char buf[256]; | |
| 66 | |
| 67 dup_sock = dup(sock); | |
| 68 out = fdopen(sock, "w"); | |
| 69 in = fdopen(dup_sock, "r"); | |
| 70 | |
| 71 if (!read_sockline(in, buf, 256, 15, READSOCKL_CHUG)) { | |
| 72 return NULL; | |
| 73 } | |
| 164 | 74 |
| 187 | 75 /* this is the protocol (reverse engineered): |
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76 |
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77 S: READY |
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78 C: STAT |
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79 | |
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80 +----------------+-----------------+ |
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81 | | | |
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82 S: DOWN S: UP foo:-1 S: UP foo:1 |
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83 C: QUIT C: QUIT C: QUIT |
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84 |
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85 -> offline -> offline -> online |
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86 `foo' gets printed |
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87 |
| 187 | 88 */ |
| 89 | |
| 90 if (strncmp(buf, "READY", 5) == 0) { | |
| 91 fprintf(out, "STAT\n"); | |
| 92 fflush(out); | |
| 93 if (read_sockline(in, buf, 256, 15, READSOCKL_CHUG)) { | |
| 94 if (strncmp(buf, "DOWN", 4) == 0) { | |
| 95 ret = NULL; | |
| 96 } else if (strncmp(buf, "UP", 2) == 0) { | |
| 97 gchar *p = buf + 3; | |
| 98 while ((*p != ':') && *p) { | |
| 99 p++; | |
| 100 } | |
| 101 if (*p) { | |
| 102 *p = '\0'; | |
| 103 p++; | |
| 104 if ((atoi(p) >= 0) && *p) { | |
| 105 /* `UP foo:N', where `N' is a non-negative number */ | |
| 106 ret = g_strdup(buf + 3); | |
| 164 | 107 } |
| 187 | 108 } else { |
| 109 fprintf(stderr, "unexpected response from mserver after STAT cmd: %s", buf); | |
| 164 | 110 } |
| 187 | 111 } else { |
| 112 fprintf(stderr, "unexpected response from mserver after STAT cmd: %s", buf); | |
| 164 | 113 } |
| 114 } | |
| 115 } | |
| 187 | 116 fprintf(out, "QUIT"); |
| 117 fflush(out); | |
| 118 | |
| 119 close(sock); | |
| 120 close(dup_sock); | |
| 121 fclose(in); | |
| 122 fclose(out); | |
| 123 | |
| 164 | 124 return ret; |
| 125 } | |
| 126 | |
| 0 | 127 |
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128 int |
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129 main(int argc, char *argv[]) |
| 0 | 130 { |
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131 gchar* addr; |
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132 int port; |
| 187 | 133 gchar *name; |
| 0 | 134 |
| 187 | 135 if (argc != 3) { |
| 136 fprintf(stderr, "usage: %s HOST PORT\n", argv[0]); | |
| 137 return 1; | |
| 138 } | |
| 0 | 139 |
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140 addr = argv[1]; |
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141 port = atoi(argv[2]); |
| 187 | 142 |
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143 name = mserver_detect_online(addr, port); |
| 0 | 144 |
| 187 | 145 if (name) { |
| 146 printf("%s\n", name); | |
| 147 return 0; | |
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148 } |
| 187 | 149 return 1; |
| 0 | 150 } |