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| author | markus schnalke <meillo@marmaro.de> |
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| date | Sat, 07 Feb 2015 11:45:07 +0100 |
| parents | b27f66555ba8 |
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| rev | line source |
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1 /* |
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2 ** MasqMail |
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3 ** Copyright (C) 1999-2001 Oliver Kurth |
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4 ** Copyright (C) 2010 markus schnalke <meillo@marmaro.de> |
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5 ** |
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6 ** This program is free software; you can redistribute it and/or modify |
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7 ** it under the terms of the GNU General Public License as published by |
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8 ** the Free Software Foundation; either version 2 of the License, or |
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9 ** (at your option) any later version. |
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10 ** |
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11 ** This program is distributed in the hope that it will be useful, |
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12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 ** GNU General Public License for more details. |
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15 ** |
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16 ** You should have received a copy of the GNU General Public License |
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17 ** along with this program; if not, write to the Free Software |
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18 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 0 | 19 */ |
| 20 | |
| 21 | |
| 22 #include "masqmail.h" | |
| 23 #include "readsock.h" | |
| 164 | 24 |
| 25 | |
| 187 | 26 gboolean |
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27 init_sockaddr2(struct sockaddr_in *name, gchar *addr, int port) |
| 187 | 28 { |
| 29 struct hostent *he; | |
| 30 struct in_addr ia; | |
| 31 | |
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32 if (inet_aton(addr, &ia) != 0) { |
| 187 | 33 /* IP address */ |
| 34 memcpy(&(name->sin_addr), &ia, sizeof(name->sin_addr)); | |
| 35 } else { | |
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36 if ((he = gethostbyname(addr)) == NULL) { |
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37 fprintf(stderr, "local address '%s' unknown. (deleting)\n", addr); |
| 187 | 38 return FALSE; |
| 39 } | |
| 40 memcpy(&(name->sin_addr), he->h_addr, sizeof(name->sin_addr)); | |
| 41 } | |
| 42 name->sin_family = AF_INET; | |
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43 name->sin_port = htons(port); |
| 187 | 44 |
| 45 return TRUE; | |
| 46 } | |
| 47 | |
| 48 | |
| 164 | 49 gchar* |
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50 mserver_detect_online(gchar *addr, int port) |
| 164 | 51 { |
| 52 struct sockaddr_in saddr; | |
| 53 gchar *ret = NULL; | |
| 54 | |
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55 if (!init_sockaddr2(&saddr, addr, port)) { |
| 187 | 56 return NULL; |
| 57 } | |
| 58 | |
| 59 int sock = socket(PF_INET, SOCK_STREAM, 0); | |
| 60 int dup_sock; | |
| 61 if (connect(sock, (struct sockaddr *) (&saddr), sizeof(saddr)) != 0) { | |
| 62 return NULL; | |
| 63 } | |
| 164 | 64 |
| 187 | 65 FILE *in, *out; |
| 66 char buf[256]; | |
| 67 | |
| 68 dup_sock = dup(sock); | |
| 69 out = fdopen(sock, "w"); | |
| 70 in = fdopen(dup_sock, "r"); | |
| 71 | |
| 72 if (!read_sockline(in, buf, 256, 15, READSOCKL_CHUG)) { | |
| 73 return NULL; | |
| 74 } | |
| 164 | 75 |
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76 /* |
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77 ** this is the protocol (reverse engineered): |
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78 ** |
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79 ** S: READY |
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80 ** C: STAT |
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81 ** | |
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82 ** +----------------+-----------------+ |
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83 ** | | | |
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84 ** S: DOWN S: UP foo:-1 S: UP foo:1 |
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85 ** C: QUIT C: QUIT C: QUIT |
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86 ** |
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87 ** -> offline -> offline -> online |
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88 ** `foo' gets printed |
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89 ** |
| 187 | 90 */ |
| 91 | |
| 92 if (strncmp(buf, "READY", 5) == 0) { | |
| 93 fprintf(out, "STAT\n"); | |
| 94 fflush(out); | |
| 95 if (read_sockline(in, buf, 256, 15, READSOCKL_CHUG)) { | |
| 96 if (strncmp(buf, "DOWN", 4) == 0) { | |
| 97 ret = NULL; | |
| 98 } else if (strncmp(buf, "UP", 2) == 0) { | |
| 99 gchar *p = buf + 3; | |
| 100 while ((*p != ':') && *p) { | |
| 101 p++; | |
| 102 } | |
| 103 if (*p) { | |
| 104 *p = '\0'; | |
| 105 p++; | |
| 106 if ((atoi(p) >= 0) && *p) { | |
| 107 /* `UP foo:N', where `N' is a non-negative number */ | |
| 108 ret = g_strdup(buf + 3); | |
| 164 | 109 } |
| 187 | 110 } else { |
| 111 fprintf(stderr, "unexpected response from mserver after STAT cmd: %s", buf); | |
| 164 | 112 } |
| 187 | 113 } else { |
| 114 fprintf(stderr, "unexpected response from mserver after STAT cmd: %s", buf); | |
| 164 | 115 } |
| 116 } | |
| 117 } | |
| 187 | 118 fprintf(out, "QUIT"); |
| 119 fflush(out); | |
| 120 | |
| 121 close(sock); | |
| 122 close(dup_sock); | |
| 123 fclose(in); | |
| 124 fclose(out); | |
| 125 | |
| 164 | 126 return ret; |
| 127 } | |
| 128 | |
| 0 | 129 |
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130 int |
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131 main(int argc, char *argv[]) |
| 0 | 132 { |
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133 gchar *addr; |
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134 int port; |
| 187 | 135 gchar *name; |
| 0 | 136 |
| 187 | 137 if (argc != 3) { |
| 138 fprintf(stderr, "usage: %s HOST PORT\n", argv[0]); | |
| 139 return 1; | |
| 140 } | |
| 0 | 141 |
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142 addr = argv[1]; |
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143 port = atoi(argv[2]); |
| 187 | 144 |
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145 name = mserver_detect_online(addr, port); |
| 0 | 146 |
| 187 | 147 if (name) { |
| 148 printf("%s\n", name); | |
| 149 return 0; | |
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150 } |
| 187 | 151 return 1; |
| 0 | 152 } |