Mercurial > masqmail
annotate src/mservdetect.c @ 323:29de6a1c4538
Fixed an important bug with folded headers!
g_strconcat() returns a *copy* of the string, but hdr->value still
pointed to the old header (which probably was a memory leak, too).
If the folded part had been quite small it was likely that the new
string was at the same position as the old one, thus making everything
go well. But if pretty long headers were folded several times it was
likely that the new string was allocated somewhere else in memory,
thus breaking things. In result mails to lots of recipients (folded
header) were frequently only sent to the ones in the first line. Sorry
for the inconvenience.
| author | meillo@marmaro.de |
|---|---|
| date | Fri, 03 Jun 2011 09:47:27 +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 } |