Mercurial > masqmail
annotate src/readsock.c @ 246:4cff8638dd9b
SMTP client: tries EHLO now always first
Changed the behavior of the SMTP client. Now always an EHLO greeting
is sent, no matter what kind of greeting text the server had sent. If
the EHLO failed, an HELO greeting is tried as fall back. This is the
behavior RFC 2821 requires (section 3.2).
This change will fix setups that were not possible to sent to a
server because that requires AUTH but hadn't said ``ESMTP'' in its
greeting message.
See also: Debian bug #349211
Thanks to Steffen (inne)
author | markus schnalke <meillo@marmaro.de> |
---|---|
date | Thu, 28 Oct 2010 16:40:02 -0300 |
parents | 3654c502a4df |
children | 41958685480d |
rev | line source |
---|---|
0 | 1 /* MasqMail |
2 Copyright (C) 2000 Oliver Kurth | |
3 | |
4 This program is free software; you can redistribute it and/or modify | |
5 it under the terms of the GNU General Public License as published by | |
6 the Free Software Foundation; either version 2 of the License, or | |
7 (at your option) any later version. | |
8 | |
9 This program is distributed in the hope that it will be useful, | |
10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 GNU General Public License for more details. | |
13 | |
14 You should have received a copy of the GNU General Public License | |
15 along with this program; if not, write to the Free Software | |
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 */ | |
18 | |
19 #include <signal.h> | |
20 #include <stdio.h> | |
21 #include <stdlib.h> | |
22 #include <setjmp.h> | |
23 #include <unistd.h> | |
24 #include <ctype.h> | |
15 | 25 |
0 | 26 #include "readsock.h" |
15 | 27 /*#include "masqmail.h"*/ |
0 | 28 |
29 jmp_buf jmp_timeout; | |
30 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
31 static void |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
32 sig_timeout_handler(int sig) |
0 | 33 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
34 longjmp(jmp_timeout, 1); |
0 | 35 } |
36 | |
37 static struct sigaction old_sa_alrm; | |
38 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
39 static void |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
40 alarm_on(int timeout) |
0 | 41 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
42 struct sigaction sa; |
0 | 43 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
44 sa.sa_handler = sig_timeout_handler; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
45 sigemptyset(&(sa.sa_mask)); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
46 sa.sa_flags = 0; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
47 sigaction(SIGALRM, &sa, &old_sa_alrm); |
0 | 48 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
49 if (timeout > 0) |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
50 alarm(timeout); |
0 | 51 } |
52 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
53 static void |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
54 alarm_off() |
0 | 55 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
56 alarm(0); |
0 | 57 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
58 sigaction(SIGALRM, &old_sa_alrm, NULL); |
0 | 59 } |
60 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
61 static void |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
62 _read_chug(FILE * in) |
0 | 63 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
64 int c = 0; |
0 | 65 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
66 c = fgetc(in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
67 while (isspace(c) && (c != EOF)) |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
68 c = fgetc(in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
69 ungetc(c, in); |
0 | 70 } |
71 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
72 static int |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
73 _read_line(FILE * in, char *buf, int buf_len, int timeout) |
0 | 74 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
75 int p = 0; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
76 int c = 0; |
0 | 77 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
78 c = fgetc(in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
79 while ((c != '\n') && (c != EOF) && (p < buf_len - 1)) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
80 buf[p++] = c; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
81 c = fgetc(in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
82 } |
0 | 83 |
15 | 84 buf[p] = '\0'; |
0 | 85 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
86 if (c == EOF) |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
87 return -1; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
88 else if (p >= buf_len) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
89 ungetc(c, in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
90 return -2; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
91 } |
0 | 92 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
93 buf[p++] = c; /* \n */ |
15 | 94 buf[p] = '\0'; |
0 | 95 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
96 return p; |
0 | 97 } |
98 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
99 int |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
100 read_sockline(FILE * in, char *buf, int buf_len, int timeout, unsigned int flags) |
0 | 101 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
102 int p = 0; |
0 | 103 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
104 if (setjmp(jmp_timeout) != 0) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
105 alarm_off(); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
106 return -3; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
107 } |
0 | 108 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
109 alarm_on(timeout); |
0 | 110 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
111 /* strip leading spaces */ |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
112 if (flags & READSOCKL_CHUG) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
113 _read_chug(in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
114 } |
0 | 115 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
116 p = _read_line(in, buf, buf_len, timeout); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
117 |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
118 alarm_off(); |
0 | 119 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
120 if (p > 1) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
121 /* here we are sure that buf[p-1] == '\n' */ |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
122 if (flags & READSOCKL_CVT_CRLF) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
123 if ((buf[p - 2] == '\r') && (buf[p - 1] == '\n')) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
124 buf[p - 2] = '\n'; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
125 buf[p - 1] = 0; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
126 p--; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
127 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
128 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
129 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
130 return p; |
0 | 131 } |
132 | |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
133 int |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
134 read_sockline1(FILE * in, char **pbuf, int *buf_len, int timeout, unsigned int flags) |
0 | 135 { |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
136 int p = 0, size = *buf_len; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
137 char *buf; |
0 | 138 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
139 if (setjmp(jmp_timeout) != 0) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
140 alarm_off(); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
141 return -3; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
142 } |
0 | 143 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
144 alarm_on(timeout); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
145 |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
146 /* strip leading spaces */ |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
147 if (flags & READSOCKL_CHUG) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
148 _read_chug(in); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
149 } |
0 | 150 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
151 if (!*pbuf) |
27
3654c502a4df
g_malloc terminates the program on failure automatically
meillo@marmaro.de
parents:
15
diff
changeset
|
152 *pbuf = g_malloc(size); |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
153 buf = *pbuf; |
0 | 154 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
155 while (1) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
156 int pp; |
0 | 157 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
158 pp = _read_line(in, buf, size, timeout); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
159 if (pp == -2) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
160 *pbuf = realloc(*pbuf, *buf_len + size); |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
161 buf = *pbuf + *buf_len; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
162 *buf_len += size; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
163 p += size; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
164 } else { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
165 if (pp > 0) |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
166 p += pp; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
167 else |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
168 p = pp; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
169 break; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
170 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
171 } |
0 | 172 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
173 alarm_off(); |
0 | 174 |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
175 if (p > 1) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
176 buf = *pbuf; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
177 /* here we are sure that buf[p-1] == '\n' */ |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
178 if (flags & READSOCKL_CVT_CRLF) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
179 if ((buf[p - 2] == '\r') && (buf[p - 1] == '\n')) { |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
180 buf[p - 2] = '\n'; |
15 | 181 buf[p - 1] = '\0'; |
10
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
182 p--; |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
183 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
184 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
185 } |
26e34ae9a3e3
changed indention and line wrapping to a more consistent style
meillo@marmaro.de
parents:
0
diff
changeset
|
186 return p; |
0 | 187 } |