pipe.c
6.24 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2007 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA */
/* Syntax: pipe [:envelope] <program: string>
The pipe action executes a shell command specified by its
argument and pipes the entire message to its standard input.
The envelope of the message is included, if the :envelope tag is given.
Notes/FIXME: 1. it would be nice to implement meta-variables in
<program call> which would expand to various
items from the message being handled.
2. :mime tag could be useful too.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <signal.h>
#include <regex.h>
#include <mu_dbm.h>
#include <mailutils/libsieve.h>
#define ASSERT(expr, diag, ec) \
if (!(expr)) \
{ \
if (ec) \
mu_sieve_error (mach, "%d: %s: %s", \
mu_sieve_get_message_num (mach), \
diag, \
mu_strerror (ec)); \
else \
mu_sieve_error (mach, "%d: %s", \
mu_sieve_get_message_num (mach), \
diag); \
mu_sieve_abort (mach); \
}
#define ASSERT2(expr, diag, arg, ec) \
if (!(expr)) \
{ \
if (ec) \
mu_sieve_error (mach, "%d: `%s': %s: %s", \
mu_sieve_get_message_num (mach), \
arg, \
diag, \
mu_strerror (ec)); \
else \
mu_sieve_error (mach, "%d: `%s': %s", \
mu_sieve_get_message_num (mach), \
arg, \
diag); \
mu_sieve_abort (mach); \
}
int
sieve_action_pipe (mu_sieve_machine_t mach, mu_list_t args, mu_list_t tags)
{
int rc;
mu_message_t msg;
mu_sieve_value_t *val;
char *cmd;
mu_stream_t mstr, pstr;
char buf[512];
size_t n;
mu_envelope_t env;
val = mu_sieve_value_get (args, 0);
ASSERT (val, _("cannot get command!"), 0);
cmd = val->v.string;
mu_sieve_log_action (mach, "PIPE", NULL);
if (mu_sieve_get_debug_level (mach) & MU_SIEVE_DEBUG_TRACE)
{
mu_sieve_locus_t locus;
mu_sieve_get_locus (mach, &locus);
mu_sieve_debug (mach, "%s:%lu: PIPE\n",
locus.source_file,
(unsigned long) locus.source_line);
}
if (mu_sieve_is_dry_run (mach))
return 0;
msg = mu_sieve_get_message (mach);
mu_message_get_envelope (msg, &env);
rc = mu_message_get_stream (msg, &mstr);
ASSERT (rc == 0, _("cannot get message stream"), rc);
rc = mu_prog_stream_create (&pstr, cmd, MU_STREAM_WRITE);
ASSERT2 (rc == 0, _("cannot create command stream"), cmd, rc);
rc = mu_stream_open (pstr);
ASSERT2 (rc == 0, _("cannot open command stream"), cmd, rc);
if (mu_sieve_tag_lookup (tags, "envelope", &val))
{
char *p;
rc = mu_envelope_aget_sender (env, &p);
ASSERT (rc == 0, _("cannot get envelope sender"), rc);
rc = mu_stream_sequential_write (pstr, "From ", 5);
ASSERT (rc == 0, _("stream write failed"), rc);
mu_stream_sequential_write (pstr, p, strlen (p));
free (p);
rc = mu_stream_sequential_write (pstr, " ", 1);
ASSERT (rc == 0, _("stream write failed"), rc);
rc = mu_envelope_aget_date (env, &p);
ASSERT (rc == 0, _("cannot get envelope date"), rc);
rc = mu_stream_sequential_write (pstr, p, strlen (p));
ASSERT (rc == 0, _("stream write failed"), rc);
free (p);
rc = mu_stream_sequential_write (pstr, "\n", 1);
ASSERT (rc == 0, _("stream write failed"), rc);
}
mu_stream_seek (mstr, 0, SEEK_SET);
while (rc == 0
&& mu_stream_sequential_read (mstr, buf, sizeof buf, &n) == 0
&& n > 0)
rc = mu_stream_sequential_write (pstr, buf, n);
mu_stream_close (pstr);
mu_stream_destroy (&pstr, mu_stream_get_owner (pstr));
ASSERT2 (rc == 0, _("command failed"), cmd, rc);
return 0;
}
/* Tagged arguments: */
static mu_sieve_tag_def_t pipe_tags[] = {
{ "envelope", SVT_VOID },
{ NULL }
};
static mu_sieve_tag_group_t pipe_tag_groups[] = {
{ pipe_tags, NULL },
{ NULL }
};
/* Required arguments: */
static mu_sieve_data_type pipe_args[] = {
SVT_STRING, /* program call */
SVT_VOID
};
int
SIEVE_EXPORT (pipe, init) (mu_sieve_machine_t mach)
{
return mu_sieve_register_action (mach, "pipe", sieve_action_pipe,
pipe_args, pipe_tag_groups, 1);
}