pipe.c
6.24 KB
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/* 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/sieve.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);
}