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smtpclient.c
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smtpclient.c
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/* smtpclient.c -- Routines for sending a message via SMTP
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "xmalloc.h"
#include "global.h"
#include "exitcodes.h"
#include "imap/imap_err.h"
#include "smtpclient.h"
EXPORTED pid_t open_sendmail(const char *argv[], FILE **sm)
{
int fds[2];
FILE *ret;
pid_t p;
if (pipe(fds)) {
printf("451 lmtpd: didn't start pipe()?!?\r\n");
fatal("couldn't start pipe()", EC_OSERR);
}
if ((p = fork()) == 0) {
/* i'm the child! run sendmail! */
close(fds[1]);
/* make the pipe be stdin */
dup2(fds[0], 0);
execv(config_getstring(IMAPOPT_SENDMAIL), (char **) argv);
/* if we're here we suck */
printf("451 lmtpd: didn't exec() sendmail?!?\r\n");
exit(EXIT_FAILURE);
}
if (p < 0) {
/* failure */
*sm = NULL;
return p;
}
/* parent */
close(fds[0]);
ret = fdopen(fds[1], "w");
*sm = ret;
return p;
}
/* sendmail_errstr. create a descriptive message given 'sm_stat':
the exit code from wait() from sendmail.
not thread safe, but probably ok */
EXPORTED char *sendmail_errstr(int sm_stat)
{
static char errstr[200];
if (WIFEXITED(sm_stat)) {
snprintf(errstr, sizeof errstr,
"Sendmail process terminated normally, exit status %d\n",
WEXITSTATUS(sm_stat));
} else if (WIFSIGNALED(sm_stat)) {
snprintf(errstr, sizeof errstr,
"Sendmail process terminated abnormally, signal = %d %s\n",
WTERMSIG(sm_stat),
#ifdef WCOREDUMP
WCOREDUMP(sm_stat) ? " -- core file generated" :
#endif
"");
} else if (WIFSTOPPED(sm_stat)) {
snprintf(errstr, sizeof errstr,
"Sendmail process stopped, signal = %d\n",
WTERMSIG(sm_stat));
} else {
return NULL;
}
return errstr;
}

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