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/* notify_mailto.c -- email notification method
*
* 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>
#include "notify_mailto.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "imap/global.h"
#include "libconfig.h"
#include "sieve/sieve_interface.h"
#include "times.h"
static int contains_8bit(const char *msg);
static int global_outgoing_count = 0;
char* notify_mailto(const char *class,
const char *priority __attribute__((unused)),
const char *user __attribute__((unused)),
const char *mailbox __attribute__((unused)),
int nopt, char **options,
const char *message,
const char *fname __attribute__((unused)))
{
FILE *sm;
const char *smbuf[7];
char outmsgid[256];
int sm_stat;
time_t t;
char datestr[RFC5322_DATETIME_MAX+1];
pid_t sm_pid;
int fds[2];
/* XXX check/parse options (mailto URI) */
if (nopt < 1)
return strdup("NO mailto URI not specified");
smbuf[0] = "sendmail";
smbuf[1] = "-i"; /* ignore dots */
smbuf[2] = "-f";
smbuf[3] = "<>"; /* XXX do we want a return-path? */
smbuf[4] = "--";
smbuf[5] = options[0];
smbuf[6] = NULL;
if (pipe(fds))
return strdup("NO mailto could not open pipe");
if ((sm_pid = 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 **) smbuf);
/* if we're here we suck */
return strdup("NO mailto couldn't exec");
}
/* i'm the parent */
close(fds[0]);
sm = fdopen(fds[1], "w");
if (!sm)
return strdup("NO mailto could not spawn sendmail process");
t = time(NULL);
snprintf(outmsgid, sizeof(outmsgid), "<cmu-sieve-%d-%lu-%d@%s>",
(int) sm_pid, t, global_outgoing_count++, config_servername);
fprintf(sm, "Message-ID: %s\r\n", outmsgid);
time_to_rfc5322(t, datestr, sizeof(datestr));
fprintf(sm, "Date: %s\r\n", datestr);
fprintf(sm, "X-Sieve: %s\r\n", SIEVE_VERSION);
fprintf(sm, "From: Mail Sieve Subsystem <%s>\r\n", config_getstring(IMAPOPT_POSTMASTER));
fprintf(sm, "To: <%s>\r\n", options[0]);
fprintf(sm, "Subject: [%s] New mail notification\r\n", class);
if (contains_8bit(message)) {
fprintf(sm, "MIME-Version: 1.0\r\n");
fprintf(sm, "Content-Type: text/plain; charset=UTF-8\r\n");
fprintf(sm, "Content-Transfer-Encoding: 8BIT\r\n");
}
fprintf(sm, "\r\n");
fprintf(sm, "%s\r\n", message);
fclose(sm);
while (waitpid(sm_pid, &sm_stat, 0) < 0);
/* XXX check for sendmail exit code */
/* XXX add outmsgid to duplicate delivery database to prevent loop */
return strdup("OK mailto notification successful");
}
static int contains_8bit(const char * msg)
{
int result = 0;
if (msg) {
const unsigned char *s = (const unsigned char *)msg;
while (*s) {
if (0 != (*s & 0x80)) {
result = 1;
break ;
}
s++;
}
}
return result;
}