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ptloader.c
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ptloader.c
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/* ptloader.c -- group loader daemon
*
* 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.
*
* $Id: ptloader.c,v 1.50 2010/01/06 17:01:58 murch Exp $
*/
#include <config.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/param.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/uio.h>
#include "auth_pts.h"
#include "cyrusdb.h"
#include "exitcodes.h"
#include "hash.h"
#include "imap/global.h"
#include "libconfig.h"
#include "retry.h"
#include "xmalloc.h"
#include "ptloader.h"
struct pts_module *pts_modules[] = {
#ifdef HAVE_LDAP
&pts_ldap,
#endif
#ifdef HAVE_AFSKRB
&pts_afskrb,
#endif
NULL };
extern void setproctitle_init(int argc, char **argv, char **envp);
static struct pts_module *pts_fromname()
{
int i;
const char *name = config_getstring(IMAPOPT_PTS_MODULE);
static struct pts_module *pts = NULL;
if (pts)
return pts;
for (i = 0; pts_modules[i]; i++) {
if (!strcmp(pts_modules[i]->name, name)) {
pts = pts_modules[i]; break;
}
}
if (!pts) {
char errbuf[1024];
snprintf(errbuf, sizeof(errbuf),
"PTS module %s not supported", name);
fatal(errbuf, EC_CONFIG);
}
return pts;
}
void ptsmodule_init(void)
{
struct pts_module *pts = pts_fromname();
pts->init();
}
struct auth_state *ptsmodule_make_authstate(const char *identifier,
size_t size,
const char **reply, int *dsize)
{
struct pts_module *pts = pts_fromname();
return pts->make_authstate(identifier, size, reply, dsize);
}
/* config.c info (libimap) */
const int config_need_data = 0;
/* Globals */
#define DB (config_ptscache_db)
static char ptclient_debug = 0;
struct db *ptsdb = NULL;
int service_init(int argc, char *argv[], char **envp __attribute__((unused)))
{
int r;
int opt;
char fnamebuf[1024];
extern char *optarg;
if (geteuid() == 0) fatal("must run as the Cyrus user", EC_USAGE);
setproctitle_init(argc, argv, envp);
/* set signal handlers */
signal(SIGPIPE, SIG_IGN);
syslog(LOG_NOTICE, "starting: $Id: ptloader.c,v 1.50 2010/01/06 17:01:58 murch Exp $");
while ((opt = getopt(argc, argv, "d:")) != EOF) {
switch (opt) {
case 'd':
ptclient_debug = atoi(optarg);
if (ptclient_debug < 1) {
ptclient_debug = 1;
}
break;
default:
syslog(LOG_ERR, "invalid command line option specified");
break;
/* just pass through */
}
}
strcpy(fnamebuf, config_dir);
strcat(fnamebuf, PTS_DBFIL);
r = cyrusdb_open(DB, fnamebuf, CYRUSDB_CREATE, &ptsdb);
if (r != 0) {
syslog(LOG_ERR, "DBERROR: opening %s: %s", fnamebuf,
cyrusdb_strerror(ret));
fatal("can't read pts database", EC_TEMPFAIL);
}
ptsmodule_init();
return 0;
}
/* Called by service API to shut down the service */
void service_abort(int error)
{
int r;
r = cyrusdb_close(ptsdb);
if (r) {
syslog(LOG_ERR, "DBERROR: error closing ptsdb: %s",
cyrusdb_strerror(r));
}
cyrusdb_done();
exit(error);
}
/* we're a 'threaded' service, but since we never fork or create any
threads, we're just one-person-at-a-time based */
int service_main_fd(int c, int argc __attribute__((unused)),
char **argv __attribute__((unused)),
char **envp __attribute__((unused)))
{
const char *reply = NULL;
char user[PTS_DB_KEYSIZE];
int rc, dsize;
size_t size;
struct auth_state *newstate;
(void)memset(&size, 0, sizeof(size));
if (read(c, &size, sizeof(size_t)) < 0) {
syslog(LOG_ERR, "socket (size): %m");
reply = "Error reading request (size)";
goto sendreply;
}
if (size > PTS_DB_KEYSIZE) {
syslog(LOG_ERR, "size sent %d is greater than buffer size %d",
(int)size, PTS_DB_KEYSIZE);
reply = "Error: invalid request size";
goto sendreply;
}
if (size == 0) {
syslog(LOG_ERR, "size sent is 0");
reply = "Error: zero request size";
goto sendreply;
}
memset(&user, 0, sizeof(user));
if (read(c, &user, size) < 0) {
syslog(LOG_ERR, "socket(user; size = %d): %m", (int)size);
reply = "Error reading request (user)";
goto sendreply;
}
if (ptclient_debug) {
syslog(LOG_DEBUG, "user %s", user);
}
newstate = ptsmodule_make_authstate(user, size, &reply, &dsize);
if(newstate) {
/* Success! */
rc = cyrusdb_store(ptsdb, user, size, (void *)newstate, dsize, NULL);
free(newstate);
/* and we're done */
reply = "OK";
} else {
/* Failure */
if ( reply == NULL ) {
reply = "Error making authstate";
}
}
sendreply:
if (retry_write(c, reply, strlen(reply) + 1) <0) {
syslog(LOG_WARNING, "retry_write: %m");
}
close(c);
return 0;
}
/* we need to have this function here 'cause libcyrus.la
* makes calls to this function.
*/
EXPORTED void fatal(const char *msg, int exitcode)
{
syslog(LOG_ERR, "%s", msg);
exit(exitcode);
}

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