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/*
** Copyright 2000-2004 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "auth.h"
#include "authmod.h"
#include "authstaticlist.h"
#include "authsasl.h"
#include "authwait.h"
#include "debug.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/select.h>
#include "numlib/numlib.h"
#include "authchangepwdir.h"
static const char rcsid[]="$Id: authdaemon.c,v 1.12 2004/04/18 15:54:38 mrsam Exp $";
extern int authdaemondo(const char *authreq,
int (*func)(struct authinfo *, void *), void *arg);
struct authdaemon_info {
char *username;
void (*callback_func)(struct authinfo *, void *);
void *callback_arg;
} ;
extern void auth_daemon_enumerate( void(*cb_func)(const char *name,
uid_t uid,
gid_t gid,
const char *homedir,
const char *maildir,
void *void_arg),
void *void_arg);
static int callback(struct authinfo *a, void *p)
{
struct authdaemon_info *ai=(struct authdaemon_info *)p;
if ((ai->username=strdup(a->address)) == 0)
{
perror("authdaemon: malloc");
return (1);
}
{
static char *prevp=0;
const char *cp=a->maildir;
char *p;
if (!cp) cp="";
p=malloc(sizeof("MAILDIR=")+strlen(cp));
if (!p)
{
perror("authdaemon: malloc");
free(ai->username);
return (1);
}
strcat(strcpy(p, "MAILDIR="), cp);
putenv(p);
if (prevp) free(prevp);
prevp=p;
}
{
static char *prevp=0;
const char *cp=a->options;
char *p;
if (!cp) cp="";
p=malloc(sizeof("OPTIONS=")+strlen(cp));
if (!p)
{
perror("authdaemon: malloc");
free(ai->username);
return (1);
}
strcat(strcpy(p, "OPTIONS="), cp);
putenv(p);
if (prevp) free(prevp);
prevp=p;
}
if (a->sysusername && a->sysuserid)
a->sysusername=0;
if (ai->callback_func == 0)
authsuccess(a->homedir, a->sysusername, a->sysuserid,
&a->sysgroupid, a->address, a->fullname);
else
{
if (!a->address)
a->address=a->sysusername;
(*ai->callback_func)(a, ai->callback_arg);
}
return (0);
}
char *auth_daemon(const char *service, const char *authtype, char *authdata,
int issession,
void (*callback_func)(struct authinfo *, void *), void *callback_arg)
{
char tbuf[NUMBUFSIZE];
size_t l=strlen(service)+strlen(authtype)+strlen(authdata)+1;
char *n=libmail_str_size_t(l, tbuf);
char *buf=malloc(strlen(n)+l+20);
int rc;
struct authdaemon_info ai;
if (!buf)
{
perror("authdaemon: malloc");
errno=EACCES;
return (0);
}
strcat(strcat(strcpy(buf, "AUTH "), n), "\n");
strcat(strcat(buf, service), "\n");
strcat(strcat(buf, authtype), "\n");
strcat(buf, authdata);
ai.username=NULL;
ai.callback_func=callback_func;
ai.callback_arg=callback_arg;
rc=authdaemondo(buf, callback, &ai);
free(buf);
if (auth_debug_login_level)
{
struct timeval t;
/* short delay to try and allow authdaemond's courierlogger
to finish writing; otherwise items can appear out of order */
t.tv_sec = 0;
t.tv_usec = 100000;
select(0, 0, 0, 0, &t);
}
if (rc < 0)
{
errno=EPERM;
return (0);
}
if (rc > 0)
{
errno=EACCES;
return (0);
}
return (ai.username);
}
extern int auth_daemon_pre(const char *uid, const char *service,
int (*callback)(struct authinfo *, void *),
void *arg);
extern void auth_daemon_cleanup();
#define PROG AUTHCHANGEPWDIR "/authdaemon.passwd"
static int auth_daemon_passwd(const char *service,
const char *uid,
const char *opwd,
const char *npwd)
{
pid_t p, p2;
int waitstat;
int pipefd[2];
FILE *fp;
signal(SIGCHLD, SIG_DFL);
signal(SIGPIPE, SIG_IGN);
if (pipe(pipefd) < 0)
{
perror("CRIT: authdaemon: pipe() failed");
errno=EINVAL;
return (-1);
}
p=fork();
if (p == 0)
{
char *argv[2];
argv[0]=PROG;
argv[1]=0;
close(0);
dup(pipefd[0]);
close(pipefd[0]);
close(pipefd[1]);
execv(argv[0], argv);
perror("CRIT: authdaemon: failed to execute " PROG);
exit(1);
}
close(pipefd[0]);
if ((fp=fdopen(pipefd[1], "w")) != 0)
{
fprintf(fp, "%s\t%s\t%s\t%s\n",
service, uid, opwd, npwd);
fclose(fp);
}
close(pipefd[1]);
while ((p2=wait(&waitstat)) != p)
{
if (p2 < 0 && errno == ECHILD)
{
perror("CRIT: authdaemon: wait() failed");
errno=EPERM;
return (-1);
}
}
if (WIFEXITED(waitstat) && WEXITSTATUS(waitstat) == 0)
return (0);
errno=EPERM;
return (-1);
}
struct authstaticinfo authdaemon_info={
"authdaemon",
auth_daemon,
auth_daemon_pre,
auth_daemon_cleanup,
auth_daemon_passwd,
NULL,
auth_daemon_enumerate};
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