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#include "config.h"
/*
** Copyright 2000-2006 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "auth.h"
#include <courierauth.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 "htmllibdir.h"
#include "numlib/numlib.h"
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifndef WEXITSTATUS
#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
#endif
#ifndef WIFEXITED
#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
#endif
static int badstr(const char *p)
{
while (p && *p)
{
if ((int)(unsigned char)*p < ' ')
return 1;
++p;
}
return 0;
}
int changepw(const char *service,
const char *uid,
const char *opwd,
const char *npwd)
{
pid_t p, p2;
int waitstat;
int pipefd[2];
FILE *fp;
if (badstr(uid) || badstr(opwd) || badstr(npwd))
{
errno=EINVAL;
return -1;
}
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]=SQWEBPASSWD;
argv[1]=0;
dup2(pipefd[0], 0);
close(pipefd[0]);
close(pipefd[1]);
execv(argv[0], argv);
perror("CRIT: failed to execute " SQWEBPASSWD);
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);
}
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