[thirdparty/cups.git] / systemv / lppasswd.c

/*
 * "$Id: lppasswd.c 6649 2007-07-11 21:46:42Z mike $"
 *
 *   MD5 password program for the Common UNIX Printing System (CUPS).
 *
 *   Copyright 2007-2009 by Apple Inc.
 *   Copyright 1997-2006 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Apple Inc. and are protected by Federal copyright
 *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
 *   which should have been included with this file.  If this file is
 *   file is missing or damaged, see the license at "http://www.cups.org/".
 *
 * Contents:
 *
 *   main()  - Add, change, or delete passwords from the MD5 password file.
 *   usage() - Show program usage.
 */

/*
 * Include necessary headers...
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/stat.h>

#include <cups/string.h>
#include <cups/cups.h>
#include <cups/i18n.h>
#include <cups/md5.h>

#ifndef WIN32
#  include <unistd.h>
#  include <signal.h>
#endif /* !WIN32 */


/*
 * Operations...
 */

#define ADD	0
#define CHANGE	1
#define DELETE	2


/*
 * Local functions...
 */

static void	usage(FILE *fp);


/*
 * 'main()' - Add, change, or delete passwords from the MD5 password file.
 */

int					/* O - Exit status */
main(int  argc,				/* I - Number of command-line arguments */
     char *argv[])			/* I - Command-line arguments */
{
  int		i;			/* Looping var */
  char		*opt;			/* Option pointer */
  const char	*username;		/* Pointer to username */
  const char	*groupname;		/* Pointer to group name */
  int		op;			/* Operation (add, change, delete) */
  const char	*passwd;		/* Password string */
  FILE		*infile,		/* Input file */
		*outfile;		/* Output file */
  char		line[256],		/* Line from file */
		userline[17],		/* User from line */
		groupline[17],		/* Group from line */
		md5line[33],		/* MD5-sum from line */
		md5new[33];		/* New MD5 sum */
  const char	*root;			/* CUPS server root directory */
  char		passwdmd5[1024],	/* passwd.md5 file */
		passwdold[1024],	/* passwd.old file */
		passwdnew[1024];	/* passwd.tmp file */
  char		*newpass,		/* new password */
  		*oldpass;		/* old password */
  int		flag;			/* Password check flags... */
  int		fd;			/* Password file descriptor */
  int		error;			/* Write error */
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
  struct sigaction action;		/* Signal action */
#endif /* HAVE_SIGACTION && !HAVE_SIGSET*/


  _cupsSetLocale(argv);

 /*
  * Check to see if stdin, stdout, and stderr are still open...
  */

  if (fcntl(0, F_GETFD, &i) ||
      fcntl(1, F_GETFD, &i) ||
      fcntl(2, F_GETFD, &i))
  {
   /*
    * No, return exit status 2 and don't try to send any output since
    * someone is trying to bypass the security on the server.
    */

    return (2);
  }

 /*
  * Find the server directory...
  *
  * We use the CUPS_SERVERROOT environment variable when we are running
  * as root or when lppasswd is not setuid...
  */

  if ((root = getenv("CUPS_SERVERROOT")) == NULL ||
      (getuid() != geteuid() && getuid()))
    root = CUPS_SERVERROOT;

  snprintf(passwdmd5, sizeof(passwdmd5), "%s/passwd.md5", root);
  snprintf(passwdold, sizeof(passwdold), "%s/passwd.old", root);
  snprintf(passwdnew, sizeof(passwdnew), "%s/passwd.new", root);

 /*
  * Find the default system group...
  */

  if (getgrnam(CUPS_DEFAULT_GROUP))
    groupname = CUPS_DEFAULT_GROUP;
  else
    groupname = "unknown";

  endgrent();

  username = NULL;
  op       = CHANGE;

 /*
  * Parse command-line options...
  */

  for (i = 1; i < argc; i ++)
    if (argv[i][0] == '-')
      for (opt = argv[i] + 1; *opt; opt ++)
        switch (*opt)
	{
	  case 'a' : /* Add */
	      op = ADD;
	      break;
	  case 'x' : /* Delete */
	      op = DELETE;
	      break;
	  case 'g' : /* Group */
	      i ++;
	      if (i >= argc)
	        usage(stderr);

              groupname = argv[i];
	      break;
	  case 'h' : /* Help */
	      usage(stdout);
	      break;
	  default : /* Bad option */
	      usage(stderr);
	      break;
	}
    else if (!username)
      username = argv[i];
    else
      usage(stderr);

 /*
  * See if we are trying to add or delete a password when we aren't logged in
  * as root...
  */

  if (getuid() && getuid() != geteuid() && (op != CHANGE || username))
  {
    _cupsLangPuts(stderr,
                  _("lppasswd: Only root can add or delete passwords\n"));
    return (1);
  }

 /*
  * Fill in missing info...
  */

  if (!username)
    username = cupsUser();

  oldpass = newpass = NULL;

 /*
  * Obtain old and new password _before_ locking the database
  * to keep users from locking the file indefinitely.
  */

  if (op == CHANGE && getuid())
  {
    if ((passwd = cupsGetPassword(_("Enter old password:"))) == NULL)
      return (1);

    if ((oldpass = strdup(passwd)) == NULL)
    {
      _cupsLangPrintf(stderr,
                      _("lppasswd: Unable to copy password string: %s\n"),
		      strerror(errno));
      return (1);
    }
  }

 /*
  * Now get the new password, if necessary...
  */

  if (op != DELETE)
  {
    if ((passwd = cupsGetPassword(_("Enter password:"))) == NULL)
      return (1);

    if ((newpass = strdup(passwd)) == NULL)
    {
      _cupsLangPrintf(stderr,
                      _("lppasswd: Unable to copy password string: %s\n"),
		      strerror(errno));
      return (1);
    }

    if ((passwd = cupsGetPassword(_("Enter password again:"))) == NULL)
      return (1);

    if (strcmp(passwd, newpass) != 0)
    {
      _cupsLangPuts(stderr,
                    _("lppasswd: Sorry, passwords don't match\n"));
      return (1);
    }

   /*
    * Check that the password contains at least one letter and number.
    */

    flag = 0;

    for (passwd = newpass; *passwd; passwd ++)
      if (isdigit(*passwd & 255))
	flag |= 1;
      else if (isalpha(*passwd & 255))
	flag |= 2;

   /*
    * Only allow passwords that are at least 6 chars, have a letter and
    * a number, and don't contain the username.
    */

    if (strlen(newpass) < 6 || strstr(newpass, username) != NULL || flag != 3)
    {
      _cupsLangPuts(stderr,
                    _("lppasswd: Sorry, password rejected.\n"
		      "Your password must be at least 6 characters long, "
		      "cannot contain\n"
		      "your username, and must contain at least one letter "
		      "and number.\n"));
      return (1);
    }
  }

 /*
  * Ignore SIGHUP, SIGINT, SIGTERM, and SIGXFSZ (if defined) for the
  * remainder of the time so that we won't end up with bogus password
  * files...
  */

#ifndef WIN32
#  if defined(HAVE_SIGSET)
  sigset(SIGHUP, SIG_IGN);
  sigset(SIGINT, SIG_IGN);
  sigset(SIGTERM, SIG_IGN);
#    ifdef SIGXFSZ
  sigset(SIGXFSZ, SIG_IGN);
#    endif /* SIGXFSZ */
#  elif defined(HAVE_SIGACTION)
  memset(&action, 0, sizeof(action));
  action.sa_handler = SIG_IGN;

  sigaction(SIGHUP, &action, NULL);
  sigaction(SIGINT, &action, NULL);
  sigaction(SIGTERM, &action, NULL);
#    ifdef SIGXFSZ
  sigaction(SIGXFSZ, &action, NULL);
#    endif /* SIGXFSZ */
#  else
  signal(SIGHUP, SIG_IGN);
  signal(SIGINT, SIG_IGN);
  signal(SIGTERM, SIG_IGN);
#    ifdef SIGXFSZ
  signal(SIGXFSZ, SIG_IGN);
#    endif /* SIGXFSZ */
#  endif
#endif /* !WIN32 */

 /*
  * Open the output file.
  */

  if ((fd = open(passwdnew, O_WRONLY | O_CREAT | O_EXCL, 0400)) < 0)
  {
    if (errno == EEXIST)
      _cupsLangPuts(stderr, _("lppasswd: Password file busy\n"));
    else
      _cupsLangPrintf(stderr,
                      _("lppasswd: Unable to open password file: %s\n"),
		      strerror(errno));

    return (1);
  }

  if ((outfile = fdopen(fd, "w")) == NULL)
  {
    _cupsLangPrintf(stderr,
                    _("lppasswd: Unable to open password file: %s\n"),
		    strerror(errno));

    unlink(passwdnew);

    return (1);
  }

  setbuf(outfile, NULL);

 /*
  * Open the existing password file and create a new one...
  */

  infile = fopen(passwdmd5, "r");
  if (infile == NULL && errno != ENOENT && op != ADD)
  {
    _cupsLangPrintf(stderr,
                    _("lppasswd: Unable to open password file: %s\n"),
		    strerror(errno));

    fclose(outfile);

    unlink(passwdnew);

    return (1);
  }

 /*
  * Read lines from the password file; the format is:
  *
  *   username:group:MD5-sum
  */

  error        = 0;
  userline[0]  = '\0';
  groupline[0] = '\0';
  md5line[0]   = '\0';

  if (infile)
  {
    while (fgets(line, sizeof(line), infile) != NULL)
    {
      if (sscanf(line, "%16[^:]:%16[^:]:%32s", userline, groupline, md5line) != 3)
        continue;

      if (strcmp(username, userline) == 0 &&
          strcmp(groupname, groupline) == 0)
	break;

      if (fputs(line, outfile) == EOF)
      {
	_cupsLangPrintf(stderr,
                	_("lppasswd: Unable to write to password file: %s\n"),
			strerror(errno));
        error = 1;
	break;
      }
    }

    if (!error)
    {
      while (fgets(line, sizeof(line), infile) != NULL)
	if (fputs(line, outfile) == EOF)
	{
	  _cupsLangPrintf(stderr,
                	  _("lppasswd: Unable to write to password file: %s\n"),
			  strerror(errno));
	  error = 1;
	  break;
	}
    }
  }

  if (op == CHANGE &&
      (strcmp(username, userline) || strcmp(groupname, groupline)))
  {
    _cupsLangPrintf(stderr,
                    _("lppasswd: user \"%s\" and group \"%s\" do not exist.\n"),
        	    username, groupname);
    error = 1;
  }
  else if (op != DELETE)
  {
    if (oldpass &&
        strcmp(httpMD5(username, "CUPS", oldpass, md5new), md5line) != 0)
    {
      _cupsLangPuts(stderr,
                    _("lppasswd: Sorry, password doesn't match\n"));
      error = 1;
    }
    else
    {
      snprintf(line, sizeof(line), "%s:%s:%s\n", username, groupname,
               httpMD5(username, "CUPS", newpass, md5new));
      if (fputs(line, outfile) == EOF)
      {
	_cupsLangPrintf(stderr,
                	_("lppasswd: Unable to write to password file: %s\n"),
			strerror(errno));
        error = 1;
      }
    }
  }

 /*
  * Close the files...
  */

  if (infile)
    fclose(infile);

  if (fclose(outfile) == EOF)
    error = 1;

 /*
  * Error out gracefully as needed...
  */

  if (error)
  {
    _cupsLangPuts(stderr, _("lppasswd: Password file not updated\n"));
    
    unlink(passwdnew);

    return (1);
  }

 /*
  * Save old passwd file
  */

  unlink(passwdold);
  if (link(passwdmd5, passwdold) && errno != ENOENT)
  {
    _cupsLangPrintf(stderr,
                    _("lppasswd: failed to backup old password file: %s\n"),
		    strerror(errno));
    unlink(passwdnew);
    return (1);
  }

 /*
  * Install new password file
  */

  if (rename(passwdnew, passwdmd5) < 0)
  {
    _cupsLangPrintf(stderr,
                    _("lppasswd: failed to rename password file: %s\n"),
		    strerror(errno));
    unlink(passwdnew);
    return (1);
  }

  return (0);
}


/*
 * 'usage()' - Show program usage.
 */

static void
usage(FILE *fp)		/* I - File to send usage to */
{
  if (getuid())
    _cupsLangPuts(fp, _("Usage: lppasswd [-g groupname]\n"));
  else
    _cupsLangPuts(fp, 
                  _("Usage: lppasswd [-g groupname] [username]\n"
		    "       lppasswd [-g groupname] -a [username]\n"
		    "       lppasswd [-g groupname] -x [username]\n"));

  exit(1);
}


/*
 * End of "$Id: lppasswd.c 6649 2007-07-11 21:46:42Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
bc44d920	2	* "$Id: lppasswd.c 6649 2007-07-11 21:46:42Z mike $"
ef416fc2	3	*
	4	* MD5 password program for the Common UNIX Printing System (CUPS).
	5	*
4d301e69	6	* Copyright 2007-2009 by Apple Inc.
ef416fc2	7	* Copyright 1997-2006 by Easy Software Products.
	8	*
	9	* These coded instructions, statements, and computer programs are the
bc44d920	10	* property of Apple Inc. and are protected by Federal copyright
	11	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	12	* which should have been included with this file. If this file is
	13	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	14	*
	15	* Contents:
	16	*
	17	* main() - Add, change, or delete passwords from the MD5 password file.
	18	* usage() - Show program usage.
	19	*/
	20
	21	/*
	22	* Include necessary headers...
	23	*/
	24
	25	#include <stdio.h>
	26	#include <stdlib.h>
	27	#include <errno.h>
	28	#include <ctype.h>
	29	#include <fcntl.h>
	30	#include <grp.h>
	31	#include <sys/types.h>
	32	#include <sys/stat.h>
	33
	34	#include <cups/string.h>
	35	#include <cups/cups.h>
	36	#include <cups/i18n.h>
	37	#include <cups/md5.h>
	38
	39	#ifndef WIN32
	40	# include <unistd.h>
	41	# include <signal.h>
	42	#endif /* !WIN32 */
	43
	44
	45	/*
	46	* Operations...
	47	*/
	48
	49	#define ADD 0
	50	#define CHANGE 1
	51	#define DELETE 2
	52
	53
	54	/*
	55	* Local functions...
	56	*/
	57
	58	static void usage(FILE *fp);
	59
	60
	61	/*
	62	* 'main()' - Add, change, or delete passwords from the MD5 password file.
	63	*/
	64
	65	int /* O - Exit status */
	66	main(int argc, /* I - Number of command-line arguments */
	67	char argv[]) / I - Command-line arguments */
	68	{
	69	int i; /* Looping var */
	70	char opt; / Option pointer */
	71	const char username; / Pointer to username */
	72	const char groupname; / Pointer to group name */
	73	int op; /* Operation (add, change, delete) */
	74	const char passwd; / Password string */
	75	FILE infile, / Input file */
	76	outfile; / Output file */
	77	char line[256], /* Line from file */
78	userline[17], /* User from line */
79	groupline[17], /* Group from line */
80	md5line[33], /* MD5-sum from line */
81	md5new[33]; /* New MD5 sum */
82	const char root; / CUPS server root directory */
83	char passwdmd5[1024], /* passwd.md5 file */
84	passwdold[1024], /* passwd.old file */
85	passwdnew[1024]; /* passwd.tmp file */
86	char newpass, / new password */
87	oldpass; / old password */
88	int flag; /* Password check flags... */
89	int fd; /* Password file descriptor */
90	int error; /* Write error */
91	#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
92	struct sigaction action; /* Signal action */
93	#endif /* HAVE_SIGACTION && !HAVE_SIGSET*/
94
95
07725fee	96	_cupsSetLocale(argv);
d09495fa	97
ef416fc2	98	/*
	99	* Check to see if stdin, stdout, and stderr are still open...
	100	*/
	101
	102	if (fcntl(0, F_GETFD, &i) \|\|
	103	fcntl(1, F_GETFD, &i) \|\|
	104	fcntl(2, F_GETFD, &i))
	105	{
	106	/*
	107	* No, return exit status 2 and don't try to send any output since
	108	* someone is trying to bypass the security on the server.
	109	*/
	110
	111	return (2);
	112	}
	113
	114	/*
	115	* Find the server directory...
	116	*
	117	* We use the CUPS_SERVERROOT environment variable when we are running
	118	* as root or when lppasswd is not setuid...
	119	*/
	120
	121	if ((root = getenv("CUPS_SERVERROOT")) == NULL \|\|
	122	(getuid() != geteuid() && getuid()))
	123	root = CUPS_SERVERROOT;
	124
	125	snprintf(passwdmd5, sizeof(passwdmd5), "%s/passwd.md5", root);
	126	snprintf(passwdold, sizeof(passwdold), "%s/passwd.old", root);
	127	snprintf(passwdnew, sizeof(passwdnew), "%s/passwd.new", root);
	128
	129	/*
	130	* Find the default system group...
	131	*/
	132
	133	if (getgrnam(CUPS_DEFAULT_GROUP))
	134	groupname = CUPS_DEFAULT_GROUP;
	135	else
	136	groupname = "unknown";
	137
	138	endgrent();
	139
	140	username = NULL;
	141	op = CHANGE;
	142
	143	/*
	144	* Parse command-line options...
	145	*/
	146
	147	for (i = 1; i < argc; i ++)
	148	if (argv[i][0] == '-')
	149	for (opt = argv[i] + 1; *opt; opt ++)
	150	switch (*opt)
	151	{
	152	case 'a' : /* Add */
	153	op = ADD;
	154	break;
	155	case 'x' : /* Delete */
	156	op = DELETE;
	157	break;
	158	case 'g' : /* Group */
	159	i ++;
	160	if (i >= argc)
	161	usage(stderr);
162
163	groupname = argv[i];
164	break;
165	case 'h' : /* Help */
166	usage(stdout);
167	break;
168	default : /* Bad option */
169	usage(stderr);
170	break;
171	}
172	else if (!username)
173	username = argv[i];
174	else
175	usage(stderr);
176
177	/*
178	* See if we are trying to add or delete a password when we aren't logged in
179	* as root...
180	*/
181
182	if (getuid() && getuid() != geteuid() && (op != CHANGE \|\| username))
183	{
fa73b229	184	_cupsLangPuts(stderr,
4d301e69	185	_("lppasswd: Only root can add or delete passwords\n"));
ef416fc2	186	return (1);
	187	}
	188
	189	/*
	190	* Fill in missing info...
	191	*/
	192
	193	if (!username)
	194	username = cupsUser();
	195
	196	oldpass = newpass = NULL;
	197
	198	/*
	199	* Obtain old and new password _before_ locking the database
	200	* to keep users from locking the file indefinitely.
	201	*/
	202
	203	if (op == CHANGE && getuid())
	204	{
	205	if ((passwd = cupsGetPassword(_("Enter old password:"))) == NULL)
	206	return (1);
	207
	208	if ((oldpass = strdup(passwd)) == NULL)
	209	{
fa73b229	210	_cupsLangPrintf(stderr,
ef416fc2	211	_("lppasswd: Unable to copy password string: %s\n"),
	212	strerror(errno));
	213	return (1);
	214	}
	215	}
	216
	217	/*
	218	* Now get the new password, if necessary...
	219	*/
	220
	221	if (op != DELETE)
	222	{
	223	if ((passwd = cupsGetPassword(_("Enter password:"))) == NULL)
	224	return (1);
	225
	226	if ((newpass = strdup(passwd)) == NULL)
	227	{
fa73b229	228	_cupsLangPrintf(stderr,
ef416fc2	229	_("lppasswd: Unable to copy password string: %s\n"),
	230	strerror(errno));
	231	return (1);
	232	}
	233
	234	if ((passwd = cupsGetPassword(_("Enter password again:"))) == NULL)
	235	return (1);
	236
	237	if (strcmp(passwd, newpass) != 0)
	238	{
fa73b229	239	_cupsLangPuts(stderr,
4d301e69	240	_("lppasswd: Sorry, passwords don't match\n"));
ef416fc2	241	return (1);
	242	}
	243
	244	/*
	245	* Check that the password contains at least one letter and number.
	246	*/
	247
	248	flag = 0;
	249
	250	for (passwd = newpass; *passwd; passwd ++)
	251	if (isdigit(*passwd & 255))
	252	flag \|= 1;
	253	else if (isalpha(*passwd & 255))
	254	flag \|= 2;
	255
	256	/*
	257	* Only allow passwords that are at least 6 chars, have a letter and
	258	* a number, and don't contain the username.
	259	*/
	260
	261	if (strlen(newpass) < 6 \|\| strstr(newpass, username) != NULL \|\| flag != 3)
	262	{
fa73b229	263	_cupsLangPuts(stderr,
ef416fc2	264	_("lppasswd: Sorry, password rejected.\n"
	265	"Your password must be at least 6 characters long, "
	266	"cannot contain\n"
	267	"your username, and must contain at least one letter "
	268	"and number.\n"));
	269	return (1);
	270	}
	271	}
	272
	273	/*
	274	* Ignore SIGHUP, SIGINT, SIGTERM, and SIGXFSZ (if defined) for the
	275	* remainder of the time so that we won't end up with bogus password
	276	* files...
	277	*/
	278
	279	#ifndef WIN32
	280	# if defined(HAVE_SIGSET)
	281	sigset(SIGHUP, SIG_IGN);
	282	sigset(SIGINT, SIG_IGN);
	283	sigset(SIGTERM, SIG_IGN);
	284	# ifdef SIGXFSZ
	285	sigset(SIGXFSZ, SIG_IGN);
	286	# endif /* SIGXFSZ */
	287	# elif defined(HAVE_SIGACTION)
	288	memset(&action, 0, sizeof(action));
	289	action.sa_handler = SIG_IGN;
	290
	291	sigaction(SIGHUP, &action, NULL);
	292	sigaction(SIGINT, &action, NULL);
	293	sigaction(SIGTERM, &action, NULL);
	294	# ifdef SIGXFSZ
	295	sigaction(SIGXFSZ, &action, NULL);
	296	# endif /* SIGXFSZ */
	297	# else
	298	signal(SIGHUP, SIG_IGN);
	299	signal(SIGINT, SIG_IGN);
	300	signal(SIGTERM, SIG_IGN);
	301	# ifdef SIGXFSZ
	302	signal(SIGXFSZ, SIG_IGN);
	303	# endif /* SIGXFSZ */
	304	# endif
	305	#endif /* !WIN32 */
	306
	307	/*
	308	* Open the output file.
	309	*/
	310
	311	if ((fd = open(passwdnew, O_WRONLY \| O_CREAT \| O_EXCL, 0400)) < 0)
	312	{
	313	if (errno == EEXIST)
4d301e69	314	_cupsLangPuts(stderr, _("lppasswd: Password file busy\n"));
ef416fc2	315	else
fa73b229	316	_cupsLangPrintf(stderr,
ef416fc2	317	_("lppasswd: Unable to open password file: %s\n"),
	318	strerror(errno));
	319
	320	return (1);
	321	}
	322
	323	if ((outfile = fdopen(fd, "w")) == NULL)
	324	{
fa73b229	325	_cupsLangPrintf(stderr,
ef416fc2	326	_("lppasswd: Unable to open password file: %s\n"),
	327	strerror(errno));
	328
	329	unlink(passwdnew);
	330
	331	return (1);
	332	}
	333
	334	setbuf(outfile, NULL);
	335
	336	/*
	337	* Open the existing password file and create a new one...
	338	*/
	339
	340	infile = fopen(passwdmd5, "r");
	341	if (infile == NULL && errno != ENOENT && op != ADD)
	342	{
fa73b229	343	_cupsLangPrintf(stderr,
ef416fc2	344	_("lppasswd: Unable to open password file: %s\n"),
	345	strerror(errno));
	346
	347	fclose(outfile);
	348
	349	unlink(passwdnew);
	350
	351	return (1);
	352	}
	353
	354	/*
	355	* Read lines from the password file; the format is:
	356	*
	357	* username:group:MD5-sum
	358	*/
	359
	360	error = 0;
	361	userline[0] = '\0';
	362	groupline[0] = '\0';
	363	md5line[0] = '\0';
	364
	365	if (infile)
	366	{
	367	while (fgets(line, sizeof(line), infile) != NULL)
	368	{
	369	if (sscanf(line, "%16[^:]:%16[^:]:%32s", userline, groupline, md5line) != 3)
	370	continue;
	371
	372	if (strcmp(username, userline) == 0 &&
	373	strcmp(groupname, groupline) == 0)
	374	break;
	375
	376	if (fputs(line, outfile) == EOF)
	377	{
fa73b229	378	_cupsLangPrintf(stderr,
ef416fc2	379	_("lppasswd: Unable to write to password file: %s\n"),
	380	strerror(errno));
	381	error = 1;
	382	break;
	383	}
	384	}
	385
	386	if (!error)
	387	{
	388	while (fgets(line, sizeof(line), infile) != NULL)
	389	if (fputs(line, outfile) == EOF)
	390	{
fa73b229	391	_cupsLangPrintf(stderr,
ef416fc2	392	_("lppasswd: Unable to write to password file: %s\n"),
	393	strerror(errno));
	394	error = 1;
	395	break;
	396	}
	397	}
	398	}
	399
	400	if (op == CHANGE &&
	401	(strcmp(username, userline) \|\| strcmp(groupname, groupline)))
	402	{
fa73b229	403	_cupsLangPrintf(stderr,
ef416fc2	404	_("lppasswd: user \"%s\" and group \"%s\" do not exist.\n"),
	405	username, groupname);
	406	error = 1;
	407	}
	408	else if (op != DELETE)
	409	{
	410	if (oldpass &&
	411	strcmp(httpMD5(username, "CUPS", oldpass, md5new), md5line) != 0)
	412	{
fa73b229	413	_cupsLangPuts(stderr,
4d301e69	414	_("lppasswd: Sorry, password doesn't match\n"));
ef416fc2	415	error = 1;
	416	}
	417	else
	418	{
	419	snprintf(line, sizeof(line), "%s:%s:%s\n", username, groupname,
	420	httpMD5(username, "CUPS", newpass, md5new));
	421	if (fputs(line, outfile) == EOF)
	422	{
fa73b229	423	_cupsLangPrintf(stderr,
ef416fc2	424	_("lppasswd: Unable to write to password file: %s\n"),
	425	strerror(errno));
	426	error = 1;
	427	}
	428	}
	429	}
	430
	431	/*
	432	* Close the files...
	433	*/
	434
	435	if (infile)
	436	fclose(infile);
	437
	438	if (fclose(outfile) == EOF)
	439	error = 1;
	440
	441	/*
	442	* Error out gracefully as needed...
	443	*/
	444
	445	if (error)
	446	{
4d301e69	447	_cupsLangPuts(stderr, _("lppasswd: Password file not updated\n"));
ef416fc2	448
	449	unlink(passwdnew);
	450
	451	return (1);
	452	}
	453
	454	/*
	455	* Save old passwd file
	456	*/
	457
	458	unlink(passwdold);
	459	if (link(passwdmd5, passwdold) && errno != ENOENT)
	460	{
fa73b229	461	_cupsLangPrintf(stderr,
ef416fc2	462	_("lppasswd: failed to backup old password file: %s\n"),
	463	strerror(errno));
	464	unlink(passwdnew);
	465	return (1);
	466	}
	467
	468	/*
	469	* Install new password file
	470	*/
	471
	472	if (rename(passwdnew, passwdmd5) < 0)
	473	{
fa73b229	474	_cupsLangPrintf(stderr,
ef416fc2	475	_("lppasswd: failed to rename password file: %s\n"),
	476	strerror(errno));
	477	unlink(passwdnew);
	478	return (1);
	479	}
	480
	481	return (0);
	482	}
	483
	484
	485	/*
	486	* 'usage()' - Show program usage.
	487	*/
	488
	489	static void
	490	usage(FILE fp) / I - File to send usage to */
	491	{
	492	if (getuid())
fa73b229	493	_cupsLangPuts(fp, _("Usage: lppasswd [-g groupname]\n"));
ef416fc2	494	else
fa73b229	495	_cupsLangPuts(fp,
ef416fc2	496	_("Usage: lppasswd [-g groupname] [username]\n"
	497	" lppasswd [-g groupname] -a [username]\n"
	498	" lppasswd [-g groupname] -x [username]\n"));
ef416fc2	499
	500	exit(1);
	501	}
	502
	503
	504	/*
bc44d920	505	* End of "$Id: lppasswd.c 6649 2007-07-11 21:46:42Z mike $".
ef416fc2	506	*/