[thirdparty/cups.git] / scheduler / cert.c

/*
 * "$Id$"
 *
 * Authentication certificate routines for the CUPS scheduler.
 *
 * Copyright 2007-2014 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/".
 */

/*
 * Include necessary headers...
 */

#include "cupsd.h"
#ifdef HAVE_ACL_INIT
#  include <sys/acl.h>
#  ifdef HAVE_MEMBERSHIP_H
#    include <membership.h>
#  endif /* HAVE_MEMBERSHIP_H */
#endif /* HAVE_ACL_INIT */


/*
 * 'cupsdAddCert()' - Add a certificate.
 */

void
cupsdAddCert(int        pid,		/* I - Process ID */
             const char *username,	/* I - Username */
             int        type)		/* I - AuthType for username */
{
  int		i;			/* Looping var */
  cupsd_cert_t	*cert;			/* Current certificate */
  int		fd;			/* Certificate file */
  char		filename[1024];		/* Certificate filename */
  static const char hex[] = "0123456789ABCDEF";
					/* Hex constants... */


  cupsdLogMessage(CUPSD_LOG_DEBUG2,
                  "cupsdAddCert: Adding certificate for PID %d", pid);

 /*
  * Allocate memory for the certificate...
  */

  if ((cert = calloc(sizeof(cupsd_cert_t), 1)) == NULL)
    return;

 /*
  * Fill in the certificate information...
  */

  cert->pid  = pid;
  cert->type = type;
  strlcpy(cert->username, username, sizeof(cert->username));

  for (i = 0; i < 32; i ++)
    cert->certificate[i] = hex[CUPS_RAND() & 15];

 /*
  * Save the certificate to a file readable only by the User and Group
  * (or root and SystemGroup for PID == 0)...
  */

  snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
  unlink(filename);

  if ((fd = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0400)) < 0)
  {
    cupsdLogMessage(CUPSD_LOG_ERROR,
                    "Unable to create certificate file %s - %s",
                    filename, strerror(errno));
    free(cert);
    return;
  }

  if (pid == 0)
  {
#ifdef HAVE_ACL_INIT
    acl_t		acl;		/* ACL information */
    acl_entry_t		entry;		/* ACL entry */
    acl_permset_t	permset;	/* Permissions */
#  ifdef HAVE_MBR_UID_TO_UUID
    uuid_t		group;		/* Group ID */
#  endif /* HAVE_MBR_UID_TO_UUID */
    static int		acls_not_supported = 0;
					/* Only warn once */
#endif /* HAVE_ACL_INIT */


   /*
    * Root certificate...
    */

    fchmod(fd, 0440);
    fchown(fd, RunUser, SystemGroupIDs[0]);

    cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddCert: NumSystemGroups=%d",
                    NumSystemGroups);

#ifdef HAVE_ACL_INIT
    if (NumSystemGroups > 1)
    {
     /*
      * Set POSIX ACLs for the root certificate so that all system
      * groups can access it...
      */

      int	j;			/* Looping var */

#  ifdef HAVE_MBR_UID_TO_UUID
     /*
      * On MacOS X, ACLs use UUIDs instead of GIDs...
      */

      acl = acl_init(NumSystemGroups - 1);

      for (i = 1; i < NumSystemGroups; i ++)
      {
       /*
        * Add each group ID to the ACL...
	*/

        for (j = 0; j < i; j ++)
	  if (SystemGroupIDs[j] == SystemGroupIDs[i])
            break;

        if (j < i)
          continue;			/* Skip duplicate groups */

        acl_create_entry(&acl, &entry);
	acl_get_permset(entry, &permset);
	acl_add_perm(permset, ACL_READ_DATA);
	acl_set_tag_type(entry, ACL_EXTENDED_ALLOW);
	mbr_gid_to_uuid((gid_t)SystemGroupIDs[i], group);
	acl_set_qualifier(entry, &group);
	acl_set_permset(entry, permset);
      }

#  else
     /*
      * POSIX ACLs need permissions for owner, group, other, and mask
      * in addition to the rest of the system groups...
      */

      acl = acl_init(NumSystemGroups + 3);

      /* Owner */
      acl_create_entry(&acl, &entry);
      acl_get_permset(entry, &permset);
      acl_add_perm(permset, ACL_READ);
      acl_set_tag_type(entry, ACL_USER_OBJ);
      acl_set_permset(entry, permset);

      /* Group */
      acl_create_entry(&acl, &entry);
      acl_get_permset(entry, &permset);
      acl_add_perm(permset, ACL_READ);
      acl_set_tag_type(entry, ACL_GROUP_OBJ);
      acl_set_permset(entry, permset);

      /* Others */
      acl_create_entry(&acl, &entry);
      acl_get_permset(entry, &permset);
      acl_add_perm(permset, 0);
      acl_set_tag_type(entry, ACL_OTHER);
      acl_set_permset(entry, permset);

      /* Mask */
      acl_create_entry(&acl, &entry);
      acl_get_permset(entry, &permset);
      acl_add_perm(permset, ACL_READ);
      acl_set_tag_type(entry, ACL_MASK);
      acl_set_permset(entry, permset);

      for (i = 1; i < NumSystemGroups; i ++)
      {
       /*
        * Add each group ID to the ACL...
	*/

        for (j = 0; j < i; j ++)
	  if (SystemGroupIDs[j] == SystemGroupIDs[i])
            break;

        if (j < i)
          continue;			/* Skip duplicate groups */

        acl_create_entry(&acl, &entry);
	acl_get_permset(entry, &permset);
	acl_add_perm(permset, ACL_READ);
	acl_set_tag_type(entry, ACL_GROUP);
	acl_set_qualifier(entry, SystemGroupIDs + i);
	acl_set_permset(entry, permset);
      }

      if (acl_valid(acl))
      {
        char *text, *textptr;		/* Temporary string */

        cupsdLogMessage(CUPSD_LOG_ERROR, "ACL did not validate: %s",
	                strerror(errno));
        text = acl_to_text(acl, NULL);
	for (textptr = strchr(text, '\n');
	     textptr;
	     textptr = strchr(textptr + 1, '\n'))
	  *textptr = ',';

	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL: %s", text);
	acl_free(text);
      }
#  endif /* HAVE_MBR_UID_TO_UUID */

      if (acl_set_fd(fd, acl))
      {
	if (errno != EOPNOTSUPP || !acls_not_supported)
	  cupsdLogMessage(CUPSD_LOG_ERROR,
			  "Unable to set ACLs on root certificate \"%s\" - %s",
			  filename, strerror(errno));

	if (errno == EOPNOTSUPP)
	  acls_not_supported = 1;
      }

      acl_free(acl);
    }
#endif /* HAVE_ACL_INIT */

    RootCertTime = time(NULL);
  }
  else
  {
   /*
    * CGI certificate...
    */

    fchmod(fd, 0400);
    fchown(fd, User, Group);
  }

  DEBUG_printf(("ADD pid=%d, username=%s, cert=%s\n", pid, username,
                cert->certificate));

  write(fd, cert->certificate, strlen(cert->certificate));
  close(fd);

 /*
  * Insert the certificate at the front of the list...
  */

  cert->next = Certs;
  Certs      = cert;
}


/*
 * 'cupsdDeleteCert()' - Delete a single certificate.
 */

void
cupsdDeleteCert(int pid)		/* I - Process ID */
{
  cupsd_cert_t	*cert,			/* Current certificate */
		*prev;			/* Previous certificate */
  char		filename[1024];		/* Certificate file */


  for (prev = NULL, cert = Certs; cert != NULL; prev = cert, cert = cert->next)
    if (cert->pid == pid)
    {
     /*
      * Remove this certificate from the list...
      */

      cupsdLogMessage(CUPSD_LOG_DEBUG2,
                      "cupsdDeleteCert: Removing certificate for PID %d", pid);

      DEBUG_printf(("DELETE pid=%d, username=%s, cert=%s\n", cert->pid,
                    cert->username, cert->certificate));

      if (prev == NULL)
        Certs = cert->next;
      else
        prev->next = cert->next;

      free(cert);

     /*
      * Delete the file and return...
      */

      snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
      if (unlink(filename))
	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);

      return;
    }
}


/*
 * 'cupsdDeleteAllCerts()' - Delete all certificates...
 */

void
cupsdDeleteAllCerts(void)
{
  cupsd_cert_t	*cert,			/* Current certificate */
		*next;			/* Next certificate */
  char		filename[1024];		/* Certificate file */


 /*
  * Loop through each certificate, deleting them...
  */

  for (cert = Certs; cert != NULL; cert = next)
  {
   /*
    * Delete the file...
    */

    snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, cert->pid);
    if (unlink(filename))
      cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);

   /*
    * Free memory...
    */

    next = cert->next;
    free(cert);
  }

  Certs        = NULL;
  RootCertTime = 0;
}


/*
 * 'cupsdFindCert()' - Find a certificate.
 */

cupsd_cert_t *				/* O - Matching certificate or NULL */
cupsdFindCert(const char *certificate)	/* I - Certificate */
{
  cupsd_cert_t	*cert;			/* Current certificate */


  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert(certificate=%s)",
                  certificate);
  for (cert = Certs; cert != NULL; cert = cert->next)
    if (!_cups_strcasecmp(certificate, cert->certificate))
    {
      cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Returning %s...",
                      cert->username);
      return (cert);
    }

  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Certificate not found!");

  return (NULL);
}


/*
 * 'cupsdInitCerts()' - Initialize the certificate "system" and root
 *                      certificate.
 */

void
cupsdInitCerts(void)
{
#ifndef HAVE_ARC4RANDOM
  cups_file_t	*fp;			/* /dev/random file */


 /*
  * Initialize the random number generator using the random device or
  * the current time, as available...
  */

  if ((fp = cupsFileOpen("/dev/urandom", "rb")) == NULL)
  {
    struct timeval tod;			/* Time of day */

   /*
    * Get the time in usecs and use it as the initial seed...
    */

    gettimeofday(&tod, NULL);

    CUPS_SRAND((unsigned)(tod.tv_sec + tod.tv_usec));
  }
  else
  {
    unsigned	seed;			/* Seed for random number generator */

   /*
    * Read 4 random characters from the random device and use
    * them as the seed...
    */

    seed = (unsigned)cupsFileGetChar(fp);
    seed = (seed << 8) | (unsigned)cupsFileGetChar(fp);
    seed = (seed << 8) | (unsigned)cupsFileGetChar(fp);
    CUPS_SRAND((seed << 8) | (unsigned)cupsFileGetChar(fp));

    cupsFileClose(fp);
  }
#endif /* !HAVE_ARC4RANDOM */

 /*
  * Create a root certificate and return...
  */

  if (!RunUser)
    cupsdAddCert(0, "root", cupsdDefaultAuthType());
}


/*
 * End of "$Id$".
 */
Commit	Line	Data
ef416fc2	1	/*
f2d18633	2	* "$Id$"
ef416fc2	3	*
7e86f2f6	4	* Authentication certificate routines for the CUPS scheduler.
ef416fc2	5	*
7e86f2f6 MS	6	* Copyright 2007-2014 by Apple Inc.
7e86f2f6 MS	7	* Copyright 1997-2006 by Easy Software Products.
ef416fc2	8	*
7e86f2f6 MS	9	* These coded instructions, statements, and computer programs are the
	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
	16	/*
	17	* Include necessary headers...
	18	*/
	19
	20	#include "cupsd.h"
fa73b229	21	#ifdef HAVE_ACL_INIT
fa73b229	22	# include <sys/acl.h>
bd7854cb	23	# ifdef HAVE_MEMBERSHIP_H
	24	# include <membership.h>
	25	# endif /* HAVE_MEMBERSHIP_H */
fa73b229	26	#endif /* HAVE_ACL_INIT */
ef416fc2	27
	28
	29	/*
	30	* 'cupsdAddCert()' - Add a certificate.
	31	*/
	32
	33	void
	34	cupsdAddCert(int pid, /* I - Process ID */
5bd77a73	35	const char username, / I - Username */
0fa6c7fa	36	int type) /* I - AuthType for username */
ef416fc2	37	{
	38	int i; /* Looping var */
	39	cupsd_cert_t cert; / Current certificate */
	40	int fd; /* Certificate file */
	41	char filename[1024]; /* Certificate filename */
	42	static const char hex[] = "0123456789ABCDEF";
	43	/* Hex constants... */
	44
	45
	46	cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1	47	"cupsdAddCert: Adding certificate for PID %d", pid);
ef416fc2	48
	49	/*
	50	* Allocate memory for the certificate...
	51	*/
	52
	53	if ((cert = calloc(sizeof(cupsd_cert_t), 1)) == NULL)
	54	return;
	55
	56	/*
	57	* Fill in the certificate information...
	58	*/
	59
0fa6c7fa MS	60	cert->pid = pid;
0fa6c7fa MS	61	cert->type = type;
ef416fc2	62	strlcpy(cert->username, username, sizeof(cert->username));
	63
	64	for (i = 0; i < 32; i ++)
41681883	65	cert->certificate[i] = hex[CUPS_RAND() & 15];
ef416fc2	66
	67	/*
	68	* Save the certificate to a file readable only by the User and Group
	69	* (or root and SystemGroup for PID == 0)...
	70	*/
	71
	72	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
	73	unlink(filename);
	74
	75	if ((fd = open(filename, O_WRONLY \| O_CREAT \| O_EXCL, 0400)) < 0)
	76	{
	77	cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1	78	"Unable to create certificate file %s - %s",
ef416fc2	79	filename, strerror(errno));
	80	free(cert);
	81	return;
	82	}
	83
	84	if (pid == 0)
	85	{
fa73b229	86	#ifdef HAVE_ACL_INIT
	87	acl_t acl; /* ACL information */
	88	acl_entry_t entry; /* ACL entry */
	89	acl_permset_t permset; /* Permissions */
bd7854cb	90	# ifdef HAVE_MBR_UID_TO_UUID
fa73b229	91	uuid_t group; /* Group ID */
bd7854cb	92	# endif /* HAVE_MBR_UID_TO_UUID */
e53920b9	93	static int acls_not_supported = 0;
e53920b9	94	/* Only warn once */
fa73b229	95	#endif /* HAVE_ACL_INIT */
	96
	97
ef416fc2	98	/*
	99	* Root certificate...
	100	*/
	101
	102	fchmod(fd, 0440);
	103	fchown(fd, RunUser, SystemGroupIDs[0]);
	104
bd7854cb	105	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddCert: NumSystemGroups=%d",
	106	NumSystemGroups);
	107
fa73b229	108	#ifdef HAVE_ACL_INIT
	109	if (NumSystemGroups > 1)
	110	{
	111	/*
	112	* Set POSIX ACLs for the root certificate so that all system
	113	* groups can access it...
	114	*/
	115
12f89d24 MS	116	int j; /* Looping var */
12f89d24 MS	117
bd7854cb	118	# ifdef HAVE_MBR_UID_TO_UUID
	119	/*
	120	* On MacOS X, ACLs use UUIDs instead of GIDs...
	121	*/
	122
fa73b229	123	acl = acl_init(NumSystemGroups - 1);
	124
	125	for (i = 1; i < NumSystemGroups; i ++)
	126	{
	127	/*
	128	* Add each group ID to the ACL...
	129	*/
	130
12f89d24 MS	131	for (j = 0; j < i; j ++)
	132	if (SystemGroupIDs[j] == SystemGroupIDs[i])
	133	break;
	134
	135	if (j < i)
	136	continue; /* Skip duplicate groups */
	137
fa73b229	138	acl_create_entry(&acl, &entry);
	139	acl_get_permset(entry, &permset);
	140	acl_add_perm(permset, ACL_READ_DATA);
	141	acl_set_tag_type(entry, ACL_EXTENDED_ALLOW);
	142	mbr_gid_to_uuid((gid_t)SystemGroupIDs[i], group);
	143	acl_set_qualifier(entry, &group);
	144	acl_set_permset(entry, permset);
	145	}
12f89d24	146
bd7854cb	147	# else
	148	/*
	149	* POSIX ACLs need permissions for owner, group, other, and mask
	150	* in addition to the rest of the system groups...
	151	*/
	152
	153	acl = acl_init(NumSystemGroups + 3);
	154
	155	/* Owner */
	156	acl_create_entry(&acl, &entry);
	157	acl_get_permset(entry, &permset);
	158	acl_add_perm(permset, ACL_READ);
	159	acl_set_tag_type(entry, ACL_USER_OBJ);
	160	acl_set_permset(entry, permset);
	161
	162	/* Group */
	163	acl_create_entry(&acl, &entry);
	164	acl_get_permset(entry, &permset);
	165	acl_add_perm(permset, ACL_READ);
	166	acl_set_tag_type(entry, ACL_GROUP_OBJ);
	167	acl_set_permset(entry, permset);
	168
	169	/* Others */
	170	acl_create_entry(&acl, &entry);
	171	acl_get_permset(entry, &permset);
4744bd90	172	acl_add_perm(permset, 0);
bd7854cb	173	acl_set_tag_type(entry, ACL_OTHER);
	174	acl_set_permset(entry, permset);
	175
	176	/* Mask */
	177	acl_create_entry(&acl, &entry);
	178	acl_get_permset(entry, &permset);
	179	acl_add_perm(permset, ACL_READ);
	180	acl_set_tag_type(entry, ACL_MASK);
	181	acl_set_permset(entry, permset);
	182
	183	for (i = 1; i < NumSystemGroups; i ++)
	184	{
	185	/*
	186	* Add each group ID to the ACL...
	187	*/
	188
12f89d24 MS	189	for (j = 0; j < i; j ++)
	190	if (SystemGroupIDs[j] == SystemGroupIDs[i])
	191	break;
	192
	193	if (j < i)
	194	continue; /* Skip duplicate groups */
	195
bd7854cb	196	acl_create_entry(&acl, &entry);
	197	acl_get_permset(entry, &permset);
	198	acl_add_perm(permset, ACL_READ);
	199	acl_set_tag_type(entry, ACL_GROUP);
	200	acl_set_qualifier(entry, SystemGroupIDs + i);
	201	acl_set_permset(entry, permset);
	202	}
	203
	204	if (acl_valid(acl))
	205	{
e53920b9	206	char text, textptr; /* Temporary string */
e53920b9	207
bd7854cb	208	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL did not validate: %s",
	209	strerror(errno));
	210	text = acl_to_text(acl, NULL);
	211	for (textptr = strchr(text, '\n');
	212	textptr;
	213	textptr = strchr(textptr + 1, '\n'))
	214	*textptr = ',';
	215
	216	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL: %s", text);
a2326b5b	217	acl_free(text);
bd7854cb	218	}
bd7854cb	219	# endif /* HAVE_MBR_UID_TO_UUID */
fa73b229	220
fa73b229	221	if (acl_set_fd(fd, acl))
e53920b9	222	{
	223	if (errno != EOPNOTSUPP \|\| !acls_not_supported)
	224	cupsdLogMessage(CUPSD_LOG_ERROR,
	225	"Unable to set ACLs on root certificate \"%s\" - %s",
	226	filename, strerror(errno));
	227
	228	if (errno == EOPNOTSUPP)
	229	acls_not_supported = 1;
	230	}
	231
fa73b229	232	acl_free(acl);
	233	}
	234	#endif /* HAVE_ACL_INIT */
	235
ef416fc2	236	RootCertTime = time(NULL);
	237	}
	238	else
	239	{
	240	/*
	241	* CGI certificate...
	242	*/
	243
	244	fchmod(fd, 0400);
	245	fchown(fd, User, Group);
	246	}
	247
	248	DEBUG_printf(("ADD pid=%d, username=%s, cert=%s\n", pid, username,
	249	cert->certificate));
	250
	251	write(fd, cert->certificate, strlen(cert->certificate));
	252	close(fd);
	253
	254	/*
	255	* Insert the certificate at the front of the list...
	256	*/
	257
	258	cert->next = Certs;
	259	Certs = cert;
	260	}
	261
	262
	263	/*
	264	* 'cupsdDeleteCert()' - Delete a single certificate.
	265	*/
	266
	267	void
	268	cupsdDeleteCert(int pid) /* I - Process ID */
	269	{
	270	cupsd_cert_t cert, / Current certificate */
	271	prev; / Previous certificate */
	272	char filename[1024]; /* Certificate file */
	273
	274
	275	for (prev = NULL, cert = Certs; cert != NULL; prev = cert, cert = cert->next)
	276	if (cert->pid == pid)
	277	{
	278	/*
	279	* Remove this certificate from the list...
	280	*/
	281
	282	cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1	283	"cupsdDeleteCert: Removing certificate for PID %d", pid);
ef416fc2	284
	285	DEBUG_printf(("DELETE pid=%d, username=%s, cert=%s\n", cert->pid,
	286	cert->username, cert->certificate));
	287
	288	if (prev == NULL)
	289	Certs = cert->next;
	290	else
	291	prev->next = cert->next;
	292
	293	free(cert);
	294
	295	/*
	296	* Delete the file and return...
	297	*/
	298
	299	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
	300	if (unlink(filename))
b9faaae1	301	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);
ef416fc2	302
	303	return;
	304	}
	305	}
	306
	307
	308	/*
	309	* 'cupsdDeleteAllCerts()' - Delete all certificates...
	310	*/
	311
	312	void
	313	cupsdDeleteAllCerts(void)
	314	{
	315	cupsd_cert_t cert, / Current certificate */
	316	next; / Next certificate */
	317	char filename[1024]; /* Certificate file */
	318
	319
	320	/*
	321	* Loop through each certificate, deleting them...
	322	*/
	323
	324	for (cert = Certs; cert != NULL; cert = next)
	325	{
	326	/*
	327	* Delete the file...
	328	*/
	329
	330	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, cert->pid);
	331	if (unlink(filename))
b9faaae1	332	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);
ef416fc2	333
	334	/*
	335	* Free memory...
	336	*/
	337
	338	next = cert->next;
	339	free(cert);
	340	}
	341
e1d6a774	342	Certs = NULL;
e1d6a774	343	RootCertTime = 0;
ef416fc2	344	}
	345
	346
	347	/*
	348	* 'cupsdFindCert()' - Find a certificate.
	349	*/
	350
db0bd74a	351	cupsd_cert_t * /* O - Matching certificate or NULL */
ef416fc2	352	cupsdFindCert(const char certificate) / I - Certificate */
	353	{
	354	cupsd_cert_t cert; / Current certificate */
	355
	356
b9faaae1 MS	357	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert(certificate=%s)",
b9faaae1 MS	358	certificate);
ef416fc2	359	for (cert = Certs; cert != NULL; cert = cert->next)
88f9aafc	360	if (!_cups_strcasecmp(certificate, cert->certificate))
ef416fc2	361	{
b9faaae1 MS	362	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Returning %s...",
b9faaae1 MS	363	cert->username);
db0bd74a	364	return (cert);
ef416fc2	365	}
ef416fc2	366
b9faaae1	367	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Certificate not found!");
ef416fc2	368
	369	return (NULL);
	370	}
	371
	372
	373	/*
	374	* 'cupsdInitCerts()' - Initialize the certificate "system" and root
	375	* certificate.
	376	*/
	377
	378	void
	379	cupsdInitCerts(void)
	380	{
f8b3a85b	381	#ifndef HAVE_ARC4RANDOM
ef416fc2	382	cups_file_t fp; / /dev/random file */
ef416fc2	383
	384
	385	/*
	386	* Initialize the random number generator using the random device or
	387	* the current time, as available...
	388	*/
	389
	390	if ((fp = cupsFileOpen("/dev/urandom", "rb")) == NULL)
	391	{
f8b3a85b MS	392	struct timeval tod; /* Time of day */
f8b3a85b MS	393
ef416fc2	394	/*
	395	* Get the time in usecs and use it as the initial seed...
	396	*/
	397
	398	gettimeofday(&tod, NULL);
	399
f8b3a85b	400	CUPS_SRAND((unsigned)(tod.tv_sec + tod.tv_usec));
ef416fc2	401	}
	402	else
	403	{
f8b3a85b MS	404	unsigned seed; /* Seed for random number generator */
f8b3a85b MS	405
ef416fc2	406	/*
	407	* Read 4 random characters from the random device and use
	408	* them as the seed...
	409	*/
	410
07623986 MS	411	seed = (unsigned)cupsFileGetChar(fp);
	412	seed = (seed << 8) \| (unsigned)cupsFileGetChar(fp);
	413	seed = (seed << 8) \| (unsigned)cupsFileGetChar(fp);
	414	CUPS_SRAND((seed << 8) \| (unsigned)cupsFileGetChar(fp));
ef416fc2	415
	416	cupsFileClose(fp);
	417	}
f8b3a85b	418	#endif /* !HAVE_ARC4RANDOM */
ef416fc2	419
	420	/*
	421	* Create a root certificate and return...
	422	*/
	423
	424	if (!RunUser)
0fa6c7fa	425	cupsdAddCert(0, "root", cupsdDefaultAuthType());
ef416fc2	426	}
	427
	428
	429	/*
f2d18633	430	* End of "$Id$".
ef416fc2	431	*/