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

/*
 * "$Id: cert.c 12034 2014-07-16 19:37:34Z msweet $"
 *
 * 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_DEBUG, "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: cert.c 12034 2014-07-16 19:37:34Z msweet $".
 */
Commit	Line	Data
ef416fc2	1	/*
1a18c85c	2	* "$Id: cert.c 12034 2014-07-16 19:37:34Z msweet $"
ef416fc2	3	*
1a18c85c	4	* Authentication certificate routines for the CUPS scheduler.
ef416fc2	5	*
1a18c85c MS	6	* Copyright 2007-2014 by Apple Inc.
1a18c85c MS	7	* Copyright 1997-2006 by Easy Software Products.
ef416fc2	8	*
1a18c85c 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
1a18c85c	46	cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAddCert: Adding certificate for PID %d", pid);
ef416fc2	47
	48	/*
	49	* Allocate memory for the certificate...
	50	*/
	51
	52	if ((cert = calloc(sizeof(cupsd_cert_t), 1)) == NULL)
	53	return;
	54
	55	/*
	56	* Fill in the certificate information...
	57	*/
	58
0fa6c7fa MS	59	cert->pid = pid;
0fa6c7fa MS	60	cert->type = type;
ef416fc2	61	strlcpy(cert->username, username, sizeof(cert->username));
	62
	63	for (i = 0; i < 32; i ++)
41681883	64	cert->certificate[i] = hex[CUPS_RAND() & 15];
ef416fc2	65
	66	/*
	67	* Save the certificate to a file readable only by the User and Group
	68	* (or root and SystemGroup for PID == 0)...
	69	*/
	70
	71	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
	72	unlink(filename);
	73
	74	if ((fd = open(filename, O_WRONLY \| O_CREAT \| O_EXCL, 0400)) < 0)
	75	{
	76	cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1	77	"Unable to create certificate file %s - %s",
ef416fc2	78	filename, strerror(errno));
	79	free(cert);
	80	return;
	81	}
	82
	83	if (pid == 0)
	84	{
fa73b229	85	#ifdef HAVE_ACL_INIT
	86	acl_t acl; /* ACL information */
	87	acl_entry_t entry; /* ACL entry */
	88	acl_permset_t permset; /* Permissions */
bd7854cb	89	# ifdef HAVE_MBR_UID_TO_UUID
fa73b229	90	uuid_t group; /* Group ID */
bd7854cb	91	# endif /* HAVE_MBR_UID_TO_UUID */
e53920b9	92	static int acls_not_supported = 0;
e53920b9	93	/* Only warn once */
fa73b229	94	#endif /* HAVE_ACL_INIT */
	95
	96
ef416fc2	97	/*
	98	* Root certificate...
	99	*/
	100
	101	fchmod(fd, 0440);
	102	fchown(fd, RunUser, SystemGroupIDs[0]);
	103
bd7854cb	104	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddCert: NumSystemGroups=%d",
	105	NumSystemGroups);
	106
fa73b229	107	#ifdef HAVE_ACL_INIT
	108	if (NumSystemGroups > 1)
	109	{
	110	/*
	111	* Set POSIX ACLs for the root certificate so that all system
	112	* groups can access it...
	113	*/
	114
12f89d24 MS	115	int j; /* Looping var */
12f89d24 MS	116
bd7854cb	117	# ifdef HAVE_MBR_UID_TO_UUID
	118	/*
	119	* On MacOS X, ACLs use UUIDs instead of GIDs...
	120	*/
	121
fa73b229	122	acl = acl_init(NumSystemGroups - 1);
	123
	124	for (i = 1; i < NumSystemGroups; i ++)
	125	{
	126	/*
	127	* Add each group ID to the ACL...
	128	*/
	129
12f89d24 MS	130	for (j = 0; j < i; j ++)
	131	if (SystemGroupIDs[j] == SystemGroupIDs[i])
	132	break;
	133
	134	if (j < i)
	135	continue; /* Skip duplicate groups */
	136
fa73b229	137	acl_create_entry(&acl, &entry);
	138	acl_get_permset(entry, &permset);
	139	acl_add_perm(permset, ACL_READ_DATA);
	140	acl_set_tag_type(entry, ACL_EXTENDED_ALLOW);
	141	mbr_gid_to_uuid((gid_t)SystemGroupIDs[i], group);
	142	acl_set_qualifier(entry, &group);
	143	acl_set_permset(entry, permset);
	144	}
12f89d24	145
bd7854cb	146	# else
	147	/*
	148	* POSIX ACLs need permissions for owner, group, other, and mask
	149	* in addition to the rest of the system groups...
	150	*/
	151
	152	acl = acl_init(NumSystemGroups + 3);
	153
	154	/* Owner */
	155	acl_create_entry(&acl, &entry);
	156	acl_get_permset(entry, &permset);
	157	acl_add_perm(permset, ACL_READ);
	158	acl_set_tag_type(entry, ACL_USER_OBJ);
	159	acl_set_permset(entry, permset);
	160
	161	/* Group */
	162	acl_create_entry(&acl, &entry);
	163	acl_get_permset(entry, &permset);
	164	acl_add_perm(permset, ACL_READ);
	165	acl_set_tag_type(entry, ACL_GROUP_OBJ);
	166	acl_set_permset(entry, permset);
	167
	168	/* Others */
	169	acl_create_entry(&acl, &entry);
	170	acl_get_permset(entry, &permset);
4744bd90	171	acl_add_perm(permset, 0);
bd7854cb	172	acl_set_tag_type(entry, ACL_OTHER);
	173	acl_set_permset(entry, permset);
	174
	175	/* Mask */
	176	acl_create_entry(&acl, &entry);
	177	acl_get_permset(entry, &permset);
	178	acl_add_perm(permset, ACL_READ);
	179	acl_set_tag_type(entry, ACL_MASK);
	180	acl_set_permset(entry, permset);
	181
	182	for (i = 1; i < NumSystemGroups; i ++)
	183	{
	184	/*
	185	* Add each group ID to the ACL...
	186	*/
	187
12f89d24 MS	188	for (j = 0; j < i; j ++)
	189	if (SystemGroupIDs[j] == SystemGroupIDs[i])
	190	break;
	191
	192	if (j < i)
	193	continue; /* Skip duplicate groups */
	194
bd7854cb	195	acl_create_entry(&acl, &entry);
	196	acl_get_permset(entry, &permset);
	197	acl_add_perm(permset, ACL_READ);
	198	acl_set_tag_type(entry, ACL_GROUP);
	199	acl_set_qualifier(entry, SystemGroupIDs + i);
	200	acl_set_permset(entry, permset);
	201	}
	202
	203	if (acl_valid(acl))
	204	{
e53920b9	205	char text, textptr; /* Temporary string */
e53920b9	206
bd7854cb	207	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL did not validate: %s",
	208	strerror(errno));
	209	text = acl_to_text(acl, NULL);
	210	for (textptr = strchr(text, '\n');
	211	textptr;
	212	textptr = strchr(textptr + 1, '\n'))
	213	*textptr = ',';
	214
	215	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL: %s", text);
a2326b5b	216	acl_free(text);
bd7854cb	217	}
bd7854cb	218	# endif /* HAVE_MBR_UID_TO_UUID */
fa73b229	219
fa73b229	220	if (acl_set_fd(fd, acl))
e53920b9	221	{
	222	if (errno != EOPNOTSUPP \|\| !acls_not_supported)
	223	cupsdLogMessage(CUPSD_LOG_ERROR,
	224	"Unable to set ACLs on root certificate \"%s\" - %s",
	225	filename, strerror(errno));
	226
	227	if (errno == EOPNOTSUPP)
	228	acls_not_supported = 1;
	229	}
	230
fa73b229	231	acl_free(acl);
	232	}
	233	#endif /* HAVE_ACL_INIT */
	234
ef416fc2	235	RootCertTime = time(NULL);
	236	}
	237	else
	238	{
	239	/*
	240	* CGI certificate...
	241	*/
	242
	243	fchmod(fd, 0400);
	244	fchown(fd, User, Group);
	245	}
	246
	247	DEBUG_printf(("ADD pid=%d, username=%s, cert=%s\n", pid, username,
	248	cert->certificate));
	249
	250	write(fd, cert->certificate, strlen(cert->certificate));
	251	close(fd);
	252
	253	/*
	254	* Insert the certificate at the front of the list...
	255	*/
	256
	257	cert->next = Certs;
	258	Certs = cert;
	259	}
	260
	261
	262	/*
	263	* 'cupsdDeleteCert()' - Delete a single certificate.
	264	*/
	265
	266	void
	267	cupsdDeleteCert(int pid) /* I - Process ID */
	268	{
	269	cupsd_cert_t cert, / Current certificate */
	270	prev; / Previous certificate */
	271	char filename[1024]; /* Certificate file */
	272
	273
	274	for (prev = NULL, cert = Certs; cert != NULL; prev = cert, cert = cert->next)
	275	if (cert->pid == pid)
	276	{
	277	/*
	278	* Remove this certificate from the list...
	279	*/
	280
	281	cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1	282	"cupsdDeleteCert: Removing certificate for PID %d", pid);
ef416fc2	283
	284	DEBUG_printf(("DELETE pid=%d, username=%s, cert=%s\n", cert->pid,
	285	cert->username, cert->certificate));
	286
	287	if (prev == NULL)
	288	Certs = cert->next;
	289	else
	290	prev->next = cert->next;
	291
	292	free(cert);
	293
	294	/*
	295	* Delete the file and return...
	296	*/
	297
	298	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
	299	if (unlink(filename))
b9faaae1	300	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);
ef416fc2	301
	302	return;
	303	}
	304	}
	305
	306
	307	/*
	308	* 'cupsdDeleteAllCerts()' - Delete all certificates...
	309	*/
	310
	311	void
	312	cupsdDeleteAllCerts(void)
	313	{
	314	cupsd_cert_t cert, / Current certificate */
	315	next; / Next certificate */
	316	char filename[1024]; /* Certificate file */
	317
	318
	319	/*
	320	* Loop through each certificate, deleting them...
	321	*/
	322
	323	for (cert = Certs; cert != NULL; cert = next)
	324	{
	325	/*
	326	* Delete the file...
	327	*/
	328
	329	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, cert->pid);
	330	if (unlink(filename))
b9faaae1	331	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);
ef416fc2	332
	333	/*
	334	* Free memory...
	335	*/
	336
	337	next = cert->next;
	338	free(cert);
	339	}
	340
e1d6a774	341	Certs = NULL;
e1d6a774	342	RootCertTime = 0;
ef416fc2	343	}
	344
	345
	346	/*
	347	* 'cupsdFindCert()' - Find a certificate.
	348	*/
	349
db0bd74a	350	cupsd_cert_t * /* O - Matching certificate or NULL */
ef416fc2	351	cupsdFindCert(const char certificate) / I - Certificate */
	352	{
	353	cupsd_cert_t cert; / Current certificate */
	354
	355
b9faaae1 MS	356	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert(certificate=%s)",
b9faaae1 MS	357	certificate);
ef416fc2	358	for (cert = Certs; cert != NULL; cert = cert->next)
88f9aafc	359	if (!_cups_strcasecmp(certificate, cert->certificate))
ef416fc2	360	{
b9faaae1 MS	361	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Returning %s...",
b9faaae1 MS	362	cert->username);
db0bd74a	363	return (cert);
ef416fc2	364	}
ef416fc2	365
b9faaae1	366	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Certificate not found!");
ef416fc2	367
	368	return (NULL);
	369	}
	370
	371
	372	/*
	373	* 'cupsdInitCerts()' - Initialize the certificate "system" and root
	374	* certificate.
	375	*/
	376
	377	void
	378	cupsdInitCerts(void)
	379	{
f8b3a85b	380	#ifndef HAVE_ARC4RANDOM
ef416fc2	381	cups_file_t fp; / /dev/random file */
ef416fc2	382
	383
	384	/*
	385	* Initialize the random number generator using the random device or
	386	* the current time, as available...
	387	*/
	388
	389	if ((fp = cupsFileOpen("/dev/urandom", "rb")) == NULL)
	390	{
f8b3a85b MS	391	struct timeval tod; /* Time of day */
f8b3a85b MS	392
ef416fc2	393	/*
	394	* Get the time in usecs and use it as the initial seed...
	395	*/
	396
	397	gettimeofday(&tod, NULL);
	398
f8b3a85b	399	CUPS_SRAND((unsigned)(tod.tv_sec + tod.tv_usec));
ef416fc2	400	}
	401	else
	402	{
f8b3a85b MS	403	unsigned seed; /* Seed for random number generator */
f8b3a85b MS	404
ef416fc2	405	/*
	406	* Read 4 random characters from the random device and use
	407	* them as the seed...
	408	*/
	409
1a18c85c MS	410	seed = (unsigned)cupsFileGetChar(fp);
	411	seed = (seed << 8) \| (unsigned)cupsFileGetChar(fp);
	412	seed = (seed << 8) \| (unsigned)cupsFileGetChar(fp);
	413	CUPS_SRAND((seed << 8) \| (unsigned)cupsFileGetChar(fp));
ef416fc2	414
	415	cupsFileClose(fp);
	416	}
f8b3a85b	417	#endif /* !HAVE_ARC4RANDOM */
ef416fc2	418
	419	/*
	420	* Create a root certificate and return...
	421	*/
	422
	423	if (!RunUser)
0fa6c7fa	424	cupsdAddCert(0, "root", cupsdDefaultAuthType());
ef416fc2	425	}
	426
	427
	428	/*
1a18c85c	429	* End of "$Id: cert.c 12034 2014-07-16 19:37:34Z msweet $".
ef416fc2	430	*/