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

/*
 * "$Id: cert.c 7673 2008-06-18 22:31:26Z mike $"
 *
 *   Authentication certificate routines for the CUPS scheduler.
 *
 *   Copyright 2007-2011 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:
 *
 *   cupsdAddCert()        - Add a certificate.
 *   cupsdDeleteCert()     - Delete a single certificate.
 *   cupsdDeleteAllCerts() - Delete all certificates...
 *   cupsdFindCert()       - Find a certificate.
 *   cupsdInitCerts()      - Initialize the certificate "system" and root
 *                           certificate.
 */

/*
 * 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 */
             void       *ccache)	/* I - Kerberos credentials or NULL */
{
  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;
  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);

 /*
  * Add Kerberos credentials as needed...
  */

#ifdef HAVE_GSSAPI
  cert->ccache = (krb5_ccache)ccache;
#else
  (void)ccache;
#endif /* HAVE_GSSAPI */

 /*
  * 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;

#ifdef HAVE_GSSAPI
     /*
      * Release Kerberos credentials as needed...
      */

      if (cert->ccache)
	krb5_cc_destroy(KerberosContext, cert->ccache);
#endif /* HAVE_GSSAPI */

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

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

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

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


/*
 * End of "$Id: cert.c 7673 2008-06-18 22:31:26Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
75bd9771	2	* "$Id: cert.c 7673 2008-06-18 22:31:26Z mike $"
ef416fc2	3	*
10d09e33	4	* Authentication certificate routines for the CUPS scheduler.
ef416fc2	5	*
88f9aafc	6	* Copyright 2007-2011 by Apple Inc.
bd7854cb	7	* Copyright 1997-2006 by Easy Software Products.
ef416fc2	8	*
ef416fc2	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	* cupsdAddCert() - Add a certificate.
	18	* cupsdDeleteCert() - Delete a single certificate.
	19	* cupsdDeleteAllCerts() - Delete all certificates...
	20	* cupsdFindCert() - Find a certificate.
	21	* cupsdInitCerts() - Initialize the certificate "system" and root
	22	* certificate.
	23	*/
	24
	25	/*
	26	* Include necessary headers...
	27	*/
	28
	29	#include "cupsd.h"
fa73b229	30	#ifdef HAVE_ACL_INIT
fa73b229	31	# include <sys/acl.h>
bd7854cb	32	# ifdef HAVE_MEMBERSHIP_H
	33	# include <membership.h>
	34	# endif /* HAVE_MEMBERSHIP_H */
fa73b229	35	#endif /* HAVE_ACL_INIT */
ef416fc2	36
	37
	38	/*
	39	* 'cupsdAddCert()' - Add a certificate.
	40	*/
	41
	42	void
	43	cupsdAddCert(int pid, /* I - Process ID */
5bd77a73 MS	44	const char username, / I - Username */
5bd77a73 MS	45	void ccache) / I - Kerberos credentials or NULL */
ef416fc2	46	{
	47	int i; /* Looping var */
	48	cupsd_cert_t cert; / Current certificate */
	49	int fd; /* Certificate file */
	50	char filename[1024]; /* Certificate filename */
	51	static const char hex[] = "0123456789ABCDEF";
	52	/* Hex constants... */
	53
	54
	55	cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1	56	"cupsdAddCert: Adding certificate for PID %d", pid);
ef416fc2	57
	58	/*
	59	* Allocate memory for the certificate...
	60	*/
	61
	62	if ((cert = calloc(sizeof(cupsd_cert_t), 1)) == NULL)
	63	return;
	64
	65	/*
	66	* Fill in the certificate information...
	67	*/
	68
	69	cert->pid = pid;
	70	strlcpy(cert->username, username, sizeof(cert->username));
	71
	72	for (i = 0; i < 32; i ++)
41681883	73	cert->certificate[i] = hex[CUPS_RAND() & 15];
ef416fc2	74
	75	/*
	76	* Save the certificate to a file readable only by the User and Group
	77	* (or root and SystemGroup for PID == 0)...
	78	*/
	79
	80	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
	81	unlink(filename);
	82
	83	if ((fd = open(filename, O_WRONLY \| O_CREAT \| O_EXCL, 0400)) < 0)
	84	{
	85	cupsdLogMessage(CUPSD_LOG_ERROR,
b9faaae1	86	"Unable to create certificate file %s - %s",
ef416fc2	87	filename, strerror(errno));
	88	free(cert);
	89	return;
	90	}
	91
	92	if (pid == 0)
	93	{
fa73b229	94	#ifdef HAVE_ACL_INIT
	95	acl_t acl; /* ACL information */
	96	acl_entry_t entry; /* ACL entry */
	97	acl_permset_t permset; /* Permissions */
bd7854cb	98	# ifdef HAVE_MBR_UID_TO_UUID
fa73b229	99	uuid_t group; /* Group ID */
bd7854cb	100	# endif /* HAVE_MBR_UID_TO_UUID */
e53920b9	101	static int acls_not_supported = 0;
e53920b9	102	/* Only warn once */
fa73b229	103	#endif /* HAVE_ACL_INIT */
	104
	105
ef416fc2	106	/*
	107	* Root certificate...
	108	*/
	109
	110	fchmod(fd, 0440);
	111	fchown(fd, RunUser, SystemGroupIDs[0]);
	112
bd7854cb	113	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAddCert: NumSystemGroups=%d",
	114	NumSystemGroups);
	115
fa73b229	116	#ifdef HAVE_ACL_INIT
	117	if (NumSystemGroups > 1)
	118	{
	119	/*
	120	* Set POSIX ACLs for the root certificate so that all system
	121	* groups can access it...
	122	*/
	123
12f89d24 MS	124	int j; /* Looping var */
12f89d24 MS	125
bd7854cb	126	# ifdef HAVE_MBR_UID_TO_UUID
	127	/*
	128	* On MacOS X, ACLs use UUIDs instead of GIDs...
	129	*/
	130
fa73b229	131	acl = acl_init(NumSystemGroups - 1);
	132
	133	for (i = 1; i < NumSystemGroups; i ++)
	134	{
	135	/*
	136	* Add each group ID to the ACL...
	137	*/
	138
12f89d24 MS	139	for (j = 0; j < i; j ++)
	140	if (SystemGroupIDs[j] == SystemGroupIDs[i])
	141	break;
	142
	143	if (j < i)
	144	continue; /* Skip duplicate groups */
	145
fa73b229	146	acl_create_entry(&acl, &entry);
	147	acl_get_permset(entry, &permset);
	148	acl_add_perm(permset, ACL_READ_DATA);
	149	acl_set_tag_type(entry, ACL_EXTENDED_ALLOW);
	150	mbr_gid_to_uuid((gid_t)SystemGroupIDs[i], group);
	151	acl_set_qualifier(entry, &group);
	152	acl_set_permset(entry, permset);
	153	}
12f89d24	154
bd7854cb	155	# else
	156	/*
	157	* POSIX ACLs need permissions for owner, group, other, and mask
	158	* in addition to the rest of the system groups...
	159	*/
	160
	161	acl = acl_init(NumSystemGroups + 3);
	162
	163	/* Owner */
	164	acl_create_entry(&acl, &entry);
	165	acl_get_permset(entry, &permset);
	166	acl_add_perm(permset, ACL_READ);
	167	acl_set_tag_type(entry, ACL_USER_OBJ);
	168	acl_set_permset(entry, permset);
	169
	170	/* Group */
	171	acl_create_entry(&acl, &entry);
	172	acl_get_permset(entry, &permset);
	173	acl_add_perm(permset, ACL_READ);
	174	acl_set_tag_type(entry, ACL_GROUP_OBJ);
	175	acl_set_permset(entry, permset);
	176
	177	/* Others */
	178	acl_create_entry(&acl, &entry);
	179	acl_get_permset(entry, &permset);
4744bd90	180	acl_add_perm(permset, 0);
bd7854cb	181	acl_set_tag_type(entry, ACL_OTHER);
	182	acl_set_permset(entry, permset);
	183
	184	/* Mask */
	185	acl_create_entry(&acl, &entry);
	186	acl_get_permset(entry, &permset);
	187	acl_add_perm(permset, ACL_READ);
	188	acl_set_tag_type(entry, ACL_MASK);
	189	acl_set_permset(entry, permset);
	190
	191	for (i = 1; i < NumSystemGroups; i ++)
	192	{
	193	/*
	194	* Add each group ID to the ACL...
	195	*/
	196
12f89d24 MS	197	for (j = 0; j < i; j ++)
	198	if (SystemGroupIDs[j] == SystemGroupIDs[i])
	199	break;
	200
	201	if (j < i)
	202	continue; /* Skip duplicate groups */
	203
bd7854cb	204	acl_create_entry(&acl, &entry);
	205	acl_get_permset(entry, &permset);
	206	acl_add_perm(permset, ACL_READ);
	207	acl_set_tag_type(entry, ACL_GROUP);
	208	acl_set_qualifier(entry, SystemGroupIDs + i);
	209	acl_set_permset(entry, permset);
	210	}
	211
	212	if (acl_valid(acl))
	213	{
e53920b9	214	char text, textptr; /* Temporary string */
e53920b9	215
bd7854cb	216	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL did not validate: %s",
	217	strerror(errno));
	218	text = acl_to_text(acl, NULL);
	219	for (textptr = strchr(text, '\n');
	220	textptr;
	221	textptr = strchr(textptr + 1, '\n'))
	222	*textptr = ',';
	223
	224	cupsdLogMessage(CUPSD_LOG_ERROR, "ACL: %s", text);
a2326b5b	225	acl_free(text);
bd7854cb	226	}
bd7854cb	227	# endif /* HAVE_MBR_UID_TO_UUID */
fa73b229	228
fa73b229	229	if (acl_set_fd(fd, acl))
e53920b9	230	{
	231	if (errno != EOPNOTSUPP \|\| !acls_not_supported)
	232	cupsdLogMessage(CUPSD_LOG_ERROR,
	233	"Unable to set ACLs on root certificate \"%s\" - %s",
	234	filename, strerror(errno));
	235
	236	if (errno == EOPNOTSUPP)
	237	acls_not_supported = 1;
	238	}
	239
fa73b229	240	acl_free(acl);
	241	}
	242	#endif /* HAVE_ACL_INIT */
	243
ef416fc2	244	RootCertTime = time(NULL);
	245	}
	246	else
	247	{
	248	/*
	249	* CGI certificate...
	250	*/
	251
	252	fchmod(fd, 0400);
	253	fchown(fd, User, Group);
	254	}
	255
	256	DEBUG_printf(("ADD pid=%d, username=%s, cert=%s\n", pid, username,
	257	cert->certificate));
	258
	259	write(fd, cert->certificate, strlen(cert->certificate));
	260	close(fd);
	261
5bd77a73 MS	262	/*
	263	* Add Kerberos credentials as needed...
	264	*/
	265
	266	#ifdef HAVE_GSSAPI
	267	cert->ccache = (krb5_ccache)ccache;
	268	#else
	269	(void)ccache;
	270	#endif /* HAVE_GSSAPI */
	271
ef416fc2	272	/*
	273	* Insert the certificate at the front of the list...
	274	*/
	275
	276	cert->next = Certs;
	277	Certs = cert;
	278	}
	279
	280
	281	/*
	282	* 'cupsdDeleteCert()' - Delete a single certificate.
	283	*/
	284
	285	void
	286	cupsdDeleteCert(int pid) /* I - Process ID */
	287	{
	288	cupsd_cert_t cert, / Current certificate */
	289	prev; / Previous certificate */
	290	char filename[1024]; /* Certificate file */
	291
	292
	293	for (prev = NULL, cert = Certs; cert != NULL; prev = cert, cert = cert->next)
	294	if (cert->pid == pid)
	295	{
	296	/*
	297	* Remove this certificate from the list...
	298	*/
	299
	300	cupsdLogMessage(CUPSD_LOG_DEBUG2,
b9faaae1	301	"cupsdDeleteCert: Removing certificate for PID %d", pid);
ef416fc2	302
	303	DEBUG_printf(("DELETE pid=%d, username=%s, cert=%s\n", cert->pid,
	304	cert->username, cert->certificate));
	305
	306	if (prev == NULL)
	307	Certs = cert->next;
	308	else
	309	prev->next = cert->next;
	310
5bd77a73 MS	311	#ifdef HAVE_GSSAPI
	312	/*
	313	* Release Kerberos credentials as needed...
	314	*/
	315
	316	if (cert->ccache)
	317	krb5_cc_destroy(KerberosContext, cert->ccache);
	318	#endif /* HAVE_GSSAPI */
	319
ef416fc2	320	free(cert);
	321
	322	/*
	323	* Delete the file and return...
	324	*/
	325
	326	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, pid);
	327	if (unlink(filename))
b9faaae1	328	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);
ef416fc2	329
	330	return;
	331	}
	332	}
	333
	334
	335	/*
	336	* 'cupsdDeleteAllCerts()' - Delete all certificates...
	337	*/
	338
	339	void
	340	cupsdDeleteAllCerts(void)
	341	{
	342	cupsd_cert_t cert, / Current certificate */
	343	next; / Next certificate */
	344	char filename[1024]; /* Certificate file */
	345
	346
	347	/*
	348	* Loop through each certificate, deleting them...
	349	*/
	350
	351	for (cert = Certs; cert != NULL; cert = next)
	352	{
	353	/*
	354	* Delete the file...
	355	*/
	356
	357	snprintf(filename, sizeof(filename), "%s/certs/%d", StateDir, cert->pid);
	358	if (unlink(filename))
b9faaae1	359	cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to remove %s!", filename);
ef416fc2	360
	361	/*
	362	* Free memory...
	363	*/
	364
	365	next = cert->next;
	366	free(cert);
	367	}
	368
e1d6a774	369	Certs = NULL;
e1d6a774	370	RootCertTime = 0;
ef416fc2	371	}
	372
	373
	374	/*
	375	* 'cupsdFindCert()' - Find a certificate.
	376	*/
	377
db0bd74a	378	cupsd_cert_t * /* O - Matching certificate or NULL */
ef416fc2	379	cupsdFindCert(const char certificate) / I - Certificate */
	380	{
	381	cupsd_cert_t cert; / Current certificate */
	382
	383
b9faaae1 MS	384	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert(certificate=%s)",
b9faaae1 MS	385	certificate);
ef416fc2	386	for (cert = Certs; cert != NULL; cert = cert->next)
88f9aafc	387	if (!_cups_strcasecmp(certificate, cert->certificate))
ef416fc2	388	{
b9faaae1 MS	389	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Returning %s...",
b9faaae1 MS	390	cert->username);
db0bd74a	391	return (cert);
ef416fc2	392	}
ef416fc2	393
b9faaae1	394	cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdFindCert: Certificate not found!");
ef416fc2	395
	396	return (NULL);
	397	}
	398
	399
	400	/*
	401	* 'cupsdInitCerts()' - Initialize the certificate "system" and root
	402	* certificate.
	403	*/
	404
	405	void
	406	cupsdInitCerts(void)
	407	{
f8b3a85b	408	#ifndef HAVE_ARC4RANDOM
ef416fc2	409	cups_file_t fp; / /dev/random file */
ef416fc2	410
	411
	412	/*
	413	* Initialize the random number generator using the random device or
	414	* the current time, as available...
	415	*/
	416
	417	if ((fp = cupsFileOpen("/dev/urandom", "rb")) == NULL)
	418	{
f8b3a85b MS	419	struct timeval tod; /* Time of day */
f8b3a85b MS	420
ef416fc2	421	/*
	422	* Get the time in usecs and use it as the initial seed...
	423	*/
	424
	425	gettimeofday(&tod, NULL);
	426
f8b3a85b	427	CUPS_SRAND((unsigned)(tod.tv_sec + tod.tv_usec));
ef416fc2	428	}
	429	else
	430	{
f8b3a85b MS	431	unsigned seed; /* Seed for random number generator */
f8b3a85b MS	432
ef416fc2	433	/*
	434	* Read 4 random characters from the random device and use
	435	* them as the seed...
	436	*/
	437
	438	seed = cupsFileGetChar(fp);
	439	seed = (seed << 8) \| cupsFileGetChar(fp);
	440	seed = (seed << 8) \| cupsFileGetChar(fp);
f8b3a85b	441	CUPS_SRAND((seed << 8) \| cupsFileGetChar(fp));
ef416fc2	442
	443	cupsFileClose(fp);
	444	}
f8b3a85b	445	#endif /* !HAVE_ARC4RANDOM */
ef416fc2	446
	447	/*
	448	* Create a root certificate and return...
	449	*/
	450
	451	if (!RunUser)
5bd77a73	452	cupsdAddCert(0, "root", NULL);
ef416fc2	453	}
	454
	455
	456	/*
75bd9771	457	* End of "$Id: cert.c 7673 2008-06-18 22:31:26Z mike $".
ef416fc2	458	*/