[thirdparty/cups.git] / cups / usersys.c

/*
 * "$Id: usersys.c 8498 2009-04-13 17:03:15Z mike $"
 *
 *   User, system, and password routines 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/".
 *
 *   This file is subject to the Apple OS-Developed Software exception.
 *
 * Contents:
 *
 *   cupsEncryption()        - Get the default encryption settings.
 *   cupsGetPassword()       - Get a password from the user.
 *   cupsServer()            - Return the hostname/address of the default
 *                             server.
 *   cupsSetEncryption()     - Set the encryption preference.
 *   cupsSetPasswordCB()     - Set the password callback for CUPS.
 *   cupsSetServer()         - Set the default server name.
 *   cupsSetUser()           - Set the default user name.
 *   cupsUser()              - Return the current user's name.
 *   _cupsGetPassword()      - Get a password from the user.
 *   _cupsSetDefaults()      - Set the default server, port, and encryption.
 *   cups_read_client_conf() - Read a client.conf file.
 */

/*
 * Include necessary headers...
 */

#include "http-private.h"
#include "globals.h"
#include <stdlib.h>
#include <sys/stat.h>
#ifdef WIN32
#  include <windows.h>
#endif /* WIN32 */
#include "debug.h"


/*
 * Local functions...
 */

static void	cups_read_client_conf(cups_file_t *fp,
		                      _cups_globals_t *cg,
		                      const char *cups_encryption,
				      const char *cups_server);


/*
 * 'cupsEncryption()' - Get the default encryption settings.
 *
 * The default encryption setting comes from the CUPS_ENCRYPTION
 * environment variable, then the ~/.cups/client.conf file, and finally the
 * /etc/cups/client.conf file. If not set, the default is
 * @code HTTP_ENCRYPT_IF_REQUESTED@.
 */

http_encryption_t			/* O - Encryption settings */
cupsEncryption(void)
{
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (cg->encryption == (http_encryption_t)-1)
    _cupsSetDefaults();

  return (cg->encryption);
}


/*
 * 'cupsGetPassword()' - Get a password from the user.
 *
 * Uses the current password callback function. Returns @code NULL@ if the
 * user does not provide a password.
 */

const char *				/* O - Password */
cupsGetPassword(const char *prompt)	/* I - Prompt string */
{
  return ((*_cupsGlobals()->password_cb)(prompt));
}


/*
 * 'cupsServer()' - Return the hostname/address of the default server.
 *
 * The returned value can be a fully-qualified hostname, a numeric
 * IPv4 or IPv6 address, or a domain socket pathname.
 */

const char *				/* O - Server name */
cupsServer(void)
{
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (!cg->server[0])
    _cupsSetDefaults();

  return (cg->server);
}


/*
 * 'cupsSetEncryption()' - Set the encryption preference.
 */

void
cupsSetEncryption(http_encryption_t e)	/* I - New encryption preference */
{
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  cg->encryption = e;

  if (cg->http)
    httpEncryption(cg->http, e);
}


/*
 * 'cupsSetPasswordCB()' - Set the password callback for CUPS.
 *
 * Pass @code NULL@ to restore the default (console) password callback.
 */

void
cupsSetPasswordCB(cups_password_cb_t cb)/* I - Callback function */
{
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (cb == (const char *(*)(const char *))0)
    cg->password_cb = _cupsGetPassword;
  else
    cg->password_cb = cb;
}


/*
 * 'cupsSetServer()' - Set the default server name.
 *
 * The "server" string can be a fully-qualified hostname, a numeric
 * IPv4 or IPv6 address, or a domain socket pathname. Pass @code NULL@ to
 * restore the default server name.
 */

void
cupsSetServer(const char *server)	/* I - Server name */
{
  char		*port;			/* Pointer to port */
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (server)
  {
    strlcpy(cg->server, server, sizeof(cg->server));

    if (cg->server[0] != '/' && (port = strrchr(cg->server, ':')) != NULL &&
        !strchr(port, ']') && isdigit(port[1] & 255))
    {
      *port++ = '\0';

      cg->ipp_port = atoi(port);
    }

    if (cg->server[0] == '/')
      strcpy(cg->servername, "localhost");
    else
      strlcpy(cg->servername, cg->server, sizeof(cg->servername));
  }
  else
  {
    cg->server[0]     = '\0';
    cg->servername[0] = '\0';
  }

  if (cg->http)
  {
    httpClose(cg->http);
    cg->http = NULL;
  }
}


/*
 * 'cupsSetUser()' - Set the default user name.
 *
 * Pass @code NULL@ to restore the default user name.
 */

void
cupsSetUser(const char *user)		/* I - User name */
{
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (user)
    strlcpy(cg->user, user, sizeof(cg->user));
  else
    cg->user[0] = '\0';
}


#if defined(WIN32)
/*
 * WIN32 username and password stuff.
 */

/*
 * 'cupsUser()' - Return the current user's name.
 */

const char *				/* O - User name */
cupsUser(void)
{
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (!cg->user[0])
  {
    DWORD	size;		/* Size of string */


    size = sizeof(cg->user);
    if (!GetUserName(cg->user, &size))
    {
     /*
      * Use the default username...
      */

      strcpy(cg->user, "unknown");
    }
  }

  return (cg->user);
}


/*
 * '_cupsGetPassword()' - Get a password from the user.
 */

const char *				/* O - Password */
_cupsGetPassword(const char *prompt)	/* I - Prompt string */
{
  return (NULL);
}
#else
/*
 * UNIX username and password stuff...
 */

#  include <pwd.h>

/*
 * 'cupsUser()' - Return the current user's name.
 */

const char *				/* O - User name */
cupsUser(void)
{
  struct passwd	*pwd;			/* User/password entry */
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  if (!cg->user[0])
  {
   /*
    * Rewind the password file...
    */

    setpwent();

   /*
    * Lookup the password entry for the current user.
    */

    if ((pwd = getpwuid(getuid())) == NULL)
      strcpy(cg->user, "unknown");	/* Unknown user! */
    else
    {
     /*
      * Copy the username...
      */

      setpwent();

      strlcpy(cg->user, pwd->pw_name, sizeof(cg->user));
    }

   /*
    * Rewind the password file again...
    */

    setpwent();
  }

  return (cg->user);
}


/*
 * '_cupsGetPassword()' - Get a password from the user.
 */

const char *				/* O - Password */
_cupsGetPassword(const char *prompt)	/* I - Prompt string */
{
  return (getpass(prompt));
}
#endif /* WIN32 */


/*
 * '_cupsSetDefaults()' - Set the default server, port, and encryption.
 */

void
_cupsSetDefaults(void)
{
  cups_file_t	*fp;			/* File */
  const char	*home,			/* Home directory of user */
		*cups_encryption,	/* CUPS_ENCRYPTION env var */
		*cups_server;		/* CUPS_SERVER env var */
  char		filename[1024];		/* Filename */
  _cups_globals_t *cg = _cupsGlobals();	/* Pointer to library globals */


  DEBUG_puts("_cupsSetDefaults()");

 /*
  * First collect environment variables...
  */

  cups_encryption = getenv("CUPS_ENCRYPTION");
  cups_server     = getenv("CUPS_SERVER");

 /*
  * Then, if needed, the .cups/client.conf or .cupsrc file in the home
  * directory...
  */

  if ((cg->encryption == (http_encryption_t)-1 || !cg->server[0] ||
       !cg->ipp_port) && (home = getenv("HOME")) != NULL)
  {
   /*
    * Look for ~/.cups/client.conf or ~/.cupsrc...
    */

    snprintf(filename, sizeof(filename), "%s/.cups/client.conf", home);
    if ((fp = cupsFileOpen(filename, "r")) == NULL)
    {
      snprintf(filename, sizeof(filename), "%s/.cupsrc", home);
      fp = cupsFileOpen(filename, "r");
    }

    if (fp)
    {
      cups_read_client_conf(fp, cg, cups_encryption, cups_server);
      cupsFileClose(fp);
    }
  }

  if (cg->encryption == (http_encryption_t)-1 || !cg->server[0] ||
      !cg->ipp_port)
  {
   /*
    * Look for CUPS_SERVERROOT/client.conf...
    */

    snprintf(filename, sizeof(filename), "%s/client.conf", cg->cups_serverroot);
    if ((fp = cupsFileOpen(filename, "r")) != NULL)
    {
      cups_read_client_conf(fp, cg, cups_encryption, cups_server);
      cupsFileClose(fp);
    }
  }

 /*
  * If we still have things that aren't set, use the compiled in defaults...
  */

  if (cg->encryption == (http_encryption_t)-1)
    cg->encryption = HTTP_ENCRYPT_IF_REQUESTED;

  if (!cg->server[0])
  {
    if (!cups_server)
    {
#ifdef CUPS_DEFAULT_DOMAINSOCKET
     /*
      * If we are compiled with domain socket support, only use the
      * domain socket if it exists and has the right permissions...
      */

      struct stat	sockinfo;	/* Domain socket information */

      if (!stat(CUPS_DEFAULT_DOMAINSOCKET, &sockinfo) &&
	  (sockinfo.st_mode & S_IRWXO) == S_IRWXO)
	cups_server = CUPS_DEFAULT_DOMAINSOCKET;
      else
#endif /* CUPS_DEFAULT_DOMAINSOCKET */
      cups_server = "localhost";
    }

    cupsSetServer(cups_server);
  }

  if (!cg->ipp_port)
  {
    const char		*ipp_port;	/* IPP_PORT environment variable */
    struct servent	*service;	/* Port number info */  


    if ((ipp_port = getenv("IPP_PORT")) != NULL)
    {
      if ((cg->ipp_port = atoi(ipp_port)) <= 0)
        cg->ipp_port = CUPS_DEFAULT_IPP_PORT;
    }
    else if ((service = getservbyname("ipp", NULL)) == NULL ||
             service->s_port <= 0)
      cg->ipp_port = CUPS_DEFAULT_IPP_PORT;
    else
      cg->ipp_port = ntohs(service->s_port);
  }
}


/*
 * 'cups_read_client_conf()' - Read a client.conf file.
 */

static void
cups_read_client_conf(
    cups_file_t     *fp,		/* I - File to read */
    _cups_globals_t *cg,		/* I - Global data */
    const char      *cups_encryption,	/* I - CUPS_ENCRYPTION env var */
    const char      *cups_server)	/* I - CUPS_SERVER env var */
{
  int	linenum;			/* Current line number */
  char	line[1024],			/* Line from file */
        *value,				/* Pointer into line */
	encryption[1024],		/* Encryption value */
	server_name[1024];		/* ServerName value */


 /*
  * Read from the file...
  */

  linenum = 0;
  while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum))
  {
    if (!cups_encryption && cg->encryption == (http_encryption_t)-1 &&
        !strcasecmp(line, "Encryption") && value)
    {
      strlcpy(encryption, value, sizeof(encryption));
      cups_encryption = encryption;
    }
    else if (!cups_server && (!cg->server[0] || !cg->ipp_port) &&
             !strcasecmp(line, "ServerName") && value)
    {
      strlcpy(server_name, value, sizeof(server_name));
      cups_server = server_name;
    }
  }

 /*
  * Set values...
  */

  if (cg->encryption == (http_encryption_t)-1 && cups_encryption)
  {
    if (!strcasecmp(cups_encryption, "never"))
      cg->encryption = HTTP_ENCRYPT_NEVER;
    else if (!strcasecmp(cups_encryption, "always"))
      cg->encryption = HTTP_ENCRYPT_ALWAYS;
    else if (!strcasecmp(cups_encryption, "required"))
      cg->encryption = HTTP_ENCRYPT_REQUIRED;
    else
      cg->encryption = HTTP_ENCRYPT_IF_REQUESTED;
  }

  if ((!cg->server[0] || !cg->ipp_port) && cups_server)
  {
    if (!cg->server[0])
    {
     /*
      * Copy server name...
      */

      strlcpy(cg->server, cups_server, sizeof(cg->server));

      if (cg->server[0] != '/' && (value = strrchr(cg->server, ':')) != NULL &&
	  !strchr(value, ']') && isdigit(value[1] & 255))
        *value++ = '\0';
      else
        value = NULL;

      if (cg->server[0] == '/')
	strcpy(cg->servername, "localhost");
      else
	strlcpy(cg->servername, cg->server, sizeof(cg->servername));
    }
    else if (cups_server[0] != '/' &&
             (value = strrchr(cups_server, ':')) != NULL &&
	     !strchr(value, ']') && isdigit(value[1] & 255))
      value ++;
    else
      value = NULL;

    if (!cg->ipp_port && value)
      cg->ipp_port = atoi(value);
  }
}


/*
 * End of "$Id: usersys.c 8498 2009-04-13 17:03:15Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
e07d4801	2	* "$Id: usersys.c 8498 2009-04-13 17:03:15Z mike $"
ef416fc2	3	*
	4	* User, system, and password routines for the Common UNIX Printing
	5	* System (CUPS).
	6	*
e07d4801	7	* Copyright 2007-2009 by Apple Inc.
ef416fc2	8	* Copyright 1997-2006 by Easy Software Products.
	9	*
	10	* These coded instructions, statements, and computer programs are the
bc44d920	11	* property of Apple Inc. and are protected by Federal copyright
	12	* law. Distribution and use rights are outlined in the file "LICENSE.txt"
	13	* which should have been included with this file. If this file is
	14	* file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2	15	*
	16	* This file is subject to the Apple OS-Developed Software exception.
	17	*
	18	* Contents:
	19	*
b423cd4c	20	* cupsEncryption() - Get the default encryption settings.
b423cd4c	21	* cupsGetPassword() - Get a password from the user.
e07d4801 MS	22	* cupsServer() - Return the hostname/address of the default
e07d4801 MS	23	* server.
b423cd4c	24	* cupsSetEncryption() - Set the encryption preference.
	25	* cupsSetPasswordCB() - Set the password callback for CUPS.
	26	* cupsSetServer() - Set the default server name.
	27	* cupsSetUser() - Set the default user name.
e07d4801	28	* cupsUser() - Return the current user's name.
b423cd4c	29	* _cupsGetPassword() - Get a password from the user.
e07d4801 MS	30	* _cupsSetDefaults() - Set the default server, port, and encryption.
e07d4801 MS	31	* cups_read_client_conf() - Read a client.conf file.
ef416fc2	32	*/
	33
	34	/*
	35	* Include necessary headers...
	36	*/
	37
	38	#include "http-private.h"
	39	#include "globals.h"
	40	#include <stdlib.h>
e00b005a	41	#include <sys/stat.h>
ef416fc2	42	#ifdef WIN32
	43	# include <windows.h>
	44	#endif /* WIN32 */
d09495fa	45	#include "debug.h"
ef416fc2	46
ef416fc2	47
b423cd4c	48	/*
	49	* Local functions...
	50	*/
	51
e07d4801 MS	52	static void cups_read_client_conf(cups_file_t *fp,
	53	_cups_globals_t *cg,
	54	const char *cups_encryption,
	55	const char *cups_server);
b423cd4c	56
b423cd4c	57
ef416fc2	58	/*
	59	* 'cupsEncryption()' - Get the default encryption settings.
	60	*
	61	* The default encryption setting comes from the CUPS_ENCRYPTION
568fa3fa	62	* environment variable, then the ~/.cups/client.conf file, and finally the
ef416fc2	63	* /etc/cups/client.conf file. If not set, the default is
5a738aea	64	* @code HTTP_ENCRYPT_IF_REQUESTED@.
ef416fc2	65	*/
	66
	67	http_encryption_t /* O - Encryption settings */
	68	cupsEncryption(void)
	69	{
ef416fc2	70	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	71
	72
ef416fc2	73	if (cg->encryption == (http_encryption_t)-1)
e07d4801	74	_cupsSetDefaults();
ef416fc2	75
	76	return (cg->encryption);
	77	}
	78
	79
	80	/*
	81	* 'cupsGetPassword()' - Get a password from the user.
	82	*
5a738aea	83	* Uses the current password callback function. Returns @code NULL@ if the
ecdc0628	84	* user does not provide a password.
ef416fc2	85	*/
	86
	87	const char * /* O - Password */
	88	cupsGetPassword(const char prompt) / I - Prompt string */
	89	{
	90	return ((*_cupsGlobals()->password_cb)(prompt));
	91	}
	92
	93
ef416fc2	94	/*
	95	* 'cupsServer()' - Return the hostname/address of the default server.
	96	*
	97	* The returned value can be a fully-qualified hostname, a numeric
	98	* IPv4 or IPv6 address, or a domain socket pathname.
	99	*/
	100
	101	const char * /* O - Server name */
	102	cupsServer(void)
	103	{
ef416fc2	104	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	105
	106
ef416fc2	107	if (!cg->server[0])
e07d4801	108	_cupsSetDefaults();
ef416fc2	109
e07d4801 MS	110	return (cg->server);
e07d4801 MS	111	}
ef416fc2	112
d09495fa	113
e07d4801 MS	114	/*
	115	* 'cupsSetEncryption()' - Set the encryption preference.
	116	*/
ef416fc2	117
e07d4801 MS	118	void
	119	cupsSetEncryption(http_encryption_t e) /* I - New encryption preference */
	120	{
	121	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
ef416fc2	122
ef416fc2	123
e07d4801	124	cg->encryption = e;
ef416fc2	125
e07d4801 MS	126	if (cg->http)
e07d4801 MS	127	httpEncryption(cg->http, e);
ef416fc2	128	}
	129
	130
	131	/*
	132	* 'cupsSetPasswordCB()' - Set the password callback for CUPS.
	133	*
5a738aea	134	* Pass @code NULL@ to restore the default (console) password callback.
ef416fc2	135	*/
	136
	137	void
	138	cupsSetPasswordCB(cups_password_cb_t cb)/* I - Callback function */
	139	{
	140	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	141
	142
	143	if (cb == (const char ()(const char *))0)
	144	cg->password_cb = _cupsGetPassword;
	145	else
	146	cg->password_cb = cb;
	147	}
	148
	149
	150	/*
	151	* 'cupsSetServer()' - Set the default server name.
	152	*
	153	* The "server" string can be a fully-qualified hostname, a numeric
5a738aea	154	* IPv4 or IPv6 address, or a domain socket pathname. Pass @code NULL@ to
ef416fc2	155	* restore the default server name.
	156	*/
	157
	158	void
	159	cupsSetServer(const char server) / I - Server name */
	160	{
	161	char port; / Pointer to port */
	162	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	163
	164
	165	if (server)
	166	{
	167	strlcpy(cg->server, server, sizeof(cg->server));
	168
	169	if (cg->server[0] != '/' && (port = strrchr(cg->server, ':')) != NULL &&
	170	!strchr(port, ']') && isdigit(port[1] & 255))
	171	{
	172	*port++ = '\0';
	173
e07d4801	174	cg->ipp_port = atoi(port);
ef416fc2	175	}
	176
	177	if (cg->server[0] == '/')
	178	strcpy(cg->servername, "localhost");
	179	else
	180	strlcpy(cg->servername, cg->server, sizeof(cg->servername));
	181	}
	182	else
	183	{
	184	cg->server[0] = '\0';
	185	cg->servername[0] = '\0';
	186	}
5a738aea MS	187
	188	if (cg->http)
	189	{
	190	httpClose(cg->http);
	191	cg->http = NULL;
	192	}
ef416fc2	193	}
	194
	195
	196	/*
	197	* 'cupsSetUser()' - Set the default user name.
	198	*
5a738aea	199	* Pass @code NULL@ to restore the default user name.
ef416fc2	200	*/
	201
	202	void
	203	cupsSetUser(const char user) / I - User name */
	204	{
	205	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	206
	207
	208	if (user)
	209	strlcpy(cg->user, user, sizeof(cg->user));
	210	else
	211	cg->user[0] = '\0';
	212	}
	213
	214
	215	#if defined(WIN32)
	216	/*
	217	* WIN32 username and password stuff.
	218	*/
	219
	220	/*
	221	* 'cupsUser()' - Return the current user's name.
	222	*/
	223
	224	const char * /* O - User name */
	225	cupsUser(void)
	226	{
	227	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	228
	229
	230	if (!cg->user[0])
	231	{
	232	DWORD size; /* Size of string */
	233
	234
	235	size = sizeof(cg->user);
	236	if (!GetUserName(cg->user, &size))
	237	{
	238	/*
	239	* Use the default username...
	240	*/
	241
	242	strcpy(cg->user, "unknown");
	243	}
	244	}
	245
	246	return (cg->user);
	247	}
	248
	249
	250	/*
	251	* '_cupsGetPassword()' - Get a password from the user.
	252	*/
	253
	254	const char * /* O - Password */
	255	_cupsGetPassword(const char prompt) / I - Prompt string */
	256	{
	257	return (NULL);
	258	}
	259	#else
	260	/*
	261	* UNIX username and password stuff...
	262	*/
	263
264	# include <pwd.h>
265
266	/*
267	* 'cupsUser()' - Return the current user's name.
268	*/
269
270	const char * /* O - User name */
271	cupsUser(void)
272	{
273	struct passwd pwd; / User/password entry */
274	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
275
276
277	if (!cg->user[0])
278	{
279	/*
280	* Rewind the password file...
281	*/
282
283	setpwent();
284
285	/*
286	* Lookup the password entry for the current user.
287	*/
288
289	if ((pwd = getpwuid(getuid())) == NULL)
290	strcpy(cg->user, "unknown"); /* Unknown user! */
291	else
292	{
293	/*
294	* Copy the username...
295	*/
296
297	setpwent();
298
299	strlcpy(cg->user, pwd->pw_name, sizeof(cg->user));
300	}
301
302	/*
303	* Rewind the password file again...
304	*/
305
306	setpwent();
307	}
308
309	return (cg->user);
310	}
311
312
313	/*
314	* '_cupsGetPassword()' - Get a password from the user.
315	*/
316
317	const char * /* O - Password */
318	_cupsGetPassword(const char prompt) / I - Prompt string */
319	{
320	return (getpass(prompt));
321	}
322	#endif /* WIN32 */
323
324
325	/*
e07d4801	326	* '_cupsSetDefaults()' - Set the default server, port, and encryption.
b423cd4c	327	*/
b423cd4c	328
e07d4801 MS	329	void
e07d4801 MS	330	_cupsSetDefaults(void)
b423cd4c	331	{
b423cd4c	332	cups_file_t fp; / File */
e07d4801 MS	333	const char home, / Home directory of user */
	334	cups_encryption, / CUPS_ENCRYPTION env var */
	335	cups_server; / CUPS_SERVER env var */
b423cd4c	336	char filename[1024]; /* Filename */
	337	_cups_globals_t cg = _cupsGlobals(); / Pointer to library globals */
	338
	339
e07d4801 MS	340	DEBUG_puts("_cupsSetDefaults()");
	341
	342	/*
	343	* First collect environment variables...
	344	*/
	345
	346	cups_encryption = getenv("CUPS_ENCRYPTION");
	347	cups_server = getenv("CUPS_SERVER");
	348
	349	/*
	350	* Then, if needed, the .cups/client.conf or .cupsrc file in the home
	351	* directory...
	352	*/
	353
	354	if ((cg->encryption == (http_encryption_t)-1 \|\| !cg->server[0] \|\|
	355	!cg->ipp_port) && (home = getenv("HOME")) != NULL)
b423cd4c	356	{
	357	/*
	358	* Look for ~/.cups/client.conf or ~/.cupsrc...
	359	*/
	360
	361	snprintf(filename, sizeof(filename), "%s/.cups/client.conf", home);
e07d4801	362	if ((fp = cupsFileOpen(filename, "r")) == NULL)
d09495fa	363	{
e07d4801 MS	364	snprintf(filename, sizeof(filename), "%s/.cupsrc", home);
e07d4801 MS	365	fp = cupsFileOpen(filename, "r");
d09495fa	366	}
b423cd4c	367
e07d4801 MS	368	if (fp)
	369	{
	370	cups_read_client_conf(fp, cg, cups_encryption, cups_server);
	371	cupsFileClose(fp);
	372	}
	373	}
	374
	375	if (cg->encryption == (http_encryption_t)-1 \|\| !cg->server[0] \|\|
	376	!cg->ipp_port)
	377	{
	378	/*
	379	* Look for CUPS_SERVERROOT/client.conf...
	380	*/
	381
	382	snprintf(filename, sizeof(filename), "%s/client.conf", cg->cups_serverroot);
b423cd4c	383	if ((fp = cupsFileOpen(filename, "r")) != NULL)
d09495fa	384	{
e07d4801 MS	385	cups_read_client_conf(fp, cg, cups_encryption, cups_server);
	386	cupsFileClose(fp);
	387	}
	388	}
	389
	390	/*
	391	* If we still have things that aren't set, use the compiled in defaults...
	392	*/
	393
	394	if (cg->encryption == (http_encryption_t)-1)
	395	cg->encryption = HTTP_ENCRYPT_IF_REQUESTED;
	396
	397	if (!cg->server[0])
	398	{
	399	if (!cups_server)
	400	{
	401	#ifdef CUPS_DEFAULT_DOMAINSOCKET
	402	/*
	403	* If we are compiled with domain socket support, only use the
	404	* domain socket if it exists and has the right permissions...
	405	*/
	406
	407	struct stat sockinfo; /* Domain socket information */
	408
	409	if (!stat(CUPS_DEFAULT_DOMAINSOCKET, &sockinfo) &&
	410	(sockinfo.st_mode & S_IRWXO) == S_IRWXO)
	411	cups_server = CUPS_DEFAULT_DOMAINSOCKET;
	412	else
	413	#endif /* CUPS_DEFAULT_DOMAINSOCKET */
	414	cups_server = "localhost";
	415	}
	416
	417	cupsSetServer(cups_server);
	418	}
	419
	420	if (!cg->ipp_port)
	421	{
	422	const char ipp_port; / IPP_PORT environment variable */
	423	struct servent service; / Port number info */
	424
	425
	426	if ((ipp_port = getenv("IPP_PORT")) != NULL)
	427	{
	428	if ((cg->ipp_port = atoi(ipp_port)) <= 0)
	429	cg->ipp_port = CUPS_DEFAULT_IPP_PORT;
d09495fa	430	}
e07d4801 MS	431	else if ((service = getservbyname("ipp", NULL)) == NULL \|\|
	432	service->s_port <= 0)
	433	cg->ipp_port = CUPS_DEFAULT_IPP_PORT;
	434	else
	435	cg->ipp_port = ntohs(service->s_port);
	436	}
	437	}
	438
	439
	440	/*
	441	* 'cups_read_client_conf()' - Read a client.conf file.
	442	*/
	443
	444	static void
	445	cups_read_client_conf(
	446	cups_file_t fp, / I - File to read */
	447	_cups_globals_t cg, / I - Global data */
	448	const char cups_encryption, / I - CUPS_ENCRYPTION env var */
	449	const char cups_server) / I - CUPS_SERVER env var */
	450	{
	451	int linenum; /* Current line number */
	452	char line[1024], /* Line from file */
	453	value, / Pointer into line */
	454	encryption[1024], /* Encryption value */
	455	server_name[1024]; /* ServerName value */
	456
	457
	458	/*
	459	* Read from the file...
	460	*/
	461
	462	linenum = 0;
	463	while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum))
	464	{
	465	if (!cups_encryption && cg->encryption == (http_encryption_t)-1 &&
	466	!strcasecmp(line, "Encryption") && value)
	467	{
	468	strlcpy(encryption, value, sizeof(encryption));
	469	cups_encryption = encryption;
	470	}
	471	else if (!cups_server && (!cg->server[0] \|\| !cg->ipp_port) &&
	472	!strcasecmp(line, "ServerName") && value)
	473	{
	474	strlcpy(server_name, value, sizeof(server_name));
	475	cups_server = server_name;
	476	}
	477	}
	478
	479	/*
	480	* Set values...
	481	*/
	482
	483	if (cg->encryption == (http_encryption_t)-1 && cups_encryption)
	484	{
	485	if (!strcasecmp(cups_encryption, "never"))
	486	cg->encryption = HTTP_ENCRYPT_NEVER;
	487	else if (!strcasecmp(cups_encryption, "always"))
	488	cg->encryption = HTTP_ENCRYPT_ALWAYS;
	489	else if (!strcasecmp(cups_encryption, "required"))
	490	cg->encryption = HTTP_ENCRYPT_REQUIRED;
	491	else
	492	cg->encryption = HTTP_ENCRYPT_IF_REQUESTED;
b423cd4c	493	}
b423cd4c	494
e07d4801 MS	495	if ((!cg->server[0] \|\| !cg->ipp_port) && cups_server)
	496	{
	497	if (!cg->server[0])
	498	{
	499	/*
	500	* Copy server name...
	501	*/
	502
	503	strlcpy(cg->server, cups_server, sizeof(cg->server));
	504
	505	if (cg->server[0] != '/' && (value = strrchr(cg->server, ':')) != NULL &&
	506	!strchr(value, ']') && isdigit(value[1] & 255))
	507	*value++ = '\0';
	508	else
	509	value = NULL;
	510
	511	if (cg->server[0] == '/')
	512	strcpy(cg->servername, "localhost");
	513	else
	514	strlcpy(cg->servername, cg->server, sizeof(cg->servername));
	515	}
	516	else if (cups_server[0] != '/' &&
	517	(value = strrchr(cups_server, ':')) != NULL &&
	518	!strchr(value, ']') && isdigit(value[1] & 255))
	519	value ++;
	520	else
	521	value = NULL;
	522
	523	if (!cg->ipp_port && value)
	524	cg->ipp_port = atoi(value);
	525	}
b423cd4c	526	}
	527
	528
	529	/*
e07d4801	530	* End of "$Id: usersys.c 8498 2009-04-13 17:03:15Z mike $".
ef416fc2	531	*/