2 * "$Id: globals.c 7870 2008-08-27 18:14:10Z mike $"
4 * Global variable access routines for CUPS.
6 * Copyright 2007-2010 by Apple Inc.
7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
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/".
15 * This file is subject to the Apple OS-Developed Software exception.
19 * _cupsGlobalLock() - Lock the global mutex.
20 * _cupsGlobals() - Return a pointer to thread local storage
21 * _cupsGlobalUnlock() - Unlock the global mutex.
22 * DllMain() - Main entry for library.
23 * cups_globals_alloc() - Allocate and initialize global data.
24 * cups_globals_free() - Free global data.
25 * cups_globals_init() - Initialize environment variables.
29 * Include necessary headers...
32 #include "cups-private.h"
40 static _cups_threadkey_t cups_globals_key
= _CUPS_THREADKEY_INITIALIZER
;
41 /* Thread local storage key */
43 static pthread_once_t cups_globals_key_once
= PTHREAD_ONCE_INIT
;
44 /* One-time initialization object */
45 #endif /* HAVE_PTHREAD_H */
46 static _cups_mutex_t cups_global_mutex
= _CUPS_MUTEX_INITIALIZER
;
47 /* Global critical section */
54 static _cups_globals_t
*cups_globals_alloc(void);
55 static void cups_globals_free(_cups_globals_t
*g
);
57 static void cups_globals_init(void);
58 #endif /* HAVE_PTHREAD_H */
62 * '_cupsGlobalLock()' - Lock the global mutex.
69 pthread_mutex_lock(&cups_global_mutex
);
71 EnterCriticalSection(&cups_global_mutex
.m_criticalSection
);
72 #endif /* HAVE_PTHREAD_H */
77 * '_cupsGlobals()' - Return a pointer to thread local storage
80 _cups_globals_t
* /* O - Pointer to global data */
83 _cups_globals_t
*cg
; /* Pointer to global data */
88 * Initialize the global data exactly once...
91 pthread_once(&cups_globals_key_once
, cups_globals_init
);
92 #endif /* HAVE_PTHREAD_H */
95 * See if we have allocated the data yet...
98 if ((cg
= (_cups_globals_t
*)_cupsThreadGetData(cups_globals_key
)) == NULL
)
101 * No, allocate memory as set the pointer for the key...
104 if ((cg
= cups_globals_alloc()) != NULL
)
105 _cupsThreadSetData(cups_globals_key
, cg
);
109 * Return the pointer to the data...
117 * '_cupsGlobalUnlock()' - Unlock the global mutex.
121 _cupsGlobalUnlock(void)
123 #ifdef HAVE_PTHREAD_H
124 pthread_mutex_unlock(&cups_global_mutex
);
126 LeaveCriticalSection(&cups_global_mutex
.m_criticalSection
);
127 #endif /* HAVE_PTHREAD_H */
133 * 'DllMain()' - Main entry for library.
136 BOOL WINAPI
/* O - Success/failure */
137 DllMain(HINSTANCE hinst
, /* I - DLL module handle */
138 DWORD reason
, /* I - Reason */
139 LPVOID reserved
) /* I - Unused */
141 _cups_globals_t
*cg
; /* Global data */
149 case DLL_PROCESS_ATTACH
: /* Called on library initialization */
150 InitializeCriticalSection(&cups_global_mutex
.m_criticalSection
);
152 if ((cups_globals_key
= TlsAlloc()) == TLS_OUT_OF_INDEXES
)
156 case DLL_THREAD_DETACH
: /* Called when a thread terminates */
157 if ((cg
= (_cups_globals_t
*)TlsGetValue(cups_globals_key
)) != NULL
)
158 cups_globals_free(cg
);
161 case DLL_PROCESS_DETACH
: /* Called when library is unloaded */
162 if ((cg
= (_cups_globals_t
*)TlsGetValue(cups_globals_key
)) != NULL
)
163 cups_globals_free(cg
);
165 TlsFree(cups_globals_key
);
166 DeleteCriticalSection(&cups_global_mutex
.m_criticalSection
);
179 * 'cups_globals_alloc()' - Allocate and initialize global data.
182 static _cups_globals_t
* /* O - Pointer to global data */
183 cups_globals_alloc(void)
185 _cups_globals_t
*cg
= malloc(sizeof(_cups_globals_t
));
186 /* Pointer to global data */
188 HKEY key
; /* Registry key */
189 DWORD size
; /* Size of string */
190 static char installdir
[1024], /* Install directory */
191 confdir
[1024], /* Server root directory */
192 localedir
[1024]; /* Locale directory */
200 * Clear the global storage and set the default encryption and password
204 memset(cg
, 0, sizeof(_cups_globals_t
));
205 cg
->encryption
= (http_encryption_t
)-1;
206 cg
->password_cb
= (cups_password_cb2_t
)_cupsGetPassword
;
208 cg
->expired_certs
= 1;
209 cg
->expired_root
= 1;
212 * Then set directories as appropriate...
217 * Open the registry...
220 strcpy(installdir
, "C:/Program Files/cups.org");
222 if (!RegOpenKeyEx(HKEY_LOCAL_MACHINE
, "SOFTWARE\\cups.org", 0, KEY_READ
,
226 * Grab the installation directory...
229 size
= sizeof(installdir
);
230 RegQueryValueEx(key
, "installdir", NULL
, NULL
, installdir
, &size
);
234 snprintf(confdir
, sizeof(confdir
), "%s/conf", installdir
);
235 snprintf(localedir
, sizeof(localedir
), "%s/locale", installdir
);
237 if ((cg
->cups_datadir
= getenv("CUPS_DATADIR")) == NULL
)
238 cg
->cups_datadir
= installdir
;
240 if ((cg
->cups_serverbin
= getenv("CUPS_SERVERBIN")) == NULL
)
241 cg
->cups_serverbin
= installdir
;
243 if ((cg
->cups_serverroot
= getenv("CUPS_SERVERROOT")) == NULL
)
244 cg
->cups_serverroot
= confdir
;
246 if ((cg
->cups_statedir
= getenv("CUPS_STATEDIR")) == NULL
)
247 cg
->cups_statedir
= confdir
;
249 if ((cg
->localedir
= getenv("LOCALEDIR")) == NULL
)
250 cg
->localedir
= localedir
;
254 if ((geteuid() != getuid() && getuid()) || getegid() != getgid())
257 # endif /* HAVE_GETEUID */
260 * When running setuid/setgid, don't allow environment variables to override
264 cg
->cups_datadir
= CUPS_DATADIR
;
265 cg
->cups_serverbin
= CUPS_SERVERBIN
;
266 cg
->cups_serverroot
= CUPS_SERVERROOT
;
267 cg
->cups_statedir
= CUPS_STATEDIR
;
268 cg
->localedir
= CUPS_LOCALEDIR
;
273 * Allow directories to be overridden by environment variables.
276 if ((cg
->cups_datadir
= getenv("CUPS_DATADIR")) == NULL
)
277 cg
->cups_datadir
= CUPS_DATADIR
;
279 if ((cg
->cups_serverbin
= getenv("CUPS_SERVERBIN")) == NULL
)
280 cg
->cups_serverbin
= CUPS_SERVERBIN
;
282 if ((cg
->cups_serverroot
= getenv("CUPS_SERVERROOT")) == NULL
)
283 cg
->cups_serverroot
= CUPS_SERVERROOT
;
285 if ((cg
->cups_statedir
= getenv("CUPS_STATEDIR")) == NULL
)
286 cg
->cups_statedir
= CUPS_STATEDIR
;
288 if ((cg
->localedir
= getenv("LOCALEDIR")) == NULL
)
289 cg
->localedir
= CUPS_LOCALEDIR
;
298 * 'cups_globals_free()' - Free global data.
302 cups_globals_free(_cups_globals_t
*cg
) /* I - Pointer to global data */
304 _ipp_buffer_t
*buffer
, /* Current IPP read/write buffer */
305 *next
; /* Next buffer */
308 if (cg
->last_status_message
)
309 _cupsStrFree(cg
->last_status_message
);
311 for (buffer
= cg
->ipp_buffers
; buffer
; buffer
= next
)
317 cupsArrayDelete(cg
->leg_size_lut
);
318 cupsArrayDelete(cg
->ppd_size_lut
);
319 cupsArrayDelete(cg
->pwg_size_lut
);
323 _httpFreeCredentials(cg
->tls_credentials
);
325 cupsFileClose(cg
->stdio_files
[0]);
326 cupsFileClose(cg
->stdio_files
[1]);
327 cupsFileClose(cg
->stdio_files
[2]);
329 cupsFreeOptions(cg
->cupsd_num_settings
, cg
->cupsd_settings
);
335 #ifdef HAVE_PTHREAD_H
337 * 'cups_globals_init()' - Initialize environment variables.
341 cups_globals_init(void)
344 * Register the global data for this thread...
347 pthread_key_create(&cups_globals_key
, (void (*)(void *))cups_globals_free
);
349 #endif /* HAVE_PTHREAD_H */
353 * End of "$Id: globals.c 7870 2008-08-27 18:14:10Z mike $".