2 * "$Id: globals.c 12480 2015-02-03 12:36:34Z msweet $"
4 * Global variable access routines for CUPS.
6 * Copyright 2007-2013 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_fix_path() - Fix a file path to use forward slashes consistently.
24 * cups_globals_alloc() - Allocate and initialize global data.
25 * cups_globals_free() - Free global data.
26 * cups_globals_init() - Initialize environment variables.
30 * Include necessary headers...
33 #include "cups-private.h"
42 static int cups_global_index = 0;
43 /* Next thread number */
45 static _cups_threadkey_t cups_globals_key = _CUPS_THREADKEY_INITIALIZER;
46 /* Thread local storage key */
48 static pthread_once_t cups_globals_key_once = PTHREAD_ONCE_INIT;
49 /* One-time initialization object */
50 #endif /* HAVE_PTHREAD_H */
51 #if defined(HAVE_PTHREAD_H) || defined(WIN32)
52 static _cups_mutex_t cups_global_mutex = _CUPS_MUTEX_INITIALIZER;
53 /* Global critical section */
54 #endif /* HAVE_PTHREAD_H || WIN32 */
62 static void cups_fix_path(char *path);
64 static _cups_globals_t *cups_globals_alloc(void);
65 #if defined(HAVE_PTHREAD_H) || defined(WIN32)
66 static void cups_globals_free(_cups_globals_t *g);
67 #endif /* HAVE_PTHREAD_H || WIN32 */
69 static void cups_globals_init(void);
70 #endif /* HAVE_PTHREAD_H */
74 * '_cupsGlobalLock()' - Lock the global mutex.
81 pthread_mutex_lock(&cups_global_mutex);
83 EnterCriticalSection(&cups_global_mutex.m_criticalSection);
84 #endif /* HAVE_PTHREAD_H */
89 * '_cupsGlobals()' - Return a pointer to thread local storage
92 _cups_globals_t * /* O - Pointer to global data */
95 _cups_globals_t *cg; /* Pointer to global data */
100 * Initialize the global data exactly once...
103 pthread_once(&cups_globals_key_once, cups_globals_init);
104 #endif /* HAVE_PTHREAD_H */
107 * See if we have allocated the data yet...
110 if ((cg = (_cups_globals_t *)_cupsThreadGetData(cups_globals_key)) == NULL)
113 * No, allocate memory as set the pointer for the key...
116 if ((cg = cups_globals_alloc()) != NULL)
117 _cupsThreadSetData(cups_globals_key, cg);
121 * Return the pointer to the data...
129 * '_cupsGlobalUnlock()' - Unlock the global mutex.
133 _cupsGlobalUnlock(void)
135 #ifdef HAVE_PTHREAD_H
136 pthread_mutex_unlock(&cups_global_mutex);
138 LeaveCriticalSection(&cups_global_mutex.m_criticalSection);
139 #endif /* HAVE_PTHREAD_H */
145 * 'DllMain()' - Main entry for library.
148 BOOL WINAPI /* O - Success/failure */
149 DllMain(HINSTANCE hinst, /* I - DLL module handle */
150 DWORD reason, /* I - Reason */
151 LPVOID reserved) /* I - Unused */
153 _cups_globals_t *cg; /* Global data */
161 case DLL_PROCESS_ATTACH : /* Called on library initialization */
162 InitializeCriticalSection(&cups_global_mutex.m_criticalSection);
164 if ((cups_globals_key = TlsAlloc()) == TLS_OUT_OF_INDEXES)
168 case DLL_THREAD_DETACH : /* Called when a thread terminates */
169 if ((cg = (_cups_globals_t *)TlsGetValue(cups_globals_key)) != NULL)
170 cups_globals_free(cg);
173 case DLL_PROCESS_DETACH : /* Called when library is unloaded */
174 if ((cg = (_cups_globals_t *)TlsGetValue(cups_globals_key)) != NULL)
175 cups_globals_free(cg);
177 TlsFree(cups_globals_key);
178 DeleteCriticalSection(&cups_global_mutex.m_criticalSection);
191 * 'cups_globals_alloc()' - Allocate and initialize global data.
194 static _cups_globals_t * /* O - Pointer to global data */
195 cups_globals_alloc(void)
197 _cups_globals_t *cg = malloc(sizeof(_cups_globals_t));
198 /* Pointer to global data */
200 HKEY key; /* Registry key */
201 DWORD size; /* Size of string */
202 static char installdir[1024] = "", /* Install directory */
203 confdir[1024] = "", /* Server root directory */
204 localedir[1024] = ""; /* Locale directory */
212 * Clear the global storage and set the default encryption and password
216 memset(cg, 0, sizeof(_cups_globals_t));
217 cg->encryption = (http_encryption_t)-1;
218 cg->password_cb = (cups_password_cb2_t)_cupsGetPassword;
220 cg->expired_certs = -1;
221 cg->validate_certs = -1;
225 * Friendly thread ID for debugging...
228 cg->thread_id = ++ cups_global_index;
232 * Then set directories as appropriate...
239 * Open the registry...
242 strlcpy(installdir, "C:/Program Files/cups.org", sizeof(installdir));
244 if (!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\cups.org", 0, KEY_READ,
248 * Grab the installation directory...
251 char *ptr; /* Pointer into installdir */
253 size = sizeof(installdir);
254 RegQueryValueEx(key, "installdir", NULL, NULL, installdir, &size);
257 for (ptr = installdir; *ptr;)
264 *ptr = '\0'; /* Strip trailing \ */
266 else if (*ptr == '/' && !ptr[1])
267 *ptr = '\0'; /* Strip trailing / */
273 snprintf(confdir, sizeof(confdir), "%s/conf", installdir);
274 snprintf(localedir, sizeof(localedir), "%s/locale", installdir);
277 if ((cg->cups_datadir = getenv("CUPS_DATADIR")) == NULL)
278 cg->cups_datadir = installdir;
280 if ((cg->cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
281 cg->cups_serverbin = installdir;
283 if ((cg->cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL)
284 cg->cups_serverroot = confdir;
286 if ((cg->cups_statedir = getenv("CUPS_STATEDIR")) == NULL)
287 cg->cups_statedir = confdir;
289 if ((cg->localedir = getenv("LOCALEDIR")) == NULL)
290 cg->localedir = localedir;
294 if ((geteuid() != getuid() && getuid()) || getegid() != getgid())
297 # endif /* HAVE_GETEUID */
300 * When running setuid/setgid, don't allow environment variables to override
304 cg->cups_datadir = CUPS_DATADIR;
305 cg->cups_serverbin = CUPS_SERVERBIN;
306 cg->cups_serverroot = CUPS_SERVERROOT;
307 cg->cups_statedir = CUPS_STATEDIR;
308 cg->localedir = CUPS_LOCALEDIR;
313 * Allow directories to be overridden by environment variables.
316 if ((cg->cups_datadir = getenv("CUPS_DATADIR")) == NULL)
317 cg->cups_datadir = CUPS_DATADIR;
319 if ((cg->cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
320 cg->cups_serverbin = CUPS_SERVERBIN;
322 if ((cg->cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL)
323 cg->cups_serverroot = CUPS_SERVERROOT;
325 if ((cg->cups_statedir = getenv("CUPS_STATEDIR")) == NULL)
326 cg->cups_statedir = CUPS_STATEDIR;
328 if ((cg->localedir = getenv("LOCALEDIR")) == NULL)
329 cg->localedir = CUPS_LOCALEDIR;
338 * 'cups_globals_free()' - Free global data.
341 #if defined(HAVE_PTHREAD_H) || defined(WIN32)
343 cups_globals_free(_cups_globals_t *cg) /* I - Pointer to global data */
345 _cups_buffer_t *buffer, /* Current read/write buffer */
346 *next; /* Next buffer */
349 if (cg->last_status_message)
350 _cupsStrFree(cg->last_status_message);
352 for (buffer = cg->cups_buffers; buffer; buffer = next)
358 cupsArrayDelete(cg->leg_size_lut);
359 cupsArrayDelete(cg->ppd_size_lut);
360 cupsArrayDelete(cg->pwg_size_lut);
365 _httpFreeCredentials(cg->tls_credentials);
366 #endif /* HAVE_SSL */
368 cupsFileClose(cg->stdio_files[0]);
369 cupsFileClose(cg->stdio_files[1]);
370 cupsFileClose(cg->stdio_files[2]);
372 cupsFreeOptions(cg->cupsd_num_settings, cg->cupsd_settings);
376 #endif /* HAVE_PTHREAD_H || WIN32 */
379 #ifdef HAVE_PTHREAD_H
381 * 'cups_globals_init()' - Initialize environment variables.
385 cups_globals_init(void)
388 * Register the global data for this thread...
391 pthread_key_create(&cups_globals_key, (void (*)(void *))cups_globals_free);
393 #endif /* HAVE_PTHREAD_H */
397 * End of "$Id: globals.c 12480 2015-02-03 12:36:34Z msweet $".