| 1 | /* |
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| 2 | +----------------------------------------------------------------------+ |
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| 3 | | eAccelerator project | |
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| 4 | +----------------------------------------------------------------------+ |
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| 5 | | Copyright (c) 2004 - 2006 eAccelerator | |
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| 6 | | http://eaccelerator.net | |
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| 7 | +----------------------------------------------------------------------+ |
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| 8 | | This program is free software; you can redistribute it and/or | |
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| 9 | | modify it under the terms of the GNU General Public License | |
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| 10 | | as published by the Free Software Foundation; either version 2 | |
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| 11 | | of the License, or (at your option) any later version. | |
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| 12 | | | |
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| 13 | | This program is distributed in the hope that it will be useful, | |
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| 14 | | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 15 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
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| 16 | | GNU General Public License for more details. | |
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| 17 | | | |
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| 18 | | You should have received a copy of the GNU General Public License | |
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| 19 | | along with this program; if not, write to the Free Software | |
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| 20 | | Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
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| 21 | | MA 02111-1307, USA. | |
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| 22 | | | |
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| 23 | | A copy is availble at http://www.gnu.org/copyleft/gpl.txt | |
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| 24 | +----------------------------------------------------------------------+ |
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| 25 | $Id$ |
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| 26 | */ |
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| 27 | |
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| 28 | #include "eaccelerator.h" |
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| 29 | #include "session.h" |
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| 30 | |
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| 31 | #ifdef WITH_EACCELERATOR_SESSIONS |
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| 32 | |
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| 33 | #include "cache.h" |
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| 34 | #include "ext/standard/md5.h" |
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| 35 | #include <fcntl.h> |
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| 36 | |
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| 37 | #ifdef WIN32 |
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| 38 | # include "win32/time.h" |
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| 39 | #endif |
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| 40 | |
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| 41 | #if defined(HAVE_PHP_SESSIONS_SUPPORT) && defined(PS_CREATE_SID_ARGS) |
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| 42 | # include "ext/standard/php_lcg.h" |
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| 43 | #endif |
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| 44 | |
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| 45 | eaccelerator_cache_place eaccelerator_sessions_cache_place = |
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| 46 | eaccelerator_shm_and_disk; |
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| 47 | int eaccelerator_sessions_registered = 0; |
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| 48 | extern eaccelerator_mm *eaccelerator_mm_instance; |
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| 49 | |
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| 50 | /* set the updated ini value of the cache place */ |
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| 51 | PHP_INI_MH (eaccelerator_OnUpdateSessionCachePlace) |
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| 52 | { |
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| 53 | if (strncasecmp ("shm_and_disk", new_value, sizeof ("shm_and_disk")) == 0) { |
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| 54 | eaccelerator_sessions_cache_place = eaccelerator_shm_and_disk; |
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| 55 | } else if (strncasecmp ("shm", new_value, sizeof ("shm")) == 0) { |
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| 56 | eaccelerator_sessions_cache_place = eaccelerator_shm; |
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| 57 | } else if (strncasecmp ("shm_only", new_value, sizeof ("shm_only")) == 0) { |
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| 58 | eaccelerator_sessions_cache_place = eaccelerator_shm_only; |
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| 59 | } else if (strncasecmp ("disk_only", new_value, sizeof ("disk_only")) == 0) { |
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| 60 | eaccelerator_sessions_cache_place = eaccelerator_disk_only; |
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| 61 | } else if (strncasecmp ("none", new_value, sizeof ("none")) == 0) { |
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| 62 | eaccelerator_sessions_cache_place = eaccelerator_none; |
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| 63 | } |
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| 64 | return SUCCESS; |
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| 65 | } |
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| 66 | |
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| 67 | /* session unlock */ |
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| 68 | static int do_session_unlock (TSRMLS_D) |
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| 69 | { |
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| 70 | if (EAG (session) != NULL) { |
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| 71 | eaccelerator_unlock (EAG (session), strlen (EAG (session)) TSRMLS_CC); |
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| 72 | efree (EAG (session)); |
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| 73 | EAG (session) = NULL; |
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| 74 | } |
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| 75 | return 1; |
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| 76 | } |
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| 77 | |
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| 78 | /* session locking */ |
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| 79 | static int do_session_lock (const char *sess_name TSRMLS_DC) |
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| 80 | { |
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| 81 | if (EAG (session) != NULL) { |
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| 82 | if (strcmp (EAG (session), sess_name) == 0) { |
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| 83 | return 1; |
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| 84 | } else { |
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| 85 | do_session_unlock (TSRMLS_C); |
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| 86 | } |
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| 87 | } |
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| 88 | if (eaccelerator_lock (sess_name, strlen (sess_name) TSRMLS_CC)) { |
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| 89 | EAG (session) = estrdup (sess_name); |
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| 90 | return 1; |
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| 91 | } else { |
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| 92 | return 0; |
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| 93 | } |
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| 94 | } |
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| 95 | |
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| 96 | #ifdef HAVE_PHP_SESSIONS_SUPPORT /* PHP_SESSION_API >= 20020306 */ |
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| 97 | /******************************************************************************/ |
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| 98 | /* Session api functions */ |
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| 99 | /******************************************************************************/ |
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| 100 | |
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| 101 | PS_OPEN_FUNC (eaccelerator) |
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| 102 | { |
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| 103 | if (eaccelerator_mm_instance == NULL) { |
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| 104 | return FAILURE; |
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| 105 | } |
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| 106 | PS_SET_MOD_DATA ((void *) 1); |
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| 107 | return SUCCESS; |
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| 108 | } |
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| 109 | |
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| 110 | PS_CLOSE_FUNC (eaccelerator) |
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| 111 | { |
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| 112 | if (eaccelerator_mm_instance == NULL) { |
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| 113 | return FAILURE; |
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| 114 | } |
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| 115 | do_session_unlock (TSRMLS_C); |
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| 116 | return SUCCESS; |
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| 117 | } |
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| 118 | |
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| 119 | PS_READ_FUNC (eaccelerator) |
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| 120 | { |
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| 121 | char *skey; |
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| 122 | int len; |
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| 123 | zval ret; |
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| 124 | |
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| 125 | len = sizeof ("sess_") + strlen (key); |
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| 126 | skey = do_alloca (len + 1); |
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| 127 | strcpy (skey, "sess_"); |
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| 128 | strcat (skey, key); |
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| 129 | do_session_lock (skey TSRMLS_CC); |
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| 130 | if (eaccelerator_get |
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| 131 | (skey, len, &ret, eaccelerator_sessions_cache_place TSRMLS_CC) |
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| 132 | && ret.type == IS_STRING) { |
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| 133 | *val = estrdup (ret.value.str.val); |
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| 134 | *vallen = ret.value.str.len; |
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| 135 | zval_dtor (&ret); |
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| 136 | } else { |
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| 137 | *val = emalloc (1); |
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| 138 | (*val)[0] = '\0'; |
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| 139 | *vallen = 0; |
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| 140 | } |
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| 141 | free_alloca (skey); |
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| 142 | return SUCCESS; |
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| 143 | } |
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| 144 | |
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| 145 | PS_WRITE_FUNC (eaccelerator) |
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| 146 | { |
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| 147 | char *skey; |
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| 148 | int len; |
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| 149 | time_t ttl; |
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| 150 | zval sval; |
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| 151 | char *tmp; |
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| 152 | |
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| 153 | len = sizeof ("sess_") + strlen (key); |
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| 154 | skey = do_alloca (len + 1); |
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| 155 | strcpy (skey, "sess_"); |
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| 156 | strcat (skey, key); |
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| 157 | if (cfg_get_string ("session.gc_maxlifetime", &tmp) == FAILURE) { |
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| 158 | ttl = 1440; |
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| 159 | } else { |
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| 160 | ttl = atoi (tmp); |
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| 161 | } |
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| 162 | sval.type = IS_STRING; |
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| 163 | sval.value.str.val = (char *) val; |
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| 164 | sval.value.str.len = vallen; |
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| 165 | |
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| 166 | do_session_lock (skey TSRMLS_CC); |
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| 167 | if (eaccelerator_put |
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| 168 | (skey, len, &sval, ttl, eaccelerator_sessions_cache_place TSRMLS_CC)) { |
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| 169 | free_alloca (skey); |
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| 170 | return SUCCESS; |
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| 171 | } else { |
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| 172 | free_alloca (skey); |
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| 173 | return FAILURE; |
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| 174 | } |
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| 175 | } |
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| 176 | |
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| 177 | PS_DESTROY_FUNC (eaccelerator) |
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| 178 | { |
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| 179 | char *skey; |
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| 180 | int len; |
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| 181 | |
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| 182 | len = sizeof ("sess_") + strlen (key); |
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| 183 | skey = do_alloca (len + 1); |
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| 184 | strcpy (skey, "sess_"); |
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| 185 | strcat (skey, key); |
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| 186 | if (eaccelerator_rm |
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| 187 | (skey, len, eaccelerator_sessions_cache_place TSRMLS_CC)) { |
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| 188 | free_alloca (skey); |
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| 189 | return SUCCESS; |
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| 190 | } else { |
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| 191 | free_alloca (skey); |
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| 192 | return FAILURE; |
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| 193 | } |
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| 194 | } |
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| 195 | |
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| 196 | PS_GC_FUNC (eaccelerator) |
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| 197 | { |
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| 198 | if (eaccelerator_mm_instance == NULL) { |
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| 199 | return FAILURE; |
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| 200 | } |
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| 201 | eaccelerator_gc (TSRMLS_C); |
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| 202 | return SUCCESS; |
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| 203 | } |
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| 204 | |
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| 205 | #ifdef PS_CREATE_SID_ARGS |
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| 206 | PS_CREATE_SID_FUNC (eaccelerator) |
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| 207 | { |
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| 208 | static char hexconvtab[] = "0123456789abcdef"; |
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| 209 | PHP_MD5_CTX context; |
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| 210 | unsigned char digest[16]; |
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| 211 | char buf[256]; |
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| 212 | struct timeval tv; |
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| 213 | int i; |
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| 214 | int j = 0; |
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| 215 | unsigned char c; |
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| 216 | |
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| 217 | long entropy_length; |
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| 218 | char *entropy_file; |
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| 219 | |
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| 220 | if (cfg_get_string ("session.entropy_length", &entropy_file) == FAILURE) { |
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| 221 | entropy_length = 0; |
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| 222 | } else { |
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| 223 | entropy_length = atoi (entropy_file); |
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| 224 | } |
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| 225 | if (cfg_get_string ("session.entropy_file", &entropy_file) == FAILURE) { |
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| 226 | entropy_file = empty_string; |
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| 227 | } |
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| 228 | |
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| 229 | gettimeofday (&tv, NULL); |
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| 230 | PHP_MD5Init (&context); |
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| 231 | |
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| 232 | sprintf (buf, "%ld%ld%0.8f", tv.tv_sec, tv.tv_usec, |
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| 233 | php_combined_lcg (TSRMLS_C) * 10); |
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| 234 | PHP_MD5Update (&context, (unsigned char *) buf, strlen (buf)); |
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| 235 | |
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| 236 | if (entropy_length > 0) { |
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| 237 | int fd; |
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| 238 | |
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| 239 | fd = VCWD_OPEN (entropy_file, O_RDONLY); |
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| 240 | if (fd >= 0) { |
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| 241 | unsigned char buf[2048]; |
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| 242 | int n; |
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| 243 | size_t to_read = entropy_length; |
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| 244 | |
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| 245 | while (to_read > 0) { |
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| 246 | n = read (fd, buf, MIN (to_read, sizeof (buf))); |
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| 247 | if (n <= 0) |
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| 248 | break; |
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| 249 | PHP_MD5Update (&context, buf, n); |
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| 250 | to_read -= n; |
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| 251 | } |
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| 252 | close (fd); |
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| 253 | } |
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| 254 | } |
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| 255 | |
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| 256 | PHP_MD5Final (digest, &context); |
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| 257 | |
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| 258 | for (i = 0; i < 16; i++) { |
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| 259 | c = digest[i]; |
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| 260 | buf[j++] = hexconvtab[c >> 4]; |
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| 261 | buf[j++] = hexconvtab[c & 15]; |
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| 262 | } |
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| 263 | buf[j] = '\0'; |
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| 264 | |
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| 265 | if (newlen) |
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| 266 | *newlen = j; |
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| 267 | return estrdup (buf); |
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| 268 | } |
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| 269 | #endif |
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| 270 | |
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| 271 | #else |
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| 272 | /******************************************************************************/ |
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| 273 | /* PHP function to register as user session handlers when the session api */ |
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| 274 | /* available. */ |
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| 275 | /******************************************************************************/ |
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| 276 | |
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| 277 | PHP_FUNCTION (_eaccelerator_session_open) |
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| 278 | { |
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| 279 | if (eaccelerator_mm_instance == NULL) { |
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| 280 | RETURN_FALSE; |
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| 281 | } |
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| 282 | RETURN_TRUE; |
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| 283 | } |
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| 284 | |
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| 285 | PHP_FUNCTION (_eaccelerator_session_close) |
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| 286 | { |
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| 287 | if (eaccelerator_mm_instance == NULL) { |
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| 288 | RETURN_FALSE; |
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| 289 | } |
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| 290 | do_session_unlock (TSRMLS_C); |
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| 291 | RETURN_TRUE; |
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| 292 | } |
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| 293 | |
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| 294 | PHP_FUNCTION (_eaccelerator_session_read) |
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| 295 | { |
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| 296 | zval **arg_key; |
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| 297 | char *key; |
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| 298 | int len; |
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| 299 | |
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| 300 | if (ZEND_NUM_ARGS () != 1 |
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| 301 | || zend_get_parameters_ex (1, &arg_key) == FAILURE) { |
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| 302 | WRONG_PARAM_COUNT; |
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| 303 | } |
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| 304 | len = sizeof ("sess_") + (*arg_key)->value.str.len; |
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| 305 | key = do_alloca (len + 1); |
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| 306 | strcpy (key, "sess_"); |
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| 307 | strcat (key, (*arg_key)->value.str.val); |
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| 308 | do_session_lock (key TSRMLS_CC); |
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| 309 | if (eaccelerator_get |
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| 310 | (key, len, return_value, eaccelerator_sessions_cache_place TSRMLS_CC)) { |
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| 311 | free_alloca (key); |
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| 312 | return; |
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| 313 | } else { |
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| 314 | free_alloca (key); |
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| 315 | RETURN_EMPTY_STRING (); |
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| 316 | } |
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| 317 | } |
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| 318 | |
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| 319 | PHP_FUNCTION (_eaccelerator_session_write) |
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| 320 | { |
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| 321 | zval **arg_key, **arg_val; |
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| 322 | char *key; |
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| 323 | int len; |
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| 324 | time_t ttl; |
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| 325 | |
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| 326 | if (ZEND_NUM_ARGS () != 2 |
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| 327 | || zend_get_parameters_ex (2, &arg_key, &arg_val) == FAILURE) { |
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| 328 | WRONG_PARAM_COUNT; |
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| 329 | } |
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| 330 | len = sizeof ("sess_") + (*arg_key)->value.str.len; |
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| 331 | key = do_alloca (len + 1); |
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| 332 | strcpy (key, "sess_"); |
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| 333 | strcat (key, (*arg_key)->value.str.val); |
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| 334 | ttl = PS (gc_maxlifetime); |
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| 335 | if (ttl < 0) |
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| 336 | ttl = 1440; |
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| 337 | do_session_lock (key TSRMLS_CC); |
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| 338 | if (eaccelerator_put |
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| 339 | (key, len, *arg_val, ttl, |
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| 340 | eaccelerator_sessions_cache_place TSRMLS_CC)) { |
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| 341 | free_alloca (key); |
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| 342 | RETURN_TRUE; |
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| 343 | } else { |
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| 344 | free_alloca (key); |
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| 345 | RETURN_FALSE; |
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| 346 | } |
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| 347 | } |
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| 348 | |
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| 349 | PHP_FUNCTION (_eaccelerator_session_destroy) |
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| 350 | { |
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| 351 | zval **arg_key; |
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| 352 | char *key; |
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| 353 | int len; |
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| 354 | |
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| 355 | if (ZEND_NUM_ARGS () != 1 |
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| 356 | || zend_get_parameters_ex (1, &arg_key) == FAILURE) { |
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| 357 | WRONG_PARAM_COUNT; |
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| 358 | } |
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| 359 | len = sizeof ("sess_") + (*arg_key)->value.str.len; |
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| 360 | key = do_alloca (len + 1); |
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| 361 | strcpy (key, "sess_"); |
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| 362 | strcat (key, (*arg_key)->value.str.val); |
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| 363 | if (eaccelerator_rm (key, len, eaccelerator_sessions_cache_place TSRMLS_CC)) { |
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| 364 | free_alloca (key); |
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| 365 | RETURN_TRUE; |
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| 366 | } else { |
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| 367 | free_alloca (key); |
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| 368 | RETURN_FALSE; |
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| 369 | } |
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| 370 | } |
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| 371 | |
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| 372 | PHP_FUNCTION (_eaccelerator_session_gc) |
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| 373 | { |
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| 374 | if (eaccelerator_mm_instance == NULL) { |
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| 375 | RETURN_FALSE; |
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| 376 | } |
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| 377 | eaccelerator_gc (TSRMLS_C); |
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| 378 | RETURN_TRUE; |
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| 379 | } |
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| 380 | #endif /* ELSE HAVE_PHP_SESSIONS_SUPPORT */ |
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| 381 | |
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| 382 | ps_module ps_mod_eaccelerator = { |
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| 383 | #ifdef PS_CREATE_SID_ARGS |
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| 384 | PS_MOD_SID (eaccelerator) |
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| 385 | #else |
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| 386 | PS_MOD (eaccelerator) |
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| 387 | #endif |
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| 388 | }; |
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| 389 | |
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| 390 | /* is the eA registered as session handler */ |
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| 391 | int eaccelerator_session_registered () |
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| 392 | { |
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| 393 | return !(eaccelerator_sessions_cache_place != eaccelerator_none && |
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| 394 | eaccelerator_sessions_registered == 0); |
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| 395 | } |
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| 396 | |
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| 397 | /* register ea as session handler */ |
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| 398 | void eaccelerator_register_session () |
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| 399 | { |
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| 400 | php_session_register_module (&ps_mod_eaccelerator); |
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| 401 | eaccelerator_sessions_registered = 1; |
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| 402 | } |
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| 403 | |
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| 404 | /* register ea as the custom session handler */ |
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| 405 | int eaccelerator_set_session_handlers (TSRMLS_D) |
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| 406 | { |
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| 407 | zval func; |
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| 408 | zval retval; |
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| 409 | int ret = 1; |
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| 410 | #ifdef HAVE_PHP_SESSIONS_SUPPORT // do it with the session api |
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| 411 | zval param; |
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| 412 | zval *params[1]; |
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| 413 | /* |
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| 414 | if (php_session_register_module(&ps_mod_eaccelerator) != 0) { |
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| 415 | return 0; |
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| 416 | } |
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| 417 | */ |
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| 418 | if (eaccelerator_sessions_cache_place == eaccelerator_none) { |
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| 419 | return 0; |
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| 420 | } |
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| 421 | ZVAL_STRING (&func, "session_module_name", 0); |
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| 422 | INIT_ZVAL (param); |
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| 423 | params[0] = ¶m; |
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| 424 | ZVAL_STRING (params[0], "eaccelerator", 0); |
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| 425 | if (call_user_function (EG (function_table), NULL, &func, &retval, |
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| 426 | 1, params TSRMLS_CC) == FAILURE) { |
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| 427 | ret = 0; |
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| 428 | } |
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| 429 | zval_dtor (&retval); |
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| 430 | return ret; |
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| 431 | #else // register the functions as custom user functions |
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| 432 | zval *params[6]; |
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| 433 | int i; |
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| 434 | |
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| 435 | if (eaccelerator_sessions_cache_place == eaccelerator_none) { |
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| 436 | return 0; |
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| 437 | } |
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| 438 | if (eaccelerator_mm_instance == NULL) { |
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| 439 | return 0; |
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| 440 | } |
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| 441 | if (!zend_hash_exists |
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| 442 | (EG (function_table), "session_set_save_handler", |
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| 443 | sizeof ("session_set_save_handler"))) { |
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| 444 | return 0; |
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| 445 | } |
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| 446 | |
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| 447 | ZVAL_STRING (&func, "session_set_save_handler", 0); |
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| 448 | MAKE_STD_ZVAL (params[0]); |
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| 449 | ZVAL_STRING (params[0], "_eaccelerator_session_open", 1); |
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| 450 | MAKE_STD_ZVAL (params[1]); |
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| 451 | ZVAL_STRING (params[1], "_eaccelerator_session_close", 1); |
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| 452 | MAKE_STD_ZVAL (params[2]); |
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| 453 | ZVAL_STRING (params[2], "_eaccelerator_session_read", 1); |
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| 454 | MAKE_STD_ZVAL (params[3]); |
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| 455 | ZVAL_STRING (params[3], "_eaccelerator_session_write", 1); |
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| 456 | MAKE_STD_ZVAL (params[4]); |
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| 457 | ZVAL_STRING (params[4], "_eaccelerator_session_destroy", 1); |
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| 458 | MAKE_STD_ZVAL (params[5]); |
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| 459 | ZVAL_STRING (params[5], "_eaccelerator_session_gc", 1); |
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| 460 | if (call_user_function (EG (function_table), NULL, &func, &retval, |
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| 461 | 6, params TSRMLS_CC) == FAILURE) { |
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| 462 | ret = 0; |
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| 463 | } |
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| 464 | zval_dtor (&retval); |
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| 465 | for (i = 0; i < 6; i++) |
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| 466 | zval_ptr_dtor (¶ms[i]); |
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| 467 | return ret; |
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| 468 | #endif |
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| 469 | } |
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| 470 | |
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| 471 | /* function to call from a php script to register ea as session handler */ |
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| 472 | PHP_FUNCTION (eaccelerator_set_session_handlers) |
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| 473 | { |
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| 474 | if (eaccelerator_set_session_handlers (TSRMLS_C)) { |
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| 475 | RETURN_TRUE; |
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| 476 | } else { |
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| 477 | RETURN_FALSE; |
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| 478 | } |
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| 479 | } |
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| 480 | |
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| 481 | #endif /* HAVE_EACCELERATOR_SESSIONS */ |
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