wez             Tue Jul  1 09:07:37 2003 EDT

  Added files:                 
    /php-src/ext/sqlite sess_sqlite.c 

  Modified files:              
    /php-src/ext/sqlite config.m4 sqlite.c 
  Log:
  Add sqlite session handler.
  Modified (quite a bit!) patch from John Coggeshall.
  It compiles, but it otherwise untested.
  session.save_path == path to actual database file for the session.
  
  eg: session.save_path=/tmp/mysite-session.db
  
  
  
Index: php-src/ext/sqlite/config.m4
diff -u php-src/ext/sqlite/config.m4:1.16 php-src/ext/sqlite/config.m4:1.17
--- php-src/ext/sqlite/config.m4:1.16   Tue Jun 24 20:18:01 2003
+++ php-src/ext/sqlite/config.m4        Tue Jul  1 09:07:37 2003
@@ -1,4 +1,4 @@
-dnl $Id: config.m4,v 1.16 2003/06/25 00:18:01 sterling Exp $
+dnl $Id: config.m4,v 1.17 2003/07/01 13:07:37 wez Exp $
 dnl config.m4 for extension sqlite
 dnl vim:et:ts=2:sw=2
 
@@ -43,7 +43,7 @@
     ])
  
     PHP_SUBST(SQLITE_SHARED_LIBADD)
-    PHP_NEW_EXTENSION(sqlite, sqlite.c libsqlite/src/encode.c, $ext_shared)
+    PHP_NEW_EXTENSION(sqlite, sqlite.c sess_sqlite.c libsqlite/src/encode.c, 
$ext_shared)
   else
     # use bundled library
 
@@ -62,7 +62,7 @@
         libsqlite/src/vacuum.c libsqlite/src/copy.c \
         libsqlite/src/where.c libsqlite/src/trigger.c"
     
-    PHP_NEW_EXTENSION(sqlite, sqlite.c $sources, $ext_shared,,$PHP_SQLITE_CFLAGS)
+    PHP_NEW_EXTENSION(sqlite, sqlite.c sess_sqlite.c $sources, 
$ext_shared,,$PHP_SQLITE_CFLAGS)
     PHP_ADD_BUILD_DIR($ext_builddir/libsqlite)
     PHP_ADD_BUILD_DIR($ext_builddir/libsqlite/src)
     AC_CHECK_SIZEOF(char *,4)
Index: php-src/ext/sqlite/sqlite.c
diff -u php-src/ext/sqlite/sqlite.c:1.66 php-src/ext/sqlite/sqlite.c:1.67
--- php-src/ext/sqlite/sqlite.c:1.66    Fri Jun 27 10:30:26 2003
+++ php-src/ext/sqlite/sqlite.c Tue Jul  1 09:07:37 2003
@@ -17,7 +17,7 @@
    |          Marcus Boerger <[EMAIL PROTECTED]>                              |
    +----------------------------------------------------------------------+
 
-   $Id: sqlite.c,v 1.66 2003/06/27 14:30:26 edink Exp $ 
+   $Id: sqlite.c,v 1.67 2003/07/01 13:07:37 wez Exp $ 
 */
 
 #ifdef HAVE_CONFIG_H
@@ -29,6 +29,7 @@
 #include "php.h"
 #include "php_ini.h"
 #include "ext/standard/info.h"
+#include "ext/session/php_session.h"
 #include "php_sqlite.h"
 
 #if HAVE_TIME_H
@@ -57,6 +58,9 @@
 
 ZEND_DECLARE_MODULE_GLOBALS(sqlite)
 
+extern ps_module ps_mod_sqlite;
+#define ps_sqlite_ptr &ps_mod_sqlite
+
 extern int sqlite_encode_binary(const unsigned char *in, int n, unsigned char *out);
 extern int sqlite_decode_binary(const unsigned char *in, unsigned char *out);
 
@@ -878,6 +882,8 @@
 
        REGISTER_INI_ENTRIES();
 
+       php_session_register_module(ps_sqlite_ptr);
+       
        le_sqlite_db = zend_register_list_destructors_ex(php_sqlite_db_dtor, NULL, 
"sqlite database", module_number);
        le_sqlite_pdb = zend_register_list_destructors_ex(NULL, php_sqlite_db_dtor, 
"sqlite database (persistent)", module_number);
        le_sqlite_result = zend_register_list_destructors_ex(php_sqlite_result_dtor, 
NULL, "sqlite result", module_number);
@@ -938,7 +944,7 @@
 {
        php_info_print_table_start();
        php_info_print_table_header(2, "SQLite support", "enabled");
-       php_info_print_table_row(2, "PECL Module version", PHP_SQLITE_MODULE_VERSION " 
$Id: sqlite.c,v 1.66 2003/06/27 14:30:26 edink Exp $");
+       php_info_print_table_row(2, "PECL Module version", PHP_SQLITE_MODULE_VERSION " 
$Id: sqlite.c,v 1.67 2003/07/01 13:07:37 wez Exp $");
        php_info_print_table_row(2, "SQLite Library", sqlite_libversion());
        php_info_print_table_row(2, "SQLite Encoding", sqlite_libencoding());
        php_info_print_table_end();

Index: php-src/ext/sqlite/sess_sqlite.c
+++ php-src/ext/sqlite/sess_sqlite.c
/* 
   +----------------------------------------------------------------------+
   | PHP Version 4                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2003 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.0 of the PHP license,       |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_0.txt.                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | [EMAIL PROTECTED] so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: John Coggeshall <[EMAIL PROTECTED]>                              |
   |          Wez Furlong <[EMAIL PROTECTED]>                          |
   +----------------------------------------------------------------------+
 */

/* $Id: sess_sqlite.c,v 1.1 2003/07/01 13:07:37 wez Exp $ */

#include "php.h"
#include "ext/session/php_session.h"
#include <sqlite.h>

#define PS_SQLITE_DATA sqlite *db = (sqlite*)PS_GET_MOD_DATA()
extern int sqlite_encode_binary(const unsigned char *in, int n, unsigned char *out);
extern int sqlite_decode_binary(const unsigned char *in, unsigned char *out);

#define CREATE_TBL_QUERY        "CREATE TABLE session_data(sess_id TEXT PRIMARY KEY, 
value TEXT, updated INTEGER)"
#define INSERT_QUERY            "REPLACE INTO session_data VALUES('%q', '%q', %d)"
#define SELECT_QUERY            "SELECT value FROM session_data WHERE sess_id='%q' 
LIMIT 1"
#define GC_QUERY                        "DELETE FROM session_data WHERE (%d - updated) 
> %d"
#define DELETE_QUERY            "DELETE FROM session_data WHERE sess_id='%q'"

PS_FUNCS(sqlite);

ps_module ps_mod_sqlite = {
        PS_MOD(sqlite)
};

/* If you change the logic here, please also update the error message in
 * ps_sqlite_open() appropriately (code taken from ps_files_valid_key()) */

static int ps_sqlite_valid_key(const char *key)
{
        size_t len;
        const char *p;
        char c;
        int ret = 1;

        for (p = key; (c = *p); p++) {
                /* valid characters are a..z,A..Z,0..9 */
                if (!((c >= 'a' && c <= 'z')
                                || (c >= 'A' && c <= 'Z')
                                || (c >= '0' && c <= '9')
                                || c == ','
                                || c == '-')) {
                        ret = 0;
                        break;
                }
        }

        len = p - key;
        
        if (len == 0)
                ret = 0;
        
        return ret;
}

PS_OPEN_FUNC(sqlite) 
{
    char *filepath;
        char *errmsg = NULL;
    int spath_len, sname_len, fp_len;
        sqlite *db;

        /* TODO: do we need a safe_mode check here? */
        db = sqlite_open(save_path, 0666, &errmsg);
        if (db == NULL) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "SQLite: failed to 
open/create session database `%s' - %s", save_path, errmsg);
                sqlite_freemem(errmsg);
                return FAILURE;
        }

        /* allow up to 1 minute when busy */
        sqlite_busy_timeout(db, 60000);
    
    /* This will fail if the table already exists, but that's not a big problem. I'm
    unclear as to how to check for a table's existence in SQLite -- that would be 
better here. */
    sqlite_exec(db, CREATE_TBL_QUERY, NULL, NULL, NULL);
    
    PS_SET_MOD_DATA(db);

    return SUCCESS;
}

PS_CLOSE_FUNC(sqlite) 
{
        PS_SQLITE_DATA;

        sqlite_close(db);

        return SUCCESS;
}

PS_READ_FUNC(sqlite) 
{
        PS_SQLITE_DATA;
        char *query;
        sqlite_vm *vm;
        int colcount, result;
        const char **rowdata, **colnames;
        char *error;

        if (!ps_sqlite_valid_key(key)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "SQLite: The session id 
contains illegal characters, valid characters are a-z, A-Z, 0-9 and '-,'");
                return FAILURE;
        }

        query = sqlite_mprintf(SELECT_QUERY, key);
        if (query == NULL) {
                /* no memory */
                return FAILURE;
        }

        if (sqlite_compile(db, query, NULL, &vm, &error) != SQLITE_OK) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "SQLite: Could not compile 
session read query: %s", error);
                sqlite_freemem(error);
                sqlite_freemem(query);
                return FAILURE;
        }

        switch ((result = sqlite_step(vm, &colcount, &rowdata, &colnames))) {
                case SQLITE_ROW:
                        if (rowdata[0] == NULL) {
                                *vallen = 0;
                                *val = NULL;
                        } else {
                                *vallen = strlen(rowdata[0]);
                                *val = emalloc(*vallen);
                                *vallen = sqlite_decode_binary(rowdata[0], *val);
                                (*val)[*vallen] = '\0';
                        }
                        break;
                default:
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "SQLite: session 
read query failed: %s", error);
                        sqlite_freemem(error);
                        error = NULL;
        }
        
        if (SQLITE_OK != sqlite_finalize(vm, &error)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "SQLite: session read: 
error %s", error);
                sqlite_freemem(error);
                error = NULL;
        }

        sqlite_freemem(query);
        
        return *val == NULL ? FAILURE : SUCCESS;
}

PS_WRITE_FUNC(sqlite) 
{
        PS_SQLITE_DATA;
        char *error;
        int result = SUCCESS;
        time_t t;
        char *binary;
        int binlen;
        
        t = time(NULL);

        binary = emalloc((256 * vallen + 1262) / 253);
        binlen = sqlite_encode_binary((const unsigned char*)val, vallen, binary);
        
        if (SQLITE_OK != sqlite_exec_printf(db, INSERT_QUERY, NULL, NULL, &error, key, 
binary, t)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "SQLite: session write 
query failed: %s", error);
                sqlite_freemem(error);
                result = FAILURE;
        }

        efree(binary);

        return result;
}

PS_DESTROY_FUNC(sqlite) 
{
        PS_SQLITE_DATA;

        return SQLITE_OK == sqlite_exec_printf(db, DELETE_QUERY, NULL, NULL, NULL, 
key) ?
                SUCCESS : FAILURE;
}

PS_GC_FUNC(sqlite) 
{
        PS_SQLITE_DATA;
        time_t t = time(NULL);

        return SQLITE_OK == sqlite_exec_printf(db, GC_QUERY, NULL, NULL, NULL, t, 
maxlifetime) ?
                SUCCESS : FAILURE;
}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */

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