root/ext/wddx/wddx.c

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DEFINITIONS

This source file includes following definitions.
  1. wddx_stack_init
  2. wddx_stack_push
  3. wddx_stack_top
  4. wddx_stack_is_empty
  5. wddx_stack_destroy
  6. release_wddx_packet_rsrc
  7. PS_SERIALIZER_ENCODE_FUNC
  8. PS_SERIALIZER_DECODE_FUNC
  9. PHP_MINIT_FUNCTION
  10. PHP_MINFO_FUNCTION
  11. php_wddx_packet_start
  12. php_wddx_packet_end
  13. php_wddx_serialize_string
  14. php_wddx_serialize_number
  15. php_wddx_serialize_boolean
  16. php_wddx_serialize_unset
  17. php_wddx_serialize_object
  18. php_wddx_serialize_array
  19. php_wddx_serialize_var
  20. php_wddx_add_var
  21. php_wddx_push_element
  22. php_wddx_pop_element
  23. php_wddx_process_data
  24. php_wddx_deserialize_ex
  25. PHP_FUNCTION
  26. PHP_FUNCTION
  27. php_wddx_constructor
  28. php_wddx_destructor
  29. PHP_FUNCTION
  30. PHP_FUNCTION
  31. PHP_FUNCTION
  32. PHP_FUNCTION

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 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_01.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          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author: Andrei Zmievski <andrei@php.net>                             |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"

#if HAVE_WDDX

#include "ext/xml/expat_compat.h"
#include "php_wddx.h"
#include "php_wddx_api.h"

#define PHP_XML_INTERNAL
#include "ext/xml/php_xml.h"
#include "ext/standard/php_incomplete_class.h"
#include "ext/standard/base64.h"
#include "ext/standard/info.h"
#include "ext/standard/php_smart_str.h"
#include "ext/standard/html.h"
#include "ext/standard/php_string.h"
#include "ext/date/php_date.h"
#include "zend_globals.h"

#define WDDX_BUF_LEN                    256
#define PHP_CLASS_NAME_VAR              "php_class_name"

#define EL_ARRAY                                "array"
#define EL_BINARY                               "binary"
#define EL_BOOLEAN                              "boolean"
#define EL_CHAR                                 "char"
#define EL_CHAR_CODE                    "code"
#define EL_NULL                                 "null"
#define EL_NUMBER                               "number"
#define EL_PACKET                               "wddxPacket"
#define EL_STRING                               "string"
#define EL_STRUCT                               "struct"
#define EL_VALUE                                "value"
#define EL_VAR                                  "var"
#define EL_NAME                         "name"
#define EL_VERSION                              "version"
#define EL_RECORDSET                    "recordset"
#define EL_FIELD                                "field"
#define EL_DATETIME                             "dateTime"

#define php_wddx_deserialize(a,b) \
        php_wddx_deserialize_ex((a)->value.str.val, (a)->value.str.len, (b))

#define SET_STACK_VARNAME                                                       \
                if (stack->varname) {                                           \
                        ent.varname = estrdup(stack->varname);  \
                        efree(stack->varname);                                  \
                        stack->varname = NULL;                                  \
                } else                                                                          \
                        ent.varname = NULL;                                             \
                        
static int le_wddx;

typedef struct {
        zval *data;
        enum {
                ST_ARRAY,
                ST_BOOLEAN,
                ST_NULL,
                ST_NUMBER,
                ST_STRING,
                ST_BINARY,
                ST_STRUCT,
                ST_RECORDSET,
                ST_FIELD,
                ST_DATETIME
        } type;
        char *varname;
} st_entry;

typedef struct {
        int top, max;
        char *varname;
        zend_bool done;
        void **elements;
} wddx_stack;


static void php_wddx_process_data(void *user_data, const XML_Char *s, int len);

/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_wddx_serialize_value, 0, 0, 1)
        ZEND_ARG_INFO(0, var)
        ZEND_ARG_INFO(0, comment)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_wddx_serialize_vars, 0, 0, 1)
        ZEND_ARG_INFO(0, var_name)
        ZEND_ARG_INFO(0, ...)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_wddx_serialize_start, 0, 0, 0)
        ZEND_ARG_INFO(0, comment)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_wddx_packet_end, 0, 0, 1)
        ZEND_ARG_INFO(0, packet_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_wddx_add_vars, 0, 0, 2)
        ZEND_ARG_INFO(0, packet_id)
        ZEND_ARG_INFO(0, var_name)
        ZEND_ARG_INFO(0, ...)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_wddx_deserialize, 0, 0, 1)
        ZEND_ARG_INFO(0, packet)
ZEND_END_ARG_INFO()
/* }}} */

/* {{{ wddx_functions[]
 */
const zend_function_entry wddx_functions[] = {
        PHP_FE(wddx_serialize_value, arginfo_wddx_serialize_value)
        PHP_FE(wddx_serialize_vars,     arginfo_wddx_serialize_vars)
        PHP_FE(wddx_packet_start,       arginfo_wddx_serialize_start)
        PHP_FE(wddx_packet_end,         arginfo_wddx_packet_end)
        PHP_FE(wddx_add_vars,           arginfo_wddx_add_vars)
        PHP_FE(wddx_deserialize,        arginfo_wddx_deserialize)
        PHP_FE_END
};
/* }}} */

PHP_MINIT_FUNCTION(wddx);
PHP_MINFO_FUNCTION(wddx);

/* {{{ dynamically loadable module stuff */
#ifdef COMPILE_DL_WDDX
ZEND_GET_MODULE(wddx)
#endif /* COMPILE_DL_WDDX */
/* }}} */

/* {{{ wddx_module_entry
 */
zend_module_entry wddx_module_entry = {
        STANDARD_MODULE_HEADER,
        "wddx",
        wddx_functions,
        PHP_MINIT(wddx),
        NULL,
        NULL,
        NULL,
        PHP_MINFO(wddx),
    NO_VERSION_YET,
        STANDARD_MODULE_PROPERTIES
};
/* }}} */

/* {{{ wddx_stack_init
 */     
static int wddx_stack_init(wddx_stack *stack)
{
        stack->top = 0;
        stack->elements = (void **) safe_emalloc(sizeof(void **), STACK_BLOCK_SIZE, 0);
        stack->max = STACK_BLOCK_SIZE;
        stack->varname = NULL;
        stack->done = 0;

        return SUCCESS;
}
/* }}} */

/* {{{ wddx_stack_push
 */
static int wddx_stack_push(wddx_stack *stack, void *element, int size)
{
        if (stack->top >= stack->max) {         /* we need to allocate more memory */
                stack->elements = (void **) erealloc(stack->elements,
                                   (sizeof(void **) * (stack->max += STACK_BLOCK_SIZE)));
        }
        stack->elements[stack->top] = (void *) emalloc(size);
        memcpy(stack->elements[stack->top], element, size);
        return stack->top++;
}
/* }}} */

/* {{{ wddx_stack_top
 */
static int wddx_stack_top(wddx_stack *stack, void **element)
{
        if (stack->top > 0) {
                *element = stack->elements[stack->top - 1];
                return SUCCESS;
        } else {
                *element = NULL;
                return FAILURE;
        }
}
/* }}} */

/* {{{ wddx_stack_is_empty
 */
static int wddx_stack_is_empty(wddx_stack *stack)
{
        if (stack->top == 0) {
                return 1;
        } else {
                return 0;
        }
}
/* }}} */

/* {{{ wddx_stack_destroy
 */
static int wddx_stack_destroy(wddx_stack *stack)
{
        register int i;

        if (stack->elements) {
                for (i = 0; i < stack->top; i++) {
                        if (((st_entry *)stack->elements[i])->data)     {
                                zval_ptr_dtor(&((st_entry *)stack->elements[i])->data);
                        }
                        if (((st_entry *)stack->elements[i])->varname) {
                                efree(((st_entry *)stack->elements[i])->varname);
                        }
                        efree(stack->elements[i]);
                }               
                efree(stack->elements);
        }
        return SUCCESS;
}
/* }}} */

/* {{{ release_wddx_packet_rsrc
 */
static void release_wddx_packet_rsrc(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
        smart_str *str = (smart_str *)rsrc->ptr;
        smart_str_free(str);
        efree(str);
}
/* }}} */

#include "ext/session/php_session.h"

#if HAVE_PHP_SESSION && !defined(COMPILE_DL_SESSION)
/* {{{ PS_SERIALIZER_ENCODE_FUNC
 */
PS_SERIALIZER_ENCODE_FUNC(wddx)
{
        wddx_packet *packet;
        PS_ENCODE_VARS;

        packet = php_wddx_constructor();

        php_wddx_packet_start(packet, NULL, 0);
        php_wddx_add_chunk_static(packet, WDDX_STRUCT_S);
        
        PS_ENCODE_LOOP(
                php_wddx_serialize_var(packet, *struc, key, key_length TSRMLS_CC);
        );
        
        php_wddx_add_chunk_static(packet, WDDX_STRUCT_E);
        php_wddx_packet_end(packet);
        *newstr = php_wddx_gather(packet);
        php_wddx_destructor(packet);
        
        if (newlen) {
                *newlen = strlen(*newstr);
        }

        return SUCCESS;
}
/* }}} */

/* {{{ PS_SERIALIZER_DECODE_FUNC
 */
PS_SERIALIZER_DECODE_FUNC(wddx)
{
        zval *retval;
        zval **ent;
        char *key;
        uint key_length;
        char tmp[128];
        ulong idx;
        int hash_type;
        int ret;

        if (vallen == 0) {
                return SUCCESS;
        }
        
        MAKE_STD_ZVAL(retval);

        if ((ret = php_wddx_deserialize_ex((char *)val, vallen, retval)) == SUCCESS) {

                for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(retval));
                         zend_hash_get_current_data(Z_ARRVAL_P(retval), (void **) &ent) == SUCCESS;
                         zend_hash_move_forward(Z_ARRVAL_P(retval))) {
                        hash_type = zend_hash_get_current_key_ex(Z_ARRVAL_P(retval), &key, &key_length, &idx, 0, NULL);

                        switch (hash_type) {
                                case HASH_KEY_IS_LONG:
                                        key_length = slprintf(tmp, sizeof(tmp), "%ld", idx) + 1;
                                        key = tmp;
                                        /* fallthru */
                                case HASH_KEY_IS_STRING:
                                        php_set_session_var(key, key_length-1, *ent, NULL TSRMLS_CC);
                                        PS_ADD_VAR(key);
                        }
                }
        }

        zval_ptr_dtor(&retval);

        return ret;
}
/* }}} */
#endif

/* {{{ PHP_MINIT_FUNCTION
 */
PHP_MINIT_FUNCTION(wddx)
{
        le_wddx = zend_register_list_destructors_ex(release_wddx_packet_rsrc, NULL, "wddx", module_number);

#if HAVE_PHP_SESSION && !defined(COMPILE_DL_SESSION)
        php_session_register_serializer("wddx",
                                                                        PS_SERIALIZER_ENCODE_NAME(wddx),
                                                                        PS_SERIALIZER_DECODE_NAME(wddx));
#endif  

        return SUCCESS;
}
/* }}} */

/* {{{ PHP_MINFO_FUNCTION
 */
PHP_MINFO_FUNCTION(wddx)
{
        php_info_print_table_start();
#if HAVE_PHP_SESSION && !defined(COMPILE_DL_SESSION)
        php_info_print_table_header(2, "WDDX Support", "enabled" );
        php_info_print_table_row(2, "WDDX Session Serializer", "enabled" );
#else
        php_info_print_table_row(2, "WDDX Support", "enabled" );
#endif
        php_info_print_table_end();
}
/* }}} */

/* {{{ php_wddx_packet_start
 */
void php_wddx_packet_start(wddx_packet *packet, char *comment, int comment_len)
{
        php_wddx_add_chunk_static(packet, WDDX_PACKET_S);
        if (comment) {
                php_wddx_add_chunk_static(packet, WDDX_HEADER_S);
                php_wddx_add_chunk_static(packet, WDDX_COMMENT_S);
                php_wddx_add_chunk_ex(packet, comment, comment_len);
                php_wddx_add_chunk_static(packet, WDDX_COMMENT_E);
                php_wddx_add_chunk_static(packet, WDDX_HEADER_E);
        } else {
                php_wddx_add_chunk_static(packet, WDDX_HEADER);
        }
        php_wddx_add_chunk_static(packet, WDDX_DATA_S);
}
/* }}} */

/* {{{ php_wddx_packet_end
 */
void php_wddx_packet_end(wddx_packet *packet)
{
        php_wddx_add_chunk_static(packet, WDDX_DATA_E);
        php_wddx_add_chunk_static(packet, WDDX_PACKET_E);       
}
/* }}} */

#define FLUSH_BUF()                               \
        if (l > 0) {                                  \
                php_wddx_add_chunk_ex(packet, buf, l);    \
                l = 0;                                    \
        }

/* {{{ php_wddx_serialize_string
 */
static void php_wddx_serialize_string(wddx_packet *packet, zval *var TSRMLS_DC)
{
        php_wddx_add_chunk_static(packet, WDDX_STRING_S);

        if (Z_STRLEN_P(var) > 0) {
                char *buf;
                size_t buf_len;

                buf = php_escape_html_entities(Z_STRVAL_P(var), Z_STRLEN_P(var), &buf_len, 0, ENT_QUOTES, NULL TSRMLS_CC);

                php_wddx_add_chunk_ex(packet, buf, buf_len);

                efree(buf);
        }
        php_wddx_add_chunk_static(packet, WDDX_STRING_E);
}
/* }}} */

/* {{{ php_wddx_serialize_number
 */
static void php_wddx_serialize_number(wddx_packet *packet, zval *var)
{
        char tmp_buf[WDDX_BUF_LEN];
        zval tmp;
        
        tmp = *var;
        zval_copy_ctor(&tmp);
        convert_to_string(&tmp);
        snprintf(tmp_buf, sizeof(tmp_buf), WDDX_NUMBER, Z_STRVAL(tmp));
        zval_dtor(&tmp);

        php_wddx_add_chunk(packet, tmp_buf);    
}
/* }}} */

/* {{{ php_wddx_serialize_boolean
 */
static void php_wddx_serialize_boolean(wddx_packet *packet, zval *var)
{
        php_wddx_add_chunk(packet, Z_LVAL_P(var) ? WDDX_BOOLEAN_TRUE : WDDX_BOOLEAN_FALSE);
}
/* }}} */

/* {{{ php_wddx_serialize_unset
 */
static void php_wddx_serialize_unset(wddx_packet *packet)
{
        php_wddx_add_chunk_static(packet, WDDX_NULL);
}
/* }}} */

/* {{{ php_wddx_serialize_object
 */
static void php_wddx_serialize_object(wddx_packet *packet, zval *obj)
{
/* OBJECTS_FIXME */
        zval **ent, *fname, **varname;
        zval *retval = NULL;
        const char *key;
        ulong idx;
        char tmp_buf[WDDX_BUF_LEN];
        HashTable *objhash, *sleephash;
        TSRMLS_FETCH();

        MAKE_STD_ZVAL(fname);
        ZVAL_STRING(fname, "__sleep", 1);

        /*
         * We try to call __sleep() method on object. It's supposed to return an
         * array of property names to be serialized.
         */
        if (call_user_function_ex(CG(function_table), &obj, fname, &retval, 0, 0, 1, NULL TSRMLS_CC) == SUCCESS) {
                if (retval && (sleephash = HASH_OF(retval))) {
                        PHP_CLASS_ATTRIBUTES;
                        
                        PHP_SET_CLASS_ATTRIBUTES(obj);

                        php_wddx_add_chunk_static(packet, WDDX_STRUCT_S);
                        snprintf(tmp_buf, WDDX_BUF_LEN, WDDX_VAR_S, PHP_CLASS_NAME_VAR);
                        php_wddx_add_chunk(packet, tmp_buf);
                        php_wddx_add_chunk_static(packet, WDDX_STRING_S);
                        php_wddx_add_chunk_ex(packet, class_name, name_len);
                        php_wddx_add_chunk_static(packet, WDDX_STRING_E);
                        php_wddx_add_chunk_static(packet, WDDX_VAR_E);

                        PHP_CLEANUP_CLASS_ATTRIBUTES();

                        objhash = HASH_OF(obj);
                        
                        for (zend_hash_internal_pointer_reset(sleephash);
                                 zend_hash_get_current_data(sleephash, (void **)&varname) == SUCCESS;
                                 zend_hash_move_forward(sleephash)) {
                                if (Z_TYPE_PP(varname) != IS_STRING) {
                                        php_error_docref(NULL TSRMLS_CC, E_NOTICE, "__sleep should return an array only containing the names of instance-variables to serialize.");
                                        continue;
                                }

                                if (zend_hash_find(objhash, Z_STRVAL_PP(varname), Z_STRLEN_PP(varname)+1, (void **)&ent) == SUCCESS) {
                                        php_wddx_serialize_var(packet, *ent, Z_STRVAL_PP(varname), Z_STRLEN_PP(varname) TSRMLS_CC);
                                }
                        }
                        
                        php_wddx_add_chunk_static(packet, WDDX_STRUCT_E);
                }
        } else {
                uint key_len;

                PHP_CLASS_ATTRIBUTES;

                PHP_SET_CLASS_ATTRIBUTES(obj);

                php_wddx_add_chunk_static(packet, WDDX_STRUCT_S);
                snprintf(tmp_buf, WDDX_BUF_LEN, WDDX_VAR_S, PHP_CLASS_NAME_VAR);
                php_wddx_add_chunk(packet, tmp_buf);
                php_wddx_add_chunk_static(packet, WDDX_STRING_S);
                php_wddx_add_chunk_ex(packet, class_name, name_len);
                php_wddx_add_chunk_static(packet, WDDX_STRING_E);
                php_wddx_add_chunk_static(packet, WDDX_VAR_E);

                PHP_CLEANUP_CLASS_ATTRIBUTES();
                
                objhash = HASH_OF(obj);
                for (zend_hash_internal_pointer_reset(objhash);
                         zend_hash_get_current_data(objhash, (void**)&ent) == SUCCESS;
                         zend_hash_move_forward(objhash)) {
                        if (*ent == obj) {
                                continue;
                        }

                        if (zend_hash_get_current_key_ex(objhash, &key, &key_len, &idx, 0, NULL) == HASH_KEY_IS_STRING) {
                                const char *class_name, *prop_name;
                                
                                zend_unmangle_property_name(key, key_len-1, &class_name, &prop_name);
                                php_wddx_serialize_var(packet, *ent, prop_name, strlen(prop_name)+1 TSRMLS_CC);
                        } else {
                                key_len = slprintf(tmp_buf, sizeof(tmp_buf), "%ld", idx);
                                php_wddx_serialize_var(packet, *ent, tmp_buf, key_len TSRMLS_CC);
                        }
                }
                php_wddx_add_chunk_static(packet, WDDX_STRUCT_E);
        }

        zval_dtor(fname);
        FREE_ZVAL(fname);

        if (retval) {
                zval_ptr_dtor(&retval);
        }
}
/* }}} */

/* {{{ php_wddx_serialize_array
 */
static void php_wddx_serialize_array(wddx_packet *packet, zval *arr)
{
        zval **ent;
        char *key;
        uint key_len;
        int is_struct = 0, ent_type;
        ulong idx;
        HashTable *target_hash;
        char tmp_buf[WDDX_BUF_LEN];
        ulong ind = 0;
        int type;
        TSRMLS_FETCH();

        target_hash = HASH_OF(arr);

        for (zend_hash_internal_pointer_reset(target_hash);
                 zend_hash_get_current_data(target_hash, (void**)&ent) == SUCCESS;
                 zend_hash_move_forward(target_hash)) {

                type = zend_hash_get_current_key(target_hash, &key, &idx, 0);

                if (type == HASH_KEY_IS_STRING) {
                        is_struct = 1;
                        break;
                }

                if (idx != ind) {
                        is_struct = 1;
                        break;
                }

                ind++;
        }

        if (is_struct) {
                php_wddx_add_chunk_static(packet, WDDX_STRUCT_S);
        } else {
                snprintf(tmp_buf, sizeof(tmp_buf), WDDX_ARRAY_S, zend_hash_num_elements(target_hash));
                php_wddx_add_chunk(packet, tmp_buf);
        }

        for (zend_hash_internal_pointer_reset(target_hash);
                 zend_hash_get_current_data(target_hash, (void**)&ent) == SUCCESS;
                 zend_hash_move_forward(target_hash)) {
                if (*ent == arr) {
                        continue;
                }

                if (is_struct) {
                        ent_type = zend_hash_get_current_key_ex(target_hash, &key, &key_len, &idx, 0, NULL);

                        if (ent_type == HASH_KEY_IS_STRING) {
                                php_wddx_serialize_var(packet, *ent, key, key_len TSRMLS_CC);
                        } else {
                                key_len = slprintf(tmp_buf, sizeof(tmp_buf), "%ld", idx);
                                php_wddx_serialize_var(packet, *ent, tmp_buf, key_len TSRMLS_CC);
                        }
                } else {
                        php_wddx_serialize_var(packet, *ent, NULL, 0 TSRMLS_CC);
                }
        }
        
        if (is_struct) {
                php_wddx_add_chunk_static(packet, WDDX_STRUCT_E);
        } else {
                php_wddx_add_chunk_static(packet, WDDX_ARRAY_E);
        }
}
/* }}} */

/* {{{ php_wddx_serialize_var
 */
void php_wddx_serialize_var(wddx_packet *packet, zval *var, char *name, int name_len TSRMLS_DC)
{
        HashTable *ht;

        if (name) {
                size_t name_esc_len;
                char *tmp_buf, *name_esc;

                name_esc = php_escape_html_entities(name, name_len, &name_esc_len, 0, ENT_QUOTES, NULL TSRMLS_CC);
                tmp_buf = emalloc(name_esc_len + sizeof(WDDX_VAR_S));
                snprintf(tmp_buf, name_esc_len + sizeof(WDDX_VAR_S), WDDX_VAR_S, name_esc);
                php_wddx_add_chunk(packet, tmp_buf);
                efree(tmp_buf);
                efree(name_esc);
        }
        
        switch(Z_TYPE_P(var)) {
                case IS_STRING:
                        php_wddx_serialize_string(packet, var TSRMLS_CC);
                        break;
                        
                case IS_LONG:
                case IS_DOUBLE:
                        php_wddx_serialize_number(packet, var);
                        break;

                case IS_BOOL:
                        php_wddx_serialize_boolean(packet, var);
                        break;

                case IS_NULL:
                        php_wddx_serialize_unset(packet);
                        break;
                
                case IS_ARRAY:
                        ht = Z_ARRVAL_P(var);
                        if (ht->nApplyCount > 1) {
                                php_error_docref(NULL TSRMLS_CC, E_RECOVERABLE_ERROR, "WDDX doesn't support circular references");
                                return;
                        }
                        ht->nApplyCount++;                                                                                                                      
                        php_wddx_serialize_array(packet, var);
                        ht->nApplyCount--;
                        break;

                case IS_OBJECT:
                        ht = Z_OBJPROP_P(var);
                        if (ht->nApplyCount > 1) {
                                php_error_docref(NULL TSRMLS_CC, E_RECOVERABLE_ERROR, "WDDX doesn't support circular references");
                                return;
                        }
                        ht->nApplyCount++;
                        php_wddx_serialize_object(packet, var);
                        ht->nApplyCount--;
                        break;
        }
        
        if (name) {
                php_wddx_add_chunk_static(packet, WDDX_VAR_E);
        }
}
/* }}} */

/* {{{ php_wddx_add_var
 */
static void php_wddx_add_var(wddx_packet *packet, zval *name_var)
{
        zval **val;
        HashTable *target_hash;
        TSRMLS_FETCH();

        if (Z_TYPE_P(name_var) == IS_STRING) {
                if (!EG(active_symbol_table)) {
                        zend_rebuild_symbol_table(TSRMLS_C);
                }
                if (zend_hash_find(EG(active_symbol_table), Z_STRVAL_P(name_var),
                                                        Z_STRLEN_P(name_var)+1, (void**)&val) != FAILURE) {
                        php_wddx_serialize_var(packet, *val, Z_STRVAL_P(name_var), Z_STRLEN_P(name_var) TSRMLS_CC);
                }               
        } else if (Z_TYPE_P(name_var) == IS_ARRAY || Z_TYPE_P(name_var) == IS_OBJECT)   {
                int is_array = Z_TYPE_P(name_var) == IS_ARRAY;
                
                target_hash = HASH_OF(name_var);
                
                if (is_array && target_hash->nApplyCount > 1) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "recursion detected");
                        return;
                }

                zend_hash_internal_pointer_reset(target_hash);

                while(zend_hash_get_current_data(target_hash, (void**)&val) == SUCCESS) {
                        if (is_array) {
                                target_hash->nApplyCount++;
                        }

                        php_wddx_add_var(packet, *val);

                        if (is_array) {
                                target_hash->nApplyCount--;
                        }
                        zend_hash_move_forward(target_hash);
                }
        }
}
/* }}} */

/* {{{ php_wddx_push_element
 */
static void php_wddx_push_element(void *user_data, const XML_Char *name, const XML_Char **atts)
{
        st_entry ent;
        wddx_stack *stack = (wddx_stack *)user_data;
        
        if (!strcmp(name, EL_PACKET)) {
                int i;
                
                if (atts) for (i=0; atts[i]; i++) {
                        if (!strcmp(atts[i], EL_VERSION)) {
                                /* nothing for now */
                        }
                }
        } else if (!strcmp(name, EL_STRING)) {
                ent.type = ST_STRING;
                SET_STACK_VARNAME;
                
                ALLOC_ZVAL(ent.data);
                INIT_PZVAL(ent.data);
                Z_TYPE_P(ent.data) = IS_STRING;
                Z_STRVAL_P(ent.data) = STR_EMPTY_ALLOC();
                Z_STRLEN_P(ent.data) = 0;
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_BINARY)) {
                ent.type = ST_BINARY;
                SET_STACK_VARNAME;
                
                ALLOC_ZVAL(ent.data);
                INIT_PZVAL(ent.data);
                Z_TYPE_P(ent.data) = IS_STRING;
                Z_STRVAL_P(ent.data) = STR_EMPTY_ALLOC();
                Z_STRLEN_P(ent.data) = 0;
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_CHAR)) {
                int i;
                
                if (atts) for (i = 0; atts[i]; i++) {
                        if (!strcmp(atts[i], EL_CHAR_CODE) && atts[++i] && atts[i][0]) {
                                char tmp_buf[2];

                                snprintf(tmp_buf, sizeof(tmp_buf), "%c", (char)strtol(atts[i], NULL, 16));
                                php_wddx_process_data(user_data, tmp_buf, strlen(tmp_buf));
                                break;
                        }
                }
        } else if (!strcmp(name, EL_NUMBER)) {
                ent.type = ST_NUMBER;
                SET_STACK_VARNAME;
                
                ALLOC_ZVAL(ent.data);
                INIT_PZVAL(ent.data);
                Z_TYPE_P(ent.data) = IS_LONG;
                Z_LVAL_P(ent.data) = 0;
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_BOOLEAN)) {
                int i;

                if (atts) for (i = 0; atts[i]; i++) {
                        if (!strcmp(atts[i], EL_VALUE) && atts[++i] && atts[i][0]) {
                                ent.type = ST_BOOLEAN;
                                SET_STACK_VARNAME;

                                ALLOC_ZVAL(ent.data);
                                INIT_PZVAL(ent.data);
                                Z_TYPE_P(ent.data) = IS_BOOL;
                                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
                                php_wddx_process_data(user_data, atts[i], strlen(atts[i]));
                                break;
                        }
                }
        } else if (!strcmp(name, EL_NULL)) {
                ent.type = ST_NULL;
                SET_STACK_VARNAME;

                ALLOC_ZVAL(ent.data);
                INIT_PZVAL(ent.data);
                ZVAL_NULL(ent.data);
                
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_ARRAY)) {
                ent.type = ST_ARRAY;
                SET_STACK_VARNAME;
                
                ALLOC_ZVAL(ent.data);
                array_init(ent.data);
                INIT_PZVAL(ent.data);
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_STRUCT)) {
                ent.type = ST_STRUCT;
                SET_STACK_VARNAME;
                
                ALLOC_ZVAL(ent.data);
                array_init(ent.data);
                INIT_PZVAL(ent.data);
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_VAR)) {
                int i;
                
                if (atts) for (i = 0; atts[i]; i++) {
                        if (!strcmp(atts[i], EL_NAME) && atts[++i] && atts[i][0]) {
                                stack->varname = estrdup(atts[i]);
                                break;
                        }
                }
        } else if (!strcmp(name, EL_RECORDSET)) {
                int i;

                ent.type = ST_RECORDSET;
                SET_STACK_VARNAME;
                MAKE_STD_ZVAL(ent.data);
                array_init(ent.data);

                if (atts) for (i = 0; atts[i]; i++) {
                        if (!strcmp(atts[i], "fieldNames") && atts[++i] && atts[i][0]) {
                                zval *tmp;
                                char *key;
                                char *p1, *p2, *endp;

                                endp = (char *)atts[i] + strlen(atts[i]);
                                p1 = (char *)atts[i];
                                while ((p2 = php_memnstr(p1, ",", sizeof(",")-1, endp)) != NULL) {
                                        key = estrndup(p1, p2 - p1);
                                        MAKE_STD_ZVAL(tmp);
                                        array_init(tmp);
                                        add_assoc_zval_ex(ent.data, key, p2 - p1 + 1, tmp);
                                        p1 = p2 + sizeof(",")-1;
                                        efree(key);
                                }

                                if (p1 <= endp) {
                                        MAKE_STD_ZVAL(tmp);
                                        array_init(tmp);
                                        add_assoc_zval_ex(ent.data, p1, endp - p1 + 1, tmp);
                                }

                                break;
                        }
                }

                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_FIELD)) {
                int i;
                st_entry ent;

                ent.type = ST_FIELD;
                ent.varname = NULL;
                ent.data = NULL;

                if (atts) for (i = 0; atts[i]; i++) {
                        if (!strcmp(atts[i], EL_NAME) && atts[++i] && atts[i][0]) {
                                st_entry *recordset;
                                zval **field;
 
                                if (wddx_stack_top(stack, (void**)&recordset) == SUCCESS &&
                                        recordset->type == ST_RECORDSET &&
                                        zend_hash_find(Z_ARRVAL_P(recordset->data), (char*)atts[i], strlen(atts[i])+1, (void**)&field) == SUCCESS) {
                                        ent.data = *field;
                                }
                                
                                break;
                        }
                }

                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        } else if (!strcmp(name, EL_DATETIME)) {
                ent.type = ST_DATETIME;
                SET_STACK_VARNAME;
                
                ALLOC_ZVAL(ent.data);
                INIT_PZVAL(ent.data);
                Z_TYPE_P(ent.data) = IS_LONG;
                wddx_stack_push((wddx_stack *)stack, &ent, sizeof(st_entry));
        }
}
/* }}} */

/* {{{ php_wddx_pop_element
 */
static void php_wddx_pop_element(void *user_data, const XML_Char *name)
{
        st_entry                        *ent1, *ent2;
        wddx_stack                      *stack = (wddx_stack *)user_data;
        HashTable                       *target_hash;
        zend_class_entry        **pce;
        zval                            *obj;
        zval                            *tmp;
        TSRMLS_FETCH();

/* OBJECTS_FIXME */
        if (stack->top == 0) {
                return;
        }

        if (!strcmp(name, EL_STRING) || !strcmp(name, EL_NUMBER) ||
                !strcmp(name, EL_BOOLEAN) || !strcmp(name, EL_NULL) ||
                !strcmp(name, EL_ARRAY) || !strcmp(name, EL_STRUCT) ||
                !strcmp(name, EL_RECORDSET) || !strcmp(name, EL_BINARY) ||
                !strcmp(name, EL_DATETIME)) {
                wddx_stack_top(stack, (void**)&ent1);

                if (!strcmp(name, EL_BINARY)) {
                        int new_len=0;
                        unsigned char *new_str;

                        new_str = php_base64_decode(Z_STRVAL_P(ent1->data), Z_STRLEN_P(ent1->data), &new_len);
                        STR_FREE(Z_STRVAL_P(ent1->data));
                        Z_STRVAL_P(ent1->data) = new_str;
                        Z_STRLEN_P(ent1->data) = new_len;
                }

                /* Call __wakeup() method on the object. */
                if (Z_TYPE_P(ent1->data) == IS_OBJECT) {
                        zval *fname, *retval = NULL;

                        MAKE_STD_ZVAL(fname);
                        ZVAL_STRING(fname, "__wakeup", 1);

                        call_user_function_ex(NULL, &ent1->data, fname, &retval, 0, 0, 0, NULL TSRMLS_CC);

                        zval_dtor(fname);
                        FREE_ZVAL(fname);
                        if (retval) {
                                zval_ptr_dtor(&retval);
                        }
                }

                if (stack->top > 1) {
                        stack->top--;
                        wddx_stack_top(stack, (void**)&ent2);
                        
                        /* if non-existent field */
                        if (ent2->type == ST_FIELD && ent2->data == NULL) {
                                zval_ptr_dtor(&ent1->data);
                                efree(ent1);
                                return;
                        }
                        
                        if (Z_TYPE_P(ent2->data) == IS_ARRAY || Z_TYPE_P(ent2->data) == IS_OBJECT) {
                                target_hash = HASH_OF(ent2->data);

                                if (ent1->varname) {
                                        if (!strcmp(ent1->varname, PHP_CLASS_NAME_VAR) &&
                                                Z_TYPE_P(ent1->data) == IS_STRING && Z_STRLEN_P(ent1->data)) {
                                                zend_bool incomplete_class = 0;

                                                zend_str_tolower(Z_STRVAL_P(ent1->data), Z_STRLEN_P(ent1->data));
                                                if (zend_hash_find(EG(class_table), Z_STRVAL_P(ent1->data),
                                                                                   Z_STRLEN_P(ent1->data)+1, (void **) &pce)==FAILURE) {
                                                        incomplete_class = 1;
                                                        pce = &PHP_IC_ENTRY;
                                                }

                                                /* Initialize target object */
                                                MAKE_STD_ZVAL(obj);
                                                object_init_ex(obj, *pce);
                                                
                                                /* Merge current hashtable with object's default properties */
                                                zend_hash_merge(Z_OBJPROP_P(obj),
                                                                                Z_ARRVAL_P(ent2->data),
                                                                                (void (*)(void *)) zval_add_ref,
                                                                                (void *) &tmp, sizeof(zval *), 0);

                                                if (incomplete_class) {
                                                        php_store_class_name(obj, Z_STRVAL_P(ent1->data), Z_STRLEN_P(ent1->data));
                                                }

                                                /* Clean up old array entry */
                                                zval_ptr_dtor(&ent2->data);
                                                
                                                /* Set stack entry to point to the newly created object */
                                                ent2->data = obj;
                                                
                                                /* Clean up class name var entry */
                                                zval_ptr_dtor(&ent1->data);
                                        } else if (Z_TYPE_P(ent2->data) == IS_OBJECT) {
                                                zend_class_entry *old_scope = EG(scope);
        
                                                EG(scope) = Z_OBJCE_P(ent2->data);
                                                Z_DELREF_P(ent1->data);
                                                add_property_zval(ent2->data, ent1->varname, ent1->data);
                                                EG(scope) = old_scope;
                                        } else {
                                                zend_symtable_update(target_hash, ent1->varname, strlen(ent1->varname)+1, &ent1->data, sizeof(zval *), NULL);
                                        }
                                        efree(ent1->varname);
                                } else  {
                                        zend_hash_next_index_insert(target_hash, &ent1->data, sizeof(zval *), NULL);
                                }
                        }
                        efree(ent1);
                } else {
                        stack->done = 1;
                }
        } else if (!strcmp(name, EL_VAR) && stack->varname) {
                efree(stack->varname);
        } else if (!strcmp(name, EL_FIELD)) {
                st_entry *ent;
                wddx_stack_top(stack, (void **)&ent);
                efree(ent);
                stack->top--;
        }
}
/* }}} */

/* {{{ php_wddx_process_data
 */
static void php_wddx_process_data(void *user_data, const XML_Char *s, int len)
{
        st_entry *ent;
        wddx_stack *stack = (wddx_stack *)user_data;
        TSRMLS_FETCH();

        if (!wddx_stack_is_empty(stack) && !stack->done) {
                wddx_stack_top(stack, (void**)&ent);
                switch (Z_TYPE_P(ent)) {
                        case ST_STRING: 
                                if (Z_STRLEN_P(ent->data) == 0) {
                                        STR_FREE(Z_STRVAL_P(ent->data));
                                        Z_STRVAL_P(ent->data) = estrndup(s, len);
                                        Z_STRLEN_P(ent->data) = len;
                                } else {
                                        Z_STRVAL_P(ent->data) = erealloc(Z_STRVAL_P(ent->data), Z_STRLEN_P(ent->data) + len + 1);
                                        memcpy(Z_STRVAL_P(ent->data) + Z_STRLEN_P(ent->data), s, len);
                                        Z_STRLEN_P(ent->data) += len;
                                        Z_STRVAL_P(ent->data)[Z_STRLEN_P(ent->data)] = '\0';
                                }
                                break;

                        case ST_BINARY:
                                if (Z_STRLEN_P(ent->data) == 0) {
                                        STR_FREE(Z_STRVAL_P(ent->data));
                                        Z_STRVAL_P(ent->data) = estrndup(s, len + 1);
                                } else {
                                        Z_STRVAL_P(ent->data) = erealloc(Z_STRVAL_P(ent->data), Z_STRLEN_P(ent->data) + len + 1);
                                        memcpy(Z_STRVAL_P(ent->data) + Z_STRLEN_P(ent->data), s, len);
                                }
                                Z_STRLEN_P(ent->data) += len;
                                Z_STRVAL_P(ent->data)[Z_STRLEN_P(ent->data)] = '\0';
                                break;

                        case ST_NUMBER:
                                Z_TYPE_P(ent->data) = IS_STRING;
                                Z_STRLEN_P(ent->data) = len;
                                Z_STRVAL_P(ent->data) = estrndup(s, len);
                                convert_scalar_to_number(ent->data TSRMLS_CC);
                                break;

                        case ST_BOOLEAN:
                                if (!strcmp(s, "true")) {
                                        Z_LVAL_P(ent->data) = 1;
                                } else if (!strcmp(s, "false")) {
                                        Z_LVAL_P(ent->data) = 0;
                                } else {
                                        stack->top--;
                                        zval_ptr_dtor(&ent->data);
                                        if (ent->varname)
                                                efree(ent->varname);
                                        efree(ent);
                                }
                                break;

                        case ST_DATETIME: {
                                char *tmp;

                                tmp = emalloc(len + 1);
                                memcpy(tmp, s, len);
                                tmp[len] = '\0';

                                Z_LVAL_P(ent->data) = php_parse_date(tmp, NULL);
                                /* date out of range < 1969 or > 2038 */
                                if (Z_LVAL_P(ent->data) == -1) {
                                        Z_TYPE_P(ent->data) = IS_STRING;
                                        Z_STRLEN_P(ent->data) = len;
                                        Z_STRVAL_P(ent->data) = estrndup(s, len);
                                }
                                efree(tmp);
                        }
                                break;

                        default:
                                break;
                }
        }
}
/* }}} */

/* {{{ php_wddx_deserialize_ex
 */
int php_wddx_deserialize_ex(char *value, int vallen, zval *return_value)
{
        wddx_stack stack;
        XML_Parser parser;
        st_entry *ent;
        int retval;
        
        wddx_stack_init(&stack);
        parser = XML_ParserCreate("UTF-8");

        XML_SetUserData(parser, &stack);
        XML_SetElementHandler(parser, php_wddx_push_element, php_wddx_pop_element);
        XML_SetCharacterDataHandler(parser, php_wddx_process_data);
        
        XML_Parse(parser, value, vallen, 1);
        
        XML_ParserFree(parser);

        if (stack.top == 1) {
                wddx_stack_top(&stack, (void**)&ent);
                *return_value = *(ent->data);
                zval_copy_ctor(return_value);
                retval = SUCCESS;
        } else {
                retval = FAILURE;
        }
                
        wddx_stack_destroy(&stack);

        return retval;
}
/* }}} */

/* {{{ proto string wddx_serialize_value(mixed var [, string comment])
   Creates a new packet and serializes the given value */
PHP_FUNCTION(wddx_serialize_value)
{
        zval *var;
        char *comment = NULL;
        int comment_len = 0;
        wddx_packet *packet;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|s", &var, &comment, &comment_len) == FAILURE) {
                return;
        }
        
        packet = php_wddx_constructor();

        php_wddx_packet_start(packet, comment, comment_len);
        php_wddx_serialize_var(packet, var, NULL, 0 TSRMLS_CC);
        php_wddx_packet_end(packet);
                                        
        ZVAL_STRINGL(return_value, packet->c, packet->len, 1);
        smart_str_free(packet);
        efree(packet);
}
/* }}} */

/* {{{ proto string wddx_serialize_vars(mixed var_name [, mixed ...])
   Creates a new packet and serializes given variables into a struct */
PHP_FUNCTION(wddx_serialize_vars)
{
        int num_args, i;
        wddx_packet *packet;
        zval ***args = NULL;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "+", &args, &num_args) == FAILURE) {
                return;
        }
                
        packet = php_wddx_constructor();

        php_wddx_packet_start(packet, NULL, 0);
        php_wddx_add_chunk_static(packet, WDDX_STRUCT_S);
        
        for (i=0; i<num_args; i++) {
                if (Z_TYPE_PP(args[i]) != IS_ARRAY && Z_TYPE_PP(args[i]) != IS_OBJECT) {
                        convert_to_string_ex(args[i]);
                }
                php_wddx_add_var(packet, *args[i]);
        }       
        
        php_wddx_add_chunk_static(packet, WDDX_STRUCT_E);
        php_wddx_packet_end(packet);

        efree(args);

        ZVAL_STRINGL(return_value, packet->c, packet->len, 1);
        smart_str_free(packet);
        efree(packet);
}
/* }}} */

/* {{{ php_wddx_constructor
 */
wddx_packet *php_wddx_constructor(void)
{
        smart_str *packet;

        packet = (smart_str *)emalloc(sizeof(smart_str));
        packet->c = NULL;

        return packet;
}
/* }}} */

/* {{{ php_wddx_destructor
 */
void php_wddx_destructor(wddx_packet *packet)
{
        smart_str_free(packet);
        efree(packet);
}
/* }}} */

/* {{{ proto resource wddx_packet_start([string comment])
   Starts a WDDX packet with optional comment and returns the packet id */
PHP_FUNCTION(wddx_packet_start)
{
        char *comment = NULL;
        int comment_len = 0;
        wddx_packet *packet;

        comment = NULL;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &comment, &comment_len) == FAILURE) {
                return;
        }

        packet = php_wddx_constructor();
        
        php_wddx_packet_start(packet, comment, comment_len);
        php_wddx_add_chunk_static(packet, WDDX_STRUCT_S);

        ZEND_REGISTER_RESOURCE(return_value, packet, le_wddx);
}
/* }}} */

/* {{{ proto string wddx_packet_end(resource packet_id)
   Ends specified WDDX packet and returns the string containing the packet */
PHP_FUNCTION(wddx_packet_end)
{
        zval *packet_id;
        wddx_packet *packet = NULL;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &packet_id) == FAILURE) {
                return;
        }

        ZEND_FETCH_RESOURCE(packet, wddx_packet *, &packet_id, -1, "WDDX packet ID", le_wddx);
                        
        php_wddx_add_chunk_static(packet, WDDX_STRUCT_E);       
        
        php_wddx_packet_end(packet);

        ZVAL_STRINGL(return_value, packet->c, packet->len, 1);

        zend_list_delete(Z_LVAL_P(packet_id));
}
/* }}} */

/* {{{ proto int wddx_add_vars(resource packet_id,  mixed var_names [, mixed ...])
   Serializes given variables and adds them to packet given by packet_id */
PHP_FUNCTION(wddx_add_vars)
{
        int num_args, i;
        zval ***args = NULL;
        zval *packet_id;
        wddx_packet *packet = NULL;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r+", &packet_id, &args, &num_args) == FAILURE) {
                return;
        }

        if (!ZEND_FETCH_RESOURCE_NO_RETURN(packet, wddx_packet *, &packet_id, -1, "WDDX packet ID", le_wddx)) {
                efree(args);
                RETURN_FALSE;
        }
        
        if (!packet) {
                efree(args);
                RETURN_FALSE;
        }
                
        for (i=0; i<num_args; i++) {
                if (Z_TYPE_PP(args[i]) != IS_ARRAY && Z_TYPE_PP(args[i]) != IS_OBJECT) {
                        convert_to_string_ex(args[i]);
                }
                php_wddx_add_var(packet, (*args[i]));
        }

        efree(args);
        RETURN_TRUE;
}
/* }}} */

/* {{{ proto mixed wddx_deserialize(mixed packet) 
   Deserializes given packet and returns a PHP value */
PHP_FUNCTION(wddx_deserialize)
{
        zval *packet;
        char *payload;
        int payload_len;
        php_stream *stream = NULL;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &packet) == FAILURE) {
                return;
        }

        if (Z_TYPE_P(packet) == IS_STRING) {
                payload         = Z_STRVAL_P(packet);
                payload_len = Z_STRLEN_P(packet);
        } else if (Z_TYPE_P(packet) == IS_RESOURCE) {
                php_stream_from_zval(stream, &packet);
                if (stream) {
                        payload_len = php_stream_copy_to_mem(stream, &payload, PHP_STREAM_COPY_ALL, 0);
                }
        } else {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Expecting parameter 1 to be a string or a stream");
                return;
        }

        if (payload_len == 0) {
                return;
        }

        php_wddx_deserialize_ex(payload, payload_len, return_value);
                
        if (stream) {
                pefree(payload, 0);
        }
}
/* }}} */

#endif /* HAVE_LIBEXPAT */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
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