/*
   +----------------------------------------------------------------------+
   | PHP version 4.0                                                      |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997, 1998, 1999 The PHP Group                         |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.0 of the PHP license,       |
   | that is bundled with this package in the file LICENSE, and is        |
   | available at through the world-wide-web at                           |
   | http://www.php.net/license/2_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          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca>                       |
   |          Zeev Suraski <zeev@zend.com>                                |
   +----------------------------------------------------------------------+
 */
/* $Id: */

#include <stdio.h>
#include "php.h"
#include "php_standard.h"
#include "php_globals.h"
#include "SAPI.h"

#include "zend_globals.h"


/*
 * parse Get/Post/Cookie string and create appropriate variable
 *
 * This is a tad ugly because it was yanked out of the middle of
 * the old TreatData function.  This is a temporary measure filling 
 * the gap until a more flexible parser can be built to do this.
 */
void php_parse_gpc_data(char *val, char *var, pval *track_vars_array ELS_DC PLS_DC)
{
	int var_type;
	char *ind, *tmp = NULL, *array_index = NULL;
	int var_len, val_len;
	pval *gpc_element;
	zend_bool do_insert;
	
	if (!PG(gpc_globals) && !track_vars_array) {
		/* we don't need track_vars, and we're not setting GPC globals either. */
		return;
	}

	var_type = php3_check_ident_type(var);
	if (var_type == GPC_INDEXED_ARRAY) {
		ind = php3_get_ident_index(var);
		if (PG(magic_quotes_gpc)) {
			array_index = php_addslashes(ind, 0, NULL, 1);
		} else {
			array_index = ind;
		}
	}
	if (var_type & GPC_ARRAY) {		/* array (indexed or not) */
		tmp = strchr(var, '[');
		if (tmp) {
			*tmp = '\0';
		}
	}
	/* ignore leading spaces in the variable name */
	while (*var && *var==' ') {
		var++;
	}
	var_len = strlen(var);
	if (var_len==0) { /* empty variable name, or variable name with a space in it */
		return;
	}

	/* ensure that we don't have spaces or dots in the variable name (not binary safe) */
	for (tmp=var; *tmp; tmp++) {
		switch(*tmp) {
			case ' ':
			case '.':
				*tmp='_';
				break;
		}
	}

	val_len = strlen(val);
	if (PG(magic_quotes_gpc)) {
		val = php_addslashes(val, val_len, &val_len, 0);
	} else {
		val = estrndup(val, val_len);
	}

	if (var_type & GPC_ARRAY) {
		pval *gpc_element;
		pval **arr_ptr_ptr;
		pval *array_element;

		if (zend_hash_find(EG(active_symbol_table), var, var_len+1, (void **) &arr_ptr_ptr) == FAILURE) {
			/* If the array doesn't exist, create it */
			MAKE_STD_ZVAL(gpc_element);
			array_init(gpc_element);
			do_insert=1;
		} else {
			if ((*arr_ptr_ptr)->type!=IS_ARRAY) {
				if (--(*arr_ptr_ptr)->refcount > 0) {
					MAKE_STD_ZVAL(*arr_ptr_ptr);
				} else {
					zval_dtor(*arr_ptr_ptr);
				}
				array_init(*arr_ptr_ptr);
			}
			gpc_element = *arr_ptr_ptr;
			do_insert=0;
		}

		/* Create the element */
		array_element = (pval *) emalloc(sizeof(pval));
		INIT_PZVAL(array_element);
		array_element->value.str.val = val;
		array_element->value.str.len = val_len;
		array_element->type = IS_STRING;

		/* Insert it */
		if (array_index) {	
			/* indexed array */
			if (php3_check_type(array_index) == IS_LONG) {
				/* numeric index */
				zend_hash_index_update(gpc_element->value.ht, atol(array_index), &array_element, sizeof(pval *), NULL);	/* s[array_index]=tmp */
			} else {
				/* associative index */
				zend_hash_update(gpc_element->value.ht, array_index, strlen(array_index)+1, &array_element, sizeof(pval *), NULL);	/* s["ret"]=tmp */
			}
			efree(array_index);
		} else {
			/* non-indexed array */
			zend_hash_next_index_insert(gpc_element->value.ht, &array_element, sizeof(pval *), NULL);
		}
	} else {			/* we have a normal variable */
		MAKE_STD_ZVAL(gpc_element);
		gpc_element->type = IS_STRING;
		gpc_element->refcount = 0;
		gpc_element->value.str.val = val;
		gpc_element->value.str.len = val_len;
		do_insert=1;
	}

	if (do_insert) {
		gpc_element->refcount = 0;
		if (PG(gpc_globals)) {
			zend_hash_update(EG(active_symbol_table), var, var_len+1, &gpc_element, sizeof(pval *), NULL);
			gpc_element->refcount++;
		}
		if (track_vars_array) {
			zend_hash_update(track_vars_array->value.ht, var, var_len+1, &gpc_element, sizeof(pval *), NULL);
			gpc_element->refcount++;
		}
	}
}


void php_parse_gpc_data2(char *val, char *var, pval *track_vars_array ELS_DC PLS_DC)
{
	char *p = NULL;
	char *ip;		/* index pointer */
	char *index;
	int var_len, val_len, index_len;
	zval *gpc_element, **gpc_element_p, **top_gpc_p=NULL;
	zend_bool is_array;
	zend_bool free_index;
	HashTable *symtable1=NULL;
	HashTable *symtable2=NULL;
	
	if (PG(gpc_globals)) {
		symtable1 = EG(active_symbol_table);
	}
	if (track_vars_array) {
		if (symtable1) {
			symtable2 = track_vars_array->value.ht;
		} else {
			symtable1 = track_vars_array->value.ht;
		}
	}
	if (!symtable1) {
		/* we don't need track_vars, and we're not setting GPC globals either. */
		return;
	}

	/*
	 * Prepare variable name
	 */
	ip = strchr(var, '[');
	if (ip) {
		is_array = 1;
		*ip = 0;
	} else {
		is_array = 0;
	}
	/* ignore leading spaces in the variable name */
	while (*var && *var==' ') {
		var++;
	}
	var_len = strlen(var);
	if (var_len==0) { /* empty variable name, or variable name with a space in it */
		return;
	}
	/* ensure that we don't have spaces or dots in the variable name (not binary safe) */
	for (p=var; *p; p++) {
		switch(*p) {
			case ' ':
			case '.':
				*p='_';
				break;
		}
	}

	/* Prepare value */
	val_len = strlen(val);
	if (PG(magic_quotes_gpc)) {
		val = php_addslashes(val, val_len, &val_len, 0);
	} else {
		val = estrndup(val, val_len);
	}

	index = var;
	index_len = var_len;
	free_index = 0;

	while (1) {
		if (is_array) {
			char *escaped_index;

			if (!index) {
				MAKE_STD_ZVAL(gpc_element);
				array_init(gpc_element);
				zend_hash_next_index_insert(symtable1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
			} else {
				if (PG(magic_quotes_gpc) && (index!=var)) {
					/* no need to addslashes() the index if it's the main variable name */
					escaped_index = php_addslashes(index, index_len, &index_len, 0);
				} else {
					escaped_index = index;
				}
				if (zend_hash_find(symtable1, escaped_index, index_len+1, (void **) &gpc_element_p)==FAILURE
					|| (*gpc_element_p)->type != IS_ARRAY) {
					MAKE_STD_ZVAL(gpc_element);
					array_init(gpc_element);
					zend_hash_update(symtable1, escaped_index, index_len+1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
				}
				if (index!=escaped_index) {
					efree(escaped_index);
				}
			}
			if (!top_gpc_p) {
				top_gpc_p = gpc_element_p;
			}
			symtable1 = (*gpc_element_p)->value.ht;
			/* ip pointed to the '[' character, now obtain the key */
			index = ++ip;
			index_len = 0;
			if (*ip=='\n' || *ip=='\r' || *ip=='\t' || *ip==' ') {
				ip++;
			}
			if (*ip==']') {
				index = NULL;
			} else {
				ip = strchr(ip, ']');
				if (!ip) {
					php_error(E_WARNING, "Missing ] in %s variable", var);
					return;
				}
				*ip = 0;
				index_len = strlen(index);
			}
			ip++;
			if (*ip=='[') {
				is_array = 1;
				*ip = 0;
			} else {
				is_array = 0;
			}
		} else {
			MAKE_STD_ZVAL(gpc_element);
			gpc_element->value.str.val = val;
			gpc_element->value.str.len = val_len;
			gpc_element->type = IS_STRING;
			if (!index) {
				zend_hash_next_index_insert(symtable1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
			} else {
				zend_hash_update(symtable1, index, index_len+1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
			}
			if (!top_gpc_p) {
				top_gpc_p = gpc_element_p;
			}
			break;
		}
	}

	if (top_gpc_p) {
		(*top_gpc_p)->is_ref = 1;
		if (symtable2) {
			zend_hash_update(symtable2, var, var_len+1, top_gpc_p, sizeof(zval *), NULL);
			(*top_gpc_p)->refcount++;
		}	
	}
}


void php_treat_data(int arg, char *str ELS_DC PLS_DC SLS_DC)
{
	char *res = NULL, *var, *val;
	pval *array_ptr;
	int free_buffer=0;
	char *strtok_buf = NULL;
	
	switch (arg) {
		case PARSE_POST:
		case PARSE_GET:
		case PARSE_COOKIE:
			if (PG(track_vars)) {
				array_ptr = (pval *) emalloc(sizeof(pval));
				array_init(array_ptr);
				INIT_PZVAL(array_ptr);
				switch (arg) {
					case PARSE_POST:
						zend_hash_add(&EG(symbol_table), "HTTP_POST_VARS", sizeof("HTTP_POST_VARS"), &array_ptr, sizeof(pval *),NULL);
						break;
					case PARSE_GET:
						zend_hash_add(&EG(symbol_table), "HTTP_GET_VARS", sizeof("HTTP_GET_VARS"), &array_ptr, sizeof(pval *),NULL);
						break;
					case PARSE_COOKIE:
						zend_hash_add(&EG(symbol_table), "HTTP_COOKIE_VARS", sizeof("HTTP_COOKIE_VARS"), &array_ptr, sizeof(pval *),NULL);
						break;
				}
			} else {
				array_ptr=NULL;
			}
			break;
		default:
			array_ptr=NULL;
			break;
	}

	if (arg == PARSE_POST) {			/* POST data */
		res = SG(request_info).post_data;
		free_buffer = 0;
	} else if (arg == PARSE_GET) {		/* GET data */
		var = SG(request_info).query_string;
		if (var && *var) {
			res = (char *) estrdup(var);
			free_buffer = 1;
		} else {
			free_buffer = 0;
		}
	} else if (arg == PARSE_COOKIE) {		/* Cookie data */
		var = SG(request_info).cookie_data;
		if (var && *var) {
			res = (char *) estrdup(var);
			free_buffer = 1;
		} else {
			free_buffer = 0;
		}
	} else if (arg == PARSE_STRING) {		/* String data */
		res = str;
		free_buffer = 1;
	}
	if (!res) {
		return;
	}

#if HAVE_FDFLIB
	if((NULL != SG(request_info).content_type) && (0 == strcmp(SG(request_info).content_type, "application/vnd.fdf"))) {
		pval *tmp;

		tmp = (pval *) emalloc(sizeof(pval));
		tmp->value.str.len = SG(request_info).post_data_length;
		tmp->value.str.val = estrndup(SG(request_info).post_data, SG(request_info).post_data_length);
		tmp->type = IS_STRING;
		INIT_PZVAL(tmp);
		zend_hash_add(&EG(symbol_table), "HTTP_FDF_DATA", sizeof("HTTP_FDF_DATA"), &tmp, sizeof(pval *),NULL);

	} else {
#endif
		if (arg == PARSE_COOKIE) {
			var = strtok_r(res, ";", &strtok_buf);
		} else if (arg == PARSE_POST) {
			var = strtok_r(res, "&", &strtok_buf);
		} else {
			var = strtok_r(res, PG(arg_separator), &strtok_buf);
		}

		while (var) {
			val = strchr(var, '=');
			if (val) { /* have a value */
				*val++ = '\0';
				/* FIXME: XXX: not binary safe, discards returned length */
				_php3_urldecode(var, strlen(var));
				_php3_urldecode(val, strlen(val));
				php_parse_gpc_data2(val,var,array_ptr ELS_CC PLS_CC);
			}
			if (arg == PARSE_COOKIE) {
				var = strtok_r(NULL, ";", &strtok_buf);
			} else if (arg == PARSE_POST) {
				var = strtok_r(NULL, "&", &strtok_buf);
			} else {
				var = strtok_r(NULL, PG(arg_separator), &strtok_buf);
			}
		}
#if HAVE_FDFLIB
	}
#endif
	if (free_buffer) {
		efree(res);
	}
}


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