summaryrefslogtreecommitdiff
path: root/ext/standard/head.c
blob: edaf7674634b11916760c825d33ee25e11233318 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2011 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: Rasmus Lerdorf <rasmus@lerdorf.on.ca>                        |
   +----------------------------------------------------------------------+
 */
/* $Id$ */

#include <stdio.h>
#include "php.h"
#include "ext/standard/php_standard.h"
#include "ext/date/php_date.h"
#include "SAPI.h"
#include "php_main.h"
#include "head.h"
#ifdef TM_IN_SYS_TIME
#include <sys/time.h>
#else
#include <time.h>
#endif

#include "php_globals.h"
#include "safe_mode.h"


/* Implementation of the language Header() function */
/* {{{ proto void header(string header [, bool replace, [int http_response_code]])
   Sends a raw HTTP header */
PHP_FUNCTION(header)
{
	zend_bool rep = 1;
	sapi_header_line ctr = {0};
	
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|bl", &ctr.line,
				&ctr.line_len, &rep, &ctr.response_code) == FAILURE)
		return;
	
	sapi_header_op(rep ? SAPI_HEADER_REPLACE:SAPI_HEADER_ADD, &ctr TSRMLS_CC);
}
/* }}} */

/* {{{ proto void header_remove([string name])
   Removes an HTTP header previously set using header() */
PHP_FUNCTION(header_remove)
{
	sapi_header_line ctr = {0};

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &ctr.line,
	                          &ctr.line_len) == FAILURE)
		return;

	sapi_header_op(ZEND_NUM_ARGS() == 0 ? SAPI_HEADER_DELETE_ALL : SAPI_HEADER_DELETE, &ctr TSRMLS_CC);
}
/* }}} */

PHPAPI int php_header(TSRMLS_D)
{
	if (sapi_send_headers(TSRMLS_C)==FAILURE || SG(request_info).headers_only) {
		return 0; /* don't allow output */
	} else {
		return 1; /* allow output */
	}
}


PHPAPI int php_setcookie(char *name, int name_len, char *value, int value_len, time_t expires, char *path, int path_len, char *domain, int domain_len, int secure, int url_encode, int httponly TSRMLS_DC)
{
	char *cookie, *encoded_value = NULL;
	int len=sizeof("Set-Cookie: ");
	char *dt;
	sapi_header_line ctr = {0};
	int result;
	
	if (name && strpbrk(name, "=,; \t\r\n\013\014") != NULL) {   /* man isspace for \013 and \014 */
		zend_error( E_WARNING, "Cookie names cannot contain any of the following '=,; \\t\\r\\n\\013\\014'" );
		return FAILURE;
	}

	if (!url_encode && value && strpbrk(value, ",; \t\r\n\013\014") != NULL) { /* man isspace for \013 and \014 */
		zend_error( E_WARNING, "Cookie values cannot contain any of the following ',; \\t\\r\\n\\013\\014'" );
		return FAILURE;
	}

	len += name_len;
	if (value && url_encode) {
		int encoded_value_len;

		encoded_value = php_url_encode(value, value_len, &encoded_value_len);
		len += encoded_value_len;
	} else if ( value ) {
		encoded_value = estrdup(value);
		len += value_len;
	}
	if (path) {
		len += path_len;
	}
	if (domain) {
		len += domain_len;
	}

	cookie = emalloc(len + 100);

	if (value && value_len == 0) {
		/* 
		 * MSIE doesn't delete a cookie when you set it to a null value
		 * so in order to force cookies to be deleted, even on MSIE, we
		 * pick an expiry date in the past
		 */
		dt = php_format_date("D, d-M-Y H:i:s T", sizeof("D, d-M-Y H:i:s T")-1, 1, 0 TSRMLS_CC);
		snprintf(cookie, len + 100, "Set-Cookie: %s=deleted; expires=%s", name, dt);
		efree(dt);
	} else {
		snprintf(cookie, len + 100, "Set-Cookie: %s=%s", name, value ? encoded_value : "");
		if (expires > 0) {
			char *p;
			strlcat(cookie, "; expires=", len + 100);
			dt = php_format_date("D, d-M-Y H:i:s T", sizeof("D, d-M-Y H:i:s T")-1, expires, 0 TSRMLS_CC);
			/* check to make sure that the year does not exceed 4 digits in length */
			p = zend_memrchr(dt, '-', strlen(dt));
			if (*(p + 5) != ' ') {
				efree(dt);
				efree(cookie);
				efree(encoded_value);
				zend_error(E_WARNING, "Expiry date cannot have a year greater then 9999");
				return FAILURE;
			}
			strlcat(cookie, dt, len + 100);
			efree(dt);
		}
	}

	if (encoded_value) {
		efree(encoded_value);
	}

	if (path && path_len > 0) {
		strlcat(cookie, "; path=", len + 100);
		strlcat(cookie, path, len + 100);
	}
	if (domain && domain_len > 0) {
		strlcat(cookie, "; domain=", len + 100);
		strlcat(cookie, domain, len + 100);
	}
	if (secure) {
		strlcat(cookie, "; secure", len + 100);
	}
	if (httponly) {
		strlcat(cookie, "; httponly", len + 100);
	}

	ctr.line = cookie;
	ctr.line_len = strlen(cookie);

	result = sapi_header_op(SAPI_HEADER_ADD, &ctr TSRMLS_CC);
	efree(cookie);
	return result;
}


/* php_set_cookie(name, value, expires, path, domain, secure) */
/* {{{ proto bool setcookie(string name [, string value [, int expires [, string path [, string domain [, bool secure[, bool httponly]]]]]])
   Send a cookie */
PHP_FUNCTION(setcookie)
{
	char *name, *value = NULL, *path = NULL, *domain = NULL;
	long expires = 0;
	zend_bool secure = 0, httponly = 0;
	int name_len, value_len = 0, path_len = 0, domain_len = 0;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|slssbb", &name,
							  &name_len, &value, &value_len, &expires, &path,
							  &path_len, &domain, &domain_len, &secure, &httponly) == FAILURE) {
		return;
	}

	if (php_setcookie(name, name_len, value, value_len, expires, path, path_len, domain, domain_len, secure, 1, httponly TSRMLS_CC) == SUCCESS) {
		RETVAL_TRUE;
	} else {
		RETVAL_FALSE;
	}
}
/* }}} */

/* {{{ proto bool setrawcookie(string name [, string value [, int expires [, string path [, string domain [, bool secure[, bool httponly]]]]]])
   Send a cookie with no url encoding of the value */
PHP_FUNCTION(setrawcookie)
{
	char *name, *value = NULL, *path = NULL, *domain = NULL;
	long expires = 0;
	zend_bool secure = 0, httponly = 0;
	int name_len, value_len = 0, path_len = 0, domain_len = 0;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|slssbb", &name,
							  &name_len, &value, &value_len, &expires, &path,
							  &path_len, &domain, &domain_len, &secure, &httponly) == FAILURE) {
		return;
	}

	if (php_setcookie(name, name_len, value, value_len, expires, path, path_len, domain, domain_len, secure, 0, httponly TSRMLS_CC) == SUCCESS) {
		RETVAL_TRUE;
	} else {
		RETVAL_FALSE;
	}
}
/* }}} */


/* {{{ proto bool headers_sent([string &$file [, int &$line]])
   Returns true if headers have already been sent, false otherwise */
PHP_FUNCTION(headers_sent)
{
	zval *arg1 = NULL, *arg2 = NULL;
	char *file="";
	int line=0;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|zz", &arg1, &arg2) == FAILURE)
		return;

	if (SG(headers_sent)) {
		line = php_get_output_start_lineno(TSRMLS_C);
		file = php_get_output_start_filename(TSRMLS_C);
	}

	switch(ZEND_NUM_ARGS()) {
	case 2:
		zval_dtor(arg2);
		ZVAL_LONG(arg2, line);
	case 1:
		zval_dtor(arg1);
		if (file) { 
			ZVAL_STRING(arg1, file, 1);
		} else {
			ZVAL_STRING(arg1, "", 1);
		}	
		break;
	}

	if (SG(headers_sent)) {
		RETURN_TRUE;
	} else {
		RETURN_FALSE;
	}
}
/* }}} */

/* {{{ php_head_apply_header_list_to_hash
   Turn an llist of sapi_header_struct headers into a numerically indexed zval hash */
static void php_head_apply_header_list_to_hash(void *data, void *arg TSRMLS_DC)
{
	sapi_header_struct *sapi_header = (sapi_header_struct *)data;

	if (arg && sapi_header) {
		add_next_index_string((zval *)arg, (char *)(sapi_header->header), 1);
	}
}

/* {{{ proto array headers_list(void)
   Return list of headers to be sent / already sent */
PHP_FUNCTION(headers_list)
{
	if (zend_parse_parameters_none() == FAILURE) {
		return;
	}

	if (!&SG(sapi_headers).headers) {
		RETURN_FALSE;
	}
	array_init(return_value);
	zend_llist_apply_with_argument(&SG(sapi_headers).headers, php_head_apply_header_list_to_hash, return_value TSRMLS_CC);
}
/* }}} */

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