mirror of
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c37a1cd650
Closes GH-6110
617 lines
16 KiB
C
617 lines
16 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Rasmus Lerdorf <rasmus@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include <stdlib.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <time.h>
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#include "php.h"
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#include "ext/standard/info.h"
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#include "ext/standard/php_string.h"
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#include "ext/standard/basic_functions.h"
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#include "ext/date/php_date.h"
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#include "zend_smart_str.h"
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#if HAVE_SYSEXITS_H
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#include <sysexits.h>
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#endif
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#if HAVE_SYS_SYSEXITS_H
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#include <sys/sysexits.h>
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#endif
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#if PHP_SIGCHILD
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#include <signal.h>
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#endif
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#include "php_syslog.h"
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#include "php_mail.h"
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#include "php_ini.h"
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#include "php_string.h"
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#include "exec.h"
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#ifdef PHP_WIN32
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#include "win32/sendmail.h"
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#endif
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#define SKIP_LONG_HEADER_SEP(str, pos) \
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if (str[pos] == '\r' && str[pos + 1] == '\n' && (str[pos + 2] == ' ' || str[pos + 2] == '\t')) { \
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pos += 2; \
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while (str[pos + 1] == ' ' || str[pos + 1] == '\t') { \
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pos++; \
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} \
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continue; \
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} \
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extern zend_long php_getuid(void);
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static zend_bool php_mail_build_headers_check_field_value(zval *val)
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{
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size_t len = 0;
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zend_string *value = Z_STR_P(val);
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/* https://tools.ietf.org/html/rfc2822#section-2.2.1 */
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/* https://tools.ietf.org/html/rfc2822#section-2.2.3 */
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while (len < value->len) {
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if (*(value->val+len) == '\r') {
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if (value->len - len >= 3
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&& *(value->val+len+1) == '\n'
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&& (*(value->val+len+2) == ' ' || *(value->val+len+2) == '\t')) {
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len += 3;
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continue;
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}
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return FAILURE;
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}
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if (*(value->val+len) == '\0') {
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return FAILURE;
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}
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len++;
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}
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return SUCCESS;
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}
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static zend_bool php_mail_build_headers_check_field_name(zend_string *key)
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{
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size_t len = 0;
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/* https://tools.ietf.org/html/rfc2822#section-2.2 */
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while (len < key->len) {
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if (*(key->val+len) < 33 || *(key->val+len) > 126 || *(key->val+len) == ':') {
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return FAILURE;
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}
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len++;
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}
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return SUCCESS;
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}
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static void php_mail_build_headers_elems(smart_str *s, zend_string *key, zval *val);
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static void php_mail_build_headers_elem(smart_str *s, zend_string *key, zval *val)
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{
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switch(Z_TYPE_P(val)) {
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case IS_STRING:
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if (php_mail_build_headers_check_field_name(key) != SUCCESS) {
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zend_value_error("Header name \"%s\" contains invalid characters", ZSTR_VAL(key));
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return;
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}
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if (php_mail_build_headers_check_field_value(val) != SUCCESS) {
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zend_value_error("Header \"%s\" has invalid format, or contains invalid characters", ZSTR_VAL(key));
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return;
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}
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smart_str_append(s, key);
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smart_str_appendl(s, ": ", 2);
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smart_str_appends(s, Z_STRVAL_P(val));
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smart_str_appendl(s, "\r\n", 2);
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break;
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case IS_ARRAY:
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php_mail_build_headers_elems(s, key, val);
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break;
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default:
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zend_type_error("Header \"%s\" must be of type array|string, %s given", ZSTR_VAL(key), zend_zval_type_name(val));
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}
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}
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static void php_mail_build_headers_elems(smart_str *s, zend_string *key, zval *val)
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{
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zend_string *tmp_key;
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zval *tmp_val;
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ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(val), tmp_key, tmp_val) {
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if (tmp_key) {
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zend_type_error("Header \"%s\" must only contain numeric keys, \"%s\" found", ZSTR_VAL(key), ZSTR_VAL(tmp_key));
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break;
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}
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if (Z_TYPE_P(tmp_val) != IS_STRING) {
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zend_type_error("Header \"%s\" must only contain values of type string, %s found", ZSTR_VAL(key), zend_zval_type_name(tmp_val));
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break;
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}
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php_mail_build_headers_elem(s, key, tmp_val);
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} ZEND_HASH_FOREACH_END();
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}
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PHPAPI zend_string *php_mail_build_headers(HashTable *headers)
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{
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zend_ulong idx;
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zend_string *key;
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zval *val;
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smart_str s = {0};
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ZEND_HASH_FOREACH_KEY_VAL(headers, idx, key, val) {
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if (!key) {
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zend_type_error("Header name cannot be numeric, " ZEND_LONG_FMT " given", idx);
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break;
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}
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/* https://tools.ietf.org/html/rfc2822#section-3.6 */
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switch(ZSTR_LEN(key)) {
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case sizeof("orig-date")-1:
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if (!strncasecmp("orig-date", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("orig-date", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("from")-1:
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if (!strncasecmp("from", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("from", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("sender")-1:
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if (!strncasecmp("sender", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("sender", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("reply-to")-1:
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if (!strncasecmp("reply-to", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("reply-to", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("to")-1: /* "to", "cc" */
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if (!strncasecmp("to", ZSTR_VAL(key), ZSTR_LEN(key))) {
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zend_value_error("The additional headers cannot contain the \"To\" header");
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break;
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}
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if (!strncasecmp("cc", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("cc", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("bcc")-1:
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if (!strncasecmp("bcc", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("bcc", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("message-id")-1: /* "references" */
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if (!strncasecmp("message-id", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("message-id", s, key, val);
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} else if (!strncasecmp("references", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("references", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("in-reply-to")-1:
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if (!strncasecmp("in-reply-to", ZSTR_VAL(key), ZSTR_LEN(key))) {
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PHP_MAIL_BUILD_HEADER_CHECK("in-reply-to", s, key, val);
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} else {
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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break;
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case sizeof("subject")-1:
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if (!strncasecmp("subject", ZSTR_VAL(key), ZSTR_LEN(key))) {
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zend_value_error("The additional headers cannot contain the \"Subject\" header");
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break;
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}
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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break;
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default:
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PHP_MAIL_BUILD_HEADER_DEFAULT(s, key, val);
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}
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if (EG(exception)) {
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smart_str_free(&s);
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return NULL;
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}
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} ZEND_HASH_FOREACH_END();
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/* Remove the last \r\n */
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if (s.s) s.s->len -= 2;
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smart_str_0(&s);
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return s.s;
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}
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/* {{{ Send an email message */
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PHP_FUNCTION(mail)
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{
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char *to=NULL, *message=NULL;
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char *subject=NULL;
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zend_string *extra_cmd=NULL;
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zend_string *headers_str = NULL;
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HashTable *headers_ht = NULL;
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size_t to_len, message_len;
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size_t subject_len, i;
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char *force_extra_parameters = INI_STR("mail.force_extra_parameters");
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char *to_r, *subject_r;
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ZEND_PARSE_PARAMETERS_START(3, 5)
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Z_PARAM_PATH(to, to_len)
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Z_PARAM_PATH(subject, subject_len)
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Z_PARAM_PATH(message, message_len)
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Z_PARAM_OPTIONAL
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Z_PARAM_ARRAY_HT_OR_STR(headers_ht, headers_str)
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Z_PARAM_PATH_STR(extra_cmd)
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ZEND_PARSE_PARAMETERS_END();
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if (headers_str) {
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if (strlen(ZSTR_VAL(headers_str)) != ZSTR_LEN(headers_str)) {
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zend_argument_value_error(4, "must not contain any null bytes");
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RETURN_THROWS();
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}
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headers_str = php_trim(headers_str, NULL, 0, 2);
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} else if (headers_ht) {
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headers_str = php_mail_build_headers(headers_ht);
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if (EG(exception)) {
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RETURN_THROWS();
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}
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}
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if (to_len > 0) {
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to_r = estrndup(to, to_len);
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for (; to_len; to_len--) {
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if (!isspace((unsigned char) to_r[to_len - 1])) {
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break;
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}
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to_r[to_len - 1] = '\0';
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}
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for (i = 0; to_r[i]; i++) {
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if (iscntrl((unsigned char) to_r[i])) {
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/* According to RFC 822, section 3.1.1 long headers may be separated into
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* parts using CRLF followed at least one linear-white-space character ('\t' or ' ').
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* To prevent these separators from being replaced with a space, we use the
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* SKIP_LONG_HEADER_SEP to skip over them. */
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SKIP_LONG_HEADER_SEP(to_r, i);
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to_r[i] = ' ';
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}
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}
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} else {
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to_r = to;
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}
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if (subject_len > 0) {
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subject_r = estrndup(subject, subject_len);
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for (; subject_len; subject_len--) {
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if (!isspace((unsigned char) subject_r[subject_len - 1])) {
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break;
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}
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subject_r[subject_len - 1] = '\0';
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}
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for (i = 0; subject_r[i]; i++) {
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if (iscntrl((unsigned char) subject_r[i])) {
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SKIP_LONG_HEADER_SEP(subject_r, i);
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subject_r[i] = ' ';
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}
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}
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} else {
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subject_r = subject;
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}
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if (force_extra_parameters) {
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extra_cmd = php_escape_shell_cmd(force_extra_parameters);
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} else if (extra_cmd) {
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extra_cmd = php_escape_shell_cmd(ZSTR_VAL(extra_cmd));
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}
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if (php_mail(to_r, subject_r, message, headers_str && ZSTR_LEN(headers_str) ? ZSTR_VAL(headers_str) : NULL, extra_cmd ? ZSTR_VAL(extra_cmd) : NULL)) {
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RETVAL_TRUE;
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} else {
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RETVAL_FALSE;
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}
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if (headers_str) {
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zend_string_release_ex(headers_str, 0);
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}
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if (extra_cmd) {
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zend_string_release_ex(extra_cmd, 0);
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}
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if (to_r != to) {
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efree(to_r);
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}
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if (subject_r != subject) {
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efree(subject_r);
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}
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}
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/* }}} */
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void php_mail_log_crlf_to_spaces(char *message) {
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/* Find all instances of carriage returns or line feeds and
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* replace them with spaces. Thus, a log line is always one line
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* long
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*/
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char *p = message;
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while ((p = strpbrk(p, "\r\n"))) {
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*p = ' ';
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}
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}
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void php_mail_log_to_syslog(char *message) {
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/* Write 'message' to syslog. */
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#ifdef HAVE_SYSLOG_H
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php_syslog(LOG_NOTICE, "%s", message);
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#endif
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}
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void php_mail_log_to_file(char *filename, char *message, size_t message_size) {
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/* Write 'message' to the given file. */
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uint32_t flags = IGNORE_URL_WIN | REPORT_ERRORS | STREAM_DISABLE_OPEN_BASEDIR;
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php_stream *stream = php_stream_open_wrapper(filename, "a", flags, NULL);
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if (stream) {
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php_stream_write(stream, message, message_size);
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php_stream_close(stream);
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}
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}
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static int php_mail_detect_multiple_crlf(const char *hdr) {
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/* This function detects multiple/malformed multiple newlines. */
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if (!hdr || !strlen(hdr)) {
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return 0;
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}
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/* Should not have any newlines at the beginning. */
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/* RFC 2822 2.2. Header Fields */
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if (*hdr < 33 || *hdr > 126 || *hdr == ':') {
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return 1;
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}
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while(*hdr) {
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if (*hdr == '\r') {
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if (*(hdr+1) == '\0' || *(hdr+1) == '\r' || (*(hdr+1) == '\n' && (*(hdr+2) == '\0' || *(hdr+2) == '\n' || *(hdr+2) == '\r'))) {
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/* Malformed or multiple newlines. */
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return 1;
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} else {
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hdr += 2;
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}
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} else if (*hdr == '\n') {
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if (*(hdr+1) == '\0' || *(hdr+1) == '\r' || *(hdr+1) == '\n') {
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/* Malformed or multiple newlines. */
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return 1;
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} else {
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hdr += 2;
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}
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} else {
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hdr++;
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}
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}
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return 0;
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}
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/* {{{ php_mail */
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PHPAPI int php_mail(const char *to, const char *subject, const char *message, const char *headers, const char *extra_cmd)
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{
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#ifdef PHP_WIN32
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int tsm_err;
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char *tsm_errmsg = NULL;
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#endif
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FILE *sendmail;
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int ret;
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char *sendmail_path = INI_STR("sendmail_path");
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char *sendmail_cmd = NULL;
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char *mail_log = INI_STR("mail.log");
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const char *hdr = headers;
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char *ahdr = NULL;
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#if PHP_SIGCHILD
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void (*sig_handler)() = NULL;
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#endif
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#define MAIL_RET(val) \
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if (ahdr != NULL) { \
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efree(ahdr); \
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} \
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return val; \
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|
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if (mail_log && *mail_log) {
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char *logline;
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spprintf(&logline, 0, "mail() on [%s:%d]: To: %s -- Headers: %s -- Subject: %s", zend_get_executed_filename(), zend_get_executed_lineno(), to, hdr ? hdr : "", subject);
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|
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if (hdr) {
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php_mail_log_crlf_to_spaces(logline);
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}
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if (!strcmp(mail_log, "syslog")) {
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php_mail_log_to_syslog(logline);
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} else {
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/* Add date when logging to file */
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char *tmp;
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time_t curtime;
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zend_string *date_str;
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size_t len;
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time(&curtime);
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date_str = php_format_date("d-M-Y H:i:s e", 13, curtime, 1);
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len = spprintf(&tmp, 0, "[%s] %s%s", date_str->val, logline, PHP_EOL);
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php_mail_log_to_file(mail_log, tmp, len);
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zend_string_free(date_str);
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efree(tmp);
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}
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|
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efree(logline);
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}
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|
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if (PG(mail_x_header)) {
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const char *tmp = zend_get_executed_filename();
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zend_string *f;
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|
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f = php_basename(tmp, strlen(tmp), NULL, 0);
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|
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if (headers != NULL && *headers) {
|
|
spprintf(&ahdr, 0, "X-PHP-Originating-Script: " ZEND_LONG_FMT ":%s\r\n%s", php_getuid(), ZSTR_VAL(f), headers);
|
|
} else {
|
|
spprintf(&ahdr, 0, "X-PHP-Originating-Script: " ZEND_LONG_FMT ":%s", php_getuid(), ZSTR_VAL(f));
|
|
}
|
|
hdr = ahdr;
|
|
zend_string_release_ex(f, 0);
|
|
}
|
|
|
|
if (hdr && php_mail_detect_multiple_crlf(hdr)) {
|
|
php_error_docref(NULL, E_WARNING, "Multiple or malformed newlines found in additional_header");
|
|
MAIL_RET(0);
|
|
}
|
|
|
|
if (!sendmail_path) {
|
|
#ifdef PHP_WIN32
|
|
/* handle old style win smtp sending */
|
|
if (TSendMail(INI_STR("SMTP"), &tsm_err, &tsm_errmsg, hdr, subject, to, message, NULL, NULL, NULL) == FAILURE) {
|
|
if (tsm_errmsg) {
|
|
php_error_docref(NULL, E_WARNING, "%s", tsm_errmsg);
|
|
efree(tsm_errmsg);
|
|
} else {
|
|
php_error_docref(NULL, E_WARNING, "%s", GetSMErrorText(tsm_err));
|
|
}
|
|
MAIL_RET(0);
|
|
}
|
|
MAIL_RET(1);
|
|
#else
|
|
MAIL_RET(0);
|
|
#endif
|
|
}
|
|
if (extra_cmd != NULL) {
|
|
spprintf(&sendmail_cmd, 0, "%s %s", sendmail_path, extra_cmd);
|
|
} else {
|
|
sendmail_cmd = sendmail_path;
|
|
}
|
|
|
|
#if PHP_SIGCHILD
|
|
/* Set signal handler of SIGCHLD to default to prevent other signal handlers
|
|
* from being called and reaping the return code when our child exits.
|
|
* The original handler needs to be restored after pclose() */
|
|
sig_handler = (void *)signal(SIGCHLD, SIG_DFL);
|
|
if (sig_handler == SIG_ERR) {
|
|
sig_handler = NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifdef PHP_WIN32
|
|
sendmail = popen_ex(sendmail_cmd, "wb", NULL, NULL);
|
|
#else
|
|
/* Since popen() doesn't indicate if the internal fork() doesn't work
|
|
* (e.g. the shell can't be executed) we explicitly set it to 0 to be
|
|
* sure we don't catch any older errno value. */
|
|
errno = 0;
|
|
sendmail = popen(sendmail_cmd, "w");
|
|
#endif
|
|
if (extra_cmd != NULL) {
|
|
efree (sendmail_cmd);
|
|
}
|
|
|
|
if (sendmail) {
|
|
#ifndef PHP_WIN32
|
|
if (EACCES == errno) {
|
|
php_error_docref(NULL, E_WARNING, "Permission denied: unable to execute shell to run mail delivery binary '%s'", sendmail_path);
|
|
pclose(sendmail);
|
|
#if PHP_SIGCHILD
|
|
/* Restore handler in case of error on Windows
|
|
Not sure if this applicable on Win but just in case. */
|
|
if (sig_handler) {
|
|
signal(SIGCHLD, sig_handler);
|
|
}
|
|
#endif
|
|
MAIL_RET(0);
|
|
}
|
|
#endif
|
|
fprintf(sendmail, "To: %s\r\n", to);
|
|
fprintf(sendmail, "Subject: %s\r\n", subject);
|
|
if (hdr != NULL) {
|
|
fprintf(sendmail, "%s\r\n", hdr);
|
|
}
|
|
fprintf(sendmail, "\r\n%s\r\n", message);
|
|
ret = pclose(sendmail);
|
|
|
|
#if PHP_SIGCHILD
|
|
if (sig_handler) {
|
|
signal(SIGCHLD, sig_handler);
|
|
}
|
|
#endif
|
|
|
|
#ifdef PHP_WIN32
|
|
if (ret == -1)
|
|
#else
|
|
#if defined(EX_TEMPFAIL)
|
|
if ((ret != EX_OK)&&(ret != EX_TEMPFAIL))
|
|
#elif defined(EX_OK)
|
|
if (ret != EX_OK)
|
|
#else
|
|
if (ret != 0)
|
|
#endif
|
|
#endif
|
|
{
|
|
MAIL_RET(0);
|
|
} else {
|
|
MAIL_RET(1);
|
|
}
|
|
} else {
|
|
php_error_docref(NULL, E_WARNING, "Could not execute mail delivery program '%s'", sendmail_path);
|
|
#if PHP_SIGCHILD
|
|
if (sig_handler) {
|
|
signal(SIGCHLD, sig_handler);
|
|
}
|
|
#endif
|
|
MAIL_RET(0);
|
|
}
|
|
|
|
MAIL_RET(1); /* never reached */
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ PHP_MINFO_FUNCTION */
|
|
PHP_MINFO_FUNCTION(mail)
|
|
{
|
|
char *sendmail_path = INI_STR("sendmail_path");
|
|
|
|
#ifdef PHP_WIN32
|
|
if (!sendmail_path) {
|
|
php_info_print_table_row(2, "Internal Sendmail Support for Windows", "enabled");
|
|
} else {
|
|
php_info_print_table_row(2, "Path to sendmail", sendmail_path);
|
|
}
|
|
#else
|
|
php_info_print_table_row(2, "Path to sendmail", sendmail_path);
|
|
#endif
|
|
}
|
|
/* }}} */
|