From 1caed2fa180bb805fa376957f6871b1b81e61586 Mon Sep 17 00:00:00 2001
From: Sara Golemon <pollita@php.net>
Date: Mon, 9 Oct 2006 02:48:06 +0000
Subject: [PATCH] Add stream_resolve_include_path()

---
 NEWS                           |  1 +
 ext/standard/basic_functions.c |  7 ++++
 ext/standard/streamsfuncs.c    | 66 ++++++++++++++++++++++++++++++++++
 ext/standard/streamsfuncs.h    |  1 +
 4 files changed, 75 insertions(+)

diff --git a/NEWS b/NEWS
index 5e61ea80e8..b91ea39c32 100644
--- a/NEWS
+++ b/NEWS
@@ -55,6 +55,7 @@ PHP                                                                        NEWS
   . sys_get_temp_dir() function that returns the default directory
     for temporary files (as requested in bug #35380). (Hartmut)
   . "context" and "binary_pipes" params in "other_options" arg. (Sara)
+  . stream_resolve_include_path(). (Sara)
 
 - Fixed bug #36630 (umask not reset at the end of the request). (Ilia)
 - Fixed bug #34286 (__toString() behavior is inconsistent). (Marcus)
diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 1b0228ba3b..4b24631282 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -2443,6 +2443,12 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_stream_encoding, 0, 0, 1)
 	ZEND_ARG_INFO(0, stream)
 	ZEND_ARG_INFO(0, encoding)
 ZEND_END_ARG_INFO()
+
+static
+ZEND_BEGIN_ARG_INFO_EX(arginfo_stream_resolve_include_path, 0, 0, 1)
+	ZEND_ARG_INFO(0, filename)
+	ZEND_ARG_INFO(0, context)
+ZEND_END_ARG_INFO()
 /* }}} */
 /* {{{ string.c */
 static
@@ -3553,6 +3559,7 @@ zend_function_entry basic_functions[] = {
 #endif
 	PHP_FE(stream_copy_to_stream,											arginfo_stream_copy_to_stream)
 	PHP_FE(stream_get_contents,												arginfo_stream_get_contents)
+	PHP_FE(stream_resolve_include_path,										arginfo_stream_resolve_include_path)
 	PHP_FE(fgetcsv,															arginfo_fgetcsv)
 	PHP_FE(fputcsv,															arginfo_fputcsv)
 	PHP_FE(flock,											 				arginfo_flock)
diff --git a/ext/standard/streamsfuncs.c b/ext/standard/streamsfuncs.c
index 5d0cf54e86..f6ef5ad2f6 100644
--- a/ext/standard/streamsfuncs.c
+++ b/ext/standard/streamsfuncs.c
@@ -1579,6 +1579,72 @@ PHP_FUNCTION(stream_encoding)
 }
 /* }}} */
 
+/* {{{ proto string stream_resolve_include_path(string filename[, resource context]) U
+Determine what file will be opened by calls to fopen() with a relative path */
+PHP_FUNCTION(stream_resolve_include_path)
+{
+	zval **ppfilename, *zcontext = NULL;
+	char *filename, *ptr = PG(include_path), *end = ptr + (ptr ? strlen(ptr) : 0), buffer[MAXPATHLEN];
+	int filename_len;
+	php_stream_context *context = NULL;
+	struct stat sb;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "Z|r", &ppfilename, &zcontext) == FAILURE ||
+		php_stream_path_param_encode(ppfilename, &filename, &filename_len, REPORT_ERRORS, context = php_stream_context_from_zval(zcontext, 0)) == FAILURE) {
+		return;
+	}
+
+	while (ptr < end) {
+		char *s = strchr(ptr, DEFAULT_DIR_SEPARATOR);
+
+		if (!s) {
+			s = end;
+		}
+
+		if (s == ptr) {
+			ptr++;
+			continue;
+		}
+
+		if ((s - ptr) + 1 + filename_len >= MAXPATHLEN) {
+			/* Too long to try */
+			ptr = s + 1;
+			continue;
+		}
+
+		memcpy(buffer, ptr, s - ptr);
+		buffer[s - ptr] = '/';
+		memcpy(buffer + (s - ptr) + 1, filename, filename_len + 1);
+
+		if (php_check_open_basedir_ex(buffer, 0 TSRMLS_CC)) {
+			ptr = s + 1;
+			continue;
+		}
+
+		if (VCWD_STAT(buffer, &sb)) {
+			ptr = s + 1;
+			continue;
+		}
+
+		if (UG(unicode)) {
+			UChar *upath;
+			int upath_len;
+
+			if (SUCCESS == php_stream_path_decode(NULL, &upath, &upath_len, buffer, (s - ptr) + 1 + filename_len, REPORT_ERRORS, context)) {
+				RETURN_UNICODEL(upath, upath_len, 0);
+			} else {
+				/* Fallback */
+				RETURN_STRINGL(buffer, (s - ptr) + 1 + filename_len, 1);
+			}
+		} else {
+			RETURN_STRINGL(buffer, (s - ptr) + 1 + filename_len, 1);
+		}
+	}
+
+	RETURN_FALSE;
+}
+/* }}} */
+
 /*
  * Local variables:
  * tab-width: 4
diff --git a/ext/standard/streamsfuncs.h b/ext/standard/streamsfuncs.h
index ba9a79824f..5313e757b1 100644
--- a/ext/standard/streamsfuncs.h
+++ b/ext/standard/streamsfuncs.h
@@ -55,6 +55,7 @@ PHP_FUNCTION(stream_filter_remove);
 PHP_FUNCTION(stream_encoding);
 PHP_FUNCTION(stream_socket_enable_crypto);
 PHP_FUNCTION(stream_socket_pair);
+PHP_FUNCTION(stream_resolve_include_path);
 
 /*
  * Local variables:
-- 
2.50.1