Fix GH-17643: FPM with httpd ProxyPass encoded PATH_INFO env

Closes GH-17644

Author: bukka

NEWS

@@ -14,6 +14,10 @@ PHP                                                                        NEWS
   . Fixed bug GH-17718 (Calling static methods on an interface that has
     `__callStatic` is allowed). (timwolla)
 
+- FPM:
+  . Fixed bug GH-17643 (FPM with httpd ProxyPass encoded PATH_INFO env).
+    (Jakub Zelenka)
+
 - LDAP:
   . Fixed bug GH-17704 (ldap_search fails when $attributes contains a
     non-packed array with numerical keys). (nielsdos, 7u83)

sapi/fpm/fpm/fpm_main.c

@@ -1153,6 +1153,7 @@ static void init_request_info(void)
 							}
 
 							if (tflag) {
+								char *decoded_path_info = NULL;
 								if (orig_path_info) {
 									char old;
 
@@ -1174,7 +1175,6 @@ static void init_request_info(void)
 									 * As we can extract PATH_INFO from PATH_TRANSLATED
 									 * it is probably also in SCRIPT_NAME and need to be removed
 									 */
-									char *decoded_path_info = NULL;
 									size_t decoded_path_info_len = 0;
 									if (strchr(path_info, '%')) {
 										decoded_path_info = estrdup(path_info);
@@ -1197,11 +1197,13 @@ static void init_request_info(void)
 										env_script_name[env_script_file_info_start] = 0;
 										SG(request_info).request_uri = FCGI_PUTENV(request, "SCRIPT_NAME", env_script_name);
 									}
-									if (decoded_path_info) {
-										efree(decoded_path_info);
-									}
 								}
-								env_path_info = FCGI_PUTENV(request, "PATH_INFO", path_info);
+								if (decoded_path_info) {
+									env_path_info = FCGI_PUTENV(request, "PATH_INFO", decoded_path_info);
+									efree(decoded_path_info);
+								} else {
+									env_path_info = FCGI_PUTENV(request, "PATH_INFO", path_info);
+								}
 							}
 							if (!orig_script_filename ||
 								strcmp(orig_script_filename, pt) != 0) {

sapi/fpm/tests/fcgi-env-pif-apache-pp-sn-strip-encoded-plus.phpt

@@ -39,7 +39,7 @@ $tester
         scriptFilename: "proxy:fcgi://" . $tester->getAddr() . $sourceFilePath . '/1%20+2',
         scriptName: $scriptName . '/1 +2'
     )
-    ->expectBody([$scriptName, $scriptName . '/1 +2', $sourceFilePath, '/1%20+2', $scriptName . '/1%20+2']);
+    ->expectBody([$scriptName, $scriptName . '/1 +2', $sourceFilePath, '/1 +2', $scriptName . '/1 +2']);
 $tester->terminate();
 $tester->close();
 

sapi/fpm/tests/fcgi-env-pif-apache-pp-sn-strip-encoded.phpt

@@ -39,7 +39,7 @@ $tester
         scriptFilename: "proxy:fcgi://" . $tester->getAddr() . $sourceFilePath . '/1%202',
         scriptName: $scriptName . '/1 2'
     )
-    ->expectBody([$scriptName, $scriptName . '/1 2', $sourceFilePath, '/1%202', $scriptName . '/1%202']);
+    ->expectBody([$scriptName, $scriptName . '/1 2', $sourceFilePath, '/1 2', $scriptName . '/1 2']);
 $tester->terminate();
 $tester->close();