Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Move strlen() check to php_mail_detect_multiple_crlf()
  Fixed Bug #69874 : Can't set empty additional_headers for mail()

Author: smalyshev

ext/standard/mail.c

@@ -226,7 +226,7 @@ void php_mail_log_to_file(char *filename, char *message, size_t message_size TSR
 static int php_mail_detect_multiple_crlf(char *hdr) {
 	/* This function detects multiple/malformed multiple newlines. */
 
-	if (!hdr) {
+	if (!hdr || !strlen(hdr)) {
 		return 0;
 	}
 
@@ -321,7 +321,7 @@ PHPAPI int php_mail(char *to, char *subject, char *message, char *headers, char
 
 		php_basename(tmp, strlen(tmp), NULL, 0,&f, &f_len TSRMLS_CC);
 
-		if (headers != NULL) {
+		if (headers != NULL && *headers) {
 			spprintf(&hdr, 0, "X-PHP-Originating-Script: %ld:%s\n%s", php_getuid(TSRMLS_C), f, headers);
 		} else {
 			spprintf(&hdr, 0, "X-PHP-Originating-Script: %ld:%s", php_getuid(TSRMLS_C), f);
@@ -429,7 +429,7 @@ PHPAPI int php_mail(char *to, char *subject, char *message, char *headers, char
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not execute mail delivery program '%s'", sendmail_path);
 #if PHP_SIGCHILD
 		if (sig_handler) {
-			signal(SIGCHLD, sig_handler);						
+			signal(SIGCHLD, sig_handler);
 		}
 #endif
 		MAIL_RET(0);

ext/standard/tests/mail/bug69874.phpt

@@ -0,0 +1,42 @@
+--TEST--
+Bug #69874: Null addtional_headers does not send mail
+--INI--
+sendmail_path=tee mailBasic.out >/dev/null
+mail.add_x_header = Off
+--SKIPIF--
+<?php
+if(substr(PHP_OS, 0, 3) == "WIN")
+  die("skip Won't run on Windows");
+?>
+--FILE--
+<?php
+/* Prototype  : int mail(string to, string subject, string message [, string additional_headers [, string additional_parameters]])
+ * Description: Send an email message
+ * Source code: ext/standard/mail.c
+ * Alias to functions:
+ */
+
+echo "*** Testing mail() : send email without additional headers ***\n";
+
+// Initialise all required variables
+$to = 'user@company.com';
+$subject = 'Test Subject';
+$message = 'A Message';
+
+$outFile = "mailBasic.out";
+@unlink($outFile);
+
+var_dump( mail($to, $subject, $message) );
+echo file_get_contents($outFile);
+unlink($outFile);
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing mail() : send email without additional headers ***
+bool(true)
+To: user@company.com
+Subject: Test Subject
+
+A Message
+===DONE===

ext/standard/tests/mail/bug69874_2.phpt

@@ -0,0 +1,43 @@
+--TEST--
+Bug #69874: Null addtional_headers does not send mail
+--INI--
+sendmail_path=tee mailBasic.out >/dev/null
+mail.add_x_header = On
+--SKIPIF--
+<?php
+if(substr(PHP_OS, 0, 3) == "WIN")
+  die("skip Won't run on Windows");
+?>
+--FILE--
+<?php
+/* Prototype  : int mail(string to, string subject, string message [, string additional_headers [, string additional_parameters]])
+ * Description: Send an email message
+ * Source code: ext/standard/mail.c
+ * Alias to functions:
+ */
+
+echo "*** Testing mail() : send email without additional headers ***\n";
+
+// Initialise all required variables
+$to = 'user@company.com';
+$subject = 'Test Subject';
+$message = 'A Message';
+
+$outFile = "mailBasic.out";
+@unlink($outFile);
+
+var_dump( mail($to, $subject, $message, '') );
+echo file_get_contents($outFile);
+unlink($outFile);
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing mail() : send email without additional headers ***
+bool(true)
+To: user@company.com
+Subject: Test Subject
+X-PHP-Originating-Script: %d:bug69874_2.php
+
+A Message
+===DONE===