From 7906d1f7c8ba7545b7b4bdec7481d682f79eedf4 Mon Sep 17 00:00:00 2001
From: "Charles R. Portwood II" <charlesportwoodii@erianna.com>
Date: Sat, 17 Jun 2017 16:45:14 -0500
Subject: [PATCH] Compatibility with libargon2 versions 20161029 and 20160821

libargon2 20161029 introduces the `type` parameter to the argon2_encodedlen
function that is not present in 20160821. This change ensures the Argon2
functionality introduced in RFC `argon2_password_hash` is compatible with
both versions, as the library version that package maintainers package may
differ.
---
 ext/standard/config.m4  | 9 +++++++++
 ext/standard/config.w32 | 3 +++
 ext/standard/password.c | 3 +++
 3 files changed, 15 insertions(+)

diff --git a/ext/standard/config.m4 b/ext/standard/config.m4
index 284e74e967ea7..80c3db631f883 100644
--- a/ext/standard/config.m4
+++ b/ext/standard/config.m4
@@ -433,12 +433,21 @@ if test "$PHP_PASSWORD_ARGON2" != "no"; then
   PHP_ADD_LIBRARY_WITH_PATH(argon2, $ARGON2_DIR/$PHP_LIBDIR)
   PHP_ADD_INCLUDE($ARGON2_DIR/include)
 
+  AC_MSG_CHECKING([for argon2_hash function])
   AC_CHECK_LIB(argon2, argon2_hash, [
     LIBS="$LIBS -largon2"
     AC_DEFINE(HAVE_ARGON2LIB, 1, [ Define to 1 if you have the <argon2.h> header file ])
   ], [
     AC_MSG_ERROR([Problem with libargon2.(a|so). Please verify that Argon2 header and libaries are installed])
   ])
+
+  AC_MSG_CHECKING([for argon2id_hash_raw function])
+  AC_CHECK_LIB(argon2, argon2id_hash_raw, [
+    LIBS="$LIBS -largon2"
+    AC_DEFINE(HAVE_ARGON2ID, 1, [ Define to 1 if Argon2 library has support for Argon2ID])
+  ], [
+    AC_MSG_RESULT([not found])
+  ])
 fi
 
 dnl
diff --git a/ext/standard/config.w32 b/ext/standard/config.w32
index 00b2166abe876..ee1935fe87257 100644
--- a/ext/standard/config.w32
+++ b/ext/standard/config.w32
@@ -7,6 +7,9 @@ if (PHP_PASSWORD_ARGON2 != "no") {
 	if (CHECK_LIB("argon2_a.lib;argon2.lib", null, PHP_PASSWORD_ARGON2)
 	&& CHECK_HEADER_ADD_INCLUDE("argon2.h", "CFLAGS")) {
 		AC_DEFINE('HAVE_ARGON2LIB', 1);
+		if (CHECK_FUNC_IN_HEADER("argon2.h", "argon2id_hash_raw", PHP_PHP_BUILD + "\\include", "CFLAGS")) {
+			AC_DEFINE('HAVE_ARGON2ID', 1);
+		}
 	} else {
 		WARNING("Argon2 not enabled; libaries and headers not found");
 	}
diff --git a/ext/standard/password.c b/ext/standard/password.c
index 2d04badd1b087..5e1704fe6952f 100644
--- a/ext/standard/password.c
+++ b/ext/standard/password.c
@@ -545,6 +545,9 @@ PHP_FUNCTION(password_hash)
 					threads,
 					(uint32_t)salt_len,
 					out_len
+#if HAVE_ARGON2ID
+					, type
+#endif
 				);
 
 				out = emalloc(out_len + 1);