Win32: Enable WinHTTP for MinGW

.travis.yml

@@ -27,7 +27,7 @@ matrix:
      compiler: gcc
  include:
    - compiler: i586-mingw32msvc-gcc
-     env: OPTIONS="-DBUILD_CLAR=OFF -DWIN32=ON -DMINGW=ON -DUSE_SSH=OFF"
+     env: OPTIONS="-DCMAKE_TOOLCHAIN_FILE=../script/toolchain-mingw32.cmake" SKIP_TESTS=1
      os: linux
    - compiler: gcc
      env: COVERITY=1

CMakeLists.txt

@@ -13,6 +13,7 @@
 
 PROJECT(libgit2 C)
 CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+CMAKE_POLICY(SET CMP0015 NEW)
 
 # Add find modules to the path
 SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
@@ -58,10 +59,6 @@ IF(MSVC)
 	# are linking statically
 	OPTION( STATIC_CRT		"Link the static CRT libraries"	ON  )
 
-	# By default, libgit2 is built with WinHTTP.  To use the built-in
-	# HTTP transport, invoke CMake with the "-DWINHTTP=OFF" argument.
-	OPTION( WINHTTP			"Use Win32 WinHTTP routines"	ON  )
-
 	# If you want to embed a copy of libssh2 into libgit2, pass a
 	# path to libssh2
 	OPTION( EMBED_SSH_PATH		"Path to libssh2 to embed (Windows)" OFF )
@@ -71,6 +68,12 @@ IF(MSVC)
 	ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_DEPRECATE)
 ENDIF()
 
+IF(WIN32)
+	# By default, libgit2 is built with WinHTTP.  To use the built-in
+	# HTTP transport, invoke CMake with the "-DWINHTTP=OFF" argument.
+	OPTION(	WINHTTP			"Use Win32 WinHTTP routines"	ON	)
+ENDIF()
+
 # This variable will contain the libraries we need to put into
 # libgit2.pc's Requires.private. That is, what we're linking to or
 # what someone who's statically linking us needs to link to.
@@ -147,10 +150,38 @@ IF (WIN32 AND EMBED_SSH_PATH)
 	ADD_DEFINITIONS(-DGIT_SSH)
 ENDIF()
 
-IF (WIN32 AND WINHTTP AND NOT MINGW)
+IF (WIN32 AND WINHTTP)
 	ADD_DEFINITIONS(-DGIT_WINHTTP)
 	INCLUDE_DIRECTORIES(deps/http-parser)
 	FILE(GLOB SRC_HTTP deps/http-parser/*.c deps/http-parser/*.h)
+
+	# Since MinGW does not come with headers or an import library for winhttp,
+	# we have to include a private header and generate our own import library
+	IF (MINGW)
+		FIND_PROGRAM(DLLTOOL dlltool CMAKE_FIND_ROOT_PATH_BOTH)
+		IF (NOT DLLTOOL)
+			MESSAGE(FATAL_ERROR "Could not find dlltool command")
+		ENDIF ()
+
+		SET(LIBWINHTTP_PATH "${CMAKE_CURRENT_SOURCE_DIR}/deps/winhttp")
+
+		ADD_CUSTOM_COMMAND(
+			OUTPUT ${LIBWINHTTP_PATH}/libwinhttp.a
+			COMMAND ${DLLTOOL} -d winhttp.def -k -D winhttp.dll -l libwinhttp.a
+			DEPENDS ${LIBWINHTTP_PATH}/winhttp.def
+			WORKING_DIRECTORY ${LIBWINHTTP_PATH}
+		)
+
+		SET_SOURCE_FILES_PROPERTIES(
+			${CMAKE_CURRENT_SOURCE_DIR}/src/transports/winhttp.c
+			PROPERTIES OBJECT_DEPENDS ${LIBWINHTTP_PATH}/libwinhttp.a
+		)
+
+		INCLUDE_DIRECTORIES(deps/winhttp)
+		LINK_DIRECTORIES(deps/winhttp)
+	ENDIF ()
+
+	LINK_LIBRARIES(winhttp rpcrt4)
 ELSE ()
 	IF (NOT AMIGA AND USE_OPENSSL)
 		FIND_PACKAGE(OpenSSL)

deps/winhttp/urlmon.h

+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#ifndef __CUSTOM_URLMON_H
+#define __CUSTOM_URLMON_H
+
+typedef struct IInternetSecurityManager IInternetSecurityManager;
+
+typedef struct IInternetSecurityManagerVtbl
+{
+	HRESULT(STDMETHODCALLTYPE *QueryInterface)(IInternetSecurityManager *, REFIID, void **);
+	ULONG(STDMETHODCALLTYPE *AddRef)(IInternetSecurityManager *);
+	ULONG(STDMETHODCALLTYPE *Release)(IInternetSecurityManager *);
+	LPVOID SetSecuritySite;
+	LPVOID GetSecuritySite;
+	HRESULT(STDMETHODCALLTYPE *MapUrlToZone)(IInternetSecurityManager *, LPCWSTR, DWORD *, DWORD);
+	LPVOID GetSecurityId;
+	LPVOID ProcessUrlAction;
+	LPVOID QueryCustomPolicy;
+	LPVOID SetZoneMapping;
+	LPVOID GetZoneMappings;
+} IInternetSecurityManagerVtbl;
+
+struct IInternetSecurityManager
+{
+	CONST_VTBL struct IInternetSecurityManagerVtbl *lpVtbl;
+};
+
+#define URLZONE_LOCAL_MACHINE 0
+#define URLZONE_INTRANET      1
+#define URLZONE_TRUSTED       2
+
+#endif /* __CUSTOM_URLMON_H */

deps/winhttp/winhttp.def

+LIBRARY		WINHTTP
+EXPORTS
+WinHttpAddRequestHeaders@16
+WinHttpCheckPlatform@0
+WinHttpCloseHandle@4
+WinHttpConnect@16
+WinHttpCrackUrl@16
+WinHttpCreateUrl@16
+WinHttpDetectAutoProxyConfigUrl@8
+WinHttpGetDefaultProxyConfiguration@4
+WinHttpGetIEProxyConfigForCurrentUser@4
+WinHttpGetProxyForUrl@16
+WinHttpOpen@20
+WinHttpOpenRequest@28
+WinHttpQueryAuthSchemes@16
+WinHttpQueryDataAvailable@8
+WinHttpQueryHeaders@24
+WinHttpQueryOption@16
+WinHttpReadData@16
+WinHttpReceiveResponse@8
+WinHttpSendRequest@28
+WinHttpSetCredentials@24
+WinHttpSetDefaultProxyConfiguration@4
+WinHttpSetOption@16
+WinHttpSetStatusCallback@16
+WinHttpSetTimeouts@20
+WinHttpTimeFromSystemTime@8
+WinHttpTimeToSystemTime@8
+WinHttpWriteData@16

script/cibuild.sh

@@ -6,17 +6,25 @@ then
 	exit $?;
 fi
 
+mkdir _build
+cd _build
+# shellcheck disable=SC2086
+cmake .. -DCMAKE_INSTALL_PREFIX=../_install $OPTIONS || exit $?
+make -j2 install || exit $?
+
+# If this platform doesn't support test execution, bail out now
+if [ -n "$SKIP_TESTS" ];
+then
+	exit $?;
+fi
+
 # Create a test repo which we can use for the online::push tests
 mkdir "$HOME"/_temp
 git init --bare "$HOME"/_temp/test.git
 git daemon --listen=localhost --export-all --enable=receive-pack --base-path="$HOME"/_temp "$HOME"/_temp 2>/dev/null &
 export GITTEST_REMOTE_URL="git://localhost/test.git"
 
-mkdir _build
-cd _build
-# shellcheck disable=SC2086
-cmake .. -DCMAKE_INSTALL_PREFIX=../_install $OPTIONS || exit $?
-make -j2 install || exit $?
+# Run the test suite
 ctest -V . || exit $?
 
 # Now that we've tested the raw git protocol, let's set up ssh to we

script/toolchain-mingw32.cmake

+# CMake toolchain file for Win32 cross-compile
+SET(CMAKE_SYSTEM_NAME Windows)
+
+SET(CMAKE_C_COMPILER i586-mingw32msvc-gcc)
+SET(CMAKE_RC_COMPILER i586-mingw32msvc-windres)
+
+SET(CMAKE_FIND_ROOT_PATH /usr/i586-mingw32msvc)
+
+SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

src/transports/winhttp.c

@@ -19,17 +19,9 @@
 #include <wincrypt.h>
 #pragma comment(lib, "crypt32")
 #include <winhttp.h>
-#pragma comment(lib, "winhttp")
-
-#include <strsafe.h>
-
-/* For IInternetSecurityManager zone check */
 #include <objbase.h>
 #include <urlmon.h>
 
-/* For UuidCreate */
-#pragma comment(lib, "rpcrt4")
-
 #define WIDEN2(s) L ## s
 #define WIDEN(s) WIDEN2(s)
 
@@ -43,7 +35,6 @@
 #define WINHTTP_IGNORE_REQUEST_TOTAL_LENGTH 0
 #endif
 
-static const char *prefix_http = "http://";
 static const char *prefix_https = "https://";
 static const char *upload_pack_service = "upload-pack";
 static const char *upload_pack_ls_service_url = "/info/refs?service=git-upload-pack";
@@ -59,6 +50,13 @@ static const int no_check_cert_flags = SECURITY_FLAG_IGNORE_CERT_CN_INVALID |
 	SECURITY_FLAG_IGNORE_CERT_DATE_INVALID |
 	SECURITY_FLAG_IGNORE_UNKNOWN_CA;
 
+#if defined(__MINGW32__)
+static const CLSID CLSID_InternetSecurityManager = { 0x7B8A2D94, 0x0AC9, 0x11D1,
+	{ 0x89, 0x6C, 0x00, 0xC0, 0x4F, 0xB6, 0xBF, 0xC4 } };
+static const IID IID_IInternetSecurityManager = { 0x79EAC9EE, 0xBAF9, 0x11CE,
+	{ 0x8C, 0x82, 0x00, 0xAA, 0x00, 0x4B, 0xA9, 0x0B } };
+#endif
+
 #define OWNING_SUBTRANSPORT(s) ((winhttp_subtransport *)(s)->parent.subtransport)
 
 typedef enum {
@@ -272,7 +270,7 @@ static int winhttp_stream_connect(winhttp_stream *s)
 	git_buf buf = GIT_BUF_INIT;
 	char *proxy_url = NULL;
 	wchar_t ct[MAX_CONTENT_TYPE_LEN];
-	wchar_t *types[] = { L"*/*", NULL };
+	LPCWSTR types[] = { L"*/*", NULL };
 	BOOL peerdist = FALSE;
 	int error = -1;
 	unsigned long disable_redirects = WINHTTP_DISABLE_REDIRECTS;
@@ -551,8 +549,7 @@ static int winhttp_close_connection(winhttp_subtransport *t)
 }
 
 static int winhttp_connect(
-	winhttp_subtransport *t,
-	const char *url)
+	winhttp_subtransport *t)
 {
 	wchar_t *ua = L"git/1.0 (libgit2 " WIDEN(LIBGIT2_VERSION) L")";
 	wchar_t *wide_host;
@@ -561,8 +558,6 @@ static int winhttp_connect(
 	int default_timeout = TIMEOUT_INFINITE;
 	int default_connect_timeout = DEFAULT_CONNECT_TIMEOUT;
 
-	GIT_UNUSED(url);
-
 	t->session = NULL;
 	t->connection = NULL;
 
@@ -860,7 +855,7 @@ replay:
 
 				winhttp_close_connection(t);
 
-				if (winhttp_connect(t, location8) < 0)
+				if (winhttp_connect(t) < 0)
 					return -1;
 			}
 
@@ -963,7 +958,6 @@ static int winhttp_stream_write_single(
 	size_t len)
 {
 	winhttp_stream *s = (winhttp_stream *)stream;
-	winhttp_subtransport *t = OWNING_SUBTRANSPORT(s);
 	DWORD bytes_written;
 	int error;
 
@@ -998,7 +992,7 @@ static int put_uuid_string(LPWSTR buffer, size_t buffer_len_cch)
 {
 	UUID uuid;
 	RPC_STATUS status = UuidCreate(&uuid);
-	HRESULT result;
+	int result;
 
 	if (RPC_S_OK != status &&
 		RPC_S_UUID_LOCAL_ONLY != status &&
@@ -1012,14 +1006,14 @@ static int put_uuid_string(LPWSTR buffer, size_t buffer_len_cch)
 		return -1;
 	}
 
-	result = StringCbPrintfW(
-		buffer, buffer_len_cch,
+	result = wsprintfW(
+		buffer,
 		L"%08x%04x%04x%02x%02x%02x%02x%02x%02x%02x%02x",
 		uuid.Data1, uuid.Data2, uuid.Data3,
 		uuid.Data4[0], uuid.Data4[1], uuid.Data4[2], uuid.Data4[3],
 		uuid.Data4[4], uuid.Data4[5], uuid.Data4[6], uuid.Data4[7]);
 
-	if (FAILED(result)) {
+	if (result < UUID_LENGTH_CCH) {
 		giterr_set(GITERR_OS, "Unable to generate name for temp file");
 		return -1;
 	}
@@ -1053,7 +1047,6 @@ static int winhttp_stream_write_buffered(
 	size_t len)
 {
 	winhttp_stream *s = (winhttp_stream *)stream;
-	winhttp_subtransport *t = OWNING_SUBTRANSPORT(s);
 	DWORD bytes_written;
 
 	if (!s->request && winhttp_stream_connect(s) < 0)
@@ -1135,7 +1128,7 @@ static int winhttp_stream_write_chunked(
 	}
 	else {
 		/* Append as much to the buffer as we can */
-		int count = min(CACHED_POST_BODY_BUF_SIZE - s->chunk_buffer_len, (int)len);
+		int count = (int)min(CACHED_POST_BODY_BUF_SIZE - s->chunk_buffer_len, len);
 
 		if (!s->chunk_buffer)
 			s->chunk_buffer = git__malloc(CACHED_POST_BODY_BUF_SIZE);
@@ -1195,6 +1188,8 @@ static int winhttp_uploadpack_ls(
 	winhttp_subtransport *t,
 	winhttp_stream *s)
 {
+	GIT_UNUSED(t);
+
 	s->service = upload_pack_service;
 	s->service_url = upload_pack_ls_service_url;
 	s->verb = get_verb;
@@ -1206,6 +1201,8 @@ static int winhttp_uploadpack(
 	winhttp_subtransport *t,
 	winhttp_stream *s)
 {
+	GIT_UNUSED(t);
+
 	s->service = upload_pack_service;
 	s->service_url = upload_pack_service_url;
 	s->verb = post_verb;
@@ -1217,6 +1214,8 @@ static int winhttp_receivepack_ls(
 	winhttp_subtransport *t,
 	winhttp_stream *s)
 {
+	GIT_UNUSED(t);
+
 	s->service = receive_pack_service;
 	s->service_url = receive_pack_ls_service_url;
 	s->verb = get_verb;
@@ -1228,6 +1227,8 @@ static int winhttp_receivepack(
 	winhttp_subtransport *t,
 	winhttp_stream *s)
 {
+	GIT_UNUSED(t);
+
 	/* WinHTTP only supports Transfer-Encoding: chunked
 	 * on Windows Vista (NT 6.0) and higher. */
 	s->chunked = git_has_win32_version(6, 0, 0);
@@ -1256,7 +1257,7 @@ static int winhttp_action(
 
 	if (!t->connection)
 		if ((ret = gitno_connection_data_from_url(&t->connection_data, url, NULL)) < 0 ||
-			 (ret = winhttp_connect(t, url)) < 0)
+			 (ret = winhttp_connect(t)) < 0)
 			return ret;
 
 	if (winhttp_stream_alloc(t, &s) < 0)