win32: test system paths for gvfs compatibility

src/win32/findfile.c

@@ -112,13 +112,27 @@ static int win32_find_git_for_windows_architecture_root(_findfile_path *root_pat
 
 static int win32_find_git_in_path(git_str *buf, const wchar_t *gitexe, const wchar_t *subdir)
 {
-	wchar_t *env = _wgetenv(L"PATH"), lastch;
+	wchar_t *path, *env, lastch;
 	_findfile_path root;
 	size_t gitexe_len = wcslen(gitexe);
+	DWORD len;
+	bool found = false;
+
+	len = GetEnvironmentVariableW(L"PATH", NULL, 0);
 
-	if (!env)
+	if (len < 0)
 	    return -1;
 
+	path = git__malloc(len * sizeof(wchar_t));
+	GIT_ERROR_CHECK_ALLOC(path);
+
+	len = GetEnvironmentVariableW(L"PATH", path, len);
+
+	if (len < 0)
+	    return -1;
+
+	env = path;
+
 	while ((env = win32_walkpath(env, root.path, MAX_PATH-1)) && *root.path) {
 		root.len = (DWORD)wcslen(root.path);
 		lastch = root.path[root.len - 1];
@@ -148,11 +162,13 @@ static int win32_find_git_in_path(git_str *buf, const wchar_t *gitexe, const wch
 			}
 
 			win32_path_to_8(buf, root.path);
-			return 0;
+			found = true;
+			break;
 		}
 	}
 
-	return GIT_ENOTFOUND;
+	git__free(path);
+	return found ? 0 : GIT_ENOTFOUND;
 }
 
 static int win32_find_git_in_registry(
@@ -214,18 +230,18 @@ static int win32_find_existing_dirs(
 	return (git_str_oom(out) ? -1 : 0);
 }
 
-int git_win32__find_system_dirs(git_str *out, const wchar_t *subdir)
+int git_win32__find_system_dir_in_path(git_str *out, const wchar_t *subdir)
 {
-	git_str buf = GIT_STR_INIT;
-
     /* directories where git.exe & git.cmd are found */
-	if (!win32_find_git_in_path(&buf, L"git.exe", subdir) && buf.size)
-		git_str_set(out, buf.ptr, buf.size);
-	else
-		git_str_clear(out);
+    if (win32_find_git_in_path(out, L"git.exe", subdir) == 0)
+	return 0;
 
-	if (!win32_find_git_in_path(&buf, L"git.cmd", subdir) && buf.size)
-		git_str_join(out, GIT_PATH_LIST_SEPARATOR, out->ptr, buf.ptr);
+    return win32_find_git_in_path(out, L"git.cmd", subdir);
+}
+
+static int git_win32__find_system_dir_in_registry(git_str *out, const wchar_t *subdir)
+{
+    git_str buf = GIT_STR_INIT;
 
     /* directories where git is installed according to registry */
     if (!win32_find_git_in_registry(
@@ -247,6 +263,16 @@ int git_win32__find_system_dirs(git_str *out, const wchar_t *subdir)
     return (git_str_oom(out) ? -1 : 0);
 }
 
+int git_win32__find_system_dirs(git_str *out, const wchar_t *subdir)
+{
+	int error;
+
+	if ((error = git_win32__find_system_dir_in_path(out, subdir)) == 0)
+	    error = git_win32__find_system_dir_in_registry(out, subdir);
+
+	return error;
+}
+
 int git_win32__find_global_dirs(git_str *out)
 {
 	static const wchar_t *global_tmpls[4] = {

src/win32/findfile.h

@@ -10,6 +10,7 @@
 
 #include "common.h"
 
+extern int git_win32__find_system_dir_in_path(git_str* out, const wchar_t* subdir);
 extern int git_win32__find_system_dirs(git_str *out, const wchar_t *subpath);
 extern int git_win32__find_global_dirs(git_str *out);
 extern int git_win32__find_xdg_dirs(git_str *out);

tests/win32/systempath.c

+#include "clar_libgit2.h"
+#include "futils.h"
+#include "sysdir.h"
+#include "win32/findfile.h"
+
+static char *path_save;
+static git_str gfw_root = GIT_STR_INIT;
+
+void test_win32_systempath__initialize(void)
+{
+    path_save = cl_getenv("PATH");
+
+    cl_git_pass(git_str_puts(&gfw_root, clar_sandbox_path()));
+    cl_git_pass(git_str_puts(&gfw_root, "/fake_gfw_install"));
+}
+
+void test_win32_systempath__cleanup(void)
+{
+    cl_fixture_cleanup("fake_gfw_install");
+    git_str_dispose(&gfw_root);
+
+    cl_setenv("PATH", path_save);
+    git__free(path_save);
+    path_save = NULL;
+
+    git_sysdir_reset();
+}
+
+static void fix_path(git_str *s)
+{
+    char *c;
+
+    for (c = s->ptr; *c; c++) {
+	if (*c == '/')
+	    *c = '\\';
+    }
+}
+
+void test_win32_systempath__etc_gitconfig(void)
+{
+    git_str bin_path = GIT_STR_INIT, exe_path = GIT_STR_INIT,
+	    etc_path = GIT_STR_INIT, config_path = GIT_STR_INIT,
+	    path_env = GIT_STR_INIT, out = GIT_STR_INIT;
+    git_config *cfg;
+    int value;
+
+    cl_git_pass(git_str_puts(&bin_path, gfw_root.ptr));
+    cl_git_pass(git_str_puts(&bin_path, "/cmd"));
+    cl_git_pass(git_futils_mkdir_r(bin_path.ptr, 0755));
+
+    cl_git_pass(git_str_puts(&exe_path, bin_path.ptr));
+    cl_git_pass(git_str_puts(&exe_path, "/git.cmd"));
+    cl_git_mkfile(exe_path.ptr, "This is a fake executable.");
+
+    cl_git_pass(git_str_puts(&etc_path, gfw_root.ptr));
+    cl_git_pass(git_str_puts(&etc_path, "/etc"));
+    cl_git_pass(git_futils_mkdir_r(etc_path.ptr, 0755));
+
+    git_str_clear(&etc_path);
+
+    cl_git_pass(git_str_puts(&etc_path, gfw_root.ptr));
+    cl_git_pass(git_str_puts(&etc_path, "/etc"));
+    cl_git_pass(git_futils_mkdir_r(etc_path.ptr, 0755));
+
+    cl_git_pass(git_str_puts(&config_path, etc_path.ptr));
+    cl_git_pass(git_str_puts(&config_path, "/gitconfig"));
+    cl_git_mkfile(config_path.ptr, "[gfw]\n\ttest = 1337\n");
+
+    fix_path(&bin_path);
+
+    cl_git_pass(git_str_puts(&path_env, "C:\\GitTempTest\\Foo;\"c:\\program files\\doesnotexisttesttemp\";"));
+    cl_git_pass(git_str_puts(&path_env, bin_path.ptr));
+    cl_git_pass(git_str_puts(&path_env, ";C:\\fakefakedoesnotexist"));
+    cl_setenv("PATH", path_env.ptr);
+
+    cl_git_pass(git_win32__find_system_dir_in_path(&out, L"etc"));
+    cl_assert_equal_s(out.ptr, etc_path.ptr);
+
+    git_sysdir_reset();
+
+    cl_git_pass(git_config_open_default(&cfg));
+    cl_git_pass(git_config_get_int32(&value, cfg, "gfw.test"));
+    cl_assert_equal_i(1337, value);
+
+    git_str_dispose(&exe_path);
+    git_str_dispose(&etc_path);
+    git_str_dispose(&config_path);
+    git_str_dispose(&path_env);
+    git_str_dispose(&out);
+    git_config_free(cfg);
+}