workspace share security (#192)

- Improvement: Reworked workspace shares to be more secure. Workspaces and workspace shares can only be created using the `zen workspace` command, the http endpoint is disabled unless zenserver is started with the `--workspaces-allow-changes` option enabled.
  - Each workspace are now configured via a `zenworkspaceconfig.json` file in the root of each workspace
  - A workspace can allow shares to be created via the http interface if the workspace is created with the `--allow-share-create-from-http` option enabled
  - A new http endpoint at `/ws` - issuing a `Get` operation will get you a list of workspaces
  - A new http endpoint at `/ws/refresh` - issuing a `Get` will make zenserver scan for edits in workspaces and workspace shares

1 files changed, 30 insertions, 0 deletions

diff --git a/src/zencore/filesystem.cpp b/src/zencore/filesystem.cpp
index ac2aabbf0..93383a656 100644
--- a/src/zencore/filesystem.cpp
+++ b/src/zencore/filesystem.cpp
@@ -14,6 +14,9 @@
 
 #if ZEN_PLATFORM_WINDOWS
 #	include <zencore/windows.h>
+#	include <ShlObj.h>
+#	pragma comment(lib, "shell32.lib")
+#	pragma comment(lib, "ole32.lib")
 #endif
 
 #if ZEN_PLATFORM_WINDOWS
@@ -28,6 +31,7 @@ ZEN_THIRD_PARTY_INCLUDES_END
 #	include <fcntl.h>
 #	include <sys/resource.h>
 #	include <sys/stat.h>
+#	include <pwd.h>
 #	include <unistd.h>
 #endif
 
@@ -38,6 +42,7 @@ ZEN_THIRD_PARTY_INCLUDES_END
 #	include <sys/resource.h>
 #	include <sys/stat.h>
 #	include <sys/syslimits.h>
+#	include <pwd.h>
 #	include <unistd.h>
 #endif
 
@@ -1702,6 +1707,31 @@ SearchPathForExecutable(std::string_view ExecutableName)
 #endif
 }
 
+std::filesystem::path
+PickDefaultSystemRootDirectory()
+{
+#if ZEN_PLATFORM_WINDOWS
+	// Pick sensible default
+	PWSTR	ProgramDataDir = nullptr;
+	HRESULT hRes		   = SHGetKnownFolderPath(FOLDERID_ProgramData, 0, NULL, &ProgramDataDir);
+
+	if (SUCCEEDED(hRes))
+	{
+		std::filesystem::path FinalPath(ProgramDataDir);
+		FinalPath /= L"Epic\\Zen";
+		::CoTaskMemFree(ProgramDataDir);
+
+		return FinalPath;
+	}
+
+	return L"";
+#else	// ZEN_PLATFORM_WINDOWS
+	int			  UserId = getuid();
+	const passwd* Passwd = getpwuid(UserId);
+	return std::filesystem::path(Passwd->pw_dir) / ".zen";
+#endif	// ZEN_PLATFORM_WINDOWS
+}
+
 //////////////////////////////////////////////////////////////////////////
 //
 // Testing related code follows...