launch_daemon: We can now talk to the authentication manager.

* When creating the port of the registrar's authentication manager, we
  now set it manually, so that the user/group functions work.
* This allows LaunchDaemon::_StartSession() to set up the user, and
  groups as needed.

headers/private/libroot/user_group.h

@@ -89,6 +89,7 @@ public:
 
 
 port_id		get_registrar_authentication_port();
+void		set_registrar_authentication_port(port_id port);
 status_t	send_authentication_request_to_registrar(KMessage& request,
 				KMessage& reply);
 

src/servers/launch/Jamfile

@@ -1,6 +1,6 @@
 SubDir HAIKU_TOP src servers launch ;
 
-UsePrivateHeaders app package shared storage support ;
+UsePrivateHeaders app libroot shared storage support ;
 UsePrivateSystemHeaders ;
 
 UseHeaders [ FDirName $(HAIKU_TOP) src bin multiuser ] ;

src/servers/launch/Job.cpp

@@ -11,6 +11,8 @@
 #include <Message.h>
 #include <Roster.h>
 
+#include <user_group.h>
+
 #include "Target.h"
 
 
@@ -241,6 +243,11 @@ Job::Init(const Finder& finder, std::set<BString>& dependencies)
 			break;
 		}
 		iterator->second.SetInt32("port", port);
+
+		if (name == "x-vnd.haiku-registrar:auth") {
+			// Allow the launch_daemon to access the registrar authentication
+			BPrivate::set_registrar_authentication_port(port);
+		}
 	}
 
 	if (fInitStatus == B_OK && fCreateDefaultPort && !defaultPort) {

src/servers/launch/LaunchDaemon.cpp

@@ -702,7 +702,7 @@ LaunchDaemon::_StartSession(const char* login)
 {
 	// TODO: enable user/group code
 	// The launch_daemon currently cannot talk to the registrar, though
-/*
+
 	struct passwd* passwd = getpwnam(login);
 	if (passwd == NULL)
 		return B_NAME_NOT_FOUND;
@@ -712,7 +712,6 @@ LaunchDaemon::_StartSession(const char* login)
 	// Check if there is a user session running already
 	uid_t user = passwd->pw_uid;
 	gid_t group = passwd->pw_gid;
-*/
 
 	Unlock();
 
@@ -720,22 +719,12 @@ LaunchDaemon::_StartSession(const char* login)
 		if (setsid() < 0)
 			exit(EXIT_FAILURE);
 
-/*
+		if (initgroups(login, group) == -1)
-debug_printf("session leader...\n");
-		if (initgroups(login, group) == -1) {
-debug_printf("1.ouch: %s\n", strerror(errno));
 			exit(EXIT_FAILURE);
-		}
+		if (setgid(group) != 0)
-		//endgrent();
-		if (setgid(group) != 0) {
-debug_printf("2.ouch: %s\n", strerror(errno));
 			exit(EXIT_FAILURE);
-		}
+		if (setuid(user) != 0)
-		if (setuid(user) != 0) {
-debug_printf("3.ouch: %s\n", strerror(errno));
 			exit(EXIT_FAILURE);
-		}
-*/
 
 		// TODO: This leaks the parent application
 		be_app = NULL;

src/system/libroot/posix/user_group_common.cpp

@@ -67,6 +67,13 @@ BPrivate::get_registrar_authentication_port()
 }
 
 
+void
+BPrivate::set_registrar_authentication_port(port_id port)
+{
+	sRegistrarPort = port;
+}
+
+
 status_t
 BPrivate::send_authentication_request_to_registrar(KMessage& request,
 	KMessage& reply)