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View File kdm-audit-log.diff of Package kdebase4-workspace (Project DISCONTINUED:openSUSE:11.2)

Index: cmake/modules/FindAudit.cmake
===================================================================
--- /dev/null
+++ cmake/modules/FindAudit.cmake
@@ -0,0 +1,12 @@
+FIND_LIBRARY(AUDIT_LIBRARIES NAMES audit)
+FIND_PATH(AUDIT_INCLUDE_DIR libaudit.h)
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Audit DEFAULT_MSG AUDIT_INCLUDE_DIR AUDIT_LIBRARIES )
+MACRO_LOG_FEATURE(AUDIT_FOUND "audit" "Audit Logging for kdm" "http://people.redhat.com/sgrubb/audit/" FALSE)
+
+MARK_AS_ADVANCED(AUDIT_INCLUDE_DIR AUDIT_LIBRARIES)
+
+if ( AUDIT_LIBRARIES AND AUDIT_INCLUDE_DIR )
+	set(HAVE_LIBAUDIT 1)
+endif ( AUDIT_LIBRARIES AND AUDIT_INCLUDE_DIR )
Index: kdm/backend/client.c
===================================================================
--- kdm/backend/client.c.orig
+++ kdm/backend/client.c
@@ -88,6 +88,14 @@ extern int loginsuccess( const char *Use
 #endif
 #include <signal.h>
 
+#define  AU_FAILED 0
+#define  AU_SUCCESS 1
+#ifdef HAVE_LIBAUDIT
+#include <libaudit.h>
+#else
+#define log_to_audit_system(l,h,d,s)	do { ; } while (0)
+#endif
+
 /*
  * Session data, mostly what struct verify_info was for
  */
@@ -337,6 +345,56 @@ getPAMXauthData( const char *xauth_file
 }
 # endif
 
+ /**
+ * log_to_audit_system:
+ * @login: Name of user
+ * @hostname: Name of host machine
+ * @tty: Name of display 
+ * @success: 1 for success, 0 for failure
+ *
+ * Logs the success or failure of the login attempt with the linux kernel
+ * audit system. The intent is to capture failed events where the user
+ * fails authentication or otherwise is not permitted to login. There are
+ * many other places where pam could potentially fail and cause login to 
+ * fail, but these are system failures rather than the signs of an account
+ * being hacked.
+ *
+ * Returns nothing.
+ */
+
+#ifdef HAVE_LIBAUDIT
+static void 
+log_to_audit_system (const char *loginname,
+		     const char *hostname,
+		     const char *tty,
+		     int success)
+{
+	struct passwd *pw;
+	char buf[64];
+	int audit_fd;
+
+	audit_fd = audit_open();
+	if (loginname)
+		pw = getpwnam(loginname);
+	else {
+		loginname = "unknown";
+		pw = NULL;
+	}
+	Debug("log_to_audit %p %s\n", pw, loginname);
+
+	if (pw) {
+		snprintf(buf, sizeof(buf), "uid=%d", pw->pw_uid);
+		audit_log_user_message(audit_fd, AUDIT_USER_LOGIN,
+			buf, hostname, NULL, tty, (int)success);
+	} else {
+		snprintf(buf, sizeof(buf), "acct=%s", loginname);
+		audit_log_user_message(audit_fd, AUDIT_USER_LOGIN,
+			buf, hostname, NULL, tty, (int)success);
+	}
+	close(audit_fd);
+}
+#endif
+
 static int
 doPAMAuth( const char *psrv, struct pam_data *pdata )
 {
@@ -420,6 +478,8 @@ doPAMAuth( const char *psrv, struct pam_
 		gSendStr( curuser );
 	}
 	if (pretc != PAM_SUCCESS) {
+	        /* Log the failed login attempt */
+	        log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 		switch (pretc) {
 		case PAM_USER_UNKNOWN:
 		case PAM_AUTH_ERR:
@@ -766,6 +826,8 @@ verify( GConvFunc gconv, int rootok )
 	if (!p->pw_uid) {
 		if (!rootok && !td->allowRootLogin)
 			V_RET_FAIL( "Root logins are not allowed" );
+		/* Log the failed login attempt */
+ 		log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 		wipeStr( curpass );
 		curpass = 0;
 		return True; /* don't deny root to log in */
@@ -806,6 +868,8 @@ verify( GConvFunc gconv, int rootok )
 			}
 			if (pretc == PAM_SUCCESS)
 				break;
+			/* Log the failed login attempt */
+			log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 			/* effectively there is only PAM_AUTHTOK_ERR */
 			gSendInt( V_FAIL );
 		}
@@ -893,6 +957,8 @@ verify( GConvFunc gconv, int rootok )
 				displayStr( V_MSG_ERR,
 				            "Your account has expired;"
 				            " please contact your system administrator" );
+ 				/* Log the failed login attempt */
+ 				log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 				gSendInt( V_FAIL );
 				LC_RET0;
 			} else if (tim > (expir - warntime) && !quietlog) {
@@ -919,6 +985,8 @@ verify( GConvFunc gconv, int rootok )
 				displayStr( V_MSG_ERR,
 				            "Your account has expired;"
 				            " please contact your system administrator" );
+				/* Log the failed login attempt */
+ 				log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 				gSendInt( V_FAIL );
 				LC_RET0;
 			}
@@ -970,6 +1038,8 @@ verify( GConvFunc gconv, int rootok )
 		}
 		displayStr( V_MSG_ERR,
 		            "Logins are not allowed at the moment.\nTry again later" );
+ 		/* Log the failed login attempt */
+ 		log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 		gSendInt( V_FAIL );
 		LC_RET0;
 	}
@@ -979,6 +1049,8 @@ verify( GConvFunc gconv, int rootok )
 	if (!auth_timeok( lc, time( NULL ) )) {
 		displayStr( V_MSG_ERR,
 		            "You are not allowed to login at the moment" );
+ 		/* Log the failed login attempt */
+ 		log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 		gSendInt( V_FAIL );
 		LC_RET0;
 	}
@@ -990,6 +1062,8 @@ verify( GConvFunc gconv, int rootok )
 			debug( "shell not in /etc/shells\n" );
 			endusershell();
 			V_RET_FAIL( "Your login shell is not listed in /etc/shells" );
+			/* Log the failed login attempt */
+			log_to_audit_system (curuser, td->remoteHost, td->name, AU_FAILED);
 		}
 		if (!strcmp( s, p->pw_shell )) {
 			endusershell();
@@ -1517,6 +1591,9 @@ startClient( volatile int *pid )
 # define D_LOGIN_SETGROUP 0
 #endif /* USE_PAM */
 
+ 	/* Login succeeded */
+ 	log_to_audit_system (curuser, td->remoteHost, td->name, AU_SUCCESS);
+ 
 	removeAuth = True;
 	chownCtrl( &td->ctrl, curuid );
 	ctltalk.pipe = &ctlpipe;
Index: kdm/ConfigureChecks.cmake
===================================================================
--- kdm/ConfigureChecks.cmake.orig
+++ kdm/ConfigureChecks.cmake
@@ -221,4 +221,6 @@ if (NOT LIBEXEC_INSTALL_DIR STREQUAL "${
     endif (NOT inip)
 endif (NOT LIBEXEC_INSTALL_DIR STREQUAL "${BIN_INSTALL_DIR}")
 
+find_package(Audit)
+
 configure_file(config-kdm.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-kdm.h)