Add kdestroy --all/-A

kuser/kdestroy.c

@@ -41,11 +41,13 @@ static int version_flag;
 static int unlog_flag = 1;
 #endif
 static int dest_tkt_flag = 1;
+static int all_flag = 0;
 
 struct getargs args[] = {
     { "credential",	0,   arg_string, &credential,
       "remove one credential", "principal" },
     { "cache",		'c', arg_string, &cache, "cache to destroy", "cache" },
+    { "all",		'A', arg_flag, &all_flag, "destroy all caches" },
 #ifndef NO_AFS
     { "unlog",		0,   arg_negative_flag, &unlog_flag,
       "do not destroy tokens", NULL },
@@ -97,17 +99,35 @@ main (int argc, char **argv)
     if (ret)
 	errx (1, "krb5_init_context failed: %d", ret);
 
-    if(cache == NULL) {
+    if (all_flag) {
-	cache = krb5_cc_default_name(context);
+	krb5_cccol_cursor cursor;
-	if (cache == NULL) {
-	    warnx ("krb5_cc_default_name: %s", krb5_get_err_text(context, ret));
-	    exit(1);
-	}
-    }
 
+	ret = krb5_cccol_cursor_new (context, &cursor);
+	if (ret)
+	    krb5_err(context, 1, ret, "krb5_cccol_cursor_new");
+
+	while (krb5_cccol_cursor_next (context, cursor, &ccache) == 0 && ccache != NULL) {
+	    
+	    ret = krb5_cc_destroy (context, ccache);
+	    if (ret) {
+		krb5_warn(context, ret, "krb5_cc_destroy");
+		exit_val = 1;
+	    }
+	}
+	krb5_cccol_cursor_free(context, &cursor);
+
+    } else {
+	if(cache == NULL) {
+	    ret = krb5_cc_default(context, &ccache);
+	    if (ret)
+		krb5_err(context, 1, ret, "krb5_cc_default");
+	} else {
 	    ret =  krb5_cc_resolve(context,
 				   cache,
 				   &ccache);
+	    if (ret)
+		krb5_err(context, 1, ret, "krb5_cc_resolve");
+	}
 
 	if (ret == 0) {
 	    if (credential) {
@@ -136,10 +156,7 @@ main (int argc, char **argv)
 		warnx ("krb5_cc_destroy: %s", krb5_get_err_text(context, ret));
 		exit_val = 1;
 	    }
-    } else {
+	}
-	warnx ("krb5_cc_resolve(%s): %s", cache,
-	       krb5_get_err_text(context, ret));
-	exit_val = 1;
     }
 
     krb5_free_context (context);