swanctl: Add --counters command
authorTobias Brunner <tobias@strongswan.org>
Thu, 24 Aug 2017 15:44:45 +0000 (17:44 +0200)
committerTobias Brunner <tobias@strongswan.org>
Wed, 8 Nov 2017 15:28:28 +0000 (16:28 +0100)
src/swanctl/Makefile.am
src/swanctl/command.h
src/swanctl/commands/counters.c [new file with mode: 0644]

index 19815c5..3a432c4 100644 (file)
@@ -2,6 +2,7 @@ sbin_PROGRAMS = swanctl
 
 swanctl_SOURCES = \
        command.c command.h \
+       commands/counters.c \
        commands/initiate.c \
        commands/terminate.c \
        commands/rekey.c \
index c178114..0d93ae4 100644 (file)
@@ -27,7 +27,7 @@
 /**
  * Maximum number of commands (+1).
  */
-#define MAX_COMMANDS 25
+#define MAX_COMMANDS 26
 
 /**
  * Maximum number of options in a command (+3)
diff --git a/src/swanctl/commands/counters.c b/src/swanctl/commands/counters.c
new file mode 100644 (file)
index 0000000..77485c2
--- /dev/null
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2017 Tobias Brunner
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+
+#include "command.h"
+
+CALLBACK(counters_kv, int,
+       void *null, vici_res_t *res, char *name, void *value, int len)
+{
+       if (chunk_printable(chunk_create(value, len), NULL, ' '))
+       {
+               printf("  %-22s: %.*s\n", name, len, value);
+       }
+       return 0;
+}
+
+CALLBACK(conns_sn, int,
+       void *null, vici_res_t *res, char *name)
+{
+       printf("%s:\n", strlen(name) ? name : "global");
+       return vici_parse_cb(res, NULL, counters_kv, NULL, NULL);
+}
+
+CALLBACK(counters_sn, int,
+       void *null, vici_res_t *res, char *name)
+{
+       return vici_parse_cb(res, conns_sn, NULL, NULL, NULL);
+}
+
+static int counters(vici_conn_t *conn)
+{
+       vici_req_t *req;
+       vici_res_t *res;
+       command_format_options_t format = COMMAND_FORMAT_NONE;
+       char *arg, *name = NULL;
+       int ret;
+       bool all = FALSE, reset = FALSE;
+
+       while (TRUE)
+       {
+               switch (command_getopt(&arg))
+               {
+                       case 'h':
+                               return command_usage(NULL);
+                       case 'P':
+                               format |= COMMAND_FORMAT_PRETTY;
+                               /* fall through to raw */
+                       case 'r':
+                               format |= COMMAND_FORMAT_RAW;
+                               continue;
+                       case 'n':
+                               name = arg;
+                               continue;
+                       case 'a':
+                               all = TRUE;
+                               continue;
+                       case 'R':
+                               reset = TRUE;
+                               continue;
+                       case EOF:
+                               break;
+                       default:
+                               return command_usage("invalid --counters option");
+               }
+               break;
+       }
+       if (reset)
+       {
+               req = vici_begin("reset-counters");
+       }
+       else
+       {
+               req = vici_begin("get-counters");
+       }
+       if (all)
+       {
+               vici_add_key_valuef(req, "all", "yes");
+       }
+       else if (name)
+       {
+               vici_add_key_valuef(req, "name", "%s", name);
+       }
+
+       res = vici_submit(req, conn);
+       if (!res)
+       {
+               ret = errno;
+               fprintf(stderr, "%s-counters request failed: %s\n",
+                               reset ? "reset" : "get", strerror(errno));
+               return ret;
+       }
+       if (format & COMMAND_FORMAT_RAW)
+       {
+               vici_dump(res, "counters reply", format & COMMAND_FORMAT_PRETTY,
+                                 stdout);
+       }
+       else
+       {
+               if (streq(vici_find_str(res, "no", "success"), "yes"))
+               {
+                       if (reset)
+                       {
+                               printf("reset-counters completed successfully\n");
+                       }
+                       else if (vici_parse_cb(res, counters_sn, NULL, NULL, NULL) != 0)
+                       {
+                               fprintf(stderr, "parsing get-counters reply failed: %s\n",
+                                               strerror(errno));
+                       }
+               }
+               else
+               {
+                       fprintf(stderr, "%s-counters failed: %s\n", reset ? "reset" : "get",
+                                       vici_find_str(res, "", "errmsg"));
+                       ret = 1;
+               }
+       }
+       vici_free_res(res);
+       return 0;
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+       command_register((command_t) {
+               counters, 'c', "counters", "list or reset IKE event counters",
+               {"[--name <name>|--all] [--reset] [--raw|--pretty]"},
+               {
+                       {"help",                'h', 0, "show usage information"},
+                       {"name",                'n', 1, "connection name, omit for global counters"},
+                       {"all",                 'a', 0, "get/reset counters for all tracked connections"},
+                       {"reset",               'R', 0, "reset the counters"},
+                       {"raw",                 'r', 0, "dump raw response message"},
+                       {"pretty",              'P', 0, "dump raw response message in pretty print"},
+               }
+       });
+}