tools: Add tool to connect IPCP components

This enables user-written tools to instruct IPCPs to establish and
tear down connections (a.k.a. adjacencies) between its internal
components (Management and Data Transfer).

For more info, do "irm ipcp connect" or "irm ipcp disconnect" on the
command line.

This commit exposes a deletion bug in the RIB where FSO's fail to
unpack/parse. This will be fixed when the RIB is deprecated.

1 files changed, 94 insertions, 0 deletions

diff --git a/src/tools/irm/irm_ipcp_disconnect.c b/src/tools/irm/irm_ipcp_disconnect.c
new file mode 100644
index 00000000..8f83f3e8
--- /dev/null
+++ b/src/tools/irm/irm_ipcp_disconnect.c
@@ -0,0 +1,94 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Connect components of normal IPC Processes
+ *
+ *    Dimitri Staessens <dimitri.staessens@ugent.be>
+ *    Sander Vrijders   <sander.vrijders@ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#include <ouroboros/irm.h>
+
+#include "irm_ops.h"
+#include "irm_utils.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define DT      "dt"
+#define MGMT    "mgmt"
+
+static void usage(void)
+{
+        printf("Usage: irm ipcp disconnect\n"
+               "                name <ipcp name>\n"
+               "                comp <COMPONENT>\n"
+               "                dst  <name of destination IPCP>\n"
+               "where COMPONENT = {" DT " " MGMT "},\n\n");
+}
+
+int do_disconnect_ipcp(int     argc,
+                       char ** argv)
+{
+        char *  name      = NULL;
+        char *  dst_name  = NULL;
+        char *  comp_name = NULL;
+        pid_t * apis      = NULL;
+        ssize_t len       = 0;
+
+        while (argc > 0) {
+                if (strcmp(*argv, "name") == 0) {
+                        name = *(argv + 1);
+                } else if (matches(*argv, "dst") == 0) {
+                        dst_name = *(argv + 1);
+                } else if (matches(*argv, "comp") == 0) {
+                        comp_name = *(argv + 1);
+                } else {
+                        printf("\"%s\" is unknown, try \"irm "
+                               "ipcpi connect\".\n", *argv);
+                        return -1;
+                }
+
+                argc -= 2;
+                argv += 2;
+        }
+
+        if (name == NULL || dst_name == NULL || comp_name == NULL) {
+                usage();
+                return -1;
+        }
+
+        len = irm_list_ipcps(name, &apis);
+        if (len != 1)
+                return -1;
+
+        if (!strcmp(comp_name, DT))
+                comp_name = DT_AE;
+
+        if (!strcmp(comp_name , MGMT))
+                comp_name = MGMT_AE;
+
+        if (irm_disconnect_ipcp(apis[0], dst_name, comp_name)) {
+                free(apis);
+                return -1;
+        }
+
+        if (apis != NULL)
+                free(apis);
+
+        return 0;
+}