lib, irmd, tools, ipcpd: updates to dev API.

The registration function has been moved to the irm tool, applications
now need to be registered by an administrator. Currently only supports
one instance per registered name, and an AP can be registered under
only one name.

The irmd can now start a registered server application on demand.

For the full functionality of the tool, execute "irm register".

AP name removed from flow allocation. Flow allocation does not send
the source ap name as it is quite useless. The accept() call now only
returns the AE name.

1 files changed, 116 insertions, 0 deletions

diff --git a/src/tools/irm/irm_unregister.c b/src/tools/irm/irm_unregister.c
new file mode 100644
index 00000000..d778e285
--- /dev/null
+++ b/src/tools/irm/irm_unregister.c
@@ -0,0 +1,116 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Unregister IPC Processes in an N-1 DIF
+ *
+ *    Dimitri Staessens <[email protected]>
+ *    Sander Vrijders   <[email protected]>
+ *
+ * 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.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <ouroboros/config.h>
+#include <stdio.h>
+#include <ouroboros/irm.h>
+#include <ouroboros/common.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <signal.h>
+
+#include "irm_ops.h"
+#include "irm_utils.h"
+
+#define MAX_DIFS 128
+
+static void usage()
+{
+        printf("Usage: irm unregister\n"
+               "           [name <name>]\n"
+               "           [apn <application process name>]\n"
+               "           [api <application process instance>]\n"
+               "           dif <dif name to unregister from>\n"
+               "           [dif <dif name to unregister from>]\n"
+               "           [... (maximum %d difs)]\n"
+               "           [hard] (unregisters everything using that name)\n"
+               , MAX_DIFS);
+}
+
+int do_unregister(int argc, char ** argv)
+{
+        instance_name_t api = {NULL, 0};
+        char * difs[MAX_DIFS];
+        size_t difs_len = 0;
+        char * name = NULL;
+        bool hard_opt = false;
+        bool ap_id = false;
+        instance_name_t * ptr_api = NULL;
+
+        while (argc > 0) {
+                if (matches(*argv, "name") == 0) {
+                        name = *(argv + 1);
+                } else if (matches(*argv, "ap") == 0) {
+                        api.name = *(argv + 1);
+                        ptr_api = &api;
+                } else if (matches(*argv, "api") == 0) {
+                        api.id = atoi(*(argv + 1));
+                        ap_id = true;
+                } else if (strcmp(*argv, "hard") == 0) {
+                        hard_opt = true;
+                        /* this has no value */
+                        ++argc;
+                        --argv;
+                } else if (matches(*argv, "dif") == 0) {
+                        difs[difs_len++] = *(argv + 1);
+                        if (difs_len > MAX_DIFS) {
+                                printf("Too many difs specified\n");
+                                return -1;
+                        }
+                } else {
+                        printf("\"%s\" is unknown, try \"irm "
+                               "unregister\".\n", *argv);
+                        return -1;
+                }
+
+                argc -= 2;
+                argv += 2;
+        }
+
+        if (difs_len == 0) {
+                usage();
+                return -1;
+        }
+
+        if (name == NULL && api.name == NULL) {
+                printf("apn or name must be set.\n");
+                usage();
+                return -1;
+        }
+
+        if (ap_id && api.name == NULL) {
+                printf("api requires apn.\n");
+                usage();
+                return -1;
+        }
+
+        if (hard_opt && api.name != NULL) {
+                printf("apn and/or api must not be set when using hard.\n");
+                usage();
+                return -1;
+        }
+
+        return irm_unreg(name, ptr_api, difs, difs_len, hard_opt);
+}