lib: Simplify reg/unreg API

The reg/unreg API is simplified to registering and unregistering a
single name with a single IPCP. The functionality associated with
registering names was moved from the IRMd to the irm tool. The
function to list IPCPs was simplified to return all IPCPs in the
system with their basic properties needed for management.

The above changes led to some needed changes in the irm tool and the
management functions that were depending on the previous behaviour of
list_ipcps.

Command line functionality to list IPCPs in the system is also added
to the irm tool.

Some older code was refactored.

Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>

1 files changed, 158 insertions, 0 deletions

diff --git a/src/tools/irm/irm_ipcp_list.c b/src/tools/irm/irm_ipcp_list.c
new file mode 100644
index 00000000..e16ca523
--- /dev/null
+++ b/src/tools/irm/irm_ipcp_list.c
@@ -0,0 +1,158 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2018
+ *
+ * Create IPC Processes
+ *
+ *    Dimitri Staessens <dimitri.staessens@ugent.be>
+ *    Sander Vrijders   <sander.vrijders@ugent.be>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <ouroboros/irm.h>
+
+#include "irm_ops.h"
+#include "irm_utils.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define NORMAL  "normal"
+#define UDP     "udp"
+#define ETH_LLC "eth-llc"
+#define ETH_DIX "eth-dix"
+#define LOCAL   "local"
+#define RAPTOR  "raptor"
+
+static void usage(void)
+{
+        printf("Usage: irm ipcp list\n"
+               "                [name  <ipcp name>]\n"
+               "                [layer <layer_name>]\n\n"
+               "                [type [TYPE]]\n\n"
+               "where TYPE = {" NORMAL " " LOCAL " "
+               UDP " " ETH_LLC " " ETH_DIX " " RAPTOR "}\n");
+}
+
+static char * str_type(enum ipcp_type type)
+{
+        switch(type) {
+        case IPCP_NORMAL:
+                return NORMAL;
+        case IPCP_ETH_LLC:
+                return ETH_LLC;
+        case IPCP_ETH_DIX:
+                return ETH_DIX;
+        case IPCP_UDP:
+                return UDP;
+        case IPCP_RAPTOR:
+                return RAPTOR;
+        case IPCP_LOCAL:
+                return LOCAL;
+        default:
+                return "UNKNOWN";
+        }
+};
+
+int do_list_ipcp(int     argc,
+                 char ** argv)
+{
+        char *             ipcp_type = NULL;
+        char *             ipcp_name = NULL;
+        enum ipcp_type     type      = -1;
+        struct ipcp_info * ipcps;
+        ssize_t            len;
+        ssize_t            i;
+
+        while (argc > 0) {
+                if (matches(*argv, "type") == 0) {
+                        ipcp_type = *(argv + 1);
+                } else if (matches(*argv, "name") == 0) {
+                        ipcp_name = *(argv + 1);
+                } else {
+                        printf("\"%s\" is unknown, try \"irm "
+                               "ipcp list\".\n", *argv);
+                        return -1;
+                }
+
+                argc -= 2;
+                argv += 2;
+        }
+
+        if (ipcp_type != NULL) {
+                if (strcmp(ipcp_type, NORMAL) == 0)
+                        type = IPCP_NORMAL;
+                else if (strcmp(ipcp_type, UDP) == 0)
+                        type = IPCP_UDP;
+                else if (strcmp(ipcp_type, LOCAL) == 0)
+                        type = IPCP_LOCAL;
+                else if (strcmp(ipcp_type, ETH_LLC) == 0)
+                        type = IPCP_ETH_LLC;
+                else if (strcmp(ipcp_type, ETH_DIX) == 0)
+                        type = IPCP_ETH_DIX;
+                else if (strcmp(ipcp_type, RAPTOR) == 0)
+                        type = IPCP_RAPTOR;
+                else {
+                        usage();
+                        return -1;
+                }
+        }
+
+        len = irm_list_ipcps(&ipcps);
+        if (len == 0) {
+                printf("No IPCPs in system.\n\n");
+                return 0;
+        }
+
+        /* FIXME: Implement filtering based on type and name. */
+        (void) type;
+        (void) ipcp_name;
+
+        printf("+---------+----------------------+------------+"
+               "----------------------+\n");
+        printf("| %7s | %20s | %10s | %20s |\n", "pid", "name", "type", "layer");
+        printf("+---------+----------------------+------------+"
+               "----------------------+\n");
+
+        for (i = 0; i < len; i++)
+                printf("| %7d | %20s | %10s | %20s |\n",
+                       ipcps[i].pid,
+                       ipcps[i].name,
+                       str_type(ipcps[i].type),
+                       ipcps[i].layer);
+
+        printf("+---------+----------------------+------------+"
+               "----------------------+\n\n");
+
+        free(ipcps);
+
+        return 0;
+}