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, 120 insertions, 82 deletions

diff --git a/src/tools/irm/irm_ipcp_bootstrap.c b/src/tools/irm/irm_ipcp_bootstrap.c
index 4eeedbd3..07dcea0f 100644
--- a/src/tools/irm/irm_ipcp_bootstrap.c
+++ b/src/tools/irm/irm_ipcp_bootstrap.c
@@ -36,6 +36,12 @@
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <ouroboros/irm.h>
+
+#include "irm_ops.h"
+#include "irm_utils.h"
+
+#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -43,10 +49,6 @@
 #ifdef __FreeBSD__
 #include <sys/socket.h>
 #endif
-#include <ouroboros/irm.h>
-
-#include "irm_ops.h"
-#include "irm_utils.h"
 
 #define NORMAL                 "normal"
 #define UDP                    "udp"
@@ -83,7 +85,7 @@ static void usage(void)
         printf("Usage: irm ipcp bootstrap\n"
                "                name <ipcp name>\n"
                "                layer <layer name>\n"
-               "                type [TYPE]\n"
+               "                [type [TYPE]]\n"
                "where TYPE = {" NORMAL " " LOCAL " "
                UDP " " ETH_LLC " " ETH_DIX " " RAPTOR "},\n\n"
                "if TYPE == " NORMAL "\n"
@@ -132,8 +134,8 @@ static void usage(void)
 int do_bootstrap_ipcp(int     argc,
                       char ** argv)
 {
-        char *             name           = NULL;
-        pid_t              pid;
+        char *             ipcp           = NULL;
+        pid_t              pid            = -1;
         struct ipcp_config conf;
         uint8_t            addr_size      = DEFAULT_ADDR_SIZE;
         uint8_t            eid_size       = DEFAULT_EID_SIZE;
@@ -145,10 +147,11 @@ int do_bootstrap_ipcp(int     argc,
         uint32_t           ip_addr        = 0;
         uint32_t           dns_addr       = DEFAULT_DDNS;
         char *             ipcp_type      = NULL;
-        char *             layer_name     = NULL;
+        enum ipcp_type     type;
+        char *             layer          = NULL;
         char *             dev            = NULL;
         uint16_t           ethertype      = DEFAULT_ETHERTYPE;
-        pid_t *            pids           = NULL;
+        struct ipcp_info * ipcps;
         ssize_t            len            = 0;
         int                i              = 0;
         bool               autobind       = false;
@@ -159,9 +162,9 @@ int do_bootstrap_ipcp(int     argc,
                 if (matches(*argv, "type") == 0) {
                         ipcp_type = *(argv + 1);
                 } else if (matches(*argv, "layer") == 0) {
-                        layer_name = *(argv + 1);
+                        layer = *(argv + 1);
                 } else if (matches(*argv, "name") == 0) {
-                        name = *(argv + 1);
+                        ipcp = *(argv + 1);
                 } else if (matches(*argv, "hash") == 0) {
                         if (strcmp(*(argv + 1), SHA3_224) == 0)
                                 hash_algo = DIR_HASH_SHA3_224;
@@ -231,98 +234,133 @@ int do_bootstrap_ipcp(int     argc,
                 argv += cargs;
         }
 
-        if (name == NULL || layer_name == NULL || ipcp_type == NULL) {
+        if (ipcp == NULL || layer == NULL) {
                 usage();
                 return -1;
         }
 
-        strcpy(conf.layer_info.layer_name, layer_name);
-        if (strcmp(ipcp_type, UDP) != 0)
-                conf.layer_info.dir_hash_algo = hash_algo;
-
-        if (strcmp(ipcp_type, NORMAL) == 0) {
-                conf.type           = IPCP_NORMAL;
-                conf.addr_size      = addr_size;
-                conf.eid_size       = eid_size;
-                conf.max_ttl        = max_ttl;
-                conf.addr_auth_type = addr_auth_type;
-                conf.routing_type   = routing_type;
-                conf.pff_type       = pff_type;
-        } else if (strcmp(ipcp_type, UDP) == 0) {
-                conf.type = IPCP_UDP;
-                if (ip_addr == 0) {
-                        usage();
-                        return -1;
-                }
-                conf.ip_addr = ip_addr;
-                conf.dns_addr = dns_addr;
-        } else if (strcmp(ipcp_type, LOCAL) == 0) {
-                conf.type = IPCP_LOCAL;
-        } else if (strcmp(ipcp_type, RAPTOR) == 0) {
-                conf.type = IPCP_RAPTOR;
-        } else if (strcmp(ipcp_type, ETH_LLC) == 0) {
-                conf.type = IPCP_ETH_LLC;
-                if (dev == NULL) {
-                        usage();
-                        return -1;
-                }
-                conf.dev = dev;
-        } else if (strcmp(ipcp_type, ETH_DIX) == 0) {
-                conf.type = IPCP_ETH_DIX;
-                if (dev == NULL) {
-                        usage();
-                        return -1;
+        len = irm_list_ipcps(&ipcps);
+        for (i = 0; i < len; i++) {
+                if (wildcard_match(ipcps[i].name, ipcp) == 0) {
+                        pid = ipcps[i].pid;
+                        break;
                 }
-                conf.dev = dev;
-                conf.ethertype = ethertype;
-        } else {
-                usage();
-                return -1;
         }
 
-        if (autobind && conf.type != IPCP_NORMAL) {
-                printf("Can only bind normal IPCPs, autobind disabled.\n");
-                autobind = false;
-        }
+        if (pid == -1) {
+                if (ipcp_type == NULL) {
+                        printf("No IPCPs matching %s found.\n\n", ipcp);
+                        goto fail;
+                } else {
+                        if (strcmp(ipcp_type, NORMAL) == 0)
+                                type = IPCP_NORMAL;
+                        else if (strcmp(ipcp_type, UDP) == 0)
+                                type = IPCP_UDP;
+                        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, LOCAL) == 0)
+                                type = IPCP_LOCAL;
+                        else if (strcmp(ipcp_type, RAPTOR) == 0)
+                                type = IPCP_RAPTOR;
+                        else goto fail_usage;
+                }
 
-        len = irm_list_ipcps(name, &pids);
-        if (len <= 0) {
-                pid = irm_create_ipcp(name, conf.type);
-                if (pid <= 0)
-                        return -1;
-                len = irm_list_ipcps(name, &pids);
+                pid = irm_create_ipcp(ipcp, type);
+                if (pid < 0)
+                        goto fail;
+                free(ipcps);
+                len = irm_list_ipcps(&ipcps);
         }
 
         for (i = 0; i < len; i++) {
-                if (autobind && irm_bind_process(pids[i], name)) {
-                        printf("Failed to bind %d to %s.\n", pids[i], name);
-                        free(pids);
-                        return -1;
-                }
+                if (wildcard_match(ipcps[i].name, ipcp) == 0) {
+                        pid = ipcps[i].pid;
+                        if (ipcp_type != NULL && type != ipcps[i].type) {
+                                printf("Types do not match.\n\n");
+                                goto fail;
+                        }
+                        conf.type = ipcps[i].type;
 
-                if (autobind && irm_bind_process(pids[i], layer_name)) {
-                        printf("Failed to bind %d to %s.\n",
-                               pids[i], layer_name);
-                        irm_unbind_process(pids[i], name);
-                        free(pids);
-                        return -1;
-                }
+                        if (autobind && conf.type != IPCP_NORMAL) {
+                                printf("Can only bind normal IPCPs, "
+                                       "autobind disabled.\n");
+                                autobind = false;
+                        }
+
+                        strcpy(conf.layer_info.layer_name, layer);
+                        if (conf.type == IPCP_UDP)
+                                conf.layer_info.dir_hash_algo = hash_algo;
 
-                if (irm_bootstrap_ipcp(pids[i], &conf)) {
-                        if (autobind) {
-                                irm_unbind_process(pids[i], name);
-                                irm_unbind_process(pids[i], layer_name);
+                        switch (conf.type) {
+                        case IPCP_NORMAL:
+                                conf.addr_size      = addr_size;
+                                conf.eid_size       = eid_size;
+                                conf.max_ttl        = max_ttl;
+                                conf.addr_auth_type = addr_auth_type;
+                                conf.routing_type   = routing_type;
+                                conf.pff_type       = pff_type;
+                                break;
+                        case IPCP_UDP:
+                                if (ip_addr == 0)
+                                        goto fail_usage;
+                                conf.ip_addr = ip_addr;
+                                conf.dns_addr = dns_addr;
+                                break;
+                        case IPCP_ETH_LLC:
+                                if (dev == NULL)
+                                        goto fail_usage;
+                                conf.dev = dev;
+                                break;
+                        case IPCP_ETH_DIX:
+                                if (dev == NULL)
+                                        goto fail_usage;
+                                conf.dev = dev;
+                                conf.ethertype = ethertype;
+                                break;
+                        case IPCP_LOCAL:
+                                /* FALLTHRU */
+                        case IPCP_RAPTOR:
+                                break;
+                        default:
+                                assert(false);
+                                break;
+                        }
+
+                        if (autobind && irm_bind_process(pid, ipcp)) {
+                                printf("Failed to bind %d to %s.\n", pid, ipcp);
+                                goto fail;
+                        }
+
+                        if (autobind && irm_bind_process(pid, layer)) {
+                                printf("Failed to bind %d to %s.\n",
+                                       pid, layer);
+                                irm_unbind_process(pid, ipcp);
+                                goto fail;
+                        }
+
+                        if (irm_bootstrap_ipcp(pid, &conf)) {
+                                if (autobind) {
+                                        irm_unbind_process(pid, ipcp);
+                                        irm_unbind_process(pid, layer);
+                                }
+                                goto fail;
                         }
-                        free(pids);
-                        return -1;
                 }
         }
 
-        free(pids);
+        free(ipcps);
 
         return 0;
 
  unknown_param:
         printf("Unknown parameter for %s: \"%s\".\n", *argv, *(argv + 1));
         return -1;
+
+ fail_usage:
+        usage();
+ fail:
+        free(ipcps);
+        return -1;
 }