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, 65 insertions, 70 deletions

diff --git a/src/lib/irm.c b/src/lib/irm.c
index c12ab893..6a9f837e 100644
--- a/src/lib/irm.c
+++ b/src/lib/irm.c
@@ -34,7 +34,7 @@
 #include <sys/stat.h>
 
 pid_t irm_create_ipcp(const char *   name,
-                      enum ipcp_type ipcp_type)
+                      enum ipcp_type type)
 {
         irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
@@ -44,9 +44,9 @@ pid_t irm_create_ipcp(const char *   name,
                 return -EINVAL;
 
         msg.code          = IRM_MSG_CODE__IRM_CREATE_IPCP;
-        msg.dst_name      = (char *) name;
+        msg.name          = (char *) name;
         msg.has_ipcp_type = true;
-        msg.ipcp_type     = ipcp_type;
+        msg.ipcp_type     = type;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -54,7 +54,7 @@ pid_t irm_create_ipcp(const char *   name,
 
         if (!recv_msg->has_result) {
                 irm_msg__free_unpacked(recv_msg, NULL);
-                return -1;
+                return -EIRMD;
         }
 
         ret = recv_msg->result;
@@ -174,8 +174,8 @@ int irm_connect_ipcp(pid_t        pid,
         int         ret;
 
         msg.code      = IRM_MSG_CODE__IRM_CONNECT_IPCP;
-        msg.dst_name  = (char *) dst;
-        msg.comp_name = (char *) component;
+        msg.dst       = (char *) dst;
+        msg.comp      = (char *) component;
         msg.has_pid   = true;
         msg.pid       = pid;
 
@@ -202,11 +202,11 @@ int irm_disconnect_ipcp(pid_t        pid,
         irm_msg_t * recv_msg = NULL;
         int         ret;
 
-        msg.code      = IRM_MSG_CODE__IRM_DISCONNECT_IPCP;
-        msg.dst_name  = (char *) dst;
-        msg.comp_name = (char *) component;
-        msg.has_pid   = true;
-        msg.pid       = pid;
+        msg.code    = IRM_MSG_CODE__IRM_DISCONNECT_IPCP;
+        msg.dst     = (char *) dst;
+        msg.comp    = (char *) component;
+        msg.has_pid = true;
+        msg.pid     = pid;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -223,38 +223,47 @@ int irm_disconnect_ipcp(pid_t        pid,
         return ret;
 }
 
-ssize_t irm_list_ipcps(const char * name,
-                       pid_t **     pids)
+ssize_t irm_list_ipcps(struct ipcp_info ** ipcps)
 {
         irm_msg_t msg        = IRM_MSG__INIT;
-        irm_msg_t * recv_msg = NULL;
-        size_t nr            = 0;
+        irm_msg_t * recv_msg;
+        size_t nr;
         size_t i;
 
-        if (pids == NULL)
+        if (ipcps == NULL)
                 return -EINVAL;
 
+        *ipcps = NULL;
+
         msg.code     = IRM_MSG_CODE__IRM_LIST_IPCPS;
-        msg.dst_name = (char *) name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
                 return -EIRMD;
 
-        if (recv_msg->pids == NULL) {
+        if (recv_msg->ipcps == NULL) {
                 irm_msg__free_unpacked(recv_msg, NULL);
-                return -1;
+                return 0;
+        }
+
+        nr = recv_msg->n_ipcps;
+        if (nr == 0) {
+                irm_msg__free_unpacked(recv_msg, NULL);
+                return 0;
         }
 
-        nr = recv_msg->n_pids;
-        *pids = malloc(nr * sizeof(pid_t));
-        if (*pids == NULL) {
+        *ipcps = malloc(nr * sizeof(**ipcps));
+        if (*ipcps == NULL) {
                 irm_msg__free_unpacked(recv_msg, NULL);
                 return -ENOMEM;
         }
 
-        for (i = 0; i < nr; i++)
-                (*pids)[i] = recv_msg->pids[i];
+        for (i = 0; i < nr; i++) {
+                (*ipcps)[i].pid   = recv_msg->ipcps[i]->pid;
+                (*ipcps)[i].type  = recv_msg->ipcps[i]->type;
+                strcpy((*ipcps)[i].name, recv_msg->ipcps[i]->name);
+                strcpy((*ipcps)[i].layer, recv_msg->ipcps[i]->layer);
+        }
 
         irm_msg__free_unpacked(recv_msg, NULL);
 
@@ -262,30 +271,23 @@ ssize_t irm_list_ipcps(const char * name,
 }
 
 int irm_enroll_ipcp(pid_t        pid,
-                    const char * layer_name)
+                    const char * dst)
 {
         irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
         int         ret      = -1;
 
-        if (pid == -1 || layer_name == NULL)
+        if (pid == -1 || dst == NULL)
                 return -EINVAL;
 
         msg.code         = IRM_MSG_CODE__IRM_ENROLL_IPCP;
         msg.has_pid      = true;
         msg.pid          = pid;
-        msg.n_layer_name = 1;
-        msg.layer_name   = malloc(sizeof(*(msg.layer_name)));
-        if (msg.layer_name == NULL)
-                return -ENOMEM;
-
-        msg.layer_name[0] = (char *) layer_name;
+        msg.dst          = (char *) dst;
 
         recv_msg = send_recv_irm_msg(&msg);
-        if (recv_msg == NULL) {
-                free(msg.layer_name);
+        if (recv_msg == NULL)
                 return -EIRMD;
-        }
 
         if (!recv_msg->has_result) {
                 irm_msg__free_unpacked(recv_msg, NULL);
@@ -295,7 +297,6 @@ int irm_enroll_ipcp(pid_t        pid,
         ret = recv_msg->result;
         irm_msg__free_unpacked(recv_msg, NULL);
 
-        free(msg.layer_name);
         return ret;
 }
 
@@ -403,9 +404,9 @@ int irm_bind_program(const char * prog,
                 return ret;
         }
 
-        msg.code      = IRM_MSG_CODE__IRM_BIND_PROGRAM;
-        msg.dst_name  = (char *) name;
-        msg.prog_name = full_name;
+        msg.code = IRM_MSG_CODE__IRM_BIND_PROGRAM;
+        msg.name = (char *) name;
+        msg.prog = full_name;
 
         if (argv != NULL) {
                 msg.n_args = argc;
@@ -443,10 +444,10 @@ int irm_bind_process(pid_t        pid,
         if (name == NULL)
                 return -EINVAL;
 
-        msg.code     = IRM_MSG_CODE__IRM_BIND_PROCESS;
-        msg.has_pid  = true;
-        msg.pid      = pid;
-        msg.dst_name = (char *) name;
+        msg.code    = IRM_MSG_CODE__IRM_BIND_PROCESS;
+        msg.has_pid = true;
+        msg.pid     = pid;
+        msg.name    = (char *) name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -473,9 +474,9 @@ int irm_unbind_program(const char * prog,
         if (name == NULL)
                 return -EINVAL;
 
-        msg.code      = IRM_MSG_CODE__IRM_UNBIND_PROGRAM;
-        msg.prog_name = (char *) prog;
-        msg.dst_name  = (char *) name;
+        msg.code = IRM_MSG_CODE__IRM_UNBIND_PROGRAM;
+        msg.prog = (char *) prog;
+        msg.name = (char *) name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -502,10 +503,10 @@ int irm_unbind_process(pid_t        pid,
         if (name == NULL)
                 return -EINVAL;
 
-        msg.code = IRM_MSG_CODE__IRM_UNBIND_PROCESS;
-        msg.has_pid  = true;
-        msg.pid      = pid;
-        msg.dst_name = (char *) name;
+        msg.code    = IRM_MSG_CODE__IRM_UNBIND_PROCESS;
+        msg.has_pid = true;
+        msg.pid     = pid;
+        msg.name    = (char *) name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -522,23 +523,20 @@ int irm_unbind_process(pid_t        pid,
         return ret;
 }
 
-int irm_reg(const char * name,
-            char **      layers,
-            size_t       len)
+int irm_reg(pid_t        pid,
+            const char * name)
 {
         irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
         int         ret      = -1;
 
-        if (name == NULL || layers == NULL || len == 0)
+        if (name == NULL)
                 return -EINVAL;
 
-        msg.code = IRM_MSG_CODE__IRM_REG;
-
-        msg.dst_name = (char *) name;
-
-        msg.layer_name   = layers;
-        msg.n_layer_name = len;
+        msg.code    = IRM_MSG_CODE__IRM_REG;
+        msg.has_pid = true;
+        msg.pid     = pid;
+        msg.name    = (char *) name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -556,23 +554,20 @@ int irm_reg(const char * name,
 }
 
 
-int irm_unreg(const char * name,
-              char **      layers,
-              size_t       len)
+int irm_unreg(pid_t        pid,
+              const char * name)
 {
         irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
         int         ret      = -1;
 
-        if (name == NULL || layers == NULL || len == 0)
+        if (name == NULL)
                 return -EINVAL;
 
-        msg.code = IRM_MSG_CODE__IRM_UNREG;
-
-        msg.dst_name = (char *) name;
-
-        msg.layer_name   = (char **) layers;
-        msg.n_layer_name = len;
+        msg.code    = IRM_MSG_CODE__IRM_UNREG;
+        msg.has_pid = true;
+        msg.pid     = pid;
+        msg.name    = (char *) name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)