lib, irmd, ipcpd: Change of IRM API

This changes the IRM API after discussions with Dimitri. The register
operation is now split into a bind and register operation. The same
for unregister; unbind and unregister. PIDs are now used as the
application instance name. A name for a PID is only provided for
scriptability in bash. It is therefore also no longer passed down to
the IPCP. Every operation on an IPCP through the IRM API has to use
the PID. Quering of the PIDs by name is possible. The IRM tool has
been updated to use this new API as well. A subcommand 'ipcp' has been
added for operations that take effect on IPCPs only.

Fixes #12

5 files changed, 106 insertions, 121 deletions

diff --git a/include/ouroboros/CMakeLists.txt b/include/ouroboros/CMakeLists.txt
index 2ea86883..68c88a18 100644
--- a/include/ouroboros/CMakeLists.txt
+++ b/include/ouroboros/CMakeLists.txt
@@ -5,13 +5,12 @@ configure_file(
 set(HEADER_FILES
         cdap.h
         dev.h
-        dif_config.h
         errno.h
         flow.h
-        instance_name.h
         irm.h
+        irm_config.h
         nsm.h
         qos.h
 )
 
-install(FILES ${HEADER_FILES} DESTINATION /usr/include/ouroboros)
+install(FILES ${HEADER_FILES} DESTINATION usr/include/ouroboros)
diff --git a/include/ouroboros/instance_name.h b/include/ouroboros/instance_name.h
deleted file mode 100644
index 92681504..00000000
--- a/include/ouroboros/instance_name.h
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * RINA naming related utilities
- *
- *    Sander Vrijders       <[email protected]>
- *    Francesco Salvestrini <[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.
- */
-
-#ifndef INSTANCE_NAME_H
-#define INSTANCE_NAME_H
-
-#include <stdint.h>
-#include <unistd.h>
-#include <stdbool.h>
-
-typedef struct {
-        char *   name;
-        uint16_t id;
-} instance_name_t;
-
-/*
- * Allocates a new name, returning the allocated object.
- * In case of an error, a NULL is returned.
- */
-instance_name_t * instance_name_create();
-
-/*
- * Initializes a previously dynamically allocated name (i.e. name_create())
- * or a statically one (e.g. declared into a struct not as a pointer).
- * Returns the passed object pointer in case everything is ok, a NULL
- * otherwise.
- *
- * A call to name_destroy() is allowed in case of error, in order to
- * release the associated resources.
- *
- * It is allowed to call name_init() over an already initialized object
- */
-instance_name_t * instance_name_init_from(instance_name_t * dst,
-                                          const char *      name,
-                                          uint16_t          api_id);
-
-/* Takes ownership of the passed parameters */
-instance_name_t * instance_name_init_with(instance_name_t * dst,
-                                          char *            name,
-                                          uint16_t          id);
-
-/*
- * Finalize a name object, releasing all the embedded resources (without
- * releasing the object itself). After name_fini() execution the passed
- * object will be in the same states as at the end of name_init().
- */
-void          instance_name_fini(instance_name_t * dst);
-
-/* Releases all the associated resources bound to a name object */
-void          instance_name_destroy(instance_name_t * ptr);
-
-/* Duplicates a name object, returning the pointer to the new object */
-instance_name_t * instance_name_dup(const instance_name_t * src);
-
-/*
- * Copies the source object contents into the destination object, both must
- * be previously allocated
- */
-int           instance_name_cpy(instance_name_t * dst,
-                                const instance_name_t * src);
-
-int           instance_name_cmp(const instance_name_t * a,
-                                const instance_name_t * b);
-
-bool          instance_name_is_valid(const instance_name_t * n);
-
-/* Returns a name as a (newly allocated) string */
-char *        instance_name_to_string(const instance_name_t * n);
-
-/* Inverse of name_tostring() */
-instance_name_t * string_to_instance_name(const char * s);
-
-#endif /* INSTANCE_NAME_H */
diff --git a/include/ouroboros/ipcp.h b/include/ouroboros/ipcp.h
index 0d62bd59..0c0afbe7 100644
--- a/include/ouroboros/ipcp.h
+++ b/include/ouroboros/ipcp.h
@@ -20,8 +20,7 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include <ouroboros/dif_config.h>
-#include <ouroboros/instance_name.h>
+#include <ouroboros/irm_config.h>
 #include <ouroboros/sockets.h>
 #include <ouroboros/common.h>
 
@@ -33,8 +32,7 @@
 struct ipcp;
 
 /* Returns the process id */
-pid_t ipcp_create(char *         ipcp_name,
-                  enum ipcp_type ipcp_type);
+pid_t ipcp_create(enum ipcp_type ipcp_type);
 
 int   ipcp_destroy(pid_t pid);
 
diff --git a/include/ouroboros/irm.h b/include/ouroboros/irm.h
index 743ed79c..9f27db05 100644
--- a/include/ouroboros/irm.h
+++ b/include/ouroboros/irm.h
@@ -1,7 +1,7 @@
 /*
  * Ouroboros - Copyright (C) 2016
  *
- * The API to instruct the IRM
+ * The API to instruct the IPC Resource Manager
  *
  *    Sander Vrijders <[email protected]>
  *
@@ -23,34 +23,40 @@
 #ifndef OUROBOROS_IRM_H
 #define OUROBOROS_IRM_H
 
-#include <ouroboros/instance_name.h>
-#include <ouroboros/dif_config.h>
-
+#include <ouroboros/irm_config.h>
 #include <sys/types.h>
 
-pid_t irm_create_ipcp(char *         ipcp_name,
-                      enum ipcp_type ipcp_type);
+pid_t   irm_create_ipcp(char *         name,
+                        enum ipcp_type ipcp_type);
+
+int     irm_destroy_ipcp(pid_t api);
+
+/* APIs is an out-parameter */
+ssize_t irm_list_ipcps(char *   name,
+                       pid_t ** apis);
+
+int     irm_enroll_ipcp(pid_t  api,
+                        char * dif_name);
 
-int irm_destroy_ipcp(instance_name_t * api);
+int     irm_bootstrap_ipcp(pid_t               api,
+                           struct dif_config * conf);
 
-int irm_enroll_ipcp(instance_name_t * api,
-                    char *            dif_name);
+int     irm_bind(char *   name,
+                 char *   ap_name,
+                 uint16_t opts,
+                 int      argc,
+                 char **  argv);
 
-int irm_bootstrap_ipcp(instance_name_t *   api,
-                       struct dif_config * conf);
+int     irm_unbind(char *   name,
+                   char *   ap_name,
+                   uint16_t opts);
 
-int irm_reg(char *            name,
-            instance_name_t * api,
-            int               argc,
-            char **           argv,
-            bool              autoexec,
-            char **           difs,
-            size_t            difs_size);
+int     irm_reg(char *  name,
+                char ** difs,
+                size_t  difs_size);
 
-int irm_unreg(char *                  name,
-              const instance_name_t * api,
-              char **                 difs,
-              size_t                  difs_size,
-              bool                    hard);
+int     irm_unreg(char *  name,
+                  char ** difs,
+                  size_t  difs_size);
 
 #endif /* OUROBOROS_IRM_H */
diff --git a/include/ouroboros/irm_config.h b/include/ouroboros/irm_config.h
new file mode 100644
index 00000000..d5f2b565
--- /dev/null
+++ b/include/ouroboros/irm_config.h
@@ -0,0 +1,73 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Configuration information for the IPC Resource Manager
+ *
+ *    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 <stdint.h>
+#include <unistd.h>
+
+#ifndef OUROBOROS_IRM_CONFIG_H
+#define OUROBOROS_IRM_CONFIG_H
+
+/* Name binding options */
+
+#define BIND_AP_AUTO   0x01
+#define BIND_AP_UNIQUE 0x02
+
+enum ipcp_type {
+        IPCP_NORMAL = 0,
+        IPCP_LOCAL,
+        IPCP_SHIM_UDP,
+        IPCP_SHIM_ETH_LLC
+};
+
+struct dif_config {
+        char * dif_name;
+        enum ipcp_type type;
+
+        union {
+                /* Normal DIF */
+                struct {
+                        uint8_t addr_size;
+                        uint8_t cep_id_size;
+                        uint8_t pdu_length_size;
+                        uint8_t qos_id_size;
+                        uint8_t seqno_size;
+
+                        /* DUP constants */
+                        uint8_t ttl_size;
+                        uint8_t chk_size;
+
+                        uint32_t min_pdu_size;
+                        uint32_t max_pdu_size;
+                };
+                /* Shim UDP */
+                struct {
+                        uint32_t ip_addr;
+                        uint32_t dns_addr;
+                };
+                /* Shim Ethernet LLC */
+                struct {
+                        char * if_name;
+                };
+        };
+};
+
+#endif /* OUROBOROS_IRM_CONFIG_H */