irmd: Add configuration file support

This adds initial support for configuration files using the C99 TOML
parser (to be installed separately from https://github.com/cktan/tomlc99).

The default location for the IRMd configuration file is
/etc/ouroboros/irmd.conf. This is configurable at build time.
An example file will be installed in the configuration directory with
the name irmd.conf.example.

Config file support can be disabled using the DISABLE_CONFIGFILE build
option.

There were some refactors and changes to the configuration messages
and protobuf files. This works towards consolidation of protobuf C as
an option for more generic handling of serialization/deserialization
of various messages.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 10 insertions, 53 deletions

diff --git a/src/lib/irm.c b/src/lib/irm.c
index 2a8aa05c..75071260 100644
--- a/src/lib/irm.c
+++ b/src/lib/irm.c
@@ -31,6 +31,7 @@
 #include <ouroboros/irm.h>
 #include <ouroboros/utils.h>
 #include <ouroboros/sockets.h>
+#include <ouroboros/protobuf.h>
 
 #include <stdbool.h>
 #include <string.h>
@@ -98,15 +99,9 @@ int irm_destroy_ipcp(pid_t pid)
 int irm_bootstrap_ipcp(pid_t                      pid,
                        const struct ipcp_config * conf)
 {
-        irm_msg_t         msg            = IRM_MSG__INIT;
-        ipcp_config_msg_t cfg_msg        = IPCP_CONFIG_MSG__INIT;
-        layer_info_msg_t  layer_info_msg = LAYER_INFO_MSG__INIT;
-        dt_config_msg_t   dt_cfg_msg     = DT_CONFIG_MSG__INIT;
-        uni_config_msg_t  uni_cfg_msg    = UNI_CONFIG_MSG__INIT;
-        eth_config_msg_t  eth_cfg_msg    = ETH_CONFIG_MSG__INIT;
-        udp_config_msg_t  udp_cfg_msg    = UDP_CONFIG_MSG__INIT;
-        irm_msg_t *       recv_msg       = NULL;
-        int               ret            = -1;
+        irm_msg_t   msg = IRM_MSG__INIT;
+        irm_msg_t * recv_msg;
+        int         ret;
 
         if (pid == -1 || conf == NULL)
                 return -EINVAL;
@@ -114,48 +109,10 @@ int irm_bootstrap_ipcp(pid_t                      pid,
         msg.code    = IRM_MSG_CODE__IRM_BOOTSTRAP_IPCP;
         msg.has_pid = true;
         msg.pid     = pid;
-
-        cfg_msg.ipcp_type = conf->type;
-        layer_info_msg.layer_name = (char *) conf->layer_info.layer_name;
-        layer_info_msg.dir_hash_algo  = conf->layer_info.dir_hash_algo;
-
-        switch (conf->type) {
-        case IPCP_UNICAST:
-                dt_cfg_msg.addr_size       = conf->unicast.dt.addr_size;
-                dt_cfg_msg.eid_size        = conf->unicast.dt.eid_size;
-                dt_cfg_msg.max_ttl         = conf->unicast.dt.max_ttl;
-                dt_cfg_msg.routing_type    = conf->unicast.dt.routing_type;
-                uni_cfg_msg.dt             = &dt_cfg_msg;
-                uni_cfg_msg.addr_auth_type = conf->unicast.addr_auth_type;
-                uni_cfg_msg.cong_avoid     = conf->unicast.cong_avoid;
-                cfg_msg.unicast            = &uni_cfg_msg;
-                break;
-        case IPCP_UDP:
-                udp_cfg_msg.ip_addr  = conf->udp.ip_addr;
-                udp_cfg_msg.dns_addr = conf->udp.dns_addr;
-                udp_cfg_msg.port     = conf->udp.port;
-                cfg_msg.udp          = &udp_cfg_msg;
-                break;
-        case IPCP_LOCAL:
-                /* FALLTHRU */
-        case IPCP_BROADCAST:
-                break;
-        case IPCP_ETH_DIX:
-                eth_cfg_msg.has_ethertype = true;
-                eth_cfg_msg.ethertype     = conf->eth.ethertype;
-                /* FALLTHRU */
-        case IPCP_ETH_LLC:
-                eth_cfg_msg.dev = conf->eth.dev;
-                cfg_msg.eth = &eth_cfg_msg;
-                break;
-        default:
-                return -EIPCPTYPE;
-        }
-
-        cfg_msg.layer_info = &layer_info_msg;
-        msg.conf           = &cfg_msg;
+        msg.conf    = ipcp_config_s_to_msg(conf);
 
         recv_msg = send_recv_irm_msg(&msg);
+        ipcp_config_msg__free_unpacked(msg.conf, NULL);
         if (recv_msg == NULL)
                 return -EIRMD;
 
@@ -175,8 +132,7 @@ int irm_connect_ipcp(pid_t        pid,
                      const char * component,
                      qosspec_t    qs)
 {
-        irm_msg_t     msg    = IRM_MSG__INIT;
-        qosspec_msg_t qs_msg = QOSSPEC_MSG__INIT;
+        irm_msg_t     msg = IRM_MSG__INIT;
         irm_msg_t *   recv_msg;
         int           ret;
 
@@ -186,10 +142,11 @@ int irm_connect_ipcp(pid_t        pid,
         msg.comp      = (char *) component;
         msg.has_pid   = true;
         msg.pid       = pid;
-        qs_msg        = spec_to_msg(&qs);
-        msg.qosspec   = &qs_msg;
+        msg.qosspec   = qos_spec_s_to_msg(&qs);
 
         recv_msg = send_recv_irm_msg(&msg);
+        qosspec_msg__free_unpacked(msg.qosspec, NULL);
+
         if (recv_msg == NULL)
                 return -EIRMD;