WIP -- resolving, crafting packet.

7 files changed, 116 insertions, 40 deletions

diff --git a/lib/err.c b/lib/err.c
index 8ee76a6..b0f05c6 100644
--- a/lib/err.c
+++ b/lib/err.c
@@ -11,8 +11,8 @@ const char *_errtxt[] = {
   "invalid connection"		/* 4 RSE_INVALID_CONN */
   "connection type mismatch"	/* 5 RSE_CONN_TYPE_MISMATCH */
   "FreeRadius error"		/* 6 RSE_FR */
-  "ERR 7"			/*  RSE_ */
-  "ERR 8"			/*  RSE_ */
+  "bad hostname or port"	/* 7 RSE_BADADDR */
+  "no peer configured"		/* 8 RSE_NOPEER */
   "ERR 9"			/*  RSE_ */
   "ERR 10"			/*  RSE_ */
   "ERR 11"			/*  RSE_ */
diff --git a/lib/examples/Makefile b/lib/examples/Makefile
index ceb97f1..a9876da 100644
--- a/lib/examples/Makefile
+++ b/lib/examples/Makefile
@@ -6,7 +6,7 @@ blocking.o: blocking.c blocking.h ../libradsec-base.h ../libradsec.h
 	$(CC) $(CFLAGS) -c -I .. $^
 
 client: client.c ../libradsec.a ../libradsec.h ../libradsec-impl.h
-	$(CC) $(CFLAGS) -o $@ $< -L /usr/lib/freeradius -lfreeradius-radius -L .. -lradsec
+	$(CC) $(CFLAGS) -o $@ $< -L /usr/lib/freeradius -lfreeradius-radius -L .. -lradsec -L /usr/local/lib -levent
 
 clean:
-	-rm *.o
+	-rm *.o client
diff --git a/lib/examples/client.c b/lib/examples/client.c
index eab4390..a6b7999 100644
--- a/lib/examples/client.c
+++ b/lib/examples/client.c
@@ -55,8 +55,12 @@ int
 main (int argc, char *argv[])
 {
   struct rs_error *err;
+  char *host;
+  int port;
 
-  err = rsx_client (strsep (argv + 1, ":"), atoi (argv[1]));
+  host = strsep (argv + 1, ":");
+  port = atoi (argv[1]);
+  err = rsx_client (host, port);
   if (!err)
     return -1;
   fprintf (stderr, "%s\n", rs_err_msg (err, 0));
diff --git a/lib/libradsec-impl.h b/lib/libradsec-impl.h
index 170e90c..939cdd9 100644
--- a/lib/libradsec-impl.h
+++ b/lib/libradsec-impl.h
@@ -4,6 +4,7 @@
 /* See the file COPYING for licensing information.  */
 
 #include <freeradius/libradius.h>
+#include <event2/util.h>
 
 /* Constants.  */
 #define RS_HEADER_LEN 4
@@ -68,7 +69,8 @@ struct rs_handle {
 
 struct rs_peer {
     struct rs_connection *conn;
-    struct addrinfo *addr;
+    struct evutil_addrinfo *addr;
+    int s;			/* Socket.  */
     char *secret;
     int timeout;		/* client only */
     int tries;			/* client only */
@@ -80,7 +82,7 @@ struct rs_connection {
     enum rs_conn_type type;
     struct rs_credentials transport_credentials;
     struct rs_conn_callbacks callbacks;
-    struct rs_peer peers;
+    struct rs_peer *peers;
     struct rs_peer *active_peer;
     struct rs_error *err;
 };
diff --git a/lib/libradsec.h b/lib/libradsec.h
index a2560c7..255c0f5 100644
--- a/lib/libradsec.h
+++ b/lib/libradsec.h
@@ -12,6 +12,8 @@ enum rs_err_code {
     RSE_INVALID_CONN = 4,
     RSE_CONN_TYPE_MISMATCH = 5,
     RSE_FR = 6,
+    RSE_BADADDR = 7,
+    RSE_NOPEER = 8,
     RSE_SOME_ERROR = 21,
 };
 
@@ -44,9 +46,9 @@ int rs_context_set_alloc_scheme(struct rs_handle *ctx, struct rs_alloc_scheme *s
 int rs_context_config_read(struct rs_handle *ctx, const char *config_file);
 
 int rs_conn_create(struct rs_handle *ctx, struct rs_connection **conn);
-int rs_conn_add_server(struct rs_connection *conn, struct rs_peer **server, rs_conn_type_t type, const char *host, int port);
-int rs_conn_add_listener(struct rs_connection  *conn, rs_conn_type_t type, const char *host, int port);
-int rs_conn_destroy(struct rs_connection  *conn);
+int rs_conn_add_server(struct rs_connection *conn, struct rs_peer **server, rs_conn_type_t type, const char *hostname, int port);
+int rs_conn_add_listener(struct rs_connection  *conn, rs_conn_type_t type, const char *hostname, int port);
+void rs_conn_destroy(struct rs_connection  *conn);
 int rs_conn_set_eventbase(struct rs_connection *conn, struct event_base *eb);
 int rs_conn_set_callbacks(struct rs_connection *conn, struct rs_conn_callbacks *cb);
 int rs_conn_select_server(struct rs_connection *conn, const char *name);
@@ -70,22 +72,15 @@ void rs_attr_destroy(struct rs_attr *attr);
 int rs_packet_send(struct rs_connection *conn, const struct rs_packet *pkt, void *user_data);
 int rs_packet_recv(struct rs_connection *conn, struct rs_packet **pkt);
 
-
 int rs_ctx_err_push(struct rs_handle *ctx, int code, const char *fmt, ...);
 int rs_ctx_err_push_fl(struct rs_handle *ctx, int code, const char *file, int line, const char *fmt, ...);
 struct rs_error *rs_ctx_err_pop (struct rs_handle *ctx);
 int rs_conn_err_push(struct rs_connection *conn, int code, const char *fmt, ...);
 int rs_conn_err_push_fl(struct rs_connection *conn, int code, const char *file, int line, const char *fmt, ...);
 struct rs_error *rs_conn_err_pop (struct rs_connection *conn);
-void rs_err_free (struct rs_error *err);
-char *rs_err_msg (struct rs_error *err, int dofree_flag);
-int rs_err_code (struct rs_error *err, int dofree_flag);
-
-/* Local Variables: */
-/* c-file-style: "stroustrup" */
-/* End: */
-
-
+void rs_err_free(struct rs_error *err);
+char *rs_err_msg(struct rs_error *err, int dofree_flag);
+int rs_err_code(struct rs_error *err, int dofree_flag);
 
 /* Local Variables: */
 /* c-file-style: "stroustrup" */
diff --git a/lib/packet.c b/lib/packet.c
index 74ca391..eefb5eb 100644
--- a/lib/packet.c
+++ b/lib/packet.c
@@ -23,10 +23,11 @@ _packet_create (struct rs_connection *conn, struct rs_packet **pkt_out,
   rpkt->code = code;
 
   p = (struct rs_packet *) malloc (sizeof (struct rs_packet));
-  if (!p) {
-    rad_free (&rpkt);
-    return rs_conn_err_push (conn, RSE_NOMEM, __func__);
-  }
+  if (!p)
+    {
+      rad_free (&rpkt);
+      return rs_conn_err_push (conn, RSE_NOMEM, __func__);
+    }
   memset (p, 0, sizeof (struct rs_packet));
   p->rpkt = rpkt;
 
@@ -50,7 +51,7 @@ rs_packet_create_acc_request (struct rs_connection *conn,
     return -1;
   rs_packet_add_attr (pkt, attr);
 
-  if (rs_attr_create (conn, &attr, "User-Password", user_name))
+  if (rs_attr_create (conn, &attr, "User-Password", user_pw))
     return -1;
   /* FIXME: need this too? rad_pwencode(user_pw, &pwlen, SECRET, reqauth) */
   rs_packet_add_attr (pkt, attr);
@@ -72,7 +73,7 @@ rs_packet_send (struct rs_connection *conn, const struct rs_packet *pkt,
       }
   rad_encode (pkt->rpkt, NULL, conn->active_peer->secret);
 #if defined (DEBUG)
-  fprintf (stderr, "%s: about to send this to %s", __func__, "fixme");
+  fprintf (stderr, "%s: about to send this to %s:\n", __func__, "<fixme>");
   rs_dump_packet (pkt);
 #endif
 
diff --git a/lib/radsec.c b/lib/radsec.c
index 309c305..97f62e6 100644
--- a/lib/radsec.c
+++ b/lib/radsec.c
@@ -5,6 +5,7 @@
 #include <libgen.h>
 
 #include <freeradius/libradius.h>
+#include <event2/util.h>
 #include "libradsec.h"
 #include "libradsec-impl.h"
 
@@ -84,7 +85,6 @@ int rs_conn_create(struct rs_handle *ctx, struct rs_connection **conn)
     {
       memset (c, 0, sizeof(struct rs_connection));
       c->ctx = ctx;
-      c->peers.next = &c->peers;
     }
   if (conn)
     *conn = c;
@@ -92,30 +92,70 @@ int rs_conn_create(struct rs_handle *ctx, struct rs_connection **conn)
 }
 
 struct addrinfo *
-_resolv (const char *host, int port)
+_resolv (struct rs_connection *conn, const char *hostname, int port)
 {
-  return NULL;
+  int err;
+  char portstr[6];
+  struct evutil_addrinfo hints, *res = NULL;
+
+  snprintf (portstr, sizeof(portstr), "%d", port);
+  memset (&hints, 0, sizeof(struct evutil_addrinfo));
+  //hints.ai_family = AF_UNSPEC;	/* v4 or v6.  */
+  hints.ai_family = AF_INET;	/* FIXME: v4 only, while debuging */
+  hints.ai_flags = AI_ADDRCONFIG;
+  switch (conn->type)
+    {
+    case RS_CONN_TYPE_NONE:
+      rs_conn_err_push_fl (conn, RSE_INVALID_CONN, __FILE__, __LINE__, NULL);
+      return NULL;
+    case RS_CONN_TYPE_TCP:
+    case RS_CONN_TYPE_TLS:
+      hints.ai_socktype = SOCK_STREAM;
+      hints.ai_protocol = IPPROTO_TCP;
+      break;
+    case RS_CONN_TYPE_UDP:
+    case RS_CONN_TYPE_DTLS:
+      hints.ai_socktype = SOCK_DGRAM;
+      hints.ai_protocol = IPPROTO_UDP;
+      break;
+    }
+  err = evutil_getaddrinfo (hostname, portstr, &hints, &res);
+  if (err)
+    rs_conn_err_push_fl (conn, RSE_BADADDR, __FILE__, __LINE__,
+			 " %s:%d: bad host name or port (%s)",
+			 hostname, port, evutil_gai_strerror(err));
+  return res;			/* Simply use first result.  */
 }
 
-int rs_conn_add_server(struct rs_connection *conn, struct rs_peer **server, rs_conn_type_t type, const char *host, int port)
+int
+rs_conn_add_server(struct rs_connection *conn, struct rs_peer **server,
+		   rs_conn_type_t type, const char *hostname, int port)
 {
   struct rs_peer *srv;
+  struct evutil_addrinfo *addr;
 
   if (conn->type == RS_CONN_TYPE_NONE)
     conn->type = type;
   else if (conn->type != type)
     return rs_conn_err_push (conn, RSE_CONN_TYPE_MISMATCH, NULL);
 
+  addr = _resolv (conn, hostname, port);
+  if (!addr)
+    return -1;
+
   srv = (struct rs_peer *) malloc (sizeof(struct rs_peer));
   if (srv)
     {
       memset (srv, 0, sizeof(struct rs_peer));
       srv->conn = conn;
-      srv->addr = _resolv (host, port);
+      srv->addr = addr;
       srv->timeout = 10;
       srv->tries = 3;
-      srv->next = conn->peers.next;
-      conn->peers.next = srv;
+      srv->next = conn->peers;
+      if (conn->peers)
+	conn->peers->next = srv;
+      else
+	conn->peers = srv;
     }
   if (*server)
     *server = srv;
@@ -141,16 +181,27 @@ int rs_server_set_secret(struct rs_peer *server, const char *secret)
   return RSE_OK;
 }
 
-int rs_conn_add_listener(struct rs_connection *conn, rs_conn_type_t type, const char *host, int port)
+int rs_conn_add_listener(struct rs_connection *conn, rs_conn_type_t type, const char *hostname, int port)
 {
   return rs_conn_err_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__,
 			      "%s: NYI", __func__);
 }
 
-int rs_conn_destroy(struct rs_connection  *conn)
+
+void
+rs_conn_destroy(struct rs_connection *conn)
 {
-  return rs_conn_err_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__,
-			      "%s: NYI", __func__);
+  struct rs_peer *p;
+
+#warning "TODO: Disconnect active_peer."
+
+  for (p = conn->peers; p; p = p->next)
+    {
+      if (p->addr)
+	evutil_freeaddrinfo (p->addr);
+      if (p->secret)
+	rs_free (conn->ctx, p->secret);
+    }
 }
 
 int rs_conn_set_eventbase(struct rs_connection *conn, struct event_base *eb)
@@ -177,8 +228,31 @@ int rs_conn_get_current_server(struct rs_connection *conn, const char *name, siz
 			      "%s: NYI", __func__);
 }
 
-int rs_conn_open(struct rs_connection *conn)
+/* Non-public.  */
+int
+rs_conn_open(struct rs_connection *conn)
 {
-  return rs_conn_err_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__,
-			      "%s: NYI", __func__);
+  int s;
+  struct rs_peer *p;
+
+  if (conn->active_peer)
+    return RSE_OK;
+  p = conn->peers;
+  if (!p)
+    return rs_conn_err_push_fl (conn, RSE_NOPEER, __FILE__, __LINE__, NULL);
+
+  s = socket (p->addr->ai_family, p->addr->ai_socktype, p->addr->ai_protocol);
+  if (s < 0)
+    return rs_conn_err_push_fl (conn, RSE_SOME_ERROR, __FILE__, __LINE__,
+				strerror (errno));
+  if (connect (s, p->addr->ai_addr, p->addr->ai_addrlen))
+    {
+      /* TODO: handle nonblocking sockets (EINTR, EAGAIN).  */
+      EVUTIL_CLOSESOCKET (s);
+      return rs_conn_err_push_fl (conn, RSE_SOME_ERROR, __FILE__, __LINE__,
+				  strerror (errno));
+    }
+  p->s = s;
+  conn->active_peer = p;
+  return RSE_OK;
 }