X-Git-Url: http://www.project-moonshot.org/gitweb/?p=trust_router.git;a=blobdiff_plain;f=trp%2Ftrp_peer.c;fp=trp%2Ftrp_peer.c;h=34d4296caef7543aa68f62129af008bc4c3be96c;hp=0000000000000000000000000000000000000000;hb=6f65c9cce86719147d0b4dcc9823b25443c2d185;hpb=eaa1a8ceed54fbfadc2638cf383aaa12ab446a57

diff --git a/trp/trp_peer.c b/trp/trp_peer.c
new file mode 100644
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--- /dev/null
+++ b/trp/trp_peer.c
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+/*
+ * Copyright (c) 2016-2018, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <time.h>
+#include <talloc.h>
+
+#include <tr_name_internal.h>
+#include <trp_internal.h>
+#include <tr_gss_names.h>
+#include <trp_ptable.h>
+#include <tr_debug.h>
+#include <trp_peer.h>
+
+static int trp_peer_destructor(void *object)
+{
+  TRP_PEER *peer=talloc_get_type_abort(object, TRP_PEER);
+  if (peer->label!=NULL)
+    tr_free_name(peer->label);
+  if (peer->servicename!=NULL)
+    tr_free_name(peer->servicename);
+  return 0;
+}
+TRP_PEER *trp_peer_new(TALLOC_CTX *memctx)
+{
+  TRP_PEER *peer=talloc(memctx, TRP_PEER);
+  if (peer!=NULL) {
+    peer->next=NULL;
+    peer->label=NULL;
+    peer->server=NULL;
+    peer->servicename=NULL;
+    peer->gss_names=NULL;
+    peer->port=0;
+    peer->linkcost=TRP_LINKCOST_DEFAULT;
+    peer->last_conn_attempt=(struct timespec){0,0};
+    peer->outgoing_status=PEER_DISCONNECTED;
+    peer->incoming_status=PEER_DISCONNECTED;
+    peer->conn_status_cb=NULL;
+    peer->conn_status_cookie=NULL;
+    peer->filters=NULL;
+    talloc_set_destructor((void *)peer, trp_peer_destructor);
+  }
+  return peer;
+}
+
+void trp_peer_free(TRP_PEER *peer)
+{
+  talloc_free(peer);
+}
+
+TRP_PEER *trp_peer_tail(TRP_PEER *peer)
+{
+  while (peer->next!=NULL) {
+    peer=peer->next;
+  }
+  return peer;
+}
+
+
+/* Get a name that identifies this peer for display to the user, etc.
+ * Do not modify or free the label. */
+TR_NAME *trp_peer_get_label(TRP_PEER *peer)
+{
+  char *s=NULL;
+
+  if (peer->label==NULL) {
+    s=talloc_asprintf(NULL, "%s:%u", peer->server, peer->port);
+    if (s!=NULL) {
+      peer->label=tr_new_name(s);
+      talloc_free(s);
+    }
+  }
+  return peer->label;
+}
+
+/* Get a name that identifies this peer for display to the user, etc.
+ * Makes a copy, caller is responsible for freeing.  */
+TR_NAME *trp_peer_dup_label(TRP_PEER *peer)
+{
+  return tr_dup_name(trp_peer_get_label(peer));;
+}
+
+char *trp_peer_get_server(TRP_PEER *peer)
+{
+  return peer->server;
+}
+
+static void trp_peer_set_servicename(TRP_PEER *peer, const char *server)
+{
+  char *name=NULL;
+  if (peer->servicename !=NULL)
+    tr_free_name(peer->servicename);
+
+  if (server!=NULL)
+    name=talloc_asprintf(NULL, "trustrouter/%s", server);
+
+  if (name!=NULL) {
+    peer->servicename=tr_new_name(name);
+    talloc_free(name);
+  } else {
+    peer->servicename=NULL;
+  }
+}
+
+/* copies input; on error, peer->servicename will be null */
+void trp_peer_set_server(TRP_PEER *peer, const char *server)
+{
+  peer->server=talloc_strdup(peer, server); /* will be null on error */
+  trp_peer_set_servicename(peer, server);
+}
+
+void trp_peer_add_gss_name(TRP_PEER *peer, TR_NAME *gss_name)
+{
+  if (peer->gss_names==NULL)
+    trp_peer_set_gss_names(peer, tr_gss_names_new(peer));
+  tr_gss_names_add(peer->gss_names, gss_name);
+}
+
+void trp_peer_set_gss_names(TRP_PEER *peer, TR_GSS_NAMES *gss_names)
+{
+  if (peer->gss_names!=NULL)
+    tr_gss_names_free(peer->gss_names);
+
+  peer->gss_names=gss_names;
+  talloc_steal(peer, gss_names);
+}
+
+/* get the peer gss_names, caller must not free the result */
+TR_GSS_NAMES *trp_peer_get_gss_names(TRP_PEER *peer)
+{
+  return peer->gss_names;
+}
+
+/* get the service name (i.e., gssname we see when we connect to this peer) */
+TR_NAME *trp_peer_get_servicename(TRP_PEER *peer)
+{
+  return peer->servicename;
+}
+
+/* get a copy of the servicename, caller must free via tr_free_name */
+TR_NAME *trp_peer_dup_servicename(TRP_PEER *peer)
+{
+  return tr_dup_name(peer->servicename);
+}
+
+int trp_peer_get_port(TRP_PEER *peer)
+{
+  return peer->port;
+}
+
+void trp_peer_set_port(TRP_PEER *peer, int port)
+{
+  peer->port=port;
+}
+
+unsigned int trp_peer_get_linkcost(TRP_PEER *peer)
+{
+  if (peer!=NULL)
+    return peer->linkcost;
+  else
+    return 1;
+}
+
+void trp_peer_set_linkcost(TRP_PEER *peer, unsigned int linkcost)
+{
+  if ((linkcost>TRP_METRIC_INFINITY) && (linkcost!=TRP_METRIC_INVALID)) {
+    /* This indicates a programming error, but probably means an already infinite metric
+     * was (incorrectly) incremented. Issue a warning and proceed with an infinite metric. */
+    tr_warning("trp_peer_set_linkcost: link cost > infinity encountered, setting to infinity");
+    linkcost=TRP_METRIC_INFINITY;
+  }
+  peer->linkcost=linkcost;
+}
+
+void trp_peer_set_conn_status_cb(TRP_PEER *peer, void (*cb)(TRP_PEER *, void *), void *cookie)
+{
+  peer->conn_status_cb=cb;
+  peer->conn_status_cookie=cookie;
+}
+
+/**
+ * Set the filter associated with this peer. Any existing filter will be freed. Takes responsibility for
+ * freeing the new filter.
+ *
+ * @param peer Peer to modify
+ * @param filts New filter to attach to the peer
+ */
+void trp_peer_set_filters(TRP_PEER *peer, TR_FILTER_SET *filts)
+{
+  if (peer->filters!=NULL)
+    tr_filter_set_free(peer->filters);
+
+  peer->filters=filts;
+  talloc_steal(peer, filts);
+}
+
+TR_FILTER *trp_peer_get_filter(TRP_PEER *peer, TR_FILTER_TYPE ftype)
+{
+  return tr_filter_set_get(peer->filters, ftype);
+}
+
+struct timespec *trp_peer_get_last_conn_attempt(TRP_PEER *peer)
+{
+  return &(peer->last_conn_attempt);
+}
+
+void trp_peer_set_last_conn_attempt(TRP_PEER *peer, struct timespec *time)
+{
+  peer->last_conn_attempt=*time;
+}
+
+void trp_peer_set_outgoing_status(TRP_PEER *peer, TRP_PEER_CONN_STATUS status)
+{
+  TR_NAME *peer_label=trp_peer_get_label(peer);
+  int was_connected=trp_peer_is_connected(peer);
+  peer->outgoing_status=status;
+  tr_debug("trp_peer_set_outgoing_status: %s: status=%d peer connected was %d now %d.",
+           peer_label->buf, status, was_connected, trp_peer_is_connected(peer));
+  if ((trp_peer_is_connected(peer) != was_connected) && (peer->conn_status_cb!=NULL))
+    peer->conn_status_cb(peer, peer->conn_status_cookie);
+}
+
+TRP_PEER_CONN_STATUS trp_peer_get_outgoing_status(TRP_PEER *peer)
+{
+  return peer->outgoing_status;
+}
+
+void trp_peer_set_incoming_status(TRP_PEER *peer, TRP_PEER_CONN_STATUS status)
+{
+  TR_NAME *peer_label=trp_peer_get_label(peer);
+  int was_connected=trp_peer_is_connected(peer);
+  peer->incoming_status=status;
+  tr_debug("trp_peer_set_incoming_status: %s: status=%d peer connected was %d now %d.",
+           peer_label->buf, status, was_connected, trp_peer_is_connected(peer));
+  if ((trp_peer_is_connected(peer) != was_connected) && (peer->conn_status_cb!=NULL))
+    peer->conn_status_cb(peer, peer->conn_status_cookie);
+}
+
+TRP_PEER_CONN_STATUS trp_peer_get_incoming_status(TRP_PEER *peer)
+{
+  return peer->incoming_status;
+}
+
+int trp_peer_is_connected(TRP_PEER *peer)
+{
+  return (peer->outgoing_status==PEER_CONNECTED) && (peer->incoming_status==PEER_CONNECTED);
+}