+/*
+ * 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);
+}
projects / trust_router.git / blobdiff