2 meta.c -- handle the meta communication
3 Copyright (C) 2014-2017 Guus Sliepen <guus@meshlink.io>,
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "connection.h"
24 #include "meshlink_internal.h"
31 bool send_meta_sptps(void *handle, uint8_t type, const void *buffer, size_t length) {
38 connection_t *c = handle;
39 meshlink_handle_t *mesh = c->mesh;
41 buffer_add(&c->outbuf, (const char *)buffer, length);
42 io_set(&mesh->loop, &c->io, IO_READ | IO_WRITE);
47 bool send_meta(meshlink_handle_t *mesh, connection_t *c, const char *buffer, int length) {
52 logger(mesh, MESHLINK_DEBUG, "Sending %d bytes of metadata to %s", length, c->name);
54 if(c->allow_request == ID) {
55 buffer_add(&c->outbuf, buffer, length);
56 io_set(&mesh->loop, &c->io, IO_READ | IO_WRITE);
60 return sptps_send_record(&c->sptps, 0, buffer, length);
63 void broadcast_meta(meshlink_handle_t *mesh, connection_t *from, const char *buffer, int length) {
68 if(mesh->connection != from && mesh->connection->status.active) {
69 send_meta(mesh, mesh->connection, buffer, length);
73 bool receive_meta_sptps(void *handle, uint8_t type, const void *data, uint16_t length) {
75 assert(!length || data);
77 connection_t *c = handle;
78 meshlink_handle_t *mesh = c->mesh;
79 char *request = (char *)data;
82 logger(mesh, MESHLINK_ERROR, "receive_meta_sptps() called with NULL pointer!");
86 if(type == SPTPS_HANDSHAKE) {
87 if(c->allow_request == ACK) {
88 return send_ack(mesh, c);
98 /* Are we receiving a raw packet? */
100 if(c->status.raw_packet) {
101 c->status.raw_packet = false;
103 if(mesh->receive_cb) {
104 mesh->receive_cb(mesh, (meshlink_node_t *)c->node, data, length);
110 /* Change newline to null byte, just like non-SPTPS requests */
112 if(request[length - 1] == '\n') {
113 request[length - 1] = 0;
116 /* Otherwise we are waiting for a request */
118 return receive_request(mesh, c, request);
121 bool receive_meta(meshlink_handle_t *mesh, connection_t *c) {
123 char inbuf[MAXBUFSIZE];
125 inlen = recv(c->socket, inbuf, sizeof(inbuf), 0);
128 if(!inlen || !errno) {
129 logger(mesh, MESHLINK_INFO, "Connection closed by %s", c->name);
130 } else if(sockwouldblock(sockerrno)) {
133 logger(mesh, MESHLINK_ERROR, "Metadata socket read error for %s: %s", c->name, sockstrerror(sockerrno));
139 logger(mesh, MESHLINK_DEBUG, "Received %d bytes of metadata from %s", inlen, c->name);
141 if(c->allow_request == ID) {
142 buffer_add(&c->inbuf, inbuf, inlen);
144 char *request = buffer_readline(&c->inbuf);
147 if(!receive_request(mesh, c, request) || c->allow_request == ID) {
151 int left = c->inbuf.len - c->inbuf.offset;
154 return sptps_receive_data(&c->sptps, buffer_read(&c->inbuf, left), left);
160 if(c->inbuf.len >= sizeof(inbuf)) {
161 logger(mesh, MESHLINK_ERROR, "Input buffer full for %s", c->name);
168 return sptps_receive_data(&c->sptps, inbuf, inlen);