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) {
33 connection_t *c = handle;
34 meshlink_handle_t *mesh = c->mesh;
37 logger(mesh, MESHLINK_ERROR, "send_meta_sptps() called with NULL pointer!");
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) {
49 logger(mesh, MESHLINK_ERROR, "send_meta() called with NULL pointer!");
53 logger(mesh, MESHLINK_DEBUG, "Sending %d bytes of metadata to %s", length, c->name);
55 if(c->allow_request == ID) {
56 buffer_add(&c->outbuf, buffer, length);
57 io_set(&mesh->loop, &c->io, IO_READ | IO_WRITE);
61 return sptps_send_record(&c->sptps, 0, buffer, length);
64 void broadcast_meta(meshlink_handle_t *mesh, connection_t *from, const char *buffer, int length) {
65 for list_each(connection_t, c, mesh->connections)
66 if(c != from && c->status.active)
67 send_meta(mesh, c, buffer, length);
70 bool receive_meta_sptps(void *handle, uint8_t type, const void *data, uint16_t length) {
71 connection_t *c = handle;
72 meshlink_handle_t *mesh = c->mesh;
73 char *request = (char *)data;
76 logger(mesh, MESHLINK_ERROR, "receive_meta_sptps() called with NULL pointer!");
80 if(type == SPTPS_HANDSHAKE) {
81 if(c->allow_request == ACK)
82 return send_ack(mesh, c);
90 /* Are we receiving a TCPpacket? */
93 abort(); // TODO: get rid of tcplen altogether
96 /* Change newline to null byte, just like non-SPTPS requests */
98 if(request[length - 1] == '\n')
99 request[length - 1] = 0;
101 /* Otherwise we are waiting for a request */
103 return receive_request(mesh, c, request);
106 bool receive_meta(meshlink_handle_t *mesh, connection_t *c) {
108 char inbuf[MAXBUFSIZE];
110 inlen = recv(c->socket, inbuf, sizeof(inbuf), 0);
113 if(!inlen || !errno) {
114 logger(mesh, MESHLINK_INFO, "Connection closed by %s", c->name);
115 } else if(sockwouldblock(sockerrno))
118 logger(mesh, MESHLINK_ERROR, "Metadata socket read error for %s: %s", c->name, sockstrerror(sockerrno));
122 if(c->allow_request == ID) {
123 buffer_add(&c->inbuf, inbuf, inlen);
125 char *request = buffer_readline(&c->inbuf);
128 if(!receive_request(mesh, c, request) || c->allow_request == ID)
131 int left = c->inbuf.len - c->inbuf.offset;
133 fprintf(stderr, "GOT A LITTLE MORE\n");
134 return sptps_receive_data(&c->sptps, buffer_read(&c->inbuf, left), left);
139 if(c->inbuf.len >= sizeof(inbuf)) {
140 logger(mesh, MESHLINK_ERROR, "Input buffer full for %s", c->name);
146 return sptps_receive_data(&c->sptps, inbuf, inlen);