2 meta.c -- handle the meta communication
3 Copyright (C) 2014 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) {
32 connection_t *c = handle;
33 meshlink_handle_t *mesh = c->mesh;
36 logger(mesh, MESHLINK_ERROR, "send_meta_sptps() called with NULL pointer!");
40 buffer_add(&c->outbuf, (const char *)buffer, length);
41 io_set(&mesh->loop, &c->io, IO_READ | IO_WRITE);
46 bool send_meta(meshlink_handle_t *mesh, connection_t *c, const char *buffer, int length) {
48 logger(mesh, MESHLINK_ERROR, "send_meta() called with NULL pointer!");
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) {
64 for list_each(connection_t, c, mesh->connections)
65 if(c != from && c->status.active)
66 send_meta(mesh, c, buffer, length);
69 bool receive_meta_sptps(void *handle, uint8_t type, const void *data, uint16_t length) {
70 connection_t *c = handle;
71 meshlink_handle_t *mesh = c->mesh;
72 char *request = (char *)data;
75 logger(mesh, MESHLINK_ERROR, "receive_meta_sptps() called with NULL pointer!");
79 if(type == SPTPS_HANDSHAKE) {
80 if(c->allow_request == ACK)
81 return send_ack(mesh, c);
89 /* Are we receiving a TCPpacket? */
92 if(length != c->tcplen)
94 receive_tcppacket(mesh, c, request, length);
99 /* Change newline to null byte, just like non-SPTPS requests */
101 if(request[length - 1] == '\n')
102 request[length - 1] = 0;
104 /* Otherwise we are waiting for a request */
106 return receive_request(mesh, c, request);
109 bool receive_meta(meshlink_handle_t *mesh, connection_t *c) {
111 char inbuf[MAXBUFSIZE];
113 inlen = recv(c->socket, inbuf, sizeof(inbuf), 0);
116 if(!inlen || !errno) {
117 logger(mesh, MESHLINK_INFO, "Connection closed by %s", c->name);
118 } else if(sockwouldblock(sockerrno))
121 logger(mesh, MESHLINK_ERROR, "Metadata socket read error for %s: %s", c->name, sockstrerror(sockerrno));
125 if(c->allow_request == ID) {
126 buffer_add(&c->inbuf, inbuf, inlen);
128 char *request = buffer_readline(&c->inbuf);
131 if(!receive_request(mesh, c, request) || c->allow_request == ID)
134 int left = c->inbuf.len - c->inbuf.offset;
136 fprintf(stderr, "GOT A LITTLE MORE\n");
137 return sptps_receive_data(&c->sptps, buffer_read(&c->inbuf, left), left);
142 if(c->inbuf.len >= sizeof(inbuf)) {
143 logger(mesh, MESHLINK_ERROR, "Input buffer full for %s", c->name);
149 return sptps_receive_data(&c->sptps, inbuf, inlen);