1022 lines
31 KiB
C
1022 lines
31 KiB
C
/* $Id: miniupnpc-libevent.c,v 1.27 2015/07/22 13:51:09 nanard Exp $ */
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/* miniupnpc-libevent
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* Copyright (c) 2008-2014, Thomas BERNARD <miniupnp@free.fr>
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* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <stdio.h>
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#include <event2/event.h>
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#include <event2/buffer.h>
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/*#include <event2/bufferevent.h>*/
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#include <event2/http.h>
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#ifdef _WIN32
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <io.h>
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#define PRINT_SOCKET_ERROR printf
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#define SOCKET_ERROR GetWSALastError()
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#define WOULDBLOCK(err) (err == WSAEWOULDBLOCK)
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#else /* _WIN32 */
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#include <unistd.h>
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#include <errno.h>
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#define closesocket close
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#define PRINT_SOCKET_ERROR perror
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#define SOCKET_ERROR errno
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#define WOULDBLOCK(err) (err == EAGAIN || err == EWOULDBLOCK)
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#endif /* _WIN32 */
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#include "miniupnpc-libevent.h"
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#include "minixml.h"
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#include "igd_desc_parse.h"
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#include "upnpreplyparse.h"
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#ifndef MIN
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#define MIN(x,y) (((x)<(y))?(x):(y))
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#endif /* MIN */
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 64
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#endif /* MAXHOSTNAMELEN */
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#define SSDP_PORT 1900
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#define SSDP_MCAST_ADDR "239.255.255.250"
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#define XSTR(s) STR(s)
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#define STR(s) #s
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#ifdef DEBUG
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#define debug_printf(...) fprintf(stderr, __VA_ARGS__)
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#else
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#define debug_printf(...) (void)0
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#endif
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/* compare the begining of a string with a constant string */
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#define COMPARE(str, cstr) (0==memcmp(str, cstr, sizeof(cstr) - 1))
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/* stuctures */
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struct upnp_args {
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const char * elt;
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const char * val;
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};
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/* private functions */
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static int upnpc_get_desc(upnpc_device_t * p, const char * url);
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static char * build_url_string(const char * urlbase, const char * root_desc_url, const char * controlurl);
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/* data */
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static const char * devices_to_search[] = {
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"urn:schemas-upnp-org:device:InternetGatewayDevice:1",
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"urn:schemas-upnp-org:service:WANIPConnection:1",
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"urn:schemas-upnp-org:service:WANPPPConnection:1",
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"upnp:rootdevice",
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0
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};
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#ifdef DEBUG
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static void upnpc_conn_close_cb(struct evhttp_connection * conn, void * data)
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{
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upnpc_device_t * d = (upnpc_device_t *)data;
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debug_printf("%s %p %p\n", __func__, conn, d);
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}
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#endif /* DEBUG */
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/* parse_msearch_reply()
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* the last 4 arguments are filled during the parsing :
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* - location/locationsize : "location:" field of the SSDP reply packet
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* - st/stsize : "st:" field of the SSDP reply packet.
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* The strings are NOT null terminated */
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static void
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parse_msearch_reply(const char * reply, int size,
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const char * * location, int * locationsize,
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const char * * st, int * stsize)
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{
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int a, b, i;
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i = 0; /* current character index */
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a = i; /* start of the line */
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b = 0; /* end of the "header" (position of the colon) */
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while(i<size) {
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switch(reply[i]) {
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case ':':
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if(b==0) {
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b = i; /* end of the "header" */
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}
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break;
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case '\x0a':
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case '\x0d':
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if(b!=0) {
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/* skip the colon and white spaces */
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do { b++; } while(reply[b]==' ' && b<i);
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if(0==strncasecmp(reply+a, "location", 8)) {
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*location = reply+b;
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*locationsize = i-b;
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} else if(0==strncasecmp(reply+a, "st", 2)) {
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*st = reply+b;
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*stsize = i-b;
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}
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b = 0;
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}
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a = i+1;
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break;
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default:
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break;
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}
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i++;
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}
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}
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static void upnpc_send_ssdp_msearch(evutil_socket_t s, short events, upnpc_t * p)
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{
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/* envoyer les packets de M-SEARCH discovery sur le socket ssdp */
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int n;
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char bufr[1024];
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struct sockaddr_in addr;
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unsigned int mx = 2;
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static const char MSearchMsgFmt[] =
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"M-SEARCH * HTTP/1.1\r\n"
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"HOST: " SSDP_MCAST_ADDR ":" XSTR(SSDP_PORT) "\r\n"
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"ST: %s\r\n"
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"MAN: \"ssdp:discover\"\r\n"
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"MX: %u\r\n"
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"\r\n";
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(void)p;
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(void)events;
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memset(&addr, 0, sizeof(struct sockaddr_in));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(SSDP_PORT);
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addr.sin_addr.s_addr = inet_addr(SSDP_MCAST_ADDR);
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n = snprintf(bufr, sizeof(bufr),
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MSearchMsgFmt, devices_to_search[p->discover_device_index++], mx);
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debug_printf("%s: %s", __func__, bufr);
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n = sendto(s, bufr, n, 0,
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(struct sockaddr *)&addr, sizeof(struct sockaddr_in));
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if (n < 0) {
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PRINT_SOCKET_ERROR("sendto");
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}
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}
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static int upnpc_set_root_desc_location(upnpc_device_t * d, const char * location, int locationsize)
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{
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char * tmp;
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tmp = realloc(d->root_desc_location, locationsize + 1);
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if(tmp == NULL) {
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return -1;
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}
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memcpy(tmp, location, locationsize);
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tmp[locationsize] = '\0';
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d->root_desc_location = tmp;
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return 0;
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}
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static upnpc_device_t * upnpc_find_device_with_location(upnpc_t * p, const char * location, int locationsize)
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{
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upnpc_device_t * d;
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for(d = p->devices; d != NULL; d = d->next) {
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if(d->root_desc_location
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&& ((int)strlen(d->root_desc_location) == locationsize)
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&& (0 == memcmp(location, d->root_desc_location, locationsize)))
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return d;
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}
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return NULL;
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}
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static void upnpc_receive_and_parse_ssdp(evutil_socket_t s, short events, upnpc_t * p)
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{
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char bufr[2048];
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ssize_t len;
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if(events == EV_TIMEOUT) {
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/* nothing received ... */
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debug_printf("%s() TIMEOUT\n", __func__);
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if(!devices_to_search[p->discover_device_index]) {
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debug_printf("*** NO MORE DEVICES TO SEARCH ***\n");
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event_del(p->ev_ssdp_recv);
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/* no device found : report error */
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p->ready_cb(UPNPC_ERR_NO_DEVICE_FOUND, p, NULL, p->cb_data);
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} else {
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/* send another SSDP M-SEARCH packet */
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if(event_add(p->ev_ssdp_writable, NULL)) {
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debug_printf("event_add FAILED\n");
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}
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}
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return;
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}
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len = recv(s, bufr, sizeof(bufr), 0);
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debug_printf("input %d bytes\n", (int)len);
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if(len < 0) {
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PRINT_SOCKET_ERROR("recv");
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} else if(len == 0) {
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debug_printf("SSDP socket closed ?\n");
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} else {
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const char * location = NULL;
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int locationsize = 0;
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const char * st = NULL;
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int stsize = 0;
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debug_printf("%.*s", (int)len, bufr);
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parse_msearch_reply(bufr, len, &location, &locationsize, &st, &stsize);
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debug_printf("location = '%.*s'\n", locationsize, location);
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debug_printf("st = '%.*s'\n", stsize, st);
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if(location != NULL) {
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upnpc_device_t * device;
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device = upnpc_find_device_with_location(p, location, locationsize);
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if(device) {
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debug_printf("device already known\n");
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} else {
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device = malloc(sizeof(upnpc_device_t));
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memset(device, 0, sizeof(upnpc_device_t));
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device->parent = p;
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device->next = p->devices;
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p->devices = device;
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if(upnpc_set_root_desc_location(device, location, locationsize) < 0) {
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return;
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}
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upnpc_get_desc(device, device->root_desc_location);
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}
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#if 0
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event_del(p->ev_ssdp_recv); /* stop receiving SSDP responses */
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#endif
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} else {
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/* or do nothing ? */
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debug_printf("no location\n");
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}
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}
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}
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static int
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parseURL(const char * url,
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char * hostname, unsigned short * port,
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char * * path, unsigned int * scope_id)
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{
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char * p1, *p2, *p3;
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if(!url)
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return 0;
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p1 = strstr(url, "://");
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if(!p1)
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return 0;
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p1 += 3;
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if( (url[0]!='h') || (url[1]!='t')
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||(url[2]!='t') || (url[3]!='p'))
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return 0;
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memset(hostname, 0, MAXHOSTNAMELEN + 1);
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if(*p1 == '[') {
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/* IP v6 : http://[2a00:1450:8002::6a]/path/abc */
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char * scope;
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scope = strchr(p1, '%');
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p2 = strchr(p1, ']');
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if(p2 && scope && scope < p2 && scope_id) {
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/* parse scope */
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#ifdef IF_NAMESIZE
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char tmp[IF_NAMESIZE];
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int l;
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scope++;
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/* "%25" is just '%' in URL encoding */
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if(scope[0] == '2' && scope[1] == '5')
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scope += 2; /* skip "25" */
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l = p2 - scope;
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if(l >= IF_NAMESIZE)
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l = IF_NAMESIZE - 1;
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memcpy(tmp, scope, l);
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tmp[l] = '\0';
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*scope_id = if_nametoindex(tmp);
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if(*scope_id == 0) {
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*scope_id = (unsigned int)strtoul(tmp, NULL, 10);
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}
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#else /* IF_NAMESIZE */
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/* under windows, scope is numerical */
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char tmp[8];
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int l;
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scope++;
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/* "%25" is just '%' in URL encoding */
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if(scope[0] == '2' && scope[1] == '5')
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scope += 2; /* skip "25" */
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l = p2 - scope;
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if(l >= (int)sizeof(tmp))
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l = sizeof(tmp) - 1;
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memcpy(tmp, scope, l);
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tmp[l] = '\0';
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*scope_id = (unsigned int)strtoul(tmp, NULL, 10);
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#endif /* IF_NAMESIZE */
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}
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p3 = strchr(p1, '/');
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if(p2 && p3) {
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p2++;
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strncpy(hostname, p1, MIN(MAXHOSTNAMELEN, (int)(p2-p1)));
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if(*p2 == ':') {
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*port = 0;
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p2++;
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while( (*p2 >= '0') && (*p2 <= '9')) {
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*port *= 10;
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*port += (unsigned short)(*p2 - '0');
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p2++;
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}
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} else {
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*port = 80;
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}
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*path = p3;
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return 1;
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}
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}
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p2 = strchr(p1, ':');
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p3 = strchr(p1, '/');
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if(!p3)
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return 0;
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if(!p2 || (p2>p3)) {
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strncpy(hostname, p1, MIN(MAXHOSTNAMELEN, (int)(p3-p1)));
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*port = 80;
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} else {
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strncpy(hostname, p1, MIN(MAXHOSTNAMELEN, (int)(p2-p1)));
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*port = 0;
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p2++;
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while( (*p2 >= '0') && (*p2 <= '9')) {
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*port *= 10;
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*port += (unsigned short)(*p2 - '0');
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p2++;
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}
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}
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*path = p3;
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return 1;
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}
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static void upnpc_desc_received(struct evhttp_request * req, void * pvoid)
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{
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size_t len;
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unsigned char * data;
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struct evbuffer * input_buffer;
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struct IGDdatas igd;
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struct xmlparser parser;
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upnpc_device_t * d = (upnpc_device_t *)pvoid;
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if(req == NULL) {
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debug_printf("%s(%p, %p) NULL argument !\n", __func__, req, pvoid);
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return;
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}
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input_buffer = evhttp_request_get_input_buffer(req);
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len = evbuffer_get_length(input_buffer);
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data = evbuffer_pullup(input_buffer, len);
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debug_printf("%s %d (%d bytes)\n", __func__, evhttp_request_get_response_code(req), (int)len);
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if(evhttp_request_get_response_code(req) != HTTP_OK) {
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d->parent->ready_cb(evhttp_request_get_response_code(req), d->parent, d, d->parent->cb_data);
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return;
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}
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if(data == NULL) {
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d->parent->ready_cb(UPNPC_ERR_ROOT_DESC_ERROR, d->parent, d, d->parent->cb_data);
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return;
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}
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debug_printf("%.*s\n", (int)len, (char *)data);
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memset(&igd, 0, sizeof(struct IGDdatas));
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memset(&parser, 0, sizeof(struct xmlparser));
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parser.xmlstart = (char *)data;
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parser.xmlsize = len;
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parser.data = &igd;
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parser.starteltfunc = IGDstartelt;
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parser.endeltfunc = IGDendelt;
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parser.datafunc = IGDdata;
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parsexml(&parser);
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#ifdef DEBUG
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printIGD(&igd);
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#endif /* DEBUG */
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d->control_conn_url = build_url_string(igd.urlbase, d->root_desc_location, igd.first.controlurl);
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d->event_conn_url = build_url_string(igd.urlbase, d->root_desc_location, igd.first.eventsuburl);
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d->conn_service_type = strdup(igd.first.servicetype);
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d->control_cif_url = build_url_string(igd.urlbase, d->root_desc_location, igd.CIF.controlurl);
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d->event_cif_url = build_url_string(igd.urlbase, d->root_desc_location, igd.CIF.eventsuburl);
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d->cif_service_type = strdup(igd.CIF.servicetype);
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debug_printf("control_conn_url='%s'\n (service_type='%s')\n",
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d->control_conn_url, d->conn_service_type);
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debug_printf("event_conn_url='%s'\n", d->event_conn_url);
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debug_printf("control_cif_url='%s'\n (service_type='%s')\n",
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d->control_cif_url, d->cif_service_type);
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if((d->cif_service_type == NULL)
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|| (strlen(d->cif_service_type) == 0)
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|| (!COMPARE(d->cif_service_type, "urn:schemas-upnp-org:service:WANCommonInterfaceConfig:"))) {
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d->parent->ready_cb(UPNPC_ERR_NOT_IGD, d->parent, d, d->parent->cb_data);
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} else {
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d->state |= UPNPC_DEVICE_GETSTATUS;
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upnpc_get_status_info(d);
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}
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}
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#ifdef ENABLE_UPNP_EVENTS
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static void upnpc_subscribe_response(struct evhttp_request * req, void * pvoid)
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{
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size_t len;
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unsigned char * data;
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struct evbuffer * input_buffer;
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upnpc_device_t * d = (upnpc_device_t *)pvoid;
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if(req == NULL) {
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debug_printf("%s(%p, %p) NULL argument !\n", __func__, req, pvoid);
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return;
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}
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input_buffer = evhttp_request_get_input_buffer(req);
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len = evbuffer_get_length(input_buffer);
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data = evbuffer_pullup(input_buffer, len);
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debug_printf("%s %d (%d bytes)\n", __func__, evhttp_request_get_response_code(req), (int)len);
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d->state &= ~UPNPC_DEVICE_SOAP_REQ;
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if(evhttp_request_get_response_code(req) != HTTP_OK) {
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/* TODO ERROR */
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} else {
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const char * sid;
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struct evkeyvalq * headers = evhttp_request_get_input_headers(req);
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sid = evhttp_find_header(headers, "sid");
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debug_printf("SID=%s\n", sid);
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if(sid) {
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if(d->event_conn_sid)
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free(d->event_conn_sid);
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d->event_conn_sid = strdup(sid);
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}
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}
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}
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#endif /* ENABLE_UPNP_EVENTS */
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static void upnpc_soap_response(struct evhttp_request * req, void * pvoid)
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{
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size_t len;
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unsigned char * data;
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struct evbuffer * input_buffer;
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upnpc_device_t * d = (upnpc_device_t *)pvoid;
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int code;
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if(req == NULL) {
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debug_printf("%s(%p, %p) NULL argument !\n", __func__, req, pvoid);
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return;
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}
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code = evhttp_request_get_response_code(req);
|
|
input_buffer = evhttp_request_get_input_buffer(req);
|
|
len = evbuffer_get_length(input_buffer);
|
|
data = evbuffer_pullup(input_buffer, len);
|
|
debug_printf("%s %d (%d bytes)\n", __func__, code, (int)len);
|
|
debug_printf("%.*s\n", (int)len, (char *)data);
|
|
if(data == NULL)
|
|
return;
|
|
|
|
ClearNameValueList(&d->soap_response_data);
|
|
ParseNameValue((char *)data, (int)len,
|
|
&d->soap_response_data);
|
|
d->state &= ~UPNPC_DEVICE_SOAP_REQ;
|
|
if(d->state & UPNPC_DEVICE_READY) {
|
|
d->parent->soap_cb(code, d->parent, d, d->parent->cb_data);
|
|
} else if(d->state & UPNPC_DEVICE_GETSTATUS) {
|
|
const char * connection_status;
|
|
d->state &= ~UPNPC_DEVICE_GETSTATUS;
|
|
connection_status = GetValueFromNameValueList(&d->soap_response_data, "NewConnectionStatus");
|
|
d->state |= UPNPC_DEVICE_READY;
|
|
if((code == 200) && connection_status && (0 == strcmp("Connected", connection_status))) {
|
|
d->parent->ready_cb(code, d->parent, d, d->parent->cb_data);
|
|
d->state |= UPNPC_DEVICE_CONNECTED;
|
|
event_del(d->parent->ev_ssdp_recv);
|
|
} else {
|
|
d->parent->ready_cb(UPNPC_ERR_NOT_CONNECTED, d->parent, d, d->parent->cb_data);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int upnpc_get_desc(upnpc_device_t * d, const char * url)
|
|
{
|
|
char hostname[MAXHOSTNAMELEN+1];
|
|
char hostname_port[MAXHOSTNAMELEN+1+6];
|
|
unsigned short port;
|
|
char * path;
|
|
unsigned int scope_id;
|
|
struct evhttp_request * req;
|
|
struct evkeyvalq * headers;
|
|
|
|
/* if(d->root_desc_location == NULL) {
|
|
return -1;
|
|
} */
|
|
if(!parseURL(url/*d->root_desc_location*/, hostname, &port,
|
|
&path, &scope_id)) {
|
|
return -1;
|
|
}
|
|
if(port != 80)
|
|
snprintf(hostname_port, sizeof(hostname_port), "%s:%hu", hostname, port);
|
|
else
|
|
strncpy(hostname_port, hostname, sizeof(hostname_port));
|
|
if(d->desc_conn == NULL) {
|
|
d->desc_conn = evhttp_connection_base_new(d->parent->base, NULL, hostname, port);
|
|
}
|
|
#ifdef DEBUG
|
|
evhttp_connection_set_closecb(d->desc_conn, upnpc_conn_close_cb, d);
|
|
#endif /* DEBUG */
|
|
/*evhttp_connection_set_timeout(p->desc_conn, 600);*/
|
|
req = evhttp_request_new(upnpc_desc_received/*callback*/, d);
|
|
headers = evhttp_request_get_output_headers(req);
|
|
evhttp_add_header(headers, "Host", hostname_port);
|
|
evhttp_add_header(headers, "Connection", "close");
|
|
/*evhttp_add_header(headers, "User-Agent", "***");*/
|
|
evhttp_make_request(d->desc_conn, req, EVHTTP_REQ_GET, path);
|
|
return 0;
|
|
}
|
|
|
|
static char * build_url_string(const char * urlbase, const char * root_desc_url, const char * controlurl)
|
|
{
|
|
int l, n;
|
|
char * s;
|
|
const char * base;
|
|
char * p;
|
|
/* if controlurl is an absolute url, return it */
|
|
if(0 == memcmp("http://", controlurl, 7))
|
|
return strdup(controlurl);
|
|
base = (urlbase[0] == '\0') ? root_desc_url : urlbase;
|
|
n = strlen(base);
|
|
if(n > 7) {
|
|
p = strchr(base + 7, '/');
|
|
if(p)
|
|
n = p - base;
|
|
}
|
|
l = n + strlen(controlurl) + 1;
|
|
if(controlurl[0] != '/')
|
|
l++;
|
|
s = malloc(l);
|
|
if(s == NULL) return NULL;
|
|
memcpy(s, base, n);
|
|
if(controlurl[0] != '/')
|
|
s[n++] = '/';
|
|
memcpy(s + n, controlurl, l - n);
|
|
return s;
|
|
}
|
|
|
|
#define SOAPPREFIX "s"
|
|
#define SERVICEPREFIX "u"
|
|
#define SERVICEPREFIX2 'u'
|
|
|
|
static int upnpc_send_soap_request(upnpc_device_t * p, const char * url,
|
|
const char * service,
|
|
const char * method,
|
|
const struct upnp_args * args, int arg_count)
|
|
{
|
|
char action[128];
|
|
char * body;
|
|
const char fmt_soap[] =
|
|
"<?xml version=\"1.0\"?>\r\n"
|
|
"<" SOAPPREFIX ":Envelope "
|
|
"xmlns:" SOAPPREFIX "=\"http://schemas.xmlsoap.org/soap/envelope/\" "
|
|
SOAPPREFIX ":encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">"
|
|
"<" SOAPPREFIX ":Body>"
|
|
"<" SERVICEPREFIX ":%s xmlns:" SERVICEPREFIX "=\"%s\">"
|
|
"%s"
|
|
"</" SERVICEPREFIX ":%s>"
|
|
"</" SOAPPREFIX ":Body></" SOAPPREFIX ":Envelope>"
|
|
"\r\n";
|
|
int body_len;
|
|
char hostname[MAXHOSTNAMELEN+1];
|
|
char hostname_port[MAXHOSTNAMELEN+1+6];
|
|
unsigned short port;
|
|
char * path;
|
|
unsigned int scope_id;
|
|
char * args_xml = NULL;
|
|
struct evhttp_request * req;
|
|
struct evkeyvalq * headers;
|
|
struct evbuffer * buffer;
|
|
|
|
if(p->state & UPNPC_DEVICE_SOAP_REQ) {
|
|
debug_printf("%s: another SOAP request in progress\n", __func__);
|
|
return UPNPC_ERR_REQ_IN_PROGRESS;
|
|
}
|
|
|
|
if(arg_count > 0) {
|
|
int i;
|
|
size_t l, n;
|
|
for(i = 0, l = 0; i < arg_count; i++) {
|
|
/* <ELT>VAL</ELT> */
|
|
l += strlen(args[i].elt) * 2 + strlen(args[i].val) + 5;
|
|
}
|
|
args_xml = malloc(++l);
|
|
if(args_xml == NULL) {
|
|
return -1;
|
|
}
|
|
for(i = 0, n = 0; i < arg_count && n < l; i++) {
|
|
/* <ELT>VAL</ELT> */
|
|
n += snprintf(args_xml + n, l - n, "<%s>%s</%s>",
|
|
args[i].elt, args[i].val, args[i].elt);
|
|
}
|
|
}
|
|
|
|
body_len = snprintf(NULL, 0, fmt_soap, method, service, args_xml?args_xml:"", method);
|
|
body = malloc(body_len + 1);
|
|
if(body == NULL) {
|
|
free(args_xml);
|
|
return -1;
|
|
}
|
|
if(snprintf(body, body_len + 1, fmt_soap, method, service, args_xml?args_xml:"", method) != body_len) {
|
|
debug_printf("%s: snprintf() returned strange value...\n", __func__);
|
|
}
|
|
free(args_xml);
|
|
args_xml = NULL;
|
|
if(!parseURL(url, hostname, &port, &path, &scope_id)) {
|
|
free(body);
|
|
return -1;
|
|
}
|
|
if(port != 80)
|
|
snprintf(hostname_port, sizeof(hostname_port), "%s:%hu", hostname, port);
|
|
else
|
|
strncpy(hostname_port, hostname, sizeof(hostname_port));
|
|
snprintf(action, sizeof(action), "\"%s#%s\"", service, method);
|
|
if(p->soap_conn == NULL) {
|
|
p->soap_conn = evhttp_connection_base_new(p->parent->base, NULL, hostname, port);
|
|
}
|
|
req = evhttp_request_new(upnpc_soap_response, p);
|
|
headers = evhttp_request_get_output_headers(req);
|
|
buffer = evhttp_request_get_output_buffer(req);
|
|
evhttp_add_header(headers, "Host", hostname_port);
|
|
evhttp_add_header(headers, "SOAPAction", action);
|
|
evhttp_add_header(headers, "Content-Type", "text/xml");
|
|
/*evhttp_add_header(headers, "User-Agent", "***");*/
|
|
/*evhttp_add_header(headers, "Cache-Control", "no-cache");*/
|
|
/*evhttp_add_header(headers, "Pragma", "no-cache");*/
|
|
evbuffer_add(buffer, body, body_len);
|
|
evhttp_make_request(p->soap_conn, req, EVHTTP_REQ_POST, path);
|
|
free(body);
|
|
p->state |= UPNPC_DEVICE_SOAP_REQ;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef ENABLE_UPNP_EVENTS
|
|
#define EVHTTP_REQ_NOTIFY ((EVHTTP_REQ_MAX) << 1)
|
|
#define EVHTTP_REQ_SUBSCRIBE ((EVHTTP_REQ_NOTIFY) << 1)
|
|
static const struct evhttp_extended_method ext_methods[] = {
|
|
{"NOTIFY", EVHTTP_REQ_NOTIFY, EVHTTP_METHOD_HAS_BODY},
|
|
{"SUBSCRIBE", EVHTTP_REQ_SUBSCRIBE, EVHTTP_METHOD_HAS_BODY},
|
|
{NULL, 0, 0}
|
|
};
|
|
|
|
void upnpc_event_conn_req(struct evhttp_request * req, void * data)
|
|
{
|
|
size_t len;
|
|
char * xml_data;
|
|
struct evbuffer * input_buffer;
|
|
struct evkeyvalq * headers;
|
|
const char * sid;
|
|
const char * nts;
|
|
const char * nt;
|
|
const char * seq;
|
|
struct NameValueParserData parsed_data;
|
|
struct NameValue * nv;
|
|
upnpc_device_t * d = (upnpc_device_t *)data;
|
|
|
|
debug_printf("%s(%p, %p)\n", __func__, req, d);
|
|
headers = evhttp_request_get_input_headers(req);
|
|
input_buffer = evhttp_request_get_input_buffer(req);
|
|
len = evbuffer_get_length(input_buffer);
|
|
sid = evhttp_find_header(headers, "sid");
|
|
nts = evhttp_find_header(headers, "nts");
|
|
nt = evhttp_find_header(headers, "nt");
|
|
seq = evhttp_find_header(headers, "seq");
|
|
if(len == 0 || nts == NULL || nt == NULL) {
|
|
/* 400 Bad request :
|
|
* The NT or NTS header field is missing
|
|
* or the request is malformed. */
|
|
evhttp_send_reply(req, 400, "Bad Request", NULL);
|
|
return;
|
|
}
|
|
debug_printf("SID=%s NTS=%s SEQ=%s\n", sid, nts, seq);
|
|
if(sid == NULL || 0 != strcmp(sid, d->event_conn_sid)
|
|
|| 0 != strcmp(nt, "upnp:event") || 0 != strcmp(nts, "upnp:propchange")) {
|
|
/* 412 Precondition Failed :
|
|
* An SID does not correspond to a known, un-expired subscription
|
|
* or the NT header field does not equal upnp:event
|
|
* or the NTS header field does not equal upnp:propchange
|
|
* or the SID header field is missing or empty. */
|
|
evhttp_send_reply(req, 412, "Precondition Failed", NULL);
|
|
return;
|
|
}
|
|
xml_data = (char *)evbuffer_pullup(input_buffer, len);
|
|
/*debug_printf("%.*s\n", len, xml_data);*/
|
|
ParseNameValue(xml_data, len, &parsed_data);
|
|
for(nv = parsed_data.l_head; nv != NULL; nv = nv->l_next) {
|
|
if(d->parent->value_changed_cb) {
|
|
d->parent->value_changed_cb(d->parent, d, d->parent->cb_data, d->conn_service_type, nv->name, nv->value);
|
|
} else {
|
|
debug_printf("%s=%s\n", nv->name, nv->value);
|
|
}
|
|
}
|
|
ClearNameValueList(&parsed_data);
|
|
/* response : 200 OK */
|
|
evhttp_send_reply(req, 200, "OK", NULL);
|
|
}
|
|
#endif /* ENABLE_UPNP_EVENTS */
|
|
|
|
/* public functions */
|
|
int upnpc_init(upnpc_t * p, struct event_base * base, const char * multicastif,
|
|
upnpc_callback_fn ready_cb, upnpc_callback_fn soap_cb, void * cb_data)
|
|
{
|
|
int opt = 1;
|
|
struct sockaddr_in addr;
|
|
|
|
if(p == NULL || base == NULL)
|
|
return UPNPC_ERR_INVALID_ARGS;
|
|
memset(p, 0, sizeof(upnpc_t)); /* clean everything */
|
|
p->base = base;
|
|
p->ready_cb = ready_cb;
|
|
p->soap_cb = soap_cb;
|
|
p->cb_data = cb_data;
|
|
p->ttl = 2;
|
|
/* open the socket for SSDP */
|
|
p->ssdp_socket = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
if(p->ssdp_socket < 0) {
|
|
return UPNPC_ERR_SOCKET_FAILED;
|
|
}
|
|
/* set multicast TTL */
|
|
if(setsockopt(p->ssdp_socket, IPPROTO_IP, IP_MULTICAST_TTL, &p->ttl, sizeof(p->ttl) < 0))
|
|
{
|
|
/* not a fatal error */
|
|
debug_printf("setsockopt(%d, ..., IP_MULTICAST_TTL, ...) FAILED\n", p->ssdp_socket);
|
|
}
|
|
/* set REUSEADDR */
|
|
#ifdef _WIN32
|
|
if(setsockopt(p->ssdp_socket, SOL_SOCKET, SO_REUSEADDR, (const char *)&opt, sizeof(opt)) < 0) {
|
|
#else /* _WIN32 */
|
|
if(setsockopt(p->ssdp_socket, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
|
|
#endif /* _WIN32 */
|
|
/* non fatal error ! */
|
|
debug_printf("setsockopt(%d, SOL_SOCKET, SO_REUSEADDR, ...) FAILED\n", p->ssdp_socket);
|
|
}
|
|
if(evutil_make_socket_nonblocking(p->ssdp_socket) < 0) {
|
|
debug_printf("evutil_make_socket_nonblocking FAILED\n");
|
|
}
|
|
|
|
/* receive address */
|
|
memset(&addr, 0, sizeof(struct sockaddr_in));
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_addr.s_addr = INADDR_ANY;
|
|
/*addr.sin_port = htons(SSDP_PORT);*/
|
|
|
|
if(multicastif) {
|
|
struct in_addr mc_if;
|
|
mc_if.s_addr = inet_addr(multicastif);
|
|
addr.sin_addr.s_addr = mc_if.s_addr;
|
|
if(setsockopt(p->ssdp_socket, IPPROTO_IP, IP_MULTICAST_IF, (const char *)&mc_if, sizeof(mc_if)) < 0) {
|
|
PRINT_SOCKET_ERROR("setsockopt");
|
|
/* non fatal error ! */
|
|
}
|
|
}
|
|
|
|
/* bind the socket to the ssdp address in order to receive responses */
|
|
if(bind(p->ssdp_socket, (struct sockaddr *)&addr, sizeof(struct sockaddr_in)) != 0) {
|
|
close(p->ssdp_socket);
|
|
return UPNPC_ERR_BIND_FAILED;
|
|
}
|
|
return UPNPC_OK;
|
|
}
|
|
|
|
int upnpc_start(upnpc_t * p)
|
|
{
|
|
struct timeval timeout;
|
|
if(p == NULL || p->base == NULL)
|
|
return UPNPC_ERR_INVALID_ARGS;
|
|
/* event on SSDP */
|
|
p->ev_ssdp_recv = event_new(p->base, p->ssdp_socket,
|
|
EV_READ|EV_PERSIST,
|
|
(event_callback_fn)upnpc_receive_and_parse_ssdp, p);
|
|
timeout.tv_sec = 3;
|
|
timeout.tv_usec = 0;
|
|
if(event_add(p->ev_ssdp_recv, &timeout)) {
|
|
debug_printf("event_add FAILED\n");
|
|
}
|
|
p->ev_ssdp_writable = event_new(p->base, p->ssdp_socket,
|
|
EV_WRITE,
|
|
(event_callback_fn)upnpc_send_ssdp_msearch, p);
|
|
if(event_add(p->ev_ssdp_writable, NULL)) {
|
|
debug_printf("event_add FAILED\n");
|
|
}
|
|
return UPNPC_OK;
|
|
}
|
|
|
|
int upnpc_set_local_address(upnpc_t * p, const char * address, uint16_t port)
|
|
{
|
|
if(!p || !address) return UPNPC_ERR_INVALID_ARGS;
|
|
p->local_address = strdup(address); /* TODO check error */
|
|
p->local_port = port;
|
|
return UPNPC_OK;
|
|
}
|
|
|
|
#ifdef ENABLE_UPNP_EVENTS
|
|
int upnpc_set_event_callback(upnpc_t * p, upnpc_event_callback_fn cb)
|
|
{
|
|
if(!p || !cb) return UPNPC_ERR_INVALID_ARGS;
|
|
p->value_changed_cb = cb;
|
|
return UPNPC_OK;
|
|
}
|
|
#endif /* ENABLE_UPNP_EVENTS */
|
|
|
|
static void upnpc_device_finalize(upnpc_device_t * d)
|
|
{
|
|
d->state = 0;
|
|
free(d->root_desc_location);
|
|
d->root_desc_location = NULL;
|
|
free(d->control_cif_url);
|
|
d->control_cif_url = NULL;
|
|
free(d->event_cif_url);
|
|
d->event_cif_url = NULL;
|
|
free(d->cif_service_type);
|
|
d->cif_service_type = NULL;
|
|
free(d->control_conn_url);
|
|
d->control_conn_url = NULL;
|
|
free(d->event_conn_url);
|
|
d->event_conn_url = NULL;
|
|
free(d->conn_service_type);
|
|
d->conn_service_type = NULL;
|
|
if(d->desc_conn) {
|
|
evhttp_connection_free(d->desc_conn);
|
|
d->desc_conn = NULL;
|
|
}
|
|
if(d->soap_conn) {
|
|
evhttp_connection_free(d->soap_conn);
|
|
d->soap_conn = NULL;
|
|
}
|
|
ClearNameValueList(&d->soap_response_data);
|
|
#ifdef ENABLE_UPNP_EVENTS
|
|
free(d->event_conn_sid);
|
|
d->event_conn_sid = NULL;
|
|
#endif /* ENABLE_UPNP_EVENTS */
|
|
}
|
|
|
|
int upnpc_finalize(upnpc_t * p)
|
|
{
|
|
if(!p) return UPNPC_ERR_INVALID_ARGS;
|
|
p->discover_device_index = 0;
|
|
if(p->ssdp_socket >= 0) {
|
|
close(p->ssdp_socket);
|
|
p->ssdp_socket = -1;
|
|
}
|
|
if(p->ev_ssdp_recv) {
|
|
event_free(p->ev_ssdp_recv);
|
|
p->ev_ssdp_recv = NULL;
|
|
}
|
|
if(p->ev_ssdp_writable) {
|
|
event_free(p->ev_ssdp_writable);
|
|
p->ev_ssdp_writable = NULL;
|
|
}
|
|
while(p->devices != NULL) {
|
|
upnpc_device_t * d = p->devices;
|
|
upnpc_device_finalize(d);
|
|
p->devices = d->next;
|
|
free(d);
|
|
}
|
|
free(p->local_address);
|
|
p->local_address = NULL;
|
|
#ifdef ENABLE_UPNP_EVENTS
|
|
if(p->http_server) {
|
|
evhttp_free(p->http_server);
|
|
p->http_server = NULL;
|
|
}
|
|
#endif /* ENABLE_UPNP_EVENTS */
|
|
return UPNPC_OK;
|
|
}
|
|
|
|
#ifdef ENABLE_UPNP_EVENTS
|
|
int upnpc_event_subscribe(upnpc_device_t * p)
|
|
{
|
|
char hostname[MAXHOSTNAMELEN+1];
|
|
char hostname_port[MAXHOSTNAMELEN+1+6];
|
|
unsigned short port;
|
|
char * path;
|
|
unsigned int scope_id;
|
|
struct evhttp_request * req;
|
|
struct evkeyvalq * headers;
|
|
char callback_header[7+15+1+5+9+2+1];
|
|
|
|
if(p->parent->http_server == NULL) {
|
|
/* HTTP server to receive event notifications */
|
|
p->parent->http_server = evhttp_new(p->parent->base);
|
|
if(p->parent->http_server == NULL) {
|
|
debug_printf("evhttp_new() FAILED\n");
|
|
return -1;
|
|
}
|
|
evhttp_set_extended_methods(p->parent->http_server, ext_methods);
|
|
evhttp_set_allowed_methods(p->parent->http_server, EVHTTP_REQ_NOTIFY);
|
|
evhttp_set_cb(p->parent->http_server, "/evt_conn", upnpc_event_conn_req, p);
|
|
if(evhttp_bind_socket(p->parent->http_server, p->parent->local_address, p->parent->local_port) < 0) {
|
|
debug_printf("evhttp_bind_socket() FAILED\n");
|
|
return -1;
|
|
}
|
|
}
|
|
/*if(!parseURL(p->event_cif_url, hostname, &port, &path, &scope_id)) {*/
|
|
if(!parseURL(p->event_conn_url, hostname, &port, &path, &scope_id)) {
|
|
return -1;
|
|
}
|
|
if(port != 80)
|
|
snprintf(hostname_port, sizeof(hostname_port), "%s:%hu", hostname, port);
|
|
else
|
|
strncpy(hostname_port, hostname, sizeof(hostname_port));
|
|
if(p->soap_conn == NULL) {
|
|
p->soap_conn = evhttp_connection_base_new(p->parent->base, NULL, hostname, port);
|
|
}
|
|
evhttp_connection_set_extended_methods(p->soap_conn, ext_methods);
|
|
req = evhttp_request_new(upnpc_subscribe_response, p);
|
|
headers = evhttp_request_get_output_headers(req);
|
|
/*buffer = evhttp_request_get_output_buffer(req);*/
|
|
evhttp_add_header(headers, "Host", hostname_port);
|
|
/*evhttp_add_header(headers, "User-Agent", "***");*/
|
|
snprintf(callback_header, sizeof(callback_header), "<http://%s:%hu/evt_conn>", p->parent->local_address, p->parent->local_port);
|
|
evhttp_add_header(headers, "Callback", callback_header);
|
|
evhttp_add_header(headers, "NT", "upnp:event");
|
|
/*evhttp_add_header(headers, "NTS", "");*/
|
|
evhttp_add_header(headers, "Timeout", "3600");
|
|
/*evbuffer_add(buffer, body, body_len);*/
|
|
evhttp_make_request(p->soap_conn, req, EVHTTP_REQ_SUBSCRIBE, path);
|
|
p->state |= UPNPC_DEVICE_SOAP_REQ;
|
|
return 0;
|
|
}
|
|
#endif /* ENABLE_UPNP_EVENTS */
|
|
|
|
int upnpc_get_external_ip_address(upnpc_device_t * p)
|
|
{
|
|
return upnpc_send_soap_request(p, p->control_conn_url,
|
|
p->conn_service_type/*"urn:schemas-upnp-org:service:WANIPConnection:1"*/,
|
|
"GetExternalIPAddress", NULL, 0);
|
|
}
|
|
|
|
int upnpc_get_link_layer_max_rate(upnpc_device_t * p)
|
|
{
|
|
return upnpc_send_soap_request(p, p->control_cif_url,
|
|
p->cif_service_type/*"urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1"*/,
|
|
"GetCommonLinkProperties", NULL, 0);
|
|
}
|
|
|
|
int upnpc_delete_port_mapping(upnpc_device_t * p,
|
|
const char * remote_host, unsigned short ext_port,
|
|
const char * proto)
|
|
{
|
|
struct upnp_args args[3];
|
|
char ext_port_str[8];
|
|
|
|
if(proto == NULL || ext_port == 0)
|
|
return UPNPC_ERR_INVALID_ARGS;
|
|
snprintf(ext_port_str, sizeof(ext_port_str), "%hu", ext_port);
|
|
args[0].elt = "NewRemoteHost";
|
|
args[0].val = remote_host?remote_host:"";
|
|
args[1].elt = "NewExternalPort";
|
|
args[1].val = ext_port_str;
|
|
args[2].elt = "NewProtocol";
|
|
args[2].val = proto;
|
|
return upnpc_send_soap_request(p, p->control_conn_url,
|
|
p->conn_service_type,/*"urn:schemas-upnp-org:service:WANIPConnection:1",*/
|
|
"DeletePortMapping",
|
|
args, 3);
|
|
}
|
|
|
|
int upnpc_add_port_mapping(upnpc_device_t * p,
|
|
const char * remote_host, unsigned short ext_port,
|
|
unsigned short int_port, const char * int_client,
|
|
const char * proto, const char * description,
|
|
unsigned int lease_duration)
|
|
{
|
|
struct upnp_args args[8];
|
|
char lease_duration_str[16];
|
|
char int_port_str[8];
|
|
char ext_port_str[8];
|
|
|
|
if(int_client == NULL || int_port == 0 || ext_port == 0 || proto == NULL)
|
|
return UPNPC_ERR_INVALID_ARGS;
|
|
snprintf(lease_duration_str, sizeof(lease_duration_str), "%u", lease_duration);
|
|
snprintf(int_port_str, sizeof(int_port_str), "%hu", int_port);
|
|
snprintf(ext_port_str, sizeof(ext_port_str), "%hu", ext_port);
|
|
args[0].elt = "NewRemoteHost";
|
|
args[0].val = remote_host?remote_host:"";
|
|
args[1].elt = "NewExternalPort";
|
|
args[1].val = ext_port_str;
|
|
args[2].elt = "NewProtocol";
|
|
args[2].val = proto;
|
|
args[3].elt = "NewInternalPort";
|
|
args[3].val = int_port_str;
|
|
args[4].elt = "NewInternalClient";
|
|
args[4].val = int_client;
|
|
args[5].elt = "NewEnabled";
|
|
args[5].val = "1";
|
|
args[6].elt = "NewPortMappingDescription";
|
|
args[6].val = description?description:"miniupnpc-libevent";
|
|
args[7].elt = "NewLeaseDuration";
|
|
args[7].val = lease_duration_str;
|
|
return upnpc_send_soap_request(p, p->control_conn_url,
|
|
p->conn_service_type/*"urn:schemas-upnp-org:service:WANIPConnection:1"*/,
|
|
"AddPortMapping",
|
|
args, 8);
|
|
}
|
|
|
|
int upnpc_get_status_info(upnpc_device_t * p)
|
|
{
|
|
return upnpc_send_soap_request(p, p->control_conn_url,
|
|
p->conn_service_type/*"urn:schemas-upnp-org:service:WANIPConnection:1"*/,
|
|
"GetStatusInfo", NULL, 0);
|
|
}
|