260 lines
7.6 KiB
C
260 lines
7.6 KiB
C
/*
|
|
* Web Services on Devices
|
|
*
|
|
* Copyright 2017-2018 Owen Rudge for CodeWeavers
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
|
|
#define COBJMACROS
|
|
|
|
#include "wsdapi_internal.h"
|
|
#include "wine/debug.h"
|
|
#include "wine/heap.h"
|
|
#include "iphlpapi.h"
|
|
#include "bcrypt.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(wsdapi);
|
|
|
|
#define SEND_ADDRESS_IPV4 0xEFFFFFFA /* 239.255.255.250 */
|
|
#define SEND_PORT 3702
|
|
|
|
static UCHAR send_address_ipv6[] = {0xFF,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0xC}; /* FF02::C */
|
|
|
|
#define UNICAST_UDP_REPEAT 1
|
|
#define MULTICAST_UDP_REPEAT 2
|
|
#define UDP_MIN_DELAY 50
|
|
#define UDP_MAX_DELAY 250
|
|
#define UDP_UPPER_DELAY 500
|
|
|
|
static void send_message(SOCKET s, char *data, int length, SOCKADDR_STORAGE *dest, int max_initial_delay, int repeat)
|
|
{
|
|
UINT delay;
|
|
int len;
|
|
|
|
/* Sleep for a random amount of time before sending the message */
|
|
if (max_initial_delay > 0)
|
|
{
|
|
BCryptGenRandom(NULL, (BYTE*) &delay, sizeof(UINT), BCRYPT_USE_SYSTEM_PREFERRED_RNG);
|
|
Sleep(delay % max_initial_delay);
|
|
}
|
|
|
|
len = (dest->ss_family == AF_INET6) ? sizeof(SOCKADDR_IN6) : sizeof(SOCKADDR_IN);
|
|
|
|
if (sendto(s, data, length, 0, (SOCKADDR *) dest, len) == SOCKET_ERROR)
|
|
WARN("Unable to send data to socket: %d\n", WSAGetLastError());
|
|
|
|
if (repeat-- <= 0) return;
|
|
|
|
BCryptGenRandom(NULL, (BYTE*) &delay, sizeof(UINT), BCRYPT_USE_SYSTEM_PREFERRED_RNG);
|
|
delay = delay % (UDP_MAX_DELAY - UDP_MIN_DELAY + 1) + UDP_MIN_DELAY;
|
|
|
|
for (;;)
|
|
{
|
|
Sleep(delay);
|
|
|
|
if (sendto(s, data, length, 0, (SOCKADDR *) dest, len) == SOCKET_ERROR)
|
|
WARN("Unable to send data to socket: %d\n", WSAGetLastError());
|
|
|
|
if (repeat-- <= 0) break;
|
|
delay = min(delay * 2, UDP_UPPER_DELAY);
|
|
}
|
|
}
|
|
|
|
typedef struct sending_thread_params
|
|
{
|
|
char *data;
|
|
int length;
|
|
SOCKET sock;
|
|
SOCKADDR_STORAGE dest;
|
|
int max_initial_delay;
|
|
} sending_thread_params;
|
|
|
|
static DWORD WINAPI sending_thread(LPVOID lpParam)
|
|
{
|
|
sending_thread_params *params = (sending_thread_params *) lpParam;
|
|
|
|
send_message(params->sock, params->data, params->length, ¶ms->dest, params->max_initial_delay,
|
|
MULTICAST_UDP_REPEAT);
|
|
closesocket(params->sock);
|
|
|
|
heap_free(params->data);
|
|
heap_free(params);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static BOOL send_udp_multicast_of_type(char *data, int length, int max_initial_delay, ULONG family)
|
|
{
|
|
IP_ADAPTER_ADDRESSES *adapter_addresses = NULL, *adapter_addr;
|
|
static const struct in6_addr i_addr_zero;
|
|
sending_thread_params *send_params;
|
|
ULONG bufferSize = 0;
|
|
LPSOCKADDR sockaddr;
|
|
BOOL ret = FALSE;
|
|
HANDLE thread_handle;
|
|
const char ttl = 8;
|
|
ULONG retval;
|
|
SOCKET s;
|
|
|
|
/* Get size of buffer for adapters */
|
|
retval = GetAdaptersAddresses(family, 0, NULL, NULL, &bufferSize);
|
|
|
|
if (retval != ERROR_BUFFER_OVERFLOW)
|
|
{
|
|
WARN("GetAdaptorsAddresses failed with error %08x\n", retval);
|
|
goto cleanup;
|
|
}
|
|
|
|
adapter_addresses = (IP_ADAPTER_ADDRESSES *) heap_alloc(bufferSize);
|
|
|
|
if (adapter_addresses == NULL)
|
|
{
|
|
WARN("Out of memory allocating space for adapter information\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Get list of adapters */
|
|
retval = GetAdaptersAddresses(family, 0, NULL, adapter_addresses, &bufferSize);
|
|
|
|
if (retval != ERROR_SUCCESS)
|
|
{
|
|
WARN("GetAdaptorsAddresses failed with error %08x\n", retval);
|
|
goto cleanup;
|
|
}
|
|
|
|
for (adapter_addr = adapter_addresses; adapter_addr != NULL; adapter_addr = adapter_addr->Next)
|
|
{
|
|
if (adapter_addr->FirstUnicastAddress == NULL)
|
|
{
|
|
TRACE("No address found for adaptor '%s' (%p)\n", debugstr_a(adapter_addr->AdapterName), adapter_addr);
|
|
continue;
|
|
}
|
|
|
|
sockaddr = adapter_addr->FirstUnicastAddress->Address.lpSockaddr;
|
|
|
|
/* Create a socket and bind to the adapter address */
|
|
s = socket(family, SOCK_DGRAM, IPPROTO_UDP);
|
|
|
|
if (s == INVALID_SOCKET)
|
|
{
|
|
WARN("Unable to create socket: %d\n", WSAGetLastError());
|
|
continue;
|
|
}
|
|
|
|
if (bind(s, sockaddr, adapter_addr->FirstUnicastAddress->Address.iSockaddrLength) == SOCKET_ERROR)
|
|
{
|
|
WARN("Unable to bind to socket (adaptor '%s' (%p)): %d\n", debugstr_a(adapter_addr->AdapterName),
|
|
adapter_addr, WSAGetLastError());
|
|
closesocket(s);
|
|
continue;
|
|
}
|
|
|
|
/* Set the multicast interface and TTL value */
|
|
setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, (char *) &i_addr_zero,
|
|
(family == AF_INET6) ? sizeof(struct in6_addr) : sizeof(struct in_addr));
|
|
setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl));
|
|
|
|
/* Set up the thread parameters */
|
|
send_params = heap_alloc(sizeof(*send_params));
|
|
|
|
send_params->data = heap_alloc(length);
|
|
memcpy(send_params->data, data, length);
|
|
send_params->length = length;
|
|
send_params->sock = s;
|
|
send_params->max_initial_delay = max_initial_delay;
|
|
|
|
memset(&send_params->dest, 0, sizeof(SOCKADDR_STORAGE));
|
|
send_params->dest.ss_family = family;
|
|
|
|
if (family == AF_INET)
|
|
{
|
|
SOCKADDR_IN *sockaddr4 = (SOCKADDR_IN *)&send_params->dest;
|
|
|
|
sockaddr4->sin_port = htons(SEND_PORT);
|
|
sockaddr4->sin_addr.S_un.S_addr = htonl(SEND_ADDRESS_IPV4);
|
|
}
|
|
else
|
|
{
|
|
SOCKADDR_IN6 *sockaddr6 = (SOCKADDR_IN6 *)&send_params->dest;
|
|
|
|
sockaddr6->sin6_port = htons(SEND_PORT);
|
|
memcpy(&sockaddr6->sin6_addr, &send_address_ipv6, sizeof(send_address_ipv6));
|
|
}
|
|
|
|
thread_handle = CreateThread(NULL, 0, sending_thread, send_params, 0, NULL);
|
|
|
|
if (thread_handle == NULL)
|
|
{
|
|
WARN("CreateThread failed (error %d)\n", GetLastError());
|
|
closesocket(s);
|
|
|
|
heap_free(send_params->data);
|
|
heap_free(send_params);
|
|
|
|
continue;
|
|
}
|
|
|
|
CloseHandle(thread_handle);
|
|
}
|
|
|
|
ret = TRUE;
|
|
|
|
cleanup:
|
|
heap_free(adapter_addresses);
|
|
|
|
return ret;
|
|
}
|
|
|
|
BOOL send_udp_multicast(IWSDiscoveryPublisherImpl *impl, char *data, int length, int max_initial_delay)
|
|
{
|
|
if ((impl->addressFamily & WSDAPI_ADDRESSFAMILY_IPV4) &&
|
|
(!send_udp_multicast_of_type(data, length,max_initial_delay, AF_INET))) return FALSE;
|
|
|
|
if ((impl->addressFamily & WSDAPI_ADDRESSFAMILY_IPV6) &&
|
|
(!send_udp_multicast_of_type(data, length, max_initial_delay, AF_INET6))) return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void terminate_networking(IWSDiscoveryPublisherImpl *impl)
|
|
{
|
|
BOOL needsCleanup = impl->publisherStarted;
|
|
|
|
impl->publisherStarted = FALSE;
|
|
|
|
if (needsCleanup)
|
|
WSACleanup();
|
|
}
|
|
|
|
BOOL init_networking(IWSDiscoveryPublisherImpl *impl)
|
|
{
|
|
WSADATA wsaData;
|
|
int ret = WSAStartup(MAKEWORD(2, 2), &wsaData);
|
|
|
|
if (ret != 0)
|
|
{
|
|
WARN("WSAStartup failed with error: %d\n", ret);
|
|
return FALSE;
|
|
}
|
|
|
|
impl->publisherStarted = TRUE;
|
|
|
|
/* TODO: Start listening */
|
|
return TRUE;
|
|
}
|