FreeRDP/winpr/libwinpr/utils/wlog/UdpAppender.c
2015-11-06 23:17:11 +01:00

210 lines
4.9 KiB
C

/**
* WinPR: Windows Portable Runtime
* WinPR Logger
*
* Copyright © 2015 Thincast Technologies GmbH
* Copyright © 2015 David FORT <contact@hardening-consulting.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/crt.h>
#include <winpr/environment.h>
#include <winpr/thread.h>
#include <winpr/wlog.h>
#include "wlog/Message.h"
#include "wlog/UdpAppender.h"
#ifndef _WIN32
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#endif
static BOOL WLog_UdpAppender_Open(wLog* log, wLogUdpAppender* appender)
{
char addressString[256];
struct addrinfo hints;
struct addrinfo* result;
int status, addrLen;
char *colonPos;
if (!appender)
return FALSE;
if (appender->targetAddrLen) /* already opened */
return TRUE;
colonPos = strchr(appender->host, ':');
if (!colonPos)
return FALSE;
addrLen = colonPos - appender->host;
memcpy(addressString, appender->host, addrLen);
addressString[addrLen] = '\0';
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_DGRAM;
status = getaddrinfo(addressString, colonPos+1, &hints, &result);
if (status != 0)
return FALSE;
if (result->ai_addrlen > sizeof(appender->targetAddr))
{
freeaddrinfo(result);
return FALSE;
}
memcpy(&appender->targetAddr, result->ai_addr, result->ai_addrlen);
appender->targetAddrLen = result->ai_addrlen;
return TRUE;
}
BOOL Wlog_UdpAppender_SetTarget(wLogUdpAppender* appender, const char *host)
{
appender->targetAddrLen = 0;
if (appender->host)
free(appender->host);
appender->host = _strdup(host);
return (appender->host != NULL) && WLog_UdpAppender_Open(NULL, appender);
}
static BOOL WLog_UdpAppender_Close(wLog* log, wLogUdpAppender* appender)
{
if (!log || !appender)
return FALSE;
return TRUE;
}
static BOOL WLog_UdpAppender_WriteMessage(wLog* log, wLogUdpAppender* appender, wLogMessage* message)
{
char prefix[WLOG_MAX_PREFIX_SIZE];
if (!log || !appender || !message)
return FALSE;
message->PrefixString = prefix;
WLog_Layout_GetMessagePrefix(log, appender->Layout, message);
_sendto(appender->sock, message->PrefixString, strlen(message->PrefixString),
0, &appender->targetAddr, appender->targetAddrLen);
_sendto(appender->sock, message->TextString, strlen(message->TextString),
0, &appender->targetAddr, appender->targetAddrLen);
_sendto(appender->sock, "\n", 1, 0, &appender->targetAddr, appender->targetAddrLen);
return TRUE;
}
static BOOL WLog_UdpAppender_WriteDataMessage(wLog* log, wLogUdpAppender* appender, wLogMessage* message)
{
if (!log || !appender || !message)
return FALSE;
return TRUE;
}
static BOOL WLog_UdpAppender_WriteImageMessage(wLog* log, wLogUdpAppender* appender, wLogMessage* message)
{
if (!log || !appender || !message)
return FALSE;
return TRUE;
}
wLogUdpAppender* WLog_UdpAppender_New(wLog* log)
{
wLogUdpAppender* appender;
DWORD nSize;
LPCSTR name;
appender = (wLogUdpAppender*) calloc(1, sizeof(wLogUdpAppender));
if (!appender)
return NULL;
appender->Type = WLOG_APPENDER_UDP;
appender->Open = (WLOG_APPENDER_OPEN_FN) WLog_UdpAppender_Open;
appender->Close = (WLOG_APPENDER_OPEN_FN) WLog_UdpAppender_Close;
appender->WriteMessage =
(WLOG_APPENDER_WRITE_MESSAGE_FN) WLog_UdpAppender_WriteMessage;
appender->WriteDataMessage =
(WLOG_APPENDER_WRITE_DATA_MESSAGE_FN) WLog_UdpAppender_WriteDataMessage;
appender->WriteImageMessage =
(WLOG_APPENDER_WRITE_IMAGE_MESSAGE_FN) WLog_UdpAppender_WriteImageMessage;
appender->sock = _socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (appender->sock == INVALID_SOCKET)
goto error_sock;
name = "WLOG_UDP_TARGET";
nSize = GetEnvironmentVariableA(name, NULL, 0);
if (nSize)
{
appender->host = (LPSTR) malloc(nSize);
if (!appender->host)
goto error_host_alloc;
GetEnvironmentVariableA(name, appender->host, nSize);
if (!WLog_UdpAppender_Open(log, appender))
goto error_open;
}
else
{
appender->host = _strdup("127.0.0.1:20000");
if (!appender->host)
goto error_host_alloc;
}
return appender;
error_open:
free(appender->host);
error_host_alloc:
closesocket(appender->sock);
error_sock:
free(appender);
return NULL;
}
void WLog_UdpAppender_Free(wLog* log, wLogUdpAppender* appender)
{
if (appender)
{
if (appender->sock != INVALID_SOCKET)
{
closesocket(appender->sock);
appender->sock = INVALID_SOCKET;
}
free(appender->host);
free(appender);
}
}