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