Milestone 5: deliver embedded RDP sessions and lifecycle hardening
This commit is contained in:
Keith Smith
278
third_party/FreeRDP/winpr/libwinpr/utils/wlog/FileAppender.c
vendored
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278
third_party/FreeRDP/winpr/libwinpr/utils/wlog/FileAppender.c
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/**
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* WinPR: Windows Portable Runtime
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* WinPR Logger
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*
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* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.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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#include <winpr/config.h>
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#include "FileAppender.h"
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#include "Message.h"
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#include <winpr/crt.h>
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#include <winpr/environment.h>
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#include <winpr/file.h>
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#include <winpr/path.h>
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typedef struct
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{
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wLogAppender common;
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char* FileName;
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char* FilePath;
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char* FullFileName;
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FILE* FileDescriptor;
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} wLogFileAppender;
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static BOOL WLog_FileAppender_SetOutputFileName(wLogFileAppender* appender, const char* filename)
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{
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WINPR_ASSERT(appender);
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WINPR_ASSERT(filename);
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appender->FileName = _strdup(filename);
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return appender->FileName != nullptr;
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}
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static BOOL WLog_FileAppender_SetOutputFilePath(wLogFileAppender* appender, const char* filepath)
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{
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appender->FilePath = _strdup(filepath);
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return appender->FilePath != nullptr;
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}
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static BOOL WLog_FileAppender_Open(wLog* log, wLogAppender* appender)
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{
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wLogFileAppender* fileAppender = nullptr;
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if (!log || !appender)
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return FALSE;
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fileAppender = (wLogFileAppender*)appender;
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if (!fileAppender->FilePath)
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{
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fileAppender->FilePath = GetKnownSubPath(KNOWN_PATH_TEMP, "wlog");
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if (!fileAppender->FilePath)
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return FALSE;
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}
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if (!fileAppender->FileName)
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{
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fileAppender->FileName = (char*)malloc(MAX_PATH);
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if (!fileAppender->FileName)
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return FALSE;
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(void)sprintf_s(fileAppender->FileName, MAX_PATH, "%" PRIu32 ".log", GetCurrentProcessId());
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}
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if (!fileAppender->FullFileName)
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{
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fileAppender->FullFileName =
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GetCombinedPath(fileAppender->FilePath, fileAppender->FileName);
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if (!fileAppender->FullFileName)
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return FALSE;
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}
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if (!winpr_PathFileExists(fileAppender->FilePath))
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{
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if (!winpr_PathMakePath(fileAppender->FilePath, nullptr))
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return FALSE;
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UnixChangeFileMode(fileAppender->FilePath, 0xFFFF);
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}
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fileAppender->FileDescriptor = winpr_fopen(fileAppender->FullFileName, "a+");
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return fileAppender->FileDescriptor != nullptr;
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}
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static BOOL WLog_FileAppender_Close(wLog* log, wLogAppender* appender)
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{
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wLogFileAppender* fileAppender = nullptr;
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if (!log || !appender)
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return FALSE;
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fileAppender = (wLogFileAppender*)appender;
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if (!fileAppender->FileDescriptor)
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return TRUE;
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(void)fclose(fileAppender->FileDescriptor);
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fileAppender->FileDescriptor = nullptr;
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return TRUE;
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}
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static BOOL WLog_FileAppender_WriteMessage(wLog* log, wLogAppender* appender,
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const wLogMessage* cmessage)
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{
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if (!log || !appender || !cmessage)
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return FALSE;
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wLogFileAppender* fileAppender = (wLogFileAppender*)appender;
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FILE* fp = fileAppender->FileDescriptor;
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if (!fp)
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return FALSE;
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char prefix[WLOG_MAX_PREFIX_SIZE] = WINPR_C_ARRAY_INIT;
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WLog_Layout_GetMessagePrefix(log, appender->Layout, cmessage, prefix, sizeof(prefix));
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(void)fprintf(fp, "%s%s\n", prefix, cmessage->TextString);
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(void)fflush(fp); /* slow! */
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return TRUE;
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}
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static int g_DataId = 0;
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static BOOL WLog_FileAppender_WriteDataMessage(wLog* log, wLogAppender* appender,
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const wLogMessage* message)
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{
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int DataId = 0;
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char* FullFileName = nullptr;
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if (!log || !appender || !message)
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return FALSE;
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DataId = g_DataId++;
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FullFileName = WLog_Message_GetOutputFileName(DataId, "dat");
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WLog_DataMessage_Write(FullFileName, message->Data, message->Length);
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free(FullFileName);
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return TRUE;
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}
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static int g_ImageId = 0;
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static BOOL WLog_FileAppender_WriteImageMessage(wLog* log, wLogAppender* appender,
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const wLogMessage* message)
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{
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int ImageId = 0;
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char* FullFileName = nullptr;
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if (!log || !appender || !message)
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return FALSE;
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ImageId = g_ImageId++;
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FullFileName = WLog_Message_GetOutputFileName(ImageId, "bmp");
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WLog_ImageMessage_Write(FullFileName, message->ImageData, message->ImageWidth,
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message->ImageHeight, message->ImageBpp);
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free(FullFileName);
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return TRUE;
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}
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static BOOL WLog_FileAppender_Set(wLogAppender* appender, const char* setting, void* value)
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{
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wLogFileAppender* fileAppender = (wLogFileAppender*)appender;
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/* Just check the value string is not empty */
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if (!value || (strnlen(value, 2) == 0))
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return FALSE;
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if (!strcmp("outputfilename", setting))
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return WLog_FileAppender_SetOutputFileName(fileAppender, (const char*)value);
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if (!strcmp("outputfilepath", setting))
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return WLog_FileAppender_SetOutputFilePath(fileAppender, (const char*)value);
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return FALSE;
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}
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static void WLog_FileAppender_Free(wLogAppender* appender)
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{
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wLogFileAppender* fileAppender = nullptr;
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if (appender)
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{
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fileAppender = (wLogFileAppender*)appender;
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free(fileAppender->FileName);
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free(fileAppender->FilePath);
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free(fileAppender->FullFileName);
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free(fileAppender);
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}
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}
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wLogAppender* WLog_FileAppender_New(WINPR_ATTR_UNUSED wLog* log)
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{
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LPSTR env = nullptr;
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LPCSTR name = nullptr;
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DWORD nSize = 0;
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wLogFileAppender* FileAppender = nullptr;
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FileAppender = (wLogFileAppender*)calloc(1, sizeof(wLogFileAppender));
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if (!FileAppender)
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return nullptr;
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FileAppender->common.Type = WLOG_APPENDER_FILE;
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FileAppender->common.Open = WLog_FileAppender_Open;
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FileAppender->common.Close = WLog_FileAppender_Close;
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FileAppender->common.WriteMessage = WLog_FileAppender_WriteMessage;
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FileAppender->common.WriteDataMessage = WLog_FileAppender_WriteDataMessage;
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FileAppender->common.WriteImageMessage = WLog_FileAppender_WriteImageMessage;
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FileAppender->common.Free = WLog_FileAppender_Free;
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FileAppender->common.Set = WLog_FileAppender_Set;
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name = "WLOG_FILEAPPENDER_OUTPUT_FILE_PATH";
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nSize = GetEnvironmentVariableA(name, nullptr, 0);
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if (nSize)
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{
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BOOL status = 0;
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env = (LPSTR)malloc(nSize);
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if (!env)
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goto error_free;
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if (GetEnvironmentVariableA(name, env, nSize) != nSize - 1)
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{
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free(env);
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goto error_free;
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}
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status = WLog_FileAppender_SetOutputFilePath(FileAppender, env);
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free(env);
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if (!status)
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goto error_free;
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}
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name = "WLOG_FILEAPPENDER_OUTPUT_FILE_NAME";
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nSize = GetEnvironmentVariableA(name, nullptr, 0);
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if (nSize)
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{
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BOOL status = FALSE;
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env = (LPSTR)malloc(nSize);
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if (!env)
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goto error_output_file_name;
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if (GetEnvironmentVariableA(name, env, nSize) == nSize - 1)
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status = WLog_FileAppender_SetOutputFileName(FileAppender, env);
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free(env);
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if (!status)
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goto error_output_file_name;
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}
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return (wLogAppender*)FileAppender;
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error_output_file_name:
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free(FileAppender->FilePath);
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error_free:
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free(FileAppender);
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return nullptr;
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}
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