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-rw-r--r--src/TcpLog.cpp330
1 files changed, 330 insertions, 0 deletions
diff --git a/src/TcpLog.cpp b/src/TcpLog.cpp
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index 0000000..7161c92
--- /dev/null
+++ b/src/TcpLog.cpp
@@ -0,0 +1,330 @@
+/*
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Her Majesty the Queen in
+ Right of Canada (Communications Research Center Canada)
+ */
+/*
+ This file is part of CRC-DabMux.
+
+ CRC-DabMux is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ CRC-DabMux 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with CRC-DabMux. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "TcpLog.h"
+#include "InetAddress.h"
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef _WIN32
+# include <io.h>
+#
+# define vsnprintf _vsnprintf
+# define MSG_NOSIGNAL 0
+# define socklen_t int
+#else
+# include <sys/socket.h>
+# include <netinet/in.h>
+# include <arpa/inet.h>
+# include <unistd.h>
+#endif
+
+#include <sstream>
+
+
+const int TcpLog::EMERG = 0; // system is unusable
+const int TcpLog::ALERT = 1; // action must be taken immediately
+const int TcpLog::CRIT = 2; // critical conditions
+const int TcpLog::ERR = 3; // error conditions
+const int TcpLog::WARNING = 4; // warning conditions
+const int TcpLog::NOTICE = 5; // normal but significant condition
+const int TcpLog::INFO = 6; // informational
+const int TcpLog::DBG = 7; // debug-level messages
+
+
+TcpLog::TcpLog() : listenPort(0), client(-1), name(NULL), serverThread(0), running(false)
+{
+ buffer = (char*)malloc(512);
+ bufferSize = 512;
+ headers = (char**)malloc(sizeof(char**));
+ headers[0] = NULL;
+}
+
+
+TcpLog::~TcpLog()
+{
+ if (running) {
+ running = false;
+ }
+ if (client != -1) {
+ ::close(client);
+ }
+ if (headers != NULL) {
+ for (int count = 0; headers[count] != NULL; ++count) {
+ free(headers[count]);
+ }
+ free(headers);
+ }
+}
+
+
+//TcpLog::TcpLog(int port);
+
+
+void TcpLog::open(const char *ident, const int option, const int port)
+{
+ listenPort = port;
+
+ if (name != NULL) {
+ free(name);
+ }
+ name = strdup(ident);
+
+ if (running) {
+ running = false;
+#ifdef WIN32
+ DWORD status;
+ for (int i = 0; i < 5; ++i) {
+ if (GetExitCodeThread(serverThread, &status)) {
+ break;
+ }
+ Sleep(100);
+ }
+ TerminateThread(serverThread, 1);
+#else
+ pthread_join(serverThread, NULL);
+#endif
+ }
+ running = true;
+#ifdef _WIN32
+ serverThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)listen, this, 0, NULL);
+ if (serverThread == NULL) {
+ fprintf(stderr, "Can't create TCP listen thread\n");
+ }
+#else
+ pthread_create(&serverThread, NULL, (void*(*)(void*))listen, this);
+#endif
+}
+
+
+void TcpLog::printHeader(const int priority, const char *format, ...)
+{
+ static char last = '\n';
+ std::string beginning;
+ std::string message;
+ int ret;
+
+
+ beginning = "<";
+ beginning += '0' + (priority % 10);
+ beginning += "> ";
+
+ va_list argp;
+ va_start(argp, format);
+ for (ret = vsnprintf(buffer, bufferSize, format, argp);
+ ret >= bufferSize || ret == -1;
+ ret = vsprintf(buffer, format, argp)) {
+ if (ret == -1) {
+ buffer = (char*)realloc(buffer, bufferSize * 2);
+ bufferSize *= 2;
+ } else {
+ buffer = (char*)realloc(buffer, ret + 1);
+ bufferSize = ret + 1;
+ }
+ }
+ va_end(argp);
+
+ if (last == '\n') {
+ message += beginning;
+ }
+ message += buffer;
+
+ last = buffer[ret - 1];
+
+ for (unsigned long pos = message.find('\n');
+ pos != std::string::npos && ++pos != message.size();
+ pos = message.find('\n', pos)) {
+ message.insert(pos, beginning);
+ }
+
+ fprintf(stderr, message.c_str());
+ if (client != -1) {
+ if (write(client, message.c_str(), message.size())
+ != (int)message.size()) {
+ fprintf(stderr, "<6> Client closed\n");
+ ::close(client);
+ client = -1;
+ }
+ }
+
+ int count = 0;
+ while (headers[count++] != NULL) {
+ }
+ headers = (char**)realloc(headers, sizeof(char**) * (count + 1));
+ headers[count - 1] = strdup(message.c_str());
+ headers[count] = NULL;
+}
+
+
+void TcpLog::print(const int priority, const char *format, ...)
+{
+ static char last = '\n';
+ std::string beginning;
+ std::string message;
+ int ret;
+
+
+ beginning = "<";
+ beginning += '0' + (priority % 10);
+ beginning += "> ";
+
+ va_list argp;
+ va_start(argp, format);
+ for (ret = vsnprintf(buffer, bufferSize, format, argp);
+ ret >= bufferSize || ret == -1;
+ ret = vsprintf(buffer, format, argp)) {
+ if (ret == -1) {
+ buffer = (char*)realloc(buffer, bufferSize * 2);
+ bufferSize *= 2;
+ } else {
+ buffer = (char*)realloc(buffer, ret + 1);
+ bufferSize = ret + 1;
+ }
+ }
+ va_end(argp);
+
+ if (last == '\n') {
+ message += beginning;
+ }
+ message += buffer;
+
+ last = buffer[ret - 1];
+
+ for (unsigned long pos = message.find('\n');
+ pos != std::string::npos && ++pos != message.size();
+ pos = message.find('\n', pos)) {
+ message.insert(pos, beginning);
+ }
+
+ fprintf(stderr, message.c_str());
+ if (client != -1) {
+ if (send(client, message.c_str(), message.size(), MSG_NOSIGNAL)
+ != (int)message.size()) {
+ fprintf(stderr, "<6> Client closed\n");
+ ::close(client);
+ client = -1;
+ }
+ }
+}
+
+
+void TcpLog::close(void)
+{
+}
+
+
+void* TcpLog::listen(TcpLog* obj)
+{
+ int server;
+ struct sockaddr_in server_addr;
+ struct sockaddr_in client_addr;
+ socklen_t addrlen = sizeof(client_addr);
+
+#ifdef _WIN32
+ WSADATA wsaData;
+ WORD wVersionRequested = wVersionRequested = MAKEWORD( 2, 2 );
+
+ int res = WSAStartup( wVersionRequested, &wsaData );
+ if (res) {
+ fprintf(stderr, "Can't initialize winsock\n");
+ ExitThread(1);
+ }
+#endif
+ server = socket(PF_INET, SOCK_STREAM, 0);
+ if (server == INVALID_SOCKET) {
+#ifdef _WIN32
+ fprintf(stderr, "Can't create socket\n");
+ ExitThread(1);
+#else
+ perror("Can't create socket");
+ pthread_exit(NULL);
+#endif
+ }
+
+ int reuse = 1;
+ if (setsockopt(server, SOL_SOCKET, SO_REUSEADDR, (char*)&reuse, sizeof(reuse))
+ == -1) {
+ perror("Can't set socket reusable");
+ }
+
+ server_addr.sin_family = AF_INET;
+ server_addr.sin_port = htons(obj->listenPort);
+ server_addr.sin_addr.s_addr = INADDR_ANY;
+
+ if (bind(server, (struct sockaddr*)&server_addr, sizeof(server_addr))
+ == -1) {
+ perror("Can't bind socket");
+ fprintf(stderr, " port: %i\n", obj->listenPort);
+#ifdef _WIN32
+ ExitThread(1);
+#else
+ pthread_exit(NULL);
+#endif
+ }
+
+ if (::listen(server, 1) == -1) {
+ perror("Can't listen on socket");
+#ifdef _WIN32
+ ExitThread(1);
+#else
+ pthread_exit(NULL);
+#endif
+ }
+
+ while (obj->running) {
+ int client = accept(server, (struct sockaddr*)&client_addr, &addrlen);
+ if (client == INVALID_SOCKET) {
+#ifdef _WIN32
+ if (WSAGetLastError() != WSAEINTR) {
+ setInetError("Can't accept client");
+ fprintf(stderr, "%s: %s\n", inetErrDesc, inetErrMsg);
+ ExitThread(1);
+ }
+#else
+ perror("Can't accept client");
+ pthread_exit(NULL);
+#endif
+ }
+ obj->print(INFO, "%s:%d connected\n",
+ inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
+ if (obj->client != -1) {
+ ::close(obj->client);
+ }
+ obj->client = client;
+ for (int i = 0; obj->headers[i] != NULL; ++i) {
+ send(client, obj->headers[i], strlen(obj->headers[i]), MSG_NOSIGNAL);
+ }
+ }
+ if (obj->client != -1) {
+ ::close(obj->client);
+ obj->client = -1;
+ }
+ ::close(server);
+
+#ifdef _WIN32
+ ExitThread(1);
+#else
+ pthread_exit(NULL);
+#endif
+ return NULL;
+}
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