int EsdlCMDShell::run()
{
try
{
if (!parseCommandLineOptions(args))
return 1;
finalizeOptions(globals);
return processCMD(args);
}
catch (IException *E)
{
StringBuffer m;
fputs(E->errorMessage(m).newline().str(), stderr);
E->Release();
return 2;
}
#ifndef _DEBUG
catch (...)
{
ERRLOG("Unexpected exception\n");
return 4;
}
#endif
return 0;
}
/*
use: process a <command> or <list>
args: cmd = root of command tree
return: status of process
*/
int processCMD(CMD* cmd) {
int status; // status of process
// <and-or> ; <command> and <list> ; cases
if (cmd->type == SEP_END) {
// left child
status = processCMD(cmd->left);
// right child
if (cmd->right) {
status = processCMD(cmd->right);
}
}
// <and-or> & <command> and <list> & cases
else if (cmd->type == SEP_BG) {
pid_t pID = fork(); // process ID of fork
// error check
if (pID < 0) {
status = errno;
errorExit(status);
}
// child process
else if (pID == 0) {
status = processCMD(cmd->left);
exit(status);
}
// parent process
else {
status = 0;
fprintf(stderr, "Backgrounded: %d\n", pID);
if (cmd->right) {
status = processCMD(cmd->right);
}
}
}
// <and-or> case
else {
status = processAndOr(cmd, 0, false);
}
return status;
}
//MAIN-----------------------------------------------------------------------------------
int main()
{
char usrInput[maxUsrIn]; //allocate space for a line of user input (static)
//loop - read user input and tokenize
//end loop and exit shell if user presses control-d
//control-d = ^d = EOF
printf("? ");
while(fgets(usrInput, maxUsrIn, stdin) != NULL) {
//tokenize user input
tokenize(usrInput, " "); //pointer to an array of pointers
processCMD();
printf("? ");
}
exitMsg();
return 0;
}
void Connection::onControlSktReadyRead()
{
packetSize = 0;
//get packet size
QDataStream in(this);
in.setVersion(QDataStream::Qt_4_8);
if (packetSize == 0) {
if (this->bytesAvailable() < (int)sizeof(quint16)){
qDebug() << "\t E: packet size wrong"
<< this->bytesAvailable()
<< "/"
<< (int)sizeof(quint16);;
return;
}
in >> packetSize;
}
//ensure data size available
if (this->bytesAvailable() < packetSize){
qDebug() << "\t E: not enough data bytes"
<< this->bytesAvailable()
<< "/need "
<< packetSize;
return;
}
//read in data
QByteArray payloadArrey;
in >> payloadArrey;
//analyze payload
Packet p;
if( p.fromPayload(payloadArrey)){
switch(p.getType()){
case PTYPE_CMD:
processCMD(p);
break;
case PTYPE_DATA:
qDebug() << "\t Connection: Data from CMD link";
break;
default:
qDebug() << "\t Connection: Unknown packet type";
}
}
}
/*
use: process a list of commands
args: cmdList = root of command tree
return: status of last command executed
*/
int process(CMD *cmdList) {
pid_t pID; // process ID
int status; // status of process
// reap zombies
(void) signal(SIGINT, SIG_IGN);
while((pID = waitpid(-1, &status, WNOHANG)) > 0) {
status = (WIFEXITED(status) ? WEXITSTATUS(status) :
128+WTERMSIG(status));
fprintf(stderr, "Completed: %d (%d)\n", pID, status);
}
(void) signal(SIGINT, SIG_DFL);
// process commands
status = processCMD(cmdList);
// update status
return setStat(status);
}
int EclCMDShell::run()
{
if (!parseCommandLineOptions(args))
return 1;
if (!optIniFilename)
{
if (checkFileExists(INIFILE))
optIniFilename.set(INIFILE);
else
{
StringBuffer fn(SYSTEMCONFDIR);
fn.append(PATHSEPSTR).append(DEFAULTINIFILE);
if (checkFileExists(fn))
optIniFilename.set(fn);
}
}
globals.setown(createProperties(optIniFilename, true));
finalizeOptions(globals);
try
{
return processCMD(args);
}
catch (IException *E)
{
StringBuffer m("Error: ");
fputs(E->errorMessage(m).newline().str(), stderr);
E->Release();
return 2;
}
#ifndef _DEBUG
catch (...)
{
ERRLOG("Unexpected exception\n");
return 4;
}
#endif
return 0;
}
void udp_setup_thread_entry(void *p)
{
int sock;
int bytes_read;
struct sockaddr_in server_addr , client_addr;
int optval = 1;
fd_set readset;
/* create socket */
if ((sock = lwip_socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
{
rt_kprintf("Can not create udp setup socket.\n");
return;
}
lwip_setsockopt(sock,SOL_SOCKET,SO_BROADCAST,&optval ,sizeof(optval));
/* init server socket address */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(SETUP_UDP_PORT);
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
rt_memset(&(server_addr.sin_zero),0, sizeof(server_addr.sin_zero));
if (lwip_bind(sock,(struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) == -1)
{
rt_kprintf("Bind error\n");
return;
}
rt_kprintf("UDPServer Waiting for client on port %d \n",SETUP_UDP_PORT);
while (1)
{
int bytes_ret;
rt_uint32_t addr_len = sizeof(struct sockaddr_in);
FD_ZERO(&readset);
FD_SET(sock, &readset);
if( lwip_select(sock+1, &readset, 0, 0, 0) == 0 )
continue;
rt_mutex_take(&setup_data_buf_mutex,RT_WAITING_FOREVER);
bytes_read = lwip_recvfrom(sock, setup_data_buf, DATA_BUF_SIZE, MSG_DONTWAIT,
(struct sockaddr *)&client_addr, &addr_len);
rt_mutex_release(&setup_data_buf_mutex);
if( bytes_read < 0 )
{
continue;
}
rt_mutex_take(&setup_data_buf_mutex,RT_WAITING_FOREVER);
setup_data_buf[bytes_read] = 0;
bytes_ret = processCMD(setup_data_buf,bytes_read);
rt_mutex_release(&setup_data_buf_mutex);
if( bytes_ret > 0 )
{
// command execute success, send reply in buffer.
client_addr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
rt_mutex_take(&setup_data_buf_mutex,RT_WAITING_FOREVER);
lwip_sendto(sock,setup_data_buf,bytes_ret,0,(struct sockaddr*)&client_addr, sizeof(struct sockaddr));
rt_mutex_release(&setup_data_buf_mutex);
}
}
// Should not reach here!.
}
void tcp_setup_thread_entry(void *p)
{
int listenfd;
struct sockaddr_in saddr;
fd_set readset;
listenfd = lwip_socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if( listenfd == -1 )
{
rt_kprintf("TCP setup can not create socket!\n");
return;
}
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
saddr.sin_port = htons(SETUP_TCP_PORT);
if( lwip_bind(listenfd, (struct sockaddr *)&saddr, sizeof(saddr)) == -1 )
{
lwip_close(listenfd);
rt_kprintf("TCP setup thread socket bind failed!\n");
return;
}
/* Put socket into listening mode */
if (lwip_listen(listenfd,2) == -1)
{
lwip_close(listenfd);
rt_kprintf("Listen failed.\n");
return;
}
/* Wait for data or a new connection */
while(1)
{
/* Determine what sockets need to be in readset */
FD_ZERO(&readset);
FD_SET(listenfd, &readset);
// wait forever.
if( lwip_select(listenfd+1, &readset, 0, 0, 0) == 0 )
continue;
if (FD_ISSET(listenfd, &readset))
{
int ret,optval = 1;
struct sockaddr_in addrin;
u32_t sockaddrLen = sizeof(addrin);
int socket = lwip_accept(listenfd,(struct sockaddr*)&addrin,&sockaddrLen);
if( socket < 0 ) // accept failed.
{
rt_kprintf("TCP setup accept failed.\n");
continue;
}
rt_kprintf("TCP setup accept connection.\n");
// set socket keep alive.
lwip_setsockopt(socket,SOL_SOCKET,SO_KEEPALIVE,&optval ,sizeof(optval));
// begin to recv & send.
while(1)
{
int dataLen,bytesRet;
ret = blocking_lwip_recv(socket,setup_data_buf,P2X_HEADER_LEN,500);
if( ret == 0 )
continue;
if( ret != P2X_HEADER_LEN )
break;
dataLen = P2X_GET_LENGTH(setup_data_buf);
if( dataLen > 0 )
{
int gotDataLen = blocking_lwip_recv(socket,setup_data_buf+P2X_HEADER_LEN,dataLen,500);
if( gotDataLen != dataLen )
break;
}
bytesRet = processCMD(setup_data_buf,P2X_HEADER_LEN+dataLen);
if( lwip_send(socket,setup_data_buf,bytesRet,0) < 0 )
break;
}
rt_kprintf("TCP setup disconnected.\n");
lwip_close(socket);
}
}// while(1) listen.
}
