void Executor::execute(CmdInfoPtr cmdInfo)
{
int res = 0;
int pipefd[2];
if (cmdInfo->isPipe) {
res = pipe(pipefd);
procError(res, "pipe", true);
pid_t pipedProc = fork();
procError(pipedProc, "fork", true);
if(pipedProc == 0) {
res = close(pipefd[0]);
procError(res, "close", true);
res = dup2(pipefd[1], 1);
res = close(pipefd[1]);
procError(res, "dup", true);
execute(cmdInfo->pipeCmd);
exit(EXIT_SUCCESS);
} else {
res = close(pipefd[1]);
procError(res, "close", true);
res = dup2(pipefd[0], 0);
res = close(pipefd[0]);
procError(res, "dup", true);
}
}
switch(cmdInfo->cmdType) {
case CmdInfo::C_LS : execLs(cmdInfo);
break;
case CmdInfo::C_PWD : execPwd(cmdInfo);
break;
case CmdInfo::C_PS : execPs();
break;
case CmdInfo::C_PROG : {
std::vector<char*> argv;
cmdInfo->getArgs(argv);
res = execv(cmdInfo->command.c_str(), &argv[0]);
if (res == -1) {
std::string path = "/bin/";
path += cmdInfo->command;
res = execv(path.c_str(), &argv[0]);
}
procError(res, "cli", true);
break;
}
default : return;
}
}
int startService(){
if (login() == -1) return -1;
printf("IN COMMNAND SESSION\n");
char buf[BUFFER_SIZE];
while (1) {
memset(buf, 0, sizeof(buf));
if (recv(recvfd, buf, BUFFER_SIZE, 0) <= 0){
printf("Receive erro:%s(errno:%d)\n", strerror(errno), errno);
return -1;
}
printf("COMMAND[%s]\n",buf);
if (strcmp(buf, "get") == 0){
recv(recvfd, buf, BUFFER_SIZE, 0);
execGet(buf);
continue;
}
if (strcmp(buf, "put") == 0) {
recv(recvfd, buf, BUFFER_SIZE, 0);
execPut(buf);
continue;
}
if (strcmp(buf, "quit") == 0) {
execQuit();
printf("COMMAND SESSION OVER!\n");
return 0;
}
if (strcmp(buf, "dir") == 0) {
execDir();
continue;
}
if (strcmp(buf, "cd") == 0) {
recv(recvfd, buf, BUFFER_SIZE, 0);
execCd(buf);
continue;
}
if (strcmp(buf, "pwd") == 0) {
execPwd();
continue;
}
printf("Command Error!\n");
}
return 0;
}
