void Router::displayMenu(int position)
{
std::cout << "----- " << this->getTitle() << "----- " << std::endl;
int size = items.size();
for (int i = 0; i < size; i++)
std::cout << ((position == i) ? "> " : " ") << items[i].getTitle() << std::endl;
if (parent != NULL)
std::cout << (is_back(position) ? "> " : " ") << "Back." << std::endl;
std::cout << (is_exit(position) ? "> " : " ") << "Exit program." << std::endl;
}
void Router::setActive(int* position)
{
if (is_exit(*position))
exit(0);
if (is_back(*position)){
if (parent != NULL)
parent->navigate();
*position = 0;
return;
}
Router* router = &(items[*position]);
router->run();
*position = 0;
router->navigate();
}
void do_pipe(char * input)
{
int status,i,j,k,**fd,back=0,len;
char **command;
int *child;
back=is_back(input);
len=strlen(input);
k=pipe_number(input);
command=(char **)malloc((k+1)*sizeof(char *));
for(i=0;i<k+1;i++)
command[i]=(char *)malloc((len+1)*sizeof(char));
child=(int *)malloc((k+1)*sizeof(char *));
fd=(int **)malloc(k*sizeof(int *));
for(i=0;i<k;i++)
fd[i]=(int *)malloc(2*sizeof(int));
k=0;
j=0;
for (i=0;i<=len;i++)
{
if (input[i]!='|')
{
command[k][j]=input[i];
j++;
}
else
{
command[k][j]='\0';
k++;
j=0;
}
}
//create the pipe
for(i=0;i<k;i++)
if(pipe(fd[i]) == -1)
{
fprintf(stderr, "Open pipe error !\n");
//printf("Open pipe error !\n");
//return 0;
}
//create the first child
i=0;
if((child[i]=fork())==0)
{
close(fd[i][0]);
if(fd[i][1] != STDOUT_FILENO)
{
if(dup2(fd[i][1], STDOUT_FILENO) == -1)
{
fprintf(stderr, "Redirect Standard Out error !\n");
//printf("Redirect Standard Out error !\n");
//return -1;
}
close(fd[i][1]);
}
redirect(command[i]);
exit(1); //child1 exit
}
else
{
//wait for child
waitpid(child[i],&status,0);
close(fd[i][1]);
}
i++;
while(i<k)
{
if ((child[i]=fork())==0)
{
if(fd[i][0] != STDIN_FILENO)
{
if(dup2(fd[i-1][0], STDIN_FILENO) == -1)
{
fprintf(stderr, "Redirect Standard In error !\n");
//printf("Redirect Standard In Error !\n");
//return -1;
}
close(fd[i-1][0]);
if(dup2(fd[i][1], STDOUT_FILENO) == -1)
{
fprintf(stderr, "Redirect Standard Out error !\n");
//printf("Redirect Standard Out error !\n");
//return -1;
}
close(fd[i][1]);
}
redirect(command[i]);
exit(1);
}
else
{
//wait for child
waitpid(child[i],&status,0);
close(fd[i][1]);
i++;
}
}
//create the last child
if((child[i] = fork()) == 0)
{
close(fd[i-1][1]);
if(fd[i-1][0] != STDIN_FILENO)
{
if(dup2(fd[i-1][0], STDIN_FILENO) == -1)
{
fprintf(stderr, "Redirect Standard In error !\n");
//printf("Redirect Standard In Error !\n");
//return -1;
}
close(fd[i-1][0]);
}
redirect(command[i]);
exit(1);
}
else
{
if(back==0)
{
waitpid(child[i], NULL, 0);
close(fd[i-1][1]);
}
}
for(i=0;i<k;i++)
free(fd[i]);
free(fd);
for(i=0;i<k+1;i++)
free(command[i]);
free(command);
free(child);
}
int do_redirection(char *input) //redircetion
{
char *command_path,*real_command;
char *out_filename,*in_filename;
char **parsed_command;
int len,status,i,j,k,back=0,fd_out,fd_in,flag_out=0,flag_in=0;
pid_t pid;
back=is_back(input);
len=strlen(input);
out_filename=(char *)malloc((len+1)*(sizeof(char)));
in_filename=(char *)malloc((len+1)*(sizeof(char)));
real_command=(char *)malloc((len+1)*(sizeof(char)));
for(i=0;i<len;i++){
if ((input[i]!='>') && (input[i]!='<'))
real_command[i]=input[i];
else{
if (input[i]=='>')
flag_out=1;
if (input[i]=='<')
flag_in=1;
break;
}
}
real_command[i]='\0';
i++;
if(flag_out==1 && input[i]=='>')
{
flag_out=2;
i++;
}
else if (flag_in==1 && input[i]=='<')
{
flag_in=2;
i++;
}
while ((input[i]==' '||input[i]==' ') && i<len)
i++;
j=0;
out_filename[0]='\0';
in_filename[0]='\0';
if(flag_out>0){
while (i<=len){
if(input[i]=='<'){
out_filename[j]='\0';
break;
}
out_filename[j]=input[i];
i++;
j++;
}
}
if(flag_in>0){
while (i<=len){
if (input[i]=='>'){
in_filename[j]='\0';
break;
}
in_filename[j]=input[i];
i++;
j++;
}
}
if (i<len){
j=0;
if (flag_out>0 && input[i]=='<'){
i++;
flag_in=1;
if(input[i]=='>'){
flag_in=2;
i++;
}
while ((input[i]==' ' || input[i]==' ') && i<len)
i++;
while (i<=len){
in_filename[j]=input[i];
i++;
j++;
}
}
else if (flag_in>0 && input[i]=='>'){
i++;
flag_out=1;
if(input[i]=='>'){
flag_out=2;
i++;
}
while ((input[i]==' ' || input[i]==' ') && i<len)
i++;
while (i<=len){
out_filename[j]=input[i];
i++;
j++;
}
}
else{
fprintf(stderr,"ERROR! Invalid file name!\n");
return -1;
}
}
k=number(real_command);
parsed_command=parse(real_command);
if(!find_command(real_command)){
fprintf(stderr, "%s: Command not found.\n", real_command);
return -1;
}
if(strcmp(parsed_command[0], "time") == 0)
{
clock();
Do_time(real_command);
}
if(strcmp(parsed_command[0], "cd") == 0) //cd
{
Do_cd(parsed_command[1]);
}
if(strcmp(parsed_command[0], "echo") == 0) //echo
{
Do_echo(real_command);
}
if(strcmp(parsed_command[0], "viewproc") == 0) //viewproc
{
Do_viewproc(real_command);
}
if(strcmp(parsed_command[0], "ls") == 0){
Do_ls();
}
if(strcmp(parsed_command[0], "grep") == 0){
Do_grep(parsed_command[1], parsed_command[2]);
}
if(strcmp(parsed_command[0], "mkdir") == 0){
Do_mkdir(parsed_command[1]);
}
if((pid = fork()) == 0) {
if(flag_out==1)
fd_out = open(out_filename,O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR );
if(flag_out==2)
fd_out = open(out_filename, O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR );
if(flag_in==1)
fd_in = open(in_filename, O_RDONLY, S_IRUSR|S_IWUSR );
if(flag_in==2)
fd_in = open(in_filename, O_RDONLY, S_IRUSR|S_IWUSR );
if(fd_out==-1) {
printf("Open out %s error \n", out_filename);
return -1;
}
if(fd_in==-1) {
fprintf(stderr,"Open in %s error \n", in_filename);
return -1;
}
if(flag_out>0){
if(dup2(fd_out, STDOUT_FILENO) == -1){
fprintf(stderr,"Redirect Standard Out Error !\n");
exit(1);
}
}
if(flag_in>0){
if (dup2(fd_in,STDIN_FILENO)==-1){
fprintf(stderr,"Redirect Standard Out Error !\n");
exit(1);
}
}
execv(command_path,parsed_command); // CANT DO THIS FUNCTION !
exit(1);
}
else{ //parent
if(back==0)
pid = waitpid(pid, &status, 0);
else
pid = waitpid(pid, &status, WNOHANG);
}
//free space;
/*free(out_filename);
free(in_filename);
free(command_path);
for(i=0;i<k;i++)
free(parsed_command[i]);
free(parsed_command);
*/
return 1;
}
int do_redirection(char *input) //redircetion
{
char *command_path,*real_command;
char *out_filename,*in_filename;
char **parsed_command;
int len,status,i,j,k,back=0,fd_out=0,fd_in=0,flag_out=0,flag_in=0;
pid_t pid;
back=is_back(input);
len=strlen(input);
out_filename=(char *)malloc((len+1)*(sizeof(char)));
in_filename=(char *)malloc((len+1)*(sizeof(char)));
real_command=(char *)malloc((len+1)*(sizeof(char)));
for(i=0; i<len; i++)
{
if (input[i]!='>' && input[i]!='<')
real_command[i]=input[i];
else
{
if (input[i]=='>')
flag_out=1;
if (input[i]=='<')
flag_in=1;
break;
}
}
real_command[i]='\0';
i++;
if(flag_out==1 && input[i]=='>')
{
flag_out=2;
i++;
}
else if (flag_in==1 && input[i]=='<')
{
flag_in=2;
i++;
}
while ((input[i]==' ' || input[i]==' ') && i<len)
i++;
j=0;
out_filename[0]='\0';
in_filename[0]='\0';
if(flag_out>0)
{
while (i<=len)
{
if(input[i]=='<')
{
out_filename[j]='\0';
break;
}
out_filename[j]=input[i];
i++;
j++;
}
}
if(flag_in>0)
{
while (i<=len)
{
if (input[i]=='>')
{
in_filename[j]='\0';
break;
}
in_filename[j]=input[i];
i++;
j++;
}
}
if (i<len)
{
j=0;
if (flag_out>0 && input[i]=='<')
{
i++;
flag_in=1;
if(input[i]=='>')
{
flag_in=2;
i++;
}
while ((input[i]==' ' || input[i]==' ') && i<len)
i++;
while (i<=len)
{
in_filename[j]=input[i];
i++;
j++;
}
}
else if (flag_in>0 && input[i]=='>')
{
i++;
flag_out=1;
if(input[i]=='>')
{
flag_out=2;
i++;
}
while ((input[i]==' ' || input[i]==' ') && i<len)
i++;
while (i<=len)
{
out_filename[j]=input[i];
i++;
j++;
}
}
else
{
fprintf(stderr,"ERROR!can't find the file!\n");
return -1;
}
}
//for debug
/*printf("real_command: %s\n",real_command);
printf("out_filename: %s\n",out_filename);
printf("in_filename: %s\n",in_filename);*/
k=number(real_command);
parsed_command=parse(real_command);
if(strcmp(parsed_command[0],"cd")==0 || strcmp(parsed_command[0], "echo") == 0 || strcmp(parsed_command[0], "viewproc") == 0 || strcmp(parsed_command[0], "time")==0) //build-in functions
{
if(strcmp(parsed_command[0], "cd") == 0) //cd
{
do_cd(parsed_command);
}
else if(strcmp(parsed_command[0], "echo") == 0) //echo
{
if (pid=fork() == 0)
{
if(flag_out==1)
fd_out = open(out_filename,O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR );
if(flag_out==2)
fd_out = open(out_filename, O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR );
if(fd_out==-1)
{
printf("Open out %s error \n", out_filename);
return -1;
}
if(flag_out>0)
{
if(dup2(fd_out, STDOUT_FILENO) == -1)
{
fprintf(stderr,"Redirect Standard Out Error !\n");
exit(1);
}
}
do_echo(real_command);
exit(1);
}
else
{ //parent
if(back==0)
pid=waitpid(pid, &status, 0);
else
pid=waitpid(pid, &status, WNOHANG);
}
}
else if(strcmp(parsed_command[0], "viewproc") == 0) //viewproc
{
if (pid=fork() == 0)
{
if(flag_out==1)
fd_out = open(out_filename,O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR );
if(flag_out==2)
fd_out = open(out_filename, O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR );
if(fd_out==-1)
{
printf("Open out %s error \n", out_filename);
return -1;
}
if(flag_out>0)
{
if(dup2(fd_out, STDOUT_FILENO) == -1)
{
fprintf(stderr,"Redirect Standard Out Error !\n");
exit(1);
}
}
do_viewproc(parsed_command[1]);
close(flag_out);
exit(1);
}
else
{ //parent
if(back==0)
pid=waitpid(pid, &status, 0);
else
pid=waitpid(pid, &status, WNOHANG);
}
}
else if(strcmp(parsed_command[0], "time") == 0) //time
{
gettimeofday(&tpstart,0);
do_time(real_command);
}
for(i=0;i<k;i++)
free(parsed_command[i]);
free(parsed_command);
free(real_command);
return 1;
}
command_path=is_file_exist(parsed_command[0]);
if(command_path==NULL) //can't find the order
{
fprintf(stderr,"This is command is not founded ?!\n");
// free space
for(i=0;i<k;i++)
free(parsed_command[i]);
free(parsed_command);
free(real_command);
return -1;
}
if((pid = fork()) == 0)
{
if(flag_out==1)
fd_out = open(out_filename,O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR );
if(flag_out==2)
fd_out = open(out_filename, O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR );
if(flag_in==1)
fd_in = open(in_filename, O_RDONLY, S_IRUSR|S_IWUSR );
if(flag_in==2)
fd_in = open(in_filename, O_RDONLY, S_IRUSR|S_IWUSR );
if(fd_out==-1)
{
printf("Open out %s error \n", out_filename);
return -1;
}
if(fd_in==-1)
{
fprintf(stderr,"Open in %s error \n", in_filename);
return -1;
}
if(flag_out>0)
{
if(dup2(fd_out, STDOUT_FILENO) == -1)
{
fprintf(stderr,"Redirect Standard Out Error !\n");
exit(1);
}
}
if(flag_in>0)
{
if (dup2(fd_in,STDIN_FILENO)==-1)
{
fprintf(stderr,"Redirect Standard Out Error !\n");
exit(1);
}
}
execv(command_path,parsed_command);
exit(1);
}
else
{ //parent
if(back==0)
pid=waitpid(pid, &status, 0);
else
pid=waitpid(pid, &status, WNOHANG);
}
//free space
free(out_filename);
free(in_filename);
free(command_path);
for(i=0;i<k;i++)
free(parsed_command[i]);
free(parsed_command);
return 1;
}
