int read_and_exec(int socket) {
struct buf_t* buf = buf_new(8049);
int pos = buf_readuntil(socket, buf, '\n');
if (pos == -2)
return 0;
char* buffer = buf->data;
buffer[pos] = '\0';
struct execargs_t* arguments[1024];
int k = 0;
while (1) {
char delim;
int argc = count_words(buffer, '|');
if (argc == 0)
break;
char* argv[argc];
int shift;
int i = 0;
for (i = 0; i < argc; i++) {
delim = '|';
argv[i] = get_word(buffer, &delim, &shift);
buffer += shift;
}
arguments[k] = (struct execargs_t*) malloc(sizeof(struct execargs_t));
*arguments[k] = new_args(argc, argv);
shift = get_delim(buffer, '|');
buffer+=shift;
k++;
}
buf->size -= (buffer - (char*) buf->data + 1);
runpiped(arguments, k, socket);
buf_free(buf);
return 0;
}
int main()
{
int exit_code = EXIT_SUCCESS;
struct buf_t* buf = buf_new(MAX_SIZE);
char s[MAX_SIZE + 1];
if (print_prompt() < 0) {
QUIT(EXIT_FAILURE);
}
ssize_t size;
while ((size = buf_getline(STDOUT_FILENO,
buf,
s,
MAX_SIZE))) {
if (size < 0) {
QUIT(EXIT_FAILURE);
}
s[size] = 0;
char** piped_programs = split(s, '|', 0);
if (!piped_programs) {
goto ERROR;
}
char** p;
for (p = piped_programs; *p; p++)
;
int len = p - piped_programs;
execargs_t** programs = malloc(len * sizeof(execargs_t*));
if (!programs) {
for (char** p = piped_programs; *p; p++) {
free(*p);
}
free(piped_programs);
goto ERROR;
}
for (int i = 0; i < len; i++) {
programs[i] = execargs_parse(piped_programs[i]);
if (!programs[i]) {
for (int j = 0; j < i; j++) {
free(programs[j]);
}
for (int j = 0; j < len; j++) {
free(piped_programs[j]);
}
free(programs);
free(piped_programs);
goto ERROR;
}
}
if (runpiped(programs, len) < 0) {
goto ERROR;
}
if (print_prompt() < 0) {
QUIT(EXIT_FAILURE);
}
continue;
ERROR:
if (print_prompt() < 0) {
QUIT(EXIT_FAILURE);
}
}
EXIT:
buf_free(buf);
return exit_code;
}
