Function exec_sync

modules/exec/exec.c:93–169

}

int exec_sync(struct sip_msg* msg, str* command, str* input,
		pv_spec_t *outvar, pv_spec_t *errvar)
{

	pid_t pid;
	int ret = -1;
	FILE *pin = NULL, *pout, *perr;

	if ((input && input->len && input->s) || outvar || errvar) {
		pid =  __popen3(command->s, (input&&input->len&&input->s) ? &pin : NULL,
									outvar ? &pout : NULL,
									errvar ? &perr : NULL);
	} else {
		pid = fork();
		if (pid == 0) {
			close_open_fds();
			execl("/bin/sh", "/bin/sh", "-c", command->s, NULL);
			exit(-1);
		} else if (pid < 0) {
			LM_ERR("fork failed\n");
			return -1;
		}
	}

	if (input && input->len && pin) {
		if (fwrite(input->s, 1, input->len, pin) != input->len) {
			LM_ERR("failed to write to pipe\n");
			ser_error=E_EXEC;
			goto error;
		}

		if (ferror(pin)) {
			ser_error=E_EXEC;
			goto error;
		}

		fclose(pin);
	}

	schedule_to_kill(pid);

	if (outvar) {
		if (read_and_write2var(msg, &pout, outvar) < 0) {
			LM_ERR("failed reading stdout from pipe\n");
			goto error;
		}
	}

	if (errvar) {
		if (read_and_write2var(msg, &perr, errvar) < 0) {
			LM_ERR("failed reading stderr from pipe\n");
			goto error;
		}
	}

	ret=1;

error: