mirror of
https://github.com/buserror/mii_emu.git
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95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
/*
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* mish_debug_test.c
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*
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* Copyright (C) 2020 Michel Pollet <buserror@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* NOTE this program is made for debug purpose only, it basically give you
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* telnet command access remotely
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* IT IS JUST MADE TO DEBUG LIBMISH, DO NOT USE IN PROD!
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*/
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#define _GNU_SOURCE // for asprintf
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include "mish.h"
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static void
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sigchld_handler(int s)
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{
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int status = 0;
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pid_t pid = waitpid(-1, &status, WNOHANG);
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if (pid > 0) {
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if (WIFEXITED(status) && WEXITSTATUS(status))
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fprintf(stderr, "pid %d returned %d\n", (int)pid, WEXITSTATUS(status));
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if (WIFSIGNALED(status))
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fprintf(stderr, "pid %d terminated with %s\n",
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(int)pid, strsignal(WTERMSIG(status)));
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}
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}
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int main()
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{
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signal(SIGCHLD, sigchld_handler);
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mish_prepare(0);
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while (1) {
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sleep(1);
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}
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}
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static const char *
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_shell_which(
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const char * cmd)
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{
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if (cmd[0] == '.' || cmd[0] == '/')
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return strdup(cmd);
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char * path = strdup(getenv("PATH"));
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char * cur = path, *e;
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while ((e = strsep(&cur, ":")) != NULL) {
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char *pe;
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asprintf(&pe, "%s/%s", e, cmd);
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struct stat st = {};
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if (stat(pe, &st) == 0) {
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return pe;
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}
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free(pe);
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}
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fprintf(stderr, "%s: command not found\n", cmd);
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return NULL;
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}
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static void
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_test_shell_cnt(
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void * param,
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int argc,
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const char * argv[])
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{
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const char * av[argc + 1];
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av[0] = _shell_which(argv[1]);
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if (av[0] == NULL)
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return;
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for (int ai = 1; ai <= argc; ai++)
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av[ai] = argv[ai+1];
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pid_t pid = fork();
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if (pid == 0) {
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execv(av[0], (void*)av);
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perror(av[0]);
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close(0);close(1);close(2);
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exit(1);
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}
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}
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MISH_CMD_NAMES(shell, "shell");
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MISH_CMD_HELP(shell,
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"run a shell command",
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"test command for libmish!");
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MISH_CMD_REGISTER(shell, _test_shell_cnt);
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