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// on my system, this program outputs: |
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// |
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// who; echo 'Hello, World!'; exit |
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// # root pts/9 Jan 25 12:12 (libptytty.example.net) |
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// Hello, World! |
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// |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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|
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#include <sys/types.h> |
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#include <unistd.h> |
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|
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#include <libptytty.h> |
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|
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int main (void) |
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{ |
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ptytty_init (); |
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|
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PTYTTY pty = ptytty_create (); |
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|
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if (!ptytty_get (pty)) |
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printf ("unable to open pty\n"), exit (EXIT_FAILURE); |
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|
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pid_t pid = fork (); |
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|
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if (pid < 0) |
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printf ("fork error\n"), exit (EXIT_FAILURE); |
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|
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int pty_fd = ptytty_pty (pty); |
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int tty_fd = ptytty_tty (pty); |
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|
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if (pid) |
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{ |
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ptytty_close_tty (pty); |
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ptytty_login (pty, pid, 1, "libptytty.example.net"); |
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|
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char s[] = "who; echo 'Hello, World!'; exit\015"; |
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|
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write (pty_fd, s, sizeof (s) - 1); |
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|
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char buf[1024]; |
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|
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for (;;) |
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{ |
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int len = read (pty_fd, buf, 1024); |
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|
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if (len <= 0) |
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break; |
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|
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write (STDOUT_FILENO, buf, len); |
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} |
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|
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ptytty_delete (pty); |
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} |
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else |
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{ |
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ptytty_make_controlling_tty (pty); |
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|
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close (pty_fd); |
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dup2 (tty_fd, STDIN_FILENO ); |
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dup2 (tty_fd, STDOUT_FILENO); |
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dup2 (tty_fd, STDERR_FILENO); |
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close (tty_fd); |
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|
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execl ("/bin/sh", "-sh", (char *)0); |
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_exit (EXIT_FAILURE); |
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} |
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|
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return EXIT_SUCCESS; |
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} |
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|
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