apio
81e1fdf81e
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continuous-integration/drone/push Build is passing
Also, the console sends SIGINT to the foreground process group when ^C is pressed!
57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
#include <bits/termios.h>
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#include <luna/String.h>
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#include <os/ArgumentParser.h>
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#include <os/File.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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Result<int> luna_main(int argc, char** argv)
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{
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StringView username;
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os::ArgumentParser parser;
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parser.add_description("Begin a new session on the system.");
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parser.add_system_program_info("login"_sv);
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parser.add_positional_argument(username, "user", false);
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parser.parse(argc, argv);
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if (geteuid() != 0)
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{
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os::eprintln("error: login must be run as root.");
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return 1;
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}
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putchar('\n');
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String name;
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if (username.is_empty())
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{
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signal(SIGTTOU, SIG_IGN);
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if (isatty(STDIN_FILENO))
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{
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pid_t pgid = getpgid(0);
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ioctl(STDIN_FILENO, TIOCSPGRP, &pgid);
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}
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auto input = os::File::standard_input();
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os::print("Username: ");
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name = TRY(input->read_line());
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name.trim("\n");
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if (name.is_empty()) return 0;
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username = name.view();
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}
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execl("/bin/su", "login", "-lp", "--", username.chars(), nullptr);
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perror("su");
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return 1;
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}
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