diff options
| -rw-r--r-- | include/applets.h | 1 | ||||
| -rw-r--r-- | include/libbb.h | 1 | ||||
| -rw-r--r-- | include/usage.h | 9 | ||||
| -rw-r--r-- | libbb/Kbuild | 1 | ||||
| -rw-r--r-- | miscutils/Config.in | 6 | ||||
| -rw-r--r-- | networking/telnetd.c | 47 | ||||
| -rw-r--r-- | util-linux/Kbuild | 1 | ||||
| -rw-r--r-- | util-linux/script.c | 195 |
8 files changed, 214 insertions, 47 deletions
diff --git a/include/applets.h b/include/applets.h index b2e89ee85..d4b6dbeaa 100644 --- a/include/applets.h +++ b/include/applets.h @@ -305,6 +305,7 @@ USE_RUNLEVEL(APPLET(runlevel, _BB_DIR_SBIN, _BB_SUID_NEVER)) USE_RUNSV(APPLET(runsv, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_RUNSVDIR(APPLET(runsvdir, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_RX(APPLET(rx, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) +USE_SCRIPT(APPLET(script, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_SED(APPLET(sed, _BB_DIR_BIN, _BB_SUID_NEVER)) USE_SELINUXENABLED(APPLET(selinuxenabled, _BB_DIR_USR_SBIN, _BB_SUID_NEVER)) USE_SENDMAIL(APPLET_ODDNAME(sendmail, sendgetmail, _BB_DIR_USR_BIN, _BB_SUID_NEVER, sendmail)) diff --git a/include/libbb.h b/include/libbb.h index 978cd2d87..707e8d69b 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -237,6 +237,7 @@ extern int recursive_action(const char *fileName, unsigned flags, int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), void* userData, unsigned depth); extern int device_open(const char *device, int mode); +extern int getpty(char *line, int size); extern int get_console_fd(void); extern char *find_block_device(const char *path); /* bb_copyfd_XX print read/write errors and return -1 if they occur */ diff --git a/include/usage.h b/include/usage.h index 95cb69c73..4eac17401 100644 --- a/include/usage.h +++ b/include/usage.h @@ -3234,6 +3234,15 @@ USE_FEATURE_RUN_PARTS_FANCY("\n -l Prints names of all matching files even when #define rx_example_usage \ "$ rx /tmp/foo\n" +#define script_trivial_usage \ + "[-afq] [-c COMMAND] [OUTFILE]" +#define script_full_usage \ + "Options:" \ + "\n -a Append output" \ + "\n -c Run COMMAND, not shell" \ + "\n -f Flush output after each write" \ + "\n -q Quiet" + #define sed_trivial_usage \ "[-efinr] pattern [files...]" #define sed_full_usage \ diff --git a/libbb/Kbuild b/libbb/Kbuild index aab016e85..fc87f625b 100644 --- a/libbb/Kbuild +++ b/libbb/Kbuild @@ -39,6 +39,7 @@ lib-y += get_console.o lib-y += get_last_path_component.o lib-y += get_line_from_file.o lib-y += getopt32.o +lib-y += getpty.o lib-y += herror_msg.o lib-y += herror_msg_and_die.o lib-y += human_readable.o diff --git a/miscutils/Config.in b/miscutils/Config.in index 73c765f2c..ac1e2b57c 100644 --- a/miscutils/Config.in +++ b/miscutils/Config.in @@ -410,6 +410,12 @@ config RX help Receive files using the Xmodem protocol. +config SCRIPT + bool "script" + default n + help + The script makes typescript of terminal session. + config STRINGS bool "strings" default n diff --git a/networking/telnetd.c b/networking/telnetd.c index 0bffa9700..05de49e8a 100644 --- a/networking/telnetd.c +++ b/networking/telnetd.c @@ -153,53 +153,6 @@ remove_iacs(struct tsession *ts, int *pnum_totty) } -static int -getpty(char *line, int size) -{ - int p; -#if ENABLE_FEATURE_DEVPTS - p = open("/dev/ptmx", O_RDWR); - if (p > 0) { - const char *name; - grantpt(p); - unlockpt(p); - name = ptsname(p); - if (!name) { - bb_perror_msg("ptsname error (is /dev/pts mounted?)"); - return -1; - } - safe_strncpy(line, name, size); - return p; - } -#else - struct stat stb; - int i; - int j; - - strcpy(line, "/dev/ptyXX"); - - for (i = 0; i < 16; i++) { - line[8] = "pqrstuvwxyzabcde"[i]; - line[9] = '0'; - if (stat(line, &stb) < 0) { - continue; - } - for (j = 0; j < 16; j++) { - line[9] = j < 10 ? j + '0' : j - 10 + 'a'; - if (DEBUG) - fprintf(stderr, "Trying to open device: %s\n", line); - p = open(line, O_RDWR | O_NOCTTY); - if (p >= 0) { - line[5] = 't'; - return p; - } - } - } -#endif /* FEATURE_DEVPTS */ - return -1; -} - - static struct tsession * make_new_session( USE_FEATURE_TELNETD_STANDALONE(int sock) diff --git a/util-linux/Kbuild b/util-linux/Kbuild index c71186e86..0f33c6be2 100644 --- a/util-linux/Kbuild +++ b/util-linux/Kbuild @@ -28,6 +28,7 @@ lib-$(CONFIG_PIVOT_ROOT) +=pivot_root.o lib-$(CONFIG_RDATE) +=rdate.o lib-$(CONFIG_READPROFILE) +=readprofile.o lib-$(CONFIG_RTCWAKE) +=rtcwake.o +lib-$(CONFIG_SCRIPT) +=script.o lib-$(CONFIG_SETARCH) +=setarch.o lib-$(CONFIG_SWAPONOFF) +=swaponoff.o lib-$(CONFIG_SWITCH_ROOT) +=switch_root.o diff --git a/util-linux/script.c b/util-linux/script.c new file mode 100644 index 000000000..fda726ed9 --- /dev/null +++ b/util-linux/script.c @@ -0,0 +1,195 @@ +/* vi: set sw=4 ts=4: */ +/* + * script implementation for busybox + * + * pascal.bellard@ads-lu.com + * + * Based on code from util-linux v 2.12r + * Copyright (c) 1980 + * The Regents of the University of California. All rights reserved. + * + * Licensed under GPLv2 or later, see file License in this tarball for details. + */ + +#include "libbb.h" + +struct globals { + int child_pid; + int attr_ok; /* NB: 0: ok */ + struct termios tt; + const char *fname; +}; +#define G (*ptr_to_globals) +#define child_pid (G.child_pid) +#define attr_ok (G.attr_ok ) +#define tt (G.tt ) +#define fname (G.fname ) +#define INIT_G() do { \ + PTR_TO_GLOBALS = xzalloc(sizeof(G)); \ + fname = "typescript"; \ +} while (0) + +static void done(void) +{ + if (child_pid) { /* we are parent */ + if (attr_ok == 0) + tcsetattr(0, TCSAFLUSH, &tt); + if (!(option_mask32 & 8)) /* not -q */ + printf("Script done, file is %s\n", fname); + } + exit(0); +} + +#ifdef UNUSED +static void handle_sigchld(int sig) +{ + /* wait for the exited child and exit */ + while (wait_any_nohang(&sig) > 0) + continue; + done(); +} +#endif + +#if ENABLE_GETOPT_LONG +static const char getopt_longopts[] ALIGN1 = + "append\0" No_argument "a" + "command\0" Required_argument "c" + "flush\0" No_argument "f" + "quiet\0" No_argument "q" + ; +#endif + +int script_main(int argc, char *argv[]) MAIN_EXTERNALLY_VISIBLE; +int script_main(int argc, char *argv[]) +{ + int opt, pty; + int winsz_ok; + int mode; + struct termios rtt; + struct winsize win; + char line[32]; + const char *shell; + char shell_opt[] = "-i"; + char *shell_arg = NULL; + + INIT_G(); +#if ENABLE_GETOPT_LONG + applet_long_options = getopt_longopts; +#endif + opt_complementary = "?1"; /* max one arg */ + opt = getopt32(argv, "ac:fq", &shell_arg); + //argc -= optind; + argv += optind; + if (argv[0]) { + fname = argv[0]; + } + mode = O_CREAT|O_TRUNC|O_WRONLY; + if (opt & 1) { + mode = O_CREAT|O_APPEND|O_WRONLY; + } + if (opt & 2) { + shell_opt[1] = 'c'; + } + if (!(opt & 8)) { /* not -q */ + printf("Script started, file is %s\n", fname); + } + shell = getenv("SHELL"); + if (shell == NULL) { + shell = _PATH_BSHELL; + } + + pty = getpty(line, sizeof(line)); + if (pty < 0) { + bb_perror_msg_and_die("can't get pty"); + } + + /* get current stdin's tty params */ + attr_ok = tcgetattr(0, &tt); + winsz_ok = ioctl(0, TIOCGWINSZ, (char *)&win); + + rtt = tt; + cfmakeraw(&rtt); + rtt.c_lflag &= ~ECHO; + tcsetattr(0, TCSAFLUSH, &rtt); + + /* We exit as soon as child exits */ + //signal(SIGCHLD, handle_sigchld); + signal(SIGCHLD, (void (*)(int)) done); + + child_pid = vfork(); + if (child_pid < 0) { + bb_perror_msg_and_die("vfork"); + } + + if (child_pid) { + /* parent */ + char buf[256]; + struct pollfd pfd[2]; + int outfd; + int fd_count = 2; + struct pollfd *ppfd = pfd; + + outfd = xopen(fname, mode); + pfd[0].fd = 0; + pfd[0].events = POLLIN; + pfd[1].fd = pty; + pfd[1].events = POLLIN; + ndelay_on(pty); /* this descriptor is not shared, can do this */ + /* ndelay_on(0); - NO, stdin can be shared! */ + + /* copy stdin to pty master input, + * copy pty master output to stdout and file */ + /* TODO: don't use full_write's, use proper write buffering */ + while (fd_count && safe_poll(ppfd, fd_count, -1) > 0) { + if (pfd[0].revents) { + int count = safe_read(0, buf, sizeof(buf)); + if (count <= 0) { + /* err/eof: don't read anymore */ + pfd[0].revents = 0; + ppfd++; + fd_count--; + } else { + full_write(pty, buf, count); + } + } + if (pfd[1].revents) { + int count; + errno = 0; + count = safe_read(pty, buf, sizeof(buf)); + if (count <= 0 && errno != EAGAIN) { + /* err/eof: don't read anymore */ + pfd[1].revents = 0; + fd_count--; + } + if (count > 0) { + full_write(1, buf, count); + full_write(outfd, buf, count); + if (opt & 4) { /* -f */ + fsync(outfd); + } + } + } + } + done(); /* does not return */ + } + + /* child: make pty slave to be input, output, error; run shell */ + close(pty); /* close pty master */ + /* open pty slave to fd 0,1,2 */ + close(0); + xopen(line, O_RDWR); /* uses fd 0 */ + xdup2(0, 1); + xdup2(0, 2); + /* copy our original stdin tty's parameters to pty */ + if (attr_ok == 0) + tcsetattr(0, TCSAFLUSH, &tt); + if (winsz_ok == 0) + ioctl(0, TIOCSWINSZ, (char *)&win); + /* set pty as a controlling tty */ + setsid(); + ioctl(0, TIOCSCTTY, 0 /* 0: don't forcibly steal */); + + /* signal(SIGCHLD, SIG_DFL); - exec does this for us */ + execl(shell, shell, shell_opt, shell_arg, NULL); + bb_simple_perror_msg_and_die(shell); +} |