*
* Based on code from util-linux v 2.12r
* Copyright (c) 1980
- * The Regents of the University of California. All rights reserved.
+ * The Regents of the University of California. All rights reserved.
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config SCRIPT
+//config: bool "script (8 kb)"
+//config: default y
+//config: help
+//config: The script makes typescript of terminal session.
+
+//applet:IF_SCRIPT(APPLET(script, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_SCRIPT) += script.o
+
+//usage:#define script_trivial_usage
+//usage: "[-afq] [-t[FILE]] [-c PROG] [OUTFILE]"
+//usage:#define script_full_usage "\n\n"
+//usage: "Default OUTFILE is 'typescript'"
+//usage: "\n"
+//usage: "\n -a Append output"
+//usage: "\n -c PROG Run PROG, not shell"
+/* Accepted but has no effect (we never buffer output) */
+/*//usage: "\n -f Flush output after each write"*/
+//usage: "\n -q Quiet"
+//usage: "\n -t[FILE] Send timing to stderr or FILE"
+
+//util-linux-2.28:
+//-e: return exit code of the child
+
+//FYI (reported as bbox bug #2749):
+// > script -q -c 'echo -e -n "1\n2\n3\n"' /dev/null </dev/null >123.txt
+// > The output file on full-blown ubuntu system contains 6 bytes.
+// > Output on Busybox system (arm-linux) contains extra '\r' byte in each line.
+//however, in my test, "script" from util-linux-2.28 seems to also add '\r' bytes.
+
#include "libbb.h"
+#include "common_bufsiz.h"
int script_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int script_main(int argc UNUSED_PARAM, char **argv)
char pty_line[GETPTY_BUFSIZE];
struct termios tt, rtt;
struct winsize win;
+ FILE *timing_fp;
+ const char *str_t = NULL;
const char *fname = "typescript";
const char *shell;
char shell_opt[] = "-i";
};
#if ENABLE_LONG_OPTS
- static const char getopt_longopts[] ALIGN1 =
+ static const char script_longopts[] ALIGN1 =
"append\0" No_argument "a"
"command\0" Required_argument "c"
"flush\0" No_argument "f"
"quiet\0" No_argument "q"
- IF_SCRIPTREPLAY("timing\0" No_argument "t")
+ "timing\0" Optional_argument "t"
;
-
- applet_long_options = getopt_longopts;
#endif
- opt_complementary = "?1"; /* max one arg */
- opt = getopt32(argv, "ac:fq" IF_SCRIPTREPLAY("t") , &shell_arg);
+ opt = getopt32long(argv, "^" "ac:fqt::" "\0" "?1"/* max one arg */,
+ script_longopts,
+ &shell_arg, &str_t
+ );
//argc -= optind;
argv += optind;
if (argv[0]) {
if (!(opt & OPT_q)) {
printf("Script started, file is %s\n", fname);
}
- shell = getenv("SHELL");
- if (shell == NULL) {
- shell = DEFAULT_SHELL;
+ timing_fp = stderr;
+ if (str_t) {
+ timing_fp = xfopen_for_write(str_t);
}
+ shell = get_shell_name();
+
+ /* Some people run "script ... 0>&-".
+ * Our code assumes that STDIN_FILENO != pty.
+ * Ensure STDIN_FILENO is not closed:
+ */
+ bb_sanitize_stdio();
+
pty = xgetpty(pty_line);
/* get current stdin's tty params */
if (child_pid) {
/* parent */
-#define buf bb_common_bufsiz1
struct pollfd pfd[2];
int outfd, count, loop;
- double oldtime = ENABLE_SCRIPTREPLAY ? time(NULL) : 0;
+ double oldtime = time(NULL);
smallint fd_count = 2;
+#define buf bb_common_bufsiz1
+ setup_common_bufsiz();
+
outfd = xopen(fname, mode);
pfd[0].fd = pty;
pfd[0].events = POLLIN;
}
if (pfd[0].revents) {
errno = 0;
- count = safe_read(pty, buf, sizeof(buf));
+ count = safe_read(pty, buf, COMMON_BUFSIZE);
if (count <= 0 && errno != EAGAIN) {
/* err/eof from pty: exit */
goto restore;
}
if (count > 0) {
- if (ENABLE_SCRIPTREPLAY && (opt & OPT_t)) {
+ if (opt & OPT_t) {
struct timeval tv;
double newtime;
gettimeofday(&tv, NULL);
newtime = tv.tv_sec + (double) tv.tv_usec / 1000000;
- fprintf(stderr, "%f %u\n", newtime - oldtime, count);
+ fprintf(timing_fp, "%f %u\n", newtime - oldtime, count);
oldtime = newtime;
}
full_write(STDOUT_FILENO, buf, count);
full_write(outfd, buf, count);
- if (opt & OPT_f) {
- fsync(outfd);
- }
+ // If we'd be using (buffered) FILE i/o, we'd need this:
+ //if (opt & OPT_f) {
+ // fflush(outfd);
+ //}
}
}
if (pfd[1].revents) {
- count = safe_read(STDIN_FILENO, buf, sizeof(buf));
+ count = safe_read(STDIN_FILENO, buf, COMMON_BUFSIZE);
if (count <= 0) {
/* err/eof from stdin: don't read stdin anymore */
pfd[1].revents = 0;
* (util-linux's script doesn't do this. buggy :) */
loop = 999;
/* pty is in O_NONBLOCK mode, we exit as soon as buffer is empty */
- while (--loop && (count = safe_read(pty, buf, sizeof(buf))) > 0) {
+ while (--loop && (count = safe_read(pty, buf, COMMON_BUFSIZE)) > 0) {
full_write(STDOUT_FILENO, buf, count);
full_write(outfd, buf, count);
}
projects / oweals / busybox.git / blobdiff