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script.c
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script.c
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/*
* Copyright (C) 1980 Regents of the University of California.
* Copyright (C) 2013-2019 Karel Zak <[email protected]>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <paths.h>
#include <time.h>
#include <sys/stat.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>
#include <locale.h>
#include <stddef.h>
#include <sys/wait.h>
#include <poll.h>
#include <sys/signalfd.h>
#include <assert.h>
#include <inttypes.h>
#include "closestream.h"
#include "nls.h"
#include "c.h"
#include "ttyutils.h"
#include "all-io.h"
#include "monotonic.h"
#include "timeutils.h"
#include "strutils.h"
#include "xalloc.h"
#include "optutils.h"
#include "signames.h"
#include "pty-session.h"
#include "debug.h"
static UL_DEBUG_DEFINE_MASK(script);
UL_DEBUG_DEFINE_MASKNAMES(script) = UL_DEBUG_EMPTY_MASKNAMES;
#define SCRIPT_DEBUG_INIT (1 << 1)
#define SCRIPT_DEBUG_PTY (1 << 2)
#define SCRIPT_DEBUG_IO (1 << 3)
#define SCRIPT_DEBUG_SIGNAL (1 << 4)
#define SCRIPT_DEBUG_MISC (1 << 5)
#define SCRIPT_DEBUG_ALL 0xFFFF
#define DBG(m, x) __UL_DBG(script, SCRIPT_DEBUG_, m, x)
#define ON_DBG(m, x) __UL_DBG_CALL(script, SCRIPT_DEBUG_, m, x)
#ifdef HAVE_LIBUTEMPTER
# include <utempter.h>
#endif
#define DEFAULT_TYPESCRIPT_FILENAME "typescript"
/*
* Script is driven by stream (stdout/stdin) activity. It's possible to
* associate arbitrary number of log files with the stream. We have two basic
* types of log files: "timing file" (simple or multistream) and "data file"
* (raw).
*
* The same log file maybe be shared between both streams. For example
* multi-stream timing file is possible to use for stdin as well as for stdout.
*/
enum {
SCRIPT_FMT_RAW = 1, /* raw slave/master data */
SCRIPT_FMT_TIMING_SIMPLE, /* (classic) in format "<delta> <offset>" */
SCRIPT_FMT_TIMING_MULTI, /* (advanced) multiple streams in format "<type> <delta> <offset|etc> */
};
struct script_log {
FILE *fp; /* file pointer (handler) */
int format; /* SCRIPT_FMT_* */
char *filename; /* on command line specified name */
struct timeval oldtime; /* previous entry log time (SCRIPT_FMT_TIMING_* only) */
struct timeval starttime;
unsigned int initialized : 1;
};
struct script_stream {
struct script_log **logs; /* logs where to write data from stream */
size_t nlogs; /* number of logs */
char ident; /* stream identifier */
};
struct script_control {
uint64_t outsz; /* current output files size */
uint64_t maxsz; /* maximum output files size */
struct script_stream out; /* output */
struct script_stream in; /* input */
struct script_log *siglog; /* log for signal entries */
struct script_log *infolog; /* log for info entries */
const char *ttyname;
const char *ttytype;
const char *command;
char *command_norm; /* normalized (without \n) */
int ttycols;
int ttylines;
struct ul_pty *pty; /* pseudo-terminal */
pid_t child; /* child pid */
int childstatus; /* child process exit value */
unsigned int
append:1, /* append output */
rc_wanted:1, /* return child exit value */
flush:1, /* flush after each write */
quiet:1, /* suppress most output */
force:1, /* write output to links */
isterm:1; /* is child process running as terminal */
};
static ssize_t log_info(struct script_control *ctl, const char *name, const char *msgfmt, ...)
__attribute__((__format__ (__printf__, 3, 4)));
static void script_init_debug(void)
{
__UL_INIT_DEBUG_FROM_ENV(script, SCRIPT_DEBUG_, 0, SCRIPT_DEBUG);
}
static void init_terminal_info(struct script_control *ctl)
{
if (ctl->ttyname || !ctl->isterm)
return; /* already initialized */
get_terminal_dimension(&ctl->ttycols, &ctl->ttylines);
get_terminal_name(&ctl->ttyname, NULL, NULL);
get_terminal_type(&ctl->ttytype);
}
/*
* For tests we want to be able to control time output
*/
#ifdef TEST_SCRIPT
static inline time_t script_time(time_t *t)
{
const char *str = getenv("SCRIPT_TEST_SECOND_SINCE_EPOCH");
int64_t sec;
if (!str || sscanf(str, "%"SCNi64, &sec) != 1)
return time(t);
if (t)
*t = (time_t)sec;
return (time_t)sec;
}
#else /* !TEST_SCRIPT */
# define script_time(x) time(x)
#endif
static void __attribute__((__noreturn__)) usage(void)
{
FILE *out = stdout;
fputs(USAGE_HEADER, out);
fprintf(out, _(" %s [options] [file]\n"), program_invocation_short_name);
fputs(USAGE_SEPARATOR, out);
fputs(_("Make a typescript of a terminal session.\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(_(" -I, --log-in <file> log stdin to file\n"), out);
fputs(_(" -O, --log-out <file> log stdout to file (default)\n"), out);
fputs(_(" -B, --log-io <file> log stdin and stdout to file\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(_(" -T, --log-timing <file> log timing information to file\n"), out);
fputs(_(" -t[<file>], --timing[=<file>] deprecated alias to -T (default file is stderr)\n"), out);
fputs(_(" -m, --logging-format <name> force to 'classic' or 'advanced' format\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(_(" -a, --append append to the log file\n"), out);
fputs(_(" -c, --command <command> run command rather than interactive shell\n"), out);
fputs(_(" -e, --return return exit code of the child process\n"), out);
fputs(_(" -f, --flush run flush after each write\n"), out);
fputs(_(" --force use output file even when it is a link\n"), out);
fputs(_(" -E, --echo <when> echo input in session (auto, always or never)\n"), out);
fputs(_(" -o, --output-limit <size> terminate if output files exceed size\n"), out);
fputs(_(" -q, --quiet be quiet\n"), out);
fputs(USAGE_SEPARATOR, out);
fprintf(out, USAGE_HELP_OPTIONS(31));
fprintf(out, USAGE_MAN_TAIL("script(1)"));
exit(EXIT_SUCCESS);
}
static struct script_log *get_log_by_name(struct script_stream *stream,
const char *name)
{
size_t i;
for (i = 0; i < stream->nlogs; i++) {
struct script_log *log = stream->logs[i];
if (strcmp(log->filename, name) == 0)
return log;
}
return NULL;
}
static struct script_log *log_associate(struct script_control *ctl,
struct script_stream *stream,
const char *filename, int format)
{
struct script_log *log;
DBG(MISC, ul_debug("associate %s with stream", filename));
assert(ctl);
assert(filename);
assert(stream);
log = get_log_by_name(stream, filename);
if (log)
return log; /* already defined */
log = get_log_by_name(stream == &ctl->out ? &ctl->in : &ctl->out, filename);
if (!log) {
/* create a new log */
log = xcalloc(1, sizeof(*log));
log->filename = xstrdup(filename);
log->format = format;
}
/* add log to the stream */
stream->logs = xreallocarray(stream->logs,
stream->nlogs + 1, sizeof(log));
stream->logs[stream->nlogs] = log;
stream->nlogs++;
/* remember where to write info about signals */
if (format == SCRIPT_FMT_TIMING_MULTI) {
if (!ctl->siglog)
ctl->siglog = log;
if (!ctl->infolog)
ctl->infolog = log;
}
return log;
}
static int log_close(struct script_control *ctl,
struct script_log *log,
const char *msg,
int status)
{
int rc = 0;
if (!log || !log->initialized)
return 0;
DBG(MISC, ul_debug("closing %s", log->filename));
switch (log->format) {
case SCRIPT_FMT_RAW:
{
char buf[FORMAT_TIMESTAMP_MAX];
time_t tvec = script_time((time_t *)NULL);
strtime_iso(&tvec, ISO_TIMESTAMP, buf, sizeof(buf));
if (msg)
fprintf(log->fp, _("\nScript done on %s [<%s>]\n"), buf, msg);
else
fprintf(log->fp, _("\nScript done on %s [COMMAND_EXIT_CODE=\"%d\"]\n"), buf, status);
break;
}
case SCRIPT_FMT_TIMING_MULTI:
{
struct timeval now = { 0 }, delta = { 0 };
gettime_monotonic(&now);
timersub(&now, &log->starttime, &delta);
log_info(ctl, "DURATION", "%"PRId64".%06"PRId64,
(int64_t)delta.tv_sec,
(int64_t)delta.tv_usec);
log_info(ctl, "EXIT_CODE", "%d", status);
break;
}
case SCRIPT_FMT_TIMING_SIMPLE:
break;
}
if (close_stream(log->fp) != 0) {
warn(_("write failed: %s"), log->filename);
rc = -errno;
}
free(log->filename);
memset(log, 0, sizeof(*log));
return rc;
}
static int log_flush(struct script_control *ctl __attribute__((__unused__)), struct script_log *log)
{
if (!log || !log->initialized)
return 0;
DBG(MISC, ul_debug("flushing %s", log->filename));
fflush(log->fp);
return 0;
}
static void log_free(struct script_control *ctl, struct script_log *log)
{
size_t i;
if (!log)
return;
/* the same log is possible to reference from more places, remove all
* (TODO: maybe use include/list.h to make it more elegant)
*/
if (ctl->siglog == log)
ctl->siglog = NULL;
else if (ctl->infolog == log)
ctl->infolog = NULL;
for (i = 0; i < ctl->out.nlogs; i++) {
if (ctl->out.logs[i] == log)
ctl->out.logs[i] = NULL;
}
for (i = 0; i < ctl->in.nlogs; i++) {
if (ctl->in.logs[i] == log)
ctl->in.logs[i] = NULL;
}
free(log);
}
static int log_start(struct script_control *ctl,
struct script_log *log)
{
if (log->initialized)
return 0;
DBG(MISC, ul_debug("opening %s", log->filename));
assert(log->fp == NULL);
/* open the log */
log->fp = fopen(log->filename,
ctl->append && log->format == SCRIPT_FMT_RAW ?
"a" UL_CLOEXECSTR :
"w" UL_CLOEXECSTR);
if (!log->fp) {
warn(_("cannot open %s"), log->filename);
return -errno;
}
/* write header, etc. */
switch (log->format) {
case SCRIPT_FMT_RAW:
{
int x = 0;
char buf[FORMAT_TIMESTAMP_MAX];
time_t tvec = script_time((time_t *)NULL);
strtime_iso(&tvec, ISO_TIMESTAMP, buf, sizeof(buf));
fprintf(log->fp, _("Script started on %s ["), buf);
if (ctl->command)
x += fprintf(log->fp, "COMMAND=\"%s\"", ctl->command_norm);
if (ctl->isterm) {
init_terminal_info(ctl);
if (ctl->ttytype)
x += fprintf(log->fp, "%*sTERM=\"%s\"", !!x, "", ctl->ttytype);
if (ctl->ttyname)
x += fprintf(log->fp, "%*sTTY=\"%s\"", !!x, "", ctl->ttyname);
x += fprintf(log->fp, "%*sCOLUMNS=\"%d\" LINES=\"%d\"", !!x, "",
ctl->ttycols, ctl->ttylines);
} else
fprintf(log->fp, _("%*s<not executed on terminal>"), !!x, "");
fputs("]\n", log->fp);
break;
}
case SCRIPT_FMT_TIMING_SIMPLE:
case SCRIPT_FMT_TIMING_MULTI:
gettime_monotonic(&log->oldtime);
gettime_monotonic(&log->starttime);
break;
}
log->initialized = 1;
return 0;
}
static int logging_start(struct script_control *ctl)
{
size_t i;
/* start all output logs */
for (i = 0; i < ctl->out.nlogs; i++) {
int rc = log_start(ctl, ctl->out.logs[i]);
if (rc)
return rc;
}
/* start all input logs */
for (i = 0; i < ctl->in.nlogs; i++) {
int rc = log_start(ctl, ctl->in.logs[i]);
if (rc)
return rc;
}
return 0;
}
static ssize_t log_write(struct script_control *ctl,
struct script_stream *stream,
struct script_log *log,
char *obuf, size_t bytes)
{
int rc;
ssize_t ssz = 0;
struct timeval now, delta;
if (!log->fp)
return 0;
DBG(IO, ul_debug(" writing [file=%s]", log->filename));
switch (log->format) {
case SCRIPT_FMT_RAW:
DBG(IO, ul_debug(" log raw data"));
rc = fwrite_all(obuf, 1, bytes, log->fp);
if (rc) {
warn(_("cannot write %s"), log->filename);
return rc;
}
ssz = bytes;
break;
case SCRIPT_FMT_TIMING_SIMPLE:
DBG(IO, ul_debug(" log timing info"));
gettime_monotonic(&now);
timersub(&now, &log->oldtime, &delta);
ssz = fprintf(log->fp, "%"PRId64".%06"PRId64" %zd\n",
(int64_t)delta.tv_sec, (int64_t)delta.tv_usec, bytes);
if (ssz < 0)
return -errno;
log->oldtime = now;
break;
case SCRIPT_FMT_TIMING_MULTI:
DBG(IO, ul_debug(" log multi-stream timing info"));
gettime_monotonic(&now);
timersub(&now, &log->oldtime, &delta);
ssz = fprintf(log->fp, "%c %"PRId64".%06"PRId64" %zd\n",
stream->ident,
(int64_t)delta.tv_sec, (int64_t)delta.tv_usec, bytes);
if (ssz < 0)
return -errno;
log->oldtime = now;
break;
default:
break;
}
if (ctl->flush)
fflush(log->fp);
return ssz;
}
static ssize_t log_stream_activity(
struct script_control *ctl,
struct script_stream *stream,
char *buf, size_t bytes)
{
size_t i;
ssize_t outsz = 0;
for (i = 0; i < stream->nlogs; i++) {
ssize_t ssz = log_write(ctl, stream, stream->logs[i], buf, bytes);
if (ssz < 0)
return ssz;
outsz += ssz;
}
return outsz;
}
static ssize_t __attribute__ ((__format__ (__printf__, 3, 4)))
log_signal(struct script_control *ctl, int signum, const char *msgfmt, ...)
{
struct script_log *log;
struct timeval now, delta;
char msg[BUFSIZ] = {0};
va_list ap;
ssize_t sz;
assert(ctl);
log = ctl->siglog;
if (!log)
return 0;
assert(log->format == SCRIPT_FMT_TIMING_MULTI);
DBG(IO, ul_debug(" writing signal to multi-stream timing"));
gettime_monotonic(&now);
timersub(&now, &log->oldtime, &delta);
if (msgfmt) {
int rc;
va_start(ap, msgfmt);
rc = vsnprintf(msg, sizeof(msg), msgfmt, ap);
va_end(ap);
if (rc < 0)
*msg = '\0';;
}
if (*msg)
sz = fprintf(log->fp, "S %"PRId64".%06"PRId64" SIG%s %s\n",
(int64_t)delta.tv_sec, (int64_t)delta.tv_usec,
signum_to_signame(signum), msg);
else
sz = fprintf(log->fp, "S %"PRId64".%06"PRId64" SIG%s\n",
(int64_t)delta.tv_sec, (int64_t)delta.tv_usec,
signum_to_signame(signum));
log->oldtime = now;
return sz;
}
static ssize_t log_info(struct script_control *ctl, const char *name, const char *msgfmt, ...)
{
struct script_log *log;
char msg[BUFSIZ] = {0};
va_list ap;
ssize_t sz;
assert(ctl);
log = ctl->infolog;
if (!log)
return 0;
assert(log->format == SCRIPT_FMT_TIMING_MULTI);
DBG(IO, ul_debug(" writing info to multi-stream log"));
if (msgfmt) {
int rc;
va_start(ap, msgfmt);
rc = vsnprintf(msg, sizeof(msg), msgfmt, ap);
va_end(ap);
if (rc < 0)
*msg = '\0';;
}
if (*msg)
sz = fprintf(log->fp, "H %f %s %s\n", 0.0, name, msg);
else
sz = fprintf(log->fp, "H %f %s\n", 0.0, name);
return sz;
}
static void logging_done(struct script_control *ctl, const char *msg)
{
int status;
size_t i;
DBG(MISC, ul_debug("stop logging"));
if (WIFSIGNALED(ctl->childstatus))
status = WTERMSIG(ctl->childstatus) + 0x80;
else
status = WEXITSTATUS(ctl->childstatus);
DBG(MISC, ul_debug(" status=%d", status));
/* close all output logs */
for (i = 0; i < ctl->out.nlogs; i++) {
struct script_log *log = ctl->out.logs[i];
log_close(ctl, log, msg, status);
log_free(ctl, log);
}
free(ctl->out.logs);
ctl->out.logs = NULL;
ctl->out.nlogs = 0;
/* close all input logs */
for (i = 0; i < ctl->in.nlogs; i++) {
struct script_log *log = ctl->in.logs[i];
log_close(ctl, log, msg, status);
log_free(ctl, log);
}
free(ctl->in.logs);
ctl->in.logs = NULL;
ctl->in.nlogs = 0;
}
static void callback_child_die(
void *data,
pid_t child __attribute__((__unused__)),
int status)
{
struct script_control *ctl = (struct script_control *) data;
ctl->child = (pid_t) -1;
ctl->childstatus = status;
}
static void callback_child_sigstop(
void *data __attribute__((__unused__)),
pid_t child)
{
DBG(SIGNAL, ul_debug(" child stop by SIGSTOP -- stop parent too"));
kill(getpid(), SIGSTOP);
DBG(SIGNAL, ul_debug(" resume"));
kill(child, SIGCONT);
}
static int callback_log_stream_activity(void *data, int fd, char *buf, size_t bufsz)
{
struct script_control *ctl = (struct script_control *) data;
ssize_t ssz = 0;
DBG(IO, ul_debug("stream activity callback"));
/* from stdin (user) to command */
if (fd == STDIN_FILENO)
ssz = log_stream_activity(ctl, &ctl->in, buf, (size_t) bufsz);
/* from command (master) to stdout and log */
else if (fd == ul_pty_get_childfd(ctl->pty))
ssz = log_stream_activity(ctl, &ctl->out, buf, (size_t) bufsz);
if (ssz < 0)
return (int) ssz;
DBG(IO, ul_debug(" append %zd bytes [summary=%" PRIu64 ", max=%" PRIu64 "]", ssz,
ctl->outsz, ctl->maxsz));
ctl->outsz += ssz;
/* check output limit */
if (ctl->maxsz != 0 && ctl->outsz >= ctl->maxsz) {
if (!ctl->quiet)
printf(_("Script terminated, max output files size %"PRIu64" exceeded.\n"), ctl->maxsz);
DBG(IO, ul_debug("output size %"PRIu64", exceeded limit %"PRIu64, ctl->outsz, ctl->maxsz));
logging_done(ctl, _("max output size exceeded"));
return 1;
}
return 0;
}
static int callback_log_signal(void *data, struct signalfd_siginfo *info, void *sigdata)
{
struct script_control *ctl = (struct script_control *) data;
ssize_t ssz = 0;
switch (info->ssi_signo) {
case SIGWINCH:
{
struct winsize *win = (struct winsize *) sigdata;
ssz = log_signal(ctl, info->ssi_signo, "ROWS=%d COLS=%d",
win->ws_row, win->ws_col);
break;
}
case SIGTERM:
/* fallthrough */
case SIGINT:
/* fallthrough */
case SIGQUIT:
ssz = log_signal(ctl, info->ssi_signo, NULL);
break;
default:
/* no log */
break;
}
return ssz < 0 ? ssz : 0;
}
static int callback_flush_logs(void *data)
{
struct script_control *ctl = (struct script_control *) data;
size_t i;
for (i = 0; i < ctl->out.nlogs; i++) {
int rc = log_flush(ctl, ctl->out.logs[i]);
if (rc)
return rc;
}
for (i = 0; i < ctl->in.nlogs; i++) {
int rc = log_flush(ctl, ctl->in.logs[i]);
if (rc)
return rc;
}
return 0;
}
static void die_if_link(struct script_control *ctl, const char *filename)
{
struct stat s;
if (ctl->force)
return;
if (lstat(filename, &s) == 0 && (S_ISLNK(s.st_mode) || s.st_nlink > 1))
errx(EXIT_FAILURE,
_("output file `%s' is a link\n"
"Use --force if you really want to use it.\n"
"Program not started."), filename);
}
int main(int argc, char **argv)
{
struct script_control ctl = {
.out = { .ident = 'O' },
.in = { .ident = 'I' },
};
struct ul_pty_callbacks *cb;
int ch, format = 0, caught_signal = 0, rc = 0, echo = 1;
const char *outfile = NULL, *infile = NULL;
const char *timingfile = NULL, *shell = NULL;
enum { FORCE_OPTION = CHAR_MAX + 1 };
static const struct option longopts[] = {
{"append", no_argument, NULL, 'a'},
{"command", required_argument, NULL, 'c'},
{"echo", required_argument, NULL, 'E'},
{"return", no_argument, NULL, 'e'},
{"flush", no_argument, NULL, 'f'},
{"force", no_argument, NULL, FORCE_OPTION,},
{"log-in", required_argument, NULL, 'I'},
{"log-out", required_argument, NULL, 'O'},
{"log-io", required_argument, NULL, 'B'},
{"log-timing", required_argument, NULL, 'T'},
{"logging-format", required_argument, NULL, 'm'},
{"output-limit", required_argument, NULL, 'o'},
{"quiet", no_argument, NULL, 'q'},
{"timing", optional_argument, NULL, 't'},
{"version", no_argument, NULL, 'V'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
{ 'T', 't' },
{ 0 }
};
int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
setlocale(LC_ALL, "");
/*
* script -t prints time delays as floating point numbers. The example
* program (scriptreplay) that we provide to handle this timing output
* is a perl script, and does not handle numbers in locale format (not
* even when "use locale;" is added). So, since these numbers are not
* for human consumption, it seems easiest to set LC_NUMERIC here.
*/
setlocale(LC_NUMERIC, "C");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
close_stdout_atexit();
script_init_debug();
ON_DBG(PTY, ul_pty_init_debug(0xFFFF));
ctl.isterm = isatty(STDIN_FILENO);
while ((ch = getopt_long(argc, argv, "aB:c:eE:fI:O:o:qm:T:t::Vh", longopts, NULL)) != -1) {
err_exclusive_options(ch, longopts, excl, excl_st);
switch (ch) {
case 'a':
ctl.append = 1;
break;
case 'c':
ctl.command = optarg;
ctl.command_norm = xstrdup(ctl.command);
strrep(ctl.command_norm, '\n', ' ');
break;
case 'E':
if (strcmp(optarg, "auto") == 0)
; /* keep default */
else if (strcmp(optarg, "never") == 0)
echo = 0;
else if (strcmp(optarg, "always") == 0)
echo = 1;
else
errx(EXIT_FAILURE, _("unssuported echo mode: '%s'"), optarg);
break;
case 'e':
ctl.rc_wanted = 1;
break;
case 'f':
ctl.flush = 1;
break;
case FORCE_OPTION:
ctl.force = 1;
break;
case 'B':
log_associate(&ctl, &ctl.in, optarg, SCRIPT_FMT_RAW);
log_associate(&ctl, &ctl.out, optarg, SCRIPT_FMT_RAW);
infile = outfile = optarg;
break;
case 'I':
log_associate(&ctl, &ctl.in, optarg, SCRIPT_FMT_RAW);
infile = optarg;
break;
case 'O':
log_associate(&ctl, &ctl.out, optarg, SCRIPT_FMT_RAW);
outfile = optarg;
break;
case 'o':
ctl.maxsz = strtosize_or_err(optarg, _("failed to parse output limit size"));
break;
case 'q':
ctl.quiet = 1;
break;
case 'm':
if (strcasecmp(optarg, "classic") == 0)
format = SCRIPT_FMT_TIMING_SIMPLE;
else if (strcasecmp(optarg, "advanced") == 0)
format = SCRIPT_FMT_TIMING_MULTI;
else
errx(EXIT_FAILURE, _("unsupported logging format: '%s'"), optarg);
break;
case 't':
if (optarg && *optarg == '=')
optarg++;
timingfile = optarg ? optarg : "/dev/stderr";
break;
case 'T' :
timingfile = optarg;
break;
case 'V':
print_version(EXIT_SUCCESS);
case 'h':
usage();
default:
errtryhelp(EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
/* default if no --log-* specified */
if (!outfile && !infile) {
if (argc > 0) {
outfile = argv[0];
argc--;
argv++;
} else {
die_if_link(&ctl, DEFAULT_TYPESCRIPT_FILENAME);
outfile = DEFAULT_TYPESCRIPT_FILENAME;
}
/* associate stdout with typescript file */
log_associate(&ctl, &ctl.out, outfile, SCRIPT_FMT_RAW);
}
if (argc > 0) {
/* only one filename is accepted. if --log-out was given,
* freestanding filename is ignored */
warnx(_("unexpected number of arguments"));
errtryhelp(EXIT_FAILURE);
}
if (timingfile) {
/* the old SCRIPT_FMT_TIMING_SIMPLE should be used when
* recoding output only (just for backward compatibility),
* otherwise switch to new format. */
if (!format)
format = infile || (outfile && infile) ?
SCRIPT_FMT_TIMING_MULTI :
SCRIPT_FMT_TIMING_SIMPLE;
else if (format == SCRIPT_FMT_TIMING_SIMPLE && outfile && infile)
errx(EXIT_FAILURE, _("log multiple streams is mutually "
"exclusive with 'classic' format"));
if (outfile)
log_associate(&ctl, &ctl.out, timingfile, format);
if (infile)
log_associate(&ctl, &ctl.in, timingfile, format);
}
shell = getenv("SHELL");
if (!shell)
shell = _PATH_BSHELL;
ctl.pty = ul_new_pty(ctl.isterm);
if (!ctl.pty)
err(EXIT_FAILURE, "failed to allocate PTY handler");
ul_pty_slave_echo(ctl.pty, echo);
ul_pty_set_callback_data(ctl.pty, (void *) &ctl);
cb = ul_pty_get_callbacks(ctl.pty);
cb->child_die = callback_child_die;
cb->child_sigstop = callback_child_sigstop;
cb->log_stream_activity = callback_log_stream_activity;
cb->log_signal = callback_log_signal;
cb->flush_logs = callback_flush_logs;
if (!ctl.quiet) {
printf(_("Script started"));
if (outfile)
printf(_(", output log file is '%s'"), outfile);
if (infile)
printf(_(", input log file is '%s'"), infile);
if (timingfile)
printf(_(", timing file is '%s'"), timingfile);
printf(_(".\n"));
}
if (ul_pty_setup(ctl.pty))
err(EXIT_FAILURE, _("failed to create pseudo-terminal"));
#ifdef HAVE_LIBUTEMPTER
utempter_add_record(ul_pty_get_childfd(ctl.pty), NULL);
#endif
if (ul_pty_signals_setup(ctl.pty))
err(EXIT_FAILURE, _("failed to initialize signals handler"));
fflush(stdout);
/*
* We have terminal, do not use err() from now, use "goto done"
*/
switch ((int) (ctl.child = fork())) {
case -1: /* error */
warn(_("cannot create child process"));
rc = -errno;
goto done;
case 0: /* child */
{
const char *shname;
ul_pty_init_slave(ctl.pty);
signal(SIGTERM, SIG_DFL); /* because /etc/csh.login */
shname = strrchr(shell, '/');
shname = shname ? shname + 1 : shell;
if (access(shell, X_OK) == 0) {
if (ctl.command)
execl(shell, shname, "-c", ctl.command, (char *)NULL);
else
execl(shell, shname, "-i", (char *)NULL);
} else {
if (ctl.command)
execlp(shname, shname, "-c", ctl.command, (char *)NULL);
else