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-rw-r--r--term-utils/scriptreplay.c339
1 files changed, 339 insertions, 0 deletions
diff --git a/term-utils/scriptreplay.c b/term-utils/scriptreplay.c
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--- /dev/null
+++ b/term-utils/scriptreplay.c
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+/*
+ * Copyright (C) 2008-2019, Karel Zak <kzak@redhat.com>
+ * Copyright (C) 2008, James Youngman <jay@gnu.org>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ * Based on scriptreplay.pl by Joey Hess <joey@kitenet.net>
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <limits.h>
+#include <math.h>
+#include <sys/select.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/time.h>
+#include <termios.h>
+
+#include "c.h"
+#include "xalloc.h"
+#include "closestream.h"
+#include "nls.h"
+#include "strutils.h"
+#include "optutils.h"
+#include "script-playutils.h"
+
+static void __attribute__((__noreturn__))
+usage(void)
+{
+ FILE *out = stdout;
+ fputs(USAGE_HEADER, out);
+ fprintf(out,
+ _(" %s [options]\n"),
+ program_invocation_short_name);
+ fprintf(out,
+ _(" %s [-t] timingfile [typescript] [divisor]\n"),
+ program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Play back terminal typescripts, using timing information.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ fputs(_(" -t, --timing <file> script timing log file\n"), out);
+ fputs(_(" -T, --log-timing <file> alias to -t\n"), out);
+ fputs(_(" -I, --log-in <file> script stdin log file\n"), out);
+ fputs(_(" -O, --log-out <file> script stdout log file (default)\n"), out);
+ fputs(_(" -B, --log-io <file> script stdin and stdout log file\n"), out);
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_(" -s, --typescript <file> deprecated alias to -O\n"), out);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_(" --summary display overview about recorded session and exit\n"), out);
+ fputs(_(" -d, --divisor <num> speed up or slow down execution with time divisor\n"), out);
+ fputs(_(" -m, --maxdelay <num> wait at most this many seconds between updates\n"), out);
+ fputs(_(" -x, --stream <name> stream type (out, in, signal or info)\n"), out);
+ fputs(_(" -c, --cr-mode <type> CR char mode (auto, never, always)\n"), out);
+ printf(USAGE_HELP_OPTIONS(25));
+
+ printf(USAGE_MAN_TAIL("scriptreplay(1)"));
+ exit(EXIT_SUCCESS);
+}
+
+static double
+getnum(const char *s)
+{
+ const double d = strtod_or_err(s, _("failed to parse number"));
+
+ if (isnan(d)) {
+ errno = EINVAL;
+ err(EXIT_FAILURE, "%s: %s", _("failed to parse number"), s);
+ }
+ return d;
+}
+
+static void
+delay_for(struct timeval *delay)
+{
+#ifdef HAVE_NANOSLEEP
+ struct timespec ts, remainder;
+ ts.tv_sec = (time_t) delay->tv_sec;
+ ts.tv_nsec = delay->tv_usec * 1000;
+
+ DBG(TIMING, ul_debug("going to sleep for %"PRId64".%06"PRId64,
+ (int64_t) delay->tv_sec, (int64_t) delay->tv_usec));
+
+ while (-1 == nanosleep(&ts, &remainder)) {
+ if (EINTR == errno)
+ ts = remainder;
+ else
+ break;
+ }
+#else
+ select(0, NULL, NULL, NULL, delay);
+#endif
+}
+
+static void
+appendchr(char *buf, size_t bufsz, int c)
+{
+ size_t sz;
+
+ if (strchr(buf, c))
+ return; /* already in */
+
+ sz = strlen(buf);
+ if (sz + 1 < bufsz)
+ buf[sz] = c;
+}
+
+static int
+setterm(struct termios *backup)
+{
+ struct termios tattr;
+
+ if (tcgetattr(STDOUT_FILENO, backup) != 0) {
+ if (errno != ENOTTY) /* For debugger. */
+ err(EXIT_FAILURE, _("unexpected tcgetattr failure"));
+ return 0;
+ }
+ tattr = *backup;
+ cfmakeraw(&tattr);
+ tattr.c_lflag |= ISIG;
+ tcsetattr(STDOUT_FILENO, TCSANOW, &tattr);
+ return 1;
+}
+
+int
+main(int argc, char *argv[])
+{
+ static const struct timeval mindelay = { .tv_sec = 0, .tv_usec = 100 };
+ struct timeval maxdelay;
+
+ int isterm;
+ struct termios saved;
+
+ struct replay_setup *setup = NULL;
+ struct replay_step *step = NULL;
+ char streams[6] = {0}; /* IOSI - in, out, signal,info */
+ const char *log_out = NULL,
+ *log_in = NULL,
+ *log_io = NULL,
+ *log_tm = NULL;
+ double divi = 1;
+ int diviopt = FALSE, idx;
+ int ch, rc, crmode = REPLAY_CRMODE_AUTO, summary = 0;
+ enum {
+ OPT_SUMMARY = CHAR_MAX + 1
+ };
+
+ static const struct option longopts[] = {
+ { "cr-mode", required_argument, 0, 'c' },
+ { "timing", required_argument, 0, 't' },
+ { "log-timing", required_argument, 0, 'T' },
+ { "log-in", required_argument, 0, 'I' },
+ { "log-out", required_argument, 0, 'O' },
+ { "log-io", required_argument, 0, 'B' },
+ { "typescript", required_argument, 0, 's' },
+ { "divisor", required_argument, 0, 'd' },
+ { "maxdelay", required_argument, 0, 'm' },
+ { "stream", required_argument, 0, 'x' },
+ { "summary", no_argument, 0, OPT_SUMMARY },
+ { "version", no_argument, 0, 'V' },
+ { "help", no_argument, 0, 'h' },
+ { NULL, 0, 0, 0 }
+ };
+ static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
+ { 'O', 's' },
+ { 0 }
+ };
+ int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
+ /* Because we use space as a separator, we can't afford to use any
+ * locale which tolerates a space in a number. In any case, script.c
+ * sets the LC_NUMERIC locale to C, anyway.
+ */
+ setlocale(LC_ALL, "");
+ setlocale(LC_NUMERIC, "C");
+
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ replay_init_debug();
+ timerclear(&maxdelay);
+
+ while ((ch = getopt_long(argc, argv, "B:c:I:O:T:t:s:d:m:x:Vh", longopts, NULL)) != -1) {
+
+ err_exclusive_options(ch, longopts, excl, excl_st);
+
+ switch(ch) {
+ case 'c':
+ if (strcmp("auto", optarg) == 0)
+ crmode = REPLAY_CRMODE_AUTO;
+ else if (strcmp("never", optarg) == 0)
+ crmode = REPLAY_CRMODE_NEVER;
+ else if (strcmp("always", optarg) == 0)
+ crmode = REPLAY_CRMODE_ALWAYS;
+ else
+ errx(EXIT_FAILURE, _("unsupported mode name: '%s'"), optarg);
+ break;
+ case 't':
+ case 'T':
+ log_tm = optarg;
+ break;
+ case 'O':
+ case 's':
+ log_out = optarg;
+ break;
+ case 'I':
+ log_in = optarg;
+ break;
+ case 'B':
+ log_io = optarg;
+ break;
+ case 'd':
+ diviopt = TRUE;
+ divi = getnum(optarg);
+ break;
+ case 'm':
+ strtotimeval_or_err(optarg, &maxdelay, _("failed to parse maximal delay argument"));
+ break;
+ case 'x':
+ if (strcmp("in", optarg) == 0)
+ appendchr(streams, sizeof(streams), 'I');
+ else if (strcmp("out", optarg) == 0)
+ appendchr(streams, sizeof(streams), 'O');
+ else if (strcmp("signal", optarg) == 0)
+ appendchr(streams, sizeof(streams), 'S');
+ else if (strcmp("info", optarg) == 0)
+ appendchr(streams, sizeof(streams), 'H');
+ else
+ errx(EXIT_FAILURE, _("unsupported stream name: '%s'"), optarg);
+ break;
+ case OPT_SUMMARY:
+ summary = 1;
+ break;
+ case 'V':
+ print_version(EXIT_SUCCESS);
+ case 'h':
+ usage();
+ default:
+ errtryhelp(EXIT_FAILURE);
+ }
+ }
+ argc -= optind;
+ argv += optind;
+ idx = 0;
+
+ if (summary)
+ streams[0] = 'H', streams[1] = '\0';
+
+ if (!log_tm && idx < argc)
+ log_tm = argv[idx++];
+ if (!log_out && !summary && !log_in && !log_io)
+ log_out = idx < argc ? argv[idx++] : "typescript";
+
+ if (!diviopt)
+ divi = idx < argc ? getnum(argv[idx]) : 1;
+
+ if (!log_tm)
+ errx(EXIT_FAILURE, _("timing file not specified"));
+ if (!(log_out || log_in || log_io) && !summary)
+ errx(EXIT_FAILURE, _("data log file not specified"));
+
+ setup = replay_new_setup();
+
+ if (replay_set_timing_file(setup, log_tm) != 0)
+ err(EXIT_FAILURE, _("cannot open %s"), log_tm);
+
+ if (log_out && replay_associate_log(setup, "O", log_out) != 0)
+ err(EXIT_FAILURE, _("cannot open %s"), log_out);
+
+ if (log_in && replay_associate_log(setup, "I", log_in) != 0)
+ err(EXIT_FAILURE, _("cannot open %s"), log_in);
+
+ if (log_io && replay_associate_log(setup, "IO", log_io) != 0)
+ err(EXIT_FAILURE, _("cannot open %s"), log_io);
+
+ if (!*streams) {
+ /* output is preferred default */
+ if (log_out || log_io)
+ appendchr(streams, sizeof(streams), 'O');
+ else if (log_in)
+ appendchr(streams, sizeof(streams), 'I');
+ }
+
+ replay_set_default_type(setup,
+ *streams && streams[1] == '\0' ? *streams : 'O');
+ replay_set_crmode(setup, crmode);
+
+ if (divi != 1)
+ replay_set_delay_div(setup, divi);
+ if (timerisset(&maxdelay))
+ replay_set_delay_max(setup, &maxdelay);
+ replay_set_delay_min(setup, &mindelay);
+
+ isterm = setterm(&saved);
+
+ do {
+ rc = replay_get_next_step(setup, streams, &step);
+ if (rc)
+ break;
+
+ if (!summary) {
+ struct timeval *delay = replay_step_get_delay(step);
+
+ if (delay && timerisset(delay))
+ delay_for(delay);
+ }
+ rc = replay_emit_step_data(setup, step, STDOUT_FILENO);
+ } while (rc == 0);
+
+ if (isterm)
+ tcsetattr(STDOUT_FILENO, TCSADRAIN, &saved);
+
+ if (step && rc < 0)
+ err(EXIT_FAILURE, _("%s: log file error"), replay_step_get_filename(step));
+ else if (rc < 0)
+ err(EXIT_FAILURE, _("%s: line %d: timing file error"),
+ replay_get_timing_file(setup),
+ replay_get_timing_line(setup));
+ printf("\n");
+ replay_free_setup(setup);
+
+ exit(EXIT_SUCCESS);
+}
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