[openssh.git] / progressmeter.c

/*
 * Copyright (c) 1999 Theo de Raadt.  All rights reserved.
 * Copyright (c) 1999 Aaron Campbell.  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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/*
 * Parts from:
 *
 * Copyright (c) 1983, 1990, 1992, 1993, 1995
 *	The Regents of the University of California.  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 "includes.h"
RCSID("$OpenBSD: progressmeter.c,v 1.2 2003/01/12 16:57:02 markus Exp $");

#ifdef HAVE_LIBGEN_H
#include <libgen.h>
#endif

#include "atomicio.h"
#include "progressmeter.h"

/* Number of seconds before xfer considered "stalled". */
#define STALLTIME	5
/* alarm() interval for updating progress meter. */
#define PROGRESSTIME	1

/* Signal handler used for updating the progress meter. */
static void update_progress_meter(int);

/* Returns non-zero if we are the foreground process. */
static int foregroundproc(void);

/* Returns width of the terminal (for progress meter calculations). */
static int get_tty_width(void);

/* Visual statistics about files as they are transferred. */
static void draw_progress_meter(void);

/* Time a transfer started. */
static struct timeval start;

/* Number of bytes of current file transferred so far. */
static volatile off_t *statbytes;

/* Total size of current file. */
static off_t totalbytes;

/* Name of current file being transferred. */
static char *curfile;

/* Time of last update. */
static struct timeval lastupdate;

/* Size at the time of the last update. */
static off_t lastsize;

void
start_progress_meter(char *file, off_t filesize, off_t *counter)
{
	if ((curfile = basename(file)) == NULL)
		curfile = file;

	totalbytes = filesize;
	statbytes = counter;
	(void) gettimeofday(&start, (struct timezone *) 0);
	lastupdate = start;
	lastsize = 0;

	draw_progress_meter();
	signal(SIGALRM, update_progress_meter);
	alarm(PROGRESSTIME);
}

void
stop_progress_meter()
{
	alarm(0);
	draw_progress_meter();
	atomicio(write, fileno(stdout), "\n", 1);
}

static void
update_progress_meter(int ignore)
{
	int save_errno = errno;

	draw_progress_meter();
	signal(SIGALRM, update_progress_meter);
	alarm(PROGRESSTIME);
	errno = save_errno;
}

static int
foregroundproc(void)
{
	static pid_t pgrp = -1;
	int ctty_pgrp;

	if (pgrp == -1)
		pgrp = getpgrp();

#ifdef HAVE_TCGETPGRP
        return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
	                ctty_pgrp == pgrp);
#else
	return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
		 ctty_pgrp == pgrp));
#endif
}

static void
draw_progress_meter()
{
	static const char spaces[] = "                          "
	    "                                                   "
	    "                                                   "
	    "                                                   "
	    "                                                   "
	    "                                                   ";
	static const char prefixes[] = " KMGTP";
	struct timeval now, td, wait;
	off_t cursize, abbrevsize, bytespersec;
	double elapsed;
	int ratio, remaining, i, ai, bi, nspaces;
	char buf[512];

	if (foregroundproc() == 0)
		return;

	(void) gettimeofday(&now, (struct timezone *) 0);
	cursize = *statbytes;
	if (totalbytes != 0) {
		ratio = 100.0 * cursize / totalbytes;
		ratio = MAX(ratio, 0);
		ratio = MIN(ratio, 100);
	} else
		ratio = 100;

	abbrevsize = cursize;
	for (ai = 0; abbrevsize >= 10000 && ai < sizeof(prefixes); ai++)
		abbrevsize >>= 10;

	timersub(&now, &lastupdate, &wait);
	if (cursize > lastsize) {
		lastupdate = now;
		lastsize = cursize;
		wait.tv_sec = 0;
	}
	timersub(&now, &start, &td);
	elapsed = td.tv_sec + (td.tv_usec / 1000000.0);

	bytespersec = 0;
	if (cursize > 0) {
		bytespersec = cursize;
		if (elapsed > 0.0)
			bytespersec /= elapsed;
	}
	for (bi = 1; bytespersec >= 1024000 && bi < sizeof(prefixes); bi++)
		bytespersec >>= 10;

    	nspaces = MIN(get_tty_width() - 79, sizeof(spaces) - 1);

#ifdef HAVE_LONG_LONG_INT
	snprintf(buf, sizeof(buf),
	    "\r%-45.45s%.*s%3d%% %4lld%c%c %3lld.%01d%cB/s",
	    curfile,
	    nspaces,
	    spaces,
	    ratio,
	    (long long)abbrevsize,
	    prefixes[ai],
	    ai == 0 ? ' ' : 'B',
	    (long long)(bytespersec / 1024),
	    (int)((bytespersec % 1024) * 10 / 1024),
	    prefixes[bi]
	);
#else
		/* XXX: Handle integer overflow? */
	snprintf(buf, sizeof(buf),
	    "\r%-45.45s%.*s%3d%% %4lu%c%c %3lu.%01d%cB/s",
	    curfile,
	    nspaces,
	    spaces,
	    ratio,
	    (u_long)abbrevsize,
	    prefixes[ai],
	    ai == 0 ? ' ' : 'B',
	    (u_long)(bytespersec / 1024),
	    (int)((bytespersec % 1024) * 10 / 1024),
	    prefixes[bi]
	);
#endif

	if (cursize <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
		snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
		    "   --:-- ETA");
	} else if (wait.tv_sec >= STALLTIME) {
		snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
		    " - stalled -");
	} else {
		if (cursize != totalbytes)
			remaining = (int)(totalbytes / (cursize / elapsed) -
			    elapsed);
		else
			remaining = elapsed;

		i = remaining / 3600;
		if (i)
			snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
			    "%2d:", i);
		else
			snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
			    "   ");
		i = remaining % 3600;
		snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
		    "%02d:%02d%s", i / 60, i % 60,
		    (cursize != totalbytes) ? " ETA" : "    ");
	}
	atomicio(write, fileno(stdout), buf, strlen(buf));
}

static int
get_tty_width(void)
{
	struct winsize winsize;

	if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
		return (winsize.ws_col ? winsize.ws_col : 80);
	else
		return (80);
}
Commit	Line	Data
c9c38b73	1	/*
	2	* Copyright (c) 1999 Theo de Raadt. All rights reserved.
	3	* Copyright (c) 1999 Aaron Campbell. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	17	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25
	26	/*
	27	* Parts from:
	28	*
	29	* Copyright (c) 1983, 1990, 1992, 1993, 1995
	30	* The Regents of the University of California. All rights reserved.
	31	*
	32	* Redistribution and use in source and binary forms, with or without
	33	* modification, are permitted provided that the following conditions
	34	* are met:
	35	* 1. Redistributions of source code must retain the above copyright
	36	* notice, this list of conditions and the following disclaimer.
	37	* 2. Redistributions in binary form must reproduce the above copyright
	38	* notice, this list of conditions and the following disclaimer in the
	39	* documentation and/or other materials provided with the distribution.
	40	* 3. All advertising materials mentioning features or use of this software
	41	* must display the following acknowledgement:
	42	* This product includes software developed by the University of
	43	* California, Berkeley and its contributors.
	44	* 4. Neither the name of the University nor the names of its contributors
	45	* may be used to endorse or promote products derived from this software
	46	* without specific prior written permission.
	47	*
	48	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	49	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	50	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	51	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	52	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	53	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	54	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	55	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	56	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	57	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	58	* SUCH DAMAGE.
	59	*
	60	*/
	61
	62	#include "includes.h"
b7fd001f	63	RCSID("$OpenBSD: progressmeter.c,v 1.2 2003/01/12 16:57:02 markus Exp $");
c9c38b73	64
7d132853	65	#ifdef HAVE_LIBGEN_H
c9c38b73	66	#include <libgen.h>
7d132853	67	#endif
c9c38b73	68
c9c38b73	69	#include "atomicio.h"
b7fd001f	70	#include "progressmeter.h"
c9c38b73	71
	72	/* Number of seconds before xfer considered "stalled". */
	73	#define STALLTIME 5
	74	/* alarm() interval for updating progress meter. */
	75	#define PROGRESSTIME 1
	76
	77	/* Signal handler used for updating the progress meter. */
	78	static void update_progress_meter(int);
	79
	80	/* Returns non-zero if we are the foreground process. */
	81	static int foregroundproc(void);
	82
	83	/* Returns width of the terminal (for progress meter calculations). */
	84	static int get_tty_width(void);
	85
	86	/* Visual statistics about files as they are transferred. */
b7fd001f	87	static void draw_progress_meter(void);
c9c38b73	88
	89	/* Time a transfer started. */
	90	static struct timeval start;
	91
	92	/* Number of bytes of current file transferred so far. */
	93	static volatile off_t *statbytes;
	94
	95	/* Total size of current file. */
	96	static off_t totalbytes;
	97
	98	/* Name of current file being transferred. */
	99	static char *curfile;
	100
	101	/* Time of last update. */
	102	static struct timeval lastupdate;
	103
	104	/* Size at the time of the last update. */
	105	static off_t lastsize;
	106
	107	void
	108	start_progress_meter(char file, off_t filesize, off_t counter)
	109	{
	110	if ((curfile = basename(file)) == NULL)
	111	curfile = file;
	112
	113	totalbytes = filesize;
	114	statbytes = counter;
	115	(void) gettimeofday(&start, (struct timezone *) 0);
	116	lastupdate = start;
	117	lastsize = 0;
	118
	119	draw_progress_meter();
	120	signal(SIGALRM, update_progress_meter);
	121	alarm(PROGRESSTIME);
	122	}
	123
	124	void
	125	stop_progress_meter()
	126	{
	127	alarm(0);
	128	draw_progress_meter();
	129	atomicio(write, fileno(stdout), "\n", 1);
	130	}
	131
	132	static void
	133	update_progress_meter(int ignore)
	134	{
	135	int save_errno = errno;
	136
	137	draw_progress_meter();
	138	signal(SIGALRM, update_progress_meter);
	139	alarm(PROGRESSTIME);
	140	errno = save_errno;
	141	}
	142
	143	static int
	144	foregroundproc(void)
	145	{
	146	static pid_t pgrp = -1;
	147	int ctty_pgrp;
	148
	149	if (pgrp == -1)
	150	pgrp = getpgrp();
	151
7d132853	152	#ifdef HAVE_TCGETPGRP
	153	return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
	154	ctty_pgrp == pgrp);
	155	#else
c9c38b73	156	return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
c9c38b73	157	ctty_pgrp == pgrp));
7d132853	158	#endif
c9c38b73	159	}
	160
	161	static void
	162	draw_progress_meter()
	163	{
	164	static const char spaces[] = " "
	165	" "
	166	" "
	167	" "
	168	" "
	169	" ";
	170	static const char prefixes[] = " KMGTP";
	171	struct timeval now, td, wait;
	172	off_t cursize, abbrevsize, bytespersec;
	173	double elapsed;
	174	int ratio, remaining, i, ai, bi, nspaces;
	175	char buf[512];
	176
	177	if (foregroundproc() == 0)
	178	return;
	179
	180	(void) gettimeofday(&now, (struct timezone *) 0);
	181	cursize = *statbytes;
	182	if (totalbytes != 0) {
	183	ratio = 100.0 * cursize / totalbytes;
	184	ratio = MAX(ratio, 0);
	185	ratio = MIN(ratio, 100);
	186	} else
	187	ratio = 100;
	188
	189	abbrevsize = cursize;
	190	for (ai = 0; abbrevsize >= 10000 && ai < sizeof(prefixes); ai++)
	191	abbrevsize >>= 10;
	192
	193	timersub(&now, &lastupdate, &wait);
	194	if (cursize > lastsize) {
	195	lastupdate = now;
	196	lastsize = cursize;
	197	wait.tv_sec = 0;
	198	}
	199	timersub(&now, &start, &td);
	200	elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
	201
	202	bytespersec = 0;
	203	if (cursize > 0) {
	204	bytespersec = cursize;
	205	if (elapsed > 0.0)
	206	bytespersec /= elapsed;
	207	}
	208	for (bi = 1; bytespersec >= 1024000 && bi < sizeof(prefixes); bi++)
	209	bytespersec >>= 10;
	210
	211	nspaces = MIN(get_tty_width() - 79, sizeof(spaces) - 1);
	212
115dc20f	213	#ifdef HAVE_LONG_LONG_INT
c9c38b73	214	snprintf(buf, sizeof(buf),
	215	"\r%-45.45s%.*s%3d%% %4lld%c%c %3lld.%01d%cB/s",
	216	curfile,
	217	nspaces,
	218	spaces,
	219	ratio,
	220	(long long)abbrevsize,
	221	prefixes[ai],
	222	ai == 0 ? ' ' : 'B',
	223	(long long)(bytespersec / 1024),
	224	(int)((bytespersec % 1024) * 10 / 1024),
	225	prefixes[bi]
	226	);
115dc20f	227	#else
	228	/* XXX: Handle integer overflow? */
	229	snprintf(buf, sizeof(buf),
	230	"\r%-45.45s%.*s%3d%% %4lu%c%c %3lu.%01d%cB/s",
	231	curfile,
	232	nspaces,
	233	spaces,
	234	ratio,
	235	(u_long)abbrevsize,
	236	prefixes[ai],
	237	ai == 0 ? ' ' : 'B',
	238	(u_long)(bytespersec / 1024),
	239	(int)((bytespersec % 1024) * 10 / 1024),
	240	prefixes[bi]
	241	);
	242	#endif
c9c38b73	243
	244	if (cursize <= 0 \|\| elapsed <= 0.0 \|\| cursize > totalbytes) {
	245	snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
	246	" --:-- ETA");
	247	} else if (wait.tv_sec >= STALLTIME) {
	248	snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
	249	" - stalled -");
	250	} else {
	251	if (cursize != totalbytes)
	252	remaining = (int)(totalbytes / (cursize / elapsed) -
	253	elapsed);
	254	else
	255	remaining = elapsed;
	256
	257	i = remaining / 3600;
	258	if (i)
	259	snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
	260	"%2d:", i);
	261	else
	262	snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
	263	" ");
	264	i = remaining % 3600;
	265	snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
	266	"%02d:%02d%s", i / 60, i % 60,
	267	(cursize != totalbytes) ? " ETA" : " ");
	268	}
	269	atomicio(write, fileno(stdout), buf, strlen(buf));
	270	}
	271
	272	static int
	273	get_tty_width(void)
	274	{
	275	struct winsize winsize;
	276
	277	if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
	278	return (winsize.ws_col ? winsize.ws_col : 80);
	279	else
	280	return (80);
	281	}