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NetBSD/usr.bin/ftp/util.c
lukem 3b5054739d Features: 
* support remglobbing of auto_fetch arguments
* new flag - '-e'; disable editing
* "page file" == "get file |${PAGER-less}"

Bugfixes/cleanup:
* consistently use a trailing '.' on messages
* code cleanup, including buffer overrun fixes, use puts
  and putchar in places, etc (inspired by OpenBSD mods)
* disable progress bar when local-file is a pipe or '-'
* skip \r in http headers
* fix remote ftpd slash bug more elegantly (so it works with ////)
* abort_remote(): check if cout==NULL before using it. should fix [bin/3273]
* fixed up cosmetic problems when complete_remote() generated errors from the
  remote server (such as "no files found", "login with user and pass", ...)
  done by adding extra argument to remglob(), which is a pointer to an error
  buffer to put messages in rather than printing to stdout.
1997-03-13 06:23:11 +00:00

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/* $NetBSD: util.c,v 1.5 1997/03/13 06:23:21 lukem Exp $ */
/*
* Copyright (c) 1985, 1989, 1993, 1994
* 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.
*/
#ifndef lint
static char rcsid[] = "$NetBSD: util.c,v 1.5 1997/03/13 06:23:21 lukem Exp $";
#endif /* not lint */
/*
* FTP User Program -- Misc support routines
*/
#include <sys/ioctl.h>
#include <sys/time.h>
#include <arpa/ftp.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <glob.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "ftp_var.h"
#include "pathnames.h"
/*
* Connect to peer server and
* auto-login, if possible.
*/
void
setpeer(argc, argv)
int argc;
char *argv[];
{
char *host;
short port;
if (connected) {
printf("Already connected to %s, use close first.\n",
hostname);
code = -1;
return;
}
if (argc < 2)
(void)another(&argc, &argv, "to");
if (argc < 2 || argc > 3) {
printf("usage: %s host-name [port]\n", argv[0]);
code = -1;
return;
}
port = ftpport;
if (argc > 2) {
port = atoi(argv[2]);
if (port <= 0) {
printf("%s: bad port number '%s'.\n", argv[1], argv[2]);
printf("usage: %s host-name [port]\n", argv[0]);
code = -1;
return;
}
port = htons(port);
}
host = hookup(argv[1], port);
if (host) {
int overbose;
connected = 1;
/*
* Set up defaults for FTP.
*/
(void)strcpy(typename, "ascii"), type = TYPE_A;
curtype = TYPE_A;
(void)strcpy(formname, "non-print"), form = FORM_N;
(void)strcpy(modename, "stream"), mode = MODE_S;
(void)strcpy(structname, "file"), stru = STRU_F;
(void)strcpy(bytename, "8"), bytesize = 8;
if (autologin)
(void)login(argv[1]);
overbose = verbose;
if (debug == 0)
verbose = -1;
if (command("SYST") == COMPLETE && overbose) {
char *cp, c;
c = 0;
cp = strchr(reply_string+4, ' ');
if (cp == NULL)
cp = strchr(reply_string+4, '\r');
if (cp) {
if (cp[-1] == '.')
cp--;
c = *cp;
*cp = '\0';
}
printf("Remote system type is %s.\n", reply_string + 4);
if (cp)
*cp = c;
}
if (!strncmp(reply_string, "215 UNIX Type: L8", 17)) {
if (proxy)
unix_proxy = 1;
else
unix_server = 1;
/*
* Set type to 0 (not specified by user),
* meaning binary by default, but don't bother
* telling server. We can use binary
* for text files unless changed by the user.
*/
type = 0;
(void)strcpy(typename, "binary");
if (overbose)
printf("Using %s mode to transfer files.\n",
typename);
} else {
if (proxy)
unix_proxy = 0;
else
unix_server = 0;
if (overbose &&
!strncmp(reply_string, "215 TOPS20", 10))
puts(
"Remember to set tenex mode when transferring binary files from this machine.");
}
verbose = overbose;
}
}
/*
* `another' gets another argument, and stores the new argc and argv.
* It reverts to the top level (via main.c's intr()) on EOF/error.
*
* Returns false if no new arguments have been added.
*/
int
another(pargc, pargv, prompt)
int *pargc;
char ***pargv;
const char *prompt;
{
int len = strlen(line), ret;
if (len >= sizeof(line) - 3) {
puts("sorry, arguments too long.");
intr();
}
printf("(%s) ", prompt);
line[len++] = ' ';
if (fgets(&line[len], sizeof(line) - len, stdin) == NULL)
intr();
len += strlen(&line[len]);
if (len > 0 && line[len - 1] == '\n')
line[len - 1] = '\0';
makeargv();
ret = margc > *pargc;
*pargc = margc;
*pargv = margv;
return (ret);
}
/*
* glob files given in argv[] from the remote server.
* if errbuf isn't NULL, store error messages there instead
* of writing to the screen.
*/
char *
remglob(argv, doswitch, errbuf)
char *argv[];
int doswitch;
char **errbuf;
{
char temp[MAXPATHLEN];
static char buf[MAXPATHLEN];
static FILE *ftemp = NULL;
static char **args;
int oldverbose, oldhash, fd;
char *cp, *mode;
if (!mflag) {
if (!doglob)
args = NULL;
else {
if (ftemp) {
(void)fclose(ftemp);
ftemp = NULL;
}
}
return (NULL);
}
if (!doglob) {
if (args == NULL)
args = argv;
if ((cp = *++args) == NULL)
args = NULL;
return (cp);
}
if (ftemp == NULL) {
(void)snprintf(temp, sizeof(temp), "%s%s", _PATH_TMP, TMPFILE);
if ((fd = mkstemp(temp)) < 0) {
warn("unable to create temporary file %s", temp);
return (NULL);
}
close(fd);
oldverbose = verbose;
verbose = (errbuf != NULL) ? -1 : 0;
oldhash = hash;
hash = 0;
if (doswitch)
pswitch(!proxy);
for (mode = "w"; *++argv != NULL; mode = "a")
recvrequest("NLST", temp, *argv, mode, 0);
if ((code / 100) != COMPLETE) {
if (errbuf != NULL)
*errbuf = reply_string;
}
if (doswitch)
pswitch(!proxy);
verbose = oldverbose;
hash = oldhash;
ftemp = fopen(temp, "r");
(void)unlink(temp);
if (ftemp == NULL) {
if (errbuf == NULL)
puts("can't find list of remote files, oops.");
else
*errbuf =
"can't find list of remote files, oops.";
return (NULL);
}
}
if (fgets(buf, sizeof(buf), ftemp) == NULL) {
(void)fclose(ftemp);
ftemp = NULL;
return (NULL);
}
if ((cp = strchr(buf, '\n')) != NULL)
*cp = '\0';
return (buf);
}
int
confirm(cmd, file)
const char *cmd, *file;
{
char line[BUFSIZ];
if (!interactive || confirmrest)
return (1);
printf("%s %s? ", cmd, file);
(void)fflush(stdout);
if (fgets(line, sizeof(line), stdin) == NULL)
return (0);
switch (tolower(*line)) {
case 'n':
return (0);
case 'p':
interactive = 0;
puts("Interactive mode: off.");
break;
case 'a':
confirmrest = 1;
printf("Prompting off for duration of %s.\n", cmd);
break;
}
return (1);
}
/*
* Glob a local file name specification with
* the expectation of a single return value.
* Can't control multiple values being expanded
* from the expression, we return only the first.
*/
int
globulize(cpp)
char **cpp;
{
glob_t gl;
int flags;
if (!doglob)
return (1);
flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE|GLOB_TILDE;
memset(&gl, 0, sizeof(gl));
if (glob(*cpp, flags, NULL, &gl) ||
gl.gl_pathc == 0) {
warnx("%s: not found", *cpp);
globfree(&gl);
return (0);
}
*cpp = strdup(gl.gl_pathv[0]); /* XXX - wasted memory */
globfree(&gl);
return (1);
}
/*
* determine size of remote file
*/
off_t
remotesize(file, noisy)
const char *file;
int noisy;
{
int overbose;
off_t size;
overbose = verbose;
size = -1;
if (debug == 0)
verbose = -1;
if (command("SIZE %s", file) == COMPLETE)
sscanf(reply_string, "%*s %qd", &size);
else if (noisy && debug == 0)
puts(reply_string);
verbose = overbose;
return (size);
}
/*
* determine last modification time (in GMT) of remote file
*/
time_t
remotemodtime(file, noisy)
const char *file;
int noisy;
{
int overbose;
time_t rtime;
overbose = verbose;
rtime = -1;
if (debug == 0)
verbose = -1;
if (command("MDTM %s", file) == COMPLETE) {
struct tm timebuf;
int yy, mo, day, hour, min, sec;
sscanf(reply_string, "%*s %04d%02d%02d%02d%02d%02d", &yy, &mo,
&day, &hour, &min, &sec);
memset(&timebuf, 0, sizeof(timebuf));
timebuf.tm_sec = sec;
timebuf.tm_min = min;
timebuf.tm_hour = hour;
timebuf.tm_mday = day;
timebuf.tm_mon = mo - 1;
timebuf.tm_year = yy - 1900;
timebuf.tm_isdst = -1;
rtime = mktime(&timebuf);
if (rtime == -1 && (noisy || debug != 0))
printf("Can't convert %s to a time.\n", reply_string);
else
rtime += timebuf.tm_gmtoff; /* conv. local -> GMT */
} else if (noisy && debug == 0)
puts(reply_string);
verbose = overbose;
return (rtime);
}
void
updateprogressmeter()
{
progressmeter(0);
}
/*
* Display a transfer progress bar if progress is non-zero.
* SIGALRM is hijacked for use by this function.
* - Before the transfer, set filesize to size of file (or -1 if unknown),
* and call with flag = -1. This starts the once per second timer,
* and a call to updateprogressmeter() upon SIGALRM.
* - During the transfer, updateprogressmeter will call progressmeter
* with flag = 0
* - After the transfer, call with flag = 1
*/
static struct timeval start;
void
progressmeter(flag)
int flag;
{
/*
* List of order of magnitude prefixes.
* The last is `P', as 2^64 = 16384 Petabytes
*/
static const char prefixes[] = " KMGTP";
static struct timeval lastupdate;
static off_t lastsize;
struct timeval now, td, wait;
off_t cursize, abbrevsize;
double elapsed;
int ratio, barlength, i, remaining;
char buf[256];
if (flag == -1) {
(void)gettimeofday(&start, (struct timezone *)0);
lastupdate = start;
lastsize = restart_point;
}
(void)gettimeofday(&now, (struct timezone *)0);
if (!progress || filesize <= 0)
return;
cursize = bytes + restart_point;
ratio = cursize * 100 / filesize;
ratio = MAX(ratio, 0);
ratio = MIN(ratio, 100);
snprintf(buf, sizeof(buf), "\r%3d%% ", ratio);
barlength = ttywidth - 30;
if (barlength > 0) {
i = barlength * ratio / 100;
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
"|%.*s%*s|", i,
"*****************************************************************************"
"*****************************************************************************",
barlength - i, "");
}
i = 0;
abbrevsize = cursize;
while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
i++;
abbrevsize >>= 10;
}
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
" %5qd %c%c ", abbrevsize, prefixes[i],
prefixes[i] == ' ' ? ' ' : 'B');
timersub(&now, &lastupdate, &wait);
if (cursize > lastsize) {
lastupdate = now;
lastsize = cursize;
if (wait.tv_sec >= STALLTIME) { /* fudge out stalled time */
start.tv_sec += wait.tv_sec;
start.tv_usec += wait.tv_usec;
}
wait.tv_sec = 0;
}
timersub(&now, &start, &td);
elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
if (bytes <= 0 || elapsed <= 0.0) {
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 {
remaining = (int)((filesize - restart_point) /
(bytes / elapsed) - 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 ETA", i / 60, i % 60);
}
(void)write(STDOUT_FILENO, buf, strlen(buf));
if (flag == -1) {
(void)signal(SIGALRM, updateprogressmeter);
alarmtimer(1); /* set alarm timer for 1 Hz */
} else if (flag == 1) {
alarmtimer(0);
(void)putchar('\n');
}
fflush(stdout);
}
/*
* Display transfer statistics.
* Requires start to be initialised by progressmeter(-1),
* direction to be defined by xfer routines, and filesize and bytes
* to be updated by xfer routines
* If siginfo is nonzero, an ETA is displayed, and the output goes to STDERR
* instead of STDOUT.
*/
void
ptransfer(siginfo)
int siginfo;
{
struct timeval now, td;
double elapsed;
off_t bs;
int meg, remaining, hh;
char buf[100];
if (!verbose && !siginfo)
return;
(void)gettimeofday(&now, (struct timezone *)0);
timersub(&now, &start, &td);
elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
bs = bytes / (elapsed == 0.0 ? 1 : elapsed);
meg = 0;
if (bs > (1024 * 1024))
meg = 1;
(void)snprintf(buf, sizeof(buf),
"%qd byte%s %s in %.2f seconds (%.2f %sB/s)\n",
bytes, bytes == 1 ? "" : "s", direction, elapsed,
bs / (1024.0 * (meg ? 1024.0 : 1.0)), meg ? "M" : "K");
if (siginfo && bytes > 0 && elapsed > 0.0 && filesize >= 0) {
remaining = (int)((filesize - restart_point) /
(bytes / elapsed) - elapsed);
hh = remaining / 3600;
remaining %= 3600;
snprintf(buf + strlen(buf) - 1, sizeof(buf) - strlen(buf),
" ETA: %02d:%02d:%02d\n", hh, remaining / 60,
remaining % 60);
}
(void)write(siginfo ? STDERR_FILENO : STDOUT_FILENO, buf, strlen(buf));
}
/*
* List words in stringlist, vertically arranged
*/
void
list_vertical(sl)
StringList *sl;
{
int i, j, w;
int columns, width, lines, items;
char *p;
width = items = 0;
for (i = 0 ; i < sl->sl_cur ; i++) {
w = strlen(sl->sl_str[i]);
if (w > width)
width = w;
}
width = (width + 8) &~ 7;
columns = ttywidth / width;
if (columns == 0)
columns = 1;
lines = (sl->sl_cur + columns - 1) / columns;
for (i = 0; i < lines; i++) {
for (j = 0; j < columns; j++) {
p = sl->sl_str[j * lines + i];
if (p)
fputs(p, stdout);
if (j * lines + i + lines >= sl->sl_cur) {
putchar('\n');
break;
}
w = strlen(p);
while (w < width) {
w = (w + 8) &~ 7;
(void)putchar('\t');
}
}
}
}
/*
* Update the global ttywidth value, using TIOCGWINSZ.
*/
void
setttywidth(a)
int a;
{
struct winsize winsize;
if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
ttywidth = winsize.ws_col;
else
ttywidth = 80;
}
/*
* Set the SIGALRM interval timer for wait seconds, 0 to disable.
*/
void
alarmtimer(wait)
int wait;
{
struct itimerval itv;
itv.it_value.tv_sec = wait;
itv.it_value.tv_usec = 0;
itv.it_interval = itv.it_value;
setitimer(ITIMER_REAL, &itv, NULL);
}
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