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NetBSD/usr.bin/ftp/util.c
lukem 1aa9c35970 If an ftp auto-fetch transfer is interrupted by SIGINT (usually ^C), 
exit with 130 instead of 1 (or rarely, 0).
This allows an ftp auto-fetch in a shell loop to correctly terminate the loop.
Should fix PR [pkg/26351], and possibly others.
2004-07-20 10:40:21 +00:00

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/* $NetBSD: util.c,v 1.116 2004/07/20 10:40:22 lukem Exp $ */
/*-
* Copyright (c) 1997-2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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. 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 <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: util.c,v 1.116 2004/07/20 10:40:22 lukem Exp $");
#endif /* not lint */
/*
* FTP User Program -- Misc support routines
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/ftp.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <glob.h>
#include <signal.h>
#include <limits.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <time.h>
#include <tzfile.h>
#include <unistd.h>
#include "ftp_var.h"
/*
* Connect to peer server and auto-login, if possible.
*/
void
setpeer(int argc, char *argv[])
{
char *host;
char *port;
if (argc == 0)
goto usage;
if (connected) {
fprintf(ttyout, "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) {
usage:
fprintf(ttyout, "usage: %s host-name [port]\n", argv[0]);
code = -1;
return;
}
if (gatemode)
port = gateport;
else
port = ftpport;
if (argc > 2)
port = argv[2];
if (gatemode) {
if (gateserver == NULL || *gateserver == '\0')
errx(1, "gateserver not defined (shouldn't happen)");
host = hookup(gateserver, port);
} else
host = hookup(argv[1], port);
if (host) {
if (gatemode && verbose) {
fprintf(ttyout,
"Connecting via pass-through server %s\n",
gateserver);
}
connected = 1;
/*
* Set up defaults for FTP.
*/
(void)strlcpy(typename, "ascii", sizeof(typename));
type = TYPE_A;
curtype = TYPE_A;
(void)strlcpy(formname, "non-print", sizeof(formname));
form = FORM_N;
(void)strlcpy(modename, "stream", sizeof(modename));
mode = MODE_S;
(void)strlcpy(structname, "file", sizeof(structname));
stru = STRU_F;
(void)strlcpy(bytename, "8", sizeof(bytename));
bytesize = 8;
if (autologin)
(void)ftp_login(argv[1], NULL, NULL);
}
}
static void
parse_feat(const char *line)
{
/*
* work-around broken ProFTPd servers that can't
* even obey RFC 2389.
*/
while (*line && isspace((int)*line))
line++;
if (strcasecmp(line, "MDTM") == 0)
features[FEAT_MDTM] = 1;
else if (strncasecmp(line, "MLST", sizeof("MLST") - 1) == 0) {
features[FEAT_MLST] = 1;
} else if (strcasecmp(line, "REST STREAM") == 0)
features[FEAT_REST_STREAM] = 1;
else if (strcasecmp(line, "SIZE") == 0)
features[FEAT_SIZE] = 1;
else if (strcasecmp(line, "TVFS") == 0)
features[FEAT_TVFS] = 1;
}
/*
* Determine the remote system type (SYST) and features (FEAT).
* Call after a successful login (i.e, connected = -1)
*/
void
getremoteinfo(void)
{
int overbose, i;
overbose = verbose;
if (debug == 0)
verbose = -1;
/* determine remote system type */
if (command("SYST") == COMPLETE) {
if (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';
}
fprintf(ttyout, "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)strlcpy(typename, "binary", sizeof(typename));
if (overbose)
fprintf(ttyout,
"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))
fputs(
"Remember to set tenex mode when transferring binary files from this machine.\n",
ttyout);
}
}
/* determine features (if any) */
for (i = 0; i < FEAT_max; i++)
features[i] = -1;
reply_callback = parse_feat;
if (command("FEAT") == COMPLETE) {
for (i = 0; i < FEAT_max; i++) {
if (features[i] == -1)
features[i] = 0;
}
features[FEAT_FEAT] = 1;
} else
features[FEAT_FEAT] = 0;
if (debug) {
#define DEBUG_FEAT(x) fprintf(ttyout, "features[" #x "] = %d\n", features[(x)])
DEBUG_FEAT(FEAT_FEAT);
DEBUG_FEAT(FEAT_MDTM);
DEBUG_FEAT(FEAT_MLST);
DEBUG_FEAT(FEAT_REST_STREAM);
DEBUG_FEAT(FEAT_SIZE);
DEBUG_FEAT(FEAT_TVFS);
#undef DEBUG_FEAT
}
reply_callback = NULL;
verbose = overbose;
}
/*
* Reset the various variables that indicate connection state back to
* disconnected settings.
* The caller is responsible for issuing any commands to the remote server
* to perform a clean shutdown before this is invoked.
*/
void
cleanuppeer(void)
{
if (cout)
(void)fclose(cout);
cout = NULL;
connected = 0;
unix_server = 0;
unix_proxy = 0;
/*
* determine if anonftp was specifically set with -a
* (1), or implicitly set by auto_fetch() (2). in the
* latter case, disable after the current xfer
*/
if (anonftp == 2)
anonftp = 0;
data = -1;
epsv4bad = 0;
if (username)
free(username);
username = NULL;
if (!proxy)
macnum = 0;
}
/*
* Top-level signal handler for interrupted commands.
*/
void
intr(int signo)
{
sigint_raised = 1;
alarmtimer(0);
if (fromatty)
write(fileno(ttyout), "\n", 1);
siglongjmp(toplevel, 1);
}
/*
* Signal handler for lost connections; cleanup various elements of
* the connection state, and call cleanuppeer() to finish it off.
*/
void
lostpeer(int dummy)
{
int oerrno = errno;
alarmtimer(0);
if (connected) {
if (cout != NULL) {
(void)shutdown(fileno(cout), 1+1);
(void)fclose(cout);
cout = NULL;
}
if (data >= 0) {
(void)shutdown(data, 1+1);
(void)close(data);
data = -1;
}
connected = 0;
}
pswitch(1);
if (connected) {
if (cout != NULL) {
(void)shutdown(fileno(cout), 1+1);
(void)fclose(cout);
cout = NULL;
}
connected = 0;
}
proxflag = 0;
pswitch(0);
cleanuppeer();
errno = oerrno;
}
/*
* Login to remote host, using given username & password if supplied.
* Return non-zero if successful.
*/
int
ftp_login(const char *host, const char *user, const char *pass)
{
char tmp[80];
const char *acct;
int n, aflag, rval, freeuser, freepass, freeacct;
acct = NULL;
aflag = rval = freeuser = freepass = freeacct = 0;
if (debug)
fprintf(ttyout, "ftp_login: user `%s' pass `%s' host `%s'\n",
user ? user : "<null>", pass ? pass : "<null>",
host ? host : "<null>");
/*
* Set up arguments for an anonymous FTP session, if necessary.
*/
if (anonftp) {
user = "anonymous"; /* as per RFC 1635 */
pass = getoptionvalue("anonpass");
}
if (user == NULL)
freeuser = 1;
if (pass == NULL)
freepass = 1;
freeacct = 1;
if (ruserpass(host, &user, &pass, &acct) < 0) {
code = -1;
goto cleanup_ftp_login;
}
while (user == NULL) {
if (localname)
fprintf(ttyout, "Name (%s:%s): ", host, localname);
else
fprintf(ttyout, "Name (%s): ", host);
*tmp = '\0';
if (fgets(tmp, sizeof(tmp) - 1, stdin) == NULL) {
fprintf(ttyout, "\nEOF received; login aborted.\n");
clearerr(stdin);
code = -1;
goto cleanup_ftp_login;
}
tmp[strlen(tmp) - 1] = '\0';
freeuser = 0;
if (*tmp == '\0')
user = localname;
else
user = tmp;
}
if (gatemode) {
char *nuser;
int len;
len = strlen(user) + 1 + strlen(host) + 1;
nuser = xmalloc(len);
(void)strlcpy(nuser, user, len);
(void)strlcat(nuser, "@", len);
(void)strlcat(nuser, host, len);
freeuser = 1;
user = nuser;
}
n = command("USER %s", user);
if (n == CONTINUE) {
if (pass == NULL) {
freepass = 0;
pass = getpass("Password:");
}
n = command("PASS %s", pass);
}
if (n == CONTINUE) {
aflag++;
if (acct == NULL) {
freeacct = 0;
acct = getpass("Account:");
}
if (acct[0] == '\0') {
warnx("Login failed.");
goto cleanup_ftp_login;
}
n = command("ACCT %s", acct);
}
if ((n != COMPLETE) ||
(!aflag && acct != NULL && command("ACCT %s", acct) != COMPLETE)) {
warnx("Login failed.");
goto cleanup_ftp_login;
}
rval = 1;
username = xstrdup(user);
if (proxy)
goto cleanup_ftp_login;
connected = -1;
getremoteinfo();
for (n = 0; n < macnum; ++n) {
if (!strcmp("init", macros[n].mac_name)) {
(void)strlcpy(line, "$init", sizeof(line));
makeargv();
domacro(margc, margv);
break;
}
}
updateremotepwd();
cleanup_ftp_login:
if (user != NULL && freeuser)
free((char *)user);
if (pass != NULL && freepass)
free((char *)pass);
if (acct != NULL && freeacct)
free((char *)acct);
return (rval);
}
/*
* `another' gets another argument, and stores the new argc and argv.
* It reverts to the top level (via intr()) on EOF/error.
*
* Returns false if no new arguments have been added.
*/
int
another(int *pargc, char ***pargv, const char *prompt)
{
int len = strlen(line), ret;
if (len >= sizeof(line) - 3) {
fputs("sorry, arguments too long.\n", ttyout);
intr(0);
}
fprintf(ttyout, "(%s) ", prompt);
line[len++] = ' ';
if (fgets(&line[len], sizeof(line) - len, stdin) == NULL) {
clearerr(stdin);
intr(0);
}
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(char *argv[], int doswitch, char **errbuf)
{
char temp[MAXPATHLEN];
static char buf[MAXPATHLEN];
static FILE *ftemp = NULL;
static char **args;
int oldverbose, oldhash, oldprogress, fd, len;
char *cp, *mode;
if (!mflag || !connected) {
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) {
len = strlcpy(temp, tmpdir, sizeof(temp));
if (temp[len - 1] != '/')
(void)strlcat(temp, "/", sizeof(temp));
(void)strlcat(temp, TMPFILE, sizeof(temp));
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;
oldprogress = progress;
hash = 0;
progress = 0;
if (doswitch)
pswitch(!proxy);
for (mode = "w"; *++argv != NULL; mode = "a")
recvrequest("NLST", temp, *argv, mode, 0, 0);
if ((code / 100) != COMPLETE) {
if (errbuf != NULL)
*errbuf = reply_string;
}
if (doswitch)
pswitch(!proxy);
verbose = oldverbose;
hash = oldhash;
progress = oldprogress;
ftemp = fopen(temp, "r");
(void)unlink(temp);
if (ftemp == NULL) {
if (errbuf == NULL)
fputs(
"can't find list of remote files, oops.\n",
ttyout);
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);
}
/*
* 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.
* Returns NULL on error, or a pointer to a buffer containing the filename
* that's the caller's responsiblity to free(3) when finished with.
*/
char *
globulize(const char *pattern)
{
glob_t gl;
int flags;
char *p;
if (!doglob)
return (xstrdup(pattern));
flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_TILDE;
memset(&gl, 0, sizeof(gl));
if (glob(pattern, flags, NULL, &gl) || gl.gl_pathc == 0) {
warnx("%s: not found", pattern);
globfree(&gl);
return (NULL);
}
p = xstrdup(gl.gl_pathv[0]);
globfree(&gl);
return (p);
}
/*
* determine size of remote file
*/
off_t
remotesize(const char *file, int noisy)
{
int overbose, r;
off_t size;
overbose = verbose;
size = -1;
if (debug == 0)
verbose = -1;
if (! features[FEAT_SIZE]) {
if (noisy)
fprintf(ttyout,
"SIZE is not supported by remote server.\n");
goto cleanup_remotesize;
}
r = command("SIZE %s", file);
if (r == COMPLETE) {
char *cp, *ep;
cp = strchr(reply_string, ' ');
if (cp != NULL) {
cp++;
size = STRTOLL(cp, &ep, 10);
if (*ep != '\0' && !isspace((unsigned char)*ep))
size = -1;
}
} else {
if (r == ERROR && code == 500 && features[FEAT_SIZE] == -1)
features[FEAT_SIZE] = 0;
if (noisy && debug == 0) {
fputs(reply_string, ttyout);
putc('\n', ttyout);
}
}
cleanup_remotesize:
verbose = overbose;
return (size);
}
/*
* determine last modification time (in GMT) of remote file
*/
time_t
remotemodtime(const char *file, int noisy)
{
int overbose, ocode, r;
time_t rtime;
overbose = verbose;
ocode = code;
rtime = -1;
if (debug == 0)
verbose = -1;
if (! features[FEAT_MDTM]) {
if (noisy)
fprintf(ttyout,
"MDTM is not supported by remote server.\n");
goto cleanup_parse_time;
}
r = command("MDTM %s", file);
if (r == COMPLETE) {
struct tm timebuf;
char *timestr, *frac;
int yy, mo, day, hour, min, sec;
/*
* time-val = 14DIGIT [ "." 1*DIGIT ]
* YYYYMMDDHHMMSS[.sss]
* mdtm-response = "213" SP time-val CRLF / error-response
*/
timestr = reply_string + 4;
/*
* parse fraction.
* XXX: ignored for now
*/
frac = strchr(timestr, '\r');
if (frac != NULL)
*frac = '\0';
frac = strchr(timestr, '.');
if (frac != NULL)
*frac++ = '\0';
if (strlen(timestr) == 15 && strncmp(timestr, "191", 3) == 0) {
/*
* XXX: Workaround for lame ftpd's that return
* `19100' instead of `2000'
*/
fprintf(ttyout,
"Y2K warning! Incorrect time-val `%s' received from server.\n",
timestr);
timestr++;
timestr[0] = '2';
timestr[1] = '0';
fprintf(ttyout, "Converted to `%s'\n", timestr);
}
if (strlen(timestr) != 14 ||
sscanf(timestr, "%04d%02d%02d%02d%02d%02d",
&yy, &mo, &day, &hour, &min, &sec) != 6) {
bad_parse_time:
fprintf(ttyout, "Can't parse time `%s'.\n", timestr);
goto cleanup_parse_time;
}
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 - TM_YEAR_BASE;
timebuf.tm_isdst = -1;
rtime = timegm(&timebuf);
if (rtime == -1) {
if (noisy || debug != 0)
goto bad_parse_time;
else
goto cleanup_parse_time;
} else if (debug)
fprintf(ttyout, "parsed date as: %s", ctime(&rtime));
} else {
if (r == ERROR && code == 500 && features[FEAT_MDTM] == -1)
features[FEAT_MDTM] = 0;
if (noisy && debug == 0) {
fputs(reply_string, ttyout);
putc('\n', ttyout);
}
}
cleanup_parse_time:
verbose = overbose;
if (rtime == -1)
code = ocode;
return (rtime);
}
/*
* update global `remotepwd', which contains the state of the remote cwd
*/
void
updateremotepwd(void)
{
int overbose, ocode, i;
char *cp;
overbose = verbose;
ocode = code;
if (debug == 0)
verbose = -1;
if (command("PWD") != COMPLETE)
goto badremotepwd;
cp = strchr(reply_string, ' ');
if (cp == NULL || cp[0] == '\0' || cp[1] != '"')
goto badremotepwd;
cp += 2;
for (i = 0; *cp && i < sizeof(remotepwd) - 1; i++, cp++) {
if (cp[0] == '"') {
if (cp[1] == '"')
cp++;
else
break;
}
remotepwd[i] = *cp;
}
remotepwd[i] = '\0';
if (debug)
fprintf(ttyout, "got remotepwd as `%s'\n", remotepwd);
goto cleanupremotepwd;
badremotepwd:
remotepwd[0]='\0';
cleanupremotepwd:
verbose = overbose;
code = ocode;
}
/*
* List words in stringlist, vertically arranged
*/
void
list_vertical(StringList *sl)
{
int i, j, w;
int columns, width, lines;
char *p;
width = 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, ttyout);
if (j * lines + i + lines >= sl->sl_cur) {
putc('\n', ttyout);
break;
}
w = strlen(p);
while (w < width) {
w = (w + 8) &~ 7;
(void)putc('\t', ttyout);
}
}
}
}
/*
* Update the global ttywidth value, using TIOCGWINSZ.
*/
void
setttywidth(int a)
{
struct winsize winsize;
int oerrno = errno;
if (ioctl(fileno(ttyout), TIOCGWINSZ, &winsize) != -1 &&
winsize.ws_col != 0)
ttywidth = winsize.ws_col;
else
ttywidth = 80;
errno = oerrno;
}
/*
* Change the rate limit up (SIGUSR1) or down (SIGUSR2)
*/
void
crankrate(int sig)
{
switch (sig) {
case SIGUSR1:
if (rate_get)
rate_get += rate_get_incr;
if (rate_put)
rate_put += rate_put_incr;
break;
case SIGUSR2:
if (rate_get && rate_get > rate_get_incr)
rate_get -= rate_get_incr;
if (rate_put && rate_put > rate_put_incr)
rate_put -= rate_put_incr;
break;
default:
err(1, "crankrate invoked with unknown signal: %d", sig);
}
}
/*
* Setup or cleanup EditLine structures
*/
#ifndef NO_EDITCOMPLETE
void
controlediting(void)
{
if (editing && el == NULL && hist == NULL) {
HistEvent ev;
int editmode;
el = el_init(getprogname(), stdin, ttyout, stderr);
/* init editline */
hist = history_init(); /* init the builtin history */
history(hist, &ev, H_SETSIZE, 100);/* remember 100 events */
el_set(el, EL_HIST, history, hist); /* use history */
el_set(el, EL_EDITOR, "emacs"); /* default editor is emacs */
el_set(el, EL_PROMPT, prompt); /* set the prompt functions */
el_set(el, EL_RPROMPT, rprompt);
/* add local file completion, bind to TAB */
el_set(el, EL_ADDFN, "ftp-complete",
"Context sensitive argument completion",
complete);
el_set(el, EL_BIND, "^I", "ftp-complete", NULL);
el_source(el, NULL); /* read ~/.editrc */
if ((el_get(el, EL_EDITMODE, &editmode) != -1) && editmode == 0)
editing = 0; /* the user doesn't want editing,
* so disable, and let statement
* below cleanup */
else
el_set(el, EL_SIGNAL, 1);
}
if (!editing) {
if (hist) {
history_end(hist);
hist = NULL;
}
if (el) {
el_end(el);
el = NULL;
}
}
}
#endif /* !NO_EDITCOMPLETE */
/*
* Convert the string `arg' to an int, which may have an optional SI suffix
* (`b', `k', `m', `g'). Returns the number for success, -1 otherwise.
*/
int
strsuftoi(const char *arg)
{
char *cp;
long val;
if (!isdigit((unsigned char)arg[0]))
return (-1);
val = strtol(arg, &cp, 10);
if (cp != NULL) {
if (cp[0] != '\0' && cp[1] != '\0')
return (-1);
switch (tolower((unsigned char)cp[0])) {
case '\0':
case 'b':
break;
case 'k':
val <<= 10;
break;
case 'm':
val <<= 20;
break;
case 'g':
val <<= 30;
break;
default:
return (-1);
}
}
if (val < 0 || val > INT_MAX)
return (-1);
return (val);
}
/*
* Set up socket buffer sizes before a connection is made.
*/
void
setupsockbufsize(int sock)
{
if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size,
sizeof(rcvbuf_size)) < 0)
warn("unable to set sndbuf size %d", sndbuf_size);
if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size,
sizeof(rcvbuf_size)) < 0)
warn("unable to set rcvbuf size %d", rcvbuf_size);
}
/*
* Copy characters from src into dst, \ quoting characters that require it
*/
void
ftpvis(char *dst, size_t dstlen, const char *src, size_t srclen)
{
int di, si;
for (di = si = 0;
src[si] != '\0' && di < dstlen && si < srclen;
di++, si++) {
switch (src[si]) {
case '\\':
case ' ':
case '\t':
case '\r':
case '\n':
case '"':
dst[di++] = '\\';
if (di >= dstlen)
break;
/* FALLTHROUGH */
default:
dst[di] = src[si];
}
}
dst[di] = '\0';
}
/*
* Copy src into buf (which is len bytes long), expanding % sequences.
*/
void
formatbuf(char *buf, size_t len, const char *src)
{
const char *p;
char *p2, *q;
int i, op, updirs, pdirs;
#define ADDBUF(x) do { \
if (i >= len - 1) \
goto endbuf; \
buf[i++] = (x); \
} while (0)
p = src;
for (i = 0; *p; p++) {
if (*p != '%') {
ADDBUF(*p);
continue;
}
p++;
switch (op = *p) {
case '/':
case '.':
case 'c':
p2 = connected ? remotepwd : "";
updirs = pdirs = 0;
/* option to determine fixed # of dirs from path */
if (op == '.' || op == 'c') {
int skip;
q = p2;
while (*p2) /* calc # of /'s */
if (*p2++ == '/')
updirs++;
if (p[1] == '0') { /* print <x> or ... */
pdirs = 1;
p++;
}
if (p[1] >= '1' && p[1] <= '9') {
/* calc # to skip */
skip = p[1] - '0';
p++;
} else
skip = 1;
updirs -= skip;
while (skip-- > 0) {
while ((p2 > q) && (*p2 != '/'))
p2--; /* back up */
if (skip && p2 > q)
p2--;
}
if (*p2 == '/' && p2 != q)
p2++;
}
if (updirs > 0 && pdirs) {
if (i >= len - 5)
break;
if (op == '.') {
ADDBUF('.');
ADDBUF('.');
ADDBUF('.');
} else {
ADDBUF('/');
ADDBUF('<');
if (updirs > 9) {
ADDBUF('9');
ADDBUF('+');
} else
ADDBUF('0' + updirs);
ADDBUF('>');
}
}
for (; *p2; p2++)
ADDBUF(*p2);
break;
case 'M':
case 'm':
for (p2 = connected && username ? username : "-";
*p2 ; p2++) {
if (op == 'm' && *p2 == '.')
break;
ADDBUF(*p2);
}
break;
case 'n':
for (p2 = connected ? username : "-"; *p2 ; p2++)
ADDBUF(*p2);
break;
case '%':
ADDBUF('%');
break;
default: /* display unknown codes literally */
ADDBUF('%');
ADDBUF(op);
break;
}
}
endbuf:
buf[i] = '\0';
}
/*
* Parse `port' into a TCP port number, defaulting to `defport' if `port' is
* an unknown service name. If defport != -1, print a warning upon bad parse.
*/
int
parseport(const char *port, int defport)
{
int rv;
long nport;
char *p, *ep;
p = xstrdup(port);
nport = strtol(p, &ep, 10);
if (*ep != '\0' && ep == p) {
struct servent *svp;
svp = getservbyname(port, "tcp");
if (svp == NULL) {
badparseport:
if (defport != -1)
warnx("Unknown port `%s', using port %d",
port, defport);
rv = defport;
} else
rv = ntohs(svp->s_port);
} else if (nport < 1 || nport > MAX_IN_PORT_T || *ep != '\0')
goto badparseport;
else
rv = nport;
free(p);
return (rv);
}
/*
* Determine if given string is an IPv6 address or not.
* Return 1 for yes, 0 for no
*/
int
isipv6addr(const char *addr)
{
int rv = 0;
#ifdef INET6
struct addrinfo hints, *res;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_INET6;
hints.ai_socktype = SOCK_DGRAM; /*dummy*/
hints.ai_flags = AI_NUMERICHOST;
if (getaddrinfo(addr, "0", &hints, &res) != 0)
rv = 0;
else {
rv = 1;
freeaddrinfo(res);
}
if (debug)
fprintf(ttyout, "isipv6addr: got %d for %s\n", rv, addr);
#endif
return (rv == 1) ? 1 : 0;
}
/*
* Internal version of connect(2); sets socket buffer sizes first and
* handles the syscall being interrupted.
* Returns -1 upon failure (with errno set to the problem), or 0 on success.
*/
int
xconnect(int sock, const struct sockaddr *name, int namelen)
{
int rv;
setupsockbufsize(sock);
rv = connect(sock, name, namelen);
if (rv == -1 && errno == EINTR) {
fd_set connfd;
FD_ZERO(&connfd);
FD_SET(sock, &connfd);
do {
rv = select(sock + 1, NULL, &connfd, NULL, NULL);
} while (rv == -1 && errno == EINTR);
if (rv > 0)
rv = 0;
}
return (rv);
}
/*
* Internal version of listen(2); sets socket buffer sizes first.
*/
int
xlisten(int sock, int backlog)
{
setupsockbufsize(sock);
return (listen(sock, backlog));
}
/*
* malloc() with inbuilt error checking
*/
void *
xmalloc(size_t size)
{
void *p;
p = malloc(size);
if (p == NULL)
err(1, "Unable to allocate %ld bytes of memory", (long)size);
return (p);
}
/*
* sl_init() with inbuilt error checking
*/
StringList *
xsl_init(void)
{
StringList *p;
p = sl_init();
if (p == NULL)
err(1, "Unable to allocate memory for stringlist");
return (p);
}
/*
* sl_add() with inbuilt error checking
*/
void
xsl_add(StringList *sl, char *i)
{
if (sl_add(sl, i) == -1)
err(1, "Unable to add `%s' to stringlist", i);
}
/*
* strdup() with inbuilt error checking
*/
char *
xstrdup(const char *str)
{
char *s;
if (str == NULL)
errx(1, "xstrdup() called with NULL argument");
s = strdup(str);
if (s == NULL)
err(1, "Unable to allocate memory for string copy");
return (s);
}
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