/* $NetBSD: util.c,v 1.78 1999/10/13 02:47:54 lukem Exp $ */ /*- * Copyright (c) 1997-1999 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. 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 #ifndef lint __RCSID("$NetBSD: util.c,v 1.78 1999/10/13 02:47:54 lukem Exp $"); #endif /* not lint */ /* * FTP User Program -- Misc support routines */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ftp_var.h" /* * Connect to peer server and * auto-login, if possible. */ void setpeer(argc, argv) int argc; char *argv[]; { char *host; char *port; 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) { fprintf(ttyout, "usage: %s host-name [port]\n", argv[0]); code = -1; return; } if (gatemode) port = gateport; else port = ftpport; if (argc > 2) port = strdup(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) { int overbose; 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); 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'; } 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); } verbose = overbose; } } /* * login to remote host, using given username & password if supplied */ int ftp_login(host, user, pass) const char *host; const char *user, *pass; { char tmp[80]; const char *acct; struct passwd *pw; int n, aflag, rval, freeuser, freepass, freeacct, len; acct = NULL; aflag = rval = freeuser = freepass = freeacct = 0; /* * Set up arguments for an anonymous FTP session, if necessary. */ if (anonftp) { /* * Set up anonymous login password. */ if ((pass = getenv("FTPANONPASS")) == NULL) { char *anonpass; if ((pass = getlogin()) == NULL) { if ((pw = getpwuid(getuid())) == NULL) pass = "anonymous"; else pass = pw->pw_name; } /* * Every anonymous FTP server I've encountered * will accept the string "username@", and will * append the hostname itself. We do this by default * since many servers are picky about not having * a FQDN in the anonymous password. * - thorpej@netbsd.org */ len = strlen(pass) + 2; anonpass = xmalloc(len); (void)strlcpy(anonpass, pass, len); (void)strlcat(anonpass, "@", len); pass = anonpass; freepass = 1; } user = "anonymous"; /* as per RFC 1635 */ } 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) { const char *myname = getlogin(); if (myname == NULL && (pw = getpwuid(getuid())) != NULL) myname = pw->pw_name; if (myname) fprintf(ttyout, "Name (%s:%s): ", host, myname); 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 = myname; 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; if (proxy) goto cleanup_ftp_login; connected = -1; for (n = 0; n < macnum; ++n) { if (!strcmp("init", macros[n].mac_name)) { (void)strlcpy(line, "$init", sizeof(line)); makeargv(); domacro(margc, margv); break; } } 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 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) { 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(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, len; 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) { 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; hash = 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; 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(pattern) 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(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) { char *cp, *ep; cp = strchr(reply_string, ' '); if (cp != NULL) { cp++; #ifndef NO_QUAD size = strtoq(cp, &ep, 10); #else size = strtol(cp, &ep, 10); #endif if (*ep != '\0' && !isspace((unsigned char)*ep)) size = -1; } } else if (noisy && debug == 0) { fputs(reply_string, ttyout); putc('\n', ttyout); } 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; int ocode; overbose = verbose; ocode = code; 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 - TM_YEAR_BASE; timebuf.tm_isdst = -1; rtime = timegm(&timebuf); if (rtime == -1 && (noisy || debug != 0)) fprintf(ttyout, "Can't convert %s to a time.\n", reply_string); } else if (noisy && debug == 0) { fputs(reply_string, ttyout); putc('\n', ttyout); } verbose = overbose; if (rtime == -1) code = ocode; return (rtime); } #ifndef NO_PROGRESS /* * return non-zero if we're the current foreground process */ int foregroundproc() { static pid_t pgrp = -1; if (pgrp == -1) pgrp = getpgrp(); return (tcgetpgrp(fileno(ttyout)) == pgrp); } static void updateprogressmeter __P((int)); /* * SIGALRM handler to update the progress meter */ static void updateprogressmeter(dummy) int dummy; { int oerrno = errno; progressmeter(0); errno = oerrno; } #endif /* NO_PROGRESS */ /* * List of order of magnitude prefixes. * The last is `P', as 2^64 = 16384 Petabytes */ static const char prefixes[] = " KMGTP"; /* * 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; static struct timeval lastupdate; #define BUFLEFT (sizeof(buf) - len) void progressmeter(flag) int flag; { static off_t lastsize; #ifndef NO_PROGRESS struct timeval now, td, wait; off_t cursize, abbrevsize, bytespersec; double elapsed; int ratio, barlength, i, len, remaining; /* * Work variables for progress bar. * * XXX: if the format of the progress bar changes * (especially the number of characters in the * `static' portion of it), be sure to update * these appropriately. */ char buf[256]; /* workspace for progress bar */ #define BAROVERHEAD 43 /* non `*' portion of progress bar */ /* * stars should contain at least * sizeof(buf) - BAROVERHEAD entries */ const char stars[] = "*****************************************************************************" "*****************************************************************************" "*****************************************************************************"; #endif if (flag == -1) { (void)gettimeofday(&start, NULL); lastupdate = start; lastsize = restart_point; } #ifndef NO_PROGRESS len = 0; if (!progress || filesize <= 0) return; (void)gettimeofday(&now, NULL); cursize = bytes + restart_point; timersub(&now, &lastupdate, &wait); if (cursize > lastsize) { lastupdate = now; lastsize = cursize; wait.tv_sec = 0; } /* * print progress bar only if we are foreground process. */ if (! foregroundproc()) return; ratio = (int)((double)cursize * 100.0 / (double)filesize); ratio = MAX(ratio, 0); ratio = MIN(ratio, 100); len += snprintf(buf + len, BUFLEFT, "\r%3d%% ", ratio); /* * calculate the length of the `*' bar, ensuring that * the number of stars won't exceed the buffer size */ barlength = MIN(sizeof(buf) - 1, ttywidth) - BAROVERHEAD; if (barlength > 0) { i = barlength * ratio / 100; len += snprintf(buf + len, BUFLEFT, "|%.*s%*s|", i, stars, barlength - i, ""); } abbrevsize = cursize; for (i = 0; abbrevsize >= 100000 && i < sizeof(prefixes); i++) abbrevsize >>= 10; len += snprintf(buf + len, BUFLEFT, #ifndef NO_QUAD " %5lld %c%c ", (long long)abbrevsize, #else " %5ld %c%c ", (long)abbrevsize, #endif prefixes[i], i == 0 ? ' ' : 'B'); timersub(&now, &start, &td); elapsed = td.tv_sec + (td.tv_usec / 1000000.0); bytespersec = 0; if (bytes > 0) { bytespersec = bytes; if (elapsed > 0.0) bytespersec /= elapsed; } for (i = 1; bytespersec >= 1024000 && i < sizeof(prefixes); i++) bytespersec >>= 10; len += snprintf(buf + len, BUFLEFT, #ifndef NO_QUAD " %3lld.%02d %cB/s ", (long long)bytespersec / 1024, #else " %3ld.%02d %cB/s ", (long)bytespersec / 1024, #endif (int)((bytespersec % 1024) * 100 / 1024), prefixes[i]); if (bytes <= 0 || elapsed <= 0.0 || cursize > filesize) { len += snprintf(buf + len, BUFLEFT, " --:-- ETA"); } else if (wait.tv_sec >= STALLTIME) { len += snprintf(buf + len, BUFLEFT, " - stalled -"); } else { remaining = (int) ((filesize - restart_point) / (bytes / elapsed) - elapsed); if (remaining >= 100 * SECSPERHOUR) len += snprintf(buf + len, BUFLEFT, " --:-- ETA"); else { i = remaining / SECSPERHOUR; if (i) len += snprintf(buf + len, BUFLEFT, "%2d:", i); else len += snprintf(buf + len, BUFLEFT, " "); i = remaining % SECSPERHOUR; len += snprintf(buf + len, BUFLEFT, "%02d:%02d ETA", i / 60, i % 60); } } if (flag == 1) len += snprintf(buf + len, BUFLEFT, "\n"); (void)write(fileno(ttyout), buf, len); if (flag == -1) { (void)xsignal_restart(SIGALRM, updateprogressmeter, 1); alarmtimer(1); /* set alarm timer for 1 Hz */ } else if (flag == 1) { (void)xsignal(SIGALRM, SIG_DFL); alarmtimer(0); } #endif /* !NO_PROGRESS */ } /* * 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 ttyout. */ void ptransfer(siginfo) int siginfo; { struct timeval now, td, wait; double elapsed; off_t bytespersec; int remaining, hh, i, len; char buf[256]; /* Work variable for transfer status. */ if (!verbose && !progress && !siginfo) return; (void)gettimeofday(&now, NULL); timersub(&now, &start, &td); elapsed = td.tv_sec + (td.tv_usec / 1000000.0); bytespersec = 0; if (bytes > 0) { bytespersec = bytes; if (elapsed > 0.0) bytespersec /= elapsed; } len = 0; len += snprintf(buf + len, BUFLEFT, #ifndef NO_QUAD "%lld byte%s %s in ", (long long)bytes, #else "%ld byte%s %s in ", (long)bytes, #endif bytes == 1 ? "" : "s", direction); remaining = (int)elapsed; if (remaining > SECSPERDAY) { int days; days = remaining / SECSPERDAY; remaining %= SECSPERDAY; len += snprintf(buf + len, BUFLEFT, "%d day%s ", days, days == 1 ? "" : "s"); } hh = remaining / SECSPERHOUR; remaining %= SECSPERHOUR; if (hh) len += snprintf(buf + len, BUFLEFT, "%2d:", hh); len += snprintf(buf + len, BUFLEFT, "%02d:%02d ", remaining / 60, remaining % 60); for (i = 1; bytespersec >= 1024000 && i < sizeof(prefixes); i++) bytespersec >>= 10; len += snprintf(buf + len, BUFLEFT, #ifndef NO_QUAD "(%lld.%02d %cB/s)", (long long)bytespersec / 1024, #else "(%ld.%02d %cB/s)", (long)bytespersec / 1024, #endif (int)((bytespersec % 1024) * 100 / 1024), prefixes[i]); if (siginfo && bytes > 0 && elapsed > 0.0 && filesize >= 0 && bytes + restart_point <= filesize) { remaining = (int)((filesize - restart_point) / (bytes / elapsed) - elapsed); hh = remaining / SECSPERHOUR; remaining %= SECSPERHOUR; len += snprintf(buf + len, BUFLEFT, " ETA: "); if (hh) len += snprintf(buf + len, BUFLEFT, "%2d:", hh); len += snprintf(buf + len, BUFLEFT, "%02d:%02d", remaining / 60, remaining % 60); timersub(&now, &lastupdate, &wait); if (wait.tv_sec >= STALLTIME) len += snprintf(buf + len, BUFLEFT, " (stalled)"); } len += snprintf(buf + len, BUFLEFT, "\n"); (void)write(siginfo ? STDERR_FILENO : fileno(ttyout), buf, len); } /* * SIG{INFO,QUIT} handler to print transfer stats if a transfer is in progress */ void psummary(notused) int notused; { int oerrno = errno; if (bytes > 0) { if (fromatty) write(fileno(ttyout), "\n", 1); ptransfer(1); } errno = oerrno; } /* * 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, 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(a) 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(sig) 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); } } /* * 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); } /* * Setup or cleanup EditLine structures */ #ifndef NO_EDITCOMPLETE void controlediting() { if (editing && el == NULL && hist == NULL) { HistEvent ev; int editmode; el = el_init(__progname, 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 function */ /* 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(arg) 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(sock) 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(dst, dstlen, src, srclen) 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'; } /* * Determine if given string is an IPv6 address or not. * Return 1 for yes, 0 for no */ int isipv6addr(addr) const char *addr; { int rv = 0; #ifdef INET6 struct sockaddr_in6 su_sin6; rv = inet_pton(AF_INET6, addr, &su_sin6.sin6_addr); if (debug) fprintf(ttyout, "isipv6addr: got %d for %s\n", rv, addr); #endif return rv; } /* * Internal version of connect(2); sets socket buffer sizes first. */ int xconnect(sock, name, namelen) int sock; const struct sockaddr *name; int namelen; { setupsockbufsize(sock); return (connect(sock, name, namelen)); } /* * Internal version of listen(2); sets socket buffer sizes first. */ int xlisten(sock, backlog) int sock, backlog; { setupsockbufsize(sock); return (listen(sock, backlog)); } /* * malloc() with inbuilt error checking */ void * xmalloc(size) size_t size; { void *p; p = malloc(size); if (p == NULL) err(1, "Unable to allocate %ld bytes of memory", (long)size); return (p); } /* * strdup() with inbuilt error checking */ char * xstrdup(str) 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); } /* * Install a POSIX signal handler, allowing the invoker to set whether * the signal should be restartable or not */ sig_t xsignal_restart(sig, func, restartable) int sig; void (*func) __P((int)); int restartable; { struct sigaction act, oact; act.sa_handler = func; sigemptyset(&act.sa_mask); #if defined(SA_RESTART) /* 4.4BSD, Posix(?), SVR4 */ act.sa_flags = restartable ? SA_RESTART : 0; #elif defined(SA_INTERRUPT) /* SunOS 4.x */ act.sa_flags = restartable ? 0 : SA_INTERRUPT; #else #error "system must have SA_RESTART or SA_INTERRUPT" #endif if (sigaction(sig, &act, &oact) < 0) return (SIG_ERR); return (oact.sa_handler); } /* * Install a signal handler with the `restartable' flag set dependent upon * which signal is being set. (This is a wrapper to xsignal_restart()) */ sig_t xsignal(sig, func) int sig; void (*func) __P((int)); { int restartable; /* * Some signals print output or change the state of the process. * There should be restartable, so that reads and writes are * not affected. Some signals should cause program flow to change; * these signals should not be restartable, so that the system call * will return with EINTR, and the program will go do something * different. If the signal handler calls longjmp() or siglongjmp(), * it doesn't matter if it's restartable. */ switch(sig) { #ifdef SIGINFO case SIGINFO: #endif case SIGQUIT: case SIGUSR1: case SIGUSR2: case SIGWINCH: restartable = 1; break; case SIGALRM: case SIGINT: case SIGPIPE: restartable = 0; break; default: /* * This is unpleasant, but I don't know what would be better. * Right now, this "can't happen" */ errx(1, "xsignal_restart called with signal %d\n", sig); } return(xsignal_restart(sig, func, restartable)); }