/* $NetBSD: main.c,v 1.113 2008/09/09 00:48:28 gmcgarry Exp $ */ /*- * Copyright (c) 1996-2008 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Luke Mewburn. * * 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 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. */ /* * Copyright (C) 1997 and 1998 WIDE Project. * 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 project 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 PROJECT 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 PROJECT 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 __COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\ The Regents of the University of California. All rights reserved.\ Copyright 1996-2008 The NetBSD Foundation, Inc. All rights reserved"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94"; #else __RCSID("$NetBSD: main.c,v 1.113 2008/09/09 00:48:28 gmcgarry Exp $"); #endif #endif /* not lint */ /* * FTP User Program -- Command Interface. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define GLOBAL /* force GLOBAL decls in ftp_var.h to be declared */ #include "ftp_var.h" #define FTP_PROXY "ftp_proxy" /* env var with FTP proxy location */ #define HTTP_PROXY "http_proxy" /* env var with HTTP proxy location */ #define NO_PROXY "no_proxy" /* env var with list of non-proxied * hosts, comma or space separated */ static void setupoption(char *, char *, char *); int main(int, char *[]); int main(int volatile argc, char **volatile argv) { int ch, rval; struct passwd *pw; char *cp, *ep, *anonuser, *anonpass, *upload_path, *src_addr; int dumbterm, s, isupload; size_t len; socklen_t slen; tzset(); setlocale(LC_ALL, ""); setprogname(argv[0]); sigint_raised = 0; ftpport = "ftp"; httpport = "http"; gateport = NULL; cp = getenv("FTPSERVERPORT"); if (cp != NULL) gateport = cp; else gateport = "ftpgate"; doglob = 1; interactive = 1; autologin = 1; passivemode = 1; activefallback = 1; preserve = 1; verbose = 0; progress = 0; gatemode = 0; data = -1; outfile = NULL; restartautofetch = 0; #ifndef NO_EDITCOMPLETE editing = 0; el = NULL; hist = NULL; #endif bytes = 0; mark = HASHBYTES; rate_get = 0; rate_get_incr = DEFAULTINCR; rate_put = 0; rate_put_incr = DEFAULTINCR; #ifdef INET6 epsv4 = 1; epsv6 = 1; #else epsv4 = 0; epsv6 = 0; #endif epsv4bad = 0; epsv6bad = 0; src_addr = NULL; upload_path = NULL; isupload = 0; reply_callback = NULL; #ifdef INET6 family = AF_UNSPEC; #else family = AF_INET; /* force AF_INET if no INET6 support */ #endif netrc[0] = '\0'; cp = getenv("NETRC"); if (cp != NULL && strlcpy(netrc, cp, sizeof(netrc)) >= sizeof(netrc)) errx(1, "$NETRC `%s': %s", cp, strerror(ENAMETOOLONG)); /* * Get the default socket buffer sizes if we don't already have them. * It doesn't matter which socket we do this to, because on the first * call no socket buffer sizes will have been modified, so we are * guaranteed to get the system defaults. */ s = socket(AF_INET, SOCK_STREAM, 0); if (s == -1) err(1, "Can't create socket to determine default socket sizes"); slen = sizeof(rcvbuf_size); if (getsockopt(s, SOL_SOCKET, SO_RCVBUF, (void *)&rcvbuf_size, &slen) == -1) err(1, "Unable to get default rcvbuf size"); slen = sizeof(sndbuf_size); if (getsockopt(s, SOL_SOCKET, SO_SNDBUF, (void *)&sndbuf_size, &slen) == -1) err(1, "Unable to get default sndbuf size"); (void)close(s); /* sanity check returned buffer sizes */ if (rcvbuf_size <= 0) rcvbuf_size = 8 * 1024; if (sndbuf_size <= 0) sndbuf_size = 8 * 1024; if (sndbuf_size > 8 * 1024 * 1024) sndbuf_size = 8 * 1024 * 1024; if (rcvbuf_size > 8 * 1024 * 1024) rcvbuf_size = 8 * 1024 * 1024; marg_sl = ftp_sl_init(); if ((tmpdir = getenv("TMPDIR")) == NULL) tmpdir = _PATH_TMP; /* Set default operation mode based on FTPMODE environment variable */ if ((cp = getenv("FTPMODE")) != NULL) { if (strcasecmp(cp, "passive") == 0) { passivemode = 1; activefallback = 0; } else if (strcasecmp(cp, "active") == 0) { passivemode = 0; activefallback = 0; } else if (strcasecmp(cp, "gate") == 0) { gatemode = 1; } else if (strcasecmp(cp, "auto") == 0) { passivemode = 1; activefallback = 1; } else warnx("Unknown $FTPMODE `%s'; using defaults", cp); } if (strcmp(getprogname(), "pftp") == 0) { passivemode = 1; activefallback = 0; } else if (strcmp(getprogname(), "gate-ftp") == 0) gatemode = 1; gateserver = getenv("FTPSERVER"); if (gateserver == NULL || *gateserver == '\0') gateserver = GATE_SERVER; if (gatemode) { if (*gateserver == '\0') { warnx( "Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp"); gatemode = 0; } } cp = getenv("TERM"); if (cp == NULL || strcmp(cp, "dumb") == 0) dumbterm = 1; else dumbterm = 0; fromatty = isatty(fileno(stdin)); ttyout = stdout; if (isatty(fileno(ttyout))) { verbose = 1; /* verbose if to a tty */ if (! dumbterm) { #ifndef NO_EDITCOMPLETE if (fromatty) /* editing mode on if tty is usable */ editing = 1; #endif #ifndef NO_PROGRESS if (foregroundproc()) progress = 1; /* progress bar on if fg */ #endif } } while ((ch = getopt(argc, argv, "46AadefginN:o:pP:q:r:Rs:tT:u:vV")) != -1) { switch (ch) { case '4': family = AF_INET; break; case '6': #ifdef INET6 family = AF_INET6; #else warnx("INET6 support is not available; ignoring -6"); #endif break; case 'A': activefallback = 0; passivemode = 0; break; case 'a': anonftp = 1; break; case 'd': options |= SO_DEBUG; ftp_debug++; break; case 'e': #ifndef NO_EDITCOMPLETE editing = 0; #endif break; case 'f': flushcache = 1; break; case 'g': doglob = 0; break; case 'i': interactive = 0; break; case 'n': autologin = 0; break; case 'N': if (strlcpy(netrc, optarg, sizeof(netrc)) >= sizeof(netrc)) errx(1, "%s: %s", optarg, strerror(ENAMETOOLONG)); break; case 'o': outfile = optarg; if (strcmp(outfile, "-") == 0) ttyout = stderr; break; case 'p': passivemode = 1; activefallback = 0; break; case 'P': ftpport = optarg; break; case 'q': quit_time = strtol(optarg, &ep, 10); if (quit_time < 1 || *ep != '\0') errx(1, "Bad quit value: %s", optarg); break; case 'r': retry_connect = strtol(optarg, &ep, 10); if (retry_connect < 1 || *ep != '\0') errx(1, "Bad retry value: %s", optarg); break; case 'R': restartautofetch = 1; break; case 's': src_addr = optarg; break; case 't': trace = 1; break; case 'T': { int targc; char *targv[6], *oac; /* look for `dir,max[,incr]' */ targc = 0; targv[targc++] = "-T"; oac = ftp_strdup(optarg); while ((cp = strsep(&oac, ",")) != NULL) { if (*cp == '\0') { warnx("Bad throttle value `%s'", optarg); usage(); /* NOTREACHED */ } targv[targc++] = cp; if (targc >= 5) break; } if (parserate(targc, targv, 1) == -1) usage(); free(oac); break; } case 'u': { isupload = 1; interactive = 0; upload_path = ftp_strdup(optarg); break; } case 'v': progress = verbose = 1; break; case 'V': progress = verbose = 0; break; default: usage(); } } /* set line buffering on ttyout */ setvbuf(ttyout, NULL, _IOLBF, 0); argc -= optind; argv += optind; cpend = 0; /* no pending replies */ proxy = 0; /* proxy not active */ crflag = 1; /* strip c.r. on ascii gets */ sendport = -1; /* not using ports */ if (src_addr != NULL) { struct addrinfo hints; int error; memset(&hints, 0, sizeof(hints)); hints.ai_family = family; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE; error = getaddrinfo(src_addr, NULL, &hints, &bindai); if (error) { errx(1, "Can't lookup `%s': %s", src_addr, (error == EAI_SYSTEM) ? strerror(errno) : gai_strerror(error)); } } /* * Cache the user name and home directory. */ localhome = NULL; localname = NULL; anonuser = "anonymous"; cp = getenv("HOME"); if (! EMPTYSTRING(cp)) localhome = ftp_strdup(cp); pw = NULL; cp = getlogin(); if (cp != NULL) pw = getpwnam(cp); if (pw == NULL) pw = getpwuid(getuid()); if (pw != NULL) { if (localhome == NULL && !EMPTYSTRING(pw->pw_dir)) localhome = ftp_strdup(pw->pw_dir); localname = ftp_strdup(pw->pw_name); anonuser = localname; } if (netrc[0] == '\0' && localhome != NULL) { if (strlcpy(netrc, localhome, sizeof(netrc)) >= sizeof(netrc) || strlcat(netrc, "/.netrc", sizeof(netrc)) >= sizeof(netrc)) { warnx("%s/.netrc: %s", localhome, strerror(ENAMETOOLONG)); netrc[0] = '\0'; } } if (localhome == NULL) localhome = ftp_strdup("/"); /* * 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(anonuser) + 2; anonpass = ftp_malloc(len); (void)strlcpy(anonpass, anonuser, len); (void)strlcat(anonpass, "@", len); /* * set all the defaults for options defined in * struct option optiontab[] declared in cmdtab.c */ setupoption("anonpass", getenv("FTPANONPASS"), anonpass); setupoption("ftp_proxy", getenv(FTP_PROXY), ""); setupoption("http_proxy", getenv(HTTP_PROXY), ""); setupoption("no_proxy", getenv(NO_PROXY), ""); setupoption("pager", getenv("PAGER"), DEFAULTPAGER); setupoption("prompt", getenv("FTPPROMPT"), DEFAULTPROMPT); setupoption("rprompt", getenv("FTPRPROMPT"), DEFAULTRPROMPT); free(anonpass); setttywidth(0); #ifdef SIGINFO (void)xsignal(SIGINFO, psummary); #endif (void)xsignal(SIGQUIT, psummary); (void)xsignal(SIGUSR1, crankrate); (void)xsignal(SIGUSR2, crankrate); (void)xsignal(SIGWINCH, setttywidth); if (argc > 0) { if (isupload) { rval = auto_put(argc, argv, upload_path); sigint_or_rval_exit: if (sigint_raised) { (void)xsignal(SIGINT, SIG_DFL); raise(SIGINT); } exit(rval); } else if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) { rval = auto_fetch(argc, argv); if (rval >= 0) /* -1 == connected and cd-ed */ goto sigint_or_rval_exit; } else { char *xargv[4], *user, *host; if ((rval = sigsetjmp(toplevel, 1))) goto sigint_or_rval_exit; (void)xsignal(SIGINT, intr); (void)xsignal(SIGPIPE, lostpeer); user = NULL; host = argv[0]; cp = strchr(host, '@'); if (cp) { *cp = '\0'; user = host; host = cp + 1; } /* XXX discards const */ xargv[0] = (char *)getprogname(); xargv[1] = host; xargv[2] = argv[1]; xargv[3] = NULL; do { int oautologin; oautologin = autologin; if (user != NULL) { anonftp = 0; autologin = 0; } setpeer(argc+1, xargv); autologin = oautologin; if (connected == 1 && user != NULL) (void)ftp_login(host, user, NULL); if (!retry_connect) break; if (!connected) { macnum = 0; fprintf(ttyout, "Retrying in %d seconds...\n", retry_connect); sleep(retry_connect); } } while (!connected); retry_connect = 0; /* connected, stop hiding msgs */ } } if (isupload) usage(); #ifndef NO_EDITCOMPLETE controlediting(); #endif /* !NO_EDITCOMPLETE */ (void)sigsetjmp(toplevel, 1); (void)xsignal(SIGINT, intr); (void)xsignal(SIGPIPE, lostpeer); for (;;) cmdscanner(); } /* * Generate a prompt */ char * prompt(void) { static char **prompt; static char buf[MAXPATHLEN]; if (prompt == NULL) { struct option *o; o = getoption("prompt"); if (o == NULL) errx(1, "prompt: no such option `prompt'"); prompt = &(o->value); } formatbuf(buf, sizeof(buf), *prompt ? *prompt : DEFAULTPROMPT); return (buf); } /* * Generate an rprompt */ char * rprompt(void) { static char **rprompt; static char buf[MAXPATHLEN]; if (rprompt == NULL) { struct option *o; o = getoption("rprompt"); if (o == NULL) errx(1, "rprompt: no such option `rprompt'"); rprompt = &(o->value); } formatbuf(buf, sizeof(buf), *rprompt ? *rprompt : DEFAULTRPROMPT); return (buf); } /* * Command parser. */ void cmdscanner(void) { struct cmd *c; char *p; #ifndef NO_EDITCOMPLETE int ch; size_t num; #endif int len; for (;;) { #ifndef NO_EDITCOMPLETE if (!editing) { #endif /* !NO_EDITCOMPLETE */ if (fromatty) { fputs(prompt(), ttyout); p = rprompt(); if (*p) fprintf(ttyout, "%s ", p); } (void)fflush(ttyout); len = getline(stdin, line, sizeof(line), NULL); switch (len) { case -1: /* EOF */ case -2: /* error */ if (fromatty) putc('\n', ttyout); quit(0, NULL); /* NOTREACHED */ case -3: /* too long; try again */ fputs("Sorry, input line is too long.\n", ttyout); continue; case 0: /* empty; try again */ continue; default: /* all ok */ break; } #ifndef NO_EDITCOMPLETE } else { const char *buf; HistEvent ev; cursor_pos = NULL; buf = el_gets(el, &ch); num = ch; if (buf == NULL || num == 0) { if (fromatty) putc('\n', ttyout); quit(0, NULL); } if (num >= sizeof(line)) { fputs("Sorry, input line is too long.\n", ttyout); break; } memcpy(line, buf, num); if (line[--num] == '\n') { line[num] = '\0'; if (num == 0) break; } history(hist, &ev, H_ENTER, buf); } #endif /* !NO_EDITCOMPLETE */ makeargv(); if (margc == 0) continue; c = getcmd(margv[0]); if (c == (struct cmd *)-1) { fputs("?Ambiguous command.\n", ttyout); continue; } if (c == NULL) { #if !defined(NO_EDITCOMPLETE) /* * attempt to el_parse() unknown commands. * any command containing a ':' would be parsed * as "[prog:]cmd ...", and will result in a * false positive if prog != "ftp", so treat * such commands as invalid. */ if (strchr(margv[0], ':') != NULL || !editing || el_parse(el, margc, (const char **)margv) != 0) #endif /* !NO_EDITCOMPLETE */ fputs("?Invalid command.\n", ttyout); continue; } if (c->c_conn && !connected) { fputs("Not connected.\n", ttyout); continue; } confirmrest = 0; margv[0] = c->c_name; (*c->c_handler)(margc, margv); if (bell && c->c_bell) (void)putc('\007', ttyout); if (c->c_handler != help) break; } (void)xsignal(SIGINT, intr); (void)xsignal(SIGPIPE, lostpeer); } struct cmd * getcmd(const char *name) { const char *p, *q; struct cmd *c, *found; int nmatches, longest; if (name == NULL) return (0); longest = 0; nmatches = 0; found = 0; for (c = cmdtab; (p = c->c_name) != NULL; c++) { for (q = name; *q == *p++; q++) if (*q == 0) /* exact match? */ return (c); if (!*q) { /* the name was a prefix */ if (q - name > longest) { longest = q - name; nmatches = 1; found = c; } else if (q - name == longest) nmatches++; } } if (nmatches > 1) return ((struct cmd *)-1); return (found); } /* * Slice a string up into argc/argv. */ int slrflag; void makeargv(void) { char *argp; stringbase = line; /* scan from first of buffer */ argbase = argbuf; /* store from first of buffer */ slrflag = 0; marg_sl->sl_cur = 0; /* reset to start of marg_sl */ for (margc = 0; ; margc++) { argp = slurpstring(); ftp_sl_add(marg_sl, argp); if (argp == NULL) break; } #ifndef NO_EDITCOMPLETE if (cursor_pos == line) { cursor_argc = 0; cursor_argo = 0; } else if (cursor_pos != NULL) { cursor_argc = margc; cursor_argo = strlen(margv[margc-1]); } #endif /* !NO_EDITCOMPLETE */ } #ifdef NO_EDITCOMPLETE #define INC_CHKCURSOR(x) (x)++ #else /* !NO_EDITCOMPLETE */ #define INC_CHKCURSOR(x) { (x)++ ; \ if (x == cursor_pos) { \ cursor_argc = margc; \ cursor_argo = ap-argbase; \ cursor_pos = NULL; \ } } #endif /* !NO_EDITCOMPLETE */ /* * Parse string into argbuf; * implemented with FSM to * handle quoting and strings */ char * slurpstring(void) { int got_one = 0; char *sb = stringbase; char *ap = argbase; char *tmp = argbase; /* will return this if token found */ if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ switch (slrflag) { /* and $ as token for macro invoke */ case 0: slrflag++; INC_CHKCURSOR(stringbase); return ((*sb == '!') ? "!" : "$"); /* NOTREACHED */ case 1: slrflag++; altarg = stringbase; break; default: break; } } S0: switch (*sb) { case '\0': goto OUT; case ' ': case '\t': INC_CHKCURSOR(sb); goto S0; default: switch (slrflag) { case 0: slrflag++; break; case 1: slrflag++; altarg = sb; break; default: break; } goto S1; } S1: switch (*sb) { case ' ': case '\t': case '\0': goto OUT; /* end of token */ case '\\': INC_CHKCURSOR(sb); goto S2; /* slurp next character */ case '"': INC_CHKCURSOR(sb); goto S3; /* slurp quoted string */ default: *ap = *sb; /* add character to token */ ap++; INC_CHKCURSOR(sb); got_one = 1; goto S1; } S2: switch (*sb) { case '\0': goto OUT; default: *ap = *sb; ap++; INC_CHKCURSOR(sb); got_one = 1; goto S1; } S3: switch (*sb) { case '\0': goto OUT; case '"': INC_CHKCURSOR(sb); goto S1; default: *ap = *sb; ap++; INC_CHKCURSOR(sb); got_one = 1; goto S3; } OUT: if (got_one) *ap++ = '\0'; argbase = ap; /* update storage pointer */ stringbase = sb; /* update scan pointer */ if (got_one) { return (tmp); } switch (slrflag) { case 0: slrflag++; break; case 1: slrflag++; altarg = NULL; break; default: break; } return (NULL); } /* * Help/usage command. * Call each command handler with argc == 0 and argv[0] == name. */ void help(int argc, char *argv[]) { struct cmd *c; char *nargv[1], *p, *cmd; int isusage; cmd = argv[0]; isusage = (strcmp(cmd, "usage") == 0); if (argc == 0 || (isusage && argc == 1)) { UPRINTF("usage: %s [command [...]]\n", cmd); return; } if (argc == 1) { StringList *buf; buf = ftp_sl_init(); fprintf(ttyout, "%sommands may be abbreviated. Commands are:\n\n", proxy ? "Proxy c" : "C"); for (c = cmdtab; (p = c->c_name) != NULL; c++) if (!proxy || c->c_proxy) ftp_sl_add(buf, p); list_vertical(buf); sl_free(buf, 0); return; } #define HELPINDENT ((int) sizeof("disconnect")) while (--argc > 0) { char *arg; arg = *++argv; c = getcmd(arg); if (c == (struct cmd *)-1) fprintf(ttyout, "?Ambiguous %s command `%s'\n", cmd, arg); else if (c == NULL) fprintf(ttyout, "?Invalid %s command `%s'\n", cmd, arg); else { if (isusage) { nargv[0] = c->c_name; (*c->c_handler)(0, nargv); } else fprintf(ttyout, "%-*s\t%s\n", HELPINDENT, c->c_name, c->c_help); } } } struct option * getoption(const char *name) { const char *p; struct option *c; if (name == NULL) return (NULL); for (c = optiontab; (p = c->name) != NULL; c++) { if (strcasecmp(p, name) == 0) return (c); } return (NULL); } char * getoptionvalue(const char *name) { struct option *c; if (name == NULL) errx(1, "getoptionvalue: invoked with NULL name"); c = getoption(name); if (c != NULL) return (c->value); errx(1, "getoptionvalue: invoked with unknown option `%s'", name); /* NOTREACHED */ } static void setupoption(char *name, char *value, char *defaultvalue) { char *nargv[3]; int overbose; nargv[0] = "setupoption()"; nargv[1] = name; nargv[2] = (value ? value : defaultvalue); overbose = verbose; verbose = 0; setoption(3, nargv); verbose = overbose; } void usage(void) { const char *progname = getprogname(); (void)fprintf(stderr, "usage: %s [-46AadefginpRtVv] [-N netrc] [-o outfile] [-P port] [-q quittime]\n" " [-r retry] [-s srcaddr] [-T dir,max[,inc]]\n" " [[user@]host [port]] [host:path[/]] [file:///file]\n" " [ftp://[user[:pass]@]host[:port]/path[/]]\n" " [http://[user[:pass]@]host[:port]/path] [...]\n" " %s -u URL file [...]\n", progname, progname); exit(1); }