File: [local] / src / usr.bin / ftp / main.c (download)
Revision 1.146, Sat Dec 23 23:03:00 2023 UTC (4 months, 3 weeks ago) by kn
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, HEAD
Changes since 1.145: +2 -2 lines
Relax -C pledge to unbreak shelling out in interactive mode
r1.69 introduced -C in 2008 "to continue multiple transfers";
'ftp -C ftp://ftp.eu.openbsd.org/' lands in "ftp> " and turns "mget"
into "reget" by default.
r1.139 -C/resume without "proc exec" thusly was too strict.
Instead, now after recent cleanups/tweaks, prevent execution with -o.
OK millert
|
/* $OpenBSD: main.c,v 1.146 2023/12/23 23:03:00 kn Exp $ */
/* $NetBSD: main.c,v 1.24 1997/08/18 10:20:26 lukem Exp $ */
/*
* 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.
*/
/*
* 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.
*/
/*
* FTP User Program -- Command Interface.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <tls.h>
#include "cmds.h"
#include "ftp_var.h"
int trace;
int hash;
int mark;
int sendport;
int verbose;
int connected;
int fromatty;
int interactive;
#ifndef SMALL
int confirmrest;
int debug;
int bell;
char *altarg;
#endif /* !SMALL */
int doglob;
int autologin;
int proxy;
int proxflag;
int gatemode;
char *gateserver;
int sunique;
int runique;
int mcase;
int ntflag;
int mapflag;
int preserve;
int progress;
int code;
int crflag;
char pasv[BUFSIZ];
int passivemode;
int activefallback;
char ntin[17];
char ntout[17];
char mapin[PATH_MAX];
char mapout[PATH_MAX];
char typename[32];
int type;
int curtype;
char structname[32];
int stru;
char formname[32];
int form;
char modename[32];
int mode;
char bytename[32];
int bytesize;
int anonftp;
int dirchange;
unsigned int retry_connect;
int ttywidth;
int epsv4;
int epsv4bad;
#ifndef SMALL
int editing;
EditLine *el;
History *hist;
char *cursor_pos;
size_t cursor_argc;
size_t cursor_argo;
int resume;
char *srcaddr;
int timestamp;
#endif /* !SMALL */
char *cookiefile;
off_t bytes;
off_t filesize;
char *direction;
char *hostname;
int unix_server;
int unix_proxy;
char *ftpport;
char *httpport;
#ifndef NOSSL
char *httpsport;
#endif /* !SMALL */
char *httpuseragent;
char *gateport;
jmp_buf toplevel;
#ifndef SMALL
char line[FTPBUFLEN];
char *argbase;
char *stringbase;
char argbuf[FTPBUFLEN];
StringList *marg_sl;
int margc;
int options;
#endif /* !SMALL */
int cpend;
int mflag;
#ifndef SMALL
int macnum;
struct macel macros[16];
char macbuf[4096];
#endif /* !SMALL */
FILE *ttyout;
int connect_timeout;
#ifndef SMALL
/* enable using server timestamps by default */
int server_timestamps = 1;
#endif
#ifndef NOSSL
char * const ssl_verify_opts[] = {
#define SSL_CAFILE 0
"cafile",
#define SSL_CAPATH 1
"capath",
#define SSL_CIPHERS 2
"ciphers",
#define SSL_DONTVERIFY 3
"dont",
#define SSL_DOVERIFY 4
"do",
#define SSL_VERIFYDEPTH 5
"depth",
#define SSL_MUSTSTAPLE 6
"muststaple",
#define SSL_NOVERIFYTIME 7
"noverifytime",
#define SSL_SESSION 8
"session",
#define SSL_PROTOCOLS 9
"protocols",
NULL
};
struct tls_config *tls_config;
int tls_session_fd = -1;
static void
process_ssl_options(char *cp)
{
const char *errstr;
char *str;
int depth;
uint32_t protocols;
while (*cp) {
switch (getsubopt(&cp, ssl_verify_opts, &str)) {
case SSL_CAFILE:
if (str == NULL)
errx(1, "missing CA file");
if (tls_config_set_ca_file(tls_config, str) != 0)
errx(1, "tls ca file failed: %s",
tls_config_error(tls_config));
break;
case SSL_CAPATH:
if (str == NULL)
errx(1, "missing CA directory path");
if (tls_config_set_ca_path(tls_config, str) != 0)
errx(1, "tls ca path failed: %s",
tls_config_error(tls_config));
break;
case SSL_CIPHERS:
if (str == NULL)
errx(1, "missing cipher list");
if (tls_config_set_ciphers(tls_config, str) != 0)
errx(1, "tls ciphers failed: %s",
tls_config_error(tls_config));
break;
case SSL_DONTVERIFY:
tls_config_insecure_noverifycert(tls_config);
tls_config_insecure_noverifyname(tls_config);
break;
case SSL_DOVERIFY:
tls_config_verify(tls_config);
break;
case SSL_VERIFYDEPTH:
if (str == NULL)
errx(1, "missing depth");
depth = strtonum(str, 0, INT_MAX, &errstr);
if (errstr)
errx(1, "certificate validation depth is %s",
errstr);
tls_config_set_verify_depth(tls_config, depth);
break;
case SSL_MUSTSTAPLE:
tls_config_ocsp_require_stapling(tls_config);
break;
case SSL_NOVERIFYTIME:
tls_config_insecure_noverifytime(tls_config);
break;
case SSL_SESSION:
if (str == NULL)
errx(1, "missing session file");
if ((tls_session_fd = open(str, O_RDWR|O_CREAT,
0600)) == -1)
err(1, "failed to open or create session file "
"'%s'", str);
if (tls_config_set_session_fd(tls_config,
tls_session_fd) == -1)
errx(1, "failed to set session: %s",
tls_config_error(tls_config));
break;
case SSL_PROTOCOLS:
if (str == NULL)
errx(1, "missing protocol name");
if (tls_config_parse_protocols(&protocols, str) != 0)
errx(1, "failed to parse TLS protocols");
if (tls_config_set_protocols(tls_config, protocols) != 0)
errx(1, "failed to set TLS protocols: %s",
tls_config_error(tls_config));
break;
default:
errx(1, "unknown -S suboption `%s'",
suboptarg ? suboptarg : "");
/* NOTREACHED */
}
}
}
#endif /* !NOSSL */
int family = PF_UNSPEC;
int pipeout;
int
main(volatile int argc, char *argv[])
{
int ch, rval;
#ifndef SMALL
int top;
#endif
struct passwd *pw = NULL;
char *cp, homedir[PATH_MAX];
char *outfile = NULL;
const char *errstr;
int dumb_terminal = 0;
ftpport = "ftp";
httpport = "http";
#ifndef NOSSL
httpsport = "https";
#endif /* !NOSSL */
gateport = getenv("FTPSERVERPORT");
if (gateport == NULL || *gateport == '\0')
gateport = "ftpgate";
doglob = 1;
interactive = 1;
autologin = 1;
passivemode = 1;
activefallback = 1;
preserve = 1;
verbose = 0;
progress = 0;
gatemode = 0;
#ifndef NOSSL
cookiefile = NULL;
#endif /* NOSSL */
#ifndef SMALL
editing = 0;
el = NULL;
hist = NULL;
resume = 0;
timestamp = 0;
srcaddr = NULL;
marg_sl = sl_init();
#endif /* !SMALL */
mark = HASHBYTES;
epsv4 = 1;
epsv4bad = 0;
/* Set default operation mode based on FTPMODE environment variable */
if ((cp = getenv("FTPMODE")) != NULL && *cp != '\0') {
if (strcmp(cp, "passive") == 0) {
passivemode = 1;
activefallback = 0;
} else if (strcmp(cp, "active") == 0) {
passivemode = 0;
activefallback = 0;
} else if (strcmp(cp, "gate") == 0) {
gatemode = 1;
} else if (strcmp(cp, "auto") == 0) {
passivemode = 1;
activefallback = 1;
} else
warnx("unknown FTPMODE: %s. Using defaults", cp);
}
if (strcmp(__progname, "gate-ftp") == 0)
gatemode = 1;
gateserver = getenv("FTPSERVER");
if (gateserver == NULL)
gateserver = "";
if (gatemode) {
if (*gateserver == '\0') {
warnx(
"Neither $FTPSERVER nor $GATE_SERVER is defined; disabling gate-ftp");
gatemode = 0;
}
}
cp = getenv("TERM");
dumb_terminal = (cp == NULL || *cp == '\0' || !strcmp(cp, "dumb") ||
!strcmp(cp, "emacs") || !strcmp(cp, "su"));
fromatty = isatty(fileno(stdin));
if (fromatty) {
verbose = 1; /* verbose if from a tty */
#ifndef SMALL
if (!dumb_terminal)
editing = 1; /* editing mode on if tty is usable */
#endif /* !SMALL */
}
ttyout = stdout;
if (isatty(fileno(ttyout)) && !dumb_terminal && foregroundproc())
progress = 1; /* progress bar on if tty is usable */
#ifndef NOSSL
cookiefile = getenv("http_cookies");
if (tls_config == NULL) {
tls_config = tls_config_new();
if (tls_config == NULL)
errx(1, "tls config failed");
if (tls_config_set_protocols(tls_config,
TLS_PROTOCOLS_ALL) != 0)
errx(1, "tls set protocols failed: %s",
tls_config_error(tls_config));
if (tls_config_set_ciphers(tls_config, "legacy") != 0)
errx(1, "tls set ciphers failed: %s",
tls_config_error(tls_config));
}
#endif /* !NOSSL */
httpuseragent = NULL;
while ((ch = getopt(argc, argv,
"46AaCc:dD:EeN:gik:Mmno:pP:r:S:s:TtU:uvVw:")) != -1) {
switch (ch) {
case '4':
family = PF_INET;
break;
case '6':
family = PF_INET6;
break;
case 'A':
activefallback = 0;
passivemode = 0;
break;
case 'N':
setprogname(optarg);
break;
case 'a':
anonftp = 1;
break;
case 'C':
#ifndef SMALL
resume = 1;
#endif /* !SMALL */
break;
case 'c':
#ifndef SMALL
cookiefile = optarg;
#endif /* !SMALL */
break;
case 'D':
action = optarg;
break;
case 'd':
#ifndef SMALL
options |= SO_DEBUG;
debug++;
#endif /* !SMALL */
break;
case 'E':
epsv4 = 0;
break;
case 'e':
#ifndef SMALL
editing = 0;
#endif /* !SMALL */
break;
case 'g':
doglob = 0;
break;
case 'i':
interactive = 0;
break;
case 'k':
keep_alive_timeout = strtonum(optarg, 0, INT_MAX,
&errstr);
if (errstr != NULL) {
warnx("keep alive amount is %s: %s", errstr,
optarg);
usage();
}
break;
case 'M':
progress = 0;
break;
case 'm':
progress = -1;
break;
case 'n':
autologin = 0;
break;
case 'o':
outfile = optarg;
pipeout = strcmp(outfile, "-") == 0;
ttyout = pipeout ? stderr : stdout;
break;
case 'p':
passivemode = 1;
activefallback = 0;
break;
case 'P':
ftpport = optarg;
break;
case 'r':
retry_connect = strtonum(optarg, 0, INT_MAX, &errstr);
if (errstr != NULL) {
warnx("retry amount is %s: %s", errstr,
optarg);
usage();
}
break;
case 'S':
#ifndef NOSSL
process_ssl_options(optarg);
#endif /* !NOSSL */
break;
case 's':
#ifndef SMALL
srcaddr = optarg;
#endif /* !SMALL */
break;
#ifndef SMALL
case 'T':
timestamp = 1;
break;
#endif /* !SMALL */
case 't':
trace = 1;
break;
#ifndef SMALL
case 'U':
free (httpuseragent);
if (strcspn(optarg, "\r\n") != strlen(optarg))
errx(1, "Invalid User-Agent: %s.", optarg);
if (asprintf(&httpuseragent, "User-Agent: %s",
optarg) == -1)
errx(1, "Can't allocate memory for HTTP(S) "
"User-Agent");
break;
case 'u':
server_timestamps = 0;
break;
#endif /* !SMALL */
case 'v':
verbose = 1;
break;
case 'V':
verbose = 0;
break;
case 'w':
connect_timeout = strtonum(optarg, 0, 200, &errstr);
if (errstr)
errx(1, "-w: %s", errstr);
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
#ifndef NOSSL
cookie_load();
#endif /* !NOSSL */
if (httpuseragent == NULL)
httpuseragent = HTTP_USER_AGENT;
cpend = 0; /* no pending replies */
proxy = 0; /* proxy not active */
crflag = 1; /* strip c.r. on ascii gets */
sendport = -1; /* not using ports */
/*
* Set up the home directory in case we're globbing.
*/
cp = getlogin();
if (cp != NULL) {
pw = getpwnam(cp);
}
if (pw == NULL)
pw = getpwuid(getuid());
if (pw != NULL) {
(void)strlcpy(homedir, pw->pw_dir, sizeof homedir);
home = homedir;
}
setttywidth(0);
(void)signal(SIGWINCH, setttywidth);
if (argc > 0) {
if (isurl(argv[0])) {
if (pipeout) {
if (pledge("stdio rpath dns tty inet",
NULL) == -1)
err(1, "pledge");
} else {
#ifndef SMALL
if (outfile == NULL) {
if (pledge("stdio rpath wpath cpath dns tty inet proc exec fattr",
NULL) == -1)
err(1, "pledge");
} else
#endif /* !SMALL */
if (pledge("stdio rpath wpath cpath dns tty inet fattr",
NULL) == -1)
err(1, "pledge");
}
rval = auto_fetch(argc, argv, outfile);
/* -1 == connected and cd-ed */
if (rval >= 0 || outfile != NULL)
exit(rval);
} else {
#ifndef SMALL
char *xargv[5];
if (setjmp(toplevel))
exit(0);
(void)signal(SIGINT, (sig_t)intr);
(void)signal(SIGPIPE, (sig_t)lostpeer);
xargv[0] = __progname;
xargv[1] = argv[0];
xargv[2] = argv[1];
xargv[3] = argv[2];
xargv[4] = NULL;
do {
setpeer(argc+1, xargv);
if (!retry_connect)
break;
if (!connected) {
macnum = 0;
fputs("Retrying...\n", ttyout);
sleep(retry_connect);
}
} while (!connected);
retry_connect = 0; /* connected, stop hiding msgs */
#endif /* !SMALL */
}
}
#ifndef SMALL
controlediting();
top = setjmp(toplevel) == 0;
if (top) {
(void)signal(SIGINT, (sig_t)intr);
(void)signal(SIGPIPE, (sig_t)lostpeer);
}
for (;;) {
cmdscanner(top);
top = 1;
}
#else /* !SMALL */
usage();
#endif /* !SMALL */
}
void
intr(void)
{
int save_errno = errno;
write(fileno(ttyout), "\n\r", 2);
alarmtimer(0);
errno = save_errno;
longjmp(toplevel, 1);
}
void
lostpeer(void)
{
int save_errno = errno;
alarmtimer(0);
if (connected) {
if (cout != NULL) {
(void)shutdown(fileno(cout), SHUT_RDWR);
(void)fclose(cout);
cout = NULL;
}
if (data >= 0) {
(void)shutdown(data, SHUT_RDWR);
(void)close(data);
data = -1;
}
connected = 0;
}
pswitch(1);
if (connected) {
if (cout != NULL) {
(void)shutdown(fileno(cout), SHUT_RDWR);
(void)fclose(cout);
cout = NULL;
}
connected = 0;
}
proxflag = 0;
pswitch(0);
errno = save_errno;
}
#ifndef SMALL
/*
* Generate a prompt
*/
char *
prompt(void)
{
return ("ftp> ");
}
/*
* Command parser.
*/
void
cmdscanner(int top)
{
struct cmd *c;
int num;
HistEvent hev;
if (!top && !editing)
(void)putc('\n', ttyout);
for (;;) {
if (!editing) {
if (fromatty) {
fputs(prompt(), ttyout);
(void)fflush(ttyout);
}
if (fgets(line, sizeof(line), stdin) == NULL)
quit(0, 0);
num = strlen(line);
if (num == 0)
break;
if (line[--num] == '\n') {
if (num == 0)
break;
line[num] = '\0';
} else if (num == sizeof(line) - 2) {
fputs("sorry, input line too long.\n", ttyout);
while ((num = getchar()) != '\n' && num != EOF)
/* void */;
break;
} /* else it was a line without a newline */
} else {
const char *buf;
cursor_pos = NULL;
if ((buf = el_gets(el, &num)) == NULL || num == 0) {
putc('\n', ttyout);
fflush(ttyout);
quit(0, 0);
}
if (buf[--num] == '\n') {
if (num == 0)
break;
}
if (num >= sizeof(line)) {
fputs("sorry, input line too long.\n", ttyout);
break;
}
memcpy(line, buf, (size_t)num);
line[num] = '\0';
history(hist, &hev, H_ENTER, buf);
}
makeargv();
if (margc == 0)
continue;
c = getcmd(margv[0]);
if (c == (struct cmd *)-1) {
fputs("?Ambiguous command.\n", ttyout);
continue;
}
if (c == 0) {
/*
* Give editline(3) a shot at unknown commands.
* XXX - bogus commands with a colon in
* them will not elicit an error.
*/
if (editing &&
el_parse(el, margc, (const char **)margv) != 0)
fputs("?Invalid command.\n", ttyout);
continue;
}
if (c->c_conn && !connected) {
fputs("Not connected.\n", ttyout);
continue;
}
confirmrest = 0;
(*c->c_handler)(margc, margv);
if (bell && c->c_bell)
(void)putc('\007', ttyout);
if (c->c_handler != help)
break;
}
(void)signal(SIGINT, (sig_t)intr);
(void)signal(SIGPIPE, (sig_t)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();
sl_add(marg_sl, argp);
if (argp == NULL)
break;
}
if (cursor_pos == line) {
cursor_argc = 0;
cursor_argo = 0;
} else if (cursor_pos != NULL) {
cursor_argc = margc;
cursor_argo = strlen(margv[margc-1]);
}
}
#define INC_CHKCURSOR(x) { (x)++ ; \
if (x == cursor_pos) { \
cursor_argc = margc; \
cursor_argo = ap-argbase; \
cursor_pos = NULL; \
} }
/*
* 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 = (char *) 0;
break;
default:
break;
}
return (NULL);
}
/*
* Help command.
* Call each command handler with argc == 0 and argv[0] == name.
*/
void
help(int argc, char *argv[])
{
struct cmd *c;
if (argc == 1) {
StringList *buf;
buf = sl_init();
fprintf(ttyout, "%sommands may be abbreviated. Commands are:\n\n",
proxy ? "Proxy c" : "C");
for (c = cmdtab; c < &cmdtab[NCMDS]; c++)
if (c->c_name && (!proxy || c->c_proxy))
sl_add(buf, c->c_name);
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 help command %s\n", arg);
else if (c == NULL)
fprintf(ttyout, "?Invalid help command %s\n", arg);
else
fprintf(ttyout, "%-*s\t%s\n", HELPINDENT,
c->c_name, c->c_help);
}
}
#endif /* !SMALL */
__dead void
usage(void)
{
fprintf(stderr, "usage: "
#ifndef SMALL
"ftp [-46AadEegiMmnptVv] [-D title] [-k seconds] [-P port] "
"[-r seconds]\n"
" [-s sourceaddr] [host [port]]\n"
" ftp [-C] [-N name] [-o output] [-s sourceaddr]\n"
" ftp://[user:password@]host[:port]/file[/] ...\n"
" ftp [-CTu] [-c cookie] [-N name] [-o output] [-S ssl_options] "
"[-s sourceaddr]\n"
" [-U useragent] [-w seconds] "
"http[s]://[user:password@]host[:port]/file ...\n"
" ftp [-C] [-N name] [-o output] [-s sourceaddr] file:file ...\n"
" ftp [-C] [-N name] [-o output] [-s sourceaddr] host:/file[/] ...\n"
#else /* !SMALL */
"ftp [-N name] [-o output] "
"ftp://[user:password@]host[:port]/file[/] ...\n"
#ifndef NOSSL
" ftp [-N name] [-o output] [-S ssl_options] [-w seconds] "
"http[s]://[user:password@]host[:port]/file ...\n"
#else
" ftp [-N name] [-o output] [-w seconds] http://host[:port]/file ...\n"
#endif /* NOSSL */
" ftp [-N name] [-o output] file:file ...\n"
" ftp [-N name] [-o output] host:/file[/] ...\n"
#endif /* !SMALL */
);
exit(1);
}
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