1 /* $NetBSD: util.c,v 1.158 2013/02/19 23:29:15 dsl Exp $ */
4 * Copyright (c) 1997-2009 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * This code is derived from software contributed to The NetBSD Foundation
11 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
12 * NASA Ames Research Center.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
37 * Copyright (c) 1985, 1989, 1993, 1994
38 * The Regents of the University of California. All rights reserved.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
43 * 1. Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * 2. Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in the
47 * documentation and/or other materials provided with the distribution.
48 * 3. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 #include <sys/cdefs.h>
67 __RCSID("$NetBSD: util.c,v 1.158 2013/02/19 23:29:15 dsl Exp $");
71 * FTP User Program -- Misc support routines
73 #include <sys/param.h>
74 #include <sys/socket.h>
75 #include <sys/ioctl.h>
77 #include <netinet/in.h>
101 * Connect to peer server and auto-login, if possible.
104 setpeer(int argc
, char *argv
[])
112 fprintf(ttyout
, "Already connected to %s, use close first.\n",
118 (void)another(&argc
, &argv
, "to");
119 if (argc
< 2 || argc
> 3) {
121 UPRINTF("usage: %s host-name [port]\n", argv
[0]);
133 if (gateserver
== NULL
|| *gateserver
== '\0')
134 errx(1, "main: gateserver not defined");
135 host
= hookup(gateserver
, port
);
137 host
= hookup(argv
[1], port
);
140 if (gatemode
&& verbose
) {
142 "Connecting via pass-through server %s\n",
148 * Set up defaults for FTP.
150 (void)strlcpy(typename
, "ascii", sizeof(typename
));
153 (void)strlcpy(formname
, "non-print", sizeof(formname
));
155 (void)strlcpy(modename
, "stream", sizeof(modename
));
157 (void)strlcpy(structname
, "file", sizeof(structname
));
159 (void)strlcpy(bytename
, "8", sizeof(bytename
));
162 (void)ftp_login(argv
[1], NULL
, NULL
);
167 parse_feat(const char *fline
)
171 * work-around broken ProFTPd servers that can't
172 * even obey RFC 2389.
174 while (*fline
&& isspace((int)*fline
))
177 if (strcasecmp(fline
, "MDTM") == 0)
178 features
[FEAT_MDTM
] = 1;
179 else if (strncasecmp(fline
, "MLST", sizeof("MLST") - 1) == 0) {
180 features
[FEAT_MLST
] = 1;
181 } else if (strcasecmp(fline
, "REST STREAM") == 0)
182 features
[FEAT_REST_STREAM
] = 1;
183 else if (strcasecmp(fline
, "SIZE") == 0)
184 features
[FEAT_SIZE
] = 1;
185 else if (strcasecmp(fline
, "TVFS") == 0)
186 features
[FEAT_TVFS
] = 1;
190 * Determine the remote system type (SYST) and features (FEAT).
191 * Call after a successful login (i.e, connected = -1)
202 /* determine remote system type */
203 if (command("SYST") == COMPLETE
) {
205 int os_len
= strcspn(reply_string
+ 4, " \r\n\t");
206 if (os_len
> 1 && reply_string
[4 + os_len
- 1] == '.')
208 fprintf(ttyout
, "Remote system type is %.*s.\n",
209 os_len
, reply_string
+ 4);
212 * Decide whether we should default to bninary.
213 * Traditionally checked for "215 UNIX Type: L8", but
214 * some printers report "Linux" ! so be more forgiving.
215 * In reality we probably almost never want text any more.
217 if (!strncasecmp(reply_string
+ 4, "unix", 4) ||
218 !strncasecmp(reply_string
+ 4, "linux", 5)) {
224 * Set type to 0 (not specified by user),
225 * meaning binary by default, but don't bother
226 * telling server. We can use binary
227 * for text files unless changed by the user.
230 (void)strlcpy(typename
, "binary", sizeof(typename
));
233 "Using %s mode to transfer files.\n",
241 !strncmp(reply_string
, "215 TOPS20", 10))
243 "Remember to set tenex mode when transferring binary files from this machine.\n",
248 /* determine features (if any) */
249 for (i
= 0; i
< FEAT_max
; i
++)
251 reply_callback
= parse_feat
;
252 if (command("FEAT") == COMPLETE
) {
253 for (i
= 0; i
< FEAT_max
; i
++) {
254 if (features
[i
] == -1)
257 features
[FEAT_FEAT
] = 1;
259 features
[FEAT_FEAT
] = 0;
262 #define DEBUG_FEAT(x) fprintf(ttyout, "features[" #x "] = %d\n", features[(x)])
263 DEBUG_FEAT(FEAT_FEAT
);
264 DEBUG_FEAT(FEAT_MDTM
);
265 DEBUG_FEAT(FEAT_MLST
);
266 DEBUG_FEAT(FEAT_REST_STREAM
);
267 DEBUG_FEAT(FEAT_SIZE
);
268 DEBUG_FEAT(FEAT_TVFS
);
272 reply_callback
= NULL
;
278 * Reset the various variables that indicate connection state back to
279 * disconnected settings.
280 * The caller is responsible for issuing any commands to the remote server
281 * to perform a clean shutdown before this is invoked.
294 * determine if anonftp was specifically set with -a
295 * (1), or implicitly set by auto_fetch() (2). in the
296 * latter case, disable after the current xfer
311 * Top-level signal handler for interrupted commands.
320 write(fileno(ttyout
), "\n", 1);
321 siglongjmp(toplevel
, 1);
325 * Signal handler for lost connections; cleanup various elements of
326 * the connection state, and call cleanuppeer() to finish it off.
336 (void)shutdown(fileno(cout
), 1+1);
341 (void)shutdown(data
, 1+1);
350 (void)shutdown(fileno(cout
), 1+1);
364 * Login to remote host, using given username & password if supplied.
365 * Return non-zero if successful.
368 ftp_login(const char *host
, const char *luser
, const char *lpass
)
371 char *fuser
, *pass
, *facct
, *p
;
372 char emptypass
[] = "";
373 const char *errormsg
;
374 int n
, aflag
, rval
, nlen
;
377 fuser
= pass
= facct
= NULL
;
379 fuser
= ftp_strdup(luser
);
381 pass
= ftp_strdup(lpass
);
383 DPRINTF("ftp_login: user `%s' pass `%s' host `%s'\n",
384 STRorNULL(fuser
), STRorNULL(pass
), STRorNULL(host
));
387 * Set up arguments for an anonymous FTP session, if necessary.
391 fuser
= ftp_strdup("anonymous"); /* as per RFC 1635 */
393 pass
= ftp_strdup(getoptionvalue("anonpass"));
396 if (ruserpass(host
, &fuser
, &pass
, &facct
) < 0) {
398 goto cleanup_ftp_login
;
401 while (fuser
== NULL
) {
403 fprintf(ttyout
, "Name (%s:%s): ", host
, localname
);
405 fprintf(ttyout
, "Name (%s): ", host
);
407 nlen
= get_line(stdin
, tmp
, sizeof(tmp
), &errormsg
);
409 fprintf(ttyout
, "%s; %s aborted.\n", errormsg
, "login");
411 goto cleanup_ftp_login
;
412 } else if (nlen
== 0) {
413 fuser
= ftp_strdup(localname
);
415 fuser
= ftp_strdup(tmp
);
423 len
= strlen(fuser
) + 1 + strlen(host
) + 1;
424 nuser
= ftp_malloc(len
);
425 (void)strlcpy(nuser
, fuser
, len
);
426 (void)strlcat(nuser
, "@", len
);
427 (void)strlcat(nuser
, host
, len
);
432 n
= command("USER %s", fuser
);
435 p
= getpass("Password: ");
438 pass
= ftp_strdup(p
);
439 memset(p
, 0, strlen(p
));
441 n
= command("PASS %s", pass
);
442 memset(pass
, 0, strlen(pass
));
447 p
= getpass("Account: ");
450 facct
= ftp_strdup(p
);
451 memset(p
, 0, strlen(p
));
453 if (facct
[0] == '\0') {
454 warnx("Login failed");
455 goto cleanup_ftp_login
;
457 n
= command("ACCT %s", facct
);
458 memset(facct
, 0, strlen(facct
));
460 if ((n
!= COMPLETE
) ||
461 (!aflag
&& facct
!= NULL
&& command("ACCT %s", facct
) != COMPLETE
)) {
462 warnx("Login failed");
463 goto cleanup_ftp_login
;
466 username
= ftp_strdup(fuser
);
468 goto cleanup_ftp_login
;
472 for (n
= 0; n
< macnum
; ++n
) {
473 if (!strcmp("init", macros
[n
].mac_name
)) {
474 (void)strlcpy(line
, "$init", sizeof(line
));
476 domacro(margc
, margv
);
486 memset(pass
, 0, strlen(pass
));
489 memset(facct
, 0, strlen(facct
));
495 * `another' gets another argument, and stores the new argc and argv.
496 * It reverts to the top level (via intr()) on EOF/error.
498 * Returns false if no new arguments have been added.
501 another(int *pargc
, char ***pargv
, const char *aprompt
)
503 const char *errormsg
;
508 if (len
>= sizeof(line
) - 3) {
509 fputs("Sorry, arguments too long.\n", ttyout
);
512 fprintf(ttyout
, "(%s) ", aprompt
);
515 nlen
= get_line(stdin
, line
+ len
, sizeof(line
)-len
, &errormsg
);
517 fprintf(ttyout
, "%s; %s aborted.\n", errormsg
, "operation");
522 ret
= margc
> *pargc
;
529 * glob files given in argv[] from the remote server.
530 * if errbuf isn't NULL, store error messages there instead
531 * of writing to the screen.
534 remglob(char *argv
[], int doswitch
, const char **errbuf
)
536 static char buf
[MAXPATHLEN
];
537 static FILE *ftemp
= NULL
;
539 char temp
[MAXPATHLEN
];
540 int oldverbose
, oldhash
, oldprogress
, fd
;
545 if (!mflag
|| !connected
) {
559 if ((cp
= *++args
) == NULL
)
564 len
= strlcpy(temp
, tmpdir
, sizeof(temp
));
565 if (temp
[len
- 1] != '/')
566 (void)strlcat(temp
, "/", sizeof(temp
));
567 (void)strlcat(temp
, TMPFILE
, sizeof(temp
));
568 if ((fd
= mkstemp(temp
)) < 0) {
569 warn("Unable to create temporary file `%s'", temp
);
573 oldverbose
= verbose
;
574 verbose
= (errbuf
!= NULL
) ? -1 : 0;
576 oldprogress
= progress
;
581 for (rmode
= "w"; *++argv
!= NULL
; rmode
= "a")
582 recvrequest("NLST", temp
, *argv
, rmode
, 0, 0);
583 if ((code
/ 100) != COMPLETE
) {
585 *errbuf
= reply_string
;
589 verbose
= oldverbose
;
591 progress
= oldprogress
;
592 ftemp
= fopen(temp
, "r");
596 warnx("Can't find list of remote files");
599 "Can't find list of remote files";
603 if (fgets(buf
, sizeof(buf
), ftemp
) == NULL
) {
608 if ((cp
= strchr(buf
, '\n')) != NULL
)
614 * Glob a local file name specification with the expectation of a single
615 * return value. Can't control multiple values being expanded from the
616 * expression, we return only the first.
617 * Returns NULL on error, or a pointer to a buffer containing the filename
618 * that's the caller's responsiblity to free(3) when finished with.
621 globulize(const char *pattern
)
628 return (ftp_strdup(pattern
));
630 flags
= GLOB_BRACE
|GLOB_NOCHECK
|GLOB_TILDE
;
631 memset(&gl
, 0, sizeof(gl
));
632 if (glob(pattern
, flags
, NULL
, &gl
) || gl
.gl_pathc
== 0) {
633 warnx("Glob pattern `%s' not found", pattern
);
637 p
= ftp_strdup(gl
.gl_pathv
[0]);
643 * determine size of remote file
646 remotesize(const char *file
, int noisy
)
655 if (! features
[FEAT_SIZE
]) {
658 "SIZE is not supported by remote server.\n");
659 goto cleanup_remotesize
;
661 r
= command("SIZE %s", file
);
665 cp
= strchr(reply_string
, ' ');
668 size
= STRTOLL(cp
, &ep
, 10);
669 if (*ep
!= '\0' && !isspace((unsigned char)*ep
))
673 if (r
== ERROR
&& code
== 500 && features
[FEAT_SIZE
] == -1)
674 features
[FEAT_SIZE
] = 0;
675 if (noisy
&& ftp_debug
== 0) {
676 fputs(reply_string
, ttyout
);
686 * determine last modification time (in GMT) of remote file
689 remotemodtime(const char *file
, int noisy
)
691 int overbose
, ocode
, r
;
699 if (! features
[FEAT_MDTM
]) {
702 "MDTM is not supported by remote server.\n");
703 goto cleanup_parse_time
;
705 r
= command("MDTM %s", file
);
708 char *timestr
, *frac
;
711 * time-val = 14DIGIT [ "." 1*DIGIT ]
712 * YYYYMMDDHHMMSS[.sss]
713 * mdtm-response = "213" SP time-val CRLF / error-response
715 timestr
= reply_string
+ 4;
719 * XXX: ignored for now
721 frac
= strchr(timestr
, '\r');
724 frac
= strchr(timestr
, '.');
727 if (strlen(timestr
) == 15 && strncmp(timestr
, "191", 3) == 0) {
729 * XXX: Workaround for lame ftpd's that return
730 * `19100' instead of `2000'
733 "Y2K warning! Incorrect time-val `%s' received from server.\n",
738 fprintf(ttyout
, "Converted to `%s'\n", timestr
);
740 memset(&timebuf
, 0, sizeof(timebuf
));
741 if (strlen(timestr
) != 14 ||
742 (strptime(timestr
, "%Y%m%d%H%M%S", &timebuf
) == NULL
)) {
744 fprintf(ttyout
, "Can't parse time `%s'.\n", timestr
);
745 goto cleanup_parse_time
;
747 timebuf
.tm_isdst
= -1;
748 rtime
= timegm(&timebuf
);
750 if (noisy
|| ftp_debug
!= 0)
753 goto cleanup_parse_time
;
755 DPRINTF("remotemodtime: parsed time `%s' as " LLF
758 rfc2822time(localtime(&rtime
)));
761 if (r
== ERROR
&& code
== 500 && features
[FEAT_MDTM
] == -1)
762 features
[FEAT_MDTM
] = 0;
763 if (noisy
&& ftp_debug
== 0) {
764 fputs(reply_string
, ttyout
);
776 * Format tm in an RFC 2822 compatible manner, with a trailing \n.
777 * Returns a pointer to a static string containing the result.
780 rfc2822time(const struct tm
*tm
)
782 static char result
[50];
784 if (strftime(result
, sizeof(result
),
785 "%a, %d %b %Y %H:%M:%S %z\n", tm
) == 0)
786 errx(1, "Can't convert RFC 2822 time: buffer too small");
791 * Parse HTTP-date as per RFC 2616.
792 * Return a pointer to the next character of the consumed date string,
796 parse_rfc2616time(struct tm
*parsed
, const char *httpdate
)
799 const char *curlocale
;
801 /* The representation of %a depends on the current locale. */
802 curlocale
= setlocale(LC_TIME
, NULL
);
803 (void)setlocale(LC_TIME
, "C");
805 if ((t
= strptime(httpdate
, "%a, %d %b %Y %H:%M:%S GMT", parsed
)) ||
807 (t
= strptime(httpdate
, "%a, %d-%b-%y %H:%M:%S GMT", parsed
)) ||
809 (t
= strptime(httpdate
, "%a, %b %d %H:%M:%S %Y", parsed
))) {
812 (void)setlocale(LC_TIME
, curlocale
);
817 * Update global `localcwd', which contains the state of the local cwd
823 if (getcwd(localcwd
, sizeof(localcwd
)) == NULL
)
825 DPRINTF("updatelocalcwd: got `%s'\n", localcwd
);
829 * Update global `remotecwd', which contains the state of the remote cwd
832 updateremotecwd(void)
842 if (command("PWD") != COMPLETE
)
844 cp
= strchr(reply_string
, ' ');
845 if (cp
== NULL
|| cp
[0] == '\0' || cp
[1] != '"')
848 for (i
= 0; *cp
&& i
< sizeof(remotecwd
) - 1; i
++, cp
++) {
858 DPRINTF("updateremotecwd: got `%s'\n", remotecwd
);
859 goto cleanupremotecwd
;
868 * Ensure file is in or under dir.
869 * Returns 1 if so, 0 if not (or an error occurred).
872 fileindir(const char *file
, const char *dir
)
874 char parentdirbuf
[PATH_MAX
+1], *parentdir
;
875 char realdir
[PATH_MAX
+1];
878 /* determine parent directory of file */
879 (void)strlcpy(parentdirbuf
, file
, sizeof(parentdirbuf
));
880 parentdir
= dirname(parentdirbuf
);
881 if (strcmp(parentdir
, ".") == 0)
882 return 1; /* current directory is ok */
884 /* find the directory */
885 if (realpath(parentdir
, realdir
) == NULL
) {
886 warn("Unable to determine real path of `%s'", parentdir
);
889 if (realdir
[0] != '/') /* relative result is ok */
891 dirlen
= strlen(dir
);
892 if (strncmp(realdir
, dir
, dirlen
) == 0 &&
893 (realdir
[dirlen
] == '/' || realdir
[dirlen
] == '\0'))
899 * List words in stringlist, vertically arranged
902 list_vertical(StringList
*sl
)
905 size_t columns
, lines
;
911 for (i
= 0 ; i
< sl
->sl_cur
; i
++) {
912 w
= strlen(sl
->sl_str
[i
]);
916 width
= (width
+ 8) &~ 7;
918 columns
= ttywidth
/ width
;
921 lines
= (sl
->sl_cur
+ columns
- 1) / columns
;
922 for (i
= 0; i
< lines
; i
++) {
923 for (j
= 0; j
< columns
; j
++) {
924 p
= sl
->sl_str
[j
* lines
+ i
];
927 if (j
* lines
+ i
+ lines
>= sl
->sl_cur
) {
935 (void)putc('\t', ttyout
);
943 * Update the global ttywidth value, using TIOCGWINSZ.
948 struct winsize winsize
;
951 if (ioctl(fileno(ttyout
), TIOCGWINSZ
, &winsize
) != -1 &&
953 ttywidth
= winsize
.ws_col
;
960 * Change the rate limit up (SIGUSR1) or down (SIGUSR2)
969 rate_get
+= rate_get_incr
;
971 rate_put
+= rate_put_incr
;
974 if (rate_get
&& rate_get
> rate_get_incr
)
975 rate_get
-= rate_get_incr
;
976 if (rate_put
&& rate_put
> rate_put_incr
)
977 rate_put
-= rate_put_incr
;
980 err(1, "crankrate invoked with unknown signal: %d", sig
);
986 * Setup or cleanup EditLine structures
988 #ifndef NO_EDITCOMPLETE
992 if (editing
&& el
== NULL
&& hist
== NULL
) {
996 el
= el_init(getprogname(), stdin
, ttyout
, stderr
);
998 hist
= history_init(); /* init the builtin history */
999 history(hist
, &ev
, H_SETSIZE
, 100);/* remember 100 events */
1000 el_set(el
, EL_HIST
, history
, hist
); /* use history */
1002 el_set(el
, EL_EDITOR
, "emacs"); /* default editor is emacs */
1003 el_set(el
, EL_PROMPT
, prompt
); /* set the prompt functions */
1004 el_set(el
, EL_RPROMPT
, rprompt
);
1006 /* add local file completion, bind to TAB */
1007 el_set(el
, EL_ADDFN
, "ftp-complete",
1008 "Context sensitive argument completion",
1010 el_set(el
, EL_BIND
, "^I", "ftp-complete", NULL
);
1011 el_source(el
, NULL
); /* read ~/.editrc */
1012 if ((el_get(el
, EL_EDITMODE
, &editmode
) != -1) && editmode
== 0)
1013 editing
= 0; /* the user doesn't want editing,
1014 * so disable, and let statement
1017 el_set(el
, EL_SIGNAL
, 1);
1030 #endif /* !NO_EDITCOMPLETE */
1033 * Convert the string `arg' to an int, which may have an optional SI suffix
1034 * (`b', `k', `m', `g'). Returns the number for success, -1 otherwise.
1037 strsuftoi(const char *arg
)
1042 if (!isdigit((unsigned char)arg
[0]))
1045 val
= strtol(arg
, &cp
, 10);
1047 if (cp
[0] != '\0' && cp
[1] != '\0')
1049 switch (tolower((unsigned char)cp
[0])) {
1066 if (val
< 0 || val
> INT_MAX
)
1073 * Set up socket buffer sizes before a connection is made.
1076 setupsockbufsize(int sock
)
1080 if (0 == rcvbuf_size
) {
1081 slen
= sizeof(rcvbuf_size
);
1082 if (getsockopt(sock
, SOL_SOCKET
, SO_RCVBUF
,
1083 (void *)&rcvbuf_size
, &slen
) == -1)
1084 err(1, "Unable to determine rcvbuf size");
1085 if (rcvbuf_size
<= 0)
1086 rcvbuf_size
= 8 * 1024;
1087 if (rcvbuf_size
> 8 * 1024 * 1024)
1088 rcvbuf_size
= 8 * 1024 * 1024;
1089 DPRINTF("setupsockbufsize: rcvbuf_size determined as %d\n",
1092 if (0 == sndbuf_size
) {
1093 slen
= sizeof(sndbuf_size
);
1094 if (getsockopt(sock
, SOL_SOCKET
, SO_SNDBUF
,
1095 (void *)&sndbuf_size
, &slen
) == -1)
1096 err(1, "Unable to determine sndbuf size");
1097 if (sndbuf_size
<= 0)
1098 sndbuf_size
= 8 * 1024;
1099 if (sndbuf_size
> 8 * 1024 * 1024)
1100 sndbuf_size
= 8 * 1024 * 1024;
1101 DPRINTF("setupsockbufsize: sndbuf_size determined as %d\n",
1105 if (setsockopt(sock
, SOL_SOCKET
, SO_SNDBUF
,
1106 (void *)&sndbuf_size
, sizeof(sndbuf_size
)) == -1)
1107 warn("Unable to set sndbuf size %d", sndbuf_size
);
1109 if (setsockopt(sock
, SOL_SOCKET
, SO_RCVBUF
,
1110 (void *)&rcvbuf_size
, sizeof(rcvbuf_size
)) == -1)
1111 warn("Unable to set rcvbuf size %d", rcvbuf_size
);
1115 * Copy characters from src into dst, \ quoting characters that require it
1118 ftpvis(char *dst
, size_t dstlen
, const char *src
, size_t srclen
)
1123 while (src
[si
] != '\0' && di
< dstlen
&& si
< srclen
) {
1132 * Need room for two characters and NUL, avoiding
1133 * incomplete escape sequences at end of dst.
1135 if (di
>= dstlen
- 3)
1140 dst
[di
] = src
[si
++];
1149 * Copy src into buf (which is len bytes long), expanding % sequences.
1152 formatbuf(char *buf
, size_t len
, const char *src
)
1154 const char *p
, *p2
, *q
;
1156 int op
, updirs
, pdirs
;
1158 #define ADDBUF(x) do { \
1165 for (i
= 0; *p
; p
++) {
1177 p2
= connected
? remotecwd
: "";
1180 /* option to determine fixed # of dirs from path */
1181 if (op
== '.' || op
== 'c') {
1185 while (*p2
) /* calc # of /'s */
1188 if (p
[1] == '0') { /* print <x> or ... */
1192 if (p
[1] >= '1' && p
[1] <= '9') {
1193 /* calc # to skip */
1200 while (skip
-- > 0) {
1201 while ((p2
> q
) && (*p2
!= '/'))
1206 if (*p2
== '/' && p2
!= q
)
1210 if (updirs
> 0 && pdirs
) {
1224 ADDBUF('0' + updirs
);
1234 for (p2
= connected
&& hostname
? hostname
: "-";
1236 if (op
== 'm' && *p2
== '.')
1243 for (p2
= connected
? username
: "-"; *p2
; p2
++)
1251 default: /* display unknown codes literally */
1263 * Determine if given string is an IPv6 address or not.
1264 * Return 1 for yes, 0 for no
1267 isipv6addr(const char *addr
)
1271 struct addrinfo hints
, *res
;
1273 memset(&hints
, 0, sizeof(hints
));
1274 hints
.ai_family
= AF_INET6
;
1275 hints
.ai_socktype
= SOCK_DGRAM
; /*dummy*/
1276 hints
.ai_flags
= AI_NUMERICHOST
;
1277 if (getaddrinfo(addr
, "0", &hints
, &res
) != 0)
1283 DPRINTF("isipv6addr: got %d for %s\n", rv
, addr
);
1285 return (rv
== 1) ? 1 : 0;
1289 * Read a line from the FILE stream into buf/buflen using fgets(), so up
1290 * to buflen-1 chars will be read and the result will be NUL terminated.
1291 * If the line has a trailing newline it will be removed.
1292 * If the line is too long, excess characters will be read until
1293 * newline/EOF/error.
1294 * If EOF/error occurs or a too-long line is encountered and errormsg
1295 * isn't NULL, it will be changed to a description of the problem.
1296 * (The EOF message has a leading \n for cosmetic purposes).
1298 * >=0 length of line (excluding trailing newline) if all ok
1300 * -2 EOF encountered
1301 * -3 line was too long
1304 get_line(FILE *stream
, char *buf
, size_t buflen
, const char **errormsg
)
1309 if (fgets(buf
, buflen
, stream
) == NULL
) {
1310 if (feof(stream
)) { /* EOF */
1313 *errormsg
= "\nEOF received";
1314 } else { /* error */
1317 *errormsg
= "Error encountered";
1323 if (buf
[len
-1] == '\n') { /* clear any trailing newline */
1325 } else if (len
== buflen
-1) { /* line too long */
1326 while ((ch
= getchar()) != '\n' && ch
!= EOF
)
1329 *errormsg
= "Input line is too long";
1339 * Internal version of connect(2); sets socket buffer sizes,
1340 * binds to a specific local address (if set), and
1341 * supports a connection timeout using a non-blocking connect(2) with
1343 * Socket fcntl flags are temporarily updated to include O_NONBLOCK;
1344 * these will not be reverted on connection failure.
1345 * Returns 0 on success, or -1 upon failure (with an appropriate
1346 * error message displayed.)
1349 ftp_connect(int sock
, const struct sockaddr
*name
, socklen_t namelen
, int pe
)
1351 int flags
, rv
, timeout
, error
;
1353 struct timeval endtime
, now
, td
;
1354 struct pollfd pfd
[1];
1355 char hname
[NI_MAXHOST
];
1356 char sname
[NI_MAXSERV
];
1358 setupsockbufsize(sock
);
1359 if (getnameinfo(name
, namelen
,
1360 hname
, sizeof(hname
), sname
, sizeof(sname
),
1361 NI_NUMERICHOST
| NI_NUMERICSERV
) != 0) {
1362 strlcpy(hname
, "?", sizeof(hname
));
1363 strlcpy(sname
, "?", sizeof(sname
));
1366 if (bindai
!= NULL
) { /* bind to specific addr */
1367 struct addrinfo
*ai
;
1369 for (ai
= bindai
; ai
!= NULL
; ai
= ai
->ai_next
) {
1370 if (ai
->ai_family
== name
->sa_family
)
1375 if (bind(sock
, ai
->ai_addr
, ai
->ai_addrlen
) == -1) {
1376 char bname
[NI_MAXHOST
];
1380 if (getnameinfo(ai
->ai_addr
, ai
->ai_addrlen
,
1381 bname
, sizeof(bname
), NULL
, 0, NI_NUMERICHOST
) != 0)
1382 strlcpy(bname
, "?", sizeof(bname
));
1384 warn("Can't bind to `%s'", bname
);
1389 /* save current socket flags */
1390 if ((flags
= fcntl(sock
, F_GETFL
, 0)) == -1) {
1391 warn("Can't %s socket flags for connect to `%s:%s'",
1392 "save", hname
, sname
);
1395 /* set non-blocking connect */
1396 if (fcntl(sock
, F_SETFL
, flags
| O_NONBLOCK
) == -1) {
1397 warn("Can't set socket non-blocking for connect to `%s:%s'",
1402 /* NOTE: we now must restore socket flags on successful exit */
1405 pfd
[0].events
= POLLIN
|POLLOUT
;
1407 if (quit_time
> 0) { /* want a non default timeout */
1408 (void)gettimeofday(&endtime
, NULL
);
1409 endtime
.tv_sec
+= quit_time
; /* determine end time */
1412 rv
= connect(sock
, name
, namelen
); /* inititate the connection */
1413 if (rv
== -1) { /* connection error */
1414 if (errno
!= EINPROGRESS
) { /* error isn't "please wait" */
1415 if (pe
|| (errno
!= EHOSTUNREACH
))
1417 warn("Can't connect to `%s:%s'", hname
, sname
);
1421 /* connect EINPROGRESS; wait */
1423 if (quit_time
> 0) { /* determine timeout */
1424 (void)gettimeofday(&now
, NULL
);
1425 timersub(&endtime
, &now
, &td
);
1426 timeout
= td
.tv_sec
* 1000 + td
.tv_usec
/1000;
1433 rv
= ftp_poll(pfd
, 1, timeout
);
1434 /* loop until poll ! EINTR */
1435 } while (rv
== -1 && errno
== EINTR
);
1437 if (rv
== 0) { /* poll (connect) timed out */
1442 if (rv
== -1) { /* poll error */
1444 } else if (pfd
[0].revents
& (POLLIN
|POLLOUT
)) {
1445 slen
= sizeof(error
); /* OK, or pending error */
1446 if (getsockopt(sock
, SOL_SOCKET
, SO_ERROR
,
1447 &error
, &slen
) == -1) {
1448 /* Solaris pending error */
1450 } else if (error
!= 0) {
1451 errno
= error
; /* BSD pending error */
1455 errno
= EBADF
; /* this shouldn't happen ... */
1460 if (fcntl(sock
, F_SETFL
, flags
) == -1) {
1461 /* restore socket flags */
1462 warn("Can't %s socket flags for connect to `%s:%s'",
1463 "restore", hname
, sname
);
1470 * Internal version of listen(2); sets socket buffer sizes first.
1473 ftp_listen(int sock
, int backlog
)
1476 setupsockbufsize(sock
);
1477 return (listen(sock
, backlog
));
1481 * Internal version of poll(2), to allow reimplementation by select(2)
1482 * on platforms without the former.
1485 ftp_poll(struct pollfd
*fds
, int nfds
, int timeout
)
1487 return poll(fds
, nfds
, timeout
);
1491 * malloc() with inbuilt error checking
1494 ftp_malloc(size_t size
)
1500 err(1, "Unable to allocate %ld bytes of memory", (long)size
);
1505 * sl_init() with inbuilt error checking
1514 err(1, "Unable to allocate memory for stringlist");
1519 * sl_add() with inbuilt error checking
1522 ftp_sl_add(StringList
*sl
, char *i
)
1525 if (sl_add(sl
, i
) == -1)
1526 err(1, "Unable to add `%s' to stringlist", i
);
1530 * strdup() with inbuilt error checking
1533 ftp_strdup(const char *str
)
1538 errx(1, "ftp_strdup: called with NULL argument");
1541 err(1, "Unable to allocate memory for string copy");