Annotation of src/usr.bin/ftp/fetch.c, Revision 1.99
1.99 ! lukem 1: /* $NetBSD: fetch.c,v 1.98 1999/12/03 06:10:01 itojun Exp $ */
1.1 lukem 2:
3: /*-
1.84 lukem 4: * Copyright (c) 1997-1999 The NetBSD Foundation, Inc.
1.1 lukem 5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
1.54 lukem 8: * by Luke Mewburn.
1.1 lukem 9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
1.84 lukem 20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
1.1 lukem 22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.14 lukem 29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1 lukem 31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
38:
1.12 lukem 39: #include <sys/cdefs.h>
1.1 lukem 40: #ifndef lint
1.99 ! lukem 41: __RCSID("$NetBSD: fetch.c,v 1.98 1999/12/03 06:10:01 itojun Exp $");
1.1 lukem 42: #endif /* not lint */
43:
44: /*
45: * FTP User Program -- Command line file retrieval
46: */
47:
48: #include <sys/types.h>
49: #include <sys/param.h>
50: #include <sys/socket.h>
1.30 lukem 51: #include <sys/stat.h>
1.32 lukem 52: #include <sys/time.h>
1.1 lukem 53:
54: #include <netinet/in.h>
55:
1.2 lukem 56: #include <arpa/ftp.h>
1.1 lukem 57: #include <arpa/inet.h>
58:
59: #include <ctype.h>
60: #include <err.h>
1.22 lukem 61: #include <errno.h>
1.1 lukem 62: #include <netdb.h>
63: #include <fcntl.h>
64: #include <stdio.h>
65: #include <stdlib.h>
66: #include <string.h>
67: #include <unistd.h>
1.57 christos 68: #include <time.h>
1.24 lukem 69: #include <util.h>
1.1 lukem 70:
71: #include "ftp_var.h"
72:
1.27 lukem 73: typedef enum {
74: UNKNOWN_URL_T=-1,
75: HTTP_URL_T,
76: FTP_URL_T,
1.53 lukem 77: FILE_URL_T,
78: CLASSIC_URL_T
1.27 lukem 79: } url_t;
80:
1.96 lukem 81: void aborthttp __P((int));
1.54 lukem 82: static int auth_url __P((const char *, char **, const char *,
83: const char *));
1.50 lukem 84: static void base64_encode __P((const char *, size_t, char *));
1.52 lukem 85: static int go_fetch __P((const char *));
86: static int fetch_ftp __P((const char *));
87: static int fetch_url __P((const char *, const char *, char *, char *));
1.27 lukem 88: static int parse_url __P((const char *, const char *, url_t *, char **,
1.82 lukem 89: char **, char **, char **, in_port_t *,
90: char **));
1.50 lukem 91: static void url_decode __P((char *));
1.12 lukem 92:
1.42 lukem 93: static int redirect_loop;
94:
1.12 lukem 95:
1.25 lukem 96: #define ABOUT_URL "about:" /* propaganda */
97: #define FILE_URL "file://" /* file URL prefix */
1.1 lukem 98: #define FTP_URL "ftp://" /* ftp URL prefix */
99: #define HTTP_URL "http://" /* http URL prefix */
100:
101:
1.27 lukem 102: /*
1.44 lukem 103: * Generate authorization response based on given authentication challenge.
104: * Returns -1 if an error occurred, otherwise 0.
105: * Sets response to a malloc(3)ed string; caller should free.
106: */
107: static int
1.54 lukem 108: auth_url(challenge, response, guser, gpass)
1.44 lukem 109: const char *challenge;
110: char **response;
1.54 lukem 111: const char *guser;
112: const char *gpass;
1.44 lukem 113: {
114: char *cp, *ep, *clear, *line, *realm, *scheme;
1.82 lukem 115: char user[BUFSIZ], *pass;
116: int rval;
117: size_t len, clen, rlen;
1.44 lukem 118:
119: *response = NULL;
120: clear = realm = scheme = NULL;
121: rval = -1;
122: line = xstrdup(challenge);
123: cp = line;
124:
125: if (debug)
126: fprintf(ttyout, "auth_url: challenge `%s'\n", challenge);
127:
128: scheme = strsep(&cp, " ");
1.91 lukem 129: #define SCHEME_BASIC "Basic"
1.44 lukem 130: if (strncasecmp(scheme, SCHEME_BASIC, sizeof(SCHEME_BASIC) - 1) != 0) {
131: warnx("Unsupported WWW Authentication challenge - `%s'",
132: challenge);
133: goto cleanup_auth_url;
134: }
135: cp += strspn(cp, " ");
136:
1.91 lukem 137: #define REALM "realm=\""
1.44 lukem 138: if (strncasecmp(cp, REALM, sizeof(REALM) - 1) == 0)
139: cp += sizeof(REALM) - 1;
140: else {
141: warnx("Unsupported WWW Authentication challenge - `%s'",
142: challenge);
143: goto cleanup_auth_url;
144: }
145: if ((ep = strchr(cp, '\"')) != NULL) {
146: size_t len = ep - cp;
147:
148: realm = (char *)xmalloc(len + 1);
1.78 lukem 149: (void)strlcpy(realm, cp, len + 1);
1.44 lukem 150: } else {
151: warnx("Unsupported WWW Authentication challenge - `%s'",
152: challenge);
153: goto cleanup_auth_url;
154: }
155:
1.78 lukem 156: if (guser != NULL)
157: (void)strlcpy(user, guser, sizeof(user));
158: else {
1.54 lukem 159: fprintf(ttyout, "Username for `%s': ", realm);
160: (void)fflush(ttyout);
1.90 lukem 161: if (fgets(user, sizeof(user) - 1, stdin) == NULL) {
162: clearerr(stdin);
1.54 lukem 163: goto cleanup_auth_url;
1.90 lukem 164: }
1.54 lukem 165: user[strlen(user) - 1] = '\0';
166: }
167: if (gpass != NULL)
168: pass = (char *)gpass;
169: else
170: pass = getpass("Password: ");
1.44 lukem 171:
1.72 lukem 172: clen = strlen(user) + strlen(pass) + 2; /* user + ":" + pass + "\0" */
173: clear = (char *)xmalloc(clen);
1.78 lukem 174: (void)strlcpy(clear, user, clen);
175: (void)strlcat(clear, ":", clen);
176: (void)strlcat(clear, pass, clen);
1.54 lukem 177: if (gpass == NULL)
1.80 lukem 178: memset(pass, 0, strlen(pass));
1.44 lukem 179:
1.64 lukem 180: /* scheme + " " + enc + "\0" */
1.74 lukem 181: rlen = strlen(scheme) + 1 + (clen + 2) * 4 / 3 + 1;
1.72 lukem 182: *response = (char *)xmalloc(rlen);
1.78 lukem 183: (void)strlcpy(*response, scheme, rlen);
1.72 lukem 184: len = strlcat(*response, " ", rlen);
185: base64_encode(clear, clen, *response + len);
1.80 lukem 186: memset(clear, 0, clen);
1.44 lukem 187: rval = 0;
188:
189: cleanup_auth_url:
190: FREEPTR(clear);
191: FREEPTR(line);
192: FREEPTR(realm);
193: return (rval);
194: }
195:
196: /*
197: * Encode len bytes starting at clear using base64 encoding into encoded,
198: * which should be at least ((len + 2) * 4 / 3 + 1) in size.
199: */
200: void
1.50 lukem 201: base64_encode(clear, len, encoded)
1.44 lukem 202: const char *clear;
203: size_t len;
204: char *encoded;
205: {
206: static const char enc[] =
207: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
1.82 lukem 208: char *cp;
209: int i;
1.44 lukem 210:
211: cp = encoded;
212: for (i = 0; i < len; i += 3) {
213: *(cp++) = enc[((clear[i + 0] >> 2))];
214: *(cp++) = enc[((clear[i + 0] << 4) & 0x30)
215: | ((clear[i + 1] >> 4) & 0x0f)];
216: *(cp++) = enc[((clear[i + 1] << 2) & 0x3c)
217: | ((clear[i + 2] >> 6) & 0x03)];
218: *(cp++) = enc[((clear[i + 2] ) & 0x3f)];
219: }
220: *cp = '\0';
221: while (i-- > len)
222: *(--cp) = '=';
223: }
224:
1.50 lukem 225: /*
226: * Decode %xx escapes in given string, `in-place'.
227: */
228: static void
229: url_decode(url)
230: char *url;
231: {
232: unsigned char *p, *q;
233:
234: if (EMPTYSTRING(url))
235: return;
1.75 lukem 236: p = q = (unsigned char *)url;
1.50 lukem 237:
1.91 lukem 238: #define HEXTOINT(x) (x - (isdigit(x) ? '0' : (islower(x) ? 'a' : 'A') - 10))
1.50 lukem 239: while (*p) {
240: if (p[0] == '%'
241: && p[1] && isxdigit((unsigned char)p[1])
242: && p[2] && isxdigit((unsigned char)p[2])) {
243: *q++ = HEXTOINT(p[1]) * 16 + HEXTOINT(p[2]);
244: p+=3;
245: } else
246: *q++ = *p++;
247: }
248: *q = '\0';
249: }
250:
1.44 lukem 251:
252: /*
1.27 lukem 253: * Parse URL of form:
1.63 lukem 254: * <type>://[<user>[:<password>@]]<host>[:<port>][/<path>]
1.27 lukem 255: * Returns -1 if a parse error occurred, otherwise 0.
1.50 lukem 256: * It's the caller's responsibility to url_decode() the returned
257: * user, pass and path.
1.63 lukem 258: *
1.27 lukem 259: * Sets type to url_t, each of the given char ** pointers to a
260: * malloc(3)ed strings of the relevant section, and port to
1.41 lukem 261: * the number given, or ftpport if ftp://, or httpport if http://.
1.52 lukem 262: *
1.63 lukem 263: * If <host> is surrounded by `[' and ']', it's parsed as an
264: * IPv6 address (as per draft-ietf-ipngwg-url-literal-01.txt).
265: *
266: * XXX: this is not totally RFC 1738 compliant; <path> will have the
1.53 lukem 267: * leading `/' unless it's an ftp:// URL, as this makes things easier
268: * for file:// and http:// URLs. ftp:// URLs have the `/' between the
269: * host and the url-path removed, but any additional leading slashes
270: * in the url-path are retained (because they imply that we should
271: * later do "CWD" with a null argument).
272: *
273: * Examples:
274: * input url output path
275: * --------- -----------
1.63 lukem 276: * "ftp://host" NULL
277: * "http://host/" NULL
278: * "file://host/dir/file" "dir/file"
279: * "ftp://host/" ""
280: * "ftp://host//" NULL
1.53 lukem 281: * "ftp://host//dir/file" "/dir/file"
1.27 lukem 282: */
283: static int
1.82 lukem 284: parse_url(url, desc, type, user, pass, host, port, portnum, path)
1.27 lukem 285: const char *url;
286: const char *desc;
287: url_t *type;
288: char **user;
289: char **pass;
290: char **host;
1.60 itojun 291: char **port;
1.82 lukem 292: in_port_t *portnum;
1.27 lukem 293: char **path;
294: {
1.82 lukem 295: const char *origurl;
296: char *cp, *ep, *thost, *tport;
297: size_t len;
1.27 lukem 298:
299: if (url == NULL || desc == NULL || type == NULL || user == NULL
1.82 lukem 300: || pass == NULL || host == NULL || port == NULL || portnum == NULL
301: || path == NULL)
1.27 lukem 302: errx(1, "parse_url: invoked with NULL argument!");
303:
1.82 lukem 304: origurl = url;
1.27 lukem 305: *type = UNKNOWN_URL_T;
1.63 lukem 306: *user = *pass = *host = *port = *path = NULL;
1.82 lukem 307: *portnum = 0;
1.63 lukem 308: tport = NULL;
1.27 lukem 309:
310: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
311: url += sizeof(HTTP_URL) - 1;
312: *type = HTTP_URL_T;
1.82 lukem 313: *portnum = HTTP_PORT;
1.63 lukem 314: tport = httpport;
1.27 lukem 315: } else if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
316: url += sizeof(FTP_URL) - 1;
317: *type = FTP_URL_T;
1.82 lukem 318: *portnum = FTP_PORT;
1.63 lukem 319: tport = ftpport;
1.27 lukem 320: } else if (strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
321: url += sizeof(FILE_URL) - 1;
322: *type = FILE_URL_T;
323: } else {
324: warnx("Invalid %s `%s'", desc, url);
325: cleanup_parse_url:
326: FREEPTR(*user);
327: FREEPTR(*pass);
328: FREEPTR(*host);
1.60 itojun 329: FREEPTR(*port);
1.27 lukem 330: FREEPTR(*path);
331: return (-1);
332: }
333:
334: if (*url == '\0')
335: return (0);
336:
337: /* find [user[:pass]@]host[:port] */
338: ep = strchr(url, '/');
339: if (ep == NULL)
340: thost = xstrdup(url);
341: else {
1.50 lukem 342: len = ep - url;
1.27 lukem 343: thost = (char *)xmalloc(len + 1);
1.78 lukem 344: (void)strlcpy(thost, url, len + 1);
1.53 lukem 345: if (*type == FTP_URL_T) /* skip first / for ftp URLs */
346: ep++;
1.27 lukem 347: *path = xstrdup(ep);
348: }
349:
1.63 lukem 350: cp = strchr(thost, '@'); /* look for user[:pass]@ in URLs */
1.54 lukem 351: if (cp != NULL) {
352: if (*type == FTP_URL_T)
353: anonftp = 0; /* disable anonftp */
1.27 lukem 354: *user = thost;
355: *cp = '\0';
1.63 lukem 356: thost = xstrdup(cp + 1);
1.27 lukem 357: cp = strchr(*user, ':');
358: if (cp != NULL) {
359: *cp = '\0';
360: *pass = xstrdup(cp + 1);
361: }
1.63 lukem 362: }
363:
364: #ifdef INET6
365: /*
366: * Check if thost is an encoded IPv6 address, as per
367: * draft-ietf-ipngwg-url-literal-01.txt:
368: * `[' ipv6-address ']'
369: */
370: if (*thost == '[') {
371: cp = thost + 1;
372: if ((ep = strchr(cp, ']')) == NULL ||
373: (ep[1] != '\0' && ep[1] != '\0')) {
374: warnx("Invalid address `%s' in %s `%s'",
1.82 lukem 375: thost, desc, origurl);
1.63 lukem 376: goto cleanup_parse_url;
377: }
378: len = ep - cp; /* change `[xxx]' -> `xxx' */
379: memmove(thost, thost + 1, len);
380: thost[len] = '\0';
381: if (! isipv6addr(thost)) {
382: warnx("Invalid IPv6 address `%s' in %s `%s'",
1.82 lukem 383: thost, desc, origurl);
1.63 lukem 384: goto cleanup_parse_url;
385: }
386: cp = ep + 1;
387: if (*cp == ':')
388: cp++;
389: else
390: cp = NULL;
1.27 lukem 391: } else
1.63 lukem 392: #endif /* INET6 */
393: if ((cp = strchr(thost, ':')) != NULL)
394: *cp++ = '\0';
395: *host = thost;
1.60 itojun 396:
1.27 lukem 397: /* look for [:port] */
398: if (cp != NULL) {
1.82 lukem 399: long nport;
1.27 lukem 400:
1.63 lukem 401: nport = strtol(cp, &ep, 10);
1.82 lukem 402: if (*ep != '\0' && ep == cp) {
403: struct servent *svp;
404:
405: svp = getservbyname(cp, "tcp");
406: if (svp == NULL) {
407: warnx("Unknown port `%s' in %s `%s'",
408: cp, desc, origurl);
409: goto cleanup_parse_url;
410: } else
411: nport = ntohs(svp->s_port);
412: } else if (nport < 1 || nport > MAX_IN_PORT_T || *ep != '\0') {
413: warnx("Invalid port `%s' in %s `%s'", cp, desc,
414: origurl);
1.27 lukem 415: goto cleanup_parse_url;
416: }
1.82 lukem 417: *portnum = nport;
1.63 lukem 418: tport = cp;
1.27 lukem 419: }
1.82 lukem 420:
1.95 lukem 421: if (tport != NULL)
1.63 lukem 422: *port = xstrdup(tport);
1.81 lukem 423: if (*path == NULL)
424: *path = xstrdup("");
1.27 lukem 425:
426: if (debug)
427: fprintf(ttyout,
1.82 lukem 428: "parse_url: user `%s' pass `%s' host %s:%s(%d) path `%s'\n",
1.53 lukem 429: *user ? *user : "<null>", *pass ? *pass : "<null>",
1.60 itojun 430: *host ? *host : "<null>", *port ? *port : "<null>",
1.82 lukem 431: *portnum ? *portnum : -1, *path ? *path : "<null>");
1.27 lukem 432:
433: return (0);
434: }
435:
1.89 lukem 436: sigjmp_buf httpabort;
1.2 lukem 437:
1.1 lukem 438: /*
1.50 lukem 439: * Retrieve URL, via a proxy if necessary, using HTTP.
440: * If proxyenv is set, use that for the proxy, otherwise try ftp_proxy or
441: * http_proxy as appropriate.
442: * Supports HTTP redirects.
1.41 lukem 443: * Returns -1 on failure, 0 on completed xfer, 1 if ftp connection
444: * is still open (e.g, ftp xfer with trailing /)
1.1 lukem 445: */
1.12 lukem 446: static int
1.52 lukem 447: fetch_url(url, proxyenv, proxyauth, wwwauth)
1.44 lukem 448: const char *url;
449: const char *proxyenv;
450: char *proxyauth;
451: char *wwwauth;
1.1 lukem 452: {
1.66 christos 453: #ifdef NI_NUMERICHOST
1.98 itojun 454: struct addrinfo hints, *res, *res0 = NULL;
1.66 christos 455: int error;
1.98 itojun 456: char hbuf[NI_MAXHOST];
1.66 christos 457: #else
458: struct sockaddr_in sin;
459: struct hostent *hp = NULL;
460: #endif
1.42 lukem 461: volatile sig_t oldintr, oldintp;
462: volatile int s;
1.95 lukem 463: struct stat sb;
1.96 lukem 464: int ischunked, isproxy, rval, hcode;
1.42 lukem 465: size_t len;
1.73 lukem 466: static size_t bufsize;
467: static char *xferbuf;
1.44 lukem 468: char *cp, *ep, *buf, *savefile;
469: char *auth, *location, *message;
1.63 lukem 470: char *user, *pass, *host, *port, *path, *decodedpath;
1.54 lukem 471: char *puser, *ppass;
1.95 lukem 472: off_t hashbytes, rangestart, rangeend, entitylen;
1.42 lukem 473: int (*closefunc) __P((FILE *));
474: FILE *fin, *fout;
475: time_t mtime;
476: url_t urltype;
1.60 itojun 477: in_port_t portnum;
1.1 lukem 478:
1.86 lukem 479: oldintr = oldintp = NULL;
1.22 lukem 480: closefunc = NULL;
1.24 lukem 481: fin = fout = NULL;
1.1 lukem 482: s = -1;
1.44 lukem 483: buf = savefile = NULL;
484: auth = location = message = NULL;
1.52 lukem 485: ischunked = isproxy = hcode = 0;
1.42 lukem 486: rval = 1;
1.54 lukem 487: user = pass = host = path = decodedpath = puser = ppass = NULL;
1.1 lukem 488:
1.27 lukem 489: #ifdef __GNUC__ /* shut up gcc warnings */
1.22 lukem 490: (void)&closefunc;
1.24 lukem 491: (void)&fin;
1.22 lukem 492: (void)&fout;
1.24 lukem 493: (void)&buf;
1.12 lukem 494: (void)&savefile;
1.42 lukem 495: (void)&rval;
1.28 fvdl 496: (void)&isproxy;
1.51 christos 497: (void)&hcode;
498: (void)&ischunked;
499: (void)&message;
500: (void)&location;
501: (void)&auth;
502: (void)&decodedpath;
1.12 lukem 503: #endif
504:
1.82 lukem 505: if (parse_url(url, "URL", &urltype, &user, &pass, &host, &port,
506: &portnum, &path) == -1)
1.42 lukem 507: goto cleanup_fetch_url;
1.5 lukem 508:
1.27 lukem 509: if (urltype == FILE_URL_T && ! EMPTYSTRING(host)
510: && strcasecmp(host, "localhost") != 0) {
511: warnx("No support for non local file URL `%s'", url);
1.42 lukem 512: goto cleanup_fetch_url;
1.9 lukem 513: }
1.27 lukem 514:
1.9 lukem 515: if (EMPTYSTRING(path)) {
1.42 lukem 516: if (urltype == FTP_URL_T) {
1.52 lukem 517: rval = fetch_ftp(url);
1.42 lukem 518: goto cleanup_fetch_url;
519: }
1.27 lukem 520: if (urltype != HTTP_URL_T || outfile == NULL) {
521: warnx("Invalid URL (no file after host) `%s'", url);
1.42 lukem 522: goto cleanup_fetch_url;
1.27 lukem 523: }
1.9 lukem 524: }
1.1 lukem 525:
1.50 lukem 526: decodedpath = xstrdup(path);
527: url_decode(decodedpath);
528:
1.22 lukem 529: if (outfile)
1.29 lukem 530: savefile = xstrdup(outfile);
1.22 lukem 531: else {
1.50 lukem 532: cp = strrchr(decodedpath, '/'); /* find savefile */
1.29 lukem 533: if (cp != NULL)
534: savefile = xstrdup(cp + 1);
1.22 lukem 535: else
1.50 lukem 536: savefile = xstrdup(decodedpath);
1.22 lukem 537: }
1.9 lukem 538: if (EMPTYSTRING(savefile)) {
1.42 lukem 539: if (urltype == FTP_URL_T) {
1.52 lukem 540: rval = fetch_ftp(url);
1.42 lukem 541: goto cleanup_fetch_url;
542: }
1.27 lukem 543: warnx("Invalid URL (no file after directory) `%s'", url);
1.42 lukem 544: goto cleanup_fetch_url;
1.52 lukem 545: } else {
546: if (debug)
547: fprintf(ttyout, "got savefile as `%s'\n", savefile);
1.9 lukem 548: }
1.1 lukem 549:
1.95 lukem 550: restart_point = 0;
1.25 lukem 551: filesize = -1;
1.95 lukem 552: rangestart = rangeend = entitylen = -1;
1.25 lukem 553: mtime = -1;
1.95 lukem 554: if (restartautofetch) {
555: if (strcmp(savefile, "-") != 0 && *savefile != '|' &&
556: stat(savefile, &sb) == 0)
557: restart_point = sb.st_size;
558: }
1.25 lukem 559: if (urltype == FILE_URL_T) { /* file:// URLs */
560: direction = "copied";
1.50 lukem 561: fin = fopen(decodedpath, "r");
1.25 lukem 562: if (fin == NULL) {
1.50 lukem 563: warn("Cannot open file `%s'", decodedpath);
1.42 lukem 564: goto cleanup_fetch_url;
1.5 lukem 565: }
1.25 lukem 566: if (fstat(fileno(fin), &sb) == 0) {
567: mtime = sb.st_mtime;
568: filesize = sb.st_size;
569: }
1.95 lukem 570: if (restart_point) {
571: if (lseek(fileno(fin), restart_point, SEEK_SET) < 0) {
572: warn("Can't lseek to restart `%s'",
573: decodedpath);
574: goto cleanup_fetch_url;
575: }
576: }
577: if (verbose) {
578: fprintf(ttyout, "Copying %s", decodedpath);
579: if (restart_point)
580: #ifndef NO_QUAD
581: fprintf(ttyout, " (restarting at %lld)",
582: (long long)restart_point);
583: #else
584: fprintf(ttyout, " (restarting at %ld)",
585: (long)restart_point);
586: #endif
587: fputs("\n", ttyout);
588: }
1.25 lukem 589: } else { /* ftp:// or http:// URLs */
1.65 lukem 590: char *leading;
591: int hasleading;
592:
1.42 lukem 593: if (proxyenv == NULL) {
594: if (urltype == HTTP_URL_T)
1.91 lukem 595: proxyenv = getoptionvalue("http_proxy");
1.42 lukem 596: else if (urltype == FTP_URL_T)
1.91 lukem 597: proxyenv = getoptionvalue("ftp_proxy");
1.42 lukem 598: }
1.25 lukem 599: direction = "retrieved";
1.91 lukem 600: if (! EMPTYSTRING(proxyenv)) { /* use proxy */
1.27 lukem 601: url_t purltype;
1.54 lukem 602: char *phost, *ppath;
1.91 lukem 603: char *pport, *no_proxy;
1.27 lukem 604:
605: isproxy = 1;
606:
607: /* check URL against list of no_proxied sites */
1.91 lukem 608: no_proxy = getoptionvalue("no_proxy");
609: if (! EMPTYSTRING(no_proxy)) {
1.27 lukem 610: char *np, *np_copy;
611: long np_port;
612: size_t hlen, plen;
613:
614: np_copy = xstrdup(no_proxy);
615: hlen = strlen(host);
616: while ((cp = strsep(&np_copy, " ,")) != NULL) {
617: if (*cp == '\0')
618: continue;
1.60 itojun 619: if ((np = strrchr(cp, ':')) != NULL) {
1.27 lukem 620: *np = '\0';
621: np_port =
622: strtol(np + 1, &ep, 10);
623: if (*ep != '\0')
624: continue;
1.82 lukem 625: if (np_port != portnum)
1.27 lukem 626: continue;
627: }
628: plen = strlen(cp);
629: if (strncasecmp(host + hlen - plen,
630: cp, plen) == 0) {
631: isproxy = 0;
632: break;
633: }
634: }
635: FREEPTR(np_copy);
1.25 lukem 636: }
1.1 lukem 637:
1.27 lukem 638: if (isproxy) {
639: if (parse_url(proxyenv, "proxy URL", &purltype,
1.82 lukem 640: &puser, &ppass, &phost, &pport, &portnum,
641: &ppath) == -1)
1.42 lukem 642: goto cleanup_fetch_url;
1.27 lukem 643:
644: if ((purltype != HTTP_URL_T
645: && purltype != FTP_URL_T) ||
646: EMPTYSTRING(phost) ||
647: (! EMPTYSTRING(ppath)
648: && strcmp(ppath, "/") != 0)) {
649: warnx("Malformed proxy URL `%s'",
650: proxyenv);
651: FREEPTR(phost);
1.60 itojun 652: FREEPTR(pport);
1.27 lukem 653: FREEPTR(ppath);
1.42 lukem 654: goto cleanup_fetch_url;
1.27 lukem 655: }
1.12 lukem 656:
1.27 lukem 657: FREEPTR(host);
658: host = phost;
1.62 tron 659: FREEPTR(port);
660: port = pport;
1.27 lukem 661: FREEPTR(path);
1.54 lukem 662: path = xstrdup(url);
1.27 lukem 663: FREEPTR(ppath);
664: }
1.91 lukem 665: } /* ! EMPTYSTRING(proxyenv) */
1.25 lukem 666:
1.66 christos 667: #ifndef NI_NUMERICHOST
1.25 lukem 668: memset(&sin, 0, sizeof(sin));
669: sin.sin_family = AF_INET;
670:
671: if (isdigit((unsigned char)host[0])) {
672: if (inet_aton(host, &sin.sin_addr) == 0) {
1.27 lukem 673: warnx("Invalid IP address `%s'", host);
1.42 lukem 674: goto cleanup_fetch_url;
1.25 lukem 675: }
676: } else {
677: hp = gethostbyname(host);
678: if (hp == NULL) {
679: warnx("%s: %s", host, hstrerror(h_errno));
1.42 lukem 680: goto cleanup_fetch_url;
1.25 lukem 681: }
682: if (hp->h_addrtype != AF_INET) {
1.27 lukem 683: warnx("`%s': not an Internet address?", host);
1.42 lukem 684: goto cleanup_fetch_url;
1.25 lukem 685: }
1.66 christos 686: if (hp->h_length > sizeof(sin.sin_addr))
687: hp->h_length = sizeof(sin.sin_addr);
1.25 lukem 688: memcpy(&sin.sin_addr, hp->h_addr, hp->h_length);
1.1 lukem 689: }
1.82 lukem 690: sin.sin_port = htons(portnum);
1.25 lukem 691:
692: s = socket(AF_INET, SOCK_STREAM, 0);
693: if (s == -1) {
694: warn("Can't create socket");
1.42 lukem 695: goto cleanup_fetch_url;
1.22 lukem 696: }
1.1 lukem 697:
1.25 lukem 698: while (xconnect(s, (struct sockaddr *)&sin,
699: sizeof(sin)) == -1) {
700: if (errno == EINTR)
701: continue;
702: if (hp && hp->h_addr_list[1]) {
703: int oerrno = errno;
704: char *ia;
705:
706: ia = inet_ntoa(sin.sin_addr);
707: errno = oerrno;
1.27 lukem 708: warn("Connect to address `%s'", ia);
1.25 lukem 709: hp->h_addr_list++;
710: memcpy(&sin.sin_addr, hp->h_addr_list[0],
711: (size_t)hp->h_length);
1.49 lukem 712: if (verbose)
713: fprintf(ttyout, "Trying %s...\n",
714: inet_ntoa(sin.sin_addr));
1.25 lukem 715: (void)close(s);
716: s = socket(AF_INET, SOCK_STREAM, 0);
717: if (s < 0) {
718: warn("Can't create socket");
1.42 lukem 719: goto cleanup_fetch_url;
1.25 lukem 720: }
721: continue;
722: }
1.27 lukem 723: warn("Can't connect to `%s'", host);
1.42 lukem 724: goto cleanup_fetch_url;
1.25 lukem 725: }
1.60 itojun 726: #else
727: memset(&hints, 0, sizeof(hints));
1.65 lukem 728: hints.ai_flags = 0;
1.60 itojun 729: hints.ai_family = AF_UNSPEC;
730: hints.ai_socktype = SOCK_STREAM;
731: hints.ai_protocol = 0;
1.98 itojun 732: error = getaddrinfo(host, port, &hints, &res0);
1.60 itojun 733: if (error) {
1.69 mycroft 734: warnx(gai_strerror(error));
1.60 itojun 735: goto cleanup_fetch_url;
736: }
1.98 itojun 737: if (res0->ai_canonname)
738: host = res0->ai_canonname;
1.60 itojun 739:
1.98 itojun 740: s = -1;
741: for (res = res0; res; res = res->ai_next) {
742: if (getnameinfo(res->ai_addr, res->ai_addrlen,
743: hbuf, sizeof(hbuf), NULL, 0,
744: NI_NUMERICHOST) != 0)
745: strncpy(hbuf, "invalid", sizeof(hbuf));
746:
747: if (verbose && res != res0)
748: fprintf(ttyout, "Trying %s...\n", hbuf);
749:
750: s = socket(res->ai_family, res->ai_socktype,
751: res->ai_protocol);
1.60 itojun 752: if (s < 0) {
753: warn("Can't create socket");
1.98 itojun 754: continue;
1.60 itojun 755: }
756:
757: if (xconnect(s, res->ai_addr, res->ai_addrlen) < 0) {
758: warn("Connect to address `%s'", hbuf);
759: close(s);
1.98 itojun 760: s = -1;
761: continue;
1.60 itojun 762: }
1.98 itojun 763:
764: /* success */
1.60 itojun 765: break;
766: }
1.98 itojun 767: freeaddrinfo(res0);
768:
769: if (s < 0) {
770: warn("Can't connect to %s", host);
771: goto cleanup_fetch_url;
772: }
1.60 itojun 773: #endif
1.24 lukem 774:
1.25 lukem 775: fin = fdopen(s, "r+");
776: /*
1.27 lukem 777: * Construct and send the request.
1.25 lukem 778: */
1.65 lukem 779: if (verbose)
780: fprintf(ttyout, "Requesting %s\n", url);
781: leading = " (";
782: hasleading = 0;
1.27 lukem 783: if (isproxy) {
1.65 lukem 784: if (verbose) {
785: fprintf(ttyout, "%svia %s:%s", leading,
786: host, port);
787: leading = ", ";
788: hasleading++;
789: }
1.44 lukem 790: fprintf(fin, "GET %s HTTP/1.0\r\n", path);
1.47 lukem 791: if (flushcache)
792: fprintf(fin, "Pragma: no-cache\r\n");
1.27 lukem 793: } else {
794: fprintf(fin, "GET %s HTTP/1.1\r\n", path);
1.93 lukem 795: fprintf(fin, "Host: %s:%d\r\n", host, portnum);
1.40 explorer 796: fprintf(fin, "Accept: */*\r\n");
1.42 lukem 797: fprintf(fin, "Connection: close\r\n");
1.95 lukem 798: if (restart_point) {
799: fputs(leading, ttyout);
800: #ifndef NO_QUAD
801: fprintf(fin, "Range: bytes=%lld-\r\n",
802: (long long)restart_point);
803: fprintf(ttyout, "restarting at %lld",
804: (long long)restart_point);
805: #else
806: fprintf(fin, "Range: bytes=%ld-\r\n",
807: (long)restart_point);
808: fprintf(ttyout, "restarting at %ld",
809: (long)restart_point);
810: #endif
811: leading = ", ";
812: hasleading++;
813: }
1.47 lukem 814: if (flushcache)
815: fprintf(fin, "Cache-Control: no-cache\r\n");
1.25 lukem 816: }
1.94 lukem 817: fprintf(fin, "User-Agent: %s/%s\r\n", FTP_PRODUCT, FTP_VERSION);
1.44 lukem 818: if (wwwauth) {
1.65 lukem 819: if (verbose) {
820: fprintf(ttyout, "%swith authorization",
821: leading);
822: leading = ", ";
823: hasleading++;
824: }
1.44 lukem 825: fprintf(fin, "Authorization: %s\r\n", wwwauth);
826: }
1.46 lukem 827: if (proxyauth) {
1.65 lukem 828: if (verbose) {
1.49 lukem 829: fprintf(ttyout,
1.65 lukem 830: "%swith proxy authorization", leading);
831: leading = ", ";
832: hasleading++;
833: }
1.44 lukem 834: fprintf(fin, "Proxy-Authorization: %s\r\n", proxyauth);
1.46 lukem 835: }
1.65 lukem 836: if (verbose && hasleading)
837: fputs(")\n", ttyout);
1.44 lukem 838: fprintf(fin, "\r\n");
1.25 lukem 839: if (fflush(fin) == EOF) {
840: warn("Writing HTTP request");
1.42 lukem 841: goto cleanup_fetch_url;
1.25 lukem 842: }
1.1 lukem 843:
1.25 lukem 844: /* Read the response */
1.24 lukem 845: if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0)) == NULL) {
846: warn("Receiving HTTP reply");
1.42 lukem 847: goto cleanup_fetch_url;
1.24 lukem 848: }
849: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
850: buf[--len] = '\0';
851: if (debug)
1.27 lukem 852: fprintf(ttyout, "received `%s'\n", buf);
1.1 lukem 853:
1.42 lukem 854: /* Determine HTTP response code */
1.25 lukem 855: cp = strchr(buf, ' ');
856: if (cp == NULL)
857: goto improper;
858: else
859: cp++;
1.42 lukem 860: hcode = strtol(cp, &ep, 10);
861: if (*ep != '\0' && !isspace((unsigned char)*ep))
862: goto improper;
863: message = xstrdup(cp);
1.25 lukem 864:
865: /* Read the rest of the header. */
1.27 lukem 866: FREEPTR(buf);
1.25 lukem 867: while (1) {
868: if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0))
869: == NULL) {
870: warn("Receiving HTTP reply");
1.42 lukem 871: goto cleanup_fetch_url;
1.25 lukem 872: }
873: while (len > 0 &&
874: (buf[len-1] == '\r' || buf[len-1] == '\n'))
875: buf[--len] = '\0';
876: if (len == 0)
877: break;
878: if (debug)
1.27 lukem 879: fprintf(ttyout, "received `%s'\n", buf);
1.25 lukem 880:
881: /* Look for some headers */
882: cp = buf;
1.42 lukem 883:
1.91 lukem 884: #define CONTENTLEN "Content-Length: "
1.25 lukem 885: if (strncasecmp(cp, CONTENTLEN,
1.44 lukem 886: sizeof(CONTENTLEN) - 1) == 0) {
1.25 lukem 887: cp += sizeof(CONTENTLEN) - 1;
1.95 lukem 888: #ifndef NO_QUAD
889: filesize = strtoq(cp, &ep, 10);
890: #else
1.25 lukem 891: filesize = strtol(cp, &ep, 10);
1.95 lukem 892: #endif
893: if (filesize < 0 || *ep != '\0')
1.25 lukem 894: goto improper;
895: if (debug)
896: #ifndef NO_QUAD
1.95 lukem 897: fprintf(ttyout, "parsed len as: %lld\n",
1.25 lukem 898: (long long)filesize);
899: #else
1.95 lukem 900: fprintf(ttyout, "parsed len as: %ld\n",
1.25 lukem 901: (long)filesize);
902: #endif
1.42 lukem 903:
1.95 lukem 904: #define CONTENTRANGE "Content-Range: bytes "
905: } else if (strncasecmp(cp, CONTENTRANGE,
906: sizeof(CONTENTRANGE) - 1) == 0) {
907: cp += sizeof(CONTENTRANGE) - 1;
908: #ifndef NO_QUAD
909: rangestart = strtoq(cp, &ep, 10);
910: #else
911: rangestart = strtol(cp, &ep, 10);
912: #endif
913: if (rangestart < 0 || *ep != '-')
914: goto improper;
915: cp = ep + 1;
916:
917: #ifndef NO_QUAD
918: rangeend = strtoq(cp, &ep, 10);
919: #else
920: rangeend = strtol(cp, &ep, 10);
921: #endif
922: if (rangeend < 0 || *ep != '/' ||
923: rangeend < rangestart)
924: goto improper;
925: cp = ep + 1;
926:
927: #ifndef NO_QUAD
928: entitylen = strtoq(cp, &ep, 10);
929: #else
930: entitylen = strtol(cp, &ep, 10);
931: #endif
932: if (entitylen < 0 || *ep != '\0')
933: goto improper;
934:
935: if (debug)
936: #ifndef NO_QUAD
937: fprintf(ttyout,
938: "parsed range as: %lld-%lld/%lld\n",
939: (long long)rangestart,
940: (long long)rangeend,
941: (long long)entitylen);
942: #else
943: fprintf(ttyout,
944: "parsed range as: %ld-%ld/%ld\n",
945: (long)rangestart,
946: (long)rangeend,
947: (long)entitylen);
948: #endif
949: if (! restart_point) {
950: warnx(
951: "Received unexpected Content-Range header");
952: goto cleanup_fetch_url;
953: }
954:
1.91 lukem 955: #define LASTMOD "Last-Modified: "
1.25 lukem 956: } else if (strncasecmp(cp, LASTMOD,
1.44 lukem 957: sizeof(LASTMOD) - 1) == 0) {
1.25 lukem 958: struct tm parsed;
959: char *t;
960:
961: cp += sizeof(LASTMOD) - 1;
962: /* RFC 1123 */
963: if ((t = strptime(cp,
964: "%a, %d %b %Y %H:%M:%S GMT",
965: &parsed))
966: /* RFC 850 */
967: || (t = strptime(cp,
968: "%a, %d-%b-%y %H:%M:%S GMT",
969: &parsed))
970: /* asctime */
971: || (t = strptime(cp,
972: "%a, %b %d %H:%M:%S %Y",
973: &parsed))) {
1.38 lukem 974: parsed.tm_isdst = -1;
1.25 lukem 975: if (*t == '\0')
1.76 lukem 976: mtime = timegm(&parsed);
1.38 lukem 977: if (debug && mtime != -1) {
1.25 lukem 978: fprintf(ttyout,
979: "parsed date as: %s",
980: ctime(&mtime));
1.38 lukem 981: }
1.25 lukem 982: }
1.42 lukem 983:
1.91 lukem 984: #define LOCATION "Location: "
1.42 lukem 985: } else if (strncasecmp(cp, LOCATION,
1.44 lukem 986: sizeof(LOCATION) - 1) == 0) {
1.25 lukem 987: cp += sizeof(LOCATION) - 1;
1.42 lukem 988: location = xstrdup(cp);
1.25 lukem 989: if (debug)
990: fprintf(ttyout,
991: "parsed location as: %s\n", cp);
1.44 lukem 992:
1.91 lukem 993: #define TRANSENC "Transfer-Encoding: "
1.45 lukem 994: } else if (strncasecmp(cp, TRANSENC,
995: sizeof(TRANSENC) - 1) == 0) {
996: cp += sizeof(TRANSENC) - 1;
997: if (strcasecmp(cp, "chunked") != 0) {
998: warnx(
999: "Unsupported transfer encoding - `%s'",
1000: cp);
1001: goto cleanup_fetch_url;
1002: }
1003: ischunked++;
1004: if (debug)
1005: fprintf(ttyout,
1006: "using chunked encoding\n");
1007:
1.91 lukem 1008: #define PROXYAUTH "Proxy-Authenticate: "
1.44 lukem 1009: } else if (strncasecmp(cp, PROXYAUTH,
1010: sizeof(PROXYAUTH) - 1) == 0) {
1011: cp += sizeof(PROXYAUTH) - 1;
1012: FREEPTR(auth);
1013: auth = xstrdup(cp);
1014: if (debug)
1015: fprintf(ttyout,
1016: "parsed proxy-auth as: %s\n", cp);
1017:
1.91 lukem 1018: #define WWWAUTH "WWW-Authenticate: "
1.44 lukem 1019: } else if (strncasecmp(cp, WWWAUTH,
1020: sizeof(WWWAUTH) - 1) == 0) {
1021: cp += sizeof(WWWAUTH) - 1;
1022: FREEPTR(auth);
1023: auth = xstrdup(cp);
1024: if (debug)
1025: fprintf(ttyout,
1026: "parsed www-auth as: %s\n", cp);
1027:
1.25 lukem 1028: }
1.44 lukem 1029:
1.24 lukem 1030: }
1.54 lukem 1031: /* finished parsing header */
1.27 lukem 1032: FREEPTR(buf);
1.1 lukem 1033:
1.52 lukem 1034: switch (hcode) {
1035: case 200:
1036: break;
1.95 lukem 1037: case 206:
1038: if (! restart_point) {
1039: warnx("Not expecting partial content header");
1040: goto cleanup_fetch_url;
1041: }
1042: break;
1.52 lukem 1043: case 300:
1044: case 301:
1045: case 302:
1046: case 303:
1047: case 305:
1048: if (EMPTYSTRING(location)) {
1049: warnx(
1050: "No redirection Location provided by server");
1051: goto cleanup_fetch_url;
1052: }
1053: if (redirect_loop++ > 5) {
1054: warnx("Too many redirections requested");
1055: goto cleanup_fetch_url;
1056: }
1057: if (hcode == 305) {
1058: if (verbose)
1059: fprintf(ttyout, "Redirected via %s\n",
1060: location);
1061: rval = fetch_url(url, location,
1062: proxyauth, wwwauth);
1063: } else {
1064: if (verbose)
1065: fprintf(ttyout, "Redirected to %s\n",
1066: location);
1067: rval = go_fetch(location);
1068: }
1.42 lukem 1069: goto cleanup_fetch_url;
1.52 lukem 1070: case 401:
1071: case 407:
1072: {
1073: char **authp;
1.54 lukem 1074: char *auser, *apass;
1.52 lukem 1075:
1076: fprintf(ttyout, "%s\n", message);
1077: if (EMPTYSTRING(auth)) {
1078: warnx(
1079: "No authentication challenge provided by server");
1080: goto cleanup_fetch_url;
1081: }
1.54 lukem 1082: if (hcode == 401) {
1083: authp = &wwwauth;
1084: auser = user;
1085: apass = pass;
1086: } else {
1087: authp = &proxyauth;
1088: auser = puser;
1089: apass = ppass;
1090: }
1.52 lukem 1091: if (*authp != NULL) {
1092: char reply[10];
1093:
1094: fprintf(ttyout,
1095: "Authorization failed. Retry (y/n)? ");
1.90 lukem 1096: if (fgets(reply, sizeof(reply), stdin)
1097: == NULL) {
1098: clearerr(stdin);
1.52 lukem 1099: goto cleanup_fetch_url;
1.90 lukem 1100: } else {
1101: if (tolower(reply[0]) != 'y')
1102: goto cleanup_fetch_url;
1103: }
1.54 lukem 1104: auser = NULL;
1105: apass = NULL;
1.52 lukem 1106: }
1.54 lukem 1107: if (auth_url(auth, authp, auser, apass) == 0) {
1.52 lukem 1108: rval = fetch_url(url, proxyenv,
1109: proxyauth, wwwauth);
1.80 lukem 1110: memset(*authp, 0, strlen(*authp));
1.52 lukem 1111: FREEPTR(*authp);
1112: }
1.42 lukem 1113: goto cleanup_fetch_url;
1.52 lukem 1114: }
1115: default:
1116: if (message)
1117: warnx("Error retrieving file - `%s'", message);
1118: else
1119: warnx("Unknown error retrieving file");
1.44 lukem 1120: goto cleanup_fetch_url;
1121: }
1.52 lukem 1122: } /* end of ftp:// or http:// specific setup */
1.42 lukem 1123:
1.22 lukem 1124: /* Open the output file. */
1125: if (strcmp(savefile, "-") == 0) {
1126: fout = stdout;
1127: } else if (*savefile == '|') {
1.77 lukem 1128: oldintp = xsignal(SIGPIPE, SIG_IGN);
1.22 lukem 1129: fout = popen(savefile + 1, "w");
1130: if (fout == NULL) {
1.27 lukem 1131: warn("Can't run `%s'", savefile + 1);
1.42 lukem 1132: goto cleanup_fetch_url;
1.22 lukem 1133: }
1134: closefunc = pclose;
1135: } else {
1.95 lukem 1136: if (restart_point){
1137: if (entitylen != -1)
1138: filesize = entitylen;
1139: if (rangestart != -1 && rangestart != restart_point) {
1140: warnx(
1141: "Size of `%s' differs from save file `%s'",
1142: url, savefile);
1143: goto cleanup_fetch_url;
1144: }
1145: fout = fopen(savefile, "a");
1146: } else
1147: fout = fopen(savefile, "w");
1.22 lukem 1148: if (fout == NULL) {
1.27 lukem 1149: warn("Can't open `%s'", savefile);
1.42 lukem 1150: goto cleanup_fetch_url;
1.22 lukem 1151: }
1152: closefunc = fclose;
1.1 lukem 1153: }
1154:
1.22 lukem 1155: /* Trap signals */
1.88 lukem 1156: if (sigsetjmp(httpabort, 1))
1.42 lukem 1157: goto cleanup_fetch_url;
1.86 lukem 1158: (void)xsignal(SIGQUIT, psummary);
1.77 lukem 1159: oldintr = xsignal(SIGINT, aborthttp);
1.2 lukem 1160:
1.73 lukem 1161: if (rcvbuf_size > bufsize) {
1162: if (xferbuf)
1163: (void)free(xferbuf);
1164: bufsize = rcvbuf_size;
1165: xferbuf = xmalloc(bufsize);
1166: }
1167:
1.1 lukem 1168: bytes = 0;
1169: hashbytes = mark;
1170: progressmeter(-1);
1.2 lukem 1171:
1.24 lukem 1172: /* Finally, suck down the file. */
1.45 lukem 1173: do {
1.77 lukem 1174: long chunksize;
1.45 lukem 1175:
1176: chunksize = 0;
1177: /* read chunksize */
1178: if (ischunked) {
1.73 lukem 1179: if (fgets(xferbuf, bufsize, fin) == NULL) {
1.45 lukem 1180: warnx("Unexpected EOF reading chunksize");
1181: goto cleanup_fetch_url;
1182: }
1.73 lukem 1183: chunksize = strtol(xferbuf, &ep, 16);
1.45 lukem 1184: if (strcmp(ep, "\r\n") != 0) {
1185: warnx("Unexpected data following chunksize");
1186: goto cleanup_fetch_url;
1187: }
1188: if (debug)
1.59 lukem 1189: fprintf(ttyout,
1190: #ifndef NO_QUAD
1.75 lukem 1191: "got chunksize of %lld\n",
1.45 lukem 1192: (long long)chunksize);
1.59 lukem 1193: #else
1194: "got chunksize of %ld\n",
1195: (long)chunksize);
1196: #endif
1.45 lukem 1197: if (chunksize == 0)
1198: break;
1199: }
1.59 lukem 1200: /* transfer file or chunk */
1201: while (1) {
1202: struct timeval then, now, td;
1203: off_t bufrem;
1204:
1.71 lukem 1205: if (rate_get)
1206: (void)gettimeofday(&then, NULL);
1.73 lukem 1207: bufrem = rate_get ? rate_get : bufsize;
1.59 lukem 1208: while (bufrem > 0) {
1.73 lukem 1209: len = fread(xferbuf, sizeof(char),
1210: ischunked ? MIN(chunksize, bufrem)
1211: : bufsize, fin);
1.59 lukem 1212: if (len <= 0)
1213: goto chunkdone;
1214: bytes += len;
1215: bufrem -= len;
1.73 lukem 1216: if (fwrite(xferbuf, sizeof(char), len, fout)
1.59 lukem 1217: != len) {
1218: warn("Writing `%s'", savefile);
1219: goto cleanup_fetch_url;
1220: }
1.45 lukem 1221: }
1222: if (hash && !progress) {
1223: while (bytes >= hashbytes) {
1224: (void)putc('#', ttyout);
1225: hashbytes += mark;
1226: }
1227: (void)fflush(ttyout);
1228: }
1.59 lukem 1229: if (ischunked) {
1.45 lukem 1230: chunksize -= len;
1.59 lukem 1231: if (chunksize <= 0)
1232: goto chunkdone;
1233: }
1234: if (rate_get) {
1235: while (1) {
1236: (void)gettimeofday(&now, NULL);
1237: timersub(&now, &then, &td);
1238: if (td.tv_sec > 0)
1239: break;
1240: usleep(1000000 - td.tv_usec);
1241: }
1242: }
1.1 lukem 1243: }
1.45 lukem 1244: /* read CRLF after chunk*/
1.59 lukem 1245: chunkdone:
1.45 lukem 1246: if (ischunked) {
1.73 lukem 1247: if (fgets(xferbuf, bufsize, fin) == NULL)
1.45 lukem 1248: break;
1.73 lukem 1249: if (strcmp(xferbuf, "\r\n") != 0) {
1.45 lukem 1250: warnx("Unexpected data following chunk");
1251: goto cleanup_fetch_url;
1.1 lukem 1252: }
1253: }
1.45 lukem 1254: } while (ischunked);
1.1 lukem 1255: if (hash && !progress && bytes > 0) {
1256: if (bytes < mark)
1.22 lukem 1257: (void)putc('#', ttyout);
1258: (void)putc('\n', ttyout);
1.1 lukem 1259: }
1.25 lukem 1260: if (ferror(fin)) {
1261: warn("Reading file");
1.42 lukem 1262: goto cleanup_fetch_url;
1.1 lukem 1263: }
1.2 lukem 1264: progressmeter(1);
1.85 lukem 1265: bytes = 0;
1.25 lukem 1266: (void)fflush(fout);
1267: if (closefunc == fclose && mtime != -1) {
1268: struct timeval tval[2];
1269:
1270: (void)gettimeofday(&tval[0], NULL);
1271: tval[1].tv_sec = mtime;
1272: tval[1].tv_usec = 0;
1.31 lukem 1273: (*closefunc)(fout);
1274: fout = NULL;
1275:
1276: if (utimes(savefile, tval) == -1) {
1.25 lukem 1277: fprintf(ttyout,
1278: "Can't change modification time to %s",
1279: asctime(localtime(&mtime)));
1280: }
1281: }
1282: if (bytes > 0)
1283: ptransfer(0);
1.1 lukem 1284:
1.42 lukem 1285: rval = 0;
1286: goto cleanup_fetch_url;
1.11 lukem 1287:
1.1 lukem 1288: improper:
1.27 lukem 1289: warnx("Improper response from `%s'", host);
1.11 lukem 1290:
1.42 lukem 1291: cleanup_fetch_url:
1.86 lukem 1292: if (oldintr)
1293: (void)xsignal(SIGINT, oldintr);
1294: if (oldintp)
1295: (void)xsignal(SIGPIPE, oldintp);
1.24 lukem 1296: if (fin != NULL)
1297: fclose(fin);
1298: else if (s != -1)
1.1 lukem 1299: close(s);
1.22 lukem 1300: if (closefunc != NULL && fout != NULL)
1301: (*closefunc)(fout);
1.29 lukem 1302: FREEPTR(savefile);
1.27 lukem 1303: FREEPTR(user);
1304: FREEPTR(pass);
1305: FREEPTR(host);
1.60 itojun 1306: FREEPTR(port);
1.27 lukem 1307: FREEPTR(path);
1.50 lukem 1308: FREEPTR(decodedpath);
1.54 lukem 1309: FREEPTR(puser);
1310: FREEPTR(ppass);
1.27 lukem 1311: FREEPTR(buf);
1.44 lukem 1312: FREEPTR(auth);
1.42 lukem 1313: FREEPTR(location);
1314: FREEPTR(message);
1315: return (rval);
1.1 lukem 1316: }
1317:
1318: /*
1.50 lukem 1319: * Abort a HTTP retrieval
1.2 lukem 1320: */
1321: void
1.3 lukem 1322: aborthttp(notused)
1323: int notused;
1.2 lukem 1324: {
1.88 lukem 1325: char msgbuf[100];
1326: int len;
1.2 lukem 1327:
1328: alarmtimer(0);
1.88 lukem 1329: len = strlcpy(msgbuf, "\nHTTP fetch aborted.\n", sizeof(msgbuf));
1330: write(fileno(ttyout), msgbuf, len);
1331: siglongjmp(httpabort, 1);
1.2 lukem 1332: }
1333:
1334: /*
1.50 lukem 1335: * Retrieve ftp URL or classic ftp argument using FTP.
1.63 lukem 1336: * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
1.42 lukem 1337: * is still open (e.g, ftp xfer with trailing /)
1338: */
1339: static int
1.52 lukem 1340: fetch_ftp(url)
1.42 lukem 1341: const char *url;
1342: {
1343: char *cp, *xargv[5], rempath[MAXPATHLEN];
1344: char *host, *path, *dir, *file, *user, *pass;
1.60 itojun 1345: char *port;
1.82 lukem 1346: int dirhasglob, filehasglob, oautologin, rval, type, xargc;
1347: in_port_t portnum;
1348: url_t urltype;
1.42 lukem 1349:
1350: host = path = dir = file = user = pass = NULL;
1.60 itojun 1351: port = NULL;
1.42 lukem 1352: rval = 1;
1.53 lukem 1353: type = TYPE_I;
1.42 lukem 1354:
1355: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1356: if ((parse_url(url, "URL", &urltype, &user, &pass,
1.82 lukem 1357: &host, &port, &portnum, &path) == -1) ||
1.42 lukem 1358: (user != NULL && *user == '\0') ||
1359: (pass != NULL && *pass == '\0') ||
1360: EMPTYSTRING(host)) {
1361: warnx("Invalid URL `%s'", url);
1362: goto cleanup_fetch_ftp;
1363: }
1.50 lukem 1364: url_decode(user);
1365: url_decode(pass);
1.53 lukem 1366: /*
1367: * Note: Don't url_decode(path) here. We need to keep the
1368: * distinction between "/" and "%2F" until later.
1369: */
1370:
1371: /* check for trailing ';type=[aid]' */
1.63 lukem 1372: if (! EMPTYSTRING(path) && (cp = strrchr(path, ';')) != NULL) {
1.53 lukem 1373: if (strcasecmp(cp, ";type=a") == 0)
1374: type = TYPE_A;
1375: else if (strcasecmp(cp, ";type=i") == 0)
1376: type = TYPE_I;
1377: else if (strcasecmp(cp, ";type=d") == 0) {
1378: warnx(
1379: "Directory listing via a URL is not supported");
1380: goto cleanup_fetch_ftp;
1381: } else {
1382: warnx("Invalid suffix `%s' in URL `%s'", cp,
1383: url);
1384: goto cleanup_fetch_ftp;
1385: }
1386: *cp = 0;
1387: }
1.97 lukem 1388: } else { /* classic style `[user@]host:[file]' */
1.53 lukem 1389: urltype = CLASSIC_URL_T;
1.42 lukem 1390: host = xstrdup(url);
1.97 lukem 1391: cp = strchr(host, '@');
1392: if (cp != NULL) {
1393: *cp = '\0';
1394: user = host;
1395: anonftp = 0; /* disable anonftp */
1396: host = xstrdup(cp + 1);
1397: }
1.42 lukem 1398: cp = strchr(host, ':');
1399: if (cp != NULL) {
1400: *cp = '\0';
1401: path = xstrdup(cp + 1);
1402: }
1403: }
1404: if (EMPTYSTRING(host))
1405: goto cleanup_fetch_ftp;
1406:
1.50 lukem 1407: /* Extract the file and (if present) directory name. */
1.42 lukem 1408: dir = path;
1409: if (! EMPTYSTRING(dir)) {
1.53 lukem 1410: /*
1.97 lukem 1411: * If we are dealing with classic `[user@]host:[path]' syntax,
1412: * then a path of the form `/file' (resulting from input of the
1413: * form `host:/file') means that we should do "CWD /" before
1414: * retrieving the file. So we set dir="/" and file="file".
1.53 lukem 1415: *
1.97 lukem 1416: * But if we are dealing with URLs like `ftp://host/path' then
1417: * a path of the form `/file' (resulting from a URL of the form
1418: * `ftp://host//file') means that we should do `CWD ' (with an
1419: * empty argument) before retrieving the file. So we set
1.53 lukem 1420: * dir="" and file="file".
1421: *
1.97 lukem 1422: * If the path does not contain / at all, we set dir=NULL.
1423: * (We get a path without any slashes if we are dealing with
1424: * classic `[user@]host:[file]' or URL `ftp://host/file'.)
1.53 lukem 1425: *
1.97 lukem 1426: * In all other cases, we set dir to a string that does not
1427: * include the final '/' that separates the dir part from the
1428: * file part of the path. (This will be the empty string if
1429: * and only if we are dealing with a path of the form `/file'
1430: * resulting from an URL of the form `ftp://host//file'.)
1.53 lukem 1431: */
1.42 lukem 1432: cp = strrchr(dir, '/');
1.53 lukem 1433: if (cp == dir && urltype == CLASSIC_URL_T) {
1.50 lukem 1434: file = cp + 1;
1435: dir = "/";
1436: } else if (cp != NULL) {
1.42 lukem 1437: *cp++ = '\0';
1438: file = cp;
1439: } else {
1440: file = dir;
1441: dir = NULL;
1442: }
1.63 lukem 1443: } else
1444: dir = NULL;
1.53 lukem 1445: if (urltype == FTP_URL_T && file != NULL) {
1446: url_decode(file);
1447: /* but still don't url_decode(dir) */
1448: }
1.42 lukem 1449: if (debug)
1450: fprintf(ttyout,
1.60 itojun 1451: "fetch_ftp: user `%s' pass `%s' host %s:%s path `%s' dir `%s' file `%s'\n",
1.53 lukem 1452: user ? user : "<null>", pass ? pass : "<null>",
1.60 itojun 1453: host ? host : "<null>", port ? port : "<null>",
1454: path ? path : "<null>",
1.53 lukem 1455: dir ? dir : "<null>", file ? file : "<null>");
1.42 lukem 1456:
1457: dirhasglob = filehasglob = 0;
1.53 lukem 1458: if (doglob && urltype == CLASSIC_URL_T) {
1.42 lukem 1459: if (! EMPTYSTRING(dir) && strpbrk(dir, "*?[]{}") != NULL)
1460: dirhasglob = 1;
1461: if (! EMPTYSTRING(file) && strpbrk(file, "*?[]{}") != NULL)
1462: filehasglob = 1;
1463: }
1464:
1.50 lukem 1465: /* Set up the connection */
1466: if (connected)
1467: disconnect(0, NULL);
1468: xargv[0] = __progname;
1469: xargv[1] = host;
1470: xargv[2] = NULL;
1471: xargc = 2;
1472: if (port) {
1.60 itojun 1473: xargv[2] = port;
1.50 lukem 1474: xargv[3] = NULL;
1475: xargc = 3;
1476: }
1477: oautologin = autologin;
1478: if (user != NULL)
1479: autologin = 0;
1480: setpeer(xargc, xargv);
1481: autologin = oautologin;
1482: if ((connected == 0) || ((connected == 1)
1483: && !ftp_login(host, user, pass))) {
1484: warnx("Can't connect or login to host `%s'", host);
1485: goto cleanup_fetch_ftp;
1486: }
1.42 lukem 1487:
1.53 lukem 1488: switch (type) {
1489: case TYPE_A:
1490: setascii(0, NULL);
1491: break;
1492: case TYPE_I:
1493: setbinary(0, NULL);
1494: break;
1495: default:
1.91 lukem 1496: errx(1, "fetch_ftp: unknown transfer type %d", type);
1.53 lukem 1497: }
1498:
1.63 lukem 1499: /*
1500: * Change directories, if necessary.
1501: *
1502: * Note: don't use EMPTYSTRING(dir) below, because
1503: * dir=="" means something different from dir==NULL.
1504: */
1.53 lukem 1505: if (dir != NULL && !dirhasglob) {
1506: char *nextpart;
1.42 lukem 1507:
1.53 lukem 1508: /*
1.97 lukem 1509: * If we are dealing with a classic `[user@]host:[path]'
1510: * (urltype is CLASSIC_URL_T) then we have a raw directory
1.53 lukem 1511: * name (not encoded in any way) and we can change
1512: * directories in one step.
1513: *
1514: * If we are dealing with an `ftp://host/path' URL
1515: * (urltype is FTP_URL_T), then RFC 1738 says we need to
1516: * send a separate CWD command for each unescaped "/"
1517: * in the path, and we have to interpret %hex escaping
1518: * *after* we find the slashes. It's possible to get
1519: * empty components here, (from multiple adjacent
1520: * slashes in the path) and RFC 1738 says that we should
1521: * still do `CWD ' (with a null argument) in such cases.
1522: *
1.63 lukem 1523: * Many ftp servers don't support `CWD ', so if there's an
1524: * error performing that command, bail out with a descriptive
1525: * message.
1.53 lukem 1526: *
1527: * Examples:
1528: *
1.63 lukem 1529: * host: dir="", urltype=CLASSIC_URL_T
1530: * logged in (to default directory)
1.53 lukem 1531: * host:file dir=NULL, urltype=CLASSIC_URL_T
1532: * "RETR file"
1.63 lukem 1533: * host:dir/ dir="dir", urltype=CLASSIC_URL_T
1534: * "CWD dir", logged in
1535: * ftp://host/ dir="", urltype=FTP_URL_T
1536: * logged in (to default directory)
1537: * ftp://host/dir/ dir="dir", urltype=FTP_URL_T
1538: * "CWD dir", logged in
1.53 lukem 1539: * ftp://host/file dir=NULL, urltype=FTP_URL_T
1540: * "RETR file"
1541: * ftp://host//file dir="", urltype=FTP_URL_T
1.63 lukem 1542: * "CWD ", "RETR file"
1.53 lukem 1543: * host:/file dir="/", urltype=CLASSIC_URL_T
1544: * "CWD /", "RETR file"
1545: * ftp://host///file dir="/", urltype=FTP_URL_T
1.63 lukem 1546: * "CWD ", "CWD ", "RETR file"
1.53 lukem 1547: * ftp://host/%2F/file dir="%2F", urltype=FTP_URL_T
1548: * "CWD /", "RETR file"
1549: * ftp://host/foo/file dir="foo", urltype=FTP_URL_T
1550: * "CWD foo", "RETR file"
1551: * ftp://host/foo/bar/file dir="foo/bar"
1552: * "CWD foo", "CWD bar", "RETR file"
1553: * ftp://host//foo/bar/file dir="/foo/bar"
1.63 lukem 1554: * "CWD ", "CWD foo", "CWD bar", "RETR file"
1.53 lukem 1555: * ftp://host/foo//bar/file dir="foo//bar"
1.63 lukem 1556: * "CWD foo", "CWD ", "CWD bar", "RETR file"
1.53 lukem 1557: * ftp://host/%2F/foo/bar/file dir="%2F/foo/bar"
1558: * "CWD /", "CWD foo", "CWD bar", "RETR file"
1559: * ftp://host/%2Ffoo/bar/file dir="%2Ffoo/bar"
1560: * "CWD /foo", "CWD bar", "RETR file"
1561: * ftp://host/%2Ffoo%2Fbar/file dir="%2Ffoo%2Fbar"
1562: * "CWD /foo/bar", "RETR file"
1563: * ftp://host/%2Ffoo%2Fbar%2Ffile dir=NULL
1564: * "RETR /foo/bar/file"
1565: *
1566: * Note that we don't need `dir' after this point.
1567: */
1568: do {
1569: if (urltype == FTP_URL_T) {
1570: nextpart = strchr(dir, '/');
1571: if (nextpart) {
1572: *nextpart = '\0';
1573: nextpart++;
1574: }
1575: url_decode(dir);
1576: } else
1577: nextpart = NULL;
1578: if (debug)
1579: fprintf(ttyout, "dir `%s', nextpart `%s'\n",
1580: dir ? dir : "<null>",
1581: nextpart ? nextpart : "<null>");
1.63 lukem 1582: if (urltype == FTP_URL_T || *dir != '\0') {
1.53 lukem 1583: xargv[0] = "cd";
1584: xargv[1] = dir;
1585: xargv[2] = NULL;
1586: dirchange = 0;
1587: cd(2, xargv);
1.63 lukem 1588: if (! dirchange) {
1589: if (*dir == '\0' && code == 500)
1590: fprintf(stderr,
1591: "\n"
1592: "ftp: The `CWD ' command (without a directory), which is required by\n"
1593: " RFC 1738 to support the empty directory in the URL pathname (`//'),\n"
1594: " conflicts with the server's conformance to RFC 959.\n"
1595: " Try the same URL without the `//' in the URL pathname.\n"
1596: "\n");
1.53 lukem 1597: goto cleanup_fetch_ftp;
1.63 lukem 1598: }
1.53 lukem 1599: }
1600: dir = nextpart;
1601: } while (dir != NULL);
1.42 lukem 1602: }
1603:
1604: if (EMPTYSTRING(file)) {
1605: rval = -1;
1606: goto cleanup_fetch_ftp;
1607: }
1608:
1609: if (dirhasglob) {
1.78 lukem 1610: (void)strlcpy(rempath, dir, sizeof(rempath));
1611: (void)strlcat(rempath, "/", sizeof(rempath));
1612: (void)strlcat(rempath, file, sizeof(rempath));
1.42 lukem 1613: file = rempath;
1614: }
1615:
1616: /* Fetch the file(s). */
1617: xargc = 2;
1618: xargv[0] = "get";
1619: xargv[1] = file;
1620: xargv[2] = NULL;
1621: if (dirhasglob || filehasglob) {
1622: int ointeractive;
1623:
1624: ointeractive = interactive;
1625: interactive = 0;
1626: xargv[0] = "mget";
1627: mget(xargc, xargv);
1628: interactive = ointeractive;
1629: } else {
1.53 lukem 1630: if (outfile == NULL) {
1631: cp = strrchr(file, '/'); /* find savefile */
1632: if (cp != NULL)
1633: outfile = cp + 1;
1634: else
1635: outfile = file;
1.42 lukem 1636: }
1.53 lukem 1637: xargv[2] = (char *)outfile;
1638: xargv[3] = NULL;
1639: xargc++;
1.52 lukem 1640: if (restartautofetch)
1641: reget(xargc, xargv);
1642: else
1643: get(xargc, xargv);
1.42 lukem 1644: }
1645:
1646: if ((code / 100) == COMPLETE)
1647: rval = 0;
1648:
1649: cleanup_fetch_ftp:
1650: FREEPTR(host);
1651: FREEPTR(path);
1652: FREEPTR(user);
1653: FREEPTR(pass);
1654: return (rval);
1655: }
1656:
1657: /*
1658: * Retrieve the given file to outfile.
1659: * Supports arguments of the form:
1660: * "host:path", "ftp://host/path" if $ftpproxy, call fetch_url() else
1661: * call fetch_ftp()
1.50 lukem 1662: * "http://host/path" call fetch_url() to use HTTP
1.42 lukem 1663: * "file:///path" call fetch_url() to copy
1664: * "about:..." print a message
1665: *
1666: * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
1667: * is still open (e.g, ftp xfer with trailing /)
1668: */
1669: static int
1.52 lukem 1670: go_fetch(url)
1.42 lukem 1671: const char *url;
1672: {
1.91 lukem 1673: char *proxy;
1.42 lukem 1674:
1675: /*
1676: * Check for about:*
1677: */
1678: if (strncasecmp(url, ABOUT_URL, sizeof(ABOUT_URL) - 1) == 0) {
1679: url += sizeof(ABOUT_URL) -1;
1680: if (strcasecmp(url, "ftp") == 0) {
1.87 lukem 1681: fputs(
1682: "This version of ftp has been enhanced by Luke Mewburn <lukem@netbsd.org>\n"
1683: "for the NetBSD project. Execute `man ftp' for more details.\n", ttyout);
1684: } else if (strcasecmp(url, "lukem") == 0) {
1685: fputs(
1686: "Luke Mewburn is the author of most of the enhancements in this ftp client.\n"
1687: "Please email feedback to <lukem@netbsd.org>.\n", ttyout);
1.42 lukem 1688: } else if (strcasecmp(url, "netbsd") == 0) {
1.87 lukem 1689: fputs(
1690: "NetBSD is a freely available and redistributable UNIX-like operating system.\n"
1691: "For more information, see http://www.netbsd.org/index.html\n", ttyout);
1.92 lukem 1692: } else if (strcasecmp(url, "version") == 0) {
1.94 lukem 1693: fprintf(ttyout, "Version: %s %s\n",
1694: FTP_PRODUCT, FTP_VERSION);
1.42 lukem 1695: } else {
1696: fprintf(ttyout, "`%s' is an interesting topic.\n", url);
1697: }
1.92 lukem 1698: fputs("\n", ttyout);
1.42 lukem 1699: return (0);
1700: }
1701:
1702: /*
1703: * Check for file:// and http:// URLs.
1704: */
1705: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1706: strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0)
1.52 lukem 1707: return (fetch_url(url, NULL, NULL, NULL));
1.42 lukem 1708:
1709: /*
1710: * Try FTP URL-style and host:file arguments next.
1711: * If ftpproxy is set with an FTP URL, use fetch_url()
1712: * Othewise, use fetch_ftp().
1713: */
1.91 lukem 1714: proxy = getoptionvalue("ftp_proxy");
1715: if (!EMPTYSTRING(proxy) &&
1716: strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0)
1.52 lukem 1717: return (fetch_url(url, NULL, NULL, NULL));
1.42 lukem 1718:
1.52 lukem 1719: return (fetch_ftp(url));
1.42 lukem 1720: }
1721:
1722: /*
1723: * Retrieve multiple files from the command line,
1724: * calling go_fetch() for each file.
1725: *
1726: * If an ftp path has a trailing "/", the path will be cd-ed into and
1.41 lukem 1727: * the connection remains open, and the function will return -1
1728: * (to indicate the connection is alive).
1.1 lukem 1729: * If an error occurs the return value will be the offset+1 in
1730: * argv[] of the file that caused a problem (i.e, argv[x]
1731: * returns x+1)
1732: * Otherwise, 0 is returned if all files retrieved successfully.
1733: */
1734: int
1.52 lukem 1735: auto_fetch(argc, argv)
1.1 lukem 1736: int argc;
1737: char *argv[];
1738: {
1.42 lukem 1739: volatile int argpos;
1740: int rval;
1.22 lukem 1741:
1.2 lukem 1742: argpos = 0;
1.1 lukem 1743:
1.88 lukem 1744: if (sigsetjmp(toplevel, 1)) {
1.2 lukem 1745: if (connected)
1746: disconnect(0, NULL);
1.3 lukem 1747: return (argpos + 1);
1.2 lukem 1748: }
1.88 lukem 1749: (void)xsignal(SIGINT, intr);
1.91 lukem 1750: (void)xsignal(SIGPIPE, lostpeer);
1.1 lukem 1751:
1752: /*
1753: * Loop through as long as there's files to fetch.
1754: */
1.27 lukem 1755: for (rval = 0; (rval == 0) && (argpos < argc); argpos++) {
1.1 lukem 1756: if (strchr(argv[argpos], ':') == NULL)
1757: break;
1.42 lukem 1758: redirect_loop = 0;
1.90 lukem 1759: if (!anonftp)
1760: anonftp = 2; /* Handle "automatic" transfers. */
1.52 lukem 1761: rval = go_fetch(argv[argpos]);
1762: if (outfile != NULL && strcmp(outfile, "-") != 0
1763: && outfile[0] != '|')
1764: outfile = NULL;
1.42 lukem 1765: if (rval > 0)
1.1 lukem 1766: rval = argpos + 1;
1.42 lukem 1767: }
1.3 lukem 1768:
1.1 lukem 1769: if (connected && rval != -1)
1770: disconnect(0, NULL);
1771: return (rval);
1772: }
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