Annotation of src/usr.bin/ftp/fetch.c, Revision 1.195
1.195 ! jca 1: /* $OpenBSD: fetch.c,v 1.194 2020/02/22 01:00:07 jca Exp $ */
1.15 millert 2: /* $NetBSD: fetch.c,v 1.14 1997/08/18 10:20:20 lukem Exp $ */
1.1 millert 3:
4: /*-
5: * Copyright (c) 1997 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Jason Thorpe and Luke Mewburn.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.15 millert 23: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1 millert 25: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30: * POSSIBILITY OF SUCH DAMAGE.
31: */
32:
33: /*
34: * FTP User Program -- Command line file retrieval
35: */
36:
37: #include <sys/types.h>
38: #include <sys/socket.h>
1.22 deraadt 39: #include <sys/stat.h>
1.1 millert 40:
41: #include <netinet/in.h>
42:
43: #include <arpa/ftp.h>
44: #include <arpa/inet.h>
45:
46: #include <ctype.h>
47: #include <err.h>
1.17 millert 48: #include <libgen.h>
1.1 millert 49: #include <netdb.h>
50: #include <fcntl.h>
1.3 millert 51: #include <signal.h>
1.175 deraadt 52: #include <vis.h>
1.1 millert 53: #include <stdio.h>
1.61 deraadt 54: #include <stdarg.h>
1.19 deraadt 55: #include <errno.h>
1.1 millert 56: #include <stdlib.h>
57: #include <string.h>
58: #include <unistd.h>
1.40 fgsch 59: #include <util.h>
1.73 drahn 60: #include <resolv.h>
1.1 millert 61:
1.154 deraadt 62: #ifndef NOSSL
1.134 jsing 63: #include <tls.h>
1.154 deraadt 64: #else /* !NOSSL */
1.134 jsing 65: struct tls;
1.154 deraadt 66: #endif /* !NOSSL */
1.61 deraadt 67:
1.1 millert 68: #include "ftp_var.h"
1.86 martynas 69: #include "cmds.h"
1.1 millert 70:
1.186 jca 71: static int file_get(const char *, const char *);
1.157 deraadt 72: static int url_get(const char *, const char *, const char *, int);
1.178 jca 73: static int save_chunked(FILE *, struct tls *, int , char *, size_t);
1.177 jca 74: static void aborthttp(int);
75: static void abortfile(int);
76: static char hextochar(const char *);
77: static char *urldecode(const char *);
78: static char *recode_credentials(const char *_userinfo);
79: static char *ftp_readline(FILE *, size_t *);
1.189 jca 80: static void ftp_close(FILE **, struct tls **, int *);
1.177 jca 81: static const char *sockerror(struct tls *);
1.184 jca 82: #ifdef SMALL
83: #define ftp_printf(fp, ...) fprintf(fp, __VA_ARGS__)
84: #else
85: static int ftp_printf(FILE *, const char *, ...);
86: #endif /* SMALL */
1.158 jca 87: #ifndef NOSSL
1.177 jca 88: static int proxy_connect(int, char *, char *);
89: static int stdio_tls_write_wrapper(void *, const char *, int);
90: static int stdio_tls_read_wrapper(void *, char *, int);
1.158 jca 91: #endif /* !NOSSL */
1.14 millert 92:
1.1 millert 93: #define FTP_URL "ftp://" /* ftp URL prefix */
94: #define HTTP_URL "http://" /* http URL prefix */
1.61 deraadt 95: #define HTTPS_URL "https://" /* https URL prefix */
1.22 deraadt 96: #define FILE_URL "file:" /* file URL prefix */
1.6 millert 97: #define FTP_PROXY "ftp_proxy" /* env var with ftp proxy location */
1.1 millert 98: #define HTTP_PROXY "http_proxy" /* env var with http proxy location */
99:
100: #define EMPTYSTRING(x) ((x) == NULL || (*(x) == '\0'))
101:
1.110 guenther 102: static const char at_encoding_warning[] =
1.53 deraadt 103: "Extra `@' characters in usernames and passwords should be encoded as %%40";
1.37 heko 104:
1.177 jca 105: static jmp_buf httpabort;
1.1 millert 106:
1.54 fgsch 107: static int redirect_loop;
1.171 jca 108: static int retried;
1.54 fgsch 109:
1.1 millert 110: /*
1.95 martynas 111: * Determine whether the character needs encoding, per RFC1738:
1.160 krw 112: * - No corresponding graphic US-ASCII.
113: * - Unsafe characters.
1.95 martynas 114: */
115: static int
1.138 jca 116: unsafe_char(const char *c0)
1.95 martynas 117: {
118: const char *unsafe_chars = " <>\"#{}|\\^~[]`";
1.138 jca 119: const unsigned char *c = (const unsigned char *)c0;
1.95 martynas 120:
121: /*
122: * No corresponding graphic US-ASCII.
123: * Control characters and octets not used in US-ASCII.
124: */
125: return (iscntrl(*c) || !isascii(*c) ||
126:
127: /*
128: * Unsafe characters.
129: * '%' is also unsafe, if is not followed by two
130: * hexadecimal digits.
131: */
132: strchr(unsafe_chars, *c) != NULL ||
133: (*c == '%' && (!isxdigit(*++c) || !isxdigit(*++c))));
134: }
135:
136: /*
137: * Encode given URL, per RFC1738.
138: * Allocate and return string to the caller.
139: */
140: static char *
141: url_encode(const char *path)
142: {
143: size_t i, length, new_length;
144: char *epath, *epathp;
145:
146: length = new_length = strlen(path);
147:
148: /*
149: * First pass:
150: * Count unsafe characters, and determine length of the
151: * final URL.
152: */
153: for (i = 0; i < length; i++)
154: if (unsafe_char(path + i))
155: new_length += 2;
156:
157: epath = epathp = malloc(new_length + 1); /* One more for '\0'. */
158: if (epath == NULL)
1.102 halex 159: err(1, "Can't allocate memory for URL encoding");
1.95 martynas 160:
161: /*
162: * Second pass:
163: * Encode, and copy final URL.
164: */
165: for (i = 0; i < length; i++)
166: if (unsafe_char(path + i)) {
1.138 jca 167: snprintf(epathp, 4, "%%" "%02x",
168: (unsigned char)path[i]);
1.95 martynas 169: epathp += 3;
170: } else
171: *(epathp++) = path[i];
172:
173: *epathp = '\0';
174: return (epath);
175: }
176:
1.155 deraadt 177: /* ARGSUSED */
178: static void
179: tooslow(int signo)
180: {
181: dprintf(STDERR_FILENO, "%s: connect taking too long\n", __progname);
182: _exit(2);
183: }
184:
1.95 martynas 185: /*
1.186 jca 186: * Copy a local file (used by the OpenBSD installer).
187: * Returns -1 on failure, 0 on success
188: */
189: static int
190: file_get(const char *path, const char *outfile)
191: {
192: struct stat st;
1.195 ! jca 193: int fd, out = -1, rval = -1, save_errno;
1.186 jca 194: volatile sig_t oldintr, oldinti;
195: const char *savefile;
196: char *buf = NULL, *cp;
197: const size_t buflen = 128 * 1024;
198: off_t hashbytes;
199: ssize_t len, wlen;
200:
201: direction = "received";
202:
203: fd = open(path, O_RDONLY);
204: if (fd == -1) {
205: warn("Can't open file %s", path);
206: return -1;
207: }
208:
209: if (fstat(fd, &st) == -1)
210: filesize = -1;
211: else
212: filesize = st.st_size;
213:
214: if (outfile != NULL)
215: savefile = outfile;
216: else {
217: if (path[strlen(path) - 1] == '/') /* Consider no file */
218: savefile = NULL; /* after dir invalid. */
219: else
220: savefile = basename(path);
221: }
222:
223: if (EMPTYSTRING(savefile)) {
224: warnx("No filename after directory (use -o): %s", path);
225: goto cleanup_copy;
226: }
227:
228: /* Open the output file. */
229: if (!pipeout) {
230: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC, 0666);
231: if (out == -1) {
232: warn("Can't open %s", savefile);
233: goto cleanup_copy;
234: }
235: } else
236: out = fileno(stdout);
237:
238: if ((buf = malloc(buflen)) == NULL)
239: errx(1, "Can't allocate memory for transfer buffer");
240:
241: /* Trap signals */
242: oldintr = NULL;
243: oldinti = NULL;
244: if (setjmp(httpabort)) {
245: if (oldintr)
246: (void)signal(SIGINT, oldintr);
247: if (oldinti)
248: (void)signal(SIGINFO, oldinti);
249: goto cleanup_copy;
250: }
251: oldintr = signal(SIGINT, abortfile);
252:
253: bytes = 0;
254: hashbytes = mark;
255: progressmeter(-1, path);
256:
257: /* Finally, suck down the file. */
258: oldinti = signal(SIGINFO, psummary);
259: while ((len = read(fd, buf, buflen)) > 0) {
260: bytes += len;
261: for (cp = buf; len > 0; len -= wlen, cp += wlen) {
262: if ((wlen = write(out, cp, len)) == -1) {
263: warn("Writing %s", savefile);
264: signal(SIGINFO, oldinti);
265: goto cleanup_copy;
266: }
267: }
268: if (hash && !progress) {
269: while (bytes >= hashbytes) {
270: (void)putc('#', ttyout);
271: hashbytes += mark;
272: }
273: (void)fflush(ttyout);
274: }
275: }
276: save_errno = errno;
277: signal(SIGINFO, oldinti);
278: if (hash && !progress && bytes > 0) {
279: if (bytes < mark)
280: (void)putc('#', ttyout);
281: (void)putc('\n', ttyout);
282: (void)fflush(ttyout);
283: }
284: if (len == -1) {
285: warnc(save_errno, "Reading from file");
286: goto cleanup_copy;
287: }
288: progressmeter(1, NULL);
289: if (verbose)
290: ptransfer(0);
291: (void)signal(SIGINT, oldintr);
292:
293: rval = 0;
294:
295: cleanup_copy:
296: free(buf);
297: if (out >= 0 && out != fileno(stdout))
298: close(out);
299: close(fd);
300:
301: return rval;
302: }
303:
304: /*
1.6 millert 305: * Retrieve URL, via the proxy in $proxyvar if necessary.
1.1 millert 306: * Returns -1 on failure, 0 on success
307: */
1.14 millert 308: static int
1.157 deraadt 309: url_get(const char *origline, const char *proxyenv, const char *outfile, int lastfile)
1.1 millert 310: {
1.69 jsg 311: char pbuf[NI_MAXSERV], hbuf[NI_MAXHOST], *cp, *portnum, *path, ststr[4];
1.62 ray 312: char *hosttail, *cause = "unknown", *newline, *host, *port, *buf = NULL;
1.175 deraadt 313: char *epath, *redirurl, *loctail, *h, *p, gerror[200];
1.189 jca 314: int error, isftpurl = 0, isredirect = 0, rval = -1;
1.172 jca 315: int isunavail = 0, retryafter = -1;
1.152 krw 316: struct addrinfo hints, *res0, *res;
1.189 jca 317: const char *savefile;
318: char *proxyurl = NULL;
1.190 yasuoka 319: char *credentials = NULL, *proxy_credentials = NULL;
1.189 jca 320: int fd = -1, out = -1;
1.97 martynas 321: volatile sig_t oldintr, oldinti;
1.53 deraadt 322: FILE *fin = NULL;
1.1 millert 323: off_t hashbytes;
1.58 grunk 324: const char *errstr;
1.114 tedu 325: ssize_t len, wlen;
1.136 bluhm 326: char *proxyhost = NULL;
1.154 deraadt 327: #ifndef NOSSL
1.61 deraadt 328: char *sslpath = NULL, *sslhost = NULL;
1.193 jca 329: int ishttpsurl = 0;
1.159 krw 330: #endif /* !NOSSL */
331: #ifndef SMALL
1.181 jca 332: char *full_host = NULL;
333: const char *scheme;
1.159 krw 334: char *locbase;
1.152 krw 335: struct addrinfo *ares = NULL;
1.181 jca 336: #endif /* !SMALL */
1.134 jsing 337: struct tls *tls = NULL;
1.70 deraadt 338: int status;
1.105 haesbaer 339: int save_errno;
1.113 tedu 340: const size_t buflen = 128 * 1024;
1.178 jca 341: int chunked = 0;
1.14 millert 342:
1.97 martynas 343: direction = "received";
344:
1.62 ray 345: newline = strdup(origline);
346: if (newline == NULL)
1.14 millert 347: errx(1, "Can't allocate memory to parse URL");
1.102 halex 348: if (strncasecmp(newline, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
1.62 ray 349: host = newline + sizeof(HTTP_URL) - 1;
1.102 halex 350: #ifndef SMALL
351: scheme = HTTP_URL;
352: #endif /* !SMALL */
353: } else if (strncasecmp(newline, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.62 ray 354: host = newline + sizeof(FTP_URL) - 1;
1.14 millert 355: isftpurl = 1;
1.102 halex 356: #ifndef SMALL
357: scheme = FTP_URL;
358: #endif /* !SMALL */
1.183 jca 359: } else if (strncasecmp(newline, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0) {
1.154 deraadt 360: #ifndef NOSSL
1.62 ray 361: host = newline + sizeof(HTTPS_URL) - 1;
1.61 deraadt 362: ishttpsurl = 1;
1.183 jca 363: #else
364: errx(1, "%s: No HTTPS support", newline);
365: #endif /* !NOSSL */
1.181 jca 366: #ifndef SMALL
1.102 halex 367: scheme = HTTPS_URL;
1.181 jca 368: #endif /* !SMALL */
1.14 millert 369: } else
1.186 jca 370: errx(1, "%s: URL not permitted", newline);
1.6 millert 371:
1.186 jca 372: path = strchr(host, '/'); /* Find path */
1.191 jca 373:
374: /*
375: * Look for auth header in host.
376: * Basic auth from RFC 2617, valid characters for path are in
377: * RFC 3986 section 3.3.
378: */
1.193 jca 379: if (!isftpurl) {
1.191 jca 380: p = strchr(host, '@');
381: if (p != NULL && (path == NULL || p < path)) {
382: *p++ = '\0';
383: credentials = recode_credentials(host);
384:
385: /* Overwrite userinfo */
386: memmove(host, p, strlen(p) + 1);
387: path = strchr(host, '/');
388: }
389: }
390:
1.186 jca 391: if (EMPTYSTRING(path)) {
392: if (outfile) { /* No slash, but */
393: path = strchr(host,'\0'); /* we have outfile. */
394: goto noslash;
1.22 deraadt 395: }
1.186 jca 396: if (isftpurl)
397: goto noftpautologin;
398: warnx("No `/' after host (use -o): %s", origline);
399: goto cleanup_url_get;
400: }
401: *path++ = '\0';
402: if (EMPTYSTRING(path) && !outfile) {
403: if (isftpurl)
404: goto noftpautologin;
405: warnx("No filename after host (use -o): %s", origline);
406: goto cleanup_url_get;
1.14 millert 407: }
1.1 millert 408:
1.93 martynas 409: noslash:
1.17 millert 410: if (outfile)
411: savefile = outfile;
1.93 martynas 412: else {
413: if (path[strlen(path) - 1] == '/') /* Consider no file */
414: savefile = NULL; /* after dir invalid. */
415: else
416: savefile = basename(path);
1.75 martynas 417: }
418:
1.14 millert 419: if (EMPTYSTRING(savefile)) {
420: if (isftpurl)
421: goto noftpautologin;
1.94 martynas 422: warnx("No filename after directory (use -o): %s", origline);
1.6 millert 423: goto cleanup_url_get;
1.14 millert 424: }
1.1 millert 425:
1.93 martynas 426: #ifndef SMALL
1.100 halex 427: if (resume && pipeout) {
1.93 martynas 428: warnx("can't append to stdout");
429: goto cleanup_url_get;
430: }
431: #endif /* !SMALL */
432:
1.186 jca 433: if (proxyenv != NULL) { /* use proxy */
1.154 deraadt 434: #ifndef NOSSL
1.61 deraadt 435: if (ishttpsurl) {
436: sslpath = strdup(path);
437: sslhost = strdup(host);
438: if (! sslpath || ! sslhost)
439: errx(1, "Can't allocate memory for https path/host.");
440: }
1.154 deraadt 441: #endif /* !NOSSL */
1.136 bluhm 442: proxyhost = strdup(host);
443: if (proxyhost == NULL)
444: errx(1, "Can't allocate memory for proxy host.");
1.62 ray 445: proxyurl = strdup(proxyenv);
446: if (proxyurl == NULL)
1.14 millert 447: errx(1, "Can't allocate memory for proxy URL.");
1.62 ray 448: if (strncasecmp(proxyurl, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
449: host = proxyurl + sizeof(HTTP_URL) - 1;
450: else if (strncasecmp(proxyurl, FTP_URL, sizeof(FTP_URL) - 1) == 0)
451: host = proxyurl + sizeof(FTP_URL) - 1;
1.6 millert 452: else {
1.14 millert 453: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 454: goto cleanup_url_get;
455: }
1.14 millert 456: if (EMPTYSTRING(host)) {
457: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 458: goto cleanup_url_get;
1.14 millert 459: }
1.93 martynas 460: if (*--path == '\0')
461: *path = '/'; /* add / back to real path */
1.1 millert 462: path = strchr(host, '/'); /* remove trailing / on host */
1.42 deraadt 463: if (!EMPTYSTRING(path))
1.73 drahn 464: *path++ = '\0'; /* i guess this ++ is useless */
465:
466: path = strchr(host, '@'); /* look for credentials in proxy */
467: if (!EMPTYSTRING(path)) {
1.81 espie 468: *path = '\0';
1.123 guenther 469: if (strchr(host, ':') == NULL) {
1.73 drahn 470: warnx("Malformed proxy URL: %s", proxyenv);
471: goto cleanup_url_get;
472: }
1.190 yasuoka 473: proxy_credentials = recode_credentials(host);
1.81 espie 474: *path = '@'; /* restore @ in proxyurl */
1.123 guenther 475:
1.73 drahn 476: /*
1.81 espie 477: * This removes the password from proxyurl,
1.73 drahn 478: * filling with stars
479: */
1.81 espie 480: for (host = 1 + strchr(proxyurl + 5, ':'); *host != '@';
1.179 deraadt 481: host++)
1.73 drahn 482: *host = '*';
483:
1.81 espie 484: host = path + 1;
1.73 drahn 485: }
1.123 guenther 486:
1.62 ray 487: path = newline;
1.1 millert 488: }
489:
1.28 itojun 490: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
491: (hosttail[1] == '\0' || hosttail[1] == ':')) {
492: host++;
493: *hosttail++ = '\0';
1.102 halex 494: #ifndef SMALL
495: if (asprintf(&full_host, "[%s]", host) == -1)
496: errx(1, "Cannot allocate memory for hostname");
497: #endif /* !SMALL */
1.28 itojun 498: } else
499: hosttail = host;
500:
501: portnum = strrchr(hosttail, ':'); /* find portnum */
1.1 millert 502: if (portnum != NULL)
503: *portnum++ = '\0';
1.154 deraadt 504: #ifndef NOSSL
1.150 millert 505: port = portnum ? portnum : (ishttpsurl ? httpsport : httpport);
1.154 deraadt 506: #else /* !NOSSL */
1.150 millert 507: port = portnum ? portnum : httpport;
1.154 deraadt 508: #endif /* !NOSSL */
1.1 millert 509:
1.80 martynas 510: #ifndef SMALL
1.102 halex 511: if (full_host == NULL)
512: if ((full_host = strdup(host)) == NULL)
513: errx(1, "Cannot allocate memory for hostname");
1.1 millert 514: if (debug)
1.106 haesbaer 515: fprintf(ttyout, "host %s, port %s, path %s, "
1.150 millert 516: "save as %s, auth %s.\n", host, port, path,
517: savefile, credentials ? credentials : "none");
1.80 martynas 518: #endif /* !SMALL */
1.1 millert 519:
1.25 itojun 520: memset(&hints, 0, sizeof(hints));
1.39 deraadt 521: hints.ai_family = family;
1.25 itojun 522: hints.ai_socktype = SOCK_STREAM;
523: error = getaddrinfo(host, port, &hints, &res0);
1.61 deraadt 524: /*
525: * If the services file is corrupt/missing, fall back
526: * on our hard-coded defines.
527: */
1.30 deraadt 528: if (error == EAI_SERVICE && port == httpport) {
529: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
530: error = getaddrinfo(host, pbuf, &hints, &res0);
1.154 deraadt 531: #ifndef NOSSL
1.61 deraadt 532: } else if (error == EAI_SERVICE && port == httpsport) {
533: snprintf(pbuf, sizeof(pbuf), "%d", HTTPS_PORT);
534: error = getaddrinfo(host, pbuf, &hints, &res0);
1.154 deraadt 535: #endif /* !NOSSL */
1.30 deraadt 536: }
1.25 itojun 537: if (error) {
1.122 guenther 538: warnx("%s: %s", host, gai_strerror(error));
1.25 itojun 539: goto cleanup_url_get;
1.1 millert 540: }
541:
1.105 haesbaer 542: #ifndef SMALL
543: if (srcaddr) {
544: hints.ai_flags |= AI_NUMERICHOST;
545: error = getaddrinfo(srcaddr, NULL, &hints, &ares);
546: if (error) {
1.122 guenther 547: warnx("%s: %s", srcaddr, gai_strerror(error));
1.105 haesbaer 548: goto cleanup_url_get;
549: }
550: }
551: #endif /* !SMALL */
1.135 deraadt 552:
553: /* ensure consistent order of the output */
554: if (verbose)
555: setvbuf(ttyout, NULL, _IOLBF, 0);
1.105 haesbaer 556:
1.166 procter 557: fd = -1;
1.25 itojun 558: for (res = res0; res; res = res->ai_next) {
1.44 itojun 559: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
560: sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
561: strlcpy(hbuf, "(unknown)", sizeof(hbuf));
1.41 deraadt 562: if (verbose)
1.44 itojun 563: fprintf(ttyout, "Trying %s...\n", hbuf);
1.14 millert 564:
1.166 procter 565: fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
566: if (fd == -1) {
1.25 itojun 567: cause = "socket";
568: continue;
1.1 millert 569: }
570:
1.105 haesbaer 571: #ifndef SMALL
572: if (srcaddr) {
573: if (ares->ai_family != res->ai_family) {
1.166 procter 574: close(fd);
575: fd = -1;
1.105 haesbaer 576: errno = EINVAL;
577: cause = "bind";
578: continue;
579: }
1.170 deraadt 580: if (bind(fd, ares->ai_addr, ares->ai_addrlen) == -1) {
1.105 haesbaer 581: save_errno = errno;
1.166 procter 582: close(fd);
1.105 haesbaer 583: errno = save_errno;
1.166 procter 584: fd = -1;
1.105 haesbaer 585: cause = "bind";
586: continue;
587: }
588: }
589: #endif /* !SMALL */
590:
1.155 deraadt 591: if (connect_timeout) {
592: (void)signal(SIGALRM, tooslow);
593: alarmtimer(connect_timeout);
594: }
595:
1.166 procter 596: for (error = connect(fd, res->ai_addr, res->ai_addrlen);
597: error != 0 && errno == EINTR; error = connect_wait(fd))
1.149 millert 598: continue;
599: if (error != 0) {
1.57 otto 600: save_errno = errno;
1.166 procter 601: close(fd);
1.57 otto 602: errno = save_errno;
1.166 procter 603: fd = -1;
1.25 itojun 604: cause = "connect";
1.19 deraadt 605: continue;
606: }
1.25 itojun 607:
1.29 itojun 608: /* get port in numeric */
609: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
610: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
611: port = pbuf;
612: else
613: port = NULL;
614:
1.158 jca 615: #ifndef NOSSL
1.61 deraadt 616: if (proxyenv && sslhost)
1.190 yasuoka 617: proxy_connect(fd, sslhost, proxy_credentials);
1.158 jca 618: #endif /* !NOSSL */
1.25 itojun 619: break;
620: }
621: freeaddrinfo(res0);
1.105 haesbaer 622: #ifndef SMALL
623: if (srcaddr)
624: freeaddrinfo(ares);
625: #endif /* !SMALL */
1.166 procter 626: if (fd < 0) {
1.33 millert 627: warn("%s", cause);
1.6 millert 628: goto cleanup_url_get;
1.1 millert 629: }
630:
1.154 deraadt 631: #ifndef NOSSL
1.61 deraadt 632: if (ishttpsurl) {
1.187 beck 633: ssize_t ret;
1.61 deraadt 634: if (proxyenv && sslpath) {
635: ishttpsurl = 0;
1.62 ray 636: proxyurl = NULL;
1.61 deraadt 637: path = sslpath;
638: }
1.131 jca 639: if (sslhost == NULL) {
640: sslhost = strdup(host);
641: if (sslhost == NULL)
642: errx(1, "Can't allocate memory for https host.");
1.116 jca 643: }
1.134 jsing 644: if ((tls = tls_client()) == NULL) {
1.126 jsing 645: fprintf(ttyout, "failed to create SSL client\n");
1.61 deraadt 646: goto cleanup_url_get;
647: }
1.134 jsing 648: if (tls_configure(tls, tls_config) != 0) {
1.187 beck 649: fprintf(ttyout, "TLS configuration failure: %s\n",
1.134 jsing 650: tls_error(tls));
1.61 deraadt 651: goto cleanup_url_get;
1.117 jca 652: }
1.166 procter 653: if (tls_connect_socket(tls, fd, sslhost) != 0) {
1.187 beck 654: fprintf(ttyout, "TLS connect failure: %s\n", tls_error(tls));
1.72 ray 655: goto cleanup_url_get;
1.118 jca 656: }
1.187 beck 657: do {
658: ret = tls_handshake(tls);
659: } while (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT);
660: if (ret != 0) {
661: fprintf(ttyout, "TLS handshake failure: %s\n", tls_error(tls));
1.176 jca 662: goto cleanup_url_get;
663: }
664: fin = funopen(tls, stdio_tls_read_wrapper,
665: stdio_tls_write_wrapper, NULL, NULL);
1.61 deraadt 666: } else {
1.166 procter 667: fin = fdopen(fd, "r+");
668: fd = -1;
1.61 deraadt 669: }
1.154 deraadt 670: #else /* !NOSSL */
1.166 procter 671: fin = fdopen(fd, "r+");
672: fd = -1;
1.154 deraadt 673: #endif /* !NOSSL */
1.155 deraadt 674:
1.157 deraadt 675: #ifdef SMALL
676: if (lastfile) {
677: if (pipeout) {
678: if (pledge("stdio rpath inet dns tty", NULL) == -1)
679: err(1, "pledge");
680: } else {
681: if (pledge("stdio rpath wpath cpath inet dns tty", NULL) == -1)
682: err(1, "pledge");
683: }
684: }
685: #endif
686:
1.155 deraadt 687: if (connect_timeout) {
688: signal(SIGALRM, SIG_DFL);
689: alarmtimer(0);
690: }
1.40 fgsch 691:
1.1 millert 692: /*
1.40 fgsch 693: * Construct and send the request. Proxy requests don't want leading /.
1.1 millert 694: */
1.154 deraadt 695: #ifndef NOSSL
1.74 pyr 696: cookie_get(host, path, ishttpsurl, &buf);
1.154 deraadt 697: #endif /* !NOSSL */
1.95 martynas 698:
699: epath = url_encode(path);
1.62 ray 700: if (proxyurl) {
1.151 millert 701: if (verbose) {
702: fprintf(ttyout, "Requesting %s (via %s)\n",
703: origline, proxyurl);
704: }
1.32 itojun 705: /*
706: * Host: directive must use the destination host address for
1.136 bluhm 707: * the original URI (path).
1.32 itojun 708: */
1.190 yasuoka 709: ftp_printf(fin, "GET %s HTTP/1.1\r\n"
710: "Connection: close\r\n"
711: "Host: %s\r\n%s%s\r\n",
712: epath, proxyhost, buf ? buf : "", httpuseragent);
1.123 guenther 713: if (credentials)
1.190 yasuoka 714: ftp_printf(fin, "Authorization: Basic %s\r\n",
715: credentials);
716: if (proxy_credentials)
717: ftp_printf(fin, "Proxy-Authorization: Basic %s\r\n",
718: proxy_credentials);
719: ftp_printf(fin, "\r\n");
1.28 itojun 720: } else {
1.151 millert 721: if (verbose)
722: fprintf(ttyout, "Requesting %s\n", origline);
1.90 martynas 723: #ifndef SMALL
724: if (resume) {
725: struct stat stbuf;
726:
727: if (stat(savefile, &stbuf) == 0)
728: restart_point = stbuf.st_size;
729: else
730: restart_point = 0;
731: }
1.154 deraadt 732: #endif /* SMALL */
1.194 jca 733: ftp_printf(fin,
734: "GET /%s HTTP/1.1\r\n"
735: "Connection: close\r\n"
736: "Host: ", epath);
1.136 bluhm 737: if (proxyhost) {
1.184 jca 738: ftp_printf(fin, "%s", proxyhost);
1.136 bluhm 739: port = NULL;
740: } else if (strchr(host, ':')) {
1.55 fgsch 741: /*
742: * strip off scoped address portion, since it's
743: * local to node
744: */
1.32 itojun 745: h = strdup(host);
746: if (h == NULL)
747: errx(1, "Can't allocate memory.");
748: if ((p = strchr(h, '%')) != NULL)
749: *p = '\0';
1.184 jca 750: ftp_printf(fin, "[%s]", h);
1.32 itojun 751: free(h);
1.55 fgsch 752: } else
1.184 jca 753: ftp_printf(fin, "%s", host);
1.55 fgsch 754:
755: /*
756: * Send port number only if it's specified and does not equal
757: * 80. Some broken HTTP servers get confused if you explicitly
758: * send them the port number.
759: */
1.154 deraadt 760: #ifndef NOSSL
1.61 deraadt 761: if (port && strcmp(port, (ishttpsurl ? "443" : "80")) != 0)
1.184 jca 762: ftp_printf(fin, ":%s", port);
1.90 martynas 763: if (restart_point)
1.184 jca 764: ftp_printf(fin, "\r\nRange: bytes=%lld-",
1.75 martynas 765: (long long)restart_point);
1.154 deraadt 766: #else /* !NOSSL */
1.55 fgsch 767: if (port && strcmp(port, "80") != 0)
1.184 jca 768: ftp_printf(fin, ":%s", port);
1.154 deraadt 769: #endif /* !NOSSL */
1.194 jca 770: ftp_printf(fin, "\r\n%s%s\r\n",
1.124 lteo 771: buf ? buf : "", httpuseragent);
1.194 jca 772: if (credentials)
773: ftp_printf(fin, "Authorization: Basic %s\r\n",
774: credentials);
775: ftp_printf(fin, "\r\n");
1.28 itojun 776: }
1.95 martynas 777: free(epath);
1.74 pyr 778:
1.154 deraadt 779: #ifndef NOSSL
1.74 pyr 780: free(buf);
1.156 tb 781: #endif /* !NOSSL */
1.74 pyr 782: buf = NULL;
783:
1.176 jca 784: if (fflush(fin) == EOF) {
785: warnx("Writing HTTP request: %s", sockerror(tls));
1.6 millert 786: goto cleanup_url_get;
1.1 millert 787: }
1.176 jca 788: if ((buf = ftp_readline(fin, &len)) == NULL) {
789: warnx("Receiving HTTP reply: %s", sockerror(tls));
1.40 fgsch 790: goto cleanup_url_get;
1.1 millert 791: }
1.40 fgsch 792:
793: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
794: buf[--len] = '\0';
1.80 martynas 795: #ifndef SMALL
1.40 fgsch 796: if (debug)
797: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 798: #endif /* !SMALL */
1.40 fgsch 799:
1.1 millert 800: cp = strchr(buf, ' ');
801: if (cp == NULL)
802: goto improper;
803: else
804: cp++;
1.69 jsg 805:
806: strlcpy(ststr, cp, sizeof(ststr));
1.171 jca 807: status = strtonum(ststr, 200, 503, &errstr);
1.69 jsg 808: if (errstr) {
1.175 deraadt 809: strnvis(gerror, cp, sizeof gerror, VIS_SAFE);
810: warnx("Error retrieving %s: %s", origline, gerror);
1.69 jsg 811: goto cleanup_url_get;
812: }
813:
814: switch (status) {
815: case 200: /* OK */
1.75 martynas 816: #ifndef SMALL
1.109 sthen 817: /*
1.98 phessler 818: * When we request a partial file, and we receive an HTTP 200
819: * it is a good indication that the server doesn't support
820: * range requests, and is about to send us the entire file.
821: * If the restart_point == 0, then we are not actually
822: * requesting a partial file, and an HTTP 200 is appropriate.
823: */
824: if (resume && restart_point != 0) {
825: warnx("Server does not support resume.");
826: restart_point = resume = 0;
827: }
1.101 halex 828: /* FALLTHROUGH */
1.75 martynas 829: case 206: /* Partial Content */
1.91 halex 830: #endif /* !SMALL */
1.69 jsg 831: break;
832: case 301: /* Moved Permanently */
833: case 302: /* Found */
834: case 303: /* See Other */
835: case 307: /* Temporary Redirect */
1.40 fgsch 836: isredirect++;
1.54 fgsch 837: if (redirect_loop++ > 10) {
838: warnx("Too many redirections requested");
839: goto cleanup_url_get;
840: }
1.69 jsg 841: break;
1.75 martynas 842: #ifndef SMALL
843: case 416: /* Requested Range Not Satisfiable */
844: warnx("File is already fully retrieved.");
845: goto cleanup_url_get;
1.78 martynas 846: #endif /* !SMALL */
1.171 jca 847: case 503:
1.172 jca 848: isunavail = 1;
849: break;
1.69 jsg 850: default:
1.175 deraadt 851: strnvis(gerror, cp, sizeof gerror, VIS_SAFE);
852: warnx("Error retrieving %s: %s", origline, gerror);
1.6 millert 853: goto cleanup_url_get;
1.1 millert 854: }
855:
856: /*
857: * Read the rest of the header.
858: */
1.40 fgsch 859: free(buf);
860: filesize = -1;
861:
1.62 ray 862: for (;;) {
1.176 jca 863: if ((buf = ftp_readline(fin, &len)) == NULL) {
864: warnx("Receiving HTTP reply: %s", sockerror(tls));
1.40 fgsch 865: goto cleanup_url_get;
866: }
1.61 deraadt 867:
1.40 fgsch 868: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
869: buf[--len] = '\0';
870: if (len == 0)
1.1 millert 871: break;
1.80 martynas 872: #ifndef SMALL
1.40 fgsch 873: if (debug)
874: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 875: #endif /* !SMALL */
1.1 millert 876:
1.40 fgsch 877: /* Look for some headers */
878: cp = buf;
1.1 millert 879: #define CONTENTLEN "Content-Length: "
1.40 fgsch 880: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
1.104 sthen 881: size_t s;
1.40 fgsch 882: cp += sizeof(CONTENTLEN) - 1;
1.111 deraadt 883: if ((s = strcspn(cp, " \t")))
1.104 sthen 884: *(cp+s) = 0;
1.58 grunk 885: filesize = strtonum(cp, 0, LLONG_MAX, &errstr);
886: if (errstr != NULL)
1.40 fgsch 887: goto improper;
1.75 martynas 888: #ifndef SMALL
1.90 martynas 889: if (restart_point)
1.75 martynas 890: filesize += restart_point;
1.78 martynas 891: #endif /* !SMALL */
1.40 fgsch 892: #define LOCATION "Location: "
893: } else if (isredirect &&
894: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
895: cp += sizeof(LOCATION) - 1;
1.144 sthen 896: /*
897: * If there is a colon before the first slash, this URI
898: * is not relative. RFC 3986 4.2
899: */
900: if (cp[strcspn(cp, ":/")] != ':') {
1.102 halex 901: #ifdef SMALL
902: errx(1, "Relative redirect not supported");
903: #else /* SMALL */
1.144 sthen 904: /* XXX doesn't handle protocol-relative URIs */
1.102 halex 905: if (*cp == '/') {
906: locbase = NULL;
907: cp++;
908: } else {
909: locbase = strdup(path);
910: if (locbase == NULL)
911: errx(1, "Can't allocate memory"
912: " for location base");
913: loctail = strchr(locbase, '#');
914: if (loctail != NULL)
915: *loctail = '\0';
916: loctail = strchr(locbase, '?');
917: if (loctail != NULL)
918: *loctail = '\0';
919: loctail = strrchr(locbase, '/');
920: if (loctail == NULL) {
921: free(locbase);
922: locbase = NULL;
923: } else
924: loctail[1] = '\0';
925: }
926: /* Contruct URL from relative redirect */
927: if (asprintf(&redirurl, "%s%s%s%s/%s%s",
928: scheme, full_host,
929: portnum ? ":" : "",
930: portnum ? portnum : "",
931: locbase ? locbase : "",
932: cp) == -1)
933: errx(1, "Cannot build "
934: "redirect URL");
935: free(locbase);
936: #endif /* SMALL */
937: } else if ((redirurl = strdup(cp)) == NULL)
938: errx(1, "Cannot allocate memory for URL");
939: loctail = strchr(redirurl, '#');
940: if (loctail != NULL)
941: *loctail = '\0';
1.40 fgsch 942: if (verbose)
1.102 halex 943: fprintf(ttyout, "Redirected to %s\n", redirurl);
1.173 jca 944: ftp_close(&fin, &tls, &fd);
1.157 deraadt 945: rval = url_get(redirurl, proxyenv, savefile, lastfile);
1.102 halex 946: free(redirurl);
947: goto cleanup_url_get;
1.172 jca 948: #define RETRYAFTER "Retry-After: "
949: } else if (isunavail &&
950: strncasecmp(cp, RETRYAFTER, sizeof(RETRYAFTER) - 1) == 0) {
951: size_t s;
952: cp += sizeof(RETRYAFTER) - 1;
953: if ((s = strcspn(cp, " \t")))
954: cp[s] = '\0';
955: retryafter = strtonum(cp, 0, 0, &errstr);
956: if (errstr != NULL)
957: retryafter = -1;
1.178 jca 958: #define TRANSFER_ENCODING "Transfer-Encoding: "
959: } else if (strncasecmp(cp, TRANSFER_ENCODING,
960: sizeof(TRANSFER_ENCODING) - 1) == 0) {
961: cp += sizeof(TRANSFER_ENCODING) - 1;
962: cp[strcspn(cp, " \t")] = '\0';
963: if (strcasecmp(cp, "chunked") == 0)
964: chunked = 1;
1.40 fgsch 965: }
1.108 tobias 966: free(buf);
1.172 jca 967: }
968:
1.178 jca 969: /* Content-Length should be ignored for Transfer-Encoding: chunked */
970: if (chunked)
971: filesize = -1;
972:
1.172 jca 973: if (isunavail) {
974: if (retried || retryafter != 0)
1.175 deraadt 975: warnx("Error retrieving %s: 503 Service Unavailable",
976: origline);
1.172 jca 977: else {
978: if (verbose)
979: fprintf(ttyout, "Retrying %s\n", origline);
980: retried = 1;
1.174 jca 981: ftp_close(&fin, &tls, &fd);
1.172 jca 982: rval = url_get(origline, proxyenv, savefile, lastfile);
983: }
984: goto cleanup_url_get;
1.1 millert 985: }
986:
1.17 millert 987: /* Open the output file. */
1.100 halex 988: if (!pipeout) {
1.75 martynas 989: #ifndef SMALL
990: if (resume)
1.83 martynas 991: out = open(savefile, O_CREAT | O_WRONLY | O_APPEND,
992: 0666);
1.75 martynas 993: else
1.78 martynas 994: #endif /* !SMALL */
1.75 martynas 995: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC,
996: 0666);
1.170 deraadt 997: if (out == -1) {
1.10 deraadt 998: warn("Can't open %s", savefile);
999: goto cleanup_url_get;
1000: }
1.157 deraadt 1001: } else {
1.17 millert 1002: out = fileno(stdout);
1.157 deraadt 1003: #ifdef SMALL
1004: if (lastfile) {
1005: if (pledge("stdio tty", NULL) == -1)
1006: err(1, "pledge");
1007: }
1008: #endif
1009: }
1.1 millert 1010:
1.189 jca 1011: free(buf);
1012: if ((buf = malloc(buflen)) == NULL)
1013: errx(1, "Can't allocate memory for transfer buffer");
1014:
1.1 millert 1015: /* Trap signals */
1016: oldintr = NULL;
1.97 martynas 1017: oldinti = NULL;
1.1 millert 1018: if (setjmp(httpabort)) {
1019: if (oldintr)
1.2 millert 1020: (void)signal(SIGINT, oldintr);
1.97 martynas 1021: if (oldinti)
1022: (void)signal(SIGINFO, oldinti);
1.6 millert 1023: goto cleanup_url_get;
1.1 millert 1024: }
1025: oldintr = signal(SIGINT, aborthttp);
1026:
1027: bytes = 0;
1028: hashbytes = mark;
1.84 martynas 1029: progressmeter(-1, path);
1.43 millert 1030:
1.1 millert 1031: /* Finally, suck down the file. */
1.97 martynas 1032: oldinti = signal(SIGINFO, psummary);
1.178 jca 1033: if (chunked) {
1.182 jca 1034: error = save_chunked(fin, tls, out, buf, buflen);
1035: signal(SIGINFO, oldinti);
1036: if (error == -1)
1.178 jca 1037: goto cleanup_url_get;
1038: } else {
1.188 jca 1039: while ((len = fread(buf, 1, buflen, fin)) > 0) {
1.178 jca 1040: bytes += len;
1.188 jca 1041: for (cp = buf; len > 0; len -= wlen, cp += wlen) {
1042: if ((wlen = write(out, cp, len)) == -1) {
1.178 jca 1043: warn("Writing %s", savefile);
1044: signal(SIGINFO, oldinti);
1045: goto cleanup_url_get;
1.188 jca 1046: }
1.178 jca 1047: }
1048: if (hash && !progress) {
1049: while (bytes >= hashbytes) {
1050: (void)putc('#', ttyout);
1051: hashbytes += mark;
1052: }
1053: (void)fflush(ttyout);
1.1 millert 1054: }
1055: }
1.188 jca 1056: save_errno = errno;
1.178 jca 1057: signal(SIGINFO, oldinti);
1058: if (hash && !progress && bytes > 0) {
1059: if (bytes < mark)
1.10 deraadt 1060: (void)putc('#', ttyout);
1.178 jca 1061: (void)putc('\n', ttyout);
1.10 deraadt 1062: (void)fflush(ttyout);
1.1 millert 1063: }
1.188 jca 1064: if (len == 0 && ferror(fin)) {
1065: errno = save_errno;
1.178 jca 1066: warnx("Reading from socket: %s", sockerror(tls));
1067: goto cleanup_url_get;
1068: }
1.1 millert 1069: }
1.84 martynas 1070: progressmeter(1, NULL);
1.75 martynas 1071: if (
1072: #ifndef SMALL
1073: !resume &&
1.78 martynas 1074: #endif /* !SMALL */
1.75 martynas 1075: filesize != -1 && len == 0 && bytes != filesize) {
1.24 deraadt 1076: if (verbose)
1077: fputs("Read short file.\n", ttyout);
1078: goto cleanup_url_get;
1079: }
1080:
1.1 millert 1081: if (verbose)
1.97 martynas 1082: ptransfer(0);
1.2 millert 1083: (void)signal(SIGINT, oldintr);
1.1 millert 1084:
1.40 fgsch 1085: rval = 0;
1086: goto cleanup_url_get;
1.1 millert 1087:
1.14 millert 1088: noftpautologin:
1089: warnx(
1090: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
1091: goto cleanup_url_get;
1092:
1.1 millert 1093: improper:
1.8 millert 1094: warnx("Improper response from %s", host);
1.14 millert 1095:
1.6 millert 1096: cleanup_url_get:
1.181 jca 1097: #ifndef SMALL
1098: free(full_host);
1099: #endif /* !SMALL */
1.154 deraadt 1100: #ifndef NOSSL
1.128 jca 1101: free(sslhost);
1.154 deraadt 1102: #endif /* !NOSSL */
1.173 jca 1103: ftp_close(&fin, &tls, &fd);
1.162 sthen 1104: if (out >= 0 && out != fileno(stdout))
1105: close(out);
1.67 steven 1106: free(buf);
1.136 bluhm 1107: free(proxyhost);
1.67 steven 1108: free(proxyurl);
1.62 ray 1109: free(newline);
1.123 guenther 1110: free(credentials);
1.190 yasuoka 1111: free(proxy_credentials);
1.40 fgsch 1112: return (rval);
1.178 jca 1113: }
1114:
1115: static int
1116: save_chunked(FILE *fin, struct tls *tls, int out, char *buf, size_t buflen)
1117: {
1118:
1119: char *header, *end, *cp;
1120: unsigned long chunksize;
1121: size_t hlen, rlen, wlen;
1122: ssize_t written;
1123: char cr, lf;
1124:
1125: for (;;) {
1126: header = ftp_readline(fin, &hlen);
1127: if (header == NULL)
1128: break;
1129: /* strip CRLF and any optional chunk extension */
1130: header[strcspn(header, ";\r\n")] = '\0';
1131: errno = 0;
1132: chunksize = strtoul(header, &end, 16);
1133: if (errno || header[0] == '\0' || *end != '\0' ||
1134: chunksize > INT_MAX) {
1135: warnx("Invalid chunk size '%s'", header);
1136: free(header);
1137: return -1;
1138: }
1139: free(header);
1140:
1141: if (chunksize == 0) {
1142: /* We're done. Ignore optional trailer. */
1143: return 0;
1144: }
1145:
1146: for (written = 0; chunksize != 0; chunksize -= rlen) {
1147: rlen = (chunksize < buflen) ? chunksize : buflen;
1148: rlen = fread(buf, 1, rlen, fin);
1149: if (rlen == 0)
1150: break;
1151: bytes += rlen;
1152: for (cp = buf, wlen = rlen; wlen > 0;
1.179 deraadt 1153: wlen -= written, cp += written) {
1.178 jca 1154: if ((written = write(out, cp, wlen)) == -1) {
1155: warn("Writing output file");
1156: return -1;
1157: }
1158: }
1159: }
1160:
1161: if (rlen == 0 ||
1162: fread(&cr, 1, 1, fin) != 1 ||
1163: fread(&lf, 1, 1, fin) != 1)
1164: break;
1165:
1166: if (cr != '\r' || lf != '\n') {
1167: warnx("Invalid chunked encoding");
1168: return -1;
1169: }
1170: }
1171:
1172: if (ferror(fin))
1173: warnx("Error while reading from socket: %s", sockerror(tls));
1174: else
1175: warnx("Invalid chunked encoding: short read");
1176:
1177: return -1;
1.1 millert 1178: }
1179:
1180: /*
1181: * Abort a http retrieval
1182: */
1.51 deraadt 1183: /* ARGSUSED */
1.177 jca 1184: static void
1.51 deraadt 1185: aborthttp(int signo)
1.1 millert 1186: {
1187:
1188: alarmtimer(0);
1.10 deraadt 1189: fputs("\nhttp fetch aborted.\n", ttyout);
1190: (void)fflush(ttyout);
1.1 millert 1191: longjmp(httpabort, 1);
1192: }
1193:
1194: /*
1.22 deraadt 1195: * Abort a http retrieval
1196: */
1.51 deraadt 1197: /* ARGSUSED */
1.177 jca 1198: static void
1.51 deraadt 1199: abortfile(int signo)
1.22 deraadt 1200: {
1201:
1202: alarmtimer(0);
1203: fputs("\nfile fetch aborted.\n", ttyout);
1204: (void)fflush(ttyout);
1205: longjmp(httpabort, 1);
1206: }
1207:
1208: /*
1.1 millert 1209: * Retrieve multiple files from the command line, transferring
1210: * files of the form "host:path", "ftp://host/path" using the
1211: * ftp protocol, and files of the form "http://host/path" using
1212: * the http protocol.
1.2 millert 1213: * If path has a trailing "/", then return (-1);
1.1 millert 1214: * the path will be cd-ed into and the connection remains open,
1215: * and the function will return -1 (to indicate the connection
1216: * is alive).
1217: * If an error occurs the return value will be the offset+1 in
1218: * argv[] of the file that caused a problem (i.e, argv[x]
1219: * returns x+1)
1220: * Otherwise, 0 is returned if all files retrieved successfully.
1221: */
1222: int
1.50 deraadt 1223: auto_fetch(int argc, char *argv[], char *outfile)
1.1 millert 1224: {
1225: char *xargv[5];
1.62 ray 1226: char *cp, *url, *host, *dir, *file, *portnum;
1227: char *username, *pass, *pathstart;
1.6 millert 1228: char *ftpproxy, *httpproxy;
1.157 deraadt 1229: int rval, xargc, lastfile;
1.14 millert 1230: volatile int argpos;
1.49 krw 1231: int dirhasglob, filehasglob, oautologin;
1.137 deraadt 1232: char rempath[PATH_MAX];
1.1 millert 1233:
1234: argpos = 0;
1235:
1236: if (setjmp(toplevel)) {
1237: if (connected)
1238: disconnect(0, NULL);
1.2 millert 1239: return (argpos + 1);
1.1 millert 1240: }
1.3 millert 1241: (void)signal(SIGINT, (sig_t)intr);
1242: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 1243:
1.45 millert 1244: if ((ftpproxy = getenv(FTP_PROXY)) != NULL && *ftpproxy == '\0')
1245: ftpproxy = NULL;
1246: if ((httpproxy = getenv(HTTP_PROXY)) != NULL && *httpproxy == '\0')
1247: httpproxy = NULL;
1.6 millert 1248:
1.1 millert 1249: /*
1250: * Loop through as long as there's files to fetch.
1251: */
1.123 guenther 1252: username = pass = NULL;
1.62 ray 1253: for (rval = 0; (rval == 0) && (argpos < argc); free(url), argpos++) {
1.1 millert 1254: if (strchr(argv[argpos], ':') == NULL)
1255: break;
1.123 guenther 1256:
1257: free(username);
1258: free(pass);
1.62 ray 1259: host = dir = file = portnum = username = pass = NULL;
1.1 millert 1260:
1.157 deraadt 1261: lastfile = (argv[argpos+1] == NULL);
1262:
1.1 millert 1263: /*
1264: * We muck with the string, so we make a copy.
1265: */
1.62 ray 1266: url = strdup(argv[argpos]);
1267: if (url == NULL)
1.1 millert 1268: errx(1, "Can't allocate memory for auto-fetch.");
1269:
1.186 jca 1270: if (strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1271: if (file_get(url + sizeof(FILE_URL) - 1, outfile) == -1)
1272: rval = argpos + 1;
1273: continue;
1274: }
1275:
1.1 millert 1276: /*
1.186 jca 1277: * Try HTTP URL-style arguments next.
1.1 millert 1278: */
1.62 ray 1279: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.186 jca 1280: strncasecmp(url, HTTPS_URL, sizeof(HTTPS_URL) -1) == 0) {
1.54 fgsch 1281: redirect_loop = 0;
1.171 jca 1282: retried = 0;
1.157 deraadt 1283: if (url_get(url, httpproxy, outfile, lastfile) == -1)
1.1 millert 1284: rval = argpos + 1;
1285: continue;
1286: }
1287:
1288: /*
1.6 millert 1289: * Try FTP URL-style arguments next. If ftpproxy is
1290: * set, use url_get() instead of standard ftp.
1291: * Finally, try host:file.
1.1 millert 1292: */
1.62 ray 1293: host = url;
1294: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 1295: char *passend, *passagain, *userend;
1.31 itojun 1296:
1.6 millert 1297: if (ftpproxy) {
1.157 deraadt 1298: if (url_get(url, ftpproxy, outfile, lastfile) == -1)
1.6 millert 1299: rval = argpos + 1;
1300: continue;
1301: }
1.1 millert 1302: host += sizeof(FTP_URL) - 1;
1.8 millert 1303: dir = strchr(host, '/');
1.1 millert 1304:
1.8 millert 1305: /* Look for [user:pass@]host[:port] */
1.31 itojun 1306:
1307: /* check if we have "user:pass@" */
1.37 heko 1308: userend = strchr(host, ':');
1.31 itojun 1309: passend = strchr(host, '@');
1310: if (passend && userend && userend < passend &&
1311: (!dir || passend < dir)) {
1.62 ray 1312: username = host;
1.31 itojun 1313: pass = userend + 1;
1314: host = passend + 1;
1315: *userend = *passend = '\0';
1.37 heko 1316: passagain = strchr(host, '@');
1.42 deraadt 1317: if (strchr(pass, '@') != NULL ||
1.37 heko 1318: (passagain != NULL && passagain < dir)) {
1319: warnx(at_encoding_warning);
1.123 guenther 1320: username = pass = NULL;
1.37 heko 1321: goto bad_ftp_url;
1.42 deraadt 1322: }
1.31 itojun 1323:
1.77 martynas 1324: if (EMPTYSTRING(username)) {
1.11 millert 1325: bad_ftp_url:
1.31 itojun 1326: warnx("Invalid URL: %s", argv[argpos]);
1327: rval = argpos + 1;
1.123 guenther 1328: username = pass = NULL;
1.31 itojun 1329: continue;
1330: }
1.62 ray 1331: username = urldecode(username);
1.37 heko 1332: pass = urldecode(pass);
1.8 millert 1333: }
1.31 itojun 1334:
1335: /* check [host]:port, or [host] */
1336: if (host[0] == '[') {
1337: cp = strchr(host, ']');
1338: if (cp && (!dir || cp < dir)) {
1339: if (cp + 1 == dir || cp[1] == ':') {
1340: host++;
1341: *cp++ = '\0';
1342: } else
1343: cp = NULL;
1344: } else
1345: cp = host;
1.25 itojun 1346: } else
1347: cp = host;
1.31 itojun 1348:
1349: /* split off host[:port] if there is */
1350: if (cp) {
1351: portnum = strchr(cp, ':');
1.52 henning 1352: pathstart = strchr(cp, '/');
1353: /* : in path is not a port # indicator */
1354: if (portnum && pathstart &&
1355: pathstart < portnum)
1356: portnum = NULL;
1357:
1.31 itojun 1358: if (!portnum)
1359: ;
1360: else {
1361: if (!dir)
1362: ;
1363: else if (portnum + 1 < dir) {
1364: *portnum++ = '\0';
1365: /*
1366: * XXX should check if portnum
1367: * is decimal number
1368: */
1369: } else {
1370: /* empty portnum */
1371: goto bad_ftp_url;
1372: }
1373: }
1374: } else
1375: portnum = NULL;
1.8 millert 1376: } else { /* classic style `host:file' */
1377: dir = strchr(host, ':');
1378: }
1.1 millert 1379: if (EMPTYSTRING(host)) {
1380: rval = argpos + 1;
1381: continue;
1382: }
1383:
1384: /*
1.9 millert 1385: * If dir is NULL, the file wasn't specified
1.1 millert 1386: * (URL looked something like ftp://host)
1387: */
1.8 millert 1388: if (dir != NULL)
1389: *dir++ = '\0';
1.1 millert 1390:
1391: /*
1392: * Extract the file and (if present) directory name.
1393: */
1.42 deraadt 1394: if (!EMPTYSTRING(dir)) {
1.8 millert 1395: cp = strrchr(dir, '/');
1.1 millert 1396: if (cp != NULL) {
1397: *cp++ = '\0';
1398: file = cp;
1399: } else {
1400: file = dir;
1401: dir = NULL;
1402: }
1403: }
1.80 martynas 1404: #ifndef SMALL
1.1 millert 1405: if (debug)
1.42 deraadt 1406: fprintf(ttyout,
1407: "user %s:%s host %s port %s dir %s file %s\n",
1.76 martynas 1408: username, pass ? "XXXX" : NULL, host, portnum,
1409: dir, file);
1.80 martynas 1410: #endif /* !SMALL */
1.1 millert 1411:
1412: /*
1.49 krw 1413: * Set up the connection.
1.1 millert 1414: */
1.49 krw 1415: if (connected)
1416: disconnect(0, NULL);
1417: xargv[0] = __progname;
1418: xargv[1] = host;
1.8 millert 1419: xargv[2] = NULL;
1.49 krw 1420: xargc = 2;
1421: if (!EMPTYSTRING(portnum)) {
1422: xargv[2] = portnum;
1423: xargv[3] = NULL;
1424: xargc = 3;
1425: }
1426: oautologin = autologin;
1.88 martynas 1427: if (username == NULL)
1.89 halex 1428: anonftp = 1;
1429: else {
1430: anonftp = 0;
1.49 krw 1431: autologin = 0;
1.89 halex 1432: }
1.49 krw 1433: setpeer(xargc, xargv);
1434: autologin = oautologin;
1.87 martynas 1435: if (connected == 0 ||
1436: (connected == 1 && autologin && (username == NULL ||
1437: !ftp_login(host, username, pass)))) {
1.49 krw 1438: warnx("Can't connect or login to host `%s'", host);
1.8 millert 1439: rval = argpos + 1;
1440: continue;
1.1 millert 1441: }
1.49 krw 1442:
1443: /* Always use binary transfers. */
1444: setbinary(0, NULL);
1.1 millert 1445:
1.4 millert 1446: dirhasglob = filehasglob = 0;
1447: if (doglob) {
1.42 deraadt 1448: if (!EMPTYSTRING(dir) &&
1.4 millert 1449: strpbrk(dir, "*?[]{}") != NULL)
1450: dirhasglob = 1;
1.42 deraadt 1451: if (!EMPTYSTRING(file) &&
1.4 millert 1452: strpbrk(file, "*?[]{}") != NULL)
1453: filehasglob = 1;
1454: }
1455:
1.1 millert 1456: /* Change directories, if necessary. */
1.42 deraadt 1457: if (!EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 1458: xargv[0] = "cd";
1459: xargv[1] = dir;
1460: xargv[2] = NULL;
1461: cd(2, xargv);
1.42 deraadt 1462: if (!dirchange) {
1.1 millert 1463: rval = argpos + 1;
1464: continue;
1465: }
1466: }
1467:
1468: if (EMPTYSTRING(file)) {
1.86 martynas 1469: #ifndef SMALL
1.1 millert 1470: rval = -1;
1.86 martynas 1471: #else /* !SMALL */
1472: recvrequest("NLST", "-", NULL, "w", 0, 0);
1473: rval = 0;
1474: #endif /* !SMALL */
1.1 millert 1475: continue;
1476: }
1477:
1.21 marc 1478: if (verbose)
1.10 deraadt 1479: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 1480:
1.4 millert 1481: if (dirhasglob) {
1482: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
1483: file = rempath;
1484: }
1485:
1486: /* Fetch the file(s). */
1.10 deraadt 1487: xargc = 2;
1.1 millert 1488: xargv[0] = "get";
1489: xargv[1] = file;
1490: xargv[2] = NULL;
1.4 millert 1491: if (dirhasglob || filehasglob) {
1492: int ointeractive;
1493:
1494: ointeractive = interactive;
1495: interactive = 0;
1496: xargv[0] = "mget";
1.78 martynas 1497: #ifndef SMALL
1498: if (resume) {
1499: xargc = 3;
1500: xargv[1] = "-c";
1501: xargv[2] = file;
1502: xargv[3] = NULL;
1503: }
1504: #endif /* !SMALL */
1.10 deraadt 1505: mget(xargc, xargv);
1.5 millert 1506: interactive = ointeractive;
1.10 deraadt 1507: } else {
1.17 millert 1508: if (outfile != NULL) {
1509: xargv[2] = outfile;
1510: xargv[3] = NULL;
1.10 deraadt 1511: xargc++;
1512: }
1.75 martynas 1513: #ifndef SMALL
1514: if (resume)
1515: reget(xargc, xargv);
1516: else
1.78 martynas 1517: #endif /* !SMALL */
1.75 martynas 1518: get(xargc, xargv);
1.10 deraadt 1519: }
1.1 millert 1520:
1.4 millert 1521: if ((code / 100) != COMPLETE)
1.1 millert 1522: rval = argpos + 1;
1523: }
1524: if (connected && rval != -1)
1525: disconnect(0, NULL);
1526: return (rval);
1.37 heko 1527: }
1528:
1529: char *
1.50 deraadt 1530: urldecode(const char *str)
1.37 heko 1531: {
1.53 deraadt 1532: char *ret, c;
1533: int i, reallen;
1.37 heko 1534:
1.53 deraadt 1535: if (str == NULL)
1536: return NULL;
1537: if ((ret = malloc(strlen(str)+1)) == NULL)
1538: err(1, "Can't allocate memory for URL decoding");
1539: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
1540: c = str[i];
1541: if (c == '+') {
1542: *ret = ' ';
1543: continue;
1544: }
1.61 deraadt 1545:
1546: /* Cannot use strtol here because next char
1547: * after %xx may be a digit.
1548: */
1.143 guenther 1549: if (c == '%' && isxdigit((unsigned char)str[i+1]) &&
1550: isxdigit((unsigned char)str[i+2])) {
1.53 deraadt 1551: *ret = hextochar(&str[i+1]);
1552: i+=2;
1553: continue;
1554: }
1555: *ret = c;
1556: }
1557: *ret = '\0';
1558:
1559: return ret-reallen;
1.123 guenther 1560: }
1561:
1.177 jca 1562: static char *
1.123 guenther 1563: recode_credentials(const char *userinfo)
1564: {
1565: char *ui, *creds;
1566: size_t ulen, credsize;
1567:
1568: /* url-decode the user and pass */
1569: ui = urldecode(userinfo);
1570:
1571: ulen = strlen(ui);
1572: credsize = (ulen + 2) / 3 * 4 + 1;
1573: creds = malloc(credsize);
1574: if (creds == NULL)
1575: errx(1, "out of memory");
1576: if (b64_ntop(ui, ulen, creds, credsize) == -1)
1577: errx(1, "error in base64 encoding");
1578: free(ui);
1579: return (creds);
1.37 heko 1580: }
1581:
1.177 jca 1582: static char
1.50 deraadt 1583: hextochar(const char *str)
1.37 heko 1584: {
1.143 guenther 1585: unsigned char c, ret;
1.37 heko 1586:
1.53 deraadt 1587: c = str[0];
1588: ret = c;
1589: if (isalpha(c))
1590: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1591: else
1592: ret -= '0';
1593: ret *= 16;
1594:
1595: c = str[1];
1596: ret += c;
1597: if (isalpha(c))
1598: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1599: else
1600: ret -= '0';
1601: return ret;
1.25 itojun 1602: }
1603:
1604: int
1.50 deraadt 1605: isurl(const char *p)
1.25 itojun 1606: {
1.27 millert 1607:
1.26 deraadt 1608: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
1609: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.154 deraadt 1610: #ifndef NOSSL
1.61 deraadt 1611: strncasecmp(p, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0 ||
1.154 deraadt 1612: #endif /* !NOSSL */
1.27 millert 1613: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
1614: strstr(p, ":/"))
1615: return (1);
1616: return (0);
1.1 millert 1617: }
1.61 deraadt 1618:
1.177 jca 1619: static char *
1.176 jca 1620: ftp_readline(FILE *fp, size_t *lenp)
1.61 deraadt 1621: {
1.176 jca 1622: return fparseln(fp, lenp, NULL, "\0\0\0", 0);
1.173 jca 1623: }
1.184 jca 1624:
1625: #ifndef SMALL
1626: static int
1627: ftp_printf(FILE *fp, const char *fmt, ...)
1628: {
1629: va_list ap;
1630: int ret;
1631:
1632: va_start(ap, fmt);
1633: ret = vfprintf(fp, fmt, ap);
1634: va_end(ap);
1635:
1636: if (debug) {
1637: va_start(ap, fmt);
1638: vfprintf(ttyout, fmt, ap);
1639: va_end(ap);
1640: }
1641:
1642: return ret;
1643: }
1644: #endif /* !SMALL */
1.173 jca 1645:
1.177 jca 1646: static void
1.189 jca 1647: ftp_close(FILE **fin, struct tls **tls, int *fd)
1.173 jca 1648: {
1649: #ifndef NOSSL
1650: int ret;
1651:
1652: if (*tls != NULL) {
1653: if (tls_session_fd != -1)
1654: dprintf(STDERR_FILENO, "tls session resumed: %s\n",
1655: tls_conn_session_resumed(*tls) ? "yes" : "no");
1656: do {
1657: ret = tls_close(*tls);
1658: } while (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT);
1659: tls_free(*tls);
1660: *tls = NULL;
1661: }
1.176 jca 1662: if (*fd != -1) {
1663: close(*fd);
1664: *fd = -1;
1665: }
1.173 jca 1666: #endif
1667: if (*fin != NULL) {
1668: fclose(*fin);
1669: *fin = NULL;
1670: }
1.61 deraadt 1671: }
1672:
1.177 jca 1673: static const char *
1.176 jca 1674: sockerror(struct tls *tls)
1675: {
1676: int save_errno = errno;
1.154 deraadt 1677: #ifndef NOSSL
1.176 jca 1678: if (tls != NULL) {
1679: const char *tlserr = tls_error(tls);
1680: if (tlserr != NULL)
1681: return tlserr;
1.139 bluhm 1682: }
1.176 jca 1683: #endif
1684: return strerror(save_errno);
1.61 deraadt 1685: }
1686:
1.176 jca 1687: #ifndef NOSSL
1.177 jca 1688: static int
1.81 espie 1689: proxy_connect(int socket, char *host, char *cookie)
1.61 deraadt 1690: {
1.66 ray 1691: int l;
1.61 deraadt 1692: char buf[1024];
1.192 yasuoka 1693: char *connstr, *hosttail, *port;
1.61 deraadt 1694:
1695: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
1696: (hosttail[1] == '\0' || hosttail[1] == ':')) {
1697: host++;
1698: *hosttail++ = '\0';
1699: } else
1700: hosttail = host;
1701:
1.179 deraadt 1702: port = strrchr(hosttail, ':'); /* find portnum */
1.61 deraadt 1703: if (port != NULL)
1704: *port++ = '\0';
1705: if (!port)
1706: port = "443";
1707:
1.81 espie 1708: if (cookie) {
1709: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n"
1710: "Proxy-Authorization: Basic %s\r\n%s\r\n\r\n",
1711: host, port, cookie, HTTP_USER_AGENT);
1712: } else {
1713: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n%s\r\n\r\n",
1714: host, port, HTTP_USER_AGENT);
1715: }
1716:
1.66 ray 1717: if (l == -1)
1.61 deraadt 1718: errx(1, "Could not allocate memory to assemble connect string!");
1.80 martynas 1719: #ifndef SMALL
1.68 ray 1720: if (debug)
1721: printf("%s", connstr);
1.80 martynas 1722: #endif /* !SMALL */
1.66 ray 1723: if (write(socket, connstr, l) != l)
1.68 ray 1724: err(1, "Could not send connect string");
1.192 yasuoka 1725: read(socket, &buf, sizeof(buf)); /* only proxy header XXX: error handling? */
1.71 ray 1726: free(connstr);
1.61 deraadt 1727: return(200);
1.176 jca 1728: }
1729:
1.177 jca 1730: static int
1.176 jca 1731: stdio_tls_write_wrapper(void *arg, const char *buf, int len)
1732: {
1733: struct tls *tls = arg;
1734: ssize_t ret;
1735:
1736: do {
1737: ret = tls_write(tls, buf, len);
1738: } while (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT);
1739:
1740: return ret;
1741: }
1742:
1.177 jca 1743: static int
1.176 jca 1744: stdio_tls_read_wrapper(void *arg, char *buf, int len)
1745: {
1746: struct tls *tls = arg;
1747: ssize_t ret;
1748:
1749: do {
1750: ret = tls_read(tls, buf, len);
1751: } while (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT);
1752:
1753: return ret;
1.61 deraadt 1754: }
1.158 jca 1755: #endif /* !NOSSL */
![[BACK]](/icons/back.gif){kind=icon}
Return to fetch.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ftp