Annotation of src/usr.bin/ftp/fetch.c, Revision 1.129
1.129 ! deraadt 1: /* $OpenBSD: fetch.c,v 1.128 2014/08/25 11:33:55 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/param.h>
39: #include <sys/socket.h>
1.22 deraadt 40: #include <sys/stat.h>
1.1 millert 41:
42: #include <netinet/in.h>
43:
44: #include <arpa/ftp.h>
45: #include <arpa/inet.h>
46:
47: #include <ctype.h>
48: #include <err.h>
1.17 millert 49: #include <libgen.h>
1.58 grunk 50: #include <limits.h>
1.1 millert 51: #include <netdb.h>
52: #include <fcntl.h>
1.3 millert 53: #include <signal.h>
1.1 millert 54: #include <stdio.h>
1.61 deraadt 55: #include <stdarg.h>
1.19 deraadt 56: #include <errno.h>
1.1 millert 57: #include <stdlib.h>
58: #include <string.h>
59: #include <unistd.h>
1.40 fgsch 60: #include <util.h>
1.73 drahn 61: #include <resolv.h>
1.1 millert 62:
1.61 deraadt 63: #ifndef SMALL
1.126 jsing 64: #include <ressl.h>
1.78 martynas 65: #else /* !SMALL */
1.126 jsing 66: struct ressl;
1.78 martynas 67: #endif /* !SMALL */
1.61 deraadt 68:
1.1 millert 69: #include "ftp_var.h"
1.86 martynas 70: #include "cmds.h"
1.1 millert 71:
1.38 millert 72: static int url_get(const char *, const char *, const char *);
73: void aborthttp(int);
74: void abortfile(int);
1.42 deraadt 75: char hextochar(const char *);
76: char *urldecode(const char *);
1.123 guenther 77: char *recode_credentials(const char *_userinfo);
1.126 jsing 78: int ftp_printf(FILE *, struct ressl *, const char *, ...) __attribute__((format(printf, 3, 4)));
79: char *ftp_readline(FILE *, struct ressl *, size_t *);
80: size_t ftp_read(FILE *, struct ressl *, char *, size_t);
1.61 deraadt 81: #ifndef SMALL
1.81 espie 82: int proxy_connect(int, char *, char *);
1.126 jsing 83: int SSL_vprintf(struct ressl *, const char *, va_list);
84: char *SSL_readline(struct ressl *, size_t *);
1.78 martynas 85: #endif /* !SMALL */
1.14 millert 86:
1.1 millert 87: #define FTP_URL "ftp://" /* ftp URL prefix */
88: #define HTTP_URL "http://" /* http URL prefix */
1.61 deraadt 89: #define HTTPS_URL "https://" /* https URL prefix */
1.22 deraadt 90: #define FILE_URL "file:" /* file URL prefix */
1.6 millert 91: #define FTP_PROXY "ftp_proxy" /* env var with ftp proxy location */
1.1 millert 92: #define HTTP_PROXY "http_proxy" /* env var with http proxy location */
93:
94: #define EMPTYSTRING(x) ((x) == NULL || (*(x) == '\0'))
95:
1.110 guenther 96: static const char at_encoding_warning[] =
1.53 deraadt 97: "Extra `@' characters in usernames and passwords should be encoded as %%40";
1.37 heko 98:
1.1 millert 99: jmp_buf httpabort;
100:
1.54 fgsch 101: static int redirect_loop;
102:
1.1 millert 103: /*
1.95 martynas 104: * Determine whether the character needs encoding, per RFC1738:
105: * - No corresponding graphic US-ASCII.
106: * - Unsafe characters.
107: */
108: static int
109: unsafe_char(const char *c)
110: {
111: const char *unsafe_chars = " <>\"#{}|\\^~[]`";
112:
113: /*
114: * No corresponding graphic US-ASCII.
115: * Control characters and octets not used in US-ASCII.
116: */
117: return (iscntrl(*c) || !isascii(*c) ||
118:
119: /*
120: * Unsafe characters.
121: * '%' is also unsafe, if is not followed by two
122: * hexadecimal digits.
123: */
124: strchr(unsafe_chars, *c) != NULL ||
125: (*c == '%' && (!isxdigit(*++c) || !isxdigit(*++c))));
126: }
127:
128: /*
129: * Encode given URL, per RFC1738.
130: * Allocate and return string to the caller.
131: */
132: static char *
133: url_encode(const char *path)
134: {
135: size_t i, length, new_length;
136: char *epath, *epathp;
137:
138: length = new_length = strlen(path);
139:
140: /*
141: * First pass:
142: * Count unsafe characters, and determine length of the
143: * final URL.
144: */
145: for (i = 0; i < length; i++)
146: if (unsafe_char(path + i))
147: new_length += 2;
148:
149: epath = epathp = malloc(new_length + 1); /* One more for '\0'. */
150: if (epath == NULL)
1.102 halex 151: err(1, "Can't allocate memory for URL encoding");
1.95 martynas 152:
153: /*
154: * Second pass:
155: * Encode, and copy final URL.
156: */
157: for (i = 0; i < length; i++)
158: if (unsafe_char(path + i)) {
159: snprintf(epathp, 4, "%%" "%02x", path[i]);
160: epathp += 3;
161: } else
162: *(epathp++) = path[i];
163:
164: *epathp = '\0';
165: return (epath);
166: }
167:
168: /*
1.6 millert 169: * Retrieve URL, via the proxy in $proxyvar if necessary.
1.1 millert 170: * Modifies the string argument given.
171: * Returns -1 on failure, 0 on success
172: */
1.14 millert 173: static int
1.50 deraadt 174: url_get(const char *origline, const char *proxyenv, const char *outfile)
1.1 millert 175: {
1.69 jsg 176: char pbuf[NI_MAXSERV], hbuf[NI_MAXHOST], *cp, *portnum, *path, ststr[4];
1.62 ray 177: char *hosttail, *cause = "unknown", *newline, *host, *port, *buf = NULL;
1.106 haesbaer 178: char *epath, *redirurl, *loctail, *h, *p;
1.53 deraadt 179: int error, i, isftpurl = 0, isfileurl = 0, isredirect = 0, rval = -1;
1.105 haesbaer 180: struct addrinfo hints, *res0, *res, *ares = NULL;
1.34 millert 181: const char * volatile savefile;
1.62 ray 182: char * volatile proxyurl = NULL;
1.123 guenther 183: char *credentials = NULL;
1.53 deraadt 184: volatile int s = -1, out;
1.97 martynas 185: volatile sig_t oldintr, oldinti;
1.53 deraadt 186: FILE *fin = NULL;
1.1 millert 187: off_t hashbytes;
1.58 grunk 188: const char *errstr;
1.114 tedu 189: ssize_t len, wlen;
1.61 deraadt 190: #ifndef SMALL
191: char *sslpath = NULL, *sslhost = NULL;
1.123 guenther 192: char *locbase, *full_host = NULL;
1.102 halex 193: const char *scheme;
1.123 guenther 194: int ishttpurl = 0, ishttpsurl = 0;
1.78 martynas 195: #endif /* !SMALL */
1.126 jsing 196: struct ressl *ssl = NULL;
1.70 deraadt 197: int status;
1.105 haesbaer 198: int save_errno;
1.113 tedu 199: const size_t buflen = 128 * 1024;
1.14 millert 200:
1.97 martynas 201: direction = "received";
202:
1.62 ray 203: newline = strdup(origline);
204: if (newline == NULL)
1.14 millert 205: errx(1, "Can't allocate memory to parse URL");
1.102 halex 206: if (strncasecmp(newline, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
1.62 ray 207: host = newline + sizeof(HTTP_URL) - 1;
1.102 halex 208: #ifndef SMALL
1.123 guenther 209: ishttpurl = 1;
1.102 halex 210: scheme = HTTP_URL;
211: #endif /* !SMALL */
212: } else if (strncasecmp(newline, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.62 ray 213: host = newline + sizeof(FTP_URL) - 1;
1.14 millert 214: isftpurl = 1;
1.102 halex 215: #ifndef SMALL
216: scheme = FTP_URL;
217: #endif /* !SMALL */
1.62 ray 218: } else if (strncasecmp(newline, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
219: host = newline + sizeof(FILE_URL) - 1;
1.22 deraadt 220: isfileurl = 1;
1.61 deraadt 221: #ifndef SMALL
1.102 halex 222: scheme = FILE_URL;
1.62 ray 223: } else if (strncasecmp(newline, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0) {
224: host = newline + sizeof(HTTPS_URL) - 1;
1.61 deraadt 225: ishttpsurl = 1;
1.102 halex 226: scheme = HTTPS_URL;
1.78 martynas 227: #endif /* !SMALL */
1.14 millert 228: } else
1.62 ray 229: errx(1, "url_get: Invalid URL '%s'", newline);
1.6 millert 230:
1.22 deraadt 231: if (isfileurl) {
232: path = host;
233: } else {
1.93 martynas 234: path = strchr(host, '/'); /* Find path */
1.22 deraadt 235: if (EMPTYSTRING(path)) {
1.93 martynas 236: if (outfile) { /* No slash, but */
237: path=strchr(host,'\0'); /* we have outfile. */
238: goto noslash;
239: }
1.22 deraadt 240: if (isftpurl)
241: goto noftpautologin;
1.94 martynas 242: warnx("No `/' after host (use -o): %s", origline);
1.22 deraadt 243: goto cleanup_url_get;
244: }
245: *path++ = '\0';
1.93 martynas 246: if (EMPTYSTRING(path) && !outfile) {
1.22 deraadt 247: if (isftpurl)
248: goto noftpautologin;
1.94 martynas 249: warnx("No filename after host (use -o): %s", origline);
1.22 deraadt 250: goto cleanup_url_get;
251: }
1.14 millert 252: }
1.1 millert 253:
1.93 martynas 254: noslash:
1.106 haesbaer 255:
256: #ifndef SMALL
257: /*
258: * Look for auth header in host, since now host does not
259: * contain the path. Basic auth from RFC 2617, valid
260: * characters for path are in RFC 3986 section 3.3.
261: */
1.123 guenther 262: if (proxyenv == NULL && (ishttpurl || ishttpsurl)) {
1.106 haesbaer 263: if ((p = strchr(host, '@')) != NULL) {
1.123 guenther 264: *p = '\0';
265: credentials = recode_credentials(host);
1.106 haesbaer 266: host = p + 1;
267: }
268: }
269: #endif /* SMALL */
270:
1.17 millert 271: if (outfile)
272: savefile = outfile;
1.93 martynas 273: else {
274: if (path[strlen(path) - 1] == '/') /* Consider no file */
275: savefile = NULL; /* after dir invalid. */
276: else
277: savefile = basename(path);
1.75 martynas 278: }
279:
1.14 millert 280: if (EMPTYSTRING(savefile)) {
281: if (isftpurl)
282: goto noftpautologin;
1.94 martynas 283: warnx("No filename after directory (use -o): %s", origline);
1.6 millert 284: goto cleanup_url_get;
1.14 millert 285: }
1.1 millert 286:
1.93 martynas 287: #ifndef SMALL
1.100 halex 288: if (resume && pipeout) {
1.93 martynas 289: warnx("can't append to stdout");
290: goto cleanup_url_get;
291: }
292: #endif /* !SMALL */
293:
1.59 uwe 294: if (!isfileurl && proxyenv != NULL) { /* use proxy */
1.61 deraadt 295: #ifndef SMALL
296: if (ishttpsurl) {
297: sslpath = strdup(path);
298: sslhost = strdup(host);
299: if (! sslpath || ! sslhost)
300: errx(1, "Can't allocate memory for https path/host.");
301: }
1.78 martynas 302: #endif /* !SMALL */
1.62 ray 303: proxyurl = strdup(proxyenv);
304: if (proxyurl == NULL)
1.14 millert 305: errx(1, "Can't allocate memory for proxy URL.");
1.62 ray 306: if (strncasecmp(proxyurl, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
307: host = proxyurl + sizeof(HTTP_URL) - 1;
308: else if (strncasecmp(proxyurl, FTP_URL, sizeof(FTP_URL) - 1) == 0)
309: host = proxyurl + sizeof(FTP_URL) - 1;
1.6 millert 310: else {
1.14 millert 311: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 312: goto cleanup_url_get;
313: }
1.14 millert 314: if (EMPTYSTRING(host)) {
315: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 316: goto cleanup_url_get;
1.14 millert 317: }
1.93 martynas 318: if (*--path == '\0')
319: *path = '/'; /* add / back to real path */
1.1 millert 320: path = strchr(host, '/'); /* remove trailing / on host */
1.42 deraadt 321: if (!EMPTYSTRING(path))
1.73 drahn 322: *path++ = '\0'; /* i guess this ++ is useless */
323:
324: path = strchr(host, '@'); /* look for credentials in proxy */
325: if (!EMPTYSTRING(path)) {
1.81 espie 326: *path = '\0';
1.123 guenther 327: if (strchr(host, ':') == NULL) {
1.73 drahn 328: warnx("Malformed proxy URL: %s", proxyenv);
329: goto cleanup_url_get;
330: }
1.123 guenther 331: credentials = recode_credentials(host);
1.81 espie 332: *path = '@'; /* restore @ in proxyurl */
1.123 guenther 333:
1.73 drahn 334: /*
1.81 espie 335: * This removes the password from proxyurl,
1.73 drahn 336: * filling with stars
337: */
1.81 espie 338: for (host = 1 + strchr(proxyurl + 5, ':'); *host != '@';
1.73 drahn 339: host++)
340: *host = '*';
341:
1.81 espie 342: host = path + 1;
1.73 drahn 343: }
1.123 guenther 344:
1.62 ray 345: path = newline;
1.129 ! deraadt 346: #ifndef SMALL
1.128 jca 347: } else if (ishttpsurl) {
348: sslhost = strdup(host);
349: if (sslhost == NULL)
350: errx(1, "Can't allocate memory for https path/host.");
1.129 ! deraadt 351: #endif /* !SMALL */
1.1 millert 352: }
353:
1.22 deraadt 354: if (isfileurl) {
355: struct stat st;
356:
357: s = open(path, O_RDONLY);
358: if (s == -1) {
359: warn("Can't open file %s", path);
360: goto cleanup_url_get;
361: }
362:
363: if (fstat(s, &st) == -1)
364: filesize = -1;
365: else
366: filesize = st.st_size;
367:
1.83 martynas 368: /* Open the output file. */
1.100 halex 369: if (!pipeout) {
1.75 martynas 370: #ifndef SMALL
371: if (resume)
1.82 deraadt 372: out = open(savefile, O_CREAT | O_WRONLY |
373: O_APPEND, 0666);
374:
1.75 martynas 375: else
1.78 martynas 376: #endif /* !SMALL */
1.75 martynas 377: out = open(savefile, O_CREAT | O_WRONLY |
378: O_TRUNC, 0666);
1.22 deraadt 379: if (out < 0) {
380: warn("Can't open %s", savefile);
381: goto cleanup_url_get;
382: }
383: } else
384: out = fileno(stdout);
385:
1.75 martynas 386: #ifndef SMALL
387: if (resume) {
388: if (fstat(out, &st) == -1) {
389: warn("Can't fstat %s", savefile);
390: goto cleanup_url_get;
391: }
392: if (lseek(s, st.st_size, SEEK_SET) == -1) {
393: warn("Can't lseek %s", path);
394: goto cleanup_url_get;
395: }
396: restart_point = st.st_size;
397: }
1.78 martynas 398: #endif /* !SMALL */
1.75 martynas 399:
1.22 deraadt 400: /* Trap signals */
401: oldintr = NULL;
1.97 martynas 402: oldinti = NULL;
1.22 deraadt 403: if (setjmp(httpabort)) {
404: if (oldintr)
405: (void)signal(SIGINT, oldintr);
1.97 martynas 406: if (oldinti)
407: (void)signal(SIGINFO, oldinti);
1.22 deraadt 408: goto cleanup_url_get;
409: }
410: oldintr = signal(SIGINT, abortfile);
1.42 deraadt 411:
1.22 deraadt 412: bytes = 0;
413: hashbytes = mark;
1.84 martynas 414: progressmeter(-1, path);
1.40 fgsch 415:
1.113 tedu 416: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 417: errx(1, "Can't allocate memory for transfer buffer");
1.42 deraadt 418:
1.22 deraadt 419: /* Finally, suck down the file. */
420: i = 0;
1.97 martynas 421: oldinti = signal(SIGINFO, psummary);
1.113 tedu 422: while ((len = read(s, buf, buflen)) > 0) {
1.22 deraadt 423: bytes += len;
424: for (cp = buf; len > 0; len -= i, cp += i) {
425: if ((i = write(out, cp, len)) == -1) {
426: warn("Writing %s", savefile);
1.97 martynas 427: signal(SIGINFO, oldinti);
1.22 deraadt 428: goto cleanup_url_get;
429: }
430: else if (i == 0)
431: break;
432: }
433: if (hash && !progress) {
434: while (bytes >= hashbytes) {
435: (void)putc('#', ttyout);
436: hashbytes += mark;
437: }
438: (void)fflush(ttyout);
439: }
440: }
1.97 martynas 441: signal(SIGINFO, oldinti);
1.22 deraadt 442: if (hash && !progress && bytes > 0) {
443: if (bytes < mark)
444: (void)putc('#', ttyout);
445: (void)putc('\n', ttyout);
446: (void)fflush(ttyout);
447: }
448: if (len != 0) {
449: warn("Reading from file");
450: goto cleanup_url_get;
451: }
1.84 martynas 452: progressmeter(1, NULL);
1.22 deraadt 453: if (verbose)
1.97 martynas 454: ptransfer(0);
1.22 deraadt 455: (void)signal(SIGINT, oldintr);
1.42 deraadt 456:
1.40 fgsch 457: rval = 0;
458: goto cleanup_url_get;
1.22 deraadt 459: }
460:
1.28 itojun 461: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
462: (hosttail[1] == '\0' || hosttail[1] == ':')) {
463: host++;
464: *hosttail++ = '\0';
1.102 halex 465: #ifndef SMALL
466: if (asprintf(&full_host, "[%s]", host) == -1)
467: errx(1, "Cannot allocate memory for hostname");
468: #endif /* !SMALL */
1.28 itojun 469: } else
470: hosttail = host;
471:
472: portnum = strrchr(hosttail, ':'); /* find portnum */
1.1 millert 473: if (portnum != NULL)
474: *portnum++ = '\0';
475:
1.80 martynas 476: #ifndef SMALL
1.102 halex 477: if (full_host == NULL)
478: if ((full_host = strdup(host)) == NULL)
479: errx(1, "Cannot allocate memory for hostname");
1.1 millert 480: if (debug)
1.106 haesbaer 481: fprintf(ttyout, "host %s, port %s, path %s, "
482: "save as %s, auth %s.\n",
1.123 guenther 483: host, portnum, path, savefile, credentials);
1.80 martynas 484: #endif /* !SMALL */
1.1 millert 485:
1.25 itojun 486: memset(&hints, 0, sizeof(hints));
1.39 deraadt 487: hints.ai_family = family;
1.25 itojun 488: hints.ai_socktype = SOCK_STREAM;
1.61 deraadt 489: #ifndef SMALL
490: port = portnum ? portnum : (ishttpsurl ? httpsport : httpport);
1.78 martynas 491: #else /* !SMALL */
1.25 itojun 492: port = portnum ? portnum : httpport;
1.78 martynas 493: #endif /* !SMALL */
1.25 itojun 494: error = getaddrinfo(host, port, &hints, &res0);
1.61 deraadt 495: /*
496: * If the services file is corrupt/missing, fall back
497: * on our hard-coded defines.
498: */
1.30 deraadt 499: if (error == EAI_SERVICE && port == httpport) {
500: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
501: error = getaddrinfo(host, pbuf, &hints, &res0);
1.61 deraadt 502: #ifndef SMALL
503: } else if (error == EAI_SERVICE && port == httpsport) {
504: snprintf(pbuf, sizeof(pbuf), "%d", HTTPS_PORT);
505: error = getaddrinfo(host, pbuf, &hints, &res0);
1.78 martynas 506: #endif /* !SMALL */
1.30 deraadt 507: }
1.25 itojun 508: if (error) {
1.122 guenther 509: warnx("%s: %s", host, gai_strerror(error));
1.25 itojun 510: goto cleanup_url_get;
1.1 millert 511: }
512:
1.105 haesbaer 513: #ifndef SMALL
514: if (srcaddr) {
515: hints.ai_flags |= AI_NUMERICHOST;
516: error = getaddrinfo(srcaddr, NULL, &hints, &ares);
517: if (error) {
1.122 guenther 518: warnx("%s: %s", srcaddr, gai_strerror(error));
1.105 haesbaer 519: goto cleanup_url_get;
520: }
521: }
522: #endif /* !SMALL */
523:
1.25 itojun 524: s = -1;
525: for (res = res0; res; res = res->ai_next) {
1.44 itojun 526: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
527: sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
528: strlcpy(hbuf, "(unknown)", sizeof(hbuf));
1.41 deraadt 529: if (verbose)
1.44 itojun 530: fprintf(ttyout, "Trying %s...\n", hbuf);
1.14 millert 531:
1.25 itojun 532: s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
533: if (s == -1) {
534: cause = "socket";
535: continue;
1.1 millert 536: }
537:
1.105 haesbaer 538: #ifndef SMALL
539: if (srcaddr) {
540: if (ares->ai_family != res->ai_family) {
541: close(s);
542: s = -1;
543: errno = EINVAL;
544: cause = "bind";
545: continue;
546: }
547: if (bind(s, ares->ai_addr, ares->ai_addrlen) < 0) {
548: save_errno = errno;
549: close(s);
550: errno = save_errno;
551: s = -1;
552: cause = "bind";
553: continue;
554: }
555: }
556: #endif /* !SMALL */
557:
1.25 itojun 558: again:
559: if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
560: if (errno == EINTR)
561: goto again;
1.57 otto 562: save_errno = errno;
1.25 itojun 563: close(s);
1.57 otto 564: errno = save_errno;
1.25 itojun 565: s = -1;
566: cause = "connect";
1.19 deraadt 567: continue;
568: }
1.25 itojun 569:
1.29 itojun 570: /* get port in numeric */
571: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
572: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
573: port = pbuf;
574: else
575: port = NULL;
576:
1.61 deraadt 577: #ifndef SMALL
578: if (proxyenv && sslhost)
1.123 guenther 579: proxy_connect(s, sslhost, credentials);
1.78 martynas 580: #endif /* !SMALL */
1.25 itojun 581: break;
582: }
583: freeaddrinfo(res0);
1.105 haesbaer 584: #ifndef SMALL
585: if (srcaddr)
586: freeaddrinfo(ares);
587: #endif /* !SMALL */
1.25 itojun 588: if (s < 0) {
1.33 millert 589: warn("%s", cause);
1.6 millert 590: goto cleanup_url_get;
1.1 millert 591: }
592:
1.61 deraadt 593: #ifndef SMALL
594: if (ishttpsurl) {
595: if (proxyenv && sslpath) {
596: ishttpsurl = 0;
1.62 ray 597: proxyurl = NULL;
1.61 deraadt 598: path = sslpath;
599: }
1.126 jsing 600: if (ressl_init() != 0) {
601: fprintf(ttyout, "SSL initialisation failed\n");
1.116 jca 602: goto cleanup_url_get;
603: }
1.126 jsing 604: if ((ssl = ressl_client()) == NULL) {
605: fprintf(ttyout, "failed to create SSL client\n");
1.61 deraadt 606: goto cleanup_url_get;
607: }
1.126 jsing 608: if (ressl_configure(ssl, ressl_config) != 0) {
609: fprintf(ttyout, "SSL configuration failure: %s\n",
610: ressl_error(ssl));
1.61 deraadt 611: goto cleanup_url_get;
1.117 jca 612: }
1.128 jca 613: if (ressl_connect_socket(ssl, s, sslhost) != 0) {
1.126 jsing 614: fprintf(ttyout, "SSL failure: %s\n", ressl_error(ssl));
1.72 ray 615: goto cleanup_url_get;
1.118 jca 616: }
1.61 deraadt 617: } else {
618: fin = fdopen(s, "r+");
619: }
1.78 martynas 620: #else /* !SMALL */
1.40 fgsch 621: fin = fdopen(s, "r+");
1.78 martynas 622: #endif /* !SMALL */
1.40 fgsch 623:
1.55 fgsch 624: if (verbose)
625: fprintf(ttyout, "Requesting %s", origline);
1.95 martynas 626:
1.1 millert 627: /*
1.40 fgsch 628: * Construct and send the request. Proxy requests don't want leading /.
1.1 millert 629: */
1.74 pyr 630: #ifndef SMALL
631: cookie_get(host, path, ishttpsurl, &buf);
1.78 martynas 632: #endif /* !SMALL */
1.95 martynas 633:
634: epath = url_encode(path);
1.62 ray 635: if (proxyurl) {
1.55 fgsch 636: if (verbose)
1.81 espie 637: fprintf(ttyout, " (via %s)\n", proxyurl);
1.32 itojun 638: /*
639: * Host: directive must use the destination host address for
640: * the original URI (path). We do not attach it at this moment.
641: */
1.123 guenther 642: if (credentials)
1.73 drahn 643: ftp_printf(fin, ssl, "GET %s HTTP/1.0\r\n"
1.74 pyr 644: "Proxy-Authorization: Basic %s%s\r\n%s\r\n\r\n",
1.123 guenther 645: epath, credentials, buf ? buf : "",
1.124 lteo 646: httpuseragent);
1.73 drahn 647: else
1.74 pyr 648: ftp_printf(fin, ssl, "GET %s HTTP/1.0\r\n%s%s\r\n\r\n",
1.124 lteo 649: epath, buf ? buf : "", httpuseragent);
1.73 drahn 650:
1.28 itojun 651: } else {
1.90 martynas 652: #ifndef SMALL
653: if (resume) {
654: struct stat stbuf;
655:
656: if (stat(savefile, &stbuf) == 0)
657: restart_point = stbuf.st_size;
658: else
659: restart_point = 0;
660: }
1.123 guenther 661: if (credentials) {
1.106 haesbaer 662: ftp_printf(fin, ssl,
663: "GET /%s %s\r\nAuthorization: Basic %s\r\nHost: ",
664: epath, restart_point ?
665: "HTTP/1.1\r\nConnection: close" : "HTTP/1.0",
1.123 guenther 666: credentials);
667: free(credentials);
668: credentials = NULL;
1.106 haesbaer 669: } else
670: #endif /* SMALL */
1.107 haesbaer 671: ftp_printf(fin, ssl, "GET /%s %s\r\nHost: ", epath,
672: #ifndef SMALL
673: restart_point ? "HTTP/1.1\r\nConnection: close" :
674: #endif /* !SMALL */
675: "HTTP/1.0");
1.32 itojun 676: if (strchr(host, ':')) {
1.55 fgsch 677: /*
678: * strip off scoped address portion, since it's
679: * local to node
680: */
1.32 itojun 681: h = strdup(host);
682: if (h == NULL)
683: errx(1, "Can't allocate memory.");
684: if ((p = strchr(h, '%')) != NULL)
685: *p = '\0';
1.61 deraadt 686: ftp_printf(fin, ssl, "[%s]", h);
1.32 itojun 687: free(h);
1.55 fgsch 688: } else
1.61 deraadt 689: ftp_printf(fin, ssl, "%s", host);
1.55 fgsch 690:
691: /*
692: * Send port number only if it's specified and does not equal
693: * 80. Some broken HTTP servers get confused if you explicitly
694: * send them the port number.
695: */
1.61 deraadt 696: #ifndef SMALL
697: if (port && strcmp(port, (ishttpsurl ? "443" : "80")) != 0)
698: ftp_printf(fin, ssl, ":%s", port);
1.90 martynas 699: if (restart_point)
1.75 martynas 700: ftp_printf(fin, ssl, "\r\nRange: bytes=%lld-",
701: (long long)restart_point);
1.78 martynas 702: #else /* !SMALL */
1.55 fgsch 703: if (port && strcmp(port, "80") != 0)
1.61 deraadt 704: ftp_printf(fin, ssl, ":%s", port);
1.78 martynas 705: #endif /* !SMALL */
1.74 pyr 706: ftp_printf(fin, ssl, "\r\n%s%s\r\n\r\n",
1.124 lteo 707: buf ? buf : "", httpuseragent);
1.55 fgsch 708: if (verbose)
709: fprintf(ttyout, "\n");
1.28 itojun 710: }
1.95 martynas 711: free(epath);
1.74 pyr 712:
713: #ifndef SMALL
714: free(buf);
1.78 martynas 715: #endif /* !SMALL */
1.74 pyr 716: buf = NULL;
717:
1.61 deraadt 718: if (fin != NULL && fflush(fin) == EOF) {
1.14 millert 719: warn("Writing HTTP request");
1.6 millert 720: goto cleanup_url_get;
1.1 millert 721: }
1.61 deraadt 722: if ((buf = ftp_readline(fin, ssl, &len)) == NULL) {
1.40 fgsch 723: warn("Receiving HTTP reply");
724: goto cleanup_url_get;
1.1 millert 725: }
1.40 fgsch 726:
727: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
728: buf[--len] = '\0';
1.80 martynas 729: #ifndef SMALL
1.40 fgsch 730: if (debug)
731: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 732: #endif /* !SMALL */
1.40 fgsch 733:
1.1 millert 734: cp = strchr(buf, ' ');
735: if (cp == NULL)
736: goto improper;
737: else
738: cp++;
1.69 jsg 739:
740: strlcpy(ststr, cp, sizeof(ststr));
1.75 martynas 741: status = strtonum(ststr, 200, 416, &errstr);
1.69 jsg 742: if (errstr) {
743: warnx("Error retrieving file: %s", cp);
744: goto cleanup_url_get;
745: }
746:
747: switch (status) {
748: case 200: /* OK */
1.75 martynas 749: #ifndef SMALL
1.109 sthen 750: /*
1.98 phessler 751: * When we request a partial file, and we receive an HTTP 200
752: * it is a good indication that the server doesn't support
753: * range requests, and is about to send us the entire file.
754: * If the restart_point == 0, then we are not actually
755: * requesting a partial file, and an HTTP 200 is appropriate.
756: */
757: if (resume && restart_point != 0) {
758: warnx("Server does not support resume.");
759: restart_point = resume = 0;
760: }
1.101 halex 761: /* FALLTHROUGH */
1.75 martynas 762: case 206: /* Partial Content */
1.91 halex 763: #endif /* !SMALL */
1.69 jsg 764: break;
765: case 301: /* Moved Permanently */
766: case 302: /* Found */
767: case 303: /* See Other */
768: case 307: /* Temporary Redirect */
1.40 fgsch 769: isredirect++;
1.54 fgsch 770: if (redirect_loop++ > 10) {
771: warnx("Too many redirections requested");
772: goto cleanup_url_get;
773: }
1.69 jsg 774: break;
1.75 martynas 775: #ifndef SMALL
776: case 416: /* Requested Range Not Satisfiable */
777: warnx("File is already fully retrieved.");
778: goto cleanup_url_get;
1.78 martynas 779: #endif /* !SMALL */
1.69 jsg 780: default:
1.1 millert 781: warnx("Error retrieving file: %s", cp);
1.6 millert 782: goto cleanup_url_get;
1.1 millert 783: }
784:
785: /*
786: * Read the rest of the header.
787: */
1.40 fgsch 788: free(buf);
789: filesize = -1;
790:
1.62 ray 791: for (;;) {
1.61 deraadt 792: if ((buf = ftp_readline(fin, ssl, &len)) == NULL) {
1.40 fgsch 793: warn("Receiving HTTP reply");
794: goto cleanup_url_get;
795: }
1.61 deraadt 796:
1.40 fgsch 797: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
798: buf[--len] = '\0';
799: if (len == 0)
1.1 millert 800: break;
1.80 martynas 801: #ifndef SMALL
1.40 fgsch 802: if (debug)
803: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 804: #endif /* !SMALL */
1.1 millert 805:
1.40 fgsch 806: /* Look for some headers */
807: cp = buf;
1.1 millert 808: #define CONTENTLEN "Content-Length: "
1.40 fgsch 809: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
1.104 sthen 810: size_t s;
1.40 fgsch 811: cp += sizeof(CONTENTLEN) - 1;
1.111 deraadt 812: if ((s = strcspn(cp, " \t")))
1.104 sthen 813: *(cp+s) = 0;
1.58 grunk 814: filesize = strtonum(cp, 0, LLONG_MAX, &errstr);
815: if (errstr != NULL)
1.40 fgsch 816: goto improper;
1.75 martynas 817: #ifndef SMALL
1.90 martynas 818: if (restart_point)
1.75 martynas 819: filesize += restart_point;
1.78 martynas 820: #endif /* !SMALL */
1.40 fgsch 821: #define LOCATION "Location: "
822: } else if (isredirect &&
823: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
824: cp += sizeof(LOCATION) - 1;
1.102 halex 825: if (strstr(cp, "://") == NULL) {
826: #ifdef SMALL
827: errx(1, "Relative redirect not supported");
828: #else /* SMALL */
829: if (*cp == '/') {
830: locbase = NULL;
831: cp++;
832: } else {
833: locbase = strdup(path);
834: if (locbase == NULL)
835: errx(1, "Can't allocate memory"
836: " for location base");
837: loctail = strchr(locbase, '#');
838: if (loctail != NULL)
839: *loctail = '\0';
840: loctail = strchr(locbase, '?');
841: if (loctail != NULL)
842: *loctail = '\0';
843: loctail = strrchr(locbase, '/');
844: if (loctail == NULL) {
845: free(locbase);
846: locbase = NULL;
847: } else
848: loctail[1] = '\0';
849: }
850: /* Contruct URL from relative redirect */
851: if (asprintf(&redirurl, "%s%s%s%s/%s%s",
852: scheme, full_host,
853: portnum ? ":" : "",
854: portnum ? portnum : "",
855: locbase ? locbase : "",
856: cp) == -1)
857: errx(1, "Cannot build "
858: "redirect URL");
859: free(locbase);
860: #endif /* SMALL */
861: } else if ((redirurl = strdup(cp)) == NULL)
862: errx(1, "Cannot allocate memory for URL");
863: loctail = strchr(redirurl, '#');
864: if (loctail != NULL)
865: *loctail = '\0';
1.40 fgsch 866: if (verbose)
1.102 halex 867: fprintf(ttyout, "Redirected to %s\n", redirurl);
1.40 fgsch 868: if (fin != NULL)
869: fclose(fin);
870: else if (s != -1)
871: close(s);
1.102 halex 872: rval = url_get(redirurl, proxyenv, savefile);
873: free(redirurl);
874: goto cleanup_url_get;
1.40 fgsch 875: }
1.108 tobias 876: free(buf);
1.1 millert 877: }
878:
1.17 millert 879: /* Open the output file. */
1.100 halex 880: if (!pipeout) {
1.75 martynas 881: #ifndef SMALL
882: if (resume)
1.83 martynas 883: out = open(savefile, O_CREAT | O_WRONLY | O_APPEND,
884: 0666);
1.75 martynas 885: else
1.78 martynas 886: #endif /* !SMALL */
1.75 martynas 887: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC,
888: 0666);
1.10 deraadt 889: if (out < 0) {
890: warn("Can't open %s", savefile);
891: goto cleanup_url_get;
892: }
893: } else
1.17 millert 894: out = fileno(stdout);
1.1 millert 895:
896: /* Trap signals */
897: oldintr = NULL;
1.97 martynas 898: oldinti = NULL;
1.1 millert 899: if (setjmp(httpabort)) {
900: if (oldintr)
1.2 millert 901: (void)signal(SIGINT, oldintr);
1.97 martynas 902: if (oldinti)
903: (void)signal(SIGINFO, oldinti);
1.6 millert 904: goto cleanup_url_get;
1.1 millert 905: }
906: oldintr = signal(SIGINT, aborthttp);
907:
908: bytes = 0;
909: hashbytes = mark;
1.84 martynas 910: progressmeter(-1, path);
1.43 millert 911:
912: free(buf);
1.1 millert 913:
914: /* Finally, suck down the file. */
1.113 tedu 915: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 916: errx(1, "Can't allocate memory for transfer buffer");
1.1 millert 917: i = 0;
1.61 deraadt 918: len = 1;
1.97 martynas 919: oldinti = signal(SIGINFO, psummary);
1.61 deraadt 920: while (len > 0) {
1.113 tedu 921: len = ftp_read(fin, ssl, buf, buflen);
1.1 millert 922: bytes += len;
1.61 deraadt 923: for (cp = buf, wlen = len; wlen > 0; wlen -= i, cp += i) {
924: if ((i = write(out, cp, wlen)) == -1) {
1.1 millert 925: warn("Writing %s", savefile);
1.97 martynas 926: signal(SIGINFO, oldinti);
1.6 millert 927: goto cleanup_url_get;
1.1 millert 928: }
929: else if (i == 0)
930: break;
931: }
932: if (hash && !progress) {
933: while (bytes >= hashbytes) {
1.10 deraadt 934: (void)putc('#', ttyout);
1.1 millert 935: hashbytes += mark;
936: }
1.10 deraadt 937: (void)fflush(ttyout);
1.1 millert 938: }
939: }
1.97 martynas 940: signal(SIGINFO, oldinti);
1.1 millert 941: if (hash && !progress && bytes > 0) {
942: if (bytes < mark)
1.10 deraadt 943: (void)putc('#', ttyout);
944: (void)putc('\n', ttyout);
945: (void)fflush(ttyout);
1.1 millert 946: }
947: if (len != 0) {
948: warn("Reading from socket");
1.6 millert 949: goto cleanup_url_get;
1.1 millert 950: }
1.84 martynas 951: progressmeter(1, NULL);
1.75 martynas 952: if (
953: #ifndef SMALL
954: !resume &&
1.78 martynas 955: #endif /* !SMALL */
1.75 martynas 956: filesize != -1 && len == 0 && bytes != filesize) {
1.24 deraadt 957: if (verbose)
958: fputs("Read short file.\n", ttyout);
959: goto cleanup_url_get;
960: }
961:
1.1 millert 962: if (verbose)
1.97 martynas 963: ptransfer(0);
1.2 millert 964: (void)signal(SIGINT, oldintr);
1.1 millert 965:
1.40 fgsch 966: rval = 0;
967: goto cleanup_url_get;
1.1 millert 968:
1.14 millert 969: noftpautologin:
970: warnx(
971: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
972: goto cleanup_url_get;
973:
1.1 millert 974: improper:
1.8 millert 975: warnx("Improper response from %s", host);
1.14 millert 976:
1.6 millert 977: cleanup_url_get:
1.61 deraadt 978: #ifndef SMALL
1.126 jsing 979: if (ssl != NULL) {
980: ressl_close(ssl);
981: ressl_free(ssl);
1.61 deraadt 982: }
1.102 halex 983: free(full_host);
1.128 jca 984: free(sslhost);
1.78 martynas 985: #endif /* !SMALL */
1.40 fgsch 986: if (fin != NULL)
987: fclose(fin);
988: else if (s != -1)
1.1 millert 989: close(s);
1.67 steven 990: free(buf);
991: free(proxyurl);
1.62 ray 992: free(newline);
1.123 guenther 993: free(credentials);
1.40 fgsch 994: return (rval);
1.1 millert 995: }
996:
997: /*
998: * Abort a http retrieval
999: */
1.51 deraadt 1000: /* ARGSUSED */
1.1 millert 1001: void
1.51 deraadt 1002: aborthttp(int signo)
1.1 millert 1003: {
1004:
1005: alarmtimer(0);
1.10 deraadt 1006: fputs("\nhttp fetch aborted.\n", ttyout);
1007: (void)fflush(ttyout);
1.1 millert 1008: longjmp(httpabort, 1);
1009: }
1010:
1011: /*
1.22 deraadt 1012: * Abort a http retrieval
1013: */
1.51 deraadt 1014: /* ARGSUSED */
1.22 deraadt 1015: void
1.51 deraadt 1016: abortfile(int signo)
1.22 deraadt 1017: {
1018:
1019: alarmtimer(0);
1020: fputs("\nfile fetch aborted.\n", ttyout);
1021: (void)fflush(ttyout);
1022: longjmp(httpabort, 1);
1023: }
1024:
1025: /*
1.1 millert 1026: * Retrieve multiple files from the command line, transferring
1027: * files of the form "host:path", "ftp://host/path" using the
1028: * ftp protocol, and files of the form "http://host/path" using
1029: * the http protocol.
1.2 millert 1030: * If path has a trailing "/", then return (-1);
1.1 millert 1031: * the path will be cd-ed into and the connection remains open,
1032: * and the function will return -1 (to indicate the connection
1033: * is alive).
1034: * If an error occurs the return value will be the offset+1 in
1035: * argv[] of the file that caused a problem (i.e, argv[x]
1036: * returns x+1)
1037: * Otherwise, 0 is returned if all files retrieved successfully.
1038: */
1039: int
1.50 deraadt 1040: auto_fetch(int argc, char *argv[], char *outfile)
1.1 millert 1041: {
1042: char *xargv[5];
1.62 ray 1043: char *cp, *url, *host, *dir, *file, *portnum;
1044: char *username, *pass, *pathstart;
1.6 millert 1045: char *ftpproxy, *httpproxy;
1.14 millert 1046: int rval, xargc;
1047: volatile int argpos;
1.49 krw 1048: int dirhasglob, filehasglob, oautologin;
1.14 millert 1049: char rempath[MAXPATHLEN];
1.1 millert 1050:
1051: argpos = 0;
1052:
1053: if (setjmp(toplevel)) {
1054: if (connected)
1055: disconnect(0, NULL);
1.2 millert 1056: return (argpos + 1);
1.1 millert 1057: }
1.3 millert 1058: (void)signal(SIGINT, (sig_t)intr);
1059: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 1060:
1.45 millert 1061: if ((ftpproxy = getenv(FTP_PROXY)) != NULL && *ftpproxy == '\0')
1062: ftpproxy = NULL;
1063: if ((httpproxy = getenv(HTTP_PROXY)) != NULL && *httpproxy == '\0')
1064: httpproxy = NULL;
1.6 millert 1065:
1.1 millert 1066: /*
1067: * Loop through as long as there's files to fetch.
1068: */
1.123 guenther 1069: username = pass = NULL;
1.62 ray 1070: for (rval = 0; (rval == 0) && (argpos < argc); free(url), argpos++) {
1.1 millert 1071: if (strchr(argv[argpos], ':') == NULL)
1072: break;
1.123 guenther 1073:
1074: free(username);
1075: free(pass);
1.62 ray 1076: host = dir = file = portnum = username = pass = NULL;
1.1 millert 1077:
1078: /*
1079: * We muck with the string, so we make a copy.
1080: */
1.62 ray 1081: url = strdup(argv[argpos]);
1082: if (url == NULL)
1.1 millert 1083: errx(1, "Can't allocate memory for auto-fetch.");
1084:
1085: /*
1086: * Try HTTP URL-style arguments first.
1087: */
1.62 ray 1088: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.61 deraadt 1089: #ifndef SMALL
1090: /* even if we compiled without SSL, url_get will check */
1.62 ray 1091: strncasecmp(url, HTTPS_URL, sizeof(HTTPS_URL) -1) == 0 ||
1.78 martynas 1092: #endif /* !SMALL */
1.62 ray 1093: strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1.54 fgsch 1094: redirect_loop = 0;
1.62 ray 1095: if (url_get(url, httpproxy, outfile) == -1)
1.1 millert 1096: rval = argpos + 1;
1097: continue;
1098: }
1099:
1100: /*
1.6 millert 1101: * Try FTP URL-style arguments next. If ftpproxy is
1102: * set, use url_get() instead of standard ftp.
1103: * Finally, try host:file.
1.1 millert 1104: */
1.62 ray 1105: host = url;
1106: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 1107: char *passend, *passagain, *userend;
1.31 itojun 1108:
1.6 millert 1109: if (ftpproxy) {
1.62 ray 1110: if (url_get(url, ftpproxy, outfile) == -1)
1.6 millert 1111: rval = argpos + 1;
1112: continue;
1113: }
1.1 millert 1114: host += sizeof(FTP_URL) - 1;
1.8 millert 1115: dir = strchr(host, '/');
1.1 millert 1116:
1.8 millert 1117: /* Look for [user:pass@]host[:port] */
1.31 itojun 1118:
1119: /* check if we have "user:pass@" */
1.37 heko 1120: userend = strchr(host, ':');
1.31 itojun 1121: passend = strchr(host, '@');
1122: if (passend && userend && userend < passend &&
1123: (!dir || passend < dir)) {
1.62 ray 1124: username = host;
1.31 itojun 1125: pass = userend + 1;
1126: host = passend + 1;
1127: *userend = *passend = '\0';
1.37 heko 1128: passagain = strchr(host, '@');
1.42 deraadt 1129: if (strchr(pass, '@') != NULL ||
1.37 heko 1130: (passagain != NULL && passagain < dir)) {
1131: warnx(at_encoding_warning);
1.123 guenther 1132: username = pass = NULL;
1.37 heko 1133: goto bad_ftp_url;
1.42 deraadt 1134: }
1.31 itojun 1135:
1.77 martynas 1136: if (EMPTYSTRING(username)) {
1.11 millert 1137: bad_ftp_url:
1.31 itojun 1138: warnx("Invalid URL: %s", argv[argpos]);
1139: rval = argpos + 1;
1.123 guenther 1140: username = pass = NULL;
1.31 itojun 1141: continue;
1142: }
1.62 ray 1143: username = urldecode(username);
1.37 heko 1144: pass = urldecode(pass);
1.8 millert 1145: }
1.31 itojun 1146:
1147: #ifdef INET6
1148: /* check [host]:port, or [host] */
1149: if (host[0] == '[') {
1150: cp = strchr(host, ']');
1151: if (cp && (!dir || cp < dir)) {
1152: if (cp + 1 == dir || cp[1] == ':') {
1153: host++;
1154: *cp++ = '\0';
1155: } else
1156: cp = NULL;
1157: } else
1158: cp = host;
1.25 itojun 1159: } else
1160: cp = host;
1.31 itojun 1161: #else
1162: cp = host;
1.25 itojun 1163: #endif
1.31 itojun 1164:
1165: /* split off host[:port] if there is */
1166: if (cp) {
1167: portnum = strchr(cp, ':');
1.52 henning 1168: pathstart = strchr(cp, '/');
1169: /* : in path is not a port # indicator */
1170: if (portnum && pathstart &&
1171: pathstart < portnum)
1172: portnum = NULL;
1173:
1.31 itojun 1174: if (!portnum)
1175: ;
1176: else {
1177: if (!dir)
1178: ;
1179: else if (portnum + 1 < dir) {
1180: *portnum++ = '\0';
1181: /*
1182: * XXX should check if portnum
1183: * is decimal number
1184: */
1185: } else {
1186: /* empty portnum */
1187: goto bad_ftp_url;
1188: }
1189: }
1190: } else
1191: portnum = NULL;
1.8 millert 1192: } else { /* classic style `host:file' */
1193: dir = strchr(host, ':');
1194: }
1.1 millert 1195: if (EMPTYSTRING(host)) {
1196: rval = argpos + 1;
1197: continue;
1198: }
1199:
1200: /*
1.9 millert 1201: * If dir is NULL, the file wasn't specified
1.1 millert 1202: * (URL looked something like ftp://host)
1203: */
1.8 millert 1204: if (dir != NULL)
1205: *dir++ = '\0';
1.1 millert 1206:
1207: /*
1208: * Extract the file and (if present) directory name.
1209: */
1.42 deraadt 1210: if (!EMPTYSTRING(dir)) {
1.8 millert 1211: cp = strrchr(dir, '/');
1.1 millert 1212: if (cp != NULL) {
1213: *cp++ = '\0';
1214: file = cp;
1215: } else {
1216: file = dir;
1217: dir = NULL;
1218: }
1219: }
1.80 martynas 1220: #ifndef SMALL
1.1 millert 1221: if (debug)
1.42 deraadt 1222: fprintf(ttyout,
1223: "user %s:%s host %s port %s dir %s file %s\n",
1.76 martynas 1224: username, pass ? "XXXX" : NULL, host, portnum,
1225: dir, file);
1.80 martynas 1226: #endif /* !SMALL */
1.1 millert 1227:
1228: /*
1.49 krw 1229: * Set up the connection.
1.1 millert 1230: */
1.49 krw 1231: if (connected)
1232: disconnect(0, NULL);
1233: xargv[0] = __progname;
1234: xargv[1] = host;
1.8 millert 1235: xargv[2] = NULL;
1.49 krw 1236: xargc = 2;
1237: if (!EMPTYSTRING(portnum)) {
1238: xargv[2] = portnum;
1239: xargv[3] = NULL;
1240: xargc = 3;
1241: }
1242: oautologin = autologin;
1.88 martynas 1243: if (username == NULL)
1.89 halex 1244: anonftp = 1;
1245: else {
1246: anonftp = 0;
1.49 krw 1247: autologin = 0;
1.89 halex 1248: }
1.49 krw 1249: setpeer(xargc, xargv);
1250: autologin = oautologin;
1.87 martynas 1251: if (connected == 0 ||
1252: (connected == 1 && autologin && (username == NULL ||
1253: !ftp_login(host, username, pass)))) {
1.49 krw 1254: warnx("Can't connect or login to host `%s'", host);
1.8 millert 1255: rval = argpos + 1;
1256: continue;
1.1 millert 1257: }
1.49 krw 1258:
1259: /* Always use binary transfers. */
1260: setbinary(0, NULL);
1.1 millert 1261:
1.4 millert 1262: dirhasglob = filehasglob = 0;
1263: if (doglob) {
1.42 deraadt 1264: if (!EMPTYSTRING(dir) &&
1.4 millert 1265: strpbrk(dir, "*?[]{}") != NULL)
1266: dirhasglob = 1;
1.42 deraadt 1267: if (!EMPTYSTRING(file) &&
1.4 millert 1268: strpbrk(file, "*?[]{}") != NULL)
1269: filehasglob = 1;
1270: }
1271:
1.1 millert 1272: /* Change directories, if necessary. */
1.42 deraadt 1273: if (!EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 1274: xargv[0] = "cd";
1275: xargv[1] = dir;
1276: xargv[2] = NULL;
1277: cd(2, xargv);
1.42 deraadt 1278: if (!dirchange) {
1.1 millert 1279: rval = argpos + 1;
1280: continue;
1281: }
1282: }
1283:
1284: if (EMPTYSTRING(file)) {
1.86 martynas 1285: #ifndef SMALL
1.1 millert 1286: rval = -1;
1.86 martynas 1287: #else /* !SMALL */
1288: recvrequest("NLST", "-", NULL, "w", 0, 0);
1289: rval = 0;
1290: #endif /* !SMALL */
1.1 millert 1291: continue;
1292: }
1293:
1.21 marc 1294: if (verbose)
1.10 deraadt 1295: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 1296:
1.4 millert 1297: if (dirhasglob) {
1298: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
1299: file = rempath;
1300: }
1301:
1302: /* Fetch the file(s). */
1.10 deraadt 1303: xargc = 2;
1.1 millert 1304: xargv[0] = "get";
1305: xargv[1] = file;
1306: xargv[2] = NULL;
1.4 millert 1307: if (dirhasglob || filehasglob) {
1308: int ointeractive;
1309:
1310: ointeractive = interactive;
1311: interactive = 0;
1312: xargv[0] = "mget";
1.78 martynas 1313: #ifndef SMALL
1314: if (resume) {
1315: xargc = 3;
1316: xargv[1] = "-c";
1317: xargv[2] = file;
1318: xargv[3] = NULL;
1319: }
1320: #endif /* !SMALL */
1.10 deraadt 1321: mget(xargc, xargv);
1.5 millert 1322: interactive = ointeractive;
1.10 deraadt 1323: } else {
1.17 millert 1324: if (outfile != NULL) {
1325: xargv[2] = outfile;
1326: xargv[3] = NULL;
1.10 deraadt 1327: xargc++;
1328: }
1.75 martynas 1329: #ifndef SMALL
1330: if (resume)
1331: reget(xargc, xargv);
1332: else
1.78 martynas 1333: #endif /* !SMALL */
1.75 martynas 1334: get(xargc, xargv);
1.10 deraadt 1335: }
1.1 millert 1336:
1.4 millert 1337: if ((code / 100) != COMPLETE)
1.1 millert 1338: rval = argpos + 1;
1339: }
1340: if (connected && rval != -1)
1341: disconnect(0, NULL);
1342: return (rval);
1.37 heko 1343: }
1344:
1345: char *
1.50 deraadt 1346: urldecode(const char *str)
1.37 heko 1347: {
1.53 deraadt 1348: char *ret, c;
1349: int i, reallen;
1.37 heko 1350:
1.53 deraadt 1351: if (str == NULL)
1352: return NULL;
1353: if ((ret = malloc(strlen(str)+1)) == NULL)
1354: err(1, "Can't allocate memory for URL decoding");
1355: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
1356: c = str[i];
1357: if (c == '+') {
1358: *ret = ' ';
1359: continue;
1360: }
1.61 deraadt 1361:
1362: /* Cannot use strtol here because next char
1363: * after %xx may be a digit.
1364: */
1.53 deraadt 1365: if (c == '%' && isxdigit(str[i+1]) && isxdigit(str[i+2])) {
1366: *ret = hextochar(&str[i+1]);
1367: i+=2;
1368: continue;
1369: }
1370: *ret = c;
1371: }
1372: *ret = '\0';
1373:
1374: return ret-reallen;
1.123 guenther 1375: }
1376:
1377: char *
1378: recode_credentials(const char *userinfo)
1379: {
1380: char *ui, *creds;
1381: size_t ulen, credsize;
1382:
1383: /* url-decode the user and pass */
1384: ui = urldecode(userinfo);
1385:
1386: ulen = strlen(ui);
1387: credsize = (ulen + 2) / 3 * 4 + 1;
1388: creds = malloc(credsize);
1389: if (creds == NULL)
1390: errx(1, "out of memory");
1391: if (b64_ntop(ui, ulen, creds, credsize) == -1)
1392: errx(1, "error in base64 encoding");
1393: free(ui);
1394: return (creds);
1.37 heko 1395: }
1396:
1397: char
1.50 deraadt 1398: hextochar(const char *str)
1.37 heko 1399: {
1.53 deraadt 1400: char c, ret;
1.37 heko 1401:
1.53 deraadt 1402: c = str[0];
1403: ret = c;
1404: if (isalpha(c))
1405: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1406: else
1407: ret -= '0';
1408: ret *= 16;
1409:
1410: c = str[1];
1411: ret += c;
1412: if (isalpha(c))
1413: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1414: else
1415: ret -= '0';
1416: return ret;
1.25 itojun 1417: }
1418:
1419: int
1.50 deraadt 1420: isurl(const char *p)
1.25 itojun 1421: {
1.27 millert 1422:
1.26 deraadt 1423: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
1424: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.61 deraadt 1425: #ifndef SMALL
1426: strncasecmp(p, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0 ||
1.78 martynas 1427: #endif /* !SMALL */
1.27 millert 1428: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
1429: strstr(p, ":/"))
1430: return (1);
1431: return (0);
1.1 millert 1432: }
1.61 deraadt 1433:
1434: char *
1.126 jsing 1435: ftp_readline(FILE *fp, struct ressl *ssl, size_t *lenp)
1.61 deraadt 1436: {
1437: if (fp != NULL)
1438: return fparseln(fp, lenp, NULL, "\0\0\0", 0);
1439: #ifndef SMALL
1440: else if (ssl != NULL)
1441: return SSL_readline(ssl, lenp);
1.78 martynas 1442: #endif /* !SMALL */
1.61 deraadt 1443: else
1444: return NULL;
1445: }
1446:
1.65 ray 1447: size_t
1.126 jsing 1448: ftp_read(FILE *fp, struct ressl *ssl, char *buf, size_t len)
1.61 deraadt 1449: {
1.65 ray 1450: size_t ret;
1.61 deraadt 1451: if (fp != NULL)
1452: ret = fread(buf, sizeof(char), len, fp);
1453: #ifndef SMALL
1.65 ray 1454: else if (ssl != NULL) {
1.126 jsing 1455: size_t nr;
1.65 ray 1456:
1.126 jsing 1457: if ((ret = ressl_read(ssl, buf, len, &nr)) != 0)
1.65 ray 1458: ret = 0;
1459: else
1460: ret = nr;
1461: }
1.78 martynas 1462: #endif /* !SMALL */
1.61 deraadt 1463: else
1464: ret = 0;
1465: return (ret);
1466: }
1467:
1468: int
1.126 jsing 1469: ftp_printf(FILE *fp, struct ressl *ssl, const char *fmt, ...)
1.61 deraadt 1470: {
1471: int ret;
1472: va_list ap;
1473:
1474: va_start(ap, fmt);
1475:
1476: if (fp != NULL)
1477: ret = vfprintf(fp, fmt, ap);
1478: #ifndef SMALL
1479: else if (ssl != NULL)
1.126 jsing 1480: ret = SSL_vprintf(ssl, fmt, ap);
1.78 martynas 1481: #endif /* !SMALL */
1.61 deraadt 1482: else
1.92 jsg 1483: ret = 0;
1.61 deraadt 1484:
1485: va_end(ap);
1486: return (ret);
1487: }
1488:
1489: #ifndef SMALL
1490: int
1.126 jsing 1491: SSL_vprintf(struct ressl *ssl, const char *fmt, va_list ap)
1.61 deraadt 1492: {
1.126 jsing 1493: char *string;
1494: size_t nw;
1.61 deraadt 1495: int ret;
1496:
1497: if ((ret = vasprintf(&string, fmt, ap)) == -1)
1498: return ret;
1.126 jsing 1499: ret = ressl_write(ssl, string, ret, &nw);
1.61 deraadt 1500: free(string);
1501: return ret;
1502: }
1503:
1504: char *
1.126 jsing 1505: SSL_readline(struct ressl *ssl, size_t *lenp)
1.61 deraadt 1506: {
1.126 jsing 1507: size_t i, len, nr;
1.61 deraadt 1508: char *buf, *q, c;
1.109 sthen 1509: int ret;
1.61 deraadt 1510:
1511: len = 128;
1512: if ((buf = malloc(len)) == NULL)
1513: errx(1, "Can't allocate memory for transfer buffer");
1514: for (i = 0; ; i++) {
1515: if (i >= len - 1) {
1516: if ((q = realloc(buf, 2 * len)) == NULL)
1517: errx(1, "Can't expand transfer buffer");
1518: buf = q;
1519: len *= 2;
1520: }
1.109 sthen 1521: again:
1.126 jsing 1522: ret = ressl_read(ssl, &c, 1, &nr);
1523: if (ret == -2)
1524: goto again;
1525: if (ret != 0)
1526: errx(1, "SSL read error: %u", ret);
1527:
1.61 deraadt 1528: buf[i] = c;
1529: if (c == '\n')
1530: break;
1531: }
1532: *lenp = i;
1533: return (buf);
1534: }
1535:
1536: int
1.81 espie 1537: proxy_connect(int socket, char *host, char *cookie)
1.61 deraadt 1538: {
1.66 ray 1539: int l;
1.61 deraadt 1540: char buf[1024];
1541: char *connstr, *hosttail, *port;
1542:
1543: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
1544: (hosttail[1] == '\0' || hosttail[1] == ':')) {
1545: host++;
1546: *hosttail++ = '\0';
1547: } else
1548: hosttail = host;
1549:
1550: port = strrchr(hosttail, ':'); /* find portnum */
1551: if (port != NULL)
1552: *port++ = '\0';
1553: if (!port)
1554: port = "443";
1555:
1.81 espie 1556: if (cookie) {
1557: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n"
1558: "Proxy-Authorization: Basic %s\r\n%s\r\n\r\n",
1559: host, port, cookie, HTTP_USER_AGENT);
1560: } else {
1561: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n%s\r\n\r\n",
1562: host, port, HTTP_USER_AGENT);
1563: }
1564:
1.66 ray 1565: if (l == -1)
1.61 deraadt 1566: errx(1, "Could not allocate memory to assemble connect string!");
1.80 martynas 1567: #ifndef SMALL
1.68 ray 1568: if (debug)
1569: printf("%s", connstr);
1.80 martynas 1570: #endif /* !SMALL */
1.66 ray 1571: if (write(socket, connstr, l) != l)
1.68 ray 1572: err(1, "Could not send connect string");
1.61 deraadt 1573: read(socket, &buf, sizeof(buf)); /* only proxy header XXX: error handling? */
1.71 ray 1574: free(connstr);
1.61 deraadt 1575: return(200);
1576: }
1.78 martynas 1577: #endif /* !SMALL */
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