Annotation of src/usr.bin/ftp/fetch.c, Revision 1.151
1.151 ! millert 1: /* $OpenBSD: fetch.c,v 1.150 2016/12/08 19:31:17 millert 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>
1.1 millert 52: #include <stdio.h>
1.61 deraadt 53: #include <stdarg.h>
1.19 deraadt 54: #include <errno.h>
1.1 millert 55: #include <stdlib.h>
56: #include <string.h>
57: #include <unistd.h>
1.40 fgsch 58: #include <util.h>
1.73 drahn 59: #include <resolv.h>
1.1 millert 60:
1.61 deraadt 61: #ifndef SMALL
1.134 jsing 62: #include <tls.h>
1.78 martynas 63: #else /* !SMALL */
1.134 jsing 64: struct tls;
1.78 martynas 65: #endif /* !SMALL */
1.61 deraadt 66:
1.1 millert 67: #include "ftp_var.h"
1.86 martynas 68: #include "cmds.h"
1.1 millert 69:
1.38 millert 70: static int url_get(const char *, const char *, const char *);
71: void aborthttp(int);
72: void abortfile(int);
1.42 deraadt 73: char hextochar(const char *);
74: char *urldecode(const char *);
1.123 guenther 75: char *recode_credentials(const char *_userinfo);
1.134 jsing 76: int ftp_printf(FILE *, struct tls *, const char *, ...) __attribute__((format(printf, 3, 4)));
77: char *ftp_readline(FILE *, struct tls *, size_t *);
78: size_t ftp_read(FILE *, struct tls *, char *, size_t);
1.61 deraadt 79: #ifndef SMALL
1.81 espie 80: int proxy_connect(int, char *, char *);
1.134 jsing 81: int SSL_vprintf(struct tls *, const char *, va_list);
82: char *SSL_readline(struct tls *, size_t *);
1.78 martynas 83: #endif /* !SMALL */
1.14 millert 84:
1.1 millert 85: #define FTP_URL "ftp://" /* ftp URL prefix */
86: #define HTTP_URL "http://" /* http URL prefix */
1.61 deraadt 87: #define HTTPS_URL "https://" /* https URL prefix */
1.22 deraadt 88: #define FILE_URL "file:" /* file URL prefix */
1.6 millert 89: #define FTP_PROXY "ftp_proxy" /* env var with ftp proxy location */
1.1 millert 90: #define HTTP_PROXY "http_proxy" /* env var with http proxy location */
91:
92: #define EMPTYSTRING(x) ((x) == NULL || (*(x) == '\0'))
93:
1.110 guenther 94: static const char at_encoding_warning[] =
1.53 deraadt 95: "Extra `@' characters in usernames and passwords should be encoded as %%40";
1.37 heko 96:
1.1 millert 97: jmp_buf httpabort;
98:
1.54 fgsch 99: static int redirect_loop;
100:
1.1 millert 101: /*
1.95 martynas 102: * Determine whether the character needs encoding, per RFC1738:
103: * - No corresponding graphic US-ASCII.
104: * - Unsafe characters.
105: */
106: static int
1.138 jca 107: unsafe_char(const char *c0)
1.95 martynas 108: {
109: const char *unsafe_chars = " <>\"#{}|\\^~[]`";
1.138 jca 110: const unsigned char *c = (const unsigned char *)c0;
1.95 martynas 111:
112: /*
113: * No corresponding graphic US-ASCII.
114: * Control characters and octets not used in US-ASCII.
115: */
116: return (iscntrl(*c) || !isascii(*c) ||
117:
118: /*
119: * Unsafe characters.
120: * '%' is also unsafe, if is not followed by two
121: * hexadecimal digits.
122: */
123: strchr(unsafe_chars, *c) != NULL ||
124: (*c == '%' && (!isxdigit(*++c) || !isxdigit(*++c))));
125: }
126:
127: /*
128: * Encode given URL, per RFC1738.
129: * Allocate and return string to the caller.
130: */
131: static char *
132: url_encode(const char *path)
133: {
134: size_t i, length, new_length;
135: char *epath, *epathp;
136:
137: length = new_length = strlen(path);
138:
139: /*
140: * First pass:
141: * Count unsafe characters, and determine length of the
142: * final URL.
143: */
144: for (i = 0; i < length; i++)
145: if (unsafe_char(path + i))
146: new_length += 2;
147:
148: epath = epathp = malloc(new_length + 1); /* One more for '\0'. */
149: if (epath == NULL)
1.102 halex 150: err(1, "Can't allocate memory for URL encoding");
1.95 martynas 151:
152: /*
153: * Second pass:
154: * Encode, and copy final URL.
155: */
156: for (i = 0; i < length; i++)
157: if (unsafe_char(path + i)) {
1.138 jca 158: snprintf(epathp, 4, "%%" "%02x",
159: (unsigned char)path[i]);
1.95 martynas 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;
1.136 bluhm 190: char *proxyhost = NULL;
1.61 deraadt 191: #ifndef SMALL
192: char *sslpath = NULL, *sslhost = NULL;
1.123 guenther 193: char *locbase, *full_host = NULL;
1.102 halex 194: const char *scheme;
1.123 guenther 195: int ishttpurl = 0, ishttpsurl = 0;
1.78 martynas 196: #endif /* !SMALL */
1.134 jsing 197: struct tls *tls = NULL;
1.70 deraadt 198: int status;
1.105 haesbaer 199: int save_errno;
1.113 tedu 200: const size_t buflen = 128 * 1024;
1.14 millert 201:
1.97 martynas 202: direction = "received";
203:
1.62 ray 204: newline = strdup(origline);
205: if (newline == NULL)
1.14 millert 206: errx(1, "Can't allocate memory to parse URL");
1.102 halex 207: if (strncasecmp(newline, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
1.62 ray 208: host = newline + sizeof(HTTP_URL) - 1;
1.102 halex 209: #ifndef SMALL
1.123 guenther 210: ishttpurl = 1;
1.102 halex 211: scheme = HTTP_URL;
212: #endif /* !SMALL */
213: } else if (strncasecmp(newline, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.62 ray 214: host = newline + sizeof(FTP_URL) - 1;
1.14 millert 215: isftpurl = 1;
1.102 halex 216: #ifndef SMALL
217: scheme = FTP_URL;
218: #endif /* !SMALL */
1.62 ray 219: } else if (strncasecmp(newline, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
220: host = newline + sizeof(FILE_URL) - 1;
1.22 deraadt 221: isfileurl = 1;
1.61 deraadt 222: #ifndef SMALL
1.102 halex 223: scheme = FILE_URL;
1.62 ray 224: } else if (strncasecmp(newline, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0) {
225: host = newline + sizeof(HTTPS_URL) - 1;
1.61 deraadt 226: ishttpsurl = 1;
1.102 halex 227: scheme = HTTPS_URL;
1.78 martynas 228: #endif /* !SMALL */
1.14 millert 229: } else
1.62 ray 230: errx(1, "url_get: Invalid URL '%s'", newline);
1.6 millert 231:
1.22 deraadt 232: if (isfileurl) {
233: path = host;
234: } else {
1.93 martynas 235: path = strchr(host, '/'); /* Find path */
1.22 deraadt 236: if (EMPTYSTRING(path)) {
1.93 martynas 237: if (outfile) { /* No slash, but */
238: path=strchr(host,'\0'); /* we have outfile. */
239: goto noslash;
240: }
1.22 deraadt 241: if (isftpurl)
242: goto noftpautologin;
1.94 martynas 243: warnx("No `/' after host (use -o): %s", origline);
1.22 deraadt 244: goto cleanup_url_get;
245: }
246: *path++ = '\0';
1.93 martynas 247: if (EMPTYSTRING(path) && !outfile) {
1.22 deraadt 248: if (isftpurl)
249: goto noftpautologin;
1.94 martynas 250: warnx("No filename after host (use -o): %s", origline);
1.22 deraadt 251: goto cleanup_url_get;
252: }
1.14 millert 253: }
1.1 millert 254:
1.93 martynas 255: noslash:
1.106 haesbaer 256:
257: #ifndef SMALL
258: /*
259: * Look for auth header in host, since now host does not
260: * contain the path. Basic auth from RFC 2617, valid
261: * characters for path are in RFC 3986 section 3.3.
262: */
1.123 guenther 263: if (proxyenv == NULL && (ishttpurl || ishttpsurl)) {
1.106 haesbaer 264: if ((p = strchr(host, '@')) != NULL) {
1.123 guenther 265: *p = '\0';
266: credentials = recode_credentials(host);
1.106 haesbaer 267: host = p + 1;
268: }
269: }
270: #endif /* SMALL */
271:
1.17 millert 272: if (outfile)
273: savefile = outfile;
1.93 martynas 274: else {
275: if (path[strlen(path) - 1] == '/') /* Consider no file */
276: savefile = NULL; /* after dir invalid. */
277: else
278: savefile = basename(path);
1.75 martynas 279: }
280:
1.14 millert 281: if (EMPTYSTRING(savefile)) {
282: if (isftpurl)
283: goto noftpautologin;
1.94 martynas 284: warnx("No filename after directory (use -o): %s", origline);
1.6 millert 285: goto cleanup_url_get;
1.14 millert 286: }
1.1 millert 287:
1.93 martynas 288: #ifndef SMALL
1.100 halex 289: if (resume && pipeout) {
1.93 martynas 290: warnx("can't append to stdout");
291: goto cleanup_url_get;
292: }
293: #endif /* !SMALL */
294:
1.59 uwe 295: if (!isfileurl && proxyenv != NULL) { /* use proxy */
1.61 deraadt 296: #ifndef SMALL
297: if (ishttpsurl) {
298: sslpath = strdup(path);
299: sslhost = strdup(host);
300: if (! sslpath || ! sslhost)
301: errx(1, "Can't allocate memory for https path/host.");
302: }
1.78 martynas 303: #endif /* !SMALL */
1.136 bluhm 304: proxyhost = strdup(host);
305: if (proxyhost == NULL)
306: errx(1, "Can't allocate memory for proxy host.");
1.62 ray 307: proxyurl = strdup(proxyenv);
308: if (proxyurl == NULL)
1.14 millert 309: errx(1, "Can't allocate memory for proxy URL.");
1.62 ray 310: if (strncasecmp(proxyurl, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
311: host = proxyurl + sizeof(HTTP_URL) - 1;
312: else if (strncasecmp(proxyurl, FTP_URL, sizeof(FTP_URL) - 1) == 0)
313: host = proxyurl + sizeof(FTP_URL) - 1;
1.6 millert 314: else {
1.14 millert 315: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 316: goto cleanup_url_get;
317: }
1.14 millert 318: if (EMPTYSTRING(host)) {
319: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 320: goto cleanup_url_get;
1.14 millert 321: }
1.93 martynas 322: if (*--path == '\0')
323: *path = '/'; /* add / back to real path */
1.1 millert 324: path = strchr(host, '/'); /* remove trailing / on host */
1.42 deraadt 325: if (!EMPTYSTRING(path))
1.73 drahn 326: *path++ = '\0'; /* i guess this ++ is useless */
327:
328: path = strchr(host, '@'); /* look for credentials in proxy */
329: if (!EMPTYSTRING(path)) {
1.81 espie 330: *path = '\0';
1.123 guenther 331: if (strchr(host, ':') == NULL) {
1.73 drahn 332: warnx("Malformed proxy URL: %s", proxyenv);
333: goto cleanup_url_get;
334: }
1.123 guenther 335: credentials = recode_credentials(host);
1.81 espie 336: *path = '@'; /* restore @ in proxyurl */
1.123 guenther 337:
1.73 drahn 338: /*
1.81 espie 339: * This removes the password from proxyurl,
1.73 drahn 340: * filling with stars
341: */
1.81 espie 342: for (host = 1 + strchr(proxyurl + 5, ':'); *host != '@';
1.73 drahn 343: host++)
344: *host = '*';
345:
1.81 espie 346: host = path + 1;
1.73 drahn 347: }
1.123 guenther 348:
1.62 ray 349: path = newline;
1.1 millert 350: }
351:
1.22 deraadt 352: if (isfileurl) {
353: struct stat st;
354:
355: s = open(path, O_RDONLY);
356: if (s == -1) {
357: warn("Can't open file %s", path);
358: goto cleanup_url_get;
359: }
360:
361: if (fstat(s, &st) == -1)
362: filesize = -1;
363: else
364: filesize = st.st_size;
365:
1.83 martynas 366: /* Open the output file. */
1.100 halex 367: if (!pipeout) {
1.75 martynas 368: #ifndef SMALL
369: if (resume)
1.82 deraadt 370: out = open(savefile, O_CREAT | O_WRONLY |
371: O_APPEND, 0666);
372:
1.75 martynas 373: else
1.78 martynas 374: #endif /* !SMALL */
1.75 martynas 375: out = open(savefile, O_CREAT | O_WRONLY |
376: O_TRUNC, 0666);
1.22 deraadt 377: if (out < 0) {
378: warn("Can't open %s", savefile);
379: goto cleanup_url_get;
380: }
381: } else
382: out = fileno(stdout);
383:
1.75 martynas 384: #ifndef SMALL
385: if (resume) {
386: if (fstat(out, &st) == -1) {
387: warn("Can't fstat %s", savefile);
388: goto cleanup_url_get;
389: }
390: if (lseek(s, st.st_size, SEEK_SET) == -1) {
391: warn("Can't lseek %s", path);
392: goto cleanup_url_get;
393: }
394: restart_point = st.st_size;
395: }
1.78 martynas 396: #endif /* !SMALL */
1.75 martynas 397:
1.22 deraadt 398: /* Trap signals */
399: oldintr = NULL;
1.97 martynas 400: oldinti = NULL;
1.22 deraadt 401: if (setjmp(httpabort)) {
402: if (oldintr)
403: (void)signal(SIGINT, oldintr);
1.97 martynas 404: if (oldinti)
405: (void)signal(SIGINFO, oldinti);
1.22 deraadt 406: goto cleanup_url_get;
407: }
408: oldintr = signal(SIGINT, abortfile);
1.42 deraadt 409:
1.22 deraadt 410: bytes = 0;
411: hashbytes = mark;
1.84 martynas 412: progressmeter(-1, path);
1.40 fgsch 413:
1.113 tedu 414: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 415: errx(1, "Can't allocate memory for transfer buffer");
1.42 deraadt 416:
1.22 deraadt 417: /* Finally, suck down the file. */
418: i = 0;
1.97 martynas 419: oldinti = signal(SIGINFO, psummary);
1.113 tedu 420: while ((len = read(s, buf, buflen)) > 0) {
1.22 deraadt 421: bytes += len;
422: for (cp = buf; len > 0; len -= i, cp += i) {
423: if ((i = write(out, cp, len)) == -1) {
424: warn("Writing %s", savefile);
1.97 martynas 425: signal(SIGINFO, oldinti);
1.22 deraadt 426: goto cleanup_url_get;
427: }
428: else if (i == 0)
429: break;
430: }
431: if (hash && !progress) {
432: while (bytes >= hashbytes) {
433: (void)putc('#', ttyout);
434: hashbytes += mark;
435: }
436: (void)fflush(ttyout);
437: }
438: }
1.97 martynas 439: signal(SIGINFO, oldinti);
1.22 deraadt 440: if (hash && !progress && bytes > 0) {
441: if (bytes < mark)
442: (void)putc('#', ttyout);
443: (void)putc('\n', ttyout);
444: (void)fflush(ttyout);
445: }
446: if (len != 0) {
447: warn("Reading from file");
448: goto cleanup_url_get;
449: }
1.84 martynas 450: progressmeter(1, NULL);
1.22 deraadt 451: if (verbose)
1.97 martynas 452: ptransfer(0);
1.22 deraadt 453: (void)signal(SIGINT, oldintr);
1.42 deraadt 454:
1.40 fgsch 455: rval = 0;
456: goto cleanup_url_get;
1.22 deraadt 457: }
458:
1.28 itojun 459: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
460: (hosttail[1] == '\0' || hosttail[1] == ':')) {
461: host++;
462: *hosttail++ = '\0';
1.102 halex 463: #ifndef SMALL
464: if (asprintf(&full_host, "[%s]", host) == -1)
465: errx(1, "Cannot allocate memory for hostname");
466: #endif /* !SMALL */
1.28 itojun 467: } else
468: hosttail = host;
469:
470: portnum = strrchr(hosttail, ':'); /* find portnum */
1.1 millert 471: if (portnum != NULL)
472: *portnum++ = '\0';
1.150 millert 473: #ifndef SMALL
474: port = portnum ? portnum : (ishttpsurl ? httpsport : httpport);
475: #else /* !SMALL */
476: port = portnum ? portnum : httpport;
477: #endif /* !SMALL */
1.1 millert 478:
1.80 martynas 479: #ifndef SMALL
1.102 halex 480: if (full_host == NULL)
481: if ((full_host = strdup(host)) == NULL)
482: errx(1, "Cannot allocate memory for hostname");
1.1 millert 483: if (debug)
1.106 haesbaer 484: fprintf(ttyout, "host %s, port %s, path %s, "
1.150 millert 485: "save as %s, auth %s.\n", host, port, path,
486: savefile, credentials ? credentials : "none");
1.80 martynas 487: #endif /* !SMALL */
1.1 millert 488:
1.25 itojun 489: memset(&hints, 0, sizeof(hints));
1.39 deraadt 490: hints.ai_family = family;
1.25 itojun 491: hints.ai_socktype = SOCK_STREAM;
492: error = getaddrinfo(host, port, &hints, &res0);
1.61 deraadt 493: /*
494: * If the services file is corrupt/missing, fall back
495: * on our hard-coded defines.
496: */
1.30 deraadt 497: if (error == EAI_SERVICE && port == httpport) {
498: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
499: error = getaddrinfo(host, pbuf, &hints, &res0);
1.61 deraadt 500: #ifndef SMALL
501: } else if (error == EAI_SERVICE && port == httpsport) {
502: snprintf(pbuf, sizeof(pbuf), "%d", HTTPS_PORT);
503: error = getaddrinfo(host, pbuf, &hints, &res0);
1.78 martynas 504: #endif /* !SMALL */
1.30 deraadt 505: }
1.25 itojun 506: if (error) {
1.122 guenther 507: warnx("%s: %s", host, gai_strerror(error));
1.25 itojun 508: goto cleanup_url_get;
1.1 millert 509: }
510:
1.105 haesbaer 511: #ifndef SMALL
512: if (srcaddr) {
513: hints.ai_flags |= AI_NUMERICHOST;
514: error = getaddrinfo(srcaddr, NULL, &hints, &ares);
515: if (error) {
1.122 guenther 516: warnx("%s: %s", srcaddr, gai_strerror(error));
1.105 haesbaer 517: goto cleanup_url_get;
518: }
519: }
520: #endif /* !SMALL */
1.135 deraadt 521:
522: /* ensure consistent order of the output */
523: if (verbose)
524: setvbuf(ttyout, NULL, _IOLBF, 0);
1.105 haesbaer 525:
1.25 itojun 526: s = -1;
527: for (res = res0; res; res = res->ai_next) {
1.44 itojun 528: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
529: sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
530: strlcpy(hbuf, "(unknown)", sizeof(hbuf));
1.41 deraadt 531: if (verbose)
1.44 itojun 532: fprintf(ttyout, "Trying %s...\n", hbuf);
1.14 millert 533:
1.25 itojun 534: s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
535: if (s == -1) {
536: cause = "socket";
537: continue;
1.1 millert 538: }
539:
1.105 haesbaer 540: #ifndef SMALL
541: if (srcaddr) {
542: if (ares->ai_family != res->ai_family) {
543: close(s);
544: s = -1;
545: errno = EINVAL;
546: cause = "bind";
547: continue;
548: }
549: if (bind(s, ares->ai_addr, ares->ai_addrlen) < 0) {
550: save_errno = errno;
551: close(s);
552: errno = save_errno;
553: s = -1;
554: cause = "bind";
555: continue;
556: }
557: }
558: #endif /* !SMALL */
559:
1.149 millert 560: for (error = connect(s, res->ai_addr, res->ai_addrlen);
561: error != 0 && errno == EINTR; error = connect_wait(s))
562: continue;
563: if (error != 0) {
1.57 otto 564: save_errno = errno;
1.25 itojun 565: close(s);
1.57 otto 566: errno = save_errno;
1.25 itojun 567: s = -1;
568: cause = "connect";
1.19 deraadt 569: continue;
570: }
1.25 itojun 571:
1.29 itojun 572: /* get port in numeric */
573: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
574: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
575: port = pbuf;
576: else
577: port = NULL;
578:
1.61 deraadt 579: #ifndef SMALL
580: if (proxyenv && sslhost)
1.123 guenther 581: proxy_connect(s, sslhost, credentials);
1.78 martynas 582: #endif /* !SMALL */
1.25 itojun 583: break;
584: }
585: freeaddrinfo(res0);
1.105 haesbaer 586: #ifndef SMALL
587: if (srcaddr)
588: freeaddrinfo(ares);
589: #endif /* !SMALL */
1.25 itojun 590: if (s < 0) {
1.33 millert 591: warn("%s", cause);
1.6 millert 592: goto cleanup_url_get;
1.1 millert 593: }
594:
1.61 deraadt 595: #ifndef SMALL
596: if (ishttpsurl) {
597: if (proxyenv && sslpath) {
598: ishttpsurl = 0;
1.62 ray 599: proxyurl = NULL;
1.61 deraadt 600: path = sslpath;
601: }
1.131 jca 602: if (sslhost == NULL) {
603: sslhost = strdup(host);
604: if (sslhost == NULL)
605: errx(1, "Can't allocate memory for https host.");
1.116 jca 606: }
1.134 jsing 607: if ((tls = tls_client()) == NULL) {
1.126 jsing 608: fprintf(ttyout, "failed to create SSL client\n");
1.61 deraadt 609: goto cleanup_url_get;
610: }
1.134 jsing 611: if (tls_configure(tls, tls_config) != 0) {
1.126 jsing 612: fprintf(ttyout, "SSL configuration failure: %s\n",
1.134 jsing 613: tls_error(tls));
1.61 deraadt 614: goto cleanup_url_get;
1.117 jca 615: }
1.134 jsing 616: if (tls_connect_socket(tls, s, sslhost) != 0) {
617: fprintf(ttyout, "SSL failure: %s\n", tls_error(tls));
1.72 ray 618: goto cleanup_url_get;
1.118 jca 619: }
1.61 deraadt 620: } else {
621: fin = fdopen(s, "r+");
622: }
1.78 martynas 623: #else /* !SMALL */
1.40 fgsch 624: fin = fdopen(s, "r+");
1.78 martynas 625: #endif /* !SMALL */
1.40 fgsch 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) {
1.151 ! millert 636: if (verbose) {
! 637: fprintf(ttyout, "Requesting %s (via %s)\n",
! 638: origline, proxyurl);
! 639: }
1.32 itojun 640: /*
641: * Host: directive must use the destination host address for
1.136 bluhm 642: * the original URI (path).
1.32 itojun 643: */
1.123 guenther 644: if (credentials)
1.134 jsing 645: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
1.136 bluhm 646: "Proxy-Authorization: Basic %s\r\n"
647: "Host: %s\r\n%s%s\r\n\r\n",
648: epath, credentials,
649: proxyhost, buf ? buf : "", httpuseragent);
1.73 drahn 650: else
1.136 bluhm 651: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
652: "Host: %s\r\n%s%s\r\n\r\n",
653: epath, proxyhost, buf ? buf : "", httpuseragent);
1.28 itojun 654: } else {
1.151 ! millert 655: if (verbose)
! 656: fprintf(ttyout, "Requesting %s\n", origline);
1.90 martynas 657: #ifndef SMALL
658: if (resume) {
659: struct stat stbuf;
660:
661: if (stat(savefile, &stbuf) == 0)
662: restart_point = stbuf.st_size;
663: else
664: restart_point = 0;
665: }
1.123 guenther 666: if (credentials) {
1.134 jsing 667: ftp_printf(fin, tls,
1.106 haesbaer 668: "GET /%s %s\r\nAuthorization: Basic %s\r\nHost: ",
669: epath, restart_point ?
670: "HTTP/1.1\r\nConnection: close" : "HTTP/1.0",
1.123 guenther 671: credentials);
672: free(credentials);
673: credentials = NULL;
1.106 haesbaer 674: } else
675: #endif /* SMALL */
1.134 jsing 676: ftp_printf(fin, tls, "GET /%s %s\r\nHost: ", epath,
1.107 haesbaer 677: #ifndef SMALL
678: restart_point ? "HTTP/1.1\r\nConnection: close" :
679: #endif /* !SMALL */
680: "HTTP/1.0");
1.136 bluhm 681: if (proxyhost) {
682: ftp_printf(fin, tls, "%s", proxyhost);
683: port = NULL;
684: } else if (strchr(host, ':')) {
1.55 fgsch 685: /*
686: * strip off scoped address portion, since it's
687: * local to node
688: */
1.32 itojun 689: h = strdup(host);
690: if (h == NULL)
691: errx(1, "Can't allocate memory.");
692: if ((p = strchr(h, '%')) != NULL)
693: *p = '\0';
1.134 jsing 694: ftp_printf(fin, tls, "[%s]", h);
1.32 itojun 695: free(h);
1.55 fgsch 696: } else
1.134 jsing 697: ftp_printf(fin, tls, "%s", host);
1.55 fgsch 698:
699: /*
700: * Send port number only if it's specified and does not equal
701: * 80. Some broken HTTP servers get confused if you explicitly
702: * send them the port number.
703: */
1.61 deraadt 704: #ifndef SMALL
705: if (port && strcmp(port, (ishttpsurl ? "443" : "80")) != 0)
1.134 jsing 706: ftp_printf(fin, tls, ":%s", port);
1.90 martynas 707: if (restart_point)
1.134 jsing 708: ftp_printf(fin, tls, "\r\nRange: bytes=%lld-",
1.75 martynas 709: (long long)restart_point);
1.78 martynas 710: #else /* !SMALL */
1.55 fgsch 711: if (port && strcmp(port, "80") != 0)
1.134 jsing 712: ftp_printf(fin, tls, ":%s", port);
1.78 martynas 713: #endif /* !SMALL */
1.134 jsing 714: ftp_printf(fin, tls, "\r\n%s%s\r\n\r\n",
1.124 lteo 715: buf ? buf : "", httpuseragent);
1.28 itojun 716: }
1.95 martynas 717: free(epath);
1.74 pyr 718:
719: #ifndef SMALL
720: free(buf);
1.78 martynas 721: #endif /* !SMALL */
1.74 pyr 722: buf = NULL;
723:
1.61 deraadt 724: if (fin != NULL && fflush(fin) == EOF) {
1.14 millert 725: warn("Writing HTTP request");
1.6 millert 726: goto cleanup_url_get;
1.1 millert 727: }
1.134 jsing 728: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 729: warn("Receiving HTTP reply");
730: goto cleanup_url_get;
1.1 millert 731: }
1.40 fgsch 732:
733: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
734: buf[--len] = '\0';
1.80 martynas 735: #ifndef SMALL
1.40 fgsch 736: if (debug)
737: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 738: #endif /* !SMALL */
1.40 fgsch 739:
1.1 millert 740: cp = strchr(buf, ' ');
741: if (cp == NULL)
742: goto improper;
743: else
744: cp++;
1.69 jsg 745:
746: strlcpy(ststr, cp, sizeof(ststr));
1.75 martynas 747: status = strtonum(ststr, 200, 416, &errstr);
1.69 jsg 748: if (errstr) {
749: warnx("Error retrieving file: %s", cp);
750: goto cleanup_url_get;
751: }
752:
753: switch (status) {
754: case 200: /* OK */
1.75 martynas 755: #ifndef SMALL
1.109 sthen 756: /*
1.98 phessler 757: * When we request a partial file, and we receive an HTTP 200
758: * it is a good indication that the server doesn't support
759: * range requests, and is about to send us the entire file.
760: * If the restart_point == 0, then we are not actually
761: * requesting a partial file, and an HTTP 200 is appropriate.
762: */
763: if (resume && restart_point != 0) {
764: warnx("Server does not support resume.");
765: restart_point = resume = 0;
766: }
1.101 halex 767: /* FALLTHROUGH */
1.75 martynas 768: case 206: /* Partial Content */
1.91 halex 769: #endif /* !SMALL */
1.69 jsg 770: break;
771: case 301: /* Moved Permanently */
772: case 302: /* Found */
773: case 303: /* See Other */
774: case 307: /* Temporary Redirect */
1.40 fgsch 775: isredirect++;
1.54 fgsch 776: if (redirect_loop++ > 10) {
777: warnx("Too many redirections requested");
778: goto cleanup_url_get;
779: }
1.69 jsg 780: break;
1.75 martynas 781: #ifndef SMALL
782: case 416: /* Requested Range Not Satisfiable */
783: warnx("File is already fully retrieved.");
784: goto cleanup_url_get;
1.78 martynas 785: #endif /* !SMALL */
1.69 jsg 786: default:
1.1 millert 787: warnx("Error retrieving file: %s", cp);
1.6 millert 788: goto cleanup_url_get;
1.1 millert 789: }
790:
791: /*
792: * Read the rest of the header.
793: */
1.40 fgsch 794: free(buf);
795: filesize = -1;
796:
1.62 ray 797: for (;;) {
1.134 jsing 798: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 799: warn("Receiving HTTP reply");
800: goto cleanup_url_get;
801: }
1.61 deraadt 802:
1.40 fgsch 803: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
804: buf[--len] = '\0';
805: if (len == 0)
1.1 millert 806: break;
1.80 martynas 807: #ifndef SMALL
1.40 fgsch 808: if (debug)
809: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 810: #endif /* !SMALL */
1.1 millert 811:
1.40 fgsch 812: /* Look for some headers */
813: cp = buf;
1.1 millert 814: #define CONTENTLEN "Content-Length: "
1.40 fgsch 815: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
1.104 sthen 816: size_t s;
1.40 fgsch 817: cp += sizeof(CONTENTLEN) - 1;
1.111 deraadt 818: if ((s = strcspn(cp, " \t")))
1.104 sthen 819: *(cp+s) = 0;
1.58 grunk 820: filesize = strtonum(cp, 0, LLONG_MAX, &errstr);
821: if (errstr != NULL)
1.40 fgsch 822: goto improper;
1.75 martynas 823: #ifndef SMALL
1.90 martynas 824: if (restart_point)
1.75 martynas 825: filesize += restart_point;
1.78 martynas 826: #endif /* !SMALL */
1.40 fgsch 827: #define LOCATION "Location: "
828: } else if (isredirect &&
829: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
830: cp += sizeof(LOCATION) - 1;
1.144 sthen 831: /*
832: * If there is a colon before the first slash, this URI
833: * is not relative. RFC 3986 4.2
834: */
835: if (cp[strcspn(cp, ":/")] != ':') {
1.102 halex 836: #ifdef SMALL
837: errx(1, "Relative redirect not supported");
838: #else /* SMALL */
1.144 sthen 839: /* XXX doesn't handle protocol-relative URIs */
1.102 halex 840: if (*cp == '/') {
841: locbase = NULL;
842: cp++;
843: } else {
844: locbase = strdup(path);
845: if (locbase == NULL)
846: errx(1, "Can't allocate memory"
847: " for location base");
848: loctail = strchr(locbase, '#');
849: if (loctail != NULL)
850: *loctail = '\0';
851: loctail = strchr(locbase, '?');
852: if (loctail != NULL)
853: *loctail = '\0';
854: loctail = strrchr(locbase, '/');
855: if (loctail == NULL) {
856: free(locbase);
857: locbase = NULL;
858: } else
859: loctail[1] = '\0';
860: }
861: /* Contruct URL from relative redirect */
862: if (asprintf(&redirurl, "%s%s%s%s/%s%s",
863: scheme, full_host,
864: portnum ? ":" : "",
865: portnum ? portnum : "",
866: locbase ? locbase : "",
867: cp) == -1)
868: errx(1, "Cannot build "
869: "redirect URL");
870: free(locbase);
871: #endif /* SMALL */
872: } else if ((redirurl = strdup(cp)) == NULL)
873: errx(1, "Cannot allocate memory for URL");
874: loctail = strchr(redirurl, '#');
875: if (loctail != NULL)
876: *loctail = '\0';
1.40 fgsch 877: if (verbose)
1.102 halex 878: fprintf(ttyout, "Redirected to %s\n", redirurl);
1.40 fgsch 879: if (fin != NULL)
880: fclose(fin);
881: else if (s != -1)
882: close(s);
1.102 halex 883: rval = url_get(redirurl, proxyenv, savefile);
884: free(redirurl);
885: goto cleanup_url_get;
1.40 fgsch 886: }
1.108 tobias 887: free(buf);
1.1 millert 888: }
889:
1.17 millert 890: /* Open the output file. */
1.100 halex 891: if (!pipeout) {
1.75 martynas 892: #ifndef SMALL
893: if (resume)
1.83 martynas 894: out = open(savefile, O_CREAT | O_WRONLY | O_APPEND,
895: 0666);
1.75 martynas 896: else
1.78 martynas 897: #endif /* !SMALL */
1.75 martynas 898: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC,
899: 0666);
1.10 deraadt 900: if (out < 0) {
901: warn("Can't open %s", savefile);
902: goto cleanup_url_get;
903: }
904: } else
1.17 millert 905: out = fileno(stdout);
1.1 millert 906:
907: /* Trap signals */
908: oldintr = NULL;
1.97 martynas 909: oldinti = NULL;
1.1 millert 910: if (setjmp(httpabort)) {
911: if (oldintr)
1.2 millert 912: (void)signal(SIGINT, oldintr);
1.97 martynas 913: if (oldinti)
914: (void)signal(SIGINFO, oldinti);
1.6 millert 915: goto cleanup_url_get;
1.1 millert 916: }
917: oldintr = signal(SIGINT, aborthttp);
918:
919: bytes = 0;
920: hashbytes = mark;
1.84 martynas 921: progressmeter(-1, path);
1.43 millert 922:
923: free(buf);
1.1 millert 924:
925: /* Finally, suck down the file. */
1.113 tedu 926: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 927: errx(1, "Can't allocate memory for transfer buffer");
1.1 millert 928: i = 0;
1.61 deraadt 929: len = 1;
1.97 martynas 930: oldinti = signal(SIGINFO, psummary);
1.61 deraadt 931: while (len > 0) {
1.134 jsing 932: len = ftp_read(fin, tls, buf, buflen);
1.1 millert 933: bytes += len;
1.61 deraadt 934: for (cp = buf, wlen = len; wlen > 0; wlen -= i, cp += i) {
935: if ((i = write(out, cp, wlen)) == -1) {
1.1 millert 936: warn("Writing %s", savefile);
1.97 martynas 937: signal(SIGINFO, oldinti);
1.6 millert 938: goto cleanup_url_get;
1.1 millert 939: }
940: else if (i == 0)
941: break;
942: }
943: if (hash && !progress) {
944: while (bytes >= hashbytes) {
1.10 deraadt 945: (void)putc('#', ttyout);
1.1 millert 946: hashbytes += mark;
947: }
1.10 deraadt 948: (void)fflush(ttyout);
1.1 millert 949: }
950: }
1.97 martynas 951: signal(SIGINFO, oldinti);
1.1 millert 952: if (hash && !progress && bytes > 0) {
953: if (bytes < mark)
1.10 deraadt 954: (void)putc('#', ttyout);
955: (void)putc('\n', ttyout);
956: (void)fflush(ttyout);
1.1 millert 957: }
958: if (len != 0) {
959: warn("Reading from socket");
1.6 millert 960: goto cleanup_url_get;
1.1 millert 961: }
1.84 martynas 962: progressmeter(1, NULL);
1.75 martynas 963: if (
964: #ifndef SMALL
965: !resume &&
1.78 martynas 966: #endif /* !SMALL */
1.75 martynas 967: filesize != -1 && len == 0 && bytes != filesize) {
1.24 deraadt 968: if (verbose)
969: fputs("Read short file.\n", ttyout);
970: goto cleanup_url_get;
971: }
972:
1.1 millert 973: if (verbose)
1.97 martynas 974: ptransfer(0);
1.2 millert 975: (void)signal(SIGINT, oldintr);
1.1 millert 976:
1.40 fgsch 977: rval = 0;
978: goto cleanup_url_get;
1.1 millert 979:
1.14 millert 980: noftpautologin:
981: warnx(
982: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
983: goto cleanup_url_get;
984:
1.1 millert 985: improper:
1.8 millert 986: warnx("Improper response from %s", host);
1.14 millert 987:
1.6 millert 988: cleanup_url_get:
1.61 deraadt 989: #ifndef SMALL
1.134 jsing 990: if (tls != NULL) {
991: tls_close(tls);
992: tls_free(tls);
1.61 deraadt 993: }
1.102 halex 994: free(full_host);
1.128 jca 995: free(sslhost);
1.78 martynas 996: #endif /* !SMALL */
1.40 fgsch 997: if (fin != NULL)
998: fclose(fin);
999: else if (s != -1)
1.1 millert 1000: close(s);
1.67 steven 1001: free(buf);
1.136 bluhm 1002: free(proxyhost);
1.67 steven 1003: free(proxyurl);
1.62 ray 1004: free(newline);
1.123 guenther 1005: free(credentials);
1.40 fgsch 1006: return (rval);
1.1 millert 1007: }
1008:
1009: /*
1010: * Abort a http retrieval
1011: */
1.51 deraadt 1012: /* ARGSUSED */
1.1 millert 1013: void
1.51 deraadt 1014: aborthttp(int signo)
1.1 millert 1015: {
1016:
1017: alarmtimer(0);
1.10 deraadt 1018: fputs("\nhttp fetch aborted.\n", ttyout);
1019: (void)fflush(ttyout);
1.1 millert 1020: longjmp(httpabort, 1);
1021: }
1022:
1023: /*
1.22 deraadt 1024: * Abort a http retrieval
1025: */
1.51 deraadt 1026: /* ARGSUSED */
1.22 deraadt 1027: void
1.51 deraadt 1028: abortfile(int signo)
1.22 deraadt 1029: {
1030:
1031: alarmtimer(0);
1032: fputs("\nfile fetch aborted.\n", ttyout);
1033: (void)fflush(ttyout);
1034: longjmp(httpabort, 1);
1035: }
1036:
1037: /*
1.1 millert 1038: * Retrieve multiple files from the command line, transferring
1039: * files of the form "host:path", "ftp://host/path" using the
1040: * ftp protocol, and files of the form "http://host/path" using
1041: * the http protocol.
1.2 millert 1042: * If path has a trailing "/", then return (-1);
1.1 millert 1043: * the path will be cd-ed into and the connection remains open,
1044: * and the function will return -1 (to indicate the connection
1045: * is alive).
1046: * If an error occurs the return value will be the offset+1 in
1047: * argv[] of the file that caused a problem (i.e, argv[x]
1048: * returns x+1)
1049: * Otherwise, 0 is returned if all files retrieved successfully.
1050: */
1051: int
1.50 deraadt 1052: auto_fetch(int argc, char *argv[], char *outfile)
1.1 millert 1053: {
1054: char *xargv[5];
1.62 ray 1055: char *cp, *url, *host, *dir, *file, *portnum;
1056: char *username, *pass, *pathstart;
1.6 millert 1057: char *ftpproxy, *httpproxy;
1.14 millert 1058: int rval, xargc;
1059: volatile int argpos;
1.49 krw 1060: int dirhasglob, filehasglob, oautologin;
1.137 deraadt 1061: char rempath[PATH_MAX];
1.1 millert 1062:
1063: argpos = 0;
1064:
1065: if (setjmp(toplevel)) {
1066: if (connected)
1067: disconnect(0, NULL);
1.2 millert 1068: return (argpos + 1);
1.1 millert 1069: }
1.3 millert 1070: (void)signal(SIGINT, (sig_t)intr);
1071: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 1072:
1.45 millert 1073: if ((ftpproxy = getenv(FTP_PROXY)) != NULL && *ftpproxy == '\0')
1074: ftpproxy = NULL;
1075: if ((httpproxy = getenv(HTTP_PROXY)) != NULL && *httpproxy == '\0')
1076: httpproxy = NULL;
1.6 millert 1077:
1.1 millert 1078: /*
1079: * Loop through as long as there's files to fetch.
1080: */
1.123 guenther 1081: username = pass = NULL;
1.62 ray 1082: for (rval = 0; (rval == 0) && (argpos < argc); free(url), argpos++) {
1.1 millert 1083: if (strchr(argv[argpos], ':') == NULL)
1084: break;
1.123 guenther 1085:
1086: free(username);
1087: free(pass);
1.62 ray 1088: host = dir = file = portnum = username = pass = NULL;
1.1 millert 1089:
1090: /*
1091: * We muck with the string, so we make a copy.
1092: */
1.62 ray 1093: url = strdup(argv[argpos]);
1094: if (url == NULL)
1.1 millert 1095: errx(1, "Can't allocate memory for auto-fetch.");
1096:
1097: /*
1098: * Try HTTP URL-style arguments first.
1099: */
1.62 ray 1100: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.61 deraadt 1101: #ifndef SMALL
1102: /* even if we compiled without SSL, url_get will check */
1.62 ray 1103: strncasecmp(url, HTTPS_URL, sizeof(HTTPS_URL) -1) == 0 ||
1.78 martynas 1104: #endif /* !SMALL */
1.62 ray 1105: strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1.54 fgsch 1106: redirect_loop = 0;
1.62 ray 1107: if (url_get(url, httpproxy, outfile) == -1)
1.1 millert 1108: rval = argpos + 1;
1109: continue;
1110: }
1111:
1112: /*
1.6 millert 1113: * Try FTP URL-style arguments next. If ftpproxy is
1114: * set, use url_get() instead of standard ftp.
1115: * Finally, try host:file.
1.1 millert 1116: */
1.62 ray 1117: host = url;
1118: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 1119: char *passend, *passagain, *userend;
1.31 itojun 1120:
1.6 millert 1121: if (ftpproxy) {
1.62 ray 1122: if (url_get(url, ftpproxy, outfile) == -1)
1.6 millert 1123: rval = argpos + 1;
1124: continue;
1125: }
1.1 millert 1126: host += sizeof(FTP_URL) - 1;
1.8 millert 1127: dir = strchr(host, '/');
1.1 millert 1128:
1.8 millert 1129: /* Look for [user:pass@]host[:port] */
1.31 itojun 1130:
1131: /* check if we have "user:pass@" */
1.37 heko 1132: userend = strchr(host, ':');
1.31 itojun 1133: passend = strchr(host, '@');
1134: if (passend && userend && userend < passend &&
1135: (!dir || passend < dir)) {
1.62 ray 1136: username = host;
1.31 itojun 1137: pass = userend + 1;
1138: host = passend + 1;
1139: *userend = *passend = '\0';
1.37 heko 1140: passagain = strchr(host, '@');
1.42 deraadt 1141: if (strchr(pass, '@') != NULL ||
1.37 heko 1142: (passagain != NULL && passagain < dir)) {
1143: warnx(at_encoding_warning);
1.123 guenther 1144: username = pass = NULL;
1.37 heko 1145: goto bad_ftp_url;
1.42 deraadt 1146: }
1.31 itojun 1147:
1.77 martynas 1148: if (EMPTYSTRING(username)) {
1.11 millert 1149: bad_ftp_url:
1.31 itojun 1150: warnx("Invalid URL: %s", argv[argpos]);
1151: rval = argpos + 1;
1.123 guenther 1152: username = pass = NULL;
1.31 itojun 1153: continue;
1154: }
1.62 ray 1155: username = urldecode(username);
1.37 heko 1156: pass = urldecode(pass);
1.8 millert 1157: }
1.31 itojun 1158:
1159: /* check [host]:port, or [host] */
1160: if (host[0] == '[') {
1161: cp = strchr(host, ']');
1162: if (cp && (!dir || cp < dir)) {
1163: if (cp + 1 == dir || cp[1] == ':') {
1164: host++;
1165: *cp++ = '\0';
1166: } else
1167: cp = NULL;
1168: } else
1169: cp = host;
1.25 itojun 1170: } else
1171: cp = host;
1.31 itojun 1172:
1173: /* split off host[:port] if there is */
1174: if (cp) {
1175: portnum = strchr(cp, ':');
1.52 henning 1176: pathstart = strchr(cp, '/');
1177: /* : in path is not a port # indicator */
1178: if (portnum && pathstart &&
1179: pathstart < portnum)
1180: portnum = NULL;
1181:
1.31 itojun 1182: if (!portnum)
1183: ;
1184: else {
1185: if (!dir)
1186: ;
1187: else if (portnum + 1 < dir) {
1188: *portnum++ = '\0';
1189: /*
1190: * XXX should check if portnum
1191: * is decimal number
1192: */
1193: } else {
1194: /* empty portnum */
1195: goto bad_ftp_url;
1196: }
1197: }
1198: } else
1199: portnum = NULL;
1.8 millert 1200: } else { /* classic style `host:file' */
1201: dir = strchr(host, ':');
1202: }
1.1 millert 1203: if (EMPTYSTRING(host)) {
1204: rval = argpos + 1;
1205: continue;
1206: }
1207:
1208: /*
1.9 millert 1209: * If dir is NULL, the file wasn't specified
1.1 millert 1210: * (URL looked something like ftp://host)
1211: */
1.8 millert 1212: if (dir != NULL)
1213: *dir++ = '\0';
1.1 millert 1214:
1215: /*
1216: * Extract the file and (if present) directory name.
1217: */
1.42 deraadt 1218: if (!EMPTYSTRING(dir)) {
1.8 millert 1219: cp = strrchr(dir, '/');
1.1 millert 1220: if (cp != NULL) {
1221: *cp++ = '\0';
1222: file = cp;
1223: } else {
1224: file = dir;
1225: dir = NULL;
1226: }
1227: }
1.80 martynas 1228: #ifndef SMALL
1.1 millert 1229: if (debug)
1.42 deraadt 1230: fprintf(ttyout,
1231: "user %s:%s host %s port %s dir %s file %s\n",
1.76 martynas 1232: username, pass ? "XXXX" : NULL, host, portnum,
1233: dir, file);
1.80 martynas 1234: #endif /* !SMALL */
1.1 millert 1235:
1236: /*
1.49 krw 1237: * Set up the connection.
1.1 millert 1238: */
1.49 krw 1239: if (connected)
1240: disconnect(0, NULL);
1241: xargv[0] = __progname;
1242: xargv[1] = host;
1.8 millert 1243: xargv[2] = NULL;
1.49 krw 1244: xargc = 2;
1245: if (!EMPTYSTRING(portnum)) {
1246: xargv[2] = portnum;
1247: xargv[3] = NULL;
1248: xargc = 3;
1249: }
1250: oautologin = autologin;
1.88 martynas 1251: if (username == NULL)
1.89 halex 1252: anonftp = 1;
1253: else {
1254: anonftp = 0;
1.49 krw 1255: autologin = 0;
1.89 halex 1256: }
1.49 krw 1257: setpeer(xargc, xargv);
1258: autologin = oautologin;
1.87 martynas 1259: if (connected == 0 ||
1260: (connected == 1 && autologin && (username == NULL ||
1261: !ftp_login(host, username, pass)))) {
1.49 krw 1262: warnx("Can't connect or login to host `%s'", host);
1.8 millert 1263: rval = argpos + 1;
1264: continue;
1.1 millert 1265: }
1.49 krw 1266:
1267: /* Always use binary transfers. */
1268: setbinary(0, NULL);
1.1 millert 1269:
1.4 millert 1270: dirhasglob = filehasglob = 0;
1271: if (doglob) {
1.42 deraadt 1272: if (!EMPTYSTRING(dir) &&
1.4 millert 1273: strpbrk(dir, "*?[]{}") != NULL)
1274: dirhasglob = 1;
1.42 deraadt 1275: if (!EMPTYSTRING(file) &&
1.4 millert 1276: strpbrk(file, "*?[]{}") != NULL)
1277: filehasglob = 1;
1278: }
1279:
1.1 millert 1280: /* Change directories, if necessary. */
1.42 deraadt 1281: if (!EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 1282: xargv[0] = "cd";
1283: xargv[1] = dir;
1284: xargv[2] = NULL;
1285: cd(2, xargv);
1.42 deraadt 1286: if (!dirchange) {
1.1 millert 1287: rval = argpos + 1;
1288: continue;
1289: }
1290: }
1291:
1292: if (EMPTYSTRING(file)) {
1.86 martynas 1293: #ifndef SMALL
1.1 millert 1294: rval = -1;
1.86 martynas 1295: #else /* !SMALL */
1296: recvrequest("NLST", "-", NULL, "w", 0, 0);
1297: rval = 0;
1298: #endif /* !SMALL */
1.1 millert 1299: continue;
1300: }
1301:
1.21 marc 1302: if (verbose)
1.10 deraadt 1303: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 1304:
1.4 millert 1305: if (dirhasglob) {
1306: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
1307: file = rempath;
1308: }
1309:
1310: /* Fetch the file(s). */
1.10 deraadt 1311: xargc = 2;
1.1 millert 1312: xargv[0] = "get";
1313: xargv[1] = file;
1314: xargv[2] = NULL;
1.4 millert 1315: if (dirhasglob || filehasglob) {
1316: int ointeractive;
1317:
1318: ointeractive = interactive;
1319: interactive = 0;
1320: xargv[0] = "mget";
1.78 martynas 1321: #ifndef SMALL
1322: if (resume) {
1323: xargc = 3;
1324: xargv[1] = "-c";
1325: xargv[2] = file;
1326: xargv[3] = NULL;
1327: }
1328: #endif /* !SMALL */
1.10 deraadt 1329: mget(xargc, xargv);
1.5 millert 1330: interactive = ointeractive;
1.10 deraadt 1331: } else {
1.17 millert 1332: if (outfile != NULL) {
1333: xargv[2] = outfile;
1334: xargv[3] = NULL;
1.10 deraadt 1335: xargc++;
1336: }
1.75 martynas 1337: #ifndef SMALL
1338: if (resume)
1339: reget(xargc, xargv);
1340: else
1.78 martynas 1341: #endif /* !SMALL */
1.75 martynas 1342: get(xargc, xargv);
1.10 deraadt 1343: }
1.1 millert 1344:
1.4 millert 1345: if ((code / 100) != COMPLETE)
1.1 millert 1346: rval = argpos + 1;
1347: }
1348: if (connected && rval != -1)
1349: disconnect(0, NULL);
1350: return (rval);
1.37 heko 1351: }
1352:
1353: char *
1.50 deraadt 1354: urldecode(const char *str)
1.37 heko 1355: {
1.53 deraadt 1356: char *ret, c;
1357: int i, reallen;
1.37 heko 1358:
1.53 deraadt 1359: if (str == NULL)
1360: return NULL;
1361: if ((ret = malloc(strlen(str)+1)) == NULL)
1362: err(1, "Can't allocate memory for URL decoding");
1363: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
1364: c = str[i];
1365: if (c == '+') {
1366: *ret = ' ';
1367: continue;
1368: }
1.61 deraadt 1369:
1370: /* Cannot use strtol here because next char
1371: * after %xx may be a digit.
1372: */
1.143 guenther 1373: if (c == '%' && isxdigit((unsigned char)str[i+1]) &&
1374: isxdigit((unsigned char)str[i+2])) {
1.53 deraadt 1375: *ret = hextochar(&str[i+1]);
1376: i+=2;
1377: continue;
1378: }
1379: *ret = c;
1380: }
1381: *ret = '\0';
1382:
1383: return ret-reallen;
1.123 guenther 1384: }
1385:
1386: char *
1387: recode_credentials(const char *userinfo)
1388: {
1389: char *ui, *creds;
1390: size_t ulen, credsize;
1391:
1392: /* url-decode the user and pass */
1393: ui = urldecode(userinfo);
1394:
1395: ulen = strlen(ui);
1396: credsize = (ulen + 2) / 3 * 4 + 1;
1397: creds = malloc(credsize);
1398: if (creds == NULL)
1399: errx(1, "out of memory");
1400: if (b64_ntop(ui, ulen, creds, credsize) == -1)
1401: errx(1, "error in base64 encoding");
1402: free(ui);
1403: return (creds);
1.37 heko 1404: }
1405:
1406: char
1.50 deraadt 1407: hextochar(const char *str)
1.37 heko 1408: {
1.143 guenther 1409: unsigned char c, ret;
1.37 heko 1410:
1.53 deraadt 1411: c = str[0];
1412: ret = c;
1413: if (isalpha(c))
1414: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1415: else
1416: ret -= '0';
1417: ret *= 16;
1418:
1419: c = str[1];
1420: ret += c;
1421: if (isalpha(c))
1422: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1423: else
1424: ret -= '0';
1425: return ret;
1.25 itojun 1426: }
1427:
1428: int
1.50 deraadt 1429: isurl(const char *p)
1.25 itojun 1430: {
1.27 millert 1431:
1.26 deraadt 1432: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
1433: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.61 deraadt 1434: #ifndef SMALL
1435: strncasecmp(p, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0 ||
1.78 martynas 1436: #endif /* !SMALL */
1.27 millert 1437: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
1438: strstr(p, ":/"))
1439: return (1);
1440: return (0);
1.1 millert 1441: }
1.61 deraadt 1442:
1443: char *
1.134 jsing 1444: ftp_readline(FILE *fp, struct tls *tls, size_t *lenp)
1.61 deraadt 1445: {
1446: if (fp != NULL)
1447: return fparseln(fp, lenp, NULL, "\0\0\0", 0);
1448: #ifndef SMALL
1.134 jsing 1449: else if (tls != NULL)
1450: return SSL_readline(tls, lenp);
1.78 martynas 1451: #endif /* !SMALL */
1.61 deraadt 1452: else
1453: return NULL;
1454: }
1455:
1.65 ray 1456: size_t
1.134 jsing 1457: ftp_read(FILE *fp, struct tls *tls, char *buf, size_t len)
1.61 deraadt 1458: {
1.142 jsing 1459: ssize_t tls_ret;
1460: size_t ret = 0;
1461:
1.61 deraadt 1462: if (fp != NULL)
1463: ret = fread(buf, sizeof(char), len, fp);
1464: #ifndef SMALL
1.142 jsing 1465: else if (tls != NULL) {
1466: if ((tls_ret = tls_read(tls, buf, len)) >= 0)
1467: ret = (size_t)tls_ret;
1.65 ray 1468: }
1.78 martynas 1469: #endif /* !SMALL */
1.61 deraadt 1470: return (ret);
1471: }
1472:
1473: int
1.134 jsing 1474: ftp_printf(FILE *fp, struct tls *tls, const char *fmt, ...)
1.61 deraadt 1475: {
1476: int ret;
1477: va_list ap;
1478:
1479: va_start(ap, fmt);
1480:
1481: if (fp != NULL)
1482: ret = vfprintf(fp, fmt, ap);
1483: #ifndef SMALL
1.134 jsing 1484: else if (tls != NULL)
1485: ret = SSL_vprintf(tls, fmt, ap);
1.78 martynas 1486: #endif /* !SMALL */
1.61 deraadt 1487: else
1.92 jsg 1488: ret = 0;
1.61 deraadt 1489:
1490: va_end(ap);
1.136 bluhm 1491: #ifndef SMALL
1492: if (debug) {
1493: va_start(ap, fmt);
1494: ret = vfprintf(ttyout, fmt, ap);
1495: va_end(ap);
1496: }
1497: #endif /* !SMALL */
1.61 deraadt 1498: return (ret);
1499: }
1500:
1501: #ifndef SMALL
1502: int
1.134 jsing 1503: SSL_vprintf(struct tls *tls, const char *fmt, va_list ap)
1.61 deraadt 1504: {
1.139 bluhm 1505: char *string, *buf;
1.141 beck 1506: size_t len;
1.61 deraadt 1507: int ret;
1508:
1509: if ((ret = vasprintf(&string, fmt, ap)) == -1)
1510: return ret;
1.139 bluhm 1511: buf = string;
1512: len = ret;
1513: while (len > 0) {
1.141 beck 1514: ret = tls_write(tls, buf, len);
1515: if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT)
1.139 bluhm 1516: continue;
1517: if (ret < 0)
1518: break;
1.141 beck 1519: buf += ret;
1520: len -= ret;
1.139 bluhm 1521: }
1.61 deraadt 1522: free(string);
1523: return ret;
1524: }
1525:
1526: char *
1.134 jsing 1527: SSL_readline(struct tls *tls, size_t *lenp)
1.61 deraadt 1528: {
1.141 beck 1529: size_t i, len;
1.61 deraadt 1530: char *buf, *q, c;
1.109 sthen 1531: int ret;
1.61 deraadt 1532:
1533: len = 128;
1534: if ((buf = malloc(len)) == NULL)
1535: errx(1, "Can't allocate memory for transfer buffer");
1536: for (i = 0; ; i++) {
1537: if (i >= len - 1) {
1.132 doug 1538: if ((q = reallocarray(buf, len, 2)) == NULL)
1.61 deraadt 1539: errx(1, "Can't expand transfer buffer");
1540: buf = q;
1541: len *= 2;
1542: }
1.109 sthen 1543: again:
1.141 beck 1544: ret = tls_read(tls, &c, 1);
1545: if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT)
1.126 jsing 1546: goto again;
1.142 jsing 1547: if (ret < 0)
1.140 jsing 1548: errx(1, "SSL read error: %s", tls_error(tls));
1.126 jsing 1549:
1.61 deraadt 1550: buf[i] = c;
1.145 martijn 1551: if (c == '\n') {
1552: buf[i] = '\0';
1.61 deraadt 1553: break;
1.145 martijn 1554: }
1.61 deraadt 1555: }
1556: *lenp = i;
1557: return (buf);
1558: }
1559:
1560: int
1.81 espie 1561: proxy_connect(int socket, char *host, char *cookie)
1.61 deraadt 1562: {
1.66 ray 1563: int l;
1.61 deraadt 1564: char buf[1024];
1565: char *connstr, *hosttail, *port;
1566:
1567: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
1568: (hosttail[1] == '\0' || hosttail[1] == ':')) {
1569: host++;
1570: *hosttail++ = '\0';
1571: } else
1572: hosttail = host;
1573:
1574: port = strrchr(hosttail, ':'); /* find portnum */
1575: if (port != NULL)
1576: *port++ = '\0';
1577: if (!port)
1578: port = "443";
1579:
1.81 espie 1580: if (cookie) {
1581: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n"
1582: "Proxy-Authorization: Basic %s\r\n%s\r\n\r\n",
1583: host, port, cookie, HTTP_USER_AGENT);
1584: } else {
1585: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n%s\r\n\r\n",
1586: host, port, HTTP_USER_AGENT);
1587: }
1588:
1.66 ray 1589: if (l == -1)
1.61 deraadt 1590: errx(1, "Could not allocate memory to assemble connect string!");
1.80 martynas 1591: #ifndef SMALL
1.68 ray 1592: if (debug)
1593: printf("%s", connstr);
1.80 martynas 1594: #endif /* !SMALL */
1.66 ray 1595: if (write(socket, connstr, l) != l)
1.68 ray 1596: err(1, "Could not send connect string");
1.61 deraadt 1597: read(socket, &buf, sizeof(buf)); /* only proxy header XXX: error handling? */
1.71 ray 1598: free(connstr);
1.61 deraadt 1599: return(200);
1600: }
1.78 martynas 1601: #endif /* !SMALL */
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