Annotation of src/usr.bin/ftp/fetch.c, Revision 1.165
1.165 ! procter 1: /* $OpenBSD: fetch.c,v 1.164 2017/09/25 11:04:54 krw 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:
1.154 deraadt 61: #ifndef NOSSL
1.134 jsing 62: #include <tls.h>
1.154 deraadt 63: #else /* !NOSSL */
1.134 jsing 64: struct tls;
1.154 deraadt 65: #endif /* !NOSSL */
1.61 deraadt 66:
1.1 millert 67: #include "ftp_var.h"
1.86 martynas 68: #include "cmds.h"
1.1 millert 69:
1.157 deraadt 70: static int url_get(const char *, const char *, const char *, int);
1.38 millert 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);
1.158 jca 79: #ifndef NOSSL
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 *);
1.158 jca 83: #endif /* !NOSSL */
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:
1.160 krw 103: * - No corresponding graphic US-ASCII.
104: * - Unsafe characters.
1.95 martynas 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:
1.155 deraadt 168: /* ARGSUSED */
169: static void
170: tooslow(int signo)
171: {
172: dprintf(STDERR_FILENO, "%s: connect taking too long\n", __progname);
173: _exit(2);
174: }
175:
1.95 martynas 176: /*
1.6 millert 177: * Retrieve URL, via the proxy in $proxyvar if necessary.
1.1 millert 178: * Modifies the string argument given.
179: * Returns -1 on failure, 0 on success
180: */
1.14 millert 181: static int
1.157 deraadt 182: url_get(const char *origline, const char *proxyenv, const char *outfile, int lastfile)
1.1 millert 183: {
1.69 jsg 184: char pbuf[NI_MAXSERV], hbuf[NI_MAXHOST], *cp, *portnum, *path, ststr[4];
1.62 ray 185: char *hosttail, *cause = "unknown", *newline, *host, *port, *buf = NULL;
1.106 haesbaer 186: char *epath, *redirurl, *loctail, *h, *p;
1.53 deraadt 187: int error, i, isftpurl = 0, isfileurl = 0, isredirect = 0, rval = -1;
1.152 krw 188: struct addrinfo hints, *res0, *res;
1.34 millert 189: const char * volatile savefile;
1.62 ray 190: char * volatile proxyurl = NULL;
1.123 guenther 191: char *credentials = NULL;
1.164 krw 192: volatile int s = -1, out = -1;
1.97 martynas 193: volatile sig_t oldintr, oldinti;
1.53 deraadt 194: FILE *fin = NULL;
1.1 millert 195: off_t hashbytes;
1.58 grunk 196: const char *errstr;
1.114 tedu 197: ssize_t len, wlen;
1.136 bluhm 198: char *proxyhost = NULL;
1.154 deraadt 199: #ifndef NOSSL
1.61 deraadt 200: char *sslpath = NULL, *sslhost = NULL;
1.159 krw 201: char *full_host = NULL;
1.102 halex 202: const char *scheme;
1.123 guenther 203: int ishttpurl = 0, ishttpsurl = 0;
1.159 krw 204: #endif /* !NOSSL */
205: #ifndef SMALL
206: char *locbase;
1.152 krw 207: struct addrinfo *ares = NULL;
1.159 krw 208: #endif
1.134 jsing 209: struct tls *tls = NULL;
1.70 deraadt 210: int status;
1.105 haesbaer 211: int save_errno;
1.113 tedu 212: const size_t buflen = 128 * 1024;
1.14 millert 213:
1.97 martynas 214: direction = "received";
215:
1.62 ray 216: newline = strdup(origline);
217: if (newline == NULL)
1.14 millert 218: errx(1, "Can't allocate memory to parse URL");
1.102 halex 219: if (strncasecmp(newline, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
1.62 ray 220: host = newline + sizeof(HTTP_URL) - 1;
1.102 halex 221: #ifndef SMALL
1.123 guenther 222: ishttpurl = 1;
1.102 halex 223: scheme = HTTP_URL;
224: #endif /* !SMALL */
225: } else if (strncasecmp(newline, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.62 ray 226: host = newline + sizeof(FTP_URL) - 1;
1.14 millert 227: isftpurl = 1;
1.102 halex 228: #ifndef SMALL
229: scheme = FTP_URL;
230: #endif /* !SMALL */
1.62 ray 231: } else if (strncasecmp(newline, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
232: host = newline + sizeof(FILE_URL) - 1;
1.22 deraadt 233: isfileurl = 1;
1.154 deraadt 234: #ifndef NOSSL
1.102 halex 235: scheme = FILE_URL;
1.62 ray 236: } else if (strncasecmp(newline, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0) {
237: host = newline + sizeof(HTTPS_URL) - 1;
1.61 deraadt 238: ishttpsurl = 1;
1.102 halex 239: scheme = HTTPS_URL;
1.154 deraadt 240: #endif /* !NOSSL */
1.14 millert 241: } else
1.62 ray 242: errx(1, "url_get: Invalid URL '%s'", newline);
1.6 millert 243:
1.22 deraadt 244: if (isfileurl) {
245: path = host;
246: } else {
1.93 martynas 247: path = strchr(host, '/'); /* Find path */
1.22 deraadt 248: if (EMPTYSTRING(path)) {
1.93 martynas 249: if (outfile) { /* No slash, but */
250: path=strchr(host,'\0'); /* we have outfile. */
251: goto noslash;
252: }
1.22 deraadt 253: if (isftpurl)
254: goto noftpautologin;
1.94 martynas 255: warnx("No `/' after host (use -o): %s", origline);
1.22 deraadt 256: goto cleanup_url_get;
257: }
258: *path++ = '\0';
1.93 martynas 259: if (EMPTYSTRING(path) && !outfile) {
1.22 deraadt 260: if (isftpurl)
261: goto noftpautologin;
1.94 martynas 262: warnx("No filename after host (use -o): %s", origline);
1.22 deraadt 263: goto cleanup_url_get;
264: }
1.14 millert 265: }
1.1 millert 266:
1.93 martynas 267: noslash:
1.106 haesbaer 268:
1.154 deraadt 269: #ifndef NOSSL
1.106 haesbaer 270: /*
271: * Look for auth header in host, since now host does not
272: * contain the path. Basic auth from RFC 2617, valid
273: * characters for path are in RFC 3986 section 3.3.
274: */
1.123 guenther 275: if (proxyenv == NULL && (ishttpurl || ishttpsurl)) {
1.106 haesbaer 276: if ((p = strchr(host, '@')) != NULL) {
1.123 guenther 277: *p = '\0';
278: credentials = recode_credentials(host);
1.106 haesbaer 279: host = p + 1;
280: }
281: }
1.154 deraadt 282: #endif /* NOSSL */
1.106 haesbaer 283:
1.17 millert 284: if (outfile)
285: savefile = outfile;
1.93 martynas 286: else {
287: if (path[strlen(path) - 1] == '/') /* Consider no file */
288: savefile = NULL; /* after dir invalid. */
289: else
290: savefile = basename(path);
1.75 martynas 291: }
292:
1.14 millert 293: if (EMPTYSTRING(savefile)) {
294: if (isftpurl)
295: goto noftpautologin;
1.94 martynas 296: warnx("No filename after directory (use -o): %s", origline);
1.6 millert 297: goto cleanup_url_get;
1.14 millert 298: }
1.1 millert 299:
1.93 martynas 300: #ifndef SMALL
1.100 halex 301: if (resume && pipeout) {
1.93 martynas 302: warnx("can't append to stdout");
303: goto cleanup_url_get;
304: }
305: #endif /* !SMALL */
306:
1.59 uwe 307: if (!isfileurl && proxyenv != NULL) { /* use proxy */
1.154 deraadt 308: #ifndef NOSSL
1.61 deraadt 309: if (ishttpsurl) {
310: sslpath = strdup(path);
311: sslhost = strdup(host);
312: if (! sslpath || ! sslhost)
313: errx(1, "Can't allocate memory for https path/host.");
314: }
1.154 deraadt 315: #endif /* !NOSSL */
1.136 bluhm 316: proxyhost = strdup(host);
317: if (proxyhost == NULL)
318: errx(1, "Can't allocate memory for proxy host.");
1.62 ray 319: proxyurl = strdup(proxyenv);
320: if (proxyurl == NULL)
1.14 millert 321: errx(1, "Can't allocate memory for proxy URL.");
1.62 ray 322: if (strncasecmp(proxyurl, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
323: host = proxyurl + sizeof(HTTP_URL) - 1;
324: else if (strncasecmp(proxyurl, FTP_URL, sizeof(FTP_URL) - 1) == 0)
325: host = proxyurl + sizeof(FTP_URL) - 1;
1.6 millert 326: else {
1.14 millert 327: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 328: goto cleanup_url_get;
329: }
1.14 millert 330: if (EMPTYSTRING(host)) {
331: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 332: goto cleanup_url_get;
1.14 millert 333: }
1.93 martynas 334: if (*--path == '\0')
335: *path = '/'; /* add / back to real path */
1.1 millert 336: path = strchr(host, '/'); /* remove trailing / on host */
1.42 deraadt 337: if (!EMPTYSTRING(path))
1.73 drahn 338: *path++ = '\0'; /* i guess this ++ is useless */
339:
340: path = strchr(host, '@'); /* look for credentials in proxy */
341: if (!EMPTYSTRING(path)) {
1.81 espie 342: *path = '\0';
1.123 guenther 343: if (strchr(host, ':') == NULL) {
1.73 drahn 344: warnx("Malformed proxy URL: %s", proxyenv);
345: goto cleanup_url_get;
346: }
1.123 guenther 347: credentials = recode_credentials(host);
1.81 espie 348: *path = '@'; /* restore @ in proxyurl */
1.123 guenther 349:
1.73 drahn 350: /*
1.81 espie 351: * This removes the password from proxyurl,
1.73 drahn 352: * filling with stars
353: */
1.81 espie 354: for (host = 1 + strchr(proxyurl + 5, ':'); *host != '@';
1.73 drahn 355: host++)
356: *host = '*';
357:
1.81 espie 358: host = path + 1;
1.73 drahn 359: }
1.123 guenther 360:
1.62 ray 361: path = newline;
1.1 millert 362: }
363:
1.22 deraadt 364: if (isfileurl) {
365: struct stat st;
366:
367: s = open(path, O_RDONLY);
368: if (s == -1) {
369: warn("Can't open file %s", path);
370: goto cleanup_url_get;
371: }
372:
373: if (fstat(s, &st) == -1)
374: filesize = -1;
375: else
376: filesize = st.st_size;
377:
1.83 martynas 378: /* Open the output file. */
1.100 halex 379: if (!pipeout) {
1.75 martynas 380: #ifndef SMALL
381: if (resume)
1.82 deraadt 382: out = open(savefile, O_CREAT | O_WRONLY |
383: O_APPEND, 0666);
384:
1.75 martynas 385: else
1.78 martynas 386: #endif /* !SMALL */
1.75 martynas 387: out = open(savefile, O_CREAT | O_WRONLY |
388: O_TRUNC, 0666);
1.22 deraadt 389: if (out < 0) {
390: warn("Can't open %s", savefile);
391: goto cleanup_url_get;
392: }
393: } else
394: out = fileno(stdout);
395:
1.75 martynas 396: #ifndef SMALL
397: if (resume) {
398: if (fstat(out, &st) == -1) {
399: warn("Can't fstat %s", savefile);
400: goto cleanup_url_get;
401: }
402: if (lseek(s, st.st_size, SEEK_SET) == -1) {
403: warn("Can't lseek %s", path);
404: goto cleanup_url_get;
405: }
406: restart_point = st.st_size;
407: }
1.78 martynas 408: #endif /* !SMALL */
1.75 martynas 409:
1.22 deraadt 410: /* Trap signals */
411: oldintr = NULL;
1.97 martynas 412: oldinti = NULL;
1.22 deraadt 413: if (setjmp(httpabort)) {
414: if (oldintr)
415: (void)signal(SIGINT, oldintr);
1.97 martynas 416: if (oldinti)
417: (void)signal(SIGINFO, oldinti);
1.22 deraadt 418: goto cleanup_url_get;
419: }
420: oldintr = signal(SIGINT, abortfile);
1.42 deraadt 421:
1.22 deraadt 422: bytes = 0;
423: hashbytes = mark;
1.84 martynas 424: progressmeter(-1, path);
1.40 fgsch 425:
1.113 tedu 426: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 427: errx(1, "Can't allocate memory for transfer buffer");
1.42 deraadt 428:
1.22 deraadt 429: /* Finally, suck down the file. */
430: i = 0;
1.97 martynas 431: oldinti = signal(SIGINFO, psummary);
1.113 tedu 432: while ((len = read(s, buf, buflen)) > 0) {
1.22 deraadt 433: bytes += len;
434: for (cp = buf; len > 0; len -= i, cp += i) {
435: if ((i = write(out, cp, len)) == -1) {
436: warn("Writing %s", savefile);
1.97 martynas 437: signal(SIGINFO, oldinti);
1.22 deraadt 438: goto cleanup_url_get;
439: }
440: else if (i == 0)
441: break;
442: }
443: if (hash && !progress) {
444: while (bytes >= hashbytes) {
445: (void)putc('#', ttyout);
446: hashbytes += mark;
447: }
448: (void)fflush(ttyout);
449: }
450: }
1.97 martynas 451: signal(SIGINFO, oldinti);
1.22 deraadt 452: if (hash && !progress && bytes > 0) {
453: if (bytes < mark)
454: (void)putc('#', ttyout);
455: (void)putc('\n', ttyout);
456: (void)fflush(ttyout);
457: }
458: if (len != 0) {
459: warn("Reading from file");
460: goto cleanup_url_get;
461: }
1.84 martynas 462: progressmeter(1, NULL);
1.22 deraadt 463: if (verbose)
1.97 martynas 464: ptransfer(0);
1.22 deraadt 465: (void)signal(SIGINT, oldintr);
1.42 deraadt 466:
1.40 fgsch 467: rval = 0;
468: goto cleanup_url_get;
1.22 deraadt 469: }
470:
1.28 itojun 471: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
472: (hosttail[1] == '\0' || hosttail[1] == ':')) {
473: host++;
474: *hosttail++ = '\0';
1.102 halex 475: #ifndef SMALL
476: if (asprintf(&full_host, "[%s]", host) == -1)
477: errx(1, "Cannot allocate memory for hostname");
478: #endif /* !SMALL */
1.28 itojun 479: } else
480: hosttail = host;
481:
482: portnum = strrchr(hosttail, ':'); /* find portnum */
1.1 millert 483: if (portnum != NULL)
484: *portnum++ = '\0';
1.154 deraadt 485: #ifndef NOSSL
1.150 millert 486: port = portnum ? portnum : (ishttpsurl ? httpsport : httpport);
1.154 deraadt 487: #else /* !NOSSL */
1.150 millert 488: port = portnum ? portnum : httpport;
1.154 deraadt 489: #endif /* !NOSSL */
1.1 millert 490:
1.80 martynas 491: #ifndef SMALL
1.102 halex 492: if (full_host == NULL)
493: if ((full_host = strdup(host)) == NULL)
494: errx(1, "Cannot allocate memory for hostname");
1.1 millert 495: if (debug)
1.106 haesbaer 496: fprintf(ttyout, "host %s, port %s, path %s, "
1.150 millert 497: "save as %s, auth %s.\n", host, port, path,
498: savefile, credentials ? credentials : "none");
1.80 martynas 499: #endif /* !SMALL */
1.1 millert 500:
1.25 itojun 501: memset(&hints, 0, sizeof(hints));
1.39 deraadt 502: hints.ai_family = family;
1.25 itojun 503: hints.ai_socktype = SOCK_STREAM;
504: error = getaddrinfo(host, port, &hints, &res0);
1.61 deraadt 505: /*
506: * If the services file is corrupt/missing, fall back
507: * on our hard-coded defines.
508: */
1.30 deraadt 509: if (error == EAI_SERVICE && port == httpport) {
510: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
511: error = getaddrinfo(host, pbuf, &hints, &res0);
1.154 deraadt 512: #ifndef NOSSL
1.61 deraadt 513: } else if (error == EAI_SERVICE && port == httpsport) {
514: snprintf(pbuf, sizeof(pbuf), "%d", HTTPS_PORT);
515: error = getaddrinfo(host, pbuf, &hints, &res0);
1.154 deraadt 516: #endif /* !NOSSL */
1.30 deraadt 517: }
1.25 itojun 518: if (error) {
1.122 guenther 519: warnx("%s: %s", host, gai_strerror(error));
1.25 itojun 520: goto cleanup_url_get;
1.1 millert 521: }
522:
1.105 haesbaer 523: #ifndef SMALL
524: if (srcaddr) {
525: hints.ai_flags |= AI_NUMERICHOST;
526: error = getaddrinfo(srcaddr, NULL, &hints, &ares);
527: if (error) {
1.122 guenther 528: warnx("%s: %s", srcaddr, gai_strerror(error));
1.105 haesbaer 529: goto cleanup_url_get;
530: }
531: }
532: #endif /* !SMALL */
1.135 deraadt 533:
534: /* ensure consistent order of the output */
535: if (verbose)
536: setvbuf(ttyout, NULL, _IOLBF, 0);
1.105 haesbaer 537:
1.25 itojun 538: s = -1;
539: for (res = res0; res; res = res->ai_next) {
1.44 itojun 540: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
541: sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
542: strlcpy(hbuf, "(unknown)", sizeof(hbuf));
1.41 deraadt 543: if (verbose)
1.44 itojun 544: fprintf(ttyout, "Trying %s...\n", hbuf);
1.14 millert 545:
1.25 itojun 546: s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
547: if (s == -1) {
548: cause = "socket";
549: continue;
1.1 millert 550: }
551:
1.105 haesbaer 552: #ifndef SMALL
553: if (srcaddr) {
554: if (ares->ai_family != res->ai_family) {
555: close(s);
556: s = -1;
557: errno = EINVAL;
558: cause = "bind";
559: continue;
560: }
561: if (bind(s, ares->ai_addr, ares->ai_addrlen) < 0) {
562: save_errno = errno;
563: close(s);
564: errno = save_errno;
565: s = -1;
566: cause = "bind";
567: continue;
568: }
569: }
570: #endif /* !SMALL */
571:
1.155 deraadt 572: if (connect_timeout) {
573: (void)signal(SIGALRM, tooslow);
574: alarmtimer(connect_timeout);
575: }
576:
1.149 millert 577: for (error = connect(s, res->ai_addr, res->ai_addrlen);
578: error != 0 && errno == EINTR; error = connect_wait(s))
579: continue;
580: if (error != 0) {
1.57 otto 581: save_errno = errno;
1.25 itojun 582: close(s);
1.57 otto 583: errno = save_errno;
1.25 itojun 584: s = -1;
585: cause = "connect";
1.19 deraadt 586: continue;
587: }
1.25 itojun 588:
1.29 itojun 589: /* get port in numeric */
590: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
591: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
592: port = pbuf;
593: else
594: port = NULL;
595:
1.158 jca 596: #ifndef NOSSL
1.61 deraadt 597: if (proxyenv && sslhost)
1.123 guenther 598: proxy_connect(s, sslhost, credentials);
1.158 jca 599: #endif /* !NOSSL */
1.25 itojun 600: break;
601: }
602: freeaddrinfo(res0);
1.105 haesbaer 603: #ifndef SMALL
604: if (srcaddr)
605: freeaddrinfo(ares);
606: #endif /* !SMALL */
1.25 itojun 607: if (s < 0) {
1.33 millert 608: warn("%s", cause);
1.6 millert 609: goto cleanup_url_get;
1.1 millert 610: }
611:
1.154 deraadt 612: #ifndef NOSSL
1.61 deraadt 613: if (ishttpsurl) {
614: if (proxyenv && sslpath) {
615: ishttpsurl = 0;
1.62 ray 616: proxyurl = NULL;
1.61 deraadt 617: path = sslpath;
618: }
1.131 jca 619: if (sslhost == NULL) {
620: sslhost = strdup(host);
621: if (sslhost == NULL)
622: errx(1, "Can't allocate memory for https host.");
1.116 jca 623: }
1.134 jsing 624: if ((tls = tls_client()) == NULL) {
1.126 jsing 625: fprintf(ttyout, "failed to create SSL client\n");
1.61 deraadt 626: goto cleanup_url_get;
627: }
1.134 jsing 628: if (tls_configure(tls, tls_config) != 0) {
1.126 jsing 629: fprintf(ttyout, "SSL configuration failure: %s\n",
1.134 jsing 630: tls_error(tls));
1.61 deraadt 631: goto cleanup_url_get;
1.117 jca 632: }
1.134 jsing 633: if (tls_connect_socket(tls, s, sslhost) != 0) {
634: fprintf(ttyout, "SSL failure: %s\n", tls_error(tls));
1.72 ray 635: goto cleanup_url_get;
1.118 jca 636: }
1.61 deraadt 637: } else {
638: fin = fdopen(s, "r+");
1.165 ! procter 639: s = -1;
1.61 deraadt 640: }
1.154 deraadt 641: #else /* !NOSSL */
1.40 fgsch 642: fin = fdopen(s, "r+");
1.165 ! procter 643: s = -1;
1.154 deraadt 644: #endif /* !NOSSL */
1.155 deraadt 645:
1.157 deraadt 646: #ifdef SMALL
647: if (lastfile) {
648: if (pipeout) {
649: if (pledge("stdio rpath inet dns tty", NULL) == -1)
650: err(1, "pledge");
651: } else {
652: if (pledge("stdio rpath wpath cpath inet dns tty", NULL) == -1)
653: err(1, "pledge");
654: }
655: }
656: #endif
657:
1.155 deraadt 658: if (connect_timeout) {
659: signal(SIGALRM, SIG_DFL);
660: alarmtimer(0);
661: }
1.40 fgsch 662:
1.1 millert 663: /*
1.40 fgsch 664: * Construct and send the request. Proxy requests don't want leading /.
1.1 millert 665: */
1.154 deraadt 666: #ifndef NOSSL
1.74 pyr 667: cookie_get(host, path, ishttpsurl, &buf);
1.154 deraadt 668: #endif /* !NOSSL */
1.95 martynas 669:
670: epath = url_encode(path);
1.62 ray 671: if (proxyurl) {
1.151 millert 672: if (verbose) {
673: fprintf(ttyout, "Requesting %s (via %s)\n",
674: origline, proxyurl);
675: }
1.32 itojun 676: /*
677: * Host: directive must use the destination host address for
1.136 bluhm 678: * the original URI (path).
1.32 itojun 679: */
1.123 guenther 680: if (credentials)
1.134 jsing 681: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
1.136 bluhm 682: "Proxy-Authorization: Basic %s\r\n"
683: "Host: %s\r\n%s%s\r\n\r\n",
684: epath, credentials,
685: proxyhost, buf ? buf : "", httpuseragent);
1.73 drahn 686: else
1.136 bluhm 687: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
688: "Host: %s\r\n%s%s\r\n\r\n",
689: epath, proxyhost, buf ? buf : "", httpuseragent);
1.28 itojun 690: } else {
1.151 millert 691: if (verbose)
692: fprintf(ttyout, "Requesting %s\n", origline);
1.90 martynas 693: #ifndef SMALL
694: if (resume) {
695: struct stat stbuf;
696:
697: if (stat(savefile, &stbuf) == 0)
698: restart_point = stbuf.st_size;
699: else
700: restart_point = 0;
701: }
1.154 deraadt 702: #endif /* SMALL */
703: #ifndef NOSSL
1.123 guenther 704: if (credentials) {
1.134 jsing 705: ftp_printf(fin, tls,
1.106 haesbaer 706: "GET /%s %s\r\nAuthorization: Basic %s\r\nHost: ",
707: epath, restart_point ?
708: "HTTP/1.1\r\nConnection: close" : "HTTP/1.0",
1.123 guenther 709: credentials);
710: free(credentials);
711: credentials = NULL;
1.106 haesbaer 712: } else
1.154 deraadt 713: #endif /* NOSSL */
1.134 jsing 714: ftp_printf(fin, tls, "GET /%s %s\r\nHost: ", epath,
1.107 haesbaer 715: #ifndef SMALL
716: restart_point ? "HTTP/1.1\r\nConnection: close" :
717: #endif /* !SMALL */
718: "HTTP/1.0");
1.136 bluhm 719: if (proxyhost) {
720: ftp_printf(fin, tls, "%s", proxyhost);
721: port = NULL;
722: } else if (strchr(host, ':')) {
1.55 fgsch 723: /*
724: * strip off scoped address portion, since it's
725: * local to node
726: */
1.32 itojun 727: h = strdup(host);
728: if (h == NULL)
729: errx(1, "Can't allocate memory.");
730: if ((p = strchr(h, '%')) != NULL)
731: *p = '\0';
1.134 jsing 732: ftp_printf(fin, tls, "[%s]", h);
1.32 itojun 733: free(h);
1.55 fgsch 734: } else
1.134 jsing 735: ftp_printf(fin, tls, "%s", host);
1.55 fgsch 736:
737: /*
738: * Send port number only if it's specified and does not equal
739: * 80. Some broken HTTP servers get confused if you explicitly
740: * send them the port number.
741: */
1.154 deraadt 742: #ifndef NOSSL
1.61 deraadt 743: if (port && strcmp(port, (ishttpsurl ? "443" : "80")) != 0)
1.134 jsing 744: ftp_printf(fin, tls, ":%s", port);
1.90 martynas 745: if (restart_point)
1.134 jsing 746: ftp_printf(fin, tls, "\r\nRange: bytes=%lld-",
1.75 martynas 747: (long long)restart_point);
1.154 deraadt 748: #else /* !NOSSL */
1.55 fgsch 749: if (port && strcmp(port, "80") != 0)
1.134 jsing 750: ftp_printf(fin, tls, ":%s", port);
1.154 deraadt 751: #endif /* !NOSSL */
1.134 jsing 752: ftp_printf(fin, tls, "\r\n%s%s\r\n\r\n",
1.124 lteo 753: buf ? buf : "", httpuseragent);
1.28 itojun 754: }
1.95 martynas 755: free(epath);
1.74 pyr 756:
1.154 deraadt 757: #ifndef NOSSL
1.74 pyr 758: free(buf);
1.156 tb 759: #endif /* !NOSSL */
1.74 pyr 760: buf = NULL;
761:
1.61 deraadt 762: if (fin != NULL && fflush(fin) == EOF) {
1.14 millert 763: warn("Writing HTTP request");
1.6 millert 764: goto cleanup_url_get;
1.1 millert 765: }
1.134 jsing 766: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 767: warn("Receiving HTTP reply");
768: goto cleanup_url_get;
1.1 millert 769: }
1.40 fgsch 770:
771: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
772: buf[--len] = '\0';
1.80 martynas 773: #ifndef SMALL
1.40 fgsch 774: if (debug)
775: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 776: #endif /* !SMALL */
1.40 fgsch 777:
1.1 millert 778: cp = strchr(buf, ' ');
779: if (cp == NULL)
780: goto improper;
781: else
782: cp++;
1.69 jsg 783:
784: strlcpy(ststr, cp, sizeof(ststr));
1.75 martynas 785: status = strtonum(ststr, 200, 416, &errstr);
1.69 jsg 786: if (errstr) {
787: warnx("Error retrieving file: %s", cp);
788: goto cleanup_url_get;
789: }
790:
791: switch (status) {
792: case 200: /* OK */
1.75 martynas 793: #ifndef SMALL
1.109 sthen 794: /*
1.98 phessler 795: * When we request a partial file, and we receive an HTTP 200
796: * it is a good indication that the server doesn't support
797: * range requests, and is about to send us the entire file.
798: * If the restart_point == 0, then we are not actually
799: * requesting a partial file, and an HTTP 200 is appropriate.
800: */
801: if (resume && restart_point != 0) {
802: warnx("Server does not support resume.");
803: restart_point = resume = 0;
804: }
1.101 halex 805: /* FALLTHROUGH */
1.75 martynas 806: case 206: /* Partial Content */
1.91 halex 807: #endif /* !SMALL */
1.69 jsg 808: break;
809: case 301: /* Moved Permanently */
810: case 302: /* Found */
811: case 303: /* See Other */
812: case 307: /* Temporary Redirect */
1.40 fgsch 813: isredirect++;
1.54 fgsch 814: if (redirect_loop++ > 10) {
815: warnx("Too many redirections requested");
816: goto cleanup_url_get;
817: }
1.69 jsg 818: break;
1.75 martynas 819: #ifndef SMALL
820: case 416: /* Requested Range Not Satisfiable */
821: warnx("File is already fully retrieved.");
822: goto cleanup_url_get;
1.78 martynas 823: #endif /* !SMALL */
1.69 jsg 824: default:
1.1 millert 825: warnx("Error retrieving file: %s", cp);
1.6 millert 826: goto cleanup_url_get;
1.1 millert 827: }
828:
829: /*
830: * Read the rest of the header.
831: */
1.40 fgsch 832: free(buf);
833: filesize = -1;
834:
1.62 ray 835: for (;;) {
1.134 jsing 836: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 837: warn("Receiving HTTP reply");
838: goto cleanup_url_get;
839: }
1.61 deraadt 840:
1.40 fgsch 841: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
842: buf[--len] = '\0';
843: if (len == 0)
1.1 millert 844: break;
1.80 martynas 845: #ifndef SMALL
1.40 fgsch 846: if (debug)
847: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 848: #endif /* !SMALL */
1.1 millert 849:
1.40 fgsch 850: /* Look for some headers */
851: cp = buf;
1.1 millert 852: #define CONTENTLEN "Content-Length: "
1.40 fgsch 853: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
1.104 sthen 854: size_t s;
1.40 fgsch 855: cp += sizeof(CONTENTLEN) - 1;
1.111 deraadt 856: if ((s = strcspn(cp, " \t")))
1.104 sthen 857: *(cp+s) = 0;
1.58 grunk 858: filesize = strtonum(cp, 0, LLONG_MAX, &errstr);
859: if (errstr != NULL)
1.40 fgsch 860: goto improper;
1.75 martynas 861: #ifndef SMALL
1.90 martynas 862: if (restart_point)
1.75 martynas 863: filesize += restart_point;
1.78 martynas 864: #endif /* !SMALL */
1.40 fgsch 865: #define LOCATION "Location: "
866: } else if (isredirect &&
867: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
868: cp += sizeof(LOCATION) - 1;
1.144 sthen 869: /*
870: * If there is a colon before the first slash, this URI
871: * is not relative. RFC 3986 4.2
872: */
873: if (cp[strcspn(cp, ":/")] != ':') {
1.102 halex 874: #ifdef SMALL
875: errx(1, "Relative redirect not supported");
876: #else /* SMALL */
1.144 sthen 877: /* XXX doesn't handle protocol-relative URIs */
1.102 halex 878: if (*cp == '/') {
879: locbase = NULL;
880: cp++;
881: } else {
882: locbase = strdup(path);
883: if (locbase == NULL)
884: errx(1, "Can't allocate memory"
885: " for location base");
886: loctail = strchr(locbase, '#');
887: if (loctail != NULL)
888: *loctail = '\0';
889: loctail = strchr(locbase, '?');
890: if (loctail != NULL)
891: *loctail = '\0';
892: loctail = strrchr(locbase, '/');
893: if (loctail == NULL) {
894: free(locbase);
895: locbase = NULL;
896: } else
897: loctail[1] = '\0';
898: }
899: /* Contruct URL from relative redirect */
900: if (asprintf(&redirurl, "%s%s%s%s/%s%s",
901: scheme, full_host,
902: portnum ? ":" : "",
903: portnum ? portnum : "",
904: locbase ? locbase : "",
905: cp) == -1)
906: errx(1, "Cannot build "
907: "redirect URL");
908: free(locbase);
909: #endif /* SMALL */
910: } else if ((redirurl = strdup(cp)) == NULL)
911: errx(1, "Cannot allocate memory for URL");
912: loctail = strchr(redirurl, '#');
913: if (loctail != NULL)
914: *loctail = '\0';
1.40 fgsch 915: if (verbose)
1.102 halex 916: fprintf(ttyout, "Redirected to %s\n", redirurl);
1.165 ! procter 917: if (fin != NULL) {
1.40 fgsch 918: fclose(fin);
1.165 ! procter 919: fin = NULL;
! 920: }
! 921: if (s != -1) {
1.40 fgsch 922: close(s);
1.165 ! procter 923: s = -1;
! 924: }
1.157 deraadt 925: rval = url_get(redirurl, proxyenv, savefile, lastfile);
1.102 halex 926: free(redirurl);
927: goto cleanup_url_get;
1.40 fgsch 928: }
1.108 tobias 929: free(buf);
1.1 millert 930: }
931:
1.17 millert 932: /* Open the output file. */
1.100 halex 933: if (!pipeout) {
1.75 martynas 934: #ifndef SMALL
935: if (resume)
1.83 martynas 936: out = open(savefile, O_CREAT | O_WRONLY | O_APPEND,
937: 0666);
1.75 martynas 938: else
1.78 martynas 939: #endif /* !SMALL */
1.75 martynas 940: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC,
941: 0666);
1.10 deraadt 942: if (out < 0) {
943: warn("Can't open %s", savefile);
944: goto cleanup_url_get;
945: }
1.157 deraadt 946: } else {
1.17 millert 947: out = fileno(stdout);
1.157 deraadt 948: #ifdef SMALL
949: if (lastfile) {
950: if (pledge("stdio tty", NULL) == -1)
951: err(1, "pledge");
952: }
953: #endif
954: }
1.1 millert 955:
956: /* Trap signals */
957: oldintr = NULL;
1.97 martynas 958: oldinti = NULL;
1.1 millert 959: if (setjmp(httpabort)) {
960: if (oldintr)
1.2 millert 961: (void)signal(SIGINT, oldintr);
1.97 martynas 962: if (oldinti)
963: (void)signal(SIGINFO, oldinti);
1.6 millert 964: goto cleanup_url_get;
1.1 millert 965: }
966: oldintr = signal(SIGINT, aborthttp);
967:
968: bytes = 0;
969: hashbytes = mark;
1.84 martynas 970: progressmeter(-1, path);
1.43 millert 971:
972: free(buf);
1.1 millert 973:
974: /* Finally, suck down the file. */
1.113 tedu 975: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 976: errx(1, "Can't allocate memory for transfer buffer");
1.1 millert 977: i = 0;
1.61 deraadt 978: len = 1;
1.97 martynas 979: oldinti = signal(SIGINFO, psummary);
1.61 deraadt 980: while (len > 0) {
1.134 jsing 981: len = ftp_read(fin, tls, buf, buflen);
1.1 millert 982: bytes += len;
1.61 deraadt 983: for (cp = buf, wlen = len; wlen > 0; wlen -= i, cp += i) {
984: if ((i = write(out, cp, wlen)) == -1) {
1.1 millert 985: warn("Writing %s", savefile);
1.97 martynas 986: signal(SIGINFO, oldinti);
1.6 millert 987: goto cleanup_url_get;
1.1 millert 988: }
989: else if (i == 0)
990: break;
991: }
992: if (hash && !progress) {
993: while (bytes >= hashbytes) {
1.10 deraadt 994: (void)putc('#', ttyout);
1.1 millert 995: hashbytes += mark;
996: }
1.10 deraadt 997: (void)fflush(ttyout);
1.1 millert 998: }
999: }
1.97 martynas 1000: signal(SIGINFO, oldinti);
1.1 millert 1001: if (hash && !progress && bytes > 0) {
1002: if (bytes < mark)
1.10 deraadt 1003: (void)putc('#', ttyout);
1004: (void)putc('\n', ttyout);
1005: (void)fflush(ttyout);
1.1 millert 1006: }
1007: if (len != 0) {
1008: warn("Reading from socket");
1.6 millert 1009: goto cleanup_url_get;
1.1 millert 1010: }
1.84 martynas 1011: progressmeter(1, NULL);
1.75 martynas 1012: if (
1013: #ifndef SMALL
1014: !resume &&
1.78 martynas 1015: #endif /* !SMALL */
1.75 martynas 1016: filesize != -1 && len == 0 && bytes != filesize) {
1.24 deraadt 1017: if (verbose)
1018: fputs("Read short file.\n", ttyout);
1019: goto cleanup_url_get;
1020: }
1021:
1.1 millert 1022: if (verbose)
1.97 martynas 1023: ptransfer(0);
1.2 millert 1024: (void)signal(SIGINT, oldintr);
1.1 millert 1025:
1.40 fgsch 1026: rval = 0;
1027: goto cleanup_url_get;
1.1 millert 1028:
1.14 millert 1029: noftpautologin:
1030: warnx(
1031: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
1032: goto cleanup_url_get;
1033:
1.1 millert 1034: improper:
1.8 millert 1035: warnx("Improper response from %s", host);
1.14 millert 1036:
1.6 millert 1037: cleanup_url_get:
1.154 deraadt 1038: #ifndef NOSSL
1.134 jsing 1039: if (tls != NULL) {
1.163 sunil 1040: do {
1041: i = tls_close(tls);
1042: } while (i == TLS_WANT_POLLIN || i == TLS_WANT_POLLOUT);
1.134 jsing 1043: tls_free(tls);
1.61 deraadt 1044: }
1.102 halex 1045: free(full_host);
1.128 jca 1046: free(sslhost);
1.154 deraadt 1047: #endif /* !NOSSL */
1.165 ! procter 1048: if (fin != NULL) {
1.40 fgsch 1049: fclose(fin);
1.165 ! procter 1050: fin = NULL;
! 1051: }
! 1052: if (s != -1) {
1.1 millert 1053: close(s);
1.165 ! procter 1054: s = -1;
! 1055: }
1.162 sthen 1056: if (out >= 0 && out != fileno(stdout))
1057: close(out);
1.67 steven 1058: free(buf);
1.136 bluhm 1059: free(proxyhost);
1.67 steven 1060: free(proxyurl);
1.62 ray 1061: free(newline);
1.123 guenther 1062: free(credentials);
1.40 fgsch 1063: return (rval);
1.1 millert 1064: }
1065:
1066: /*
1067: * Abort a http retrieval
1068: */
1.51 deraadt 1069: /* ARGSUSED */
1.1 millert 1070: void
1.51 deraadt 1071: aborthttp(int signo)
1.1 millert 1072: {
1073:
1074: alarmtimer(0);
1.10 deraadt 1075: fputs("\nhttp fetch aborted.\n", ttyout);
1076: (void)fflush(ttyout);
1.1 millert 1077: longjmp(httpabort, 1);
1078: }
1079:
1080: /*
1.22 deraadt 1081: * Abort a http retrieval
1082: */
1.51 deraadt 1083: /* ARGSUSED */
1.22 deraadt 1084: void
1.51 deraadt 1085: abortfile(int signo)
1.22 deraadt 1086: {
1087:
1088: alarmtimer(0);
1089: fputs("\nfile fetch aborted.\n", ttyout);
1090: (void)fflush(ttyout);
1091: longjmp(httpabort, 1);
1092: }
1093:
1094: /*
1.1 millert 1095: * Retrieve multiple files from the command line, transferring
1096: * files of the form "host:path", "ftp://host/path" using the
1097: * ftp protocol, and files of the form "http://host/path" using
1098: * the http protocol.
1.2 millert 1099: * If path has a trailing "/", then return (-1);
1.1 millert 1100: * the path will be cd-ed into and the connection remains open,
1101: * and the function will return -1 (to indicate the connection
1102: * is alive).
1103: * If an error occurs the return value will be the offset+1 in
1104: * argv[] of the file that caused a problem (i.e, argv[x]
1105: * returns x+1)
1106: * Otherwise, 0 is returned if all files retrieved successfully.
1107: */
1108: int
1.50 deraadt 1109: auto_fetch(int argc, char *argv[], char *outfile)
1.1 millert 1110: {
1111: char *xargv[5];
1.62 ray 1112: char *cp, *url, *host, *dir, *file, *portnum;
1113: char *username, *pass, *pathstart;
1.6 millert 1114: char *ftpproxy, *httpproxy;
1.157 deraadt 1115: int rval, xargc, lastfile;
1.14 millert 1116: volatile int argpos;
1.49 krw 1117: int dirhasglob, filehasglob, oautologin;
1.137 deraadt 1118: char rempath[PATH_MAX];
1.1 millert 1119:
1120: argpos = 0;
1121:
1122: if (setjmp(toplevel)) {
1123: if (connected)
1124: disconnect(0, NULL);
1.2 millert 1125: return (argpos + 1);
1.1 millert 1126: }
1.3 millert 1127: (void)signal(SIGINT, (sig_t)intr);
1128: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 1129:
1.45 millert 1130: if ((ftpproxy = getenv(FTP_PROXY)) != NULL && *ftpproxy == '\0')
1131: ftpproxy = NULL;
1132: if ((httpproxy = getenv(HTTP_PROXY)) != NULL && *httpproxy == '\0')
1133: httpproxy = NULL;
1.6 millert 1134:
1.1 millert 1135: /*
1136: * Loop through as long as there's files to fetch.
1137: */
1.123 guenther 1138: username = pass = NULL;
1.62 ray 1139: for (rval = 0; (rval == 0) && (argpos < argc); free(url), argpos++) {
1.1 millert 1140: if (strchr(argv[argpos], ':') == NULL)
1141: break;
1.123 guenther 1142:
1143: free(username);
1144: free(pass);
1.62 ray 1145: host = dir = file = portnum = username = pass = NULL;
1.1 millert 1146:
1.157 deraadt 1147: lastfile = (argv[argpos+1] == NULL);
1148:
1.1 millert 1149: /*
1150: * We muck with the string, so we make a copy.
1151: */
1.62 ray 1152: url = strdup(argv[argpos]);
1153: if (url == NULL)
1.1 millert 1154: errx(1, "Can't allocate memory for auto-fetch.");
1155:
1156: /*
1157: * Try HTTP URL-style arguments first.
1158: */
1.62 ray 1159: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.154 deraadt 1160: #ifndef NOSSL
1.61 deraadt 1161: /* even if we compiled without SSL, url_get will check */
1.62 ray 1162: strncasecmp(url, HTTPS_URL, sizeof(HTTPS_URL) -1) == 0 ||
1.154 deraadt 1163: #endif /* !NOSSL */
1.62 ray 1164: strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1.54 fgsch 1165: redirect_loop = 0;
1.157 deraadt 1166: if (url_get(url, httpproxy, outfile, lastfile) == -1)
1.1 millert 1167: rval = argpos + 1;
1168: continue;
1169: }
1170:
1171: /*
1.6 millert 1172: * Try FTP URL-style arguments next. If ftpproxy is
1173: * set, use url_get() instead of standard ftp.
1174: * Finally, try host:file.
1.1 millert 1175: */
1.62 ray 1176: host = url;
1177: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 1178: char *passend, *passagain, *userend;
1.31 itojun 1179:
1.6 millert 1180: if (ftpproxy) {
1.157 deraadt 1181: if (url_get(url, ftpproxy, outfile, lastfile) == -1)
1.6 millert 1182: rval = argpos + 1;
1183: continue;
1184: }
1.1 millert 1185: host += sizeof(FTP_URL) - 1;
1.8 millert 1186: dir = strchr(host, '/');
1.1 millert 1187:
1.8 millert 1188: /* Look for [user:pass@]host[:port] */
1.31 itojun 1189:
1190: /* check if we have "user:pass@" */
1.37 heko 1191: userend = strchr(host, ':');
1.31 itojun 1192: passend = strchr(host, '@');
1193: if (passend && userend && userend < passend &&
1194: (!dir || passend < dir)) {
1.62 ray 1195: username = host;
1.31 itojun 1196: pass = userend + 1;
1197: host = passend + 1;
1198: *userend = *passend = '\0';
1.37 heko 1199: passagain = strchr(host, '@');
1.42 deraadt 1200: if (strchr(pass, '@') != NULL ||
1.37 heko 1201: (passagain != NULL && passagain < dir)) {
1202: warnx(at_encoding_warning);
1.123 guenther 1203: username = pass = NULL;
1.37 heko 1204: goto bad_ftp_url;
1.42 deraadt 1205: }
1.31 itojun 1206:
1.77 martynas 1207: if (EMPTYSTRING(username)) {
1.11 millert 1208: bad_ftp_url:
1.31 itojun 1209: warnx("Invalid URL: %s", argv[argpos]);
1210: rval = argpos + 1;
1.123 guenther 1211: username = pass = NULL;
1.31 itojun 1212: continue;
1213: }
1.62 ray 1214: username = urldecode(username);
1.37 heko 1215: pass = urldecode(pass);
1.8 millert 1216: }
1.31 itojun 1217:
1218: /* check [host]:port, or [host] */
1219: if (host[0] == '[') {
1220: cp = strchr(host, ']');
1221: if (cp && (!dir || cp < dir)) {
1222: if (cp + 1 == dir || cp[1] == ':') {
1223: host++;
1224: *cp++ = '\0';
1225: } else
1226: cp = NULL;
1227: } else
1228: cp = host;
1.25 itojun 1229: } else
1230: cp = host;
1.31 itojun 1231:
1232: /* split off host[:port] if there is */
1233: if (cp) {
1234: portnum = strchr(cp, ':');
1.52 henning 1235: pathstart = strchr(cp, '/');
1236: /* : in path is not a port # indicator */
1237: if (portnum && pathstart &&
1238: pathstart < portnum)
1239: portnum = NULL;
1240:
1.31 itojun 1241: if (!portnum)
1242: ;
1243: else {
1244: if (!dir)
1245: ;
1246: else if (portnum + 1 < dir) {
1247: *portnum++ = '\0';
1248: /*
1249: * XXX should check if portnum
1250: * is decimal number
1251: */
1252: } else {
1253: /* empty portnum */
1254: goto bad_ftp_url;
1255: }
1256: }
1257: } else
1258: portnum = NULL;
1.8 millert 1259: } else { /* classic style `host:file' */
1260: dir = strchr(host, ':');
1261: }
1.1 millert 1262: if (EMPTYSTRING(host)) {
1263: rval = argpos + 1;
1264: continue;
1265: }
1266:
1267: /*
1.9 millert 1268: * If dir is NULL, the file wasn't specified
1.1 millert 1269: * (URL looked something like ftp://host)
1270: */
1.8 millert 1271: if (dir != NULL)
1272: *dir++ = '\0';
1.1 millert 1273:
1274: /*
1275: * Extract the file and (if present) directory name.
1276: */
1.42 deraadt 1277: if (!EMPTYSTRING(dir)) {
1.8 millert 1278: cp = strrchr(dir, '/');
1.1 millert 1279: if (cp != NULL) {
1280: *cp++ = '\0';
1281: file = cp;
1282: } else {
1283: file = dir;
1284: dir = NULL;
1285: }
1286: }
1.80 martynas 1287: #ifndef SMALL
1.1 millert 1288: if (debug)
1.42 deraadt 1289: fprintf(ttyout,
1290: "user %s:%s host %s port %s dir %s file %s\n",
1.76 martynas 1291: username, pass ? "XXXX" : NULL, host, portnum,
1292: dir, file);
1.80 martynas 1293: #endif /* !SMALL */
1.1 millert 1294:
1295: /*
1.49 krw 1296: * Set up the connection.
1.1 millert 1297: */
1.49 krw 1298: if (connected)
1299: disconnect(0, NULL);
1300: xargv[0] = __progname;
1301: xargv[1] = host;
1.8 millert 1302: xargv[2] = NULL;
1.49 krw 1303: xargc = 2;
1304: if (!EMPTYSTRING(portnum)) {
1305: xargv[2] = portnum;
1306: xargv[3] = NULL;
1307: xargc = 3;
1308: }
1309: oautologin = autologin;
1.88 martynas 1310: if (username == NULL)
1.89 halex 1311: anonftp = 1;
1312: else {
1313: anonftp = 0;
1.49 krw 1314: autologin = 0;
1.89 halex 1315: }
1.49 krw 1316: setpeer(xargc, xargv);
1317: autologin = oautologin;
1.87 martynas 1318: if (connected == 0 ||
1319: (connected == 1 && autologin && (username == NULL ||
1320: !ftp_login(host, username, pass)))) {
1.49 krw 1321: warnx("Can't connect or login to host `%s'", host);
1.8 millert 1322: rval = argpos + 1;
1323: continue;
1.1 millert 1324: }
1.49 krw 1325:
1326: /* Always use binary transfers. */
1327: setbinary(0, NULL);
1.1 millert 1328:
1.4 millert 1329: dirhasglob = filehasglob = 0;
1330: if (doglob) {
1.42 deraadt 1331: if (!EMPTYSTRING(dir) &&
1.4 millert 1332: strpbrk(dir, "*?[]{}") != NULL)
1333: dirhasglob = 1;
1.42 deraadt 1334: if (!EMPTYSTRING(file) &&
1.4 millert 1335: strpbrk(file, "*?[]{}") != NULL)
1336: filehasglob = 1;
1337: }
1338:
1.1 millert 1339: /* Change directories, if necessary. */
1.42 deraadt 1340: if (!EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 1341: xargv[0] = "cd";
1342: xargv[1] = dir;
1343: xargv[2] = NULL;
1344: cd(2, xargv);
1.42 deraadt 1345: if (!dirchange) {
1.1 millert 1346: rval = argpos + 1;
1347: continue;
1348: }
1349: }
1350:
1351: if (EMPTYSTRING(file)) {
1.86 martynas 1352: #ifndef SMALL
1.1 millert 1353: rval = -1;
1.86 martynas 1354: #else /* !SMALL */
1355: recvrequest("NLST", "-", NULL, "w", 0, 0);
1356: rval = 0;
1357: #endif /* !SMALL */
1.1 millert 1358: continue;
1359: }
1360:
1.21 marc 1361: if (verbose)
1.10 deraadt 1362: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 1363:
1.4 millert 1364: if (dirhasglob) {
1365: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
1366: file = rempath;
1367: }
1368:
1369: /* Fetch the file(s). */
1.10 deraadt 1370: xargc = 2;
1.1 millert 1371: xargv[0] = "get";
1372: xargv[1] = file;
1373: xargv[2] = NULL;
1.4 millert 1374: if (dirhasglob || filehasglob) {
1375: int ointeractive;
1376:
1377: ointeractive = interactive;
1378: interactive = 0;
1379: xargv[0] = "mget";
1.78 martynas 1380: #ifndef SMALL
1381: if (resume) {
1382: xargc = 3;
1383: xargv[1] = "-c";
1384: xargv[2] = file;
1385: xargv[3] = NULL;
1386: }
1387: #endif /* !SMALL */
1.10 deraadt 1388: mget(xargc, xargv);
1.5 millert 1389: interactive = ointeractive;
1.10 deraadt 1390: } else {
1.17 millert 1391: if (outfile != NULL) {
1392: xargv[2] = outfile;
1393: xargv[3] = NULL;
1.10 deraadt 1394: xargc++;
1395: }
1.75 martynas 1396: #ifndef SMALL
1397: if (resume)
1398: reget(xargc, xargv);
1399: else
1.78 martynas 1400: #endif /* !SMALL */
1.75 martynas 1401: get(xargc, xargv);
1.10 deraadt 1402: }
1.1 millert 1403:
1.4 millert 1404: if ((code / 100) != COMPLETE)
1.1 millert 1405: rval = argpos + 1;
1406: }
1407: if (connected && rval != -1)
1408: disconnect(0, NULL);
1409: return (rval);
1.37 heko 1410: }
1411:
1412: char *
1.50 deraadt 1413: urldecode(const char *str)
1.37 heko 1414: {
1.53 deraadt 1415: char *ret, c;
1416: int i, reallen;
1.37 heko 1417:
1.53 deraadt 1418: if (str == NULL)
1419: return NULL;
1420: if ((ret = malloc(strlen(str)+1)) == NULL)
1421: err(1, "Can't allocate memory for URL decoding");
1422: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
1423: c = str[i];
1424: if (c == '+') {
1425: *ret = ' ';
1426: continue;
1427: }
1.61 deraadt 1428:
1429: /* Cannot use strtol here because next char
1430: * after %xx may be a digit.
1431: */
1.143 guenther 1432: if (c == '%' && isxdigit((unsigned char)str[i+1]) &&
1433: isxdigit((unsigned char)str[i+2])) {
1.53 deraadt 1434: *ret = hextochar(&str[i+1]);
1435: i+=2;
1436: continue;
1437: }
1438: *ret = c;
1439: }
1440: *ret = '\0';
1441:
1442: return ret-reallen;
1.123 guenther 1443: }
1444:
1445: char *
1446: recode_credentials(const char *userinfo)
1447: {
1448: char *ui, *creds;
1449: size_t ulen, credsize;
1450:
1451: /* url-decode the user and pass */
1452: ui = urldecode(userinfo);
1453:
1454: ulen = strlen(ui);
1455: credsize = (ulen + 2) / 3 * 4 + 1;
1456: creds = malloc(credsize);
1457: if (creds == NULL)
1458: errx(1, "out of memory");
1459: if (b64_ntop(ui, ulen, creds, credsize) == -1)
1460: errx(1, "error in base64 encoding");
1461: free(ui);
1462: return (creds);
1.37 heko 1463: }
1464:
1465: char
1.50 deraadt 1466: hextochar(const char *str)
1.37 heko 1467: {
1.143 guenther 1468: unsigned char c, ret;
1.37 heko 1469:
1.53 deraadt 1470: c = str[0];
1471: ret = c;
1472: if (isalpha(c))
1473: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1474: else
1475: ret -= '0';
1476: ret *= 16;
1477:
1478: c = str[1];
1479: ret += c;
1480: if (isalpha(c))
1481: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1482: else
1483: ret -= '0';
1484: return ret;
1.25 itojun 1485: }
1486:
1487: int
1.50 deraadt 1488: isurl(const char *p)
1.25 itojun 1489: {
1.27 millert 1490:
1.26 deraadt 1491: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
1492: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.154 deraadt 1493: #ifndef NOSSL
1.61 deraadt 1494: strncasecmp(p, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0 ||
1.154 deraadt 1495: #endif /* !NOSSL */
1.27 millert 1496: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
1497: strstr(p, ":/"))
1498: return (1);
1499: return (0);
1.1 millert 1500: }
1.61 deraadt 1501:
1502: char *
1.134 jsing 1503: ftp_readline(FILE *fp, struct tls *tls, size_t *lenp)
1.61 deraadt 1504: {
1505: if (fp != NULL)
1506: return fparseln(fp, lenp, NULL, "\0\0\0", 0);
1.154 deraadt 1507: #ifndef NOSSL
1.134 jsing 1508: else if (tls != NULL)
1509: return SSL_readline(tls, lenp);
1.154 deraadt 1510: #endif /* !NOSSL */
1.61 deraadt 1511: else
1512: return NULL;
1513: }
1514:
1.65 ray 1515: size_t
1.134 jsing 1516: ftp_read(FILE *fp, struct tls *tls, char *buf, size_t len)
1.61 deraadt 1517: {
1.154 deraadt 1518: #ifndef NOSSL
1.161 guenther 1519: ssize_t tret;
1.152 krw 1520: #endif
1.142 jsing 1521: size_t ret = 0;
1522:
1.61 deraadt 1523: if (fp != NULL)
1524: ret = fread(buf, sizeof(char), len, fp);
1.154 deraadt 1525: #ifndef NOSSL
1.142 jsing 1526: else if (tls != NULL) {
1.161 guenther 1527: do {
1528: tret = tls_read(tls, buf, len);
1529: } while (tret == TLS_WANT_POLLIN || tret == TLS_WANT_POLLOUT);
1530: if (tret < 0)
1.153 jsing 1531: errx(1, "SSL read error: %s", tls_error(tls));
1.161 guenther 1532: ret = (size_t)tret;
1.65 ray 1533: }
1.154 deraadt 1534: #endif /* !NOSSL */
1.61 deraadt 1535: return (ret);
1536: }
1537:
1538: int
1.134 jsing 1539: ftp_printf(FILE *fp, struct tls *tls, const char *fmt, ...)
1.61 deraadt 1540: {
1541: int ret;
1542: va_list ap;
1543:
1544: va_start(ap, fmt);
1545:
1546: if (fp != NULL)
1547: ret = vfprintf(fp, fmt, ap);
1.154 deraadt 1548: #ifndef NOSSL
1.134 jsing 1549: else if (tls != NULL)
1550: ret = SSL_vprintf(tls, fmt, ap);
1.154 deraadt 1551: #endif /* !NOSSL */
1.61 deraadt 1552: else
1.92 jsg 1553: ret = 0;
1.61 deraadt 1554:
1555: va_end(ap);
1.136 bluhm 1556: #ifndef SMALL
1557: if (debug) {
1558: va_start(ap, fmt);
1559: ret = vfprintf(ttyout, fmt, ap);
1560: va_end(ap);
1561: }
1562: #endif /* !SMALL */
1.61 deraadt 1563: return (ret);
1564: }
1565:
1.154 deraadt 1566: #ifndef NOSSL
1.61 deraadt 1567: int
1.134 jsing 1568: SSL_vprintf(struct tls *tls, const char *fmt, va_list ap)
1.61 deraadt 1569: {
1.139 bluhm 1570: char *string, *buf;
1.141 beck 1571: size_t len;
1.61 deraadt 1572: int ret;
1573:
1574: if ((ret = vasprintf(&string, fmt, ap)) == -1)
1575: return ret;
1.139 bluhm 1576: buf = string;
1577: len = ret;
1578: while (len > 0) {
1.141 beck 1579: ret = tls_write(tls, buf, len);
1580: if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT)
1.139 bluhm 1581: continue;
1582: if (ret < 0)
1.153 jsing 1583: errx(1, "SSL write error: %s", tls_error(tls));
1.141 beck 1584: buf += ret;
1585: len -= ret;
1.139 bluhm 1586: }
1.61 deraadt 1587: free(string);
1588: return ret;
1589: }
1590:
1591: char *
1.134 jsing 1592: SSL_readline(struct tls *tls, size_t *lenp)
1.61 deraadt 1593: {
1.141 beck 1594: size_t i, len;
1.61 deraadt 1595: char *buf, *q, c;
1.109 sthen 1596: int ret;
1.61 deraadt 1597:
1598: len = 128;
1599: if ((buf = malloc(len)) == NULL)
1600: errx(1, "Can't allocate memory for transfer buffer");
1601: for (i = 0; ; i++) {
1602: if (i >= len - 1) {
1.132 doug 1603: if ((q = reallocarray(buf, len, 2)) == NULL)
1.61 deraadt 1604: errx(1, "Can't expand transfer buffer");
1605: buf = q;
1606: len *= 2;
1607: }
1.161 guenther 1608: do {
1609: ret = tls_read(tls, &c, 1);
1610: } while (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT);
1.142 jsing 1611: if (ret < 0)
1.140 jsing 1612: errx(1, "SSL read error: %s", tls_error(tls));
1.126 jsing 1613:
1.61 deraadt 1614: buf[i] = c;
1.145 martijn 1615: if (c == '\n') {
1616: buf[i] = '\0';
1.61 deraadt 1617: break;
1.145 martijn 1618: }
1.61 deraadt 1619: }
1620: *lenp = i;
1621: return (buf);
1622: }
1623:
1624: int
1.81 espie 1625: proxy_connect(int socket, char *host, char *cookie)
1.61 deraadt 1626: {
1.66 ray 1627: int l;
1.61 deraadt 1628: char buf[1024];
1629: char *connstr, *hosttail, *port;
1630:
1631: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
1632: (hosttail[1] == '\0' || hosttail[1] == ':')) {
1633: host++;
1634: *hosttail++ = '\0';
1635: } else
1636: hosttail = host;
1637:
1638: port = strrchr(hosttail, ':'); /* find portnum */
1639: if (port != NULL)
1640: *port++ = '\0';
1641: if (!port)
1642: port = "443";
1643:
1.81 espie 1644: if (cookie) {
1645: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n"
1646: "Proxy-Authorization: Basic %s\r\n%s\r\n\r\n",
1647: host, port, cookie, HTTP_USER_AGENT);
1648: } else {
1649: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n%s\r\n\r\n",
1650: host, port, HTTP_USER_AGENT);
1651: }
1652:
1.66 ray 1653: if (l == -1)
1.61 deraadt 1654: errx(1, "Could not allocate memory to assemble connect string!");
1.80 martynas 1655: #ifndef SMALL
1.68 ray 1656: if (debug)
1657: printf("%s", connstr);
1.80 martynas 1658: #endif /* !SMALL */
1.66 ray 1659: if (write(socket, connstr, l) != l)
1.68 ray 1660: err(1, "Could not send connect string");
1.61 deraadt 1661: read(socket, &buf, sizeof(buf)); /* only proxy header XXX: error handling? */
1.71 ray 1662: free(connstr);
1.61 deraadt 1663: return(200);
1664: }
1.158 jca 1665: #endif /* !NOSSL */
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