Annotation of src/usr.bin/ftp/fetch.c, Revision 1.148
1.148 ! millert 1: /* $OpenBSD: fetch.c,v 1.147 2016/05/27 15:16:16 jsing 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';
473:
1.80 martynas 474: #ifndef SMALL
1.102 halex 475: if (full_host == NULL)
476: if ((full_host = strdup(host)) == NULL)
477: errx(1, "Cannot allocate memory for hostname");
1.1 millert 478: if (debug)
1.106 haesbaer 479: fprintf(ttyout, "host %s, port %s, path %s, "
480: "save as %s, auth %s.\n",
1.123 guenther 481: host, portnum, path, savefile, credentials);
1.80 martynas 482: #endif /* !SMALL */
1.1 millert 483:
1.25 itojun 484: memset(&hints, 0, sizeof(hints));
1.39 deraadt 485: hints.ai_family = family;
1.25 itojun 486: hints.ai_socktype = SOCK_STREAM;
1.61 deraadt 487: #ifndef SMALL
488: port = portnum ? portnum : (ishttpsurl ? httpsport : httpport);
1.78 martynas 489: #else /* !SMALL */
1.25 itojun 490: port = portnum ? portnum : httpport;
1.78 martynas 491: #endif /* !SMALL */
1.25 itojun 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:
1.25 itojun 560: again:
1.148 ! millert 561: if (connect_sync(s, res->ai_addr, res->ai_addrlen) < 0) {
1.57 otto 562: save_errno = errno;
1.25 itojun 563: close(s);
1.57 otto 564: errno = save_errno;
1.25 itojun 565: s = -1;
566: cause = "connect";
1.19 deraadt 567: continue;
568: }
1.25 itojun 569:
1.29 itojun 570: /* get port in numeric */
571: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
572: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
573: port = pbuf;
574: else
575: port = NULL;
576:
1.61 deraadt 577: #ifndef SMALL
578: if (proxyenv && sslhost)
1.123 guenther 579: proxy_connect(s, sslhost, credentials);
1.78 martynas 580: #endif /* !SMALL */
1.25 itojun 581: break;
582: }
583: freeaddrinfo(res0);
1.105 haesbaer 584: #ifndef SMALL
585: if (srcaddr)
586: freeaddrinfo(ares);
587: #endif /* !SMALL */
1.25 itojun 588: if (s < 0) {
1.33 millert 589: warn("%s", cause);
1.6 millert 590: goto cleanup_url_get;
1.1 millert 591: }
592:
1.61 deraadt 593: #ifndef SMALL
594: if (ishttpsurl) {
595: if (proxyenv && sslpath) {
596: ishttpsurl = 0;
1.62 ray 597: proxyurl = NULL;
1.61 deraadt 598: path = sslpath;
599: }
1.131 jca 600: if (sslhost == NULL) {
601: sslhost = strdup(host);
602: if (sslhost == NULL)
603: errx(1, "Can't allocate memory for https host.");
1.116 jca 604: }
1.134 jsing 605: if ((tls = tls_client()) == NULL) {
1.126 jsing 606: fprintf(ttyout, "failed to create SSL client\n");
1.61 deraadt 607: goto cleanup_url_get;
608: }
1.134 jsing 609: if (tls_configure(tls, tls_config) != 0) {
1.126 jsing 610: fprintf(ttyout, "SSL configuration failure: %s\n",
1.134 jsing 611: tls_error(tls));
1.61 deraadt 612: goto cleanup_url_get;
1.117 jca 613: }
1.134 jsing 614: if (tls_connect_socket(tls, s, sslhost) != 0) {
615: fprintf(ttyout, "SSL failure: %s\n", tls_error(tls));
1.72 ray 616: goto cleanup_url_get;
1.118 jca 617: }
1.61 deraadt 618: } else {
619: fin = fdopen(s, "r+");
620: }
1.78 martynas 621: #else /* !SMALL */
1.40 fgsch 622: fin = fdopen(s, "r+");
1.78 martynas 623: #endif /* !SMALL */
1.40 fgsch 624:
1.55 fgsch 625: if (verbose)
626: fprintf(ttyout, "Requesting %s", origline);
1.95 martynas 627:
1.1 millert 628: /*
1.40 fgsch 629: * Construct and send the request. Proxy requests don't want leading /.
1.1 millert 630: */
1.74 pyr 631: #ifndef SMALL
632: cookie_get(host, path, ishttpsurl, &buf);
1.78 martynas 633: #endif /* !SMALL */
1.95 martynas 634:
635: epath = url_encode(path);
1.62 ray 636: if (proxyurl) {
1.55 fgsch 637: if (verbose)
1.81 espie 638: fprintf(ttyout, " (via %s)\n", proxyurl);
1.32 itojun 639: /*
640: * Host: directive must use the destination host address for
1.136 bluhm 641: * the original URI (path).
1.32 itojun 642: */
1.123 guenther 643: if (credentials)
1.134 jsing 644: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
1.136 bluhm 645: "Proxy-Authorization: Basic %s\r\n"
646: "Host: %s\r\n%s%s\r\n\r\n",
647: epath, credentials,
648: proxyhost, buf ? buf : "", httpuseragent);
1.73 drahn 649: else
1.136 bluhm 650: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
651: "Host: %s\r\n%s%s\r\n\r\n",
652: epath, proxyhost, buf ? buf : "", httpuseragent);
1.28 itojun 653: } else {
1.90 martynas 654: #ifndef SMALL
655: if (resume) {
656: struct stat stbuf;
657:
658: if (stat(savefile, &stbuf) == 0)
659: restart_point = stbuf.st_size;
660: else
661: restart_point = 0;
662: }
1.123 guenther 663: if (credentials) {
1.134 jsing 664: ftp_printf(fin, tls,
1.106 haesbaer 665: "GET /%s %s\r\nAuthorization: Basic %s\r\nHost: ",
666: epath, restart_point ?
667: "HTTP/1.1\r\nConnection: close" : "HTTP/1.0",
1.123 guenther 668: credentials);
669: free(credentials);
670: credentials = NULL;
1.106 haesbaer 671: } else
672: #endif /* SMALL */
1.134 jsing 673: ftp_printf(fin, tls, "GET /%s %s\r\nHost: ", epath,
1.107 haesbaer 674: #ifndef SMALL
675: restart_point ? "HTTP/1.1\r\nConnection: close" :
676: #endif /* !SMALL */
677: "HTTP/1.0");
1.136 bluhm 678: if (proxyhost) {
679: ftp_printf(fin, tls, "%s", proxyhost);
680: port = NULL;
681: } else if (strchr(host, ':')) {
1.55 fgsch 682: /*
683: * strip off scoped address portion, since it's
684: * local to node
685: */
1.32 itojun 686: h = strdup(host);
687: if (h == NULL)
688: errx(1, "Can't allocate memory.");
689: if ((p = strchr(h, '%')) != NULL)
690: *p = '\0';
1.134 jsing 691: ftp_printf(fin, tls, "[%s]", h);
1.32 itojun 692: free(h);
1.55 fgsch 693: } else
1.134 jsing 694: ftp_printf(fin, tls, "%s", host);
1.55 fgsch 695:
696: /*
697: * Send port number only if it's specified and does not equal
698: * 80. Some broken HTTP servers get confused if you explicitly
699: * send them the port number.
700: */
1.61 deraadt 701: #ifndef SMALL
702: if (port && strcmp(port, (ishttpsurl ? "443" : "80")) != 0)
1.134 jsing 703: ftp_printf(fin, tls, ":%s", port);
1.90 martynas 704: if (restart_point)
1.134 jsing 705: ftp_printf(fin, tls, "\r\nRange: bytes=%lld-",
1.75 martynas 706: (long long)restart_point);
1.78 martynas 707: #else /* !SMALL */
1.55 fgsch 708: if (port && strcmp(port, "80") != 0)
1.134 jsing 709: ftp_printf(fin, tls, ":%s", port);
1.78 martynas 710: #endif /* !SMALL */
1.134 jsing 711: ftp_printf(fin, tls, "\r\n%s%s\r\n\r\n",
1.124 lteo 712: buf ? buf : "", httpuseragent);
1.55 fgsch 713: if (verbose)
714: fprintf(ttyout, "\n");
1.28 itojun 715: }
1.95 martynas 716: free(epath);
1.74 pyr 717:
718: #ifndef SMALL
719: free(buf);
1.78 martynas 720: #endif /* !SMALL */
1.74 pyr 721: buf = NULL;
722:
1.61 deraadt 723: if (fin != NULL && fflush(fin) == EOF) {
1.14 millert 724: warn("Writing HTTP request");
1.6 millert 725: goto cleanup_url_get;
1.1 millert 726: }
1.134 jsing 727: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 728: warn("Receiving HTTP reply");
729: goto cleanup_url_get;
1.1 millert 730: }
1.40 fgsch 731:
732: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
733: buf[--len] = '\0';
1.80 martynas 734: #ifndef SMALL
1.40 fgsch 735: if (debug)
736: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 737: #endif /* !SMALL */
1.40 fgsch 738:
1.1 millert 739: cp = strchr(buf, ' ');
740: if (cp == NULL)
741: goto improper;
742: else
743: cp++;
1.69 jsg 744:
745: strlcpy(ststr, cp, sizeof(ststr));
1.75 martynas 746: status = strtonum(ststr, 200, 416, &errstr);
1.69 jsg 747: if (errstr) {
748: warnx("Error retrieving file: %s", cp);
749: goto cleanup_url_get;
750: }
751:
752: switch (status) {
753: case 200: /* OK */
1.75 martynas 754: #ifndef SMALL
1.109 sthen 755: /*
1.98 phessler 756: * When we request a partial file, and we receive an HTTP 200
757: * it is a good indication that the server doesn't support
758: * range requests, and is about to send us the entire file.
759: * If the restart_point == 0, then we are not actually
760: * requesting a partial file, and an HTTP 200 is appropriate.
761: */
762: if (resume && restart_point != 0) {
763: warnx("Server does not support resume.");
764: restart_point = resume = 0;
765: }
1.101 halex 766: /* FALLTHROUGH */
1.75 martynas 767: case 206: /* Partial Content */
1.91 halex 768: #endif /* !SMALL */
1.69 jsg 769: break;
770: case 301: /* Moved Permanently */
771: case 302: /* Found */
772: case 303: /* See Other */
773: case 307: /* Temporary Redirect */
1.40 fgsch 774: isredirect++;
1.54 fgsch 775: if (redirect_loop++ > 10) {
776: warnx("Too many redirections requested");
777: goto cleanup_url_get;
778: }
1.69 jsg 779: break;
1.75 martynas 780: #ifndef SMALL
781: case 416: /* Requested Range Not Satisfiable */
782: warnx("File is already fully retrieved.");
783: goto cleanup_url_get;
1.78 martynas 784: #endif /* !SMALL */
1.69 jsg 785: default:
1.1 millert 786: warnx("Error retrieving file: %s", cp);
1.6 millert 787: goto cleanup_url_get;
1.1 millert 788: }
789:
790: /*
791: * Read the rest of the header.
792: */
1.40 fgsch 793: free(buf);
794: filesize = -1;
795:
1.62 ray 796: for (;;) {
1.134 jsing 797: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 798: warn("Receiving HTTP reply");
799: goto cleanup_url_get;
800: }
1.61 deraadt 801:
1.40 fgsch 802: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
803: buf[--len] = '\0';
804: if (len == 0)
1.1 millert 805: break;
1.80 martynas 806: #ifndef SMALL
1.40 fgsch 807: if (debug)
808: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 809: #endif /* !SMALL */
1.1 millert 810:
1.40 fgsch 811: /* Look for some headers */
812: cp = buf;
1.1 millert 813: #define CONTENTLEN "Content-Length: "
1.40 fgsch 814: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
1.104 sthen 815: size_t s;
1.40 fgsch 816: cp += sizeof(CONTENTLEN) - 1;
1.111 deraadt 817: if ((s = strcspn(cp, " \t")))
1.104 sthen 818: *(cp+s) = 0;
1.58 grunk 819: filesize = strtonum(cp, 0, LLONG_MAX, &errstr);
820: if (errstr != NULL)
1.40 fgsch 821: goto improper;
1.75 martynas 822: #ifndef SMALL
1.90 martynas 823: if (restart_point)
1.75 martynas 824: filesize += restart_point;
1.78 martynas 825: #endif /* !SMALL */
1.40 fgsch 826: #define LOCATION "Location: "
827: } else if (isredirect &&
828: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
829: cp += sizeof(LOCATION) - 1;
1.144 sthen 830: /*
831: * If there is a colon before the first slash, this URI
832: * is not relative. RFC 3986 4.2
833: */
834: if (cp[strcspn(cp, ":/")] != ':') {
1.102 halex 835: #ifdef SMALL
836: errx(1, "Relative redirect not supported");
837: #else /* SMALL */
1.144 sthen 838: /* XXX doesn't handle protocol-relative URIs */
1.102 halex 839: if (*cp == '/') {
840: locbase = NULL;
841: cp++;
842: } else {
843: locbase = strdup(path);
844: if (locbase == NULL)
845: errx(1, "Can't allocate memory"
846: " for location base");
847: loctail = strchr(locbase, '#');
848: if (loctail != NULL)
849: *loctail = '\0';
850: loctail = strchr(locbase, '?');
851: if (loctail != NULL)
852: *loctail = '\0';
853: loctail = strrchr(locbase, '/');
854: if (loctail == NULL) {
855: free(locbase);
856: locbase = NULL;
857: } else
858: loctail[1] = '\0';
859: }
860: /* Contruct URL from relative redirect */
861: if (asprintf(&redirurl, "%s%s%s%s/%s%s",
862: scheme, full_host,
863: portnum ? ":" : "",
864: portnum ? portnum : "",
865: locbase ? locbase : "",
866: cp) == -1)
867: errx(1, "Cannot build "
868: "redirect URL");
869: free(locbase);
870: #endif /* SMALL */
871: } else if ((redirurl = strdup(cp)) == NULL)
872: errx(1, "Cannot allocate memory for URL");
873: loctail = strchr(redirurl, '#');
874: if (loctail != NULL)
875: *loctail = '\0';
1.40 fgsch 876: if (verbose)
1.102 halex 877: fprintf(ttyout, "Redirected to %s\n", redirurl);
1.40 fgsch 878: if (fin != NULL)
879: fclose(fin);
880: else if (s != -1)
881: close(s);
1.102 halex 882: rval = url_get(redirurl, proxyenv, savefile);
883: free(redirurl);
884: goto cleanup_url_get;
1.40 fgsch 885: }
1.108 tobias 886: free(buf);
1.1 millert 887: }
888:
1.17 millert 889: /* Open the output file. */
1.100 halex 890: if (!pipeout) {
1.75 martynas 891: #ifndef SMALL
892: if (resume)
1.83 martynas 893: out = open(savefile, O_CREAT | O_WRONLY | O_APPEND,
894: 0666);
1.75 martynas 895: else
1.78 martynas 896: #endif /* !SMALL */
1.75 martynas 897: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC,
898: 0666);
1.10 deraadt 899: if (out < 0) {
900: warn("Can't open %s", savefile);
901: goto cleanup_url_get;
902: }
903: } else
1.17 millert 904: out = fileno(stdout);
1.1 millert 905:
906: /* Trap signals */
907: oldintr = NULL;
1.97 martynas 908: oldinti = NULL;
1.1 millert 909: if (setjmp(httpabort)) {
910: if (oldintr)
1.2 millert 911: (void)signal(SIGINT, oldintr);
1.97 martynas 912: if (oldinti)
913: (void)signal(SIGINFO, oldinti);
1.6 millert 914: goto cleanup_url_get;
1.1 millert 915: }
916: oldintr = signal(SIGINT, aborthttp);
917:
918: bytes = 0;
919: hashbytes = mark;
1.84 martynas 920: progressmeter(-1, path);
1.43 millert 921:
922: free(buf);
1.1 millert 923:
924: /* Finally, suck down the file. */
1.113 tedu 925: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 926: errx(1, "Can't allocate memory for transfer buffer");
1.1 millert 927: i = 0;
1.61 deraadt 928: len = 1;
1.97 martynas 929: oldinti = signal(SIGINFO, psummary);
1.61 deraadt 930: while (len > 0) {
1.134 jsing 931: len = ftp_read(fin, tls, buf, buflen);
1.1 millert 932: bytes += len;
1.61 deraadt 933: for (cp = buf, wlen = len; wlen > 0; wlen -= i, cp += i) {
934: if ((i = write(out, cp, wlen)) == -1) {
1.1 millert 935: warn("Writing %s", savefile);
1.97 martynas 936: signal(SIGINFO, oldinti);
1.6 millert 937: goto cleanup_url_get;
1.1 millert 938: }
939: else if (i == 0)
940: break;
941: }
942: if (hash && !progress) {
943: while (bytes >= hashbytes) {
1.10 deraadt 944: (void)putc('#', ttyout);
1.1 millert 945: hashbytes += mark;
946: }
1.10 deraadt 947: (void)fflush(ttyout);
1.1 millert 948: }
949: }
1.97 martynas 950: signal(SIGINFO, oldinti);
1.1 millert 951: if (hash && !progress && bytes > 0) {
952: if (bytes < mark)
1.10 deraadt 953: (void)putc('#', ttyout);
954: (void)putc('\n', ttyout);
955: (void)fflush(ttyout);
1.1 millert 956: }
957: if (len != 0) {
958: warn("Reading from socket");
1.6 millert 959: goto cleanup_url_get;
1.1 millert 960: }
1.84 martynas 961: progressmeter(1, NULL);
1.75 martynas 962: if (
963: #ifndef SMALL
964: !resume &&
1.78 martynas 965: #endif /* !SMALL */
1.75 martynas 966: filesize != -1 && len == 0 && bytes != filesize) {
1.24 deraadt 967: if (verbose)
968: fputs("Read short file.\n", ttyout);
969: goto cleanup_url_get;
970: }
971:
1.1 millert 972: if (verbose)
1.97 martynas 973: ptransfer(0);
1.2 millert 974: (void)signal(SIGINT, oldintr);
1.1 millert 975:
1.40 fgsch 976: rval = 0;
977: goto cleanup_url_get;
1.1 millert 978:
1.14 millert 979: noftpautologin:
980: warnx(
981: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
982: goto cleanup_url_get;
983:
1.1 millert 984: improper:
1.8 millert 985: warnx("Improper response from %s", host);
1.14 millert 986:
1.6 millert 987: cleanup_url_get:
1.61 deraadt 988: #ifndef SMALL
1.134 jsing 989: if (tls != NULL) {
990: tls_close(tls);
991: tls_free(tls);
1.61 deraadt 992: }
1.102 halex 993: free(full_host);
1.128 jca 994: free(sslhost);
1.78 martynas 995: #endif /* !SMALL */
1.40 fgsch 996: if (fin != NULL)
997: fclose(fin);
998: else if (s != -1)
1.1 millert 999: close(s);
1.67 steven 1000: free(buf);
1.136 bluhm 1001: free(proxyhost);
1.67 steven 1002: free(proxyurl);
1.62 ray 1003: free(newline);
1.123 guenther 1004: free(credentials);
1.40 fgsch 1005: return (rval);
1.1 millert 1006: }
1007:
1008: /*
1009: * Abort a http retrieval
1010: */
1.51 deraadt 1011: /* ARGSUSED */
1.1 millert 1012: void
1.51 deraadt 1013: aborthttp(int signo)
1.1 millert 1014: {
1015:
1016: alarmtimer(0);
1.10 deraadt 1017: fputs("\nhttp fetch aborted.\n", ttyout);
1018: (void)fflush(ttyout);
1.1 millert 1019: longjmp(httpabort, 1);
1020: }
1021:
1022: /*
1.22 deraadt 1023: * Abort a http retrieval
1024: */
1.51 deraadt 1025: /* ARGSUSED */
1.22 deraadt 1026: void
1.51 deraadt 1027: abortfile(int signo)
1.22 deraadt 1028: {
1029:
1030: alarmtimer(0);
1031: fputs("\nfile fetch aborted.\n", ttyout);
1032: (void)fflush(ttyout);
1033: longjmp(httpabort, 1);
1034: }
1035:
1036: /*
1.1 millert 1037: * Retrieve multiple files from the command line, transferring
1038: * files of the form "host:path", "ftp://host/path" using the
1039: * ftp protocol, and files of the form "http://host/path" using
1040: * the http protocol.
1.2 millert 1041: * If path has a trailing "/", then return (-1);
1.1 millert 1042: * the path will be cd-ed into and the connection remains open,
1043: * and the function will return -1 (to indicate the connection
1044: * is alive).
1045: * If an error occurs the return value will be the offset+1 in
1046: * argv[] of the file that caused a problem (i.e, argv[x]
1047: * returns x+1)
1048: * Otherwise, 0 is returned if all files retrieved successfully.
1049: */
1050: int
1.50 deraadt 1051: auto_fetch(int argc, char *argv[], char *outfile)
1.1 millert 1052: {
1053: char *xargv[5];
1.62 ray 1054: char *cp, *url, *host, *dir, *file, *portnum;
1055: char *username, *pass, *pathstart;
1.6 millert 1056: char *ftpproxy, *httpproxy;
1.14 millert 1057: int rval, xargc;
1058: volatile int argpos;
1.49 krw 1059: int dirhasglob, filehasglob, oautologin;
1.137 deraadt 1060: char rempath[PATH_MAX];
1.1 millert 1061:
1062: argpos = 0;
1063:
1064: if (setjmp(toplevel)) {
1065: if (connected)
1066: disconnect(0, NULL);
1.2 millert 1067: return (argpos + 1);
1.1 millert 1068: }
1.3 millert 1069: (void)signal(SIGINT, (sig_t)intr);
1070: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 1071:
1.45 millert 1072: if ((ftpproxy = getenv(FTP_PROXY)) != NULL && *ftpproxy == '\0')
1073: ftpproxy = NULL;
1074: if ((httpproxy = getenv(HTTP_PROXY)) != NULL && *httpproxy == '\0')
1075: httpproxy = NULL;
1.6 millert 1076:
1.1 millert 1077: /*
1078: * Loop through as long as there's files to fetch.
1079: */
1.123 guenther 1080: username = pass = NULL;
1.62 ray 1081: for (rval = 0; (rval == 0) && (argpos < argc); free(url), argpos++) {
1.1 millert 1082: if (strchr(argv[argpos], ':') == NULL)
1083: break;
1.123 guenther 1084:
1085: free(username);
1086: free(pass);
1.62 ray 1087: host = dir = file = portnum = username = pass = NULL;
1.1 millert 1088:
1089: /*
1090: * We muck with the string, so we make a copy.
1091: */
1.62 ray 1092: url = strdup(argv[argpos]);
1093: if (url == NULL)
1.1 millert 1094: errx(1, "Can't allocate memory for auto-fetch.");
1095:
1096: /*
1097: * Try HTTP URL-style arguments first.
1098: */
1.62 ray 1099: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.61 deraadt 1100: #ifndef SMALL
1101: /* even if we compiled without SSL, url_get will check */
1.62 ray 1102: strncasecmp(url, HTTPS_URL, sizeof(HTTPS_URL) -1) == 0 ||
1.78 martynas 1103: #endif /* !SMALL */
1.62 ray 1104: strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1.54 fgsch 1105: redirect_loop = 0;
1.62 ray 1106: if (url_get(url, httpproxy, outfile) == -1)
1.1 millert 1107: rval = argpos + 1;
1108: continue;
1109: }
1110:
1111: /*
1.6 millert 1112: * Try FTP URL-style arguments next. If ftpproxy is
1113: * set, use url_get() instead of standard ftp.
1114: * Finally, try host:file.
1.1 millert 1115: */
1.62 ray 1116: host = url;
1117: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 1118: char *passend, *passagain, *userend;
1.31 itojun 1119:
1.6 millert 1120: if (ftpproxy) {
1.62 ray 1121: if (url_get(url, ftpproxy, outfile) == -1)
1.6 millert 1122: rval = argpos + 1;
1123: continue;
1124: }
1.1 millert 1125: host += sizeof(FTP_URL) - 1;
1.8 millert 1126: dir = strchr(host, '/');
1.1 millert 1127:
1.8 millert 1128: /* Look for [user:pass@]host[:port] */
1.31 itojun 1129:
1130: /* check if we have "user:pass@" */
1.37 heko 1131: userend = strchr(host, ':');
1.31 itojun 1132: passend = strchr(host, '@');
1133: if (passend && userend && userend < passend &&
1134: (!dir || passend < dir)) {
1.62 ray 1135: username = host;
1.31 itojun 1136: pass = userend + 1;
1137: host = passend + 1;
1138: *userend = *passend = '\0';
1.37 heko 1139: passagain = strchr(host, '@');
1.42 deraadt 1140: if (strchr(pass, '@') != NULL ||
1.37 heko 1141: (passagain != NULL && passagain < dir)) {
1142: warnx(at_encoding_warning);
1.123 guenther 1143: username = pass = NULL;
1.37 heko 1144: goto bad_ftp_url;
1.42 deraadt 1145: }
1.31 itojun 1146:
1.77 martynas 1147: if (EMPTYSTRING(username)) {
1.11 millert 1148: bad_ftp_url:
1.31 itojun 1149: warnx("Invalid URL: %s", argv[argpos]);
1150: rval = argpos + 1;
1.123 guenther 1151: username = pass = NULL;
1.31 itojun 1152: continue;
1153: }
1.62 ray 1154: username = urldecode(username);
1.37 heko 1155: pass = urldecode(pass);
1.8 millert 1156: }
1.31 itojun 1157:
1158: /* check [host]:port, or [host] */
1159: if (host[0] == '[') {
1160: cp = strchr(host, ']');
1161: if (cp && (!dir || cp < dir)) {
1162: if (cp + 1 == dir || cp[1] == ':') {
1163: host++;
1164: *cp++ = '\0';
1165: } else
1166: cp = NULL;
1167: } else
1168: cp = host;
1.25 itojun 1169: } else
1170: cp = host;
1.31 itojun 1171:
1172: /* split off host[:port] if there is */
1173: if (cp) {
1174: portnum = strchr(cp, ':');
1.52 henning 1175: pathstart = strchr(cp, '/');
1176: /* : in path is not a port # indicator */
1177: if (portnum && pathstart &&
1178: pathstart < portnum)
1179: portnum = NULL;
1180:
1.31 itojun 1181: if (!portnum)
1182: ;
1183: else {
1184: if (!dir)
1185: ;
1186: else if (portnum + 1 < dir) {
1187: *portnum++ = '\0';
1188: /*
1189: * XXX should check if portnum
1190: * is decimal number
1191: */
1192: } else {
1193: /* empty portnum */
1194: goto bad_ftp_url;
1195: }
1196: }
1197: } else
1198: portnum = NULL;
1.8 millert 1199: } else { /* classic style `host:file' */
1200: dir = strchr(host, ':');
1201: }
1.1 millert 1202: if (EMPTYSTRING(host)) {
1203: rval = argpos + 1;
1204: continue;
1205: }
1206:
1207: /*
1.9 millert 1208: * If dir is NULL, the file wasn't specified
1.1 millert 1209: * (URL looked something like ftp://host)
1210: */
1.8 millert 1211: if (dir != NULL)
1212: *dir++ = '\0';
1.1 millert 1213:
1214: /*
1215: * Extract the file and (if present) directory name.
1216: */
1.42 deraadt 1217: if (!EMPTYSTRING(dir)) {
1.8 millert 1218: cp = strrchr(dir, '/');
1.1 millert 1219: if (cp != NULL) {
1220: *cp++ = '\0';
1221: file = cp;
1222: } else {
1223: file = dir;
1224: dir = NULL;
1225: }
1226: }
1.80 martynas 1227: #ifndef SMALL
1.1 millert 1228: if (debug)
1.42 deraadt 1229: fprintf(ttyout,
1230: "user %s:%s host %s port %s dir %s file %s\n",
1.76 martynas 1231: username, pass ? "XXXX" : NULL, host, portnum,
1232: dir, file);
1.80 martynas 1233: #endif /* !SMALL */
1.1 millert 1234:
1235: /*
1.49 krw 1236: * Set up the connection.
1.1 millert 1237: */
1.49 krw 1238: if (connected)
1239: disconnect(0, NULL);
1240: xargv[0] = __progname;
1241: xargv[1] = host;
1.8 millert 1242: xargv[2] = NULL;
1.49 krw 1243: xargc = 2;
1244: if (!EMPTYSTRING(portnum)) {
1245: xargv[2] = portnum;
1246: xargv[3] = NULL;
1247: xargc = 3;
1248: }
1249: oautologin = autologin;
1.88 martynas 1250: if (username == NULL)
1.89 halex 1251: anonftp = 1;
1252: else {
1253: anonftp = 0;
1.49 krw 1254: autologin = 0;
1.89 halex 1255: }
1.49 krw 1256: setpeer(xargc, xargv);
1257: autologin = oautologin;
1.87 martynas 1258: if (connected == 0 ||
1259: (connected == 1 && autologin && (username == NULL ||
1260: !ftp_login(host, username, pass)))) {
1.49 krw 1261: warnx("Can't connect or login to host `%s'", host);
1.8 millert 1262: rval = argpos + 1;
1263: continue;
1.1 millert 1264: }
1.49 krw 1265:
1266: /* Always use binary transfers. */
1267: setbinary(0, NULL);
1.1 millert 1268:
1.4 millert 1269: dirhasglob = filehasglob = 0;
1270: if (doglob) {
1.42 deraadt 1271: if (!EMPTYSTRING(dir) &&
1.4 millert 1272: strpbrk(dir, "*?[]{}") != NULL)
1273: dirhasglob = 1;
1.42 deraadt 1274: if (!EMPTYSTRING(file) &&
1.4 millert 1275: strpbrk(file, "*?[]{}") != NULL)
1276: filehasglob = 1;
1277: }
1278:
1.1 millert 1279: /* Change directories, if necessary. */
1.42 deraadt 1280: if (!EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 1281: xargv[0] = "cd";
1282: xargv[1] = dir;
1283: xargv[2] = NULL;
1284: cd(2, xargv);
1.42 deraadt 1285: if (!dirchange) {
1.1 millert 1286: rval = argpos + 1;
1287: continue;
1288: }
1289: }
1290:
1291: if (EMPTYSTRING(file)) {
1.86 martynas 1292: #ifndef SMALL
1.1 millert 1293: rval = -1;
1.86 martynas 1294: #else /* !SMALL */
1295: recvrequest("NLST", "-", NULL, "w", 0, 0);
1296: rval = 0;
1297: #endif /* !SMALL */
1.1 millert 1298: continue;
1299: }
1300:
1.21 marc 1301: if (verbose)
1.10 deraadt 1302: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 1303:
1.4 millert 1304: if (dirhasglob) {
1305: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
1306: file = rempath;
1307: }
1308:
1309: /* Fetch the file(s). */
1.10 deraadt 1310: xargc = 2;
1.1 millert 1311: xargv[0] = "get";
1312: xargv[1] = file;
1313: xargv[2] = NULL;
1.4 millert 1314: if (dirhasglob || filehasglob) {
1315: int ointeractive;
1316:
1317: ointeractive = interactive;
1318: interactive = 0;
1319: xargv[0] = "mget";
1.78 martynas 1320: #ifndef SMALL
1321: if (resume) {
1322: xargc = 3;
1323: xargv[1] = "-c";
1324: xargv[2] = file;
1325: xargv[3] = NULL;
1326: }
1327: #endif /* !SMALL */
1.10 deraadt 1328: mget(xargc, xargv);
1.5 millert 1329: interactive = ointeractive;
1.10 deraadt 1330: } else {
1.17 millert 1331: if (outfile != NULL) {
1332: xargv[2] = outfile;
1333: xargv[3] = NULL;
1.10 deraadt 1334: xargc++;
1335: }
1.75 martynas 1336: #ifndef SMALL
1337: if (resume)
1338: reget(xargc, xargv);
1339: else
1.78 martynas 1340: #endif /* !SMALL */
1.75 martynas 1341: get(xargc, xargv);
1.10 deraadt 1342: }
1.1 millert 1343:
1.4 millert 1344: if ((code / 100) != COMPLETE)
1.1 millert 1345: rval = argpos + 1;
1346: }
1347: if (connected && rval != -1)
1348: disconnect(0, NULL);
1349: return (rval);
1.37 heko 1350: }
1351:
1352: char *
1.50 deraadt 1353: urldecode(const char *str)
1.37 heko 1354: {
1.53 deraadt 1355: char *ret, c;
1356: int i, reallen;
1.37 heko 1357:
1.53 deraadt 1358: if (str == NULL)
1359: return NULL;
1360: if ((ret = malloc(strlen(str)+1)) == NULL)
1361: err(1, "Can't allocate memory for URL decoding");
1362: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
1363: c = str[i];
1364: if (c == '+') {
1365: *ret = ' ';
1366: continue;
1367: }
1.61 deraadt 1368:
1369: /* Cannot use strtol here because next char
1370: * after %xx may be a digit.
1371: */
1.143 guenther 1372: if (c == '%' && isxdigit((unsigned char)str[i+1]) &&
1373: isxdigit((unsigned char)str[i+2])) {
1.53 deraadt 1374: *ret = hextochar(&str[i+1]);
1375: i+=2;
1376: continue;
1377: }
1378: *ret = c;
1379: }
1380: *ret = '\0';
1381:
1382: return ret-reallen;
1.123 guenther 1383: }
1384:
1385: char *
1386: recode_credentials(const char *userinfo)
1387: {
1388: char *ui, *creds;
1389: size_t ulen, credsize;
1390:
1391: /* url-decode the user and pass */
1392: ui = urldecode(userinfo);
1393:
1394: ulen = strlen(ui);
1395: credsize = (ulen + 2) / 3 * 4 + 1;
1396: creds = malloc(credsize);
1397: if (creds == NULL)
1398: errx(1, "out of memory");
1399: if (b64_ntop(ui, ulen, creds, credsize) == -1)
1400: errx(1, "error in base64 encoding");
1401: free(ui);
1402: return (creds);
1.37 heko 1403: }
1404:
1405: char
1.50 deraadt 1406: hextochar(const char *str)
1.37 heko 1407: {
1.143 guenther 1408: unsigned char c, ret;
1.37 heko 1409:
1.53 deraadt 1410: c = str[0];
1411: ret = c;
1412: if (isalpha(c))
1413: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1414: else
1415: ret -= '0';
1416: ret *= 16;
1417:
1418: c = str[1];
1419: ret += c;
1420: if (isalpha(c))
1421: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1422: else
1423: ret -= '0';
1424: return ret;
1.25 itojun 1425: }
1426:
1427: int
1.50 deraadt 1428: isurl(const char *p)
1.25 itojun 1429: {
1.27 millert 1430:
1.26 deraadt 1431: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
1432: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.61 deraadt 1433: #ifndef SMALL
1434: strncasecmp(p, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0 ||
1.78 martynas 1435: #endif /* !SMALL */
1.27 millert 1436: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
1437: strstr(p, ":/"))
1438: return (1);
1439: return (0);
1.1 millert 1440: }
1.61 deraadt 1441:
1442: char *
1.134 jsing 1443: ftp_readline(FILE *fp, struct tls *tls, size_t *lenp)
1.61 deraadt 1444: {
1445: if (fp != NULL)
1446: return fparseln(fp, lenp, NULL, "\0\0\0", 0);
1447: #ifndef SMALL
1.134 jsing 1448: else if (tls != NULL)
1449: return SSL_readline(tls, lenp);
1.78 martynas 1450: #endif /* !SMALL */
1.61 deraadt 1451: else
1452: return NULL;
1453: }
1454:
1.65 ray 1455: size_t
1.134 jsing 1456: ftp_read(FILE *fp, struct tls *tls, char *buf, size_t len)
1.61 deraadt 1457: {
1.142 jsing 1458: ssize_t tls_ret;
1459: size_t ret = 0;
1460:
1.61 deraadt 1461: if (fp != NULL)
1462: ret = fread(buf, sizeof(char), len, fp);
1463: #ifndef SMALL
1.142 jsing 1464: else if (tls != NULL) {
1465: if ((tls_ret = tls_read(tls, buf, len)) >= 0)
1466: ret = (size_t)tls_ret;
1.65 ray 1467: }
1.78 martynas 1468: #endif /* !SMALL */
1.61 deraadt 1469: return (ret);
1470: }
1471:
1472: int
1.134 jsing 1473: ftp_printf(FILE *fp, struct tls *tls, const char *fmt, ...)
1.61 deraadt 1474: {
1475: int ret;
1476: va_list ap;
1477:
1478: va_start(ap, fmt);
1479:
1480: if (fp != NULL)
1481: ret = vfprintf(fp, fmt, ap);
1482: #ifndef SMALL
1.134 jsing 1483: else if (tls != NULL)
1484: ret = SSL_vprintf(tls, fmt, ap);
1.78 martynas 1485: #endif /* !SMALL */
1.61 deraadt 1486: else
1.92 jsg 1487: ret = 0;
1.61 deraadt 1488:
1489: va_end(ap);
1.136 bluhm 1490: #ifndef SMALL
1491: if (debug) {
1492: va_start(ap, fmt);
1493: ret = vfprintf(ttyout, fmt, ap);
1494: va_end(ap);
1495: }
1496: #endif /* !SMALL */
1.61 deraadt 1497: return (ret);
1498: }
1499:
1500: #ifndef SMALL
1501: int
1.134 jsing 1502: SSL_vprintf(struct tls *tls, const char *fmt, va_list ap)
1.61 deraadt 1503: {
1.139 bluhm 1504: char *string, *buf;
1.141 beck 1505: size_t len;
1.61 deraadt 1506: int ret;
1507:
1508: if ((ret = vasprintf(&string, fmt, ap)) == -1)
1509: return ret;
1.139 bluhm 1510: buf = string;
1511: len = ret;
1512: while (len > 0) {
1.141 beck 1513: ret = tls_write(tls, buf, len);
1514: if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT)
1.139 bluhm 1515: continue;
1516: if (ret < 0)
1517: break;
1.141 beck 1518: buf += ret;
1519: len -= ret;
1.139 bluhm 1520: }
1.61 deraadt 1521: free(string);
1522: return ret;
1523: }
1524:
1525: char *
1.134 jsing 1526: SSL_readline(struct tls *tls, size_t *lenp)
1.61 deraadt 1527: {
1.141 beck 1528: size_t i, len;
1.61 deraadt 1529: char *buf, *q, c;
1.109 sthen 1530: int ret;
1.61 deraadt 1531:
1532: len = 128;
1533: if ((buf = malloc(len)) == NULL)
1534: errx(1, "Can't allocate memory for transfer buffer");
1535: for (i = 0; ; i++) {
1536: if (i >= len - 1) {
1.132 doug 1537: if ((q = reallocarray(buf, len, 2)) == NULL)
1.61 deraadt 1538: errx(1, "Can't expand transfer buffer");
1539: buf = q;
1540: len *= 2;
1541: }
1.109 sthen 1542: again:
1.141 beck 1543: ret = tls_read(tls, &c, 1);
1544: if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT)
1.126 jsing 1545: goto again;
1.142 jsing 1546: if (ret < 0)
1.140 jsing 1547: errx(1, "SSL read error: %s", tls_error(tls));
1.126 jsing 1548:
1.61 deraadt 1549: buf[i] = c;
1.145 martijn 1550: if (c == '\n') {
1551: buf[i] = '\0';
1.61 deraadt 1552: break;
1.145 martijn 1553: }
1.61 deraadt 1554: }
1555: *lenp = i;
1556: return (buf);
1557: }
1558:
1559: int
1.81 espie 1560: proxy_connect(int socket, char *host, char *cookie)
1.61 deraadt 1561: {
1.66 ray 1562: int l;
1.61 deraadt 1563: char buf[1024];
1564: char *connstr, *hosttail, *port;
1565:
1566: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
1567: (hosttail[1] == '\0' || hosttail[1] == ':')) {
1568: host++;
1569: *hosttail++ = '\0';
1570: } else
1571: hosttail = host;
1572:
1573: port = strrchr(hosttail, ':'); /* find portnum */
1574: if (port != NULL)
1575: *port++ = '\0';
1576: if (!port)
1577: port = "443";
1578:
1.81 espie 1579: if (cookie) {
1580: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n"
1581: "Proxy-Authorization: Basic %s\r\n%s\r\n\r\n",
1582: host, port, cookie, HTTP_USER_AGENT);
1583: } else {
1584: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n%s\r\n\r\n",
1585: host, port, HTTP_USER_AGENT);
1586: }
1587:
1.66 ray 1588: if (l == -1)
1.61 deraadt 1589: errx(1, "Could not allocate memory to assemble connect string!");
1.80 martynas 1590: #ifndef SMALL
1.68 ray 1591: if (debug)
1592: printf("%s", connstr);
1.80 martynas 1593: #endif /* !SMALL */
1.66 ray 1594: if (write(socket, connstr, l) != l)
1.68 ray 1595: err(1, "Could not send connect string");
1.61 deraadt 1596: read(socket, &buf, sizeof(buf)); /* only proxy header XXX: error handling? */
1.71 ray 1597: free(connstr);
1.61 deraadt 1598: return(200);
1599: }
1.78 martynas 1600: #endif /* !SMALL */
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