Annotation of src/usr.bin/ftp/fetch.c, Revision 1.171
1.171 ! jca 1: /* $OpenBSD: fetch.c,v 1.170 2019/06/28 13:35:01 deraadt 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;
1.171 ! jca 100: static int retried;
1.54 fgsch 101:
1.1 millert 102: /*
1.95 martynas 103: * Determine whether the character needs encoding, per RFC1738:
1.160 krw 104: * - No corresponding graphic US-ASCII.
105: * - Unsafe characters.
1.95 martynas 106: */
107: static int
1.138 jca 108: unsafe_char(const char *c0)
1.95 martynas 109: {
110: const char *unsafe_chars = " <>\"#{}|\\^~[]`";
1.138 jca 111: const unsigned char *c = (const unsigned char *)c0;
1.95 martynas 112:
113: /*
114: * No corresponding graphic US-ASCII.
115: * Control characters and octets not used in US-ASCII.
116: */
117: return (iscntrl(*c) || !isascii(*c) ||
118:
119: /*
120: * Unsafe characters.
121: * '%' is also unsafe, if is not followed by two
122: * hexadecimal digits.
123: */
124: strchr(unsafe_chars, *c) != NULL ||
125: (*c == '%' && (!isxdigit(*++c) || !isxdigit(*++c))));
126: }
127:
128: /*
129: * Encode given URL, per RFC1738.
130: * Allocate and return string to the caller.
131: */
132: static char *
133: url_encode(const char *path)
134: {
135: size_t i, length, new_length;
136: char *epath, *epathp;
137:
138: length = new_length = strlen(path);
139:
140: /*
141: * First pass:
142: * Count unsafe characters, and determine length of the
143: * final URL.
144: */
145: for (i = 0; i < length; i++)
146: if (unsafe_char(path + i))
147: new_length += 2;
148:
149: epath = epathp = malloc(new_length + 1); /* One more for '\0'. */
150: if (epath == NULL)
1.102 halex 151: err(1, "Can't allocate memory for URL encoding");
1.95 martynas 152:
153: /*
154: * Second pass:
155: * Encode, and copy final URL.
156: */
157: for (i = 0; i < length; i++)
158: if (unsafe_char(path + i)) {
1.138 jca 159: snprintf(epathp, 4, "%%" "%02x",
160: (unsigned char)path[i]);
1.95 martynas 161: epathp += 3;
162: } else
163: *(epathp++) = path[i];
164:
165: *epathp = '\0';
166: return (epath);
167: }
168:
1.155 deraadt 169: /* ARGSUSED */
170: static void
171: tooslow(int signo)
172: {
173: dprintf(STDERR_FILENO, "%s: connect taking too long\n", __progname);
174: _exit(2);
175: }
176:
1.95 martynas 177: /*
1.6 millert 178: * Retrieve URL, via the proxy in $proxyvar if necessary.
1.1 millert 179: * Modifies the string argument given.
180: * Returns -1 on failure, 0 on success
181: */
1.14 millert 182: static int
1.157 deraadt 183: url_get(const char *origline, const char *proxyenv, const char *outfile, int lastfile)
1.1 millert 184: {
1.69 jsg 185: char pbuf[NI_MAXSERV], hbuf[NI_MAXHOST], *cp, *portnum, *path, ststr[4];
1.62 ray 186: char *hosttail, *cause = "unknown", *newline, *host, *port, *buf = NULL;
1.106 haesbaer 187: char *epath, *redirurl, *loctail, *h, *p;
1.53 deraadt 188: int error, i, isftpurl = 0, isfileurl = 0, isredirect = 0, rval = -1;
1.152 krw 189: struct addrinfo hints, *res0, *res;
1.34 millert 190: const char * volatile savefile;
1.62 ray 191: char * volatile proxyurl = NULL;
1.123 guenther 192: char *credentials = NULL;
1.166 procter 193: volatile int fd = -1, out = -1;
1.97 martynas 194: volatile sig_t oldintr, oldinti;
1.53 deraadt 195: FILE *fin = NULL;
1.1 millert 196: off_t hashbytes;
1.58 grunk 197: const char *errstr;
1.114 tedu 198: ssize_t len, wlen;
1.136 bluhm 199: char *proxyhost = NULL;
1.154 deraadt 200: #ifndef NOSSL
1.61 deraadt 201: char *sslpath = NULL, *sslhost = NULL;
1.159 krw 202: char *full_host = NULL;
1.102 halex 203: const char *scheme;
1.123 guenther 204: int ishttpurl = 0, ishttpsurl = 0;
1.159 krw 205: #endif /* !NOSSL */
206: #ifndef SMALL
207: char *locbase;
1.152 krw 208: struct addrinfo *ares = NULL;
1.159 krw 209: #endif
1.134 jsing 210: struct tls *tls = NULL;
1.70 deraadt 211: int status;
1.105 haesbaer 212: int save_errno;
1.113 tedu 213: const size_t buflen = 128 * 1024;
1.14 millert 214:
1.97 martynas 215: direction = "received";
216:
1.62 ray 217: newline = strdup(origline);
218: if (newline == NULL)
1.14 millert 219: errx(1, "Can't allocate memory to parse URL");
1.102 halex 220: if (strncasecmp(newline, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
1.62 ray 221: host = newline + sizeof(HTTP_URL) - 1;
1.102 halex 222: #ifndef SMALL
1.123 guenther 223: ishttpurl = 1;
1.102 halex 224: scheme = HTTP_URL;
225: #endif /* !SMALL */
226: } else if (strncasecmp(newline, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.62 ray 227: host = newline + sizeof(FTP_URL) - 1;
1.14 millert 228: isftpurl = 1;
1.102 halex 229: #ifndef SMALL
230: scheme = FTP_URL;
231: #endif /* !SMALL */
1.62 ray 232: } else if (strncasecmp(newline, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
233: host = newline + sizeof(FILE_URL) - 1;
1.22 deraadt 234: isfileurl = 1;
1.154 deraadt 235: #ifndef NOSSL
1.102 halex 236: scheme = FILE_URL;
1.62 ray 237: } else if (strncasecmp(newline, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0) {
238: host = newline + sizeof(HTTPS_URL) - 1;
1.61 deraadt 239: ishttpsurl = 1;
1.102 halex 240: scheme = HTTPS_URL;
1.154 deraadt 241: #endif /* !NOSSL */
1.14 millert 242: } else
1.62 ray 243: errx(1, "url_get: Invalid URL '%s'", newline);
1.6 millert 244:
1.22 deraadt 245: if (isfileurl) {
246: path = host;
247: } else {
1.93 martynas 248: path = strchr(host, '/'); /* Find path */
1.22 deraadt 249: if (EMPTYSTRING(path)) {
1.93 martynas 250: if (outfile) { /* No slash, but */
251: path=strchr(host,'\0'); /* we have outfile. */
252: goto noslash;
253: }
1.22 deraadt 254: if (isftpurl)
255: goto noftpautologin;
1.94 martynas 256: warnx("No `/' after host (use -o): %s", origline);
1.22 deraadt 257: goto cleanup_url_get;
258: }
259: *path++ = '\0';
1.93 martynas 260: if (EMPTYSTRING(path) && !outfile) {
1.22 deraadt 261: if (isftpurl)
262: goto noftpautologin;
1.94 martynas 263: warnx("No filename after host (use -o): %s", origline);
1.22 deraadt 264: goto cleanup_url_get;
265: }
1.14 millert 266: }
1.1 millert 267:
1.93 martynas 268: noslash:
1.106 haesbaer 269:
1.154 deraadt 270: #ifndef NOSSL
1.106 haesbaer 271: /*
272: * Look for auth header in host, since now host does not
273: * contain the path. Basic auth from RFC 2617, valid
274: * characters for path are in RFC 3986 section 3.3.
275: */
1.123 guenther 276: if (proxyenv == NULL && (ishttpurl || ishttpsurl)) {
1.106 haesbaer 277: if ((p = strchr(host, '@')) != NULL) {
1.123 guenther 278: *p = '\0';
279: credentials = recode_credentials(host);
1.106 haesbaer 280: host = p + 1;
281: }
282: }
1.154 deraadt 283: #endif /* NOSSL */
1.106 haesbaer 284:
1.17 millert 285: if (outfile)
286: savefile = outfile;
1.93 martynas 287: else {
288: if (path[strlen(path) - 1] == '/') /* Consider no file */
289: savefile = NULL; /* after dir invalid. */
290: else
291: savefile = basename(path);
1.75 martynas 292: }
293:
1.14 millert 294: if (EMPTYSTRING(savefile)) {
295: if (isftpurl)
296: goto noftpautologin;
1.94 martynas 297: warnx("No filename after directory (use -o): %s", origline);
1.6 millert 298: goto cleanup_url_get;
1.14 millert 299: }
1.1 millert 300:
1.93 martynas 301: #ifndef SMALL
1.100 halex 302: if (resume && pipeout) {
1.93 martynas 303: warnx("can't append to stdout");
304: goto cleanup_url_get;
305: }
306: #endif /* !SMALL */
307:
1.59 uwe 308: if (!isfileurl && proxyenv != NULL) { /* use proxy */
1.154 deraadt 309: #ifndef NOSSL
1.61 deraadt 310: if (ishttpsurl) {
311: sslpath = strdup(path);
312: sslhost = strdup(host);
313: if (! sslpath || ! sslhost)
314: errx(1, "Can't allocate memory for https path/host.");
315: }
1.154 deraadt 316: #endif /* !NOSSL */
1.136 bluhm 317: proxyhost = strdup(host);
318: if (proxyhost == NULL)
319: errx(1, "Can't allocate memory for proxy host.");
1.62 ray 320: proxyurl = strdup(proxyenv);
321: if (proxyurl == NULL)
1.14 millert 322: errx(1, "Can't allocate memory for proxy URL.");
1.62 ray 323: if (strncasecmp(proxyurl, HTTP_URL, sizeof(HTTP_URL) - 1) == 0)
324: host = proxyurl + sizeof(HTTP_URL) - 1;
325: else if (strncasecmp(proxyurl, FTP_URL, sizeof(FTP_URL) - 1) == 0)
326: host = proxyurl + sizeof(FTP_URL) - 1;
1.6 millert 327: else {
1.14 millert 328: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 329: goto cleanup_url_get;
330: }
1.14 millert 331: if (EMPTYSTRING(host)) {
332: warnx("Malformed proxy URL: %s", proxyenv);
1.6 millert 333: goto cleanup_url_get;
1.14 millert 334: }
1.93 martynas 335: if (*--path == '\0')
336: *path = '/'; /* add / back to real path */
1.1 millert 337: path = strchr(host, '/'); /* remove trailing / on host */
1.42 deraadt 338: if (!EMPTYSTRING(path))
1.73 drahn 339: *path++ = '\0'; /* i guess this ++ is useless */
340:
341: path = strchr(host, '@'); /* look for credentials in proxy */
342: if (!EMPTYSTRING(path)) {
1.81 espie 343: *path = '\0';
1.123 guenther 344: if (strchr(host, ':') == NULL) {
1.73 drahn 345: warnx("Malformed proxy URL: %s", proxyenv);
346: goto cleanup_url_get;
347: }
1.123 guenther 348: credentials = recode_credentials(host);
1.81 espie 349: *path = '@'; /* restore @ in proxyurl */
1.123 guenther 350:
1.73 drahn 351: /*
1.81 espie 352: * This removes the password from proxyurl,
1.73 drahn 353: * filling with stars
354: */
1.81 espie 355: for (host = 1 + strchr(proxyurl + 5, ':'); *host != '@';
1.73 drahn 356: host++)
357: *host = '*';
358:
1.81 espie 359: host = path + 1;
1.73 drahn 360: }
1.123 guenther 361:
1.62 ray 362: path = newline;
1.1 millert 363: }
364:
1.22 deraadt 365: if (isfileurl) {
366: struct stat st;
367:
1.166 procter 368: fd = open(path, O_RDONLY);
369: if (fd == -1) {
1.22 deraadt 370: warn("Can't open file %s", path);
371: goto cleanup_url_get;
372: }
373:
1.166 procter 374: if (fstat(fd, &st) == -1)
1.22 deraadt 375: filesize = -1;
376: else
377: filesize = st.st_size;
378:
1.83 martynas 379: /* Open the output file. */
1.100 halex 380: if (!pipeout) {
1.75 martynas 381: #ifndef SMALL
382: if (resume)
1.82 deraadt 383: out = open(savefile, O_CREAT | O_WRONLY |
384: O_APPEND, 0666);
385:
1.75 martynas 386: else
1.78 martynas 387: #endif /* !SMALL */
1.75 martynas 388: out = open(savefile, O_CREAT | O_WRONLY |
389: O_TRUNC, 0666);
1.22 deraadt 390: if (out < 0) {
391: warn("Can't open %s", savefile);
392: goto cleanup_url_get;
393: }
394: } else
395: out = fileno(stdout);
396:
1.75 martynas 397: #ifndef SMALL
398: if (resume) {
399: if (fstat(out, &st) == -1) {
400: warn("Can't fstat %s", savefile);
401: goto cleanup_url_get;
402: }
1.166 procter 403: if (lseek(fd, st.st_size, SEEK_SET) == -1) {
1.75 martynas 404: warn("Can't lseek %s", path);
405: goto cleanup_url_get;
406: }
407: restart_point = st.st_size;
408: }
1.78 martynas 409: #endif /* !SMALL */
1.75 martynas 410:
1.22 deraadt 411: /* Trap signals */
412: oldintr = NULL;
1.97 martynas 413: oldinti = NULL;
1.22 deraadt 414: if (setjmp(httpabort)) {
415: if (oldintr)
416: (void)signal(SIGINT, oldintr);
1.97 martynas 417: if (oldinti)
418: (void)signal(SIGINFO, oldinti);
1.22 deraadt 419: goto cleanup_url_get;
420: }
421: oldintr = signal(SIGINT, abortfile);
1.42 deraadt 422:
1.22 deraadt 423: bytes = 0;
424: hashbytes = mark;
1.84 martynas 425: progressmeter(-1, path);
1.40 fgsch 426:
1.113 tedu 427: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 428: errx(1, "Can't allocate memory for transfer buffer");
1.42 deraadt 429:
1.22 deraadt 430: /* Finally, suck down the file. */
431: i = 0;
1.97 martynas 432: oldinti = signal(SIGINFO, psummary);
1.166 procter 433: while ((len = read(fd, buf, buflen)) > 0) {
1.22 deraadt 434: bytes += len;
435: for (cp = buf; len > 0; len -= i, cp += i) {
436: if ((i = write(out, cp, len)) == -1) {
437: warn("Writing %s", savefile);
1.97 martynas 438: signal(SIGINFO, oldinti);
1.22 deraadt 439: goto cleanup_url_get;
440: }
441: else if (i == 0)
442: break;
443: }
444: if (hash && !progress) {
445: while (bytes >= hashbytes) {
446: (void)putc('#', ttyout);
447: hashbytes += mark;
448: }
449: (void)fflush(ttyout);
450: }
451: }
1.97 martynas 452: signal(SIGINFO, oldinti);
1.22 deraadt 453: if (hash && !progress && bytes > 0) {
454: if (bytes < mark)
455: (void)putc('#', ttyout);
456: (void)putc('\n', ttyout);
457: (void)fflush(ttyout);
458: }
459: if (len != 0) {
460: warn("Reading from file");
461: goto cleanup_url_get;
462: }
1.84 martynas 463: progressmeter(1, NULL);
1.22 deraadt 464: if (verbose)
1.97 martynas 465: ptransfer(0);
1.22 deraadt 466: (void)signal(SIGINT, oldintr);
1.42 deraadt 467:
1.40 fgsch 468: rval = 0;
469: goto cleanup_url_get;
1.22 deraadt 470: }
471:
1.28 itojun 472: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
473: (hosttail[1] == '\0' || hosttail[1] == ':')) {
474: host++;
475: *hosttail++ = '\0';
1.102 halex 476: #ifndef SMALL
477: if (asprintf(&full_host, "[%s]", host) == -1)
478: errx(1, "Cannot allocate memory for hostname");
479: #endif /* !SMALL */
1.28 itojun 480: } else
481: hosttail = host;
482:
483: portnum = strrchr(hosttail, ':'); /* find portnum */
1.1 millert 484: if (portnum != NULL)
485: *portnum++ = '\0';
1.154 deraadt 486: #ifndef NOSSL
1.150 millert 487: port = portnum ? portnum : (ishttpsurl ? httpsport : httpport);
1.154 deraadt 488: #else /* !NOSSL */
1.150 millert 489: port = portnum ? portnum : httpport;
1.154 deraadt 490: #endif /* !NOSSL */
1.1 millert 491:
1.80 martynas 492: #ifndef SMALL
1.102 halex 493: if (full_host == NULL)
494: if ((full_host = strdup(host)) == NULL)
495: errx(1, "Cannot allocate memory for hostname");
1.1 millert 496: if (debug)
1.106 haesbaer 497: fprintf(ttyout, "host %s, port %s, path %s, "
1.150 millert 498: "save as %s, auth %s.\n", host, port, path,
499: savefile, credentials ? credentials : "none");
1.80 martynas 500: #endif /* !SMALL */
1.1 millert 501:
1.25 itojun 502: memset(&hints, 0, sizeof(hints));
1.39 deraadt 503: hints.ai_family = family;
1.25 itojun 504: hints.ai_socktype = SOCK_STREAM;
505: error = getaddrinfo(host, port, &hints, &res0);
1.61 deraadt 506: /*
507: * If the services file is corrupt/missing, fall back
508: * on our hard-coded defines.
509: */
1.30 deraadt 510: if (error == EAI_SERVICE && port == httpport) {
511: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
512: error = getaddrinfo(host, pbuf, &hints, &res0);
1.154 deraadt 513: #ifndef NOSSL
1.61 deraadt 514: } else if (error == EAI_SERVICE && port == httpsport) {
515: snprintf(pbuf, sizeof(pbuf), "%d", HTTPS_PORT);
516: error = getaddrinfo(host, pbuf, &hints, &res0);
1.154 deraadt 517: #endif /* !NOSSL */
1.30 deraadt 518: }
1.25 itojun 519: if (error) {
1.122 guenther 520: warnx("%s: %s", host, gai_strerror(error));
1.25 itojun 521: goto cleanup_url_get;
1.1 millert 522: }
523:
1.105 haesbaer 524: #ifndef SMALL
525: if (srcaddr) {
526: hints.ai_flags |= AI_NUMERICHOST;
527: error = getaddrinfo(srcaddr, NULL, &hints, &ares);
528: if (error) {
1.122 guenther 529: warnx("%s: %s", srcaddr, gai_strerror(error));
1.105 haesbaer 530: goto cleanup_url_get;
531: }
532: }
533: #endif /* !SMALL */
1.135 deraadt 534:
535: /* ensure consistent order of the output */
536: if (verbose)
537: setvbuf(ttyout, NULL, _IOLBF, 0);
1.105 haesbaer 538:
1.166 procter 539: fd = -1;
1.25 itojun 540: for (res = res0; res; res = res->ai_next) {
1.44 itojun 541: if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
542: sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
543: strlcpy(hbuf, "(unknown)", sizeof(hbuf));
1.41 deraadt 544: if (verbose)
1.44 itojun 545: fprintf(ttyout, "Trying %s...\n", hbuf);
1.14 millert 546:
1.166 procter 547: fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
548: if (fd == -1) {
1.25 itojun 549: cause = "socket";
550: continue;
1.1 millert 551: }
552:
1.105 haesbaer 553: #ifndef SMALL
554: if (srcaddr) {
555: if (ares->ai_family != res->ai_family) {
1.166 procter 556: close(fd);
557: fd = -1;
1.105 haesbaer 558: errno = EINVAL;
559: cause = "bind";
560: continue;
561: }
1.170 deraadt 562: if (bind(fd, ares->ai_addr, ares->ai_addrlen) == -1) {
1.105 haesbaer 563: save_errno = errno;
1.166 procter 564: close(fd);
1.105 haesbaer 565: errno = save_errno;
1.166 procter 566: fd = -1;
1.105 haesbaer 567: cause = "bind";
568: continue;
569: }
570: }
571: #endif /* !SMALL */
572:
1.155 deraadt 573: if (connect_timeout) {
574: (void)signal(SIGALRM, tooslow);
575: alarmtimer(connect_timeout);
576: }
577:
1.166 procter 578: for (error = connect(fd, res->ai_addr, res->ai_addrlen);
579: error != 0 && errno == EINTR; error = connect_wait(fd))
1.149 millert 580: continue;
581: if (error != 0) {
1.57 otto 582: save_errno = errno;
1.166 procter 583: close(fd);
1.57 otto 584: errno = save_errno;
1.166 procter 585: fd = -1;
1.25 itojun 586: cause = "connect";
1.19 deraadt 587: continue;
588: }
1.25 itojun 589:
1.29 itojun 590: /* get port in numeric */
591: if (getnameinfo(res->ai_addr, res->ai_addrlen, NULL, 0,
592: pbuf, sizeof(pbuf), NI_NUMERICSERV) == 0)
593: port = pbuf;
594: else
595: port = NULL;
596:
1.158 jca 597: #ifndef NOSSL
1.61 deraadt 598: if (proxyenv && sslhost)
1.166 procter 599: proxy_connect(fd, sslhost, credentials);
1.158 jca 600: #endif /* !NOSSL */
1.25 itojun 601: break;
602: }
603: freeaddrinfo(res0);
1.105 haesbaer 604: #ifndef SMALL
605: if (srcaddr)
606: freeaddrinfo(ares);
607: #endif /* !SMALL */
1.166 procter 608: if (fd < 0) {
1.33 millert 609: warn("%s", cause);
1.6 millert 610: goto cleanup_url_get;
1.1 millert 611: }
612:
1.154 deraadt 613: #ifndef NOSSL
1.61 deraadt 614: if (ishttpsurl) {
615: if (proxyenv && sslpath) {
616: ishttpsurl = 0;
1.62 ray 617: proxyurl = NULL;
1.61 deraadt 618: path = sslpath;
619: }
1.131 jca 620: if (sslhost == NULL) {
621: sslhost = strdup(host);
622: if (sslhost == NULL)
623: errx(1, "Can't allocate memory for https host.");
1.116 jca 624: }
1.134 jsing 625: if ((tls = tls_client()) == NULL) {
1.126 jsing 626: fprintf(ttyout, "failed to create SSL client\n");
1.61 deraadt 627: goto cleanup_url_get;
628: }
1.134 jsing 629: if (tls_configure(tls, tls_config) != 0) {
1.126 jsing 630: fprintf(ttyout, "SSL configuration failure: %s\n",
1.134 jsing 631: tls_error(tls));
1.61 deraadt 632: goto cleanup_url_get;
1.117 jca 633: }
1.166 procter 634: if (tls_connect_socket(tls, fd, sslhost) != 0) {
1.134 jsing 635: fprintf(ttyout, "SSL failure: %s\n", tls_error(tls));
1.72 ray 636: goto cleanup_url_get;
1.118 jca 637: }
1.61 deraadt 638: } else {
1.166 procter 639: fin = fdopen(fd, "r+");
640: fd = -1;
1.61 deraadt 641: }
1.154 deraadt 642: #else /* !NOSSL */
1.166 procter 643: fin = fdopen(fd, "r+");
644: fd = -1;
1.154 deraadt 645: #endif /* !NOSSL */
1.155 deraadt 646:
1.157 deraadt 647: #ifdef SMALL
648: if (lastfile) {
649: if (pipeout) {
650: if (pledge("stdio rpath inet dns tty", NULL) == -1)
651: err(1, "pledge");
652: } else {
653: if (pledge("stdio rpath wpath cpath inet dns tty", NULL) == -1)
654: err(1, "pledge");
655: }
656: }
657: #endif
658:
1.155 deraadt 659: if (connect_timeout) {
660: signal(SIGALRM, SIG_DFL);
661: alarmtimer(0);
662: }
1.40 fgsch 663:
1.1 millert 664: /*
1.40 fgsch 665: * Construct and send the request. Proxy requests don't want leading /.
1.1 millert 666: */
1.154 deraadt 667: #ifndef NOSSL
1.74 pyr 668: cookie_get(host, path, ishttpsurl, &buf);
1.154 deraadt 669: #endif /* !NOSSL */
1.95 martynas 670:
671: epath = url_encode(path);
1.62 ray 672: if (proxyurl) {
1.151 millert 673: if (verbose) {
674: fprintf(ttyout, "Requesting %s (via %s)\n",
675: origline, proxyurl);
676: }
1.32 itojun 677: /*
678: * Host: directive must use the destination host address for
1.136 bluhm 679: * the original URI (path).
1.32 itojun 680: */
1.123 guenther 681: if (credentials)
1.134 jsing 682: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
1.136 bluhm 683: "Proxy-Authorization: Basic %s\r\n"
684: "Host: %s\r\n%s%s\r\n\r\n",
685: epath, credentials,
686: proxyhost, buf ? buf : "", httpuseragent);
1.73 drahn 687: else
1.136 bluhm 688: ftp_printf(fin, tls, "GET %s HTTP/1.0\r\n"
689: "Host: %s\r\n%s%s\r\n\r\n",
690: epath, proxyhost, buf ? buf : "", httpuseragent);
1.28 itojun 691: } else {
1.151 millert 692: if (verbose)
693: fprintf(ttyout, "Requesting %s\n", origline);
1.90 martynas 694: #ifndef SMALL
695: if (resume) {
696: struct stat stbuf;
697:
698: if (stat(savefile, &stbuf) == 0)
699: restart_point = stbuf.st_size;
700: else
701: restart_point = 0;
702: }
1.154 deraadt 703: #endif /* SMALL */
704: #ifndef NOSSL
1.123 guenther 705: if (credentials) {
1.134 jsing 706: ftp_printf(fin, tls,
1.106 haesbaer 707: "GET /%s %s\r\nAuthorization: Basic %s\r\nHost: ",
708: epath, restart_point ?
709: "HTTP/1.1\r\nConnection: close" : "HTTP/1.0",
1.123 guenther 710: credentials);
711: free(credentials);
712: credentials = NULL;
1.106 haesbaer 713: } else
1.154 deraadt 714: #endif /* NOSSL */
1.134 jsing 715: ftp_printf(fin, tls, "GET /%s %s\r\nHost: ", epath,
1.107 haesbaer 716: #ifndef SMALL
717: restart_point ? "HTTP/1.1\r\nConnection: close" :
718: #endif /* !SMALL */
719: "HTTP/1.0");
1.136 bluhm 720: if (proxyhost) {
721: ftp_printf(fin, tls, "%s", proxyhost);
722: port = NULL;
723: } else if (strchr(host, ':')) {
1.55 fgsch 724: /*
725: * strip off scoped address portion, since it's
726: * local to node
727: */
1.32 itojun 728: h = strdup(host);
729: if (h == NULL)
730: errx(1, "Can't allocate memory.");
731: if ((p = strchr(h, '%')) != NULL)
732: *p = '\0';
1.134 jsing 733: ftp_printf(fin, tls, "[%s]", h);
1.32 itojun 734: free(h);
1.55 fgsch 735: } else
1.134 jsing 736: ftp_printf(fin, tls, "%s", host);
1.55 fgsch 737:
738: /*
739: * Send port number only if it's specified and does not equal
740: * 80. Some broken HTTP servers get confused if you explicitly
741: * send them the port number.
742: */
1.154 deraadt 743: #ifndef NOSSL
1.61 deraadt 744: if (port && strcmp(port, (ishttpsurl ? "443" : "80")) != 0)
1.134 jsing 745: ftp_printf(fin, tls, ":%s", port);
1.90 martynas 746: if (restart_point)
1.134 jsing 747: ftp_printf(fin, tls, "\r\nRange: bytes=%lld-",
1.75 martynas 748: (long long)restart_point);
1.154 deraadt 749: #else /* !NOSSL */
1.55 fgsch 750: if (port && strcmp(port, "80") != 0)
1.134 jsing 751: ftp_printf(fin, tls, ":%s", port);
1.154 deraadt 752: #endif /* !NOSSL */
1.134 jsing 753: ftp_printf(fin, tls, "\r\n%s%s\r\n\r\n",
1.124 lteo 754: buf ? buf : "", httpuseragent);
1.28 itojun 755: }
1.95 martynas 756: free(epath);
1.74 pyr 757:
1.154 deraadt 758: #ifndef NOSSL
1.74 pyr 759: free(buf);
1.156 tb 760: #endif /* !NOSSL */
1.74 pyr 761: buf = NULL;
762:
1.61 deraadt 763: if (fin != NULL && fflush(fin) == EOF) {
1.14 millert 764: warn("Writing HTTP request");
1.6 millert 765: goto cleanup_url_get;
1.1 millert 766: }
1.134 jsing 767: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 768: warn("Receiving HTTP reply");
769: goto cleanup_url_get;
1.1 millert 770: }
1.40 fgsch 771:
772: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
773: buf[--len] = '\0';
1.80 martynas 774: #ifndef SMALL
1.40 fgsch 775: if (debug)
776: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 777: #endif /* !SMALL */
1.40 fgsch 778:
1.1 millert 779: cp = strchr(buf, ' ');
780: if (cp == NULL)
781: goto improper;
782: else
783: cp++;
1.69 jsg 784:
785: strlcpy(ststr, cp, sizeof(ststr));
1.171 ! jca 786: status = strtonum(ststr, 200, 503, &errstr);
1.69 jsg 787: if (errstr) {
788: warnx("Error retrieving file: %s", cp);
789: goto cleanup_url_get;
790: }
791:
792: switch (status) {
793: case 200: /* OK */
1.75 martynas 794: #ifndef SMALL
1.109 sthen 795: /*
1.98 phessler 796: * When we request a partial file, and we receive an HTTP 200
797: * it is a good indication that the server doesn't support
798: * range requests, and is about to send us the entire file.
799: * If the restart_point == 0, then we are not actually
800: * requesting a partial file, and an HTTP 200 is appropriate.
801: */
802: if (resume && restart_point != 0) {
803: warnx("Server does not support resume.");
804: restart_point = resume = 0;
805: }
1.101 halex 806: /* FALLTHROUGH */
1.75 martynas 807: case 206: /* Partial Content */
1.91 halex 808: #endif /* !SMALL */
1.69 jsg 809: break;
810: case 301: /* Moved Permanently */
811: case 302: /* Found */
812: case 303: /* See Other */
813: case 307: /* Temporary Redirect */
1.40 fgsch 814: isredirect++;
1.54 fgsch 815: if (redirect_loop++ > 10) {
816: warnx("Too many redirections requested");
817: goto cleanup_url_get;
818: }
1.69 jsg 819: break;
1.75 martynas 820: #ifndef SMALL
821: case 416: /* Requested Range Not Satisfiable */
822: warnx("File is already fully retrieved.");
823: goto cleanup_url_get;
1.78 martynas 824: #endif /* !SMALL */
1.171 ! jca 825: case 503:
! 826: if (retried++) {
! 827: warnx("Error retrieving file: %s", cp);
! 828: goto cleanup_url_get;
! 829: }
! 830: if (verbose)
! 831: fprintf(ttyout, "Retrying %s\n", origline);
! 832: rval = url_get(origline, proxyenv, savefile, lastfile);
! 833: goto cleanup_url_get;
1.69 jsg 834: default:
1.1 millert 835: warnx("Error retrieving file: %s", cp);
1.6 millert 836: goto cleanup_url_get;
1.1 millert 837: }
838:
839: /*
840: * Read the rest of the header.
841: */
1.40 fgsch 842: free(buf);
843: filesize = -1;
844:
1.62 ray 845: for (;;) {
1.134 jsing 846: if ((buf = ftp_readline(fin, tls, &len)) == NULL) {
1.40 fgsch 847: warn("Receiving HTTP reply");
848: goto cleanup_url_get;
849: }
1.61 deraadt 850:
1.40 fgsch 851: while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
852: buf[--len] = '\0';
853: if (len == 0)
1.1 millert 854: break;
1.80 martynas 855: #ifndef SMALL
1.40 fgsch 856: if (debug)
857: fprintf(ttyout, "received '%s'\n", buf);
1.80 martynas 858: #endif /* !SMALL */
1.1 millert 859:
1.40 fgsch 860: /* Look for some headers */
861: cp = buf;
1.1 millert 862: #define CONTENTLEN "Content-Length: "
1.40 fgsch 863: if (strncasecmp(cp, CONTENTLEN, sizeof(CONTENTLEN) - 1) == 0) {
1.104 sthen 864: size_t s;
1.40 fgsch 865: cp += sizeof(CONTENTLEN) - 1;
1.111 deraadt 866: if ((s = strcspn(cp, " \t")))
1.104 sthen 867: *(cp+s) = 0;
1.58 grunk 868: filesize = strtonum(cp, 0, LLONG_MAX, &errstr);
869: if (errstr != NULL)
1.40 fgsch 870: goto improper;
1.75 martynas 871: #ifndef SMALL
1.90 martynas 872: if (restart_point)
1.75 martynas 873: filesize += restart_point;
1.78 martynas 874: #endif /* !SMALL */
1.40 fgsch 875: #define LOCATION "Location: "
876: } else if (isredirect &&
877: strncasecmp(cp, LOCATION, sizeof(LOCATION) - 1) == 0) {
878: cp += sizeof(LOCATION) - 1;
1.144 sthen 879: /*
880: * If there is a colon before the first slash, this URI
881: * is not relative. RFC 3986 4.2
882: */
883: if (cp[strcspn(cp, ":/")] != ':') {
1.102 halex 884: #ifdef SMALL
885: errx(1, "Relative redirect not supported");
886: #else /* SMALL */
1.144 sthen 887: /* XXX doesn't handle protocol-relative URIs */
1.102 halex 888: if (*cp == '/') {
889: locbase = NULL;
890: cp++;
891: } else {
892: locbase = strdup(path);
893: if (locbase == NULL)
894: errx(1, "Can't allocate memory"
895: " for location base");
896: loctail = strchr(locbase, '#');
897: if (loctail != NULL)
898: *loctail = '\0';
899: loctail = strchr(locbase, '?');
900: if (loctail != NULL)
901: *loctail = '\0';
902: loctail = strrchr(locbase, '/');
903: if (loctail == NULL) {
904: free(locbase);
905: locbase = NULL;
906: } else
907: loctail[1] = '\0';
908: }
909: /* Contruct URL from relative redirect */
910: if (asprintf(&redirurl, "%s%s%s%s/%s%s",
911: scheme, full_host,
912: portnum ? ":" : "",
913: portnum ? portnum : "",
914: locbase ? locbase : "",
915: cp) == -1)
916: errx(1, "Cannot build "
917: "redirect URL");
918: free(locbase);
919: #endif /* SMALL */
920: } else if ((redirurl = strdup(cp)) == NULL)
921: errx(1, "Cannot allocate memory for URL");
922: loctail = strchr(redirurl, '#');
923: if (loctail != NULL)
924: *loctail = '\0';
1.40 fgsch 925: if (verbose)
1.102 halex 926: fprintf(ttyout, "Redirected to %s\n", redirurl);
1.165 procter 927: if (fin != NULL) {
1.40 fgsch 928: fclose(fin);
1.165 procter 929: fin = NULL;
930: }
1.166 procter 931: if (fd != -1) {
932: close(fd);
933: fd = -1;
1.165 procter 934: }
1.157 deraadt 935: rval = url_get(redirurl, proxyenv, savefile, lastfile);
1.102 halex 936: free(redirurl);
937: goto cleanup_url_get;
1.40 fgsch 938: }
1.108 tobias 939: free(buf);
1.1 millert 940: }
941:
1.17 millert 942: /* Open the output file. */
1.100 halex 943: if (!pipeout) {
1.75 martynas 944: #ifndef SMALL
945: if (resume)
1.83 martynas 946: out = open(savefile, O_CREAT | O_WRONLY | O_APPEND,
947: 0666);
1.75 martynas 948: else
1.78 martynas 949: #endif /* !SMALL */
1.75 martynas 950: out = open(savefile, O_CREAT | O_WRONLY | O_TRUNC,
951: 0666);
1.170 deraadt 952: if (out == -1) {
1.10 deraadt 953: warn("Can't open %s", savefile);
954: goto cleanup_url_get;
955: }
1.157 deraadt 956: } else {
1.17 millert 957: out = fileno(stdout);
1.157 deraadt 958: #ifdef SMALL
959: if (lastfile) {
960: if (pledge("stdio tty", NULL) == -1)
961: err(1, "pledge");
962: }
963: #endif
964: }
1.1 millert 965:
966: /* Trap signals */
967: oldintr = NULL;
1.97 martynas 968: oldinti = NULL;
1.1 millert 969: if (setjmp(httpabort)) {
970: if (oldintr)
1.2 millert 971: (void)signal(SIGINT, oldintr);
1.97 martynas 972: if (oldinti)
973: (void)signal(SIGINFO, oldinti);
1.6 millert 974: goto cleanup_url_get;
1.1 millert 975: }
976: oldintr = signal(SIGINT, aborthttp);
977:
978: bytes = 0;
979: hashbytes = mark;
1.84 martynas 980: progressmeter(-1, path);
1.43 millert 981:
982: free(buf);
1.1 millert 983:
984: /* Finally, suck down the file. */
1.113 tedu 985: if ((buf = malloc(buflen)) == NULL)
1.47 deraadt 986: errx(1, "Can't allocate memory for transfer buffer");
1.1 millert 987: i = 0;
1.61 deraadt 988: len = 1;
1.97 martynas 989: oldinti = signal(SIGINFO, psummary);
1.61 deraadt 990: while (len > 0) {
1.134 jsing 991: len = ftp_read(fin, tls, buf, buflen);
1.1 millert 992: bytes += len;
1.61 deraadt 993: for (cp = buf, wlen = len; wlen > 0; wlen -= i, cp += i) {
994: if ((i = write(out, cp, wlen)) == -1) {
1.1 millert 995: warn("Writing %s", savefile);
1.97 martynas 996: signal(SIGINFO, oldinti);
1.6 millert 997: goto cleanup_url_get;
1.1 millert 998: }
999: else if (i == 0)
1000: break;
1001: }
1002: if (hash && !progress) {
1003: while (bytes >= hashbytes) {
1.10 deraadt 1004: (void)putc('#', ttyout);
1.1 millert 1005: hashbytes += mark;
1006: }
1.10 deraadt 1007: (void)fflush(ttyout);
1.1 millert 1008: }
1009: }
1.97 martynas 1010: signal(SIGINFO, oldinti);
1.1 millert 1011: if (hash && !progress && bytes > 0) {
1012: if (bytes < mark)
1.10 deraadt 1013: (void)putc('#', ttyout);
1014: (void)putc('\n', ttyout);
1015: (void)fflush(ttyout);
1.1 millert 1016: }
1017: if (len != 0) {
1018: warn("Reading from socket");
1.6 millert 1019: goto cleanup_url_get;
1.1 millert 1020: }
1.84 martynas 1021: progressmeter(1, NULL);
1.75 martynas 1022: if (
1023: #ifndef SMALL
1024: !resume &&
1.78 martynas 1025: #endif /* !SMALL */
1.75 martynas 1026: filesize != -1 && len == 0 && bytes != filesize) {
1.24 deraadt 1027: if (verbose)
1028: fputs("Read short file.\n", ttyout);
1029: goto cleanup_url_get;
1030: }
1031:
1.1 millert 1032: if (verbose)
1.97 martynas 1033: ptransfer(0);
1.2 millert 1034: (void)signal(SIGINT, oldintr);
1.1 millert 1035:
1.40 fgsch 1036: rval = 0;
1037: goto cleanup_url_get;
1.1 millert 1038:
1.14 millert 1039: noftpautologin:
1040: warnx(
1041: "Auto-login using ftp URLs isn't supported when using $ftp_proxy");
1042: goto cleanup_url_get;
1043:
1.1 millert 1044: improper:
1.8 millert 1045: warnx("Improper response from %s", host);
1.14 millert 1046:
1.6 millert 1047: cleanup_url_get:
1.154 deraadt 1048: #ifndef NOSSL
1.134 jsing 1049: if (tls != NULL) {
1.167 jsing 1050: if (tls_session_fd != -1)
1051: dprintf(STDERR_FILENO, "tls session resumed: %s\n",
1052: tls_conn_session_resumed(tls) ? "yes" : "no");
1.163 sunil 1053: do {
1054: i = tls_close(tls);
1055: } while (i == TLS_WANT_POLLIN || i == TLS_WANT_POLLOUT);
1.134 jsing 1056: tls_free(tls);
1.61 deraadt 1057: }
1.102 halex 1058: free(full_host);
1.128 jca 1059: free(sslhost);
1.154 deraadt 1060: #endif /* !NOSSL */
1.165 procter 1061: if (fin != NULL) {
1.40 fgsch 1062: fclose(fin);
1.165 procter 1063: fin = NULL;
1064: }
1.166 procter 1065: if (fd != -1) {
1066: close(fd);
1067: fd = -1;
1.165 procter 1068: }
1.162 sthen 1069: if (out >= 0 && out != fileno(stdout))
1070: close(out);
1.67 steven 1071: free(buf);
1.136 bluhm 1072: free(proxyhost);
1.67 steven 1073: free(proxyurl);
1.62 ray 1074: free(newline);
1.123 guenther 1075: free(credentials);
1.40 fgsch 1076: return (rval);
1.1 millert 1077: }
1078:
1079: /*
1080: * Abort a http retrieval
1081: */
1.51 deraadt 1082: /* ARGSUSED */
1.1 millert 1083: void
1.51 deraadt 1084: aborthttp(int signo)
1.1 millert 1085: {
1086:
1087: alarmtimer(0);
1.10 deraadt 1088: fputs("\nhttp fetch aborted.\n", ttyout);
1089: (void)fflush(ttyout);
1.1 millert 1090: longjmp(httpabort, 1);
1091: }
1092:
1093: /*
1.22 deraadt 1094: * Abort a http retrieval
1095: */
1.51 deraadt 1096: /* ARGSUSED */
1.22 deraadt 1097: void
1.51 deraadt 1098: abortfile(int signo)
1.22 deraadt 1099: {
1100:
1101: alarmtimer(0);
1102: fputs("\nfile fetch aborted.\n", ttyout);
1103: (void)fflush(ttyout);
1104: longjmp(httpabort, 1);
1105: }
1106:
1107: /*
1.1 millert 1108: * Retrieve multiple files from the command line, transferring
1109: * files of the form "host:path", "ftp://host/path" using the
1110: * ftp protocol, and files of the form "http://host/path" using
1111: * the http protocol.
1.2 millert 1112: * If path has a trailing "/", then return (-1);
1.1 millert 1113: * the path will be cd-ed into and the connection remains open,
1114: * and the function will return -1 (to indicate the connection
1115: * is alive).
1116: * If an error occurs the return value will be the offset+1 in
1117: * argv[] of the file that caused a problem (i.e, argv[x]
1118: * returns x+1)
1119: * Otherwise, 0 is returned if all files retrieved successfully.
1120: */
1121: int
1.50 deraadt 1122: auto_fetch(int argc, char *argv[], char *outfile)
1.1 millert 1123: {
1124: char *xargv[5];
1.62 ray 1125: char *cp, *url, *host, *dir, *file, *portnum;
1126: char *username, *pass, *pathstart;
1.6 millert 1127: char *ftpproxy, *httpproxy;
1.157 deraadt 1128: int rval, xargc, lastfile;
1.14 millert 1129: volatile int argpos;
1.49 krw 1130: int dirhasglob, filehasglob, oautologin;
1.137 deraadt 1131: char rempath[PATH_MAX];
1.1 millert 1132:
1133: argpos = 0;
1134:
1135: if (setjmp(toplevel)) {
1136: if (connected)
1137: disconnect(0, NULL);
1.2 millert 1138: return (argpos + 1);
1.1 millert 1139: }
1.3 millert 1140: (void)signal(SIGINT, (sig_t)intr);
1141: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 millert 1142:
1.45 millert 1143: if ((ftpproxy = getenv(FTP_PROXY)) != NULL && *ftpproxy == '\0')
1144: ftpproxy = NULL;
1145: if ((httpproxy = getenv(HTTP_PROXY)) != NULL && *httpproxy == '\0')
1146: httpproxy = NULL;
1.6 millert 1147:
1.1 millert 1148: /*
1149: * Loop through as long as there's files to fetch.
1150: */
1.123 guenther 1151: username = pass = NULL;
1.62 ray 1152: for (rval = 0; (rval == 0) && (argpos < argc); free(url), argpos++) {
1.1 millert 1153: if (strchr(argv[argpos], ':') == NULL)
1154: break;
1.123 guenther 1155:
1156: free(username);
1157: free(pass);
1.62 ray 1158: host = dir = file = portnum = username = pass = NULL;
1.1 millert 1159:
1.157 deraadt 1160: lastfile = (argv[argpos+1] == NULL);
1161:
1.1 millert 1162: /*
1163: * We muck with the string, so we make a copy.
1164: */
1.62 ray 1165: url = strdup(argv[argpos]);
1166: if (url == NULL)
1.1 millert 1167: errx(1, "Can't allocate memory for auto-fetch.");
1168:
1169: /*
1170: * Try HTTP URL-style arguments first.
1171: */
1.62 ray 1172: if (strncasecmp(url, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.154 deraadt 1173: #ifndef NOSSL
1.61 deraadt 1174: /* even if we compiled without SSL, url_get will check */
1.62 ray 1175: strncasecmp(url, HTTPS_URL, sizeof(HTTPS_URL) -1) == 0 ||
1.154 deraadt 1176: #endif /* !NOSSL */
1.62 ray 1177: strncasecmp(url, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
1.54 fgsch 1178: redirect_loop = 0;
1.171 ! jca 1179: retried = 0;
1.157 deraadt 1180: if (url_get(url, httpproxy, outfile, lastfile) == -1)
1.1 millert 1181: rval = argpos + 1;
1182: continue;
1183: }
1184:
1185: /*
1.6 millert 1186: * Try FTP URL-style arguments next. If ftpproxy is
1187: * set, use url_get() instead of standard ftp.
1188: * Finally, try host:file.
1.1 millert 1189: */
1.62 ray 1190: host = url;
1191: if (strncasecmp(url, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
1.37 heko 1192: char *passend, *passagain, *userend;
1.31 itojun 1193:
1.6 millert 1194: if (ftpproxy) {
1.157 deraadt 1195: if (url_get(url, ftpproxy, outfile, lastfile) == -1)
1.6 millert 1196: rval = argpos + 1;
1197: continue;
1198: }
1.1 millert 1199: host += sizeof(FTP_URL) - 1;
1.8 millert 1200: dir = strchr(host, '/');
1.1 millert 1201:
1.8 millert 1202: /* Look for [user:pass@]host[:port] */
1.31 itojun 1203:
1204: /* check if we have "user:pass@" */
1.37 heko 1205: userend = strchr(host, ':');
1.31 itojun 1206: passend = strchr(host, '@');
1207: if (passend && userend && userend < passend &&
1208: (!dir || passend < dir)) {
1.62 ray 1209: username = host;
1.31 itojun 1210: pass = userend + 1;
1211: host = passend + 1;
1212: *userend = *passend = '\0';
1.37 heko 1213: passagain = strchr(host, '@');
1.42 deraadt 1214: if (strchr(pass, '@') != NULL ||
1.37 heko 1215: (passagain != NULL && passagain < dir)) {
1216: warnx(at_encoding_warning);
1.123 guenther 1217: username = pass = NULL;
1.37 heko 1218: goto bad_ftp_url;
1.42 deraadt 1219: }
1.31 itojun 1220:
1.77 martynas 1221: if (EMPTYSTRING(username)) {
1.11 millert 1222: bad_ftp_url:
1.31 itojun 1223: warnx("Invalid URL: %s", argv[argpos]);
1224: rval = argpos + 1;
1.123 guenther 1225: username = pass = NULL;
1.31 itojun 1226: continue;
1227: }
1.62 ray 1228: username = urldecode(username);
1.37 heko 1229: pass = urldecode(pass);
1.8 millert 1230: }
1.31 itojun 1231:
1232: /* check [host]:port, or [host] */
1233: if (host[0] == '[') {
1234: cp = strchr(host, ']');
1235: if (cp && (!dir || cp < dir)) {
1236: if (cp + 1 == dir || cp[1] == ':') {
1237: host++;
1238: *cp++ = '\0';
1239: } else
1240: cp = NULL;
1241: } else
1242: cp = host;
1.25 itojun 1243: } else
1244: cp = host;
1.31 itojun 1245:
1246: /* split off host[:port] if there is */
1247: if (cp) {
1248: portnum = strchr(cp, ':');
1.52 henning 1249: pathstart = strchr(cp, '/');
1250: /* : in path is not a port # indicator */
1251: if (portnum && pathstart &&
1252: pathstart < portnum)
1253: portnum = NULL;
1254:
1.31 itojun 1255: if (!portnum)
1256: ;
1257: else {
1258: if (!dir)
1259: ;
1260: else if (portnum + 1 < dir) {
1261: *portnum++ = '\0';
1262: /*
1263: * XXX should check if portnum
1264: * is decimal number
1265: */
1266: } else {
1267: /* empty portnum */
1268: goto bad_ftp_url;
1269: }
1270: }
1271: } else
1272: portnum = NULL;
1.8 millert 1273: } else { /* classic style `host:file' */
1274: dir = strchr(host, ':');
1275: }
1.1 millert 1276: if (EMPTYSTRING(host)) {
1277: rval = argpos + 1;
1278: continue;
1279: }
1280:
1281: /*
1.9 millert 1282: * If dir is NULL, the file wasn't specified
1.1 millert 1283: * (URL looked something like ftp://host)
1284: */
1.8 millert 1285: if (dir != NULL)
1286: *dir++ = '\0';
1.1 millert 1287:
1288: /*
1289: * Extract the file and (if present) directory name.
1290: */
1.42 deraadt 1291: if (!EMPTYSTRING(dir)) {
1.8 millert 1292: cp = strrchr(dir, '/');
1.1 millert 1293: if (cp != NULL) {
1294: *cp++ = '\0';
1295: file = cp;
1296: } else {
1297: file = dir;
1298: dir = NULL;
1299: }
1300: }
1.80 martynas 1301: #ifndef SMALL
1.1 millert 1302: if (debug)
1.42 deraadt 1303: fprintf(ttyout,
1304: "user %s:%s host %s port %s dir %s file %s\n",
1.76 martynas 1305: username, pass ? "XXXX" : NULL, host, portnum,
1306: dir, file);
1.80 martynas 1307: #endif /* !SMALL */
1.1 millert 1308:
1309: /*
1.49 krw 1310: * Set up the connection.
1.1 millert 1311: */
1.49 krw 1312: if (connected)
1313: disconnect(0, NULL);
1314: xargv[0] = __progname;
1315: xargv[1] = host;
1.8 millert 1316: xargv[2] = NULL;
1.49 krw 1317: xargc = 2;
1318: if (!EMPTYSTRING(portnum)) {
1319: xargv[2] = portnum;
1320: xargv[3] = NULL;
1321: xargc = 3;
1322: }
1323: oautologin = autologin;
1.88 martynas 1324: if (username == NULL)
1.89 halex 1325: anonftp = 1;
1326: else {
1327: anonftp = 0;
1.49 krw 1328: autologin = 0;
1.89 halex 1329: }
1.49 krw 1330: setpeer(xargc, xargv);
1331: autologin = oautologin;
1.87 martynas 1332: if (connected == 0 ||
1333: (connected == 1 && autologin && (username == NULL ||
1334: !ftp_login(host, username, pass)))) {
1.49 krw 1335: warnx("Can't connect or login to host `%s'", host);
1.8 millert 1336: rval = argpos + 1;
1337: continue;
1.1 millert 1338: }
1.49 krw 1339:
1340: /* Always use binary transfers. */
1341: setbinary(0, NULL);
1.1 millert 1342:
1.4 millert 1343: dirhasglob = filehasglob = 0;
1344: if (doglob) {
1.42 deraadt 1345: if (!EMPTYSTRING(dir) &&
1.4 millert 1346: strpbrk(dir, "*?[]{}") != NULL)
1347: dirhasglob = 1;
1.42 deraadt 1348: if (!EMPTYSTRING(file) &&
1.4 millert 1349: strpbrk(file, "*?[]{}") != NULL)
1350: filehasglob = 1;
1351: }
1352:
1.1 millert 1353: /* Change directories, if necessary. */
1.42 deraadt 1354: if (!EMPTYSTRING(dir) && !dirhasglob) {
1.1 millert 1355: xargv[0] = "cd";
1356: xargv[1] = dir;
1357: xargv[2] = NULL;
1358: cd(2, xargv);
1.42 deraadt 1359: if (!dirchange) {
1.1 millert 1360: rval = argpos + 1;
1361: continue;
1362: }
1363: }
1364:
1365: if (EMPTYSTRING(file)) {
1.86 martynas 1366: #ifndef SMALL
1.1 millert 1367: rval = -1;
1.86 martynas 1368: #else /* !SMALL */
1369: recvrequest("NLST", "-", NULL, "w", 0, 0);
1370: rval = 0;
1371: #endif /* !SMALL */
1.1 millert 1372: continue;
1373: }
1374:
1.21 marc 1375: if (verbose)
1.10 deraadt 1376: fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "", file);
1.1 millert 1377:
1.4 millert 1378: if (dirhasglob) {
1379: snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
1380: file = rempath;
1381: }
1382:
1383: /* Fetch the file(s). */
1.10 deraadt 1384: xargc = 2;
1.1 millert 1385: xargv[0] = "get";
1386: xargv[1] = file;
1387: xargv[2] = NULL;
1.4 millert 1388: if (dirhasglob || filehasglob) {
1389: int ointeractive;
1390:
1391: ointeractive = interactive;
1392: interactive = 0;
1393: xargv[0] = "mget";
1.78 martynas 1394: #ifndef SMALL
1395: if (resume) {
1396: xargc = 3;
1397: xargv[1] = "-c";
1398: xargv[2] = file;
1399: xargv[3] = NULL;
1400: }
1401: #endif /* !SMALL */
1.10 deraadt 1402: mget(xargc, xargv);
1.5 millert 1403: interactive = ointeractive;
1.10 deraadt 1404: } else {
1.17 millert 1405: if (outfile != NULL) {
1406: xargv[2] = outfile;
1407: xargv[3] = NULL;
1.10 deraadt 1408: xargc++;
1409: }
1.75 martynas 1410: #ifndef SMALL
1411: if (resume)
1412: reget(xargc, xargv);
1413: else
1.78 martynas 1414: #endif /* !SMALL */
1.75 martynas 1415: get(xargc, xargv);
1.10 deraadt 1416: }
1.1 millert 1417:
1.4 millert 1418: if ((code / 100) != COMPLETE)
1.1 millert 1419: rval = argpos + 1;
1420: }
1421: if (connected && rval != -1)
1422: disconnect(0, NULL);
1423: return (rval);
1.37 heko 1424: }
1425:
1426: char *
1.50 deraadt 1427: urldecode(const char *str)
1.37 heko 1428: {
1.53 deraadt 1429: char *ret, c;
1430: int i, reallen;
1.37 heko 1431:
1.53 deraadt 1432: if (str == NULL)
1433: return NULL;
1434: if ((ret = malloc(strlen(str)+1)) == NULL)
1435: err(1, "Can't allocate memory for URL decoding");
1436: for (i = 0, reallen = 0; str[i] != '\0'; i++, reallen++, ret++) {
1437: c = str[i];
1438: if (c == '+') {
1439: *ret = ' ';
1440: continue;
1441: }
1.61 deraadt 1442:
1443: /* Cannot use strtol here because next char
1444: * after %xx may be a digit.
1445: */
1.143 guenther 1446: if (c == '%' && isxdigit((unsigned char)str[i+1]) &&
1447: isxdigit((unsigned char)str[i+2])) {
1.53 deraadt 1448: *ret = hextochar(&str[i+1]);
1449: i+=2;
1450: continue;
1451: }
1452: *ret = c;
1453: }
1454: *ret = '\0';
1455:
1456: return ret-reallen;
1.123 guenther 1457: }
1458:
1459: char *
1460: recode_credentials(const char *userinfo)
1461: {
1462: char *ui, *creds;
1463: size_t ulen, credsize;
1464:
1465: /* url-decode the user and pass */
1466: ui = urldecode(userinfo);
1467:
1468: ulen = strlen(ui);
1469: credsize = (ulen + 2) / 3 * 4 + 1;
1470: creds = malloc(credsize);
1471: if (creds == NULL)
1472: errx(1, "out of memory");
1473: if (b64_ntop(ui, ulen, creds, credsize) == -1)
1474: errx(1, "error in base64 encoding");
1475: free(ui);
1476: return (creds);
1.37 heko 1477: }
1478:
1479: char
1.50 deraadt 1480: hextochar(const char *str)
1.37 heko 1481: {
1.143 guenther 1482: unsigned char c, ret;
1.37 heko 1483:
1.53 deraadt 1484: c = str[0];
1485: ret = c;
1486: if (isalpha(c))
1487: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1488: else
1489: ret -= '0';
1490: ret *= 16;
1491:
1492: c = str[1];
1493: ret += c;
1494: if (isalpha(c))
1495: ret -= isupper(c) ? 'A' - 10 : 'a' - 10;
1496: else
1497: ret -= '0';
1498: return ret;
1.25 itojun 1499: }
1500:
1501: int
1.50 deraadt 1502: isurl(const char *p)
1.25 itojun 1503: {
1.27 millert 1504:
1.26 deraadt 1505: if (strncasecmp(p, FTP_URL, sizeof(FTP_URL) - 1) == 0 ||
1506: strncasecmp(p, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
1.154 deraadt 1507: #ifndef NOSSL
1.61 deraadt 1508: strncasecmp(p, HTTPS_URL, sizeof(HTTPS_URL) - 1) == 0 ||
1.154 deraadt 1509: #endif /* !NOSSL */
1.27 millert 1510: strncasecmp(p, FILE_URL, sizeof(FILE_URL) - 1) == 0 ||
1511: strstr(p, ":/"))
1512: return (1);
1513: return (0);
1.1 millert 1514: }
1.61 deraadt 1515:
1516: char *
1.134 jsing 1517: ftp_readline(FILE *fp, struct tls *tls, size_t *lenp)
1.61 deraadt 1518: {
1519: if (fp != NULL)
1520: return fparseln(fp, lenp, NULL, "\0\0\0", 0);
1.154 deraadt 1521: #ifndef NOSSL
1.134 jsing 1522: else if (tls != NULL)
1523: return SSL_readline(tls, lenp);
1.154 deraadt 1524: #endif /* !NOSSL */
1.61 deraadt 1525: else
1526: return NULL;
1527: }
1528:
1.65 ray 1529: size_t
1.134 jsing 1530: ftp_read(FILE *fp, struct tls *tls, char *buf, size_t len)
1.61 deraadt 1531: {
1.154 deraadt 1532: #ifndef NOSSL
1.161 guenther 1533: ssize_t tret;
1.152 krw 1534: #endif
1.142 jsing 1535: size_t ret = 0;
1536:
1.61 deraadt 1537: if (fp != NULL)
1538: ret = fread(buf, sizeof(char), len, fp);
1.154 deraadt 1539: #ifndef NOSSL
1.142 jsing 1540: else if (tls != NULL) {
1.161 guenther 1541: do {
1542: tret = tls_read(tls, buf, len);
1543: } while (tret == TLS_WANT_POLLIN || tret == TLS_WANT_POLLOUT);
1.170 deraadt 1544: if (tret == -1)
1.153 jsing 1545: errx(1, "SSL read error: %s", tls_error(tls));
1.161 guenther 1546: ret = (size_t)tret;
1.65 ray 1547: }
1.154 deraadt 1548: #endif /* !NOSSL */
1.61 deraadt 1549: return (ret);
1550: }
1551:
1552: int
1.134 jsing 1553: ftp_printf(FILE *fp, struct tls *tls, const char *fmt, ...)
1.61 deraadt 1554: {
1555: int ret;
1556: va_list ap;
1557:
1558: va_start(ap, fmt);
1559:
1560: if (fp != NULL)
1561: ret = vfprintf(fp, fmt, ap);
1.154 deraadt 1562: #ifndef NOSSL
1.134 jsing 1563: else if (tls != NULL)
1564: ret = SSL_vprintf(tls, fmt, ap);
1.154 deraadt 1565: #endif /* !NOSSL */
1.61 deraadt 1566: else
1.92 jsg 1567: ret = 0;
1.61 deraadt 1568:
1569: va_end(ap);
1.136 bluhm 1570: #ifndef SMALL
1571: if (debug) {
1572: va_start(ap, fmt);
1573: ret = vfprintf(ttyout, fmt, ap);
1574: va_end(ap);
1575: }
1576: #endif /* !SMALL */
1.61 deraadt 1577: return (ret);
1578: }
1579:
1.154 deraadt 1580: #ifndef NOSSL
1.61 deraadt 1581: int
1.134 jsing 1582: SSL_vprintf(struct tls *tls, const char *fmt, va_list ap)
1.61 deraadt 1583: {
1.139 bluhm 1584: char *string, *buf;
1.141 beck 1585: size_t len;
1.61 deraadt 1586: int ret;
1587:
1588: if ((ret = vasprintf(&string, fmt, ap)) == -1)
1589: return ret;
1.139 bluhm 1590: buf = string;
1591: len = ret;
1592: while (len > 0) {
1.141 beck 1593: ret = tls_write(tls, buf, len);
1594: if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT)
1.139 bluhm 1595: continue;
1.170 deraadt 1596: if (ret == -1)
1.153 jsing 1597: errx(1, "SSL write error: %s", tls_error(tls));
1.141 beck 1598: buf += ret;
1599: len -= ret;
1.139 bluhm 1600: }
1.61 deraadt 1601: free(string);
1602: return ret;
1603: }
1604:
1605: char *
1.134 jsing 1606: SSL_readline(struct tls *tls, size_t *lenp)
1.61 deraadt 1607: {
1.141 beck 1608: size_t i, len;
1.61 deraadt 1609: char *buf, *q, c;
1.109 sthen 1610: int ret;
1.61 deraadt 1611:
1612: len = 128;
1613: if ((buf = malloc(len)) == NULL)
1614: errx(1, "Can't allocate memory for transfer buffer");
1615: for (i = 0; ; i++) {
1616: if (i >= len - 1) {
1.132 doug 1617: if ((q = reallocarray(buf, len, 2)) == NULL)
1.61 deraadt 1618: errx(1, "Can't expand transfer buffer");
1619: buf = q;
1620: len *= 2;
1621: }
1.161 guenther 1622: do {
1623: ret = tls_read(tls, &c, 1);
1624: } while (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT);
1.170 deraadt 1625: if (ret == -1)
1.140 jsing 1626: errx(1, "SSL read error: %s", tls_error(tls));
1.126 jsing 1627:
1.61 deraadt 1628: buf[i] = c;
1.145 martijn 1629: if (c == '\n') {
1630: buf[i] = '\0';
1.61 deraadt 1631: break;
1.145 martijn 1632: }
1.61 deraadt 1633: }
1634: *lenp = i;
1635: return (buf);
1636: }
1637:
1638: int
1.81 espie 1639: proxy_connect(int socket, char *host, char *cookie)
1.61 deraadt 1640: {
1.66 ray 1641: int l;
1.61 deraadt 1642: char buf[1024];
1643: char *connstr, *hosttail, *port;
1644:
1645: if (*host == '[' && (hosttail = strrchr(host, ']')) != NULL &&
1646: (hosttail[1] == '\0' || hosttail[1] == ':')) {
1647: host++;
1648: *hosttail++ = '\0';
1649: } else
1650: hosttail = host;
1651:
1652: port = strrchr(hosttail, ':'); /* find portnum */
1653: if (port != NULL)
1654: *port++ = '\0';
1655: if (!port)
1656: port = "443";
1657:
1.81 espie 1658: if (cookie) {
1659: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n"
1660: "Proxy-Authorization: Basic %s\r\n%s\r\n\r\n",
1661: host, port, cookie, HTTP_USER_AGENT);
1662: } else {
1663: l = asprintf(&connstr, "CONNECT %s:%s HTTP/1.1\r\n%s\r\n\r\n",
1664: host, port, HTTP_USER_AGENT);
1665: }
1666:
1.66 ray 1667: if (l == -1)
1.61 deraadt 1668: errx(1, "Could not allocate memory to assemble connect string!");
1.80 martynas 1669: #ifndef SMALL
1.68 ray 1670: if (debug)
1671: printf("%s", connstr);
1.80 martynas 1672: #endif /* !SMALL */
1.66 ray 1673: if (write(socket, connstr, l) != l)
1.68 ray 1674: err(1, "Could not send connect string");
1.61 deraadt 1675: read(socket, &buf, sizeof(buf)); /* only proxy header XXX: error handling? */
1.71 ray 1676: free(connstr);
1.61 deraadt 1677: return(200);
1678: }
1.158 jca 1679: #endif /* !NOSSL */
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