blob: cb96e65a388f50648ac38c895ab2a0b78b6701fd [file] [log] [blame]
Eric Andersen96700832000-09-04 15:15:55 +00001/* vi: set sw=4 ts=4: */
2/*
Eric Andersen79757c92001-04-05 21:45:54 +00003 * wget - retrieve a file using HTTP or FTP
Eric Andersen96700832000-09-04 15:15:55 +00004 *
Eric Andersen4e573f42000-11-14 23:29:24 +00005 * Chip Rosenthal Covad Communications <chip@laserlink.net>
Eric Andersenb520e082000-10-03 00:21:45 +00006 *
Eric Andersen96700832000-09-04 15:15:55 +00007 */
8
Eric Andersen96700832000-09-04 15:15:55 +00009#include <stdio.h>
Eric Andersendff9d542001-01-26 02:04:49 +000010#include <errno.h>
Eric Andersen96700832000-09-04 15:15:55 +000011#include <stdlib.h>
12#include <unistd.h>
13#include <ctype.h>
14#include <string.h>
Eric Andersenb520e082000-10-03 00:21:45 +000015#include <unistd.h>
16#include <signal.h>
17#include <sys/ioctl.h>
Eric Andersen96700832000-09-04 15:15:55 +000018
Eric Andersenb520e082000-10-03 00:21:45 +000019#include <sys/time.h>
Eric Andersen96700832000-09-04 15:15:55 +000020#include <sys/types.h>
21#include <sys/stat.h>
22#include <sys/socket.h>
23#include <netinet/in.h>
24#include <arpa/inet.h>
25#include <netdb.h>
26
Eric Andersencbe31da2001-02-20 06:14:08 +000027#include "busybox.h"
28
Eric Andersened3ef502001-01-27 08:24:39 +000029/* Stupid libc5 doesn't define this... */
30#ifndef timersub
31#define timersub(a, b, result) \
32 do { \
33 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
34 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
35 if ((result)->tv_usec < 0) { \
36 --(result)->tv_sec; \
37 (result)->tv_usec += 1000000; \
38 } \
39 } while (0)
40#endif
Eric Andersen96700832000-09-04 15:15:55 +000041
Eric Andersen79757c92001-04-05 21:45:54 +000042struct host_info {
43 char *host;
44 int port;
45 char *path;
46 int is_ftp;
47 char *user;
48};
49
50static void parse_url(char *url, struct host_info *h);
Eric Andersen3e6ff902001-03-09 21:24:12 +000051static FILE *open_socket(char *host, int port);
52static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
Eric Andersen79757c92001-04-05 21:45:54 +000053static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf);
Eric Andersen3e6ff902001-03-09 21:24:12 +000054static void progressmeter(int flag);
Eric Andersen96700832000-09-04 15:15:55 +000055
Eric Andersenb520e082000-10-03 00:21:45 +000056/* Globals (can be accessed from signal handlers */
57static off_t filesize = 0; /* content-length of the file */
Eric Andersen6d7fa432001-04-10 18:17:05 +000058static int chunked = 0; /* chunked transfer encoding */
Eric Andersen370fb082001-01-20 20:07:00 +000059#ifdef BB_FEATURE_WGET_STATUSBAR
Eric Andersenb520e082000-10-03 00:21:45 +000060static char *curfile; /* Name of current file being transferred. */
61static struct timeval start; /* Time a transfer started. */
Mark Whitley30ac01c2001-04-17 18:13:16 +000062static volatile unsigned long statbytes = 0; /* Number of bytes transferred so far. */
Eric Andersenb520e082000-10-03 00:21:45 +000063/* For progressmeter() -- number of seconds before xfer considered "stalled" */
Mark Whitley59ab0252001-01-23 22:30:04 +000064static const int STALLTIME = 5;
Eric Andersenb520e082000-10-03 00:21:45 +000065#endif
Eric Andersen7d697012001-01-24 20:28:35 +000066
Eric Andersen3e6ff902001-03-09 21:24:12 +000067static void close_and_delete_outfile(FILE* output, char *fname_out, int do_continue)
Eric Andersen7d697012001-01-24 20:28:35 +000068{
69 if (output != stdout && do_continue==0) {
70 fclose(output);
71 unlink(fname_out);
72 }
73}
Eric Andersen96700832000-09-04 15:15:55 +000074
Matt Kraai854125f2001-05-09 19:15:46 +000075/* Read NMEMB elements of SIZE bytes into PTR from STREAM. Returns the
76 * number of elements read, and a short count if an eof or non-interrupt
77 * error is encountered. */
78static size_t safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream)
79{
80 size_t ret = 0;
81
82 do {
83 clearerr(stream);
84 ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream);
85 } while (ret < nmemb && ferror(stream) && errno == EINTR);
86
87 return ret;
88}
89
90/* Write NMEMB elements of SIZE bytes from PTR to STREAM. Returns the
91 * number of elements written, and a short count if an eof or non-interrupt
92 * error is encountered. */
93static size_t safe_fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream)
94{
95 size_t ret = 0;
96
97 do {
98 clearerr(stream);
99 ret += fwrite((char *)ptr + (ret * size), size, nmemb - ret, stream);
100 } while (ret < nmemb && ferror(stream) && errno == EINTR);
101
102 return ret;
103}
104
105/* Read a line or SIZE - 1 bytes into S, whichever is less, from STREAM.
106 * Returns S, or NULL if an eof or non-interrupt error is encountered. */
107static char *safe_fgets(char *s, int size, FILE *stream)
108{
109 char *ret;
110
111 do {
112 clearerr(stream);
113 ret = fgets(s, size, stream);
114 } while (ret == NULL && ferror(stream) && errno == EINTR);
115
116 return ret;
117}
118
Eric Andersen79757c92001-04-05 21:45:54 +0000119#define close_delete_and_die(s...) { \
120 close_and_delete_outfile(output, fname_out, do_continue); \
121 error_msg_and_die(s); }
122
123
124#ifdef BB_FEATURE_WGET_AUTHENTICATION
125/*
126 * Base64-encode character string
127 * oops... isn't something similar in uuencode.c?
128 * It would be better to use already existing code
129 */
130char *base64enc(char *p, char *buf, int len) {
131
132 char al[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
133 "0123456789+/";
134 char *s = buf;
135
136 while(*p) {
137 if (s >= buf+len-4)
138 error_msg_and_die("buffer overflow");
139 *(s++) = al[(*p >> 2) & 0x3F];
140 *(s++) = al[((*p << 4) & 0x30) | ((*(p+1) >> 4) & 0x0F)];
141 *s = *(s+1) = '=';
142 *(s+2) = 0;
143 if (! *(++p)) break;
144 *(s++) = al[((*p << 2) & 0x3C) | ((*(p+1) >> 6) & 0x03)];
145 if (! *(++p)) break;
146 *(s++) = al[*(p++) & 0x3F];
147 }
148
149 return buf;
150}
151#endif
152
Eric Andersen96700832000-09-04 15:15:55 +0000153int wget_main(int argc, char **argv)
154{
Eric Andersen79757c92001-04-05 21:45:54 +0000155 int n, try=5, status;
156 int port;
157 char *proxy;
Eric Andersen29edd002000-12-09 16:55:35 +0000158 char *s, buf[512];
159 struct stat sbuf;
160
Eric Andersen79757c92001-04-05 21:45:54 +0000161 struct host_info server, target;
162
163 FILE *sfp = NULL; /* socket to web/ftp server */
164 FILE *dfp = NULL; /* socket to ftp server (data) */
Eric Andersen96700832000-09-04 15:15:55 +0000165 char *fname_out = NULL; /* where to direct output (-O) */
166 int do_continue = 0; /* continue a prev transfer (-c) */
167 long beg_range = 0L; /* range at which continue begins */
168 int got_clen = 0; /* got content-length: from server */
Eric Andersen29edd002000-12-09 16:55:35 +0000169 FILE *output; /* socket to web server */
170 int quiet_flag = FALSE; /* Be verry, verry quiet... */
171
Eric Andersen96700832000-09-04 15:15:55 +0000172 /*
173 * Crack command line.
174 */
Glenn L McGrath1bca5ed2000-12-09 08:12:06 +0000175 while ((n = getopt(argc, argv, "cqO:")) != EOF) {
Eric Andersen96700832000-09-04 15:15:55 +0000176 switch (n) {
177 case 'c':
178 ++do_continue;
179 break;
Glenn L McGrath1bca5ed2000-12-09 08:12:06 +0000180 case 'q':
181 quiet_flag = TRUE;
182 break;
Eric Andersen96700832000-09-04 15:15:55 +0000183 case 'O':
Randolph Chung02553a22000-12-07 03:53:47 +0000184 /* can't set fname_out to NULL if outputting to stdout, because
185 * this gets interpreted as the auto-gen output filename
186 * case below - tausq@debian.org
187 */
Matt Kraai65317ea2001-04-11 20:03:01 +0000188 fname_out = optarg;
Eric Andersen96700832000-09-04 15:15:55 +0000189 break;
190 default:
Eric Andersen67991cf2001-02-14 21:23:06 +0000191 show_usage();
Eric Andersen96700832000-09-04 15:15:55 +0000192 }
193 }
Eric Andersen25b669c2000-10-02 23:19:38 +0000194
Eric Andersen96700832000-09-04 15:15:55 +0000195 if (argc - optind != 1)
Eric Andersen67991cf2001-02-14 21:23:06 +0000196 show_usage();
Eric Andersen25b669c2000-10-02 23:19:38 +0000197
Eric Andersen79757c92001-04-05 21:45:54 +0000198 parse_url(argv[optind], &target);
199 server.host = target.host;
200 server.port = target.port;
201
Eric Andersen96700832000-09-04 15:15:55 +0000202 /*
Eric Andersenf3b2b522000-12-07 22:42:11 +0000203 * Use the proxy if necessary.
Eric Andersen96700832000-09-04 15:15:55 +0000204 */
Eric Andersen79757c92001-04-05 21:45:54 +0000205 proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
206 if (proxy)
207 parse_url(xstrdup(proxy), &server);
Eric Andersen29edd002000-12-09 16:55:35 +0000208
209 /* Guess an output filename */
210 if (!fname_out) {
211 fname_out =
Eric Andersen370fb082001-01-20 20:07:00 +0000212#ifdef BB_FEATURE_WGET_STATUSBAR
Eric Andersen29edd002000-12-09 16:55:35 +0000213 curfile =
214#endif
Eric Andersen79757c92001-04-05 21:45:54 +0000215 get_last_path_component(target.path);
Eric Andersen29edd002000-12-09 16:55:35 +0000216 if (fname_out==NULL || strlen(fname_out)<1) {
217 fname_out =
Eric Andersen370fb082001-01-20 20:07:00 +0000218#ifdef BB_FEATURE_WGET_STATUSBAR
Eric Andersen29edd002000-12-09 16:55:35 +0000219 curfile =
220#endif
221 "index.html";
222 }
Eric Andersen370fb082001-01-20 20:07:00 +0000223#ifdef BB_FEATURE_WGET_STATUSBAR
Eric Andersen29edd002000-12-09 16:55:35 +0000224 } else {
Eric Andersen79757c92001-04-05 21:45:54 +0000225 curfile = get_last_path_component(fname_out);
Eric Andersen29edd002000-12-09 16:55:35 +0000226#endif
227 }
Eric Andersen7d697012001-01-24 20:28:35 +0000228 if (do_continue && !fname_out)
Matt Kraaidd19c692001-01-31 19:00:21 +0000229 error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
Eric Andersen29edd002000-12-09 16:55:35 +0000230
Eric Andersen96700832000-09-04 15:15:55 +0000231
232 /*
Eric Andersen29edd002000-12-09 16:55:35 +0000233 * Open the output file stream.
Eric Andersen96700832000-09-04 15:15:55 +0000234 */
Matt Kraai65317ea2001-04-11 20:03:01 +0000235 if (strcmp(fname_out, "-") == 0) {
Randolph Chung02553a22000-12-07 03:53:47 +0000236 output = stdout;
Matt Kraai65317ea2001-04-11 20:03:01 +0000237 } else {
238 output = xfopen(fname_out, (do_continue ? "a" : "w"));
Eric Andersen96700832000-09-04 15:15:55 +0000239 }
240
241 /*
242 * Determine where to start transfer.
243 */
244 if (do_continue) {
Eric Andersenb520e082000-10-03 00:21:45 +0000245 if (fstat(fileno(output), &sbuf) < 0)
Matt Kraai0dab8292000-12-18 03:08:29 +0000246 perror_msg_and_die("fstat()");
Eric Andersen96700832000-09-04 15:15:55 +0000247 if (sbuf.st_size > 0)
248 beg_range = sbuf.st_size;
249 else
250 do_continue = 0;
251 }
252
Eric Andersen79757c92001-04-05 21:45:54 +0000253 if (proxy || !target.is_ftp) {
254 /*
255 * HTTP session
256 */
257 do {
258 if (! --try)
259 close_delete_and_die("too many redirections");
Eric Andersen7d697012001-01-24 20:28:35 +0000260
Eric Andersen79757c92001-04-05 21:45:54 +0000261 /*
262 * Open socket to http server
263 */
264 if (sfp) fclose(sfp);
265 sfp = open_socket(server.host, server.port);
266
267 /*
268 * Send HTTP request.
269 */
270 if (proxy) {
Eric Andersen6d7fa432001-04-10 18:17:05 +0000271 fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.1\r\n",
Eric Andersen79757c92001-04-05 21:45:54 +0000272 target.is_ftp ? "f" : "ht", target.host,
273 target.port, target.path);
274 } else {
Eric Andersen6d7fa432001-04-10 18:17:05 +0000275 fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
Eric Andersen79757c92001-04-05 21:45:54 +0000276 }
Eric Andersen96700832000-09-04 15:15:55 +0000277
Eric Andersen79757c92001-04-05 21:45:54 +0000278 fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
279
280#ifdef BB_FEATURE_WGET_AUTHENTICATION
281 if (target.user) {
282 fprintf(sfp, "Authorization: Basic %s\r\n",
283 base64enc(target.user, buf, sizeof(buf)));
284 }
285 if (proxy && server.user) {
286 fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
287 base64enc(server.user, buf, sizeof(buf)));
288 }
289#endif
290
Eric Andersenb520e082000-10-03 00:21:45 +0000291 if (do_continue)
Eric Andersen79757c92001-04-05 21:45:54 +0000292 fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
293 fprintf(sfp,"Connection: close\r\n\r\n");
294
295 /*
296 * Retrieve HTTP response line and check for "200" status code.
297 */
Eric Andersen6d7fa432001-04-10 18:17:05 +0000298read_response: if (fgets(buf, sizeof(buf), sfp) == NULL)
Eric Andersen79757c92001-04-05 21:45:54 +0000299 close_delete_and_die("no response from server");
300
301 for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
302 ;
303 for ( ; isspace(*s) ; ++s)
304 ;
305 switch (status = atoi(s)) {
306 case 0:
Eric Andersen6d7fa432001-04-10 18:17:05 +0000307 case 100:
308 while (gethdr(buf, sizeof(buf), sfp, &n) != NULL);
309 goto read_response;
Eric Andersen79757c92001-04-05 21:45:54 +0000310 case 200:
311 if (do_continue && output != stdout)
312 output = freopen(fname_out, "w", output);
313 do_continue = 0;
314 break;
315 case 300: /* redirection */
316 case 301:
317 case 302:
318 case 303:
319 break;
320 case 206:
321 if (do_continue)
322 break;
323 /*FALLTHRU*/
324 default:
325 chomp(buf);
326 close_delete_and_die("server returned error %d: %s", atoi(s), buf);
327 }
328
329 /*
330 * Retrieve HTTP headers.
331 */
332 while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
333 if (strcasecmp(buf, "content-length") == 0) {
334 filesize = atol(s);
335 got_clen = 1;
336 continue;
337 }
Eric Andersen6d7fa432001-04-10 18:17:05 +0000338 if (strcasecmp(buf, "transfer-encoding") == 0) {
339 if (strcasecmp(s, "chunked") == 0) {
340 chunked = got_clen = 1;
341 } else {
Eric Andersen79757c92001-04-05 21:45:54 +0000342 close_delete_and_die("server wants to do %s transfer encoding", s);
Eric Andersen6d7fa432001-04-10 18:17:05 +0000343 }
344 }
Eric Andersen79757c92001-04-05 21:45:54 +0000345 if (strcasecmp(buf, "location") == 0) {
346 if (s[0] == '/')
347 target.path = xstrdup(s+1);
348 else {
349 parse_url(xstrdup(s), &target);
350 if (!proxy) {
351 server.host = target.host;
352 server.port = target.port;
353 }
354 }
355 }
356 }
357 } while(status >= 300);
358
359 dfp = sfp;
360 }
361 else
362 {
363 /*
364 * FTP session
365 */
366 if (! target.user)
367 target.user = xstrdup("anonymous:busybox@");
368
369 sfp = open_socket(server.host, server.port);
370 if (ftpcmd(NULL, NULL, sfp, buf) != 220)
371 close_delete_and_die("%s", buf+4);
372
373 /*
374 * Splitting username:password pair,
375 * trying to log in
376 */
377 s = strchr(target.user, ':');
378 if (s)
379 *(s++) = '\0';
380 switch(ftpcmd("USER ", target.user, sfp, buf)) {
381 case 230:
Eric Andersenb520e082000-10-03 00:21:45 +0000382 break;
Eric Andersen79757c92001-04-05 21:45:54 +0000383 case 331:
384 if (ftpcmd("PASS ", s, sfp, buf) == 230)
385 break;
386 /* FALLTHRU (failed login) */
387 default:
388 close_delete_and_die("ftp login: %s", buf+4);
389 }
390
391 ftpcmd("CDUP", NULL, sfp, buf);
392 ftpcmd("TYPE I", NULL, sfp, buf);
393
394 /*
395 * Querying file size
396 */
397 if (ftpcmd("SIZE /", target.path, sfp, buf) == 213) {
398 filesize = atol(buf+4);
Eric Andersen96700832000-09-04 15:15:55 +0000399 got_clen = 1;
Eric Andersen96700832000-09-04 15:15:55 +0000400 }
Eric Andersen79757c92001-04-05 21:45:54 +0000401
402 /*
403 * Entering passive mode
404 */
405 if (ftpcmd("PASV", NULL, sfp, buf) != 227)
406 close_delete_and_die("PASV: %s", buf+4);
407 s = strrchr(buf, ',');
408 *s = 0;
409 port = atoi(s+1);
410 s = strrchr(buf, ',');
411 port += atoi(s+1) * 256;
412 dfp = open_socket(server.host, port);
413
414 if (do_continue) {
415 sprintf(buf, "REST %ld", beg_range);
416 if (ftpcmd(buf, NULL, sfp, buf) != 350) {
417 if (output != stdout)
418 output = freopen(fname_out, "w", output);
419 do_continue = 0;
420 } else
421 filesize -= beg_range;
Eric Andersen96700832000-09-04 15:15:55 +0000422 }
Eric Andersen79757c92001-04-05 21:45:54 +0000423
424 if (ftpcmd("RETR /", target.path, sfp, buf) > 150)
425 close_delete_and_die("RETR: %s", buf+4);
426
Eric Andersen96700832000-09-04 15:15:55 +0000427 }
428
Eric Andersen79757c92001-04-05 21:45:54 +0000429
Eric Andersen96700832000-09-04 15:15:55 +0000430 /*
Eric Andersen79757c92001-04-05 21:45:54 +0000431 * Retrieve file
Eric Andersen96700832000-09-04 15:15:55 +0000432 */
Eric Andersen6d7fa432001-04-10 18:17:05 +0000433 if (chunked) {
434 fgets(buf, sizeof(buf), dfp);
435 filesize = strtol(buf, (char **) NULL, 16);
436 }
Eric Andersen370fb082001-01-20 20:07:00 +0000437#ifdef BB_FEATURE_WGET_STATUSBAR
Glenn L McGrath1bca5ed2000-12-09 08:12:06 +0000438 if (quiet_flag==FALSE)
439 progressmeter(-1);
Eric Andersenb520e082000-10-03 00:21:45 +0000440#endif
Mark Whitley30ac01c2001-04-17 18:13:16 +0000441 do {
Matt Kraai854125f2001-05-09 19:15:46 +0000442 while ((filesize > 0 || !got_clen) && (n = safe_fread(buf, 1, chunked ? (filesize > sizeof(buf) ? sizeof(buf) : filesize) : sizeof(buf), dfp)) > 0) {
443 safe_fwrite(buf, 1, n, output);
Eric Andersen370fb082001-01-20 20:07:00 +0000444#ifdef BB_FEATURE_WGET_STATUSBAR
Eric Andersenb520e082000-10-03 00:21:45 +0000445 statbytes+=n;
Eric Andersenb520e082000-10-03 00:21:45 +0000446#endif
Eric Andersen96700832000-09-04 15:15:55 +0000447 if (got_clen)
Eric Andersenb520e082000-10-03 00:21:45 +0000448 filesize -= n;
Eric Andersen96700832000-09-04 15:15:55 +0000449 }
Eric Andersen79757c92001-04-05 21:45:54 +0000450
Eric Andersen6d7fa432001-04-10 18:17:05 +0000451 if (chunked) {
Matt Kraai854125f2001-05-09 19:15:46 +0000452 safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
453 safe_fgets(buf, sizeof(buf), dfp);
Eric Andersen6d7fa432001-04-10 18:17:05 +0000454 filesize = strtol(buf, (char **) NULL, 16);
455 if (filesize==0) chunked = 0; /* all done! */
456 }
457
Eric Andersen79757c92001-04-05 21:45:54 +0000458 if (n == 0 && ferror(dfp))
Mark Whitleyf57c9442000-12-07 19:56:48 +0000459 perror_msg_and_die("network read error");
Eric Andersen6d7fa432001-04-10 18:17:05 +0000460 } while (chunked);
Mark Whitley30ac01c2001-04-17 18:13:16 +0000461#ifdef BB_FEATURE_WGET_STATUSBAR
462 if (quiet_flag==FALSE)
463 progressmeter(1);
464#endif
Eric Andersen79757c92001-04-05 21:45:54 +0000465 if (!proxy && target.is_ftp) {
466 fclose(dfp);
467 if (ftpcmd(NULL, NULL, sfp, buf) != 226)
468 error_msg_and_die("ftp error: %s", buf+4);
469 ftpcmd("QUIT", NULL, sfp, buf);
470 }
Eric Andersen79757c92001-04-05 21:45:54 +0000471 exit(EXIT_SUCCESS);
Eric Andersen96700832000-09-04 15:15:55 +0000472}
473
474
Eric Andersen79757c92001-04-05 21:45:54 +0000475void parse_url(char *url, struct host_info *h)
Eric Andersen96700832000-09-04 15:15:55 +0000476{
Eric Andersen79757c92001-04-05 21:45:54 +0000477 char *cp, *sp, *up;
Eric Andersen96700832000-09-04 15:15:55 +0000478
Eric Andersen79757c92001-04-05 21:45:54 +0000479 if (strncmp(url, "http://", 7) == 0) {
480 h->port = 80;
481 h->host = url + 7;
482 h->is_ftp = 0;
483 } else if (strncmp(url, "ftp://", 6) == 0) {
484 h->port = 21;
485 h->host = url + 6;
486 h->is_ftp = 1;
487 } else
488 error_msg_and_die("not an http or ftp url: %s", url);
Eric Andersen96700832000-09-04 15:15:55 +0000489
Eric Andersen79757c92001-04-05 21:45:54 +0000490 sp = strchr(h->host, '/');
Matt Kraaia9711a52001-01-03 16:15:15 +0000491 if (sp != NULL) {
492 *sp++ = '\0';
Eric Andersen79757c92001-04-05 21:45:54 +0000493 h->path = sp;
Matt Kraaia9711a52001-01-03 16:15:15 +0000494 } else
Eric Andersen79757c92001-04-05 21:45:54 +0000495 h->path = "";
496
497 up = strrchr(h->host, '@');
498 if (up != NULL) {
499 h->user = h->host;
500 *up++ = '\0';
501 h->host = up;
502 } else
503 h->user = NULL;
504
505 cp = strchr(h->host, ':');
506 if (cp != NULL) {
507 *cp++ = '\0';
508 h->port = atoi(cp);
509 }
510
Eric Andersen96700832000-09-04 15:15:55 +0000511}
512
513
514FILE *open_socket(char *host, int port)
515{
Eric Andersen1ca20a72001-03-21 07:34:27 +0000516 struct sockaddr_in s_in;
Eric Andersen96700832000-09-04 15:15:55 +0000517 struct hostent *hp;
518 int fd;
519 FILE *fp;
520
Eric Andersen1ca20a72001-03-21 07:34:27 +0000521 memset(&s_in, 0, sizeof(s_in));
522 s_in.sin_family = AF_INET;
Eric Andersen96700832000-09-04 15:15:55 +0000523 if ((hp = (struct hostent *) gethostbyname(host)) == NULL)
Matt Kraaidd19c692001-01-31 19:00:21 +0000524 error_msg_and_die("cannot resolve %s", host);
Eric Andersen1ca20a72001-03-21 07:34:27 +0000525 memcpy(&s_in.sin_addr, hp->h_addr_list[0], hp->h_length);
526 s_in.sin_port = htons(port);
Eric Andersen96700832000-09-04 15:15:55 +0000527
528 /*
529 * Get the server onto a stdio stream.
530 */
531 if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
Mark Whitleyf57c9442000-12-07 19:56:48 +0000532 perror_msg_and_die("socket()");
Eric Andersen1ca20a72001-03-21 07:34:27 +0000533 if (connect(fd, (struct sockaddr *) &s_in, sizeof(s_in)) < 0)
Mark Whitleyf57c9442000-12-07 19:56:48 +0000534 perror_msg_and_die("connect(%s)", host);
Eric Andersen96700832000-09-04 15:15:55 +0000535 if ((fp = fdopen(fd, "r+")) == NULL)
Mark Whitleyf57c9442000-12-07 19:56:48 +0000536 perror_msg_and_die("fdopen()");
Eric Andersen96700832000-09-04 15:15:55 +0000537
538 return fp;
539}
540
541
542char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc)
543{
544 char *s, *hdrval;
545 int c;
546
547 *istrunc = 0;
548
549 /* retrieve header line */
550 if (fgets(buf, bufsiz, fp) == NULL)
551 return NULL;
552
553 /* see if we are at the end of the headers */
554 for (s = buf ; *s == '\r' ; ++s)
555 ;
556 if (s[0] == '\n')
557 return NULL;
558
559 /* convert the header name to lower case */
560 for (s = buf ; isalnum(*s) || *s == '-' ; ++s)
561 *s = tolower(*s);
562
563 /* verify we are at the end of the header name */
564 if (*s != ':')
Matt Kraaidd19c692001-01-31 19:00:21 +0000565 error_msg_and_die("bad header line: %s", buf);
Eric Andersen96700832000-09-04 15:15:55 +0000566
567 /* locate the start of the header value */
568 for (*s++ = '\0' ; *s == ' ' || *s == '\t' ; ++s)
569 ;
570 hdrval = s;
571
572 /* locate the end of header */
573 while (*s != '\0' && *s != '\r' && *s != '\n')
574 ++s;
575
576 /* end of header found */
577 if (*s != '\0') {
578 *s = '\0';
579 return hdrval;
580 }
581
Eric Andersen5d638842000-09-14 21:46:30 +0000582 /* Rats! The buffer isn't big enough to hold the entire header value. */
Eric Andersen96700832000-09-04 15:15:55 +0000583 while (c = getc(fp), c != EOF && c != '\n')
584 ;
585 *istrunc = 1;
586 return hdrval;
587}
588
Eric Andersen79757c92001-04-05 21:45:54 +0000589static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf)
590{
591 char *p;
592
593 if (s1) {
594 if (!s2) s2="";
595 fprintf(fp, "%s%s\n", s1, s2);
596 fflush(fp);
597 }
598
599 do {
600 p = fgets(buf, 510, fp);
601 if (!p)
602 perror_msg_and_die("fgets()");
603 } while (! isdigit(buf[0]) || buf[3] != ' ');
604
605 return atoi(buf);
606}
607
Eric Andersen370fb082001-01-20 20:07:00 +0000608#ifdef BB_FEATURE_WGET_STATUSBAR
Eric Andersen4e573f42000-11-14 23:29:24 +0000609/* Stuff below is from BSD rcp util.c, as added to openshh.
610 * Original copyright notice is retained at the end of this file.
611 *
612 */
Eric Andersenb520e082000-10-03 00:21:45 +0000613
614
Eric Andersen3e6ff902001-03-09 21:24:12 +0000615static int
Eric Andersenb520e082000-10-03 00:21:45 +0000616getttywidth(void)
617{
618 struct winsize winsize;
619
620 if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
621 return (winsize.ws_col ? winsize.ws_col : 80);
622 else
623 return (80);
624}
625
Eric Andersen3e6ff902001-03-09 21:24:12 +0000626static void
Eric Andersenb520e082000-10-03 00:21:45 +0000627updateprogressmeter(int ignore)
628{
629 int save_errno = errno;
630
631 progressmeter(0);
632 errno = save_errno;
633}
634
Eric Andersen3e6ff902001-03-09 21:24:12 +0000635static void
Eric Andersenb520e082000-10-03 00:21:45 +0000636alarmtimer(int wait)
637{
638 struct itimerval itv;
639
640 itv.it_value.tv_sec = wait;
641 itv.it_value.tv_usec = 0;
642 itv.it_interval = itv.it_value;
643 setitimer(ITIMER_REAL, &itv, NULL);
644}
645
646
Eric Andersen3e6ff902001-03-09 21:24:12 +0000647static void
Eric Andersenb520e082000-10-03 00:21:45 +0000648progressmeter(int flag)
649{
650 static const char prefixes[] = " KMGTP";
651 static struct timeval lastupdate;
Mark Whitley30ac01c2001-04-17 18:13:16 +0000652 static off_t lastsize, totalsize;
Eric Andersenb520e082000-10-03 00:21:45 +0000653 struct timeval now, td, wait;
654 off_t cursize, abbrevsize;
655 double elapsed;
656 int ratio, barlength, i, remaining;
657 char buf[256];
658
659 if (flag == -1) {
660 (void) gettimeofday(&start, (struct timezone *) 0);
661 lastupdate = start;
662 lastsize = 0;
Mark Whitley30ac01c2001-04-17 18:13:16 +0000663 totalsize = filesize; /* as filesize changes.. */
Eric Andersenb520e082000-10-03 00:21:45 +0000664 }
665
666 (void) gettimeofday(&now, (struct timezone *) 0);
667 cursize = statbytes;
Mark Whitley30ac01c2001-04-17 18:13:16 +0000668 if (totalsize != 0 && !chunked) {
669 ratio = 100.0 * cursize / totalsize;
Eric Andersenb520e082000-10-03 00:21:45 +0000670 ratio = MAX(ratio, 0);
671 ratio = MIN(ratio, 100);
672 } else
673 ratio = 100;
674
675 snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
676
677 barlength = getttywidth() - 51;
678 if (barlength > 0) {
679 i = barlength * ratio / 100;
680 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
681 "|%.*s%*s|", i,
682 "*****************************************************************************"
683 "*****************************************************************************",
684 barlength - i, "");
685 }
686 i = 0;
687 abbrevsize = cursize;
688 while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
689 i++;
690 abbrevsize >>= 10;
691 }
692 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5d %c%c ",
693 (int) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
694 'B');
695
696 timersub(&now, &lastupdate, &wait);
697 if (cursize > lastsize) {
698 lastupdate = now;
699 lastsize = cursize;
700 if (wait.tv_sec >= STALLTIME) {
701 start.tv_sec += wait.tv_sec;
702 start.tv_usec += wait.tv_usec;
703 }
704 wait.tv_sec = 0;
705 }
706 timersub(&now, &start, &td);
707 elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
708
Mark Whitley30ac01c2001-04-17 18:13:16 +0000709 if (wait.tv_sec >= STALLTIME) {
Eric Andersenb520e082000-10-03 00:21:45 +0000710 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
711 " - stalled -");
Mark Whitley30ac01c2001-04-17 18:13:16 +0000712 } else if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalsize || chunked) {
713 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
714 " --:-- ETA");
Eric Andersenb520e082000-10-03 00:21:45 +0000715 } else {
Mark Whitley30ac01c2001-04-17 18:13:16 +0000716 remaining = (int) (totalsize / (statbytes / elapsed) - elapsed);
Eric Andersenb520e082000-10-03 00:21:45 +0000717 i = remaining / 3600;
718 if (i)
719 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
720 "%2d:", i);
721 else
722 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
723 " ");
724 i = remaining % 3600;
725 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
726 "%02d:%02d ETA", i / 60, i % 60);
727 }
Randolph Chungda7b8292000-12-07 03:55:35 +0000728 write(fileno(stderr), buf, strlen(buf));
Eric Andersenb520e082000-10-03 00:21:45 +0000729
730 if (flag == -1) {
731 struct sigaction sa;
732 sa.sa_handler = updateprogressmeter;
733 sigemptyset(&sa.sa_mask);
734 sa.sa_flags = SA_RESTART;
735 sigaction(SIGALRM, &sa, NULL);
736 alarmtimer(1);
737 } else if (flag == 1) {
738 alarmtimer(0);
739 statbytes = 0;
Mark Whitley30ac01c2001-04-17 18:13:16 +0000740 putc('\n', stderr);
Eric Andersenb520e082000-10-03 00:21:45 +0000741 }
742}
743#endif
Eric Andersen4e573f42000-11-14 23:29:24 +0000744
Eric Andersen370fb082001-01-20 20:07:00 +0000745/* Original copyright notice which applies to the BB_FEATURE_WGET_STATUSBAR stuff,
Eric Andersen4e573f42000-11-14 23:29:24 +0000746 * much of which was blatently stolen from openssh. */
747
748/*-
749 * Copyright (c) 1992, 1993
750 * The Regents of the University of California. All rights reserved.
751 *
752 * Redistribution and use in source and binary forms, with or without
753 * modification, are permitted provided that the following conditions
754 * are met:
755 * 1. Redistributions of source code must retain the above copyright
756 * notice, this list of conditions and the following disclaimer.
757 * 2. Redistributions in binary form must reproduce the above copyright
758 * notice, this list of conditions and the following disclaimer in the
759 * documentation and/or other materials provided with the distribution.
760 *
761 * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
762 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
763 *
764 * 4. Neither the name of the University nor the names of its contributors
765 * may be used to endorse or promote products derived from this software
766 * without specific prior written permission.
767 *
768 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
769 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
770 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
771 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
772 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
773 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
774 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
775 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
776 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
777 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
778 * SUCH DAMAGE.
779 *
Matt Kraai854125f2001-05-09 19:15:46 +0000780 * $Id: wget.c,v 1.37 2001/05/09 19:15:46 kraai Exp $
Eric Andersen4e573f42000-11-14 23:29:24 +0000781 */
782
783
784
Eric Andersen96700832000-09-04 15:15:55 +0000785/*
786Local Variables:
787c-file-style: "linux"
788c-basic-offset: 4
789tab-width: 4
790End:
791*/
Eric Andersenb520e082000-10-03 00:21:45 +0000792
Eric Andersen4e573f42000-11-14 23:29:24 +0000793
794