source: MondoRescue/branches/2.2.2/mindi-busybox/networking/wget.c@ 1247

Last change on this file since 1247 was 821, checked in by Bruno Cornec, 18 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)
File size: 20.3 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * wget - retrieve a file using HTTP or FTP
4 *
5 * Chip Rosenthal Covad Communications <chip@laserlink.net>
6 *
7 */
8
9#include "busybox.h"
10#include <errno.h>
11#include <signal.h>
12#include <sys/ioctl.h>
13#include <getopt.h>
14
15
16struct host_info {
17 char *host;
18 int port;
19 char *path;
20 int is_ftp;
21 char *user;
22};
23
24static void parse_url(char *url, struct host_info *h);
25static FILE *open_socket(struct sockaddr_in *s_in);
26static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
27static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf);
28
29/* Globals (can be accessed from signal handlers */
30static off_t filesize; /* content-length of the file */
31static int chunked; /* chunked transfer encoding */
32#ifdef CONFIG_FEATURE_WGET_STATUSBAR
33static void progressmeter(int flag);
34static char *curfile; /* Name of current file being transferred. */
35static struct timeval start; /* Time a transfer started. */
36static off_t transferred; /* Number of bytes transferred so far. */
37/* For progressmeter() -- number of seconds before xfer considered "stalled" */
38enum {
39 STALLTIME = 5
40};
41#else
42static inline void progressmeter(int flag) {}
43#endif
44
45static void close_and_delete_outfile(FILE* output, char *fname_out, int do_continue)
46{
47 if (output != stdout && do_continue==0) {
48 fclose(output);
49 unlink(fname_out);
50 }
51}
52
53/* Read NMEMB elements of SIZE bytes into PTR from STREAM. Returns the
54 * number of elements read, and a short count if an eof or non-interrupt
55 * error is encountered. */
56static size_t safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream)
57{
58 size_t ret = 0;
59
60 do {
61 clearerr(stream);
62 ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream);
63 } while (ret < nmemb && ferror(stream) && errno == EINTR);
64
65 return ret;
66}
67
68/* Write NMEMB elements of SIZE bytes from PTR to STREAM. Returns the
69 * number of elements written, and a short count if an eof or non-interrupt
70 * error is encountered. */
71static size_t safe_fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream)
72{
73 size_t ret = 0;
74
75 do {
76 clearerr(stream);
77 ret += fwrite((char *)ptr + (ret * size), size, nmemb - ret, stream);
78 } while (ret < nmemb && ferror(stream) && errno == EINTR);
79
80 return ret;
81}
82
83/* Read a line or SIZE - 1 bytes into S, whichever is less, from STREAM.
84 * Returns S, or NULL if an eof or non-interrupt error is encountered. */
85static char *safe_fgets(char *s, int size, FILE *stream)
86{
87 char *ret;
88
89 do {
90 clearerr(stream);
91 ret = fgets(s, size, stream);
92 } while (ret == NULL && ferror(stream) && errno == EINTR);
93
94 return ret;
95}
96
97#define close_delete_and_die(s...) { \
98 close_and_delete_outfile(output, fname_out, do_continue); \
99 bb_error_msg_and_die(s); }
100
101
102#ifdef CONFIG_FEATURE_WGET_AUTHENTICATION
103/*
104 * Base64-encode character string
105 * oops... isn't something similar in uuencode.c?
106 * XXX: It would be better to use already existing code
107 */
108static char *base64enc(unsigned char *p, char *buf, int len) {
109
110 char al[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
111 "0123456789+/";
112 char *s = buf;
113
114 while(*p) {
115 if (s >= buf+len-4)
116 bb_error_msg_and_die("buffer overflow");
117 *(s++) = al[(*p >> 2) & 0x3F];
118 *(s++) = al[((*p << 4) & 0x30) | ((*(p+1) >> 4) & 0x0F)];
119 *s = *(s+1) = '=';
120 *(s+2) = 0;
121 if (! *(++p)) break;
122 *(s++) = al[((*p << 2) & 0x3C) | ((*(p+1) >> 6) & 0x03)];
123 if (! *(++p)) break;
124 *(s++) = al[*(p++) & 0x3F];
125 }
126
127 return buf;
128}
129#endif
130
131#define WGET_OPT_CONTINUE 1
132#define WGET_OPT_QUIET 2
133#define WGET_OPT_PASSIVE 4
134#define WGET_OPT_OUTNAME 8
135#define WGET_OPT_HEADER 16
136#define WGET_OPT_PREFIX 32
137#define WGET_OPT_PROXY 64
138
139#if ENABLE_WGET_LONG_OPTIONS
140static const struct option wget_long_options[] = {
141 { "continue", 0, NULL, 'c' },
142 { "quiet", 0, NULL, 'q' },
143 { "passive-ftp", 0, NULL, 139 },
144 { "output-document", 1, NULL, 'O' },
145 { "header", 1, NULL, 131 },
146 { "directory-prefix",1, NULL, 'P' },
147 { "proxy", 1, NULL, 'Y' },
148 { 0, 0, 0, 0 }
149};
150#endif
151
152int wget_main(int argc, char **argv)
153{
154 int n, try=5, status;
155 unsigned long opt;
156 int port;
157 char *proxy = 0;
158 char *dir_prefix=NULL;
159 char *s, buf[512];
160 struct stat sbuf;
161 char extra_headers[1024];
162 char *extra_headers_ptr = extra_headers;
163 int extra_headers_left = sizeof(extra_headers);
164 struct host_info server, target;
165 struct sockaddr_in s_in;
166 llist_t *headers_llist = NULL;
167
168 FILE *sfp = NULL; /* socket to web/ftp server */
169 FILE *dfp = NULL; /* socket to ftp server (data) */
170 char *fname_out = NULL; /* where to direct output (-O) */
171 int do_continue = 0; /* continue a prev transfer (-c) */
172 long beg_range = 0L; /* range at which continue begins */
173 int got_clen = 0; /* got content-length: from server */
174 FILE *output; /* socket to web server */
175 int quiet_flag = FALSE; /* Be verry, verry quiet... */
176 int use_proxy = 1; /* Use proxies if env vars are set */
177 char *proxy_flag = "on"; /* Use proxies if env vars are set */
178
179 /*
180 * Crack command line.
181 */
182 bb_opt_complementally = "-1:\203::";
183#if ENABLE_WGET_LONG_OPTIONS
184 bb_applet_long_options = wget_long_options;
185#endif
186 opt = bb_getopt_ulflags(argc, argv, "cq\213O:\203:P:Y:",
187 &fname_out, &headers_llist,
188 &dir_prefix, &proxy_flag);
189 if (opt & WGET_OPT_CONTINUE) {
190 ++do_continue;
191 }
192 if (opt & WGET_OPT_QUIET) {
193 quiet_flag = TRUE;
194 }
195 if (strcmp(proxy_flag, "off") == 0) {
196 /* Use the proxy if necessary. */
197 use_proxy = 0;
198 }
199 if (opt & WGET_OPT_HEADER) {
200 while (headers_llist) {
201 int arglen = strlen(headers_llist->data);
202 if (extra_headers_left - arglen - 2 <= 0)
203 bb_error_msg_and_die("extra_headers buffer too small(need %i)", extra_headers_left - arglen);
204 strcpy(extra_headers_ptr, headers_llist->data);
205 extra_headers_ptr += arglen;
206 extra_headers_left -= ( arglen + 2 );
207 *extra_headers_ptr++ = '\r';
208 *extra_headers_ptr++ = '\n';
209 *(extra_headers_ptr + 1) = 0;
210 headers_llist = headers_llist->link;
211 }
212 }
213
214 parse_url(argv[optind], &target);
215 server.host = target.host;
216 server.port = target.port;
217
218 /*
219 * Use the proxy if necessary.
220 */
221 if (use_proxy) {
222 proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
223 if (proxy && *proxy) {
224 parse_url(bb_xstrdup(proxy), &server);
225 } else {
226 use_proxy = 0;
227 }
228 }
229
230 /* Guess an output filename */
231 if (!fname_out) {
232 // Dirty hack. Needed because bb_get_last_path_component
233 // will destroy trailing / by storing '\0' in last byte!
234 if(*target.path && target.path[strlen(target.path)-1]!='/') {
235 fname_out =
236#ifdef CONFIG_FEATURE_WGET_STATUSBAR
237 curfile =
238#endif
239 bb_get_last_path_component(target.path);
240 }
241 if (fname_out==NULL || strlen(fname_out)<1) {
242 fname_out =
243#ifdef CONFIG_FEATURE_WGET_STATUSBAR
244 curfile =
245#endif
246 "index.html";
247 }
248 if (dir_prefix != NULL)
249 fname_out = concat_path_file(dir_prefix, fname_out);
250#ifdef CONFIG_FEATURE_WGET_STATUSBAR
251 } else {
252 curfile = bb_get_last_path_component(fname_out);
253#endif
254 }
255 if (do_continue && !fname_out)
256 bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
257
258
259 /*
260 * Open the output file stream.
261 */
262 if (strcmp(fname_out, "-") == 0) {
263 output = stdout;
264 quiet_flag = TRUE;
265 } else {
266 output = bb_xfopen(fname_out, (do_continue ? "a" : "w"));
267 }
268
269 /*
270 * Determine where to start transfer.
271 */
272 if (do_continue) {
273 if (fstat(fileno(output), &sbuf) < 0)
274 bb_perror_msg_and_die("fstat()");
275 if (sbuf.st_size > 0)
276 beg_range = sbuf.st_size;
277 else
278 do_continue = 0;
279 }
280
281 /* We want to do exactly _one_ DNS lookup, since some
282 * sites (i.e. ftp.us.debian.org) use round-robin DNS
283 * and we want to connect to only one IP... */
284 bb_lookup_host(&s_in, server.host);
285 s_in.sin_port = server.port;
286 if (quiet_flag==FALSE) {
287 fprintf(stdout, "Connecting to %s[%s]:%d\n",
288 server.host, inet_ntoa(s_in.sin_addr), ntohs(server.port));
289 }
290
291 if (use_proxy || !target.is_ftp) {
292 /*
293 * HTTP session
294 */
295 do {
296 got_clen = chunked = 0;
297
298 if (! --try)
299 close_delete_and_die("too many redirections");
300
301 /*
302 * Open socket to http server
303 */
304 if (sfp) fclose(sfp);
305 sfp = open_socket(&s_in);
306
307 /*
308 * Send HTTP request.
309 */
310 if (use_proxy) {
311 const char *format = "GET %stp://%s:%d/%s HTTP/1.1\r\n";
312#ifdef CONFIG_FEATURE_WGET_IP6_LITERAL
313 if (strchr(target.host, ':'))
314 format = "GET %stp://[%s]:%d/%s HTTP/1.1\r\n";
315#endif
316 fprintf(sfp, format,
317 target.is_ftp ? "f" : "ht", target.host,
318 ntohs(target.port), target.path);
319 } else {
320 fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
321 }
322
323 fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
324
325#ifdef CONFIG_FEATURE_WGET_AUTHENTICATION
326 if (target.user) {
327 fprintf(sfp, "Authorization: Basic %s\r\n",
328 base64enc((unsigned char*)target.user, buf, sizeof(buf)));
329 }
330 if (use_proxy && server.user) {
331 fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
332 base64enc((unsigned char*)server.user, buf, sizeof(buf)));
333 }
334#endif
335
336 if (do_continue)
337 fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
338 if(extra_headers_left < sizeof(extra_headers))
339 fputs(extra_headers,sfp);
340 fprintf(sfp,"Connection: close\r\n\r\n");
341
342 /*
343 * Retrieve HTTP response line and check for "200" status code.
344 */
345read_response:
346 if (fgets(buf, sizeof(buf), sfp) == NULL)
347 close_delete_and_die("no response from server");
348
349 for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
350 ;
351 for ( ; isspace(*s) ; ++s)
352 ;
353 switch (status = atoi(s)) {
354 case 0:
355 case 100:
356 while (gethdr(buf, sizeof(buf), sfp, &n) != NULL);
357 goto read_response;
358 case 200:
359 if (do_continue && output != stdout)
360 output = freopen(fname_out, "w", output);
361 do_continue = 0;
362 break;
363 case 300: /* redirection */
364 case 301:
365 case 302:
366 case 303:
367 break;
368 case 206:
369 if (do_continue)
370 break;
371 /*FALLTHRU*/
372 default:
373 chomp(buf);
374 close_delete_and_die("server returned error %d: %s", atoi(s), buf);
375 }
376
377 /*
378 * Retrieve HTTP headers.
379 */
380 while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
381 if (strcasecmp(buf, "content-length") == 0) {
382 unsigned long value;
383 if (safe_strtoul(s, &value)) {
384 close_delete_and_die("content-length %s is garbage", s);
385 }
386 filesize = value;
387 got_clen = 1;
388 continue;
389 }
390 if (strcasecmp(buf, "transfer-encoding") == 0) {
391 if (strcasecmp(s, "chunked") == 0) {
392 chunked = got_clen = 1;
393 } else {
394 close_delete_and_die("server wants to do %s transfer encoding", s);
395 }
396 }
397 if (strcasecmp(buf, "location") == 0) {
398 if (s[0] == '/')
399 target.path = bb_xstrdup(s+1);
400 else {
401 parse_url(bb_xstrdup(s), &target);
402 if (use_proxy == 0) {
403 server.host = target.host;
404 server.port = target.port;
405 }
406 bb_lookup_host(&s_in, server.host);
407 s_in.sin_port = server.port;
408 break;
409 }
410 }
411 }
412 } while(status >= 300);
413
414 dfp = sfp;
415 }
416 else
417 {
418 /*
419 * FTP session
420 */
421 if (! target.user)
422 target.user = bb_xstrdup("anonymous:busybox@");
423
424 sfp = open_socket(&s_in);
425 if (ftpcmd(NULL, NULL, sfp, buf) != 220)
426 close_delete_and_die("%s", buf+4);
427
428 /*
429 * Splitting username:password pair,
430 * trying to log in
431 */
432 s = strchr(target.user, ':');
433 if (s)
434 *(s++) = '\0';
435 switch(ftpcmd("USER ", target.user, sfp, buf)) {
436 case 230:
437 break;
438 case 331:
439 if (ftpcmd("PASS ", s, sfp, buf) == 230)
440 break;
441 /* FALLTHRU (failed login) */
442 default:
443 close_delete_and_die("ftp login: %s", buf+4);
444 }
445
446 ftpcmd("TYPE I", NULL, sfp, buf);
447
448 /*
449 * Querying file size
450 */
451 if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) {
452 unsigned long value;
453 if (safe_strtoul(buf+4, &value)) {
454 close_delete_and_die("SIZE value is garbage");
455 }
456 filesize = value;
457 got_clen = 1;
458 }
459
460 /*
461 * Entering passive mode
462 */
463 if (ftpcmd("PASV", NULL, sfp, buf) != 227)
464 close_delete_and_die("PASV: %s", buf+4);
465 s = strrchr(buf, ',');
466 *s = 0;
467 port = atoi(s+1);
468 s = strrchr(buf, ',');
469 port += atoi(s+1) * 256;
470 s_in.sin_port = htons(port);
471 dfp = open_socket(&s_in);
472
473 if (do_continue) {
474 sprintf(buf, "REST %ld", beg_range);
475 if (ftpcmd(buf, NULL, sfp, buf) != 350) {
476 if (output != stdout)
477 output = freopen(fname_out, "w", output);
478 do_continue = 0;
479 } else
480 filesize -= beg_range;
481 }
482
483 if (ftpcmd("RETR ", target.path, sfp, buf) > 150)
484 close_delete_and_die("RETR: %s", buf+4);
485 }
486
487
488 /*
489 * Retrieve file
490 */
491 if (chunked) {
492 fgets(buf, sizeof(buf), dfp);
493 filesize = strtol(buf, (char **) NULL, 16);
494 }
495
496 if (quiet_flag==FALSE)
497 progressmeter(-1);
498
499 do {
500 while ((filesize > 0 || !got_clen) && (n = safe_fread(buf, 1, ((chunked || got_clen) && (filesize < sizeof(buf)) ? filesize : sizeof(buf)), dfp)) > 0) {
501 if (safe_fwrite(buf, 1, n, output) != n) {
502 bb_perror_msg_and_die(bb_msg_write_error);
503 }
504#ifdef CONFIG_FEATURE_WGET_STATUSBAR
505 transferred += n;
506#endif
507 if (got_clen) {
508 filesize -= n;
509 }
510 }
511
512 if (chunked) {
513 safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
514 safe_fgets(buf, sizeof(buf), dfp);
515 filesize = strtol(buf, (char **) NULL, 16);
516 if (filesize==0) {
517 chunked = 0; /* all done! */
518 }
519 }
520
521 if (n == 0 && ferror(dfp)) {
522 bb_perror_msg_and_die(bb_msg_read_error);
523 }
524 } while (chunked);
525
526 if (quiet_flag==FALSE)
527 progressmeter(1);
528
529 if ((use_proxy == 0) && target.is_ftp) {
530 fclose(dfp);
531 if (ftpcmd(NULL, NULL, sfp, buf) != 226)
532 bb_error_msg_and_die("ftp error: %s", buf+4);
533 ftpcmd("QUIT", NULL, sfp, buf);
534 }
535 exit(EXIT_SUCCESS);
536}
537
538
539void parse_url(char *url, struct host_info *h)
540{
541 char *cp, *sp, *up, *pp;
542
543 if (strncmp(url, "http://", 7) == 0) {
544 h->port = bb_lookup_port("http", "tcp", 80);
545 h->host = url + 7;
546 h->is_ftp = 0;
547 } else if (strncmp(url, "ftp://", 6) == 0) {
548 h->port = bb_lookup_port("ftp", "tfp", 21);
549 h->host = url + 6;
550 h->is_ftp = 1;
551 } else
552 bb_error_msg_and_die("not an http or ftp url: %s", url);
553
554 sp = strchr(h->host, '/');
555 if (sp) {
556 *sp++ = '\0';
557 h->path = sp;
558 } else
559 h->path = bb_xstrdup("");
560
561 up = strrchr(h->host, '@');
562 if (up != NULL) {
563 h->user = h->host;
564 *up++ = '\0';
565 h->host = up;
566 } else
567 h->user = NULL;
568
569 pp = h->host;
570
571#ifdef CONFIG_FEATURE_WGET_IP6_LITERAL
572 if (h->host[0] == '[') {
573 char *ep;
574
575 ep = h->host + 1;
576 while (*ep == ':' || isxdigit (*ep))
577 ep++;
578 if (*ep == ']') {
579 h->host++;
580 *ep = '\0';
581 pp = ep + 1;
582 }
583 }
584#endif
585
586 cp = strchr(pp, ':');
587 if (cp != NULL) {
588 *cp++ = '\0';
589 h->port = htons(atoi(cp));
590 }
591}
592
593
594FILE *open_socket(struct sockaddr_in *s_in)
595{
596 FILE *fp;
597
598 fp = fdopen(xconnect(s_in), "r+");
599 if (fp == NULL)
600 bb_perror_msg_and_die("fdopen()");
601
602 return fp;
603}
604
605
606char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc)
607{
608 char *s, *hdrval;
609 int c;
610
611 *istrunc = 0;
612
613 /* retrieve header line */
614 if (fgets(buf, bufsiz, fp) == NULL)
615 return NULL;
616
617 /* see if we are at the end of the headers */
618 for (s = buf ; *s == '\r' ; ++s)
619 ;
620 if (s[0] == '\n')
621 return NULL;
622
623 /* convert the header name to lower case */
624 for (s = buf ; isalnum(*s) || *s == '-' ; ++s)
625 *s = tolower(*s);
626
627 /* verify we are at the end of the header name */
628 if (*s != ':')
629 bb_error_msg_and_die("bad header line: %s", buf);
630
631 /* locate the start of the header value */
632 for (*s++ = '\0' ; *s == ' ' || *s == '\t' ; ++s)
633 ;
634 hdrval = s;
635
636 /* locate the end of header */
637 while (*s != '\0' && *s != '\r' && *s != '\n')
638 ++s;
639
640 /* end of header found */
641 if (*s != '\0') {
642 *s = '\0';
643 return hdrval;
644 }
645
646 /* Rats! The buffer isn't big enough to hold the entire header value. */
647 while (c = getc(fp), c != EOF && c != '\n')
648 ;
649 *istrunc = 1;
650 return hdrval;
651}
652
653static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf)
654{
655 if (s1) {
656 if (!s2) s2="";
657 fprintf(fp, "%s%s\r\n", s1, s2);
658 fflush(fp);
659 }
660
661 do {
662 char *buf_ptr;
663
664 if (fgets(buf, 510, fp) == NULL) {
665 bb_perror_msg_and_die("fgets()");
666 }
667 buf_ptr = strstr(buf, "\r\n");
668 if (buf_ptr) {
669 *buf_ptr = '\0';
670 }
671 } while (! isdigit(buf[0]) || buf[3] != ' ');
672
673 return atoi(buf);
674}
675
676#ifdef CONFIG_FEATURE_WGET_STATUSBAR
677/* Stuff below is from BSD rcp util.c, as added to openshh.
678 * Original copyright notice is retained at the end of this file.
679 *
680 */
681
682
683static int
684getttywidth(void)
685{
686 int width=0;
687 get_terminal_width_height(0, &width, NULL);
688 return (width);
689}
690
691static void
692updateprogressmeter(int ignore)
693{
694 int save_errno = errno;
695
696 progressmeter(0);
697 errno = save_errno;
698}
699
700static void
701alarmtimer(int wait)
702{
703 struct itimerval itv;
704
705 itv.it_value.tv_sec = wait;
706 itv.it_value.tv_usec = 0;
707 itv.it_interval = itv.it_value;
708 setitimer(ITIMER_REAL, &itv, NULL);
709}
710
711
712static void
713progressmeter(int flag)
714{
715 static struct timeval lastupdate;
716 static off_t lastsize, totalsize;
717
718 struct timeval now, td, wait;
719 off_t abbrevsize;
720 int elapsed, ratio, barlength, i;
721 char buf[256];
722
723 if (flag == -1) {
724 (void) gettimeofday(&start, (struct timezone *) 0);
725 lastupdate = start;
726 lastsize = 0;
727 totalsize = filesize; /* as filesize changes.. */
728 }
729
730 (void) gettimeofday(&now, (struct timezone *) 0);
731 ratio = 100;
732 if (totalsize != 0 && !chunked) {
733 ratio = (int) (100 * transferred / totalsize);
734 ratio = MIN(ratio, 100);
735 }
736
737 fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
738
739 barlength = getttywidth() - 51;
740 if (barlength > 0 && barlength < sizeof(buf)) {
741 i = barlength * ratio / 100;
742 memset(buf, '*', i);
743 memset(buf + i, ' ', barlength - i);
744 buf[barlength] = '\0';
745 fprintf(stderr, "|%s|", buf);
746 }
747 i = 0;
748 abbrevsize = transferred;
749 while (abbrevsize >= 100000) {
750 i++;
751 abbrevsize >>= 10;
752 }
753 /* See http://en.wikipedia.org/wiki/Tera */
754 fprintf(stderr, "%6d %c%c ", (int)abbrevsize, " KMGTPEZY"[i], i?'B':' ');
755
756 timersub(&now, &lastupdate, &wait);
757 if (transferred > lastsize) {
758 lastupdate = now;
759 lastsize = transferred;
760 if (wait.tv_sec >= STALLTIME)
761 timeradd(&start, &wait, &start);
762 wait.tv_sec = 0;
763 }
764 timersub(&now, &start, &td);
765 elapsed = td.tv_sec;
766
767 if (wait.tv_sec >= STALLTIME) {
768 fprintf(stderr, " - stalled -");
769 } else if (transferred <= 0 || elapsed <= 0 || transferred > totalsize || chunked) {
770 fprintf(stderr, "--:--:-- ETA");
771 } else {
772 /* totalsize / (transferred/elapsed) - elapsed: */
773 int eta = (int) (totalsize*elapsed/transferred - elapsed);
774 i = eta % 3600;
775 fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
776 }
777
778 if (flag == -1) {
779 struct sigaction sa;
780 sa.sa_handler = updateprogressmeter;
781 sigemptyset(&sa.sa_mask);
782 sa.sa_flags = SA_RESTART;
783 sigaction(SIGALRM, &sa, NULL);
784 alarmtimer(1);
785 } else if (flag == 1) {
786 alarmtimer(0);
787 transferred = 0;
788 putc('\n', stderr);
789 }
790}
791#endif
792
793/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
794 * much of which was blatantly stolen from openssh. */
795
796/*-
797 * Copyright (c) 1992, 1993
798 * The Regents of the University of California. All rights reserved.
799 *
800 * Redistribution and use in source and binary forms, with or without
801 * modification, are permitted provided that the following conditions
802 * are met:
803 * 1. Redistributions of source code must retain the above copyright
804 * notice, this list of conditions and the following disclaimer.
805 * 2. Redistributions in binary form must reproduce the above copyright
806 * notice, this list of conditions and the following disclaimer in the
807 * documentation and/or other materials provided with the distribution.
808 *
809 * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
810 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
811 *
812 * 4. Neither the name of the University nor the names of its contributors
813 * may be used to endorse or promote products derived from this software
814 * without specific prior written permission.
815 *
816 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
817 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
818 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
819 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
820 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
821 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
822 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
823 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
824 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
825 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
826 * SUCH DAMAGE.
827 *
828 * $Id: wget.c,v 1.75 2004/10/08 08:27:40 andersen Exp $
829 */
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