*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
*
- * Note: According to RFC2616 section 3.6.1, "All HTTP/1.1 applications MUST be
- * able to receive and decode the "chunked" transfer-coding, and MUST ignore
- * chunk-extension extensions they do not understand."
- *
- * This prevents this particular wget app from completely RFC compliant, and as
- * such, prevents it from being used as a general purpose web browser... This
- * is a design decision, since it makes the code smaller.
- *
*/
#include <stdio.h>
#include <arpa/inet.h>
#include <netdb.h>
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <getopt.h>
+
#include "busybox.h"
/* Stupid libc5 doesn't define this... */
static FILE *open_socket(char *host, int port);
static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf);
-static void progressmeter(int flag);
/* Globals (can be accessed from signal handlers */
static off_t filesize = 0; /* content-length of the file */
+static int chunked = 0; /* chunked transfer encoding */
#ifdef BB_FEATURE_WGET_STATUSBAR
+static void progressmeter(int flag);
static char *curfile; /* Name of current file being transferred. */
static struct timeval start; /* Time a transfer started. */
-static volatile unsigned long statbytes; /* Number of bytes transferred so far. */
+static volatile unsigned long statbytes = 0; /* Number of bytes transferred so far. */
/* For progressmeter() -- number of seconds before xfer considered "stalled" */
static const int STALLTIME = 5;
#endif
}
}
+/* Read NMEMB elements of SIZE bytes into PTR from STREAM. Returns the
+ * number of elements read, and a short count if an eof or non-interrupt
+ * error is encountered. */
+static size_t safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+ size_t ret = 0;
+
+ do {
+ clearerr(stream);
+ ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream);
+ } while (ret < nmemb && ferror(stream) && errno == EINTR);
+
+ return ret;
+}
+
+/* Write NMEMB elements of SIZE bytes from PTR to STREAM. Returns the
+ * number of elements written, and a short count if an eof or non-interrupt
+ * error is encountered. */
+static size_t safe_fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+ size_t ret = 0;
+
+ do {
+ clearerr(stream);
+ ret += fwrite((char *)ptr + (ret * size), size, nmemb - ret, stream);
+ } while (ret < nmemb && ferror(stream) && errno == EINTR);
+
+ return ret;
+}
+
+/* Read a line or SIZE - 1 bytes into S, whichever is less, from STREAM.
+ * Returns S, or NULL if an eof or non-interrupt error is encountered. */
+static char *safe_fgets(char *s, int size, FILE *stream)
+{
+ char *ret;
+
+ do {
+ clearerr(stream);
+ ret = fgets(s, size, stream);
+ } while (ret == NULL && ferror(stream) && errno == EINTR);
+
+ return ret;
+}
+
#define close_delete_and_die(s...) { \
close_and_delete_outfile(output, fname_out, do_continue); \
error_msg_and_die(s); }
int n, try=5, status;
int port;
char *proxy;
+ char *dir_prefix=NULL;
char *s, buf[512];
struct stat sbuf;
-
+ char extra_headers[1024];
+ char *extra_headers_ptr = extra_headers;
+ int extra_headers_left = sizeof(extra_headers);
+ int which_long_opt = 0, option_index = -1;
struct host_info server, target;
FILE *sfp = NULL; /* socket to web/ftp server */
FILE *output; /* socket to web server */
int quiet_flag = FALSE; /* Be verry, verry quiet... */
+#define LONG_HEADER 1
+ struct option long_options[] = {
+ { "continue", 0, NULL, 'c' },
+ { "quiet", 0, NULL, 'q' },
+ { "output-document", 1, NULL, 'O' },
+ { "header", 1, &which_long_opt, LONG_HEADER },
+ { 0, 0, 0, 0 }
+ };
/*
* Crack command line.
*/
- while ((n = getopt(argc, argv, "cqO:")) != EOF) {
+ while ((n = getopt_long(argc, argv, "cqO:P:", long_options, &option_index)) != EOF) {
switch (n) {
case 'c':
++do_continue;
break;
+ case 'P':
+ dir_prefix = optarg;
+ break;
case 'q':
quiet_flag = TRUE;
break;
* this gets interpreted as the auto-gen output filename
* case below - tausq@debian.org
*/
- fname_out = (strcmp(optarg, "-") == 0 ? (char *)1 : optarg);
+ fname_out = optarg;
+ break;
+ case 0:
+ switch (which_long_opt) {
+ case LONG_HEADER: {
+ int arglen = strlen(optarg);
+ if(extra_headers_left - arglen - 2 <= 0)
+ error_msg_and_die("extra_headers buffer too small(need %i)", extra_headers_left - arglen);
+ strcpy(extra_headers_ptr, optarg);
+ extra_headers_ptr += arglen;
+ extra_headers_left -= ( arglen + 2 );
+ *extra_headers_ptr++ = '\r';
+ *extra_headers_ptr++ = '\n';
+ *(extra_headers_ptr + 1) = 0;
+ break;
+ }
+ }
break;
default:
show_usage();
#endif
"index.html";
}
+ if (dir_prefix != NULL)
+ fname_out = concat_path_file(dir_prefix, fname_out);
#ifdef BB_FEATURE_WGET_STATUSBAR
} else {
curfile = get_last_path_component(fname_out);
/*
* Open the output file stream.
*/
- if (fname_out != (char *)1) {
- output = xfopen( fname_out, (do_continue ? "a" : "w") );
- } else {
+ if (strcmp(fname_out, "-") == 0) {
output = stdout;
+ quiet_flag = TRUE;
+ } else {
+ output = xfopen(fname_out, (do_continue ? "a" : "w"));
}
/*
* Send HTTP request.
*/
if (proxy) {
- fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.0\r\n",
+ fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.1\r\n",
target.is_ftp ? "f" : "ht", target.host,
target.port, target.path);
} else {
- fprintf(sfp, "GET /%s HTTP/1.0\r\n", target.path);
+ fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
}
fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
if (do_continue)
fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
+ if(extra_headers_left < sizeof(extra_headers))
+ fputs(extra_headers,sfp);
fprintf(sfp,"Connection: close\r\n\r\n");
/*
* Retrieve HTTP response line and check for "200" status code.
*/
- if (fgets(buf, sizeof(buf), sfp) == NULL)
+read_response: if (fgets(buf, sizeof(buf), sfp) == NULL)
close_delete_and_die("no response from server");
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
;
switch (status = atoi(s)) {
case 0:
+ case 100:
+ while (gethdr(buf, sizeof(buf), sfp, &n) != NULL);
+ goto read_response;
case 200:
if (do_continue && output != stdout)
output = freopen(fname_out, "w", output);
got_clen = 1;
continue;
}
- if (strcasecmp(buf, "transfer-encoding") == 0)
+ if (strcasecmp(buf, "transfer-encoding") == 0) {
+ if (strcasecmp(s, "chunked") == 0) {
+ chunked = got_clen = 1;
+ } else {
close_delete_and_die("server wants to do %s transfer encoding", s);
-
+ }
+ }
if (strcasecmp(buf, "location") == 0) {
if (s[0] == '/')
target.path = xstrdup(s+1);
/*
* Retrieve file
*/
+ if (chunked) {
+ fgets(buf, sizeof(buf), dfp);
+ filesize = strtol(buf, (char **) NULL, 16);
+ }
#ifdef BB_FEATURE_WGET_STATUSBAR
- statbytes=0;
if (quiet_flag==FALSE)
progressmeter(-1);
#endif
- while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, sizeof(buf), dfp)) > 0) {
- fwrite(buf, 1, n, output);
+ do {
+ while ((filesize > 0 || !got_clen) && (n = safe_fread(buf, 1, chunked ? (filesize > sizeof(buf) ? sizeof(buf) : filesize) : sizeof(buf), dfp)) > 0) {
+ safe_fwrite(buf, 1, n, output);
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes+=n;
- if (quiet_flag==FALSE)
- progressmeter(1);
#endif
if (got_clen)
filesize -= n;
}
+ if (chunked) {
+ safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
+ safe_fgets(buf, sizeof(buf), dfp);
+ filesize = strtol(buf, (char **) NULL, 16);
+ if (filesize==0) chunked = 0; /* all done! */
+ }
+
if (n == 0 && ferror(dfp))
perror_msg_and_die("network read error");
-
+ } while (chunked);
+#ifdef BB_FEATURE_WGET_STATUSBAR
+ if (quiet_flag==FALSE)
+ progressmeter(1);
+#endif
if (!proxy && target.is_ftp) {
fclose(dfp);
if (ftpcmd(NULL, NULL, sfp, buf) != 226)
error_msg_and_die("ftp error: %s", buf+4);
ftpcmd("QUIT", NULL, sfp, buf);
}
-
exit(EXIT_SUCCESS);
}
memset(&s_in, 0, sizeof(s_in));
s_in.sin_family = AF_INET;
- if ((hp = (struct hostent *) gethostbyname(host)) == NULL)
- error_msg_and_die("cannot resolve %s", host);
+ hp = xgethostbyname(host);
memcpy(&s_in.sin_addr, hp->h_addr_list[0], hp->h_length);
s_in.sin_port = htons(port);
{
static const char prefixes[] = " KMGTP";
static struct timeval lastupdate;
- static off_t lastsize;
+ static off_t lastsize, totalsize;
struct timeval now, td, wait;
off_t cursize, abbrevsize;
double elapsed;
(void) gettimeofday(&start, (struct timezone *) 0);
lastupdate = start;
lastsize = 0;
+ totalsize = filesize; /* as filesize changes.. */
}
(void) gettimeofday(&now, (struct timezone *) 0);
cursize = statbytes;
- if (filesize != 0) {
- ratio = 100.0 * cursize / filesize;
+ if (totalsize != 0 && !chunked) {
+ ratio = 100.0 * cursize / totalsize;
ratio = MAX(ratio, 0);
ratio = MIN(ratio, 100);
} else
timersub(&now, &start, &td);
elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
- if (statbytes <= 0 || elapsed <= 0.0 || cursize > filesize) {
- snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
- " --:-- ETA");
- } else if (wait.tv_sec >= STALLTIME) {
+ if (wait.tv_sec >= STALLTIME) {
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
" - stalled -");
+ } else if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalsize || chunked) {
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ " --:-- ETA");
} else {
- remaining = (int) (filesize / (statbytes / elapsed) - elapsed);
+ remaining = (int) (totalsize / (statbytes / elapsed) - elapsed);
i = remaining / 3600;
if (i)
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
} else if (flag == 1) {
alarmtimer(0);
statbytes = 0;
+ putc('\n', stderr);
}
}
#endif
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * $Id: wget.c,v 1.31 2001/04/05 21:45:53 andersen Exp $
+ * $Id: wget.c,v 1.45 2001/07/19 22:28:01 andersen Exp $
*/
projects / oweals / busybox.git / blobdiff