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A patch from Dmitry Zakharov <dmit@crp.bank.gov.ua> which adds

Browse Source 
- support for ftp downloads
- HTTP basic authentication support (as an optional feature)
- handling of http redirections
- protocol version changed to 1.0 (to stop servers from requesting
chunked encoding)
- bugfix: in the case when content-length not given, wget didn't
download anything
- when attempting to continue an aborted download but server doesn't
support restarts, reopen output file in write mode
- changed assumption that existing file should restart an aborted
    download.  Now the user must explicitly specify this with -c
This commit is contained in:
Eric Andersen 2001-04-05 21:45:54 +00:00
parent ea9065072c
commit 79757c9c37
10 changed files with 589 additions and 203 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Config.h
View File

@ -308,6 +308,9 @@
// Enable a nifty progress meter in wget (adds just under 2k)
#define BB_FEATURE_WGET_STATUSBAR
//
// Enable HTTP authentication in wget
#define BB_FEATURE_WGET_AUTHENTICATION
//
// Clean up all memory before exiting -- usually not needed
// as the OS can clean up... Don't enable this unless you
// have a really good reason for cleaning things up manually.

3
applets/usage.h
View File

@ -1718,9 +1718,10 @@
#define wget_trivial_usage \
"[-c] [-O file] url"
#define wget_full_usage \
"wget retrieves files via HTTP\n\n" \
"wget retrieves files via HTTP or FTP\n\n" \
"Options:\n" \
"\t-c\tcontinue retrieval of aborted transfers\n" \
"\t-q\tquiet mode - do not print\n" \
"\t-O\tsave to filename ('-' for stdout)"
#define which_trivial_usage \

3
debian/Config.h-deb vendored
View File

@ -305,6 +305,9 @@
// Enable a nifty progress meter in wget (adds just under 2k)
#define BB_FEATURE_WGET_STATUSBAR
//
// Enable HTTP authentication in wget
#define BB_FEATURE_WGET_AUTHENTICATION
//
// Clean up all memory before exiting -- usually not needed
// as the OS can clean up... Don't enable this unless you
// have a really good reason for cleaning things up manually.

3
debian/Config.h-static vendored
View File

@ -305,6 +305,9 @@
// Enable a nifty progress meter in wget (adds just under 2k)
#define BB_FEATURE_WGET_STATUSBAR
//
// Enable HTTP authentication in wget
#define BB_FEATURE_WGET_AUTHENTICATION
//
// Clean up all memory before exiting -- usually not needed
// as the OS can clean up... Don't enable this unless you
// have a really good reason for cleaning things up manually.

3
debian/Config.h-udeb vendored
View File

@ -305,6 +305,9 @@
// Enable a nifty progress meter in wget (adds just under 2k)
#define BB_FEATURE_WGET_STATUSBAR
//
// Enable HTTP authentication in wget
#define BB_FEATURE_WGET_AUTHENTICATION
//
// Clean up all memory before exiting -- usually not needed
// as the OS can clean up... Don't enable this unless you
// have a really good reason for cleaning things up manually.

5
docs/busybox.pod
View File

@ -2346,11 +2346,12 @@ Example:
wget [B<-c>] [B<-O> file] url
wget retrieves files via HTTP
wget retrieves files via HTTP or FTP
Options:
-c continue retrieval of aborted transfers
-q quiet mode - do not print
-O save to filename ('-' for stdout)
-------------------------------
@ -2552,4 +2553,4 @@ Enrique Zanardi <ezanardi@ull.es>
=cut
# $Id: busybox.pod,v 1.95 2001/04/05 20:03:33 beppu Exp $
# $Id: busybox.pod,v 1.96 2001/04/05 21:45:54 andersen Exp $

3
include/usage.h
View File

@ -1718,9 +1718,10 @@
#define wget_trivial_usage \
"[-c] [-O file] url"
#define wget_full_usage \
"wget retrieves files via HTTP\n\n" \
"wget retrieves files via HTTP or FTP\n\n" \
"Options:\n" \
"\t-c\tcontinue retrieval of aborted transfers\n" \
"\t-q\tquiet mode - do not print\n" \
"\t-O\tsave to filename ('-' for stdout)"
#define which_trivial_usage \

383
networking/wget.c
View File

@ -1,6 +1,6 @@
/* vi: set sw=4 ts=4: */
/*
* wget - retrieve a file using HTTP
* wget - retrieve a file using HTTP or FTP
*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
*
@ -47,9 +47,18 @@
} while (0)
#endif
static void parse_url(char *url, char **uri_host, int *uri_port, char **uri_path);
struct host_info {
char *host;
int port;
char *path;
int is_ftp;
char *user;
};
static void parse_url(char *url, struct host_info *h);
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 */
@ -70,16 +79,52 @@ static void close_and_delete_outfile(FILE* output, char *fname_out, int do_conti
}
}
#define close_delete_and_die(s...) { \
close_and_delete_outfile(output, fname_out, do_continue); \
error_msg_and_die(s); }
#ifdef BB_FEATURE_WGET_AUTHENTICATION
/*
* Base64-encode character string
* oops... isn't something similar in uuencode.c?
* It would be better to use already existing code
*/
char *base64enc(char *p, char *buf, int len) {
char al[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
"0123456789+/";
char *s = buf;
while(*p) {
if (s >= buf+len-4)
error_msg_and_die("buffer overflow");
*(s++) = al[(*p >> 2) & 0x3F];
*(s++) = al[((*p << 4) & 0x30) | ((*(p+1) >> 4) & 0x0F)];
*s = *(s+1) = '=';
*(s+2) = 0;
if (! *(++p)) break;
*(s++) = al[((*p << 2) & 0x3C) | ((*(p+1) >> 6) & 0x03)];
if (! *(++p)) break;
*(s++) = al[*(p++) & 0x3F];
}
return buf;
}
#endif
int wget_main(int argc, char **argv)
{
int n;
char *proxy, *proxy_host;
int uri_port, proxy_port;
int n, try=5, status;
int port;
char *proxy;
char *s, buf[512];
struct stat sbuf;
FILE *sfp; /* socket to web server */
char *uri_host, *uri_path; /* parsed from command line url */
struct host_info server, target;
FILE *sfp = NULL; /* socket to web/ftp server */
FILE *dfp = NULL; /* socket to ftp server (data) */
char *fname_out = NULL; /* where to direct output (-O) */
int do_continue = 0; /* continue a prev transfer (-c) */
long beg_range = 0L; /* range at which continue begins */
@ -113,21 +158,16 @@ int wget_main(int argc, char **argv)
if (argc - optind != 1)
show_usage();
parse_url(argv[optind], &target);
server.host = target.host;
server.port = target.port;
/*
* Use the proxy if necessary.
*/
if ((proxy = getenv("http_proxy")) != NULL) {
proxy = xstrdup(proxy);
parse_url(proxy, &proxy_host, &proxy_port, &uri_path);
parse_url(argv[optind], &uri_host, &uri_port, &uri_path);
} else {
/*
* Parse url into components.
*/
parse_url(argv[optind], &uri_host, &uri_port, &uri_path);
proxy_host=uri_host;
proxy_port=uri_port;
}
proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
if (proxy)
parse_url(xstrdup(proxy), &server);
/* Guess an output filename */
if (!fname_out) {
@ -135,7 +175,7 @@ int wget_main(int argc, char **argv)
#ifdef BB_FEATURE_WGET_STATUSBAR
curfile =
#endif
get_last_path_component(uri_path);
get_last_path_component(target.path);
if (fname_out==NULL || strlen(fname_out)<1) {
fname_out =
#ifdef BB_FEATURE_WGET_STATUSBAR
@ -145,25 +185,13 @@ int wget_main(int argc, char **argv)
}
#ifdef BB_FEATURE_WGET_STATUSBAR
} else {
curfile=argv[optind];
curfile = get_last_path_component(fname_out);
#endif
}
if (do_continue && !fname_out)
error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
/*
* Open socket to server.
*/
sfp = open_socket(proxy_host, proxy_port);
/* Make the assumption that if the file already exists
* on disk that the intention is to continue downloading
* a previously aborted download -Erik */
if (stat(fname_out, &sbuf) == 0) {
++do_continue;
}
/*
* Open the output file stream.
*/
@ -185,67 +213,185 @@ int wget_main(int argc, char **argv)
do_continue = 0;
}
/*
* Send HTTP request.
*/
fprintf(sfp, "GET http://%s:%d/%s HTTP/1.1\r\n",
uri_host, uri_port, uri_path);
fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", uri_host);
if (proxy || !target.is_ftp) {
/*
* HTTP session
*/
do {
if (! --try)
close_delete_and_die("too many redirections");
if (do_continue)
fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
fprintf(sfp,"Connection: close\r\n\r\n");
/*
* Open socket to http server
*/
if (sfp) fclose(sfp);
sfp = open_socket(server.host, server.port);
/*
* Send HTTP request.
*/
if (proxy) {
fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.0\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, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
#ifdef BB_FEATURE_WGET_AUTHENTICATION
if (target.user) {
fprintf(sfp, "Authorization: Basic %s\r\n",
base64enc(target.user, buf, sizeof(buf)));
}
if (proxy && server.user) {
fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
base64enc(server.user, buf, sizeof(buf)));
}
#endif
/*
* Retrieve HTTP response line and check for "200" status code.
*/
if (fgets(buf, sizeof(buf), sfp) == NULL) {
close_and_delete_outfile(output, fname_out, do_continue);
error_msg_and_die("no response from server");
}
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
;
for ( ; isspace(*s) ; ++s)
;
switch (atoi(s)) {
case 0:
case 200:
break;
case 206:
if (do_continue)
fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
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)
close_delete_and_die("no response from server");
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
;
for ( ; isspace(*s) ; ++s)
;
switch (status = atoi(s)) {
case 0:
case 200:
if (do_continue && output != stdout)
output = freopen(fname_out, "w", output);
do_continue = 0;
break;
case 300: /* redirection */
case 301:
case 302:
case 303:
break;
case 206:
if (do_continue)
break;
/*FALLTHRU*/
default:
chomp(buf);
close_delete_and_die("server returned error %d: %s", atoi(s), buf);
}
/*
* Retrieve HTTP headers.
*/
while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
if (strcasecmp(buf, "content-length") == 0) {
filesize = atol(s);
got_clen = 1;
continue;
}
if (strcasecmp(buf, "transfer-encoding") == 0)
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);
else {
parse_url(xstrdup(s), &target);
if (!proxy) {
server.host = target.host;
server.port = target.port;
}
}
}
}
} while(status >= 300);
dfp = sfp;
}
else
{
/*
* FTP session
*/
if (! target.user)
target.user = xstrdup("anonymous:busybox@");
sfp = open_socket(server.host, server.port);
if (ftpcmd(NULL, NULL, sfp, buf) != 220)
close_delete_and_die("%s", buf+4);
/*
* Splitting username:password pair,
* trying to log in
*/
s = strchr(target.user, ':');
if (s)
*(s++) = '\0';
switch(ftpcmd("USER ", target.user, sfp, buf)) {
case 230:
break;
/*FALLTHRU*/
default:
close_and_delete_outfile(output, fname_out, do_continue);
chomp(buf);
error_msg_and_die("server returned error %d: %s", atoi(s), buf);
}
/*
* Retrieve HTTP headers.
*/
while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
if (strcasecmp(buf, "content-length") == 0) {
filesize = atol(s);
case 331:
if (ftpcmd("PASS ", s, sfp, buf) == 230)
break;
/* FALLTHRU (failed login) */
default:
close_delete_and_die("ftp login: %s", buf+4);
}
ftpcmd("CDUP", NULL, sfp, buf);
ftpcmd("TYPE I", NULL, sfp, buf);
/*
* Querying file size
*/
if (ftpcmd("SIZE /", target.path, sfp, buf) == 213) {
filesize = atol(buf+4);
got_clen = 1;
continue;
}
if (strcasecmp(buf, "transfer-encoding") == 0) {
close_and_delete_outfile(output, fname_out, do_continue);
error_msg_and_die("server wants to do %s transfer encoding", s);
continue;
/*
* Entering passive mode
*/
if (ftpcmd("PASV", NULL, sfp, buf) != 227)
close_delete_and_die("PASV: %s", buf+4);
s = strrchr(buf, ',');
*s = 0;
port = atoi(s+1);
s = strrchr(buf, ',');
port += atoi(s+1) * 256;
dfp = open_socket(server.host, port);
if (do_continue) {
sprintf(buf, "REST %ld", beg_range);
if (ftpcmd(buf, NULL, sfp, buf) != 350) {
if (output != stdout)
output = freopen(fname_out, "w", output);
do_continue = 0;
} else
filesize -= beg_range;
}
if (ftpcmd("RETR /", target.path, sfp, buf) > 150)
close_delete_and_die("RETR: %s", buf+4);
}
/*
* Retrieve HTTP body.
* Retrieve file
*/
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes=0;
if (quiet_flag==FALSE)
progressmeter(-1);
#endif
while (filesize > 0 && (n = fread(buf, 1, sizeof(buf), sfp)) > 0) {
while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, sizeof(buf), dfp)) > 0) {
fwrite(buf, 1, n, output);
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes+=n;
@ -255,37 +401,57 @@ int wget_main(int argc, char **argv)
if (got_clen)
filesize -= n;
}
if (n == 0 && ferror(sfp))
if (n == 0 && ferror(dfp))
perror_msg_and_die("network read error");
exit(0);
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);
}
void parse_url(char *url, char **uri_host, int *uri_port, char **uri_path)
void parse_url(char *url, struct host_info *h)
{
char *cp, *sp;
char *cp, *sp, *up;
*uri_port = 80;
if (strncmp(url, "http://", 7) != 0)
error_msg_and_die("not an http url: %s", url);
*uri_host = url + 7;
cp = strchr(*uri_host, ':');
sp = strchr(*uri_host, '/');
if (cp != NULL && (sp == NULL || cp < sp)) {
*cp++ = '\0';
*uri_port = atoi(cp);
}
if (strncmp(url, "http://", 7) == 0) {
h->port = 80;
h->host = url + 7;
h->is_ftp = 0;
} else if (strncmp(url, "ftp://", 6) == 0) {
h->port = 21;
h->host = url + 6;
h->is_ftp = 1;
} else
error_msg_and_die("not an http or ftp url: %s", url);
sp = strchr(h->host, '/');
if (sp != NULL) {
*sp++ = '\0';
*uri_path = sp;
h->path = sp;
} else
*uri_path = "";
h->path = "";
up = strrchr(h->host, '@');
if (up != NULL) {
h->user = h->host;
*up++ = '\0';
h->host = up;
} else
h->user = NULL;
cp = strchr(h->host, ':');
if (cp != NULL) {
*cp++ = '\0';
h->port = atoi(cp);
}
}
@ -364,6 +530,25 @@ char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc)
return hdrval;
}
static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf)
{
char *p;
if (s1) {
if (!s2) s2="";
fprintf(fp, "%s%s\n", s1, s2);
fflush(fp);
}
do {
p = fgets(buf, 510, fp);
if (!p)
perror_msg_and_die("fgets()");
} while (! isdigit(buf[0]) || buf[3] != ' ');
return atoi(buf);
}
#ifdef BB_FEATURE_WGET_STATUSBAR
/* Stuff below is from BSD rcp util.c, as added to openshh.
* Original copyright notice is retained at the end of this file.
@ -534,7 +719,7 @@ progressmeter(int flag)
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: wget.c,v 1.30 2001/03/21 07:34:26 andersen Exp $
* $Id: wget.c,v 1.31 2001/04/05 21:45:53 andersen Exp $
*/

3
usage.h
View File

@ -1718,9 +1718,10 @@
#define wget_trivial_usage \
"[-c] [-O file] url"
#define wget_full_usage \
"wget retrieves files via HTTP\n\n" \
"wget retrieves files via HTTP or FTP\n\n" \
"Options:\n" \
"\t-c\tcontinue retrieval of aborted transfers\n" \
"\t-q\tquiet mode - do not print\n" \
"\t-O\tsave to filename ('-' for stdout)"
#define which_trivial_usage \

383
wget.c
View File

@ -1,6 +1,6 @@
/* vi: set sw=4 ts=4: */
/*
* wget - retrieve a file using HTTP
* wget - retrieve a file using HTTP or FTP
*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
*
@ -47,9 +47,18 @@
} while (0)
#endif
static void parse_url(char *url, char **uri_host, int *uri_port, char **uri_path);
struct host_info {
char *host;
int port;
char *path;
int is_ftp;
char *user;
};
static void parse_url(char *url, struct host_info *h);
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 */
@ -70,16 +79,52 @@ static void close_and_delete_outfile(FILE* output, char *fname_out, int do_conti
}
}
#define close_delete_and_die(s...) { \
close_and_delete_outfile(output, fname_out, do_continue); \
error_msg_and_die(s); }
#ifdef BB_FEATURE_WGET_AUTHENTICATION
/*
* Base64-encode character string
* oops... isn't something similar in uuencode.c?
* It would be better to use already existing code
*/
char *base64enc(char *p, char *buf, int len) {
char al[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
"0123456789+/";
char *s = buf;
while(*p) {
if (s >= buf+len-4)
error_msg_and_die("buffer overflow");
*(s++) = al[(*p >> 2) & 0x3F];
*(s++) = al[((*p << 4) & 0x30) | ((*(p+1) >> 4) & 0x0F)];
*s = *(s+1) = '=';
*(s+2) = 0;
if (! *(++p)) break;
*(s++) = al[((*p << 2) & 0x3C) | ((*(p+1) >> 6) & 0x03)];
if (! *(++p)) break;
*(s++) = al[*(p++) & 0x3F];
}
return buf;
}
#endif
int wget_main(int argc, char **argv)
{
int n;
char *proxy, *proxy_host;
int uri_port, proxy_port;
int n, try=5, status;
int port;
char *proxy;
char *s, buf[512];
struct stat sbuf;
FILE *sfp; /* socket to web server */
char *uri_host, *uri_path; /* parsed from command line url */
struct host_info server, target;
FILE *sfp = NULL; /* socket to web/ftp server */
FILE *dfp = NULL; /* socket to ftp server (data) */
char *fname_out = NULL; /* where to direct output (-O) */
int do_continue = 0; /* continue a prev transfer (-c) */
long beg_range = 0L; /* range at which continue begins */
@ -113,21 +158,16 @@ int wget_main(int argc, char **argv)
if (argc - optind != 1)
show_usage();
parse_url(argv[optind], &target);
server.host = target.host;
server.port = target.port;
/*
* Use the proxy if necessary.
*/
if ((proxy = getenv("http_proxy")) != NULL) {
proxy = xstrdup(proxy);
parse_url(proxy, &proxy_host, &proxy_port, &uri_path);
parse_url(argv[optind], &uri_host, &uri_port, &uri_path);
} else {
/*
* Parse url into components.
*/
parse_url(argv[optind], &uri_host, &uri_port, &uri_path);
proxy_host=uri_host;
proxy_port=uri_port;
}
proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
if (proxy)
parse_url(xstrdup(proxy), &server);
/* Guess an output filename */
if (!fname_out) {
@ -135,7 +175,7 @@ int wget_main(int argc, char **argv)
#ifdef BB_FEATURE_WGET_STATUSBAR
curfile =
#endif
get_last_path_component(uri_path);
get_last_path_component(target.path);
if (fname_out==NULL || strlen(fname_out)<1) {
fname_out =
#ifdef BB_FEATURE_WGET_STATUSBAR
@ -145,25 +185,13 @@ int wget_main(int argc, char **argv)
}
#ifdef BB_FEATURE_WGET_STATUSBAR
} else {
curfile=argv[optind];
curfile = get_last_path_component(fname_out);
#endif
}
if (do_continue && !fname_out)
error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
/*
* Open socket to server.
*/
sfp = open_socket(proxy_host, proxy_port);
/* Make the assumption that if the file already exists
* on disk that the intention is to continue downloading
* a previously aborted download -Erik */
if (stat(fname_out, &sbuf) == 0) {
++do_continue;
}
/*
* Open the output file stream.
*/
@ -185,67 +213,185 @@ int wget_main(int argc, char **argv)
do_continue = 0;
}
/*
* Send HTTP request.
*/
fprintf(sfp, "GET http://%s:%d/%s HTTP/1.1\r\n",
uri_host, uri_port, uri_path);
fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", uri_host);
if (proxy || !target.is_ftp) {
/*
* HTTP session
*/
do {
if (! --try)
close_delete_and_die("too many redirections");
if (do_continue)
fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
fprintf(sfp,"Connection: close\r\n\r\n");
/*
* Open socket to http server
*/
if (sfp) fclose(sfp);
sfp = open_socket(server.host, server.port);
/*
* Send HTTP request.
*/
if (proxy) {
fprintf(sfp, "GET %stp://%s:%d/%s HTTP/1.0\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, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
#ifdef BB_FEATURE_WGET_AUTHENTICATION
if (target.user) {
fprintf(sfp, "Authorization: Basic %s\r\n",
base64enc(target.user, buf, sizeof(buf)));
}
if (proxy && server.user) {
fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
base64enc(server.user, buf, sizeof(buf)));
}
#endif
/*
* Retrieve HTTP response line and check for "200" status code.
*/
if (fgets(buf, sizeof(buf), sfp) == NULL) {
close_and_delete_outfile(output, fname_out, do_continue);
error_msg_and_die("no response from server");
}
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
;
for ( ; isspace(*s) ; ++s)
;
switch (atoi(s)) {
case 0:
case 200:
break;
case 206:
if (do_continue)
fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
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)
close_delete_and_die("no response from server");
for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
;
for ( ; isspace(*s) ; ++s)
;
switch (status = atoi(s)) {
case 0:
case 200:
if (do_continue && output != stdout)
output = freopen(fname_out, "w", output);
do_continue = 0;
break;
case 300: /* redirection */
case 301:
case 302:
case 303:
break;
case 206:
if (do_continue)
break;
/*FALLTHRU*/
default:
chomp(buf);
close_delete_and_die("server returned error %d: %s", atoi(s), buf);
}
/*
* Retrieve HTTP headers.
*/
while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
if (strcasecmp(buf, "content-length") == 0) {
filesize = atol(s);
got_clen = 1;
continue;
}
if (strcasecmp(buf, "transfer-encoding") == 0)
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);
else {
parse_url(xstrdup(s), &target);
if (!proxy) {
server.host = target.host;
server.port = target.port;
}
}
}
}
} while(status >= 300);
dfp = sfp;
}
else
{
/*
* FTP session
*/
if (! target.user)
target.user = xstrdup("anonymous:busybox@");
sfp = open_socket(server.host, server.port);
if (ftpcmd(NULL, NULL, sfp, buf) != 220)
close_delete_and_die("%s", buf+4);
/*
* Splitting username:password pair,
* trying to log in
*/
s = strchr(target.user, ':');
if (s)
*(s++) = '\0';
switch(ftpcmd("USER ", target.user, sfp, buf)) {
case 230:
break;
/*FALLTHRU*/
default:
close_and_delete_outfile(output, fname_out, do_continue);
chomp(buf);
error_msg_and_die("server returned error %d: %s", atoi(s), buf);
}
/*
* Retrieve HTTP headers.
*/
while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
if (strcasecmp(buf, "content-length") == 0) {
filesize = atol(s);
case 331:
if (ftpcmd("PASS ", s, sfp, buf) == 230)
break;
/* FALLTHRU (failed login) */
default:
close_delete_and_die("ftp login: %s", buf+4);
}
ftpcmd("CDUP", NULL, sfp, buf);
ftpcmd("TYPE I", NULL, sfp, buf);
/*
* Querying file size
*/
if (ftpcmd("SIZE /", target.path, sfp, buf) == 213) {
filesize = atol(buf+4);
got_clen = 1;
continue;
}
if (strcasecmp(buf, "transfer-encoding") == 0) {
close_and_delete_outfile(output, fname_out, do_continue);
error_msg_and_die("server wants to do %s transfer encoding", s);
continue;
/*
* Entering passive mode
*/
if (ftpcmd("PASV", NULL, sfp, buf) != 227)
close_delete_and_die("PASV: %s", buf+4);
s = strrchr(buf, ',');
*s = 0;
port = atoi(s+1);
s = strrchr(buf, ',');
port += atoi(s+1) * 256;
dfp = open_socket(server.host, port);
if (do_continue) {
sprintf(buf, "REST %ld", beg_range);
if (ftpcmd(buf, NULL, sfp, buf) != 350) {
if (output != stdout)
output = freopen(fname_out, "w", output);
do_continue = 0;
} else
filesize -= beg_range;
}
if (ftpcmd("RETR /", target.path, sfp, buf) > 150)
close_delete_and_die("RETR: %s", buf+4);
}
/*
* Retrieve HTTP body.
* Retrieve file
*/
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes=0;
if (quiet_flag==FALSE)
progressmeter(-1);
#endif
while (filesize > 0 && (n = fread(buf, 1, sizeof(buf), sfp)) > 0) {
while ((filesize > 0 || !got_clen) && (n = fread(buf, 1, sizeof(buf), dfp)) > 0) {
fwrite(buf, 1, n, output);
#ifdef BB_FEATURE_WGET_STATUSBAR
statbytes+=n;
@ -255,37 +401,57 @@ int wget_main(int argc, char **argv)
if (got_clen)
filesize -= n;
}
if (n == 0 && ferror(sfp))
if (n == 0 && ferror(dfp))
perror_msg_and_die("network read error");
exit(0);
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);
}
void parse_url(char *url, char **uri_host, int *uri_port, char **uri_path)
void parse_url(char *url, struct host_info *h)
{
char *cp, *sp;
char *cp, *sp, *up;
*uri_port = 80;
if (strncmp(url, "http://", 7) != 0)
error_msg_and_die("not an http url: %s", url);
*uri_host = url + 7;
cp = strchr(*uri_host, ':');
sp = strchr(*uri_host, '/');
if (cp != NULL && (sp == NULL || cp < sp)) {
*cp++ = '\0';
*uri_port = atoi(cp);
}
if (strncmp(url, "http://", 7) == 0) {
h->port = 80;
h->host = url + 7;
h->is_ftp = 0;
} else if (strncmp(url, "ftp://", 6) == 0) {
h->port = 21;
h->host = url + 6;
h->is_ftp = 1;
} else
error_msg_and_die("not an http or ftp url: %s", url);
sp = strchr(h->host, '/');
if (sp != NULL) {
*sp++ = '\0';
*uri_path = sp;
h->path = sp;
} else
*uri_path = "";
h->path = "";
up = strrchr(h->host, '@');
if (up != NULL) {
h->user = h->host;
*up++ = '\0';
h->host = up;
} else
h->user = NULL;
cp = strchr(h->host, ':');
if (cp != NULL) {
*cp++ = '\0';
h->port = atoi(cp);
}
}
@ -364,6 +530,25 @@ char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc)
return hdrval;
}
static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf)
{
char *p;
if (s1) {
if (!s2) s2="";
fprintf(fp, "%s%s\n", s1, s2);
fflush(fp);
}
do {
p = fgets(buf, 510, fp);
if (!p)
perror_msg_and_die("fgets()");
} while (! isdigit(buf[0]) || buf[3] != ' ');
return atoi(buf);
}
#ifdef BB_FEATURE_WGET_STATUSBAR
/* Stuff below is from BSD rcp util.c, as added to openshh.
* Original copyright notice is retained at the end of this file.
@ -534,7 +719,7 @@ progressmeter(int flag)
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: wget.c,v 1.30 2001/03/21 07:34:26 andersen Exp $
* $Id: wget.c,v 1.31 2001/04/05 21:45:53 andersen Exp $
*/