*
* Chip Rosenthal Covad Communications <chip@laserlink.net>
*
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
-
-#include <getopt.h> /* for struct option */
#include "libbb.h"
struct host_info {
off_t content_len; /* Content-length of the file */
off_t beg_range; /* Range at which continue begins */
#if ENABLE_FEATURE_WGET_STATUSBAR
- off_t lastsize;
- off_t totalsize;
off_t transferred; /* Number of bytes transferred so far */
const char *curfile; /* Name of current file being transferred */
- unsigned lastupdate_sec;
- unsigned start_sec;
+ bb_progress_t pmt;
#endif
- smallint chunked; /* chunked transfer encoding */
+ smallint chunked; /* chunked transfer encoding */
+ smallint got_clen; /* got content-length: from server */
};
#define G (*(struct globals*)&bb_common_bufsiz1)
struct BUG_G_too_big {
char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
};
-#define content_len (G.content_len )
-#define beg_range (G.beg_range )
-#define lastsize (G.lastsize )
-#define totalsize (G.totalsize )
-#define transferred (G.transferred )
-#define curfile (G.curfile )
-#define lastupdate_sec (G.lastupdate_sec )
-#define start_sec (G.start_sec )
-#define chunked (G.chunked )
#define INIT_G() do { } while (0)
#if ENABLE_FEATURE_WGET_STATUSBAR
-enum {
- STALLTIME = 5 /* Seconds when xfer considered "stalled" */
-};
-static int getttywidth(void)
-{
- int width;
- get_terminal_width_height(0, &width, NULL);
- return width;
-}
-
-static void progressmeter(int flag)
+static void progress_meter(int flag)
{
/* We can be called from signal handler */
int save_errno = errno;
- off_t abbrevsize;
- unsigned since_last_update, elapsed;
- unsigned ratio;
- int barlength, i;
-
- if (flag == -1) { /* first call to progressmeter */
- start_sec = monotonic_sec();
- lastupdate_sec = start_sec;
- lastsize = 0;
- totalsize = content_len + beg_range; /* as content_len changes.. */
- }
- ratio = 100;
- if (totalsize != 0 && !chunked) {
- /* long long helps to have it working even if !LFS */
- ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize);
- if (ratio > 100) ratio = 100;
+ if (flag == -1) { /* first call to progress_meter */
+ bb_progress_init(&G.pmt);
}
- fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
-
- barlength = getttywidth() - 49;
- if (barlength > 0) {
- /* god bless gcc for variable arrays :) */
- i = barlength * ratio / 100;
- {
- char buf[i+1];
- memset(buf, '*', i);
- buf[i] = '\0';
- fprintf(stderr, "|%s%*s|", buf, barlength - i, "");
- }
- }
- i = 0;
- abbrevsize = transferred + beg_range;
- while (abbrevsize >= 100000) {
- i++;
- abbrevsize >>= 10;
- }
- /* see http://en.wikipedia.org/wiki/Tera */
- fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]);
-
-// Nuts! Ain't it easier to update progress meter ONLY when we transferred++?
-
- elapsed = monotonic_sec();
- since_last_update = elapsed - lastupdate_sec;
- if (transferred > lastsize) {
- lastupdate_sec = elapsed;
- lastsize = transferred;
- if (since_last_update >= STALLTIME) {
- /* We "cut off" these seconds from elapsed time
- * by adjusting start time */
- start_sec += since_last_update;
- }
- since_last_update = 0; /* we are un-stalled now */
- }
- elapsed -= start_sec; /* now it's "elapsed since start" */
-
- if (since_last_update >= STALLTIME) {
- fprintf(stderr, " - stalled -");
- } else {
- off_t to_download = totalsize - beg_range;
- if (transferred <= 0 || (int)elapsed <= 0 || transferred > to_download || chunked) {
- fprintf(stderr, "--:--:-- ETA");
- } else {
- /* to_download / (transferred/elapsed) - elapsed: */
- int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed);
- /* (long long helps to have working ETA even if !LFS) */
- i = eta % 3600;
- fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
- }
- }
+ bb_progress_update(&G.pmt, G.curfile, G.beg_range, G.transferred,
+ G.chunked ? 0 : G.content_len + G.beg_range);
if (flag == 0) {
- /* last call to progressmeter */
+ /* last call to progress_meter */
alarm(0);
- transferred = 0;
fputc('\n', stderr);
+ G.transferred = 0;
} else {
- if (flag == -1) {
- /* first call to progressmeter */
- struct sigaction sa;
- sa.sa_handler = progressmeter;
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = SA_RESTART;
- sigaction(SIGALRM, &sa, NULL);
+ if (flag == -1) { /* first call to progress_meter */
+ signal_SA_RESTART_empty_mask(SIGALRM, progress_meter);
}
alarm(1);
}
errno = save_errno;
}
-/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
- * much of which was blatantly stolen from openssh. */
-/*-
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
- * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
- *
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
+
#else /* FEATURE_WGET_STATUSBAR */
-static ALWAYS_INLINE void progressmeter(int flag) { }
+static ALWAYS_INLINE void progress_meter(int flag UNUSED_PARAM) { }
#endif
+/* IPv6 knows scoped address types i.e. link and site local addresses. Link
+ * local addresses can have a scope identifier to specify the
+ * interface/link an address is valid on (e.g. fe80::1%eth0). This scope
+ * identifier is only valid on a single node.
+ *
+ * RFC 4007 says that the scope identifier MUST NOT be sent across the wire,
+ * unless all nodes agree on the semantic. Apache e.g. regards zone identifiers
+ * in the Host header as invalid requests, see
+ * https://issues.apache.org/bugzilla/show_bug.cgi?id=35122
+ */
+static void strip_ipv6_scope_id(char *host)
+{
+ char *scope, *cp;
+
+ /* bbox wget actually handles IPv6 addresses without [], like
+ * wget "http://::1/xxx", but this is not standard.
+ * To save code, _here_ we do not support it. */
+
+ if (host[0] != '[')
+ return; /* not IPv6 */
+
+ scope = strchr(host, '%');
+ if (!scope)
+ return;
+
+ /* Remove the IPv6 zone identifier from the host address */
+ cp = strchr(host, ']');
+ if (!cp || (cp[1] != ':' && cp[1] != '\0')) {
+ /* malformed address (not "[xx]:nn" or "[xx]") */
+ return;
+ }
+
+ /* cp points to "]...", scope points to "%eth0]..." */
+ overlapping_strcpy(scope, cp);
+}
+
/* Read NMEMB bytes into PTR from STREAM. Returns the number of bytes read,
* and a short count if an eof or non-interrupt error is encountered. */
static size_t safe_fread(void *ptr, size_t nmemb, FILE *stream)
do {
clearerr(stream);
+ errno = 0;
ret = fread(p, 1, nmemb, stream);
p += ret;
nmemb -= ret;
do {
clearerr(stream);
+ errno = 0;
ret = fgets(s, size, stream);
} while (ret == NULL && ferror(stream) && errno == EINTR);
}
#endif
+static char* sanitize_string(char *s)
+{
+ unsigned char *p = (void *) s;
+ while (*p >= ' ')
+ p++;
+ *p = '\0';
+ return s;
+}
static FILE *open_socket(len_and_sockaddr *lsa)
{
return fp;
}
-
static int ftpcmd(const char *s1, const char *s2, FILE *fp, char *buf)
{
int result;
return result;
}
-
static void parse_url(char *src_url, struct host_info *h)
{
char *url, *p, *sp;
h->host = url + 6;
h->is_ftp = 1;
} else
- bb_error_msg_and_die("not an http or ftp url: %s", url);
+ bb_error_msg_and_die("not an http or ftp url: %s", sanitize_string(url));
// FYI:
// "Real" wget 'http://busybox.net?var=a/b' sends this request:
h->path = sp;
}
+ // We used to set h->user to NULL here, but this interferes
+ // with handling of code 302 ("object was moved")
+
sp = strrchr(h->host, '@');
- h->user = NULL;
if (sp != NULL) {
h->user = h->host;
*sp = '\0';
sp = h->host;
}
-
static char *gethdr(char *buf, size_t bufsiz, FILE *fp /*, int *istrunc*/)
{
char *s, *hdrval;
/* verify we are at the end of the header name */
if (*s != ':')
- bb_error_msg_and_die("bad header line: %s", buf);
+ bb_error_msg_and_die("bad header line: %s", sanitize_string(buf));
/* locate the start of the header value */
*s++ = '\0';
return hdrval;
}
- /* Rats! The buffer isn't big enough to hold the entire header value. */
+ /* Rats! The buffer isn't big enough to hold the entire header value */
while (c = getc(fp), c != EOF && c != '\n')
continue;
/* *istrunc = 1; */
return hdrval;
}
+#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+static char *URL_escape(const char *str)
+{
+ /* URL encode, see RFC 2396 */
+ char *dst;
+ char *res = dst = xmalloc(strlen(str) * 3 + 1);
+ unsigned char c;
+
+ while (1) {
+ c = *str++;
+ if (c == '\0'
+ /* || strchr("!&'()*-.=_~", c) - more code */
+ || c == '!'
+ || c == '&'
+ || c == '\''
+ || c == '('
+ || c == ')'
+ || c == '*'
+ || c == '-'
+ || c == '.'
+ || c == '='
+ || c == '_'
+ || c == '~'
+ || (c >= '0' && c <= '9')
+ || ((c|0x20) >= 'a' && (c|0x20) <= 'z')
+ ) {
+ *dst++ = c;
+ if (c == '\0')
+ return res;
+ } else {
+ *dst++ = '%';
+ *dst++ = bb_hexdigits_upcase[c >> 4];
+ *dst++ = bb_hexdigits_upcase[c & 0xf];
+ }
+ }
+}
+#endif
+
+static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_sockaddr *lsa)
+{
+ char buf[512];
+ FILE *sfp;
+ char *str;
+ int port;
+
+ if (!target->user)
+ target->user = xstrdup("anonymous:busybox@");
+
+ sfp = open_socket(lsa);
+ if (ftpcmd(NULL, NULL, sfp, buf) != 220)
+ bb_error_msg_and_die("%s", sanitize_string(buf+4));
+
+ /*
+ * Splitting username:password pair,
+ * trying to log in
+ */
+ str = strchr(target->user, ':');
+ if (str)
+ *str++ = '\0';
+ switch (ftpcmd("USER ", target->user, sfp, buf)) {
+ case 230:
+ break;
+ case 331:
+ if (ftpcmd("PASS ", str, sfp, buf) == 230)
+ break;
+ /* fall through (failed login) */
+ default:
+ bb_error_msg_and_die("ftp login: %s", sanitize_string(buf+4));
+ }
+
+ ftpcmd("TYPE I", NULL, sfp, buf);
+
+ /*
+ * Querying file size
+ */
+ if (ftpcmd("SIZE ", target->path, sfp, buf) == 213) {
+ G.content_len = BB_STRTOOFF(buf+4, NULL, 10);
+ if (G.content_len < 0 || errno) {
+ bb_error_msg_and_die("SIZE value is garbage");
+ }
+ G.got_clen = 1;
+ }
+
+ /*
+ * Entering passive mode
+ */
+ if (ftpcmd("PASV", NULL, sfp, buf) != 227) {
+ pasv_error:
+ bb_error_msg_and_die("bad response to %s: %s", "PASV", sanitize_string(buf));
+ }
+ // Response is "227 garbageN1,N2,N3,N4,P1,P2[)garbage]
+ // Server's IP is N1.N2.N3.N4 (we ignore it)
+ // Server's port for data connection is P1*256+P2
+ str = strrchr(buf, ')');
+ if (str) str[0] = '\0';
+ str = strrchr(buf, ',');
+ if (!str) goto pasv_error;
+ port = xatou_range(str+1, 0, 255);
+ *str = '\0';
+ str = strrchr(buf, ',');
+ if (!str) goto pasv_error;
+ port += xatou_range(str+1, 0, 255) * 256;
+ set_nport(lsa, htons(port));
+
+ *dfpp = open_socket(lsa);
+
+ if (G.beg_range) {
+ sprintf(buf, "REST %"OFF_FMT"u", G.beg_range);
+ if (ftpcmd(buf, NULL, sfp, buf) == 350)
+ G.content_len -= G.beg_range;
+ }
+
+ if (ftpcmd("RETR ", target->path, sfp, buf) > 150)
+ bb_error_msg_and_die("bad response to %s: %s", "RETR", sanitize_string(buf));
+
+ return sfp;
+}
+
+/* Must match option string! */
+enum {
+ WGET_OPT_CONTINUE = (1 << 0),
+ WGET_OPT_SPIDER = (1 << 1),
+ WGET_OPT_QUIET = (1 << 2),
+ WGET_OPT_OUTNAME = (1 << 3),
+ WGET_OPT_PREFIX = (1 << 4),
+ WGET_OPT_PROXY = (1 << 5),
+ WGET_OPT_USER_AGENT = (1 << 6),
+ WGET_OPT_RETRIES = (1 << 7),
+ WGET_OPT_NETWORK_READ_TIMEOUT = (1 << 8),
+ WGET_OPT_PASSIVE = (1 << 9),
+ WGET_OPT_HEADER = (1 << 10) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
+ WGET_OPT_POST_DATA = (1 << 11) * ENABLE_FEATURE_WGET_LONG_OPTIONS,
+};
+
+static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
+{
+ char buf[512];
+
+ if (!(option_mask32 & WGET_OPT_QUIET))
+ progress_meter(-1);
+
+ if (G.chunked)
+ goto get_clen;
+
+ /* Loops only if chunked */
+ while (1) {
+ while (1) {
+ int n;
+ unsigned rdsz;
+
+ rdsz = sizeof(buf);
+ if (G.got_clen) {
+ if (G.content_len < (off_t)sizeof(buf)) {
+ if ((int)G.content_len <= 0)
+ break;
+ rdsz = (unsigned)G.content_len;
+ }
+ }
+ n = safe_fread(buf, rdsz, dfp);
+ if (n <= 0) {
+ if (ferror(dfp)) {
+ /* perror will not work: ferror doesn't set errno */
+ bb_error_msg_and_die(bb_msg_read_error);
+ }
+ break;
+ }
+ xwrite(output_fd, buf, n);
+#if ENABLE_FEATURE_WGET_STATUSBAR
+ G.transferred += n;
+#endif
+ if (G.got_clen)
+ G.content_len -= n;
+ }
+
+ if (!G.chunked)
+ break;
+
+ safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
+ get_clen:
+ safe_fgets(buf, sizeof(buf), dfp);
+ G.content_len = STRTOOFF(buf, NULL, 16);
+ /* FIXME: error check? */
+ if (G.content_len == 0)
+ break; /* all done! */
+ G.got_clen = 1;
+ }
+
+ if (!(option_mask32 & WGET_OPT_QUIET))
+ progress_meter(0);
+}
int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int wget_main(int argc, char **argv)
+int wget_main(int argc UNUSED_PARAM, char **argv)
{
char buf[512];
struct host_info server, target;
len_and_sockaddr *lsa;
- int status;
- int port;
- int try = 5;
unsigned opt;
- char *str;
- char *proxy = 0;
+ int redir_limit;
+ char *proxy = NULL;
char *dir_prefix = NULL;
#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+ char *post_data;
char *extra_headers = NULL;
llist_t *headers_llist = NULL;
#endif
- FILE *sfp = NULL; /* socket to web/ftp server */
+ FILE *sfp; /* socket to web/ftp server */
FILE *dfp; /* socket to ftp server (data) */
char *fname_out; /* where to direct output (-O) */
- bool got_clen = 0; /* got content-length: from server */
int output_fd = -1;
- bool use_proxy = 1; /* Use proxies if env vars are set */
+ bool use_proxy; /* Use proxies if env vars are set */
const char *proxy_flag = "on"; /* Use proxies if env vars are set */
const char *user_agent = "Wget";/* "User-Agent" header field */
enum {
KEY_content_length = 1, KEY_transfer_encoding, KEY_chunked, KEY_location
};
- enum {
- WGET_OPT_CONTINUE = 0x1,
- WGET_OPT_SPIDER = 0x2,
- WGET_OPT_QUIET = 0x4,
- WGET_OPT_OUTNAME = 0x8,
- WGET_OPT_PREFIX = 0x10,
- WGET_OPT_PROXY = 0x20,
- WGET_OPT_USER_AGENT = 0x40,
- WGET_OPT_PASSIVE = 0x80,
- WGET_OPT_HEADER = 0x100,
- };
#if ENABLE_FEATURE_WGET_LONG_OPTIONS
static const char wget_longopts[] ALIGN1 =
/* name, has_arg, val */
"directory-prefix\0" Required_argument "P"
"proxy\0" Required_argument "Y"
"user-agent\0" Required_argument "U"
+ /* Ignored: */
+ // "tries\0" Required_argument "t"
+ // "timeout\0" Required_argument "T"
+ /* Ignored (we always use PASV): */
"passive-ftp\0" No_argument "\xff"
"header\0" Required_argument "\xfe"
+ "post-data\0" Required_argument "\xfd"
;
#endif
applet_long_options = wget_longopts;
#endif
/* server.allocated = target.allocated = NULL; */
- opt_complementary = "-1" USE_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
- opt = getopt32(argv, "csqO:P:Y:U:",
+ opt_complementary = "-1" IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
+ opt = getopt32(argv, "csqO:P:Y:U:" /*ignored:*/ "t:T:",
&fname_out, &dir_prefix,
- &proxy_flag, &user_agent
- USE_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
+ &proxy_flag, &user_agent,
+ NULL, /* -t RETRIES */
+ NULL /* -T NETWORK_READ_TIMEOUT */
+ IF_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
+ IF_FEATURE_WGET_LONG_OPTIONS(, &post_data)
);
- if (strcmp(proxy_flag, "off") == 0) {
- /* Use the proxy if necessary */
- use_proxy = 0;
- }
#if ENABLE_FEATURE_WGET_LONG_OPTIONS
if (headers_llist) {
int size = 1;
}
extra_headers = cp = xmalloc(size);
while (headers_llist) {
- cp += sprintf(cp, "%s\r\n", headers_llist->data);
- headers_llist = headers_llist->link;
+ cp += sprintf(cp, "%s\r\n", (char*)llist_pop(&headers_llist));
}
}
#endif
+ /* TODO: compat issue: should handle "wget URL1 URL2..." */
+
+ target.user = NULL;
parse_url(argv[optind], &target);
- server.host = target.host;
- server.port = target.port;
/* Use the proxy if necessary */
+ use_proxy = (strcmp(proxy_flag, "off") != 0);
if (use_proxy) {
proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
- if (proxy && *proxy) {
+ if (proxy && proxy[0]) {
parse_url(proxy, &server);
} else {
use_proxy = 0;
}
}
+ if (!use_proxy) {
+ server.port = target.port;
+ if (ENABLE_FEATURE_IPV6) {
+ server.host = xstrdup(target.host);
+ } else {
+ server.host = target.host;
+ }
+ }
+
+ if (ENABLE_FEATURE_IPV6)
+ strip_ipv6_scope_id(target.host);
/* Guess an output filename, if there was no -O FILE */
if (!(opt & WGET_OPT_OUTNAME)) {
}
}
#if ENABLE_FEATURE_WGET_STATUSBAR
- curfile = bb_get_last_path_component_nostrip(fname_out);
+ G.curfile = bb_get_last_path_component_nostrip(fname_out);
#endif
/* Impossible?
if ((opt & WGET_OPT_CONTINUE) && !fname_out)
- bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); */
+ bb_error_msg_and_die("can't specify continue (-c) without a filename (-O)");
+ */
/* Determine where to start transfer */
if (opt & WGET_OPT_CONTINUE) {
output_fd = open(fname_out, O_WRONLY);
if (output_fd >= 0) {
- beg_range = xlseek(output_fd, 0, SEEK_END);
+ G.beg_range = xlseek(output_fd, 0, SEEK_END);
}
/* File doesn't exist. We do not create file here yet.
- We are not sure it exists on remove side */
+ * We are not sure it exists on remove side */
}
- /* We want to do exactly _one_ DNS lookup, since some
- * sites (i.e. ftp.us.debian.org) use round-robin DNS
- * and we want to connect to only one IP... */
+ redir_limit = 5;
+ resolve_lsa:
lsa = xhost2sockaddr(server.host, server.port);
if (!(opt & WGET_OPT_QUIET)) {
- fprintf(stderr, "Connecting to %s (%s)\n", server.host,
- xmalloc_sockaddr2dotted(&lsa->u.sa));
- /* We leak result of xmalloc_sockaddr2dotted */
+ char *s = xmalloc_sockaddr2dotted(&lsa->u.sa);
+ fprintf(stderr, "Connecting to %s (%s)\n", server.host, s);
+ free(s);
}
-
+ establish_session:
if (use_proxy || !target.is_ftp) {
/*
* HTTP session
*/
- do {
- got_clen = 0;
- chunked = 0;
-
- if (!--try)
- bb_error_msg_and_die("too many redirections");
-
- /* Open socket to http server */
- if (sfp) fclose(sfp);
- sfp = open_socket(lsa);
-
- /* Send HTTP request. */
- if (use_proxy) {
- fprintf(sfp, "GET %stp://%s/%s HTTP/1.1\r\n",
- target.is_ftp ? "f" : "ht", target.host,
- target.path);
- } else {
+ char *str;
+ int status;
+
+ /* Open socket to http server */
+ sfp = open_socket(lsa);
+
+ /* Send HTTP request */
+ if (use_proxy) {
+ fprintf(sfp, "GET %stp://%s/%s HTTP/1.1\r\n",
+ target.is_ftp ? "f" : "ht", target.host,
+ target.path);
+ } else {
+ if (opt & WGET_OPT_POST_DATA)
+ fprintf(sfp, "POST /%s HTTP/1.1\r\n", target.path);
+ else
fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
- }
+ }
- fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n",
- target.host, user_agent);
+ fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n",
+ target.host, user_agent);
#if ENABLE_FEATURE_WGET_AUTHENTICATION
- if (target.user) {
- fprintf(sfp, "Proxy-Authorization: Basic %s\r\n"+6,
- base64enc_512(buf, target.user));
- }
- if (use_proxy && server.user) {
- fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
- base64enc_512(buf, server.user));
- }
+ if (target.user) {
+ fprintf(sfp, "Proxy-Authorization: Basic %s\r\n"+6,
+ base64enc_512(buf, target.user));
+ }
+ if (use_proxy && server.user) {
+ fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
+ base64enc_512(buf, server.user));
+ }
#endif
- if (beg_range)
- fprintf(sfp, "Range: bytes=%"OFF_FMT"d-\r\n", beg_range);
+ if (G.beg_range)
+ fprintf(sfp, "Range: bytes=%"OFF_FMT"u-\r\n", G.beg_range);
#if ENABLE_FEATURE_WGET_LONG_OPTIONS
- if (extra_headers)
- fputs(extra_headers, sfp);
+ if (extra_headers)
+ fputs(extra_headers, sfp);
+
+ if (opt & WGET_OPT_POST_DATA) {
+ char *estr = URL_escape(post_data);
+ fprintf(sfp, "Content-Type: application/x-www-form-urlencoded\r\n");
+ fprintf(sfp, "Content-Length: %u\r\n" "\r\n" "%s",
+ (int) strlen(estr), estr);
+ /*fprintf(sfp, "Connection: Keep-Alive\r\n\r\n");*/
+ /*fprintf(sfp, "%s\r\n", estr);*/
+ free(estr);
+ } else
#endif
- fprintf(sfp, "Connection: close\r\n\r\n");
-
- /*
- * Retrieve HTTP response line and check for "200" status code.
- */
- read_response:
- if (fgets(buf, sizeof(buf), sfp) == NULL)
- bb_error_msg_and_die("no response from server");
-
- str = buf;
- str = skip_non_whitespace(str);
- str = skip_whitespace(str);
- // FIXME: no error check
- // xatou wouldn't work: "200 OK"
- status = atoi(str);
- switch (status) {
- case 0:
- case 100:
- while (gethdr(buf, sizeof(buf), sfp /*, &n*/) != NULL)
- /* eat all remaining headers */;
- goto read_response;
- case 200:
- break;
- case 300: /* redirection */
- case 301:
- case 302:
- case 303:
- break;
- case 206:
- if (beg_range)
- break;
- /*FALLTHRU*/
- default:
- /* Show first line only and kill any ESC tricks */
- buf[strcspn(buf, "\n\r\x1b")] = '\0';
- bb_error_msg_and_die("server returned error: %s", buf);
- }
-
- /*
- * Retrieve HTTP headers.
- */
- while ((str = gethdr(buf, sizeof(buf), sfp /*, &n*/)) != NULL) {
- /* gethdr did already convert the "FOO:" string to lowercase */
- smalluint key = index_in_strings(keywords, *&buf) + 1;
- if (key == KEY_content_length) {
- content_len = BB_STRTOOFF(str, NULL, 10);
- if (errno || content_len < 0) {
- bb_error_msg_and_die("content-length %s is garbage", str);
- }
- got_clen = 1;
- continue;
- }
- if (key == KEY_transfer_encoding) {
- if (index_in_strings(keywords, str_tolower(str)) + 1 != KEY_chunked)
- bb_error_msg_and_die("transfer encoding '%s' is not supported", str);
- chunked = got_clen = 1;
- }
- if (key == KEY_location) {
- if (str[0] == '/')
- /* free(target.allocated); */
- target.path = /* target.allocated = */ xstrdup(str+1);
- else {
- parse_url(str, &target);
- if (use_proxy == 0) {
- server.host = target.host;
- server.port = target.port;
- }
- free(lsa);
- lsa = xhost2sockaddr(server.host, server.port);
- break;
- }
- }
- }
- } while (status >= 300);
-
- dfp = sfp;
-
- } else {
-
- /*
- * FTP session
- */
- if (!target.user)
- target.user = xstrdup("anonymous:busybox@");
-
- sfp = open_socket(lsa);
- if (ftpcmd(NULL, NULL, sfp, buf) != 220)
- bb_error_msg_and_die("%s", buf+4);
+ { /* If "Connection:" is needed, document why */
+ fprintf(sfp, /* "Connection: close\r\n" */ "\r\n");
+ }
/*
- * Splitting username:password pair,
- * trying to log in
+ * Retrieve HTTP response line and check for "200" status code.
*/
- str = strchr(target.user, ':');
- if (str)
- *(str++) = '\0';
- switch (ftpcmd("USER ", target.user, sfp, buf)) {
- case 230:
+ read_response:
+ if (fgets(buf, sizeof(buf), sfp) == NULL)
+ bb_error_msg_and_die("no response from server");
+
+ str = buf;
+ str = skip_non_whitespace(str);
+ str = skip_whitespace(str);
+ // FIXME: no error check
+ // xatou wouldn't work: "200 OK"
+ status = atoi(str);
+ switch (status) {
+ case 0:
+ case 100:
+ while (gethdr(buf, sizeof(buf), sfp /*, &n*/) != NULL)
+ /* eat all remaining headers */;
+ goto read_response;
+ case 200:
+/*
+Response 204 doesn't say "null file", it says "metadata
+has changed but data didn't":
+
+"10.2.5 204 No Content
+The server has fulfilled the request but does not need to return
+an entity-body, and might want to return updated metainformation.
+The response MAY include new or updated metainformation in the form
+of entity-headers, which if present SHOULD be associated with
+the requested variant.
+
+If the client is a user agent, it SHOULD NOT change its document
+view from that which caused the request to be sent. This response
+is primarily intended to allow input for actions to take place
+without causing a change to the user agent's active document view,
+although any new or updated metainformation SHOULD be applied
+to the document currently in the user agent's active view.
+
+The 204 response MUST NOT include a message-body, and thus
+is always terminated by the first empty line after the header fields."
+
+However, in real world it was observed that some web servers
+(e.g. Boa/0.94.14rc21) simply use code 204 when file size is zero.
+*/
+ case 204:
break;
- case 331:
- if (ftpcmd("PASS ", str, sfp, buf) == 230)
+ case 300: /* redirection */
+ case 301:
+ case 302:
+ case 303:
+ break;
+ case 206:
+ if (G.beg_range)
break;
- /* FALLTHRU (failed login) */
+ /* fall through */
default:
- bb_error_msg_and_die("ftp login: %s", buf+4);
+ bb_error_msg_and_die("server returned error: %s", sanitize_string(buf));
}
- ftpcmd("TYPE I", NULL, sfp, buf);
-
/*
- * Querying file size
+ * Retrieve HTTP headers.
*/
- if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) {
- content_len = BB_STRTOOFF(buf+4, NULL, 10);
- if (errno || content_len < 0) {
- bb_error_msg_and_die("SIZE value is garbage");
+ while ((str = gethdr(buf, sizeof(buf), sfp /*, &n*/)) != NULL) {
+ /* gethdr converted "FOO:" string to lowercase */
+ smalluint key;
+ /* strip trailing whitespace */
+ char *s = strchrnul(str, '\0') - 1;
+ while (s >= str && (*s == ' ' || *s == '\t')) {
+ *s = '\0';
+ s--;
+ }
+ key = index_in_strings(keywords, buf) + 1;
+ if (key == KEY_content_length) {
+ G.content_len = BB_STRTOOFF(str, NULL, 10);
+ if (G.content_len < 0 || errno) {
+ bb_error_msg_and_die("content-length %s is garbage", sanitize_string(str));
+ }
+ G.got_clen = 1;
+ continue;
+ }
+ if (key == KEY_transfer_encoding) {
+ if (index_in_strings(keywords, str_tolower(str)) + 1 != KEY_chunked)
+ bb_error_msg_and_die("transfer encoding '%s' is not supported", sanitize_string(str));
+ G.chunked = G.got_clen = 1;
+ }
+ if (key == KEY_location && status >= 300) {
+ if (--redir_limit == 0)
+ bb_error_msg_and_die("too many redirections");
+ fclose(sfp);
+ G.got_clen = 0;
+ G.chunked = 0;
+ if (str[0] == '/')
+ /* free(target.allocated); */
+ target.path = /* target.allocated = */ xstrdup(str+1);
+ /* lsa stays the same: it's on the same server */
+ else {
+ parse_url(str, &target);
+ if (!use_proxy) {
+ server.host = target.host;
+ /* strip_ipv6_scope_id(target.host); - no! */
+ /* we assume remote never gives us IPv6 addr with scope id */
+ server.port = target.port;
+ free(lsa);
+ goto resolve_lsa;
+ } /* else: lsa stays the same: we use proxy */
+ }
+ goto establish_session;
}
- got_clen = 1;
}
+// if (status >= 300)
+// bb_error_msg_and_die("bad redirection (no Location: header from server)");
+
+ /* For HTTP, data is pumped over the same connection */
+ dfp = sfp;
+ } else {
/*
- * Entering passive mode
+ * FTP session
*/
- if (ftpcmd("PASV", NULL, sfp, buf) != 227) {
- pasv_error:
- bb_error_msg_and_die("bad response to %s: %s", "PASV", buf);
- }
- // Response is "227 garbageN1,N2,N3,N4,P1,P2[)garbage]
- // Server's IP is N1.N2.N3.N4 (we ignore it)
- // Server's port for data connection is P1*256+P2
- str = strrchr(buf, ')');
- if (str) str[0] = '\0';
- str = strrchr(buf, ',');
- if (!str) goto pasv_error;
- port = xatou_range(str+1, 0, 255);
- *str = '\0';
- str = strrchr(buf, ',');
- if (!str) goto pasv_error;
- port += xatou_range(str+1, 0, 255) * 256;
- set_nport(lsa, htons(port));
- dfp = open_socket(lsa);
-
- if (beg_range) {
- sprintf(buf, "REST %"OFF_FMT"d", beg_range);
- if (ftpcmd(buf, NULL, sfp, buf) == 350)
- content_len -= beg_range;
- }
-
- if (ftpcmd("RETR ", target.path, sfp, buf) > 150)
- bb_error_msg_and_die("bad response to %s: %s", "RETR", buf);
+ sfp = prepare_ftp_session(&dfp, &target, lsa);
}
if (opt & WGET_OPT_SPIDER) {
return EXIT_SUCCESS;
}
- /*
- * Retrieve file
- */
-
- /* Do it before progressmeter (want to have nice error message) */
if (output_fd < 0) {
int o_flags = O_WRONLY | O_CREAT | O_TRUNC | O_EXCL;
/* compat with wget: -O FILE can overwrite */
output_fd = xopen(fname_out, o_flags);
}
- if (!(opt & WGET_OPT_QUIET))
- progressmeter(-1);
-
- if (chunked)
- goto get_clen;
-
- /* Loops only if chunked */
- while (1) {
- while (content_len > 0 || !got_clen) {
- int n;
- unsigned rdsz = sizeof(buf);
-
- if (content_len < sizeof(buf) && (chunked || got_clen))
- rdsz = (unsigned)content_len;
- n = safe_fread(buf, rdsz, dfp);
- if (n <= 0) {
- if (ferror(dfp)) {
- /* perror will not work: ferror doesn't set errno */
- bb_error_msg_and_die(bb_msg_read_error);
- }
- break;
- }
- xwrite(output_fd, buf, n);
-#if ENABLE_FEATURE_WGET_STATUSBAR
- transferred += n;
-#endif
- if (got_clen)
- content_len -= n;
- }
-
- if (!chunked)
- break;
-
- safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
- get_clen:
- safe_fgets(buf, sizeof(buf), dfp);
- content_len = STRTOOFF(buf, NULL, 16);
- /* FIXME: error check? */
- if (content_len == 0)
- break; /* all done! */
- }
-
- if (!(opt & WGET_OPT_QUIET))
- progressmeter(0);
+ retrieve_file_data(dfp, output_fd);
+ xclose(output_fd);
- if ((use_proxy == 0) && target.is_ftp) {
+ if (dfp != sfp) {
+ /* It's ftp. Close it properly */
fclose(dfp);
if (ftpcmd(NULL, NULL, sfp, buf) != 226)
- bb_error_msg_and_die("ftp error: %s", buf+4);
- ftpcmd("QUIT", NULL, sfp, buf);
+ bb_error_msg_and_die("ftp error: %s", sanitize_string(buf+4));
+ /* ftpcmd("QUIT", NULL, sfp, buf); - why bother? */
}
return EXIT_SUCCESS;
projects / oweals / busybox.git / blobdiff