static void parse_url(const char *src_url, struct host_info *h)
{
char *url, *p, *sp;
free(h->allocated);
h->allocated = url = xstrdup(src_url);
if (strncmp(url, "http://", 7) == 0) {
h->port = bb_lookup_port("http", "tcp", 80);
h->host = url + 7;
h->is_ftp = 0;
} else if (strncmp(url, "ftp://", 6) == 0) {
h->port = bb_lookup_port("ftp", "tcp", 21);
h->host = url + 6;
h->is_ftp = 1;
} else
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:
// 'GET /?var=a/b HTTP 1.0'
// and saves 'index.html?var=a%2Fb' (we save 'b')
// wget 'http://busybox.net?login=john@doe':
// request: 'GET /?login=john@doe HTTP/1.0'
// saves: 'index.html?login=john@doe' (we save '?login=john@doe')
// wget 'http://busybox.net#test/test':
// request: 'GET / HTTP/1.0'
// saves: 'index.html' (we save 'test')
//
// We also don't add unique .N suffix if file exists...
sp = strchr(h->host, '/');
p = strchr(h->host, '?'); if (!sp || (p && sp > p)) sp = p;
p = strchr(h->host, '#'); if (!sp || (p && sp > p)) sp = p;
if (!sp) {
h->path = "";
} else if (*sp == '/') {
*sp = '\0';
h->path = sp + 1;
} else { // '#' or '?'
// http://busybox.net?login=john@doe is a valid URL
// memmove converts to:
// http:/busybox.nett?login=john@doe...
memmove(h->host - 1, h->host, sp - h->host);
h->host--;
sp[-1] = '\0';
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, '@');
if (sp != NULL) {
// URL-decode "user:password" string before base64-encoding:
// wget http://test:my%[email protected] should send
// Authorization: Basic dGVzdDpteSBwYXNz
// which decodes to "test:my pass".
// Standard wget and curl do this too.
*sp = '\0';
h->user = percent_decode_in_place(h->host, /*strict:*/ 0);
h->host = sp + 1;
}
sp = h->host;
}
/* basename_from_path() parses hostport_abs_path
* to get name.
* If there are no path segments in abs_path, name is the host.
* Otherwise if the host is NOT idisk.mac.com OR abs_path is
* only one segment, name is the last path segment.
* Otherwise (host is idisk.mac.com AND there are multiple
* path segements), name is the first path segment concatenated
* with the last path segment separated with a dash character.
* name is assumed to be char[MAXNAMLEN].
*/
static int
basename_from_path(const char *hostport_abs_path, char *name, size_t maxlength)
{
int error;
char *path;
char *host;
char *firstPathSegment;
char *lastPathSegment;
int length;
char *colon;
char *slash;
char *firstChar;
char *lastChar;
error = 0;
path = host = firstPathSegment = lastPathSegment = NULL;
/* validate input parameters */
if ( (hostport_abs_path == NULL) || (name == NULL) ) {
error = EINVAL;
goto exit;
}
/* no output name yet */
*name = '\0';
/* get length of input */
length = strlen(hostport_abs_path);
if ( length == 0 ) {
error = EINVAL;
goto exit;
}
/* allocate space for path */
path = malloc(length + 2); /* one extra for slash if needed */
if ( path == NULL ) {
error = ENOMEM;
goto exit;
}
/* and make a private copy of hostport_abs_path*/
strlcpy(path, hostport_abs_path, length + 2);
/* add a trailing slash if needed */
if ( path[length] != '/' ) {
strlcat(path, "/", length + 2);
}
/* find the first colon (if any) and the first slash */
colon = strchr(path, ':');
slash = strchr(path, '/');
/* get the host name */
if ( (colon == NULL) || (colon > slash) ) {
/* if no colon, or the colon is after the slash,
* then there is no port so the host is everything
* up to the slash
*/
host = CopySegment(path, slash);
} else {
/* there is a port so the host is everything
* up to the colon
*/
host = CopySegment(path, colon);
}
/* find first path segment (if any) */
lastChar = slash;
ParsePathSegment(lastChar, &firstChar, &lastChar);
if (firstChar != lastChar) {
/* copy first path segment */
firstPathSegment = CopySegment(firstChar, lastChar);
percent_decode_in_place(firstPathSegment);
/* find last path segment (if any) */
while ( *lastChar != '\0' ) {
ParsePathSegment(lastChar, &firstChar, &lastChar);
if (firstChar != lastChar) {
if ( lastPathSegment != NULL ) {
/* free up the previous lastPathSegment */
free(lastPathSegment);
}
/* copy (new) last path segment */
lastPathSegment = CopySegment(firstChar, lastChar);
}
}
if ( lastPathSegment != NULL ) {
percent_decode_in_place(lastPathSegment);
/* name is lastPathSegment */
if ( (strlen(lastPathSegment) + 1) > MAXNAMLEN ) {
error = ENAMETOOLONG;
goto exit;
}
strlcpy(name, lastPathSegment, maxlength);
} else {
/* no last path segment -- name is firstPathSegment*/
if ( (strlen(firstPathSegment) + 1) > MAXNAMLEN ) {
error = ENAMETOOLONG;
goto exit;
}
strlcpy(name, firstPathSegment, maxlength);
}
} else {
/* no path segments -- name is host */
if ( (strlen(host) + 1) > MAXNAMLEN ) {
error = ENAMETOOLONG;
goto exit;
}
strlcpy(name, host, maxlength);
}
exit:
/* free up any memory and return any errors */
if ( path != NULL ) {
free(path);
}
if ( host != NULL ) {
free(host);
}
if ( firstPathSegment != NULL ) {
free(firstPathSegment);
}
if ( lastPathSegment != NULL ) {
free(lastPathSegment);
}
return ( error );
}
