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-rw-r--r--server/util_uri.c359
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diff --git a/server/util_uri.c b/server/util_uri.c
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-/* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2000-2001 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
- * ITS 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.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- * Portions of this software are based upon public domain software
- * originally written at the National Center for Supercomputing Applications,
- * University of Illinois, Urbana-Champaign.
- */
-
-/*
- * util_uri.c: URI related utility things
- *
- */
-
-#include "apr.h"
-#include "apr_strings.h"
-
-#define APR_WANT_STRFUNC
-#include "apr_want.h"
-
-#include "ap_config.h"
-#include "httpd.h"
-#include "http_log.h"
-#include "util_uri.h"
-
-/* Some WWW schemes and their default ports; this is basically /etc/services */
-/* This will become global when the protocol abstraction comes */
-/* As the schemes are searched by a linear search, */
-/* they are sorted by their expected frequency */
-static schemes_t schemes[] =
-{
- {"http", DEFAULT_HTTP_PORT},
- {"ftp", DEFAULT_FTP_PORT},
- {"https", DEFAULT_HTTPS_PORT},
- {"gopher", DEFAULT_GOPHER_PORT},
- {"wais", DEFAULT_WAIS_PORT},
- {"nntp", DEFAULT_NNTP_PORT},
- {"snews", DEFAULT_SNEWS_PORT},
- {"prospero", DEFAULT_PROSPERO_PORT},
- { NULL, 0xFFFF } /* unknown port */
-};
-
-
-AP_DECLARE(apr_port_t) ap_default_port_for_scheme(const char *scheme_str)
-{
- schemes_t *scheme;
-
- for (scheme = schemes; scheme->name != NULL; ++scheme)
- if (strcasecmp(scheme_str, scheme->name) == 0)
- return scheme->default_port;
-
- return 0;
-}
-
-AP_DECLARE(apr_port_t) ap_default_port_for_request(const request_rec *r)
-{
- return (r->parsed_uri.scheme)
- ? ap_default_port_for_scheme(r->parsed_uri.scheme)
- : 0;
-}
-
-/* Unparse a uri_components structure to an URI string.
- * Optionally suppress the password for security reasons.
- */
-AP_DECLARE(char *) ap_unparse_uri_components(apr_pool_t *p, const uri_components *uptr, unsigned flags)
-{
- char *ret = "";
-
- /* If suppressing the site part, omit both user name & scheme://hostname */
- if (!(flags & UNP_OMITSITEPART)) {
-
- /* Construct a "user:password@" string, honoring the passed UNP_ flags: */
- if (uptr->user||uptr->password)
- ret = apr_pstrcat (p,
- (uptr->user && !(flags & UNP_OMITUSER)) ? uptr->user : "",
- (uptr->password && !(flags & UNP_OMITPASSWORD)) ? ":" : "",
- (uptr->password && !(flags & UNP_OMITPASSWORD))
- ? ((flags & UNP_REVEALPASSWORD) ? uptr->password : "XXXXXXXX")
- : "",
- "@", NULL);
-
- /* Construct scheme://site string */
- if (uptr->hostname) {
- int is_default_port;
-
- is_default_port =
- (uptr->port_str == NULL ||
- uptr->port == 0 ||
- uptr->port == ap_default_port_for_scheme(uptr->scheme));
-
- ret = apr_pstrcat (p,
- uptr->scheme, "://", ret,
- uptr->hostname ? uptr->hostname : "",
- is_default_port ? "" : ":",
- is_default_port ? "" : uptr->port_str,
- NULL);
- }
- }
-
- /* Should we suppress all path info? */
- if (!(flags & UNP_OMITPATHINFO)) {
- /* Append path, query and fragment strings: */
- ret = apr_pstrcat (p,
- ret,
- uptr->path ? uptr->path : "",
- (uptr->query && !(flags & UNP_OMITQUERY)) ? "?" : "",
- (uptr->query && !(flags & UNP_OMITQUERY)) ? uptr->query : "",
- (uptr->fragment && !(flags & UNP_OMITQUERY)) ? "#" : NULL,
- (uptr->fragment && !(flags & UNP_OMITQUERY)) ? uptr->fragment : NULL,
- NULL);
- }
- return ret;
-}
-
-/* Here is the hand-optimized parse_uri_components(). There are some wild
- * tricks we could pull in assembly language that we don't pull here... like we
- * can do word-at-time scans for delimiter characters using the same technique
- * that fast memchr()s use. But that would be way non-portable. -djg
- */
-
-/* We have a apr_table_t that we can index by character and it tells us if the
- * character is one of the interesting delimiters. Note that we even get
- * compares for NUL for free -- it's just another delimiter.
- */
-
-#define T_COLON 0x01 /* ':' */
-#define T_SLASH 0x02 /* '/' */
-#define T_QUESTION 0x04 /* '?' */
-#define T_HASH 0x08 /* '#' */
-#define T_NUL 0x80 /* '\0' */
-
-/* the uri_delims.h file is autogenerated by gen_uri_delims.c */
-#include "uri_delims.h"
-
-/* it works like this:
- if (uri_delims[ch] & NOTEND_foobar) {
- then we're not at a delimiter for foobar
- }
-*/
-
-/* Note that we optimize the scheme scanning here, we cheat and let the
- * compiler know that it doesn't have to do the & masking.
- */
-#define NOTEND_SCHEME (0xff)
-#define NOTEND_HOSTINFO (T_SLASH | T_QUESTION | T_HASH | T_NUL)
-#define NOTEND_PATH (T_QUESTION | T_HASH | T_NUL)
-
-/* parse_uri_components():
- * Parse a given URI, fill in all supplied fields of a uri_components
- * structure. This eliminates the necessity of extracting host, port,
- * path, query info repeatedly in the modules.
- * Side effects:
- * - fills in fields of uri_components *uptr
- * - none on any of the r->* fields
- */
-AP_DECLARE(int) ap_parse_uri_components(apr_pool_t *p, const char *uri, uri_components *uptr)
-{
- const char *s;
- const char *s1;
- const char *hostinfo;
- char *endstr;
- int port;
-
- /* Initialize the structure. parse_uri() and parse_uri_components()
- * can be called more than once per request.
- */
- memset (uptr, '\0', sizeof(*uptr));
- uptr->is_initialized = 1;
-
- /* We assume the processor has a branch predictor like most --
- * it assumes forward branches are untaken and backwards are taken. That's
- * the reason for the gotos. -djg
- */
- if (uri[0] == '/') {
-deal_with_path:
- /* we expect uri to point to first character of path ... remember
- * that the path could be empty -- http://foobar?query for example
- */
- s = uri;
- while ((uri_delims[*(unsigned char *)s] & NOTEND_PATH) == 0) {
- ++s;
- }
- if (s != uri) {
- uptr->path = apr_pstrndup(p, uri, s - uri);
- }
- if (*s == 0) {
- return HTTP_OK;
- }
- if (*s == '?') {
- ++s;
- s1 = ap_strchr_c(s, '#');
- if (s1) {
- uptr->fragment = apr_pstrdup(p, s1 + 1);
- uptr->query = apr_pstrndup(p, s, s1 - s);
- }
- else {
- uptr->query = apr_pstrdup(p, s);
- }
- return HTTP_OK;
- }
- /* otherwise it's a fragment */
- uptr->fragment = apr_pstrdup(p, s + 1);
- return HTTP_OK;
- }
-
- /* find the scheme: */
- s = uri;
- while ((uri_delims[*(unsigned char *)s] & NOTEND_SCHEME) == 0) {
- ++s;
- }
- /* scheme must be non-empty and followed by :// */
- if (s == uri || s[0] != ':' || s[1] != '/' || s[2] != '/') {
- goto deal_with_path; /* backwards predicted taken! */
- }
-
- uptr->scheme = apr_pstrndup(p, uri, s - uri);
- s += 3;
- hostinfo = s;
- while ((uri_delims[*(unsigned char *)s] & NOTEND_HOSTINFO) == 0) {
- ++s;
- }
- uri = s; /* whatever follows hostinfo is start of uri */
- uptr->hostinfo = apr_pstrndup(p, hostinfo, uri - hostinfo);
-
- /* If there's a username:password@host:port, the @ we want is the last @...
- * too bad there's no memrchr()... For the C purists, note that hostinfo
- * is definately not the first character of the original uri so therefore
- * &hostinfo[-1] < &hostinfo[0] ... and this loop is valid C.
- */
- do {
- --s;
- } while (s >= hostinfo && *s != '@');
- if (s < hostinfo) {
- /* again we want the common case to be fall through */
-deal_with_host:
- /* We expect hostinfo to point to the first character of
- * the hostname. If there's a port it is the first colon.
- */
- s = memchr(hostinfo, ':', uri - hostinfo);
- if (s == NULL) {
- /* we expect the common case to have no port */
- uptr->hostname = apr_pstrndup(p, hostinfo, uri - hostinfo);
- goto deal_with_path;
- }
- uptr->hostname = apr_pstrndup(p, hostinfo, s - hostinfo);
- ++s;
- uptr->port_str = apr_pstrndup(p, s, uri - s);
- if (uri != s) {
- port = strtol(uptr->port_str, &endstr, 10);
- uptr->port = port;
- if (*endstr == '\0') {
- goto deal_with_path;
- }
- /* Invalid characters after ':' found */
- return HTTP_BAD_REQUEST;
- }
- uptr->port = ap_default_port_for_scheme(uptr->scheme);
- goto deal_with_path;
- }
-
- /* first colon delimits username:password */
- s1 = memchr(hostinfo, ':', s - hostinfo);
- if (s1) {
- uptr->user = apr_pstrndup(p, hostinfo, s1 - hostinfo);
- ++s1;
- uptr->password = apr_pstrndup(p, s1, s - s1);
- }
- else {
- uptr->user = apr_pstrndup(p, hostinfo, s - hostinfo);
- }
- hostinfo = s + 1;
- goto deal_with_host;
-}
-
-/* Special case for CONNECT parsing: it comes with the hostinfo part only */
-/* See the INTERNET-DRAFT document "Tunneling SSL Through a WWW Proxy"
- * currently at http://www.mcom.com/newsref/std/tunneling_ssl.html
- * for the format of the "CONNECT host:port HTTP/1.0" request
- */
-AP_DECLARE(int) ap_parse_hostinfo_components(apr_pool_t *p, const char *hostinfo, uri_components *uptr)
-{
- const char *s;
- char *endstr;
-
- /* Initialize the structure. parse_uri() and parse_uri_components()
- * can be called more than once per request.
- */
- memset (uptr, '\0', sizeof(*uptr));
- uptr->is_initialized = 1;
- uptr->hostinfo = apr_pstrdup(p, hostinfo);
-
- /* We expect hostinfo to point to the first character of
- * the hostname. There must be a port, separated by a colon
- */
- s = ap_strchr_c(hostinfo, ':');
- if (s == NULL) {
- return HTTP_BAD_REQUEST;
- }
- uptr->hostname = apr_pstrndup(p, hostinfo, s - hostinfo);
- ++s;
- uptr->port_str = apr_pstrdup(p, s);
- if (*s != '\0') {
- uptr->port = (unsigned short) strtol(uptr->port_str, &endstr, 10);
- if (*endstr == '\0') {
- return HTTP_OK;
- }
- /* Invalid characters after ':' found */
- }
- return HTTP_BAD_REQUEST;
-}