mirror of
https://github.com/mozilla/gecko-dev.git
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7c0ae251cd
MozReview-Commit-ID: FFxP4aMCbOL --HG-- extra : amend_source : 3aec108430b11048f47ffe19d5da7ac5034770a9
702 lines
22 KiB
C++
702 lines
22 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <string.h>
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#include "mozilla/RangedPtr.h"
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#include "nsURLParsers.h"
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#include "nsURLHelper.h"
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#include "nsString.h"
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#include "nsCRT.h"
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using namespace mozilla;
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//----------------------------------------------------------------------------
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static uint32_t
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CountConsecutiveSlashes(const char *str, int32_t len)
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{
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RangedPtr<const char> p(str, len);
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uint32_t count = 0;
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while (len-- && *p++ == '/') ++count;
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return count;
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}
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//----------------------------------------------------------------------------
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// nsBaseURLParser implementation
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//----------------------------------------------------------------------------
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NS_IMPL_ISUPPORTS(nsAuthURLParser, nsIURLParser)
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NS_IMPL_ISUPPORTS(nsNoAuthURLParser, nsIURLParser)
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#define SET_RESULT(component, pos, len) \
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PR_BEGIN_MACRO \
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if (component ## Pos) \
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*component ## Pos = uint32_t(pos); \
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if (component ## Len) \
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*component ## Len = int32_t(len); \
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PR_END_MACRO
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#define OFFSET_RESULT(component, offset) \
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PR_BEGIN_MACRO \
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if (component ## Pos) \
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*component ## Pos += offset; \
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PR_END_MACRO
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NS_IMETHODIMP
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nsBaseURLParser::ParseURL(const char *spec, int32_t specLen,
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uint32_t *schemePos, int32_t *schemeLen,
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uint32_t *authorityPos, int32_t *authorityLen,
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uint32_t *pathPos, int32_t *pathLen)
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{
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if (NS_WARN_IF(!spec)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (specLen < 0)
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specLen = strlen(spec);
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const char *stop = nullptr;
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const char *colon = nullptr;
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const char *slash = nullptr;
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const char *p = spec;
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uint32_t offset = 0;
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int32_t len = specLen;
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// skip leading whitespace
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while (*p == ' ' || *p == '\n' || *p == '\r' || *p == '\t') {
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spec++;
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specLen--;
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offset++;
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p++;
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len--;
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}
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for (; len && *p && !colon && !slash; ++p, --len) {
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switch (*p) {
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case ':':
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if (!colon)
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colon = p;
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break;
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case '/': // start of filepath
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case '?': // start of query
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case '#': // start of ref
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if (!slash)
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slash = p;
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break;
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case '@': // username@hostname
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case '[': // start of IPv6 address literal
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if (!stop)
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stop = p;
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break;
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}
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}
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// disregard the first colon if it follows an '@' or a '['
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if (colon && stop && colon > stop)
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colon = nullptr;
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// if the spec only contained whitespace ...
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if (specLen == 0) {
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SET_RESULT(scheme, 0, -1);
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SET_RESULT(authority, 0, 0);
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SET_RESULT(path, 0, 0);
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return NS_OK;
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}
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// ignore trailing whitespace and control characters
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for (p = spec + specLen - 1; ((unsigned char) *p <= ' ') && (p != spec); --p)
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;
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specLen = p - spec + 1;
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if (colon && (colon < slash || !slash)) {
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//
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// spec = <scheme>:/<the-rest>
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//
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// or
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//
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// spec = <scheme>:<authority>
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// spec = <scheme>:<path-no-slashes>
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//
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if (!net_IsValidScheme(spec, colon - spec) || (*(colon+1) == ':')) {
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return NS_ERROR_MALFORMED_URI;
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}
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SET_RESULT(scheme, offset, colon - spec);
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if (authorityLen || pathLen) {
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uint32_t schemeLen = colon + 1 - spec;
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offset += schemeLen;
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ParseAfterScheme(colon + 1, specLen - schemeLen,
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authorityPos, authorityLen,
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pathPos, pathLen);
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OFFSET_RESULT(authority, offset);
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OFFSET_RESULT(path, offset);
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}
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}
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else {
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//
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// spec = <authority-no-port-or-password>/<path>
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// spec = <path>
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//
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// or
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//
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// spec = <authority-no-port-or-password>/<path-with-colon>
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// spec = <path-with-colon>
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//
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// or
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//
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// spec = <authority-no-port-or-password>
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// spec = <path-no-slashes-or-colon>
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//
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SET_RESULT(scheme, 0, -1);
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if (authorityLen || pathLen) {
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ParseAfterScheme(spec, specLen,
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authorityPos, authorityLen,
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pathPos, pathLen);
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OFFSET_RESULT(authority, offset);
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OFFSET_RESULT(path, offset);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseURLParser::ParseAuthority(const char *auth, int32_t authLen,
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uint32_t *usernamePos, int32_t *usernameLen,
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uint32_t *passwordPos, int32_t *passwordLen,
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uint32_t *hostnamePos, int32_t *hostnameLen,
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int32_t *port)
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{
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if (NS_WARN_IF(!auth)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (authLen < 0)
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authLen = strlen(auth);
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SET_RESULT(username, 0, -1);
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SET_RESULT(password, 0, -1);
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SET_RESULT(hostname, 0, authLen);
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if (port)
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*port = -1;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseURLParser::ParseUserInfo(const char *userinfo, int32_t userinfoLen,
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uint32_t *usernamePos, int32_t *usernameLen,
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uint32_t *passwordPos, int32_t *passwordLen)
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{
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SET_RESULT(username, 0, -1);
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SET_RESULT(password, 0, -1);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseURLParser::ParseServerInfo(const char *serverinfo, int32_t serverinfoLen,
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uint32_t *hostnamePos, int32_t *hostnameLen,
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int32_t *port)
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{
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SET_RESULT(hostname, 0, -1);
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if (port)
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*port = -1;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseURLParser::ParsePath(const char *path, int32_t pathLen,
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uint32_t *filepathPos, int32_t *filepathLen,
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uint32_t *queryPos, int32_t *queryLen,
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uint32_t *refPos, int32_t *refLen)
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{
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if (NS_WARN_IF(!path)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (pathLen < 0)
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pathLen = strlen(path);
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// path = [/]<segment1>/<segment2>/<...>/<segmentN>?<query>#<ref>
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// XXX PL_strnpbrk would be nice, but it's buggy
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// search for first occurrence of either ? or #
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const char *query_beg = 0, *query_end = 0;
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const char *ref_beg = 0;
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const char *p = 0;
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for (p = path; p < path + pathLen; ++p) {
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// only match the query string if it precedes the reference fragment
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if (!ref_beg && !query_beg && *p == '?')
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query_beg = p + 1;
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else if (*p == '#') {
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ref_beg = p + 1;
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if (query_beg)
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query_end = p;
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break;
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}
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}
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if (query_beg) {
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if (query_end)
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SET_RESULT(query, query_beg - path, query_end - query_beg);
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else
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SET_RESULT(query, query_beg - path, pathLen - (query_beg - path));
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}
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else
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SET_RESULT(query, 0, -1);
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if (ref_beg)
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SET_RESULT(ref, ref_beg - path, pathLen - (ref_beg - path));
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else
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SET_RESULT(ref, 0, -1);
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const char *end;
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if (query_beg)
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end = query_beg - 1;
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else if (ref_beg)
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end = ref_beg - 1;
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else
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end = path + pathLen;
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// an empty file path is no file path
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if (end != path)
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SET_RESULT(filepath, 0, end - path);
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else
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SET_RESULT(filepath, 0, -1);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseURLParser::ParseFilePath(const char *filepath, int32_t filepathLen,
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uint32_t *directoryPos, int32_t *directoryLen,
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uint32_t *basenamePos, int32_t *basenameLen,
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uint32_t *extensionPos, int32_t *extensionLen)
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{
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if (NS_WARN_IF(!filepath)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (filepathLen < 0)
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filepathLen = strlen(filepath);
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if (filepathLen == 0) {
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SET_RESULT(directory, 0, -1);
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SET_RESULT(basename, 0, 0); // assume a zero length file basename
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SET_RESULT(extension, 0, -1);
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return NS_OK;
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}
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const char *p;
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const char *end = filepath + filepathLen;
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// search backwards for filename
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for (p = end - 1; *p != '/' && p > filepath; --p)
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;
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if (*p == '/') {
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// catch /.. and /.
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if ((p+1 < end && *(p+1) == '.') &&
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(p+2 == end || (*(p+2) == '.' && p+3 == end)))
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p = end - 1;
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// filepath = <directory><filename>.<extension>
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SET_RESULT(directory, 0, p - filepath + 1);
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ParseFileName(p + 1, end - (p + 1),
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basenamePos, basenameLen,
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extensionPos, extensionLen);
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OFFSET_RESULT(basename, p + 1 - filepath);
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OFFSET_RESULT(extension, p + 1 - filepath);
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}
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else {
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// filepath = <filename>.<extension>
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SET_RESULT(directory, 0, -1);
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ParseFileName(filepath, filepathLen,
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basenamePos, basenameLen,
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extensionPos, extensionLen);
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}
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return NS_OK;
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}
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nsresult
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nsBaseURLParser::ParseFileName(const char *filename, int32_t filenameLen,
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uint32_t *basenamePos, int32_t *basenameLen,
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uint32_t *extensionPos, int32_t *extensionLen)
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{
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if (NS_WARN_IF(!filename)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (filenameLen < 0)
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filenameLen = strlen(filename);
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// no extension if filename ends with a '.'
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if (filename[filenameLen-1] != '.') {
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// ignore '.' at the beginning
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for (const char *p = filename + filenameLen - 1; p > filename; --p) {
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if (*p == '.') {
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// filename = <basename.extension>
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SET_RESULT(basename, 0, p - filename);
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SET_RESULT(extension, p + 1 - filename, filenameLen - (p - filename + 1));
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return NS_OK;
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}
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}
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}
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// filename = <basename>
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SET_RESULT(basename, 0, filenameLen);
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SET_RESULT(extension, 0, -1);
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return NS_OK;
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}
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//----------------------------------------------------------------------------
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// nsNoAuthURLParser implementation
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//----------------------------------------------------------------------------
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NS_IMETHODIMP
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nsNoAuthURLParser::ParseAuthority(const char *auth, int32_t authLen,
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uint32_t *usernamePos, int32_t *usernameLen,
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uint32_t *passwordPos, int32_t *passwordLen,
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uint32_t *hostnamePos, int32_t *hostnameLen,
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int32_t *port)
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{
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NS_NOTREACHED("Shouldn't parse auth in a NoAuthURL!");
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return NS_ERROR_UNEXPECTED;
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}
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void
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nsNoAuthURLParser::ParseAfterScheme(const char *spec, int32_t specLen,
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uint32_t *authPos, int32_t *authLen,
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uint32_t *pathPos, int32_t *pathLen)
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{
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NS_PRECONDITION(specLen >= 0, "unexpected");
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// everything is the path
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uint32_t pos = 0;
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switch (CountConsecutiveSlashes(spec, specLen)) {
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case 0:
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case 1:
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break;
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case 2:
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{
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const char *p = nullptr;
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if (specLen > 2) {
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// looks like there is an authority section
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// if the authority looks like a drive number then we
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// really want to treat it as part of the path
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// [a-zA-Z][:|]{/\}
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// i.e one of: c: c:\foo c:/foo c| c|\foo c|/foo
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if ((specLen > 3) && (spec[3] == ':' || spec[3] == '|') &&
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nsCRT::IsAsciiAlpha(spec[2]) &&
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((specLen == 4) || (spec[4] == '/') || (spec[4] == '\\'))) {
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pos = 1;
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break;
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}
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// Ignore apparent authority; path is everything after it
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for (p = spec + 2; p < spec + specLen; ++p) {
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if (*p == '/' || *p == '?' || *p == '#')
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break;
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}
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}
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SET_RESULT(auth, 0, -1);
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if (p && p != spec+specLen)
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SET_RESULT(path, p - spec, specLen - (p - spec));
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else
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SET_RESULT(path, 0, -1);
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return;
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}
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default:
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pos = 2;
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break;
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}
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SET_RESULT(auth, pos, 0);
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SET_RESULT(path, pos, specLen - pos);
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}
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#if defined(XP_WIN)
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NS_IMETHODIMP
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nsNoAuthURLParser::ParseFilePath(const char *filepath, int32_t filepathLen,
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uint32_t *directoryPos, int32_t *directoryLen,
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uint32_t *basenamePos, int32_t *basenameLen,
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uint32_t *extensionPos, int32_t *extensionLen)
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{
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if (NS_WARN_IF(!filepath)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (filepathLen < 0)
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filepathLen = strlen(filepath);
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// look for a filepath consisting of only a drive number, which may or
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// may not have a leading slash.
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if (filepathLen > 1 && filepathLen < 4) {
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const char *end = filepath + filepathLen;
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const char *p = filepath;
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if (*p == '/')
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p++;
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if ((end-p == 2) && (p[1]==':' || p[1]=='|') && nsCRT::IsAsciiAlpha(*p)) {
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// filepath = <drive-number>:
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SET_RESULT(directory, 0, filepathLen);
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SET_RESULT(basename, 0, -1);
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SET_RESULT(extension, 0, -1);
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return NS_OK;
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}
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}
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// otherwise fallback on common implementation
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return nsBaseURLParser::ParseFilePath(filepath, filepathLen,
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directoryPos, directoryLen,
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basenamePos, basenameLen,
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extensionPos, extensionLen);
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}
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#endif
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//----------------------------------------------------------------------------
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// nsAuthURLParser implementation
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//----------------------------------------------------------------------------
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NS_IMETHODIMP
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nsAuthURLParser::ParseAuthority(const char *auth, int32_t authLen,
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uint32_t *usernamePos, int32_t *usernameLen,
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uint32_t *passwordPos, int32_t *passwordLen,
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uint32_t *hostnamePos, int32_t *hostnameLen,
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int32_t *port)
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{
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nsresult rv;
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if (NS_WARN_IF(!auth)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (authLen < 0)
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authLen = strlen(auth);
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if (authLen == 0) {
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SET_RESULT(username, 0, -1);
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SET_RESULT(password, 0, -1);
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SET_RESULT(hostname, 0, 0);
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if (port)
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*port = -1;
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return NS_OK;
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}
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// search backwards for @
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const char *p = auth + authLen - 1;
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for (; (*p != '@') && (p > auth); --p) {
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continue;
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}
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if ( *p == '@' ) {
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// auth = <user-info@server-info>
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rv = ParseUserInfo(auth, p - auth,
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usernamePos, usernameLen,
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passwordPos, passwordLen);
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if (NS_FAILED(rv)) return rv;
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rv = ParseServerInfo(p + 1, authLen - (p - auth + 1),
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hostnamePos, hostnameLen,
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port);
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if (NS_FAILED(rv)) return rv;
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OFFSET_RESULT(hostname, p + 1 - auth);
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// malformed if has a username or password
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// but no host info, such as: http://u:p@/
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if ((usernamePos || passwordPos) && (!hostnamePos || !*hostnameLen)) {
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return NS_ERROR_MALFORMED_URI;
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}
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}
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else {
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// auth = <server-info>
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SET_RESULT(username, 0, -1);
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SET_RESULT(password, 0, -1);
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rv = ParseServerInfo(auth, authLen,
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hostnamePos, hostnameLen,
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port);
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if (NS_FAILED(rv)) return rv;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsAuthURLParser::ParseUserInfo(const char *userinfo, int32_t userinfoLen,
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uint32_t *usernamePos, int32_t *usernameLen,
|
|
uint32_t *passwordPos, int32_t *passwordLen)
|
|
{
|
|
if (NS_WARN_IF(!userinfo)) {
|
|
return NS_ERROR_INVALID_POINTER;
|
|
}
|
|
|
|
if (userinfoLen < 0)
|
|
userinfoLen = strlen(userinfo);
|
|
|
|
if (userinfoLen == 0) {
|
|
SET_RESULT(username, 0, -1);
|
|
SET_RESULT(password, 0, -1);
|
|
return NS_OK;
|
|
}
|
|
|
|
const char *p = (const char *) memchr(userinfo, ':', userinfoLen);
|
|
if (p) {
|
|
// userinfo = <username:password>
|
|
if (p == userinfo) {
|
|
// must have a username!
|
|
return NS_ERROR_MALFORMED_URI;
|
|
}
|
|
SET_RESULT(username, 0, p - userinfo);
|
|
SET_RESULT(password, p - userinfo + 1, userinfoLen - (p - userinfo + 1));
|
|
}
|
|
else {
|
|
// userinfo = <username>
|
|
SET_RESULT(username, 0, userinfoLen);
|
|
SET_RESULT(password, 0, -1);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsAuthURLParser::ParseServerInfo(const char *serverinfo, int32_t serverinfoLen,
|
|
uint32_t *hostnamePos, int32_t *hostnameLen,
|
|
int32_t *port)
|
|
{
|
|
if (NS_WARN_IF(!serverinfo)) {
|
|
return NS_ERROR_INVALID_POINTER;
|
|
}
|
|
|
|
if (serverinfoLen < 0)
|
|
serverinfoLen = strlen(serverinfo);
|
|
|
|
if (serverinfoLen == 0) {
|
|
SET_RESULT(hostname, 0, 0);
|
|
if (port)
|
|
*port = -1;
|
|
return NS_OK;
|
|
}
|
|
|
|
// search backwards for a ':' but stop on ']' (IPv6 address literal
|
|
// delimiter). check for illegal characters in the hostname.
|
|
const char *p = serverinfo + serverinfoLen - 1;
|
|
const char *colon = nullptr, *bracket = nullptr;
|
|
for (; p > serverinfo; --p) {
|
|
switch (*p) {
|
|
case ']':
|
|
bracket = p;
|
|
break;
|
|
case ':':
|
|
if (bracket == nullptr)
|
|
colon = p;
|
|
break;
|
|
case ' ':
|
|
// hostname must not contain a space
|
|
return NS_ERROR_MALFORMED_URI;
|
|
}
|
|
}
|
|
|
|
if (colon) {
|
|
// serverinfo = <hostname:port>
|
|
SET_RESULT(hostname, 0, colon - serverinfo);
|
|
if (port) {
|
|
// XXX unfortunately ToInteger is not defined for substrings
|
|
nsAutoCString buf(colon+1, serverinfoLen - (colon + 1 - serverinfo));
|
|
if (buf.Length() == 0) {
|
|
*port = -1;
|
|
}
|
|
else {
|
|
const char* nondigit = NS_strspnp("0123456789", buf.get());
|
|
if (nondigit && *nondigit)
|
|
return NS_ERROR_MALFORMED_URI;
|
|
|
|
nsresult err;
|
|
*port = buf.ToInteger(&err);
|
|
if (NS_FAILED(err) || *port < 0 || *port > std::numeric_limits<uint16_t>::max())
|
|
return NS_ERROR_MALFORMED_URI;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// serverinfo = <hostname>
|
|
SET_RESULT(hostname, 0, serverinfoLen);
|
|
if (port)
|
|
*port = -1;
|
|
}
|
|
|
|
// In case of IPv6 address check its validity
|
|
if (*hostnameLen > 1 && *(serverinfo + *hostnamePos) == '[' &&
|
|
*(serverinfo + *hostnamePos + *hostnameLen - 1) == ']' &&
|
|
!net_IsValidIPv6Addr(serverinfo + *hostnamePos + 1, *hostnameLen - 2))
|
|
return NS_ERROR_MALFORMED_URI;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsAuthURLParser::ParseAfterScheme(const char *spec, int32_t specLen,
|
|
uint32_t *authPos, int32_t *authLen,
|
|
uint32_t *pathPos, int32_t *pathLen)
|
|
{
|
|
NS_PRECONDITION(specLen >= 0, "unexpected");
|
|
|
|
uint32_t nslash = CountConsecutiveSlashes(spec, specLen);
|
|
|
|
// search for the end of the authority section
|
|
const char *end = spec + specLen;
|
|
const char *p;
|
|
for (p = spec + nslash; p < end; ++p) {
|
|
if (*p == '/' || *p == '?' || *p == '#')
|
|
break;
|
|
}
|
|
if (p < end) {
|
|
// spec = [/]<auth><path>
|
|
SET_RESULT(auth, nslash, p - (spec + nslash));
|
|
SET_RESULT(path, p - spec, specLen - (p - spec));
|
|
}
|
|
else {
|
|
// spec = [/]<auth>
|
|
SET_RESULT(auth, nslash, specLen - nslash);
|
|
SET_RESULT(path, 0, -1);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
// nsStdURLParser implementation
|
|
//----------------------------------------------------------------------------
|
|
|
|
void
|
|
nsStdURLParser::ParseAfterScheme(const char *spec, int32_t specLen,
|
|
uint32_t *authPos, int32_t *authLen,
|
|
uint32_t *pathPos, int32_t *pathLen)
|
|
{
|
|
NS_PRECONDITION(specLen >= 0, "unexpected");
|
|
|
|
uint32_t nslash = CountConsecutiveSlashes(spec, specLen);
|
|
|
|
// search for the end of the authority section
|
|
const char *end = spec + specLen;
|
|
const char *p;
|
|
for (p = spec + nslash; p < end; ++p) {
|
|
if (strchr("/?#;", *p))
|
|
break;
|
|
}
|
|
switch (nslash) {
|
|
case 0:
|
|
case 2:
|
|
if (p < end) {
|
|
// spec = (//)<auth><path>
|
|
SET_RESULT(auth, nslash, p - (spec + nslash));
|
|
SET_RESULT(path, p - spec, specLen - (p - spec));
|
|
}
|
|
else {
|
|
// spec = (//)<auth>
|
|
SET_RESULT(auth, nslash, specLen - nslash);
|
|
SET_RESULT(path, 0, -1);
|
|
}
|
|
break;
|
|
case 1:
|
|
// spec = /<path>
|
|
SET_RESULT(auth, 0, -1);
|
|
SET_RESULT(path, 0, specLen);
|
|
break;
|
|
default:
|
|
// spec = ///[/]<path>
|
|
SET_RESULT(auth, 2, 0);
|
|
SET_RESULT(path, 2, specLen - 2);
|
|
}
|
|
}
|