mirror of
https://github.com/mozilla/gecko-dev.git
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645 lines
20 KiB
C++
645 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "mozilla/TextUtils.h"
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#include "nsCRTGlue.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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using namespace mozilla;
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//----------------------------------------------------------------------------
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static uint32_t CountConsecutiveSlashes(const char* str, int32_t len) {
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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) *component##Pos = uint32_t(pos); \
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if (component##Len) *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) *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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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) 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) 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) 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) 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) 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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}
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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(nsDependentCSubstring(spec, colon - spec))) {
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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, authorityPos,
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authorityLen, 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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} 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, authorityPos, authorityLen, pathPos,
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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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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) 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) *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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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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SET_RESULT(hostname, 0, -1);
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if (port) *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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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) 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 = nullptr, *query_end = nullptr;
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const char* ref_beg = nullptr;
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const char* p = nullptr;
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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) 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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}
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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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}
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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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}
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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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}
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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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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) 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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}
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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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}
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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), basenamePos, basenameLen, extensionPos,
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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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} else {
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// filepath = <filename>.<extension>
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SET_RESULT(directory, 0, -1);
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ParseFileName(filepath, filepathLen, basenamePos, basenameLen, extensionPos,
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extensionLen);
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}
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return NS_OK;
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}
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nsresult nsBaseURLParser::ParseFileName(
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const char* filename, int32_t filenameLen, uint32_t* basenamePos,
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int32_t* basenameLen, uint32_t* extensionPos, int32_t* extensionLen) {
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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) 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,
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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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MOZ_ASSERT_UNREACHABLE("Shouldn't parse auth in a NoAuthURL!");
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return NS_ERROR_UNEXPECTED;
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}
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void 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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MOZ_ASSERT(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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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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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 == '#') 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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}
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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,
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int32_t* extensionLen) {
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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) 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 == '/') p++;
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if ((end - p == 2) && (p[1] == ':' || p[1] == '|') && 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, directoryPos,
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directoryLen, 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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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) 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) *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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}
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if (*p == '@') {
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// auth = <user-info@server-info>
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rv = ParseUserInfo(auth, p - auth, usernamePos, usernameLen, passwordPos,
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passwordLen);
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if (NS_FAILED(rv)) return rv;
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rv = ParseServerInfo(p + 1, authLen - (p - auth + 1), hostnamePos,
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hostnameLen, 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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} 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, hostnamePos, hostnameLen, 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,
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uint32_t* passwordPos, int32_t* passwordLen) {
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if (NS_WARN_IF(!userinfo)) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (userinfoLen < 0) userinfoLen = strlen(userinfo);
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if (userinfoLen == 0) {
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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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const char* p = (const char*)memchr(userinfo, ':', userinfoLen);
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if (p) {
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// userinfo = <username:password>
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SET_RESULT(username, 0, p - userinfo);
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SET_RESULT(password, p - userinfo + 1, userinfoLen - (p - userinfo + 1));
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} else {
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// userinfo = <username>
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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(
|
|
Substring(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) {
|
|
MOZ_ASSERT(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) {
|
|
MOZ_ASSERT(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);
|
|
}
|
|
}
|