The Tor Browser: netwerk/base/src/nsStandardURL.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* vim:set ts=4 sw=4 sts=4 et cindent: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #include "IPCMessageUtils.h"

     9 #include "nsStandardURL.h"

    10 #include "nsCRT.h"

    11 #include "nsEscape.h"

    12 #include "nsIFile.h"

    13 #include "nsIObjectInputStream.h"

    14 #include "nsIObjectOutputStream.h"

    15 #include "nsICharsetConverterManager.h"

    16 #include "nsIPrefService.h"

    17 #include "nsIPrefBranch.h"

    18 #include "nsIIDNService.h"

    19 #include "prlog.h"

    20 #include "nsAutoPtr.h"

    21 #include "nsIProgrammingLanguage.h"

    22 #include "nsIURLParser.h"

    23 #include "nsNetCID.h"

    24 #include "mozilla/MemoryReporting.h"

    25 #include "mozilla/ipc/URIUtils.h"

    26 #include <algorithm>

    28 using namespace mozilla::ipc;

    30 static NS_DEFINE_CID(kThisImplCID, NS_THIS_STANDARDURL_IMPL_CID);

    31 static NS_DEFINE_CID(kStandardURLCID, NS_STANDARDURL_CID);

    33 nsIIDNService *nsStandardURL::gIDN = nullptr;

    34 nsICharsetConverterManager *nsStandardURL::gCharsetMgr = nullptr;

    35 bool nsStandardURL::gInitialized = false;

    36 bool nsStandardURL::gEscapeUTF8 = true;

    37 bool nsStandardURL::gAlwaysEncodeInUTF8 = true;

    38 char nsStandardURL::gHostLimitDigits[] = { '/', '\\', '?', '#', 0 };

    40 #if defined(PR_LOGGING)

    41 //

    42 // setenv NSPR_LOG_MODULES nsStandardURL:5

    43 //

    44 static PRLogModuleInfo *gStandardURLLog;

    45 #endif

    47 // The Chromium code defines its own LOG macro which we don't want

    48 #undef LOG

    49 #define LOG(args)     PR_LOG(gStandardURLLog, PR_LOG_DEBUG, args)

    50 #undef LOG_ENABLED

    51 #define LOG_ENABLED() PR_LOG_TEST(gStandardURLLog, PR_LOG_DEBUG)

    53 //----------------------------------------------------------------------------

    55 #define ENSURE_MUTABLE() \

    56   PR_BEGIN_MACRO \

    57     if (!mMutable) { \

    58         NS_WARNING("attempt to modify an immutable nsStandardURL"); \

    59         return NS_ERROR_ABORT; \

    60     } \

    61   PR_END_MACRO

    63 //----------------------------------------------------------------------------

    65 static nsresult

    66 EncodeString(nsIUnicodeEncoder *encoder, const nsAFlatString &str, nsACString &result)

    67 {

    68     nsresult rv;

    69     int32_t len = str.Length();

    70     int32_t maxlen;

    72     rv = encoder->GetMaxLength(str.get(), len, &maxlen);

    73     if (NS_FAILED(rv))

    74         return rv;

    76     char buf[256], *p = buf;

    77     if (uint32_t(maxlen) > sizeof(buf) - 1) {

    78         p = (char *) malloc(maxlen + 1);

    79         if (!p)

    80             return NS_ERROR_OUT_OF_MEMORY;

    81     }

    83     rv = encoder->Convert(str.get(), &len, p, &maxlen);

    84     if (NS_FAILED(rv))

    85         goto end;

    86     if (rv == NS_ERROR_UENC_NOMAPPING) {

    87         NS_WARNING("unicode conversion failed");

    88         rv = NS_ERROR_UNEXPECTED;

    89         goto end;

    90     }

    91     p[maxlen] = 0;

    92     result.Assign(p);

    94     len = sizeof(buf) - 1;

    95     rv = encoder->Finish(buf, &len);

    96     if (NS_FAILED(rv))

    97         goto end;

    98     buf[len] = 0;

    99     result.Append(buf);

   101 end:

   102     encoder->Reset();

   104     if (p != buf)

   105         free(p);

   106     return rv;

   107 }

   109 //----------------------------------------------------------------------------

   110 // nsStandardURL::nsPrefObserver

   111 //----------------------------------------------------------------------------

   113 #define NS_NET_PREF_ESCAPEUTF8         "network.standard-url.escape-utf8"

   114 #define NS_NET_PREF_ALWAYSENCODEINUTF8 "network.standard-url.encode-utf8"

   116 NS_IMPL_ISUPPORTS(nsStandardURL::nsPrefObserver, nsIObserver)

   118 NS_IMETHODIMP nsStandardURL::

   119 nsPrefObserver::Observe(nsISupports *subject,

   120                         const char *topic,

   121                         const char16_t *data)

   122 {

   123     if (!strcmp(topic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {

   124         nsCOMPtr<nsIPrefBranch> prefBranch( do_QueryInterface(subject) );

   125         if (prefBranch) {

   126             PrefsChanged(prefBranch, NS_ConvertUTF16toUTF8(data).get());

   127         }

   128     }

   129     return NS_OK;

   130 }

   132 //----------------------------------------------------------------------------

   133 // nsStandardURL::nsSegmentEncoder

   134 //----------------------------------------------------------------------------

   136 nsStandardURL::

   137 nsSegmentEncoder::nsSegmentEncoder(const char *charset)

   138     : mCharset(charset)

   139 {

   140 }

   142 int32_t nsStandardURL::

   143 nsSegmentEncoder::EncodeSegmentCount(const char *str,

   144                                      const URLSegment &seg,

   145                                      int16_t mask,

   146                                      nsAFlatCString &result,

   147                                      bool &appended,

   148                                      uint32_t extraLen)

   149 {

   150     // extraLen is characters outside the segment that will be

   151     // added when the segment is not empty (like the @ following

   152     // a username).

   153     appended = false;

   154     if (!str)

   155         return 0;

   156     int32_t len = 0;

   157     if (seg.mLen > 0) {

   158         uint32_t pos = seg.mPos;

   159         len = seg.mLen;

   161         // first honor the origin charset if appropriate. as an optimization,

   162         // only do this if the segment is non-ASCII.  Further, if mCharset is

   163         // null or the empty string then the origin charset is UTF-8 and there

   164         // is nothing to do.

   165         nsAutoCString encBuf;

   166         if (mCharset && *mCharset && !nsCRT::IsAscii(str + pos, len)) {

   167             // we have to encode this segment

   168             if (mEncoder || InitUnicodeEncoder()) {

   169                 NS_ConvertUTF8toUTF16 ucsBuf(Substring(str + pos, str + pos + len));

   170                 if (NS_SUCCEEDED(EncodeString(mEncoder, ucsBuf, encBuf))) {

   171                     str = encBuf.get();

   172                     pos = 0;

   173                     len = encBuf.Length();

   174                 }

   175                 // else some failure occurred... assume UTF-8 is ok.

   176             }

   177         }

   179         // escape per RFC2396 unless UTF-8 and allowed by preferences

   180         int16_t escapeFlags = (gEscapeUTF8 || mEncoder) ? 0 : esc_OnlyASCII;

   182         uint32_t initLen = result.Length();

   184         // now perform any required escaping

   185         if (NS_EscapeURL(str + pos, len, mask | escapeFlags, result)) {

   186             len = result.Length() - initLen;

   187             appended = true;

   188         }

   189         else if (str == encBuf.get()) {

   190             result += encBuf; // append only!!

   191             len = encBuf.Length();

   192             appended = true;

   193         }

   194         len += extraLen;

   195     }

   196     return len;

   197 }

   199 const nsACString &nsStandardURL::

   200 nsSegmentEncoder::EncodeSegment(const nsASingleFragmentCString &str,

   201                                 int16_t mask,

   202                                 nsAFlatCString &result)

   203 {

   204     const char *text;

   205     bool encoded;

   206     EncodeSegmentCount(str.BeginReading(text), URLSegment(0, str.Length()), mask, result, encoded);

   207     if (encoded)

   208         return result;

   209     return str;

   210 }

   212 bool nsStandardURL::

   213 nsSegmentEncoder::InitUnicodeEncoder()

   214 {

   215     NS_ASSERTION(!mEncoder, "Don't call this if we have an encoder already!");

   216     nsresult rv;

   217     if (!gCharsetMgr) {

   218         rv = CallGetService("@mozilla.org/charset-converter-manager;1",

   219                             &gCharsetMgr);

   220         if (NS_FAILED(rv)) {

   221             NS_ERROR("failed to get charset-converter-manager");

   222             return false;

   223         }

   224     }

   226     rv = gCharsetMgr->GetUnicodeEncoder(mCharset, getter_AddRefs(mEncoder));

   227     if (NS_FAILED(rv)) {

   228         NS_ERROR("failed to get unicode encoder");

   229         mEncoder = 0; // just in case

   230         return false;

   231     }

   233     return true;

   234 }

   236 #define GET_SEGMENT_ENCODER_INTERNAL(name, useUTF8) \

   237     nsSegmentEncoder name(useUTF8 ? nullptr : mOriginCharset.get())

   239 #define GET_SEGMENT_ENCODER(name) \

   240     GET_SEGMENT_ENCODER_INTERNAL(name, gAlwaysEncodeInUTF8)

   242 #define GET_QUERY_ENCODER(name) \

   243     GET_SEGMENT_ENCODER_INTERNAL(name, false)

   245 //----------------------------------------------------------------------------

   246 // nsStandardURL <public>

   247 //----------------------------------------------------------------------------

   249 #ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN

   250 static PRCList gAllURLs;

   251 #endif

   253 nsStandardURL::nsStandardURL(bool aSupportsFileURL)

   254     : mDefaultPort(-1)

   255     , mPort(-1)

   256     , mHostA(nullptr)

   257     , mHostEncoding(eEncoding_ASCII)

   258     , mSpecEncoding(eEncoding_Unknown)

   259     , mURLType(URLTYPE_STANDARD)

   260     , mMutable(true)

   261     , mSupportsFileURL(aSupportsFileURL)

   262 {

   263 #if defined(PR_LOGGING)

   264     if (!gStandardURLLog)

   265         gStandardURLLog = PR_NewLogModule("nsStandardURL");

   266 #endif

   268     LOG(("Creating nsStandardURL @%p\n", this));

   270     if (!gInitialized) {

   271         gInitialized = true;

   272         InitGlobalObjects();

   273     }

   275     // default parser in case nsIStandardURL::Init is never called

   276     mParser = net_GetStdURLParser();

   278 #ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN

   279     PR_APPEND_LINK(&mDebugCList, &gAllURLs);

   280 #endif

   281 }

   283 nsStandardURL::~nsStandardURL()

   284 {

   285     LOG(("Destroying nsStandardURL @%p\n", this));

   287     if (mHostA) {

   288         free(mHostA);

   289     }

   290 #ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN

   291     PR_REMOVE_LINK(&mDebugCList);

   292 #endif

   293 }

   295 #ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN

   296 struct DumpLeakedURLs {

   297     DumpLeakedURLs() {}

   298     ~DumpLeakedURLs();

   299 };

   301 DumpLeakedURLs::~DumpLeakedURLs()

   302 {

   303     if (!PR_CLIST_IS_EMPTY(&gAllURLs)) {

   304         printf("Leaked URLs:\n");

   305         for (PRCList *l = PR_LIST_HEAD(&gAllURLs); l != &gAllURLs; l = PR_NEXT_LINK(l)) {

   306             nsStandardURL *url = reinterpret_cast<nsStandardURL*>(reinterpret_cast<char*>(l) - offsetof(nsStandardURL, mDebugCList));

   307             url->PrintSpec();

   308         }

   309     }

   310 }

   311 #endif

   313 void

   314 nsStandardURL::InitGlobalObjects()

   315 {

   316     nsCOMPtr<nsIPrefBranch> prefBranch( do_GetService(NS_PREFSERVICE_CONTRACTID) );

   317     if (prefBranch) {

   318         nsCOMPtr<nsIObserver> obs( new nsPrefObserver() );

   319         prefBranch->AddObserver(NS_NET_PREF_ESCAPEUTF8, obs.get(), false);

   320         prefBranch->AddObserver(NS_NET_PREF_ALWAYSENCODEINUTF8, obs.get(), false);

   322         PrefsChanged(prefBranch, nullptr);

   323     }

   325 #ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN

   326     PR_INIT_CLIST(&gAllURLs);

   327 #endif

   328 }

   330 void

   331 nsStandardURL::ShutdownGlobalObjects()

   332 {

   333     NS_IF_RELEASE(gIDN);

   334     NS_IF_RELEASE(gCharsetMgr);

   336 #ifdef DEBUG_DUMP_URLS_AT_SHUTDOWN

   337     if (gInitialized) {

   338         // This instanciates a dummy class, and will trigger the class

   339         // destructor when libxul is unloaded. This is equivalent to atexit(),

   340         // but gracefully handles dlclose().

   341         static DumpLeakedURLs d;

   342     }

   343 #endif

   344 }

   346 //----------------------------------------------------------------------------

   347 // nsStandardURL <private>

   348 //----------------------------------------------------------------------------

   350 void

   351 nsStandardURL::Clear()

   352 {

   353     mSpec.Truncate();

   355     mPort = -1;

   357     mScheme.Reset();

   358     mAuthority.Reset();

   359     mUsername.Reset();

   360     mPassword.Reset();

   361     mHost.Reset();

   362     mHostEncoding = eEncoding_ASCII;

   364     mPath.Reset();

   365     mFilepath.Reset();

   366     mDirectory.Reset();

   367     mBasename.Reset();

   369     mExtension.Reset();

   370     mQuery.Reset();

   371     mRef.Reset();

   373     InvalidateCache();

   374 }

   376 void

   377 nsStandardURL::InvalidateCache(bool invalidateCachedFile)

   378 {

   379     if (invalidateCachedFile)

   380         mFile = 0;

   381     if (mHostA) {

   382         free(mHostA);

   383         mHostA = nullptr;

   384     }

   385     mSpecEncoding = eEncoding_Unknown;

   386 }

   388 bool

   389 nsStandardURL::EscapeIPv6(const char *host, nsCString &result)

   390 {

   391     // Escape IPv6 address literal by surrounding it with []'s

   392     if (host && (host[0] != '[') && PL_strchr(host, ':')) {

   393         result.Assign('[');

   394         result.Append(host);

   395         result.Append(']');

   396         return true;

   397     }

   398     return false;

   399 }

   401 bool

   402 nsStandardURL::NormalizeIDN(const nsCSubstring &host, nsCString &result)

   403 {

   404     // If host is ACE, then convert to UTF-8.  Else, if host is already UTF-8,

   405     // then make sure it is normalized per IDN.

   407     // this function returns true if normalization succeeds.

   409     // NOTE: As a side-effect this function sets mHostEncoding.  While it would

   410     // be nice to avoid side-effects in this function, the implementation of

   411     // this function is already somewhat bound to the behavior of the

   412     // callsites.  Anyways, this function exists to avoid code duplication, so

   413     // side-effects abound :-/

   415     NS_ASSERTION(mHostEncoding == eEncoding_ASCII, "unexpected default encoding");

   417     bool isASCII;

   418     if (!gIDN) {

   419         nsCOMPtr<nsIIDNService> serv(do_GetService(NS_IDNSERVICE_CONTRACTID));

   420         if (serv) {

   421             NS_ADDREF(gIDN = serv.get());

   422         }

   423     }

   425     if (gIDN &&

   426         NS_SUCCEEDED(gIDN->ConvertToDisplayIDN(host, &isASCII, result))) {

   427         if (!isASCII)

   428           mHostEncoding = eEncoding_UTF8;

   430         return true;

   431     }

   433     result.Truncate();

   434     return false;

   435 }

   437 void

   438 nsStandardURL::CoalescePath(netCoalesceFlags coalesceFlag, char *path)

   439 {

   440     net_CoalesceDirs(coalesceFlag, path);

   441     int32_t newLen = strlen(path);

   442     if (newLen < mPath.mLen) {

   443         int32_t diff = newLen - mPath.mLen;

   444         mPath.mLen = newLen;

   445         mDirectory.mLen += diff;

   446         mFilepath.mLen += diff;

   447         ShiftFromBasename(diff);

   448     }

   449 }

   451 uint32_t

   452 nsStandardURL::AppendSegmentToBuf(char *buf, uint32_t i, const char *str, URLSegment &seg, const nsCString *escapedStr, bool useEscaped)

   453 {

   454     if (seg.mLen > 0) {

   455         if (useEscaped) {

   456             seg.mLen = escapedStr->Length();

   457             memcpy(buf + i, escapedStr->get(), seg.mLen);

   458         }

   459         else

   460             memcpy(buf + i, str + seg.mPos, seg.mLen);

   461         seg.mPos = i;

   462         i += seg.mLen;

   463     } else {

   464         seg.mPos = i;

   465     }

   466     return i;

   467 }

   469 uint32_t

   470 nsStandardURL::AppendToBuf(char *buf, uint32_t i, const char *str, uint32_t len)

   471 {

   472     memcpy(buf + i, str, len);

   473     return i + len;

   474 }

   476 // basic algorithm:

   477 //  1- escape url segments (for improved GetSpec efficiency)

   478 //  2- allocate spec buffer

   479 //  3- write url segments

   480 //  4- update url segment positions and lengths

   481 nsresult

   482 nsStandardURL::BuildNormalizedSpec(const char *spec)

   483 {

   484     // Assumptions: all member URLSegments must be relative the |spec| argument

   485     // passed to this function.

   487     // buffers for holding escaped url segments (these will remain empty unless

   488     // escaping is required).

   489     nsAutoCString encUsername, encPassword, encHost, encDirectory,

   490       encBasename, encExtension, encQuery, encRef;

   491     bool useEncUsername, useEncPassword, useEncHost = false,

   492       useEncDirectory, useEncBasename, useEncExtension, useEncQuery, useEncRef;

   493     nsAutoCString portbuf;

   495     //

   496     // escape each URL segment, if necessary, and calculate approximate normalized

   497     // spec length.

   498     //

   499     // [scheme://][username[:password]@]host[:port]/path[?query_string][#ref]

   501     uint32_t approxLen = 0;

   503     // the scheme is already ASCII

   504     if (mScheme.mLen > 0)

   505         approxLen += mScheme.mLen + 3; // includes room for "://", which we insert always

   507     // encode URL segments; convert UTF-8 to origin charset and possibly escape.

   508     // results written to encXXX variables only if |spec| is not already in the

   509     // appropriate encoding.

   510     {

   511         GET_SEGMENT_ENCODER(encoder);

   512         GET_QUERY_ENCODER(queryEncoder);

   513         // Items using an extraLen of 1 don't add anything unless mLen > 0

   514         // Username@

   515         approxLen += encoder.EncodeSegmentCount(spec, mUsername,  esc_Username,      encUsername,  useEncUsername, 1);

   516         // :password - we insert the ':' even if there's no actual password if "user:@" was in the spec

   517         if (mPassword.mLen >= 0)

   518             approxLen += 1 + encoder.EncodeSegmentCount(spec, mPassword,  esc_Password,      encPassword,  useEncPassword);

   519         // mHost is handled differently below due to encoding differences

   520         NS_ABORT_IF_FALSE(mPort >= -1, "Invalid negative mPort");

   521         if (mPort != -1 && mPort != mDefaultPort)

   522         {

   523             // :port

   524             portbuf.AppendInt(mPort);

   525             approxLen += portbuf.Length() + 1;

   526         }

   528         approxLen += 1; // reserve space for possible leading '/' - may not be needed

   529         // Should just use mPath?  These are pessimistic, and thus waste space

   530         approxLen += encoder.EncodeSegmentCount(spec, mDirectory, esc_Directory,     encDirectory, useEncDirectory, 1);

   531         approxLen += encoder.EncodeSegmentCount(spec, mBasename,  esc_FileBaseName,  encBasename,  useEncBasename);

   532         approxLen += encoder.EncodeSegmentCount(spec, mExtension, esc_FileExtension, encExtension, useEncExtension, 1);

   534         // These next ones *always* add their leading character even if length is 0

   535         // Handles items like "http://#"

   536         // ?query

   537         if (mQuery.mLen >= 0)

   538             approxLen += 1 + queryEncoder.EncodeSegmentCount(spec, mQuery, esc_Query,        encQuery,     useEncQuery);

   539         // #ref

   540         if (mRef.mLen >= 0)

   541             approxLen += 1 + encoder.EncodeSegmentCount(spec, mRef,       esc_Ref,           encRef,       useEncRef);

   542     }

   544     // do not escape the hostname, if IPv6 address literal, mHost will

   545     // already point to a [ ] delimited IPv6 address literal.

   546     // However, perform Unicode normalization on it, as IDN does.

   547     mHostEncoding = eEncoding_ASCII;

   548     // Note that we don't disallow URLs without a host - file:, etc

   549     if (mHost.mLen > 0) {

   550         const nsCSubstring& tempHost =

   551             Substring(spec + mHost.mPos, spec + mHost.mPos + mHost.mLen);

   552         if (tempHost.FindChar('\0') != kNotFound)

   553             return NS_ERROR_MALFORMED_URI;  // null embedded in hostname

   554         if (tempHost.FindChar(' ') != kNotFound)

   555             return NS_ERROR_MALFORMED_URI;  // don't allow spaces in the hostname

   556         if ((useEncHost = NormalizeIDN(tempHost, encHost)))

   557             approxLen += encHost.Length();

   558         else

   559             approxLen += mHost.mLen;

   560     }

   562     //

   563     // generate the normalized URL string

   564     //

   565     // approxLen should be correct or 1 high

   566     if (!mSpec.SetLength(approxLen+1, mozilla::fallible_t())) // buf needs a trailing '\0' below

   567         return NS_ERROR_OUT_OF_MEMORY;

   568     char *buf;

   569     mSpec.BeginWriting(buf);

   570     uint32_t i = 0;

   572     if (mScheme.mLen > 0) {

   573         i = AppendSegmentToBuf(buf, i, spec, mScheme);

   574         net_ToLowerCase(buf + mScheme.mPos, mScheme.mLen);

   575         i = AppendToBuf(buf, i, "://", 3);

   576     }

   578     // record authority starting position

   579     mAuthority.mPos = i;

   581     // append authority

   582     if (mUsername.mLen > 0) {

   583         i = AppendSegmentToBuf(buf, i, spec, mUsername, &encUsername, useEncUsername);

   584         if (mPassword.mLen >= 0) {

   585             buf[i++] = ':';

   586             i = AppendSegmentToBuf(buf, i, spec, mPassword, &encPassword, useEncPassword);

   587         }

   588         buf[i++] = '@';

   589     }

   590     if (mHost.mLen > 0) {

   591         i = AppendSegmentToBuf(buf, i, spec, mHost, &encHost, useEncHost);

   592         net_ToLowerCase(buf + mHost.mPos, mHost.mLen);

   593         NS_ABORT_IF_FALSE(mPort >= -1, "Invalid negative mPort");

   594         if (mPort != -1 && mPort != mDefaultPort) {

   595             buf[i++] = ':';

   596             // Already formatted while building approxLen

   597             i = AppendToBuf(buf, i, portbuf.get(), portbuf.Length());

   598         }

   599     }

   601     // record authority length

   602     mAuthority.mLen = i - mAuthority.mPos;

   604     // path must always start with a "/"

   605     if (mPath.mLen <= 0) {

   606         LOG(("setting path=/"));

   607         mDirectory.mPos = mFilepath.mPos = mPath.mPos = i;

   608         mDirectory.mLen = mFilepath.mLen = mPath.mLen = 1;

   609         // basename must exist, even if empty (bug 113508)

   610         mBasename.mPos = i+1;

   611         mBasename.mLen = 0;

   612         buf[i++] = '/';

   613     }

   614     else {

   615         uint32_t leadingSlash = 0;

   616         if (spec[mPath.mPos] != '/') {

   617             LOG(("adding leading slash to path\n"));

   618             leadingSlash = 1;

   619             buf[i++] = '/';

   620             // basename must exist, even if empty (bugs 113508, 429347)

   621             if (mBasename.mLen == -1) {

   622                 mBasename.mPos = i;

   623                 mBasename.mLen = 0;

   624             }

   625         }

   627         // record corrected (file)path starting position

   628         mPath.mPos = mFilepath.mPos = i - leadingSlash;

   630         i = AppendSegmentToBuf(buf, i, spec, mDirectory, &encDirectory, useEncDirectory);

   632         // the directory must end with a '/'

   633         if (buf[i-1] != '/') {

   634             buf[i++] = '/';

   635             mDirectory.mLen++;

   636         }

   638         i = AppendSegmentToBuf(buf, i, spec, mBasename, &encBasename, useEncBasename);

   640         // make corrections to directory segment if leadingSlash

   641         if (leadingSlash) {

   642             mDirectory.mPos = mPath.mPos;

   643             if (mDirectory.mLen >= 0)

   644                 mDirectory.mLen += leadingSlash;

   645             else

   646                 mDirectory.mLen = 1;

   647         }

   649         if (mExtension.mLen >= 0) {

   650             buf[i++] = '.';

   651             i = AppendSegmentToBuf(buf, i, spec, mExtension, &encExtension, useEncExtension);

   652         }

   653         // calculate corrected filepath length

   654         mFilepath.mLen = i - mFilepath.mPos;

   656         if (mQuery.mLen >= 0) {

   657             buf[i++] = '?';

   658             i = AppendSegmentToBuf(buf, i, spec, mQuery, &encQuery, useEncQuery);

   659         }

   660         if (mRef.mLen >= 0) {

   661             buf[i++] = '#';

   662             i = AppendSegmentToBuf(buf, i, spec, mRef, &encRef, useEncRef);

   663         }

   664         // calculate corrected path length

   665         mPath.mLen = i - mPath.mPos;

   666     }

   668     buf[i] = '\0';

   670     if (mDirectory.mLen > 1) {

   671         netCoalesceFlags coalesceFlag = NET_COALESCE_NORMAL;

   672         if (SegmentIs(buf,mScheme,"ftp")) {

   673             coalesceFlag = (netCoalesceFlags) (coalesceFlag

   674                                         | NET_COALESCE_ALLOW_RELATIVE_ROOT

   675                                         | NET_COALESCE_DOUBLE_SLASH_IS_ROOT);

   676         }

   677         CoalescePath(coalesceFlag, buf + mDirectory.mPos);

   678     }

   679     mSpec.SetLength(strlen(buf));

   680     NS_ASSERTION(mSpec.Length() <= approxLen, "We've overflowed the mSpec buffer!");

   681     return NS_OK;

   682 }

   684 bool

   685 nsStandardURL::SegmentIs(const URLSegment &seg, const char *val, bool ignoreCase)

   686 {

   687     // one or both may be null

   688     if (!val || mSpec.IsEmpty())

   689         return (!val && (mSpec.IsEmpty() || seg.mLen < 0));

   690     if (seg.mLen < 0)

   691         return false;

   692     // if the first |seg.mLen| chars of |val| match, then |val| must

   693     // also be null terminated at |seg.mLen|.

   694     if (ignoreCase)

   695         return !PL_strncasecmp(mSpec.get() + seg.mPos, val, seg.mLen)

   696             && (val[seg.mLen] == '\0');

   697     else

   698         return !strncmp(mSpec.get() + seg.mPos, val, seg.mLen)

   699             && (val[seg.mLen] == '\0');

   700 }

   702 bool

   703 nsStandardURL::SegmentIs(const char* spec, const URLSegment &seg, const char *val, bool ignoreCase)

   704 {

   705     // one or both may be null

   706     if (!val || !spec)

   707         return (!val && (!spec || seg.mLen < 0));

   708     if (seg.mLen < 0)

   709         return false;

   710     // if the first |seg.mLen| chars of |val| match, then |val| must

   711     // also be null terminated at |seg.mLen|.

   712     if (ignoreCase)

   713         return !PL_strncasecmp(spec + seg.mPos, val, seg.mLen)

   714             && (val[seg.mLen] == '\0');

   715     else

   716         return !strncmp(spec + seg.mPos, val, seg.mLen)

   717             && (val[seg.mLen] == '\0');

   718 }

   720 bool

   721 nsStandardURL::SegmentIs(const URLSegment &seg1, const char *val, const URLSegment &seg2, bool ignoreCase)

   722 {

   723     if (seg1.mLen != seg2.mLen)

   724         return false;

   725     if (seg1.mLen == -1 || (!val && mSpec.IsEmpty()))

   726         return true; // both are empty

   727     if (!val)

   728         return false;

   729     if (ignoreCase)

   730         return !PL_strncasecmp(mSpec.get() + seg1.mPos, val + seg2.mPos, seg1.mLen);

   731     else

   732         return !strncmp(mSpec.get() + seg1.mPos, val + seg2.mPos, seg1.mLen);

   733 }

   735 int32_t

   736 nsStandardURL::ReplaceSegment(uint32_t pos, uint32_t len, const char *val, uint32_t valLen)

   737 {

   738     if (val && valLen) {

   739         if (len == 0)

   740             mSpec.Insert(val, pos, valLen);

   741         else

   742             mSpec.Replace(pos, len, nsDependentCString(val, valLen));

   743         return valLen - len;

   744     }

   746     // else remove the specified segment

   747     mSpec.Cut(pos, len);

   748     return -int32_t(len);

   749 }

   751 int32_t

   752 nsStandardURL::ReplaceSegment(uint32_t pos, uint32_t len, const nsACString &val)

   753 {

   754     if (len == 0)

   755         mSpec.Insert(val, pos);

   756     else

   757         mSpec.Replace(pos, len, val);

   758     return val.Length() - len;

   759 }

   761 nsresult

   762 nsStandardURL::ParseURL(const char *spec, int32_t specLen)

   763 {

   764     nsresult rv;

   766     //

   767     // parse given URL string

   768     //

   769     rv = mParser->ParseURL(spec, specLen,

   770                            &mScheme.mPos, &mScheme.mLen,

   771                            &mAuthority.mPos, &mAuthority.mLen,

   772                            &mPath.mPos, &mPath.mLen);

   773     if (NS_FAILED(rv)) return rv;

   775 #ifdef DEBUG

   776     if (mScheme.mLen <= 0) {

   777         printf("spec=%s\n", spec);

   778         NS_WARNING("malformed url: no scheme");

   779     }

   780 #endif

   782     if (mAuthority.mLen > 0) {

   783         rv = mParser->ParseAuthority(spec + mAuthority.mPos, mAuthority.mLen,

   784                                      &mUsername.mPos, &mUsername.mLen,

   785                                      &mPassword.mPos, &mPassword.mLen,

   786                                      &mHost.mPos, &mHost.mLen,

   787                                      &mPort);

   788         if (NS_FAILED(rv)) return rv;

   790         // Don't allow mPort to be set to this URI's default port

   791         if (mPort == mDefaultPort)

   792             mPort = -1;

   794         mUsername.mPos += mAuthority.mPos;

   795         mPassword.mPos += mAuthority.mPos;

   796         mHost.mPos += mAuthority.mPos;

   797     }

   799     if (mPath.mLen > 0)

   800         rv = ParsePath(spec, mPath.mPos, mPath.mLen);

   802     return rv;

   803 }

   805 nsresult

   806 nsStandardURL::ParsePath(const char *spec, uint32_t pathPos, int32_t pathLen)

   807 {

   808     LOG(("ParsePath: %s pathpos %d len %d\n",spec,pathPos,pathLen));

   810     nsresult rv = mParser->ParsePath(spec + pathPos, pathLen,

   811                                      &mFilepath.mPos, &mFilepath.mLen,

   812                                      &mQuery.mPos, &mQuery.mLen,

   813                                      &mRef.mPos, &mRef.mLen);

   814     if (NS_FAILED(rv)) return rv;

   816     mFilepath.mPos += pathPos;

   817     mQuery.mPos += pathPos;

   818     mRef.mPos += pathPos;

   820     if (mFilepath.mLen > 0) {

   821         rv = mParser->ParseFilePath(spec + mFilepath.mPos, mFilepath.mLen,

   822                                     &mDirectory.mPos, &mDirectory.mLen,

   823                                     &mBasename.mPos, &mBasename.mLen,

   824                                     &mExtension.mPos, &mExtension.mLen);

   825         if (NS_FAILED(rv)) return rv;

   827         mDirectory.mPos += mFilepath.mPos;

   828         mBasename.mPos += mFilepath.mPos;

   829         mExtension.mPos += mFilepath.mPos;

   830     }

   831     return NS_OK;

   832 }

   834 char *

   835 nsStandardURL::AppendToSubstring(uint32_t pos,

   836                                  int32_t len,

   837                                  const char *tail)

   838 {

   839     // Verify pos and length are within boundaries

   840     if (pos > mSpec.Length())

   841         return nullptr;

   842     if (len < 0)

   843         return nullptr;

   844     if ((uint32_t)len > (mSpec.Length() - pos))

   845         return nullptr;

   846     if (!tail)

   847         return nullptr;

   849     uint32_t tailLen = strlen(tail);

   851     // Check for int overflow for proposed length of combined string

   852     if (UINT32_MAX - ((uint32_t)len + 1) < tailLen)

   853         return nullptr;

   855     char *result = (char *) NS_Alloc(len + tailLen + 1);

   856     if (result) {

   857         memcpy(result, mSpec.get() + pos, len);

   858         memcpy(result + len, tail, tailLen);

   859         result[len + tailLen] = '\0';

   860     }

   861     return result;

   862 }

   864 nsresult

   865 nsStandardURL::ReadSegment(nsIBinaryInputStream *stream, URLSegment &seg)

   866 {

   867     nsresult rv;

   869     rv = stream->Read32(&seg.mPos);

   870     if (NS_FAILED(rv)) return rv;

   872     rv = stream->Read32((uint32_t *) &seg.mLen);

   873     if (NS_FAILED(rv)) return rv;

   875     return NS_OK;

   876 }

   878 nsresult

   879 nsStandardURL::WriteSegment(nsIBinaryOutputStream *stream, const URLSegment &seg)

   880 {

   881     nsresult rv;

   883     rv = stream->Write32(seg.mPos);

   884     if (NS_FAILED(rv)) return rv;

   886     rv = stream->Write32(uint32_t(seg.mLen));

   887     if (NS_FAILED(rv)) return rv;

   889     return NS_OK;

   890 }

   892 /* static */ void

   893 nsStandardURL::PrefsChanged(nsIPrefBranch *prefs, const char *pref)

   894 {

   895     bool val;

   897     LOG(("nsStandardURL::PrefsChanged [pref=%s]\n", pref));

   899 #define PREF_CHANGED(p) ((pref == nullptr) || !strcmp(pref, p))

   900 #define GOT_PREF(p, b) (NS_SUCCEEDED(prefs->GetBoolPref(p, &b)))

   902     if (PREF_CHANGED(NS_NET_PREF_ESCAPEUTF8)) {

   903         if (GOT_PREF(NS_NET_PREF_ESCAPEUTF8, val))

   904             gEscapeUTF8 = val;

   905         LOG(("escape UTF-8 %s\n", gEscapeUTF8 ? "enabled" : "disabled"));

   906     }

   908     if (PREF_CHANGED(NS_NET_PREF_ALWAYSENCODEINUTF8)) {

   909         if (GOT_PREF(NS_NET_PREF_ALWAYSENCODEINUTF8, val))

   910             gAlwaysEncodeInUTF8 = val;

   911         LOG(("encode in UTF-8 %s\n", gAlwaysEncodeInUTF8 ? "enabled" : "disabled"));

   912     }

   913 #undef PREF_CHANGED

   914 #undef GOT_PREF

   915 }

   917 //----------------------------------------------------------------------------

   918 // nsStandardURL::nsISupports

   919 //----------------------------------------------------------------------------

   921 NS_IMPL_ADDREF(nsStandardURL)

   922 NS_IMPL_RELEASE(nsStandardURL)

   924 NS_INTERFACE_MAP_BEGIN(nsStandardURL)

   925     NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIStandardURL)

   926     NS_INTERFACE_MAP_ENTRY(nsIURI)

   927     NS_INTERFACE_MAP_ENTRY(nsIURL)

   928     NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIFileURL, mSupportsFileURL)

   929     NS_INTERFACE_MAP_ENTRY(nsIStandardURL)

   930     NS_INTERFACE_MAP_ENTRY(nsISerializable)

   931     NS_INTERFACE_MAP_ENTRY(nsIClassInfo)

   932     NS_INTERFACE_MAP_ENTRY(nsIMutable)

   933     NS_INTERFACE_MAP_ENTRY(nsIIPCSerializableURI)

   934     // see nsStandardURL::Equals

   935     if (aIID.Equals(kThisImplCID))

   936         foundInterface = static_cast<nsIURI *>(this);

   937     else

   938     NS_INTERFACE_MAP_ENTRY(nsISizeOf)

   939 NS_INTERFACE_MAP_END

   941 //----------------------------------------------------------------------------

   942 // nsStandardURL::nsIURI

   943 //----------------------------------------------------------------------------

   945 // result may contain unescaped UTF-8 characters

   946 NS_IMETHODIMP

   947 nsStandardURL::GetSpec(nsACString &result)

   948 {

   949     result = mSpec;

   950     return NS_OK;

   951 }

   953 // result may contain unescaped UTF-8 characters

   954 NS_IMETHODIMP

   955 nsStandardURL::GetSpecIgnoringRef(nsACString &result)

   956 {

   957     // URI without ref is 0 to one char before ref

   958     if (mRef.mLen >= 0) {

   959         URLSegment noRef(0, mRef.mPos - 1);

   961         result = Segment(noRef);

   962     } else {

   963         result = mSpec;

   964     }

   965     return NS_OK;

   966 }

   968 // result may contain unescaped UTF-8 characters

   969 NS_IMETHODIMP

   970 nsStandardURL::GetPrePath(nsACString &result)

   971 {

   972     result = Prepath();

   973     return NS_OK;

   974 }

   976 // result is strictly US-ASCII

   977 NS_IMETHODIMP

   978 nsStandardURL::GetScheme(nsACString &result)

   979 {

   980     result = Scheme();

   981     return NS_OK;

   982 }

   984 // result may contain unescaped UTF-8 characters

   985 NS_IMETHODIMP

   986 nsStandardURL::GetUserPass(nsACString &result)

   987 {

   988     result = Userpass();

   989     return NS_OK;

   990 }

   992 // result may contain unescaped UTF-8 characters

   993 NS_IMETHODIMP

   994 nsStandardURL::GetUsername(nsACString &result)

   995 {

   996     result = Username();

   997     return NS_OK;

   998 }

  1000 // result may contain unescaped UTF-8 characters

  1001 NS_IMETHODIMP

  1002 nsStandardURL::GetPassword(nsACString &result)

  1003 {

  1004     result = Password();

  1005     return NS_OK;

  1006 }

  1008 NS_IMETHODIMP

  1009 nsStandardURL::GetHostPort(nsACString &result)

  1010 {

  1011     result = Hostport();

  1012     return NS_OK;

  1013 }

  1015 NS_IMETHODIMP

  1016 nsStandardURL::GetHost(nsACString &result)

  1017 {

  1018     result = Host();

  1019     return NS_OK;

  1020 }

  1022 NS_IMETHODIMP

  1023 nsStandardURL::GetPort(int32_t *result)

  1024 {

  1025     *result = mPort;

  1026     return NS_OK;

  1027 }

  1029 // result may contain unescaped UTF-8 characters

  1030 NS_IMETHODIMP

  1031 nsStandardURL::GetPath(nsACString &result)

  1032 {

  1033     result = Path();

  1034     return NS_OK;

  1035 }

  1037 // result is ASCII

  1038 NS_IMETHODIMP

  1039 nsStandardURL::GetAsciiSpec(nsACString &result)

  1040 {

  1041     if (mSpecEncoding == eEncoding_Unknown) {

  1042         if (IsASCII(mSpec))

  1043             mSpecEncoding = eEncoding_ASCII;

  1044         else

  1045             mSpecEncoding = eEncoding_UTF8;

  1046     }

  1048     if (mSpecEncoding == eEncoding_ASCII) {

  1049         result = mSpec;

  1050         return NS_OK;

  1051     }

  1053     // try to guess the capacity required for result...

  1054     result.SetCapacity(mSpec.Length() + std::min<uint32_t>(32, mSpec.Length()/10));

  1056     result = Substring(mSpec, 0, mScheme.mLen + 3);

  1058     NS_EscapeURL(Userpass(true), esc_OnlyNonASCII | esc_AlwaysCopy, result);

  1060     // get escaped host

  1061     nsAutoCString escHostport;

  1062     if (mHost.mLen > 0) {

  1063         // this doesn't fail

  1064         (void) GetAsciiHost(escHostport);

  1066         // escHostport = "hostA" + ":port"

  1067         uint32_t pos = mHost.mPos + mHost.mLen;

  1068         if (pos < mPath.mPos)

  1069             escHostport += Substring(mSpec, pos, mPath.mPos - pos);

  1070     }

  1071     result += escHostport;

  1073     NS_EscapeURL(Path(), esc_OnlyNonASCII | esc_AlwaysCopy, result);

  1074     return NS_OK;

  1075 }

  1077 // result is ASCII

  1078 NS_IMETHODIMP

  1079 nsStandardURL::GetAsciiHost(nsACString &result)

  1080 {

  1081     if (mHostEncoding == eEncoding_ASCII) {

  1082         result = Host();

  1083         return NS_OK;

  1084     }

  1086     // perhaps we have it cached...

  1087     if (mHostA) {

  1088         result = mHostA;

  1089         return NS_OK;

  1090     }

  1092     if (gIDN) {

  1093         nsresult rv;

  1094         rv = gIDN->ConvertUTF8toACE(Host(), result);

  1095         if (NS_SUCCEEDED(rv)) {

  1096             mHostA = ToNewCString(result);

  1097             return NS_OK;

  1098         }

  1099         NS_WARNING("nsIDNService::ConvertUTF8toACE failed");

  1100     }

  1102     // something went wrong... guess all we can do is URL escape :-/

  1103     NS_EscapeURL(Host(), esc_OnlyNonASCII | esc_AlwaysCopy, result);

  1104     return NS_OK;

  1105 }

  1107 NS_IMETHODIMP

  1108 nsStandardURL::GetOriginCharset(nsACString &result)

  1109 {

  1110     if (mOriginCharset.IsEmpty())

  1111         result.AssignLiteral("UTF-8");

  1112     else

  1113         result = mOriginCharset;

  1114     return NS_OK;

  1115 }

  1117 NS_IMETHODIMP

  1118 nsStandardURL::SetSpec(const nsACString &input)

  1119 {

  1120     ENSURE_MUTABLE();

  1122     const nsPromiseFlatCString &flat = PromiseFlatCString(input);

  1123     const char *spec = flat.get();

  1124     int32_t specLength = flat.Length();

  1126     LOG(("nsStandardURL::SetSpec [spec=%s]\n", spec));

  1128     Clear();

  1130     if (!spec || !*spec)

  1131         return NS_OK;

  1133     // filter out unexpected chars "\r\n\t" if necessary

  1134     nsAutoCString buf1;

  1135     if (net_FilterURIString(spec, buf1)) {

  1136         spec = buf1.get();

  1137         specLength = buf1.Length();

  1138     }

  1140     // parse the given URL...

  1141     nsresult rv = ParseURL(spec, specLength);

  1142     if (NS_SUCCEEDED(rv)) {

  1143         // finally, use the URLSegment member variables to build a normalized

  1144         // copy of |spec|

  1145         rv = BuildNormalizedSpec(spec);

  1146     }

  1148     if (NS_FAILED(rv)) {

  1149         Clear();

  1150         return rv;

  1151     }

  1153 #if defined(PR_LOGGING)

  1154     if (LOG_ENABLED()) {

  1155         LOG((" spec      = %s\n", mSpec.get()));

  1156         LOG((" port      = %d\n", mPort));

  1157         LOG((" scheme    = (%u,%d)\n", mScheme.mPos,    mScheme.mLen));

  1158         LOG((" authority = (%u,%d)\n", mAuthority.mPos, mAuthority.mLen));

  1159         LOG((" username  = (%u,%d)\n", mUsername.mPos,  mUsername.mLen));

  1160         LOG((" password  = (%u,%d)\n", mPassword.mPos,  mPassword.mLen));

  1161         LOG((" hostname  = (%u,%d)\n", mHost.mPos,      mHost.mLen));

  1162         LOG((" path      = (%u,%d)\n", mPath.mPos,      mPath.mLen));

  1163         LOG((" filepath  = (%u,%d)\n", mFilepath.mPos,  mFilepath.mLen));

  1164         LOG((" directory = (%u,%d)\n", mDirectory.mPos, mDirectory.mLen));

  1165         LOG((" basename  = (%u,%d)\n", mBasename.mPos,  mBasename.mLen));

  1166         LOG((" extension = (%u,%d)\n", mExtension.mPos, mExtension.mLen));

  1167         LOG((" query     = (%u,%d)\n", mQuery.mPos,     mQuery.mLen));

  1168         LOG((" ref       = (%u,%d)\n", mRef.mPos,       mRef.mLen));

  1169     }

  1170 #endif

  1171     return rv;

  1172 }

  1174 NS_IMETHODIMP

  1175 nsStandardURL::SetScheme(const nsACString &input)

  1176 {

  1177     ENSURE_MUTABLE();

  1179     const nsPromiseFlatCString &scheme = PromiseFlatCString(input);

  1181     LOG(("nsStandardURL::SetScheme [scheme=%s]\n", scheme.get()));

  1183     if (scheme.IsEmpty()) {

  1184         NS_WARNING("cannot remove the scheme from an url");

  1185         return NS_ERROR_UNEXPECTED;

  1186     }

  1187     if (mScheme.mLen < 0) {

  1188         NS_WARNING("uninitialized");

  1189         return NS_ERROR_NOT_INITIALIZED;

  1190     }

  1192     if (!net_IsValidScheme(scheme)) {

  1193         NS_WARNING("the given url scheme contains invalid characters");

  1194         return NS_ERROR_UNEXPECTED;

  1195     }

  1197     InvalidateCache();

  1199     int32_t shift = ReplaceSegment(mScheme.mPos, mScheme.mLen, scheme);

  1201     if (shift) {

  1202         mScheme.mLen = scheme.Length();

  1203         ShiftFromAuthority(shift);

  1204     }

  1206     // ensure new scheme is lowercase

  1207     //

  1208     // XXX the string code unfortunately doesn't provide a ToLowerCase

  1209     //     that operates on a substring.

  1210     net_ToLowerCase((char *) mSpec.get(), mScheme.mLen);

  1211     return NS_OK;

  1212 }

  1214 NS_IMETHODIMP

  1215 nsStandardURL::SetUserPass(const nsACString &input)

  1216 {

  1217     ENSURE_MUTABLE();

  1219     const nsPromiseFlatCString &userpass = PromiseFlatCString(input);

  1221     LOG(("nsStandardURL::SetUserPass [userpass=%s]\n", userpass.get()));

  1223     if (mURLType == URLTYPE_NO_AUTHORITY) {

  1224         if (userpass.IsEmpty())

  1225             return NS_OK;

  1226         NS_WARNING("cannot set user:pass on no-auth url");

  1227         return NS_ERROR_UNEXPECTED;

  1228     }

  1229     if (mAuthority.mLen < 0) {

  1230         NS_WARNING("uninitialized");

  1231         return NS_ERROR_NOT_INITIALIZED;

  1232     }

  1234     InvalidateCache();

  1236     if (userpass.IsEmpty()) {

  1237         // remove user:pass

  1238         if (mUsername.mLen > 0) {

  1239             if (mPassword.mLen > 0)

  1240                 mUsername.mLen += (mPassword.mLen + 1);

  1241             mUsername.mLen++;

  1242             mSpec.Cut(mUsername.mPos, mUsername.mLen);

  1243             mAuthority.mLen -= mUsername.mLen;

  1244             ShiftFromHost(-mUsername.mLen);

  1245             mUsername.mLen = -1;

  1246             mPassword.mLen = -1;

  1247         }

  1248         return NS_OK;

  1249     }

  1251     NS_ASSERTION(mHost.mLen >= 0, "uninitialized");

  1253     nsresult rv;

  1254     uint32_t usernamePos, passwordPos;

  1255     int32_t usernameLen, passwordLen;

  1257     rv = mParser->ParseUserInfo(userpass.get(), userpass.Length(),

  1258                                 &usernamePos, &usernameLen,

  1259                                 &passwordPos, &passwordLen);

  1260     if (NS_FAILED(rv)) return rv;

  1262     // build new user:pass in |buf|

  1263     nsAutoCString buf;

  1264     if (usernameLen > 0) {

  1265         GET_SEGMENT_ENCODER(encoder);

  1266         bool ignoredOut;

  1267         usernameLen = encoder.EncodeSegmentCount(userpass.get(),

  1268                                                  URLSegment(usernamePos,

  1269                                                             usernameLen),

  1270                                                  esc_Username | esc_AlwaysCopy,

  1271                                                  buf, ignoredOut);

  1272         if (passwordLen >= 0) {

  1273             buf.Append(':');

  1274             passwordLen = encoder.EncodeSegmentCount(userpass.get(),

  1275                                                      URLSegment(passwordPos,

  1276                                                                 passwordLen),

  1277                                                      esc_Password |

  1278                                                      esc_AlwaysCopy, buf,

  1279                                                      ignoredOut);

  1280         }

  1281         if (mUsername.mLen < 0)

  1282             buf.Append('@');

  1283     }

  1285     uint32_t shift = 0;

  1287     if (mUsername.mLen < 0) {

  1288         // no existing user:pass

  1289         if (!buf.IsEmpty()) {

  1290             mSpec.Insert(buf, mHost.mPos);

  1291             mUsername.mPos = mHost.mPos;

  1292             shift = buf.Length();

  1293         }

  1294     }

  1295     else {

  1296         // replace existing user:pass

  1297         uint32_t userpassLen = mUsername.mLen;

  1298         if (mPassword.mLen >= 0)

  1299             userpassLen += (mPassword.mLen + 1);

  1300         mSpec.Replace(mUsername.mPos, userpassLen, buf);

  1301         shift = buf.Length() - userpassLen;

  1302     }

  1303     if (shift) {

  1304         ShiftFromHost(shift);

  1305         mAuthority.mLen += shift;

  1306     }

  1307     // update positions and lengths

  1308     mUsername.mLen = usernameLen;

  1309     mPassword.mLen = passwordLen;

  1310     if (passwordLen)

  1311         mPassword.mPos = mUsername.mPos + mUsername.mLen + 1;

  1312     return NS_OK;

  1313 }

  1315 NS_IMETHODIMP

  1316 nsStandardURL::SetUsername(const nsACString &input)

  1317 {

  1318     ENSURE_MUTABLE();

  1320     const nsPromiseFlatCString &username = PromiseFlatCString(input);

  1322     LOG(("nsStandardURL::SetUsername [username=%s]\n", username.get()));

  1324     if (mURLType == URLTYPE_NO_AUTHORITY) {

  1325         if (username.IsEmpty())

  1326             return NS_OK;

  1327         NS_WARNING("cannot set username on no-auth url");

  1328         return NS_ERROR_UNEXPECTED;

  1329     }

  1331     if (username.IsEmpty())

  1332         return SetUserPass(username);

  1334     InvalidateCache();

  1336     // escape username if necessary

  1337     nsAutoCString buf;

  1338     GET_SEGMENT_ENCODER(encoder);

  1339     const nsACString &escUsername =

  1340         encoder.EncodeSegment(username, esc_Username, buf);

  1342     int32_t shift;

  1344     if (mUsername.mLen < 0) {

  1345         mUsername.mPos = mAuthority.mPos;

  1346         mSpec.Insert(escUsername + NS_LITERAL_CSTRING("@"), mUsername.mPos);

  1347         shift = escUsername.Length() + 1;

  1348     }

  1349     else

  1350         shift = ReplaceSegment(mUsername.mPos, mUsername.mLen, escUsername);

  1352     if (shift) {

  1353         mUsername.mLen = escUsername.Length();

  1354         mAuthority.mLen += shift;

  1355         ShiftFromPassword(shift);

  1356     }

  1357     return NS_OK;

  1358 }

  1360 NS_IMETHODIMP

  1361 nsStandardURL::SetPassword(const nsACString &input)

  1362 {

  1363     ENSURE_MUTABLE();

  1365     const nsPromiseFlatCString &password = PromiseFlatCString(input);

  1367     LOG(("nsStandardURL::SetPassword [password=%s]\n", password.get()));

  1369     if (mURLType == URLTYPE_NO_AUTHORITY) {

  1370         if (password.IsEmpty())

  1371             return NS_OK;

  1372         NS_WARNING("cannot set password on no-auth url");

  1373         return NS_ERROR_UNEXPECTED;

  1374     }

  1375     if (mUsername.mLen <= 0) {

  1376         NS_WARNING("cannot set password without existing username");

  1377         return NS_ERROR_FAILURE;

  1378     }

  1380     InvalidateCache();

  1382     if (password.IsEmpty()) {

  1383         if (mPassword.mLen >= 0) {

  1384             // cut(":password")

  1385             mSpec.Cut(mPassword.mPos - 1, mPassword.mLen + 1);

  1386             ShiftFromHost(-(mPassword.mLen + 1));

  1387             mAuthority.mLen -= (mPassword.mLen + 1);

  1388             mPassword.mLen = -1;

  1389         }

  1390         return NS_OK;

  1391     }

  1393     // escape password if necessary

  1394     nsAutoCString buf;

  1395     GET_SEGMENT_ENCODER(encoder);

  1396     const nsACString &escPassword =

  1397         encoder.EncodeSegment(password, esc_Password, buf);

  1399     int32_t shift;

  1401     if (mPassword.mLen < 0) {

  1402         mPassword.mPos = mUsername.mPos + mUsername.mLen + 1;

  1403         mSpec.Insert(NS_LITERAL_CSTRING(":") + escPassword, mPassword.mPos - 1);

  1404         shift = escPassword.Length() + 1;

  1405     }

  1406     else

  1407         shift = ReplaceSegment(mPassword.mPos, mPassword.mLen, escPassword);

  1409     if (shift) {

  1410         mPassword.mLen = escPassword.Length();

  1411         mAuthority.mLen += shift;

  1412         ShiftFromHost(shift);

  1413     }

  1414     return NS_OK;

  1415 }

  1417 void

  1418 nsStandardURL::FindHostLimit(nsACString::const_iterator& aStart,

  1419                              nsACString::const_iterator& aEnd)

  1420 {

  1421   for (int32_t i = 0; gHostLimitDigits[i]; ++i) {

  1422     nsACString::const_iterator c(aStart);

  1423     if (FindCharInReadable(gHostLimitDigits[i], c, aEnd)) {

  1424       aEnd = c;

  1425     }

  1426   }

  1427 }

  1429 NS_IMETHODIMP

  1430 nsStandardURL::SetHostPort(const nsACString &aValue)

  1431 {

  1432     ENSURE_MUTABLE();

  1434   // We cannot simply call nsIURI::SetHost because that would treat the name as

  1435   // an IPv6 address (like http:://[server:443]/).  We also cannot call

  1436   // nsIURI::SetHostPort because that isn't implemented.  Sadfaces.

  1438   // First set the hostname.

  1439   nsACString::const_iterator start, end;

  1440   aValue.BeginReading(start);

  1441   aValue.EndReading(end);

  1442   nsACString::const_iterator iter(start);

  1444   FindHostLimit(iter, end);

  1445   FindCharInReadable(':', iter, end);

  1447   nsresult rv = SetHost(Substring(start, iter));

  1448   NS_ENSURE_SUCCESS(rv, rv);

  1450   // Also set the port if needed.

  1451   if (iter != end) {

  1452     iter++;

  1453     if (iter != end) {

  1454       nsCString portStr(Substring(iter, end));

  1455       nsresult rv;

  1456       int32_t port = portStr.ToInteger(&rv);

  1457       if (NS_SUCCEEDED(rv)) {

  1458         rv = SetPort(port);

  1459         NS_ENSURE_SUCCESS(rv, rv);

  1460       }

  1461     }

  1462   }

  1464   return NS_OK;

  1465 }

  1467 NS_IMETHODIMP

  1468 nsStandardURL::SetHost(const nsACString &input)

  1469 {

  1470     ENSURE_MUTABLE();

  1472     const nsPromiseFlatCString &hostname = PromiseFlatCString(input);

  1474     nsACString::const_iterator start, end;

  1475     hostname.BeginReading(start);

  1476     hostname.EndReading(end);

  1478     FindHostLimit(start, end);

  1480     const nsCString flat(Substring(start, end));

  1481     const char *host = flat.get();

  1483     LOG(("nsStandardURL::SetHost [host=%s]\n", host));

  1485     if (mURLType == URLTYPE_NO_AUTHORITY) {

  1486         if (flat.IsEmpty())

  1487             return NS_OK;

  1488         NS_WARNING("cannot set host on no-auth url");

  1489         return NS_ERROR_UNEXPECTED;

  1490     } else {

  1491         if (flat.IsEmpty()) {

  1492             // Setting an empty hostname is not allowed for

  1493             // URLTYPE_STANDARD and URLTYPE_AUTHORITY.

  1494             return NS_ERROR_UNEXPECTED;

  1495         }

  1496     }

  1498     if (strlen(host) < flat.Length())

  1499         return NS_ERROR_MALFORMED_URI; // found embedded null

  1501     // For consistency with SetSpec/nsURLParsers, don't allow spaces

  1502     // in the hostname.

  1503     if (strchr(host, ' '))

  1504         return NS_ERROR_MALFORMED_URI;

  1506     InvalidateCache();

  1507     mHostEncoding = eEncoding_ASCII;

  1509     if (!*host) {

  1510         // remove existing hostname

  1511         if (mHost.mLen > 0) {

  1512             // remove entire authority

  1513             mSpec.Cut(mAuthority.mPos, mAuthority.mLen);

  1514             ShiftFromPath(-mAuthority.mLen);

  1515             mAuthority.mLen = 0;

  1516             mUsername.mLen = -1;

  1517             mPassword.mLen = -1;

  1518             mHost.mLen = -1;

  1519             mPort = -1;

  1520         }

  1521         return NS_OK;

  1522     }

  1524     // handle IPv6 unescaped address literal

  1525     int32_t len;

  1526     nsAutoCString hostBuf;

  1527     if (EscapeIPv6(host, hostBuf)) {

  1528         host = hostBuf.get();

  1529         len = hostBuf.Length();

  1530     }

  1531     else if (NormalizeIDN(flat, hostBuf)) {

  1532         host = hostBuf.get();

  1533         len = hostBuf.Length();

  1534     }

  1535     else

  1536         len = flat.Length();

  1538     if (mHost.mLen < 0) {

  1539         int port_length = 0;

  1540         if (mPort != -1) {

  1541             nsAutoCString buf;

  1542             buf.Assign(':');

  1543             buf.AppendInt(mPort);

  1544             port_length = buf.Length();

  1545         }

  1546         if (mAuthority.mLen > 0) {

  1547             mHost.mPos = mAuthority.mPos + mAuthority.mLen - port_length;

  1548             mHost.mLen = 0;

  1549         } else if (mScheme.mLen > 0) {

  1550             mHost.mPos = mScheme.mPos + mScheme.mLen + 3;

  1551             mHost.mLen = 0;

  1552         }

  1553     }

  1555     int32_t shift = ReplaceSegment(mHost.mPos, mHost.mLen, host, len);

  1557     if (shift) {

  1558         mHost.mLen = len;

  1559         mAuthority.mLen += shift;

  1560         ShiftFromPath(shift);

  1561     }

  1563     // Now canonicalize the host to lowercase

  1564     net_ToLowerCase(mSpec.BeginWriting() + mHost.mPos, mHost.mLen);

  1566     return NS_OK;

  1567 }

  1569 NS_IMETHODIMP

  1570 nsStandardURL::SetPort(int32_t port)

  1571 {

  1572     ENSURE_MUTABLE();

  1574     LOG(("nsStandardURL::SetPort [port=%d]\n", port));

  1576     if ((port == mPort) || (mPort == -1 && port == mDefaultPort))

  1577         return NS_OK;

  1579     // ports must be >= 0

  1580     if (port < -1) // -1 == use default

  1581         return NS_ERROR_MALFORMED_URI;

  1583     if (mURLType == URLTYPE_NO_AUTHORITY) {

  1584         NS_WARNING("cannot set port on no-auth url");

  1585         return NS_ERROR_UNEXPECTED;

  1586     }

  1588     InvalidateCache();

  1590     if (mPort == -1) {

  1591         // need to insert the port number in the URL spec

  1592         nsAutoCString buf;

  1593         buf.Assign(':');

  1594         buf.AppendInt(port);

  1595         mSpec.Insert(buf, mAuthority.mPos + mAuthority.mLen);

  1596         mAuthority.mLen += buf.Length();

  1597         ShiftFromPath(buf.Length());

  1598     }

  1599     else if (port == -1 || port == mDefaultPort) {

  1600         // Don't allow mPort == mDefaultPort

  1601         port = -1;

  1603         // compute length of the current port

  1604         nsAutoCString buf;

  1605         buf.Assign(':');

  1606         buf.AppendInt(mPort);

  1608         // need to remove the port number from the URL spec

  1609         uint32_t start = mAuthority.mPos + mAuthority.mLen - buf.Length();

  1610         int32_t lengthToCut = buf.Length();

  1611         mSpec.Cut(start, lengthToCut);

  1612         mAuthority.mLen -= lengthToCut;

  1613         ShiftFromPath(-lengthToCut);

  1614     }

  1615     else {

  1616         // need to replace the existing port

  1617         nsAutoCString buf;

  1618         buf.Assign(':');

  1619         buf.AppendInt(mPort);

  1620         uint32_t start = mAuthority.mPos + mAuthority.mLen - buf.Length();

  1621         uint32_t length = buf.Length();

  1623         buf.Assign(':');

  1624         buf.AppendInt(port);

  1625         mSpec.Replace(start, length, buf);

  1626         if (buf.Length() != length) {

  1627             mAuthority.mLen += buf.Length() - length;

  1628             ShiftFromPath(buf.Length() - length);

  1629         }

  1630     }

  1632     mPort = port;

  1633     return NS_OK;

  1634 }

  1636 NS_IMETHODIMP

  1637 nsStandardURL::SetPath(const nsACString &input)

  1638 {

  1639     ENSURE_MUTABLE();

  1641     const nsPromiseFlatCString &path = PromiseFlatCString(input);

  1642     LOG(("nsStandardURL::SetPath [path=%s]\n", path.get()));

  1644     InvalidateCache();

  1646     if (!path.IsEmpty()) {

  1647         nsAutoCString spec;

  1649         spec.Assign(mSpec.get(), mPath.mPos);

  1650         if (path.First() != '/')

  1651             spec.Append('/');

  1652         spec.Append(path);

  1654         return SetSpec(spec);

  1655     }

  1656     else if (mPath.mLen >= 1) {

  1657         mSpec.Cut(mPath.mPos + 1, mPath.mLen - 1);

  1658         // these contain only a '/'

  1659         mPath.mLen = 1;

  1660         mDirectory.mLen = 1;

  1661         mFilepath.mLen = 1;

  1662         // these are no longer defined

  1663         mBasename.mLen = -1;

  1664         mExtension.mLen = -1;

  1665         mQuery.mLen = -1;

  1666         mRef.mLen = -1;

  1667     }

  1668     return NS_OK;

  1669 }

  1671 NS_IMETHODIMP

  1672 nsStandardURL::Equals(nsIURI *unknownOther, bool *result)

  1673 {

  1674     return EqualsInternal(unknownOther, eHonorRef, result);

  1675 }

  1677 NS_IMETHODIMP

  1678 nsStandardURL::EqualsExceptRef(nsIURI *unknownOther, bool *result)

  1679 {

  1680     return EqualsInternal(unknownOther, eIgnoreRef, result);

  1681 }

  1683 nsresult

  1684 nsStandardURL::EqualsInternal(nsIURI *unknownOther,

  1685                               nsStandardURL::RefHandlingEnum refHandlingMode,

  1686                               bool *result)

  1687 {

  1688     NS_ENSURE_ARG_POINTER(unknownOther);

  1689     NS_PRECONDITION(result, "null pointer");

  1691     nsRefPtr<nsStandardURL> other;

  1692     nsresult rv = unknownOther->QueryInterface(kThisImplCID,

  1693                                                getter_AddRefs(other));

  1694     if (NS_FAILED(rv)) {

  1695         *result = false;

  1696         return NS_OK;

  1697     }

  1699     // First, check whether one URIs is an nsIFileURL while the other

  1700     // is not.  If that's the case, they're different.

  1701     if (mSupportsFileURL != other->mSupportsFileURL) {

  1702         *result = false;

  1703         return NS_OK;

  1704     }

  1706     // Next check parts of a URI that, if different, automatically make the

  1707     // URIs different

  1708     if (!SegmentIs(mScheme, other->mSpec.get(), other->mScheme) ||

  1709         // Check for host manually, since conversion to file will

  1710         // ignore the host!

  1711         !SegmentIs(mHost, other->mSpec.get(), other->mHost) ||

  1712         !SegmentIs(mQuery, other->mSpec.get(), other->mQuery) ||

  1713         !SegmentIs(mUsername, other->mSpec.get(), other->mUsername) ||

  1714         !SegmentIs(mPassword, other->mSpec.get(), other->mPassword) ||

  1715         Port() != other->Port()) {

  1716         // No need to compare files or other URI parts -- these are different

  1717         // beasties

  1718         *result = false;

  1719         return NS_OK;

  1720     }

  1722     if (refHandlingMode == eHonorRef &&

  1723         !SegmentIs(mRef, other->mSpec.get(), other->mRef)) {

  1724         *result = false;

  1725         return NS_OK;

  1726     }

  1728     // Then check for exact identity of URIs.  If we have it, they're equal

  1729     if (SegmentIs(mDirectory, other->mSpec.get(), other->mDirectory) &&

  1730         SegmentIs(mBasename, other->mSpec.get(), other->mBasename) &&

  1731         SegmentIs(mExtension, other->mSpec.get(), other->mExtension)) {

  1732         *result = true;

  1733         return NS_OK;

  1734     }

  1736     // At this point, the URIs are not identical, but they only differ in the

  1737     // directory/filename/extension.  If these are file URLs, then get the

  1738     // corresponding file objects and compare those, since two filenames that

  1739     // differ, eg, only in case could still be equal.

  1740     if (mSupportsFileURL) {

  1741         // Assume not equal for failure cases... but failures in GetFile are

  1742         // really failures, more or less, so propagate them to caller.

  1743         *result = false;

  1745         rv = EnsureFile();

  1746         nsresult rv2 = other->EnsureFile();

  1747         // special case for resource:// urls that don't resolve to files

  1748         if (rv == NS_ERROR_NO_INTERFACE && rv == rv2)

  1749             return NS_OK;

  1751         if (NS_FAILED(rv)) {

  1752             LOG(("nsStandardURL::Equals [this=%p spec=%s] failed to ensure file",

  1753                 this, mSpec.get()));

  1754             return rv;

  1755         }

  1756         NS_ASSERTION(mFile, "EnsureFile() lied!");

  1757         rv = rv2;

  1758         if (NS_FAILED(rv)) {

  1759             LOG(("nsStandardURL::Equals [other=%p spec=%s] other failed to ensure file",

  1760                  other.get(), other->mSpec.get()));

  1761             return rv;

  1762         }

  1763         NS_ASSERTION(other->mFile, "EnsureFile() lied!");

  1764         return mFile->Equals(other->mFile, result);

  1765     }

  1767     // The URLs are not identical, and they do not correspond to the

  1768     // same file, so they are different.

  1769     *result = false;

  1771     return NS_OK;

  1772 }

  1774 NS_IMETHODIMP

  1775 nsStandardURL::SchemeIs(const char *scheme, bool *result)

  1776 {

  1777     NS_PRECONDITION(result, "null pointer");

  1779     *result = SegmentIs(mScheme, scheme);

  1780     return NS_OK;

  1781 }

  1783 /* virtual */ nsStandardURL*

  1784 nsStandardURL::StartClone()

  1785 {

  1786     nsStandardURL *clone = new nsStandardURL();

  1787     return clone;

  1788 }

  1790 NS_IMETHODIMP

  1791 nsStandardURL::Clone(nsIURI **result)

  1792 {

  1793     return CloneInternal(eHonorRef, result);

  1794 }

  1797 NS_IMETHODIMP

  1798 nsStandardURL::CloneIgnoringRef(nsIURI **result)

  1799 {

  1800     return CloneInternal(eIgnoreRef, result);

  1801 }

  1803 nsresult

  1804 nsStandardURL::CloneInternal(nsStandardURL::RefHandlingEnum refHandlingMode,

  1805                              nsIURI **result)

  1807 {

  1808     nsRefPtr<nsStandardURL> clone = StartClone();

  1809     if (!clone)

  1810         return NS_ERROR_OUT_OF_MEMORY;

  1812     clone->mSpec = mSpec;

  1813     clone->mDefaultPort = mDefaultPort;

  1814     clone->mPort = mPort;

  1815     clone->mScheme = mScheme;

  1816     clone->mAuthority = mAuthority;

  1817     clone->mUsername = mUsername;

  1818     clone->mPassword = mPassword;

  1819     clone->mHost = mHost;

  1820     clone->mPath = mPath;

  1821     clone->mFilepath = mFilepath;

  1822     clone->mDirectory = mDirectory;

  1823     clone->mBasename = mBasename;

  1824     clone->mExtension = mExtension;

  1825     clone->mQuery = mQuery;

  1826     clone->mRef = mRef;

  1827     clone->mOriginCharset = mOriginCharset;

  1828     clone->mURLType = mURLType;

  1829     clone->mParser = mParser;

  1830     clone->mFile = mFile;

  1831     clone->mHostA = mHostA ? strdup(mHostA) : nullptr;

  1832     clone->mMutable = true;

  1833     clone->mSupportsFileURL = mSupportsFileURL;

  1834     clone->mHostEncoding = mHostEncoding;

  1835     clone->mSpecEncoding = mSpecEncoding;

  1837     if (refHandlingMode == eIgnoreRef) {

  1838         clone->SetRef(EmptyCString());

  1839     }

  1841     clone.forget(result);

  1842     return NS_OK;

  1843 }

  1845 NS_IMETHODIMP

  1846 nsStandardURL::Resolve(const nsACString &in, nsACString &out)

  1847 {

  1848     const nsPromiseFlatCString &flat = PromiseFlatCString(in);

  1849     const char *relpath = flat.get();

  1851     // filter out unexpected chars "\r\n\t" if necessary

  1852     nsAutoCString buf;

  1853     int32_t relpathLen;

  1854     if (net_FilterURIString(relpath, buf)) {

  1855         relpath = buf.get();

  1856         relpathLen = buf.Length();

  1857     } else

  1858         relpathLen = flat.Length();

  1860     char *result = nullptr;

  1862     LOG(("nsStandardURL::Resolve [this=%p spec=%s relpath=%s]\n",

  1863         this, mSpec.get(), relpath));

  1865     NS_ASSERTION(mParser, "no parser: unitialized");

  1867     // NOTE: there is no need for this function to produce normalized

  1868     // output.  normalization will occur when the result is used to

  1869     // initialize a nsStandardURL object.

  1871     if (mScheme.mLen < 0) {

  1872         NS_WARNING("unable to Resolve URL: this URL not initialized");

  1873         return NS_ERROR_NOT_INITIALIZED;

  1874     }

  1876     nsresult rv;

  1877     URLSegment scheme;

  1878     char *resultPath = nullptr;

  1879     bool relative = false;

  1880     uint32_t offset = 0;

  1881     netCoalesceFlags coalesceFlag = NET_COALESCE_NORMAL;

  1883     // relative urls should never contain a host, so we always want to use

  1884     // the noauth url parser.

  1885     // use it to extract a possible scheme

  1886     rv = mParser->ParseURL(relpath,

  1887                            relpathLen,

  1888                            &scheme.mPos, &scheme.mLen,

  1889                            nullptr, nullptr,

  1890                            nullptr, nullptr);

  1892     // if the parser fails (for example because there is no valid scheme)

  1893     // reset the scheme and assume a relative url

  1894     if (NS_FAILED(rv)) scheme.Reset();

  1896     if (scheme.mLen >= 0) {

  1897         // add some flags to coalesceFlag if it is an ftp-url

  1898         // need this later on when coalescing the resulting URL

  1899         if (SegmentIs(relpath, scheme, "ftp", true)) {

  1900             coalesceFlag = (netCoalesceFlags) (coalesceFlag

  1901                                         | NET_COALESCE_ALLOW_RELATIVE_ROOT

  1902                                         | NET_COALESCE_DOUBLE_SLASH_IS_ROOT);

  1904         }

  1905         // this URL appears to be absolute

  1906         // but try to find out more

  1907         if (SegmentIs(mScheme, relpath, scheme, true)) {

  1908             // mScheme and Scheme are the same

  1909             // but this can still be relative

  1910             if (nsCRT::strncmp(relpath + scheme.mPos + scheme.mLen,

  1911                                "://",3) == 0) {

  1912                 // now this is really absolute

  1913                 // because a :// follows the scheme

  1914                 result = NS_strdup(relpath);

  1915             } else {

  1916                 // This is a deprecated form of relative urls like

  1917                 // http:file or http:/path/file

  1918                 // we will support it for now ...

  1919                 relative = true;

  1920                 offset = scheme.mLen + 1;

  1921             }

  1922         } else {

  1923             // the schemes are not the same, we are also done

  1924             // because we have to assume this is absolute

  1925             result = NS_strdup(relpath);

  1926         }

  1927     } else {

  1928         // add some flags to coalesceFlag if it is an ftp-url

  1929         // need this later on when coalescing the resulting URL

  1930         if (SegmentIs(mScheme,"ftp")) {

  1931             coalesceFlag = (netCoalesceFlags) (coalesceFlag

  1932                                         | NET_COALESCE_ALLOW_RELATIVE_ROOT

  1933                                         | NET_COALESCE_DOUBLE_SLASH_IS_ROOT);

  1934         }

  1935         if (relpath[0] == '/' && relpath[1] == '/') {

  1936             // this URL //host/path is almost absolute

  1937             result = AppendToSubstring(mScheme.mPos, mScheme.mLen + 1, relpath);

  1938         } else {

  1939             // then it must be relative

  1940             relative = true;

  1941         }

  1942     }

  1943     if (relative) {

  1944         uint32_t len = 0;

  1945         const char *realrelpath = relpath + offset;

  1946         switch (*realrelpath) {

  1947         case '/':

  1948             // overwrite everything after the authority

  1949             len = mAuthority.mPos + mAuthority.mLen;

  1950             break;

  1951         case '?':

  1952             // overwrite the existing ?query and #ref

  1953             if (mQuery.mLen >= 0)

  1954                 len = mQuery.mPos - 1;

  1955             else if (mRef.mLen >= 0)

  1956                 len = mRef.mPos - 1;

  1957             else

  1958                 len = mPath.mPos + mPath.mLen;

  1959             break;

  1960         case '#':

  1961         case '\0':

  1962             // overwrite the existing #ref

  1963             if (mRef.mLen < 0)

  1964                 len = mPath.mPos + mPath.mLen;

  1965             else

  1966                 len = mRef.mPos - 1;

  1967             break;

  1968         default:

  1969             if (coalesceFlag & NET_COALESCE_DOUBLE_SLASH_IS_ROOT) {

  1970                 if (Filename().Equals(NS_LITERAL_CSTRING("%2F"),

  1971                                       nsCaseInsensitiveCStringComparator())) {

  1972                     // if ftp URL ends with %2F then simply

  1973                     // append relative part because %2F also

  1974                     // marks the root directory with ftp-urls

  1975                     len = mFilepath.mPos + mFilepath.mLen;

  1976                 } else {

  1977                     // overwrite everything after the directory

  1978                     len = mDirectory.mPos + mDirectory.mLen;

  1979                 }

  1980             } else {

  1981                 // overwrite everything after the directory

  1982                 len = mDirectory.mPos + mDirectory.mLen;

  1983             }

  1984         }

  1985         result = AppendToSubstring(0, len, realrelpath);

  1986         // locate result path

  1987         resultPath = result + mPath.mPos;

  1988     }

  1989     if (!result)

  1990         return NS_ERROR_OUT_OF_MEMORY;

  1992     if (resultPath)

  1993         net_CoalesceDirs(coalesceFlag, resultPath);

  1994     else {

  1995         // locate result path

  1996         resultPath = PL_strstr(result, "://");

  1997         if (resultPath) {

  1998             resultPath = PL_strchr(resultPath + 3, '/');

  1999             if (resultPath)

  2000                 net_CoalesceDirs(coalesceFlag,resultPath);

  2001         }

  2002     }

  2003     out.Adopt(result);

  2004     return NS_OK;

  2005 }

  2007 // result may contain unescaped UTF-8 characters

  2008 NS_IMETHODIMP

  2009 nsStandardURL::GetCommonBaseSpec(nsIURI *uri2, nsACString &aResult)

  2010 {

  2011     NS_ENSURE_ARG_POINTER(uri2);

  2013     // if uri's are equal, then return uri as is

  2014     bool isEquals = false;

  2015     if (NS_SUCCEEDED(Equals(uri2, &isEquals)) && isEquals)

  2016         return GetSpec(aResult);

  2018     aResult.Truncate();

  2020     // check pre-path; if they don't match, then return empty string

  2021     nsStandardURL *stdurl2;

  2022     nsresult rv = uri2->QueryInterface(kThisImplCID, (void **) &stdurl2);

  2023     isEquals = NS_SUCCEEDED(rv)

  2024             && SegmentIs(mScheme, stdurl2->mSpec.get(), stdurl2->mScheme)

  2025             && SegmentIs(mHost, stdurl2->mSpec.get(), stdurl2->mHost)

  2026             && SegmentIs(mUsername, stdurl2->mSpec.get(), stdurl2->mUsername)

  2027             && SegmentIs(mPassword, stdurl2->mSpec.get(), stdurl2->mPassword)

  2028             && (Port() == stdurl2->Port());

  2029     if (!isEquals)

  2030     {

  2031         if (NS_SUCCEEDED(rv))

  2032             NS_RELEASE(stdurl2);

  2033         return NS_OK;

  2034     }

  2036     // scan for first mismatched character

  2037     const char *thisIndex, *thatIndex, *startCharPos;

  2038     startCharPos = mSpec.get() + mDirectory.mPos;

  2039     thisIndex = startCharPos;

  2040     thatIndex = stdurl2->mSpec.get() + mDirectory.mPos;

  2041     while ((*thisIndex == *thatIndex) && *thisIndex)

  2042     {

  2043         thisIndex++;

  2044         thatIndex++;

  2045     }

  2047     // backup to just after previous slash so we grab an appropriate path

  2048     // segment such as a directory (not partial segments)

  2049     // todo:  also check for file matches which include '?' and '#'

  2050     while ((thisIndex != startCharPos) && (*(thisIndex-1) != '/'))

  2051         thisIndex--;

  2053     // grab spec from beginning to thisIndex

  2054     aResult = Substring(mSpec, mScheme.mPos, thisIndex - mSpec.get());

  2056     NS_RELEASE(stdurl2);

  2057     return rv;

  2058 }

  2060 NS_IMETHODIMP

  2061 nsStandardURL::GetRelativeSpec(nsIURI *uri2, nsACString &aResult)

  2062 {

  2063     NS_ENSURE_ARG_POINTER(uri2);

  2065     aResult.Truncate();

  2067     // if uri's are equal, then return empty string

  2068     bool isEquals = false;

  2069     if (NS_SUCCEEDED(Equals(uri2, &isEquals)) && isEquals)

  2070         return NS_OK;

  2072     nsStandardURL *stdurl2;

  2073     nsresult rv = uri2->QueryInterface(kThisImplCID, (void **) &stdurl2);

  2074     isEquals = NS_SUCCEEDED(rv)

  2075             && SegmentIs(mScheme, stdurl2->mSpec.get(), stdurl2->mScheme)

  2076             && SegmentIs(mHost, stdurl2->mSpec.get(), stdurl2->mHost)

  2077             && SegmentIs(mUsername, stdurl2->mSpec.get(), stdurl2->mUsername)

  2078             && SegmentIs(mPassword, stdurl2->mSpec.get(), stdurl2->mPassword)

  2079             && (Port() == stdurl2->Port());

  2080     if (!isEquals)

  2081     {

  2082         if (NS_SUCCEEDED(rv))

  2083             NS_RELEASE(stdurl2);

  2085         return uri2->GetSpec(aResult);

  2086     }

  2088     // scan for first mismatched character

  2089     const char *thisIndex, *thatIndex, *startCharPos;

  2090     startCharPos = mSpec.get() + mDirectory.mPos;

  2091     thisIndex = startCharPos;

  2092     thatIndex = stdurl2->mSpec.get() + mDirectory.mPos;

  2094 #ifdef XP_WIN

  2095     bool isFileScheme = SegmentIs(mScheme, "file");

  2096     if (isFileScheme)

  2097     {

  2098         // on windows, we need to match the first segment of the path

  2099         // if these don't match then we need to return an absolute path

  2100         // skip over any leading '/' in path

  2101         while ((*thisIndex == *thatIndex) && (*thisIndex == '/'))

  2102         {

  2103             thisIndex++;

  2104             thatIndex++;

  2105         }

  2106         // look for end of first segment

  2107         while ((*thisIndex == *thatIndex) && *thisIndex && (*thisIndex != '/'))

  2108         {

  2109             thisIndex++;

  2110             thatIndex++;

  2111         }

  2113         // if we didn't match through the first segment, return absolute path

  2114         if ((*thisIndex != '/') || (*thatIndex != '/'))

  2115         {

  2116             NS_RELEASE(stdurl2);

  2117             return uri2->GetSpec(aResult);

  2118         }

  2119     }

  2120 #endif

  2122     while ((*thisIndex == *thatIndex) && *thisIndex)

  2123     {

  2124         thisIndex++;

  2125         thatIndex++;

  2126     }

  2128     // backup to just after previous slash so we grab an appropriate path

  2129     // segment such as a directory (not partial segments)

  2130     // todo:  also check for file matches with '#' and '?'

  2131     while ((*(thatIndex-1) != '/') && (thatIndex != startCharPos))

  2132         thatIndex--;

  2134     const char *limit = mSpec.get() + mFilepath.mPos + mFilepath.mLen;

  2136     // need to account for slashes and add corresponding "../"

  2137     for (; thisIndex <= limit && *thisIndex; ++thisIndex)

  2138     {

  2139         if (*thisIndex == '/')

  2140             aResult.AppendLiteral("../");

  2141     }

  2143     // grab spec from thisIndex to end

  2144     uint32_t startPos = stdurl2->mScheme.mPos + thatIndex - stdurl2->mSpec.get();

  2145     aResult.Append(Substring(stdurl2->mSpec, startPos,

  2146                              stdurl2->mSpec.Length() - startPos));

  2148     NS_RELEASE(stdurl2);

  2149     return rv;

  2150 }

  2152 //----------------------------------------------------------------------------

  2153 // nsStandardURL::nsIURL

  2154 //----------------------------------------------------------------------------

  2156 // result may contain unescaped UTF-8 characters

  2157 NS_IMETHODIMP

  2158 nsStandardURL::GetFilePath(nsACString &result)

  2159 {

  2160     result = Filepath();

  2161     return NS_OK;

  2162 }

  2164 // result may contain unescaped UTF-8 characters

  2165 NS_IMETHODIMP

  2166 nsStandardURL::GetQuery(nsACString &result)

  2167 {

  2168     result = Query();

  2169     return NS_OK;

  2170 }

  2172 // result may contain unescaped UTF-8 characters

  2173 NS_IMETHODIMP

  2174 nsStandardURL::GetRef(nsACString &result)

  2175 {

  2176     result = Ref();

  2177     return NS_OK;

  2178 }

  2180 NS_IMETHODIMP

  2181 nsStandardURL::GetHasRef(bool *result)

  2182 {

  2183     *result = (mRef.mLen >= 0);

  2184     return NS_OK;

  2185 }

  2187 // result may contain unescaped UTF-8 characters

  2188 NS_IMETHODIMP

  2189 nsStandardURL::GetDirectory(nsACString &result)

  2190 {

  2191     result = Directory();

  2192     return NS_OK;

  2193 }

  2195 // result may contain unescaped UTF-8 characters

  2196 NS_IMETHODIMP

  2197 nsStandardURL::GetFileName(nsACString &result)

  2198 {

  2199     result = Filename();

  2200     return NS_OK;

  2201 }

  2203 // result may contain unescaped UTF-8 characters

  2204 NS_IMETHODIMP

  2205 nsStandardURL::GetFileBaseName(nsACString &result)

  2206 {

  2207     result = Basename();

  2208     return NS_OK;

  2209 }

  2211 // result may contain unescaped UTF-8 characters

  2212 NS_IMETHODIMP

  2213 nsStandardURL::GetFileExtension(nsACString &result)

  2214 {

  2215     result = Extension();

  2216     return NS_OK;

  2217 }

  2219 NS_IMETHODIMP

  2220 nsStandardURL::SetFilePath(const nsACString &input)

  2221 {

  2222     ENSURE_MUTABLE();

  2224     const nsPromiseFlatCString &flat = PromiseFlatCString(input);

  2225     const char *filepath = flat.get();

  2227     LOG(("nsStandardURL::SetFilePath [filepath=%s]\n", filepath));

  2229     // if there isn't a filepath, then there can't be anything

  2230     // after the path either.  this url is likely uninitialized.

  2231     if (mFilepath.mLen < 0)

  2232         return SetPath(flat);

  2234     if (filepath && *filepath) {

  2235         nsAutoCString spec;

  2236         uint32_t dirPos, basePos, extPos;

  2237         int32_t dirLen, baseLen, extLen;

  2238         nsresult rv;

  2240         rv = mParser->ParseFilePath(filepath, -1,

  2241                                     &dirPos, &dirLen,

  2242                                     &basePos, &baseLen,

  2243                                     &extPos, &extLen);

  2244         if (NS_FAILED(rv)) return rv;

  2246         // build up new candidate spec

  2247         spec.Assign(mSpec.get(), mPath.mPos);

  2249         // ensure leading '/'

  2250         if (filepath[dirPos] != '/')

  2251             spec.Append('/');

  2253         GET_SEGMENT_ENCODER(encoder);

  2255         // append encoded filepath components

  2256         if (dirLen > 0)

  2257             encoder.EncodeSegment(Substring(filepath + dirPos,

  2258                                             filepath + dirPos + dirLen),

  2259                                   esc_Directory | esc_AlwaysCopy, spec);

  2260         if (baseLen > 0)

  2261             encoder.EncodeSegment(Substring(filepath + basePos,

  2262                                             filepath + basePos + baseLen),

  2263                                   esc_FileBaseName | esc_AlwaysCopy, spec);

  2264         if (extLen >= 0) {

  2265             spec.Append('.');

  2266             if (extLen > 0)

  2267                 encoder.EncodeSegment(Substring(filepath + extPos,

  2268                                                 filepath + extPos + extLen),

  2269                                       esc_FileExtension | esc_AlwaysCopy,

  2270                                       spec);

  2271         }

  2273         // compute the ending position of the current filepath

  2274         if (mFilepath.mLen >= 0) {

  2275             uint32_t end = mFilepath.mPos + mFilepath.mLen;

  2276             if (mSpec.Length() > end)

  2277                 spec.Append(mSpec.get() + end, mSpec.Length() - end);

  2278         }

  2280         return SetSpec(spec);

  2281     }

  2282     else if (mPath.mLen > 1) {

  2283         mSpec.Cut(mPath.mPos + 1, mFilepath.mLen - 1);

  2284         // left shift query, and ref

  2285         ShiftFromQuery(1 - mFilepath.mLen);

  2286         // these contain only a '/'

  2287         mPath.mLen = 1;

  2288         mDirectory.mLen = 1;

  2289         mFilepath.mLen = 1;

  2290         // these are no longer defined

  2291         mBasename.mLen = -1;

  2292         mExtension.mLen = -1;

  2293     }

  2294     return NS_OK;

  2295 }

  2297 NS_IMETHODIMP

  2298 nsStandardURL::SetQuery(const nsACString &input)

  2299 {

  2300     ENSURE_MUTABLE();

  2302     const nsPromiseFlatCString &flat = PromiseFlatCString(input);

  2303     const char *query = flat.get();

  2305     LOG(("nsStandardURL::SetQuery [query=%s]\n", query));

  2307     if (mPath.mLen < 0)

  2308         return SetPath(flat);

  2310     InvalidateCache();

  2312     if (!query || !*query) {

  2313         // remove existing query

  2314         if (mQuery.mLen >= 0) {

  2315             // remove query and leading '?'

  2316             mSpec.Cut(mQuery.mPos - 1, mQuery.mLen + 1);

  2317             ShiftFromRef(-(mQuery.mLen + 1));

  2318             mPath.mLen -= (mQuery.mLen + 1);

  2319             mQuery.mPos = 0;

  2320             mQuery.mLen = -1;

  2321         }

  2322         return NS_OK;

  2323     }

  2325     int32_t queryLen = strlen(query);

  2326     if (query[0] == '?') {

  2327         query++;

  2328         queryLen--;

  2329     }

  2331     if (mQuery.mLen < 0) {

  2332         if (mRef.mLen < 0)

  2333             mQuery.mPos = mSpec.Length();

  2334         else

  2335             mQuery.mPos = mRef.mPos - 1;

  2336         mSpec.Insert('?', mQuery.mPos);

  2337         mQuery.mPos++;

  2338         mQuery.mLen = 0;

  2339         // the insertion pushes these out by 1

  2340         mPath.mLen++;

  2341         mRef.mPos++;

  2342     }

  2344     // encode query if necessary

  2345     nsAutoCString buf;

  2346     bool encoded;

  2347     GET_QUERY_ENCODER(encoder);

  2348     encoder.EncodeSegmentCount(query, URLSegment(0, queryLen), esc_Query,

  2349                                buf, encoded);

  2350     if (encoded) {

  2351         query = buf.get();

  2352         queryLen = buf.Length();

  2353     }

  2355     int32_t shift = ReplaceSegment(mQuery.mPos, mQuery.mLen, query, queryLen);

  2357     if (shift) {

  2358         mQuery.mLen = queryLen;

  2359         mPath.mLen += shift;

  2360         ShiftFromRef(shift);

  2361     }

  2362     return NS_OK;

  2363 }

  2365 NS_IMETHODIMP

  2366 nsStandardURL::SetRef(const nsACString &input)

  2367 {

  2368     ENSURE_MUTABLE();

  2370     const nsPromiseFlatCString &flat = PromiseFlatCString(input);

  2371     const char *ref = flat.get();

  2373     LOG(("nsStandardURL::SetRef [ref=%s]\n", ref));

  2375     if (mPath.mLen < 0)

  2376         return SetPath(flat);

  2378     InvalidateCache();

  2380     if (!ref || !*ref) {

  2381         // remove existing ref

  2382         if (mRef.mLen >= 0) {

  2383             // remove ref and leading '#'

  2384             mSpec.Cut(mRef.mPos - 1, mRef.mLen + 1);

  2385             mPath.mLen -= (mRef.mLen + 1);

  2386             mRef.mPos = 0;

  2387             mRef.mLen = -1;

  2388         }

  2389         return NS_OK;

  2390     }

  2392     int32_t refLen = strlen(ref);

  2393     if (ref[0] == '#') {

  2394         ref++;

  2395         refLen--;

  2396     }

  2398     if (mRef.mLen < 0) {

  2399         mSpec.Append('#');

  2400         ++mPath.mLen;  // Include the # in the path.

  2401         mRef.mPos = mSpec.Length();

  2402         mRef.mLen = 0;

  2403     }

  2405     // encode ref if necessary

  2406     nsAutoCString buf;

  2407     bool encoded;

  2408     GET_SEGMENT_ENCODER(encoder);

  2409     encoder.EncodeSegmentCount(ref, URLSegment(0, refLen), esc_Ref,

  2410                                buf, encoded);

  2411     if (encoded) {

  2412         ref = buf.get();

  2413         refLen = buf.Length();

  2414     }

  2416     int32_t shift = ReplaceSegment(mRef.mPos, mRef.mLen, ref, refLen);

  2417     mPath.mLen += shift;

  2418     mRef.mLen = refLen;

  2419     return NS_OK;

  2420 }

  2422 NS_IMETHODIMP

  2423 nsStandardURL::SetDirectory(const nsACString &input)

  2424 {

  2425     NS_NOTYETIMPLEMENTED("");

  2426     return NS_ERROR_NOT_IMPLEMENTED;

  2427 }

  2429 NS_IMETHODIMP

  2430 nsStandardURL::SetFileName(const nsACString &input)

  2431 {

  2432     ENSURE_MUTABLE();

  2434     const nsPromiseFlatCString &flat = PromiseFlatCString(input);

  2435     const char *filename = flat.get();

  2437     LOG(("nsStandardURL::SetFileName [filename=%s]\n", filename));

  2439     if (mPath.mLen < 0)

  2440         return SetPath(flat);

  2442     int32_t shift = 0;

  2444     if (!(filename && *filename)) {

  2445         // remove the filename

  2446         if (mBasename.mLen > 0) {

  2447             if (mExtension.mLen >= 0)

  2448                 mBasename.mLen += (mExtension.mLen + 1);

  2449             mSpec.Cut(mBasename.mPos, mBasename.mLen);

  2450             shift = -mBasename.mLen;

  2451             mBasename.mLen = 0;

  2452             mExtension.mLen = -1;

  2453         }

  2454     }

  2455     else {

  2456         nsresult rv;

  2457         URLSegment basename, extension;

  2459         // let the parser locate the basename and extension

  2460         rv = mParser->ParseFileName(filename, -1,

  2461                                     &basename.mPos, &basename.mLen,

  2462                                     &extension.mPos, &extension.mLen);

  2463         if (NS_FAILED(rv)) return rv;

  2465         if (basename.mLen < 0) {

  2466             // remove existing filename

  2467             if (mBasename.mLen >= 0) {

  2468                 uint32_t len = mBasename.mLen;

  2469                 if (mExtension.mLen >= 0)

  2470                     len += (mExtension.mLen + 1);

  2471                 mSpec.Cut(mBasename.mPos, len);

  2472                 shift = -int32_t(len);

  2473                 mBasename.mLen = 0;

  2474                 mExtension.mLen = -1;

  2475             }

  2476         }

  2477         else {

  2478             nsAutoCString newFilename;

  2479             bool ignoredOut;

  2480             GET_SEGMENT_ENCODER(encoder);

  2481             basename.mLen = encoder.EncodeSegmentCount(filename, basename,

  2482                                                        esc_FileBaseName |

  2483                                                        esc_AlwaysCopy,

  2484                                                        newFilename,

  2485                                                        ignoredOut);

  2486             if (extension.mLen >= 0) {

  2487                 newFilename.Append('.');

  2488                 extension.mLen = encoder.EncodeSegmentCount(filename, extension,

  2489                                                             esc_FileExtension |

  2490                                                             esc_AlwaysCopy,

  2491                                                             newFilename,

  2492                                                             ignoredOut);

  2493             }

  2495             if (mBasename.mLen < 0) {

  2496                 // insert new filename

  2497                 mBasename.mPos = mDirectory.mPos + mDirectory.mLen;

  2498                 mSpec.Insert(newFilename, mBasename.mPos);

  2499                 shift = newFilename.Length();

  2500             }

  2501             else {

  2502                 // replace existing filename

  2503                 uint32_t oldLen = uint32_t(mBasename.mLen);

  2504                 if (mExtension.mLen >= 0)

  2505                     oldLen += (mExtension.mLen + 1);

  2506                 mSpec.Replace(mBasename.mPos, oldLen, newFilename);

  2507                 shift = newFilename.Length() - oldLen;

  2508             }

  2510             mBasename.mLen = basename.mLen;

  2511             mExtension.mLen = extension.mLen;

  2512             if (mExtension.mLen >= 0)

  2513                 mExtension.mPos = mBasename.mPos + mBasename.mLen + 1;

  2514         }

  2515     }

  2516     if (shift) {

  2517         ShiftFromQuery(shift);

  2518         mFilepath.mLen += shift;

  2519         mPath.mLen += shift;

  2520     }

  2521     return NS_OK;

  2522 }

  2524 NS_IMETHODIMP

  2525 nsStandardURL::SetFileBaseName(const nsACString &input)

  2526 {

  2527     nsAutoCString extension;

  2528     nsresult rv = GetFileExtension(extension);

  2529     NS_ENSURE_SUCCESS(rv, rv);

  2531     nsAutoCString newFileName(input);

  2533     if (!extension.IsEmpty()) {

  2534         newFileName.Append('.');

  2535         newFileName.Append(extension);

  2536     }

  2538     return SetFileName(newFileName);

  2539 }

  2541 NS_IMETHODIMP

  2542 nsStandardURL::SetFileExtension(const nsACString &input)

  2543 {

  2544     nsAutoCString newFileName;

  2545     nsresult rv = GetFileBaseName(newFileName);

  2546     NS_ENSURE_SUCCESS(rv, rv);

  2548     if (!input.IsEmpty()) {

  2549         newFileName.Append('.');

  2550         newFileName.Append(input);

  2551     }

  2553     return SetFileName(newFileName);

  2554 }

  2556 //----------------------------------------------------------------------------

  2557 // nsStandardURL::nsIFileURL

  2558 //----------------------------------------------------------------------------

  2560 nsresult

  2561 nsStandardURL::EnsureFile()

  2562 {

  2563     NS_PRECONDITION(mSupportsFileURL,

  2564                     "EnsureFile() called on a URL that doesn't support files!");

  2565     if (mFile) {

  2566         // Nothing to do

  2567         return NS_OK;

  2568     }

  2570     // Parse the spec if we don't have a cached result

  2571     if (mSpec.IsEmpty()) {

  2572         NS_WARNING("url not initialized");

  2573         return NS_ERROR_NOT_INITIALIZED;

  2574     }

  2576     if (!SegmentIs(mScheme, "file")) {

  2577         NS_WARNING("not a file URL");

  2578         return NS_ERROR_FAILURE;

  2579     }

  2581     return net_GetFileFromURLSpec(mSpec, getter_AddRefs(mFile));

  2582 }

  2584 NS_IMETHODIMP

  2585 nsStandardURL::GetFile(nsIFile **result)

  2586 {

  2587     NS_PRECONDITION(mSupportsFileURL,

  2588                     "GetFile() called on a URL that doesn't support files!");

  2589     nsresult rv = EnsureFile();

  2590     if (NS_FAILED(rv))

  2591         return rv;

  2593 #if defined(PR_LOGGING)

  2594     if (LOG_ENABLED()) {

  2595         nsAutoCString path;

  2596         mFile->GetNativePath(path);

  2597         LOG(("nsStandardURL::GetFile [this=%p spec=%s resulting_path=%s]\n",

  2598             this, mSpec.get(), path.get()));

  2599     }

  2600 #endif

  2602     // clone the file, so the caller can modify it.

  2603     // XXX nsIFileURL.idl specifies that the consumer must _not_ modify the

  2604     // nsIFile returned from this method; but it seems that some folks do

  2605     // (see bug 161921). until we can be sure that all the consumers are

  2606     // behaving themselves, we'll stay on the safe side and clone the file.

  2607     // see bug 212724 about fixing the consumers.

  2608     return mFile->Clone(result);

  2609 }

  2611 NS_IMETHODIMP

  2612 nsStandardURL::SetFile(nsIFile *file)

  2613 {

  2614     ENSURE_MUTABLE();

  2616     NS_ENSURE_ARG_POINTER(file);

  2618     nsresult rv;

  2619     nsAutoCString url;

  2621     rv = net_GetURLSpecFromFile(file, url);

  2622     if (NS_FAILED(rv)) return rv;

  2624     SetSpec(url);

  2626     rv = Init(mURLType, mDefaultPort, url, nullptr, nullptr);

  2628     // must clone |file| since its value is not guaranteed to remain constant

  2629     if (NS_SUCCEEDED(rv)) {

  2630         InvalidateCache();

  2631         if (NS_FAILED(file->Clone(getter_AddRefs(mFile)))) {

  2632             NS_WARNING("nsIFile::Clone failed");

  2633             // failure to clone is not fatal (GetFile will generate mFile)

  2634             mFile = 0;

  2635         }

  2636     }

  2637     return rv;

  2638 }

  2640 //----------------------------------------------------------------------------

  2641 // nsStandardURL::nsIStandardURL

  2642 //----------------------------------------------------------------------------

  2644 inline bool

  2645 IsUTFCharset(const char *aCharset)

  2646 {

  2647     return ((aCharset[0] == 'U' || aCharset[0] == 'u') &&

  2648             (aCharset[1] == 'T' || aCharset[1] == 't') &&

  2649             (aCharset[2] == 'F' || aCharset[2] == 'f'));

  2650 }

  2652 NS_IMETHODIMP

  2653 nsStandardURL::Init(uint32_t urlType,

  2654                     int32_t defaultPort,

  2655                     const nsACString &spec,

  2656                     const char *charset,

  2657                     nsIURI *baseURI)

  2658 {

  2659     ENSURE_MUTABLE();

  2661     InvalidateCache();

  2663     switch (urlType) {

  2664     case URLTYPE_STANDARD:

  2665         mParser = net_GetStdURLParser();

  2666         break;

  2667     case URLTYPE_AUTHORITY:

  2668         mParser = net_GetAuthURLParser();

  2669         break;

  2670     case URLTYPE_NO_AUTHORITY:

  2671         mParser = net_GetNoAuthURLParser();

  2672         break;

  2673     default:

  2674         NS_NOTREACHED("bad urlType");

  2675         return NS_ERROR_INVALID_ARG;

  2676     }

  2677     mDefaultPort = defaultPort;

  2678     mURLType = urlType;

  2680     mOriginCharset.Truncate();

  2682     if (charset == nullptr || *charset == '\0') {

  2683         // check if baseURI provides an origin charset and use that.

  2684         if (baseURI)

  2685             baseURI->GetOriginCharset(mOriginCharset);

  2687         // URI can't be encoded in UTF-16, UTF-16BE, UTF-16LE, UTF-32,

  2688         // UTF-32-LE, UTF-32LE, UTF-32BE (yet?). Truncate mOriginCharset if

  2689         // it starts with "utf" (since an empty mOriginCharset implies

  2690         // UTF-8, this is safe even if mOriginCharset is UTF-8).

  2692         if (mOriginCharset.Length() > 3 &&

  2693             IsUTFCharset(mOriginCharset.get())) {

  2694             mOriginCharset.Truncate();

  2695         }

  2696     }

  2697     else if (!IsUTFCharset(charset)) {

  2698         mOriginCharset = charset;

  2699     }

  2701     if (baseURI) {

  2702         uint32_t start, end;

  2703         // pull out the scheme and where it ends

  2704         nsresult rv = net_ExtractURLScheme(spec, &start, &end, nullptr);

  2705         if (NS_SUCCEEDED(rv) && spec.Length() > end+2) {

  2706             nsACString::const_iterator slash;

  2707             spec.BeginReading(slash);

  2708             slash.advance(end+1);

  2709             // then check if // follows

  2710             // if it follows, aSpec is really absolute ...

  2711             // ignore aBaseURI in this case

  2712             if (*slash == '/' && *(++slash) == '/')

  2713                 baseURI = nullptr;

  2714         }

  2715     }

  2717     if (!baseURI)

  2718         return SetSpec(spec);

  2720     nsAutoCString buf;

  2721     nsresult rv = baseURI->Resolve(spec, buf);

  2722     if (NS_FAILED(rv)) return rv;

  2724     return SetSpec(buf);

  2725 }

  2727 NS_IMETHODIMP

  2728 nsStandardURL::GetMutable(bool *value)

  2729 {

  2730     *value = mMutable;

  2731     return NS_OK;

  2732 }

  2734 NS_IMETHODIMP

  2735 nsStandardURL::SetMutable(bool value)

  2736 {

  2737     NS_ENSURE_ARG(mMutable || !value);

  2739     mMutable = value;

  2740     return NS_OK;

  2741 }

  2743 //----------------------------------------------------------------------------

  2744 // nsStandardURL::nsISerializable

  2745 //----------------------------------------------------------------------------

  2747 NS_IMETHODIMP

  2748 nsStandardURL::Read(nsIObjectInputStream *stream)

  2749 {

  2750     NS_PRECONDITION(!mHostA, "Shouldn't have cached ASCII host");

  2751     NS_PRECONDITION(mSpecEncoding == eEncoding_Unknown,

  2752                     "Shouldn't have spec encoding here");

  2754     nsresult rv;

  2756     uint32_t urlType;

  2757     rv = stream->Read32(&urlType);

  2758     if (NS_FAILED(rv)) return rv;

  2759     mURLType = urlType;

  2760     switch (mURLType) {

  2761       case URLTYPE_STANDARD:

  2762         mParser = net_GetStdURLParser();

  2763         break;

  2764       case URLTYPE_AUTHORITY:

  2765         mParser = net_GetAuthURLParser();

  2766         break;

  2767       case URLTYPE_NO_AUTHORITY:

  2768         mParser = net_GetNoAuthURLParser();

  2769         break;

  2770       default:

  2771         NS_NOTREACHED("bad urlType");

  2772         return NS_ERROR_FAILURE;

  2773     }

  2775     rv = stream->Read32((uint32_t *) &mPort);

  2776     if (NS_FAILED(rv)) return rv;

  2778     rv = stream->Read32((uint32_t *) &mDefaultPort);

  2779     if (NS_FAILED(rv)) return rv;

  2781     rv = NS_ReadOptionalCString(stream, mSpec);

  2782     if (NS_FAILED(rv)) return rv;

  2784     rv = ReadSegment(stream, mScheme);

  2785     if (NS_FAILED(rv)) return rv;

  2787     rv = ReadSegment(stream, mAuthority);

  2788     if (NS_FAILED(rv)) return rv;

  2790     rv = ReadSegment(stream, mUsername);

  2791     if (NS_FAILED(rv)) return rv;

  2793     rv = ReadSegment(stream, mPassword);

  2794     if (NS_FAILED(rv)) return rv;

  2796     rv = ReadSegment(stream, mHost);

  2797     if (NS_FAILED(rv)) return rv;

  2799     rv = ReadSegment(stream, mPath);

  2800     if (NS_FAILED(rv)) return rv;

  2802     rv = ReadSegment(stream, mFilepath);

  2803     if (NS_FAILED(rv)) return rv;

  2805     rv = ReadSegment(stream, mDirectory);

  2806     if (NS_FAILED(rv)) return rv;

  2808     rv = ReadSegment(stream, mBasename);

  2809     if (NS_FAILED(rv)) return rv;

  2811     rv = ReadSegment(stream, mExtension);

  2812     if (NS_FAILED(rv)) return rv;

  2814     // handle forward compatibility from older serializations that included mParam

  2815     URLSegment old_param;

  2816     rv = ReadSegment(stream, old_param);

  2817     if (NS_FAILED(rv)) return rv;

  2819     rv = ReadSegment(stream, mQuery);

  2820     if (NS_FAILED(rv)) return rv;

  2822     rv = ReadSegment(stream, mRef);

  2823     if (NS_FAILED(rv)) return rv;

  2825     rv = NS_ReadOptionalCString(stream, mOriginCharset);

  2826     if (NS_FAILED(rv)) return rv;

  2828     bool isMutable;

  2829     rv = stream->ReadBoolean(&isMutable);

  2830     if (NS_FAILED(rv)) return rv;

  2831     mMutable = isMutable;

  2833     bool supportsFileURL;

  2834     rv = stream->ReadBoolean(&supportsFileURL);

  2835     if (NS_FAILED(rv)) return rv;

  2836     mSupportsFileURL = supportsFileURL;

  2838     uint32_t hostEncoding;

  2839     rv = stream->Read32(&hostEncoding);

  2840     if (NS_FAILED(rv)) return rv;

  2841     if (hostEncoding != eEncoding_ASCII && hostEncoding != eEncoding_UTF8) {

  2842         NS_WARNING("Unexpected host encoding");

  2843         return NS_ERROR_UNEXPECTED;

  2844     }

  2845     mHostEncoding = hostEncoding;

  2847     // wait until object is set up, then modify path to include the param

  2848     if (old_param.mLen >= 0) {  // note that mLen=0 is ";"

  2849         // If this wasn't empty, it marks characters between the end of the

  2850         // file and start of the query - mPath should include the param,

  2851         // query and ref already.  Bump the mFilePath and

  2852         // directory/basename/extension components to include this.

  2853         mFilepath.Merge(mSpec,  ';', old_param);

  2854         mDirectory.Merge(mSpec, ';', old_param);

  2855         mBasename.Merge(mSpec,  ';', old_param);

  2856         mExtension.Merge(mSpec, ';', old_param);

  2857     }

  2859     return NS_OK;

  2860 }

  2862 NS_IMETHODIMP

  2863 nsStandardURL::Write(nsIObjectOutputStream *stream)

  2864 {

  2865     nsresult rv;

  2867     rv = stream->Write32(mURLType);

  2868     if (NS_FAILED(rv)) return rv;

  2870     rv = stream->Write32(uint32_t(mPort));

  2871     if (NS_FAILED(rv)) return rv;

  2873     rv = stream->Write32(uint32_t(mDefaultPort));

  2874     if (NS_FAILED(rv)) return rv;

  2876     rv = NS_WriteOptionalStringZ(stream, mSpec.get());

  2877     if (NS_FAILED(rv)) return rv;

  2879     rv = WriteSegment(stream, mScheme);

  2880     if (NS_FAILED(rv)) return rv;

  2882     rv = WriteSegment(stream, mAuthority);

  2883     if (NS_FAILED(rv)) return rv;

  2885     rv = WriteSegment(stream, mUsername);

  2886     if (NS_FAILED(rv)) return rv;

  2888     rv = WriteSegment(stream, mPassword);

  2889     if (NS_FAILED(rv)) return rv;

  2891     rv = WriteSegment(stream, mHost);

  2892     if (NS_FAILED(rv)) return rv;

  2894     rv = WriteSegment(stream, mPath);

  2895     if (NS_FAILED(rv)) return rv;

  2897     rv = WriteSegment(stream, mFilepath);

  2898     if (NS_FAILED(rv)) return rv;

  2900     rv = WriteSegment(stream, mDirectory);

  2901     if (NS_FAILED(rv)) return rv;

  2903     rv = WriteSegment(stream, mBasename);

  2904     if (NS_FAILED(rv)) return rv;

  2906     rv = WriteSegment(stream, mExtension);

  2907     if (NS_FAILED(rv)) return rv;

  2909     // for backwards compatibility since we removed mParam.  Note that this will mean that

  2910     // an older browser will read "" for mParam, and the param(s) will be part of mPath (as they

  2911     // after the removal of special handling).  It only matters if you downgrade a browser to before

  2912     // the patch.

  2913     URLSegment empty;

  2914     rv = WriteSegment(stream, empty);

  2915     if (NS_FAILED(rv)) return rv;

  2917     rv = WriteSegment(stream, mQuery);

  2918     if (NS_FAILED(rv)) return rv;

  2920     rv = WriteSegment(stream, mRef);

  2921     if (NS_FAILED(rv)) return rv;

  2923     rv = NS_WriteOptionalStringZ(stream, mOriginCharset.get());

  2924     if (NS_FAILED(rv)) return rv;

  2926     rv = stream->WriteBoolean(mMutable);

  2927     if (NS_FAILED(rv)) return rv;

  2929     rv = stream->WriteBoolean(mSupportsFileURL);

  2930     if (NS_FAILED(rv)) return rv;

  2932     rv = stream->Write32(mHostEncoding);

  2933     if (NS_FAILED(rv)) return rv;

  2935     // mSpecEncoding and mHostA are just caches that can be recovered as needed.

  2937     return NS_OK;

  2938 }

  2940 //---------------------------------------------------------------------------

  2941 // nsStandardURL::nsIIPCSerializableURI

  2942 //---------------------------------------------------------------------------

  2944 inline

  2945 mozilla::ipc::StandardURLSegment

  2946 ToIPCSegment(const nsStandardURL::URLSegment& aSegment)

  2947 {

  2948     return mozilla::ipc::StandardURLSegment(aSegment.mPos, aSegment.mLen);

  2949 }

  2951 inline

  2952 nsStandardURL::URLSegment

  2953 FromIPCSegment(const mozilla::ipc::StandardURLSegment& aSegment)

  2954 {

  2955     return nsStandardURL::URLSegment(aSegment.position(), aSegment.length());

  2956 }

  2958 void

  2959 nsStandardURL::Serialize(URIParams& aParams)

  2960 {

  2961     StandardURLParams params;

  2963     params.urlType() = mURLType;

  2964     params.port() = mPort;

  2965     params.defaultPort() = mDefaultPort;

  2966     params.spec() = mSpec;

  2967     params.scheme() = ToIPCSegment(mScheme);

  2968     params.authority() = ToIPCSegment(mAuthority);

  2969     params.username() = ToIPCSegment(mUsername);

  2970     params.password() = ToIPCSegment(mPassword);

  2971     params.host() = ToIPCSegment(mHost);

  2972     params.path() = ToIPCSegment(mPath);

  2973     params.filePath() = ToIPCSegment(mFilepath);

  2974     params.directory() = ToIPCSegment(mDirectory);

  2975     params.baseName() = ToIPCSegment(mBasename);

  2976     params.extension() = ToIPCSegment(mExtension);

  2977     params.query() = ToIPCSegment(mQuery);

  2978     params.ref() = ToIPCSegment(mRef);

  2979     params.originCharset() = mOriginCharset;

  2980     params.isMutable() = !!mMutable;

  2981     params.supportsFileURL() = !!mSupportsFileURL;

  2982     params.hostEncoding() = mHostEncoding;

  2983     // mSpecEncoding and mHostA are just caches that can be recovered as needed.

  2985     aParams = params;

  2986 }

  2988 bool

  2989 nsStandardURL::Deserialize(const URIParams& aParams)

  2990 {

  2991     NS_PRECONDITION(!mHostA, "Shouldn't have cached ASCII host");

  2992     NS_PRECONDITION(mSpecEncoding == eEncoding_Unknown,

  2993                     "Shouldn't have spec encoding here");

  2994     NS_PRECONDITION(!mFile, "Shouldn't have cached file");

  2996     if (aParams.type() != URIParams::TStandardURLParams) {

  2997         NS_ERROR("Received unknown parameters from the other process!");

  2998         return false;

  2999     }

  3001     const StandardURLParams& params = aParams.get_StandardURLParams();

  3003     mURLType = params.urlType();

  3004     switch (mURLType) {

  3005         case URLTYPE_STANDARD:

  3006             mParser = net_GetStdURLParser();

  3007             break;

  3008         case URLTYPE_AUTHORITY:

  3009             mParser = net_GetAuthURLParser();

  3010             break;

  3011         case URLTYPE_NO_AUTHORITY:

  3012             mParser = net_GetNoAuthURLParser();

  3013             break;

  3014         default:

  3015             NS_NOTREACHED("bad urlType");

  3016             return false;

  3017     }

  3019     if (params.hostEncoding() != eEncoding_ASCII &&

  3020         params.hostEncoding() != eEncoding_UTF8) {

  3021         NS_WARNING("Unexpected host encoding");

  3022         return false;

  3023     }

  3025     mPort = params.port();

  3026     mDefaultPort = params.defaultPort();

  3027     mSpec = params.spec();

  3028     mScheme = FromIPCSegment(params.scheme());

  3029     mAuthority = FromIPCSegment(params.authority());

  3030     mUsername = FromIPCSegment(params.username());

  3031     mPassword = FromIPCSegment(params.password());

  3032     mHost = FromIPCSegment(params.host());

  3033     mPath = FromIPCSegment(params.path());

  3034     mFilepath = FromIPCSegment(params.filePath());

  3035     mDirectory = FromIPCSegment(params.directory());

  3036     mBasename = FromIPCSegment(params.baseName());

  3037     mExtension = FromIPCSegment(params.extension());

  3038     mQuery = FromIPCSegment(params.query());

  3039     mRef = FromIPCSegment(params.ref());

  3040     mOriginCharset = params.originCharset();

  3041     mMutable = params.isMutable();

  3042     mSupportsFileURL = params.supportsFileURL();

  3043     mHostEncoding = params.hostEncoding();

  3045     // mSpecEncoding and mHostA are just caches that can be recovered as needed.

  3046     return true;

  3047 }

  3049 //----------------------------------------------------------------------------

  3050 // nsStandardURL::nsIClassInfo

  3051 //----------------------------------------------------------------------------

  3053 NS_IMETHODIMP

  3054 nsStandardURL::GetInterfaces(uint32_t *count, nsIID * **array)

  3055 {

  3056     *count = 0;

  3057     *array = nullptr;

  3058     return NS_OK;

  3059 }

  3061 NS_IMETHODIMP

  3062 nsStandardURL::GetHelperForLanguage(uint32_t language, nsISupports **_retval)

  3063 {

  3064     *_retval = nullptr;

  3065     return NS_OK;

  3066 }

  3068 NS_IMETHODIMP

  3069 nsStandardURL::GetContractID(char * *aContractID)

  3070 {

  3071     *aContractID = nullptr;

  3072     return NS_OK;

  3073 }

  3075 NS_IMETHODIMP

  3076 nsStandardURL::GetClassDescription(char * *aClassDescription)

  3077 {

  3078     *aClassDescription = nullptr;

  3079     return NS_OK;

  3080 }

  3082 NS_IMETHODIMP

  3083 nsStandardURL::GetClassID(nsCID * *aClassID)

  3084 {

  3085     *aClassID = (nsCID*) nsMemory::Alloc(sizeof(nsCID));

  3086     if (!*aClassID)

  3087         return NS_ERROR_OUT_OF_MEMORY;

  3088     return GetClassIDNoAlloc(*aClassID);

  3089 }

  3091 NS_IMETHODIMP

  3092 nsStandardURL::GetImplementationLanguage(uint32_t *aImplementationLanguage)

  3093 {

  3094     *aImplementationLanguage = nsIProgrammingLanguage::CPLUSPLUS;

  3095     return NS_OK;

  3096 }

  3098 NS_IMETHODIMP

  3099 nsStandardURL::GetFlags(uint32_t *aFlags)

  3100 {

  3101     *aFlags = nsIClassInfo::MAIN_THREAD_ONLY;

  3102     return NS_OK;

  3103 }

  3105 NS_IMETHODIMP

  3106 nsStandardURL::GetClassIDNoAlloc(nsCID *aClassIDNoAlloc)

  3107 {

  3108     *aClassIDNoAlloc = kStandardURLCID;

  3109     return NS_OK;

  3110 }

  3112 //----------------------------------------------------------------------------

  3113 // nsStandardURL::nsISizeOf

  3114 //----------------------------------------------------------------------------

  3116 size_t

  3117 nsStandardURL::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const

  3118 {

  3119   return mSpec.SizeOfExcludingThisIfUnshared(aMallocSizeOf) +

  3120          mOriginCharset.SizeOfExcludingThisIfUnshared(aMallocSizeOf) +

  3121          aMallocSizeOf(mHostA);

  3123   // Measurement of the following members may be added later if DMD finds it is

  3124   // worthwhile:

  3125   // - mParser

  3126   // - mFile

  3127 }

  3129 size_t

  3130 nsStandardURL::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const {

  3131   return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);

  3132 }

The Tor Browser / file revision

netwerk/base/src/nsStandardURL.cpp@6474c204b198

netwerk/base/src/nsStandardURL.cpp