Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Net / System / _UriSyntax.cs / 2 / _UriSyntax.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
//
// This file utilizes partial class feature and contains
// only internal implementation of UriParser type
//
namespace System {
using System.Globalization;
using System.Collections;
using System.Security.Permissions;
// This enum specifies the Uri syntax flags that is understood by builtin Uri parser.
[Flags]
internal enum UriSyntaxFlags {
MustHaveAuthority = 0x1, // must have "//" after scheme:
OptionalAuthority = 0x2, // used by generic parser due to unknown Uri syntax
MayHaveUserInfo = 0x4,
MayHavePort = 0x8,
MayHavePath = 0x10,
MayHaveQuery = 0x20,
MayHaveFragment = 0x40,
AllowEmptyHost = 0x80,
AllowUncHost = 0x100,
AllowDnsHost = 0x200,
AllowIPv4Host = 0x400,
AllowIPv6Host = 0x800,
AllowAnInternetHost = AllowDnsHost|AllowIPv4Host|AllowIPv6Host,
AllowAnyOtherHost = 0x1000, // Relaxed authority syntax
FileLikeUri = 0x2000, //Special case to allow file:\\balbla or file://\\balbla
MailToLikeUri = 0x4000, //V1 parser inheritance mailTo:AuthorityButNoSlashes
V1_UnknownUri = 0x10000, // a Compatibility with V1 parser for an unknown scheme
SimpleUserSyntax = 0x20000, // It is safe to not call virtual UriParser methods
BuiltInSyntax = 0x40000, // This is a simple Uri plus it is hardcoded in the product
ParserSchemeOnly = 0x80000, // This is a Parser that does only Uri scheme parsing
AllowDOSPath = 0x100000, // will check for "x:\"
PathIsRooted = 0x200000, // For an authority based Uri the first path char is '/'
ConvertPathSlashes = 0x400000, // will turn '\' into '/'
CompressPath = 0x800000, // For an authority based Uri remove/compress /./ /../ in the path
CanonicalizeAsFilePath = 0x1000000, // remove/convert sequences /.../ /x../ /x./ dangerous for a DOS path
UnEscapeDotsAndSlashes = 0x2000000, // additionally unescape dots and slashes before doing path compression
AllowIdn = 0x4000000, // IDN host conversion allowed
AllowIriParsing = 0x10000000, // Iri parsing. String is normalized, bidi control
// characters are removed, unicode char limits are checked etc.
// KeepTailLWS = 0x8000000,
}
//
// Only internal members are included here
//
public abstract partial class UriParser {
private static readonly System.Collections.Hashtable m_Table;
private static System.Collections.Hashtable m_TempTable;
private UriSyntaxFlags m_Flags;
private int m_Port;
private string m_Scheme;
internal const int NoDefaultPort = -1;
private const int c_InitialTableSize = 25;
// These are always available without paying hashtable lookup cost
// Note: see UpdateStaticSyntaxReference()
internal static UriParser HttpUri;
internal static UriParser HttpsUri;
internal static UriParser FtpUri;
internal static UriParser FileUri;
internal static UriParser GopherUri;
internal static UriParser NntpUri;
internal static UriParser NewsUri;
internal static UriParser MailToUri;
internal static UriParser UuidUri;
internal static UriParser TelnetUri;
internal static UriParser LdapUri;
internal static UriParser NetTcpUri;
internal static UriParser NetPipeUri;
internal static UriParser VsMacrosUri; //bad guy
static UriParser() {
m_Table = new System.Collections.Hashtable(c_InitialTableSize);
m_TempTable = new System.Collections.Hashtable(c_InitialTableSize);
//Now we will call for the instance constructors that will interrupt this static one.
// Below we simulate calls into FetchSyntax() but avoid using lock() and other things redundant for a .cctor
HttpUri = new BuiltInUriParser("http", 80, HttpSyntaxFlags);
m_Table[HttpUri.SchemeName] = HttpUri; //HTTP
HttpsUri = new BuiltInUriParser("https", 443, HttpUri.m_Flags);
m_Table[HttpsUri.SchemeName] = HttpsUri; //HTTPS cloned from HTTP
FtpUri = new BuiltInUriParser("ftp", 21, FtpSyntaxFlags);
m_Table[FtpUri.SchemeName] = FtpUri; //FTP
FileUri = new BuiltInUriParser("file", NoDefaultPort, FileSyntaxFlags);
m_Table[FileUri.SchemeName] = FileUri; //FILE
GopherUri = new BuiltInUriParser("gopher", 70, GopherSyntaxFlags);
m_Table[GopherUri.SchemeName] = GopherUri; //GOPHER
NntpUri = new BuiltInUriParser("nntp", 119, NntpSyntaxFlags);
m_Table[NntpUri.SchemeName] = NntpUri; //NNTP
NewsUri = new BuiltInUriParser("news", NoDefaultPort, NewsSyntaxFlags);
m_Table[NewsUri.SchemeName] = NewsUri; //NEWS
MailToUri = new BuiltInUriParser("mailto", 25, MailtoSyntaxFlags);
m_Table[MailToUri.SchemeName] = MailToUri; //MAILTO
UuidUri = new BuiltInUriParser("uuid", NoDefaultPort, NewsUri.m_Flags);
m_Table[UuidUri.SchemeName] = UuidUri; //UUID cloned from NEWS
TelnetUri = new BuiltInUriParser("telnet", 23, TelnetSyntaxFlags);
m_Table[TelnetUri.SchemeName] = TelnetUri; //TELNET
LdapUri = new BuiltInUriParser("ldap", 389, LdapSyntaxFlags);
m_Table[LdapUri.SchemeName] = LdapUri; //LDAP
NetTcpUri = new BuiltInUriParser("net.tcp", 808, NetTcpSyntaxFlags);
m_Table[NetTcpUri.SchemeName] = NetTcpUri;
NetPipeUri = new BuiltInUriParser("net.pipe", NoDefaultPort, NetPipeSyntaxFlags);
m_Table[NetPipeUri.SchemeName] = NetPipeUri;
VsMacrosUri = new BuiltInUriParser("vsmacros", NoDefaultPort, VsmacrosSyntaxFlags);
m_Table[VsMacrosUri.SchemeName] = VsMacrosUri; //VSMACROS
}
//
private class BuiltInUriParser: UriParser
{
//
// All BuiltIn parsers use that ctor. They are marked with "simple" and "built-in" flags
//
internal BuiltInUriParser(string lwrCaseScheme, int defaultPort, UriSyntaxFlags syntaxFlags)
: base ((syntaxFlags | UriSyntaxFlags.SimpleUserSyntax | UriSyntaxFlags.BuiltInSyntax))
{
m_Scheme = lwrCaseScheme;
m_Port = defaultPort;
}
}
//
internal UriSyntaxFlags Flags {
get {
return m_Flags;
}
}
//
internal bool NotAny(UriSyntaxFlags flags)
{
return (m_Flags & flags) == 0;
}
//
internal bool InFact(UriSyntaxFlags flags)
{
return (m_Flags & flags) != 0;
}
//
internal bool IsAllSet(UriSyntaxFlags flags)
{
return (m_Flags & flags) == flags;
}
//
// Internal .ctor, any ctor eventually goes through this one
//
internal UriParser(UriSyntaxFlags flags)
{
m_Flags = flags;
m_Scheme = string.Empty;
}
//
private static void FetchSyntax(UriParser syntax, string lwrCaseSchemeName, int defaultPort)
{
if (syntax.SchemeName.Length != 0)
throw new InvalidOperationException(SR.GetString(SR.net_uri_NeedFreshParser, syntax.SchemeName));
lock (m_Table)
{
syntax.m_Flags &= ~UriSyntaxFlags.V1_UnknownUri;
UriParser oldSyntax = (UriParser)m_Table[lwrCaseSchemeName];
if (oldSyntax != null)
throw new InvalidOperationException(SR.GetString(SR.net_uri_AlreadyRegistered, oldSyntax.SchemeName));
oldSyntax = (UriParser)m_TempTable[syntax.SchemeName];
if (oldSyntax != null)
{
// optimization on schemeName, will try to keep the first reference
lwrCaseSchemeName = oldSyntax.m_Scheme;
m_TempTable.Remove(lwrCaseSchemeName);
}
syntax.OnRegister(lwrCaseSchemeName, defaultPort);
syntax.m_Scheme = lwrCaseSchemeName;
syntax.CheckSetIsSimpleFlag();
syntax.m_Port = defaultPort;
m_Table[syntax.SchemeName] = syntax;
}
}
//
private const int c_MaxCapacity = 512;
//schemeStr must be in lower case!
internal static UriParser FindOrFetchAsUnknownV1Syntax(string lwrCaseScheme) {
// check may be other thread just added one
UriParser syntax = (UriParser)m_Table[lwrCaseScheme];
if (syntax != null) {
return syntax;
}
syntax = (UriParser)m_TempTable[lwrCaseScheme];
if (syntax != null) {
return syntax;
}
lock (m_Table) {
// This is a bit paranoid but let's prevent static table growing infinitly
if (m_TempTable.Count >= c_MaxCapacity) {
m_TempTable = new System.Collections.Hashtable(c_InitialTableSize);
}
syntax = new BuiltInUriParser(lwrCaseScheme, NoDefaultPort, UnknownV1SyntaxFlags);
m_TempTable[lwrCaseScheme] = syntax;
return syntax;
}
}
//
internal static UriParser GetSyntax(string lwrCaseScheme) {
object ret = m_Table[lwrCaseScheme];
if (ret == null) {
ret = m_TempTable[lwrCaseScheme];
}
return (UriParser)ret;
}
//
// Builtin and User Simple syntaxes do not need custom validation/parsing (i.e. virtual method calls),
//
internal bool IsSimple
{
get {
return InFact(UriSyntaxFlags.SimpleUserSyntax);
}
}
//
internal void CheckSetIsSimpleFlag()
{
Type type = this.GetType();
if (type == typeof(GenericUriParser) ||
type == typeof(HttpStyleUriParser) ||
type == typeof(FtpStyleUriParser) ||
type == typeof(FileStyleUriParser) ||
type == typeof(NewsStyleUriParser) ||
type == typeof(GopherStyleUriParser) ||
type == typeof(NetPipeStyleUriParser) ||
type == typeof(NetTcpStyleUriParser) ||
type == typeof(LdapStyleUriParser))
{
m_Flags |= UriSyntaxFlags.SimpleUserSyntax;
}
}
//
// Copied from Uri class
//
private static bool CheckSchemeName(string schemeName)
{
if (((object)schemeName == null) || (schemeName.Length == 0) || !IsAsciiLetter(schemeName[0]))
{
return false;
}
for (int i = schemeName.Length - 1; i > 0; --i)
{
if (!(IsAsciiLetterOrDigit(schemeName[i]) || (schemeName[i] == '+') || (schemeName[i] == '-') || (schemeName[i] == '.')))
{
return false;
}
}
return true;
}
private static bool IsAsciiLetter(char character)
{
return (character >= 'a' && character <= 'z') || (character >= 'A' && character <= 'Z');
}
private static bool IsAsciiLetterOrDigit(char character)
{
return IsAsciiLetter(character) || (character >= '0' && character <= '9');
}
//
// These are simple internal wrappers that will call virtual protected methods
// (to avoid "protected internal" siganures in the public docs)
//
internal UriParser InternalOnNewUri()
{
UriParser effectiveParser = OnNewUri();
if ((object)this != (object)effectiveParser)
{
effectiveParser.m_Scheme = m_Scheme;
effectiveParser.m_Port = m_Port;
effectiveParser.m_Flags = m_Flags;
}
return effectiveParser;
}
//
internal void InternalValidate(Uri thisUri, out UriFormatException parsingError)
{
InitializeAndValidate(thisUri, out parsingError);
}
//
internal string InternalResolve(Uri thisBaseUri, Uri uriLink, out UriFormatException parsingError)
{
return Resolve(thisBaseUri, uriLink, out parsingError);
}
//
internal bool InternalIsBaseOf(Uri thisBaseUri, Uri uriLink)
{
return IsBaseOf(thisBaseUri, uriLink);
}
//
internal string InternalGetComponents(Uri thisUri, UriComponents uriComponents, UriFormat uriFormat)
{
return GetComponents(thisUri, uriComponents, uriFormat);
}
//
internal bool InternalIsWellFormedOriginalString(Uri thisUri)
{
return IsWellFormedOriginalString(thisUri);
}
//
// Various Uri scheme syntax flags
//
private const UriSyntaxFlags UnknownV1SyntaxFlags =
UriSyntaxFlags.V1_UnknownUri | // This flag must be always set here
UriSyntaxFlags.OptionalAuthority |
//
UriSyntaxFlags.MayHaveUserInfo |
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveQuery |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.AllowEmptyHost |
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
// UriSyntaxFlags.AllowAnyOtherHost | // V1.1 has a bug and so does not support this case
//
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.AllowDOSPath | //
UriSyntaxFlags.ConvertPathSlashes | // V1 compat, it will always convert backslashes
UriSyntaxFlags.CompressPath | // V1 compat, it will always compress path even for non hierarchical Uris
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags HttpSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.MayHaveUserInfo |
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveQuery |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.PathIsRooted |
//
UriSyntaxFlags.ConvertPathSlashes |
UriSyntaxFlags.CompressPath |
UriSyntaxFlags.CanonicalizeAsFilePath |
UriSyntaxFlags.UnEscapeDotsAndSlashes |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags FtpSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.MayHaveUserInfo |
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.PathIsRooted |
//
UriSyntaxFlags.ConvertPathSlashes |
UriSyntaxFlags.CompressPath |
UriSyntaxFlags.CanonicalizeAsFilePath|
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags FileSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.AllowEmptyHost |
UriSyntaxFlags.AllowUncHost |
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.FileLikeUri |
//
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.AllowDOSPath |
//
UriSyntaxFlags.ConvertPathSlashes |
UriSyntaxFlags.CompressPath |
UriSyntaxFlags.CanonicalizeAsFilePath |
UriSyntaxFlags.UnEscapeDotsAndSlashes |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
// bad guy
private const UriSyntaxFlags VsmacrosSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.AllowEmptyHost |
UriSyntaxFlags.AllowUncHost |
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.FileLikeUri |
//
UriSyntaxFlags.AllowDOSPath |
UriSyntaxFlags.ConvertPathSlashes |
UriSyntaxFlags.CompressPath |
UriSyntaxFlags.CanonicalizeAsFilePath |
UriSyntaxFlags.UnEscapeDotsAndSlashes |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags GopherSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.MayHaveUserInfo |
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
// UriSyntaxFlags.KeepTailLWS |
//Note that NNTP and NEWS are quite different in syntax
private const UriSyntaxFlags NewsSyntaxFlags =
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags NntpSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.MayHaveUserInfo|
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags TelnetSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.MayHaveUserInfo|
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags LdapSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
//
UriSyntaxFlags.AllowEmptyHost |
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.MayHaveUserInfo |
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveQuery |
UriSyntaxFlags.MayHaveFragment |
//
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags MailtoSyntaxFlags =
//
UriSyntaxFlags.AllowEmptyHost |
UriSyntaxFlags.AllowUncHost | //
UriSyntaxFlags.AllowAnInternetHost |
//
UriSyntaxFlags.MayHaveUserInfo |
UriSyntaxFlags.MayHavePort |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveFragment |
UriSyntaxFlags.MayHaveQuery | //to maintain everett compat
//
UriSyntaxFlags.MailToLikeUri |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags NetPipeSyntaxFlags =
UriSyntaxFlags.MustHaveAuthority |
UriSyntaxFlags.MayHavePath |
UriSyntaxFlags.MayHaveQuery |
UriSyntaxFlags.MayHaveFragment |
UriSyntaxFlags.AllowAnInternetHost |
UriSyntaxFlags.PathIsRooted |
UriSyntaxFlags.ConvertPathSlashes |
UriSyntaxFlags.CompressPath |
UriSyntaxFlags.CanonicalizeAsFilePath |
UriSyntaxFlags.UnEscapeDotsAndSlashes |
UriSyntaxFlags.AllowIdn |
UriSyntaxFlags.AllowIriParsing;
private const UriSyntaxFlags NetTcpSyntaxFlags = NetPipeSyntaxFlags | UriSyntaxFlags.MayHavePort;
}
}
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