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#include "parse.h"
#include "common.h"
#include "encode.h"
namespace NUri {
const TParseFlags TParser::FieldFlags[] =
{
TParseFlags(0 // FieldScheme
| TFeature::FeatureToLower,
0)
,
TParseFlags(0 // FieldUsername
| TFeature::FeatureDecodeANY | TFeature::FeaturesDecode | TFeature::FeatureEncodePercent,
0 | TFeature::FeatureToLower)
,
TParseFlags(0 // FieldPassword
| TFeature::FeatureDecodeANY | TFeature::FeaturesDecode | TFeature::FeatureEncodePercent,
0 | TFeature::FeatureToLower)
,
TParseFlags(0 // FieldHost
| TFeature::FeatureToLower | TFeature::FeatureUpperEncoded | (TFeature::FeaturesMaybeEncode & ~TFeature::FeatureEncodeExtendedDelim),
0 | TFeature::FeaturesMaybeDecode)
,
TParseFlags(0 // FieldPort
,
0)
,
TParseFlags(0 // FieldPath
| TFeature::FeaturesEncodePChar | TFeature::FeaturePathOperation,
0 | TFeature::FeatureToLower | TFeature::FeatureEncodeSpaceAsPlus)
,
TParseFlags(0 // FieldQuery
| TFeature::FeaturesEncodePChar | TFeature::FeatureEncodeSpaceAsPlus,
0 | TFeature::FeatureToLower)
,
TParseFlags(0 // FieldFragment
| TFeature::FeaturesEncodePChar,
0 | TFeature::FeatureToLower | TFeature::FeatureEncodeSpaceAsPlus)};
namespace NParse {
void TRange::AddRange(const TRange& range, ui64 mask) {
FlagsAllPlaintext |= range.FlagsAllPlaintext;
// update only if flags apply here
mask &= range.FlagsEncodeMasked;
if (0 == mask)
return;
FlagsEncodeMasked |= mask;
if (mask & TFeature::FeaturesMaybeEncode)
Encode += range.Encode;
if (mask & TFeature::FeaturesDecode)
Decode += range.Decode;
}
}
void TParser::copyRequirementsImpl(const char* ptr) {
Y_ASSERT(0 != CurRange.FlagsAllPlaintext);
Y_UNUSED(ptr);
#ifdef DO_PRN
PrintHead(ptr, __FUNCTION__)
<< " all=[" << IntToString<16>(CurRange.FlagsAllPlaintext)
<< "] enc=[" << IntToString<16>(CurRange.FlagsEncodeMasked)
<< " & " << IntToString<16>(Flags.Allow | Flags.Extra) << "]";
PrintTail(CurRange.Beg, ptr);
#endif
for (int i = 0; i < TField::FieldUrlMAX; ++i) {
const TField::EField fld = TField::EField(i);
TSection& section = Sections[fld];
// update only sections in progress
if (nullptr == section.Beg)
continue;
// and overlapping with the range
if (nullptr != section.End && section.End < CurRange.Beg)
continue;
#ifdef DO_PRN
PrintHead(ptr, __FUNCTION__, fld)
<< " all=[" << IntToString<16>(CurRange.FlagsAllPlaintext)
<< "] enc=[" << IntToString<16>(CurRange.FlagsEncodeMasked)
<< " & " << IntToString<16>(GetFieldFlags(fld)) << "]";
PrintTail(section.Beg, ptr);
#endif
section.AddRange(CurRange, GetFieldFlags(fld));
}
CurRange.Reset();
}
void TParser::PctEndImpl(const char* ptr) {
#ifdef DO_PRN
PrintHead(PctBegin, __FUNCTION__);
PrintTail(PctBegin, ptr);
#else
Y_UNUSED(ptr);
#endif
setRequirement(PctBegin, TEncoder::GetFlags('%').FeatFlags);
PctBegin = nullptr;
}
void TParser::HexSet(const char* ptr) {
Y_ASSERT(nullptr != PctBegin);
#ifdef DO_PRN
PrintHead(ptr, __FUNCTION__);
PrintTail(PctBegin, ptr + 1);
#endif
PctBegin = nullptr;
const unsigned char ch = HexValue;
ui64 flags = TEncoder::GetFlags('%').FeatFlags | TEncoder::GetFlags(ch).FeatFlags;
setRequirementExcept(ptr, flags, TFeature::FeaturesMaybeEncode);
}
TState::EParsed TParser::ParseImpl() {
#ifdef DO_PRN
PrintHead(UriStr.data(), "[Parsing]") << "URL";
PrintTail(UriStr);
#endif
const bool ok = doParse(UriStr.data(), UriStr.length());
#ifdef DO_PRN
Cdbg << (ok ? "[Parsed]" : "[Failed]");
for (int idx = 0; idx < TField::FieldUrlMAX; ++idx) {
const TSection& section = Sections[idx];
if (section.IsSet())
Cdbg << ' ' << TField::EField(idx) << "=[" << section.Get() << ']';
}
Cdbg << Endl;
#endif
if (!ok) {
if (!(Flags & TFeature::FeatureTryToFix) || !Sections[TField::FieldFrag].Beg)
return TState::ParsedBadFormat;
//Here: error was in fragment, just ignore it
ResetSection(TField::FieldFrag);
}
if ((Flags & TFeature::FeatureDenyNetworkPath) && IsNetPath())
return TState::ParsedBadFormat;
const TSection& scheme = Sections[TField::FieldScheme];
Scheme = scheme.IsSet() ? TSchemeInfo::GetKind(scheme.Get()) : TScheme::SchemeEmpty;
const TSchemeInfo& schemeInfo = TSchemeInfo::Get(Scheme);
if (IsRootless()) {
// opaque case happens
if (schemeInfo.FldReq & TField::FlagHost)
return TState::ParsedBadFormat;
if (TScheme::SchemeEmpty == Scheme)
return TState::ParsedBadScheme;
if (Flags & TFeature::FeatureAllowRootless)
return TState::ParsedOK;
if (!(Flags & TFeature::FeatureSchemeFlexible))
return TState::ParsedBadScheme;
return TState::ParsedRootless;
}
checkSectionCollision(TField::FieldUser, TField::FieldHost);
checkSectionCollision(TField::FieldPass, TField::FieldPort);
if (0 == (Flags & TFeature::FeatureAuthSupported))
if (Sections[TField::FieldUser].IsSet() || Sections[TField::FieldPass].IsSet())
return TState::ParsedBadAuth;
TSection& host = Sections[TField::FieldHost];
if (host.IsSet())
for (; host.End != host.Beg && '.' == host.End[-1];)
--host.End;
if (scheme.IsSet()) {
ui64 wantCareFlags = 0;
switch (Scheme) {
case TScheme::SchemeHTTP:
break;
case TScheme::SchemeEmpty:
Scheme = TScheme::SchemeUnknown;
[[fallthrough]];
case TScheme::SchemeUnknown:
wantCareFlags =
TFeature::FeatureSchemeFlexible | TFeature::FeatureNoRelPath;
break;
default:
wantCareFlags =
TFeature::FeatureSchemeFlexible | TFeature::FeatureSchemeKnown;
break;
}
if (0 != wantCareFlags && 0 == (Flags & wantCareFlags))
return TState::ParsedBadScheme;
if ((schemeInfo.FldReq & TField::FlagHost) || (Flags & TFeature::FeatureRemoteOnly))
if (!host.IsSet() || 0 == host.Len())
return TState::ParsedBadFormat;
}
return TState::ParsedOK;
}
}
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