1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
#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)
,
TParseFlags(0 // FieldHashBang
| 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;
}
}
|
