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
|
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: indexrecords.cc,v 1.1.2.4 2003/12/30 02:11:43 mdz Exp $
/*}}}*/
// Include Files /*{{{*/
#include <apt-pkg/indexrecords.h>
#include <apt-pkg/tagfile.h>
#include <apt-pkg/error.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
#include <apti18n.h>
#include <sys/stat.h>
#include <clocale>
/*}}}*/
string indexRecords::GetDist() const
{
return this->Dist;
}
bool indexRecords::CheckDist(const string MaybeDist) const
{
return (this->Dist == MaybeDist
|| this->Suite == MaybeDist);
}
string indexRecords::GetExpectedDist() const
{
return this->ExpectedDist;
}
time_t indexRecords::GetValidUntil() const
{
return this->ValidUntil;
}
const indexRecords::checkSum *indexRecords::Lookup(const string MetaKey)
{
return Entries[MetaKey];
}
bool indexRecords::Exists(string const &MetaKey) const
{
return Entries.count(MetaKey) == 1;
}
bool indexRecords::Load(const string Filename) /*{{{*/
{
FileFd Fd(Filename, FileFd::ReadOnly);
pkgTagFile TagFile(&Fd, Fd.Size() + 256); // XXX
if (_error->PendingError() == true)
{
strprintf(ErrorText, _("Unable to parse Release file %s"),Filename.c_str());
return false;
}
pkgTagSection Section;
const char *Start, *End;
// Skip over sections beginning with ----- as this is an idicator for clearsigns
do {
if (TagFile.Step(Section) == false)
{
strprintf(ErrorText, _("No sections in Release file %s"), Filename.c_str());
return false;
}
Section.Get (Start, End, 0);
} while (End - Start > 5 && strncmp(Start, "-----", 5) == 0);
Suite = Section.FindS("Suite");
Dist = Section.FindS("Codename");
int i;
for (i=0;HashString::SupportedHashes()[i] != NULL; i++)
{
if (!Section.Find(HashString::SupportedHashes()[i], Start, End))
continue;
string Name;
string Hash;
size_t Size;
while (Start < End)
{
if (!parseSumData(Start, End, Name, Hash, Size))
return false;
indexRecords::checkSum *Sum = new indexRecords::checkSum;
Sum->MetaKeyFilename = Name;
Sum->Hash = HashString(HashString::SupportedHashes()[i],Hash);
Sum->Size = Size;
Entries[Name] = Sum;
}
break;
}
if(HashString::SupportedHashes()[i] == NULL)
{
strprintf(ErrorText, _("No Hash entry in Release file %s"), Filename.c_str());
return false;
}
string Label = Section.FindS("Label");
string StrDate = Section.FindS("Date");
string StrValidUntil = Section.FindS("Valid-Until");
// if we have a Valid-Until header in the Release file, use it as default
if (StrValidUntil.empty() == false)
{
if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false)
{
strprintf(ErrorText, _("Invalid 'Valid-Until' entry in Release file %s"), Filename.c_str());
return false;
}
}
// get the user settings for this archive and use what expires earlier
int MaxAge = _config->FindI("Acquire::Max-ValidTime", 0);
if (Label.empty() == false)
MaxAge = _config->FindI(string("Acquire::Max-ValidTime::" + Label).c_str(), MaxAge);
if(MaxAge == 0) // No user settings, use the one from the Release file
return true;
time_t date;
if (RFC1123StrToTime(StrDate.c_str(), date) == false)
{
strprintf(ErrorText, _("Invalid 'Date' entry in Release file %s"), Filename.c_str());
return false;
}
date += MaxAge;
if (ValidUntil == 0 || ValidUntil > date)
ValidUntil = date;
return true;
}
/*}}}*/
vector<string> indexRecords::MetaKeys() /*{{{*/
{
std::vector<std::string> keys;
std::map<string,checkSum *>::iterator I = Entries.begin();
while(I != Entries.end()) {
keys.push_back((*I).first);
++I;
}
return keys;
}
/*}}}*/
bool indexRecords::parseSumData(const char *&Start, const char *End, /*{{{*/
string &Name, string &Hash, size_t &Size)
{
Name = "";
Hash = "";
Size = 0;
/* Skip over the first blank */
while ((*Start == '\t' || *Start == ' ' || *Start == '\n')
&& Start < End)
Start++;
if (Start >= End)
return false;
/* Move EntryEnd to the end of the first entry (the hash) */
const char *EntryEnd = Start;
while ((*EntryEnd != '\t' && *EntryEnd != ' ')
&& EntryEnd < End)
EntryEnd++;
if (EntryEnd == End)
return false;
Hash.append(Start, EntryEnd-Start);
/* Skip over intermediate blanks */
Start = EntryEnd;
while (*Start == '\t' || *Start == ' ')
Start++;
if (Start >= End)
return false;
EntryEnd = Start;
/* Find the end of the second entry (the size) */
while ((*EntryEnd != '\t' && *EntryEnd != ' ' )
&& EntryEnd < End)
EntryEnd++;
if (EntryEnd == End)
return false;
Size = strtol (Start, NULL, 10);
/* Skip over intermediate blanks */
Start = EntryEnd;
while (*Start == '\t' || *Start == ' ')
Start++;
if (Start >= End)
return false;
EntryEnd = Start;
/* Find the end of the third entry (the filename) */
while ((*EntryEnd != '\t' && *EntryEnd != ' ' && *EntryEnd != '\n')
&& EntryEnd < End)
EntryEnd++;
Name.append(Start, EntryEnd-Start);
Start = EntryEnd; //prepare for the next round
return true;
}
/*}}}*/
indexRecords::indexRecords()
{
}
indexRecords::indexRecords(const string ExpectedDist) :
ExpectedDist(ExpectedDist), ValidUntil(0)
{
}
|
