| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: indexrecords.cc,v 1.1.2.4 2003/12/30 02:11:43 mdz Exp $ |
| 4 | /*}}}*/ |
| 5 | // Include Files /*{{{*/ |
| 6 | #include<config.h> |
| 7 | |
| 8 | #include <apt-pkg/indexrecords.h> |
| 9 | #include <apt-pkg/tagfile.h> |
| 10 | #include <apt-pkg/error.h> |
| 11 | #include <apt-pkg/strutl.h> |
| 12 | #include <apt-pkg/configuration.h> |
| 13 | #include <apt-pkg/fileutl.h> |
| 14 | #include <apt-pkg/hashes.h> |
| 15 | #include <apt-pkg/gpgv.h> |
| 16 | |
| 17 | #include <stdlib.h> |
| 18 | #include <time.h> |
| 19 | #include <clocale> |
| 20 | #include <map> |
| 21 | #include <string> |
| 22 | #include <utility> |
| 23 | #include <vector> |
| 24 | |
| 25 | #include <apti18n.h> |
| 26 | /*}}}*/ |
| 27 | |
| 28 | using std::string; |
| 29 | |
| 30 | APT_PURE string indexRecords::GetDist() const |
| 31 | { |
| 32 | return this->Dist; |
| 33 | } |
| 34 | |
| 35 | APT_PURE string indexRecords::GetSuite() const |
| 36 | { |
| 37 | return this->Suite; |
| 38 | } |
| 39 | |
| 40 | APT_PURE bool indexRecords::CheckDist(const string MaybeDist) const |
| 41 | { |
| 42 | return (this->Dist == MaybeDist |
| 43 | || this->Suite == MaybeDist); |
| 44 | } |
| 45 | |
| 46 | APT_PURE string indexRecords::GetExpectedDist() const |
| 47 | { |
| 48 | return this->ExpectedDist; |
| 49 | } |
| 50 | |
| 51 | APT_PURE time_t indexRecords::GetValidUntil() const |
| 52 | { |
| 53 | return this->ValidUntil; |
| 54 | } |
| 55 | |
| 56 | APT_PURE const indexRecords::checkSum *indexRecords::Lookup(const string MetaKey) |
| 57 | { |
| 58 | std::map<std::string, indexRecords::checkSum* >::const_iterator sum = Entries.find(MetaKey); |
| 59 | if (sum == Entries.end()) |
| 60 | return NULL; |
| 61 | return sum->second; |
| 62 | } |
| 63 | |
| 64 | APT_PURE bool indexRecords::Exists(string const &MetaKey) const |
| 65 | { |
| 66 | return Entries.count(MetaKey) == 1; |
| 67 | } |
| 68 | |
| 69 | bool indexRecords::Load(const string Filename) /*{{{*/ |
| 70 | { |
| 71 | FileFd Fd; |
| 72 | if (OpenMaybeClearSignedFile(Filename, Fd) == false) |
| 73 | return false; |
| 74 | |
| 75 | pkgTagFile TagFile(&Fd, Fd.Size()); |
| 76 | if (_error->PendingError() == true) |
| 77 | { |
| 78 | strprintf(ErrorText, _("Unable to parse Release file %s"),Filename.c_str()); |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | pkgTagSection Section; |
| 83 | const char *Start, *End; |
| 84 | if (TagFile.Step(Section) == false) |
| 85 | { |
| 86 | strprintf(ErrorText, _("No sections in Release file %s"), Filename.c_str()); |
| 87 | return false; |
| 88 | } |
| 89 | |
| 90 | Suite = Section.FindS("Suite"); |
| 91 | Dist = Section.FindS("Codename"); |
| 92 | |
| 93 | int i; |
| 94 | for (i=0;HashString::SupportedHashes()[i] != NULL; i++) |
| 95 | { |
| 96 | if (!Section.Find(HashString::SupportedHashes()[i], Start, End)) |
| 97 | continue; |
| 98 | |
| 99 | string Name; |
| 100 | string Hash; |
| 101 | unsigned long long Size; |
| 102 | while (Start < End) |
| 103 | { |
| 104 | if (!parseSumData(Start, End, Name, Hash, Size)) |
| 105 | return false; |
| 106 | indexRecords::checkSum *Sum = new indexRecords::checkSum; |
| 107 | Sum->MetaKeyFilename = Name; |
| 108 | Sum->Hash = HashString(HashString::SupportedHashes()[i],Hash); |
| 109 | Sum->Size = Size; |
| 110 | Entries[Name] = Sum; |
| 111 | } |
| 112 | break; |
| 113 | } |
| 114 | |
| 115 | if(HashString::SupportedHashes()[i] == NULL) |
| 116 | { |
| 117 | strprintf(ErrorText, _("No Hash entry in Release file %s"), Filename.c_str()); |
| 118 | return false; |
| 119 | } |
| 120 | |
| 121 | string Label = Section.FindS("Label"); |
| 122 | string StrDate = Section.FindS("Date"); |
| 123 | string StrValidUntil = Section.FindS("Valid-Until"); |
| 124 | |
| 125 | // if we have a Valid-Until header in the Release file, use it as default |
| 126 | if (StrValidUntil.empty() == false) |
| 127 | { |
| 128 | if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false) |
| 129 | { |
| 130 | strprintf(ErrorText, _("Invalid 'Valid-Until' entry in Release file %s"), Filename.c_str()); |
| 131 | return false; |
| 132 | } |
| 133 | } |
| 134 | // get the user settings for this archive and use what expires earlier |
| 135 | int MaxAge = _config->FindI("Acquire::Max-ValidTime", 0); |
| 136 | if (Label.empty() == false) |
| 137 | MaxAge = _config->FindI(("Acquire::Max-ValidTime::" + Label).c_str(), MaxAge); |
| 138 | int MinAge = _config->FindI("Acquire::Min-ValidTime", 0); |
| 139 | if (Label.empty() == false) |
| 140 | MinAge = _config->FindI(("Acquire::Min-ValidTime::" + Label).c_str(), MinAge); |
| 141 | |
| 142 | if(MaxAge == 0 && |
| 143 | (MinAge == 0 || ValidUntil == 0)) // No user settings, use the one from the Release file |
| 144 | return true; |
| 145 | |
| 146 | time_t date; |
| 147 | if (RFC1123StrToTime(StrDate.c_str(), date) == false) |
| 148 | { |
| 149 | strprintf(ErrorText, _("Invalid 'Date' entry in Release file %s"), Filename.c_str()); |
| 150 | return false; |
| 151 | } |
| 152 | |
| 153 | if (MinAge != 0 && ValidUntil != 0) { |
| 154 | time_t const min_date = date + MinAge; |
| 155 | if (ValidUntil < min_date) |
| 156 | ValidUntil = min_date; |
| 157 | } |
| 158 | if (MaxAge != 0) { |
| 159 | time_t const max_date = date + MaxAge; |
| 160 | if (ValidUntil == 0 || ValidUntil > max_date) |
| 161 | ValidUntil = max_date; |
| 162 | } |
| 163 | |
| 164 | return true; |
| 165 | } |
| 166 | /*}}}*/ |
| 167 | std::vector<string> indexRecords::MetaKeys() /*{{{*/ |
| 168 | { |
| 169 | std::vector<std::string> keys; |
| 170 | std::map<string,checkSum *>::iterator I = Entries.begin(); |
| 171 | while(I != Entries.end()) { |
| 172 | keys.push_back((*I).first); |
| 173 | ++I; |
| 174 | } |
| 175 | return keys; |
| 176 | } |
| 177 | /*}}}*/ |
| 178 | bool indexRecords::parseSumData(const char *&Start, const char *End, /*{{{*/ |
| 179 | string &Name, string &Hash, unsigned long long &Size) |
| 180 | { |
| 181 | Name = ""; |
| 182 | Hash = ""; |
| 183 | Size = 0; |
| 184 | /* Skip over the first blank */ |
| 185 | while ((*Start == '\t' || *Start == ' ' || *Start == '\n' || *Start == '\r') |
| 186 | && Start < End) |
| 187 | Start++; |
| 188 | if (Start >= End) |
| 189 | return false; |
| 190 | |
| 191 | /* Move EntryEnd to the end of the first entry (the hash) */ |
| 192 | const char *EntryEnd = Start; |
| 193 | while ((*EntryEnd != '\t' && *EntryEnd != ' ') |
| 194 | && EntryEnd < End) |
| 195 | EntryEnd++; |
| 196 | if (EntryEnd == End) |
| 197 | return false; |
| 198 | |
| 199 | Hash.append(Start, EntryEnd-Start); |
| 200 | |
| 201 | /* Skip over intermediate blanks */ |
| 202 | Start = EntryEnd; |
| 203 | while (*Start == '\t' || *Start == ' ') |
| 204 | Start++; |
| 205 | if (Start >= End) |
| 206 | return false; |
| 207 | |
| 208 | EntryEnd = Start; |
| 209 | /* Find the end of the second entry (the size) */ |
| 210 | while ((*EntryEnd != '\t' && *EntryEnd != ' ' ) |
| 211 | && EntryEnd < End) |
| 212 | EntryEnd++; |
| 213 | if (EntryEnd == End) |
| 214 | return false; |
| 215 | |
| 216 | Size = strtoull (Start, NULL, 10); |
| 217 | |
| 218 | /* Skip over intermediate blanks */ |
| 219 | Start = EntryEnd; |
| 220 | while (*Start == '\t' || *Start == ' ') |
| 221 | Start++; |
| 222 | if (Start >= End) |
| 223 | return false; |
| 224 | |
| 225 | EntryEnd = Start; |
| 226 | /* Find the end of the third entry (the filename) */ |
| 227 | while ((*EntryEnd != '\t' && *EntryEnd != ' ' && |
| 228 | *EntryEnd != '\n' && *EntryEnd != '\r') |
| 229 | && EntryEnd < End) |
| 230 | EntryEnd++; |
| 231 | |
| 232 | Name.append(Start, EntryEnd-Start); |
| 233 | Start = EntryEnd; //prepare for the next round |
| 234 | return true; |
| 235 | } |
| 236 | /*}}}*/ |
| 237 | indexRecords::indexRecords() |
| 238 | { |
| 239 | } |
| 240 | |
| 241 | indexRecords::indexRecords(const string ExpectedDist) : |
| 242 | ExpectedDist(ExpectedDist), ValidUntil(0) |
| 243 | { |
| 244 | } |