merge with current debian apt/sid

[apt.git] / apt-pkg / indexrecords.cc

diff --git a/apt-pkg/indexrecords.cc b/apt-pkg/indexrecords.cc
index 396e1591f054a26a90178ce048eb5c4a8152c040..ba5b7c84620d72a3ae86d2d9297ad0f5a240ff06 100644 (file)
--- a/apt-pkg/indexrecords.cc
+++ b/apt-pkg/indexrecords.cc
@@ -7,9 +7,12 @@
 #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;
@@ -26,61 +29,122 @@ 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::Load(const string Filename)
+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)
    {
-      ErrorText = _(("Unable to parse Release file " + Filename).c_str());
+      strprintf(ErrorText, _("Unable to parse Release file %s"),Filename.c_str());
       return false;
    }
 
    pkgTagSection Section;
-   if (TagFile.Step(Section) == false)
-   {
-      ErrorText = _(("No sections in Release file " + Filename).c_str());
-      return false;
-   }
-
    const char *Start, *End;
-   Section.Get (Start, End, 0);
+   // 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");
-//    if (Dist.empty())
-//    {
-//       ErrorText = _(("No Codename entry in Release file " + Filename).c_str());
-//       return false;
-//    }
-   if (!Section.Find("MD5Sum", Start, End))
+
+   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)
    {
-      ErrorText = _(("No MD5Sum entry in Release file " + Filename).c_str());
+      strprintf(ErrorText, _("No Hash entry in Release file %s"), Filename.c_str());
       return false;
    }
-   string Name;
-   string MD5Hash;
-   size_t Size;
-   while (Start < End)
+
+   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 (!parseSumData(Start, End, Name, MD5Hash, Size))
+      if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false)
+      {
+        strprintf(ErrorText, _("Invalid 'Valid-Until' entry in Release file %s"), Filename.c_str());
         return false;
-      indexRecords::checkSum *Sum = new indexRecords::checkSum;
-      Sum->MetaKeyFilename = Name;
-      Sum->MD5Hash = MD5Hash;
-      Sum->Size = Size;
-      Entries[Name] = Sum;
+      }
    }
-   
-   string Strdate = Section.FindS("Date"); // FIXME: verify this somehow?
+   // 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);
+   int MinAge = _config->FindI("Acquire::Min-ValidTime", 0);
+   if (Label.empty() == false)
+      MinAge = _config->FindI(string("Acquire::Min-ValidTime::" + Label).c_str(), MinAge);
+
+   if(MaxAge == 0 &&
+      (MinAge == 0 || ValidUntil == 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;
+   }
+
+   if (MinAge != 0 && ValidUntil != 0) {
+      time_t const min_date = date + MinAge;
+      if (ValidUntil < min_date)
+        ValidUntil = min_date;
+   }
+   if (MaxAge != 0) {
+      time_t const max_date = date + MaxAge;
+      if (ValidUntil == 0 || ValidUntil > max_date)
+        ValidUntil = max_date;
+   }
+
    return true;
 }
-
-vector<string> indexRecords::MetaKeys()
+                                                                       /*}}}*/
+vector<string> indexRecords::MetaKeys()                                        /*{{{*/
 {
    std::vector<std::string> keys;
    std::map<string,checkSum *>::iterator I = Entries.begin();
@@ -90,8 +154,8 @@ vector<string> indexRecords::MetaKeys()
    }
    return keys;
 }
-
-bool indexRecords::parseSumData(const char *&Start, const char *End,
+                                                                       /*}}}*/
+bool indexRecords::parseSumData(const char *&Start, const char *End,   /*{{{*/
                                   string &Name, string &Hash, size_t &Size)
 {
    Name = "";
@@ -148,12 +212,12 @@ bool indexRecords::parseSumData(const char *&Start, const char *End,
    Start = EntryEnd; //prepare for the next round
    return true;
 }
-
+                                                                       /*}}}*/
 indexRecords::indexRecords()
 {
 }
 
 indexRecords::indexRecords(const string ExpectedDist) :
-   ExpectedDist(ExpectedDist)
+   ExpectedDist(ExpectedDist), ValidUntil(0)
 {
 }