small documentation updates

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

diff --git a/apt-pkg/indexrecords.cc b/apt-pkg/indexrecords.cc
index ab208e246ebf6afe92c6747681d916e3c58579a1..8a72ca15182f3f31203da6b8d5b08e6e6b1698f4 100644 (file)
--- a/apt-pkg/indexrecords.cc
+++ b/apt-pkg/indexrecords.cc
@@ -3,12 +3,24 @@
 // $Id: indexrecords.cc,v 1.1.2.4 2003/12/30 02:11:43 mdz Exp $
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
+#include<config.h>
+
 #include <apt-pkg/indexrecords.h>
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
-#include <apti18n.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/hashes.h>
+#include <apt-pkg/gpgv.h>
+
 #include <sys/stat.h>
+#include <clocale>
+
+#include <apti18n.h>
+                                                                       /*}}}*/
+
+using std::string;
 
 string indexRecords::GetDist() const
 {
@@ -26,15 +38,31 @@ 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];
+   std::map<std::string, indexRecords::checkSum* >::const_iterator sum = Entries.find(MetaKey);
+   if (sum == Entries.end())
+      return NULL;
+   return sum->second;
 }
 
-bool indexRecords::Load(const string Filename)
+bool indexRecords::Exists(string const &MetaKey) const
 {
-   FileFd Fd(Filename, FileFd::ReadOnly);
-   pkgTagFile TagFile(&Fd, Fd.Size() + 256); // XXX
+   return Entries.count(MetaKey) == 1;
+}
+
+bool indexRecords::Load(const string Filename)                         /*{{{*/
+{
+   FileFd Fd;
+   if (OpenMaybeClearSignedFile(Filename, Fd) == false)
+      return false;
+
+   pkgTagFile TagFile(&Fd, Fd.Size());
    if (_error->PendingError() == true)
    {
       strprintf(ErrorText, _("Unable to parse Release file %s"),Filename.c_str());
@@ -42,15 +70,13 @@ bool indexRecords::Load(const string Filename)
    }
 
    pkgTagSection Section;
+   const char *Start, *End;
    if (TagFile.Step(Section) == false)
    {
       strprintf(ErrorText, _("No sections in Release file %s"), Filename.c_str());
       return false;
    }
 
-   const char *Start, *End;
-   Section.Get (Start, End, 0);
-
    Suite = Section.FindS("Suite");
    Dist = Section.FindS("Codename");
 
@@ -62,7 +88,7 @@ bool indexRecords::Load(const string Filename)
 
       string Name;
       string Hash;
-      size_t Size;
+      unsigned long long Size;
       while (Start < End)
       {
         if (!parseSumData(Start, End, Name, Hash, Size))
@@ -80,13 +106,55 @@ bool indexRecords::Load(const string Filename)
    {
       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);
+   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;
+   }
 
-   string Strdate = Section.FindS("Date"); // FIXME: verify this somehow?
    return true;
 }
-
-vector<string> indexRecords::MetaKeys()
+                                                                       /*}}}*/
+std::vector<string> indexRecords::MetaKeys()                           /*{{{*/
 {
    std::vector<std::string> keys;
    std::map<string,checkSum *>::iterator I = Entries.begin();
@@ -96,15 +164,15 @@ vector<string> indexRecords::MetaKeys()
    }
    return keys;
 }
-
-bool indexRecords::parseSumData(const char *&Start, const char *End,
-                                  string &Name, string &Hash, size_t &Size)
+                                                                       /*}}}*/
+bool indexRecords::parseSumData(const char *&Start, const char *End,   /*{{{*/
+                                  string &Name, string &Hash, unsigned long long &Size)
 {
    Name = "";
    Hash = "";
    Size = 0;
    /* Skip over the first blank */
-   while ((*Start == '\t' || *Start == ' ' || *Start == '\n')
+   while ((*Start == '\t' || *Start == ' ' || *Start == '\n' || *Start == '\r')
          && Start < End)
       Start++;
    if (Start >= End)
@@ -135,7 +203,7 @@ bool indexRecords::parseSumData(const char *&Start, const char *End,
    if (EntryEnd == End)
       return false;
    
-   Size = strtol (Start, NULL, 10);
+   Size = strtoull (Start, NULL, 10);
       
    /* Skip over intermediate blanks */
    Start = EntryEnd;
@@ -146,7 +214,8 @@ bool indexRecords::parseSumData(const char *&Start, const char *End,
    
    EntryEnd = Start;
    /* Find the end of the third entry (the filename) */
-   while ((*EntryEnd != '\t' && *EntryEnd != ' ' && *EntryEnd != '\n')
+   while ((*EntryEnd != '\t' && *EntryEnd != ' ' && 
+           *EntryEnd != '\n' && *EntryEnd != '\r')
          && EntryEnd < End)
       EntryEnd++;
 
@@ -154,12 +223,12 @@ 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)
 {
 }