Fix crash with empty architecture list

[apt.git] / apt-private / private-source.cc

diff --git a/apt-private/private-source.cc b/apt-private/private-source.cc
index c45af6651f1dbe9ae0fad00589e77c403506eb62..5aaf6f48b4b8eaa3c4cbd20e9e852bc13dbbd6f9 100644 (file)
--- a/apt-private/private-source.cc
+++ b/apt-private/private-source.cc
@@ -73,8 +73,6 @@ static pkgSrcRecords::Parser *FindSrc(const char *Name,
                               pkgSrcRecords &SrcRecs,std::string &Src,
                               CacheFile &Cache)
 {
-   if (Cache.BuildCaches(false) == false)
-      return nullptr;
    std::string VerTag, UserRequestedVerTag;
    std::string ArchTag = "";
    std::string RelTag = _config->Find("APT::Default-Release");
@@ -152,12 +150,12 @@ static pkgSrcRecords::Parser *FindSrc(const char *Name,
            // pick highest version for the arch unless the user wants
            // something else
            if (ArchTag != "" && VerTag == "" && RelTag == "")
-              if(Cache->VS().CmpVersion(VerTag, Ver.VerStr()) < 0)
+              if(Cache.GetPkgCache()->VS->CmpVersion(VerTag, Ver.VerStr()) < 0)
                  VerTag = Ver.VerStr();
 
            // We match against a concrete version (or a part of this version)
            if (VerTag.empty() == false &&
-                 (fuzzy == true || Cache->VS().CmpVersion(VerTag, Ver.VerStr()) != 0) && // exact match
+                 (fuzzy == true || Cache.GetPkgCache()->VS->CmpVersion(VerTag, Ver.VerStr()) != 0) && // exact match
                  (fuzzy == false || strncmp(VerTag.c_str(), Ver.VerStr(), VerTag.size()) != 0)) // fuzzy match
               continue;
 
@@ -275,11 +273,11 @@ static pkgSrcRecords::Parser *FindSrc(const char *Name,
 
                     // Ignore all versions which doesn't fit
                     if (VerTag.empty() == false &&
-                          Cache->VS().CmpVersion(VerTag, Ver) != 0) // exact match
+                          Cache.GetPkgCache()->VS->CmpVersion(VerTag, Ver) != 0) // exact match
                        continue;
 
                     // Newer version or an exact match? Save the hit
-                    if (Last == 0 || Cache->VS().CmpVersion(Version,Ver) < 0) {
+                    if (Last == 0 || Cache.GetPkgCache()->VS->CmpVersion(Version,Ver) < 0) {
                        Last = Parse;
                        Offset = Parse->Offset();
                        Version = Ver;
@@ -317,19 +315,15 @@ struct DscFile
 };
 bool DoSource(CommandLine &CmdL)
 {
-   CacheFile Cache;
-   if (Cache.Open(false) == false)
-      return false;
-
    if (CmdL.FileSize() <= 1)
       return _error->Error(_("Must specify at least one package to fetch source for"));
 
-   // Read the source list
-   if (Cache.BuildSourceList() == false)
+   CacheFile Cache;
+   if (Cache.BuildCaches(false) == false)
       return false;
-   pkgSourceList *List = Cache.GetSourceList();
 
    // Create the text record parsers
+   pkgSourceList * const List = Cache.GetSourceList();
    pkgSrcRecords SrcRecs(*List);
    if (_error->PendingError() == true)
       return false;
@@ -514,7 +508,7 @@ bool DoSource(CommandLine &CmdL)
       bool const fixBroken = _config->FindB("APT::Get::Fix-Broken", false);
       for (unsigned I = 0; I != J; ++I)
       {
-        std::string Dir = Dsc[I].Package + '-' + Cache->VS().UpstreamVersion(Dsc[I].Version.c_str());
+        std::string Dir = Dsc[I].Package + '-' + Cache.GetPkgCache()->VS->UpstreamVersion(Dsc[I].Version.c_str());
 
         // Diff only mode only fetches .diff files
         if (_config->FindB("APT::Get::Diff-Only",false) == true ||
@@ -728,8 +722,11 @@ bool DoBuildDep(CommandLine &CmdL)
               VolatileCmdL.size());
    }
 
+   bool const WantLock = _config->FindB("APT::Get::Print-URIs", false) == false;
    if (CmdL.FileList[1] != 0)
    {
+      if (Cache.BuildCaches(WantLock) == false)
+        return false;
       // Create the text record parsers
       pkgSrcRecords SrcRecs(*List);
       if (_error->PendingError() == true)
@@ -750,7 +747,6 @@ bool DoBuildDep(CommandLine &CmdL)
 
    Cache.AddIndexFile(new debStringPackageIndex(buildDepsPkgFile.str()));
 
-   bool WantLock = _config->FindB("APT::Get::Print-URIs", false) == false;
    if (Cache.Open(WantLock) == false)
       return false;
    pkgProblemResolver Fix(Cache.GetDepCache());