1 files changed, 81 insertions, 25 deletions

diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index bb11a3fca..6e7080bc9 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -29,7 +29,7 @@
 
 const char * HashString::_SupportedHashes[] =
 {
-   "SHA512", "SHA256", "SHA1", "MD5Sum", NULL
+   "SHA512", "SHA256", "SHA1", "MD5Sum", "Checksum-FileSize", NULL
 };
 
 HashString::HashString()
@@ -111,6 +111,8 @@ std::string HashString::GetHashForFile(std::string filename) const      /*{{{*/
       SHA512.AddFD(Fd);
       fileHash = (std::string)SHA512.Result();
    }
+   else if (strcasecmp(Type.c_str(), "Checksum-FileSize") == 0)
+      strprintf(fileHash, "%llu", Fd.FileSize());
    Fd.Close();
 
    return fileHash;
@@ -141,11 +143,27 @@ APT_PURE bool HashString::operator!=(HashString const &other) const
 }
 									/*}}}*/
 
+bool HashStringList::usable() const					/*{{{*/
+{
+   if (empty() == true)
+      return false;
+   std::string const forcedType = _config->Find("Acquire::ForceHash", "");
+   if (forcedType.empty() == true)
+   {
+      // FileSize alone isn't usable
+      for (std::vector<HashString>::const_iterator hs = list.begin(); hs != list.end(); ++hs)
+	 if (hs->HashType() != "Checksum-FileSize")
+	    return true;
+      return false;
+   }
+   return find(forcedType) != NULL;
+}
+									/*}}}*/
 HashString const * HashStringList::find(char const * const type) const /*{{{*/
 {
    if (type == NULL || type[0] == '\0')
    {
-      std::string forcedType = _config->Find("Acquire::ForceHash", "");
+      std::string const forcedType = _config->Find("Acquire::ForceHash", "");
       if (forcedType.empty() == false)
 	 return find(forcedType.c_str());
       for (char const * const * t = HashString::SupportedHashes(); *t != NULL; ++t)
@@ -191,11 +209,23 @@ bool HashStringList::VerifyFile(std::string filename) const		/*{{{*/
    HashString const * const hs = find(NULL);
    if (hs == NULL || hs->VerifyFile(filename) == false)
       return false;
+   HashString const * const hsf = find("Checksum-FileSize");
+   if (hsf != NULL && hsf->VerifyFile(filename) == false)
+      return false;
    return true;
 }
 									/*}}}*/
 bool HashStringList::operator==(HashStringList const &other) const	/*{{{*/
 {
+   std::string const forcedType = _config->Find("Acquire::ForceHash", "");
+   if (forcedType.empty() == false)
+   {
+      HashString const * const hs = find(forcedType);
+      HashString const * const ohs = other.find(forcedType);
+      if (hs == NULL || ohs == NULL)
+	 return false;
+      return *hs == *ohs;
+   }
    short matches = 0;
    for (const_iterator hs = begin(); hs != end(); ++hs)
    {
@@ -216,11 +246,32 @@ bool HashStringList::operator!=(HashStringList const &other) const
 }
 									/*}}}*/
 
-// Hashes::AddFD - Add the contents of the FD				/*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool Hashes::AddFD(int const Fd,unsigned long long Size, bool const addMD5,
-		   bool const addSHA1, bool const addSHA256, bool const addSHA512)
+// PrivateHashes							/*{{{*/
+class PrivateHashes {
+public:
+   unsigned long long FileSize;
+
+   PrivateHashes() : FileSize(0) {}
+};
+									/*}}}*/
+// Hashes::Add* - Add the contents of data or FD			/*{{{*/
+bool Hashes::Add(const unsigned char * const Data,unsigned long long const Size, unsigned int const Hashes)
+{
+   bool Res = true;
+APT_IGNORE_DEPRECATED_PUSH
+   if ((Hashes & MD5SUM) == MD5SUM)
+      Res &= MD5.Add(Data, Size);
+   if ((Hashes & SHA1SUM) == SHA1SUM)
+      Res &= SHA1.Add(Data, Size);
+   if ((Hashes & SHA256SUM) == SHA256SUM)
+      Res &= SHA256.Add(Data, Size);
+   if ((Hashes & SHA512SUM) == SHA512SUM)
+      Res &= SHA512.Add(Data, Size);
+APT_IGNORE_DEPRECATED_POP
+   d->FileSize += Size;
+   return Res;
+}
+bool Hashes::AddFD(int const Fd,unsigned long long Size, unsigned int const Hashes)
 {
    unsigned char Buf[64*64];
    bool const ToEOF = (Size == UntilEOF);
@@ -234,19 +285,12 @@ bool Hashes::AddFD(int const Fd,unsigned long long Size, bool const addMD5,
       if (ToEOF && Res == 0) // EOF
 	 break;
       Size -= Res;
-      if (addMD5 == true)
-	 MD5.Add(Buf,Res);
-      if (addSHA1 == true)
-	 SHA1.Add(Buf,Res);
-      if (addSHA256 == true)
-	 SHA256.Add(Buf,Res);
-      if (addSHA512 == true)
-	 SHA512.Add(Buf,Res);
+      if (Add(Buf, Res, Hashes) == false)
+	 return false;
    }
    return true;
 }
-bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, bool const addMD5,
-		   bool const addSHA1, bool const addSHA256, bool const addSHA512)
+bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, unsigned int const Hashes)
 {
    unsigned char Buf[64*64];
    bool const ToEOF = (Size == 0);
@@ -265,15 +309,27 @@ bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, bool const addMD5,
       else if (a == 0) // EOF
 	 break;
       Size -= a;
-      if (addMD5 == true)
-	 MD5.Add(Buf, a);
-      if (addSHA1 == true)
-	 SHA1.Add(Buf, a);
-      if (addSHA256 == true)
-	 SHA256.Add(Buf, a);
-      if (addSHA512 == true)
-	 SHA512.Add(Buf, a);
+      if (Add(Buf, a, Hashes) == false)
+	 return false;
    }
    return true;
 }
 									/*}}}*/
+HashStringList Hashes::GetHashStringList()
+{
+   HashStringList hashes;
+APT_IGNORE_DEPRECATED_PUSH
+   hashes.push_back(HashString("MD5Sum", MD5.Result().Value()));
+   hashes.push_back(HashString("SHA1", SHA1.Result().Value()));
+   hashes.push_back(HashString("SHA256", SHA256.Result().Value()));
+   hashes.push_back(HashString("SHA512", SHA512.Result().Value()));
+APT_IGNORE_DEPRECATED_POP
+   std::string SizeStr;
+   strprintf(SizeStr, "%llu", d->FileSize);
+   hashes.push_back(HashString("Checksum-FileSize", SizeStr));
+   return hashes;
+}
+APT_IGNORE_DEPRECATED_PUSH
+Hashes::Hashes() { d = new PrivateHashes(); }
+Hashes::~Hashes() { delete d; }
+APT_IGNORE_DEPRECATED_POP