enable Hashes::AddFD() to skip creation of certain hashes

[apt.git] / apt-pkg / contrib / hashes.h

diff --git a/apt-pkg/contrib/hashes.h b/apt-pkg/contrib/hashes.h
index b09ea9f6b3af69241eca734f4fb22c9c07d4d93c..e702fcca2fd9459d2fd2e66f1b95aaf94bd764ca 100644 (file)
--- a/apt-pkg/contrib/hashes.h
+++ b/apt-pkg/contrib/hashes.h
@@ -16,11 +16,42 @@
 
 #include <apt-pkg/md5.h>
 #include <apt-pkg/sha1.h>
-#include <apt-pkg/sha256.h>
+#include <apt-pkg/sha2.h>
 
 #include <algorithm>
+#include <vector>
+#include <cstring>
 
 using std::min;
+using std::vector;
+
+// helper class that contains hash function name
+// and hash
+class HashString
+{
+ protected:
+   string Type;
+   string Hash;
+   static const char * _SupportedHashes[10];
+
+ public:
+   HashString(string Type, string Hash);
+   HashString(string StringedHashString);  // init from str as "type:hash"
+   HashString();
+
+   // get hash type used
+   string HashType() { return Type; };
+
+   // verify the given filename against the currently loaded hash
+   bool VerifyFile(string filename) const;
+
+   // helper
+   string toStr() const;                    // convert to str as "type:hash"
+   bool empty() const;
+
+   // return the list of hashes we support
+   static const char** SupportedHashes();
+};
 
 class Hashes
 {
@@ -29,13 +60,17 @@ class Hashes
    MD5Summation MD5;
    SHA1Summation SHA1;
    SHA256Summation SHA256;
+   SHA512Summation SHA512;
    
    inline bool Add(const unsigned char *Data,unsigned long Size)
    {
-      return MD5.Add(Data,Size) && SHA1.Add(Data,Size) && SHA256.Add(Data,Size);
+      return MD5.Add(Data,Size) && SHA1.Add(Data,Size) && SHA256.Add(Data,Size) && SHA512.Add(Data,Size);
    };
    inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));};
-   bool AddFD(int Fd,unsigned long Size);
+   inline bool AddFD(int const Fd,unsigned long Size = 0)
+   { return AddFD(Fd, Size, true, true, true, true); };
+   bool AddFD(int const Fd, unsigned long Size, bool const addMD5,
+             bool const addSHA1, bool const addSHA256, bool const addSHA512);
    inline bool Add(const unsigned char *Beg,const unsigned char *End) 
                   {return Add(Beg,End-Beg);};
 };