apt @VERSION@
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00001 // -*- mode: cpp; mode: fold -*- 00002 // Description /*{{{*/ 00003 // $Id: hashes.h,v 1.2 2001/03/11 05:30:20 jgg Exp $ 00004 /* ###################################################################### 00005 00006 Hashes - Simple wrapper around the hash functions 00007 00008 This is just used to make building the methods simpler, this is the 00009 only interface required.. 00010 00011 ##################################################################### */ 00012 /*}}}*/ 00013 #ifndef APTPKG_HASHES_H 00014 #define APTPKG_HASHES_H 00015 00016 00017 #include <apt-pkg/md5.h> 00018 #include <apt-pkg/sha1.h> 00019 #include <apt-pkg/sha256.h> 00020 00021 #include <algorithm> 00022 #include <vector> 00023 #include <cstring> 00024 00025 using std::min; 00026 using std::vector; 00027 00028 // helper class that contains hash function name 00029 // and hash 00030 class HashString 00031 { 00032 protected: 00033 string Type; 00034 string Hash; 00035 static const char * _SupportedHashes[10]; 00036 00037 public: 00038 HashString(string Type, string Hash); 00039 HashString(string StringedHashString); // init from str as "type:hash" 00040 HashString(); 00041 00042 // get hash type used 00043 string HashType() { return Type; }; 00044 00045 // verify the given filename against the currently loaded hash 00046 bool VerifyFile(string filename) const; 00047 00048 // helper 00049 string toStr() const; // convert to str as "type:hash" 00050 bool empty() const; 00051 00052 // return the list of hashes we support 00053 static const char** SupportedHashes(); 00054 }; 00055 00056 class Hashes 00057 { 00058 public: 00059 00060 MD5Summation MD5; 00061 SHA1Summation SHA1; 00062 SHA256Summation SHA256; 00063 00064 inline bool Add(const unsigned char *Data,unsigned long Size) 00065 { 00066 return MD5.Add(Data,Size) && SHA1.Add(Data,Size) && SHA256.Add(Data,Size); 00067 }; 00068 inline bool Add(const char *Data) {return Add((unsigned char *)Data,strlen(Data));}; 00069 bool AddFD(int Fd,unsigned long Size); 00070 inline bool Add(const unsigned char *Beg,const unsigned char *End) 00071 {return Add(Beg,End-Beg);}; 00072 }; 00073 00074 #endif