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Fix handling of autoclosing for compressed files (Closes: #741685)
[apt.git] / apt-pkg / contrib / hashes.h
1 // -*- mode: cpp; mode: fold -*-
2 // Description /*{{{*/
3 // $Id: hashes.h,v 1.2 2001/03/11 05:30:20 jgg Exp $
4 /* ######################################################################
5
6 Hashes - Simple wrapper around the hash functions
7
8 This is just used to make building the methods simpler, this is the
9 only interface required..
10
11 ##################################################################### */
12 /*}}}*/
13 #ifndef APTPKG_HASHES_H
14 #define APTPKG_HASHES_H
15
16
17 #include <apt-pkg/md5.h>
18 #include <apt-pkg/sha1.h>
19 #include <apt-pkg/sha2.h>
20
21 #include <cstring>
22 #include <string>
23
24 #ifndef APT_8_CLEANER_HEADERS
25 using std::min;
26 using std::vector;
27 #endif
28 #ifndef APT_10_CLEANER_HEADERS
29 #include <apt-pkg/fileutl.h>
30 #include <algorithm>
31 #include <vector>
32 #endif
33
34
35 class FileFd;
36
37 // helper class that contains hash function name
38 // and hash
39 class HashString
40 {
41 protected:
42 std::string Type;
43 std::string Hash;
44 static const char* _SupportedHashes[10];
45
46 // internal helper
47 std::string GetHashForFile(std::string filename) const;
48
49 public:
50 HashString(std::string Type, std::string Hash);
51 HashString(std::string StringedHashString); // init from str as "type:hash"
52 HashString();
53
54 // get hash type used
55 std::string HashType() { return Type; };
56
57 // verify the given filename against the currently loaded hash
58 bool VerifyFile(std::string filename) const;
59
60 // generate a hash string from the given filename
61 bool FromFile(std::string filename);
62
63
64 // helper
65 std::string toStr() const; // convert to str as "type:hash"
66 bool empty() const;
67
68 // return the list of hashes we support
69 static APT_CONST const char** SupportedHashes();
70 };
71
72 class Hashes
73 {
74 public:
75
76 MD5Summation MD5;
77 SHA1Summation SHA1;
78 SHA256Summation SHA256;
79 SHA512Summation SHA512;
80
81 inline bool Add(const unsigned char *Data,unsigned long long Size)
82 {
83 return MD5.Add(Data,Size) && SHA1.Add(Data,Size) && SHA256.Add(Data,Size) && SHA512.Add(Data,Size);
84 };
85 inline bool Add(const char *Data) {return Add((unsigned char const *)Data,strlen(Data));};
86 inline bool AddFD(int const Fd,unsigned long long Size = 0)
87 { return AddFD(Fd, Size, true, true, true, true); };
88 bool AddFD(int const Fd, unsigned long long Size, bool const addMD5,
89 bool const addSHA1, bool const addSHA256, bool const addSHA512);
90 inline bool AddFD(FileFd &Fd,unsigned long long Size = 0)
91 { return AddFD(Fd, Size, true, true, true, true); };
92 bool AddFD(FileFd &Fd, unsigned long long Size, bool const addMD5,
93 bool const addSHA1, bool const addSHA256, bool const addSHA512);
94 inline bool Add(const unsigned char *Beg,const unsigned char *End)
95 {return Add(Beg,End-Beg);};
96 };
97
98 #endif