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authorMichael Vogt <mvo@debian.org>2014-05-14 18:04:48 +0200
committerMichael Vogt <mvo@debian.org>2014-05-14 18:04:48 +0200
commite110d7bf5675f484c06b82f621ac98bedc464865 (patch)
tree70ce5da7ad75ccbaf4b30cf4809209993ba98b23 /apt-pkg/contrib
parent0b58b3f8917a49d83154fd3173bca36c1d617ef0 (diff)
parent4f6d26b4d41474aa390329b7e9cb167eb70b2821 (diff)
Merge remote-tracking branch 'donkult/debian/experimental' into debian/experimental
Conflicts: apt-pkg/acquire-item.cc apt-pkg/acquire-item.h
Diffstat (limited to 'apt-pkg/contrib')
-rw-r--r--apt-pkg/contrib/hashes.cc213
-rw-r--r--apt-pkg/contrib/hashes.h165
2 files changed, 321 insertions, 57 deletions
diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index 15f83615d..199e395f6 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -27,7 +27,7 @@
#include <iostream>
/*}}}*/
-const char* HashString::_SupportedHashes[] =
+const char * HashString::_SupportedHashes[] =
{
"SHA512", "SHA256", "SHA1", "MD5Sum", NULL
};
@@ -42,11 +42,16 @@ HashString::HashString(std::string Type, std::string Hash) : Type(Type), Hash(Ha
HashString::HashString(std::string StringedHash) /*{{{*/
{
- // legacy: md5sum without "MD5Sum:" prefix
- if (StringedHash.find(":") == std::string::npos && StringedHash.size() == 32)
+ if (StringedHash.find(":") == std::string::npos)
{
- Type = "MD5Sum";
- Hash = StringedHash;
+ // legacy: md5sum without "MD5Sum:" prefix
+ if (StringedHash.size() == 32)
+ {
+ Type = "MD5Sum";
+ Hash = StringedHash;
+ }
+ if(_config->FindB("Debug::Hashes",false) == true)
+ std::clog << "HashString(string): invalid StringedHash " << StringedHash << std::endl;
return;
}
std::string::size_type pos = StringedHash.find(":");
@@ -82,25 +87,25 @@ std::string HashString::GetHashForFile(std::string filename) const /*{{{*/
std::string fileHash;
FileFd Fd(filename, FileFd::ReadOnly);
- if(Type == "MD5Sum")
+ if(strcasecmp(Type.c_str(), "MD5Sum") == 0)
{
MD5Summation MD5;
MD5.AddFD(Fd);
fileHash = (std::string)MD5.Result();
}
- else if (Type == "SHA1")
+ else if (strcasecmp(Type.c_str(), "SHA1") == 0)
{
SHA1Summation SHA1;
SHA1.AddFD(Fd);
fileHash = (std::string)SHA1.Result();
}
- else if (Type == "SHA256")
+ else if (strcasecmp(Type.c_str(), "SHA256") == 0)
{
SHA256Summation SHA256;
SHA256.AddFD(Fd);
fileHash = (std::string)SHA256.Result();
}
- else if (Type == "SHA512")
+ else if (strcasecmp(Type.c_str(), "SHA512") == 0)
{
SHA512Summation SHA512;
SHA512.AddFD(Fd);
@@ -111,26 +116,147 @@ std::string HashString::GetHashForFile(std::string filename) const /*{{{*/
return fileHash;
}
/*}}}*/
-const char** HashString::SupportedHashes()
+const char** HashString::SupportedHashes() /*{{{*/
{
return _SupportedHashes;
}
-
-APT_PURE bool HashString::empty() const
+ /*}}}*/
+APT_PURE bool HashString::empty() const /*{{{*/
{
return (Type.empty() || Hash.empty());
}
+ /*}}}*/
+std::string HashString::toStr() const /*{{{*/
+{
+ return Type + ":" + Hash;
+}
+ /*}}}*/
+APT_PURE bool HashString::operator==(HashString const &other) const /*{{{*/
+{
+ return (strcasecmp(Type.c_str(), other.Type.c_str()) == 0 && Hash == other.Hash);
+}
+APT_PURE bool HashString::operator!=(HashString const &other) const
+{
+ return !(*this == other);
+}
+ /*}}}*/
+
+bool HashStringList::usable() const /*{{{*/
+{
+ if (empty() == true)
+ return false;
+ std::string const forcedType = _config->Find("Acquire::ForceHash", "");
+ if (forcedType.empty() == true)
+ return true;
+ return find(forcedType) != NULL;
+}
+ /*}}}*/
+HashString const * HashStringList::find(char const * const type) const /*{{{*/
+{
+ if (type == NULL || type[0] == '\0')
+ {
+ 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)
+ for (std::vector<HashString>::const_iterator hs = list.begin(); hs != list.end(); ++hs)
+ if (strcasecmp(hs->HashType().c_str(), *t) == 0)
+ return &*hs;
+ return NULL;
+ }
+ for (std::vector<HashString>::const_iterator hs = list.begin(); hs != list.end(); ++hs)
+ if (strcasecmp(hs->HashType().c_str(), type) == 0)
+ return &*hs;
+ return NULL;
+}
+ /*}}}*/
+bool HashStringList::supported(char const * const type) /*{{{*/
+{
+ for (char const * const * t = HashString::SupportedHashes(); *t != NULL; ++t)
+ if (strcasecmp(*t, type) == 0)
+ return true;
+ return false;
+}
+ /*}}}*/
+bool HashStringList::push_back(const HashString &hashString) /*{{{*/
+{
+ if (hashString.HashType().empty() == true ||
+ hashString.HashValue().empty() == true ||
+ supported(hashString.HashType().c_str()) == false)
+ return false;
+
+ // ensure that each type is added only once
+ HashString const * const hs = find(hashString.HashType().c_str());
+ if (hs != NULL)
+ return *hs == hashString;
-std::string HashString::toStr() const
+ list.push_back(hashString);
+ return true;
+}
+ /*}}}*/
+bool HashStringList::VerifyFile(std::string filename) const /*{{{*/
{
- return Type + std::string(":") + Hash;
+ if (list.empty() == true)
+ return false;
+ HashString const * const hs = find(NULL);
+ if (hs == NULL || hs->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 = other.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)
+ {
+ HashString const * const ohs = other.find(hs->HashType());
+ if (ohs == NULL)
+ continue;
+ if (*hs != *ohs)
+ return false;
+ ++matches;
+ }
+ if (matches == 0)
+ return false;
+ return true;
+}
+bool HashStringList::operator!=(HashStringList const &other) const
+{
+ return !(*this == other);
+}
+ /*}}}*/
-// 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)
+// 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;
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+ 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);
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic pop
+#endif
+ 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);
@@ -144,19 +270,12 @@ 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);
@@ -175,15 +294,35 @@ 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;
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+ 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()));
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic pop
+#endif
+ return hashes;
+}
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+ #pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
+#endif
+Hashes::Hashes() {}
+Hashes::~Hashes() {}
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic pop
+#endif
diff --git a/apt-pkg/contrib/hashes.h b/apt-pkg/contrib/hashes.h
index 7a62f8a8f..caeba006d 100644
--- a/apt-pkg/contrib/hashes.h
+++ b/apt-pkg/contrib/hashes.h
@@ -17,6 +17,7 @@
#include <apt-pkg/md5.h>
#include <apt-pkg/sha1.h>
#include <apt-pkg/sha2.h>
+#include <apt-pkg/macros.h>
#include <cstring>
#include <string>
@@ -41,7 +42,7 @@ class HashString
protected:
std::string Type;
std::string Hash;
- static const char* _SupportedHashes[10];
+ static const char * _SupportedHashes[10];
// internal helper
std::string GetHashForFile(std::string filename) const;
@@ -52,7 +53,8 @@ class HashString
HashString();
// get hash type used
- std::string HashType() { return Type; };
+ std::string HashType() const { return Type; };
+ std::string HashValue() const { return Hash; };
// verify the given filename against the currently loaded hash
bool VerifyFile(std::string filename) const;
@@ -64,37 +66,160 @@ class HashString
// helper
std::string toStr() const; // convert to str as "type:hash"
bool empty() const;
+ bool operator==(HashString const &other) const;
+ bool operator!=(HashString const &other) const;
// return the list of hashes we support
static APT_CONST const char** SupportedHashes();
};
+class HashStringList
+{
+ public:
+ /** find best hash if no specific one is requested
+ *
+ * @param type of the checksum to return, can be \b NULL
+ * @return If type is \b NULL (or the empty string) it will
+ * return the 'best' hash; otherwise the hash which was
+ * specifically requested. If no hash is found \b NULL will be returned.
+ */
+ HashString const * find(char const * const type) const;
+ HashString const * find(std::string const &type) const { return find(type.c_str()); }
+ /** check if the given hash type is supported
+ *
+ * @param type to check
+ * @return true if supported, otherwise false
+ */
+ static APT_PURE bool supported(char const * const type);
+ /** add the given #HashString to the list
+ *
+ * @param hashString to add
+ * @return true if the hash is added because it is supported and
+ * not already a different hash of the same type included, otherwise false
+ */
+ bool push_back(const HashString &hashString);
+ /** @return size of the list of HashStrings */
+ size_t size() const { return list.size(); }
+
+ /** take the 'best' hash and verify file with it
+ *
+ * @param filename to verify
+ * @return true if the file matches the hashsum, otherwise false
+ */
+ bool VerifyFile(std::string filename) const;
+
+ /** is the list empty ?
+ *
+ * @return \b true if the list is empty, otherwise \b false
+ */
+ bool empty() const { return list.empty(); }
+
+ /** has the list at least one good entry
+ *
+ * similar to #empty, but handles forced hashes.
+ *
+ * @return if no hash is forced, same result as #empty,
+ * if one is forced \b true if this has is available, \b false otherwise
+ */
+ bool usable() const;
+
+ typedef std::vector<HashString>::const_iterator const_iterator;
+
+ /** iterator to the first element */
+ const_iterator begin() const { return list.begin(); }
+
+ /** iterator to the end element */
+ const_iterator end() const { return list.end(); }
+
+ /** start fresh with a clear list */
+ void clear() { list.clear(); }
+
+ /** compare two HashStringList for similarity.
+ *
+ * Two lists are similar if at least one hashtype is in both lists
+ * and the hashsum matches. All hashes are checked by default,
+ * if one doesn't match false is returned regardless of how many
+ * matched before. If a hash is forced, only this hash is compared,
+ * all others are ignored.
+ */
+ bool operator==(HashStringList const &other) const;
+ bool operator!=(HashStringList const &other) const;
+
+ HashStringList() {}
+
+ // simplifying API-compatibility constructors
+ HashStringList(std::string const &hash) {
+ if (hash.empty() == false)
+ list.push_back(HashString(hash));
+ }
+ HashStringList(char const * const hash) {
+ if (hash != NULL && hash[0] != '\0')
+ list.push_back(HashString(hash));
+ }
+
+ private:
+ std::vector<HashString> list;
+};
+
class Hashes
{
+ /** \brief dpointer placeholder */
+ void *d;
+
public:
+ /* those will disappear in the future as it is hard to add new ones this way.
+ * Use Add* to build the results and get them via GetHashStringList() instead */
+ APT_DEPRECATED MD5Summation MD5;
+ APT_DEPRECATED SHA1Summation SHA1;
+ APT_DEPRECATED SHA256Summation SHA256;
+ APT_DEPRECATED SHA512Summation SHA512;
- MD5Summation MD5;
- SHA1Summation SHA1;
- SHA256Summation SHA256;
- SHA512Summation SHA512;
-
static const int UntilEOF = 0;
- inline bool Add(const unsigned char *Data,unsigned long long Size)
+ bool Add(const unsigned char * const Data, unsigned long long const Size, unsigned int const Hashes = ~0);
+ inline bool Add(const char * const Data)
+ {return Add((unsigned char const * const)Data,strlen(Data));};
+ inline bool Add(const unsigned char * const Beg,const unsigned char * const End)
+ {return Add(Beg,End-Beg);};
+
+ enum SupportedHashes { MD5SUM = (1 << 0), SHA1SUM = (1 << 1), SHA256SUM = (1 << 2),
+ SHA512SUM = (1 << 3) };
+ bool AddFD(int const Fd,unsigned long long Size = 0, unsigned int const Hashes = ~0);
+ bool AddFD(FileFd &Fd,unsigned long long Size = 0, unsigned int const Hashes = ~0);
+
+ HashStringList GetHashStringList();
+
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+ Hashes();
+ virtual ~Hashes();
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic pop
+#endif
+
+ private:
+ APT_HIDDEN APT_CONST inline unsigned int boolsToFlag(bool const addMD5, bool const addSHA1, bool const addSHA256, bool const addSHA512)
{
- return MD5.Add(Data,Size) && SHA1.Add(Data,Size) && SHA256.Add(Data,Size) && SHA512.Add(Data,Size);
+ unsigned int Hashes = ~0;
+ if (addMD5 == false) Hashes &= ~MD5SUM;
+ if (addSHA1 == false) Hashes &= ~SHA1SUM;
+ if (addSHA256 == false) Hashes &= ~SHA256SUM;
+ if (addSHA512 == false) Hashes &= ~SHA512SUM;
+ return Hashes;
+ }
+
+ public:
+ APT_DEPRECATED bool AddFD(int const Fd, unsigned long long Size, bool const addMD5,
+ bool const addSHA1, bool const addSHA256, bool const addSHA512) {
+ return AddFD(Fd, Size, boolsToFlag(addMD5, addSHA1, addSHA256, addSHA512));
+ };
+
+ APT_DEPRECATED bool AddFD(FileFd &Fd, unsigned long long Size, bool const addMD5,
+ bool const addSHA1, bool const addSHA256, bool const addSHA512) {
+ return AddFD(Fd, Size, boolsToFlag(addMD5, addSHA1, addSHA256, addSHA512));
};
- inline bool Add(const char *Data) {return Add((unsigned char const *)Data,strlen(Data));};
- inline bool AddFD(int const Fd,unsigned long long Size = 0)
- { return AddFD(Fd, Size, true, true, true, true); };
- bool AddFD(int const Fd, unsigned long long Size, bool const addMD5,
- bool const addSHA1, bool const addSHA256, bool const addSHA512);
- inline bool AddFD(FileFd &Fd,unsigned long long Size = 0)
- { return AddFD(Fd, Size, true, true, true, true); };
- bool AddFD(FileFd &Fd, unsigned long 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);};
};
#endif