##################################################################### */
/*}}}*/
// Include Files /*{{{*/
+#include <config.h>
+
#include <apt-pkg/hashes.h>
-
-#include <unistd.h>
-#include <system.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/md5.h>
+#include <apt-pkg/sha1.h>
+#include <apt-pkg/sha2.h>
+
+#include <stddef.h>
+#include <algorithm>
+#include <unistd.h>
+#include <string>
+#include <iostream>
+ /*}}}*/
+
+const char * HashString::_SupportedHashes[] =
+{
+ "SHA512", "SHA256", "SHA1", "MD5Sum", NULL
+};
+
+HashString::HashString()
+{
+}
+
+HashString::HashString(std::string Type, std::string Hash) : Type(Type), Hash(Hash)
+{
+}
+
+HashString::HashString(std::string StringedHash) /*{{{*/
+{
+ if (StringedHash.find(":") == std::string::npos)
+ {
+ // 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(":");
+ Type = StringedHash.substr(0,pos);
+ Hash = StringedHash.substr(pos+1, StringedHash.size() - pos);
+
+ if(_config->FindB("Debug::Hashes",false) == true)
+ std::clog << "HashString(string): " << Type << " : " << Hash << std::endl;
+}
+ /*}}}*/
+bool HashString::VerifyFile(std::string filename) const /*{{{*/
+{
+ std::string fileHash = GetHashForFile(filename);
+
+ if(_config->FindB("Debug::Hashes",false) == true)
+ std::clog << "HashString::VerifyFile: got: " << fileHash << " expected: " << toStr() << std::endl;
+
+ return (fileHash == Hash);
+}
+ /*}}}*/
+bool HashString::FromFile(std::string filename) /*{{{*/
+{
+ // pick the strongest hash
+ if (Type == "")
+ Type = _SupportedHashes[0];
+
+ Hash = GetHashForFile(filename);
+ return true;
+}
+ /*}}}*/
+std::string HashString::GetHashForFile(std::string filename) const /*{{{*/
+{
+ std::string fileHash;
+
+ FileFd Fd(filename, FileFd::ReadOnly);
+ if(strcasecmp(Type.c_str(), "MD5Sum") == 0)
+ {
+ MD5Summation MD5;
+ MD5.AddFD(Fd);
+ fileHash = (std::string)MD5.Result();
+ }
+ else if (strcasecmp(Type.c_str(), "SHA1") == 0)
+ {
+ SHA1Summation SHA1;
+ SHA1.AddFD(Fd);
+ fileHash = (std::string)SHA1.Result();
+ }
+ else if (strcasecmp(Type.c_str(), "SHA256") == 0)
+ {
+ SHA256Summation SHA256;
+ SHA256.AddFD(Fd);
+ fileHash = (std::string)SHA256.Result();
+ }
+ else if (strcasecmp(Type.c_str(), "SHA512") == 0)
+ {
+ SHA512Summation SHA512;
+ SHA512.AddFD(Fd);
+ fileHash = (std::string)SHA512.Result();
+ }
+ Fd.Close();
+
+ return fileHash;
+}
+ /*}}}*/
+const char** HashString::SupportedHashes() /*{{{*/
+{
+ return _SupportedHashes;
+}
+ /*}}}*/
+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;
-// Hashes::AddFD - Add the contents of the FD /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool Hashes::AddFD(int Fd,unsigned long Size)
+ list.push_back(hashString);
+ return true;
+}
+ /*}}}*/
+bool HashStringList::VerifyFile(std::string filename) const /*{{{*/
+{
+ 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::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];
- int Res = 0;
- while (Size != 0)
+ bool const ToEOF = (Size == UntilEOF);
+ while (Size != 0 || ToEOF)
{
- Res = read(Fd,Buf,min(Size,(unsigned long)sizeof(Buf)));
- if (Res < 0 || (unsigned)Res != min(Size,(unsigned long)sizeof(Buf)))
+ unsigned long long n = sizeof(Buf);
+ if (!ToEOF) n = std::min(Size, n);
+ ssize_t const Res = read(Fd,Buf,n);
+ if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read
return false;
+ if (ToEOF && Res == 0) // EOF
+ break;
Size -= Res;
- MD5.Add(Buf,Res);
- SHA1.Add(Buf,Res);
- SHA256.Add(Buf,Res);
+ if (Add(Buf, Res, Hashes) == false)
+ return false;
+ }
+ return true;
+}
+bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, unsigned int const Hashes)
+{
+ unsigned char Buf[64*64];
+ bool const ToEOF = (Size == 0);
+ while (Size != 0 || ToEOF)
+ {
+ unsigned long long n = sizeof(Buf);
+ if (!ToEOF) n = std::min(Size, n);
+ unsigned long long a = 0;
+ if (Fd.Read(Buf, n, &a) == false) // error
+ return false;
+ if (ToEOF == false)
+ {
+ if (a != n) // short read
+ return false;
+ }
+ else if (a == 0) // EOF
+ break;
+ Size -= 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
projects / apt.git / blobdiff