summaryrefslogtreecommitdiff
path: root/apt-pkg/contrib/hashes.cc
diff options
context:
space:
mode:
Diffstat (limited to 'apt-pkg/contrib/hashes.cc')
-rw-r--r--apt-pkg/contrib/hashes.cc237
1 files changed, 199 insertions, 38 deletions
diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index 15f83615d..55180c642 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -27,9 +27,9 @@
#include <iostream>
/*}}}*/
-const char* HashString::_SupportedHashes[] =
+const char * HashString::_SupportedHashes[] =
{
- "SHA512", "SHA256", "SHA1", "MD5Sum", NULL
+ "SHA512", "SHA256", "SHA1", "MD5Sum", "Checksum-FileSize", NULL
};
HashString::HashString()
@@ -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(":");
@@ -82,55 +87,196 @@ 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);
fileHash = (std::string)SHA512.Result();
}
+ else if (strcasecmp(Type.c_str(), "Checksum-FileSize") == 0)
+ strprintf(fileHash, "%llu", Fd.FileSize());
Fd.Close();
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);
+}
+ /*}}}*/
-std::string HashString::toStr() const
+bool HashStringList::usable() const /*{{{*/
+{
+ if (empty() == true)
+ return false;
+ std::string const forcedType = _config->Find("Acquire::ForceHash", "");
+ if (forcedType.empty() == true)
+ {
+ // FileSize alone isn't usable
+ for (std::vector<HashString>::const_iterator hs = list.begin(); hs != list.end(); ++hs)
+ if (hs->HashType() != "Checksum-FileSize")
+ return true;
+ return false;
+ }
+ 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) /*{{{*/
{
- return Type + std::string(":") + Hash;
+ 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;
-// 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)
+ // ensure that each type is added only once
+ HashString const * const hs = find(hashString.HashType().c_str());
+ if (hs != NULL)
+ return *hs == hashString;
+
+ 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;
+ HashString const * const hsf = find("Checksum-FileSize");
+ if (hsf != NULL && hsf->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 = 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);
+}
+ /*}}}*/
+
+// PrivateHashes /*{{{*/
+class PrivateHashes {
+public:
+ unsigned long long FileSize;
+
+ PrivateHashes() : FileSize(0) {}
+};
+ /*}}}*/
+// 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
+ d->FileSize += Size;
+ 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 +290,12 @@ 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 +314,37 @@ 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
+ std::string SizeStr;
+ strprintf(SizeStr, "%llu", d->FileSize);
+ hashes.push_back(HashString("Checksum-FileSize", SizeStr));
+ return hashes;
+}
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+Hashes::Hashes() { d = new PrivateHashes(); }
+Hashes::~Hashes() { delete d; }
+#if __GNUC__ >= 4
+ #pragma GCC diagnostic pop
+#endif