#include <stddef.h>
#include <algorithm>
#include <unistd.h>
+#include <stdlib.h>
#include <string>
#include <iostream>
/*}}}*/
const char * HashString::_SupportedHashes[] =
{
- "SHA512", "SHA256", "SHA1", "MD5Sum", NULL
+ "SHA512", "SHA256", "SHA1", "MD5Sum", "Checksum-FileSize", NULL
};
HashString::HashString()
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;
return (Type.empty() || Hash.empty());
}
/*}}}*/
+
+APT_PURE static bool IsConfigured(const char *name, const char *what)
+{
+ std::string option;
+ strprintf(option, "APT::Hashes::%s::%s", name, what);
+ return _config->FindB(option, false);
+}
+
+APT_PURE bool HashString::usable() const /*{{{*/
+{
+ return (
+ (Type != "Checksum-FileSize") &&
+ (Type != "MD5Sum") &&
+ (Type != "SHA1") &&
+ !IsConfigured(Type.c_str(), "Untrusted")
+ );
+}
+ /*}}}*/
std::string HashString::toStr() const /*{{{*/
{
return Type + ":" + Hash;
}
/*}}}*/
+bool HashStringList::usable() const /*{{{*/
+{
+ if (empty() == true)
+ return false;
+ std::string const forcedType = _config->Find("Acquire::ForceHash", "");
+ if (forcedType.empty() == true)
+ {
+ // See if there is at least one usable hash
+ for (auto const &hs: list)
+ if (hs.usable())
+ 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 forcedType = _config->Find("Acquire::ForceHash", "");
+ 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)
return NULL;
}
/*}}}*/
+unsigned long long HashStringList::FileSize() const /*{{{*/
+{
+ HashString const * const hsf = find("Checksum-FileSize");
+ if (hsf == NULL)
+ return 0;
+ std::string const hv = hsf->HashValue();
+ return strtoull(hv.c_str(), NULL, 10);
+}
+ /*}}}*/
+bool HashStringList::FileSize(unsigned long long const Size) /*{{{*/
+{
+ std::string size;
+ strprintf(size, "%llu", Size);
+ return push_back(HashString("Checksum-FileSize", size));
+}
+ /*}}}*/
bool HashStringList::supported(char const * const type) /*{{{*/
{
for (char const * const * t = HashString::SupportedHashes(); *t != NULL; ++t)
/*}}}*/
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)
+ if (usable() == false)
return false;
- return true;
+
+ Hashes hashes(*this);
+ FileFd file(filename, FileFd::ReadOnly);
+ HashString const * const hsf = find("Checksum-FileSize");
+ if (hsf != NULL)
+ {
+ std::string fileSize;
+ strprintf(fileSize, "%llu", file.FileSize());
+ if (hsf->HashValue() != fileSize)
+ return false;
+ }
+ hashes.AddFD(file);
+ HashStringList const hsl = hashes.GetHashStringList();
+ return hsl == *this;
}
/*}}}*/
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)
{
}
/*}}}*/
-// 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)
+// PrivateHashes /*{{{*/
+class PrivateHashes {
+public:
+ unsigned long long FileSize;
+ unsigned int CalcHashes;
+
+ explicit PrivateHashes(unsigned int const CalcHashes) : FileSize(0), CalcHashes(CalcHashes) {}
+ explicit PrivateHashes(HashStringList const &Hashes) : FileSize(0) {
+ unsigned int calcHashes = Hashes.usable() ? 0 : ~0;
+ if (Hashes.find("MD5Sum") != NULL)
+ calcHashes |= Hashes::MD5SUM;
+ if (Hashes.find("SHA1") != NULL)
+ calcHashes |= Hashes::SHA1SUM;
+ if (Hashes.find("SHA256") != NULL)
+ calcHashes |= Hashes::SHA256SUM;
+ if (Hashes.find("SHA512") != NULL)
+ calcHashes |= Hashes::SHA512SUM;
+ CalcHashes = calcHashes;
+ }
+};
+ /*}}}*/
+// Hashes::Add* - Add the contents of data or FD /*{{{*/
+bool Hashes::Add(const unsigned char * const Data, unsigned long long const Size)
+{
+ bool Res = true;
+APT_IGNORE_DEPRECATED_PUSH
+ if ((d->CalcHashes & MD5SUM) == MD5SUM)
+ Res &= MD5.Add(Data, Size);
+ if ((d->CalcHashes & SHA1SUM) == SHA1SUM)
+ Res &= SHA1.Add(Data, Size);
+ if ((d->CalcHashes & SHA256SUM) == SHA256SUM)
+ Res &= SHA256.Add(Data, Size);
+ if ((d->CalcHashes & SHA512SUM) == SHA512SUM)
+ Res &= SHA512.Add(Data, Size);
+APT_IGNORE_DEPRECATED_POP
+ d->FileSize += Size;
+ return Res;
+}
+bool Hashes::Add(const unsigned char * const Data, unsigned long long const Size, unsigned int const Hashes)
+{
+ d->CalcHashes = Hashes;
+ return Add(Data, Size);
+}
+bool Hashes::AddFD(int const Fd,unsigned long long Size)
{
unsigned char Buf[64*64];
bool const ToEOF = (Size == UntilEOF);
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) == 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(int const Fd,unsigned long long Size, unsigned int const Hashes)
+{
+ d->CalcHashes = Hashes;
+ return AddFD(Fd, Size);
+}
+bool Hashes::AddFD(FileFd &Fd,unsigned long long Size)
{
unsigned char Buf[64*64];
bool const ToEOF = (Size == 0);
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) == false)
+ return false;
}
return true;
+}
+bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, unsigned int const Hashes)
+{
+ d->CalcHashes = Hashes;
+ return AddFD(Fd, Size);
}
/*}}}*/
+HashStringList Hashes::GetHashStringList()
+{
+ HashStringList hashes;
+APT_IGNORE_DEPRECATED_PUSH
+ if ((d->CalcHashes & MD5SUM) == MD5SUM)
+ hashes.push_back(HashString("MD5Sum", MD5.Result().Value()));
+ if ((d->CalcHashes & SHA1SUM) == SHA1SUM)
+ hashes.push_back(HashString("SHA1", SHA1.Result().Value()));
+ if ((d->CalcHashes & SHA256SUM) == SHA256SUM)
+ hashes.push_back(HashString("SHA256", SHA256.Result().Value()));
+ if ((d->CalcHashes & SHA512SUM) == SHA512SUM)
+ hashes.push_back(HashString("SHA512", SHA512.Result().Value()));
+APT_IGNORE_DEPRECATED_POP
+ hashes.FileSize(d->FileSize);
+ return hashes;
+}
+APT_IGNORE_DEPRECATED_PUSH
+Hashes::Hashes() : d(new PrivateHashes(~0)) { }
+Hashes::Hashes(unsigned int const Hashes) : d(new PrivateHashes(Hashes)) {}
+Hashes::Hashes(HashStringList const &Hashes) : d(new PrivateHashes(Hashes)) {}
+Hashes::~Hashes() { delete d; }
+APT_IGNORE_DEPRECATED_POP
projects / apt.git / blobdiff