#include <stddef.h>
#include <algorithm>
#include <unistd.h>
+#include <stdlib.h>
#include <string>
#include <iostream>
/*}}}*/
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;
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;
+ // 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;
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;
+
+ Hashes hashes(*this);
+ FileFd file(filename, FileFd::ReadOnly);
HashString const * const hsf = find("Checksum-FileSize");
- if (hsf != NULL && hsf->VerifyFile(filename) == false)
- return false;
- return true;
+ 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 /*{{{*/
class PrivateHashes {
public:
unsigned long long FileSize;
+ unsigned int CalcHashes;
- PrivateHashes() : FileSize(0) {}
+ 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, unsigned int const Hashes)
+bool Hashes::Add(const unsigned char * const Data, unsigned long long const Size)
{
+ if (Size == 0)
+ return true;
bool Res = true;
APT_IGNORE_DEPRECATED_PUSH
- if ((Hashes & MD5SUM) == MD5SUM)
+ if ((d->CalcHashes & MD5SUM) == MD5SUM)
Res &= MD5.Add(Data, Size);
- if ((Hashes & SHA1SUM) == SHA1SUM)
+ if ((d->CalcHashes & SHA1SUM) == SHA1SUM)
Res &= SHA1.Add(Data, Size);
- if ((Hashes & SHA256SUM) == SHA256SUM)
+ if ((d->CalcHashes & SHA256SUM) == SHA256SUM)
Res &= SHA256.Add(Data, Size);
- if ((Hashes & SHA512SUM) == SHA512SUM)
+ if ((d->CalcHashes & SHA512SUM) == SHA512SUM)
Res &= SHA512.Add(Data, Size);
APT_IGNORE_DEPRECATED_POP
d->FileSize += Size;
return Res;
}
-bool Hashes::AddFD(int const Fd,unsigned long long Size, unsigned int const Hashes)
+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 (Add(Buf, Res, Hashes) == false)
+ if (Add(Buf, Res) == false)
return false;
}
return true;
}
-bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, unsigned int const Hashes)
+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 (Add(Buf, a, Hashes) == false)
+ 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
- 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 ((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
- std::string SizeStr;
- strprintf(SizeStr, "%llu", d->FileSize);
- hashes.push_back(HashString("Checksum-FileSize", SizeStr));
+ hashes.FileSize(d->FileSize);
return hashes;
}
APT_IGNORE_DEPRECATED_PUSH
-Hashes::Hashes() { d = new PrivateHashes(); }
+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