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-rw-r--r--methods/gpgv.cc209
1 files changed, 122 insertions, 87 deletions
diff --git a/methods/gpgv.cc b/methods/gpgv.cc
index 9135b49c5..f66e3356f 100644
--- a/methods/gpgv.cc
+++ b/methods/gpgv.cc
@@ -102,21 +102,27 @@ static bool IsTheSameKey(std::string const &validsig, std::string const &goodsig
return validsig.compare(24, 16, goodsig, strlen("GOODSIG "), 16) == 0;
}
+struct APT_HIDDEN SignersStorage {
+ std::vector<std::string> Good;
+ std::vector<std::string> Bad;
+ std::vector<std::string> Worthless;
+ // a worthless signature is a expired or revoked one
+ std::vector<Signer> SoonWorthless;
+ std::vector<std::string> NoPubKey;
+ std::vector<std::string> Valid;
+ std::vector<std::string> SignedBy;
+};
class GPGVMethod : public aptMethod
{
private:
string VerifyGetSigners(const char *file, const char *outfile,
vector<string> const &keyFpts,
vector<string> const &keyFiles,
- vector<string> &GoodSigners,
- vector<string> &BadSigners,
- vector<string> &WorthlessSigners,
- vector<Signer> &SoonWorthlessSigners,
- vector<string> &NoPubKeySigners);
+ SignersStorage &Signers);
protected:
virtual bool URIAcquire(std::string const &Message, FetchItem *Itm) APT_OVERRIDE;
public:
- GPGVMethod() : aptMethod("gpgv","1.0",SingleInstance | SendConfig) {};
+ GPGVMethod() : aptMethod("gpgv", "1.1", SingleInstance | SendConfig){};
};
static void PushEntryWithKeyID(std::vector<std::string> &Signers, char * const buffer, bool const Debug)
{
@@ -146,14 +152,18 @@ static void PushEntryWithUID(std::vector<std::string> &Signers, char * const buf
std::clog << "Got " << msg << " !" << std::endl;
Signers.push_back(msg);
}
+static void implodeVector(std::vector<std::string> const &vec, std::ostream &out, char const * const sep)
+{
+ if (vec.empty())
+ return;
+ std::copy(vec.begin(), std::prev(vec.end()), std::ostream_iterator<std::string>(out, sep));
+ out << *vec.rbegin();
+ return;
+}
string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
vector<string> const &keyFpts,
vector<string> const &keyFiles,
- vector<string> &GoodSigners,
- vector<string> &BadSigners,
- vector<string> &WorthlessSigners,
- vector<Signer> &SoonWorthlessSigners,
- vector<string> &NoPubKeySigners)
+ SignersStorage &Signers)
{
bool const Debug = DebugEnabled();
@@ -171,11 +181,7 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
else if (pid == 0)
{
std::ostringstream keys;
- if (keyFiles.empty() == false)
- {
- std::copy(keyFiles.begin(), keyFiles.end()-1, std::ostream_iterator<std::string>(keys, ","));
- keys << *keyFiles.rbegin();
- }
+ implodeVector(keyFiles, keys, ",");
ExecGPGV(outfile, file, 3, fd, keys.str());
}
close(fd[1]);
@@ -183,7 +189,6 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
FILE *pipein = fdopen(fd[0], "r");
// Loop over the output of apt-key (which really is gnupg), and check the signatures.
- std::vector<std::string> ValidSigners;
std::vector<std::string> ErrSigners;
std::map<std::string, std::vector<std::string>> SubKeyMapping;
size_t buffersize = 0;
@@ -201,25 +206,25 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
// if we improve the apt method communication stuff later
// it will be better.
if (strncmp(buffer, GNUPGBADSIG, sizeof(GNUPGBADSIG)-1) == 0)
- PushEntryWithUID(BadSigners, buffer, Debug);
+ PushEntryWithUID(Signers.Bad, buffer, Debug);
else if (strncmp(buffer, GNUPGERRSIG, sizeof(GNUPGERRSIG)-1) == 0)
PushEntryWithKeyID(ErrSigners, buffer, Debug);
else if (strncmp(buffer, GNUPGNOPUBKEY, sizeof(GNUPGNOPUBKEY)-1) == 0)
{
- PushEntryWithKeyID(NoPubKeySigners, buffer, Debug);
+ PushEntryWithKeyID(Signers.NoPubKey, buffer, Debug);
ErrSigners.erase(std::remove_if(ErrSigners.begin(), ErrSigners.end(), [&](std::string const &errsig) {
return errsig.compare(strlen("ERRSIG "), 16, buffer, sizeof(GNUPGNOPUBKEY), 16) == 0; }), ErrSigners.end());
}
else if (strncmp(buffer, GNUPGNODATA, sizeof(GNUPGNODATA)-1) == 0)
gotNODATA = true;
else if (strncmp(buffer, GNUPGEXPKEYSIG, sizeof(GNUPGEXPKEYSIG)-1) == 0)
- PushEntryWithUID(WorthlessSigners, buffer, Debug);
+ PushEntryWithUID(Signers.Worthless, buffer, Debug);
else if (strncmp(buffer, GNUPGEXPSIG, sizeof(GNUPGEXPSIG)-1) == 0)
- PushEntryWithUID(WorthlessSigners, buffer, Debug);
+ PushEntryWithUID(Signers.Worthless, buffer, Debug);
else if (strncmp(buffer, GNUPGREVKEYSIG, sizeof(GNUPGREVKEYSIG)-1) == 0)
- PushEntryWithUID(WorthlessSigners, buffer, Debug);
+ PushEntryWithUID(Signers.Worthless, buffer, Debug);
else if (strncmp(buffer, GNUPGGOODSIG, sizeof(GNUPGGOODSIG)-1) == 0)
- PushEntryWithKeyID(GoodSigners, buffer, Debug);
+ PushEntryWithKeyID(Signers.Good, buffer, Debug);
else if (strncmp(buffer, GNUPGVALIDSIG, sizeof(GNUPGVALIDSIG)-1) == 0)
{
std::istringstream iss(buffer + sizeof(GNUPGVALIDSIG));
@@ -232,16 +237,16 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
case Digest::State::Weak:
// Treat them like an expired key: For that a message about expiry
// is emitted, a VALIDSIG, but no GOODSIG.
- SoonWorthlessSigners.push_back({sig, digest.name});
+ Signers.SoonWorthless.push_back({sig, digest.name});
if (Debug == true)
std::clog << "Got weak VALIDSIG, key ID: " << sig << std::endl;
break;
case Digest::State::Untrusted:
// Treat them like an expired key: For that a message about expiry
// is emitted, a VALIDSIG, but no GOODSIG.
- WorthlessSigners.push_back(sig);
- GoodSigners.erase(std::remove_if(GoodSigners.begin(), GoodSigners.end(), [&](std::string const &goodsig) {
- return IsTheSameKey(sig, goodsig); }), GoodSigners.end());
+ Signers.Worthless.push_back(sig);
+ Signers.Good.erase(std::remove_if(Signers.Good.begin(), Signers.Good.end(), [&](std::string const &goodsig) {
+ return IsTheSameKey(sig, goodsig); }), Signers.Good.end());
if (Debug == true)
std::clog << "Got untrusted VALIDSIG, key ID: " << sig << std::endl;
break;
@@ -252,7 +257,7 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
break;
}
- ValidSigners.push_back(sig);
+ Signers.Valid.push_back(sig);
if (tokens.size() > 9 && sig != tokens[9])
SubKeyMapping[tokens[9]].emplace_back(sig);
@@ -264,7 +269,7 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
}
fclose(pipein);
free(buffer);
- std::move(ErrSigners.begin(), ErrSigners.end(), std::back_inserter(WorthlessSigners));
+ std::move(ErrSigners.begin(), ErrSigners.end(), std::back_inserter(Signers.Worthless));
// apt-key has a --keyid parameter, but this requires gpg, so we call it without it
// and instead check after the fact which keyids where used for verification
@@ -273,11 +278,11 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
if (Debug == true)
{
std::clog << "GoodSigs needs to be limited to keyid(s): ";
- std::copy(keyFpts.begin(), keyFpts.end(), std::ostream_iterator<std::string>(std::clog, ", "));
+ implodeVector(keyFpts, std::clog, ", ");
std::clog << "\n";
}
std::vector<std::string> filteredGood;
- for (auto &&good: GoodSigners)
+ for (auto &&good: Signers.Good)
{
if (Debug == true)
std::clog << "Key " << good << " is good sig, is it also a valid and allowed one? ";
@@ -293,9 +298,10 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
if (IsTheSameKey(l, good))
{
// GOODSIG might be "just" a longid, so we check VALIDSIG which is always a fingerprint
- if (std::find(ValidSigners.cbegin(), ValidSigners.cend(), l) == ValidSigners.cend())
+ if (std::find(Signers.Valid.cbegin(), Signers.Valid.cend(), l) == Signers.Valid.cend())
continue;
found = true;
+ Signers.SignedBy.push_back(l + "!");
break;
}
else if (exactKey == false)
@@ -306,9 +312,11 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
for (auto const &sub : master->second)
if (IsTheSameKey(sub, good))
{
- if (std::find(ValidSigners.cbegin(), ValidSigners.cend(), sub) == ValidSigners.cend())
+ if (std::find(Signers.Valid.cbegin(), Signers.Valid.cend(), sub) == Signers.Valid.cend())
continue;
found = true;
+ Signers.SignedBy.push_back(l);
+ Signers.SignedBy.push_back(sub + "!");
break;
}
if (found)
@@ -320,10 +328,28 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
if (found)
filteredGood.emplace_back(std::move(good));
else
- NoPubKeySigners.emplace_back(std::move(good));
+ Signers.NoPubKey.emplace_back(std::move(good));
}
- GoodSigners = std::move(filteredGood);
+ Signers.Good= std::move(filteredGood);
+ }
+ else
+ {
+ // for gpg an expired key is valid, too, but we want only the valid & good ones
+ for (auto const &v : Signers.Valid)
+ if (std::any_of(Signers.Good.begin(), Signers.Good.end(),
+ [&v](std::string const &g) { return IsTheSameKey(v, g); }))
+ Signers.SignedBy.push_back(v + "!");
+ for (auto sub : SubKeyMapping)
+ if (std::any_of(sub.second.begin(), sub.second.end(),
+ [&](std::string const &s) {
+ if (std::find(Signers.Valid.begin(), Signers.Valid.end(), s) == Signers.Valid.end())
+ return false;
+ return std::any_of(Signers.Good.begin(), Signers.Good.end(),
+ [&s](std::string const &g) { return IsTheSameKey(s, g); });
+ }))
+ Signers.SignedBy.push_back(sub.first);
}
+ std::sort(Signers.SignedBy.begin(), Signers.SignedBy.end());
int status;
waitpid(pid, &status, 0);
@@ -334,16 +360,20 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
if (Debug)
{
- std::cerr << "Summary:" << std::endl << " Good: ";
- std::copy(GoodSigners.begin(), GoodSigners.end(), std::ostream_iterator<std::string>(std::cerr, ", "));
- std::cerr << std::endl << " Bad: ";
- std::copy(BadSigners.begin(), BadSigners.end(), std::ostream_iterator<std::string>(std::cerr, ", "));
- std::cerr << std::endl << " Worthless: ";
- std::copy(WorthlessSigners.begin(), WorthlessSigners.end(), std::ostream_iterator<std::string>(std::cerr, ", "));
- std::cerr << std::endl << " SoonWorthless: ";
- std::for_each(SoonWorthlessSigners.begin(), SoonWorthlessSigners.end(), [](Signer const &sig) { std::cerr << sig.key << ", "; });
- std::cerr << std::endl << " NoPubKey: ";
- std::copy(NoPubKeySigners.begin(), NoPubKeySigners.end(), std::ostream_iterator<std::string>(std::cerr, ", "));
+ std::cerr << "Summary:\n Good: ";
+ implodeVector(Signers.Good, std::cerr, ", ");
+ std::cerr << "\n Valid: ";
+ implodeVector(Signers.Valid, std::cerr, ", ");
+ std::cerr << "\n Bad: ";
+ implodeVector(Signers.Bad, std::cerr, ", ");
+ std::cerr << "\n Worthless: ";
+ implodeVector(Signers.Worthless, std::cerr, ", ");
+ std::cerr << "\n SoonWorthless: ";
+ std::for_each(Signers.SoonWorthless.begin(), Signers.SoonWorthless.end(), [](Signer const &sig) { std::cerr << sig.key << ", "; });
+ std::cerr << "\n NoPubKey: ";
+ implodeVector(Signers.NoPubKey, std::cerr, ", ");
+ std::cerr << "\n Signed-By: ";
+ implodeVector(Signers.SignedBy, std::cerr, ", ");
std::cerr << std::endl << " NODATA: " << (gotNODATA ? "yes" : "no") << std::endl;
}
@@ -369,12 +399,12 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile,
{
// gpgv will report success, but we want to enforce a certain keyring
// so if we haven't found the key the valid we found is in fact invalid
- if (GoodSigners.empty())
+ if (Signers.Good.empty())
return _("At least one invalid signature was encountered.");
}
else
{
- if (GoodSigners.empty())
+ if (Signers.Good.empty())
return _("Internal error: Good signature, but could not determine key fingerprint?!");
}
return "";
@@ -391,16 +421,7 @@ bool GPGVMethod::URIAcquire(std::string const &Message, FetchItem *Itm)
{
URI const Get = Itm->Uri;
string const Path = Get.Host + Get.Path; // To account for relative paths
- vector<string> GoodSigners;
- vector<string> BadSigners;
- // a worthless signature is a expired or revoked one
- vector<string> WorthlessSigners;
- vector<Signer> SoonWorthlessSigners;
- vector<string> NoPubKeySigners;
-
- FetchResult Res;
- Res.Filename = Itm->DestFile;
- URIStart(Res);
+ SignersStorage Signers;
std::vector<std::string> keyFpts, keyFiles;
for (auto &&key : VectorizeString(LookupTag(Message, "Signed-By"), ','))
@@ -410,69 +431,83 @@ bool GPGVMethod::URIAcquire(std::string const &Message, FetchItem *Itm)
keyFpts.emplace_back(std::move(key));
// Run apt-key on file, extract contents and get the key ID of the signer
- string const msg = VerifyGetSigners(Path.c_str(), Itm->DestFile.c_str(), keyFpts, keyFiles,
- GoodSigners, BadSigners, WorthlessSigners,
- SoonWorthlessSigners, NoPubKeySigners);
+ string const msg = VerifyGetSigners(Path.c_str(), Itm->DestFile.c_str(), keyFpts, keyFiles, Signers);
if (_error->PendingError())
return false;
// Check if all good signers are soon worthless and warn in that case
- if (std::all_of(GoodSigners.begin(), GoodSigners.end(), [&](std::string const &good) {
- return std::any_of(SoonWorthlessSigners.begin(), SoonWorthlessSigners.end(), [&](Signer const &weak) {
+ if (std::all_of(Signers.Good.begin(), Signers.Good.end(), [&](std::string const &good) {
+ return std::any_of(Signers.SoonWorthless.begin(), Signers.SoonWorthless.end(), [&](Signer const &weak) {
return IsTheSameKey(weak.key, good);
});
}))
{
- for (auto const & Signer : SoonWorthlessSigners)
+ for (auto const & Signer : Signers.SoonWorthless)
// TRANSLATORS: The second %s is the reason and is untranslated for repository owners.
Warning(_("Signature by key %s uses weak digest algorithm (%s)"), Signer.key.c_str(), Signer.note.c_str());
}
- if (GoodSigners.empty() || !BadSigners.empty() || !NoPubKeySigners.empty())
+ if (Signers.Good.empty() || !Signers.Bad.empty() || !Signers.NoPubKey.empty())
{
string errmsg;
// In this case, something bad probably happened, so we just go
// with what the other method gave us for an error message.
- if (BadSigners.empty() && WorthlessSigners.empty() && NoPubKeySigners.empty())
+ if (Signers.Bad.empty() && Signers.Worthless.empty() && Signers.NoPubKey.empty())
errmsg = msg;
else
{
- if (!BadSigners.empty())
+ if (!Signers.Bad.empty())
{
errmsg += _("The following signatures were invalid:\n");
- for (vector<string>::iterator I = BadSigners.begin();
- I != BadSigners.end(); ++I)
- errmsg += (*I + "\n");
+ for (auto const &I : Signers.Bad)
+ errmsg.append(I).append("\n");
}
- if (!WorthlessSigners.empty())
+ if (!Signers.Worthless.empty())
{
errmsg += _("The following signatures were invalid:\n");
- for (vector<string>::iterator I = WorthlessSigners.begin();
- I != WorthlessSigners.end(); ++I)
- errmsg += (*I + "\n");
+ for (auto const &I : Signers.Worthless)
+ errmsg.append(I).append("\n");
}
- if (!NoPubKeySigners.empty())
+ if (!Signers.NoPubKey.empty())
{
errmsg += _("The following signatures couldn't be verified because the public key is not available:\n");
- for (vector<string>::iterator I = NoPubKeySigners.begin();
- I != NoPubKeySigners.end(); ++I)
- errmsg += (*I + "\n");
+ for (auto const &I : Signers.NoPubKey)
+ errmsg.append(I).append("\n");
}
}
// this is only fatal if we have no good sigs or if we have at
// least one bad signature. good signatures and NoPubKey signatures
// happen easily when a file is signed with multiple signatures
- if(GoodSigners.empty() or !BadSigners.empty())
- return _error->Error("%s", errmsg.c_str());
+ if (Signers.Good.empty() or !Signers.Bad.empty())
+ return _error->Error("%s", errmsg.c_str());
+ }
+
+ std::unordered_map<std::string, std::string> fields;
+ fields.emplace("URI", Itm->Uri);
+ fields.emplace("Filename", Itm->DestFile);
+ if (Signers.SignedBy.empty() == false)
+ {
+ std::ostringstream out;
+ implodeVector(Signers.SignedBy, out, "\n");
+ fields.emplace("Signed-By", out.str());
+ }
+ {
+ // Just pass the raw output up, because passing it as a real data
+ // structure is too difficult with the method stuff. We keep it
+ // as three separate vectors for future extensibility.
+ std::vector<std::string> gpgvoutput;
+ std::move(Signers.Good.begin(), Signers.Good.end(), std::back_inserter(gpgvoutput));
+ std::move(Signers.Bad.begin(), Signers.Bad.end(), std::back_inserter(gpgvoutput));
+ std::move(Signers.NoPubKey.begin(), Signers.NoPubKey.end(), std::back_inserter(gpgvoutput));
+ if (gpgvoutput.empty() == false)
+ {
+ std::ostringstream out;
+ implodeVector(gpgvoutput, out, "\n");
+ fields.emplace("GPGVOutput", out.str());
+ }
}
-
- // Just pass the raw output up, because passing it as a real data
- // structure is too difficult with the method stuff. We keep it
- // as three separate vectors for future extensibility.
- Res.GPGVOutput = GoodSigners;
- std::move(BadSigners.begin(), BadSigners.end(), std::back_inserter(Res.GPGVOutput));
- std::move(NoPubKeySigners.begin(), NoPubKeySigners.end(), std::back_inserter(Res.GPGVOutput));
- URIDone(Res);
+ SendMessage("201 URI Done", std::move(fields));
+ Dequeue();
if (DebugEnabled())
std::clog << "apt-key succeeded\n";
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 01:03:51 +0000