X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/cfde4904a7b61e2a3c75322a08a6fac3c062d65d..5e8b2b74ab565ffb72e035ce89a7a991d4de3dcf:/methods/gpgv.cc diff --git a/methods/gpgv.cc b/methods/gpgv.cc index ba7389cba..c58e6cc45 100644 --- a/methods/gpgv.cc +++ b/methods/gpgv.cc @@ -1,10 +1,9 @@ #include #include #include +#include #include -#include -#include #include #include #include @@ -17,12 +16,18 @@ #define GNUPGBADSIG "[GNUPG:] BADSIG" #define GNUPGNOPUBKEY "[GNUPG:] NO_PUBKEY" #define GNUPGVALIDSIG "[GNUPG:] VALIDSIG" +#define GNUPGGOODSIG "[GNUPG:] GOODSIG" +#define GNUPGKEYEXPIRED "[GNUPG:] KEYEXPIRED" +#define GNUPGREVKEYSIG "[GNUPG:] REVKEYSIG" +#define GNUPGNODATA "[GNUPG:] NODATA" class GPGVMethod : public pkgAcqMethod { private: string VerifyGetSigners(const char *file, const char *outfile, - vector &GoodSigners, vector &BadSigners, + vector &GoodSigners, + vector &BadSigners, + vector &WorthlessSigners, vector &NoPubKeySigners); protected: @@ -36,44 +41,50 @@ class GPGVMethod : public pkgAcqMethod string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, vector &GoodSigners, vector &BadSigners, + vector &WorthlessSigners, vector &NoPubKeySigners) { + bool const Debug = _config->FindB("Debug::Acquire::gpgv", false); // setup a (empty) stringstream for formating the return value std::stringstream ret; ret.str(""); - if (_config->FindB("Debug::Acquire::gpgv", false)) - { - std::cerr << "inside VerifyGetSigners" << std::endl; - } + if (Debug == true) + std::clog << "inside VerifyGetSigners" << std::endl; + pid_t pid; int fd[2]; FILE *pipein; int status; - struct stat buff; - string gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv"); - string pubringpath = _config->Find("APT::GPGV::TrustedKeyring", "/etc/apt/trusted.gpg"); - if (_config->FindB("Debug::Acquire::gpgv", false)) + string const gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv"); + // FIXME: remove support for deprecated APT::GPGV setting + string const trustedFile = _config->FindFile("Dir::Etc::Trusted", + _config->Find("APT::GPGV::TrustedKeyring", "/etc/apt/trusted.gpg").c_str()); + string const trustedPath = _config->FindDir("Dir::Etc::TrustedParts", "/etc/apt/trusted.gpg.d"); + if (Debug == true) { - std::cerr << "gpgv path: " << gpgvpath << std::endl; - std::cerr << "Keyring path: " << pubringpath << std::endl; + std::clog << "gpgv path: " << gpgvpath << std::endl; + std::clog << "Keyring file: " << trustedFile << std::endl; + std::clog << "Keyring path: " << trustedPath << std::endl; } - if (stat(pubringpath.c_str(), &buff) != 0) + vector keyrings = GetListOfFilesInDir(trustedPath, "gpg", false); + if (FileExists(trustedFile) == true) + keyrings.push_back(trustedFile); + + if (keyrings.empty() == true) { - ioprintf(ret, _("Couldn't access keyring: '%s'"), strerror(errno)); + // TRANSLATOR: %s is the trusted keyring parts directory + ioprintf(ret, _("No keyring installed in %s."), trustedPath.c_str()); return ret.str(); } + if (pipe(fd) < 0) - { return "Couldn't create pipe"; - } pid = fork(); if (pid < 0) - { return string("Couldn't spawn new process") + strerror(errno); - } else if (pid == 0) { const char *Args[400]; @@ -82,8 +93,18 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, Args[i++] = gpgvpath.c_str(); Args[i++] = "--status-fd"; Args[i++] = "3"; - Args[i++] = "--keyring"; - Args[i++] = pubringpath.c_str(); + Args[i++] = "--ignore-time-conflict"; + for (vector::const_iterator K = keyrings.begin(); + K != keyrings.end(); ++K) + { + Args[i++] = "--keyring"; + Args[i++] = K->c_str(); + // check overflow (minus a bit of extra space at the end) + if(i >= sizeof(Args)/sizeof(char*)-5) { + std::clog << _("E: Too many keyrings should be passed to gpgv. Exiting.") << std::endl; + exit(111); + } + } Configuration::Item const *Opts; Opts = _config->Tree("Acquire::gpgv::Options"); @@ -95,8 +116,9 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, if (Opts->Value.empty() == true) continue; Args[i++] = Opts->Value.c_str(); - if(i >= 395) { - std::cerr << _("E: Argument list from Acquire::gpgv::Options too long. Exiting.") << std::endl; + // check overflow (minus a bit of extra space at the end) + if(i >= sizeof(Args)/sizeof(char*)-5) { + std::clog << _("E: Argument list from Acquire::gpgv::Options too long. Exiting.") << std::endl; exit(111); } } @@ -105,14 +127,14 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, Args[i++] = outfile; Args[i++] = NULL; - if (_config->FindB("Debug::Acquire::gpgv", false)) + if (Debug == true) { - std::cerr << "Preparing to exec: " << gpgvpath; + std::clog << "Preparing to exec: " << gpgvpath; for(unsigned int j=0;Args[j] != NULL; j++) - std::cerr << " " << Args[j]; - std::cerr << std::endl; + std::clog << " " << Args[j]; + std::clog << std::endl; } - int nullfd = open("/dev/null", O_RDONLY); + int const nullfd = open("/dev/null", O_RDONLY); close(fd[0]); // Redirect output to /dev/null; we read from the status fd dup2(nullfd, STDOUT_FILENO); @@ -120,9 +142,9 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, // Redirect the pipe to the status fd (3) dup2(fd[1], 3); - putenv("LANG="); - putenv("LC_ALL="); - putenv("LC_MESSAGES="); + putenv((char *)"LANG="); + putenv((char *)"LC_ALL="); + putenv((char *)"LC_MESSAGES="); execvp(gpgvpath.c_str(), (char **)Args); exit(111); @@ -151,8 +173,8 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, break; *(buffer+bufferoff) = '\0'; bufferoff = 0; - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Read: " << buffer << std::endl; + if (Debug == true) + std::clog << "Read: " << buffer << std::endl; // Push the data into three separate vectors, which // we later concatenate. They're kept separate so @@ -160,36 +182,53 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, // it will be better. if (strncmp(buffer, GNUPGBADSIG, sizeof(GNUPGBADSIG)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got BADSIG! " << std::endl; + if (Debug == true) + std::clog << "Got BADSIG! " << std::endl; BadSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGNOPUBKEY, sizeof(GNUPGNOPUBKEY)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got NO_PUBKEY " << std::endl; + if (Debug == true) + std::clog << "Got NO_PUBKEY " << std::endl; NoPubKeySigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } - - if (strncmp(buffer, GNUPGVALIDSIG, sizeof(GNUPGVALIDSIG)-1) == 0) + if (strncmp(buffer, GNUPGNODATA, sizeof(GNUPGBADSIG)-1) == 0) + { + if (Debug == true) + std::clog << "Got NODATA! " << std::endl; + BadSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); + } + if (strncmp(buffer, GNUPGKEYEXPIRED, sizeof(GNUPGKEYEXPIRED)-1) == 0) + { + if (Debug == true) + std::clog << "Got KEYEXPIRED! " << std::endl; + WorthlessSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); + } + if (strncmp(buffer, GNUPGREVKEYSIG, sizeof(GNUPGREVKEYSIG)-1) == 0) + { + if (Debug == true) + std::clog << "Got REVKEYSIG! " << std::endl; + WorthlessSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); + } + if (strncmp(buffer, GNUPGGOODSIG, sizeof(GNUPGGOODSIG)-1) == 0) { char *sig = buffer + sizeof(GNUPGPREFIX); - char *p = sig + sizeof("VALIDSIG"); + char *p = sig + sizeof("GOODSIG"); while (*p && isxdigit(*p)) p++; *p = 0; - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got VALIDSIG, key ID:" << sig << std::endl; + if (Debug == true) + std::clog << "Got GOODSIG, key ID:" << sig << std::endl; GoodSigners.push_back(string(sig)); } } fclose(pipein); waitpid(pid, &status, 0); - if (_config->FindB("Debug::Acquire::gpgv", false)) + if (Debug == true) { - std::cerr << "gpgv exited\n"; + std::clog << "gpgv exited\n"; } if (WEXITSTATUS(status) == 0) @@ -204,7 +243,7 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, } else if (WEXITSTATUS(status) == 111) { - ioprintf(ret, _("Could not execute '%s' to verify signature (is gnupg installed?)"), gpgvpath.c_str()); + ioprintf(ret, _("Could not execute '%s' to verify signature (is gpgv installed?)"), gpgvpath.c_str()); return ret.str(); } else @@ -220,6 +259,8 @@ bool GPGVMethod::Fetch(FetchItem *Itm) string keyID; vector GoodSigners; vector BadSigners; + // a worthless signature is a expired or revoked one + vector WorthlessSigners; vector NoPubKeySigners; FetchResult Res; @@ -228,13 +269,14 @@ bool GPGVMethod::Fetch(FetchItem *Itm) // Run gpgv on file, extract contents and get the key ID of the signer string msg = VerifyGetSigners(Path.c_str(), Itm->DestFile.c_str(), - GoodSigners, BadSigners, NoPubKeySigners); + GoodSigners, BadSigners, WorthlessSigners, + NoPubKeySigners); if (GoodSigners.empty() || !BadSigners.empty() || !NoPubKeySigners.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() && NoPubKeySigners.empty()) + if (BadSigners.empty() && WorthlessSigners.empty() && NoPubKeySigners.empty()) errmsg = msg; else { @@ -245,6 +287,13 @@ bool GPGVMethod::Fetch(FetchItem *Itm) I != BadSigners.end(); I++) errmsg += (*I + "\n"); } + if (!WorthlessSigners.empty()) + { + errmsg += _("The following signatures were invalid:\n"); + for (vector::iterator I = WorthlessSigners.begin(); + I != WorthlessSigners.end(); I++) + errmsg += (*I + "\n"); + } if (!NoPubKeySigners.empty()) { errmsg += _("The following signatures couldn't be verified because the public key is not available:\n"); @@ -257,26 +306,9 @@ bool GPGVMethod::Fetch(FetchItem *Itm) // 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(errmsg.c_str()); + return _error->Error("%s", errmsg.c_str()); } - // Transfer the modification times - struct stat Buf; - if (stat(Path.c_str(),&Buf) != 0) - return _error->Errno("stat",_("Failed to stat %s"), Path.c_str()); - - struct utimbuf TimeBuf; - TimeBuf.actime = Buf.st_atime; - TimeBuf.modtime = Buf.st_mtime; - if (utime(Itm->DestFile.c_str(),&TimeBuf) != 0) - return _error->Errno("utime",_("Failed to set modification time")); - - if (stat(Itm->DestFile.c_str(),&Buf) != 0) - return _error->Errno("stat",_("Failed to stat")); - - // Return a Done response - Res.LastModified = Buf.st_mtime; - Res.Size = Buf.st_size; // 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. @@ -287,7 +319,7 @@ bool GPGVMethod::Fetch(FetchItem *Itm) if (_config->FindB("Debug::Acquire::gpgv", false)) { - std::cerr << "gpgv succeeded\n"; + std::clog << "gpgv succeeded\n"; } return true;