X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/d59725349555939d39af81cf7746069d6aa3536c..6d3e5bd8e08564c5eb12ecd869de5bd71e25f59d:/methods/gpgv.cc diff --git a/methods/gpgv.cc b/methods/gpgv.cc index 150c1d315..41f138be6 100644 --- a/methods/gpgv.cc +++ b/methods/gpgv.cc @@ -1,17 +1,28 @@ -#include +#include + #include +#include +#include +#include #include -#include +#include -#include -#include -#include -#include -#include +#include #include +#include +#include +#include +#include #include +#include #include -#include +#include +#include + +#include + +using std::string; +using std::vector; #define GNUPGPREFIX "[GNUPG:]" #define GNUPGBADSIG "[GNUPG:] BADSIG" @@ -33,134 +44,56 @@ class GPGVMethod : public pkgAcqMethod protected: virtual bool Fetch(FetchItem *Itm); - + virtual bool Configuration(string Message); public: GPGVMethod() : pkgAcqMethod("1.0",SingleInstance | SendConfig) {}; }; +bool GPGVMethod::Configuration(string Message) +{ + if (pkgAcqMethod::Configuration(Message) == false) + return false; + + DropPrivsOrDie(); + + return true; +} + string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, vector &GoodSigners, vector &BadSigners, vector &WorthlessSigners, vector &NoPubKeySigners) { - // setup a (empty) stringstream for formating the return value - std::stringstream ret; - ret.str(""); + bool const Debug = _config->FindB("Debug::Acquire::gpgv", false); + + if (Debug == true) + std::clog << "inside VerifyGetSigners" << std::endl; - if (_config->FindB("Debug::Acquire::gpgv", false)) - { - std::cerr << "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)) - { - std::cerr << "gpgv path: " << gpgvpath << std::endl; - std::cerr << "Keyring path: " << pubringpath << std::endl; - } - if (stat(pubringpath.c_str(), &buff) != 0) - { - ioprintf(ret, _("Couldn't access keyring: '%s'"), strerror(errno)); - return ret.str(); - } if (pipe(fd) < 0) - { return "Couldn't create pipe"; - } - pid = fork(); + pid_t pid = fork(); if (pid < 0) - { return string("Couldn't spawn new process") + strerror(errno); - } else if (pid == 0) - { - const char *Args[400]; - unsigned int i = 0; - - Args[i++] = gpgvpath.c_str(); - Args[i++] = "--status-fd"; - Args[i++] = "3"; - Args[i++] = "--ignore-time-conflict"; - Args[i++] = "--keyring"; - Args[i++] = pubringpath.c_str(); - - Configuration::Item const *Opts; - Opts = _config->Tree("Acquire::gpgv::Options"); - if (Opts != 0) - { - Opts = Opts->Child; - for (; Opts != 0; Opts = Opts->Next) - { - 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; - exit(111); - } - } - } - Args[i++] = file; - Args[i++] = outfile; - Args[i++] = NULL; - - if (_config->FindB("Debug::Acquire::gpgv", false)) - { - std::cerr << "Preparing to exec: " << gpgvpath; - for(unsigned int j=0;Args[j] != NULL; j++) - std::cerr << " " << Args[j]; - std::cerr << std::endl; - } - int nullfd = open("/dev/null", O_RDONLY); - close(fd[0]); - // Redirect output to /dev/null; we read from the status fd - dup2(nullfd, STDOUT_FILENO); - dup2(nullfd, STDERR_FILENO); - // Redirect the pipe to the status fd (3) - dup2(fd[1], 3); - - putenv((char *)"LANG="); - putenv((char *)"LC_ALL="); - putenv((char *)"LC_MESSAGES="); - execvp(gpgvpath.c_str(), (char **)Args); - - exit(111); - } + ExecGPGV(outfile, file, 3, fd); close(fd[1]); - pipein = fdopen(fd[0], "r"); - - // Loop over the output of gpgv, and check the signatures. - size_t buffersize = 64; - char *buffer = (char *) malloc(buffersize); - size_t bufferoff = 0; + FILE *pipein = fdopen(fd[0], "r"); + + // Loop over the output of apt-key (which really is gnupg), and check the signatures. + size_t buffersize = 0; + char *buffer = NULL; while (1) { - int c; - - // Read a line. Sigh. - while ((c = getc(pipein)) != EOF && c != '\n') - { - if (bufferoff == buffersize) - buffer = (char *) realloc(buffer, buffersize *= 2); - *(buffer+bufferoff) = c; - bufferoff++; - } - if (bufferoff == 0 && c == EOF) - break; - *(buffer+bufferoff) = '\0'; - bufferoff = 0; - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Read: " << buffer << std::endl; + if (getline(&buffer, &buffersize, pipein) == -1) + break; + 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 @@ -168,33 +101,33 @@ 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, GNUPGNODATA, sizeof(GNUPGBADSIG)-1) == 0) { - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got NODATA! " << std::endl; + 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 (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got KEYEXPIRED! " << std::endl; + 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 (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got REVKEYSIG! " << std::endl; + if (Debug == true) + std::clog << "Got REVKEYSIG! " << std::endl; WorthlessSigners.push_back(string(buffer+sizeof(GNUPGPREFIX))); } if (strncmp(buffer, GNUPGGOODSIG, sizeof(GNUPGGOODSIG)-1) == 0) @@ -204,17 +137,19 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, while (*p && isxdigit(*p)) p++; *p = 0; - if (_config->FindB("Debug::Acquire::gpgv", false)) - std::cerr << "Got GOODSIG, key ID:" << sig << std::endl; + if (Debug == true) + std::clog << "Got GOODSIG, key ID:" << sig << std::endl; GoodSigners.push_back(string(sig)); } } fclose(pipein); + free(buffer); + int status; waitpid(pid, &status, 0); - if (_config->FindB("Debug::Acquire::gpgv", false)) + if (Debug == true) { - std::cerr << "gpgv exited\n"; + ioprintf(std::clog, "gpgv exited with status %i\n", WEXITSTATUS(status)); } if (WEXITSTATUS(status) == 0) @@ -224,18 +159,19 @@ string GPGVMethod::VerifyGetSigners(const char *file, const char *outfile, return ""; } else if (WEXITSTATUS(status) == 1) - { return _("At least one invalid signature was encountered."); - } else if (WEXITSTATUS(status) == 111) + return _("Could not execute 'apt-key' to verify signature (is gnupg installed?)"); + else if (WEXITSTATUS(status) == 112) { - ioprintf(ret, _("Could not execute '%s' to verify signature (is gpgv installed?)"), gpgvpath.c_str()); - return ret.str(); + // acquire system checks for "NODATA" to generate GPG errors (the others are only warnings) + std::string errmsg; + //TRANSLATORS: %s is a single techy word like 'NODATA' + strprintf(errmsg, _("Clearsigned file isn't valid, got '%s' (does the network require authentication?)"), "NODATA"); + return errmsg; } else - { - return _("Unknown error executing gpgv"); - } + return _("Unknown error executing apt-key"); } bool GPGVMethod::Fetch(FetchItem *Itm) @@ -253,7 +189,7 @@ bool GPGVMethod::Fetch(FetchItem *Itm) Res.Filename = Itm->DestFile; URIStart(Res); - // Run gpgv on file, extract contents and get the key ID of the signer + // Run apt-key on file, extract contents and get the key ID of the signer string msg = VerifyGetSigners(Path.c_str(), Itm->DestFile.c_str(), GoodSigners, BadSigners, WorthlessSigners, NoPubKeySigners); @@ -270,21 +206,21 @@ bool GPGVMethod::Fetch(FetchItem *Itm) { errmsg += _("The following signatures were invalid:\n"); for (vector::iterator I = BadSigners.begin(); - I != BadSigners.end(); I++) + 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++) + 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"); for (vector::iterator I = NoPubKeySigners.begin(); - I != NoPubKeySigners.end(); I++) + I != NoPubKeySigners.end(); ++I) errmsg += (*I + "\n"); } } @@ -305,7 +241,7 @@ bool GPGVMethod::Fetch(FetchItem *Itm) if (_config->FindB("Debug::Acquire::gpgv", false)) { - std::cerr << "gpgv succeeded\n"; + std::clog << "apt-key succeeded\n"; } return true; @@ -315,7 +251,7 @@ bool GPGVMethod::Fetch(FetchItem *Itm) int main() { setlocale(LC_ALL, ""); - + GPGVMethod Mth; return Mth.Run();