diff options
Diffstat (limited to 'lang/cpp/src/editinteractor.cpp')
| -rw-r--r-- | lang/cpp/src/editinteractor.cpp | 436 |
1 files changed, 0 insertions, 436 deletions
diff --git a/lang/cpp/src/editinteractor.cpp b/lang/cpp/src/editinteractor.cpp deleted file mode 100644 index 5f9236cb..00000000 --- a/lang/cpp/src/editinteractor.cpp +++ /dev/null @@ -1,436 +0,0 @@ -/* - editinteractor.cpp - Interface for edit interactors - Copyright (C) 2007 Klarälvdalens Datakonsult AB - 2016 Bundesamt für Sicherheit in der Informationstechnik - Software engineering by Intevation GmbH - - This file is part of GPGME++. - - GPGME++ is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public - License as published by the Free Software Foundation; either - version 2 of the License, or (at your option) any later version. - - GPGME++ is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU Library General Public License for more details. - - You should have received a copy of the GNU Library General Public License - along with GPGME++; see the file COPYING.LIB. If not, write to the - Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. -*/ - -#ifdef HAVE_CONFIG_H - #include "config.h" -#endif - -#include "editinteractor.h" -#include "callbacks.h" -#include "error.h" -#include "util.h" - -#include <gpgme.h> - -#ifdef _WIN32 -# include <io.h> -#include <windows.h> -#else -# include <unistd.h> -#endif - -#include <cerrno> -#include <cstring> -#include <cstdlib> - -#ifndef GPG_ERR_ALREADY_SIGNED -# define GPG_ERR_ALREADY_SIGNED GPG_ERR_USER_1 -#endif - -using namespace GpgME; - -static const char *status_to_string(unsigned int status); -static Error status_to_error(unsigned int status); -static Error parse_sc_op_failure(const char *args); - -class EditInteractor::Private -{ - friend class ::GpgME::EditInteractor; - friend class ::GpgME::CallbackHelper; - EditInteractor *const q; -public: - explicit Private(EditInteractor *qq); - ~Private(); - -private: - unsigned int state = StartState; - Error error; - std::FILE *debug = nullptr; - bool debugNeedsClosing = false; -}; - -class GpgME::CallbackHelper -{ -private: - static int writeAll(int fd, const void *buf, size_t count) - { - size_t toWrite = count; - while (toWrite > 0) { - const int n = gpgme_io_write(fd, buf, toWrite); - if (n < 0) { - return n; - } - toWrite -= n; - } - return count; - } - -public: - static int edit_interactor_callback_impl(void *opaque, gpgme_status_code_t status, const char *args, int fd) - { - EditInteractor::Private *ei = (EditInteractor::Private *)opaque; - - Error err = status_to_error(status); - - if (!err) { - - // advance to next state based on input: - const unsigned int oldState = ei->state; - - if (ei->q->needsNoResponse(status)) { - // keep state - } else if (status == GPGME_STATUS_ERROR) { - err = ei->q->parseStatusError(args); - ei->state = EditInteractor::ErrorState; - } else if (status == GPGME_STATUS_SC_OP_FAILURE) { - err = parse_sc_op_failure(args); - ei->state = EditInteractor::ErrorState; - } else { - ei->state = ei->q->nextState(status, args, err); - } - - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: %u -> nextState( %s, %s ) -> %u\n", - oldState, status_to_string(status), args ? args : "<null>", ei->state); - } - if (err || err.isCanceled()) { - ei->state = oldState; - goto error; - } - - if (ei->state != oldState && - // if there was an error from before, we stop here (### this looks weird, can this happen at all?) - ei->error.code() == GPG_ERR_NO_ERROR) { - - // successful state change -> call action - if (const char *const result = ei->q->action(err)) { - if (err) { - goto error; - } - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: action result \"%s\"\n", result); - } - // if there's a result, write it: - if (*result) { - gpgme_err_set_errno(0); - const ssize_t len = std::strlen(result); - if (writeAll(fd, result, len) != len) { - err = Error::fromSystemError(); - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asStdString().c_str()); - } - goto error; - } - } - gpgme_err_set_errno(0); - if (writeAll(fd, "\n", 1) != 1) { - err = Error::fromSystemError(); - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asStdString().c_str()); - } - goto error; - } - } else { - if (err) { - goto error; - } - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: no action result\n"); - } - } - } else { - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: no action executed\n"); - } - } - } - - error: - if (err.code() == GPG_ERR_GENERAL) { - // gpg may have asked an unknown question; try to use the default answer - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: action result \"%s\" (go with the default answer)\n", ""); - } - if (writeAll(fd, "\n", 1) != 1) { - err = Error::fromSystemError(); - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: Could not write to fd %d (%s)\n", fd, err.asStdString().c_str()); - } - } else { - err = Error(); - } - } - if (err || err.isCanceled()) { - ei->error = err; - ei->state = EditInteractor::ErrorState; - } - - if (ei->debug) { - std::fprintf(ei->debug, "EditInteractor: error now %u (%s)\n", - ei->error.encodedError(), gpgme_strerror(ei->error.encodedError())); - } - - return ei->error.encodedError(); - } -}; - -static gpgme_error_t edit_interactor_callback(void *opaque, gpgme_status_code_t status, const char *args, int fd) -{ - return CallbackHelper::edit_interactor_callback_impl(opaque, status, args, fd); -} - -const gpgme_edit_cb_t GpgME::edit_interactor_callback = ::edit_interactor_callback; - -EditInteractor::Private::Private(EditInteractor *qq) - : q(qq) -{ - const char *debug_env = std::getenv("GPGMEPP_INTERACTOR_DEBUG"); - if (!debug_env) { - return; - } - if (!strcmp(debug_env, "stdout")) { - debug = stdout; - } else if (!strcmp(debug_env, "stderr")) { - debug = stderr; - } else if (debug_env) { - debug = std::fopen(debug_env, "a+"); - debugNeedsClosing = true; - } -} - -EditInteractor::Private::~Private() -{ - if (debug && debugNeedsClosing) { - std::fclose(debug); - } -} - -EditInteractor::EditInteractor() - : d(new Private(this)) -{ - -} - -EditInteractor::~EditInteractor() -{ - delete d; -} - -unsigned int EditInteractor::state() const -{ - return d->state; -} - -Error EditInteractor::lastError() const -{ - return d->error; -} - -bool EditInteractor::needsNoResponse(unsigned int status) const -{ - switch (status) { - case GPGME_STATUS_ALREADY_SIGNED: - case GPGME_STATUS_ERROR: - case GPGME_STATUS_GET_BOOL: - case GPGME_STATUS_GET_LINE: - case GPGME_STATUS_KEY_CREATED: - case GPGME_STATUS_NEED_PASSPHRASE_SYM: - case GPGME_STATUS_SC_OP_FAILURE: - case GPGME_STATUS_CARDCTRL: - case GPGME_STATUS_BACKUP_KEY_CREATED: - return false; - default: - return true; - } -} - -// static -Error status_to_error(unsigned int status) -{ - switch (status) { - case GPGME_STATUS_MISSING_PASSPHRASE: - return Error::fromCode(GPG_ERR_NO_PASSPHRASE); - case GPGME_STATUS_ALREADY_SIGNED: - return Error::fromCode(GPG_ERR_ALREADY_SIGNED); - case GPGME_STATUS_SIGEXPIRED: - return Error::fromCode(GPG_ERR_SIG_EXPIRED); - } - return Error(); -} - -void EditInteractor::setDebugChannel(std::FILE *debug) -{ - d->debug = debug; -} - -GpgME::Error EditInteractor::parseStatusError(const char *args) -{ - Error err; - - const auto fields = split(args, ' '); - if (fields.size() >= 2) { - err = Error{static_cast<unsigned int>(std::stoul(fields[1]))}; - } else { - err = Error::fromCode(GPG_ERR_GENERAL); - } - - return err; -} - -static Error sc_op_failure_to_error(unsigned int status) -{ - switch (status) { - case 1: - // GPG_ERR_CANCELED or GPG_ERR_FULLY_CANCELED - return Error::fromCode(GPG_ERR_CANCELED); - case 2: - // GPG_ERR_BAD_PIN or GPG_ERR_BAD_RESET_CODE [sic] - return Error::fromCode(GPG_ERR_BAD_PIN); - case 3: - return Error::fromCode(GPG_ERR_PIN_BLOCKED); - case 4: - return Error::fromCode(GPG_ERR_NO_RESET_CODE); - } - return Error::fromCode(GPG_ERR_CARD); -} - -// static -Error parse_sc_op_failure(const char *args) -{ - Error err; - - const auto fields = split(args, ' '); - if (fields.size() >= 1) { - err = sc_op_failure_to_error(static_cast<unsigned int>(std::stoul(fields[0]))); - } else { - err = Error::fromCode(GPG_ERR_CARD); - } - - return err; -} - -static const char *const status_strings[] = { - "EOF", - /* mkstatus processing starts here */ - "ENTER", - "LEAVE", - "ABORT", - - "GOODSIG", - "BADSIG", - "ERRSIG", - - "BADARMOR", - - "RSA_OR_IDEA", - "KEYEXPIRED", - "KEYREVOKED", - - "TRUST_UNDEFINED", - "TRUST_NEVER", - "TRUST_MARGINAL", - "TRUST_FULLY", - "TRUST_ULTIMATE", - - "SHM_INFO", - "SHM_GET", - "SHM_GET_BOOL", - "SHM_GET_HIDDEN", - - "NEED_PASSPHRASE", - "VALIDSIG", - "SIG_ID", - "ENC_TO", - "NODATA", - "BAD_PASSPHRASE", - "NO_PUBKEY", - "NO_SECKEY", - "NEED_PASSPHRASE_SYM", - "DECRYPTION_FAILED", - "DECRYPTION_OKAY", - "MISSING_PASSPHRASE", - "GOOD_PASSPHRASE", - "GOODMDC", - "BADMDC", - "ERRMDC", - "IMPORTED", - "IMPORT_OK", - "IMPORT_PROBLEM", - "IMPORT_RES", - "FILE_START", - "FILE_DONE", - "FILE_ERROR", - - "BEGIN_DECRYPTION", - "END_DECRYPTION", - "BEGIN_ENCRYPTION", - "END_ENCRYPTION", - - "DELETE_PROBLEM", - "GET_BOOL", - "GET_LINE", - "GET_HIDDEN", - "GOT_IT", - "PROGRESS", - "SIG_CREATED", - "SESSION_KEY", - "NOTATION_NAME", - "NOTATION_DATA", - "POLICY_URL", - "BEGIN_STREAM", - "END_STREAM", - "KEY_CREATED", - "USERID_HINT", - "UNEXPECTED", - "INV_RECP", - "NO_RECP", - "ALREADY_SIGNED", - "SIGEXPIRED", - "EXPSIG", - "EXPKEYSIG", - "TRUNCATED", - "ERROR", - "NEWSIG", - "REVKEYSIG", - "SIG_SUBPACKET", - "NEED_PASSPHRASE_PIN", - "SC_OP_FAILURE", - "SC_OP_SUCCESS", - "CARDCTRL", - "BACKUP_KEY_CREATED", - "PKA_TRUST_BAD", - "PKA_TRUST_GOOD", - - "PLAINTEXT", -}; -static const unsigned int num_status_strings = sizeof status_strings / sizeof * status_strings ; - -const char *status_to_string(unsigned int idx) -{ - if (idx < num_status_strings) { - return status_strings[idx]; - } else { - return "(unknown)"; - } -} |