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/*
gpgrevokekeyeditinteractor.cpp - Edit Interactor to revoke own OpenPGP keys
Copyright (c) 2022 g10 Code GmbH
Software engineering by Ingo Klöcker <[email protected]>
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 "gpgrevokekeyeditinteractor.h"
#include "error.h"
#include <gpgme.h>
#include <vector>
// avoid conflict (msvc)
#ifdef ERROR
# undef ERROR
#endif
using namespace GpgME;
class GpgRevokeKeyEditInteractor::Private
{
enum {
START = EditInteractor::StartState,
COMMAND,
CONFIRM_REVOKING_ENTIRE_KEY,
REASON_CODE,
REASON_TEXT,
// all these free slots belong to REASON_TEXT, too; we increase state()
// by one for each line of text, so that action() is called
REASON_TEXT_DONE = REASON_TEXT + 1000,
CONFIRM_REASON,
QUIT,
CONFIRM_SAVE,
ERROR = EditInteractor::ErrorState
};
GpgRevokeKeyEditInteractor *const q = nullptr;
public:
Private(GpgRevokeKeyEditInteractor *q)
: q{q}
, reasonCode{"0"}
{
}
const char *action(Error &err) const;
unsigned int nextState(unsigned int statusCode, const char *args, Error &err);
std::string reasonCode;
std::vector<std::string> reasonLines;
int nextLine = -1;
};
const char *GpgRevokeKeyEditInteractor::Private::action(Error &err) const
{
switch (const auto state = q->state()) {
case COMMAND:
return "revkey";
case CONFIRM_REVOKING_ENTIRE_KEY:
return "Y";
case REASON_CODE:
return reasonCode.c_str();
case REASON_TEXT_DONE:
return "";
case CONFIRM_REASON:
return "Y";
case QUIT:
return "quit";
case CONFIRM_SAVE:
return "Y";
case START:
return nullptr;
default:
if (state >= REASON_TEXT && state < REASON_TEXT_DONE) {
return reasonLines[nextLine].c_str();
}
// fall through
case ERROR:
err = Error::fromCode(GPG_ERR_GENERAL);
return nullptr;
}
}
unsigned int GpgRevokeKeyEditInteractor::Private::nextState(unsigned int status, const char *args, Error &err)
{
using std::strcmp;
static const Error GENERAL_ERROR = Error::fromCode(GPG_ERR_GENERAL);
switch (const auto state = q->state()) {
case START:
if (status == GPGME_STATUS_GET_LINE &&
strcmp(args, "keyedit.prompt") == 0) {
return COMMAND;
}
err = GENERAL_ERROR;
return ERROR;
case COMMAND:
if (status == GPGME_STATUS_GET_BOOL &&
strcmp(args, "keyedit.revoke.subkey.okay") == 0) {
return CONFIRM_REVOKING_ENTIRE_KEY;
}
err = GENERAL_ERROR;
return ERROR;
case CONFIRM_REVOKING_ENTIRE_KEY:
if (status == GPGME_STATUS_GET_LINE &&
strcmp(args, "ask_revocation_reason.code") == 0) {
return REASON_CODE;
}
err = GENERAL_ERROR;
return ERROR;
case REASON_CODE:
if (status == GPGME_STATUS_GET_LINE &&
strcmp(args, "ask_revocation_reason.text") == 0) {
nextLine++;
return static_cast<std::size_t>(nextLine) < reasonLines.size() ? REASON_TEXT : REASON_TEXT_DONE;
}
err = GENERAL_ERROR;
return ERROR;
default:
if (state >= REASON_TEXT && state < REASON_TEXT_DONE) {
if (status == GPGME_STATUS_GET_LINE &&
strcmp(args, "ask_revocation_reason.text") == 0) {
nextLine++;
return static_cast<std::size_t>(nextLine) < reasonLines.size() ? state + 1 : REASON_TEXT_DONE;
}
}
err = GENERAL_ERROR;
return ERROR;
case REASON_TEXT_DONE:
if (status == GPGME_STATUS_GET_BOOL &&
strcmp(args, "ask_revocation_reason.okay") == 0) {
return CONFIRM_REASON;
}
err = GENERAL_ERROR;
return ERROR;
case CONFIRM_REASON:
if (status == GPGME_STATUS_GET_LINE &&
strcmp(args, "keyedit.prompt") == 0) {
return QUIT;
}
err = GENERAL_ERROR;
return ERROR;
case QUIT:
if (status == GPGME_STATUS_GET_BOOL &&
strcmp(args, "keyedit.save.okay") == 0) {
return CONFIRM_SAVE;
}
err = GENERAL_ERROR;
return ERROR;
case ERROR:
if (status == GPGME_STATUS_GET_LINE &&
strcmp(args, "keyedit.prompt") == 0) {
return QUIT;
}
err = q->lastError();
return ERROR;
}
}
GpgRevokeKeyEditInteractor::GpgRevokeKeyEditInteractor()
: EditInteractor{}
, d{new Private{this}}
{
}
GpgRevokeKeyEditInteractor::~GpgRevokeKeyEditInteractor() = default;
void GpgRevokeKeyEditInteractor::setReason(RevocationReason reason, const std::vector<std::string> &description)
{
d->reasonCode = std::to_string(static_cast<int>(reason));
d->reasonLines = description;
}
const char *GpgRevokeKeyEditInteractor::action(Error &err) const
{
return d->action(err);
}
unsigned int GpgRevokeKeyEditInteractor::nextState(unsigned int status, const char *args, Error &err) const
{
return d->nextState(status, args, err);
}
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