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Diffstat (limited to 'lang/cpp/src/data.cpp')
| -rw-r--r-- | lang/cpp/src/data.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/lang/cpp/src/data.cpp b/lang/cpp/src/data.cpp new file mode 100644 index 0000000..9527b2f --- /dev/null +++ b/lang/cpp/src/data.cpp @@ -0,0 +1,222 @@ +/* + data.cpp - wraps a gpgme data object + Copyright (C) 2003 Klarälvdalens Datakonsult AB + + 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. +*/ + +#include "data_p.h" +#include <error.h> +#include <interfaces/dataprovider.h> + +#include <gpgme.h> + +#ifndef NDEBUG +#include <iostream> +#endif + +GpgME::Data::Private::~Private() +{ + if (data) { + gpgme_data_release(data); + } +} + +const GpgME::Data::Null GpgME::Data::null; + +GpgME::Data::Data() +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new(&data); + d.reset(new Private(e ? 0 : data)); +} + +GpgME::Data::Data(const Null &) + : d(new Private(0)) +{ + +} + +GpgME::Data::Data(gpgme_data_t data) + : d(new Private(data)) +{ + +} + +GpgME::Data::Data(const char *buffer, size_t size, bool copy) +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new_from_mem(&data, buffer, size, int(copy)); + std::string sizestr = std::to_string(size); + // Ignore errors as this is optional + gpgme_data_set_flag(data, "size-hint", sizestr.c_str()); + d.reset(new Private(e ? 0 : data)); +} + +GpgME::Data::Data(const char *filename) +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new(&data); + d.reset(new Private(e ? 0 : data)); + if (!e) { + setFileName(filename); + } +} + +GpgME::Data::Data(const char *filename, off_t offset, size_t length) +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new_from_filepart(&data, filename, 0, offset, length); + d.reset(new Private(e ? 0 : data)); +} + +GpgME::Data::Data(FILE *fp) +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new_from_stream(&data, fp); + d.reset(new Private(e ? 0 : data)); +} + +GpgME::Data::Data(FILE *fp, off_t offset, size_t length) +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new_from_filepart(&data, 0, fp, offset, length); + d.reset(new Private(e ? 0 : data)); +} + +GpgME::Data::Data(int fd) +{ + gpgme_data_t data; + const gpgme_error_t e = gpgme_data_new_from_fd(&data, fd); + d.reset(new Private(e ? 0 : data)); +} + +GpgME::Data::Data(DataProvider *dp) +{ + d.reset(new Private); + if (!dp) { + return; + } + if (!dp->isSupported(DataProvider::Read)) { + d->cbs.read = 0; + } + if (!dp->isSupported(DataProvider::Write)) { + d->cbs.write = 0; + } + if (!dp->isSupported(DataProvider::Seek)) { + d->cbs.seek = 0; + } + if (!dp->isSupported(DataProvider::Release)) { + d->cbs.release = 0; + } + const gpgme_error_t e = gpgme_data_new_from_cbs(&d->data, &d->cbs, dp); + if (e) { + d->data = 0; + } + if (dp->isSupported(DataProvider::Seek)) { + off_t size = seek(0, SEEK_END); + seek(0, SEEK_SET); + std::string sizestr = std::to_string(size); + // Ignore errors as this is optional + gpgme_data_set_flag(d->data, "size-hint", sizestr.c_str()); + } +#ifndef NDEBUG + //std::cerr << "GpgME::Data(): DataProvider supports: " + // << ( d->cbs.read ? "read" : "no read" ) << ", " + // << ( d->cbs.write ? "write" : "no write" ) << ", " + // << ( d->cbs.seek ? "seek" : "no seek" ) << ", " + // << ( d->cbs.release ? "release" : "no release" ) << std::endl; +#endif +} + +bool GpgME::Data::isNull() const +{ + return !d || !d->data; +} + +GpgME::Data::Encoding GpgME::Data::encoding() const +{ + switch (gpgme_data_get_encoding(d->data)) { + case GPGME_DATA_ENCODING_NONE: return AutoEncoding; + case GPGME_DATA_ENCODING_BINARY: return BinaryEncoding; + case GPGME_DATA_ENCODING_BASE64: return Base64Encoding; + case GPGME_DATA_ENCODING_ARMOR: return ArmorEncoding; + case GPGME_DATA_ENCODING_MIME: return MimeEncoding; + } + return AutoEncoding; +} + +GpgME::Error GpgME::Data::setEncoding(Encoding enc) +{ + gpgme_data_encoding_t ge = GPGME_DATA_ENCODING_NONE; + switch (enc) { + case AutoEncoding: ge = GPGME_DATA_ENCODING_NONE; break; + case BinaryEncoding: ge = GPGME_DATA_ENCODING_BINARY; break; + case Base64Encoding: ge = GPGME_DATA_ENCODING_BASE64; break; + case ArmorEncoding: ge = GPGME_DATA_ENCODING_ARMOR; break; + case MimeEncoding: ge = GPGME_DATA_ENCODING_MIME; break; + } + return Error(gpgme_data_set_encoding(d->data, ge)); +} + +GpgME::Data::Type GpgME::Data::type() const +{ + if (isNull()) { + return Invalid; + } + switch (gpgme_data_identify(d->data, 0)) { + case GPGME_DATA_TYPE_INVALID: return Invalid; + case GPGME_DATA_TYPE_UNKNOWN: return Unknown; + case GPGME_DATA_TYPE_PGP_SIGNED: return PGPSigned; + case GPGME_DATA_TYPE_PGP_OTHER: return PGPOther; + case GPGME_DATA_TYPE_PGP_KEY: return PGPKey; + case GPGME_DATA_TYPE_CMS_SIGNED: return CMSSigned; + case GPGME_DATA_TYPE_CMS_ENCRYPTED: return CMSEncrypted; + case GPGME_DATA_TYPE_CMS_OTHER: return CMSOther; + case GPGME_DATA_TYPE_X509_CERT: return X509Cert; + case GPGME_DATA_TYPE_PKCS12: return PKCS12; + case GPGME_DATA_TYPE_PGP_ENCRYPTED: return PGPEncrypted; + case GPGME_DATA_TYPE_PGP_SIGNATURE: return PGPSignature; + } + return Invalid; +} + +char *GpgME::Data::fileName() const +{ + return gpgme_data_get_file_name(d->data); +} + +GpgME::Error GpgME::Data::setFileName(const char *name) +{ + return Error(gpgme_data_set_file_name(d->data, name)); +} + +ssize_t GpgME::Data::read(void *buffer, size_t length) +{ + return gpgme_data_read(d->data, buffer, length); +} + +ssize_t GpgME::Data::write(const void *buffer, size_t length) +{ + return gpgme_data_write(d->data, buffer, length); +} + +off_t GpgME::Data::seek(off_t offset, int whence) +{ + return gpgme_data_seek(d->data, offset, whence); +} |