diff options
Diffstat (limited to 'src/libimcv/pwg/pwg_attr_vendor_smi_code.c')
| -rw-r--r-- | src/libimcv/pwg/pwg_attr_vendor_smi_code.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/libimcv/pwg/pwg_attr_vendor_smi_code.c b/src/libimcv/pwg/pwg_attr_vendor_smi_code.c new file mode 100644 index 000000000..7931259aa --- /dev/null +++ b/src/libimcv/pwg/pwg_attr_vendor_smi_code.c @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2015 Andreas Steffen + * HSR Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program 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 General Public License + * for more details. + */ + +#include "pwg_attr_vendor_smi_code.h" + +#include <pa_tnc/pa_tnc_msg.h> +#include <bio/bio_writer.h> +#include <bio/bio_reader.h> +#include <utils/debug.h> + +typedef struct private_pwg_attr_vendor_smi_code_t private_pwg_attr_vendor_smi_code_t; + +/** + * PWG HCD PA-TNC Vendor SMI Code + * + * 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Reserved | Vendor SMI Code | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +#define VENDOR_SMI_CODE_SIZE 4 + +/** + * Private data of an pwg_attr_vendor_smi_code_t object. + */ +struct private_pwg_attr_vendor_smi_code_t { + + /** + * Public members of pwg_attr_vendor_smi_code_t + */ + pwg_attr_vendor_smi_code_t public; + + /** + * Vendor-specific attribute type + */ + pen_type_t type; + + /** + * Length of attribute value + */ + size_t length; + + /** + * Attribute value or segment + */ + chunk_t value; + + /** + * Noskip flag + */ + bool noskip_flag; + + /** + * Vendor SMI code + */ + pen_t vendor_smi_code; + + /** + * Reference count + */ + refcount_t ref; +}; + +METHOD(pa_tnc_attr_t, get_type, pen_type_t, + private_pwg_attr_vendor_smi_code_t *this) +{ + return this->type; +} + +METHOD(pa_tnc_attr_t, get_value, chunk_t, + private_pwg_attr_vendor_smi_code_t *this) +{ + return this->value; +} + +METHOD(pa_tnc_attr_t, get_noskip_flag, bool, + private_pwg_attr_vendor_smi_code_t *this) +{ + return this->noskip_flag; +} + +METHOD(pa_tnc_attr_t, set_noskip_flag,void, + private_pwg_attr_vendor_smi_code_t *this, bool noskip) +{ + this->noskip_flag = noskip; +} + +METHOD(pa_tnc_attr_t, build, void, + private_pwg_attr_vendor_smi_code_t *this) +{ + bio_writer_t *writer; + + if (this->value.ptr) + { + return; + } + writer = bio_writer_create(VENDOR_SMI_CODE_SIZE); + writer->write_uint32(writer, this->vendor_smi_code); + + this->value = writer->extract_buf(writer); + this->length = this->value.len; + writer->destroy(writer); +} + +METHOD(pa_tnc_attr_t, process, status_t, + private_pwg_attr_vendor_smi_code_t *this, u_int32_t *offset) +{ + bio_reader_t *reader; + uint32_t vendor_smi_code; + uint8_t reserved; + + *offset = 0; + + if (this->value.len < this->length) + { + return NEED_MORE; + } + if (this->value.len != VENDOR_SMI_CODE_SIZE) + { + DBG1(DBG_TNC, "incorrect attribute length for PWG HCD Vendor SMI Code"); + return FAILED; + } + reader = bio_reader_create(this->value); + reader->read_uint8 (reader, &reserved); + reader->read_uint24(reader, &vendor_smi_code); + reader->destroy(reader); + this->vendor_smi_code = vendor_smi_code; + + return SUCCESS; +} + +METHOD(pa_tnc_attr_t, add_segment, void, + private_pwg_attr_vendor_smi_code_t *this, chunk_t segment) +{ + this->value = chunk_cat("mc", this->value, segment); +} + +METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*, + private_pwg_attr_vendor_smi_code_t *this) +{ + ref_get(&this->ref); + return &this->public.pa_tnc_attribute; +} + +METHOD(pa_tnc_attr_t, destroy, void, + private_pwg_attr_vendor_smi_code_t *this) +{ + if (ref_put(&this->ref)) + { + free(this->value.ptr); + free(this); + } +} + +METHOD(pwg_attr_vendor_smi_code_t, get_vendor_smi_code, pen_t, + private_pwg_attr_vendor_smi_code_t *this) +{ + return this->vendor_smi_code; +} + +/** + * Described in header. + */ +pa_tnc_attr_t *pwg_attr_vendor_smi_code_create(pen_t vendor_smi_code) +{ + private_pwg_attr_vendor_smi_code_t *this; + + INIT(this, + .public = { + .pa_tnc_attribute = { + .get_type = _get_type, + .get_value = _get_value, + .get_noskip_flag = _get_noskip_flag, + .set_noskip_flag = _set_noskip_flag, + .build = _build, + .process = _process, + .add_segment = _add_segment, + .get_ref = _get_ref, + .destroy = _destroy, + }, + .get_vendor_smi_code = _get_vendor_smi_code, + }, + .type = { PEN_PWG, PWG_HCD_VENDOR_SMI_CODE }, + .vendor_smi_code = vendor_smi_code, + .ref = 1, + ); + + return &this->public.pa_tnc_attribute; +} + +/** + * Described in header. + */ +pa_tnc_attr_t *pwg_attr_vendor_smi_code_create_from_data(size_t length, + chunk_t data) +{ + private_pwg_attr_vendor_smi_code_t *this; + + INIT(this, + .public = { + .pa_tnc_attribute = { + .get_type = _get_type, + .get_value = _get_value, + .get_noskip_flag = _get_noskip_flag, + .set_noskip_flag = _set_noskip_flag, + .build = _build, + .process = _process, + .add_segment = _add_segment, + .get_ref = _get_ref, + .destroy = _destroy, + }, + .get_vendor_smi_code = _get_vendor_smi_code, + }, + .type = { PEN_PWG, PWG_HCD_VENDOR_SMI_CODE }, + .length = length, + .value = chunk_clone(data), + .ref = 1, + ); + + return &this->public.pa_tnc_attribute; +} + |