/* * Copyright (C) 2012-2014 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 . * * 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. */ #define _GNU_SOURCE /* for stdndup() */ #include #include "ita_attr.h" #include "ita_attr_get_settings.h" #include #include #include #include #include typedef struct private_ita_attr_get_settings_t private_ita_attr_get_settings_t; /** * ITA Get Settings * * 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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Settings Count | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Name Length | Name (Variable Length) ~ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * ~ Name (Variable Length) ~ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Name Length | Name (Variable Length) ~ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * ~ Name (Variable Length) ~ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * ........................... */ #define ITA_GET_SETTINGS_MIN_SIZE 4 /** * Private data of an ita_attr_get_settings_t object. */ struct private_ita_attr_get_settings_t { /** * Public members of ita_attr_get_settings_t */ ita_attr_get_settings_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; /** * List of requested settings */ linked_list_t *list; /** * Reference count */ refcount_t ref; }; METHOD(pa_tnc_attr_t, get_type, pen_type_t, private_ita_attr_get_settings_t *this) { return this->type; } METHOD(pa_tnc_attr_t, get_value, chunk_t, private_ita_attr_get_settings_t *this) { return this->value; } METHOD(pa_tnc_attr_t, get_noskip_flag, bool, private_ita_attr_get_settings_t *this) { return this->noskip_flag; } METHOD(pa_tnc_attr_t, set_noskip_flag,void, private_ita_attr_get_settings_t *this, bool noskip) { this->noskip_flag = noskip; } METHOD(pa_tnc_attr_t, build, void, private_ita_attr_get_settings_t *this) { bio_writer_t *writer; enumerator_t *enumerator; char *name; if (this->value.ptr) { return; } writer = bio_writer_create(ITA_GET_SETTINGS_MIN_SIZE); writer->write_uint32(writer, this->list->get_count(this->list)); enumerator = this->list->create_enumerator(this->list); while (enumerator->enumerate(enumerator, &name)) { writer->write_data16(writer, chunk_create(name, strlen(name))); } enumerator->destroy(enumerator); this->value = writer->extract_buf(writer); this->length = this->value.len; writer->destroy(writer); } METHOD(pa_tnc_attr_t, process, status_t, private_ita_attr_get_settings_t *this, uint32_t *offset) { bio_reader_t *reader; uint32_t count; chunk_t name; status_t status = FAILED; *offset = 0; if (this->value.len < this->length) { return NEED_MORE; } if (this->value.len < ITA_GET_SETTINGS_MIN_SIZE) { DBG1(DBG_TNC, "insufficient data for ITA Get Settings attribute"); return FAILED; } reader = bio_reader_create(this->value); reader->read_uint32(reader, &count); *offset = ITA_GET_SETTINGS_MIN_SIZE; while (count--) { if (!reader->read_data16(reader, &name)) { DBG1(DBG_TNC, "insufficient data for setting name"); goto end; } *offset += 2 + name.len; this->list->insert_last(this->list, strndup(name.ptr, name.len)); } status = SUCCESS; end: reader->destroy(reader); return status; } METHOD(pa_tnc_attr_t, add_segment, void, private_ita_attr_get_settings_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_ita_attr_get_settings_t *this) { ref_get(&this->ref); return &this->public.pa_tnc_attribute; } METHOD(pa_tnc_attr_t, destroy, void, private_ita_attr_get_settings_t *this) { if (ref_put(&this->ref)) { this->list->destroy_function(this->list, free); free(this->value.ptr); free(this); } } METHOD(ita_attr_get_settings_t, add, void, private_ita_attr_get_settings_t *this, char *name) { this->list->insert_last(this->list, strdup(name)); } METHOD(ita_attr_get_settings_t, create_enumerator, enumerator_t*, private_ita_attr_get_settings_t *this) { return this->list->create_enumerator(this->list); } /** * Described in header. */ pa_tnc_attr_t *ita_attr_get_settings_create(char *name) { private_ita_attr_get_settings_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, }, .add = _add, .create_enumerator = _create_enumerator, }, .type = { PEN_ITA, ITA_ATTR_GET_SETTINGS }, .list = linked_list_create(), .ref = 1, ); if (name) { add(this, name); } return &this->public.pa_tnc_attribute; } /** * Described in header. */ pa_tnc_attr_t *ita_attr_get_settings_create_from_data(size_t length, chunk_t data) { private_ita_attr_get_settings_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, }, .add = _add, .create_enumerator = _create_enumerator, }, .type = { PEN_ITA, ITA_ATTR_GET_SETTINGS }, .length = length, .value = chunk_clone(data), .list = linked_list_create(), .ref = 1, ); return &this->public.pa_tnc_attribute; }