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-rw-r--r--src/charon/encoding/generator.c888
1 files changed, 0 insertions, 888 deletions
diff --git a/src/charon/encoding/generator.c b/src/charon/encoding/generator.c
deleted file mode 100644
index 6485da492..000000000
--- a/src/charon/encoding/generator.c
+++ /dev/null
@@ -1,888 +0,0 @@
-/*
- * Copyright (C) 2005-2009 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * 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 <stdlib.h>
-#include <string.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-
-#include "generator.h"
-
-#include <library.h>
-#include <daemon.h>
-#include <utils/linked_list.h>
-#include <encoding/payloads/payload.h>
-#include <encoding/payloads/proposal_substructure.h>
-#include <encoding/payloads/transform_substructure.h>
-#include <encoding/payloads/sa_payload.h>
-#include <encoding/payloads/ke_payload.h>
-#include <encoding/payloads/notify_payload.h>
-#include <encoding/payloads/nonce_payload.h>
-#include <encoding/payloads/id_payload.h>
-#include <encoding/payloads/auth_payload.h>
-#include <encoding/payloads/cert_payload.h>
-#include <encoding/payloads/certreq_payload.h>
-#include <encoding/payloads/ts_payload.h>
-#include <encoding/payloads/delete_payload.h>
-#include <encoding/payloads/vendor_id_payload.h>
-#include <encoding/payloads/cp_payload.h>
-#include <encoding/payloads/configuration_attribute.h>
-#include <encoding/payloads/eap_payload.h>
-
-
-typedef struct private_generator_t private_generator_t;
-
-/**
- * Private part of a generator_t object.
- */
-struct private_generator_t {
- /**
- * Public part of a generator_t object.
- */
- generator_t public;
-
- /**
- * Buffer used to generate the data into.
- */
- u_int8_t *buffer;
-
- /**
- * Current write position in buffer (one byte aligned).
- */
- u_int8_t *out_position;
-
- /**
- * Position of last byte in buffer.
- */
- u_int8_t *roof_position;
-
- /**
- * Current bit writing to in current byte (between 0 and 7).
- */
- u_int8_t current_bit;
-
- /**
- * Associated data struct to read informations from.
- */
- void *data_struct;
-
- /*
- * Last payload length position offset in the buffer.
- */
- u_int32_t last_payload_length_position_offset;
-
- /**
- * Offset of the header length field in the buffer.
- */
- u_int32_t header_length_position_offset;
-
- /**
- * Last SPI size.
- */
- u_int8_t last_spi_size;
-
- /**
- * Attribute format of the last generated transform attribute.
- *
- * Used to check if a variable value field is used or not for
- * the transform attribute value.
- */
- bool attribute_format;
-
- /**
- * Depending on the value of attribute_format this field is used
- * to hold the length of the transform attribute in bytes.
- */
- u_int16_t attribute_length;
-};
-
-/**
- * Get size of current buffer in bytes.
- */
-static int get_size(private_generator_t *this)
-{
- return this->roof_position - this->buffer;
-}
-
-/**
- * Get free space of current buffer in bytes.
- */
-static int get_space(private_generator_t *this)
-{
- return this->roof_position - this->out_position;
-}
-
-/**
- * Get length of data in buffer (in bytes).
- */
-static int get_length(private_generator_t *this)
-{
- return this->out_position - this->buffer;
-}
-
-/**
- * Get current offset in buffer (in bytes).
- */
-static u_int32_t get_offset(private_generator_t *this)
-{
- return this->out_position - this->buffer;
-}
-
-/**
- * Makes sure enough space is available in buffer to store amount of bits.
- */
-static void make_space_available(private_generator_t *this, int bits)
-{
- while ((get_space(this) * 8 - this->current_bit) < bits)
- {
- int old_buffer_size, new_buffer_size, out_position_offset;
-
- old_buffer_size = get_size(this);
- new_buffer_size = old_buffer_size + GENERATOR_DATA_BUFFER_INCREASE_VALUE;
- out_position_offset = this->out_position - this->buffer;
-
- DBG2(DBG_ENC, "increasing gen buffer from %d to %d byte",
- old_buffer_size, new_buffer_size);
-
- this->buffer = realloc(this->buffer,new_buffer_size);
- this->out_position = (this->buffer + out_position_offset);
- this->roof_position = (this->buffer + new_buffer_size);
- }
-}
-
-/**
- * Writes a specific amount of byte into the buffer.
- */
-static void write_bytes_to_buffer(private_generator_t *this, void *bytes,
- int number_of_bytes)
-{
- int i;
- u_int8_t *read_position = (u_int8_t *)bytes;
-
- make_space_available(this, number_of_bytes * 8);
-
- for (i = 0; i < number_of_bytes; i++)
- {
- *(this->out_position) = *(read_position);
- read_position++;
- this->out_position++;
- }
-}
-
-/**
- * Writes a specific amount of byte into the buffer at a specific offset.
- */
-static void write_bytes_to_buffer_at_offset(private_generator_t *this,
- void *bytes, int number_of_bytes, u_int32_t offset)
-{
- int i;
- u_int8_t *read_position = (u_int8_t *)bytes;
- u_int8_t *write_position;
- u_int32_t free_space_after_offset = get_size(this) - offset;
-
- /* check first if enough space for new data is available */
- if (number_of_bytes > free_space_after_offset)
- {
- make_space_available(this,
- (number_of_bytes - free_space_after_offset) * 8);
- }
-
- write_position = this->buffer + offset;
- for (i = 0; i < number_of_bytes; i++)
- {
- *write_position = *read_position;
- read_position++;
- write_position++;
- }
-}
-
-/**
- * Generates a U_INT-Field type and writes it to buffer.
- */
-static void generate_u_int_type(private_generator_t *this,
- encoding_type_t int_type,u_int32_t offset)
-{
- int number_of_bits = 0;
-
- /* find out number of bits of each U_INT type to check for enough space */
- switch (int_type)
- {
- case U_INT_4:
- number_of_bits = 4;
- break;
- case TS_TYPE:
- case U_INT_8:
- number_of_bits = 8;
- break;
- case U_INT_16:
- case CONFIGURATION_ATTRIBUTE_LENGTH:
- number_of_bits = 16;
- break;
- case U_INT_32:
- number_of_bits = 32;
- break;
- case ATTRIBUTE_TYPE:
- number_of_bits = 15;
- break;
- case IKE_SPI:
- number_of_bits = 64;
- break;
- default:
- DBG1(DBG_ENC, "U_INT Type %N is not supported",
- encoding_type_names, int_type);
- return;
- }
- if ((number_of_bits % 8) == 0 && this->current_bit != 0)
- {
- DBG1(DBG_ENC, "U_INT Type %N is not 8 Bit aligned",
- encoding_type_names, int_type);
- return;
- }
-
- make_space_available(this, number_of_bits);
- switch (int_type)
- {
- case U_INT_4:
- {
- u_int8_t high, low;
-
- if (this->current_bit == 0)
- {
- /* high of current byte in buffer has to be set to the new value*/
- high = *((u_int8_t *)(this->data_struct + offset)) << 4;
- /* low in buffer is not changed */
- low = *(this->out_position) & 0x0F;
- /* high is set, low_val is not changed */
- *(this->out_position) = high | low;
- DBG3(DBG_ENC, " => %d", *(this->out_position));
- /* write position is not changed, just bit position is moved */
- this->current_bit = 4;
- }
- else if (this->current_bit == 4)
- {
- /* high in buffer is not changed */
- high = *(this->out_position) & 0xF0;
- /* low of current byte in buffer has to be set to the new value*/
- low = *((u_int8_t *)(this->data_struct + offset)) & 0x0F;
- *(this->out_position) = high | low;
- DBG3(DBG_ENC, " => %d", *(this->out_position));
- this->out_position++;
- this->current_bit = 0;
- }
- else
- {
- DBG1(DBG_ENC, "U_INT_4 Type is not 4 Bit aligned");
- /* 4 Bit integers must have a 4 bit alignment */
- return;
- }
- break;
- }
- case TS_TYPE:
- case U_INT_8:
- {
- /* 8 bit values are written as they are */
- *this->out_position = *((u_int8_t *)(this->data_struct + offset));
- DBG3(DBG_ENC, " => %d", *(this->out_position));
- this->out_position++;
- break;
- }
- case ATTRIBUTE_TYPE:
- {
- u_int8_t attribute_format_flag;
- u_int16_t val;
-
- /* attribute type must not change first bit of current byte */
- if (this->current_bit != 1)
- {
- DBG1(DBG_ENC, "ATTRIBUTE FORMAT flag is not set");
- return;
- }
- attribute_format_flag = *(this->out_position) & 0x80;
- /* get attribute type value as 16 bit integer*/
- val = *((u_int16_t*)(this->data_struct + offset));
- /* unset most significant bit */
- val &= 0x7FFF;
- if (attribute_format_flag)
- {
- val |= 0x8000;
- }
- val = htons(val);
- DBG3(DBG_ENC, " => %d", val);
- /* write bytes to buffer (set bit is overwritten) */
- write_bytes_to_buffer(this, &val, sizeof(u_int16_t));
- this->current_bit = 0;
- break;
-
- }
- case U_INT_16:
- case CONFIGURATION_ATTRIBUTE_LENGTH:
- {
- u_int16_t val = htons(*((u_int16_t*)(this->data_struct + offset)));
- DBG3(DBG_ENC, " => %b", &val, sizeof(u_int16_t));
- write_bytes_to_buffer(this, &val, sizeof(u_int16_t));
- break;
- }
- case U_INT_32:
- {
- u_int32_t val = htonl(*((u_int32_t*)(this->data_struct + offset)));
- DBG3(DBG_ENC, " => %b", &val, sizeof(u_int32_t));
- write_bytes_to_buffer(this, &val, sizeof(u_int32_t));
- break;
- }
- case IKE_SPI:
- {
- /* 64 bit are written as-is, no host order conversion */
- write_bytes_to_buffer(this, this->data_struct + offset,
- sizeof(u_int64_t));
- DBG3(DBG_ENC, " => %b", this->data_struct + offset,
- sizeof(u_int64_t));
- break;
- }
- default:
- {
- DBG1(DBG_ENC, "U_INT Type %N is not supported",
- encoding_type_names, int_type);
- return;
- }
- }
-}
-
-/**
- * Generate a reserved bit or byte
- */
-static void generate_reserved_field(private_generator_t *this, int bits)
-{
- /* only one bit or 8 bit fields are supported */
- if (bits != 1 && bits != 8)
- {
- DBG1(DBG_ENC, "reserved field of %d bits cannot be generated", bits);
- return ;
- }
- make_space_available(this, bits);
-
- if (bits == 1)
- {
- u_int8_t reserved_bit = ~(1 << (7 - this->current_bit));
-
- *(this->out_position) = *(this->out_position) & reserved_bit;
- if (this->current_bit == 0)
- {
- /* memory must be zero */
- *(this->out_position) = 0x00;
- }
- this->current_bit++;
- if (this->current_bit >= 8)
- {
- this->current_bit = this->current_bit % 8;
- this->out_position++;
- }
- }
- else
- {
- if (this->current_bit > 0)
- {
- DBG1(DBG_ENC, "reserved field cannot be written cause "
- "alignement of current bit is %d", this->current_bit);
- return;
- }
- *(this->out_position) = 0x00;
- this->out_position++;
- }
-}
-
-/**
- * Generate a FLAG filed
- */
-static void generate_flag(private_generator_t *this, u_int32_t offset)
-{
- u_int8_t flag_value;
- u_int8_t flag;
-
- flag_value = (*((bool *) (this->data_struct + offset))) ? 1 : 0;
- /* get flag position */
- flag = (flag_value << (7 - this->current_bit));
-
- /* make sure one bit is available in buffer */
- make_space_available(this, 1);
- if (this->current_bit == 0)
- {
- /* memory must be zero */
- *(this->out_position) = 0x00;
- }
-
- *(this->out_position) = *(this->out_position) | flag;
- DBG3(DBG_ENC, " => %d", *this->out_position);
-
- this->current_bit++;
- if (this->current_bit >= 8)
- {
- this->current_bit = this->current_bit % 8;
- this->out_position++;
- }
-}
-
-/**
- * Generates a bytestream from a chunk_t.
- */
-static void generate_from_chunk(private_generator_t *this, u_int32_t offset)
-{
- chunk_t *value;
-
- if (this->current_bit != 0)
- {
- DBG1(DBG_ENC, "can not generate a chunk at Bitpos %d", this->current_bit);
- return ;
- }
-
- value = (chunk_t *)(this->data_struct + offset);
- DBG3(DBG_ENC, " => %B", value);
-
- write_bytes_to_buffer(this, value->ptr, value->len);
-}
-
-/**
- * Implementation of private_generator_t.write_to_chunk.
- */
-static void write_to_chunk(private_generator_t *this,chunk_t *data)
-{
- int data_length = get_length(this);
- u_int32_t header_length_field = data_length;
-
- /* write length into header length field */
- if (this->header_length_position_offset > 0)
- {
- u_int32_t val = htonl(header_length_field);
- write_bytes_to_buffer_at_offset(this, &val, sizeof(u_int32_t),
- this->header_length_position_offset);
- }
-
- if (this->current_bit > 0)
- {
- data_length++;
- }
- *data = chunk_alloc(data_length);
- memcpy(data->ptr, this->buffer, data_length);
-
- DBG3(DBG_ENC, "generated data of this generator %B", data);
-}
-
-/**
- * Implementation of private_generator_t.generate_payload.
- */
-static void generate_payload (private_generator_t *this,payload_t *payload)
-{
- int i, offset_start;
- size_t rule_count;
- encoding_rule_t *rules;
- payload_type_t payload_type;
-
- this->data_struct = payload;
- payload_type = payload->get_type(payload);
- /* spi size has to get reseted */
- this->last_spi_size = 0;
-
- offset_start = this->out_position - this->buffer;
-
- DBG2(DBG_ENC, "generating payload of type %N",
- payload_type_names, payload_type);
-
- /* each payload has its own encoding rules */
- payload->get_encoding_rules(payload, &rules, &rule_count);
-
- for (i = 0; i < rule_count;i++)
- {
- DBG2(DBG_ENC, " generating rule %d %N",
- i, encoding_type_names, rules[i].type);
- switch (rules[i].type)
- {
- case U_INT_4:
- case U_INT_8:
- case U_INT_16:
- case U_INT_32:
- case IKE_SPI:
- case TS_TYPE:
- case ATTRIBUTE_TYPE:
- case CONFIGURATION_ATTRIBUTE_LENGTH:
- {
- generate_u_int_type(this, rules[i].type, rules[i].offset);
- break;
- }
- case RESERVED_BIT:
- {
- generate_reserved_field(this, 1);
- break;
- }
- case RESERVED_BYTE:
- {
- generate_reserved_field(this, 8);
- break;
- }
- case FLAG:
- {
- generate_flag(this, rules[i].offset);
- break;
- }
- case PAYLOAD_LENGTH:
- {
- this->last_payload_length_position_offset = get_offset(this);
- generate_u_int_type(this, U_INT_16,rules[i].offset);
- break;
- }
- case HEADER_LENGTH:
- {
- this->header_length_position_offset = get_offset(this);
- generate_u_int_type(this ,U_INT_32, rules[i].offset);
- break;
- }
- case SPI_SIZE:
- generate_u_int_type(this, U_INT_8, rules[i].offset);
- this->last_spi_size = *((u_int8_t *)(this->data_struct +
- rules[i].offset));
- break;
- case ADDRESS:
- {
- generate_from_chunk(this, rules[i].offset);
- break;
- }
- case SPI:
- {
- generate_from_chunk(this, rules[i].offset);
- break;
- }
- case KEY_EXCHANGE_DATA:
- case NOTIFICATION_DATA:
- case NONCE_DATA:
- case ID_DATA:
- case AUTH_DATA:
- case CERT_DATA:
- case CERTREQ_DATA:
- case SPIS:
- case CONFIGURATION_ATTRIBUTE_VALUE:
- case VID_DATA:
- case EAP_DATA:
- {
- u_int32_t payload_length_position_offset;
- u_int16_t length_of_payload;
- u_int16_t header_length = 0;
- u_int16_t length_in_network_order;
-
- switch(rules[i].type)
- {
- case KEY_EXCHANGE_DATA:
- header_length = KE_PAYLOAD_HEADER_LENGTH;
- break;
- case NOTIFICATION_DATA:
- header_length = NOTIFY_PAYLOAD_HEADER_LENGTH +
- this->last_spi_size;
- break;
- case NONCE_DATA:
- header_length = NONCE_PAYLOAD_HEADER_LENGTH;
- break;
- case ID_DATA:
- header_length = ID_PAYLOAD_HEADER_LENGTH;
- break;
- case AUTH_DATA:
- header_length = AUTH_PAYLOAD_HEADER_LENGTH;
- break;
- case CERT_DATA:
- header_length = CERT_PAYLOAD_HEADER_LENGTH;
- break;
- case CERTREQ_DATA:
- header_length = CERTREQ_PAYLOAD_HEADER_LENGTH;
- break;
- case SPIS:
- header_length = DELETE_PAYLOAD_HEADER_LENGTH;
- break;
- case VID_DATA:
- header_length = VENDOR_ID_PAYLOAD_HEADER_LENGTH;
- break;
- case CONFIGURATION_ATTRIBUTE_VALUE:
- header_length = CONFIGURATION_ATTRIBUTE_HEADER_LENGTH;
- break;
- case EAP_DATA:
- header_length = EAP_PAYLOAD_HEADER_LENGTH;
- break;
- default:
- break;
- }
- generate_from_chunk(this, rules[i].offset);
-
- payload_length_position_offset =
- this->last_payload_length_position_offset;
-
- length_of_payload = header_length +
- ((chunk_t *)(this->data_struct + rules[i].offset))->len;
-
- length_in_network_order = htons(length_of_payload);
- write_bytes_to_buffer_at_offset(this, &length_in_network_order,
- sizeof(u_int16_t), payload_length_position_offset);
- break;
- }
- case PROPOSALS:
- {
- u_int32_t payload_length_position_offset =
- this->last_payload_length_position_offset;
- /* Length of SA_PAYLOAD is calculated */
- u_int16_t length_of_sa_payload = SA_PAYLOAD_HEADER_LENGTH;
- u_int16_t int16_val;
- linked_list_t *proposals = *((linked_list_t **)
- (this->data_struct + rules[i].offset));
- iterator_t *iterator;
- payload_t *current_proposal;
-
- iterator = proposals->create_iterator(proposals,TRUE);
- while (iterator->iterate(iterator, (void**)&current_proposal))
- {
- u_int32_t before_generate_position_offset;
- u_int32_t after_generate_position_offset;
-
- before_generate_position_offset = get_offset(this);
- generate_payload(this, current_proposal);
- after_generate_position_offset = get_offset(this);
- length_of_sa_payload += (after_generate_position_offset -
- before_generate_position_offset);
- }
- iterator->destroy(iterator);
-
- int16_val = htons(length_of_sa_payload);
- write_bytes_to_buffer_at_offset(this, &int16_val,
- sizeof(u_int16_t),payload_length_position_offset);
- break;
- }
- case TRANSFORMS:
- {
- u_int32_t payload_length_position_offset =
- this->last_payload_length_position_offset;
- u_int16_t length_of_proposal =
- PROPOSAL_SUBSTRUCTURE_HEADER_LENGTH + this->last_spi_size;
- u_int16_t int16_val;
- linked_list_t *transforms = *((linked_list_t **)
- (this->data_struct + rules[i].offset));
- iterator_t *iterator;
- payload_t *current_transform;
-
- iterator = transforms->create_iterator(transforms,TRUE);
- while (iterator->iterate(iterator, (void**)&current_transform))
- {
- u_int32_t before_generate_position_offset;
- u_int32_t after_generate_position_offset;
-
- before_generate_position_offset = get_offset(this);
- generate_payload(this, current_transform);
- after_generate_position_offset = get_offset(this);
-
- length_of_proposal += (after_generate_position_offset -
- before_generate_position_offset);
- }
- iterator->destroy(iterator);
-
- int16_val = htons(length_of_proposal);
- write_bytes_to_buffer_at_offset(this, &int16_val,
- sizeof(u_int16_t), payload_length_position_offset);
- break;
- }
- case TRANSFORM_ATTRIBUTES:
- {
- u_int32_t transform_length_position_offset =
- this->last_payload_length_position_offset;
- u_int16_t length_of_transform =
- TRANSFORM_SUBSTRUCTURE_HEADER_LENGTH;
- u_int16_t int16_val;
- linked_list_t *transform_attributes =*((linked_list_t **)
- (this->data_struct + rules[i].offset));
- iterator_t *iterator;
- payload_t *current_attribute;
-
- iterator = transform_attributes->create_iterator(
- transform_attributes, TRUE);
- while (iterator->iterate(iterator, (void**)&current_attribute))
- {
- u_int32_t before_generate_position_offset;
- u_int32_t after_generate_position_offset;
-
- before_generate_position_offset = get_offset(this);
- generate_payload(this, current_attribute);
- after_generate_position_offset = get_offset(this);
-
- length_of_transform += (after_generate_position_offset -
- before_generate_position_offset);
- }
-
- iterator->destroy(iterator);
-
- int16_val = htons(length_of_transform);
- write_bytes_to_buffer_at_offset(this, &int16_val,
- sizeof(u_int16_t),transform_length_position_offset);
- break;
- }
- case CONFIGURATION_ATTRIBUTES:
- {
- u_int32_t configurations_length_position_offset =
- this->last_payload_length_position_offset;
- u_int16_t length_of_configurations = CP_PAYLOAD_HEADER_LENGTH;
- u_int16_t int16_val;
- linked_list_t *configuration_attributes = *((linked_list_t **)
- (this->data_struct + rules[i].offset));
- iterator_t *iterator;
- payload_t *current_attribute;
-
- iterator = configuration_attributes->create_iterator(
- configuration_attributes,TRUE);
- while (iterator->iterate(iterator, (void**)&current_attribute))
- {
- u_int32_t before_generate_position_offset;
- u_int32_t after_generate_position_offset;
-
- before_generate_position_offset = get_offset(this);
- generate_payload(this, current_attribute);
- after_generate_position_offset = get_offset(this);
-
- length_of_configurations += after_generate_position_offset -
- before_generate_position_offset;
- }
-
- iterator->destroy(iterator);
-
- int16_val = htons(length_of_configurations);
- write_bytes_to_buffer_at_offset(this, &int16_val,
- sizeof(u_int16_t),configurations_length_position_offset);
- break;
- }
- case ATTRIBUTE_FORMAT:
- {
- generate_flag(this, rules[i].offset);
- /* Attribute format is a flag which is stored in context*/
- this->attribute_format =
- *((bool *)(this->data_struct + rules[i].offset));
- break;
- }
-
- case ATTRIBUTE_LENGTH_OR_VALUE:
- {
- if (this->attribute_format == FALSE)
- {
- generate_u_int_type(this, U_INT_16, rules[i].offset);
- /* this field hold the length of the attribute */
- this->attribute_length =
- *((u_int16_t *)(this->data_struct + rules[i].offset));
- }
- else
- {
- generate_u_int_type(this, U_INT_16, rules[i].offset);
- }
- break;
- }
- case ATTRIBUTE_VALUE:
- {
- if (this->attribute_format == FALSE)
- {
- DBG2(DBG_ENC, "attribute value has not fixed size");
- /* the attribute value is generated */
- generate_from_chunk(this, rules[i].offset);
- }
- break;
- }
- case TRAFFIC_SELECTORS:
- {
- u_int32_t payload_length_position_offset =
- this->last_payload_length_position_offset;
- u_int16_t length_of_ts_payload = TS_PAYLOAD_HEADER_LENGTH;
- u_int16_t int16_val;
- linked_list_t *traffic_selectors = *((linked_list_t **)
- (this->data_struct + rules[i].offset));
- iterator_t *iterator;
- payload_t *current_tss;
-
- iterator = traffic_selectors->create_iterator(
- traffic_selectors,TRUE);
- while (iterator->iterate(iterator, (void **)&current_tss))
- {
- u_int32_t before_generate_position_offset;
- u_int32_t after_generate_position_offset;
-
- before_generate_position_offset = get_offset(this);
- generate_payload(this, current_tss);
- after_generate_position_offset = get_offset(this);
-
- length_of_ts_payload += (after_generate_position_offset -
- before_generate_position_offset);
- }
- iterator->destroy(iterator);
-
- int16_val = htons(length_of_ts_payload);
- write_bytes_to_buffer_at_offset(this, &int16_val,
- sizeof(u_int16_t),payload_length_position_offset);
- break;
- }
-
- case ENCRYPTED_DATA:
- {
- generate_from_chunk(this, rules[i].offset);
- break;
- }
- default:
- DBG1(DBG_ENC, "field type %N is not supported",
- encoding_type_names, rules[i].type);
- return;
- }
- }
- DBG2(DBG_ENC, "generating %N payload finished",
- payload_type_names, payload_type);
- DBG3(DBG_ENC, "generated data for this payload %b",
- this->buffer + offset_start,
- this->out_position - this->buffer - offset_start);
-}
-
-/**
- * Implementation of generator_t.destroy.
- */
-static status_t destroy(private_generator_t *this)
-{
- free(this->buffer);
- free(this);
- return SUCCESS;
-}
-
-/*
- * Described in header
- */
-generator_t *generator_create()
-{
- private_generator_t *this;
-
- this = malloc_thing(private_generator_t);
-
- /* initiate public functions */
- this->public.generate_payload = (void(*)(generator_t*, payload_t *))generate_payload;
- this->public.destroy = (void(*)(generator_t*)) destroy;
- this->public.write_to_chunk = (void (*) (generator_t *,chunk_t *))write_to_chunk;
-
- /* allocate memory for buffer */
- this->buffer = malloc(GENERATOR_DATA_BUFFER_SIZE);
-
- /* initiate private variables */
- this->out_position = this->buffer;
- this->roof_position = this->buffer + GENERATOR_DATA_BUFFER_SIZE;
- this->data_struct = NULL;
- this->current_bit = 0;
- this->last_payload_length_position_offset = 0;
- this->header_length_position_offset = 0;
- this->attribute_format = FALSE;
- this->attribute_length = 0;
-
- return &(this->public);
-}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-13 08:44:20 +0000