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- added support for encoding type IKE_SPI

This commit is contained in:
Jan Hutter 2005-11-22 15:40:56 +00:00
parent 2c0c865a9e
commit 213790354f
1 changed files with 51 additions and 0 deletions
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51
Source/charon/parser.c
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@ -137,6 +137,19 @@ struct private_parser_s {
*/
status_t (*parse_uint64) (private_parser_t *this, int rule_number, u_int64_t *output_pos);
/**
* @brief parse a given amount of bytes and writes them to a specific location
*
* @param this parser object
* @param rule_number number of current rule
* @param[out] output_pos pointer where to write the parsed result
* @param bytes number of bytes to parse
* @return
* - SUCCESS or
* - PARSE_ERROR when not successful
*/
status_t (*parse_bytes) (private_parser_t *this, int rule_number, u_int8_t *output_pos,size_t bytes);
/**
* @brief parse a single Bit from the current parsing position
*
@ -423,6 +436,34 @@ static status_t parse_uint64(private_parser_t *this, int rule_number, u_int64_t
return SUCCESS;
}
static status_t parse_bytes (private_parser_t *this, int rule_number, u_int8_t *output_pos,size_t bytes)
{
if (this->byte_pos + bytes > this->input_roof)
{
this->logger->log(this->logger, ERROR, " not enough input to parse rule %d %s",
rule_number, mapping_find(encoding_type_m, this->rules[rule_number].type));
return PARSE_ERROR;
}
if (this->bit_pos)
{
this->logger->log(this->logger, ERROR, " found rule %d %s on bitpos %d",
rule_number, mapping_find(encoding_type_m, this->rules[rule_number].type),
this->bit_pos);
return PARSE_ERROR;
}
/* caller interested in result ? */
if (output_pos != NULL)
{
memcpy(output_pos,this->byte_pos,bytes);
this->logger->log_bytes(this->logger, RAW|MOST, " =>", (void*)output_pos, bytes);
}
this->byte_pos += bytes;
return SUCCESS;
}
/**
* implementation of private_parser_t.parse_bit
*/
@ -618,6 +659,15 @@ static status_t parse_payload(private_parser_t *this, payload_type_t payload_typ
}
break;
}
case IKE_SPI:
{
if (this->parse_bytes(this, rule_number, output + rule->offset,8) != SUCCESS)
{
pld->destroy(pld);
return PARSE_ERROR;
}
break;
}
case RESERVED_BIT:
{
if (this->parse_bit(this, rule_number, NULL) != SUCCESS)
@ -858,6 +908,7 @@ parser_t *parser_create(chunk_t data)
this->parse_uint16 = parse_uint16;
this->parse_uint32 = parse_uint32;
this->parse_uint64 = parse_uint64;
this->parse_bytes = parse_bytes;
this->parse_bit = parse_bit;
this->parse_list = parse_list;
this->parse_chunk = parse_chunk;