src/http_parser.c File Reference

HTTP protocol parser. More...

Data Structures
struct	hp_transaction_tag
struct	hp_header_field_tag
	Holds a header field key and value. More...
Functions
hp_transaction_s *	hp_create_transaction (const hp_role_e role)
	Initialise a blank HTTP transaction.
void	hp_transaction_free (hp_transaction_s *transaction)
	Free a HTTP transaction.
bool	hp_add_data (hp_transaction_s *transaction, const char *data, const size_t dataLen)
	Call when you want to add data to a transaction.
hp_parse_result_e	hp_parse_data (hp_transaction_s *transaction)
	Parse the message buffered.
bool	hp_set_header_field_value (const hp_transaction_s *transaction, const char *value)
	Sets a header field value.
const char *	hp_get_host (hp_transaction_s *transaction)
	Return the host if given.
unsigned short int	hp_get_host_port (const hp_transaction_s *transaction)
	Returns the parsed host port (default of HTTP_DEFAULT_PORT if none given).
http_method_e	hp_get_method (const hp_transaction_s *transaction)
	Gets the method of the request.
size_t	hp_get_raw_bytes (hp_transaction_s *transaction, char *buffer, const size_t bufferLen)
	Gets the raw bytes from the transaction.
size_t	hp_get_number_raw_bytes (const hp_transaction_s *transaction)
	Returns how much raw data there is.

---

Detailed Description

HTTP protocol parser.

Parses a stream of bytes into a "transaction".

Date:

23 Feb 2010

Author:

Zachary Sims <zacs7@users.sourceforge.net>

Module prefix: hp_

$Id$

---

Function Documentation

bool hp_add_data	(	hp_transaction_s *	transaction,
		const char *	data,
		const size_t	dataLen
	)

Call when you want to add data to a transaction.

See also:

hp_parse_data()

Parameters:

	transaction	The transaction to add data to.
	data	The data to add.
	dataLen	The length of the data to add.

Returns:

true on success. On error, false is returned.

hp_transaction_s* hp_create_transaction

(

const hp_role_e

role

)

Initialise a blank HTTP transaction.

It must be freed with http_free_transaction().

See also:

http_free_transaction()

Parameters:

role

The role the parser will take.

Returns:

A blank HTTP transaction. On error, NULL is returned.

const char* hp_get_host

(

hp_transaction_s *

transaction

)

Return the host if given.

The hostname will not exceed HTTP_LIMIT_HOSTNAME_LENGTH.

Returns:

The host to connect to (nul terminated) as a IP or hostname.

already "cached"

unsigned short int hp_get_host_port

(

const hp_transaction_s *

transaction

)

Returns the parsed host port (default of HTTP_DEFAULT_PORT if none given).

Parameters:

transaction

The transaction to return from.

Returns:

The port of the host given in the request path or Host: header.

http_method_e hp_get_method

(

const hp_transaction_s *

transaction

)

Gets the method of the request.

Parameters:

transaction

The transaction to return from.

Returns:

the request method.

size_t hp_get_number_raw_bytes

(

const hp_transaction_s *

transaction

)

Returns how much raw data there is.

Parameters:

transaction

The transaction to check if there is unread data on.

Returns:

The number of raw bytes that haven't been read yet. 0 if there are none.

size_t hp_get_raw_bytes	(	hp_transaction_s *	transaction,
		char *	buffer,
		const size_t	bufferLen
	)

Gets the raw bytes from the transaction.

Parameters:

	transaction	The raw bytes to return.
	buffer	The buffer to write to.
	bufferLen	The maximum size of buffer.

Returns:

>0 if buffer contains raw bytes. On EOF or error 0 is returned.

hp_parse_result_e hp_parse_data

(

hp_transaction_s *

transaction

)

Parse the message buffered.

See also:

hp_add_data()

Parameters:

transaction

The transaction to parse.

Returns:

true on success. On error, false is returned.

Todo:

HTTP_ROLE_CLIENT for parsing response line

Todo:

use the return value of path and header fields.

bool hp_set_header_field_value	(	const hp_transaction_s *	transaction,
		const char *	value
	)

Sets a header field value.

Returns true if the value was set. On error, false is returned.

Parameters:

	transaction	The transaction to set the header field value of.
	value

Todo:

Replace field value OR add it to the end of the headers.

Todo:

Detect EOL style from transaction

void hp_transaction_free

(

hp_transaction_s *

transaction

)

Free a HTTP transaction.

Parameters:

transaction

The transaction to free.