URI Parsing Functions

CoAP PDUs contain normalized URIs with their path and query split into multiple segments. More...

Functions
int	coap_split_uri (const uint8_t *str_var, size_t len, coap_uri_t *uri)
	Parses a given string into URI components. More...
int	coap_split_path (const uint8_t *s, size_t length, unsigned char *buf, size_t *buflen)
	Splits the given URI path into segments. More...
int	coap_split_query (const uint8_t *s, size_t length, unsigned char *buf, size_t *buflen)
	Splits the given URI query into segments. More...
coap_string_t *	coap_get_query (const struct coap_pdu_t *request)
	Extract query string from request PDU according to escape rules in 6.5.8. More...
coap_string_t *	coap_get_uri_path (const struct coap_pdu_t *request)
	Extract uri_path string from request PDU. More...

Detailed Description

CoAP PDUs contain normalized URIs with their path and query split into multiple segments.

The functions in this module help splitting strings.

Function Documentation

coap_get_query()

coap_string_t* coap_get_query

(

const struct coap_pdu_t *

request

)

Extract query string from request PDU according to escape rules in 6.5.8.

Parameters

request

Request PDU.

Returns

Reconstructed and escaped query string part.

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coap_get_uri_path()

coap_string_t* coap_get_uri_path

(

const struct coap_pdu_t *

request

)

Extract uri_path string from request PDU.

Parameters

request

Request PDU.

Returns

Reconstructed and escaped uri path string part.

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coap_split_path()

int coap_split_path	(	const uint8_t *	s,
		size_t	length,
		unsigned char *	buf,
		size_t *	buflen
	)

Splits the given URI path into segments.

Each segment is preceded by an option pseudo-header with delta-value 0 and the actual length of the respective segment after percent-decoding.

Parameters

s	The path string to split.
length	The actual length of s.
buf	Result buffer for parsed segments.
buflen	Maximum length of buf. Will be set to the actual number of bytes written into buf on success.

Returns

The number of segments created or -1 on error.

Definition at line 400 of file uri.c.

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coap_split_query()

int coap_split_query	(	const uint8_t *	s,
		size_t	length,
		unsigned char *	buf,
		size_t *	buflen
	)

Splits the given URI query into segments.

Each segment is preceded by an option pseudo-header with delta-value 0 and the actual length of the respective query term.

Parameters

s	The query string to split.
length	The actual length of s.
buf	Result buffer for parsed segments.
buflen	Maximum length of buf. Will be set to the actual number of bytes written into buf on success.

Returns

The number of segments created or -1 on error.

Bug:

This function does not reserve additional space for delta > 12.

Definition at line 412 of file uri.c.

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coap_split_uri()

int coap_split_uri	(	const uint8_t *	str_var,
		size_t	len,
		coap_uri_t *	uri
	)

Parses a given string into URI components.

The identified syntactic components are stored in the result parameter uri. Optional URI components that are not specified will be set to { 0, 0 }, except for the port which is set to COAP_DEFAULT_PORT. This function returns 0 if parsing succeeded, a value less than zero otherwise.

Parameters

str_var	The string to split up.
len	The actual length of str_var
uri	The coap_uri_t object to store the result.

Returns

0 on success, or < 0 on error.

Definition at line 53 of file uri.c.

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