NetSurf: utils/http/cache-control.c File Reference

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#include <limits.h>
#include <stdlib.h>
#include "utils/corestrings.h"
#include "utils/http.h"
#include "utils/http/generics.h"
#include "utils/http/primitives.h"

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Data Structures
struct	http_cache_control
	Representation of a Cache-Control. More...

struct	http_directive
	Representation of a directive. More...

Typedefs
typedef struct http_directive	http_directive
	Representation of a directive. More...

Functions
static void	http_destroy_directive (http_directive *self)

static nserror	http__parse_directive (const char input, http_directive result)

static void	http_directive_list_destroy (http_directive *list)

static nserror	http_directive_list_find_item (const http_directive list, lwc_string name, lwc_string **value)

static const http_directive *	http_directive_list_iterate (const http_directive cur, lwc_string name, lwc_string *value)

static uint32_t	count (const http_directive list, lwc_string key)

static bool	check_duplicates (const http_directive *directives)

static nserror	parse_max_age (lwc_string value, uint32_t result)

nserror	http_parse_cache_control (const char header_value, http_cache_control *result)
	Parse an HTTP Cache-Control header value. More...

void	http_cache_control_destroy (http_cache_control *victim)
	Destroy a cache_control object. More...

bool	http_cache_control_has_max_age (http_cache_control *cc)
	Determine if a valid max-age directive is present. More...

uint32_t	http_cache_control_max_age (http_cache_control *cc)
	Get the value of a cache control's max-age. More...

bool	http_cache_control_no_cache (http_cache_control *cc)
	Get the value of a cache control's no-cache flag. More...

bool	http_cache_control_no_store (http_cache_control *cc)
	Get the value of a cache control's no-store flag. More...

Typedef Documentation

◆ http_directive

typedef struct http_directive http_directive

Representation of a directive.

Function Documentation

◆ check_duplicates()

static bool check_duplicates ( const http_directive * directives )

static

Definition at line 174 of file cache-control.c.

References count(), http_directive_list_iterate(), and result.

Referenced by http_parse_cache_control().

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◆ count()

static uint32_t count	(	const http_directive *	list,
		lwc_string *	key
	)

static

Definition at line 157 of file cache-control.c.

References http_directive::base, count(), http_directive::name, and http__item::next.

Referenced by CookieWindow::_BuildDomainList(), _talloc_array(), _talloc_realloc_array(), _talloc_zero_array(), ascii_count_alpha(), ascii_count_alpha_lower(), ascii_count_alpha_upper(), ascii_count_digit(), ascii_count_digit_or_colon(), box_count_children(), box_parse_multi_lengths(), browser_window_get_cookie_count(), browser_window_reload(), check_duplicates(), count(), duk__concat_and_join_helper(), duk__dragon4_format_uint32(), duk__inp_get_cp(), duk__refcount_free_pending(), duk__slow_case_conversion(), duk_bi_array_prototype_join_shared(), duk_concat_2(), duk_decode_string(), duk_heap_process_finalize_list(), duk_hobject_refcount_finalize_norz(), duk_pop_n(), form__select_process_selection(), layout__get_list_item_count(), layout_table(), node_count_siblings(), ro_gui_url_suggest_callback(), save_complete_save_html_objects(), save_complete_save_html_stylesheets(), scan_process_list(), time__parse_hh_mm_ss(), treeview_redraw_search(), treeview_redraw_tree(), and urldb_get_cookie().

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◆ http__parse_directive()

static nserror http__parse_directive	(	const char **	input,
		http_directive **	result
	)

static

Definition at line 58 of file cache-control.c.

References HTTP__ITEM_INIT, http__parse_quoted_string(), http__parse_token(), http__skip_LWS(), http_destroy_directive(), http_directive::name, NSERROR_NOMEM, NSERROR_OK, result, and http_directive::value.

Referenced by http_parse_cache_control().

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◆ http_cache_control_destroy()

void http_cache_control_destroy ( http_cache_control * victim )

Destroy a cache_control object.

Parameters

victim Object to destroy

Definition at line 326 of file cache-control.c.

Referenced by llcache_fetch_parse_cache_control().

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◆ http_cache_control_has_max_age()

bool http_cache_control_has_max_age ( http_cache_control * cc )

Determine if a valid max-age directive is present.

Parameters

cc	Object to inspect

Returns: Whether max-age is valid

Definition at line 332 of file cache-control.c.

References http_cache_control::max_age_valid.

Referenced by llcache_fetch_parse_cache_control().

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◆ http_cache_control_max_age()

uint32_t http_cache_control_max_age ( http_cache_control * cc )

Get the value of a cache control's max-age.

Parameters

cc	Object to inspect

Returns: Max age, in delta-seconds

Definition at line 338 of file cache-control.c.

References http_cache_control::max_age.

Referenced by llcache_fetch_parse_cache_control().

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◆ http_cache_control_no_cache()

bool http_cache_control_no_cache ( http_cache_control * cc )

Get the value of a cache control's no-cache flag.

Parameters

cc	Object to inspect

Returns: Whether caching is forbidden

Definition at line 344 of file cache-control.c.

References http_cache_control::no_cache.

Referenced by llcache_fetch_parse_cache_control().

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◆ http_cache_control_no_store()

bool http_cache_control_no_store ( http_cache_control * cc )

Get the value of a cache control's no-store flag.

Parameters

cc	Object to inspect

Returns: Whether persistent caching is forbidden

Definition at line 350 of file cache-control.c.

References http_cache_control::no_store.

Referenced by llcache_fetch_parse_cache_control().

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◆ http_destroy_directive()

static void http_destroy_directive ( http_directive * self )

static

Definition at line 49 of file cache-control.c.

References http_directive::name, and http_directive::value.

Referenced by http__parse_directive().

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◆ http_directive_list_destroy()

static void http_directive_list_destroy ( http_directive * list )

static

Definition at line 110 of file cache-control.c.

References http__item_list_destroy.

Referenced by http_parse_cache_control().

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◆ http_directive_list_find_item()

static nserror http_directive_list_find_item	(	const http_directive *	list,
		lwc_string *	name,
		lwc_string **	value
	)

static

Definition at line 115 of file cache-control.c.

References http_directive::base, http_directive::name, http__item::next, NSERROR_NOT_FOUND, NSERROR_OK, and http_directive::value.

Referenced by http_parse_cache_control().

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◆ http_directive_list_iterate()

static const http_directive * http_directive_list_iterate	(	const http_directive *	cur,
		lwc_string **	name,
		lwc_string **	value
	)

static

Definition at line 140 of file cache-control.c.

References http_directive::base, http_directive::name, http__item::next, and http_directive::value.

Referenced by check_duplicates().

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◆ http_parse_cache_control()

nserror http_parse_cache_control	(	const char *	header_value,
		http_cache_control **	result
	)

Parse an HTTP Cache-Control header value.

Parameters

header_value	Header value to parse
result	Pointer to location to receive result

Returns: NSERROR_OK on success, NSERROR_NOMEM on memory exhaustion, appropriate error otherwise

Definition at line 235 of file cache-control.c.

References check_duplicates(), http__item_list_parse, http__parse_directive(), http__skip_LWS(), http_directive_list_destroy(), http_directive_list_find_item(), http_cache_control::max_age, http_cache_control::max_age_valid, http_cache_control::no_cache, http_cache_control::no_store, NSERROR_NOMEM, NSERROR_NOT_FOUND, NSERROR_OK, parse_max_age(), and result.

Referenced by llcache_fetch_parse_cache_control().

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◆ parse_max_age()

static nserror parse_max_age	(	lwc_string *	value,
		uint32_t *	result
	)

static

Definition at line 200 of file cache-control.c.

References NSERROR_NOT_FOUND, NSERROR_OK, and result.

Referenced by http_parse_cache_control().

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