Cache API. More...

#include <string.h>
#include <errno.h>
#include "config.h"
#include "msg.h"
#include "capi.h"
#include "IO/IO.h"
#include "IO/Url.h"
#include "chain.h"
#include "history.h"
#include "nav.h"
#include "dpiapi.h"
#include "uicmd.hh"
#include "domain.h"
#include "../dpip/dpip.h"
#include "prefs.h"
#include "bookmark.h"

Include dependency graph for capi.c:

Go to the source code of this file.

Enumerations
enum	{ PENDING = 1 , TIMEOUT = 2 , ABORTED = 4 }
	Flags for conn. More...

Functions
void	a_Capi_ccc (int Op, int Branch, int Dir, ChainLink Info, void Data1, void *Data2)
	CCC function for the CAPI module.

void	a_Capi_init (void)
	Initialize capi&cache data.

static capi_conn_t *	Capi_conn_new (const DilloUrl url, void bw, char server, char datastr)
	Create a new connection data structure.

static capi_conn_t *	Capi_conn_valid (capi_conn_t *conn)
	Validate a capi_conn_t pointer.

static void	Capi_conn_ref (capi_conn_t *conn)
	Increment the reference count and add to the list if not present.

static void	Capi_conn_unref (capi_conn_t *conn)
	Decrement the reference count (and remove from list when zero)

static int	Capi_conn_by_server_cmp (const void v1, const void v2)
	Compare function for searching a conn by server string.

static capi_conn_t *	Capi_conn_find (char *server)
	Find connection data by server.

static void	Capi_conn_resume (void)
	Resume connections that were waiting for dpid to start.

void	a_Capi_conn_abort_by_url (const DilloUrl *url)
	Abort the connection for a given url, using its CCC.

void	a_Capi_set_vsource_url (const DilloUrl *url)
	Store the last URL requested by "view source".

int	a_Capi_dpi_verify_request (BrowserWindow bw, DilloUrl url)
	Safety test: only allow GET\|POST dpi-urls from dpi-generated pages.

static int	Capi_url_uses_dpi (DilloUrl url, char *server_ptr)
	If the url belongs to a dpi server, return its name.

static char *	Capi_dpi_build_cmd (DilloWeb web, char server)
	Build the dpip command tag, according to URL and server.

static void	Capi_dpi_send_source (BrowserWindow bw, DilloUrl url)
	Send the requested URL's source to the "view source" dpi.

static bool_t	Capi_request_permitted (DilloWeb *web)
	Shall we permit this request to open a URL?

int	a_Capi_open_url (DilloWeb web, CA_Callback_t Call, void CbData)
	Most used function for requesting a URL.

static int	Capi_map_cache_flags (uint_t flags)
	Convert cache-defined flags to Capi ones.

int	a_Capi_get_flags (const DilloUrl *Url)
	Return status information of an URL's content-transfer process.

int	a_Capi_get_flags_with_redirection (const DilloUrl *Url)
	Same as a_Capi_get_flags() but following redirections.

int	a_Capi_get_buf (const DilloUrl Url, char PBuf, int BufSize)
	Get the cache's buffer for the URL, and its size.

void	a_Capi_unref_buf (const DilloUrl *Url)
	Unref the cache's buffer when no longer using it.

const char *	a_Capi_get_content_type (const DilloUrl *url)
	Get the Content-Type associated with the URL.

const char *	a_Capi_set_content_type (const DilloUrl url, const char ctype, const char *from)
	Set the Content-Type for the URL.

int	a_Capi_dpi_send_data (const DilloUrl url, void bw, char data, int data_sz, char server, int flags)
	Send data to a dpi (e.g.

int	a_Capi_dpi_send_cmd (DilloUrl url, void bw, char cmd, char server, int flags)
	Send a dpi cmd.

void	a_Capi_stop_client (int Key, int force)
	Remove a client from the cache client queue.

Variables
static Dlist *	CapiConns
	Data list for active dpi connections.

static DilloUrl *	CapiVsUrl = NULL
	Last URL asked for view source.

Detailed Description

Cache API.

This is the module that manages the cache and starts the CCC chains to get the requests served. Kind of a broker.

Definition in file capi.c.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Flags for conn.

Enumerator
PENDING
TIMEOUT
ABORTED

Definition at line 54 of file capi.c.

Function Documentation

◆ a_Capi_ccc()

void a_Capi_ccc	(	int	Op,
		int	Branch,
		int	Dir,
		ChainLink *	Info,
		void *	Data1,
		void *	Data2
	)

CCC function for the CAPI module.

Definition at line 640 of file capi.c.

References a_Bookmarks_chat_add(), a_Cache_entry_remove_by_url(), a_Cache_process_dbuf(), a_Capi_ccc(), a_Chain_bcb(), a_Chain_check(), a_Chain_link_new(), a_Dpi_ccc(), a_Dpiapi_dialog(), a_Http_ccc(), a_Nav_cancel_expect_if_eq(), a_Nav_reload(), a_UIcmd_set_msg(), BCK, DataBuf::Buf, Capi_conn_ref(), Capi_conn_resume(), Capi_conn_unref(), Capi_conn_valid(), dFree(), dReturn_if_fail, IOAbort, IOClose, IORead, ChainLink::LocalKey, MSG_WARN, OpAbort, OpEnd, OpSend, OpStart, DataBuf::Size, and URL_SCHEME.

Referenced by a_Capi_ccc(), a_Capi_conn_abort_by_url(), a_Capi_dpi_send_data(), a_Capi_open_url(), and Capi_conn_resume().

◆ a_Capi_conn_abort_by_url()

void a_Capi_conn_abort_by_url ( const DilloUrl * url )

Abort the connection for a given url, using its CCC.

(OpAbort 2,BCK removes the cache entry) TODO: when conn is already done, the cache entry isn't removed. This may be wrong and needs a revision.

Definition at line 200 of file capi.c.

References a_Capi_ccc(), a_Url_cmp(), BCK, CapiConns, dList_length(), dList_nth_data(), and OpAbort.

Referenced by a_Capi_open_url(), a_Capi_stop_client(), and Cache_process_queue().

◆ a_Capi_dpi_send_cmd()

int a_Capi_dpi_send_cmd	(	DilloUrl *	url,
		void *	bw,
		char *	cmd,
		char *	server,
		int	flags
	)

Send a dpi cmd.

(For instance: add_bookmark, open_url, send_preferences, ...)

Definition at line 613 of file capi.c.

References a_Capi_dpi_send_data().

Referenced by a_Bookmarks_chat_add(), a_Capi_open_url(), Capi_dpi_send_source(), and Dpiapi_dialog_answer_cb().

◆ a_Capi_dpi_send_data()

int a_Capi_dpi_send_data	(	const DilloUrl *	url,
		void *	bw,
		char *	data,
		int	data_sz,
		char *	server,
		int	flags
	)

Send data to a dpi (e.g.

add_bookmark, open_url, send_preferences, ...). Most of the time we send dpi commands, but it also serves for raw data as with "view source".

Definition at line 578 of file capi.c.

References a_Capi_ccc(), a_Chain_dbuf_new(), a_Chain_new(), BCK, Capi_conn_find(), Capi_conn_new(), dFree(), MSG, OpSend, and OpStart.

Referenced by a_Capi_dpi_send_cmd(), and Capi_dpi_send_source().

◆ a_Capi_dpi_verify_request()

int a_Capi_dpi_verify_request	(	BrowserWindow *	bw,
		DilloUrl *	url
	)

Safety test: only allow GET|POST dpi-urls from dpi-generated pages.

Definition at line 233 of file capi.c.

References a_History_get_url(), a_Nav_stack_size(), dStr_printable(), dStrAsciiCasecmp(), FALSE, MSG, NAV_TOP_UIDX, TRUE, URL_DATA, URL_FLAGS, URL_Get, URL_PATH, URL_Post, URL_SCHEME, and URL_STR.

Referenced by a_Capi_open_url(), and Html_tag_open_meta().

◆ a_Capi_get_buf()

int a_Capi_get_buf	(	const DilloUrl *	Url,
		char **	PBuf,
		int *	BufSize
	)

Get the cache's buffer for the URL, and its size.

Return: 1 cached, 0 not cached.

Definition at line 543 of file capi.c.

References a_Cache_get_buf().

Referenced by a_Html_load_stylesheet(), a_Nav_get_buf(), and Capi_dpi_send_source().

◆ a_Capi_get_content_type()

const char * a_Capi_get_content_type ( const DilloUrl * url )

Get the Content-Type associated with the URL.

Definition at line 559 of file capi.c.

References a_Cache_get_content_type().

Referenced by a_Nav_get_content_type().

◆ a_Capi_get_flags()

int a_Capi_get_flags ( const DilloUrl * Url )

Return status information of an URL's content-transfer process.

Definition at line 522 of file capi.c.

References a_Cache_get_flags(), and Capi_map_cache_flags().

Referenced by a_Capi_open_url(), and Capi_request_permitted().

◆ a_Capi_get_flags_with_redirection()

int a_Capi_get_flags_with_redirection ( const DilloUrl * Url )

Same as a_Capi_get_flags() but following redirections.

Definition at line 532 of file capi.c.

References a_Cache_get_flags_with_redirection(), and Capi_map_cache_flags().

Referenced by a_Capi_open_url(), a_Html_image_new(), a_Html_load_stylesheet(), Html_tag_open_a(), Html_tag_open_audio(), Html_tag_open_embed(), Html_tag_open_frame(), Html_tag_open_object(), Html_tag_open_source(), and Html_tag_open_video().

◆ a_Capi_init()

void a_Capi_init ( void )

Initialize capi&cache data.

Definition at line 81 of file capi.c.

References a_Cache_init(), CapiConns, and dList_new().

Referenced by main().

◆ a_Capi_open_url()

int a_Capi_open_url	(	DilloWeb *	web,
		CA_Callback_t	Call,
		void *	CbData
	)

Most used function for requesting a URL.

TODO: clean up the ad-hoc bindings with an API that allows dynamic addition of new plugins.

Returns: A primary key for identifying the client, 0 if the client is aborted in the process.

Definition at line 394 of file capi.c.

References _MSG, a_Cache_download_enabled(), a_Cache_open_url(), a_Capi_ccc(), a_Capi_conn_abort_by_url(), a_Capi_dpi_send_cmd(), a_Capi_dpi_verify_request(), a_Capi_get_flags(), a_Capi_get_flags_with_redirection(), a_Chain_new(), a_UIcmd_set_msg(), a_Url_set_flags(), a_Web_free(), BCK, _DilloWeb::bw, Capi_conn_new(), Capi_conn_valid(), Capi_dpi_build_cmd(), Capi_dpi_send_source(), CAPI_IsCached, Capi_request_permitted(), Capi_url_uses_dpi(), dFree(), dStrAsciiCasecmp(), dStrerror, _DilloWeb::filename, _DilloWeb::flags, MSG_WARN, OpStart, _DilloWeb::stream, _DilloWeb::url, URL_E2EQuery, URL_FLAGS, URL_SCHEME, URL_STR, WEB_Download, and WEB_RootUrl.

Referenced by a_Html_load_stylesheet(), a_Nav_save_url(), StyleEngine::apply(), Html_load_image(), and Nav_open_url().

◆ a_Capi_set_content_type()

const char * a_Capi_set_content_type	(	const DilloUrl *	url,
		const char *	ctype,
		const char *	from
	)

Set the Content-Type for the URL.

Definition at line 567 of file capi.c.

References a_Cache_set_content_type().

Referenced by a_Html_load_stylesheet(), and Html_update_content_type().

◆ a_Capi_set_vsource_url()

void a_Capi_set_vsource_url ( const DilloUrl * url )

Store the last URL requested by "view source".

Definition at line 224 of file capi.c.

References a_Url_dup(), a_Url_free(), and CapiVsUrl.

Referenced by a_Nav_set_vsource_url().

◆ a_Capi_stop_client()

void a_Capi_stop_client	(	int	Key,
		int	force
	)

Remove a client from the cache client queue.

force = also abort the CCC if this is the last client.

Definition at line 623 of file capi.c.

References _MSG, a_Cache_client_get_if_unique(), a_Cache_stop_client(), a_Capi_conn_abort_by_url(), CacheClient::BufSize, and CacheClient::Url.

Referenced by a_Bw_stop_clients().

◆ a_Capi_unref_buf()

void a_Capi_unref_buf ( const DilloUrl * Url )

Unref the cache's buffer when no longer using it.

Definition at line 551 of file capi.c.

References a_Cache_unref_buf().

Referenced by a_Html_load_stylesheet(), and a_Nav_unref_buf().

◆ Capi_conn_by_server_cmp()

static int Capi_conn_by_server_cmp	(	const void *	v1,
		const void *	v2
	)

static

Compare function for searching a conn by server string.

Definition at line 156 of file capi.c.

References dReturn_val_if_fail.

Referenced by Capi_conn_find().

◆ Capi_conn_find()

static capi_conn_t * Capi_conn_find ( char * server )

static

Find connection data by server.

Definition at line 167 of file capi.c.

References Capi_conn_by_server_cmp(), CapiConns, and dList_find_custom().

Referenced by a_Capi_dpi_send_data().

◆ Capi_conn_new()

static capi_conn_t * Capi_conn_new	(	const DilloUrl *	url,
		void *	bw,
		char *	server,
		char *	datastr
	)

static

Create a new connection data structure.

Definition at line 95 of file capi.c.

References a_Url_dup(), dNew, dStrdup(), and PENDING.

Referenced by a_Capi_dpi_send_data(), and a_Capi_open_url().

◆ Capi_conn_ref()

static void Capi_conn_ref ( capi_conn_t * conn )

static

Increment the reference count and add to the list if not present.

Definition at line 124 of file capi.c.

References _MSG, CapiConns, and dList_append().

Referenced by a_Capi_ccc().

◆ Capi_conn_resume()

static void Capi_conn_resume ( void )

static

Resume connections that were waiting for dpid to start.

Definition at line 175 of file capi.c.

References a_Capi_ccc(), a_Chain_dbuf_new(), BCK, CapiConns, dFree(), dList_length(), dList_nth_data(), OpSend, and PENDING.

Referenced by a_Capi_ccc().

◆ Capi_conn_unref()

static void Capi_conn_unref ( capi_conn_t * conn )

static

Decrement the reference count (and remove from list when zero)

Definition at line 136 of file capi.c.

References _MSG, a_Url_free(), CapiConns, dFree(), dList_length(), and dList_remove().

Referenced by a_Capi_ccc().

◆ Capi_conn_valid()

static capi_conn_t * Capi_conn_valid ( capi_conn_t * conn )

static

Validate a capi_conn_t pointer.

Returns: NULL if not valid, conn otherwise.

Definition at line 116 of file capi.c.

References CapiConns, and dList_find().

Referenced by a_Capi_ccc(), and a_Capi_open_url().

◆ Capi_dpi_build_cmd()

static char * Capi_dpi_build_cmd	(	DilloWeb *	web,
		char *	server
	)

static

Build the dpip command tag, according to URL and server.

Definition at line 303 of file capi.c.

References a_Dpip_build_cmd(), _DilloWeb::filename, DilloPrefs::http_user_agent, prefs, _DilloWeb::url, and URL_STR.

Referenced by a_Capi_open_url().

◆ Capi_dpi_send_source()

static void Capi_dpi_send_source	(	BrowserWindow *	bw,
		DilloUrl *	url
	)

static

Send the requested URL's source to the "view source" dpi.

Definition at line 323 of file capi.c.

References a_Capi_dpi_send_cmd(), a_Capi_dpi_send_data(), a_Capi_get_buf(), a_Dpip_build_cmd(), CapiVsUrl, dFree(), and URL_STR.

Referenced by a_Capi_open_url().

◆ Capi_map_cache_flags()

static int Capi_map_cache_flags ( uint_t flags )

static

Convert cache-defined flags to Capi ones.

Definition at line 501 of file capi.c.

References CA_InProgress, CA_IsEmpty, CAPI_Completed, CAPI_InProgress, CAPI_IsCached, and CAPI_IsEmpty.

Referenced by a_Capi_get_flags(), and a_Capi_get_flags_with_redirection().

◆ Capi_request_permitted()

static bool_t Capi_request_permitted ( DilloWeb * web )

static

Shall we permit this request to open a URL?

Definition at line 349 of file capi.c.

References a_Capi_get_flags(), a_Domain_permit(), CAPI_IsCached, dStrAsciiCasecmp(), FALSE, _DilloWeb::flags, MSG, _DilloWeb::requester, TRUE, _DilloWeb::url, URL_SCHEME, URL_STR, and WEB_RootUrl.

Referenced by a_Capi_open_url().

◆ Capi_url_uses_dpi()

static int Capi_url_uses_dpi	(	DilloUrl *	url,
		char **	server_ptr
	)

static

If the url belongs to a dpi server, return its name.

Definition at line 270 of file capi.c.

References dFree(), dStr_append_l(), dStr_free(), dStr_new(), dStrdup(), dStrnAsciiCasecmp(), dStrndup(), Dstr::str, and URL_STR.

Referenced by a_Capi_open_url().

Variable Documentation

◆ CapiConns

Dlist* CapiConns

static

Data list for active dpi connections.

Definition at line 64 of file capi.c.

Referenced by a_Capi_conn_abort_by_url(), a_Capi_init(), Capi_conn_find(), Capi_conn_ref(), Capi_conn_resume(), Capi_conn_unref(), and Capi_conn_valid().

◆ CapiVsUrl

DilloUrl* CapiVsUrl = NULL

static

Last URL asked for view source.

Definition at line 67 of file capi.c.

Referenced by a_Capi_set_vsource_url(), and Capi_dpi_send_source().

Enumerations

Functions

Variables

Detailed Description

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ a_Capi_ccc()

◆ a_Capi_conn_abort_by_url()

◆ a_Capi_dpi_send_cmd()

◆ a_Capi_dpi_send_data()

◆ a_Capi_dpi_verify_request()

◆ a_Capi_get_buf()

◆ a_Capi_get_content_type()

◆ a_Capi_get_flags()

◆ a_Capi_get_flags_with_redirection()

◆ a_Capi_init()

◆ a_Capi_open_url()

◆ a_Capi_set_content_type()

◆ a_Capi_set_vsource_url()

◆ a_Capi_stop_client()

◆ a_Capi_unref_buf()

◆ Capi_conn_by_server_cmp()

◆ Capi_conn_find()

◆ Capi_conn_new()

◆ Capi_conn_ref()

◆ Capi_conn_resume()

◆ Capi_conn_unref()

◆ Capi_conn_valid()

◆ Capi_dpi_build_cmd()

◆ Capi_dpi_send_source()

◆ Capi_map_cache_flags()

◆ Capi_request_permitted()

◆ Capi_url_uses_dpi()

Variable Documentation

◆ CapiConns

◆ CapiVsUrl