115 lines
4.6 KiB
Scheme
115 lines
4.6 KiB
Scheme
;;;; -*- mode: Scheme; indent-tabs-mode: nil; fill-column: 80; -*-
|
||
;;;;
|
||
;;;; Copyright © 2015 Rémi Delrue <asgeir@free.fr>
|
||
;;;;
|
||
;;;; This program is free software: you can redistribute it and/or modify
|
||
;;;; it under the terms of the GNU General Public License as published by
|
||
;;;; the Free Software Foundation, either version 3 of the License, or
|
||
;;;; (at your option) any later version.
|
||
;;;;
|
||
;;;; This program is distributed in the hope that it will be useful,
|
||
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;;; GNU General Public License for more details.
|
||
;;;;
|
||
;;;; You should have received a copy of the GNU General Public License
|
||
;;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu gnunet fs)
|
||
#:use-module (system foreign)
|
||
#:use-module (gnu gnunet binding-utils)
|
||
#:use-module (gnu gnunet common)
|
||
#:use-module (gnu gnunet configuration)
|
||
#:use-module (gnu gnunet fs uri)
|
||
#:use-module (gnu gnunet fs progress-info)
|
||
#:export (search-service-open
|
||
start-ksk-search
|
||
stop-search
|
||
is-directory?))
|
||
|
||
(define struct-fs-handle
|
||
(list '* '* '* '* '* '* '* '* '* '* '* '* '* '* time-relative
|
||
unsigned-int unsigned-int unsigned-int unsigned-int unsigned-int))
|
||
|
||
(define struct-search-context
|
||
(list '* '* '* '* '* '* '* '* '* '* time-absolute time-relative '*
|
||
unsigned-int unsigned-int uint32 uint32 unsigned-int))
|
||
|
||
(define struct-download-context
|
||
(list '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '* '*
|
||
eddsa-public-key '* uint64 uint64 uint64 uint64 time-absolute
|
||
time-relative uint32 unsigned-int unsigned-int int int int))
|
||
|
||
(define default-max-parallel-downloads 16)
|
||
(define default-max-parallel-requests (* 1024 10))
|
||
|
||
(define-gnunet-fs %search-start
|
||
"GNUNET_FS_search_start" : (list '* '* uint32 unsigned-int '*) -> '*)
|
||
|
||
(define-gnunet-fs %search-stop
|
||
"GNUNET_FS_search_stop" : (list '*) -> void)
|
||
|
||
(define-gnunet-fs %test-for-directory
|
||
"GNUNET_FS_meta_data_test_for_directory" : (list '*) -> int)
|
||
|
||
(define (progress-callback->pointer thunk)
|
||
(procedure->pointer '* (lambda (cls info)
|
||
(thunk info)
|
||
%null-pointer)
|
||
(list '* '*)))
|
||
|
||
;; This is a temporary replacement for the actual GNUNET_FS_start function that
|
||
;; is variadic and, hence, not currently handlable by Guile’s Dynamic FFI.
|
||
;;
|
||
;;+TODO: replace value for avg_block_latency with a call to a function
|
||
;; akin `(time-relative #:minutes 1)`
|
||
(define (%gnunet-fs-start config client-name progress-callback)
|
||
(make-c-struct struct-fs-handle
|
||
(list (unwrap-configuration config)
|
||
(string->pointer client-name)
|
||
(progress-callback->pointer progress-callback)
|
||
%null-pointer ; progress-cb closure
|
||
%null-pointer ; top_head
|
||
%null-pointer ; top_tail
|
||
%null-pointer ; running_head
|
||
%null-pointer ; running_tail
|
||
%null-pointer ; pending_head
|
||
%null-pointer ; pending_tail
|
||
%null-pointer ; probes_head
|
||
%null-pointer ; probes_tail
|
||
%null-pointer ; queue_job
|
||
%null-pointer ; probe_ping_task
|
||
(* 60 1000 1000) ; avg_block_latency (1 minute)
|
||
0 ; active_downloads
|
||
0 ; active_blocks
|
||
0 ; flags
|
||
default-max-parallel-downloads
|
||
default-max-parallel-requests)))
|
||
|
||
(define* (search-service-open config
|
||
#:key resume resume-result suspend result
|
||
result-namespace update error
|
||
paused continued result-stopped
|
||
result-suspend stopped
|
||
#:rest callbacks)
|
||
(define (progress-cb %progress-info)
|
||
(let* ((status (cadr (progress-info-status %progress-info)))
|
||
(callback (getf callbacks status)))
|
||
(when callback (callback %progress-info))))
|
||
(%gnunet-fs-start config "gnunet-search" progress-cb))
|
||
|
||
(define (start-ksk-search handle keywords)
|
||
(let ((uri (make-ksk-uri keywords)))
|
||
(simple-format #t "Starting search on ~a\n" (uri->string uri))
|
||
(%search-start handle (unwrap-uri uri) 0 0 %null-pointer)))
|
||
|
||
(define (stop-search handle)
|
||
(%search-stop handle))
|
||
|
||
;;+TODO: should be (is-directory? search-result) or
|
||
;; (result-is-directory? result)
|
||
(define (is-directory? metadata)
|
||
"Checks some search result’s METADATA if its mime-type matches
|
||
GNUNET_FS_DIRECTORY_MIME."
|
||
(= gnunet-yes (%test-for-directory metadata)))
|