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Diffstat (limited to 'gnu/installer/newt/wifi.scm')
| -rw-r--r-- | gnu/installer/newt/wifi.scm | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/gnu/installer/newt/wifi.scm b/gnu/installer/newt/wifi.scm new file mode 100644 index 0000000000..6cac54399a --- /dev/null +++ b/gnu/installer/newt/wifi.scm @@ -0,0 +1,243 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com> +;;; +;;; This file is part of GNU Guix. +;;; +;;; GNU Guix 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. +;;; +;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>. + +(define-module (gnu installer newt wifi) + #:use-module (gnu installer connman) + #:use-module (gnu installer steps) + #:use-module (gnu installer newt utils) + #:use-module (gnu installer newt page) + #:use-module (guix i18n) + #:use-module (guix records) + #:use-module (ice-9 format) + #:use-module (ice-9 popen) + #:use-module (ice-9 receive) + #:use-module (ice-9 regex) + #:use-module (ice-9 rdelim) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) + #:use-module (newt) + #:export (run-wifi-page)) + +;; This record associates a connman service to its key the listbox. +(define-record-type* <service-item> + service-item make-service-item + service-item? + (service service-item-service) ; connman <service> + (key service-item-key)) ; newt listbox-key + +(define (strength->string strength) + "Convert STRENGTH as an integer percentage into a text printable strength +bar using unicode characters. Taken from NetworkManager's +nmc_wifi_strength_bars." + (let ((quarter #\x2582) + (half #\x2584) + (three-quarter #\x2586) + (full #\x2588)) + (cond + ((> strength 80) + ;; ▂▄▆█ + (string quarter half three-quarter full)) + ((> strength 55) + ;; ▂▄▆_ + (string quarter half three-quarter #\_)) + ((> strength 30) + ;; ▂▄__ + (string quarter half #\_ #\_)) + ((> strength 5) + ;; ▂___ + (string quarter #\_ #\_ #\_)) + (else + ;; ____ + (string quarter #\_ #\_ #\_ #\_))))) + +(define (force-wifi-scan) + "Force a wifi scan. Raise a condition if no wifi technology is available." + (let* ((technologies (connman-technologies)) + (wifi-technology + (find (lambda (technology) + (string=? (technology-type technology) "wifi")) + technologies))) + (if wifi-technology + (connman-scan-technology wifi-technology) + (raise (condition + (&message + (message (G_ "Unable to find a wifi technology")))))))) + +(define (draw-scanning-page) + "Draw a page to indicate a wifi scan in in progress." + (draw-info-page (G_ "Scanning wifi for available networks, please wait.") + (G_ "Scan in progress"))) + +(define (run-wifi-password-page) + "Run a page prompting user for a password and return it." + (run-input-page (G_ "Please enter the wifi password") + (G_ "Password required"))) + +(define (run-wrong-password-page service-name) + "Run a page to inform user of a wrong password input." + (run-error-page + (format #f (G_ "The password you entered for ~a is incorrect.") + service-name) + (G_ "Wrong password"))) + +(define (run-unknown-error-page service-name) + "Run a page to inform user that a connection error happened." + (run-error-page + (format #f + (G_ "An error occured while trying to connect to ~a, please retry.") + service-name) + (G_ "Connection error"))) + +(define (password-callback) + (run-wifi-password-page)) + +(define (connect-wifi-service listbox service-items) + "Connect to the wifi service selected in LISTBOX. SERVICE-ITEMS is the list +of <service-item> records present in LISTBOX." + (let* ((listbox-key (current-listbox-entry listbox)) + (item (find (lambda (item) + (eq? (service-item-key item) listbox-key)) + service-items)) + (service (service-item-service item)) + (service-name (service-name service)) + (form (draw-connecting-page service-name))) + (dynamic-wind + (const #t) + (lambda () + (guard (c ((connman-password-error? c) + (run-wrong-password-page service-name) + #f) + ((connman-already-connected-error? c) + #t) + ((connman-connection-error? c) + (run-unknown-error-page service-name) + #f)) + (connman-connect-with-auth service password-callback))) + (lambda () + (destroy-form-and-pop form))))) + +(define (run-wifi-scan-page) + "Force a wifi scan and draw a page during the operation." + (let ((form (draw-scanning-page))) + (force-wifi-scan) + (destroy-form-and-pop form))) + +(define (wifi-services) + "Return all the connman services of wifi type." + (let ((services (connman-services))) + (filter (lambda (service) + (and (string=? (service-type service) "wifi") + (not (string-null? (service-name service))))) + services))) + +(define* (fill-wifi-services listbox wifi-services) + "Append all the services in WIFI-SERVICES to the given LISTBOX." + (clear-listbox listbox) + (map (lambda (service) + (let* ((text (service->text service)) + (key (append-entry-to-listbox listbox text))) + (service-item + (service service) + (key key)))) + wifi-services)) + +;; Maximum length of a wifi service name. +(define service-name-max-length (make-parameter 20)) + +;; Heigth of the listbox displaying wifi services. +(define wifi-listbox-heigth (make-parameter 20)) + +;; Information textbox width. +(define info-textbox-width (make-parameter 40)) + +(define (service->text service) + "Return a string composed of the name and the strength of the given +SERVICE. A '*' preceding the service name indicates that it is connected." + (let* ((name (service-name service)) + (padded-name (string-pad-right name + (service-name-max-length))) + (strength (service-strength service)) + (strength-string (strength->string strength)) + (state (service-state service)) + (connected? (or (string=? state "online") + (string=? state "ready")))) + (format #f "~c ~a ~a~%" + (if connected? #\* #\ ) + padded-name + strength-string))) + +(define (run-wifi-page) + "Run a page displaying available wifi networks in a listbox. Connect to the +network when the corresponding listbox entry is selected. A button allow to +force a wifi scan." + (let* ((listbox (make-listbox + -1 -1 + (wifi-listbox-heigth) + (logior FLAG-SCROLL FLAG-BORDER FLAG-RETURNEXIT))) + (form (make-form)) + (buttons-grid (make-grid 1 1)) + (middle-grid (make-grid 2 1)) + (info-text (G_ "Please select a wifi network.")) + (info-textbox + (make-reflowed-textbox -1 -1 info-text + (info-textbox-width) + #:flags FLAG-BORDER)) + (cancel-button (make-button -1 -1 (G_ "Cancel"))) + (scan-button (make-button -1 -1 (G_ "Scan"))) + (services (wifi-services)) + (service-items '())) + + (if (null? services) + (append-entry-to-listbox listbox (G_ "No wifi detected")) + (set! service-items (fill-wifi-services listbox services))) + + (set-grid-field middle-grid 0 0 GRID-ELEMENT-COMPONENT listbox) + (set-grid-field middle-grid 1 0 GRID-ELEMENT-COMPONENT scan-button + #:anchor ANCHOR-TOP + #:pad-left 2) + (set-grid-field buttons-grid 0 0 GRID-ELEMENT-COMPONENT cancel-button) + + (add-components-to-form form + info-textbox + listbox scan-button + cancel-button) + (make-wrapped-grid-window + (basic-window-grid info-textbox middle-grid buttons-grid) + (G_ "Wifi selection")) + + (receive (exit-reason argument) + (run-form form) + (dynamic-wind + (const #t) + (lambda () + (when (eq? exit-reason 'exit-component) + (cond + ((components=? argument scan-button) + (run-wifi-scan-page) + (run-wifi-page)) + ((components=? argument cancel-button) + (raise + (condition + (&installer-step-abort)))) + ((components=? argument listbox) + (let ((result (connect-wifi-service listbox service-items))) + (unless result + (run-wifi-page))))))) + (lambda () + (destroy-form-and-pop form)))))) |