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/*
* MIT License
*
* Copyright (c) 2022 Wesley Ellis (https://github.com/tahnok)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef TOTP_FACE_LFS_H_
#define TOTP_FACE_LFS_H_
/*
* TOTP-LFS face
* Time-based one-time password (TOTP) generator using LFS
*
* Reads from a file "totp_uris.txt", containing a single secret key in a
* series of URLs. Each line is what's in a QR code, e.g.:
* otpauth://totp/Example:alice@google.com?secret=JBSWY3DPEHPK3PXP&issuer=Example
* otpauth://totp/ACME%20Co:john.doe@email.com?secret=HXDMVJECJJWSRB3HWIZR4IFUGFTMXBOZ&issuer=ACME%20Co&algorithm=SHA1&digits=6&period=30
*
* This is also the same as what Aegis exports in plain-text format.
* This face performs minimal sanitisation of input, however.
*
* At the moment, to get the records onto the filesystem, start a serial connection and do:
* echo otpauth://totp/Example:alice@google.com?secret=JBSWY3DPEHPK3PXP&issuer=Example > totp_uris.txt
* echo otpauth://totp/ACME%20Co:john.doe@email.com?secret=HXDMVJECJJWSRB3HWIZR4IFUGFTMXBOZ&issuer=ACME%20Co&algorithm=SHA1&digits=6&period=30 >> totp_uris.txt
* (note the double >> in the second one)
*
* You may want to customise the characters that appear to identify the 2FA
* code. These are just the first two characters of the issuer, and it's fine
* to modify the URI.
*
* If you have more than one secret key, press ALARM to cycle through them.
* Press LIGHT to cycle in the other direction or keep it pressed longer to
* activate the light.
*/
#include "movement.h"
typedef struct {
uint32_t timestamp;
uint8_t steps;
uint32_t current_code;
uint8_t current_index;
} totp_lfs_state_t;
void totp_face_lfs_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
void totp_face_lfs_activate(movement_settings_t *settings, void *context);
bool totp_face_lfs_loop(movement_event_t event, movement_settings_t *settings, void *context);
void totp_face_lfs_resign(movement_settings_t *settings, void *context);
#define totp_face_lfs ((const watch_face_t){ \
totp_face_lfs_setup, \
totp_face_lfs_activate, \
totp_face_lfs_loop, \
totp_face_lfs_resign, \
NULL, \
})
#endif // TOTP_FACE_LFS_H_
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