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