# Now we're all set to include gossamer's make rules.
include $(GOSSAMER_PATH)/make.mk
+CFLAGS+=-D_POSIX_C_SOURCE=200112L
+
define n
+++ /dev/null
-/*
- * 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.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-#include "TOTP.h"
-#include "base32.h"
-
-#include "watch.h"
-#include "watch_utility.h"
-#include "filesystem.h"
-
-#include "totp_face_lfs.h"
-
-#define MAX_TOTP_RECORDS 30
-#define MAX_TOTP_SECRET_SIZE 128
-#define TOTP_FILE "totp_uris.txt"
-
-const char* TOTP_URI_START = "otpauth://totp/";
-
-struct totp_record {
- char label[2];
- hmac_alg algorithm;
- uint8_t period;
- uint8_t secret_size;
-
- union {
- uint8_t *secret;
- struct {
- uint16_t file_secret_offset;
- uint16_t file_secret_length;
- };
- };
-};
-
-/* This is used if we're not storing all the secrets but instead
- * calculating them on demand. Avoids malloc in normal operation.
- */
-static uint8_t current_secret[MAX_TOTP_SECRET_SIZE];
-
-static struct totp_record totp_records[MAX_TOTP_RECORDS];
-static uint8_t num_totp_records = 0;
-
-static void init_totp_record(struct totp_record *totp_record) {
- totp_record->label[0] = 'A';
- totp_record->label[1] = 'A';
- totp_record->algorithm = SHA1;
- totp_record->period = 30;
- totp_record->secret_size = 0;
-}
-
-static bool totp_face_lfs_read_param(struct totp_record *totp_record, char *param, char *value) {
- if (!strcmp(param, "issuer")) {
- if (value[0] == '\0' || value[1] == '\0') {
- printf("TOTP issuer must be >= 2 chars, got '%s'\n", value);
- return false;
- }
- totp_record->label[0] = value[0];
- totp_record->label[1] = value[1];
- } else if (!strcmp(param, "secret")) {
- totp_record->file_secret_length = strlen(value);
- if (UNBASE32_LEN(totp_record->file_secret_length) > MAX_TOTP_SECRET_SIZE) {
- printf("TOTP secret too long: %s\n", value);
- return false;
- }
- totp_record->secret_size = base32_decode((unsigned char *)value, current_secret);
- if (totp_record->secret_size == 0) {
- printf("TOTP can't decode secret: %s\n", value);
- return false;
- }
- } else if (!strcmp(param, "digits")) {
- if (!strcmp(param, "6")) {
- printf("TOTP got %s, not 6 digits\n", value);
- return false;
- }
- } else if (!strcmp(param, "period")) {
- totp_record->period = atoi(value);
- if (totp_record->period == 0) {
- printf("TOTP invalid period %s\n", value);
- return false;
- }
- } else if (!strcmp(param, "algorithm")) {
- if (!strcmp(value, "SHA1")) {
- totp_record->algorithm = SHA1;
- }
- else if (!strcmp(value, "SHA224")) {
- totp_record->algorithm = SHA224;
- }
- else if (!strcmp(value, "SHA256")) {
- totp_record->algorithm = SHA256;
- }
- else if (!strcmp(value, "SHA384")) {
- totp_record->algorithm = SHA384;
- }
- else if (!strcmp(value, "SHA512")) {
- totp_record->algorithm = SHA512;
- }
- else {
- printf("TOTP ignored due to algorithm %s\n", value);
- return false;
- }
- }
-
- return true;
-}
-
-static void totp_face_lfs_read_file(char *filename) {
- // For 'format' of file, see comment at top.
- const size_t uri_start_len = strlen(TOTP_URI_START);
-
- if (!filesystem_file_exists(filename)) {
- printf("TOTP file error: %s\n", filename);
- return;
- }
-
- char line[256];
- int32_t offset = 0, old_offset = 0;
- while (old_offset = offset, filesystem_read_line(filename, line, &offset, 255) && strlen(line)) {
- if (num_totp_records == MAX_TOTP_RECORDS) {
- printf("TOTP max records: %d\n", MAX_TOTP_RECORDS);
- break;
- }
-
- // Check that it looks like a URI
- if (strncmp(TOTP_URI_START, line, uri_start_len)) {
- printf("TOTP invalid uri start: %s\n", line);
- continue;
- }
-
- // Check that we can find a '?' (to start our parameters)
- char *param;
- char *param_saveptr = NULL;
- char *params = strchr(line + uri_start_len, '?');
- if (params == NULL) {
- printf("TOTP no params: %s\n", line);
- continue;
- }
-
- // Process the parameters and put them in the record
- init_totp_record(&totp_records[num_totp_records]);
- bool error = false;
- param = strtok_r(params + 1, "&", ¶m_saveptr);
- do {
- char *param_middle = strchr(param, '=');
- *param_middle = '\0';
- if (totp_face_lfs_read_param(&totp_records[num_totp_records], param, param_middle + 1)) {
- if (!strcmp(param, "secret")) {
- totp_records[num_totp_records].file_secret_offset = old_offset + (param_middle + 1 - line);
- }
- } else {
- error = true;
- }
- } while ((param = strtok_r(NULL, "&", ¶m_saveptr)));
-
- if (error) {
- totp_records[num_totp_records].secret_size = 0;
- continue;
- }
-
- // If we found a probably valid TOTP record, keep it.
- if (totp_records[num_totp_records].secret_size) {
- num_totp_records += 1;
- } else {
- printf("TOTP missing secret: %s\n", line);
- }
- }
-}
-
-void totp_face_lfs_setup(uint8_t watch_face_index, void ** context_ptr) {
- (void) watch_face_index;
- if (*context_ptr == NULL) {
- *context_ptr = malloc(sizeof(totp_lfs_state_t));
- }
-
-#if !(__EMSCRIPTEN__)
- if (num_totp_records == 0) {
- totp_face_lfs_read_file(TOTP_FILE);
- }
-#endif
-}
-
-static uint8_t *totp_face_lfs_get_file_secret(struct totp_record *record) {
- char buffer[BASE32_LEN(MAX_TOTP_SECRET_SIZE) + 1];
- int32_t file_secret_offset = record->file_secret_offset;
-
- /* TODO filesystem_read_line is quite inefficient. Consider writing a new function,
- * and keeping the file open?
- */
- if (!filesystem_read_line(TOTP_FILE, buffer, &file_secret_offset, record->file_secret_length + 1)) {
- /* Shouldn't happen at this point. Return current_secret, which is misleading but will not cause a crash. */
- printf("TOTP can't read expected secret from totp_uris.txt (failed readline)\n");
- return current_secret;
- }
- if (base32_decode((unsigned char *)buffer, current_secret) != record->secret_size) {
- printf("TOTP can't properly decode secret '%s' from totp_uris.txt; failed at offset %d; read to %ld\n", buffer, record->file_secret_offset, file_secret_offset);
- }
- return current_secret;
-}
-
-static void totp_face_set_record(totp_lfs_state_t *totp_state, int i) {
- struct totp_record *record;
-
- if (num_totp_records == 0 && i >= num_totp_records) {
- return;
- }
-
- totp_state->current_index = i;
- record = &totp_records[i];
-
- TOTP(
- totp_face_lfs_get_file_secret(record),
- record->secret_size,
- record->period,
- record->algorithm
- );
- totp_state->current_code = getCodeFromTimestamp(totp_state->timestamp);
- totp_state->steps = totp_state->timestamp / record->period;
-}
-
-void totp_face_lfs_activate(void *context) {
- memset(context, 0, sizeof(totp_lfs_state_t));
- totp_lfs_state_t *totp_state = (totp_lfs_state_t *)context;
-
-#if __EMSCRIPTEN__
- if (num_totp_records == 0) {
- // Doing this here rather than in setup makes things a bit more pleasant in the simulator, since there's no easy way to trigger
- // setup again after uploading the data.
- totp_face_lfs_read_file(TOTP_FILE);
- }
-#endif
-
- totp_state->timestamp = watch_utility_date_time_to_unix_time(watch_rtc_get_date_time(), movement_get_current_timezone_offset());
- totp_face_set_record(totp_state, 0);
-}
-
-static void totp_face_display(totp_lfs_state_t *totp_state) {
- uint8_t index = totp_state->current_index;
- char buf[14];
-
- if (num_totp_records == 0) {
- watch_display_string("No2F Codes", 0);
- return;
- }
-
- div_t result = div(totp_state->timestamp, totp_records[index].period);
- if (result.quot != totp_state->steps) {
- totp_state->current_code = getCodeFromTimestamp(totp_state->timestamp);
- totp_state->steps = result.quot;
- }
- uint8_t valid_for = totp_records[index].period - result.rem;
-
- sprintf(buf, "%c%c%2d%06lu", totp_records[index].label[0], totp_records[index].label[1], valid_for, totp_state->current_code);
-
- watch_display_string(buf, 0);
-}
-
-bool totp_face_lfs_loop(movement_event_t event, void *context) {
-
- totp_lfs_state_t *totp_state = (totp_lfs_state_t *)context;
-
- switch (event.event_type) {
- case EVENT_TICK:
- totp_state->timestamp++;
- totp_face_display(totp_state);
- break;
- case EVENT_ACTIVATE:
- totp_face_display(totp_state);
- break;
- case EVENT_TIMEOUT:
- movement_move_to_face(0);
- break;
- case EVENT_ALARM_BUTTON_UP:
- totp_face_set_record(totp_state, (totp_state->current_index + 1) % num_totp_records);
- totp_face_display(totp_state);
- break;
- case EVENT_LIGHT_BUTTON_UP:
- totp_face_set_record(totp_state, (totp_state->current_index + num_totp_records - 1) % num_totp_records);
- totp_face_display(totp_state);
- break;
- case EVENT_ALARM_BUTTON_DOWN:
- case EVENT_ALARM_LONG_PRESS:
- case EVENT_LIGHT_BUTTON_DOWN:
- break;
- case EVENT_LIGHT_LONG_PRESS:
- movement_illuminate_led();
- break;
- default:
- movement_default_loop_handler(event);
- break;
- }
-
- return true;
-}
-
-void totp_face_lfs_resign(void *context) {
- (void) context;
-}
+++ /dev/null
-/*
- * 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, and you
- * will only see errors if you use the simulator or view the serial console.
- *
- * 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(uint8_t watch_face_index, void ** context_ptr);
-void totp_face_lfs_activate(void *context);
-bool totp_face_lfs_loop(movement_event_t event, void *context);
-void totp_face_lfs_resign(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_
#include "periodic_table_face.h"
#include "squash_face.h"
#include "totp_face.h"
+#include "totp_lfs_face.h"
#include "tally_face.h"
#include "probability_face.h"
#include "ke_decimal_time_face.h"
./watch-faces/complication/days_since_face.c \
./watch-faces/complication/breathing_face.c \
./watch-faces/complication/squash_face.c \
- ./watch-faces/complication/totp_face.c \
+ ./watch-faces/complication/totp_lfs_face.c \
./watch-faces/complication/tally_face.c \
./watch-faces/complication/wordle_face.c \
./watch-faces/demo/all_segments_face.c \
--- /dev/null
+/*
+ * 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.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "TOTP.h"
+#include "base32.h"
+
+#include "watch.h"
+#include "watch_utility.h"
+#include "filesystem.h"
+
+#include "totp_lfs_face.h"
+
+#define MAX_TOTP_RECORDS 30
+#define MAX_TOTP_SECRET_SIZE 128
+#define TOTP_FILE "totp_uris.txt"
+
+const char* TOTP_URI_START = "otpauth://totp/";
+
+struct totp_record {
+ char label[4];
+ hmac_alg algorithm;
+ uint8_t period;
+ uint8_t secret_size;
+
+ union {
+ uint8_t *secret;
+ struct {
+ uint16_t file_secret_offset;
+ uint16_t file_secret_length;
+ };
+ };
+};
+
+/* This is used if we're not storing all the secrets but instead
+ * calculating them on demand. Avoids malloc in normal operation.
+ */
+static uint8_t current_secret[MAX_TOTP_SECRET_SIZE];
+
+static struct totp_record totp_records[MAX_TOTP_RECORDS];
+static uint8_t num_totp_records = 0;
+
+static void init_totp_record(struct totp_record *totp_record) {
+ totp_record->label[0] = 'A';
+ totp_record->label[1] = 'A';
+ totp_record->label[2] = 'A';
+ totp_record->label[3] = 0;
+ totp_record->algorithm = SHA1;
+ totp_record->period = 30;
+ totp_record->secret_size = 0;
+}
+
+static bool totp_lfs_face_read_param(struct totp_record *totp_record, char *param, char *value) {
+ if (!strcmp(param, "issuer")) {
+ if (value[0] == '\0') {
+ printf("TOTP issuer must be a non-empty string\n");
+ return false;
+ }
+ snprintf(totp_record->label, sizeof(totp_record->label), "%-3s", value);
+ } else if (!strcmp(param, "secret")) {
+ totp_record->file_secret_length = strlen(value);
+ if (UNBASE32_LEN(totp_record->file_secret_length) > MAX_TOTP_SECRET_SIZE) {
+ printf("TOTP secret too long: %s\n", value);
+ return false;
+ }
+ totp_record->secret_size = base32_decode((unsigned char *)value, current_secret);
+ if (totp_record->secret_size == 0) {
+ printf("TOTP can't decode secret: %s\n", value);
+ return false;
+ }
+ } else if (!strcmp(param, "digits")) {
+ if (!strcmp(param, "6")) {
+ printf("TOTP got %s, not 6 digits\n", value);
+ return false;
+ }
+ } else if (!strcmp(param, "period")) {
+ totp_record->period = atoi(value);
+ if (totp_record->period == 0) {
+ printf("TOTP invalid period %s\n", value);
+ return false;
+ }
+ } else if (!strcmp(param, "algorithm")) {
+ if (!strcmp(value, "SHA1")) {
+ totp_record->algorithm = SHA1;
+ }
+ else if (!strcmp(value, "SHA224")) {
+ totp_record->algorithm = SHA224;
+ }
+ else if (!strcmp(value, "SHA256")) {
+ totp_record->algorithm = SHA256;
+ }
+ else if (!strcmp(value, "SHA384")) {
+ totp_record->algorithm = SHA384;
+ }
+ else if (!strcmp(value, "SHA512")) {
+ totp_record->algorithm = SHA512;
+ }
+ else {
+ printf("TOTP ignored due to algorithm %s\n", value);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static void totp_lfs_face_read_file(char *filename) {
+ // For 'format' of file, see comment at top.
+ const size_t uri_start_len = strlen(TOTP_URI_START);
+
+ if (!filesystem_file_exists(filename)) {
+ printf("TOTP file error: %s\n", filename);
+ return;
+ }
+
+ char line[256];
+ int32_t offset = 0, old_offset = 0;
+ while (old_offset = offset, filesystem_read_line(filename, line, &offset, 255) && strlen(line)) {
+ if (num_totp_records == MAX_TOTP_RECORDS) {
+ printf("TOTP max records: %d\n", MAX_TOTP_RECORDS);
+ break;
+ }
+
+ // Check that it looks like a URI
+ if (strncmp(TOTP_URI_START, line, uri_start_len)) {
+ printf("TOTP invalid uri start: %s\n", line);
+ continue;
+ }
+
+ // Check that we can find a '?' (to start our parameters)
+ char *param;
+ char *param_saveptr = NULL;
+ char *params = strchr(line + uri_start_len, '?');
+ if (params == NULL) {
+ printf("TOTP no params: %s\n", line);
+ continue;
+ }
+
+ // Process the parameters and put them in the record
+ init_totp_record(&totp_records[num_totp_records]);
+ bool error = false;
+ param = strtok_r(params + 1, "&", ¶m_saveptr);
+ do {
+ char *param_middle = strchr(param, '=');
+ *param_middle = '\0';
+ if (totp_lfs_face_read_param(&totp_records[num_totp_records], param, param_middle + 1)) {
+ if (!strcmp(param, "secret")) {
+ totp_records[num_totp_records].file_secret_offset = old_offset + (param_middle + 1 - line);
+ }
+ } else {
+ error = true;
+ }
+ } while ((param = strtok_r(NULL, "&", ¶m_saveptr)));
+
+ if (error) {
+ totp_records[num_totp_records].secret_size = 0;
+ continue;
+ }
+
+ // If we found a probably valid TOTP record, keep it.
+ if (totp_records[num_totp_records].secret_size) {
+ num_totp_records += 1;
+ } else {
+ printf("TOTP missing secret: %s\n", line);
+ }
+ }
+}
+
+void totp_lfs_face_setup(uint8_t watch_face_index, void ** context_ptr) {
+ (void) watch_face_index;
+ if (*context_ptr == NULL) {
+ *context_ptr = malloc(sizeof(totp_lfs_state_t));
+ }
+
+#if !(__EMSCRIPTEN__)
+ if (num_totp_records == 0) {
+ totp_lfs_face_read_file(TOTP_FILE);
+ }
+#endif
+}
+
+static uint8_t *totp_lfs_face_get_file_secret(struct totp_record *record) {
+ char buffer[BASE32_LEN(MAX_TOTP_SECRET_SIZE) + 1];
+ int32_t file_secret_offset = record->file_secret_offset;
+
+ /* TODO filesystem_read_line is quite inefficient. Consider writing a new function,
+ * and keeping the file open?
+ */
+ if (!filesystem_read_line(TOTP_FILE, buffer, &file_secret_offset, record->file_secret_length + 1)) {
+ /* Shouldn't happen at this point. Return current_secret, which is misleading but will not cause a crash. */
+ printf("TOTP can't read expected secret from totp_uris.txt (failed readline)\n");
+ return current_secret;
+ }
+ if (base32_decode((unsigned char *)buffer, current_secret) != record->secret_size) {
+ printf("TOTP can't properly decode secret '%s' from totp_uris.txt; failed at offset %d; read to %ld\n", buffer, record->file_secret_offset, file_secret_offset);
+ }
+ return current_secret;
+}
+
+static void totp_face_set_record(totp_lfs_state_t *totp_state, int i) {
+ struct totp_record *record;
+
+ if (num_totp_records == 0 && i >= num_totp_records) {
+ return;
+ }
+
+ totp_state->current_index = i;
+ record = &totp_records[i];
+
+ TOTP(
+ totp_lfs_face_get_file_secret(record),
+ record->secret_size,
+ record->period,
+ record->algorithm
+ );
+ totp_state->current_code = getCodeFromTimestamp(totp_state->timestamp);
+ totp_state->steps = totp_state->timestamp / record->period;
+}
+
+void totp_lfs_face_activate(void *context) {
+ memset(context, 0, sizeof(totp_lfs_state_t));
+ totp_lfs_state_t *totp_state = (totp_lfs_state_t *)context;
+
+#if __EMSCRIPTEN__
+ if (num_totp_records == 0) {
+ // Doing this here rather than in setup makes things a bit more pleasant in the simulator, since there's no easy way to trigger
+ // setup again after uploading the data.
+ totp_lfs_face_read_file(TOTP_FILE);
+ }
+#endif
+
+ totp_state->timestamp = watch_utility_date_time_to_unix_time(movement_get_utc_date_time(), 0);
+ totp_face_set_record(totp_state, 0);
+}
+
+static void totp_face_display(totp_lfs_state_t *totp_state) {
+ uint8_t index = totp_state->current_index;
+ char buf[7];
+
+ if (num_totp_records == 0) {
+ watch_display_text(WATCH_POSITION_FULL, "No2F Codes");
+ return;
+ }
+
+ div_t result = div(totp_state->timestamp, totp_records[index].period);
+ if (result.quot != totp_state->steps) {
+ totp_state->current_code = getCodeFromTimestamp(totp_state->timestamp);
+ totp_state->steps = result.quot;
+ }
+ uint8_t valid_for = totp_records[index].period - result.rem;
+
+ watch_display_text_with_fallback(WATCH_POSITION_TOP_LEFT, totp_records[index].label, totp_records[index].label);
+ sprintf(buf, "%2d", valid_for);
+ watch_display_text_with_fallback(WATCH_POSITION_TOP_RIGHT, buf, buf);
+ sprintf(buf, "%06lu", totp_state->current_code);
+ watch_display_text_with_fallback(WATCH_POSITION_BOTTOM, buf, buf);
+}
+
+bool totp_lfs_face_loop(movement_event_t event, void *context) {
+
+ totp_lfs_state_t *totp_state = (totp_lfs_state_t *)context;
+
+ switch (event.event_type) {
+ case EVENT_TICK:
+ totp_state->timestamp++;
+ totp_face_display(totp_state);
+ break;
+ case EVENT_ACTIVATE:
+ totp_face_display(totp_state);
+ break;
+ case EVENT_TIMEOUT:
+ movement_move_to_face(0);
+ break;
+ case EVENT_ALARM_BUTTON_UP:
+ totp_face_set_record(totp_state, (totp_state->current_index + 1) % num_totp_records);
+ totp_face_display(totp_state);
+ break;
+ case EVENT_LIGHT_BUTTON_UP:
+ totp_face_set_record(totp_state, (totp_state->current_index + num_totp_records - 1) % num_totp_records);
+ totp_face_display(totp_state);
+ break;
+ case EVENT_ALARM_BUTTON_DOWN:
+ case EVENT_ALARM_LONG_PRESS:
+ case EVENT_LIGHT_BUTTON_DOWN:
+ break;
+ case EVENT_LIGHT_LONG_PRESS:
+ movement_illuminate_led();
+ break;
+ default:
+ movement_default_loop_handler(event);
+ break;
+ }
+
+ return true;
+}
+
+void totp_lfs_face_resign(void *context) {
+ (void) context;
+}
--- /dev/null
+/*
+ * 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, and you
+ * will only see errors if you use the simulator or view the serial console.
+ *
+ * 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_lfs_face_setup(uint8_t watch_face_index, void ** context_ptr);
+void totp_lfs_face_activate(void *context);
+bool totp_lfs_face_loop(movement_event_t event, void *context);
+void totp_lfs_face_resign(void *context);
+
+#define totp_lfs_face ((const watch_face_t){ \
+ totp_lfs_face_setup, \
+ totp_lfs_face_activate, \
+ totp_lfs_face_loop, \
+ totp_lfs_face_resign, \
+ NULL, \
+})
+
+#endif // TOTP_FACE_LFS_H_
projects / sensor-watch.git / commitdiff