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35edb766 L |
1 | /* |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
b51d2360 | 4 | * SPDX-License-Identifier: GPL-2.0 |
35edb766 L |
5 | */ |
6 | ||
228b1c5f | 7 | #include "env.h" |
d684c216 L |
8 | #include <avr/eeprom.h> |
9 | ||
10 | #include "config.h" | |
11 | #include "debug.h" | |
12 | #include "xmalloc.h" | |
13 | #include "crc.h" | |
d684c216 L |
14 | |
15 | ||
323398b1 L |
16 | #define ENV_SIZE (CONFIG_ENV_SIZE - sizeof(uint16_t) -1) |
17 | #define ACTIVE_FLAG 1 | |
18 | #define OBSOLETE_FLAG 0 | |
d684c216 | 19 | |
7e24905c L |
20 | #define ENVLIST_DELETE (1<<0) |
21 | ||
d684c216 | 22 | |
534e1dfc L |
23 | /* |
24 | * Default Environment | |
25 | */ | |
1da3acc4 L |
26 | |
27 | #define DELIM "\0" | |
28 | ||
534e1dfc | 29 | const FLASH char default_env[] = { |
c0abd68b L |
30 | ENV_BAUDRATE "=" "115200" DELIM |
31 | ENV_BOOTDELAY "=" "3" DELIM | |
b51d2360 | 32 | ENV_BOOTCMD "=" "pin ${pins}; loadcpm3; go ${startaddress}" DELIM |
057817cb | 33 | ENV_CPM3_SYSFILE "=" CONFIG_CPM3_SYSFILE DELIM |
c0abd68b L |
34 | ENV_PINALIAS "=" "0:PG5,1:PG4,2:PB4,3:PB5,4:PB6,5:PB7," |
35 | "6:PG3,7:PG2,8:PG1,9:PG0,10:PE7" DELIM | |
36 | ENV_STARTADDRESS "=" "0" DELIM | |
b51d2360 | 37 | "pins" "=" "2,8 low 9 high 3 2" DELIM |
534e1dfc L |
38 | DELIM |
39 | }; | |
40 | ||
c0abd68b | 41 | |
1da3acc4 | 42 | /* EEPROM storage */ |
d684c216 L |
43 | typedef struct environment_s { |
44 | uint16_t crc; /* CRC16 over data bytes */ | |
323398b1 | 45 | uint8_t flags; /* active/obsolete flags */ |
d684c216 L |
46 | char data[ENV_SIZE]; /* Environment data */ |
47 | } env_t; | |
48 | ||
49 | ||
1da3acc4 | 50 | /* */ |
d684c216 | 51 | typedef struct env_item_s { |
55027f3b | 52 | char * envvar; |
d684c216 L |
53 | } env_item_t; |
54 | ||
1da3acc4 | 55 | |
323398b1 | 56 | static uint8_t env_valid; |
d684c216 L |
57 | static env_item_t env_list[CONFIG_ENVVAR_MAX]; |
58 | static int entrycount; | |
59 | ||
60 | ||
1da3acc4 L |
61 | static |
62 | char env_get_char(uint16_t index) | |
d684c216 L |
63 | { |
64 | unsigned int off = CONFIG_ENV_OFFSET; | |
55027f3b | 65 | char ret; |
d684c216 | 66 | |
55027f3b L |
67 | switch (env_valid) { |
68 | case 2: | |
69 | off += CONFIG_ENV_SIZE; | |
70 | case 1: | |
71 | ret = (char) eeprom_read_byte((const uint8_t *)off + index + | |
d684c216 | 72 | offsetof(env_t, data)); |
55027f3b | 73 | break; |
d684c216 | 74 | |
55027f3b L |
75 | default: |
76 | ret = default_env[index]; | |
d684c216 | 77 | } |
d684c216 | 78 | |
55027f3b | 79 | return ret; |
d684c216 L |
80 | } |
81 | ||
d684c216 | 82 | |
04cffff0 L |
83 | static const FLASH char *comp_key; |
84 | ||
d684c216 L |
85 | static |
86 | int comp_env_items(const void *m1, const void *m2) | |
87 | { | |
d684c216 L |
88 | env_item_t *ep1 = (env_item_t *) m1; |
89 | env_item_t *ep2 = (env_item_t *) m2; | |
7e24905c | 90 | |
04cffff0 L |
91 | if (ep1 == NULL) |
92 | return - strcmp_P(ep2->envvar, comp_key); | |
93 | else | |
94 | return strcmp(ep1->envvar, ep2->envvar); | |
d684c216 L |
95 | } |
96 | ||
1da3acc4 | 97 | |
7e24905c L |
98 | env_item_t *envlist_search(const MEMX char *name) |
99 | { | |
7e24905c | 100 | #ifdef __MEMX |
7e24905c | 101 | if (__builtin_avr_flash_segment(name) != -1) { |
04cffff0 L |
102 | comp_key = name; |
103 | return bsearch(0, env_list, entrycount, | |
104 | sizeof(env_item_t), comp_env_items); | |
105 | } else { | |
106 | ||
107 | env_item_t e; | |
108 | e.envvar = (char *) name; | |
109 | ||
110 | return bsearch(&e, env_list, entrycount, | |
111 | sizeof(env_item_t), comp_env_items); | |
7e24905c | 112 | } |
04cffff0 L |
113 | #else |
114 | env_item_t e; | |
115 | e.envvar = (char *) name; | |
7e24905c | 116 | |
55027f3b L |
117 | return bsearch(&e, env_list, entrycount, |
118 | sizeof(env_item_t), comp_env_items); | |
04cffff0 | 119 | #endif /* __MEMX */ |
7e24905c L |
120 | } |
121 | ||
122 | ||
123 | static | |
124 | env_item_t *envlist_enter(env_item_t *e) | |
125 | { | |
7e24905c L |
126 | const size_t size = sizeof(env_item_t); |
127 | env_item_t *ep; | |
128 | ||
55027f3b L |
129 | ep = bsearch(e, env_list, entrycount, |
130 | size, comp_env_items); | |
7e24905c L |
131 | |
132 | if (ep == NULL) { | |
133 | if (entrycount < CONFIG_ENVVAR_MAX) { | |
134 | ||
135 | env_list[entrycount++] = *e; | |
136 | qsort(env_list, entrycount, size, comp_env_items); | |
55027f3b L |
137 | ep = bsearch(e, env_list, entrycount, |
138 | size, comp_env_items); | |
7e24905c L |
139 | } |
140 | } else { | |
55027f3b L |
141 | free(ep->envvar); |
142 | ep->envvar = e->envvar; | |
7e24905c L |
143 | } |
144 | ||
145 | return ep; | |
146 | } | |
147 | ||
148 | ||
149 | static | |
150 | int env_item_delete(env_item_t *ep) | |
151 | { | |
152 | if (entrycount == 0) | |
153 | return -1; | |
55027f3b L |
154 | |
155 | free(ep->envvar); | |
7e24905c L |
156 | |
157 | entrycount--; | |
158 | size_t size = sizeof(env_item_t); | |
159 | memmove(ep, ep + 1, (env_list - ep)*size + entrycount*size); | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | static | |
04cffff0 | 165 | int envlist_delete(const MEMX char *name) |
7e24905c | 166 | { |
04cffff0 | 167 | env_item_t *ep = envlist_search(name); |
7e24905c L |
168 | |
169 | if (ep != NULL) | |
170 | return env_item_delete(ep); | |
171 | ||
172 | return 1; | |
173 | } | |
174 | ||
175 | ||
7e24905c L |
176 | |
177 | static | |
178 | int envlist_import(uint8_t flags) | |
d684c216 | 179 | { |
55027f3b L |
180 | uint16_t index; |
181 | ||
182 | int len; | |
1da3acc4 | 183 | env_item_t e; |
55027f3b L |
184 | char *np, c; |
185 | uint_fast8_t ef; | |
7e24905c L |
186 | |
187 | if ((flags & ENVLIST_DELETE) != 0) | |
188 | while (entrycount != 0) | |
189 | env_item_delete(&env_list[entrycount-1]); | |
190 | ||
55027f3b L |
191 | for (index = 0; env_get_char(index) != '\0'; ) { |
192 | for (len = 0; env_get_char(index + len) != '\0'; ++len) { | |
193 | if ((index + len) >= ENV_SIZE) | |
194 | return -1; | |
1da3acc4 | 195 | } |
d684c216 | 196 | |
55027f3b L |
197 | np = (char *) xmalloc(len+1); |
198 | if (np == NULL) { | |
199 | printf_P(PSTR("## Can't malloc %d bytes\n"), len+1); | |
200 | return 1; | |
d684c216 | 201 | } |
55027f3b L |
202 | e.envvar = np; |
203 | ef = 0; | |
204 | while ((c = env_get_char(index++)) != '\0') { | |
205 | if (!ef && (c == '=')) { | |
206 | *np = '\0'; | |
207 | ef = 1; | |
208 | } else | |
209 | *np = c; | |
210 | np++; | |
211 | } | |
212 | *np = '\0'; | |
213 | envlist_enter(&e); | |
d684c216 | 214 | } |
d684c216 | 215 | |
55027f3b | 216 | |
1da3acc4 L |
217 | return 0; |
218 | } | |
d684c216 L |
219 | |
220 | ||
1da3acc4 L |
221 | static |
222 | uint16_t env_crc(uint16_t data_offset) | |
323398b1 | 223 | { |
7e24905c | 224 | uint16_t crc; |
1da3acc4 L |
225 | uint16_t i; |
226 | char c, c0; | |
323398b1 | 227 | |
1da3acc4 L |
228 | crc = 0xffff; |
229 | c = 0xff; | |
230 | for (i = 0; !(c == 0 && c0 == 0) && i < ENV_SIZE; i++) | |
231 | { | |
7e24905c | 232 | c0 = c; |
1da3acc4 L |
233 | c = eeprom_read_byte((const uint8_t *) data_offset + i); |
234 | crc = crc16(crc, c); | |
323398b1 | 235 | } |
1da3acc4 L |
236 | return crc ; |
237 | } | |
323398b1 L |
238 | |
239 | ||
1da3acc4 L |
240 | /** |
241 | * return valid env | |
323398b1 | 242 | */ |
1da3acc4 L |
243 | static |
244 | int env_check_valid(void) | |
245 | { | |
246 | const uint16_t offset[2] = {CONFIG_ENV_OFFSET, | |
247 | CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE}; | |
248 | uint_fast8_t flags[2], crc_ok[2]; | |
249 | int rc; | |
250 | ||
251 | /* read FLAGS */ | |
252 | flags[0] = eeprom_read_byte ((uint8_t *) offset[0] + | |
253 | offsetof(env_t, flags)); | |
254 | flags[1] = eeprom_read_byte ((uint8_t *) offset[1] + | |
255 | offsetof(env_t, flags)); | |
256 | ||
257 | /* check CRC */ | |
258 | crc_ok[0] = ( | |
259 | eeprom_read_word((uint16_t *) offset[0] + | |
260 | offsetof(env_t, crc)) | |
261 | == env_crc(offset[0] + offsetof(env_t, data)) | |
262 | ); | |
263 | crc_ok[1] = ( | |
264 | eeprom_read_word((uint16_t *) offset[1] + | |
265 | offsetof(env_t, crc)) | |
266 | == env_crc(offset[1] + offsetof(env_t, data)) | |
267 | ); | |
323398b1 | 268 | |
1da3acc4 L |
269 | if (!crc_ok[0] && !crc_ok[1]) { |
270 | rc = 0; | |
323398b1 | 271 | |
1da3acc4 L |
272 | } else if (crc_ok[0] && !crc_ok[1]) { |
273 | rc = 1; | |
274 | } else if (!crc_ok[0] && crc_ok[1]) { | |
275 | rc = 2; | |
276 | } else { | |
277 | /* both ok - check serial */ | |
278 | #if 1 | |
279 | if (flags[1] == ACTIVE_FLAG && flags[0] != ACTIVE_FLAG) | |
280 | rc = 2; | |
281 | else if (flags[1] == OBSOLETE_FLAG && flags[0] == 0xFF) | |
282 | rc = 2; | |
283 | else | |
284 | rc = 1; | |
285 | #else | |
286 | if (flags[0] == ACTIVE_FLAG && flags[1] == OBSOLETE_FLAG) | |
287 | rc = 1; | |
288 | else if (flags[0] == OBSOLETE_FLAG && flags[1] == ACTIVE_FLAG) | |
289 | rc = 2; | |
290 | else if (flags[0] == 0xFF && flags[1] == 0) | |
291 | rc = 2; | |
292 | else if (flags[1] == 0xFF && flags[0] == 0) | |
293 | rc = 1; | |
294 | else /* flags are equal - almost impossible */ | |
295 | rc = 1; | |
296 | #endif | |
323398b1 | 297 | } |
7e24905c | 298 | |
1da3acc4 L |
299 | return rc; |
300 | } | |
323398b1 L |
301 | |
302 | ||
1da3acc4 | 303 | int env_init(void) |
323398b1 | 304 | { |
1da3acc4 L |
305 | env_valid = env_check_valid(); |
306 | if (env_valid == 0) { | |
55027f3b | 307 | printf_P(PSTR("*** Warning - bad CRC, " |
1da3acc4 | 308 | "using default environment\n\n")); |
d684c216 | 309 | } |
55027f3b | 310 | |
7e24905c L |
311 | envlist_import(ENVLIST_DELETE); |
312 | return 0; | |
323398b1 | 313 | } |
d684c216 | 314 | |
1da3acc4 | 315 | |
bddc7e77 | 316 | char *getenv_str(const MEMX char *name) |
d684c216 L |
317 | { |
318 | env_item_t *ep; | |
319 | char *ret = NULL; | |
320 | ||
55027f3b | 321 | ep = envlist_search(name); |
d684c216 | 322 | if (ep != NULL) |
55027f3b | 323 | ret = ep->envvar + strlen(ep->envvar) +1; |
d684c216 L |
324 | return ret; |
325 | } | |
326 | ||
1da3acc4 L |
327 | static |
328 | int env_item_save(env_item_t *ep, uint16_t offset, int space_left) | |
323398b1 | 329 | { |
55027f3b L |
330 | int nlen, vlen; |
331 | char *var = ep->envvar; | |
323398b1 | 332 | |
55027f3b L |
333 | nlen = strlen(var); |
334 | if (nlen == 0) | |
1da3acc4 | 335 | return 0; |
55027f3b L |
336 | vlen = strlen(var + nlen + 1); |
337 | if (vlen == 0) | |
338 | return 0; | |
339 | if (nlen + vlen + 2 > space_left) | |
1da3acc4 | 340 | return 0; |
7e24905c | 341 | |
55027f3b L |
342 | eeprom_update_block(var, (uint8_t *) offset, nlen); |
343 | offset += nlen; | |
344 | eeprom_update_byte((uint8_t *) offset++, '='); | |
345 | eeprom_update_block(var + nlen +1, (uint8_t *) offset, vlen+1); | |
346 | ||
347 | return nlen + vlen + 2; | |
7e24905c | 348 | } |
1da3acc4 | 349 | |
323398b1 | 350 | |
1da3acc4 | 351 | static |
d684c216 L |
352 | int saveenv(void) |
353 | { | |
323398b1 L |
354 | unsigned int off = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; |
355 | unsigned int off_red = CONFIG_ENV_OFFSET; | |
356 | unsigned int pos; | |
357 | int len, left; | |
358 | uint16_t crc; | |
359 | int rc = 0; | |
d684c216 | 360 | |
323398b1 L |
361 | if (env_valid == 2) { |
362 | off = CONFIG_ENV_OFFSET; | |
363 | off_red = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
364 | } | |
365 | ||
7e24905c | 366 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), 0xff); |
d684c216 | 367 | |
323398b1 L |
368 | pos = off + offsetof(env_t, data); |
369 | left = ENV_SIZE - 1; | |
370 | for (int i = 0 ; i < entrycount; i++) { | |
371 | len = env_item_save(&env_list[i], pos, left); | |
372 | if (len == 0) { | |
373 | return 1; | |
374 | } | |
375 | pos += len; | |
376 | left -= len; | |
377 | } | |
378 | /* terminate list */ | |
379 | eeprom_update_byte((uint8_t *) pos, 0); | |
380 | crc = env_crc(off + offsetof(env_t, data)); | |
381 | eeprom_update_word((uint16_t *) off + offsetof(env_t, crc), crc); | |
7e24905c | 382 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), |
323398b1 L |
383 | ACTIVE_FLAG); |
384 | ||
385 | if (rc == 0) { | |
7e24905c | 386 | eeprom_update_byte((uint8_t *) off_red + offsetof(env_t, flags), |
323398b1 L |
387 | OBSOLETE_FLAG); |
388 | env_valid = (env_valid == 2) ? 1 : 2; | |
323398b1 | 389 | } |
7e24905c | 390 | |
d684c216 L |
391 | return rc; |
392 | } | |
393 | ||
d684c216 | 394 | |
1da3acc4 L |
395 | static |
396 | int env_item_print(env_item_t *ep) | |
d684c216 | 397 | { |
1da3acc4 | 398 | int len; |
55027f3b L |
399 | char *ev = ep->envvar; |
400 | ||
401 | len = printf_P(PSTR("%s="), ev); | |
402 | len += printf_P(PSTR("%s\n"), ev + len); | |
1da3acc4 L |
403 | |
404 | return len; | |
7e24905c | 405 | } |
323398b1 L |
406 | |
407 | ||
d684c216 L |
408 | /* |
409 | * Command interface: print one or all environment variables | |
410 | * | |
411 | * Returns -1 in case of error, or length of printed string | |
412 | */ | |
7e24905c | 413 | static |
fc30b18e | 414 | int env_print(const MEMX char *name) |
d684c216 L |
415 | { |
416 | int len = -1; | |
417 | ||
418 | if (name) { /* print a single name */ | |
7e24905c | 419 | |
d684c216 L |
420 | env_item_t *ep = envlist_search(name); |
421 | if (ep != NULL) | |
422 | len = env_item_print(ep); | |
423 | ||
424 | } else { /* print whole list */ | |
425 | len = 0; | |
426 | for (int i = 0 ; i < entrycount; i++) { | |
427 | len += env_item_print(&env_list[i]); | |
428 | } | |
429 | } | |
430 | return len; | |
431 | } | |
432 | ||
1da3acc4 | 433 | |
72f58822 L |
434 | /** |
435 | * Set or delete environment variable | |
436 | * | |
d684c216 L |
437 | * Set a new environment variable, |
438 | * or replace or delete an existing one. | |
72f58822 L |
439 | * |
440 | * @param flag (not used) | |
441 | * @param argc | |
442 | * @param argv[1] Environment variable to set or delete | |
443 | * if no more args | |
444 | * @param argv[2] ... Value to set it to | |
445 | * | |
446 | * @return 0 if ok, 1 on error | |
d684c216 | 447 | */ |
1da3acc4 | 448 | static |
93ea25f2 | 449 | command_ret_t _do_env_set(uint_fast8_t flag, int argc, char * const argv[]) |
d684c216 | 450 | { |
72f58822 | 451 | int i, len; |
55027f3b | 452 | char *name, *value, *valp, *p; |
d684c216 L |
453 | env_item_t e, *ep; |
454 | ||
455 | (void) flag; | |
d684c216 L |
456 | |
457 | name = argv[1]; | |
458 | value = argv[2]; | |
459 | ||
460 | if (strchr(name, '=')) { | |
461 | printf_P(PSTR("## Error: illegal character '='" | |
462 | "in variable name \"%s\"\n"), name); | |
d0581f88 | 463 | return CMD_RET_FAILURE; |
d684c216 | 464 | } |
55027f3b L |
465 | len = strlen(name); |
466 | if (len > CONFIG_SYS_ENV_NAMELEN) { | |
d684c216 L |
467 | printf_P(PSTR("## Error: Variable name \"%s\" too long. " |
468 | "(max %d characters)\n"), name, CONFIG_SYS_ENV_NAMELEN); | |
d0581f88 | 469 | return CMD_RET_FAILURE; |
d684c216 L |
470 | } |
471 | /* | |
472 | env_id++; | |
473 | */ | |
474 | /* Delete only ? */ | |
475 | if (argc < 3 || argv[2] == NULL) { | |
476 | int rc = envlist_delete(name); | |
d0581f88 | 477 | return rc ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
d684c216 L |
478 | } |
479 | ||
480 | /* | |
481 | * Insert / replace new value | |
482 | */ | |
55027f3b | 483 | for (i = 2, len += 1; i < argc; ++i) |
d684c216 L |
484 | len += strlen(argv[i]) + 1; |
485 | ||
486 | value = xmalloc(len); | |
487 | if (value == NULL) { | |
488 | printf_P(PSTR("## Can't malloc %d bytes\n"), len); | |
d0581f88 | 489 | return CMD_RET_FAILURE; |
d684c216 | 490 | } |
55027f3b L |
491 | strcpy(value, name); |
492 | valp = value + strlen(name) + 1; | |
493 | for (i = 2, p = valp; i < argc; ++i) { | |
d684c216 L |
494 | char *v = argv[i]; |
495 | ||
55027f3b | 496 | while ((*p++ = *v++) != '\0') |
d684c216 | 497 | ; |
55027f3b | 498 | *(p - 1) = ' '; |
d684c216 | 499 | } |
55027f3b L |
500 | if (p != valp) |
501 | *--p = '\0'; | |
d684c216 | 502 | |
55027f3b | 503 | e.envvar = value; |
d684c216 L |
504 | ep = envlist_enter(&e); |
505 | if (!ep) { | |
506 | printf_P(PSTR("## Error inserting \"%s\" variable.\n"), | |
507 | name); | |
d0581f88 | 508 | return CMD_RET_FAILURE; |
d684c216 L |
509 | } |
510 | ||
d0581f88 | 511 | return CMD_RET_SUCCESS; |
d684c216 L |
512 | } |
513 | ||
72f58822 L |
514 | /** |
515 | * Set an environment variable | |
516 | * | |
517 | * @param varname Environment variable to set | |
518 | * @param varvalue Value to set it to | |
519 | * @return 0 if ok, 1 on error | |
520 | */ | |
1da3acc4 | 521 | static |
c0abd68b | 522 | int setenv(const MEMX char *varname, const char *varvalue) |
d684c216 | 523 | { |
c0abd68b L |
524 | int rc; |
525 | ||
526 | #ifdef __MEMX | |
527 | char *tmpname = NULL; | |
528 | if (__builtin_avr_flash_segment(varname) != -1) { | |
529 | tmpname = malloc(strlen_P(varname)+1); | |
530 | if (tmpname == NULL) { | |
531 | printf_P(PSTR("setenv: Out of Memory!\n")); | |
532 | return 1; | |
533 | } | |
534 | strcpy_P(tmpname, varname); | |
535 | } else | |
536 | tmpname = (char *) varname; | |
537 | #endif | |
538 | ||
539 | const char * const argv[3] = { NULL, tmpname, varvalue }; | |
d684c216 L |
540 | int argc = 3; |
541 | ||
542 | if (varvalue == NULL || varvalue[0] == '\0') | |
543 | --argc; | |
7e24905c | 544 | |
c0abd68b L |
545 | rc = (int) _do_env_set(0, argc, (char * const *)argv); |
546 | ||
547 | #ifdef __MEMX | |
548 | free(tmpname); | |
549 | #endif | |
550 | return rc; | |
d684c216 L |
551 | } |
552 | ||
d684c216 L |
553 | /** |
554 | * Set an environment variable to an integer value | |
555 | * | |
f76ca346 L |
556 | * @param name Environment variable to set |
557 | * @param value Value to set it to | |
558 | * @param radix Base | |
d684c216 L |
559 | * @return 0 if ok, 1 on error |
560 | */ | |
f76ca346 L |
561 | static |
562 | int setenv_intval(const MEMX char *name, unsigned long value, int radix) | |
d684c216 | 563 | { |
f76ca346 | 564 | char buf[11]; |
d684c216 | 565 | |
f76ca346 | 566 | ultoa(value, buf, radix); |
d684c216 | 567 | |
f76ca346 L |
568 | return setenv(name, buf); |
569 | } | |
d684c216 L |
570 | |
571 | /** | |
f76ca346 | 572 | * Set an environment variable to a decimal integer value |
d684c216 | 573 | * |
f76ca346 L |
574 | * @param name Environment variable to set |
575 | * @param value Value to set it to | |
d684c216 L |
576 | * @return 0 if ok, 1 on error |
577 | */ | |
f76ca346 | 578 | int setenv_ulong(const MEMX char *name, unsigned long value) |
d684c216 | 579 | { |
f76ca346 L |
580 | return setenv_intval(name, value, 10); |
581 | } | |
582 | ||
d684c216 | 583 | |
f76ca346 L |
584 | /** |
585 | * Set an environment variable to a value in hex | |
586 | * | |
587 | * @param name Environment variable to set | |
588 | * @param value Value to set it to | |
589 | * @return 0 if ok, 1 on error | |
590 | */ | |
591 | int setenv_hex(const MEMX char *name, unsigned long value) | |
592 | { | |
593 | return setenv_intval(name, value, 16); | |
d684c216 L |
594 | } |
595 | ||
35e9ec0c | 596 | |
72f58822 | 597 | /** |
35e9ec0c | 598 | * Decode the integer value of an environment variable and return it. |
72f58822 | 599 | * |
35e9ec0c L |
600 | * @param name Name of environemnt variable |
601 | * @param base Number base to use (normally 10, or 16 for hex) | |
602 | * @param default_val Default value to return if the variable is not | |
603 | * found | |
604 | * @return the decoded value, or default_val if not found | |
72f58822 | 605 | */ |
fc30b18e | 606 | unsigned long getenv_ulong(const MEMX char *name, int base, unsigned long default_val) |
d684c216 | 607 | { |
d684c216 | 608 | unsigned long value; |
35e9ec0c L |
609 | char *vp, *endp; |
610 | ||
611 | env_item_t *ep = envlist_search(name); | |
d684c216 | 612 | |
35e9ec0c | 613 | if (ep != NULL ) { |
55027f3b L |
614 | vp = ep->envvar + strlen(ep->envvar) +1; |
615 | value = strtoul(vp, &endp, base); | |
616 | if (endp != vp) | |
617 | return value; | |
35e9ec0c | 618 | } |
d684c216 | 619 | |
35e9ec0c | 620 | return default_val; |
d684c216 L |
621 | } |
622 | ||
35e9ec0c | 623 | |
be84a704 L |
624 | /* |
625 | * Read an environment variable as a boolean | |
626 | */ | |
627 | bool getenv_yesno(const MEMX char *name) | |
628 | { | |
bddc7e77 | 629 | char *s = getenv_str(name); |
be84a704 L |
630 | |
631 | if (s == NULL) | |
632 | return false; | |
633 | ||
634 | return strchr_P(PSTR("1yYtT"), *s) != NULL; | |
635 | ||
636 | /* | |
637 | return *s == '1' || *s == 'y' || *s == 'Y' || *s == 't' || *s == 'T' ? | |
638 | 1 : 0; | |
639 | */ | |
640 | } | |
641 | ||
93ea25f2 | 642 | command_ret_t do_env_print(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
f76ca346 L |
643 | { |
644 | command_ret_t rc = CMD_RET_SUCCESS; | |
645 | ||
646 | (void) cmdtp; (void) flag; | |
647 | ||
648 | if (argc == 1) { | |
649 | /* print all env vars */ | |
650 | int size = env_print(NULL); | |
651 | if (size < 0) | |
652 | return CMD_RET_FAILURE; | |
653 | printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), | |
654 | size, ENV_SIZE); | |
655 | return CMD_RET_SUCCESS; | |
656 | } | |
657 | ||
658 | /* print selected env vars */ | |
659 | for (int i = 1; i < argc; ++i) { | |
660 | int rc = env_print(argv[i]); | |
661 | if (rc < 0) { | |
662 | printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[i]); | |
663 | rc = CMD_RET_FAILURE; | |
664 | } | |
665 | } | |
666 | ||
667 | return rc; | |
668 | } | |
669 | ||
670 | ||
93ea25f2 | 671 | command_ret_t do_env_set(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
d684c216 L |
672 | { |
673 | (void) cmdtp; | |
674 | ||
675 | if (argc < 2) | |
676 | return CMD_RET_USAGE; | |
677 | ||
678 | return _do_env_set(flag, argc, argv); | |
679 | } | |
680 | ||
681 | ||
93ea25f2 | 682 | command_ret_t do_env_default(cmd_tbl_t *cmdtp, uint_fast8_t flag, |
7e24905c L |
683 | int argc, char * const argv[]) |
684 | { | |
685 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
686 | ||
55027f3b L |
687 | uint8_t tmp = env_valid; |
688 | env_valid = 0; | |
689 | ||
7e24905c | 690 | /* Reset the whole environment */ |
55027f3b | 691 | printf_P(PSTR("## Resetting to default environment\n")); |
7e24905c L |
692 | envlist_import(ENVLIST_DELETE); |
693 | ||
55027f3b L |
694 | env_valid = tmp; |
695 | ||
7e24905c L |
696 | return CMD_RET_SUCCESS; |
697 | } | |
698 | ||
55027f3b | 699 | |
93ea25f2 | 700 | command_ret_t do_env_save(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
323398b1 L |
701 | { |
702 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
703 | ||
704 | printf_P(PSTR("Saving Environment ...\n")); | |
d0581f88 | 705 | return saveenv() ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
323398b1 L |
706 | } |
707 | ||
55027f3b | 708 | |
7e24905c | 709 | #if defined(CONFIG_AUTO_COMPLETE) |
d684c216 L |
710 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) |
711 | { | |
712 | ENTRY *match; | |
713 | int found, idx; | |
714 | ||
715 | idx = 0; | |
716 | found = 0; | |
717 | cmdv[0] = NULL; | |
718 | ||
719 | while ((idx = hmatch_r(var, idx, &match, &env_htab))) { | |
720 | int vallen = strlen(match->key) + 1; | |
721 | ||
722 | if (found >= maxv - 2 || bufsz < vallen) | |
723 | break; | |
724 | ||
725 | cmdv[found++] = buf; | |
726 | memcpy(buf, match->key, vallen); | |
727 | buf += vallen; | |
728 | bufsz -= vallen; | |
729 | } | |
730 | ||
731 | qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar); | |
732 | ||
733 | if (idx) | |
734 | cmdv[found++] = "..."; | |
735 | ||
736 | cmdv[found] = NULL; | |
737 | return found; | |
738 | } | |
739 | #endif |