]>
Commit | Line | Data |
---|---|---|
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" | |
d684c216 | 12 | #include "crc.h" |
d684c216 L |
13 | |
14 | ||
323398b1 L |
15 | #define ENV_SIZE (CONFIG_ENV_SIZE - sizeof(uint16_t) -1) |
16 | #define ACTIVE_FLAG 1 | |
17 | #define OBSOLETE_FLAG 0 | |
d684c216 | 18 | |
7e24905c L |
19 | #define ENVLIST_DELETE (1<<0) |
20 | ||
d684c216 | 21 | |
534e1dfc L |
22 | /* |
23 | * Default Environment | |
24 | */ | |
1da3acc4 L |
25 | |
26 | #define DELIM "\0" | |
27 | ||
534e1dfc | 28 | const FLASH char default_env[] = { |
c0abd68b L |
29 | ENV_BAUDRATE "=" "115200" DELIM |
30 | ENV_BOOTDELAY "=" "3" DELIM | |
b51d2360 | 31 | ENV_BOOTCMD "=" "pin ${pins}; loadcpm3; go ${startaddress}" DELIM |
057817cb | 32 | ENV_CPM3_SYSFILE "=" CONFIG_CPM3_SYSFILE DELIM |
c0abd68b L |
33 | ENV_PINALIAS "=" "0:PG5,1:PG4,2:PB4,3:PB5,4:PB6,5:PB7," |
34 | "6:PG3,7:PG2,8:PG1,9:PG0,10:PE7" DELIM | |
35 | ENV_STARTADDRESS "=" "0" DELIM | |
b51d2360 | 36 | "pins" "=" "2,8 low 9 high 3 2" DELIM |
534e1dfc L |
37 | DELIM |
38 | }; | |
39 | ||
c0abd68b | 40 | |
1da3acc4 | 41 | /* EEPROM storage */ |
d684c216 L |
42 | typedef struct environment_s { |
43 | uint16_t crc; /* CRC16 over data bytes */ | |
323398b1 | 44 | uint8_t flags; /* active/obsolete flags */ |
d684c216 L |
45 | char data[ENV_SIZE]; /* Environment data */ |
46 | } env_t; | |
47 | ||
48 | ||
1da3acc4 | 49 | /* */ |
d684c216 | 50 | typedef struct env_item_s { |
55027f3b | 51 | char * envvar; |
d684c216 L |
52 | } env_item_t; |
53 | ||
1da3acc4 | 54 | |
323398b1 | 55 | static uint8_t env_valid; |
d684c216 L |
56 | static env_item_t env_list[CONFIG_ENVVAR_MAX]; |
57 | static int entrycount; | |
58 | ||
59 | ||
1da3acc4 L |
60 | static |
61 | char env_get_char(uint16_t index) | |
d684c216 L |
62 | { |
63 | unsigned int off = CONFIG_ENV_OFFSET; | |
55027f3b | 64 | char ret; |
d684c216 | 65 | |
55027f3b L |
66 | switch (env_valid) { |
67 | case 2: | |
68 | off += CONFIG_ENV_SIZE; | |
69 | case 1: | |
70 | ret = (char) eeprom_read_byte((const uint8_t *)off + index + | |
d684c216 | 71 | offsetof(env_t, data)); |
55027f3b | 72 | break; |
d684c216 | 73 | |
55027f3b L |
74 | default: |
75 | ret = default_env[index]; | |
d684c216 | 76 | } |
d684c216 | 77 | |
55027f3b | 78 | return ret; |
d684c216 L |
79 | } |
80 | ||
d684c216 | 81 | |
04cffff0 L |
82 | static const FLASH char *comp_key; |
83 | ||
d684c216 L |
84 | static |
85 | int comp_env_items(const void *m1, const void *m2) | |
86 | { | |
d684c216 L |
87 | env_item_t *ep1 = (env_item_t *) m1; |
88 | env_item_t *ep2 = (env_item_t *) m2; | |
7e24905c | 89 | |
04cffff0 L |
90 | if (ep1 == NULL) |
91 | return - strcmp_P(ep2->envvar, comp_key); | |
92 | else | |
93 | return strcmp(ep1->envvar, ep2->envvar); | |
d684c216 L |
94 | } |
95 | ||
1da3acc4 | 96 | |
7e24905c L |
97 | env_item_t *envlist_search(const MEMX char *name) |
98 | { | |
7e24905c | 99 | #ifdef __MEMX |
7e24905c | 100 | if (__builtin_avr_flash_segment(name) != -1) { |
04cffff0 L |
101 | comp_key = name; |
102 | return bsearch(0, env_list, entrycount, | |
103 | sizeof(env_item_t), comp_env_items); | |
104 | } else { | |
105 | ||
106 | env_item_t e; | |
107 | e.envvar = (char *) name; | |
108 | ||
109 | return bsearch(&e, env_list, entrycount, | |
110 | sizeof(env_item_t), comp_env_items); | |
7e24905c | 111 | } |
04cffff0 L |
112 | #else |
113 | env_item_t e; | |
114 | e.envvar = (char *) name; | |
7e24905c | 115 | |
55027f3b L |
116 | return bsearch(&e, env_list, entrycount, |
117 | sizeof(env_item_t), comp_env_items); | |
04cffff0 | 118 | #endif /* __MEMX */ |
7e24905c L |
119 | } |
120 | ||
121 | ||
122 | static | |
123 | env_item_t *envlist_enter(env_item_t *e) | |
124 | { | |
7e24905c L |
125 | const size_t size = sizeof(env_item_t); |
126 | env_item_t *ep; | |
127 | ||
55027f3b L |
128 | ep = bsearch(e, env_list, entrycount, |
129 | size, comp_env_items); | |
7e24905c L |
130 | |
131 | if (ep == NULL) { | |
132 | if (entrycount < CONFIG_ENVVAR_MAX) { | |
133 | ||
134 | env_list[entrycount++] = *e; | |
135 | qsort(env_list, entrycount, size, comp_env_items); | |
55027f3b L |
136 | ep = bsearch(e, env_list, entrycount, |
137 | size, comp_env_items); | |
7e24905c L |
138 | } |
139 | } else { | |
55027f3b L |
140 | free(ep->envvar); |
141 | ep->envvar = e->envvar; | |
7e24905c L |
142 | } |
143 | ||
144 | return ep; | |
145 | } | |
146 | ||
147 | ||
148 | static | |
149 | int env_item_delete(env_item_t *ep) | |
150 | { | |
151 | if (entrycount == 0) | |
152 | return -1; | |
55027f3b L |
153 | |
154 | free(ep->envvar); | |
7e24905c L |
155 | |
156 | entrycount--; | |
157 | size_t size = sizeof(env_item_t); | |
158 | memmove(ep, ep + 1, (env_list - ep)*size + entrycount*size); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static | |
04cffff0 | 164 | int envlist_delete(const MEMX char *name) |
7e24905c | 165 | { |
04cffff0 | 166 | env_item_t *ep = envlist_search(name); |
7e24905c L |
167 | |
168 | if (ep != NULL) | |
169 | return env_item_delete(ep); | |
170 | ||
171 | return 1; | |
172 | } | |
173 | ||
174 | ||
7e24905c L |
175 | |
176 | static | |
177 | int envlist_import(uint8_t flags) | |
d684c216 | 178 | { |
55027f3b L |
179 | uint16_t index; |
180 | ||
181 | int len; | |
1da3acc4 | 182 | env_item_t e; |
55027f3b L |
183 | char *np, c; |
184 | uint_fast8_t ef; | |
7e24905c L |
185 | |
186 | if ((flags & ENVLIST_DELETE) != 0) | |
187 | while (entrycount != 0) | |
188 | env_item_delete(&env_list[entrycount-1]); | |
189 | ||
55027f3b L |
190 | for (index = 0; env_get_char(index) != '\0'; ) { |
191 | for (len = 0; env_get_char(index + len) != '\0'; ++len) { | |
192 | if ((index + len) >= ENV_SIZE) | |
193 | return -1; | |
1da3acc4 | 194 | } |
d684c216 | 195 | |
ade5670d | 196 | np = (char *) malloc(len+1); |
55027f3b L |
197 | if (np == NULL) { |
198 | printf_P(PSTR("## Can't malloc %d bytes\n"), len+1); | |
199 | return 1; | |
d684c216 | 200 | } |
55027f3b L |
201 | e.envvar = np; |
202 | ef = 0; | |
203 | while ((c = env_get_char(index++)) != '\0') { | |
204 | if (!ef && (c == '=')) { | |
205 | *np = '\0'; | |
206 | ef = 1; | |
207 | } else | |
208 | *np = c; | |
209 | np++; | |
210 | } | |
211 | *np = '\0'; | |
212 | envlist_enter(&e); | |
d684c216 | 213 | } |
d684c216 | 214 | |
55027f3b | 215 | |
1da3acc4 L |
216 | return 0; |
217 | } | |
d684c216 L |
218 | |
219 | ||
1da3acc4 L |
220 | static |
221 | uint16_t env_crc(uint16_t data_offset) | |
323398b1 | 222 | { |
7e24905c | 223 | uint16_t crc; |
1da3acc4 L |
224 | uint16_t i; |
225 | char c, c0; | |
323398b1 | 226 | |
1da3acc4 L |
227 | crc = 0xffff; |
228 | c = 0xff; | |
229 | for (i = 0; !(c == 0 && c0 == 0) && i < ENV_SIZE; i++) | |
230 | { | |
7e24905c | 231 | c0 = c; |
1da3acc4 L |
232 | c = eeprom_read_byte((const uint8_t *) data_offset + i); |
233 | crc = crc16(crc, c); | |
323398b1 | 234 | } |
1da3acc4 L |
235 | return crc ; |
236 | } | |
323398b1 L |
237 | |
238 | ||
1da3acc4 L |
239 | /** |
240 | * return valid env | |
323398b1 | 241 | */ |
1da3acc4 L |
242 | static |
243 | int env_check_valid(void) | |
244 | { | |
245 | const uint16_t offset[2] = {CONFIG_ENV_OFFSET, | |
246 | CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE}; | |
247 | uint_fast8_t flags[2], crc_ok[2]; | |
248 | int rc; | |
249 | ||
250 | /* read FLAGS */ | |
251 | flags[0] = eeprom_read_byte ((uint8_t *) offset[0] + | |
252 | offsetof(env_t, flags)); | |
253 | flags[1] = eeprom_read_byte ((uint8_t *) offset[1] + | |
254 | offsetof(env_t, flags)); | |
255 | ||
256 | /* check CRC */ | |
257 | crc_ok[0] = ( | |
258 | eeprom_read_word((uint16_t *) offset[0] + | |
259 | offsetof(env_t, crc)) | |
260 | == env_crc(offset[0] + offsetof(env_t, data)) | |
261 | ); | |
262 | crc_ok[1] = ( | |
263 | eeprom_read_word((uint16_t *) offset[1] + | |
264 | offsetof(env_t, crc)) | |
265 | == env_crc(offset[1] + offsetof(env_t, data)) | |
266 | ); | |
323398b1 | 267 | |
1da3acc4 L |
268 | if (!crc_ok[0] && !crc_ok[1]) { |
269 | rc = 0; | |
323398b1 | 270 | |
1da3acc4 L |
271 | } else if (crc_ok[0] && !crc_ok[1]) { |
272 | rc = 1; | |
273 | } else if (!crc_ok[0] && crc_ok[1]) { | |
274 | rc = 2; | |
275 | } else { | |
276 | /* both ok - check serial */ | |
277 | #if 1 | |
278 | if (flags[1] == ACTIVE_FLAG && flags[0] != ACTIVE_FLAG) | |
279 | rc = 2; | |
280 | else if (flags[1] == OBSOLETE_FLAG && flags[0] == 0xFF) | |
281 | rc = 2; | |
282 | else | |
283 | rc = 1; | |
284 | #else | |
285 | if (flags[0] == ACTIVE_FLAG && flags[1] == OBSOLETE_FLAG) | |
286 | rc = 1; | |
287 | else if (flags[0] == OBSOLETE_FLAG && flags[1] == ACTIVE_FLAG) | |
288 | rc = 2; | |
289 | else if (flags[0] == 0xFF && flags[1] == 0) | |
290 | rc = 2; | |
291 | else if (flags[1] == 0xFF && flags[0] == 0) | |
292 | rc = 1; | |
293 | else /* flags are equal - almost impossible */ | |
294 | rc = 1; | |
295 | #endif | |
323398b1 | 296 | } |
7e24905c | 297 | |
1da3acc4 L |
298 | return rc; |
299 | } | |
323398b1 L |
300 | |
301 | ||
1da3acc4 | 302 | int env_init(void) |
323398b1 | 303 | { |
1da3acc4 L |
304 | env_valid = env_check_valid(); |
305 | if (env_valid == 0) { | |
55027f3b | 306 | printf_P(PSTR("*** Warning - bad CRC, " |
1da3acc4 | 307 | "using default environment\n\n")); |
d684c216 | 308 | } |
55027f3b | 309 | |
7e24905c L |
310 | envlist_import(ENVLIST_DELETE); |
311 | return 0; | |
323398b1 | 312 | } |
d684c216 | 313 | |
1da3acc4 | 314 | |
bddc7e77 | 315 | char *getenv_str(const MEMX char *name) |
d684c216 L |
316 | { |
317 | env_item_t *ep; | |
318 | char *ret = NULL; | |
319 | ||
55027f3b | 320 | ep = envlist_search(name); |
d684c216 | 321 | if (ep != NULL) |
55027f3b | 322 | ret = ep->envvar + strlen(ep->envvar) +1; |
d684c216 L |
323 | return ret; |
324 | } | |
325 | ||
1da3acc4 L |
326 | static |
327 | int env_item_save(env_item_t *ep, uint16_t offset, int space_left) | |
323398b1 | 328 | { |
55027f3b L |
329 | int nlen, vlen; |
330 | char *var = ep->envvar; | |
323398b1 | 331 | |
55027f3b L |
332 | nlen = strlen(var); |
333 | if (nlen == 0) | |
1da3acc4 | 334 | return 0; |
55027f3b L |
335 | vlen = strlen(var + nlen + 1); |
336 | if (vlen == 0) | |
337 | return 0; | |
338 | if (nlen + vlen + 2 > space_left) | |
1da3acc4 | 339 | return 0; |
7e24905c | 340 | |
55027f3b L |
341 | eeprom_update_block(var, (uint8_t *) offset, nlen); |
342 | offset += nlen; | |
343 | eeprom_update_byte((uint8_t *) offset++, '='); | |
344 | eeprom_update_block(var + nlen +1, (uint8_t *) offset, vlen+1); | |
345 | ||
346 | return nlen + vlen + 2; | |
7e24905c | 347 | } |
1da3acc4 | 348 | |
323398b1 | 349 | |
1da3acc4 | 350 | static |
d684c216 L |
351 | int saveenv(void) |
352 | { | |
323398b1 L |
353 | unsigned int off = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; |
354 | unsigned int off_red = CONFIG_ENV_OFFSET; | |
355 | unsigned int pos; | |
356 | int len, left; | |
357 | uint16_t crc; | |
358 | int rc = 0; | |
d684c216 | 359 | |
323398b1 L |
360 | if (env_valid == 2) { |
361 | off = CONFIG_ENV_OFFSET; | |
362 | off_red = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
363 | } | |
364 | ||
7e24905c | 365 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), 0xff); |
d684c216 | 366 | |
323398b1 L |
367 | pos = off + offsetof(env_t, data); |
368 | left = ENV_SIZE - 1; | |
369 | for (int i = 0 ; i < entrycount; i++) { | |
370 | len = env_item_save(&env_list[i], pos, left); | |
371 | if (len == 0) { | |
372 | return 1; | |
373 | } | |
374 | pos += len; | |
375 | left -= len; | |
376 | } | |
377 | /* terminate list */ | |
378 | eeprom_update_byte((uint8_t *) pos, 0); | |
379 | crc = env_crc(off + offsetof(env_t, data)); | |
380 | eeprom_update_word((uint16_t *) off + offsetof(env_t, crc), crc); | |
7e24905c | 381 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), |
323398b1 L |
382 | ACTIVE_FLAG); |
383 | ||
384 | if (rc == 0) { | |
7e24905c | 385 | eeprom_update_byte((uint8_t *) off_red + offsetof(env_t, flags), |
323398b1 L |
386 | OBSOLETE_FLAG); |
387 | env_valid = (env_valid == 2) ? 1 : 2; | |
323398b1 | 388 | } |
7e24905c | 389 | |
d684c216 L |
390 | return rc; |
391 | } | |
392 | ||
d684c216 | 393 | |
1da3acc4 L |
394 | static |
395 | int env_item_print(env_item_t *ep) | |
d684c216 | 396 | { |
1da3acc4 | 397 | int len; |
55027f3b L |
398 | char *ev = ep->envvar; |
399 | ||
400 | len = printf_P(PSTR("%s="), ev); | |
401 | len += printf_P(PSTR("%s\n"), ev + len); | |
1da3acc4 L |
402 | |
403 | return len; | |
7e24905c | 404 | } |
323398b1 L |
405 | |
406 | ||
d684c216 L |
407 | /* |
408 | * Command interface: print one or all environment variables | |
409 | * | |
410 | * Returns -1 in case of error, or length of printed string | |
411 | */ | |
7e24905c | 412 | static |
fc30b18e | 413 | int env_print(const MEMX char *name) |
d684c216 L |
414 | { |
415 | int len = -1; | |
416 | ||
417 | if (name) { /* print a single name */ | |
7e24905c | 418 | |
d684c216 L |
419 | env_item_t *ep = envlist_search(name); |
420 | if (ep != NULL) | |
421 | len = env_item_print(ep); | |
422 | ||
423 | } else { /* print whole list */ | |
424 | len = 0; | |
425 | for (int i = 0 ; i < entrycount; i++) { | |
426 | len += env_item_print(&env_list[i]); | |
427 | } | |
428 | } | |
429 | return len; | |
430 | } | |
431 | ||
1da3acc4 | 432 | |
72f58822 L |
433 | /** |
434 | * Set or delete environment variable | |
435 | * | |
d684c216 L |
436 | * Set a new environment variable, |
437 | * or replace or delete an existing one. | |
72f58822 L |
438 | * |
439 | * @param flag (not used) | |
440 | * @param argc | |
441 | * @param argv[1] Environment variable to set or delete | |
442 | * if no more args | |
443 | * @param argv[2] ... Value to set it to | |
444 | * | |
445 | * @return 0 if ok, 1 on error | |
d684c216 | 446 | */ |
1da3acc4 | 447 | static |
93ea25f2 | 448 | command_ret_t _do_env_set(uint_fast8_t flag, int argc, char * const argv[]) |
d684c216 | 449 | { |
72f58822 | 450 | int i, len; |
55027f3b | 451 | char *name, *value, *valp, *p; |
d684c216 L |
452 | env_item_t e, *ep; |
453 | ||
454 | (void) flag; | |
d684c216 L |
455 | |
456 | name = argv[1]; | |
457 | value = argv[2]; | |
458 | ||
459 | if (strchr(name, '=')) { | |
460 | printf_P(PSTR("## Error: illegal character '='" | |
461 | "in variable name \"%s\"\n"), name); | |
d0581f88 | 462 | return CMD_RET_FAILURE; |
d684c216 | 463 | } |
55027f3b L |
464 | len = strlen(name); |
465 | if (len > CONFIG_SYS_ENV_NAMELEN) { | |
d684c216 L |
466 | printf_P(PSTR("## Error: Variable name \"%s\" too long. " |
467 | "(max %d characters)\n"), name, CONFIG_SYS_ENV_NAMELEN); | |
d0581f88 | 468 | return CMD_RET_FAILURE; |
d684c216 L |
469 | } |
470 | /* | |
471 | env_id++; | |
472 | */ | |
473 | /* Delete only ? */ | |
474 | if (argc < 3 || argv[2] == NULL) { | |
475 | int rc = envlist_delete(name); | |
d0581f88 | 476 | return rc ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
d684c216 L |
477 | } |
478 | ||
479 | /* | |
480 | * Insert / replace new value | |
481 | */ | |
55027f3b | 482 | for (i = 2, len += 1; i < argc; ++i) |
d684c216 L |
483 | len += strlen(argv[i]) + 1; |
484 | ||
ade5670d | 485 | value = malloc(len); |
d684c216 L |
486 | if (value == NULL) { |
487 | printf_P(PSTR("## Can't malloc %d bytes\n"), len); | |
d0581f88 | 488 | return CMD_RET_FAILURE; |
d684c216 | 489 | } |
55027f3b L |
490 | strcpy(value, name); |
491 | valp = value + strlen(name) + 1; | |
492 | for (i = 2, p = valp; i < argc; ++i) { | |
d684c216 L |
493 | char *v = argv[i]; |
494 | ||
55027f3b | 495 | while ((*p++ = *v++) != '\0') |
d684c216 | 496 | ; |
55027f3b | 497 | *(p - 1) = ' '; |
d684c216 | 498 | } |
55027f3b L |
499 | if (p != valp) |
500 | *--p = '\0'; | |
d684c216 | 501 | |
55027f3b | 502 | e.envvar = value; |
d684c216 L |
503 | ep = envlist_enter(&e); |
504 | if (!ep) { | |
505 | printf_P(PSTR("## Error inserting \"%s\" variable.\n"), | |
506 | name); | |
d0581f88 | 507 | return CMD_RET_FAILURE; |
d684c216 L |
508 | } |
509 | ||
d0581f88 | 510 | return CMD_RET_SUCCESS; |
d684c216 L |
511 | } |
512 | ||
72f58822 L |
513 | /** |
514 | * Set an environment variable | |
515 | * | |
516 | * @param varname Environment variable to set | |
517 | * @param varvalue Value to set it to | |
518 | * @return 0 if ok, 1 on error | |
519 | */ | |
1da3acc4 | 520 | static |
c0abd68b | 521 | int setenv(const MEMX char *varname, const char *varvalue) |
d684c216 | 522 | { |
c0abd68b L |
523 | int rc; |
524 | ||
525 | #ifdef __MEMX | |
526 | char *tmpname = NULL; | |
527 | if (__builtin_avr_flash_segment(varname) != -1) { | |
528 | tmpname = malloc(strlen_P(varname)+1); | |
529 | if (tmpname == NULL) { | |
530 | printf_P(PSTR("setenv: Out of Memory!\n")); | |
531 | return 1; | |
532 | } | |
533 | strcpy_P(tmpname, varname); | |
534 | } else | |
535 | tmpname = (char *) varname; | |
536 | #endif | |
537 | ||
538 | const char * const argv[3] = { NULL, tmpname, varvalue }; | |
d684c216 L |
539 | int argc = 3; |
540 | ||
541 | if (varvalue == NULL || varvalue[0] == '\0') | |
542 | --argc; | |
7e24905c | 543 | |
c0abd68b L |
544 | rc = (int) _do_env_set(0, argc, (char * const *)argv); |
545 | ||
546 | #ifdef __MEMX | |
547 | free(tmpname); | |
548 | #endif | |
549 | return rc; | |
d684c216 L |
550 | } |
551 | ||
d684c216 L |
552 | /** |
553 | * Set an environment variable to an integer value | |
554 | * | |
f76ca346 L |
555 | * @param name Environment variable to set |
556 | * @param value Value to set it to | |
557 | * @param radix Base | |
d684c216 L |
558 | * @return 0 if ok, 1 on error |
559 | */ | |
f76ca346 L |
560 | static |
561 | int setenv_intval(const MEMX char *name, unsigned long value, int radix) | |
d684c216 | 562 | { |
f76ca346 | 563 | char buf[11]; |
d684c216 | 564 | |
f76ca346 | 565 | ultoa(value, buf, radix); |
d684c216 | 566 | |
f76ca346 L |
567 | return setenv(name, buf); |
568 | } | |
d684c216 L |
569 | |
570 | /** | |
f76ca346 | 571 | * Set an environment variable to a decimal integer value |
d684c216 | 572 | * |
f76ca346 L |
573 | * @param name Environment variable to set |
574 | * @param value Value to set it to | |
d684c216 L |
575 | * @return 0 if ok, 1 on error |
576 | */ | |
f76ca346 | 577 | int setenv_ulong(const MEMX char *name, unsigned long value) |
d684c216 | 578 | { |
f76ca346 L |
579 | return setenv_intval(name, value, 10); |
580 | } | |
581 | ||
d684c216 | 582 | |
f76ca346 L |
583 | /** |
584 | * Set an environment variable to a value in hex | |
585 | * | |
586 | * @param name Environment variable to set | |
587 | * @param value Value to set it to | |
588 | * @return 0 if ok, 1 on error | |
589 | */ | |
590 | int setenv_hex(const MEMX char *name, unsigned long value) | |
591 | { | |
592 | return setenv_intval(name, value, 16); | |
d684c216 L |
593 | } |
594 | ||
35e9ec0c | 595 | |
72f58822 | 596 | /** |
35e9ec0c | 597 | * Decode the integer value of an environment variable and return it. |
72f58822 | 598 | * |
35e9ec0c L |
599 | * @param name Name of environemnt variable |
600 | * @param base Number base to use (normally 10, or 16 for hex) | |
601 | * @param default_val Default value to return if the variable is not | |
602 | * found | |
603 | * @return the decoded value, or default_val if not found | |
72f58822 | 604 | */ |
fc30b18e | 605 | unsigned long getenv_ulong(const MEMX char *name, int base, unsigned long default_val) |
d684c216 | 606 | { |
d684c216 | 607 | unsigned long value; |
35e9ec0c L |
608 | char *vp, *endp; |
609 | ||
610 | env_item_t *ep = envlist_search(name); | |
d684c216 | 611 | |
35e9ec0c | 612 | if (ep != NULL ) { |
55027f3b L |
613 | vp = ep->envvar + strlen(ep->envvar) +1; |
614 | value = strtoul(vp, &endp, base); | |
615 | if (endp != vp) | |
616 | return value; | |
35e9ec0c | 617 | } |
d684c216 | 618 | |
35e9ec0c | 619 | return default_val; |
d684c216 L |
620 | } |
621 | ||
35e9ec0c | 622 | |
be84a704 L |
623 | /* |
624 | * Read an environment variable as a boolean | |
625 | */ | |
626 | bool getenv_yesno(const MEMX char *name) | |
627 | { | |
bddc7e77 | 628 | char *s = getenv_str(name); |
be84a704 L |
629 | |
630 | if (s == NULL) | |
631 | return false; | |
632 | ||
633 | return strchr_P(PSTR("1yYtT"), *s) != NULL; | |
634 | ||
635 | /* | |
636 | return *s == '1' || *s == 'y' || *s == 'Y' || *s == 't' || *s == 'T' ? | |
637 | 1 : 0; | |
638 | */ | |
639 | } | |
640 | ||
93ea25f2 | 641 | command_ret_t do_env_print(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
f76ca346 L |
642 | { |
643 | command_ret_t rc = CMD_RET_SUCCESS; | |
644 | ||
645 | (void) cmdtp; (void) flag; | |
646 | ||
647 | if (argc == 1) { | |
648 | /* print all env vars */ | |
649 | int size = env_print(NULL); | |
650 | if (size < 0) | |
651 | return CMD_RET_FAILURE; | |
652 | printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), | |
653 | size, ENV_SIZE); | |
654 | return CMD_RET_SUCCESS; | |
655 | } | |
656 | ||
657 | /* print selected env vars */ | |
658 | for (int i = 1; i < argc; ++i) { | |
659 | int rc = env_print(argv[i]); | |
660 | if (rc < 0) { | |
661 | printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[i]); | |
662 | rc = CMD_RET_FAILURE; | |
663 | } | |
664 | } | |
665 | ||
666 | return rc; | |
667 | } | |
668 | ||
669 | ||
93ea25f2 | 670 | command_ret_t do_env_set(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
d684c216 L |
671 | { |
672 | (void) cmdtp; | |
673 | ||
674 | if (argc < 2) | |
675 | return CMD_RET_USAGE; | |
676 | ||
677 | return _do_env_set(flag, argc, argv); | |
678 | } | |
679 | ||
680 | ||
93ea25f2 | 681 | command_ret_t do_env_default(cmd_tbl_t *cmdtp, uint_fast8_t flag, |
7e24905c L |
682 | int argc, char * const argv[]) |
683 | { | |
684 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
685 | ||
55027f3b L |
686 | uint8_t tmp = env_valid; |
687 | env_valid = 0; | |
688 | ||
7e24905c | 689 | /* Reset the whole environment */ |
55027f3b | 690 | printf_P(PSTR("## Resetting to default environment\n")); |
7e24905c L |
691 | envlist_import(ENVLIST_DELETE); |
692 | ||
55027f3b L |
693 | env_valid = tmp; |
694 | ||
7e24905c L |
695 | return CMD_RET_SUCCESS; |
696 | } | |
697 | ||
55027f3b | 698 | |
93ea25f2 | 699 | command_ret_t do_env_save(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
323398b1 L |
700 | { |
701 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
702 | ||
703 | printf_P(PSTR("Saving Environment ...\n")); | |
d0581f88 | 704 | return saveenv() ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
323398b1 L |
705 | } |
706 | ||
55027f3b | 707 | |
7e24905c | 708 | #if defined(CONFIG_AUTO_COMPLETE) |
d684c216 L |
709 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) |
710 | { | |
711 | ENTRY *match; | |
712 | int found, idx; | |
713 | ||
714 | idx = 0; | |
715 | found = 0; | |
716 | cmdv[0] = NULL; | |
717 | ||
718 | while ((idx = hmatch_r(var, idx, &match, &env_htab))) { | |
719 | int vallen = strlen(match->key) + 1; | |
720 | ||
721 | if (found >= maxv - 2 || bufsz < vallen) | |
722 | break; | |
723 | ||
724 | cmdv[found++] = buf; | |
725 | memcpy(buf, match->key, vallen); | |
726 | buf += vallen; | |
727 | bufsz -= vallen; | |
728 | } | |
729 | ||
730 | qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar); | |
731 | ||
732 | if (idx) | |
733 | cmdv[found++] = "..."; | |
734 | ||
735 | cmdv[found] = NULL; | |
736 | return found; | |
737 | } | |
738 | #endif |