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Commit | Line | Data |
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35edb766 L |
1 | /* |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
d684c216 L |
7 | #include "common.h" |
8 | #include <string.h> | |
9 | #include <stdlib.h> | |
be84a704 | 10 | #include <stdbool.h> |
d684c216 L |
11 | #include <avr/eeprom.h> |
12 | ||
13 | #include "config.h" | |
14 | #include "debug.h" | |
15 | #include "xmalloc.h" | |
16 | #include "crc.h" | |
17 | #include "command.h" | |
d684c216 L |
18 | #include "env.h" |
19 | ||
20 | ||
323398b1 L |
21 | #define ENV_SIZE (CONFIG_ENV_SIZE - sizeof(uint16_t) -1) |
22 | #define ACTIVE_FLAG 1 | |
23 | #define OBSOLETE_FLAG 0 | |
d684c216 | 24 | |
7e24905c L |
25 | #define ENVLIST_DELETE (1<<0) |
26 | ||
d684c216 | 27 | |
534e1dfc L |
28 | /* |
29 | * Default Environment | |
30 | */ | |
1da3acc4 L |
31 | |
32 | #define DELIM "\0" | |
33 | ||
534e1dfc | 34 | const FLASH char default_env[] = { |
c0abd68b L |
35 | ENV_BAUDRATE "=" "115200" DELIM |
36 | ENV_BOOTDELAY "=" "3" DELIM | |
37 | ENV_BOOTCMD "=" "reset; loadf; go ${startaddr}" DELIM | |
057817cb | 38 | ENV_CPM3_SYSFILE "=" CONFIG_CPM3_SYSFILE DELIM |
c0abd68b L |
39 | ENV_PINALIAS "=" "0:PG5,1:PG4,2:PB4,3:PB5,4:PB6,5:PB7," |
40 | "6:PG3,7:PG2,8:PG1,9:PG0,10:PE7" DELIM | |
41 | ENV_STARTADDRESS "=" "0" DELIM | |
534e1dfc L |
42 | DELIM |
43 | }; | |
44 | ||
c0abd68b | 45 | |
1da3acc4 | 46 | /* EEPROM storage */ |
d684c216 L |
47 | typedef struct environment_s { |
48 | uint16_t crc; /* CRC16 over data bytes */ | |
323398b1 | 49 | uint8_t flags; /* active/obsolete flags */ |
d684c216 L |
50 | char data[ENV_SIZE]; /* Environment data */ |
51 | } env_t; | |
52 | ||
53 | ||
1da3acc4 | 54 | /* */ |
d684c216 | 55 | typedef struct env_item_s { |
55027f3b | 56 | char * envvar; |
d684c216 L |
57 | } env_item_t; |
58 | ||
1da3acc4 | 59 | |
323398b1 | 60 | static uint8_t env_valid; |
d684c216 L |
61 | static env_item_t env_list[CONFIG_ENVVAR_MAX]; |
62 | static int entrycount; | |
63 | ||
64 | ||
1da3acc4 L |
65 | static |
66 | char env_get_char(uint16_t index) | |
d684c216 L |
67 | { |
68 | unsigned int off = CONFIG_ENV_OFFSET; | |
55027f3b | 69 | char ret; |
d684c216 | 70 | |
55027f3b L |
71 | switch (env_valid) { |
72 | case 2: | |
73 | off += CONFIG_ENV_SIZE; | |
74 | case 1: | |
75 | ret = (char) eeprom_read_byte((const uint8_t *)off + index + | |
d684c216 | 76 | offsetof(env_t, data)); |
55027f3b | 77 | break; |
d684c216 | 78 | |
55027f3b L |
79 | default: |
80 | ret = default_env[index]; | |
d684c216 | 81 | } |
d684c216 | 82 | |
55027f3b | 83 | return ret; |
d684c216 L |
84 | } |
85 | ||
d684c216 | 86 | |
04cffff0 L |
87 | static const FLASH char *comp_key; |
88 | ||
d684c216 L |
89 | static |
90 | int comp_env_items(const void *m1, const void *m2) | |
91 | { | |
d684c216 L |
92 | env_item_t *ep1 = (env_item_t *) m1; |
93 | env_item_t *ep2 = (env_item_t *) m2; | |
7e24905c | 94 | |
04cffff0 L |
95 | if (ep1 == NULL) |
96 | return - strcmp_P(ep2->envvar, comp_key); | |
97 | else | |
98 | return strcmp(ep1->envvar, ep2->envvar); | |
d684c216 L |
99 | } |
100 | ||
1da3acc4 | 101 | |
7e24905c L |
102 | env_item_t *envlist_search(const MEMX char *name) |
103 | { | |
7e24905c | 104 | #ifdef __MEMX |
7e24905c | 105 | if (__builtin_avr_flash_segment(name) != -1) { |
04cffff0 L |
106 | comp_key = name; |
107 | return bsearch(0, env_list, entrycount, | |
108 | sizeof(env_item_t), comp_env_items); | |
109 | } else { | |
110 | ||
111 | env_item_t e; | |
112 | e.envvar = (char *) name; | |
113 | ||
114 | return bsearch(&e, env_list, entrycount, | |
115 | sizeof(env_item_t), comp_env_items); | |
7e24905c | 116 | } |
04cffff0 L |
117 | #else |
118 | env_item_t e; | |
119 | e.envvar = (char *) name; | |
7e24905c | 120 | |
55027f3b L |
121 | return bsearch(&e, env_list, entrycount, |
122 | sizeof(env_item_t), comp_env_items); | |
04cffff0 | 123 | #endif /* __MEMX */ |
7e24905c L |
124 | } |
125 | ||
126 | ||
127 | static | |
128 | env_item_t *envlist_enter(env_item_t *e) | |
129 | { | |
7e24905c L |
130 | const size_t size = sizeof(env_item_t); |
131 | env_item_t *ep; | |
132 | ||
55027f3b L |
133 | ep = bsearch(e, env_list, entrycount, |
134 | size, comp_env_items); | |
7e24905c L |
135 | |
136 | if (ep == NULL) { | |
137 | if (entrycount < CONFIG_ENVVAR_MAX) { | |
138 | ||
139 | env_list[entrycount++] = *e; | |
140 | qsort(env_list, entrycount, size, comp_env_items); | |
55027f3b L |
141 | ep = bsearch(e, env_list, entrycount, |
142 | size, comp_env_items); | |
7e24905c L |
143 | } |
144 | } else { | |
55027f3b L |
145 | free(ep->envvar); |
146 | ep->envvar = e->envvar; | |
7e24905c L |
147 | } |
148 | ||
149 | return ep; | |
150 | } | |
151 | ||
152 | ||
153 | static | |
154 | int env_item_delete(env_item_t *ep) | |
155 | { | |
156 | if (entrycount == 0) | |
157 | return -1; | |
55027f3b L |
158 | |
159 | free(ep->envvar); | |
7e24905c L |
160 | |
161 | entrycount--; | |
162 | size_t size = sizeof(env_item_t); | |
163 | memmove(ep, ep + 1, (env_list - ep)*size + entrycount*size); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | static | |
04cffff0 | 169 | int envlist_delete(const MEMX char *name) |
7e24905c | 170 | { |
04cffff0 | 171 | env_item_t *ep = envlist_search(name); |
7e24905c L |
172 | |
173 | if (ep != NULL) | |
174 | return env_item_delete(ep); | |
175 | ||
176 | return 1; | |
177 | } | |
178 | ||
179 | ||
7e24905c L |
180 | |
181 | static | |
182 | int envlist_import(uint8_t flags) | |
d684c216 | 183 | { |
55027f3b L |
184 | uint16_t index; |
185 | ||
186 | int len; | |
1da3acc4 | 187 | env_item_t e; |
55027f3b L |
188 | char *np, c; |
189 | uint_fast8_t ef; | |
7e24905c L |
190 | |
191 | if ((flags & ENVLIST_DELETE) != 0) | |
192 | while (entrycount != 0) | |
193 | env_item_delete(&env_list[entrycount-1]); | |
194 | ||
55027f3b L |
195 | for (index = 0; env_get_char(index) != '\0'; ) { |
196 | for (len = 0; env_get_char(index + len) != '\0'; ++len) { | |
197 | if ((index + len) >= ENV_SIZE) | |
198 | return -1; | |
1da3acc4 | 199 | } |
d684c216 | 200 | |
55027f3b L |
201 | np = (char *) xmalloc(len+1); |
202 | if (np == NULL) { | |
203 | printf_P(PSTR("## Can't malloc %d bytes\n"), len+1); | |
204 | return 1; | |
d684c216 | 205 | } |
55027f3b L |
206 | e.envvar = np; |
207 | ef = 0; | |
208 | while ((c = env_get_char(index++)) != '\0') { | |
209 | if (!ef && (c == '=')) { | |
210 | *np = '\0'; | |
211 | ef = 1; | |
212 | } else | |
213 | *np = c; | |
214 | np++; | |
215 | } | |
216 | *np = '\0'; | |
217 | envlist_enter(&e); | |
d684c216 | 218 | } |
d684c216 | 219 | |
55027f3b | 220 | |
1da3acc4 L |
221 | return 0; |
222 | } | |
d684c216 L |
223 | |
224 | ||
1da3acc4 L |
225 | static |
226 | uint16_t env_crc(uint16_t data_offset) | |
323398b1 | 227 | { |
7e24905c | 228 | uint16_t crc; |
1da3acc4 L |
229 | uint16_t i; |
230 | char c, c0; | |
323398b1 | 231 | |
1da3acc4 L |
232 | crc = 0xffff; |
233 | c = 0xff; | |
234 | for (i = 0; !(c == 0 && c0 == 0) && i < ENV_SIZE; i++) | |
235 | { | |
7e24905c | 236 | c0 = c; |
1da3acc4 L |
237 | c = eeprom_read_byte((const uint8_t *) data_offset + i); |
238 | crc = crc16(crc, c); | |
323398b1 | 239 | } |
1da3acc4 L |
240 | return crc ; |
241 | } | |
323398b1 L |
242 | |
243 | ||
1da3acc4 L |
244 | /** |
245 | * return valid env | |
323398b1 | 246 | */ |
1da3acc4 L |
247 | static |
248 | int env_check_valid(void) | |
249 | { | |
250 | const uint16_t offset[2] = {CONFIG_ENV_OFFSET, | |
251 | CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE}; | |
252 | uint_fast8_t flags[2], crc_ok[2]; | |
253 | int rc; | |
254 | ||
255 | /* read FLAGS */ | |
256 | flags[0] = eeprom_read_byte ((uint8_t *) offset[0] + | |
257 | offsetof(env_t, flags)); | |
258 | flags[1] = eeprom_read_byte ((uint8_t *) offset[1] + | |
259 | offsetof(env_t, flags)); | |
260 | ||
261 | /* check CRC */ | |
262 | crc_ok[0] = ( | |
263 | eeprom_read_word((uint16_t *) offset[0] + | |
264 | offsetof(env_t, crc)) | |
265 | == env_crc(offset[0] + offsetof(env_t, data)) | |
266 | ); | |
267 | crc_ok[1] = ( | |
268 | eeprom_read_word((uint16_t *) offset[1] + | |
269 | offsetof(env_t, crc)) | |
270 | == env_crc(offset[1] + offsetof(env_t, data)) | |
271 | ); | |
323398b1 | 272 | |
1da3acc4 L |
273 | if (!crc_ok[0] && !crc_ok[1]) { |
274 | rc = 0; | |
323398b1 | 275 | |
1da3acc4 L |
276 | } else if (crc_ok[0] && !crc_ok[1]) { |
277 | rc = 1; | |
278 | } else if (!crc_ok[0] && crc_ok[1]) { | |
279 | rc = 2; | |
280 | } else { | |
281 | /* both ok - check serial */ | |
282 | #if 1 | |
283 | if (flags[1] == ACTIVE_FLAG && flags[0] != ACTIVE_FLAG) | |
284 | rc = 2; | |
285 | else if (flags[1] == OBSOLETE_FLAG && flags[0] == 0xFF) | |
286 | rc = 2; | |
287 | else | |
288 | rc = 1; | |
289 | #else | |
290 | if (flags[0] == ACTIVE_FLAG && flags[1] == OBSOLETE_FLAG) | |
291 | rc = 1; | |
292 | else if (flags[0] == OBSOLETE_FLAG && flags[1] == ACTIVE_FLAG) | |
293 | rc = 2; | |
294 | else if (flags[0] == 0xFF && flags[1] == 0) | |
295 | rc = 2; | |
296 | else if (flags[1] == 0xFF && flags[0] == 0) | |
297 | rc = 1; | |
298 | else /* flags are equal - almost impossible */ | |
299 | rc = 1; | |
300 | #endif | |
323398b1 | 301 | } |
7e24905c | 302 | |
1da3acc4 L |
303 | return rc; |
304 | } | |
323398b1 L |
305 | |
306 | ||
1da3acc4 | 307 | int env_init(void) |
323398b1 | 308 | { |
1da3acc4 L |
309 | env_valid = env_check_valid(); |
310 | if (env_valid == 0) { | |
55027f3b | 311 | printf_P(PSTR("*** Warning - bad CRC, " |
1da3acc4 | 312 | "using default environment\n\n")); |
d684c216 | 313 | } |
55027f3b | 314 | |
7e24905c L |
315 | envlist_import(ENVLIST_DELETE); |
316 | return 0; | |
323398b1 | 317 | } |
d684c216 | 318 | |
1da3acc4 | 319 | |
1b77fa4e | 320 | char *getenv_char(const MEMX char *name) |
d684c216 L |
321 | { |
322 | env_item_t *ep; | |
323 | char *ret = NULL; | |
324 | ||
55027f3b | 325 | ep = envlist_search(name); |
d684c216 | 326 | if (ep != NULL) |
55027f3b | 327 | ret = ep->envvar + strlen(ep->envvar) +1; |
d684c216 L |
328 | return ret; |
329 | } | |
330 | ||
1da3acc4 L |
331 | static |
332 | int env_item_save(env_item_t *ep, uint16_t offset, int space_left) | |
323398b1 | 333 | { |
55027f3b L |
334 | int nlen, vlen; |
335 | char *var = ep->envvar; | |
323398b1 | 336 | |
55027f3b L |
337 | nlen = strlen(var); |
338 | if (nlen == 0) | |
1da3acc4 | 339 | return 0; |
55027f3b L |
340 | vlen = strlen(var + nlen + 1); |
341 | if (vlen == 0) | |
342 | return 0; | |
343 | if (nlen + vlen + 2 > space_left) | |
1da3acc4 | 344 | return 0; |
7e24905c | 345 | |
55027f3b L |
346 | eeprom_update_block(var, (uint8_t *) offset, nlen); |
347 | offset += nlen; | |
348 | eeprom_update_byte((uint8_t *) offset++, '='); | |
349 | eeprom_update_block(var + nlen +1, (uint8_t *) offset, vlen+1); | |
350 | ||
351 | return nlen + vlen + 2; | |
7e24905c | 352 | } |
1da3acc4 | 353 | |
323398b1 | 354 | |
1da3acc4 | 355 | static |
d684c216 L |
356 | int saveenv(void) |
357 | { | |
323398b1 L |
358 | unsigned int off = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; |
359 | unsigned int off_red = CONFIG_ENV_OFFSET; | |
360 | unsigned int pos; | |
361 | int len, left; | |
362 | uint16_t crc; | |
363 | int rc = 0; | |
d684c216 | 364 | |
323398b1 L |
365 | if (env_valid == 2) { |
366 | off = CONFIG_ENV_OFFSET; | |
367 | off_red = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
368 | } | |
369 | ||
7e24905c | 370 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), 0xff); |
d684c216 | 371 | |
323398b1 L |
372 | pos = off + offsetof(env_t, data); |
373 | left = ENV_SIZE - 1; | |
374 | for (int i = 0 ; i < entrycount; i++) { | |
375 | len = env_item_save(&env_list[i], pos, left); | |
376 | if (len == 0) { | |
377 | return 1; | |
378 | } | |
379 | pos += len; | |
380 | left -= len; | |
381 | } | |
382 | /* terminate list */ | |
383 | eeprom_update_byte((uint8_t *) pos, 0); | |
384 | crc = env_crc(off + offsetof(env_t, data)); | |
385 | eeprom_update_word((uint16_t *) off + offsetof(env_t, crc), crc); | |
7e24905c | 386 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), |
323398b1 L |
387 | ACTIVE_FLAG); |
388 | ||
389 | if (rc == 0) { | |
7e24905c | 390 | eeprom_update_byte((uint8_t *) off_red + offsetof(env_t, flags), |
323398b1 L |
391 | OBSOLETE_FLAG); |
392 | env_valid = (env_valid == 2) ? 1 : 2; | |
323398b1 | 393 | } |
7e24905c | 394 | |
d684c216 L |
395 | return rc; |
396 | } | |
397 | ||
d684c216 | 398 | |
1da3acc4 L |
399 | static |
400 | int env_item_print(env_item_t *ep) | |
d684c216 | 401 | { |
1da3acc4 | 402 | int len; |
55027f3b L |
403 | char *ev = ep->envvar; |
404 | ||
405 | len = printf_P(PSTR("%s="), ev); | |
406 | len += printf_P(PSTR("%s\n"), ev + len); | |
1da3acc4 L |
407 | |
408 | return len; | |
7e24905c | 409 | } |
323398b1 L |
410 | |
411 | ||
d684c216 L |
412 | /* |
413 | * Command interface: print one or all environment variables | |
414 | * | |
415 | * Returns -1 in case of error, or length of printed string | |
416 | */ | |
7e24905c | 417 | static |
fc30b18e | 418 | int env_print(const MEMX char *name) |
d684c216 L |
419 | { |
420 | int len = -1; | |
421 | ||
422 | if (name) { /* print a single name */ | |
7e24905c | 423 | |
d684c216 L |
424 | env_item_t *ep = envlist_search(name); |
425 | if (ep != NULL) | |
426 | len = env_item_print(ep); | |
427 | ||
428 | } else { /* print whole list */ | |
429 | len = 0; | |
430 | for (int i = 0 ; i < entrycount; i++) { | |
431 | len += env_item_print(&env_list[i]); | |
432 | } | |
433 | } | |
434 | return len; | |
435 | } | |
436 | ||
1da3acc4 | 437 | |
72f58822 L |
438 | /** |
439 | * Set or delete environment variable | |
440 | * | |
d684c216 L |
441 | * Set a new environment variable, |
442 | * or replace or delete an existing one. | |
72f58822 L |
443 | * |
444 | * @param flag (not used) | |
445 | * @param argc | |
446 | * @param argv[1] Environment variable to set or delete | |
447 | * if no more args | |
448 | * @param argv[2] ... Value to set it to | |
449 | * | |
450 | * @return 0 if ok, 1 on error | |
d684c216 | 451 | */ |
1da3acc4 | 452 | static |
d0581f88 | 453 | command_ret_t _do_env_set(int flag, int argc, char * const argv[]) |
d684c216 | 454 | { |
72f58822 | 455 | int i, len; |
55027f3b | 456 | char *name, *value, *valp, *p; |
d684c216 L |
457 | env_item_t e, *ep; |
458 | ||
459 | (void) flag; | |
d684c216 L |
460 | |
461 | name = argv[1]; | |
462 | value = argv[2]; | |
463 | ||
464 | if (strchr(name, '=')) { | |
465 | printf_P(PSTR("## Error: illegal character '='" | |
466 | "in variable name \"%s\"\n"), name); | |
d0581f88 | 467 | return CMD_RET_FAILURE; |
d684c216 | 468 | } |
55027f3b L |
469 | len = strlen(name); |
470 | if (len > CONFIG_SYS_ENV_NAMELEN) { | |
d684c216 L |
471 | printf_P(PSTR("## Error: Variable name \"%s\" too long. " |
472 | "(max %d characters)\n"), name, CONFIG_SYS_ENV_NAMELEN); | |
d0581f88 | 473 | return CMD_RET_FAILURE; |
d684c216 L |
474 | } |
475 | /* | |
476 | env_id++; | |
477 | */ | |
478 | /* Delete only ? */ | |
479 | if (argc < 3 || argv[2] == NULL) { | |
480 | int rc = envlist_delete(name); | |
d0581f88 | 481 | return rc ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
d684c216 L |
482 | } |
483 | ||
484 | /* | |
485 | * Insert / replace new value | |
486 | */ | |
55027f3b | 487 | for (i = 2, len += 1; i < argc; ++i) |
d684c216 L |
488 | len += strlen(argv[i]) + 1; |
489 | ||
490 | value = xmalloc(len); | |
491 | if (value == NULL) { | |
492 | printf_P(PSTR("## Can't malloc %d bytes\n"), len); | |
d0581f88 | 493 | return CMD_RET_FAILURE; |
d684c216 | 494 | } |
55027f3b L |
495 | strcpy(value, name); |
496 | valp = value + strlen(name) + 1; | |
497 | for (i = 2, p = valp; i < argc; ++i) { | |
d684c216 L |
498 | char *v = argv[i]; |
499 | ||
55027f3b | 500 | while ((*p++ = *v++) != '\0') |
d684c216 | 501 | ; |
55027f3b | 502 | *(p - 1) = ' '; |
d684c216 | 503 | } |
55027f3b L |
504 | if (p != valp) |
505 | *--p = '\0'; | |
d684c216 | 506 | |
55027f3b | 507 | e.envvar = value; |
d684c216 L |
508 | ep = envlist_enter(&e); |
509 | if (!ep) { | |
510 | printf_P(PSTR("## Error inserting \"%s\" variable.\n"), | |
511 | name); | |
d0581f88 | 512 | return CMD_RET_FAILURE; |
d684c216 L |
513 | } |
514 | ||
d0581f88 | 515 | return CMD_RET_SUCCESS; |
d684c216 L |
516 | } |
517 | ||
72f58822 L |
518 | /** |
519 | * Set an environment variable | |
520 | * | |
521 | * @param varname Environment variable to set | |
522 | * @param varvalue Value to set it to | |
523 | * @return 0 if ok, 1 on error | |
524 | */ | |
1da3acc4 | 525 | static |
c0abd68b | 526 | int setenv(const MEMX char *varname, const char *varvalue) |
d684c216 | 527 | { |
c0abd68b L |
528 | int rc; |
529 | ||
530 | #ifdef __MEMX | |
531 | char *tmpname = NULL; | |
532 | if (__builtin_avr_flash_segment(varname) != -1) { | |
533 | tmpname = malloc(strlen_P(varname)+1); | |
534 | if (tmpname == NULL) { | |
535 | printf_P(PSTR("setenv: Out of Memory!\n")); | |
536 | return 1; | |
537 | } | |
538 | strcpy_P(tmpname, varname); | |
539 | } else | |
540 | tmpname = (char *) varname; | |
541 | #endif | |
542 | ||
543 | const char * const argv[3] = { NULL, tmpname, varvalue }; | |
d684c216 L |
544 | int argc = 3; |
545 | ||
546 | if (varvalue == NULL || varvalue[0] == '\0') | |
547 | --argc; | |
7e24905c | 548 | |
c0abd68b L |
549 | rc = (int) _do_env_set(0, argc, (char * const *)argv); |
550 | ||
551 | #ifdef __MEMX | |
552 | free(tmpname); | |
553 | #endif | |
554 | return rc; | |
d684c216 L |
555 | } |
556 | ||
d684c216 L |
557 | /** |
558 | * Set an environment variable to an integer value | |
559 | * | |
f76ca346 L |
560 | * @param name Environment variable to set |
561 | * @param value Value to set it to | |
562 | * @param radix Base | |
d684c216 L |
563 | * @return 0 if ok, 1 on error |
564 | */ | |
f76ca346 L |
565 | static |
566 | int setenv_intval(const MEMX char *name, unsigned long value, int radix) | |
d684c216 | 567 | { |
f76ca346 | 568 | char buf[11]; |
d684c216 | 569 | |
f76ca346 | 570 | ultoa(value, buf, radix); |
d684c216 | 571 | |
f76ca346 L |
572 | return setenv(name, buf); |
573 | } | |
d684c216 L |
574 | |
575 | /** | |
f76ca346 | 576 | * Set an environment variable to a decimal integer value |
d684c216 | 577 | * |
f76ca346 L |
578 | * @param name Environment variable to set |
579 | * @param value Value to set it to | |
d684c216 L |
580 | * @return 0 if ok, 1 on error |
581 | */ | |
f76ca346 | 582 | int setenv_ulong(const MEMX char *name, unsigned long value) |
d684c216 | 583 | { |
f76ca346 L |
584 | return setenv_intval(name, value, 10); |
585 | } | |
586 | ||
d684c216 | 587 | |
f76ca346 L |
588 | /** |
589 | * Set an environment variable to a value in hex | |
590 | * | |
591 | * @param name Environment variable to set | |
592 | * @param value Value to set it to | |
593 | * @return 0 if ok, 1 on error | |
594 | */ | |
595 | int setenv_hex(const MEMX char *name, unsigned long value) | |
596 | { | |
597 | return setenv_intval(name, value, 16); | |
d684c216 L |
598 | } |
599 | ||
35e9ec0c | 600 | |
72f58822 | 601 | /** |
35e9ec0c | 602 | * Decode the integer value of an environment variable and return it. |
72f58822 | 603 | * |
35e9ec0c L |
604 | * @param name Name of environemnt variable |
605 | * @param base Number base to use (normally 10, or 16 for hex) | |
606 | * @param default_val Default value to return if the variable is not | |
607 | * found | |
608 | * @return the decoded value, or default_val if not found | |
72f58822 | 609 | */ |
fc30b18e | 610 | unsigned long getenv_ulong(const MEMX char *name, int base, unsigned long default_val) |
d684c216 | 611 | { |
d684c216 | 612 | unsigned long value; |
35e9ec0c L |
613 | char *vp, *endp; |
614 | ||
615 | env_item_t *ep = envlist_search(name); | |
d684c216 | 616 | |
35e9ec0c | 617 | if (ep != NULL ) { |
55027f3b L |
618 | vp = ep->envvar + strlen(ep->envvar) +1; |
619 | value = strtoul(vp, &endp, base); | |
620 | if (endp != vp) | |
621 | return value; | |
35e9ec0c | 622 | } |
d684c216 | 623 | |
35e9ec0c | 624 | return default_val; |
d684c216 L |
625 | } |
626 | ||
35e9ec0c | 627 | |
be84a704 L |
628 | /* |
629 | * Read an environment variable as a boolean | |
630 | */ | |
631 | bool getenv_yesno(const MEMX char *name) | |
632 | { | |
633 | char *s = getenv_char(name); | |
634 | ||
635 | if (s == NULL) | |
636 | return false; | |
637 | ||
638 | return strchr_P(PSTR("1yYtT"), *s) != NULL; | |
639 | ||
640 | /* | |
641 | return *s == '1' || *s == 'y' || *s == 'Y' || *s == 't' || *s == 'T' ? | |
642 | 1 : 0; | |
643 | */ | |
644 | } | |
645 | ||
f76ca346 L |
646 | command_ret_t do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
647 | { | |
648 | command_ret_t rc = CMD_RET_SUCCESS; | |
649 | ||
650 | (void) cmdtp; (void) flag; | |
651 | ||
652 | if (argc == 1) { | |
653 | /* print all env vars */ | |
654 | int size = env_print(NULL); | |
655 | if (size < 0) | |
656 | return CMD_RET_FAILURE; | |
657 | printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), | |
658 | size, ENV_SIZE); | |
659 | return CMD_RET_SUCCESS; | |
660 | } | |
661 | ||
662 | /* print selected env vars */ | |
663 | for (int i = 1; i < argc; ++i) { | |
664 | int rc = env_print(argv[i]); | |
665 | if (rc < 0) { | |
666 | printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[i]); | |
667 | rc = CMD_RET_FAILURE; | |
668 | } | |
669 | } | |
670 | ||
671 | return rc; | |
672 | } | |
673 | ||
674 | ||
d0581f88 | 675 | command_ret_t do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
d684c216 L |
676 | { |
677 | (void) cmdtp; | |
678 | ||
679 | if (argc < 2) | |
680 | return CMD_RET_USAGE; | |
681 | ||
682 | return _do_env_set(flag, argc, argv); | |
683 | } | |
684 | ||
685 | ||
7e24905c L |
686 | command_ret_t do_env_default(cmd_tbl_t *cmdtp, int flag, |
687 | int argc, char * const argv[]) | |
688 | { | |
689 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
690 | ||
55027f3b L |
691 | uint8_t tmp = env_valid; |
692 | env_valid = 0; | |
693 | ||
7e24905c | 694 | /* Reset the whole environment */ |
55027f3b | 695 | printf_P(PSTR("## Resetting to default environment\n")); |
7e24905c L |
696 | envlist_import(ENVLIST_DELETE); |
697 | ||
55027f3b L |
698 | env_valid = tmp; |
699 | ||
7e24905c L |
700 | return CMD_RET_SUCCESS; |
701 | } | |
702 | ||
55027f3b | 703 | |
d0581f88 | 704 | command_ret_t do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
323398b1 L |
705 | { |
706 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
707 | ||
708 | printf_P(PSTR("Saving Environment ...\n")); | |
d0581f88 | 709 | return saveenv() ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
323398b1 L |
710 | } |
711 | ||
55027f3b | 712 | |
7e24905c | 713 | #if defined(CONFIG_AUTO_COMPLETE) |
d684c216 L |
714 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) |
715 | { | |
716 | ENTRY *match; | |
717 | int found, idx; | |
718 | ||
719 | idx = 0; | |
720 | found = 0; | |
721 | cmdv[0] = NULL; | |
722 | ||
723 | while ((idx = hmatch_r(var, idx, &match, &env_htab))) { | |
724 | int vallen = strlen(match->key) + 1; | |
725 | ||
726 | if (found >= maxv - 2 || bufsz < vallen) | |
727 | break; | |
728 | ||
729 | cmdv[found++] = buf; | |
730 | memcpy(buf, match->key, vallen); | |
731 | buf += vallen; | |
732 | bufsz -= vallen; | |
733 | } | |
734 | ||
735 | qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar); | |
736 | ||
737 | if (idx) | |
738 | cmdv[found++] = "..."; | |
739 | ||
740 | cmdv[found] = NULL; | |
741 | return found; | |
742 | } | |
743 | #endif |