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1 | /* | |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0 | |
5 | */ | |
6 | ||
7 | #include "env.h" | |
8 | #include <avr/eeprom.h> | |
9 | ||
10 | #include "config.h" | |
11 | #include "debug.h" | |
12 | #include "crc.h" | |
13 | #include "getopt-min.h" | |
14 | ||
15 | ||
16 | #define ENV_SIZE (CONFIG_ENV_SIZE - sizeof(uint16_t) -1) | |
17 | #define ACTIVE_FLAG 1 | |
18 | #define OBSOLETE_FLAG 0 | |
19 | ||
20 | #define ENVLIST_DELETE (1<<0) | |
21 | ||
22 | ||
23 | /* | |
24 | * Default Environment | |
25 | */ | |
26 | ||
27 | #define DELIM "\0" | |
28 | ||
29 | const FLASH char default_env[] = { | |
30 | ENV_BAUDRATE "=" "115200" DELIM | |
31 | ENV_BOOTDELAY "=" "3" DELIM | |
32 | ENV_BOOTCMD "=" "pin ${pins}; loadcpm3; go ${startaddress}" DELIM | |
33 | ENV_CPM3_SYSFILE "=" CONFIG_CPM3_SYSFILE DELIM | |
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 | |
37 | "pins" "=" "2,8 low 9 high 3 2" DELIM | |
38 | DELIM | |
39 | }; | |
40 | ||
41 | ||
42 | /* EEPROM storage */ | |
43 | typedef struct environment_s { | |
44 | uint16_t crc; /* CRC16 over data bytes */ | |
45 | uint8_t flags; /* active/obsolete flags */ | |
46 | char data[ENV_SIZE]; /* Environment data */ | |
47 | } env_t; | |
48 | ||
49 | ||
50 | /* */ | |
51 | typedef struct env_item_s { | |
52 | char * envvar; | |
53 | } env_item_t; | |
54 | ||
55 | ||
56 | static uint8_t env_valid; | |
57 | static env_item_t env_list[CONFIG_ENVVAR_MAX]; | |
58 | static int entrycount; | |
59 | ||
60 | ||
61 | static | |
62 | char env_get_char(uint16_t index) | |
63 | { | |
64 | unsigned int off = CONFIG_ENV_OFFSET; | |
65 | char ret; | |
66 | ||
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 + | |
72 | offsetof(env_t, data)); | |
73 | break; | |
74 | ||
75 | default: | |
76 | ret = default_env[index]; | |
77 | } | |
78 | ||
79 | return ret; | |
80 | } | |
81 | ||
82 | ||
83 | static const FLASH char *comp_key; | |
84 | ||
85 | static | |
86 | int comp_env_items(const void *m1, const void *m2) | |
87 | { | |
88 | env_item_t *ep1 = (env_item_t *) m1; | |
89 | env_item_t *ep2 = (env_item_t *) m2; | |
90 | ||
91 | if (ep1 == NULL) | |
92 | return - strcmp_P(ep2->envvar, comp_key); | |
93 | else | |
94 | return strcmp(ep1->envvar, ep2->envvar); | |
95 | } | |
96 | ||
97 | ||
98 | env_item_t *envlist_search(const MEMX char *name) | |
99 | { | |
100 | #ifdef __MEMX | |
101 | if (__builtin_avr_flash_segment(name) != -1) { | |
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); | |
112 | } | |
113 | #else | |
114 | env_item_t e; | |
115 | e.envvar = (char *) name; | |
116 | ||
117 | return bsearch(&e, env_list, entrycount, | |
118 | sizeof(env_item_t), comp_env_items); | |
119 | #endif /* __MEMX */ | |
120 | } | |
121 | ||
122 | ||
123 | static | |
124 | env_item_t *envlist_enter(env_item_t *e) | |
125 | { | |
126 | const size_t size = sizeof(env_item_t); | |
127 | env_item_t *ep; | |
128 | ||
129 | ep = bsearch(e, env_list, entrycount, | |
130 | size, comp_env_items); | |
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); | |
137 | ep = bsearch(e, env_list, entrycount, | |
138 | size, comp_env_items); | |
139 | } | |
140 | } else { | |
141 | free(ep->envvar); | |
142 | ep->envvar = e->envvar; | |
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; | |
154 | ||
155 | free(ep->envvar); | |
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 | |
165 | int envlist_delete(const MEMX char *name) | |
166 | { | |
167 | env_item_t *ep = envlist_search(name); | |
168 | ||
169 | if (ep != NULL) | |
170 | return env_item_delete(ep); | |
171 | ||
172 | return 1; | |
173 | } | |
174 | ||
175 | ||
176 | ||
177 | static | |
178 | int envlist_import(uint8_t flags) | |
179 | { | |
180 | uint16_t index; | |
181 | ||
182 | int len; | |
183 | env_item_t e; | |
184 | char *np, c; | |
185 | uint_fast8_t ef; | |
186 | ||
187 | if ((flags & ENVLIST_DELETE) != 0) | |
188 | while (entrycount != 0) | |
189 | env_item_delete(&env_list[entrycount-1]); | |
190 | ||
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; | |
195 | } | |
196 | ||
197 | np = (char *) malloc(len+1); | |
198 | if (np == NULL) { | |
199 | printf_P(PSTR("## Can't malloc %d bytes\n"), len+1); | |
200 | return 1; | |
201 | } | |
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); | |
214 | } | |
215 | ||
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | ||
221 | static | |
222 | uint16_t env_crc(uint16_t data_offset) | |
223 | { | |
224 | uint16_t crc; | |
225 | uint16_t i; | |
226 | char c, c0; | |
227 | ||
228 | crc = 0xffff; | |
229 | c = 0xff; | |
230 | for (i = 0; !(c == 0 && c0 == 0) && i < ENV_SIZE; i++) | |
231 | { | |
232 | c0 = c; | |
233 | c = eeprom_read_byte((const uint8_t *) data_offset + i); | |
234 | crc = crc16(crc, c); | |
235 | } | |
236 | return crc ; | |
237 | } | |
238 | ||
239 | ||
240 | /** | |
241 | * return valid env | |
242 | */ | |
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 | ); | |
268 | ||
269 | if (!crc_ok[0] && !crc_ok[1]) { | |
270 | rc = 0; | |
271 | ||
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 | |
297 | } | |
298 | ||
299 | return rc; | |
300 | } | |
301 | ||
302 | ||
303 | int env_init(void) | |
304 | { | |
305 | env_valid = env_check_valid(); | |
306 | if (env_valid == 0) { | |
307 | printf_P(PSTR("*** Warning - bad CRC, " | |
308 | "using default environment\n\n")); | |
309 | } | |
310 | ||
311 | envlist_import(ENVLIST_DELETE); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | ||
316 | char *getenv_str(const MEMX char *name) | |
317 | { | |
318 | env_item_t *ep; | |
319 | char *ret = NULL; | |
320 | ||
321 | ep = envlist_search(name); | |
322 | if (ep != NULL) | |
323 | ret = ep->envvar + strlen(ep->envvar) +1; | |
324 | return ret; | |
325 | } | |
326 | ||
327 | static | |
328 | int env_item_save(env_item_t *ep, uint16_t offset, int space_left) | |
329 | { | |
330 | int nlen, vlen; | |
331 | char *var = ep->envvar; | |
332 | ||
333 | nlen = strlen(var); | |
334 | if (nlen == 0) | |
335 | return 0; | |
336 | vlen = strlen(var + nlen + 1); | |
337 | if (vlen == 0) | |
338 | return 0; | |
339 | if (nlen + vlen + 2 > space_left) | |
340 | return 0; | |
341 | ||
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; | |
348 | } | |
349 | ||
350 | ||
351 | static | |
352 | int saveenv(void) | |
353 | { | |
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; | |
360 | ||
361 | if (env_valid == 2) { | |
362 | off = CONFIG_ENV_OFFSET; | |
363 | off_red = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
364 | } | |
365 | ||
366 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), 0xff); | |
367 | ||
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); | |
382 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), | |
383 | ACTIVE_FLAG); | |
384 | ||
385 | if (rc == 0) { | |
386 | eeprom_update_byte((uint8_t *) off_red + offsetof(env_t, flags), | |
387 | OBSOLETE_FLAG); | |
388 | env_valid = (env_valid == 2) ? 1 : 2; | |
389 | } | |
390 | ||
391 | return rc; | |
392 | } | |
393 | ||
394 | ||
395 | static | |
396 | int env_item_print(env_item_t *ep, bool mode) | |
397 | { | |
398 | int len; | |
399 | char *ev = ep->envvar; | |
400 | ||
401 | if (mode) { | |
402 | len = printf_P(PSTR("setenv %s "), ev) - 7; | |
403 | len += printf_P(PSTR("'%s'\n"), ev + len) - 2; | |
404 | } else { | |
405 | len = printf_P(PSTR("%s="), ev); | |
406 | len += printf_P(PSTR("%s\n"), ev + len); | |
407 | } | |
408 | return len; | |
409 | } | |
410 | ||
411 | ||
412 | /* | |
413 | * Command interface: print one or all environment variables | |
414 | * | |
415 | * Returns -1 in case of error, or length of printed string | |
416 | */ | |
417 | static | |
418 | int env_print(const MEMX char *name, bool mode) | |
419 | { | |
420 | int len = -1; | |
421 | ||
422 | if (name) { /* print a single name */ | |
423 | ||
424 | env_item_t *ep = envlist_search(name); | |
425 | if (ep != NULL) | |
426 | len = env_item_print(ep, mode); | |
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], mode); | |
432 | } | |
433 | } | |
434 | return len; | |
435 | } | |
436 | ||
437 | ||
438 | /** | |
439 | * Set or delete environment variable | |
440 | * | |
441 | * Set a new environment variable, | |
442 | * or replace or delete an existing one. | |
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 | |
451 | */ | |
452 | static | |
453 | command_ret_t _do_env_set(uint_fast8_t flag, int argc, char * const argv[]) | |
454 | { | |
455 | int i, len; | |
456 | char *name, *value, *valp, *p; | |
457 | env_item_t e, *ep; | |
458 | ||
459 | (void) flag; | |
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); | |
467 | return CMD_RET_FAILURE; | |
468 | } | |
469 | len = strlen(name); | |
470 | if (len > CONFIG_SYS_ENV_NAMELEN) { | |
471 | printf_P(PSTR("## Error: Variable name \"%s\" too long. " | |
472 | "(max %d characters)\n"), name, CONFIG_SYS_ENV_NAMELEN); | |
473 | return CMD_RET_FAILURE; | |
474 | } | |
475 | /* | |
476 | env_id++; | |
477 | */ | |
478 | /* Delete only ? */ | |
479 | if (argc < 3 || argv[2] == NULL) { | |
480 | int rc = envlist_delete(name); | |
481 | return rc ? CMD_RET_FAILURE : CMD_RET_SUCCESS; | |
482 | } | |
483 | ||
484 | /* | |
485 | * Insert / replace new value | |
486 | */ | |
487 | for (i = 2, len += 1; i < argc; ++i) | |
488 | len += strlen(argv[i]) + 1; | |
489 | ||
490 | value = malloc(len); | |
491 | if (value == NULL) { | |
492 | printf_P(PSTR("## Can't malloc %d bytes\n"), len); | |
493 | return CMD_RET_FAILURE; | |
494 | } | |
495 | strcpy(value, name); | |
496 | valp = value + strlen(name) + 1; | |
497 | for (i = 2, p = valp; i < argc; ++i) { | |
498 | char *v = argv[i]; | |
499 | ||
500 | while ((*p++ = *v++) != '\0') | |
501 | ; | |
502 | *(p - 1) = ' '; | |
503 | } | |
504 | if (p != valp) | |
505 | *--p = '\0'; | |
506 | ||
507 | e.envvar = value; | |
508 | ep = envlist_enter(&e); | |
509 | if (!ep) { | |
510 | printf_P(PSTR("## Error inserting \"%s\" variable.\n"), | |
511 | name); | |
512 | return CMD_RET_FAILURE; | |
513 | } | |
514 | ||
515 | return CMD_RET_SUCCESS; | |
516 | } | |
517 | ||
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 | */ | |
525 | static | |
526 | int setenv(const MEMX char *varname, const char *varvalue) | |
527 | { | |
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 }; | |
544 | int argc = 3; | |
545 | ||
546 | if (varvalue == NULL || varvalue[0] == '\0') | |
547 | --argc; | |
548 | ||
549 | rc = (int) _do_env_set(0, argc, (char * const *)argv); | |
550 | ||
551 | #ifdef __MEMX | |
552 | free(tmpname); | |
553 | #endif | |
554 | return rc; | |
555 | } | |
556 | ||
557 | /** | |
558 | * Set an environment variable to an integer value | |
559 | * | |
560 | * @param name Environment variable to set | |
561 | * @param value Value to set it to | |
562 | * @param radix Base | |
563 | * @return 0 if ok, 1 on error | |
564 | */ | |
565 | static | |
566 | int setenv_intval(const MEMX char *name, unsigned long value, int radix) | |
567 | { | |
568 | char buf[11]; | |
569 | ||
570 | ultoa(value, buf, radix); | |
571 | ||
572 | return setenv(name, buf); | |
573 | } | |
574 | ||
575 | /** | |
576 | * Set an environment variable to a decimal integer value | |
577 | * | |
578 | * @param name Environment variable to set | |
579 | * @param value Value to set it to | |
580 | * @return 0 if ok, 1 on error | |
581 | */ | |
582 | int setenv_ulong(const MEMX char *name, unsigned long value) | |
583 | { | |
584 | return setenv_intval(name, value, 10); | |
585 | } | |
586 | ||
587 | ||
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); | |
598 | } | |
599 | ||
600 | ||
601 | /** | |
602 | * Decode the integer value of an environment variable and return it. | |
603 | * | |
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 | |
609 | */ | |
610 | unsigned long getenv_ulong(const MEMX char *name, int base, unsigned long default_val) | |
611 | { | |
612 | unsigned long value; | |
613 | char *vp, *endp; | |
614 | ||
615 | env_item_t *ep = envlist_search(name); | |
616 | ||
617 | if (ep != NULL ) { | |
618 | vp = ep->envvar + strlen(ep->envvar) +1; | |
619 | value = strtoul(vp, &endp, base); | |
620 | if (endp != vp) | |
621 | return value; | |
622 | } | |
623 | ||
624 | return default_val; | |
625 | } | |
626 | ||
627 | ||
628 | /* | |
629 | * Read an environment variable as a boolean | |
630 | */ | |
631 | bool getenv_yesno(const MEMX char *name) | |
632 | { | |
633 | char *s = getenv_str(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 | ||
646 | command_ret_t do_env_print(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
647 | { | |
648 | (void) cmdtp; (void) flag; | |
649 | ||
650 | bool mode = 0; | |
651 | command_ret_t rc = CMD_RET_SUCCESS; | |
652 | ||
653 | /* reset getopt() */ | |
654 | optind = 0; | |
655 | ||
656 | int opt; | |
657 | while ((opt = getopt(argc, argv, PSTR("s"))) != -1) { | |
658 | switch (opt) { | |
659 | case 's': | |
660 | mode = 1; | |
661 | break; | |
662 | default: /* '?' */ | |
663 | return CMD_RET_USAGE; | |
664 | } | |
665 | } | |
666 | ||
667 | if (optind == argc) { | |
668 | /* print all env vars */ | |
669 | int size = env_print(NULL, mode); | |
670 | if (size < 0) | |
671 | return CMD_RET_FAILURE; | |
672 | if (mode == 0) | |
673 | printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), | |
674 | size, ENV_SIZE); | |
675 | return CMD_RET_SUCCESS; | |
676 | } | |
677 | ||
678 | /* print selected env vars */ | |
679 | while (optind < argc) { | |
680 | int rc = env_print(argv[optind], mode); | |
681 | if (rc < 0) { | |
682 | printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[optind]); | |
683 | rc = CMD_RET_FAILURE; | |
684 | } | |
685 | optind++; | |
686 | } | |
687 | ||
688 | return rc; | |
689 | } | |
690 | ||
691 | ||
692 | command_ret_t do_env_set(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
693 | { | |
694 | (void) cmdtp; | |
695 | ||
696 | if (argc < 2) | |
697 | return CMD_RET_USAGE; | |
698 | ||
699 | return _do_env_set(flag, argc, argv); | |
700 | } | |
701 | ||
702 | ||
703 | command_ret_t do_env_default(cmd_tbl_t *cmdtp, uint_fast8_t flag, | |
704 | int argc, char * const argv[]) | |
705 | { | |
706 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
707 | ||
708 | uint8_t tmp = env_valid; | |
709 | env_valid = 0; | |
710 | ||
711 | /* Reset the whole environment */ | |
712 | printf_P(PSTR("## Resetting to default environment\n")); | |
713 | envlist_import(ENVLIST_DELETE); | |
714 | ||
715 | env_valid = tmp; | |
716 | ||
717 | return CMD_RET_SUCCESS; | |
718 | } | |
719 | ||
720 | ||
721 | command_ret_t do_env_save(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
722 | { | |
723 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
724 | ||
725 | printf_P(PSTR("Saving Environment ...\n")); | |
726 | return saveenv() ? CMD_RET_FAILURE : CMD_RET_SUCCESS; | |
727 | } | |
728 | ||
729 | ||
730 | #if defined(CONFIG_AUTO_COMPLETE) | |
731 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) | |
732 | { | |
733 | ENTRY *match; | |
734 | int found, idx; | |
735 | ||
736 | idx = 0; | |
737 | found = 0; | |
738 | cmdv[0] = NULL; | |
739 | ||
740 | while ((idx = hmatch_r(var, idx, &match, &env_htab))) { | |
741 | int vallen = strlen(match->key) + 1; | |
742 | ||
743 | if (found >= maxv - 2 || bufsz < vallen) | |
744 | break; | |
745 | ||
746 | cmdv[found++] = buf; | |
747 | memcpy(buf, match->key, vallen); | |
748 | buf += vallen; | |
749 | bufsz -= vallen; | |
750 | } | |
751 | ||
752 | qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar); | |
753 | ||
754 | if (idx) | |
755 | cmdv[found++] = "..."; | |
756 | ||
757 | cmdv[found] = NULL; | |
758 | return found; | |
759 | } | |
760 | #endif |