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c609719b WD |
1 | /* |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
501090aa WD |
5 | * Add to readline cmdline-editing by |
6 | * (C) Copyright 2005 | |
7 | * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com> | |
8 | * | |
c609719b WD |
9 | * See file CREDITS for list of people who contributed to this |
10 | * project. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
25 | * MA 02111-1307 USA | |
26 | */ | |
27 | ||
a6c7ad2f WD |
28 | /* #define DEBUG */ |
29 | ||
c609719b WD |
30 | #include <common.h> |
31 | #include <watchdog.h> | |
32 | #include <command.h> | |
d9631ecf WD |
33 | #ifdef CONFIG_MODEM_SUPPORT |
34 | #include <malloc.h> /* for free() prototype */ | |
35 | #endif | |
c609719b WD |
36 | |
37 | #ifdef CFG_HUSH_PARSER | |
38 | #include <hush.h> | |
39 | #endif | |
40 | ||
bdccc4fe WD |
41 | #include <post.h> |
42 | ||
d87080b7 WD |
43 | #ifdef CONFIG_SILENT_CONSOLE |
44 | DECLARE_GLOBAL_DATA_PTR; | |
45 | #endif | |
46 | ||
8bde7f77 WD |
47 | #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY) |
48 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); /* for do_reset() prototype */ | |
49 | #endif | |
50 | ||
51 | extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); | |
52 | ||
53 | ||
c609719b WD |
54 | #define MAX_DELAY_STOP_STR 32 |
55 | ||
c609719b WD |
56 | static int parse_line (char *, char *[]); |
57 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
58 | static int abortboot(int); | |
59 | #endif | |
60 | ||
61 | #undef DEBUG_PARSER | |
62 | ||
63 | char console_buffer[CFG_CBSIZE]; /* console I/O buffer */ | |
64 | ||
3ca9122f SR |
65 | #ifndef CONFIG_CMDLINE_EDITING |
66 | static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); | |
c609719b WD |
67 | static char erase_seq[] = "\b \b"; /* erase sequence */ |
68 | static char tab_seq[] = " "; /* used to expand TABs */ | |
3ca9122f | 69 | #endif /* CONFIG_CMDLINE_EDITING */ |
c609719b WD |
70 | |
71 | #ifdef CONFIG_BOOT_RETRY_TIME | |
72 | static uint64_t endtime = 0; /* must be set, default is instant timeout */ | |
73 | static int retry_time = -1; /* -1 so can call readline before main_loop */ | |
74 | #endif | |
75 | ||
76 | #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) | |
77 | ||
78 | #ifndef CONFIG_BOOT_RETRY_MIN | |
79 | #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME | |
80 | #endif | |
81 | ||
82 | #ifdef CONFIG_MODEM_SUPPORT | |
83 | int do_mdm_init = 0; | |
84 | extern void mdm_init(void); /* defined in board.c */ | |
85 | #endif | |
86 | ||
87 | /*************************************************************************** | |
88 | * Watch for 'delay' seconds for autoboot stop or autoboot delay string. | |
89 | * returns: 0 - no key string, allow autoboot | |
90 | * 1 - got key string, abort | |
91 | */ | |
92 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
93 | # if defined(CONFIG_AUTOBOOT_KEYED) | |
94 | static __inline__ int abortboot(int bootdelay) | |
95 | { | |
96 | int abort = 0; | |
97 | uint64_t etime = endtick(bootdelay); | |
98 | struct | |
99 | { | |
100 | char* str; | |
101 | u_int len; | |
102 | int retry; | |
103 | } | |
104 | delaykey [] = | |
105 | { | |
106 | { str: getenv ("bootdelaykey"), retry: 1 }, | |
107 | { str: getenv ("bootdelaykey2"), retry: 1 }, | |
108 | { str: getenv ("bootstopkey"), retry: 0 }, | |
109 | { str: getenv ("bootstopkey2"), retry: 0 }, | |
110 | }; | |
111 | ||
112 | char presskey [MAX_DELAY_STOP_STR]; | |
113 | u_int presskey_len = 0; | |
114 | u_int presskey_max = 0; | |
115 | u_int i; | |
116 | ||
8cb8143e | 117 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
118 | if (gd->flags & GD_FLG_SILENT) { |
119 | /* Restore serial console */ | |
120 | console_assign (stdout, "serial"); | |
121 | console_assign (stderr, "serial"); | |
8cb8143e | 122 | } |
123 | #endif | |
124 | ||
c609719b WD |
125 | # ifdef CONFIG_AUTOBOOT_PROMPT |
126 | printf (CONFIG_AUTOBOOT_PROMPT, bootdelay); | |
127 | # endif | |
128 | ||
129 | # ifdef CONFIG_AUTOBOOT_DELAY_STR | |
130 | if (delaykey[0].str == NULL) | |
131 | delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; | |
132 | # endif | |
133 | # ifdef CONFIG_AUTOBOOT_DELAY_STR2 | |
134 | if (delaykey[1].str == NULL) | |
135 | delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; | |
136 | # endif | |
137 | # ifdef CONFIG_AUTOBOOT_STOP_STR | |
138 | if (delaykey[2].str == NULL) | |
139 | delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; | |
140 | # endif | |
141 | # ifdef CONFIG_AUTOBOOT_STOP_STR2 | |
142 | if (delaykey[3].str == NULL) | |
143 | delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; | |
144 | # endif | |
145 | ||
146 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { | |
147 | delaykey[i].len = delaykey[i].str == NULL ? | |
148 | 0 : strlen (delaykey[i].str); | |
149 | delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? | |
150 | MAX_DELAY_STOP_STR : delaykey[i].len; | |
151 | ||
152 | presskey_max = presskey_max > delaykey[i].len ? | |
153 | presskey_max : delaykey[i].len; | |
154 | ||
155 | # if DEBUG_BOOTKEYS | |
156 | printf("%s key:<%s>\n", | |
157 | delaykey[i].retry ? "delay" : "stop", | |
158 | delaykey[i].str ? delaykey[i].str : "NULL"); | |
159 | # endif | |
160 | } | |
161 | ||
162 | /* In order to keep up with incoming data, check timeout only | |
163 | * when catch up. | |
164 | */ | |
165 | while (!abort && get_ticks() <= etime) { | |
166 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { | |
167 | if (delaykey[i].len > 0 && | |
168 | presskey_len >= delaykey[i].len && | |
169 | memcmp (presskey + presskey_len - delaykey[i].len, | |
8bde7f77 | 170 | delaykey[i].str, |
c609719b WD |
171 | delaykey[i].len) == 0) { |
172 | # if DEBUG_BOOTKEYS | |
173 | printf("got %skey\n", | |
174 | delaykey[i].retry ? "delay" : "stop"); | |
175 | # endif | |
176 | ||
177 | # ifdef CONFIG_BOOT_RETRY_TIME | |
178 | /* don't retry auto boot */ | |
179 | if (! delaykey[i].retry) | |
180 | retry_time = -1; | |
181 | # endif | |
182 | abort = 1; | |
183 | } | |
184 | } | |
185 | ||
186 | if (tstc()) { | |
187 | if (presskey_len < presskey_max) { | |
188 | presskey [presskey_len ++] = getc(); | |
189 | } | |
190 | else { | |
191 | for (i = 0; i < presskey_max - 1; i ++) | |
192 | presskey [i] = presskey [i + 1]; | |
193 | ||
194 | presskey [i] = getc(); | |
195 | } | |
196 | } | |
197 | } | |
198 | # if DEBUG_BOOTKEYS | |
199 | if (!abort) | |
4b9206ed | 200 | puts ("key timeout\n"); |
c609719b WD |
201 | # endif |
202 | ||
8cb8143e | 203 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
204 | if (abort) { |
205 | /* permanently enable normal console output */ | |
206 | gd->flags &= ~(GD_FLG_SILENT); | |
207 | } else if (gd->flags & GD_FLG_SILENT) { | |
208 | /* Restore silent console */ | |
209 | console_assign (stdout, "nulldev"); | |
210 | console_assign (stderr, "nulldev"); | |
8cb8143e | 211 | } |
212 | #endif | |
213 | ||
c609719b WD |
214 | return abort; |
215 | } | |
216 | ||
217 | # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ | |
218 | ||
c7de829c WD |
219 | #ifdef CONFIG_MENUKEY |
220 | static int menukey = 0; | |
221 | #endif | |
222 | ||
c609719b WD |
223 | static __inline__ int abortboot(int bootdelay) |
224 | { | |
225 | int abort = 0; | |
226 | ||
f72da340 | 227 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
228 | if (gd->flags & GD_FLG_SILENT) { |
229 | /* Restore serial console */ | |
230 | console_assign (stdout, "serial"); | |
231 | console_assign (stderr, "serial"); | |
f72da340 WD |
232 | } |
233 | #endif | |
234 | ||
c7de829c WD |
235 | #ifdef CONFIG_MENUPROMPT |
236 | printf(CONFIG_MENUPROMPT, bootdelay); | |
237 | #else | |
c609719b | 238 | printf("Hit any key to stop autoboot: %2d ", bootdelay); |
c7de829c | 239 | #endif |
c609719b WD |
240 | |
241 | #if defined CONFIG_ZERO_BOOTDELAY_CHECK | |
8bde7f77 WD |
242 | /* |
243 | * Check if key already pressed | |
244 | * Don't check if bootdelay < 0 | |
245 | */ | |
c609719b WD |
246 | if (bootdelay >= 0) { |
247 | if (tstc()) { /* we got a key press */ | |
248 | (void) getc(); /* consume input */ | |
4b9206ed | 249 | puts ("\b\b\b 0"); |
f72da340 | 250 | abort = 1; /* don't auto boot */ |
c609719b | 251 | } |
8bde7f77 | 252 | } |
c609719b WD |
253 | #endif |
254 | ||
f72da340 | 255 | while ((bootdelay > 0) && (!abort)) { |
c609719b WD |
256 | int i; |
257 | ||
258 | --bootdelay; | |
259 | /* delay 100 * 10ms */ | |
260 | for (i=0; !abort && i<100; ++i) { | |
261 | if (tstc()) { /* we got a key press */ | |
262 | abort = 1; /* don't auto boot */ | |
263 | bootdelay = 0; /* no more delay */ | |
c7de829c WD |
264 | # ifdef CONFIG_MENUKEY |
265 | menukey = getc(); | |
266 | # else | |
c609719b | 267 | (void) getc(); /* consume input */ |
c7de829c | 268 | # endif |
c609719b WD |
269 | break; |
270 | } | |
271 | udelay (10000); | |
272 | } | |
273 | ||
274 | printf ("\b\b\b%2d ", bootdelay); | |
275 | } | |
276 | ||
277 | putc ('\n'); | |
278 | ||
f72da340 | 279 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
280 | if (abort) { |
281 | /* permanently enable normal console output */ | |
282 | gd->flags &= ~(GD_FLG_SILENT); | |
283 | } else if (gd->flags & GD_FLG_SILENT) { | |
284 | /* Restore silent console */ | |
285 | console_assign (stdout, "nulldev"); | |
286 | console_assign (stderr, "nulldev"); | |
f72da340 WD |
287 | } |
288 | #endif | |
289 | ||
c609719b WD |
290 | return abort; |
291 | } | |
292 | # endif /* CONFIG_AUTOBOOT_KEYED */ | |
293 | #endif /* CONFIG_BOOTDELAY >= 0 */ | |
294 | ||
295 | /****************************************************************************/ | |
296 | ||
297 | void main_loop (void) | |
298 | { | |
299 | #ifndef CFG_HUSH_PARSER | |
300 | static char lastcommand[CFG_CBSIZE] = { 0, }; | |
301 | int len; | |
302 | int rc = 1; | |
303 | int flag; | |
304 | #endif | |
305 | ||
306 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
307 | char *s; | |
308 | int bootdelay; | |
309 | #endif | |
310 | #ifdef CONFIG_PREBOOT | |
311 | char *p; | |
312 | #endif | |
bdccc4fe WD |
313 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
314 | unsigned long bootcount = 0; | |
315 | unsigned long bootlimit = 0; | |
316 | char *bcs; | |
317 | char bcs_set[16]; | |
318 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
c609719b WD |
319 | |
320 | #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO) | |
321 | ulong bmp = 0; /* default bitmap */ | |
322 | extern int trab_vfd (ulong bitmap); | |
323 | ||
324 | #ifdef CONFIG_MODEM_SUPPORT | |
325 | if (do_mdm_init) | |
326 | bmp = 1; /* alternate bitmap */ | |
327 | #endif | |
328 | trab_vfd (bmp); | |
329 | #endif /* CONFIG_VFD && VFD_TEST_LOGO */ | |
330 | ||
bdccc4fe WD |
331 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
332 | bootcount = bootcount_load(); | |
333 | bootcount++; | |
334 | bootcount_store (bootcount); | |
335 | sprintf (bcs_set, "%lu", bootcount); | |
336 | setenv ("bootcount", bcs_set); | |
337 | bcs = getenv ("bootlimit"); | |
338 | bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; | |
339 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
340 | ||
c609719b WD |
341 | #ifdef CONFIG_MODEM_SUPPORT |
342 | debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); | |
343 | if (do_mdm_init) { | |
77ddac94 | 344 | char *str = strdup(getenv("mdm_cmd")); |
c609719b WD |
345 | setenv ("preboot", str); /* set or delete definition */ |
346 | if (str != NULL) | |
347 | free (str); | |
348 | mdm_init(); /* wait for modem connection */ | |
349 | } | |
350 | #endif /* CONFIG_MODEM_SUPPORT */ | |
351 | ||
0587597c SR |
352 | #ifdef CONFIG_VERSION_VARIABLE |
353 | { | |
354 | extern char version_string[]; | |
0587597c | 355 | |
155cb010 | 356 | setenv ("ver", version_string); /* set version variable */ |
0587597c SR |
357 | } |
358 | #endif /* CONFIG_VERSION_VARIABLE */ | |
359 | ||
c609719b WD |
360 | #ifdef CFG_HUSH_PARSER |
361 | u_boot_hush_start (); | |
362 | #endif | |
363 | ||
04a85b3b WD |
364 | #ifdef CONFIG_AUTO_COMPLETE |
365 | install_auto_complete(); | |
366 | #endif | |
367 | ||
c609719b WD |
368 | #ifdef CONFIG_PREBOOT |
369 | if ((p = getenv ("preboot")) != NULL) { | |
370 | # ifdef CONFIG_AUTOBOOT_KEYED | |
371 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
372 | # endif | |
373 | ||
374 | # ifndef CFG_HUSH_PARSER | |
375 | run_command (p, 0); | |
376 | # else | |
377 | parse_string_outer(p, FLAG_PARSE_SEMICOLON | | |
378 | FLAG_EXIT_FROM_LOOP); | |
379 | # endif | |
380 | ||
381 | # ifdef CONFIG_AUTOBOOT_KEYED | |
382 | disable_ctrlc(prev); /* restore Control C checking */ | |
383 | # endif | |
384 | } | |
385 | #endif /* CONFIG_PREBOOT */ | |
386 | ||
387 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
388 | s = getenv ("bootdelay"); | |
389 | bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; | |
390 | ||
a6c7ad2f | 391 | debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); |
c609719b WD |
392 | |
393 | # ifdef CONFIG_BOOT_RETRY_TIME | |
6dd652fa | 394 | init_cmd_timeout (); |
c609719b WD |
395 | # endif /* CONFIG_BOOT_RETRY_TIME */ |
396 | ||
bdccc4fe WD |
397 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
398 | if (bootlimit && (bootcount > bootlimit)) { | |
399 | printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", | |
400 | (unsigned)bootlimit); | |
401 | s = getenv ("altbootcmd"); | |
402 | } | |
403 | else | |
404 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
405 | s = getenv ("bootcmd"); | |
a6c7ad2f WD |
406 | |
407 | debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); | |
408 | ||
c609719b WD |
409 | if (bootdelay >= 0 && s && !abortboot (bootdelay)) { |
410 | # ifdef CONFIG_AUTOBOOT_KEYED | |
411 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
412 | # endif | |
413 | ||
414 | # ifndef CFG_HUSH_PARSER | |
415 | run_command (s, 0); | |
416 | # else | |
417 | parse_string_outer(s, FLAG_PARSE_SEMICOLON | | |
418 | FLAG_EXIT_FROM_LOOP); | |
419 | # endif | |
420 | ||
421 | # ifdef CONFIG_AUTOBOOT_KEYED | |
422 | disable_ctrlc(prev); /* restore Control C checking */ | |
423 | # endif | |
424 | } | |
c7de829c WD |
425 | |
426 | # ifdef CONFIG_MENUKEY | |
a6c7ad2f | 427 | if (menukey == CONFIG_MENUKEY) { |
c7de829c | 428 | s = getenv("menucmd"); |
a6c7ad2f | 429 | if (s) { |
c7de829c | 430 | # ifndef CFG_HUSH_PARSER |
6225c5db | 431 | run_command (s, 0); |
c7de829c WD |
432 | # else |
433 | parse_string_outer(s, FLAG_PARSE_SEMICOLON | | |
434 | FLAG_EXIT_FROM_LOOP); | |
435 | # endif | |
436 | } | |
437 | } | |
438 | #endif /* CONFIG_MENUKEY */ | |
c609719b WD |
439 | #endif /* CONFIG_BOOTDELAY */ |
440 | ||
c7de829c WD |
441 | #ifdef CONFIG_AMIGAONEG3SE |
442 | { | |
443 | extern void video_banner(void); | |
444 | video_banner(); | |
445 | } | |
446 | #endif | |
447 | ||
c609719b WD |
448 | /* |
449 | * Main Loop for Monitor Command Processing | |
450 | */ | |
451 | #ifdef CFG_HUSH_PARSER | |
452 | parse_file_outer(); | |
453 | /* This point is never reached */ | |
454 | for (;;); | |
455 | #else | |
456 | for (;;) { | |
457 | #ifdef CONFIG_BOOT_RETRY_TIME | |
458 | if (rc >= 0) { | |
459 | /* Saw enough of a valid command to | |
460 | * restart the timeout. | |
461 | */ | |
462 | reset_cmd_timeout(); | |
463 | } | |
464 | #endif | |
465 | len = readline (CFG_PROMPT); | |
466 | ||
467 | flag = 0; /* assume no special flags for now */ | |
468 | if (len > 0) | |
469 | strcpy (lastcommand, console_buffer); | |
470 | else if (len == 0) | |
471 | flag |= CMD_FLAG_REPEAT; | |
472 | #ifdef CONFIG_BOOT_RETRY_TIME | |
473 | else if (len == -2) { | |
474 | /* -2 means timed out, retry autoboot | |
475 | */ | |
4b9206ed | 476 | puts ("\nTimed out waiting for command\n"); |
c609719b WD |
477 | # ifdef CONFIG_RESET_TO_RETRY |
478 | /* Reinit board to run initialization code again */ | |
479 | do_reset (NULL, 0, 0, NULL); | |
480 | # else | |
481 | return; /* retry autoboot */ | |
482 | # endif | |
483 | } | |
484 | #endif | |
485 | ||
486 | if (len == -1) | |
4b9206ed | 487 | puts ("<INTERRUPT>\n"); |
c609719b WD |
488 | else |
489 | rc = run_command (lastcommand, flag); | |
490 | ||
491 | if (rc <= 0) { | |
492 | /* invalid command or not repeatable, forget it */ | |
493 | lastcommand[0] = 0; | |
494 | } | |
495 | } | |
496 | #endif /*CFG_HUSH_PARSER*/ | |
497 | } | |
498 | ||
6dd652fa WD |
499 | #ifdef CONFIG_BOOT_RETRY_TIME |
500 | /*************************************************************************** | |
501 | * initialise command line timeout | |
502 | */ | |
503 | void init_cmd_timeout(void) | |
504 | { | |
505 | char *s = getenv ("bootretry"); | |
506 | ||
507 | if (s != NULL) | |
b028f715 | 508 | retry_time = (int)simple_strtol(s, NULL, 10); |
6dd652fa WD |
509 | else |
510 | retry_time = CONFIG_BOOT_RETRY_TIME; | |
511 | ||
512 | if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) | |
513 | retry_time = CONFIG_BOOT_RETRY_MIN; | |
514 | } | |
515 | ||
c609719b WD |
516 | /*************************************************************************** |
517 | * reset command line timeout to retry_time seconds | |
518 | */ | |
c609719b WD |
519 | void reset_cmd_timeout(void) |
520 | { | |
521 | endtime = endtick(retry_time); | |
522 | } | |
523 | #endif | |
524 | ||
501090aa WD |
525 | #ifdef CONFIG_CMDLINE_EDITING |
526 | ||
527 | /* | |
528 | * cmdline-editing related codes from vivi. | |
529 | * Author: Janghoon Lyu <nandy@mizi.com> | |
530 | */ | |
531 | ||
532 | #if 1 /* avoid redundand code -- wd */ | |
533 | #define putnstr(str,n) do { \ | |
534 | printf ("%.*s", n, str); \ | |
535 | } while (0) | |
536 | #else | |
537 | void putnstr(const char *str, size_t n) | |
538 | { | |
539 | if (str == NULL) | |
540 | return; | |
541 | ||
542 | while (n && *str != '\0') { | |
543 | putc(*str); | |
544 | str++; | |
545 | n--; | |
546 | } | |
547 | } | |
548 | #endif | |
549 | ||
550 | #define CTL_CH(c) ((c) - 'a' + 1) | |
551 | ||
552 | #define MAX_CMDBUF_SIZE 256 | |
553 | ||
554 | #define CTL_BACKSPACE ('\b') | |
555 | #define DEL ((char)255) | |
556 | #define DEL7 ((char)127) | |
557 | #define CREAD_HIST_CHAR ('!') | |
558 | ||
559 | #define getcmd_putch(ch) putc(ch) | |
560 | #define getcmd_getch() getc() | |
561 | #define getcmd_cbeep() getcmd_putch('\a') | |
562 | ||
563 | #define HIST_MAX 20 | |
564 | #define HIST_SIZE MAX_CMDBUF_SIZE | |
565 | ||
566 | static int hist_max = 0; | |
567 | static int hist_add_idx = 0; | |
568 | static int hist_cur = -1; | |
569 | unsigned hist_num = 0; | |
570 | ||
571 | char* hist_list[HIST_MAX]; | |
572 | char hist_lines[HIST_MAX][HIST_SIZE]; | |
573 | ||
574 | #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) | |
575 | ||
576 | static void hist_init(void) | |
577 | { | |
578 | int i; | |
579 | ||
580 | hist_max = 0; | |
581 | hist_add_idx = 0; | |
582 | hist_cur = -1; | |
583 | hist_num = 0; | |
584 | ||
585 | for (i = 0; i < HIST_MAX; i++) { | |
586 | hist_list[i] = hist_lines[i]; | |
587 | hist_list[i][0] = '\0'; | |
588 | } | |
589 | } | |
590 | ||
591 | static void cread_add_to_hist(char *line) | |
592 | { | |
593 | strcpy(hist_list[hist_add_idx], line); | |
594 | ||
595 | if (++hist_add_idx >= HIST_MAX) | |
596 | hist_add_idx = 0; | |
597 | ||
598 | if (hist_add_idx > hist_max) | |
599 | hist_max = hist_add_idx; | |
600 | ||
601 | hist_num++; | |
602 | } | |
603 | ||
604 | static char* hist_prev(void) | |
605 | { | |
606 | char *ret; | |
607 | int old_cur; | |
608 | ||
609 | if (hist_cur < 0) | |
610 | return NULL; | |
611 | ||
612 | old_cur = hist_cur; | |
613 | if (--hist_cur < 0) | |
614 | hist_cur = hist_max; | |
615 | ||
616 | if (hist_cur == hist_add_idx) { | |
617 | hist_cur = old_cur; | |
618 | ret = NULL; | |
619 | } else | |
620 | ret = hist_list[hist_cur]; | |
621 | ||
622 | return (ret); | |
623 | } | |
624 | ||
625 | static char* hist_next(void) | |
626 | { | |
627 | char *ret; | |
628 | ||
629 | if (hist_cur < 0) | |
630 | return NULL; | |
631 | ||
632 | if (hist_cur == hist_add_idx) | |
633 | return NULL; | |
634 | ||
635 | if (++hist_cur > hist_max) | |
636 | hist_cur = 0; | |
637 | ||
638 | if (hist_cur == hist_add_idx) { | |
639 | ret = ""; | |
640 | } else | |
641 | ret = hist_list[hist_cur]; | |
642 | ||
643 | return (ret); | |
644 | } | |
645 | ||
3ca9122f | 646 | #ifndef CONFIG_CMDLINE_EDITING |
501090aa WD |
647 | static void cread_print_hist_list(void) |
648 | { | |
649 | int i; | |
650 | unsigned long n; | |
651 | ||
652 | n = hist_num - hist_max; | |
653 | ||
654 | i = hist_add_idx + 1; | |
655 | while (1) { | |
656 | if (i > hist_max) | |
657 | i = 0; | |
658 | if (i == hist_add_idx) | |
659 | break; | |
660 | printf("%s\n", hist_list[i]); | |
661 | n++; | |
662 | i++; | |
663 | } | |
664 | } | |
3ca9122f | 665 | #endif /* CONFIG_CMDLINE_EDITING */ |
501090aa WD |
666 | |
667 | #define BEGINNING_OF_LINE() { \ | |
668 | while (num) { \ | |
669 | getcmd_putch(CTL_BACKSPACE); \ | |
670 | num--; \ | |
671 | } \ | |
672 | } | |
673 | ||
674 | #define ERASE_TO_EOL() { \ | |
675 | if (num < eol_num) { \ | |
676 | int tmp; \ | |
677 | for (tmp = num; tmp < eol_num; tmp++) \ | |
678 | getcmd_putch(' '); \ | |
679 | while (tmp-- > num) \ | |
680 | getcmd_putch(CTL_BACKSPACE); \ | |
681 | eol_num = num; \ | |
682 | } \ | |
683 | } | |
684 | ||
685 | #define REFRESH_TO_EOL() { \ | |
686 | if (num < eol_num) { \ | |
687 | wlen = eol_num - num; \ | |
688 | putnstr(buf + num, wlen); \ | |
689 | num = eol_num; \ | |
690 | } \ | |
691 | } | |
692 | ||
693 | static void cread_add_char(char ichar, int insert, unsigned long *num, | |
694 | unsigned long *eol_num, char *buf, unsigned long len) | |
695 | { | |
696 | unsigned long wlen; | |
697 | ||
698 | /* room ??? */ | |
699 | if (insert || *num == *eol_num) { | |
700 | if (*eol_num > len - 1) { | |
701 | getcmd_cbeep(); | |
702 | return; | |
703 | } | |
704 | (*eol_num)++; | |
705 | } | |
706 | ||
707 | if (insert) { | |
708 | wlen = *eol_num - *num; | |
709 | if (wlen > 1) { | |
710 | memmove(&buf[*num+1], &buf[*num], wlen-1); | |
711 | } | |
712 | ||
713 | buf[*num] = ichar; | |
714 | putnstr(buf + *num, wlen); | |
715 | (*num)++; | |
716 | while (--wlen) { | |
717 | getcmd_putch(CTL_BACKSPACE); | |
718 | } | |
719 | } else { | |
720 | /* echo the character */ | |
721 | wlen = 1; | |
722 | buf[*num] = ichar; | |
723 | putnstr(buf + *num, wlen); | |
724 | (*num)++; | |
725 | } | |
726 | } | |
727 | ||
728 | static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, | |
729 | unsigned long *eol_num, char *buf, unsigned long len) | |
730 | { | |
731 | while (strsize--) { | |
732 | cread_add_char(*str, insert, num, eol_num, buf, len); | |
733 | str++; | |
734 | } | |
735 | } | |
736 | ||
737 | static int cread_line(char *buf, unsigned int *len) | |
738 | { | |
739 | unsigned long num = 0; | |
740 | unsigned long eol_num = 0; | |
741 | unsigned long rlen; | |
742 | unsigned long wlen; | |
743 | char ichar; | |
744 | int insert = 1; | |
745 | int esc_len = 0; | |
746 | int rc = 0; | |
747 | char esc_save[8]; | |
748 | ||
749 | while (1) { | |
750 | rlen = 1; | |
751 | ichar = getcmd_getch(); | |
752 | ||
753 | if ((ichar == '\n') || (ichar == '\r')) { | |
dd9f06f0 | 754 | putc('\n'); |
501090aa WD |
755 | break; |
756 | } | |
757 | ||
758 | /* | |
759 | * handle standard linux xterm esc sequences for arrow key, etc. | |
760 | */ | |
761 | if (esc_len != 0) { | |
762 | if (esc_len == 1) { | |
763 | if (ichar == '[') { | |
764 | esc_save[esc_len] = ichar; | |
765 | esc_len = 2; | |
766 | } else { | |
767 | cread_add_str(esc_save, esc_len, insert, | |
768 | &num, &eol_num, buf, *len); | |
769 | esc_len = 0; | |
770 | } | |
771 | continue; | |
772 | } | |
773 | ||
774 | switch (ichar) { | |
775 | ||
776 | case 'D': /* <- key */ | |
777 | ichar = CTL_CH('b'); | |
778 | esc_len = 0; | |
779 | break; | |
780 | case 'C': /* -> key */ | |
781 | ichar = CTL_CH('f'); | |
782 | esc_len = 0; | |
783 | break; /* pass off to ^F handler */ | |
784 | case 'H': /* Home key */ | |
785 | ichar = CTL_CH('a'); | |
786 | esc_len = 0; | |
787 | break; /* pass off to ^A handler */ | |
788 | case 'A': /* up arrow */ | |
789 | ichar = CTL_CH('p'); | |
790 | esc_len = 0; | |
791 | break; /* pass off to ^P handler */ | |
792 | case 'B': /* down arrow */ | |
793 | ichar = CTL_CH('n'); | |
794 | esc_len = 0; | |
795 | break; /* pass off to ^N handler */ | |
796 | default: | |
797 | esc_save[esc_len++] = ichar; | |
798 | cread_add_str(esc_save, esc_len, insert, | |
799 | &num, &eol_num, buf, *len); | |
800 | esc_len = 0; | |
801 | continue; | |
802 | } | |
803 | } | |
804 | ||
805 | switch (ichar) { | |
806 | case 0x1b: | |
807 | if (esc_len == 0) { | |
808 | esc_save[esc_len] = ichar; | |
809 | esc_len = 1; | |
810 | } else { | |
dd9f06f0 | 811 | puts("impossible condition #876\n"); |
501090aa WD |
812 | esc_len = 0; |
813 | } | |
814 | break; | |
815 | ||
816 | case CTL_CH('a'): | |
817 | BEGINNING_OF_LINE(); | |
818 | break; | |
819 | case CTL_CH('c'): /* ^C - break */ | |
820 | *buf = '\0'; /* discard input */ | |
821 | return (-1); | |
822 | case CTL_CH('f'): | |
823 | if (num < eol_num) { | |
824 | getcmd_putch(buf[num]); | |
825 | num++; | |
826 | } | |
827 | break; | |
828 | case CTL_CH('b'): | |
829 | if (num) { | |
830 | getcmd_putch(CTL_BACKSPACE); | |
831 | num--; | |
832 | } | |
833 | break; | |
834 | case CTL_CH('d'): | |
835 | if (num < eol_num) { | |
836 | wlen = eol_num - num - 1; | |
837 | if (wlen) { | |
838 | memmove(&buf[num], &buf[num+1], wlen); | |
839 | putnstr(buf + num, wlen); | |
840 | } | |
841 | ||
842 | getcmd_putch(' '); | |
843 | do { | |
844 | getcmd_putch(CTL_BACKSPACE); | |
845 | } while (wlen--); | |
846 | eol_num--; | |
847 | } | |
848 | break; | |
849 | case CTL_CH('k'): | |
850 | ERASE_TO_EOL(); | |
851 | break; | |
852 | case CTL_CH('e'): | |
853 | REFRESH_TO_EOL(); | |
854 | break; | |
855 | case CTL_CH('o'): | |
856 | insert = !insert; | |
857 | break; | |
858 | case CTL_CH('x'): | |
859 | BEGINNING_OF_LINE(); | |
860 | ERASE_TO_EOL(); | |
861 | break; | |
862 | case DEL: | |
863 | case DEL7: | |
864 | case 8: | |
865 | if (num) { | |
866 | wlen = eol_num - num; | |
867 | num--; | |
868 | memmove(&buf[num], &buf[num+1], wlen); | |
869 | getcmd_putch(CTL_BACKSPACE); | |
870 | putnstr(buf + num, wlen); | |
871 | getcmd_putch(' '); | |
872 | do { | |
873 | getcmd_putch(CTL_BACKSPACE); | |
874 | } while (wlen--); | |
875 | eol_num--; | |
876 | } | |
877 | break; | |
878 | case CTL_CH('p'): | |
879 | case CTL_CH('n'): | |
880 | { | |
881 | char * hline; | |
882 | ||
883 | esc_len = 0; | |
884 | ||
885 | if (ichar == CTL_CH('p')) | |
886 | hline = hist_prev(); | |
887 | else | |
888 | hline = hist_next(); | |
889 | ||
890 | if (!hline) { | |
891 | getcmd_cbeep(); | |
892 | continue; | |
893 | } | |
894 | ||
895 | /* nuke the current line */ | |
896 | /* first, go home */ | |
897 | BEGINNING_OF_LINE(); | |
898 | ||
899 | /* erase to end of line */ | |
900 | ERASE_TO_EOL(); | |
901 | ||
902 | /* copy new line into place and display */ | |
903 | strcpy(buf, hline); | |
904 | eol_num = strlen(buf); | |
905 | REFRESH_TO_EOL(); | |
906 | continue; | |
907 | } | |
908 | default: | |
909 | cread_add_char(ichar, insert, &num, &eol_num, buf, *len); | |
910 | break; | |
911 | } | |
912 | } | |
913 | *len = eol_num; | |
914 | buf[eol_num] = '\0'; /* lose the newline */ | |
915 | ||
916 | if (buf[0] && buf[0] != CREAD_HIST_CHAR) | |
917 | cread_add_to_hist(buf); | |
918 | hist_cur = hist_add_idx; | |
919 | ||
920 | return (rc); | |
921 | } | |
922 | ||
923 | #endif /* CONFIG_CMDLINE_EDITING */ | |
924 | ||
c609719b WD |
925 | /****************************************************************************/ |
926 | ||
927 | /* | |
928 | * Prompt for input and read a line. | |
929 | * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, | |
930 | * time out when time goes past endtime (timebase time in ticks). | |
931 | * Return: number of read characters | |
932 | * -1 if break | |
933 | * -2 if timed out | |
934 | */ | |
935 | int readline (const char *const prompt) | |
936 | { | |
501090aa WD |
937 | #ifdef CONFIG_CMDLINE_EDITING |
938 | char *p = console_buffer; | |
939 | unsigned int len=MAX_CMDBUF_SIZE; | |
940 | static int initted = 0; | |
941 | ||
942 | if (!initted) { | |
943 | hist_init(); | |
944 | initted = 1; | |
945 | } | |
946 | ||
dd9f06f0 | 947 | puts (prompt); |
501090aa | 948 | |
3ca9122f SR |
949 | cread_line(p, &len); |
950 | return len; | |
501090aa | 951 | #else |
c609719b WD |
952 | char *p = console_buffer; |
953 | int n = 0; /* buffer index */ | |
954 | int plen = 0; /* prompt length */ | |
955 | int col; /* output column cnt */ | |
956 | char c; | |
957 | ||
958 | /* print prompt */ | |
959 | if (prompt) { | |
960 | plen = strlen (prompt); | |
961 | puts (prompt); | |
962 | } | |
963 | col = plen; | |
964 | ||
965 | for (;;) { | |
966 | #ifdef CONFIG_BOOT_RETRY_TIME | |
967 | while (!tstc()) { /* while no incoming data */ | |
968 | if (retry_time >= 0 && get_ticks() > endtime) | |
969 | return (-2); /* timed out */ | |
970 | } | |
971 | #endif | |
972 | WATCHDOG_RESET(); /* Trigger watchdog, if needed */ | |
973 | ||
974 | #ifdef CONFIG_SHOW_ACTIVITY | |
975 | while (!tstc()) { | |
976 | extern void show_activity(int arg); | |
977 | show_activity(0); | |
978 | } | |
979 | #endif | |
980 | c = getc(); | |
981 | ||
982 | /* | |
983 | * Special character handling | |
984 | */ | |
985 | switch (c) { | |
986 | case '\r': /* Enter */ | |
987 | case '\n': | |
988 | *p = '\0'; | |
989 | puts ("\r\n"); | |
990 | return (p - console_buffer); | |
991 | ||
27aa8186 WD |
992 | case '\0': /* nul */ |
993 | continue; | |
994 | ||
c609719b WD |
995 | case 0x03: /* ^C - break */ |
996 | console_buffer[0] = '\0'; /* discard input */ | |
997 | return (-1); | |
998 | ||
999 | case 0x15: /* ^U - erase line */ | |
1000 | while (col > plen) { | |
1001 | puts (erase_seq); | |
1002 | --col; | |
1003 | } | |
1004 | p = console_buffer; | |
1005 | n = 0; | |
1006 | continue; | |
1007 | ||
1008 | case 0x17: /* ^W - erase word */ | |
1009 | p=delete_char(console_buffer, p, &col, &n, plen); | |
1010 | while ((n > 0) && (*p != ' ')) { | |
1011 | p=delete_char(console_buffer, p, &col, &n, plen); | |
1012 | } | |
1013 | continue; | |
1014 | ||
1015 | case 0x08: /* ^H - backspace */ | |
1016 | case 0x7F: /* DEL - backspace */ | |
1017 | p=delete_char(console_buffer, p, &col, &n, plen); | |
1018 | continue; | |
1019 | ||
1020 | default: | |
1021 | /* | |
1022 | * Must be a normal character then | |
1023 | */ | |
1024 | if (n < CFG_CBSIZE-2) { | |
1025 | if (c == '\t') { /* expand TABs */ | |
04a85b3b WD |
1026 | #ifdef CONFIG_AUTO_COMPLETE |
1027 | /* if auto completion triggered just continue */ | |
1028 | *p = '\0'; | |
1029 | if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { | |
1030 | p = console_buffer + n; /* reset */ | |
1031 | continue; | |
1032 | } | |
1033 | #endif | |
c609719b WD |
1034 | puts (tab_seq+(col&07)); |
1035 | col += 8 - (col&07); | |
1036 | } else { | |
1037 | ++col; /* echo input */ | |
1038 | putc (c); | |
1039 | } | |
1040 | *p++ = c; | |
1041 | ++n; | |
1042 | } else { /* Buffer full */ | |
1043 | putc ('\a'); | |
1044 | } | |
1045 | } | |
1046 | } | |
501090aa | 1047 | #endif /* CONFIG_CMDLINE_EDITING */ |
c609719b WD |
1048 | } |
1049 | ||
1050 | /****************************************************************************/ | |
1051 | ||
3ca9122f | 1052 | #ifndef CONFIG_CMDLINE_EDITING |
c609719b WD |
1053 | static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) |
1054 | { | |
1055 | char *s; | |
1056 | ||
1057 | if (*np == 0) { | |
1058 | return (p); | |
1059 | } | |
1060 | ||
1061 | if (*(--p) == '\t') { /* will retype the whole line */ | |
1062 | while (*colp > plen) { | |
1063 | puts (erase_seq); | |
1064 | (*colp)--; | |
1065 | } | |
1066 | for (s=buffer; s<p; ++s) { | |
1067 | if (*s == '\t') { | |
1068 | puts (tab_seq+((*colp) & 07)); | |
1069 | *colp += 8 - ((*colp) & 07); | |
1070 | } else { | |
1071 | ++(*colp); | |
1072 | putc (*s); | |
1073 | } | |
1074 | } | |
1075 | } else { | |
1076 | puts (erase_seq); | |
1077 | (*colp)--; | |
1078 | } | |
1079 | (*np)--; | |
1080 | return (p); | |
1081 | } | |
3ca9122f | 1082 | #endif /* CONFIG_CMDLINE_EDITING */ |
c609719b WD |
1083 | |
1084 | /****************************************************************************/ | |
1085 | ||
1086 | int parse_line (char *line, char *argv[]) | |
1087 | { | |
1088 | int nargs = 0; | |
1089 | ||
1090 | #ifdef DEBUG_PARSER | |
1091 | printf ("parse_line: \"%s\"\n", line); | |
1092 | #endif | |
1093 | while (nargs < CFG_MAXARGS) { | |
1094 | ||
1095 | /* skip any white space */ | |
1096 | while ((*line == ' ') || (*line == '\t')) { | |
1097 | ++line; | |
1098 | } | |
1099 | ||
1100 | if (*line == '\0') { /* end of line, no more args */ | |
1101 | argv[nargs] = NULL; | |
1102 | #ifdef DEBUG_PARSER | |
1103 | printf ("parse_line: nargs=%d\n", nargs); | |
1104 | #endif | |
1105 | return (nargs); | |
1106 | } | |
1107 | ||
1108 | argv[nargs++] = line; /* begin of argument string */ | |
1109 | ||
1110 | /* find end of string */ | |
1111 | while (*line && (*line != ' ') && (*line != '\t')) { | |
1112 | ++line; | |
1113 | } | |
1114 | ||
1115 | if (*line == '\0') { /* end of line, no more args */ | |
1116 | argv[nargs] = NULL; | |
1117 | #ifdef DEBUG_PARSER | |
1118 | printf ("parse_line: nargs=%d\n", nargs); | |
1119 | #endif | |
1120 | return (nargs); | |
1121 | } | |
1122 | ||
1123 | *line++ = '\0'; /* terminate current arg */ | |
1124 | } | |
1125 | ||
1126 | printf ("** Too many args (max. %d) **\n", CFG_MAXARGS); | |
1127 | ||
1128 | #ifdef DEBUG_PARSER | |
1129 | printf ("parse_line: nargs=%d\n", nargs); | |
1130 | #endif | |
1131 | return (nargs); | |
1132 | } | |
1133 | ||
1134 | /****************************************************************************/ | |
1135 | ||
1136 | static void process_macros (const char *input, char *output) | |
1137 | { | |
1138 | char c, prev; | |
1139 | const char *varname_start = NULL; | |
1140 | int inputcnt = strlen (input); | |
1141 | int outputcnt = CFG_CBSIZE; | |
1142 | int state = 0; /* 0 = waiting for '$' */ | |
5cf91d6b WD |
1143 | /* 1 = waiting for '(' or '{' */ |
1144 | /* 2 = waiting for ')' or '}' */ | |
8bde7f77 | 1145 | /* 3 = waiting for ''' */ |
c609719b WD |
1146 | #ifdef DEBUG_PARSER |
1147 | char *output_start = output; | |
1148 | ||
1149 | printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input); | |
1150 | #endif | |
1151 | ||
1152 | prev = '\0'; /* previous character */ | |
1153 | ||
1154 | while (inputcnt && outputcnt) { | |
1155 | c = *input++; | |
1156 | inputcnt--; | |
1157 | ||
a25f862b | 1158 | if (state!=3) { |
c609719b WD |
1159 | /* remove one level of escape characters */ |
1160 | if ((c == '\\') && (prev != '\\')) { | |
1161 | if (inputcnt-- == 0) | |
1162 | break; | |
1163 | prev = c; | |
8bde7f77 | 1164 | c = *input++; |
c609719b | 1165 | } |
a25f862b | 1166 | } |
c609719b WD |
1167 | |
1168 | switch (state) { | |
1169 | case 0: /* Waiting for (unescaped) $ */ | |
a25f862b WD |
1170 | if ((c == '\'') && (prev != '\\')) { |
1171 | state = 3; | |
a25f862b WD |
1172 | break; |
1173 | } | |
c609719b WD |
1174 | if ((c == '$') && (prev != '\\')) { |
1175 | state++; | |
1176 | } else { | |
1177 | *(output++) = c; | |
1178 | outputcnt--; | |
1179 | } | |
1180 | break; | |
1181 | case 1: /* Waiting for ( */ | |
5cf91d6b | 1182 | if (c == '(' || c == '{') { |
c609719b WD |
1183 | state++; |
1184 | varname_start = input; | |
1185 | } else { | |
1186 | state = 0; | |
1187 | *(output++) = '$'; | |
1188 | outputcnt--; | |
1189 | ||
1190 | if (outputcnt) { | |
1191 | *(output++) = c; | |
1192 | outputcnt--; | |
1193 | } | |
1194 | } | |
1195 | break; | |
1196 | case 2: /* Waiting for ) */ | |
5cf91d6b | 1197 | if (c == ')' || c == '}') { |
c609719b WD |
1198 | int i; |
1199 | char envname[CFG_CBSIZE], *envval; | |
1200 | int envcnt = input-varname_start-1; /* Varname # of chars */ | |
1201 | ||
1202 | /* Get the varname */ | |
1203 | for (i = 0; i < envcnt; i++) { | |
1204 | envname[i] = varname_start[i]; | |
1205 | } | |
1206 | envname[i] = 0; | |
1207 | ||
1208 | /* Get its value */ | |
1209 | envval = getenv (envname); | |
1210 | ||
1211 | /* Copy into the line if it exists */ | |
1212 | if (envval != NULL) | |
1213 | while ((*envval) && outputcnt) { | |
1214 | *(output++) = *(envval++); | |
1215 | outputcnt--; | |
1216 | } | |
1217 | /* Look for another '$' */ | |
1218 | state = 0; | |
1219 | } | |
1220 | break; | |
a25f862b WD |
1221 | case 3: /* Waiting for ' */ |
1222 | if ((c == '\'') && (prev != '\\')) { | |
1223 | state = 0; | |
a25f862b WD |
1224 | } else { |
1225 | *(output++) = c; | |
1226 | outputcnt--; | |
1227 | } | |
1228 | break; | |
c609719b | 1229 | } |
c609719b WD |
1230 | prev = c; |
1231 | } | |
1232 | ||
1233 | if (outputcnt) | |
1234 | *output = 0; | |
1235 | ||
1236 | #ifdef DEBUG_PARSER | |
1237 | printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", | |
1238 | strlen(output_start), output_start); | |
1239 | #endif | |
1240 | } | |
1241 | ||
1242 | /**************************************************************************** | |
1243 | * returns: | |
1244 | * 1 - command executed, repeatable | |
1245 | * 0 - command executed but not repeatable, interrupted commands are | |
1246 | * always considered not repeatable | |
1247 | * -1 - not executed (unrecognized, bootd recursion or too many args) | |
1248 | * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is | |
1249 | * considered unrecognized) | |
1250 | * | |
1251 | * WARNING: | |
1252 | * | |
1253 | * We must create a temporary copy of the command since the command we get | |
1254 | * may be the result from getenv(), which returns a pointer directly to | |
1255 | * the environment data, which may change magicly when the command we run | |
1256 | * creates or modifies environment variables (like "bootp" does). | |
1257 | */ | |
1258 | ||
1259 | int run_command (const char *cmd, int flag) | |
1260 | { | |
1261 | cmd_tbl_t *cmdtp; | |
1262 | char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */ | |
1263 | char *token; /* start of token in cmdbuf */ | |
1264 | char *sep; /* end of token (separator) in cmdbuf */ | |
1265 | char finaltoken[CFG_CBSIZE]; | |
1266 | char *str = cmdbuf; | |
1267 | char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ | |
f07771cc | 1268 | int argc, inquotes; |
c609719b | 1269 | int repeatable = 1; |
f07771cc | 1270 | int rc = 0; |
c609719b WD |
1271 | |
1272 | #ifdef DEBUG_PARSER | |
1273 | printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); | |
1274 | puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ | |
1275 | puts ("\"\n"); | |
1276 | #endif | |
1277 | ||
1278 | clear_ctrlc(); /* forget any previous Control C */ | |
1279 | ||
1280 | if (!cmd || !*cmd) { | |
1281 | return -1; /* empty command */ | |
1282 | } | |
1283 | ||
1284 | if (strlen(cmd) >= CFG_CBSIZE) { | |
1285 | puts ("## Command too long!\n"); | |
1286 | return -1; | |
1287 | } | |
1288 | ||
1289 | strcpy (cmdbuf, cmd); | |
1290 | ||
1291 | /* Process separators and check for invalid | |
1292 | * repeatable commands | |
1293 | */ | |
1294 | ||
1295 | #ifdef DEBUG_PARSER | |
1296 | printf ("[PROCESS_SEPARATORS] %s\n", cmd); | |
1297 | #endif | |
1298 | while (*str) { | |
1299 | ||
1300 | /* | |
1301 | * Find separator, or string end | |
1302 | * Allow simple escape of ';' by writing "\;" | |
1303 | */ | |
a25f862b WD |
1304 | for (inquotes = 0, sep = str; *sep; sep++) { |
1305 | if ((*sep=='\'') && | |
1306 | (*(sep-1) != '\\')) | |
1307 | inquotes=!inquotes; | |
1308 | ||
1309 | if (!inquotes && | |
1310 | (*sep == ';') && /* separator */ | |
c609719b WD |
1311 | ( sep != str) && /* past string start */ |
1312 | (*(sep-1) != '\\')) /* and NOT escaped */ | |
1313 | break; | |
1314 | } | |
1315 | ||
1316 | /* | |
1317 | * Limit the token to data between separators | |
1318 | */ | |
1319 | token = str; | |
1320 | if (*sep) { | |
1321 | str = sep + 1; /* start of command for next pass */ | |
1322 | *sep = '\0'; | |
1323 | } | |
1324 | else | |
1325 | str = sep; /* no more commands for next pass */ | |
1326 | #ifdef DEBUG_PARSER | |
1327 | printf ("token: \"%s\"\n", token); | |
1328 | #endif | |
1329 | ||
1330 | /* find macros in this token and replace them */ | |
1331 | process_macros (token, finaltoken); | |
1332 | ||
1333 | /* Extract arguments */ | |
1264b405 WD |
1334 | if ((argc = parse_line (finaltoken, argv)) == 0) { |
1335 | rc = -1; /* no command at all */ | |
1336 | continue; | |
1337 | } | |
c609719b WD |
1338 | |
1339 | /* Look up command in command table */ | |
1340 | if ((cmdtp = find_cmd(argv[0])) == NULL) { | |
1341 | printf ("Unknown command '%s' - try 'help'\n", argv[0]); | |
f07771cc WD |
1342 | rc = -1; /* give up after bad command */ |
1343 | continue; | |
c609719b WD |
1344 | } |
1345 | ||
1346 | /* found - check max args */ | |
1347 | if (argc > cmdtp->maxargs) { | |
1348 | printf ("Usage:\n%s\n", cmdtp->usage); | |
f07771cc WD |
1349 | rc = -1; |
1350 | continue; | |
c609719b WD |
1351 | } |
1352 | ||
1353 | #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) | |
1354 | /* avoid "bootd" recursion */ | |
1355 | if (cmdtp->cmd == do_bootd) { | |
1356 | #ifdef DEBUG_PARSER | |
1357 | printf ("[%s]\n", finaltoken); | |
1358 | #endif | |
1359 | if (flag & CMD_FLAG_BOOTD) { | |
4b9206ed | 1360 | puts ("'bootd' recursion detected\n"); |
f07771cc WD |
1361 | rc = -1; |
1362 | continue; | |
1264b405 | 1363 | } else { |
c609719b | 1364 | flag |= CMD_FLAG_BOOTD; |
1264b405 | 1365 | } |
c609719b WD |
1366 | } |
1367 | #endif /* CFG_CMD_BOOTD */ | |
1368 | ||
1369 | /* OK - call function to do the command */ | |
1370 | if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) { | |
f07771cc | 1371 | rc = -1; |
c609719b WD |
1372 | } |
1373 | ||
1374 | repeatable &= cmdtp->repeatable; | |
1375 | ||
1376 | /* Did the user stop this? */ | |
1377 | if (had_ctrlc ()) | |
1378 | return 0; /* if stopped then not repeatable */ | |
1379 | } | |
1380 | ||
f07771cc | 1381 | return rc ? rc : repeatable; |
c609719b WD |
1382 | } |
1383 | ||
1384 | /****************************************************************************/ | |
1385 | ||
1386 | #if (CONFIG_COMMANDS & CFG_CMD_RUN) | |
1387 | int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
1388 | { | |
1389 | int i; | |
c609719b WD |
1390 | |
1391 | if (argc < 2) { | |
1392 | printf ("Usage:\n%s\n", cmdtp->usage); | |
1393 | return 1; | |
1394 | } | |
1395 | ||
1396 | for (i=1; i<argc; ++i) { | |
3e38691e WD |
1397 | char *arg; |
1398 | ||
1399 | if ((arg = getenv (argv[i])) == NULL) { | |
1400 | printf ("## Error: \"%s\" not defined\n", argv[i]); | |
1401 | return 1; | |
1402 | } | |
c609719b | 1403 | #ifndef CFG_HUSH_PARSER |
3e38691e WD |
1404 | if (run_command (arg, flag) == -1) |
1405 | return 1; | |
c609719b | 1406 | #else |
3e38691e | 1407 | if (parse_string_outer(arg, |
7aa78614 | 1408 | FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0) |
3e38691e | 1409 | return 1; |
c609719b WD |
1410 | #endif |
1411 | } | |
3e38691e | 1412 | return 0; |
c609719b | 1413 | } |
3e38691e | 1414 | #endif /* CFG_CMD_RUN */ |