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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); | |
19973b6a | 98 | struct { |
c609719b WD |
99 | char* str; |
100 | u_int len; | |
101 | int retry; | |
102 | } | |
19973b6a | 103 | delaykey [] = { |
c609719b WD |
104 | { str: getenv ("bootdelaykey"), retry: 1 }, |
105 | { str: getenv ("bootdelaykey2"), retry: 1 }, | |
106 | { str: getenv ("bootstopkey"), retry: 0 }, | |
107 | { str: getenv ("bootstopkey2"), retry: 0 }, | |
108 | }; | |
109 | ||
110 | char presskey [MAX_DELAY_STOP_STR]; | |
111 | u_int presskey_len = 0; | |
112 | u_int presskey_max = 0; | |
113 | u_int i; | |
114 | ||
8cb8143e | 115 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
116 | if (gd->flags & GD_FLG_SILENT) { |
117 | /* Restore serial console */ | |
118 | console_assign (stdout, "serial"); | |
119 | console_assign (stderr, "serial"); | |
8cb8143e | 120 | } |
121 | #endif | |
122 | ||
c609719b WD |
123 | # ifdef CONFIG_AUTOBOOT_PROMPT |
124 | printf (CONFIG_AUTOBOOT_PROMPT, bootdelay); | |
125 | # endif | |
126 | ||
127 | # ifdef CONFIG_AUTOBOOT_DELAY_STR | |
128 | if (delaykey[0].str == NULL) | |
129 | delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; | |
130 | # endif | |
131 | # ifdef CONFIG_AUTOBOOT_DELAY_STR2 | |
132 | if (delaykey[1].str == NULL) | |
133 | delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; | |
134 | # endif | |
135 | # ifdef CONFIG_AUTOBOOT_STOP_STR | |
136 | if (delaykey[2].str == NULL) | |
137 | delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; | |
138 | # endif | |
139 | # ifdef CONFIG_AUTOBOOT_STOP_STR2 | |
140 | if (delaykey[3].str == NULL) | |
141 | delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; | |
142 | # endif | |
143 | ||
144 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { | |
145 | delaykey[i].len = delaykey[i].str == NULL ? | |
146 | 0 : strlen (delaykey[i].str); | |
147 | delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? | |
148 | MAX_DELAY_STOP_STR : delaykey[i].len; | |
149 | ||
150 | presskey_max = presskey_max > delaykey[i].len ? | |
151 | presskey_max : delaykey[i].len; | |
152 | ||
153 | # if DEBUG_BOOTKEYS | |
154 | printf("%s key:<%s>\n", | |
155 | delaykey[i].retry ? "delay" : "stop", | |
156 | delaykey[i].str ? delaykey[i].str : "NULL"); | |
157 | # endif | |
158 | } | |
159 | ||
160 | /* In order to keep up with incoming data, check timeout only | |
161 | * when catch up. | |
162 | */ | |
163 | while (!abort && get_ticks() <= etime) { | |
164 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { | |
165 | if (delaykey[i].len > 0 && | |
166 | presskey_len >= delaykey[i].len && | |
167 | memcmp (presskey + presskey_len - delaykey[i].len, | |
8bde7f77 | 168 | delaykey[i].str, |
c609719b WD |
169 | delaykey[i].len) == 0) { |
170 | # if DEBUG_BOOTKEYS | |
171 | printf("got %skey\n", | |
172 | delaykey[i].retry ? "delay" : "stop"); | |
173 | # endif | |
174 | ||
175 | # ifdef CONFIG_BOOT_RETRY_TIME | |
176 | /* don't retry auto boot */ | |
177 | if (! delaykey[i].retry) | |
178 | retry_time = -1; | |
179 | # endif | |
180 | abort = 1; | |
181 | } | |
182 | } | |
183 | ||
184 | if (tstc()) { | |
185 | if (presskey_len < presskey_max) { | |
186 | presskey [presskey_len ++] = getc(); | |
187 | } | |
188 | else { | |
189 | for (i = 0; i < presskey_max - 1; i ++) | |
190 | presskey [i] = presskey [i + 1]; | |
191 | ||
192 | presskey [i] = getc(); | |
193 | } | |
194 | } | |
195 | } | |
196 | # if DEBUG_BOOTKEYS | |
197 | if (!abort) | |
4b9206ed | 198 | puts ("key timeout\n"); |
c609719b WD |
199 | # endif |
200 | ||
8cb8143e | 201 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
202 | if (abort) { |
203 | /* permanently enable normal console output */ | |
204 | gd->flags &= ~(GD_FLG_SILENT); | |
205 | } else if (gd->flags & GD_FLG_SILENT) { | |
206 | /* Restore silent console */ | |
207 | console_assign (stdout, "nulldev"); | |
208 | console_assign (stderr, "nulldev"); | |
8cb8143e | 209 | } |
210 | #endif | |
211 | ||
c609719b WD |
212 | return abort; |
213 | } | |
214 | ||
215 | # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ | |
216 | ||
c7de829c WD |
217 | #ifdef CONFIG_MENUKEY |
218 | static int menukey = 0; | |
219 | #endif | |
220 | ||
c609719b WD |
221 | static __inline__ int abortboot(int bootdelay) |
222 | { | |
223 | int abort = 0; | |
224 | ||
f72da340 | 225 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
226 | if (gd->flags & GD_FLG_SILENT) { |
227 | /* Restore serial console */ | |
228 | console_assign (stdout, "serial"); | |
229 | console_assign (stderr, "serial"); | |
f72da340 WD |
230 | } |
231 | #endif | |
232 | ||
c7de829c WD |
233 | #ifdef CONFIG_MENUPROMPT |
234 | printf(CONFIG_MENUPROMPT, bootdelay); | |
235 | #else | |
c609719b | 236 | printf("Hit any key to stop autoboot: %2d ", bootdelay); |
c7de829c | 237 | #endif |
c609719b WD |
238 | |
239 | #if defined CONFIG_ZERO_BOOTDELAY_CHECK | |
8bde7f77 WD |
240 | /* |
241 | * Check if key already pressed | |
242 | * Don't check if bootdelay < 0 | |
243 | */ | |
c609719b WD |
244 | if (bootdelay >= 0) { |
245 | if (tstc()) { /* we got a key press */ | |
246 | (void) getc(); /* consume input */ | |
4b9206ed | 247 | puts ("\b\b\b 0"); |
f72da340 | 248 | abort = 1; /* don't auto boot */ |
c609719b | 249 | } |
8bde7f77 | 250 | } |
c609719b WD |
251 | #endif |
252 | ||
f72da340 | 253 | while ((bootdelay > 0) && (!abort)) { |
c609719b WD |
254 | int i; |
255 | ||
256 | --bootdelay; | |
257 | /* delay 100 * 10ms */ | |
258 | for (i=0; !abort && i<100; ++i) { | |
259 | if (tstc()) { /* we got a key press */ | |
260 | abort = 1; /* don't auto boot */ | |
261 | bootdelay = 0; /* no more delay */ | |
c7de829c WD |
262 | # ifdef CONFIG_MENUKEY |
263 | menukey = getc(); | |
264 | # else | |
c609719b | 265 | (void) getc(); /* consume input */ |
c7de829c | 266 | # endif |
c609719b WD |
267 | break; |
268 | } | |
269 | udelay (10000); | |
270 | } | |
271 | ||
272 | printf ("\b\b\b%2d ", bootdelay); | |
273 | } | |
274 | ||
275 | putc ('\n'); | |
276 | ||
f72da340 | 277 | #ifdef CONFIG_SILENT_CONSOLE |
d87080b7 WD |
278 | if (abort) { |
279 | /* permanently enable normal console output */ | |
280 | gd->flags &= ~(GD_FLG_SILENT); | |
281 | } else if (gd->flags & GD_FLG_SILENT) { | |
282 | /* Restore silent console */ | |
283 | console_assign (stdout, "nulldev"); | |
284 | console_assign (stderr, "nulldev"); | |
f72da340 WD |
285 | } |
286 | #endif | |
287 | ||
c609719b WD |
288 | return abort; |
289 | } | |
290 | # endif /* CONFIG_AUTOBOOT_KEYED */ | |
291 | #endif /* CONFIG_BOOTDELAY >= 0 */ | |
292 | ||
293 | /****************************************************************************/ | |
294 | ||
295 | void main_loop (void) | |
296 | { | |
297 | #ifndef CFG_HUSH_PARSER | |
298 | static char lastcommand[CFG_CBSIZE] = { 0, }; | |
299 | int len; | |
300 | int rc = 1; | |
301 | int flag; | |
302 | #endif | |
303 | ||
304 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
305 | char *s; | |
306 | int bootdelay; | |
307 | #endif | |
308 | #ifdef CONFIG_PREBOOT | |
309 | char *p; | |
310 | #endif | |
bdccc4fe WD |
311 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
312 | unsigned long bootcount = 0; | |
313 | unsigned long bootlimit = 0; | |
314 | char *bcs; | |
315 | char bcs_set[16]; | |
316 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
c609719b WD |
317 | |
318 | #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO) | |
319 | ulong bmp = 0; /* default bitmap */ | |
320 | extern int trab_vfd (ulong bitmap); | |
321 | ||
322 | #ifdef CONFIG_MODEM_SUPPORT | |
323 | if (do_mdm_init) | |
324 | bmp = 1; /* alternate bitmap */ | |
325 | #endif | |
326 | trab_vfd (bmp); | |
327 | #endif /* CONFIG_VFD && VFD_TEST_LOGO */ | |
328 | ||
bdccc4fe WD |
329 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
330 | bootcount = bootcount_load(); | |
331 | bootcount++; | |
332 | bootcount_store (bootcount); | |
333 | sprintf (bcs_set, "%lu", bootcount); | |
334 | setenv ("bootcount", bcs_set); | |
335 | bcs = getenv ("bootlimit"); | |
336 | bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; | |
337 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
338 | ||
c609719b WD |
339 | #ifdef CONFIG_MODEM_SUPPORT |
340 | debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); | |
341 | if (do_mdm_init) { | |
77ddac94 | 342 | char *str = strdup(getenv("mdm_cmd")); |
c609719b WD |
343 | setenv ("preboot", str); /* set or delete definition */ |
344 | if (str != NULL) | |
345 | free (str); | |
346 | mdm_init(); /* wait for modem connection */ | |
347 | } | |
348 | #endif /* CONFIG_MODEM_SUPPORT */ | |
349 | ||
0587597c SR |
350 | #ifdef CONFIG_VERSION_VARIABLE |
351 | { | |
352 | extern char version_string[]; | |
0587597c | 353 | |
155cb010 | 354 | setenv ("ver", version_string); /* set version variable */ |
0587597c SR |
355 | } |
356 | #endif /* CONFIG_VERSION_VARIABLE */ | |
357 | ||
c609719b WD |
358 | #ifdef CFG_HUSH_PARSER |
359 | u_boot_hush_start (); | |
360 | #endif | |
361 | ||
04a85b3b WD |
362 | #ifdef CONFIG_AUTO_COMPLETE |
363 | install_auto_complete(); | |
364 | #endif | |
365 | ||
c609719b WD |
366 | #ifdef CONFIG_PREBOOT |
367 | if ((p = getenv ("preboot")) != NULL) { | |
368 | # ifdef CONFIG_AUTOBOOT_KEYED | |
369 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
370 | # endif | |
371 | ||
372 | # ifndef CFG_HUSH_PARSER | |
373 | run_command (p, 0); | |
374 | # else | |
375 | parse_string_outer(p, FLAG_PARSE_SEMICOLON | | |
376 | FLAG_EXIT_FROM_LOOP); | |
377 | # endif | |
378 | ||
379 | # ifdef CONFIG_AUTOBOOT_KEYED | |
380 | disable_ctrlc(prev); /* restore Control C checking */ | |
381 | # endif | |
382 | } | |
383 | #endif /* CONFIG_PREBOOT */ | |
384 | ||
385 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
386 | s = getenv ("bootdelay"); | |
387 | bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; | |
388 | ||
a6c7ad2f | 389 | debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); |
c609719b WD |
390 | |
391 | # ifdef CONFIG_BOOT_RETRY_TIME | |
6dd652fa | 392 | init_cmd_timeout (); |
c609719b WD |
393 | # endif /* CONFIG_BOOT_RETRY_TIME */ |
394 | ||
bdccc4fe WD |
395 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
396 | if (bootlimit && (bootcount > bootlimit)) { | |
397 | printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", | |
398 | (unsigned)bootlimit); | |
399 | s = getenv ("altbootcmd"); | |
400 | } | |
401 | else | |
402 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
403 | s = getenv ("bootcmd"); | |
a6c7ad2f WD |
404 | |
405 | debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); | |
406 | ||
c609719b WD |
407 | if (bootdelay >= 0 && s && !abortboot (bootdelay)) { |
408 | # ifdef CONFIG_AUTOBOOT_KEYED | |
409 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
410 | # endif | |
411 | ||
412 | # ifndef CFG_HUSH_PARSER | |
413 | run_command (s, 0); | |
414 | # else | |
415 | parse_string_outer(s, FLAG_PARSE_SEMICOLON | | |
416 | FLAG_EXIT_FROM_LOOP); | |
417 | # endif | |
418 | ||
419 | # ifdef CONFIG_AUTOBOOT_KEYED | |
420 | disable_ctrlc(prev); /* restore Control C checking */ | |
421 | # endif | |
422 | } | |
c7de829c WD |
423 | |
424 | # ifdef CONFIG_MENUKEY | |
a6c7ad2f | 425 | if (menukey == CONFIG_MENUKEY) { |
c7de829c | 426 | s = getenv("menucmd"); |
a6c7ad2f | 427 | if (s) { |
c7de829c | 428 | # ifndef CFG_HUSH_PARSER |
6225c5db | 429 | run_command (s, 0); |
c7de829c WD |
430 | # else |
431 | parse_string_outer(s, FLAG_PARSE_SEMICOLON | | |
432 | FLAG_EXIT_FROM_LOOP); | |
433 | # endif | |
434 | } | |
435 | } | |
436 | #endif /* CONFIG_MENUKEY */ | |
c609719b WD |
437 | #endif /* CONFIG_BOOTDELAY */ |
438 | ||
c7de829c WD |
439 | #ifdef CONFIG_AMIGAONEG3SE |
440 | { | |
441 | extern void video_banner(void); | |
442 | video_banner(); | |
443 | } | |
444 | #endif | |
445 | ||
c609719b WD |
446 | /* |
447 | * Main Loop for Monitor Command Processing | |
448 | */ | |
449 | #ifdef CFG_HUSH_PARSER | |
450 | parse_file_outer(); | |
451 | /* This point is never reached */ | |
452 | for (;;); | |
453 | #else | |
454 | for (;;) { | |
455 | #ifdef CONFIG_BOOT_RETRY_TIME | |
456 | if (rc >= 0) { | |
457 | /* Saw enough of a valid command to | |
458 | * restart the timeout. | |
459 | */ | |
460 | reset_cmd_timeout(); | |
461 | } | |
462 | #endif | |
463 | len = readline (CFG_PROMPT); | |
464 | ||
465 | flag = 0; /* assume no special flags for now */ | |
466 | if (len > 0) | |
467 | strcpy (lastcommand, console_buffer); | |
468 | else if (len == 0) | |
469 | flag |= CMD_FLAG_REPEAT; | |
470 | #ifdef CONFIG_BOOT_RETRY_TIME | |
471 | else if (len == -2) { | |
472 | /* -2 means timed out, retry autoboot | |
473 | */ | |
4b9206ed | 474 | puts ("\nTimed out waiting for command\n"); |
c609719b WD |
475 | # ifdef CONFIG_RESET_TO_RETRY |
476 | /* Reinit board to run initialization code again */ | |
477 | do_reset (NULL, 0, 0, NULL); | |
478 | # else | |
479 | return; /* retry autoboot */ | |
480 | # endif | |
481 | } | |
482 | #endif | |
483 | ||
484 | if (len == -1) | |
4b9206ed | 485 | puts ("<INTERRUPT>\n"); |
c609719b WD |
486 | else |
487 | rc = run_command (lastcommand, flag); | |
488 | ||
489 | if (rc <= 0) { | |
490 | /* invalid command or not repeatable, forget it */ | |
491 | lastcommand[0] = 0; | |
492 | } | |
493 | } | |
494 | #endif /*CFG_HUSH_PARSER*/ | |
495 | } | |
496 | ||
6dd652fa WD |
497 | #ifdef CONFIG_BOOT_RETRY_TIME |
498 | /*************************************************************************** | |
19973b6a | 499 | * initialize command line timeout |
6dd652fa WD |
500 | */ |
501 | void init_cmd_timeout(void) | |
502 | { | |
503 | char *s = getenv ("bootretry"); | |
504 | ||
505 | if (s != NULL) | |
b028f715 | 506 | retry_time = (int)simple_strtol(s, NULL, 10); |
6dd652fa WD |
507 | else |
508 | retry_time = CONFIG_BOOT_RETRY_TIME; | |
509 | ||
510 | if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) | |
511 | retry_time = CONFIG_BOOT_RETRY_MIN; | |
512 | } | |
513 | ||
c609719b WD |
514 | /*************************************************************************** |
515 | * reset command line timeout to retry_time seconds | |
516 | */ | |
c609719b WD |
517 | void reset_cmd_timeout(void) |
518 | { | |
519 | endtime = endtick(retry_time); | |
520 | } | |
521 | #endif | |
522 | ||
501090aa WD |
523 | #ifdef CONFIG_CMDLINE_EDITING |
524 | ||
525 | /* | |
526 | * cmdline-editing related codes from vivi. | |
527 | * Author: Janghoon Lyu <nandy@mizi.com> | |
528 | */ | |
529 | ||
501090aa WD |
530 | #define putnstr(str,n) do { \ |
531 | printf ("%.*s", n, str); \ | |
532 | } while (0) | |
501090aa WD |
533 | |
534 | #define CTL_CH(c) ((c) - 'a' + 1) | |
535 | ||
536 | #define MAX_CMDBUF_SIZE 256 | |
537 | ||
538 | #define CTL_BACKSPACE ('\b') | |
539 | #define DEL ((char)255) | |
540 | #define DEL7 ((char)127) | |
541 | #define CREAD_HIST_CHAR ('!') | |
542 | ||
543 | #define getcmd_putch(ch) putc(ch) | |
544 | #define getcmd_getch() getc() | |
545 | #define getcmd_cbeep() getcmd_putch('\a') | |
546 | ||
547 | #define HIST_MAX 20 | |
548 | #define HIST_SIZE MAX_CMDBUF_SIZE | |
549 | ||
550 | static int hist_max = 0; | |
551 | static int hist_add_idx = 0; | |
552 | static int hist_cur = -1; | |
553 | unsigned hist_num = 0; | |
554 | ||
555 | char* hist_list[HIST_MAX]; | |
556 | char hist_lines[HIST_MAX][HIST_SIZE]; | |
557 | ||
558 | #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) | |
559 | ||
560 | static void hist_init(void) | |
561 | { | |
562 | int i; | |
563 | ||
564 | hist_max = 0; | |
565 | hist_add_idx = 0; | |
566 | hist_cur = -1; | |
567 | hist_num = 0; | |
568 | ||
569 | for (i = 0; i < HIST_MAX; i++) { | |
570 | hist_list[i] = hist_lines[i]; | |
571 | hist_list[i][0] = '\0'; | |
572 | } | |
573 | } | |
574 | ||
575 | static void cread_add_to_hist(char *line) | |
576 | { | |
577 | strcpy(hist_list[hist_add_idx], line); | |
578 | ||
579 | if (++hist_add_idx >= HIST_MAX) | |
580 | hist_add_idx = 0; | |
581 | ||
582 | if (hist_add_idx > hist_max) | |
583 | hist_max = hist_add_idx; | |
584 | ||
585 | hist_num++; | |
586 | } | |
587 | ||
588 | static char* hist_prev(void) | |
589 | { | |
590 | char *ret; | |
591 | int old_cur; | |
592 | ||
593 | if (hist_cur < 0) | |
594 | return NULL; | |
595 | ||
596 | old_cur = hist_cur; | |
597 | if (--hist_cur < 0) | |
598 | hist_cur = hist_max; | |
599 | ||
600 | if (hist_cur == hist_add_idx) { | |
601 | hist_cur = old_cur; | |
602 | ret = NULL; | |
603 | } else | |
604 | ret = hist_list[hist_cur]; | |
605 | ||
606 | return (ret); | |
607 | } | |
608 | ||
609 | static char* hist_next(void) | |
610 | { | |
611 | char *ret; | |
612 | ||
613 | if (hist_cur < 0) | |
614 | return NULL; | |
615 | ||
616 | if (hist_cur == hist_add_idx) | |
617 | return NULL; | |
618 | ||
619 | if (++hist_cur > hist_max) | |
620 | hist_cur = 0; | |
621 | ||
622 | if (hist_cur == hist_add_idx) { | |
623 | ret = ""; | |
624 | } else | |
625 | ret = hist_list[hist_cur]; | |
626 | ||
627 | return (ret); | |
628 | } | |
629 | ||
3ca9122f | 630 | #ifndef CONFIG_CMDLINE_EDITING |
501090aa WD |
631 | static void cread_print_hist_list(void) |
632 | { | |
633 | int i; | |
634 | unsigned long n; | |
635 | ||
636 | n = hist_num - hist_max; | |
637 | ||
638 | i = hist_add_idx + 1; | |
639 | while (1) { | |
640 | if (i > hist_max) | |
641 | i = 0; | |
642 | if (i == hist_add_idx) | |
643 | break; | |
644 | printf("%s\n", hist_list[i]); | |
645 | n++; | |
646 | i++; | |
647 | } | |
648 | } | |
3ca9122f | 649 | #endif /* CONFIG_CMDLINE_EDITING */ |
501090aa WD |
650 | |
651 | #define BEGINNING_OF_LINE() { \ | |
652 | while (num) { \ | |
653 | getcmd_putch(CTL_BACKSPACE); \ | |
654 | num--; \ | |
655 | } \ | |
656 | } | |
657 | ||
658 | #define ERASE_TO_EOL() { \ | |
659 | if (num < eol_num) { \ | |
660 | int tmp; \ | |
661 | for (tmp = num; tmp < eol_num; tmp++) \ | |
662 | getcmd_putch(' '); \ | |
663 | while (tmp-- > num) \ | |
664 | getcmd_putch(CTL_BACKSPACE); \ | |
665 | eol_num = num; \ | |
666 | } \ | |
667 | } | |
668 | ||
669 | #define REFRESH_TO_EOL() { \ | |
670 | if (num < eol_num) { \ | |
671 | wlen = eol_num - num; \ | |
672 | putnstr(buf + num, wlen); \ | |
673 | num = eol_num; \ | |
674 | } \ | |
675 | } | |
676 | ||
677 | static void cread_add_char(char ichar, int insert, unsigned long *num, | |
678 | unsigned long *eol_num, char *buf, unsigned long len) | |
679 | { | |
680 | unsigned long wlen; | |
681 | ||
682 | /* room ??? */ | |
683 | if (insert || *num == *eol_num) { | |
684 | if (*eol_num > len - 1) { | |
685 | getcmd_cbeep(); | |
686 | return; | |
687 | } | |
688 | (*eol_num)++; | |
689 | } | |
690 | ||
691 | if (insert) { | |
692 | wlen = *eol_num - *num; | |
693 | if (wlen > 1) { | |
694 | memmove(&buf[*num+1], &buf[*num], wlen-1); | |
695 | } | |
696 | ||
697 | buf[*num] = ichar; | |
698 | putnstr(buf + *num, wlen); | |
699 | (*num)++; | |
700 | while (--wlen) { | |
701 | getcmd_putch(CTL_BACKSPACE); | |
702 | } | |
703 | } else { | |
704 | /* echo the character */ | |
705 | wlen = 1; | |
706 | buf[*num] = ichar; | |
707 | putnstr(buf + *num, wlen); | |
708 | (*num)++; | |
709 | } | |
710 | } | |
711 | ||
712 | static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, | |
713 | unsigned long *eol_num, char *buf, unsigned long len) | |
714 | { | |
715 | while (strsize--) { | |
716 | cread_add_char(*str, insert, num, eol_num, buf, len); | |
717 | str++; | |
718 | } | |
719 | } | |
720 | ||
721 | static int cread_line(char *buf, unsigned int *len) | |
722 | { | |
723 | unsigned long num = 0; | |
724 | unsigned long eol_num = 0; | |
725 | unsigned long rlen; | |
726 | unsigned long wlen; | |
727 | char ichar; | |
728 | int insert = 1; | |
729 | int esc_len = 0; | |
730 | int rc = 0; | |
731 | char esc_save[8]; | |
732 | ||
733 | while (1) { | |
734 | rlen = 1; | |
735 | ichar = getcmd_getch(); | |
736 | ||
737 | if ((ichar == '\n') || (ichar == '\r')) { | |
dd9f06f0 | 738 | putc('\n'); |
501090aa WD |
739 | break; |
740 | } | |
741 | ||
742 | /* | |
743 | * handle standard linux xterm esc sequences for arrow key, etc. | |
744 | */ | |
745 | if (esc_len != 0) { | |
746 | if (esc_len == 1) { | |
747 | if (ichar == '[') { | |
748 | esc_save[esc_len] = ichar; | |
749 | esc_len = 2; | |
750 | } else { | |
751 | cread_add_str(esc_save, esc_len, insert, | |
752 | &num, &eol_num, buf, *len); | |
753 | esc_len = 0; | |
754 | } | |
755 | continue; | |
756 | } | |
757 | ||
758 | switch (ichar) { | |
759 | ||
760 | case 'D': /* <- key */ | |
761 | ichar = CTL_CH('b'); | |
762 | esc_len = 0; | |
763 | break; | |
764 | case 'C': /* -> key */ | |
765 | ichar = CTL_CH('f'); | |
766 | esc_len = 0; | |
767 | break; /* pass off to ^F handler */ | |
768 | case 'H': /* Home key */ | |
769 | ichar = CTL_CH('a'); | |
770 | esc_len = 0; | |
771 | break; /* pass off to ^A handler */ | |
772 | case 'A': /* up arrow */ | |
773 | ichar = CTL_CH('p'); | |
774 | esc_len = 0; | |
775 | break; /* pass off to ^P handler */ | |
776 | case 'B': /* down arrow */ | |
777 | ichar = CTL_CH('n'); | |
778 | esc_len = 0; | |
779 | break; /* pass off to ^N handler */ | |
780 | default: | |
781 | esc_save[esc_len++] = ichar; | |
782 | cread_add_str(esc_save, esc_len, insert, | |
783 | &num, &eol_num, buf, *len); | |
784 | esc_len = 0; | |
785 | continue; | |
786 | } | |
787 | } | |
788 | ||
789 | switch (ichar) { | |
790 | case 0x1b: | |
791 | if (esc_len == 0) { | |
792 | esc_save[esc_len] = ichar; | |
793 | esc_len = 1; | |
794 | } else { | |
dd9f06f0 | 795 | puts("impossible condition #876\n"); |
501090aa WD |
796 | esc_len = 0; |
797 | } | |
798 | break; | |
799 | ||
800 | case CTL_CH('a'): | |
801 | BEGINNING_OF_LINE(); | |
802 | break; | |
803 | case CTL_CH('c'): /* ^C - break */ | |
804 | *buf = '\0'; /* discard input */ | |
805 | return (-1); | |
806 | case CTL_CH('f'): | |
807 | if (num < eol_num) { | |
808 | getcmd_putch(buf[num]); | |
809 | num++; | |
810 | } | |
811 | break; | |
812 | case CTL_CH('b'): | |
813 | if (num) { | |
814 | getcmd_putch(CTL_BACKSPACE); | |
815 | num--; | |
816 | } | |
817 | break; | |
818 | case CTL_CH('d'): | |
819 | if (num < eol_num) { | |
820 | wlen = eol_num - num - 1; | |
821 | if (wlen) { | |
822 | memmove(&buf[num], &buf[num+1], wlen); | |
823 | putnstr(buf + num, wlen); | |
824 | } | |
825 | ||
826 | getcmd_putch(' '); | |
827 | do { | |
828 | getcmd_putch(CTL_BACKSPACE); | |
829 | } while (wlen--); | |
830 | eol_num--; | |
831 | } | |
832 | break; | |
833 | case CTL_CH('k'): | |
834 | ERASE_TO_EOL(); | |
835 | break; | |
836 | case CTL_CH('e'): | |
837 | REFRESH_TO_EOL(); | |
838 | break; | |
839 | case CTL_CH('o'): | |
840 | insert = !insert; | |
841 | break; | |
842 | case CTL_CH('x'): | |
843 | BEGINNING_OF_LINE(); | |
844 | ERASE_TO_EOL(); | |
845 | break; | |
846 | case DEL: | |
847 | case DEL7: | |
848 | case 8: | |
849 | if (num) { | |
850 | wlen = eol_num - num; | |
851 | num--; | |
852 | memmove(&buf[num], &buf[num+1], wlen); | |
853 | getcmd_putch(CTL_BACKSPACE); | |
854 | putnstr(buf + num, wlen); | |
855 | getcmd_putch(' '); | |
856 | do { | |
857 | getcmd_putch(CTL_BACKSPACE); | |
858 | } while (wlen--); | |
859 | eol_num--; | |
860 | } | |
861 | break; | |
862 | case CTL_CH('p'): | |
863 | case CTL_CH('n'): | |
864 | { | |
865 | char * hline; | |
866 | ||
867 | esc_len = 0; | |
868 | ||
869 | if (ichar == CTL_CH('p')) | |
870 | hline = hist_prev(); | |
871 | else | |
872 | hline = hist_next(); | |
873 | ||
874 | if (!hline) { | |
875 | getcmd_cbeep(); | |
876 | continue; | |
877 | } | |
878 | ||
879 | /* nuke the current line */ | |
880 | /* first, go home */ | |
881 | BEGINNING_OF_LINE(); | |
882 | ||
883 | /* erase to end of line */ | |
884 | ERASE_TO_EOL(); | |
885 | ||
886 | /* copy new line into place and display */ | |
887 | strcpy(buf, hline); | |
888 | eol_num = strlen(buf); | |
889 | REFRESH_TO_EOL(); | |
890 | continue; | |
891 | } | |
892 | default: | |
893 | cread_add_char(ichar, insert, &num, &eol_num, buf, *len); | |
894 | break; | |
895 | } | |
896 | } | |
897 | *len = eol_num; | |
898 | buf[eol_num] = '\0'; /* lose the newline */ | |
899 | ||
900 | if (buf[0] && buf[0] != CREAD_HIST_CHAR) | |
901 | cread_add_to_hist(buf); | |
902 | hist_cur = hist_add_idx; | |
903 | ||
904 | return (rc); | |
905 | } | |
906 | ||
907 | #endif /* CONFIG_CMDLINE_EDITING */ | |
908 | ||
c609719b WD |
909 | /****************************************************************************/ |
910 | ||
911 | /* | |
912 | * Prompt for input and read a line. | |
913 | * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, | |
914 | * time out when time goes past endtime (timebase time in ticks). | |
915 | * Return: number of read characters | |
916 | * -1 if break | |
917 | * -2 if timed out | |
918 | */ | |
919 | int readline (const char *const prompt) | |
920 | { | |
501090aa WD |
921 | #ifdef CONFIG_CMDLINE_EDITING |
922 | char *p = console_buffer; | |
923 | unsigned int len=MAX_CMDBUF_SIZE; | |
d8f961bb | 924 | int rc; |
501090aa WD |
925 | static int initted = 0; |
926 | ||
927 | if (!initted) { | |
928 | hist_init(); | |
929 | initted = 1; | |
930 | } | |
931 | ||
dd9f06f0 | 932 | puts (prompt); |
501090aa | 933 | |
d8f961bb SR |
934 | rc = cread_line(p, &len); |
935 | return rc < 0 ? rc : len; | |
501090aa | 936 | #else |
c609719b WD |
937 | char *p = console_buffer; |
938 | int n = 0; /* buffer index */ | |
939 | int plen = 0; /* prompt length */ | |
940 | int col; /* output column cnt */ | |
941 | char c; | |
942 | ||
943 | /* print prompt */ | |
944 | if (prompt) { | |
945 | plen = strlen (prompt); | |
946 | puts (prompt); | |
947 | } | |
948 | col = plen; | |
949 | ||
950 | for (;;) { | |
951 | #ifdef CONFIG_BOOT_RETRY_TIME | |
952 | while (!tstc()) { /* while no incoming data */ | |
953 | if (retry_time >= 0 && get_ticks() > endtime) | |
954 | return (-2); /* timed out */ | |
955 | } | |
956 | #endif | |
957 | WATCHDOG_RESET(); /* Trigger watchdog, if needed */ | |
958 | ||
959 | #ifdef CONFIG_SHOW_ACTIVITY | |
960 | while (!tstc()) { | |
961 | extern void show_activity(int arg); | |
962 | show_activity(0); | |
963 | } | |
964 | #endif | |
965 | c = getc(); | |
966 | ||
967 | /* | |
968 | * Special character handling | |
969 | */ | |
970 | switch (c) { | |
971 | case '\r': /* Enter */ | |
972 | case '\n': | |
973 | *p = '\0'; | |
974 | puts ("\r\n"); | |
975 | return (p - console_buffer); | |
976 | ||
27aa8186 WD |
977 | case '\0': /* nul */ |
978 | continue; | |
979 | ||
c609719b WD |
980 | case 0x03: /* ^C - break */ |
981 | console_buffer[0] = '\0'; /* discard input */ | |
982 | return (-1); | |
983 | ||
984 | case 0x15: /* ^U - erase line */ | |
985 | while (col > plen) { | |
986 | puts (erase_seq); | |
987 | --col; | |
988 | } | |
989 | p = console_buffer; | |
990 | n = 0; | |
991 | continue; | |
992 | ||
993 | case 0x17: /* ^W - erase word */ | |
994 | p=delete_char(console_buffer, p, &col, &n, plen); | |
995 | while ((n > 0) && (*p != ' ')) { | |
996 | p=delete_char(console_buffer, p, &col, &n, plen); | |
997 | } | |
998 | continue; | |
999 | ||
1000 | case 0x08: /* ^H - backspace */ | |
1001 | case 0x7F: /* DEL - backspace */ | |
1002 | p=delete_char(console_buffer, p, &col, &n, plen); | |
1003 | continue; | |
1004 | ||
1005 | default: | |
1006 | /* | |
1007 | * Must be a normal character then | |
1008 | */ | |
1009 | if (n < CFG_CBSIZE-2) { | |
1010 | if (c == '\t') { /* expand TABs */ | |
04a85b3b WD |
1011 | #ifdef CONFIG_AUTO_COMPLETE |
1012 | /* if auto completion triggered just continue */ | |
1013 | *p = '\0'; | |
1014 | if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { | |
1015 | p = console_buffer + n; /* reset */ | |
1016 | continue; | |
1017 | } | |
1018 | #endif | |
c609719b WD |
1019 | puts (tab_seq+(col&07)); |
1020 | col += 8 - (col&07); | |
1021 | } else { | |
1022 | ++col; /* echo input */ | |
1023 | putc (c); | |
1024 | } | |
1025 | *p++ = c; | |
1026 | ++n; | |
1027 | } else { /* Buffer full */ | |
1028 | putc ('\a'); | |
1029 | } | |
1030 | } | |
1031 | } | |
501090aa | 1032 | #endif /* CONFIG_CMDLINE_EDITING */ |
c609719b WD |
1033 | } |
1034 | ||
1035 | /****************************************************************************/ | |
1036 | ||
3ca9122f | 1037 | #ifndef CONFIG_CMDLINE_EDITING |
c609719b WD |
1038 | static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) |
1039 | { | |
1040 | char *s; | |
1041 | ||
1042 | if (*np == 0) { | |
1043 | return (p); | |
1044 | } | |
1045 | ||
1046 | if (*(--p) == '\t') { /* will retype the whole line */ | |
1047 | while (*colp > plen) { | |
1048 | puts (erase_seq); | |
1049 | (*colp)--; | |
1050 | } | |
1051 | for (s=buffer; s<p; ++s) { | |
1052 | if (*s == '\t') { | |
1053 | puts (tab_seq+((*colp) & 07)); | |
1054 | *colp += 8 - ((*colp) & 07); | |
1055 | } else { | |
1056 | ++(*colp); | |
1057 | putc (*s); | |
1058 | } | |
1059 | } | |
1060 | } else { | |
1061 | puts (erase_seq); | |
1062 | (*colp)--; | |
1063 | } | |
1064 | (*np)--; | |
1065 | return (p); | |
1066 | } | |
3ca9122f | 1067 | #endif /* CONFIG_CMDLINE_EDITING */ |
c609719b WD |
1068 | |
1069 | /****************************************************************************/ | |
1070 | ||
1071 | int parse_line (char *line, char *argv[]) | |
1072 | { | |
1073 | int nargs = 0; | |
1074 | ||
1075 | #ifdef DEBUG_PARSER | |
1076 | printf ("parse_line: \"%s\"\n", line); | |
1077 | #endif | |
1078 | while (nargs < CFG_MAXARGS) { | |
1079 | ||
1080 | /* skip any white space */ | |
1081 | while ((*line == ' ') || (*line == '\t')) { | |
1082 | ++line; | |
1083 | } | |
1084 | ||
1085 | if (*line == '\0') { /* end of line, no more args */ | |
1086 | argv[nargs] = NULL; | |
1087 | #ifdef DEBUG_PARSER | |
1088 | printf ("parse_line: nargs=%d\n", nargs); | |
1089 | #endif | |
1090 | return (nargs); | |
1091 | } | |
1092 | ||
1093 | argv[nargs++] = line; /* begin of argument string */ | |
1094 | ||
1095 | /* find end of string */ | |
1096 | while (*line && (*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 | *line++ = '\0'; /* terminate current arg */ | |
1109 | } | |
1110 | ||
1111 | printf ("** Too many args (max. %d) **\n", CFG_MAXARGS); | |
1112 | ||
1113 | #ifdef DEBUG_PARSER | |
1114 | printf ("parse_line: nargs=%d\n", nargs); | |
1115 | #endif | |
1116 | return (nargs); | |
1117 | } | |
1118 | ||
1119 | /****************************************************************************/ | |
1120 | ||
1121 | static void process_macros (const char *input, char *output) | |
1122 | { | |
1123 | char c, prev; | |
1124 | const char *varname_start = NULL; | |
19973b6a | 1125 | int inputcnt = strlen (input); |
c609719b | 1126 | int outputcnt = CFG_CBSIZE; |
19973b6a WD |
1127 | int state = 0; /* 0 = waiting for '$' */ |
1128 | ||
1129 | /* 1 = waiting for '(' or '{' */ | |
1130 | /* 2 = waiting for ')' or '}' */ | |
1131 | /* 3 = waiting for ''' */ | |
c609719b WD |
1132 | #ifdef DEBUG_PARSER |
1133 | char *output_start = output; | |
1134 | ||
19973b6a WD |
1135 | printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input), |
1136 | input); | |
c609719b WD |
1137 | #endif |
1138 | ||
19973b6a | 1139 | prev = '\0'; /* previous character */ |
c609719b WD |
1140 | |
1141 | while (inputcnt && outputcnt) { | |
8bde7f77 | 1142 | c = *input++; |
19973b6a WD |
1143 | inputcnt--; |
1144 | ||
1145 | if (state != 3) { | |
1146 | /* remove one level of escape characters */ | |
1147 | if ((c == '\\') && (prev != '\\')) { | |
1148 | if (inputcnt-- == 0) | |
1149 | break; | |
1150 | prev = c; | |
1151 | c = *input++; | |
1152 | } | |
c609719b | 1153 | } |
19973b6a WD |
1154 | |
1155 | switch (state) { | |
1156 | case 0: /* Waiting for (unescaped) $ */ | |
1157 | if ((c == '\'') && (prev != '\\')) { | |
1158 | state = 3; | |
1159 | break; | |
1160 | } | |
1161 | if ((c == '$') && (prev != '\\')) { | |
1162 | state++; | |
1163 | } else { | |
c609719b WD |
1164 | *(output++) = c; |
1165 | outputcnt--; | |
1166 | } | |
19973b6a WD |
1167 | break; |
1168 | case 1: /* Waiting for ( */ | |
1169 | if (c == '(' || c == '{') { | |
1170 | state++; | |
1171 | varname_start = input; | |
1172 | } else { | |
1173 | state = 0; | |
1174 | *(output++) = '$'; | |
1175 | outputcnt--; | |
c609719b | 1176 | |
19973b6a WD |
1177 | if (outputcnt) { |
1178 | *(output++) = c; | |
c609719b WD |
1179 | outputcnt--; |
1180 | } | |
19973b6a WD |
1181 | } |
1182 | break; | |
1183 | case 2: /* Waiting for ) */ | |
1184 | if (c == ')' || c == '}') { | |
1185 | int i; | |
1186 | char envname[CFG_CBSIZE], *envval; | |
1187 | int envcnt = input - varname_start - 1; /* Varname # of chars */ | |
1188 | ||
1189 | /* Get the varname */ | |
1190 | for (i = 0; i < envcnt; i++) { | |
1191 | envname[i] = varname_start[i]; | |
1192 | } | |
1193 | envname[i] = 0; | |
1194 | ||
1195 | /* Get its value */ | |
1196 | envval = getenv (envname); | |
1197 | ||
1198 | /* Copy into the line if it exists */ | |
1199 | if (envval != NULL) | |
1200 | while ((*envval) && outputcnt) { | |
1201 | *(output++) = *(envval++); | |
1202 | outputcnt--; | |
1203 | } | |
1204 | /* Look for another '$' */ | |
1205 | state = 0; | |
1206 | } | |
1207 | break; | |
1208 | case 3: /* Waiting for ' */ | |
1209 | if ((c == '\'') && (prev != '\\')) { | |
1210 | state = 0; | |
1211 | } else { | |
1212 | *(output++) = c; | |
1213 | outputcnt--; | |
1214 | } | |
1215 | break; | |
a25f862b | 1216 | } |
19973b6a | 1217 | prev = c; |
c609719b WD |
1218 | } |
1219 | ||
1220 | if (outputcnt) | |
1221 | *output = 0; | |
1222 | ||
1223 | #ifdef DEBUG_PARSER | |
1224 | printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", | |
19973b6a | 1225 | strlen (output_start), output_start); |
c609719b WD |
1226 | #endif |
1227 | } | |
1228 | ||
1229 | /**************************************************************************** | |
1230 | * returns: | |
1231 | * 1 - command executed, repeatable | |
1232 | * 0 - command executed but not repeatable, interrupted commands are | |
1233 | * always considered not repeatable | |
1234 | * -1 - not executed (unrecognized, bootd recursion or too many args) | |
1235 | * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is | |
1236 | * considered unrecognized) | |
1237 | * | |
1238 | * WARNING: | |
1239 | * | |
1240 | * We must create a temporary copy of the command since the command we get | |
1241 | * may be the result from getenv(), which returns a pointer directly to | |
1242 | * the environment data, which may change magicly when the command we run | |
1243 | * creates or modifies environment variables (like "bootp" does). | |
1244 | */ | |
1245 | ||
1246 | int run_command (const char *cmd, int flag) | |
1247 | { | |
1248 | cmd_tbl_t *cmdtp; | |
1249 | char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */ | |
1250 | char *token; /* start of token in cmdbuf */ | |
1251 | char *sep; /* end of token (separator) in cmdbuf */ | |
1252 | char finaltoken[CFG_CBSIZE]; | |
1253 | char *str = cmdbuf; | |
1254 | char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ | |
f07771cc | 1255 | int argc, inquotes; |
c609719b | 1256 | int repeatable = 1; |
f07771cc | 1257 | int rc = 0; |
c609719b WD |
1258 | |
1259 | #ifdef DEBUG_PARSER | |
1260 | printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); | |
1261 | puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ | |
1262 | puts ("\"\n"); | |
1263 | #endif | |
1264 | ||
1265 | clear_ctrlc(); /* forget any previous Control C */ | |
1266 | ||
1267 | if (!cmd || !*cmd) { | |
1268 | return -1; /* empty command */ | |
1269 | } | |
1270 | ||
1271 | if (strlen(cmd) >= CFG_CBSIZE) { | |
1272 | puts ("## Command too long!\n"); | |
1273 | return -1; | |
1274 | } | |
1275 | ||
1276 | strcpy (cmdbuf, cmd); | |
1277 | ||
1278 | /* Process separators and check for invalid | |
1279 | * repeatable commands | |
1280 | */ | |
1281 | ||
1282 | #ifdef DEBUG_PARSER | |
1283 | printf ("[PROCESS_SEPARATORS] %s\n", cmd); | |
1284 | #endif | |
1285 | while (*str) { | |
1286 | ||
1287 | /* | |
1288 | * Find separator, or string end | |
1289 | * Allow simple escape of ';' by writing "\;" | |
1290 | */ | |
a25f862b WD |
1291 | for (inquotes = 0, sep = str; *sep; sep++) { |
1292 | if ((*sep=='\'') && | |
1293 | (*(sep-1) != '\\')) | |
1294 | inquotes=!inquotes; | |
1295 | ||
1296 | if (!inquotes && | |
1297 | (*sep == ';') && /* separator */ | |
c609719b WD |
1298 | ( sep != str) && /* past string start */ |
1299 | (*(sep-1) != '\\')) /* and NOT escaped */ | |
1300 | break; | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * Limit the token to data between separators | |
1305 | */ | |
1306 | token = str; | |
1307 | if (*sep) { | |
1308 | str = sep + 1; /* start of command for next pass */ | |
1309 | *sep = '\0'; | |
1310 | } | |
1311 | else | |
1312 | str = sep; /* no more commands for next pass */ | |
1313 | #ifdef DEBUG_PARSER | |
1314 | printf ("token: \"%s\"\n", token); | |
1315 | #endif | |
1316 | ||
1317 | /* find macros in this token and replace them */ | |
1318 | process_macros (token, finaltoken); | |
1319 | ||
1320 | /* Extract arguments */ | |
1264b405 WD |
1321 | if ((argc = parse_line (finaltoken, argv)) == 0) { |
1322 | rc = -1; /* no command at all */ | |
1323 | continue; | |
1324 | } | |
c609719b WD |
1325 | |
1326 | /* Look up command in command table */ | |
1327 | if ((cmdtp = find_cmd(argv[0])) == NULL) { | |
1328 | printf ("Unknown command '%s' - try 'help'\n", argv[0]); | |
f07771cc WD |
1329 | rc = -1; /* give up after bad command */ |
1330 | continue; | |
c609719b WD |
1331 | } |
1332 | ||
1333 | /* found - check max args */ | |
1334 | if (argc > cmdtp->maxargs) { | |
1335 | printf ("Usage:\n%s\n", cmdtp->usage); | |
f07771cc WD |
1336 | rc = -1; |
1337 | continue; | |
c609719b WD |
1338 | } |
1339 | ||
1340 | #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) | |
1341 | /* avoid "bootd" recursion */ | |
1342 | if (cmdtp->cmd == do_bootd) { | |
1343 | #ifdef DEBUG_PARSER | |
1344 | printf ("[%s]\n", finaltoken); | |
1345 | #endif | |
1346 | if (flag & CMD_FLAG_BOOTD) { | |
4b9206ed | 1347 | puts ("'bootd' recursion detected\n"); |
f07771cc WD |
1348 | rc = -1; |
1349 | continue; | |
1264b405 | 1350 | } else { |
c609719b | 1351 | flag |= CMD_FLAG_BOOTD; |
1264b405 | 1352 | } |
c609719b WD |
1353 | } |
1354 | #endif /* CFG_CMD_BOOTD */ | |
1355 | ||
1356 | /* OK - call function to do the command */ | |
1357 | if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) { | |
f07771cc | 1358 | rc = -1; |
c609719b WD |
1359 | } |
1360 | ||
1361 | repeatable &= cmdtp->repeatable; | |
1362 | ||
1363 | /* Did the user stop this? */ | |
1364 | if (had_ctrlc ()) | |
1365 | return 0; /* if stopped then not repeatable */ | |
1366 | } | |
1367 | ||
f07771cc | 1368 | return rc ? rc : repeatable; |
c609719b WD |
1369 | } |
1370 | ||
1371 | /****************************************************************************/ | |
1372 | ||
1373 | #if (CONFIG_COMMANDS & CFG_CMD_RUN) | |
1374 | int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
1375 | { | |
1376 | int i; | |
c609719b WD |
1377 | |
1378 | if (argc < 2) { | |
1379 | printf ("Usage:\n%s\n", cmdtp->usage); | |
1380 | return 1; | |
1381 | } | |
1382 | ||
1383 | for (i=1; i<argc; ++i) { | |
3e38691e WD |
1384 | char *arg; |
1385 | ||
1386 | if ((arg = getenv (argv[i])) == NULL) { | |
1387 | printf ("## Error: \"%s\" not defined\n", argv[i]); | |
1388 | return 1; | |
1389 | } | |
c609719b | 1390 | #ifndef CFG_HUSH_PARSER |
3e38691e WD |
1391 | if (run_command (arg, flag) == -1) |
1392 | return 1; | |
c609719b | 1393 | #else |
3e38691e | 1394 | if (parse_string_outer(arg, |
7aa78614 | 1395 | FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0) |
3e38691e | 1396 | return 1; |
c609719b WD |
1397 | #endif |
1398 | } | |
3e38691e | 1399 | return 0; |
c609719b | 1400 | } |
3e38691e | 1401 | #endif /* CFG_CMD_RUN */ |