1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 /* #define DEBUG */ 25 26 #include <common.h> 27 #include <watchdog.h> 28 #include <command.h> 29 #include <cmd_nvedit.h> 30 #include <cmd_bootm.h> 31 #include <malloc.h> 32 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY) 33 #include <cmd_boot.h> /* for do_reset() prototype */ 34 #endif 35 36 #ifdef CFG_HUSH_PARSER 37 #include <hush.h> 38 #endif 39 40 #define MAX_DELAY_STOP_STR 32 41 42 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); 43 static int parse_line (char *, char *[]); 44 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 45 static int abortboot(int); 46 #endif 47 48 #undef DEBUG_PARSER 49 50 char console_buffer[CFG_CBSIZE]; /* console I/O buffer */ 51 52 static char erase_seq[] = "\b \b"; /* erase sequence */ 53 static char tab_seq[] = " "; /* used to expand TABs */ 54 55 #ifdef CONFIG_BOOT_RETRY_TIME 56 static uint64_t endtime = 0; /* must be set, default is instant timeout */ 57 static int retry_time = -1; /* -1 so can call readline before main_loop */ 58 #endif 59 60 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) 61 62 #ifndef CONFIG_BOOT_RETRY_MIN 63 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 64 #endif 65 66 #ifdef CONFIG_MODEM_SUPPORT 67 int do_mdm_init = 0; 68 extern void mdm_init(void); /* defined in board.c */ 69 #endif 70 71 /*************************************************************************** 72 * Watch for 'delay' seconds for autoboot stop or autoboot delay string. 73 * returns: 0 - no key string, allow autoboot 74 * 1 - got key string, abort 75 */ 76 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 77 # if defined(CONFIG_AUTOBOOT_KEYED) 78 static __inline__ int abortboot(int bootdelay) 79 { 80 int abort = 0; 81 uint64_t etime = endtick(bootdelay); 82 struct 83 { 84 char* str; 85 u_int len; 86 int retry; 87 } 88 delaykey [] = 89 { 90 { str: getenv ("bootdelaykey"), retry: 1 }, 91 { str: getenv ("bootdelaykey2"), retry: 1 }, 92 { str: getenv ("bootstopkey"), retry: 0 }, 93 { str: getenv ("bootstopkey2"), retry: 0 }, 94 }; 95 96 char presskey [MAX_DELAY_STOP_STR]; 97 u_int presskey_len = 0; 98 u_int presskey_max = 0; 99 u_int i; 100 101 # ifdef CONFIG_AUTOBOOT_PROMPT 102 printf (CONFIG_AUTOBOOT_PROMPT, bootdelay); 103 # endif 104 105 # ifdef CONFIG_AUTOBOOT_DELAY_STR 106 if (delaykey[0].str == NULL) 107 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; 108 # endif 109 # ifdef CONFIG_AUTOBOOT_DELAY_STR2 110 if (delaykey[1].str == NULL) 111 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; 112 # endif 113 # ifdef CONFIG_AUTOBOOT_STOP_STR 114 if (delaykey[2].str == NULL) 115 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; 116 # endif 117 # ifdef CONFIG_AUTOBOOT_STOP_STR2 118 if (delaykey[3].str == NULL) 119 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; 120 # endif 121 122 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 123 delaykey[i].len = delaykey[i].str == NULL ? 124 0 : strlen (delaykey[i].str); 125 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? 126 MAX_DELAY_STOP_STR : delaykey[i].len; 127 128 presskey_max = presskey_max > delaykey[i].len ? 129 presskey_max : delaykey[i].len; 130 131 # if DEBUG_BOOTKEYS 132 printf("%s key:<%s>\n", 133 delaykey[i].retry ? "delay" : "stop", 134 delaykey[i].str ? delaykey[i].str : "NULL"); 135 # endif 136 } 137 138 /* In order to keep up with incoming data, check timeout only 139 * when catch up. 140 */ 141 while (!abort && get_ticks() <= etime) { 142 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 143 if (delaykey[i].len > 0 && 144 presskey_len >= delaykey[i].len && 145 memcmp (presskey + presskey_len - delaykey[i].len, 146 delaykey[i].str, 147 delaykey[i].len) == 0) { 148 # if DEBUG_BOOTKEYS 149 printf("got %skey\n", 150 delaykey[i].retry ? "delay" : "stop"); 151 # endif 152 153 # ifdef CONFIG_BOOT_RETRY_TIME 154 /* don't retry auto boot */ 155 if (! delaykey[i].retry) 156 retry_time = -1; 157 # endif 158 abort = 1; 159 } 160 } 161 162 if (tstc()) { 163 if (presskey_len < presskey_max) { 164 presskey [presskey_len ++] = getc(); 165 } 166 else { 167 for (i = 0; i < presskey_max - 1; i ++) 168 presskey [i] = presskey [i + 1]; 169 170 presskey [i] = getc(); 171 } 172 } 173 } 174 # if DEBUG_BOOTKEYS 175 if (!abort) 176 printf("key timeout\n"); 177 # endif 178 179 return abort; 180 } 181 182 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ 183 184 #ifdef CONFIG_MENUKEY 185 static int menukey = 0; 186 #endif 187 188 static __inline__ int abortboot(int bootdelay) 189 { 190 int abort = 0; 191 192 #ifdef CONFIG_MENUPROMPT 193 printf(CONFIG_MENUPROMPT, bootdelay); 194 #else 195 printf("Hit any key to stop autoboot: %2d ", bootdelay); 196 #endif 197 198 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 199 /* 200 * Check if key already pressed 201 * Don't check if bootdelay < 0 202 */ 203 if (bootdelay >= 0) { 204 if (tstc()) { /* we got a key press */ 205 (void) getc(); /* consume input */ 206 printf ("\b\b\b 0\n"); 207 return 1; /* don't auto boot */ 208 } 209 } 210 #endif 211 212 while (bootdelay > 0) { 213 int i; 214 215 --bootdelay; 216 /* delay 100 * 10ms */ 217 for (i=0; !abort && i<100; ++i) { 218 if (tstc()) { /* we got a key press */ 219 abort = 1; /* don't auto boot */ 220 bootdelay = 0; /* no more delay */ 221 # ifdef CONFIG_MENUKEY 222 menukey = getc(); 223 # else 224 (void) getc(); /* consume input */ 225 # endif 226 break; 227 } 228 udelay (10000); 229 } 230 231 printf ("\b\b\b%2d ", bootdelay); 232 } 233 234 putc ('\n'); 235 236 return abort; 237 } 238 # endif /* CONFIG_AUTOBOOT_KEYED */ 239 #endif /* CONFIG_BOOTDELAY >= 0 */ 240 241 /****************************************************************************/ 242 243 void main_loop (void) 244 { 245 #ifndef CFG_HUSH_PARSER 246 static char lastcommand[CFG_CBSIZE] = { 0, }; 247 int len; 248 int rc = 1; 249 int flag; 250 #endif 251 252 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 253 char *s; 254 int bootdelay; 255 #endif 256 #ifdef CONFIG_PREBOOT 257 char *p; 258 #endif 259 260 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO) 261 ulong bmp = 0; /* default bitmap */ 262 extern int trab_vfd (ulong bitmap); 263 264 #ifdef CONFIG_MODEM_SUPPORT 265 if (do_mdm_init) 266 bmp = 1; /* alternate bitmap */ 267 #endif 268 trab_vfd (bmp); 269 #endif /* CONFIG_VFD && VFD_TEST_LOGO */ 270 271 #ifdef CONFIG_MODEM_SUPPORT 272 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 273 if (do_mdm_init) { 274 uchar *str = strdup(getenv("mdm_cmd")); 275 setenv ("preboot", str); /* set or delete definition */ 276 if (str != NULL) 277 free (str); 278 mdm_init(); /* wait for modem connection */ 279 } 280 #endif /* CONFIG_MODEM_SUPPORT */ 281 282 #ifdef CONFIG_VERSION_VARIABLE 283 { 284 extern char version_string[]; 285 char *str = getenv("ver"); 286 287 if (!str) 288 setenv ("ver", version_string); /* set version variable */ 289 } 290 #endif /* CONFIG_VERSION_VARIABLE */ 291 292 #ifdef CFG_HUSH_PARSER 293 u_boot_hush_start (); 294 #endif 295 296 #ifdef CONFIG_PREBOOT 297 if ((p = getenv ("preboot")) != NULL) { 298 # ifdef CONFIG_AUTOBOOT_KEYED 299 int prev = disable_ctrlc(1); /* disable Control C checking */ 300 # endif 301 302 # ifndef CFG_HUSH_PARSER 303 run_command (p, 0); 304 # else 305 parse_string_outer(p, FLAG_PARSE_SEMICOLON | 306 FLAG_EXIT_FROM_LOOP); 307 # endif 308 309 # ifdef CONFIG_AUTOBOOT_KEYED 310 disable_ctrlc(prev); /* restore Control C checking */ 311 # endif 312 } 313 #endif /* CONFIG_PREBOOT */ 314 315 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 316 s = getenv ("bootdelay"); 317 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 318 319 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 320 321 # ifdef CONFIG_BOOT_RETRY_TIME 322 init_cmd_timeout (); 323 # endif /* CONFIG_BOOT_RETRY_TIME */ 324 325 s = getenv ("bootcmd"); 326 327 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 328 329 if (bootdelay >= 0 && s && !abortboot (bootdelay)) { 330 # ifdef CONFIG_AUTOBOOT_KEYED 331 int prev = disable_ctrlc(1); /* disable Control C checking */ 332 # endif 333 334 # ifndef CFG_HUSH_PARSER 335 run_command (s, 0); 336 # else 337 parse_string_outer(s, FLAG_PARSE_SEMICOLON | 338 FLAG_EXIT_FROM_LOOP); 339 # endif 340 341 # ifdef CONFIG_AUTOBOOT_KEYED 342 disable_ctrlc(prev); /* restore Control C checking */ 343 # endif 344 } 345 346 # ifdef CONFIG_MENUKEY 347 if (menukey == CONFIG_MENUKEY) { 348 s = getenv("menucmd"); 349 if (s) { 350 # ifndef CFG_HUSH_PARSER 351 run_command (s, bd, 0); 352 # else 353 parse_string_outer(s, FLAG_PARSE_SEMICOLON | 354 FLAG_EXIT_FROM_LOOP); 355 # endif 356 } 357 } 358 #endif /* CONFIG_MENUKEY */ 359 #endif /* CONFIG_BOOTDELAY */ 360 361 #ifdef CONFIG_AMIGAONEG3SE 362 { 363 extern void video_banner(void); 364 video_banner(); 365 } 366 #endif 367 368 /* 369 * Main Loop for Monitor Command Processing 370 */ 371 #ifdef CFG_HUSH_PARSER 372 parse_file_outer(); 373 /* This point is never reached */ 374 for (;;); 375 #else 376 for (;;) { 377 #ifdef CONFIG_BOOT_RETRY_TIME 378 if (rc >= 0) { 379 /* Saw enough of a valid command to 380 * restart the timeout. 381 */ 382 reset_cmd_timeout(); 383 } 384 #endif 385 len = readline (CFG_PROMPT); 386 387 flag = 0; /* assume no special flags for now */ 388 if (len > 0) 389 strcpy (lastcommand, console_buffer); 390 else if (len == 0) 391 flag |= CMD_FLAG_REPEAT; 392 #ifdef CONFIG_BOOT_RETRY_TIME 393 else if (len == -2) { 394 /* -2 means timed out, retry autoboot 395 */ 396 printf("\nTimed out waiting for command\n"); 397 # ifdef CONFIG_RESET_TO_RETRY 398 /* Reinit board to run initialization code again */ 399 do_reset (NULL, 0, 0, NULL); 400 # else 401 return; /* retry autoboot */ 402 # endif 403 } 404 #endif 405 406 if (len == -1) 407 printf ("<INTERRUPT>\n"); 408 else 409 rc = run_command (lastcommand, flag); 410 411 if (rc <= 0) { 412 /* invalid command or not repeatable, forget it */ 413 lastcommand[0] = 0; 414 } 415 } 416 #endif /*CFG_HUSH_PARSER*/ 417 } 418 419 #ifdef CONFIG_BOOT_RETRY_TIME 420 /*************************************************************************** 421 * initialise command line timeout 422 */ 423 void init_cmd_timeout(void) 424 { 425 char *s = getenv ("bootretry"); 426 427 if (s != NULL) 428 retry_time = (int)simple_strtoul(s, NULL, 10); 429 else 430 retry_time = CONFIG_BOOT_RETRY_TIME; 431 432 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 433 retry_time = CONFIG_BOOT_RETRY_MIN; 434 } 435 436 /*************************************************************************** 437 * reset command line timeout to retry_time seconds 438 */ 439 void reset_cmd_timeout(void) 440 { 441 endtime = endtick(retry_time); 442 } 443 #endif 444 445 /****************************************************************************/ 446 447 /* 448 * Prompt for input and read a line. 449 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 450 * time out when time goes past endtime (timebase time in ticks). 451 * Return: number of read characters 452 * -1 if break 453 * -2 if timed out 454 */ 455 int readline (const char *const prompt) 456 { 457 char *p = console_buffer; 458 int n = 0; /* buffer index */ 459 int plen = 0; /* prompt length */ 460 int col; /* output column cnt */ 461 char c; 462 463 /* print prompt */ 464 if (prompt) { 465 plen = strlen (prompt); 466 puts (prompt); 467 } 468 col = plen; 469 470 for (;;) { 471 #ifdef CONFIG_BOOT_RETRY_TIME 472 while (!tstc()) { /* while no incoming data */ 473 if (retry_time >= 0 && get_ticks() > endtime) 474 return (-2); /* timed out */ 475 } 476 #endif 477 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 478 479 #ifdef CONFIG_SHOW_ACTIVITY 480 while (!tstc()) { 481 extern void show_activity(int arg); 482 show_activity(0); 483 } 484 #endif 485 c = getc(); 486 487 /* 488 * Special character handling 489 */ 490 switch (c) { 491 case '\r': /* Enter */ 492 case '\n': 493 *p = '\0'; 494 puts ("\r\n"); 495 return (p - console_buffer); 496 497 case 0x03: /* ^C - break */ 498 console_buffer[0] = '\0'; /* discard input */ 499 return (-1); 500 501 case 0x15: /* ^U - erase line */ 502 while (col > plen) { 503 puts (erase_seq); 504 --col; 505 } 506 p = console_buffer; 507 n = 0; 508 continue; 509 510 case 0x17: /* ^W - erase word */ 511 p=delete_char(console_buffer, p, &col, &n, plen); 512 while ((n > 0) && (*p != ' ')) { 513 p=delete_char(console_buffer, p, &col, &n, plen); 514 } 515 continue; 516 517 case 0x08: /* ^H - backspace */ 518 case 0x7F: /* DEL - backspace */ 519 p=delete_char(console_buffer, p, &col, &n, plen); 520 continue; 521 522 default: 523 /* 524 * Must be a normal character then 525 */ 526 if (n < CFG_CBSIZE-2) { 527 if (c == '\t') { /* expand TABs */ 528 puts (tab_seq+(col&07)); 529 col += 8 - (col&07); 530 } else { 531 ++col; /* echo input */ 532 putc (c); 533 } 534 *p++ = c; 535 ++n; 536 } else { /* Buffer full */ 537 putc ('\a'); 538 } 539 } 540 } 541 } 542 543 /****************************************************************************/ 544 545 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 546 { 547 char *s; 548 549 if (*np == 0) { 550 return (p); 551 } 552 553 if (*(--p) == '\t') { /* will retype the whole line */ 554 while (*colp > plen) { 555 puts (erase_seq); 556 (*colp)--; 557 } 558 for (s=buffer; s<p; ++s) { 559 if (*s == '\t') { 560 puts (tab_seq+((*colp) & 07)); 561 *colp += 8 - ((*colp) & 07); 562 } else { 563 ++(*colp); 564 putc (*s); 565 } 566 } 567 } else { 568 puts (erase_seq); 569 (*colp)--; 570 } 571 (*np)--; 572 return (p); 573 } 574 575 /****************************************************************************/ 576 577 int parse_line (char *line, char *argv[]) 578 { 579 int nargs = 0; 580 581 #ifdef DEBUG_PARSER 582 printf ("parse_line: \"%s\"\n", line); 583 #endif 584 while (nargs < CFG_MAXARGS) { 585 586 /* skip any white space */ 587 while ((*line == ' ') || (*line == '\t')) { 588 ++line; 589 } 590 591 if (*line == '\0') { /* end of line, no more args */ 592 argv[nargs] = NULL; 593 #ifdef DEBUG_PARSER 594 printf ("parse_line: nargs=%d\n", nargs); 595 #endif 596 return (nargs); 597 } 598 599 argv[nargs++] = line; /* begin of argument string */ 600 601 /* find end of string */ 602 while (*line && (*line != ' ') && (*line != '\t')) { 603 ++line; 604 } 605 606 if (*line == '\0') { /* end of line, no more args */ 607 argv[nargs] = NULL; 608 #ifdef DEBUG_PARSER 609 printf ("parse_line: nargs=%d\n", nargs); 610 #endif 611 return (nargs); 612 } 613 614 *line++ = '\0'; /* terminate current arg */ 615 } 616 617 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS); 618 619 #ifdef DEBUG_PARSER 620 printf ("parse_line: nargs=%d\n", nargs); 621 #endif 622 return (nargs); 623 } 624 625 /****************************************************************************/ 626 627 static void process_macros (const char *input, char *output) 628 { 629 char c, prev; 630 const char *varname_start = NULL; 631 int inputcnt = strlen (input); 632 int outputcnt = CFG_CBSIZE; 633 int state = 0; /* 0 = waiting for '$' */ 634 /* 1 = waiting for '(' */ 635 /* 2 = waiting for ')' */ 636 /* 3 = waiting for ''' */ 637 #ifdef DEBUG_PARSER 638 char *output_start = output; 639 640 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input); 641 #endif 642 643 prev = '\0'; /* previous character */ 644 645 while (inputcnt && outputcnt) { 646 c = *input++; 647 inputcnt--; 648 649 if (state!=3) { 650 /* remove one level of escape characters */ 651 if ((c == '\\') && (prev != '\\')) { 652 if (inputcnt-- == 0) 653 break; 654 prev = c; 655 c = *input++; 656 } 657 } 658 659 switch (state) { 660 case 0: /* Waiting for (unescaped) $ */ 661 if ((c == '\'') && (prev != '\\')) { 662 state = 3; 663 break; 664 } 665 if ((c == '$') && (prev != '\\')) { 666 state++; 667 } else { 668 *(output++) = c; 669 outputcnt--; 670 } 671 break; 672 case 1: /* Waiting for ( */ 673 if (c == '(') { 674 state++; 675 varname_start = input; 676 } else { 677 state = 0; 678 *(output++) = '$'; 679 outputcnt--; 680 681 if (outputcnt) { 682 *(output++) = c; 683 outputcnt--; 684 } 685 } 686 break; 687 case 2: /* Waiting for ) */ 688 if (c == ')') { 689 int i; 690 char envname[CFG_CBSIZE], *envval; 691 int envcnt = input-varname_start-1; /* Varname # of chars */ 692 693 /* Get the varname */ 694 for (i = 0; i < envcnt; i++) { 695 envname[i] = varname_start[i]; 696 } 697 envname[i] = 0; 698 699 /* Get its value */ 700 envval = getenv (envname); 701 702 /* Copy into the line if it exists */ 703 if (envval != NULL) 704 while ((*envval) && outputcnt) { 705 *(output++) = *(envval++); 706 outputcnt--; 707 } 708 /* Look for another '$' */ 709 state = 0; 710 } 711 break; 712 case 3: /* Waiting for ' */ 713 if ((c == '\'') && (prev != '\\')) { 714 state = 0; 715 } else { 716 *(output++) = c; 717 outputcnt--; 718 } 719 break; 720 } 721 prev = c; 722 } 723 724 if (outputcnt) 725 *output = 0; 726 727 #ifdef DEBUG_PARSER 728 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 729 strlen(output_start), output_start); 730 #endif 731 } 732 733 /**************************************************************************** 734 * returns: 735 * 1 - command executed, repeatable 736 * 0 - command executed but not repeatable, interrupted commands are 737 * always considered not repeatable 738 * -1 - not executed (unrecognized, bootd recursion or too many args) 739 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is 740 * considered unrecognized) 741 * 742 * WARNING: 743 * 744 * We must create a temporary copy of the command since the command we get 745 * may be the result from getenv(), which returns a pointer directly to 746 * the environment data, which may change magicly when the command we run 747 * creates or modifies environment variables (like "bootp" does). 748 */ 749 750 int run_command (const char *cmd, int flag) 751 { 752 cmd_tbl_t *cmdtp; 753 char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */ 754 char *token; /* start of token in cmdbuf */ 755 char *sep; /* end of token (separator) in cmdbuf */ 756 char finaltoken[CFG_CBSIZE]; 757 char *str = cmdbuf; 758 char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ 759 int argc, inquotes; 760 int repeatable = 1; 761 int rc = 0; 762 763 #ifdef DEBUG_PARSER 764 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 765 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 766 puts ("\"\n"); 767 #endif 768 769 clear_ctrlc(); /* forget any previous Control C */ 770 771 if (!cmd || !*cmd) { 772 return -1; /* empty command */ 773 } 774 775 if (strlen(cmd) >= CFG_CBSIZE) { 776 puts ("## Command too long!\n"); 777 return -1; 778 } 779 780 strcpy (cmdbuf, cmd); 781 782 /* Process separators and check for invalid 783 * repeatable commands 784 */ 785 786 #ifdef DEBUG_PARSER 787 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 788 #endif 789 while (*str) { 790 791 /* 792 * Find separator, or string end 793 * Allow simple escape of ';' by writing "\;" 794 */ 795 for (inquotes = 0, sep = str; *sep; sep++) { 796 if ((*sep=='\'') && 797 (*(sep-1) != '\\')) 798 inquotes=!inquotes; 799 800 if (!inquotes && 801 (*sep == ';') && /* separator */ 802 ( sep != str) && /* past string start */ 803 (*(sep-1) != '\\')) /* and NOT escaped */ 804 break; 805 } 806 807 /* 808 * Limit the token to data between separators 809 */ 810 token = str; 811 if (*sep) { 812 str = sep + 1; /* start of command for next pass */ 813 *sep = '\0'; 814 } 815 else 816 str = sep; /* no more commands for next pass */ 817 #ifdef DEBUG_PARSER 818 printf ("token: \"%s\"\n", token); 819 #endif 820 821 /* find macros in this token and replace them */ 822 process_macros (token, finaltoken); 823 824 /* Extract arguments */ 825 argc = parse_line (finaltoken, argv); 826 827 /* Look up command in command table */ 828 if ((cmdtp = find_cmd(argv[0])) == NULL) { 829 printf ("Unknown command '%s' - try 'help'\n", argv[0]); 830 rc = -1; /* give up after bad command */ 831 continue; 832 } 833 834 /* found - check max args */ 835 if (argc > cmdtp->maxargs) { 836 printf ("Usage:\n%s\n", cmdtp->usage); 837 rc = -1; 838 continue; 839 } 840 841 #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) 842 /* avoid "bootd" recursion */ 843 if (cmdtp->cmd == do_bootd) { 844 #ifdef DEBUG_PARSER 845 printf ("[%s]\n", finaltoken); 846 #endif 847 if (flag & CMD_FLAG_BOOTD) { 848 printf ("'bootd' recursion detected\n"); 849 rc = -1; 850 continue; 851 } 852 else 853 flag |= CMD_FLAG_BOOTD; 854 } 855 #endif /* CFG_CMD_BOOTD */ 856 857 /* OK - call function to do the command */ 858 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) { 859 rc = -1; 860 } 861 862 repeatable &= cmdtp->repeatable; 863 864 /* Did the user stop this? */ 865 if (had_ctrlc ()) 866 return 0; /* if stopped then not repeatable */ 867 } 868 869 return rc ? rc : repeatable; 870 } 871 872 /****************************************************************************/ 873 874 #if (CONFIG_COMMANDS & CFG_CMD_RUN) 875 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 876 { 877 int i; 878 879 if (argc < 2) { 880 printf ("Usage:\n%s\n", cmdtp->usage); 881 return 1; 882 } 883 884 for (i=1; i<argc; ++i) { 885 char *arg; 886 887 if ((arg = getenv (argv[i])) == NULL) { 888 printf ("## Error: \"%s\" not defined\n", argv[i]); 889 return 1; 890 } 891 #ifndef CFG_HUSH_PARSER 892 if (run_command (arg, flag) == -1) 893 return 1; 894 #else 895 if (parse_string_outer(arg, 896 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0) 897 return 1; 898 #endif 899 } 900 return 0; 901 } 902 #endif /* CFG_CMD_RUN */ 903