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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008, Duane Ellis                                       *
   9  *   openocd@duaneeellis.com                                               *
  10  *                                                                         *
  11  *   part of this file is taken from libcli (libcli.sourceforge.net)       *
  12  *   Copyright (C) David Parrish (david@dparrish.com)                      *
  13  *                                                                         *
  14  *   This program is free software; you can redistribute it and/or modify  *
  15  *   it under the terms of the GNU General Public License as published by  *
  16  *   the Free Software Foundation; either version 2 of the License, or     *
  17  *   (at your option) any later version.                                   *
  18  *                                                                         *
  19  *   This program is distributed in the hope that it will be useful,       *
  20  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  21  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  22  *   GNU General Public License for more details.                          *
  23  *                                                                         *
  24  *   You should have received a copy of the GNU General Public License     *
  25  *   along with this program; if not, write to the                         *
  26  *   Free Software Foundation, Inc.,                                       *
  27  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  28  ***************************************************************************/
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 /* see Embedded-HOWTO.txt in Jim Tcl project hosted on BerliOS*/
  35 #define JIM_EMBEDDED
  36
  37 /* @todo the inclusion of target.h here is a layering violation */
  38 #include <jtag/jtag.h>
  39 #include <target/target.h>
  40 #include "command.h"
  41 #include "configuration.h"
  42 #include "log.h"
  43 #include "time_support.h"
  44 #include "jim-eventloop.h"
  45
  46 /* nice short description of source file */
  47 #define __THIS__FILE__ "command.c"
  48
  49 static int run_command(struct command_context *context,
  50                 struct command *c, const char *words[], unsigned num_words);
  51
  52 struct log_capture_state {
  53         Jim_Interp *interp;
  54         Jim_Obj *output;
  55 };
  56
  57 static void tcl_output(void *privData, const char *file, unsigned line,
  58         const char *function, const char *string)
  59 {
  60         struct log_capture_state *state = (struct log_capture_state *)privData;
  61         Jim_AppendString(state->interp, state->output, string, strlen(string));
  62 }
  63
  64 static struct log_capture_state *command_log_capture_start(Jim_Interp *interp)
  65 {
  66         /* capture log output and return it. A garbage collect can
  67          * happen, so we need a reference count to this object */
  68         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
  69         if (NULL == tclOutput)
  70                 return NULL;
  71
  72         struct log_capture_state *state = malloc(sizeof(*state));
  73         if (NULL == state)
  74                 return NULL;
  75
  76         state->interp = interp;
  77         Jim_IncrRefCount(tclOutput);
  78         state->output = tclOutput;
  79
  80         log_add_callback(tcl_output, state);
  81
  82         return state;
  83 }
  84
  85 /* Classic openocd commands provide progress output which we
  86  * will capture and return as a Tcl return value.
  87  *
  88  * However, if a non-openocd command has been invoked, then it
  89  * makes sense to return the tcl return value from that command.
  90  *
  91  * The tcl return value is empty for openocd commands that provide
  92  * progress output.
  93  *
  94  * Therefore we set the tcl return value only if we actually
  95  * captured output.
  96  */
  97 static void command_log_capture_finish(struct log_capture_state *state)
  98 {
  99         if (NULL == state)
 100                 return;
 101
 102         log_remove_callback(tcl_output, state);
 103
 104         int length;
 105         Jim_GetString(state->output, &length);
 106
 107         if (length > 0)
 108                 Jim_SetResult(state->interp, state->output);
 109         else {
 110                 /* No output captured, use tcl return value (which could
 111                  * be empty too). */
 112         }
 113         Jim_DecrRefCount(state->interp, state->output);
 114
 115         free(state);
 116 }
 117
 118 static int command_retval_set(Jim_Interp *interp, int retval)
 119 {
 120         int *return_retval = Jim_GetAssocData(interp, "retval");
 121         if (return_retval != NULL)
 122                 *return_retval = retval;
 123
 124         return (retval == ERROR_OK) ? JIM_OK : JIM_ERR;
 125 }
 126
 127 extern struct command_context *global_cmd_ctx;
 128
 129 /* dump a single line to the log for the command.
 130  * Do nothing in case we are not at debug level 3 */
 131 void script_debug(Jim_Interp *interp, const char *name,
 132         unsigned argc, Jim_Obj * const *argv)
 133 {
 134         if (debug_level < LOG_LVL_DEBUG)
 135                 return;
 136
 137         char *dbg = alloc_printf("command - %s", name);
 138         for (unsigned i = 0; i < argc; i++) {
 139                 int len;
 140                 const char *w = Jim_GetString(argv[i], &len);
 141                 char *t = alloc_printf("%s %s", dbg, w);
 142                 free(dbg);
 143                 dbg = t;
 144         }
 145         LOG_DEBUG("%s", dbg);
 146         free(dbg);
 147 }
 148
 149 static void script_command_args_free(const char **words, unsigned nwords)
 150 {
 151         for (unsigned i = 0; i < nwords; i++)
 152                 free((void *)words[i]);
 153         free(words);
 154 }
 155
 156 static const char **script_command_args_alloc(
 157         unsigned argc, Jim_Obj * const *argv, unsigned *nwords)
 158 {
 159         const char **words = malloc(argc * sizeof(char *));
 160         if (NULL == words)
 161                 return NULL;
 162
 163         unsigned i;
 164         for (i = 0; i < argc; i++) {
 165                 int len;
 166                 const char *w = Jim_GetString(argv[i], &len);
 167                 words[i] = strdup(w);
 168                 if (words[i] == NULL) {
 169                         script_command_args_free(words, i);
 170                         return NULL;
 171                 }
 172         }
 173         *nwords = i;
 174         return words;
 175 }
 176
 177 struct command_context *current_command_context(Jim_Interp *interp)
 178 {
 179         /* grab the command context from the associated data */
 180         struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
 181         if (NULL == cmd_ctx) {
 182                 /* Tcl can invoke commands directly instead of via command_run_line(). This would
 183                  * happen when the Jim Tcl interpreter is provided by eCos or if we are running
 184                  * commands in a startup script.
 185                  *
 186                  * A telnet or gdb server would provide a non-default command context to
 187                  * handle piping of error output, have a separate current target, etc.
 188                  */
 189                 cmd_ctx = global_cmd_ctx;
 190         }
 191         return cmd_ctx;
 192 }
 193
 194 static int script_command_run(Jim_Interp *interp,
 195         int argc, Jim_Obj * const *argv, struct command *c, bool capture)
 196 {
 197         target_call_timer_callbacks_now();
 198         LOG_USER_N("%s", "");   /* Keep GDB connection alive*/
 199
 200         unsigned nwords;
 201         const char **words = script_command_args_alloc(argc, argv, &nwords);
 202         if (NULL == words)
 203                 return JIM_ERR;
 204
 205         struct log_capture_state *state = NULL;
 206         if (capture)
 207                 state = command_log_capture_start(interp);
 208
 209         struct command_context *cmd_ctx = current_command_context(interp);
 210         int retval = run_command(cmd_ctx, c, (const char **)words, nwords);
 211
 212         command_log_capture_finish(state);
 213
 214         script_command_args_free(words, nwords);
 215         return command_retval_set(interp, retval);
 216 }
 217
 218 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 219 {
 220         /* the private data is stashed in the interp structure */
 221
 222         struct command *c = interp->cmdPrivData;
 223         assert(c);
 224         script_debug(interp, c->name, argc, argv);
 225         return script_command_run(interp, argc, argv, c, true);
 226 }
 227
 228 static struct command *command_root(struct command *c)
 229 {
 230         while (NULL != c->parent)
 231                 c = c->parent;
 232         return c;
 233 }
 234
 235 /**
 236  * Find a command by name from a list of commands.
 237  * @returns Returns the named command if it exists in the list.
 238  * Returns NULL otherwise.
 239  */
 240 static struct command *command_find(struct command *head, const char *name)
 241 {
 242         for (struct command *cc = head; cc; cc = cc->next) {
 243                 if (strcmp(cc->name, name) == 0)
 244                         return cc;
 245         }
 246         return NULL;
 247 }
 248
 249 struct command *command_find_in_context(struct command_context *cmd_ctx,
 250         const char *name)
 251 {
 252         return command_find(cmd_ctx->commands, name);
 253 }
 254 struct command *command_find_in_parent(struct command *parent,
 255         const char *name)
 256 {
 257         return command_find(parent->children, name);
 258 }
 259
 260 /**
 261  * Add the command into the linked list, sorted by name.
 262  * @param head Address to head of command list pointer, which may be
 263  * updated if @c c gets inserted at the beginning of the list.
 264  * @param c The command to add to the list pointed to by @c head.
 265  */
 266 static void command_add_child(struct command **head, struct command *c)
 267 {
 268         assert(head);
 269         if (NULL == *head) {
 270                 *head = c;
 271                 return;
 272         }
 273
 274         while ((*head)->next && (strcmp(c->name, (*head)->name) > 0))
 275                 head = &(*head)->next;
 276
 277         if (strcmp(c->name, (*head)->name) > 0) {
 278                 c->next = (*head)->next;
 279                 (*head)->next = c;
 280         } else {
 281                 c->next = *head;
 282                 *head = c;
 283         }
 284 }
 285
 286 static struct command **command_list_for_parent(
 287         struct command_context *cmd_ctx, struct command *parent)
 288 {
 289         return parent ? &parent->children : &cmd_ctx->commands;
 290 }
 291
 292 static void command_free(struct command *c)
 293 {
 294         /** @todo if command has a handler, unregister its jim command! */
 295
 296         while (NULL != c->children) {
 297                 struct command *tmp = c->children;
 298                 c->children = tmp->next;
 299                 command_free(tmp);
 300         }
 301
 302         if (c->name)
 303                 free((void *)c->name);
 304         if (c->help)
 305                 free((void *)c->help);
 306         if (c->usage)
 307                 free((void *)c->usage);
 308         free(c);
 309 }
 310
 311 static struct command *command_new(struct command_context *cmd_ctx,
 312         struct command *parent, const struct command_registration *cr)
 313 {
 314         assert(cr->name);
 315
 316         /*
 317          * If it is a non-jim command with no .usage specified,
 318          * log an error.
 319          *
 320          * strlen(.usage) == 0 means that the command takes no
 321          * arguments.
 322         */
 323         if ((cr->jim_handler == NULL) && (cr->usage == NULL)) {
 324                 LOG_DEBUG("BUG: command '%s%s%s' does not have the "
 325                         "'.usage' field filled out",
 326                         parent && parent->name ? parent->name : "",
 327                         parent && parent->name ? " " : "",
 328                         cr->name);
 329         }
 330
 331         struct command *c = calloc(1, sizeof(struct command));
 332         if (NULL == c)
 333                 return NULL;
 334
 335         c->name = strdup(cr->name);
 336         if (cr->help)
 337                 c->help = strdup(cr->help);
 338         if (cr->usage)
 339                 c->usage = strdup(cr->usage);
 340
 341         if (!c->name || (cr->help && !c->help) || (cr->usage && !c->usage))
 342                 goto command_new_error;
 343
 344         c->parent = parent;
 345         c->handler = cr->handler;
 346         c->jim_handler = cr->jim_handler;
 347         c->jim_handler_data = cr->jim_handler_data;
 348         c->mode = cr->mode;
 349
 350         command_add_child(command_list_for_parent(cmd_ctx, parent), c);
 351
 352         return c;
 353
 354 command_new_error:
 355         command_free(c);
 356         return NULL;
 357 }
 358
 359 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 360
 361 static int register_command_handler(struct command_context *cmd_ctx,
 362         struct command *c)
 363 {
 364         Jim_Interp *interp = cmd_ctx->interp;
 365         const char *ocd_name = alloc_printf("ocd_%s", c->name);
 366         if (NULL == ocd_name)
 367                 return JIM_ERR;
 368
 369         LOG_DEBUG("registering '%s'...", ocd_name);
 370
 371         Jim_CmdProc func = c->handler ? &script_command : &command_unknown;
 372         int retval = Jim_CreateCommand(interp, ocd_name, func, c, NULL);
 373         free((void *)ocd_name);
 374         if (JIM_OK != retval)
 375                 return retval;
 376
 377         /* we now need to add an overrideable proc */
 378         const char *override_name = alloc_printf(
 379                         "proc %s {args} {eval ocd_bouncer %s $args}",
 380                         c->name, c->name);
 381         if (NULL == override_name)
 382                 return JIM_ERR;
 383
 384         retval = Jim_Eval_Named(interp, override_name, 0, 0);
 385         free((void *)override_name);
 386
 387         return retval;
 388 }
 389
 390 struct command *register_command(struct command_context *context,
 391         struct command *parent, const struct command_registration *cr)
 392 {
 393         if (!context || !cr->name)
 394                 return NULL;
 395
 396         const char *name = cr->name;
 397         struct command **head = command_list_for_parent(context, parent);
 398         struct command *c = command_find(*head, name);
 399         if (NULL != c) {
 400                 /* TODO: originally we treated attempting to register a cmd twice as an error
 401                  * Sometimes we need this behaviour, such as with flash banks.
 402                  * http://www.mail-archive.com/openocd-development@lists.berlios.de/msg11152.html */
 403                 LOG_DEBUG("command '%s' is already registered in '%s' context",
 404                         name, parent ? parent->name : "<global>");
 405                 return c;
 406         }
 407
 408         c = command_new(context, parent, cr);
 409         if (NULL == c)
 410                 return NULL;
 411
 412         int retval = ERROR_OK;
 413         if (NULL != cr->jim_handler && NULL == parent) {
 414                 retval = Jim_CreateCommand(context->interp, cr->name,
 415                                 cr->jim_handler, cr->jim_handler_data, NULL);
 416         } else if (NULL != cr->handler || NULL != parent)
 417                 retval = register_command_handler(context, command_root(c));
 418
 419         if (ERROR_OK != retval) {
 420                 unregister_command(context, parent, name);
 421                 c = NULL;
 422         }
 423         return c;
 424 }
 425
 426 int register_commands(struct command_context *cmd_ctx, struct command *parent,
 427         const struct command_registration *cmds)
 428 {
 429         int retval = ERROR_OK;
 430         unsigned i;
 431         for (i = 0; cmds[i].name || cmds[i].chain; i++) {
 432                 const struct command_registration *cr = cmds + i;
 433
 434                 struct command *c = NULL;
 435                 if (NULL != cr->name) {
 436                         c = register_command(cmd_ctx, parent, cr);
 437                         if (NULL == c) {
 438                                 retval = ERROR_FAIL;
 439                                 break;
 440                         }
 441                 }
 442                 if (NULL != cr->chain) {
 443                         struct command *p = c ? : parent;
 444                         retval = register_commands(cmd_ctx, p, cr->chain);
 445                         if (ERROR_OK != retval)
 446                                 break;
 447                 }
 448         }
 449         if (ERROR_OK != retval) {
 450                 for (unsigned j = 0; j < i; j++)
 451                         unregister_command(cmd_ctx, parent, cmds[j].name);
 452         }
 453         return retval;
 454 }
 455
 456 int unregister_all_commands(struct command_context *context,
 457         struct command *parent)
 458 {
 459         if (context == NULL)
 460                 return ERROR_OK;
 461
 462         struct command **head = command_list_for_parent(context, parent);
 463         while (NULL != *head) {
 464                 struct command *tmp = *head;
 465                 *head = tmp->next;
 466                 command_free(tmp);
 467         }
 468
 469         return ERROR_OK;
 470 }
 471
 472 int unregister_command(struct command_context *context,
 473         struct command *parent, const char *name)
 474 {
 475         if ((!context) || (!name))
 476                 return ERROR_COMMAND_SYNTAX_ERROR;
 477
 478         struct command *p = NULL;
 479         struct command **head = command_list_for_parent(context, parent);
 480         for (struct command *c = *head; NULL != c; p = c, c = c->next) {
 481                 if (strcmp(name, c->name) != 0)
 482                         continue;
 483
 484                 if (p)
 485                         p->next = c->next;
 486                 else
 487                         *head = c->next;
 488
 489                 command_free(c);
 490                 return ERROR_OK;
 491         }
 492
 493         return ERROR_OK;
 494 }
 495
 496 void command_set_handler_data(struct command *c, void *p)
 497 {
 498         if (NULL != c->handler || NULL != c->jim_handler)
 499                 c->jim_handler_data = p;
 500         for (struct command *cc = c->children; NULL != cc; cc = cc->next)
 501                 command_set_handler_data(cc, p);
 502 }
 503
 504 void command_output_text(struct command_context *context, const char *data)
 505 {
 506         if (context && context->output_handler && data)
 507                 context->output_handler(context, data);
 508 }
 509
 510 void command_print_sameline(struct command_context *context, const char *format, ...)
 511 {
 512         char *string;
 513
 514         va_list ap;
 515         va_start(ap, format);
 516
 517         string = alloc_vprintf(format, ap);
 518         if (string != NULL) {
 519                 /* we want this collected in the log + we also want to pick it up as a tcl return
 520                  * value.
 521                  *
 522                  * The latter bit isn't precisely neat, but will do for now.
 523                  */
 524                 LOG_USER_N("%s", string);
 525                 /* We already printed it above
 526                  * command_output_text(context, string); */
 527                 free(string);
 528         }
 529
 530         va_end(ap);
 531 }
 532
 533 void command_print(struct command_context *context, const char *format, ...)
 534 {
 535         char *string;
 536
 537         va_list ap;
 538         va_start(ap, format);
 539
 540         string = alloc_vprintf(format, ap);
 541         if (string != NULL) {
 542                 strcat(string, "\n");   /* alloc_vprintf guaranteed the buffer to be at least one
 543                                          *char longer */
 544                 /* we want this collected in the log + we also want to pick it up as a tcl return
 545                  * value.
 546                  *
 547                  * The latter bit isn't precisely neat, but will do for now.
 548                  */
 549                 LOG_USER_N("%s", string);
 550                 /* We already printed it above
 551                  * command_output_text(context, string); */
 552                 free(string);
 553         }
 554
 555         va_end(ap);
 556 }
 557
 558 static char *__command_name(struct command *c, char delim, unsigned extra)
 559 {
 560         char *name;
 561         unsigned len = strlen(c->name);
 562         if (NULL == c->parent) {
 563                 /* allocate enough for the name, child names, and '\0' */
 564                 name = malloc(len + extra + 1);
 565                 strcpy(name, c->name);
 566         } else {
 567                 /* parent's extra must include both the space and name */
 568                 name = __command_name(c->parent, delim, 1 + len + extra);
 569                 char dstr[2] = { delim, 0 };
 570                 strcat(name, dstr);
 571                 strcat(name, c->name);
 572         }
 573         return name;
 574 }
 575
 576 char *command_name(struct command *c, char delim)
 577 {
 578         return __command_name(c, delim, 0);
 579 }
 580
 581 static bool command_can_run(struct command_context *cmd_ctx, struct command *c)
 582 {
 583         return c->mode == COMMAND_ANY || c->mode == cmd_ctx->mode;
 584 }
 585
 586 static int run_command(struct command_context *context,
 587         struct command *c, const char *words[], unsigned num_words)
 588 {
 589         if (!command_can_run(context, c)) {
 590                 /* Many commands may be run only before/after 'init' */
 591                 const char *when;
 592                 switch (c->mode) {
 593                         case COMMAND_CONFIG:
 594                                 when = "before";
 595                                 break;
 596                         case COMMAND_EXEC:
 597                                 when = "after";
 598                                 break;
 599                         /* handle the impossible with humor; it guarantees a bug report! */
 600                         default:
 601                                 when = "if Cthulhu is summoned by";
 602                                 break;
 603                 }
 604                 LOG_ERROR("The '%s' command must be used %s 'init'.",
 605                         c->name, when);
 606                 return ERROR_FAIL;
 607         }
 608
 609         struct command_invocation cmd = {
 610                 .ctx = context,
 611                 .current = c,
 612                 .name = c->name,
 613                 .argc = num_words - 1,
 614                 .argv = words + 1,
 615         };
 616         int retval = c->handler(&cmd);
 617         if (retval == ERROR_COMMAND_SYNTAX_ERROR) {
 618                 /* Print help for command */
 619                 char *full_name = command_name(c, ' ');
 620                 if (NULL != full_name) {
 621                         command_run_linef(context, "usage %s", full_name);
 622                         free(full_name);
 623                 } else
 624                         retval = -ENOMEM;
 625         } else if (retval == ERROR_COMMAND_CLOSE_CONNECTION) {
 626                 /* just fall through for a shutdown request */
 627         } else if (retval != ERROR_OK) {
 628                 /* we do not print out an error message because the command *should*
 629                  * have printed out an error
 630                  */
 631                 LOG_DEBUG("Command failed with error code %d", retval);
 632         }
 633
 634         return retval;
 635 }
 636
 637 int command_run_line(struct command_context *context, char *line)
 638 {
 639         /* all the parent commands have been registered with the interpreter
 640          * so, can just evaluate the line as a script and check for
 641          * results
 642          */
 643         /* run the line thru a script engine */
 644         int retval = ERROR_FAIL;
 645         int retcode;
 646         /* Beware! This code needs to be reentrant. It is also possible
 647          * for OpenOCD commands to be invoked directly from Tcl. This would
 648          * happen when the Jim Tcl interpreter is provided by eCos for
 649          * instance.
 650          */
 651         Jim_Interp *interp = context->interp;
 652         Jim_DeleteAssocData(interp, "context");
 653         retcode = Jim_SetAssocData(interp, "context", NULL, context);
 654         if (retcode == JIM_OK) {
 655                 /* associated the return value */
 656                 Jim_DeleteAssocData(interp, "retval");
 657                 retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
 658                 if (retcode == JIM_OK) {
 659                         retcode = Jim_Eval_Named(interp, line, 0, 0);
 660
 661                         Jim_DeleteAssocData(interp, "retval");
 662                 }
 663                 Jim_DeleteAssocData(interp, "context");
 664         }
 665         if (retcode == JIM_ERR) {
 666                 if (retval != ERROR_COMMAND_CLOSE_CONNECTION) {
 667                         /* We do not print the connection closed error message */
 668                         Jim_MakeErrorMessage(interp);
 669                         LOG_USER("%s", Jim_GetString(Jim_GetResult(interp), NULL));
 670                 }
 671                 if (retval == ERROR_OK) {
 672                         /* It wasn't a low level OpenOCD command that failed */
 673                         return ERROR_FAIL;
 674                 }
 675                 return retval;
 676         } else if (retcode == JIM_EXIT) {
 677                 /* ignore.
 678                  * exit(Jim_GetExitCode(interp)); */
 679         } else {
 680                 const char *result;
 681                 int reslen;
 682
 683                 result = Jim_GetString(Jim_GetResult(interp), &reslen);
 684                 if (reslen > 0) {
 685                         int i;
 686                         char buff[256 + 1];
 687                         for (i = 0; i < reslen; i += 256) {
 688                                 int chunk;
 689                                 chunk = reslen - i;
 690                                 if (chunk > 256)
 691                                         chunk = 256;
 692                                 strncpy(buff, result + i, chunk);
 693                                 buff[chunk] = 0;
 694                                 LOG_USER_N("%s", buff);
 695                         }
 696                         LOG_USER_N("\n");
 697                 }
 698                 retval = ERROR_OK;
 699         }
 700         return retval;
 701 }
 702
 703 int command_run_linef(struct command_context *context, const char *format, ...)
 704 {
 705         int retval = ERROR_FAIL;
 706         char *string;
 707         va_list ap;
 708         va_start(ap, format);
 709         string = alloc_vprintf(format, ap);
 710         if (string != NULL) {
 711                 retval = command_run_line(context, string);
 712                 free(string);
 713         }
 714         va_end(ap);
 715         return retval;
 716 }
 717
 718 void command_set_output_handler(struct command_context *context,
 719         command_output_handler_t output_handler, void *priv)
 720 {
 721         context->output_handler = output_handler;
 722         context->output_handler_priv = priv;
 723 }
 724
 725 struct command_context *copy_command_context(struct command_context *context)
 726 {
 727         struct command_context *copy_context = malloc(sizeof(struct command_context));
 728
 729         *copy_context = *context;
 730
 731         return copy_context;
 732 }
 733
 734 void command_done(struct command_context *cmd_ctx)
 735 {
 736         if (NULL == cmd_ctx)
 737                 return;
 738
 739         free(cmd_ctx);
 740 }
 741
 742 /* find full path to file */
 743 static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 744 {
 745         if (argc != 2)
 746                 return JIM_ERR;
 747         const char *file = Jim_GetString(argv[1], NULL);
 748         char *full_path = find_file(file);
 749         if (full_path == NULL)
 750                 return JIM_ERR;
 751         Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
 752         free(full_path);
 753
 754         Jim_SetResult(interp, result);
 755         return JIM_OK;
 756 }
 757
 758 COMMAND_HANDLER(jim_echo)
 759 {
 760         if (CMD_ARGC == 2 && !strcmp(CMD_ARGV[0], "-n")) {
 761                 LOG_USER_N("%s", CMD_ARGV[1]);
 762                 return JIM_OK;
 763         }
 764         if (CMD_ARGC != 1)
 765                 return JIM_ERR;
 766         LOG_USER("%s", CMD_ARGV[0]);
 767         return JIM_OK;
 768 }
 769
 770 /* Capture progress output and return as tcl return value. If the
 771  * progress output was empty, return tcl return value.
 772  */
 773 static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 774 {
 775         if (argc != 2)
 776                 return JIM_ERR;
 777
 778         struct log_capture_state *state = command_log_capture_start(interp);
 779
 780         /* disable polling during capture. This avoids capturing output
 781          * from polling.
 782          *
 783          * This is necessary in order to avoid accidentally getting a non-empty
 784          * string for tcl fn's.
 785          */
 786         bool save_poll = jtag_poll_get_enabled();
 787
 788         jtag_poll_set_enabled(false);
 789
 790         const char *str = Jim_GetString(argv[1], NULL);
 791         int retcode = Jim_Eval_Named(interp, str, __THIS__FILE__, __LINE__);
 792
 793         jtag_poll_set_enabled(save_poll);
 794
 795         command_log_capture_finish(state);
 796
 797         return retcode;
 798 }
 799
 800 static COMMAND_HELPER(command_help_find, struct command *head,
 801         struct command **out)
 802 {
 803         if (0 == CMD_ARGC)
 804                 return ERROR_COMMAND_SYNTAX_ERROR;
 805         *out = command_find(head, CMD_ARGV[0]);
 806         if (NULL == *out && strncmp(CMD_ARGV[0], "ocd_", 4) == 0)
 807                 *out = command_find(head, CMD_ARGV[0] + 4);
 808         if (NULL == *out)
 809                 return ERROR_COMMAND_SYNTAX_ERROR;
 810         if (--CMD_ARGC == 0)
 811                 return ERROR_OK;
 812         CMD_ARGV++;
 813         return CALL_COMMAND_HANDLER(command_help_find, (*out)->children, out);
 814 }
 815
 816 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
 817         bool show_help, const char *match);
 818
 819 static COMMAND_HELPER(command_help_show_list, struct command *head, unsigned n,
 820         bool show_help, const char *match)
 821 {
 822         for (struct command *c = head; NULL != c; c = c->next)
 823                 CALL_COMMAND_HANDLER(command_help_show, c, n, show_help, match);
 824         return ERROR_OK;
 825 }
 826
 827 #define HELP_LINE_WIDTH(_n) (int)(76 - (2 * _n))
 828
 829 static void command_help_show_indent(unsigned n)
 830 {
 831         for (unsigned i = 0; i < n; i++)
 832                 LOG_USER_N("  ");
 833 }
 834 static void command_help_show_wrap(const char *str, unsigned n, unsigned n2)
 835 {
 836         const char *cp = str, *last = str;
 837         while (*cp) {
 838                 const char *next = last;
 839                 do {
 840                         cp = next;
 841                         do {
 842                                 next++;
 843                         } while (*next != ' ' && *next != '\t' && *next != '\0');
 844                 } while ((next - last < HELP_LINE_WIDTH(n)) && *next != '\0');
 845                 if (next - last < HELP_LINE_WIDTH(n))
 846                         cp = next;
 847                 command_help_show_indent(n);
 848                 LOG_USER("%.*s", (int)(cp - last), last);
 849                 last = cp + 1;
 850                 n = n2;
 851         }
 852 }
 853
 854 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
 855         bool show_help, const char *match)
 856 {
 857         char *cmd_name = command_name(c, ' ');
 858         if (NULL == cmd_name)
 859                 return -ENOMEM;
 860
 861         /* If the match string occurs anywhere, we print out
 862          * stuff for this command. */
 863         bool is_match = (strstr(cmd_name, match) != NULL) ||
 864                 ((c->usage != NULL) && (strstr(c->usage, match) != NULL)) ||
 865                 ((c->help != NULL) && (strstr(c->help, match) != NULL));
 866
 867         if (is_match) {
 868                 command_help_show_indent(n);
 869                 LOG_USER_N("%s", cmd_name);
 870         }
 871         free(cmd_name);
 872
 873         if (is_match) {
 874                 if (c->usage) {
 875                         LOG_USER_N(" ");
 876                         command_help_show_wrap(c->usage, 0, n + 5);
 877                 } else
 878                         LOG_USER_N("\n");
 879         }
 880
 881         if (is_match && show_help) {
 882                 char *msg;
 883
 884                 /* Normal commands are runtime-only; highlight exceptions */
 885                 if (c->mode != COMMAND_EXEC) {
 886                         const char *stage_msg = "";
 887
 888                         switch (c->mode) {
 889                                 case COMMAND_CONFIG:
 890                                         stage_msg = " (configuration command)";
 891                                         break;
 892                                 case COMMAND_ANY:
 893                                         stage_msg = " (command valid any time)";
 894                                         break;
 895                                 default:
 896                                         stage_msg = " (?mode error?)";
 897                                         break;
 898                         }
 899                         msg = alloc_printf("%s%s", c->help ? : "", stage_msg);
 900                 } else
 901                         msg = alloc_printf("%s", c->help ? : "");
 902
 903                 if (NULL != msg) {
 904                         command_help_show_wrap(msg, n + 3, n + 3);
 905                         free(msg);
 906                 } else
 907                         return -ENOMEM;
 908         }
 909
 910         if (++n > 5) {
 911                 LOG_ERROR("command recursion exceeded");
 912                 return ERROR_FAIL;
 913         }
 914
 915         return CALL_COMMAND_HANDLER(command_help_show_list,
 916                 c->children, n, show_help, match);
 917 }
 918
 919 COMMAND_HANDLER(handle_help_command)
 920 {
 921         bool full = strcmp(CMD_NAME, "help") == 0;
 922         int retval;
 923         struct command *c = CMD_CTX->commands;
 924         char *match = NULL;
 925
 926         if (CMD_ARGC == 0)
 927                 match = "";
 928         else if (CMD_ARGC >= 1) {
 929                 unsigned i;
 930
 931                 for (i = 0; i < CMD_ARGC; ++i) {
 932                         if (NULL != match) {
 933                                 char *prev = match;
 934
 935                                 match = alloc_printf("%s %s", match, CMD_ARGV[i]);
 936                                 free(prev);
 937                                 if (NULL == match) {
 938                                         LOG_ERROR("unable to build search string");
 939                                         return -ENOMEM;
 940                                 }
 941                         } else {
 942                                 match = alloc_printf("%s", CMD_ARGV[i]);
 943                                 if (NULL == match) {
 944                                         LOG_ERROR("unable to build search string");
 945                                         return -ENOMEM;
 946                                 }
 947                         }
 948                 }
 949         } else
 950                 return ERROR_COMMAND_SYNTAX_ERROR;
 951
 952         retval = CALL_COMMAND_HANDLER(command_help_show_list,
 953                         c, 0, full, match);
 954
 955         if (CMD_ARGC >= 1)
 956                 free(match);
 957         return retval;
 958 }
 959
 960 static int command_unknown_find(unsigned argc, Jim_Obj *const *argv,
 961         struct command *head, struct command **out, bool top_level)
 962 {
 963         if (0 == argc)
 964                 return argc;
 965         const char *cmd_name = Jim_GetString(argv[0], NULL);
 966         struct command *c = command_find(head, cmd_name);
 967         if (NULL == c && top_level && strncmp(cmd_name, "ocd_", 4) == 0)
 968                 c = command_find(head, cmd_name + 4);
 969         if (NULL == c)
 970                 return argc;
 971         *out = c;
 972         return command_unknown_find(--argc, ++argv, (*out)->children, out, false);
 973 }
 974
 975 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 976 {
 977         const char *cmd_name = Jim_GetString(argv[0], NULL);
 978         if (strcmp(cmd_name, "unknown") == 0) {
 979                 if (argc == 1)
 980                         return JIM_OK;
 981                 argc--;
 982                 argv++;
 983         }
 984         script_debug(interp, cmd_name, argc, argv);
 985
 986         struct command_context *cmd_ctx = current_command_context(interp);
 987         struct command *c = cmd_ctx->commands;
 988         int remaining = command_unknown_find(argc, argv, c, &c, true);
 989         /* if nothing could be consumed, then it's really an unknown command */
 990         if (remaining == argc) {
 991                 const char *cmd = Jim_GetString(argv[0], NULL);
 992                 LOG_ERROR("Unknown command:\n  %s", cmd);
 993                 return JIM_OK;
 994         }
 995
 996         bool found = true;
 997         Jim_Obj *const *start;
 998         unsigned count;
 999         if (c->handler || c->jim_handler) {
1000                 /* include the command name in the list */
1001                 count = remaining + 1;
1002                 start = argv + (argc - remaining - 1);
1003         } else {
1004                 c = command_find(cmd_ctx->commands, "usage");
1005                 if (NULL == c) {
1006                         LOG_ERROR("unknown command, but usage is missing too");
1007                         return JIM_ERR;
1008                 }
1009                 count = argc - remaining;
1010                 start = argv;
1011                 found = false;
1012         }
1013         /* pass the command through to the intended handler */
1014         if (c->jim_handler) {
1015                 interp->cmdPrivData = c->jim_handler_data;
1016                 return (*c->jim_handler)(interp, count, start);
1017         }
1018
1019         return script_command_run(interp, count, start, c, found);
1020 }
1021
1022 static int jim_command_mode(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1023 {
1024         struct command_context *cmd_ctx = current_command_context(interp);
1025         enum command_mode mode;
1026
1027         if (argc > 1) {
1028                 struct command *c = cmd_ctx->commands;
1029                 int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1030                 /* if nothing could be consumed, then it's an unknown command */
1031                 if (remaining == argc - 1) {
1032                         Jim_SetResultString(interp, "unknown", -1);
1033                         return JIM_OK;
1034                 }
1035                 mode = c->mode;
1036         } else
1037                 mode = cmd_ctx->mode;
1038
1039         const char *mode_str;
1040         switch (mode) {
1041                 case COMMAND_ANY:
1042                         mode_str = "any";
1043                         break;
1044                 case COMMAND_CONFIG:
1045                         mode_str = "config";
1046                         break;
1047                 case COMMAND_EXEC:
1048                         mode_str = "exec";
1049                         break;
1050                 default:
1051                         mode_str = "unknown";
1052                         break;
1053         }
1054         Jim_SetResultString(interp, mode_str, -1);
1055         return JIM_OK;
1056 }
1057
1058 static int jim_command_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1059 {
1060         if (1 == argc)
1061                 return JIM_ERR;
1062
1063         struct command_context *cmd_ctx = current_command_context(interp);
1064         struct command *c = cmd_ctx->commands;
1065         int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1066         /* if nothing could be consumed, then it's an unknown command */
1067         if (remaining == argc - 1) {
1068                 Jim_SetResultString(interp, "unknown", -1);
1069                 return JIM_OK;
1070         }
1071
1072         if (c->jim_handler)
1073                 Jim_SetResultString(interp, "native", -1);
1074         else if (c->handler)
1075                 Jim_SetResultString(interp, "simple", -1);
1076         else
1077                 Jim_SetResultString(interp, "group", -1);
1078
1079         return JIM_OK;
1080 }
1081
1082 int help_add_command(struct command_context *cmd_ctx, struct command *parent,
1083         const char *cmd_name, const char *help_text, const char *usage)
1084 {
1085         struct command **head = command_list_for_parent(cmd_ctx, parent);
1086         struct command *nc = command_find(*head, cmd_name);
1087         if (NULL == nc) {
1088                 /* add a new command with help text */
1089                 struct command_registration cr = {
1090                         .name = cmd_name,
1091                         .mode = COMMAND_ANY,
1092                         .help = help_text,
1093                         .usage = usage,
1094                 };
1095                 nc = register_command(cmd_ctx, parent, &cr);
1096                 if (NULL == nc) {
1097                         LOG_ERROR("failed to add '%s' help text", cmd_name);
1098                         return ERROR_FAIL;
1099                 }
1100                 LOG_DEBUG("added '%s' help text", cmd_name);
1101                 return ERROR_OK;
1102         }
1103         if (help_text) {
1104                 bool replaced = false;
1105                 if (nc->help) {
1106                         free((void *)nc->help);
1107                         replaced = true;
1108                 }
1109                 nc->help = strdup(help_text);
1110                 if (replaced)
1111                         LOG_INFO("replaced existing '%s' help", cmd_name);
1112                 else
1113                         LOG_DEBUG("added '%s' help text", cmd_name);
1114         }
1115         if (usage) {
1116                 bool replaced = false;
1117                 if (nc->usage) {
1118                         free((void *)nc->usage);
1119                         replaced = true;
1120                 }
1121                 nc->usage = strdup(usage);
1122                 if (replaced)
1123                         LOG_INFO("replaced existing '%s' usage", cmd_name);
1124                 else
1125                         LOG_DEBUG("added '%s' usage text", cmd_name);
1126         }
1127         return ERROR_OK;
1128 }
1129
1130 COMMAND_HANDLER(handle_help_add_command)
1131 {
1132         if (CMD_ARGC < 2) {
1133                 LOG_ERROR("%s: insufficient arguments", CMD_NAME);
1134                 return ERROR_COMMAND_SYNTAX_ERROR;
1135         }
1136
1137         /* save help text and remove it from argument list */
1138         const char *str = CMD_ARGV[--CMD_ARGC];
1139         const char *help = !strcmp(CMD_NAME, "add_help_text") ? str : NULL;
1140         const char *usage = !strcmp(CMD_NAME, "add_usage_text") ? str : NULL;
1141         if (!help && !usage) {
1142                 LOG_ERROR("command name '%s' is unknown", CMD_NAME);
1143                 return ERROR_COMMAND_SYNTAX_ERROR;
1144         }
1145         /* likewise for the leaf command name */
1146         const char *cmd_name = CMD_ARGV[--CMD_ARGC];
1147
1148         struct command *c = NULL;
1149         if (CMD_ARGC > 0) {
1150                 c = CMD_CTX->commands;
1151                 int retval = CALL_COMMAND_HANDLER(command_help_find, c, &c);
1152                 if (ERROR_OK != retval)
1153                         return retval;
1154         }
1155         return help_add_command(CMD_CTX, c, cmd_name, help, usage);
1156 }
1157
1158 /* sleep command sleeps for <n> milliseconds
1159  * this is useful in target startup scripts
1160  */
1161 COMMAND_HANDLER(handle_sleep_command)
1162 {
1163         bool busy = false;
1164         if (CMD_ARGC == 2) {
1165                 if (strcmp(CMD_ARGV[1], "busy") == 0)
1166                         busy = true;
1167                 else
1168                         return ERROR_COMMAND_SYNTAX_ERROR;
1169         } else if (CMD_ARGC < 1 || CMD_ARGC > 2)
1170                 return ERROR_COMMAND_SYNTAX_ERROR;
1171
1172         unsigned long duration = 0;
1173         int retval = parse_ulong(CMD_ARGV[0], &duration);
1174         if (ERROR_OK != retval)
1175                 return retval;
1176
1177         if (!busy) {
1178                 long long then = timeval_ms();
1179                 while (timeval_ms() - then < (long long)duration) {
1180                         target_call_timer_callbacks_now();
1181                         usleep(1000);
1182                 }
1183         } else
1184                 busy_sleep(duration);
1185
1186         return ERROR_OK;
1187 }
1188
1189 static const struct command_registration command_subcommand_handlers[] = {
1190         {
1191                 .name = "mode",
1192                 .mode = COMMAND_ANY,
1193                 .jim_handler = jim_command_mode,
1194                 .usage = "[command_name ...]",
1195                 .help = "Returns the command modes allowed by a  command:"
1196                         "'any', 'config', or 'exec'.  If no command is"
1197                         "specified, returns the current command mode.  "
1198                         "Returns 'unknown' if an unknown command is given. "
1199                         "Command can be multiple tokens.",
1200         },
1201         {
1202                 .name = "type",
1203                 .mode = COMMAND_ANY,
1204                 .jim_handler = jim_command_type,
1205                 .usage = "command_name [...]",
1206                 .help = "Returns the type of built-in command:"
1207                         "'native', 'simple', 'group', or 'unknown'. "
1208                         "Command can be multiple tokens.",
1209         },
1210         COMMAND_REGISTRATION_DONE
1211 };
1212
1213 static const struct command_registration command_builtin_handlers[] = {
1214         {
1215                 .name = "echo",
1216                 .handler = jim_echo,
1217                 .mode = COMMAND_ANY,
1218                 .help = "Logs a message at \"user\" priority. "
1219                         "Output message to stdout. "
1220                         "Option \"-n\" suppresses trailing newline",
1221                 .usage = "[-n] string",
1222         },
1223         {
1224                 .name = "add_help_text",
1225                 .handler = handle_help_add_command,
1226                 .mode = COMMAND_ANY,
1227                 .help = "Add new command help text; "
1228                         "Command can be multiple tokens.",
1229                 .usage = "command_name helptext_string",
1230         },
1231         {
1232                 .name = "add_usage_text",
1233                 .handler = handle_help_add_command,
1234                 .mode = COMMAND_ANY,
1235                 .help = "Add new command usage text; "
1236                         "command can be multiple tokens.",
1237                 .usage = "command_name usage_string",
1238         },
1239         {
1240                 .name = "sleep",
1241                 .handler = handle_sleep_command,
1242                 .mode = COMMAND_ANY,
1243                 .help = "Sleep for specified number of milliseconds.  "
1244                         "\"busy\" will busy wait instead (avoid this).",
1245                 .usage = "milliseconds ['busy']",
1246         },
1247         {
1248                 .name = "help",
1249                 .handler = handle_help_command,
1250                 .mode = COMMAND_ANY,
1251                 .help = "Show full command help; "
1252                         "command can be multiple tokens.",
1253                 .usage = "[command_name]",
1254         },
1255         {
1256                 .name = "usage",
1257                 .handler = handle_help_command,
1258                 .mode = COMMAND_ANY,
1259                 .help = "Show basic command usage; "
1260                         "command can be multiple tokens.",
1261                 .usage = "[command_name]",
1262         },
1263         {
1264                 .name = "command",
1265                 .mode = COMMAND_ANY,
1266                 .help = "core command group (introspection)",
1267                 .chain = command_subcommand_handlers,
1268         },
1269         COMMAND_REGISTRATION_DONE
1270 };
1271
1272 struct command_context *command_init(const char *startup_tcl, Jim_Interp *interp)
1273 {
1274         struct command_context *context = malloc(sizeof(struct command_context));
1275         const char *HostOs;
1276
1277         context->mode = COMMAND_EXEC;
1278         context->commands = NULL;
1279         context->current_target = 0;
1280         context->output_handler = NULL;
1281         context->output_handler_priv = NULL;
1282
1283         /* Create a jim interpreter if we were not handed one */
1284         if (interp == NULL) {
1285                 /* Create an interpreter */
1286                 interp = Jim_CreateInterp();
1287                 /* Add all the Jim core commands */
1288                 Jim_RegisterCoreCommands(interp);
1289                 Jim_InitStaticExtensions(interp);
1290         }
1291
1292         context->interp = interp;
1293
1294         /* Stick to lowercase for HostOS strings. */
1295 #if defined(_MSC_VER)
1296         /* WinXX - is generic, the forward
1297          * looking problem is this:
1298          *
1299          *   "win32" or "win64"
1300          *
1301          * "winxx" is generic.
1302          */
1303         HostOs = "winxx";
1304 #elif defined(__linux__)
1305         HostOs = "linux";
1306 #elif defined(__APPLE__) || defined(__DARWIN__)
1307         HostOs = "darwin";
1308 #elif defined(__CYGWIN__)
1309         HostOs = "cygwin";
1310 #elif defined(__MINGW32__)
1311         HostOs = "mingw32";
1312 #elif defined(__ECOS)
1313         HostOs = "ecos";
1314 #elif defined(__FreeBSD__)
1315         HostOs = "freebsd";
1316 #elif defined(__NetBSD__)
1317         HostOs = "netbsd";
1318 #elif defined(__OpenBSD__)
1319         HostOs = "openbsd";
1320 #else
1321 #warning "Unrecognized host OS..."
1322         HostOs = "other";
1323 #endif
1324         Jim_SetGlobalVariableStr(interp, "ocd_HOSTOS",
1325                 Jim_NewStringObj(interp, HostOs, strlen(HostOs)));
1326
1327         Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
1328         Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
1329
1330         register_commands(context, NULL, command_builtin_handlers);
1331
1332         Jim_SetAssocData(interp, "context", NULL, context);
1333         if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl", 1) == JIM_ERR) {
1334                 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
1335                 Jim_MakeErrorMessage(interp);
1336                 LOG_USER_N("%s", Jim_GetString(Jim_GetResult(interp), NULL));
1337                 exit(-1);
1338         }
1339         Jim_DeleteAssocData(interp, "context");
1340
1341         return context;
1342 }
1343
1344 int command_context_mode(struct command_context *cmd_ctx, enum command_mode mode)
1345 {
1346         if (!cmd_ctx)
1347                 return ERROR_COMMAND_SYNTAX_ERROR;
1348
1349         cmd_ctx->mode = mode;
1350         return ERROR_OK;
1351 }
1352
1353 void process_jim_events(struct command_context *cmd_ctx)
1354 {
1355         static int recursion;
1356         if (recursion)
1357                 return;
1358
1359         recursion++;
1360         Jim_ProcessEvents(cmd_ctx->interp, JIM_ALL_EVENTS | JIM_DONT_WAIT);
1361         recursion--;
1362 }
1363
1364 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
1365         int parse ## name(const char *str, type * ul) \
1366         { \
1367                 if (!*str) { \
1368                         LOG_ERROR("Invalid command argument"); \
1369                         return ERROR_COMMAND_ARGUMENT_INVALID; \
1370                 } \
1371                 char *end; \
1372                 *ul = func(str, &end, 0); \
1373                 if (*end) { \
1374                         LOG_ERROR("Invalid command argument"); \
1375                         return ERROR_COMMAND_ARGUMENT_INVALID; \
1376                 } \
1377                 if ((max == *ul) && (ERANGE == errno)) { \
1378                         LOG_ERROR("Argument overflow"); \
1379                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1380                 } \
1381                 if (min && (min == *ul) && (ERANGE == errno)) { \
1382                         LOG_ERROR("Argument underflow"); \
1383                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1384                 } \
1385                 return ERROR_OK; \
1386         }
1387 DEFINE_PARSE_NUM_TYPE(_ulong, unsigned long, strtoul, 0, ULONG_MAX)
1388 DEFINE_PARSE_NUM_TYPE(_ullong, unsigned long long, strtoull, 0, ULLONG_MAX)
1389 DEFINE_PARSE_NUM_TYPE(_long, long, strtol, LONG_MIN, LONG_MAX)
1390 DEFINE_PARSE_NUM_TYPE(_llong, long long, strtoll, LLONG_MIN, LLONG_MAX)
1391
1392 #define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
1393         int parse ## name(const char *str, type * ul) \
1394         { \
1395                 functype n; \
1396                 int retval = parse ## funcname(str, &n); \
1397                 if (ERROR_OK != retval) \
1398                         return retval; \
1399                 if (n > max) \
1400                         return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1401                 if (min) \
1402                         return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1403                 *ul = n; \
1404                 return ERROR_OK; \
1405         }
1406
1407 #define DEFINE_PARSE_ULONG(name, type, min, max) \
1408         DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long, _ulong)
1409 DEFINE_PARSE_ULONG(_uint, unsigned, 0, UINT_MAX)
1410 DEFINE_PARSE_ULONG(_u32, uint32_t, 0, UINT32_MAX)
1411 DEFINE_PARSE_ULONG(_u16, uint16_t, 0, UINT16_MAX)
1412 DEFINE_PARSE_ULONG(_u8, uint8_t, 0, UINT8_MAX)
1413
1414 #define DEFINE_PARSE_LONG(name, type, min, max) \
1415         DEFINE_PARSE_WRAPPER(name, type, min, max, long, _long)
1416 DEFINE_PARSE_LONG(_int, int, n < INT_MIN, INT_MAX)
1417 DEFINE_PARSE_LONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
1418 DEFINE_PARSE_LONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
1419 DEFINE_PARSE_LONG(_s8, int8_t, n < INT8_MIN, INT8_MAX)
1420
1421 static int command_parse_bool(const char *in, bool *out,
1422         const char *on, const char *off)
1423 {
1424         if (strcasecmp(in, on) == 0)
1425                 *out = true;
1426         else if (strcasecmp(in, off) == 0)
1427                 *out = false;
1428         else
1429                 return ERROR_COMMAND_SYNTAX_ERROR;
1430         return ERROR_OK;
1431 }
1432
1433 int command_parse_bool_arg(const char *in, bool *out)
1434 {
1435         if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
1436                 return ERROR_OK;
1437         if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
1438                 return ERROR_OK;
1439         if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
1440                 return ERROR_OK;
1441         if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
1442                 return ERROR_OK;
1443         if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
1444                 return ERROR_OK;
1445         return ERROR_COMMAND_SYNTAX_ERROR;
1446 }
1447
1448 COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
1449 {
1450         switch (CMD_ARGC) {
1451                 case 1: {
1452                         const char *in = CMD_ARGV[0];
1453                         if (command_parse_bool_arg(in, out) != ERROR_OK) {
1454                                 LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
1455                                 return ERROR_COMMAND_SYNTAX_ERROR;
1456                         }
1457                         /* fall through */
1458                 }
1459                 case 0:
1460                         LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
1461                         break;
1462                 default:
1463                         return ERROR_COMMAND_SYNTAX_ERROR;
1464         }
1465         return ERROR_OK;
1466 }