src/helper/ioutil.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2008 by Øyvind Harboe                              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19
  20 /* this file contains various functionality useful to standalone systems */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include "log.h"
  27 #include "time_support.h"
  28
  29 #ifdef HAVE_ARPA_INET_H
  30 #include <arpa/inet.h>
  31 #endif
  32 #ifdef HAVE_DIRENT_H
  33 #include <dirent.h>
  34 #endif
  35 #ifdef HAVE_NETDB_H
  36 #include <netdb.h>
  37 #endif
  38 #ifdef HAVE_NET_IF_H
  39 #include <net/if.h>
  40 #endif
  41 //#ifdef HAVE_NETINET_TCP_H
  42 //#include <netinet/tcp.h>
  43 //#endif
  44 #ifdef HAVE_SYS_IOCTL_H
  45 #include <sys/ioctl.h>
  46 #endif
  47 #ifdef HAVE_SYS_STAT_H
  48 #include <sys/stat.h>
  49 #endif
  50 #ifdef HAVE_IFADDRS_H
  51 #include <ifaddrs.h>
  52 #endif
  53 #ifdef HAVE_MALLOC_H
  54 #if !BUILD_ECOSBOARD
  55 #include <malloc.h>
  56 #endif
  57 #endif
  58 //#ifdef HAVE_STRINGS_H
  59 //#include <strings.h>
  60 //#endif
  61
  62
  63 int handle_rm_command(struct command_context_s *cmd_ctx, char *cmd,
  64                 char **args, int argc)
  65 {
  66         if (argc != 1)
  67         {
  68                 command_print(cmd_ctx, "rm <filename>");
  69                 return ERROR_INVALID_ARGUMENTS;
  70         }
  71
  72         if (unlink(args[0]) != 0)
  73         {
  74                 command_print(cmd_ctx, "failed: %d", errno);
  75         }
  76
  77         return ERROR_OK;
  78 }
  79
  80
  81 /* loads a file and returns a pointer to it in memory. The file contains
  82  * a 0 byte(sentinel) after len bytes - the length of the file. */
  83 int loadFile(const char *fileName, void **data, size_t *len)
  84 {
  85         // ensure returned length is always sane
  86         *len = 0;
  87
  88         FILE * pFile;
  89         pFile = fopen(fileName,"rb");
  90         if (pFile==NULL)
  91         {
  92                 LOG_ERROR("Can't open %s\n", fileName);
  93                 return ERROR_FAIL;
  94         }
  95         if (fseek(pFile, 0, SEEK_END)!=0)
  96         {
  97                 LOG_ERROR("Can't open %s\n", fileName);
  98                 fclose(pFile);
  99                 return ERROR_FAIL;
 100         }
 101         long fsize = ftell(pFile);
 102         if (fsize == -1)
 103         {
 104                 LOG_ERROR("Can't open %s\n", fileName);
 105                 fclose(pFile);
 106                 return ERROR_FAIL;
 107         }
 108         *len = fsize;
 109
 110         if (fseek(pFile, 0, SEEK_SET)!=0)
 111         {
 112                 LOG_ERROR("Can't open %s\n", fileName);
 113                 fclose(pFile);
 114                 return ERROR_FAIL;
 115         }
 116         *data = malloc(*len + 1);
 117         if (*data==NULL)
 118         {
 119                 LOG_ERROR("Can't open %s\n", fileName);
 120                 fclose(pFile);
 121                 return ERROR_FAIL;
 122         }
 123
 124         if (fread(*data, 1, *len, pFile)!=*len)
 125         {
 126                 fclose(pFile);
 127                 free(*data);
 128                 LOG_ERROR("Can't open %s\n", fileName);
 129                 return ERROR_FAIL;
 130         }
 131         fclose(pFile);
 132
 133         // 0-byte after buffer (not included in *len) serves as a sentinel
 134         char *buf = (char *)*data;
 135         buf[*len] = 0;
 136
 137         return ERROR_OK;
 138 }
 139
 140
 141
 142 int handle_cat_command(struct command_context_s *cmd_ctx, char *cmd,
 143                 char **args, int argc)
 144 {
 145         if (argc != 1)
 146         {
 147                 command_print(cmd_ctx, "cat <filename>");
 148                 return ERROR_INVALID_ARGUMENTS;
 149         }
 150
 151         // NOTE!!! we only have line printing capability so we print the entire file as a single line.
 152         void *data;
 153         size_t len;
 154
 155         int retval = loadFile(args[0], &data, &len);
 156         if (retval == ERROR_OK)
 157         {
 158                 command_print(cmd_ctx, "%s", (char *)data);
 159                 free(data);
 160         }
 161         else
 162         {
 163                 command_print(cmd_ctx, "%s not found %d", args[0], retval);
 164         }
 165
 166         return ERROR_OK;
 167 }
 168 int handle_trunc_command(struct command_context_s *cmd_ctx, char *cmd,
 169                 char **args, int argc)
 170 {
 171         if (argc != 1)
 172         {
 173                 command_print(cmd_ctx, "trunc <filename>");
 174                 return ERROR_INVALID_ARGUMENTS;
 175         }
 176
 177         FILE *config_file = NULL;
 178         config_file = fopen(args[0], "w");
 179         if (config_file != NULL)
 180                 fclose(config_file);
 181
 182         return ERROR_OK;
 183 }
 184
 185
 186 int handle_meminfo_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 187 {
 188         static int prev = 0;
 189         struct mallinfo info;
 190
 191         if (argc != 0)
 192         {
 193                 command_print(cmd_ctx, "meminfo");
 194                 return ERROR_INVALID_ARGUMENTS;
 195         }
 196
 197         info = mallinfo();
 198
 199         if (prev > 0)
 200         {
 201                 command_print(cmd_ctx, "Diff:            %d", prev - info.fordblks);
 202         }
 203         prev = info.fordblks;
 204
 205         command_print(cmd_ctx, "Available ram:   %d", info.fordblks );
 206
 207         return ERROR_OK;
 208 }
 209
 210
 211 int handle_append_command(struct command_context_s *cmd_ctx, char *cmd,
 212                 char **args, int argc)
 213 {
 214         if (argc < 1)
 215         {
 216                 command_print(cmd_ctx,
 217                                 "append <filename> [<string1>, [<string2>, ...]]");
 218                 return ERROR_INVALID_ARGUMENTS;
 219         }
 220
 221         int retval=ERROR_FAIL;
 222         FILE *config_file = NULL;
 223         config_file = fopen(args[0], "a");
 224         if (config_file != NULL)
 225         {
 226                 int i;
 227                 fseek(config_file, 0, SEEK_END);
 228
 229                 for (i = 1; i < argc; i++)
 230                 {
 231                         if (fwrite(args[i], strlen(args[i]), 1, config_file)!=strlen(args[i]))
 232                                 break;
 233                         if (i != argc - 1)
 234                         {
 235                                 if (fwrite(" ", 1, 1, config_file)!=1)
 236                                         break;
 237                         }
 238                 }
 239                 if ((i==argc)&&(fwrite("\n", 1, 1, config_file)==1))
 240                 {
 241                         retval=ERROR_OK;
 242                 }
 243                 fclose(config_file);
 244         }
 245
 246         return retval;
 247 }
 248
 249
 250
 251 int handle_cp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 252 {
 253         if (argc != 2)
 254         {
 255                 return ERROR_INVALID_ARGUMENTS;
 256         }
 257
 258         // NOTE!!! we only have line printing capability so we print the entire file as a single line.
 259         void *data;
 260         size_t len;
 261
 262         int retval = loadFile(args[0], &data, &len);
 263         if (retval != ERROR_OK)
 264                 return retval;
 265
 266         FILE *f = fopen(args[1], "wb");
 267         if (f == NULL)
 268                 retval = ERROR_INVALID_ARGUMENTS;
 269
 270         size_t pos = 0;
 271         for (;;)
 272         {
 273                 size_t chunk = len - pos;
 274                 static const size_t maxChunk = 512 * 1024; // ~1/sec
 275                 if (chunk > maxChunk)
 276                 {
 277                         chunk = maxChunk;
 278                 }
 279
 280                 if ((retval==ERROR_OK)&&(fwrite(((char *)data)+pos, 1, chunk, f)!=chunk))
 281                         retval = ERROR_INVALID_ARGUMENTS;
 282
 283                 if (retval != ERROR_OK)
 284                 {
 285                         break;
 286                 }
 287
 288                 command_print(cmd_ctx, "%d", len - pos);
 289
 290                 pos += chunk;
 291
 292                 if (pos == len)
 293                         break;
 294         }
 295
 296         if (retval == ERROR_OK)
 297         {
 298                 command_print(cmd_ctx, "Copied %s to %s", args[0], args[1]);
 299         } else
 300         {
 301                 command_print(cmd_ctx, "Failed: %d", retval);
 302         }
 303
 304         if (data != NULL)
 305                 free(data);
 306         if (f != NULL)
 307                 fclose(f);
 308
 309         if (retval != ERROR_OK)
 310                 unlink(args[1]);
 311
 312         return retval;
 313 }
 314
 315
 316
 317
 318 #define SHOW_RESULT(a, b) LOG_ERROR(#a " failed %d\n", (int)b)
 319
 320 #define IOSIZE 512
 321 void copyfile(char *name2, char *name1)
 322 {
 323
 324         int err;
 325         char buf[IOSIZE];
 326         int fd1, fd2;
 327         ssize_t done, wrote;
 328
 329         fd1 = open(name1, O_WRONLY | O_CREAT);
 330         if (fd1 < 0)
 331                 SHOW_RESULT( open, fd1 );
 332
 333         fd2 = open(name2, O_RDONLY);
 334         if (fd2 < 0)
 335                 SHOW_RESULT( open, fd2 );
 336
 337         for (;;)
 338         {
 339                 done = read(fd2, buf, IOSIZE );
 340                 if (done < 0)
 341                 {
 342                         SHOW_RESULT( read, done );
 343                         break;
 344                 }
 345
 346         if( done == 0 ) break;
 347
 348                 wrote = write(fd1, buf, done);
 349         if( wrote != done ) SHOW_RESULT( write, wrote );
 350
 351         if( wrote != done ) break;
 352         }
 353
 354         err = close(fd1);
 355     if( err < 0 ) SHOW_RESULT( close, err );
 356
 357         err = close(fd2);
 358     if( err < 0 ) SHOW_RESULT( close, err );
 359
 360 }
 361
 362 /* utility fn to copy a directory */
 363 void copydir(char *name, char *destdir)
 364 {
 365         int err;
 366         DIR *dirp;
 367
 368         dirp = opendir(destdir);
 369         if (dirp==NULL)
 370         {
 371                 mkdir(destdir, 0777);
 372         } else
 373         {
 374                 err = closedir(dirp);
 375         }
 376
 377         dirp = opendir(name);
 378     if( dirp == NULL ) SHOW_RESULT( opendir, -1 );
 379
 380         for (;;)
 381         {
 382                 struct dirent *entry = readdir(dirp);
 383
 384                 if (entry == NULL)
 385                         break;
 386
 387                 if (strcmp(entry->d_name, ".") == 0)
 388                         continue;
 389                 if (strcmp(entry->d_name, "..") == 0)
 390                         continue;
 391
 392                 int isDir = 0;
 393                 struct stat buf;
 394                 char fullPath[PATH_MAX];
 395                 strncpy(fullPath, name, PATH_MAX);
 396                 strcat(fullPath, "/");
 397                 strncat(fullPath, entry->d_name, PATH_MAX - strlen(fullPath));
 398
 399                 if (stat(fullPath, &buf) == -1)
 400                 {
 401                         LOG_ERROR("unable to read status from %s", fullPath);
 402                         break;
 403                 }
 404                 isDir = S_ISDIR(buf.st_mode) != 0;
 405
 406                 if (isDir)
 407                         continue;
 408
 409                 //        diag_printf("<INFO>: entry %14s",entry->d_name);
 410                 char fullname[PATH_MAX];
 411                 char fullname2[PATH_MAX];
 412
 413                 strcpy(fullname, name);
 414                 strcat(fullname, "/");
 415                 strcat(fullname, entry->d_name);
 416
 417                 strcpy(fullname2, destdir);
 418                 strcat(fullname2, "/");
 419                 strcat(fullname2, entry->d_name);
 420                 //        diag_printf("from %s to %s\n", fullname, fullname2);
 421                 copyfile(fullname, fullname2);
 422
 423                 //       diag_printf("\n");
 424         }
 425
 426         err = closedir(dirp);
 427     if( err < 0 ) SHOW_RESULT( stat, err );
 428 }
 429
 430
 431
 432
 433 static int
 434 zylinjtag_Jim_Command_rm(Jim_Interp *interp,
 435                                    int argc,
 436                 Jim_Obj * const *argv)
 437 {
 438         int del;
 439         if (argc != 2)
 440         {
 441                 Jim_WrongNumArgs(interp, 1, argv, "rm ?dirorfile?");
 442                 return JIM_ERR;
 443         }
 444
 445         del = 0;
 446         if (unlink(Jim_GetString(argv[1], NULL)) == 0)
 447                 del = 1;
 448         if (rmdir(Jim_GetString(argv[1], NULL)) == 0)
 449                 del = 1;
 450
 451         return del ? JIM_OK : JIM_ERR;
 452 }
 453
 454
 455 static int
 456 zylinjtag_Jim_Command_ls(Jim_Interp *interp,
 457                                    int argc,
 458                 Jim_Obj * const *argv)
 459 {
 460         if (argc != 2)
 461         {
 462                 Jim_WrongNumArgs(interp, 1, argv, "ls ?dir?");
 463                 return JIM_ERR;
 464         }
 465
 466         char *name = (char*) Jim_GetString(argv[1], NULL);
 467
 468         DIR *dirp = NULL;
 469         dirp = opendir(name);
 470         if (dirp == NULL)
 471         {
 472                 return JIM_ERR;
 473         }
 474         Jim_Obj *objPtr = Jim_NewListObj(interp, NULL, 0);
 475
 476         for (;;)
 477         {
 478                 struct dirent *entry = NULL;
 479                 entry = readdir(dirp);
 480                 if (entry == NULL)
 481                         break;
 482
 483                 if ((strcmp(".", entry->d_name)==0)||(strcmp("..", entry->d_name)==0))
 484                         continue;
 485
 486         Jim_ListAppendElement(interp, objPtr, Jim_NewStringObj(interp, entry->d_name, strlen(entry->d_name)));
 487         }
 488         closedir(dirp);
 489
 490         Jim_SetResult(interp, objPtr);
 491
 492         return JIM_OK;
 493 }
 494
 495 static int
 496 zylinjtag_Jim_Command_peek(Jim_Interp *interp,
 497                                    int argc,
 498                 Jim_Obj * const *argv)
 499 {
 500         if (argc != 2)
 501         {
 502                 Jim_WrongNumArgs(interp, 1, argv, "peek ?address?");
 503                 return JIM_ERR;
 504         }
 505
 506         long address;
 507         if (Jim_GetLong(interp, argv[1], &address) != JIM_OK)
 508                 return JIM_ERR;
 509
 510         int value = *((volatile int *) address);
 511
 512         Jim_SetResult(interp, Jim_NewIntObj(interp, value));
 513
 514         return JIM_OK;
 515 }
 516
 517 static int
 518 zylinjtag_Jim_Command_poke(Jim_Interp *interp,
 519                                    int argc,
 520                 Jim_Obj * const *argv)
 521 {
 522         if (argc != 3)
 523         {
 524                 Jim_WrongNumArgs(interp, 1, argv, "poke ?address? ?value?");
 525                 return JIM_ERR;
 526         }
 527
 528         long address;
 529         if (Jim_GetLong(interp, argv[1], &address) != JIM_OK)
 530                 return JIM_ERR;
 531         long value;
 532         if (Jim_GetLong(interp, argv[2], &value) != JIM_OK)
 533                 return JIM_ERR;
 534
 535         *((volatile int *) address) = value;
 536
 537         return JIM_OK;
 538 }
 539
 540
 541 /* not so pretty code to fish out ip number*/
 542 static int zylinjtag_Jim_Command_ip(Jim_Interp *interp, int argc,
 543                 Jim_Obj * const *argv)
 544 {
 545 #if !defined(__CYGWIN__)
 546         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 547
 548         struct ifaddrs *ifa = NULL, *ifp = NULL;
 549
 550         if (getifaddrs(&ifp) < 0)
 551         {
 552                 return JIM_ERR;
 553         }
 554
 555         for (ifa = ifp; ifa; ifa = ifa->ifa_next)
 556         {
 557                 char ip[200];
 558                 socklen_t salen;
 559
 560                 if (ifa->ifa_addr->sa_family == AF_INET)
 561                         salen = sizeof(struct sockaddr_in);
 562                 else if (ifa->ifa_addr->sa_family == AF_INET6)
 563                         salen = sizeof(struct sockaddr_in6);
 564                 else
 565                         continue;
 566
 567                 if (getnameinfo(ifa->ifa_addr, salen, ip, sizeof(ip), NULL, 0,
 568                                 NI_NUMERICHOST) < 0)
 569                 {
 570                         continue;
 571                 }
 572
 573                 Jim_AppendString(interp, tclOutput, ip, strlen(ip));
 574                 break;
 575
 576         }
 577
 578         freeifaddrs(ifp);
 579 #else
 580         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "fixme!!!", 0);
 581         LOG_ERROR("NOT IMPLEMENTED!!!");
 582 #endif
 583         Jim_SetResult(interp, tclOutput);
 584
 585         return JIM_OK;
 586 }
 587
 588 /* not so pretty code to fish out eth0 mac address */
 589 static int zylinjtag_Jim_Command_mac(Jim_Interp *interp, int argc,
 590                 Jim_Obj * const *argv)
 591 {
 592
 593
 594         struct ifreq *ifr, *ifend;
 595         struct ifreq ifreq;
 596         struct ifconf ifc;
 597         struct ifreq ifs[5];
 598         int SockFD;
 599
 600         SockFD = socket(AF_INET, SOCK_DGRAM, 0);
 601         if (SockFD < 0)
 602         {
 603                 return JIM_ERR;
 604         }
 605
 606         ifc.ifc_len = sizeof(ifs);
 607         ifc.ifc_req = ifs;
 608         if (ioctl(SockFD, SIOCGIFCONF, &ifc) < 0)
 609         {
 610                 close(SockFD);
 611                 return JIM_ERR;
 612         }
 613
 614         ifend = ifs + (ifc.ifc_len / sizeof(struct ifreq));
 615         for (ifr = ifc.ifc_req; ifr < ifend; ifr++)
 616         {
 617                 //if (ifr->ifr_addr.sa_family == AF_INET)
 618                 {
 619                         if (strcmp("eth0", ifr->ifr_name)!=0)
 620                                 continue;
 621                         strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
 622                         if (ioctl(SockFD, SIOCGIFHWADDR, &ifreq) < 0)
 623                         {
 624                                 close(SockFD);
 625                                 return JIM_ERR;
 626                         }
 627
 628                         close(SockFD);
 629
 630
 631                         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 632
 633                         char buffer[256];
 634                         sprintf(buffer, "%02x-%02x-%02x-%02x-%02x-%02x",
 635                                         ifreq.ifr_hwaddr.sa_data[0]&0xff,
 636                                         ifreq.ifr_hwaddr.sa_data[1]&0xff,
 637                                         ifreq.ifr_hwaddr.sa_data[2]&0xff,
 638                                         ifreq.ifr_hwaddr.sa_data[3]&0xff,
 639                                         ifreq.ifr_hwaddr.sa_data[4]&0xff,
 640                                         ifreq.ifr_hwaddr.sa_data[5]&0xff);
 641
 642                         Jim_AppendString(interp, tclOutput, buffer, strlen(buffer));
 643
 644                         Jim_SetResult(interp, tclOutput);
 645
 646                         return JIM_OK;
 647                 }
 648         }
 649         close(SockFD);
 650
 651         return JIM_ERR;
 652
 653 }
 654
 655
 656
 657 int ioutil_init(struct command_context_s *cmd_ctx)
 658 {
 659         register_command(cmd_ctx, NULL, "rm", handle_rm_command, COMMAND_ANY,
 660                         "remove file");
 661
 662         register_command(cmd_ctx, NULL, "cat", handle_cat_command, COMMAND_ANY,
 663                         "display file content");
 664
 665         register_command(cmd_ctx, NULL, "trunc", handle_trunc_command, COMMAND_ANY,
 666                         "truncate a file to 0 size");
 667
 668         register_command(cmd_ctx, NULL, "cp", handle_cp_command,
 669                                          COMMAND_ANY, "copy a file <from> <to>");
 670
 671         register_command(cmd_ctx, NULL, "append_file", handle_append_command,
 672                         COMMAND_ANY, "append a variable number of strings to a file");
 673
 674         register_command(cmd_ctx, NULL, "meminfo", handle_meminfo_command,
 675                         COMMAND_ANY, "display available ram memory");
 676
 677     Jim_CreateCommand(interp, "rm", zylinjtag_Jim_Command_rm, NULL, NULL);
 678
 679     Jim_CreateCommand(interp, "peek", zylinjtag_Jim_Command_peek, NULL, NULL);
 680     Jim_CreateCommand(interp, "poke", zylinjtag_Jim_Command_poke, NULL, NULL);
 681     Jim_CreateCommand(interp, "ls", zylinjtag_Jim_Command_ls, NULL, NULL);
 682
 683         Jim_CreateCommand(interp, "mac", zylinjtag_Jim_Command_mac,
 684                         NULL, NULL);
 685
 686         Jim_CreateCommand(interp, "ip", zylinjtag_Jim_Command_ip,
 687                         NULL, NULL);
 688
 689     return ERROR_OK;
 690 }
 691
 692