src/rrd_tool.c

   1 /*****************************************************************************
   2  * RRDtool 1.1.x  Copyright Tobias Oetiker, 1997 - 2002
   3  *****************************************************************************
   4  * rrd_tool.c  Startup wrapper
   5  *****************************************************************************/
   6
   7 #include "rrd_tool.h"
   8 #include "rrd_xport.h"
   9
  10 void PrintUsage(char *cmd);
  11 int CountArgs(char *aLine);
  12 int CreateArgs(char *, char *, int, char **);
  13 int HandleInputLine(int, char **, FILE*);
  14 int RemoteMode=0;
  15 int ChangeRoot=0;
  16 #define TRUE            1
  17 #define FALSE           0
  18 #define MAX_LENGTH      10000
  19
  20
  21 void PrintUsage(char *cmd)
  22 {
  23
  24     char help_main[] =
  25            "RRDtool 1.1.x  Copyright 1997-2003 by Tobias Oetiker <tobi@oetiker.ch>\n"
  26 #ifndef WIN32
  27            "               Compiled " MAKE_TIMESTAMP "\n\n"
  28 #else
  29            "               Compiled " __DATE__ " " __TIME__ "\n\n"
  30 #endif
  31            "Usage: rrdtool [options] command command_options\n\n";
  32
  33     char help_list[] =
  34            "Valid commands: create, update, updatev, graph, dump, restore,\n"
  35            "\t\tlast, info, fetch, tune, resize, xport\n\n";
  36
  37     char help_listremote[] =
  38            "Valid remote commands: quit, ls, cd, mkdir\n\n";
  39
  40
  41     char help_create[] =
  42            "* create - create a new RRD\n\n"
  43            "\trrdtool create filename [--start|-b start time]\n"
  44            "\t\t[--step|-s step]\n"
  45            "\t\t[DS:ds-name:DST:dst arguments]\n"
  46            "\t\t[RRA:CF:cf arguments]\n\n";
  47
  48     char help_dump[] =
  49            "* dump - dump an RRD to XML\n\n"
  50            "\trrdtool dump filename.rrd >filename.xml\n\n";
  51
  52     char help_info[] =
  53            "* info - returns the configuration and status of the RRD\n\n"
  54            "\trrdtool info filename.rrd\n\n";
  55
  56     char help_restore[] =
  57            "* restore - restore an RRD file from its XML form\n\n"
  58            "\trrdtool restore [--range-check|-r] [--force-overwrite|-f] filename.xml filename.rrd\n\n";
  59
  60     char help_last[] =
  61            "* last - show last update time for RRD\n\n"
  62            "\trrdtool last filename.rrd\n\n";
  63
  64     char help_update[] =
  65            "* update - update an RRD\n\n"
  66            "\trrdtool update filename\n"
  67            "\t\t--template|-t ds-name:ds-name:...\n"
  68            "\t\ttime|N:value[:value...]\n\n"
  69            "\t\tat-time@value[:value...]\n\n"
  70            "\t\t[ time:value[:value...] ..]\n\n";
  71
  72         char help_updatev[] =
  73            "* updatev - a verbose verion of update\n"
  74            "\treturns information about values, RRAs, and datasources updated\n\n"
  75            "\trrdtool updatev filename\n"
  76            "\t\t--template|-t ds-name:ds-name:...\n"
  77            "\t\ttime|N:value[:value...]\n\n"
  78            "\t\tat-time@value[:value...]\n\n"
  79            "\t\t[ time:value[:value...] ..]\n\n";
  80
  81     char help_fetch[] =
  82            "* fetch - fetch data out of an RRD\n\n"
  83            "\trrdtool fetch filename.rrd CF\n"
  84            "\t\t[--resolution|-r resolution]\n"
  85            "\t\t[--start|-s start] [--end|-e end]\n\n";
  86
  87     char help_graph[] =
  88            "* graph - generate a graph from one or several RRD\n\n"
  89            "\trrdtool graph filename [-s|--start seconds] [-e|--end seconds]\n"
  90            "\t\t[-x|--x-grid x-axis grid and label]\n"
  91            "\t\t[--alt-y-grid]\n"
  92            "\t\t[-y|--y-grid y-axis grid and label]\n"
  93            "\t\t[-v|--vertical-label string] [-w|--width pixels]\n"
  94            "\t\t[-h|--height pixels] [-o|--logarithmic]\n"
  95            "\t\t[-u|--upper-limit value] [-z|--lazy]\n"
  96            "\t\t[-l|--lower-limit value] [-r|--rigid]\n"
  97            "\t\t[-g|--no-legend]\n"
  98            "\t\t[--font FONTTAG:size:font]\n"
  99            "\t\t[--zoom factor]\n"
 100            "\t\t[--alt-autoscale]\n"
 101            "\t\t[--alt-autoscale-max]\n"
 102            "\t\t[--units-exponent value]\n"
 103            "\t\t[--step seconds]\n"
 104            "\t\t[-f|--imginfo printfstr]\n"
 105            "\t\t[-a|--imgformat PNG]\n"
 106            "\t\t[-c|--color COLORTAG#rrggbb[aa]] [-t|--title string]\n"
 107            "\t\t[DEF:vname=rrd:ds-name:CF]\n"
 108            "\t\t[CDEF:vname=rpn-expression]\n"
 109            "\t\t[PRINT:vname:CF:format]\n"
 110            "\t\t[GPRINT:vname:CF:format]\n"
 111            "\t\t[HRULE:value#rrggbb[aa][:legend]]\n"
 112            "\t\t[VRULE:value#rrggbb[aa][:legend]]\n"
 113            "\t\t[LINE{1|2|3}:vname[#rrggbb[aa][:legend]]]\n"
 114            "\t\t[AREA:vname[#rrggbb[aa][:legend]]]\n"
 115            "\t\t[STACK:vname[#rrggbb[aa][:legend]]]\n\n";
 116
 117     char help_tune[] =
 118            " * tune -  Modify some basic properties of an RRD\n\n"
 119            "\trrdtool tune filename\n"
 120            "\t\t[--heartbeat|-h ds-name:heartbeat]\n"
 121            "\t\t[--data-source-type|-d ds-name:DST]\n"
 122            "\t\t[--data-source-rename|-r old-name:new-name]\n"
 123            "\t\t[--minimum|-i ds-name:min] [--maximum|-a ds-name:max]\n"
 124            "\t\t[--deltapos scale-value] [--deltaneg scale-value]\n"
 125            "\t\t[--failure-threshold integer]\n"
 126            "\t\t[--window-length integer]\n"
 127            "\t\t[--alpha adaptation-parameter]\n"
 128            "\t\t[--beta adaptation-parameter]\n"
 129            "\t\t[--gamma adaptation-parameter]\n"
 130            "\t\t[--gamma-deviation adaptation-parameter]\n"
 131            "\t\t[--aberrant-reset ds-name]\n\n";
 132
 133     char help_resize[] =
 134            " * resize - alter the lenght of one of the RRAs in an RRD\n\n"
 135            "\trrdtool resize filename rranum GROW|SHRINK rows\n\n";
 136
 137     char help_xport[] =
 138            "* xport - generate XML dump from one or several RRD\n\n"
 139            "\trrdtool xport [-s|--start seconds] [-e|--end seconds]\n"
 140            "\t\t[-m|--maxrows rows]\n"
 141            "\t\t[--step seconds]\n"
 142            "\t\t[DEF:vname=rrd:ds-name:CF]\n"
 143            "\t\t[CDEF:vname=rpn-expression]\n"
 144            "\t\t[XPORT:vname:legend]\n\n";
 145
 146     char help_quit[] =
 147            " * quit - closeing a session in remote mode\n\n"
 148            "\trrdtool quit\n\n";
 149
 150     char help_ls[] =
 151            " * ls - lists all *.rrd files in current directory\n\n"
 152            "\trrdtool ls\n\n";
 153
 154     char help_cd[] =
 155            " * cd - changes the current directory\n\n"
 156            "\trrdtool cd new direcotry\n\n";
 157
 158     char help_mkdir[] =
 159            " * mkdir - creates a new direcotry\n\n"
 160            "\trrdtool mkdir newdirecotryname\n\n";
 161
 162     char help_lic[] =
 163            "RRDtool is distributed under the Terms of the GNU General\n"
 164            "Public License Version 2. (www.gnu.org/copyleft/gpl.html)\n\n"
 165
 166            "For more information read the RRD manpages\n\n";
 167
 168     enum { C_NONE, C_CREATE, C_DUMP, C_INFO, C_RESTORE, C_LAST,
 169            C_UPDATE, C_FETCH, C_GRAPH, C_TUNE, C_RESIZE, C_XPORT,
 170            C_QUIT, C_LS, C_CD, C_MKDIR, C_UPDATEV };
 171
 172     int help_cmd = C_NONE;
 173
 174     if (cmd)
 175         {
 176             if (!strcmp(cmd,"create"))
 177                 help_cmd = C_CREATE;
 178             else if (!strcmp(cmd,"dump"))
 179                 help_cmd = C_DUMP;
 180             else if (!strcmp(cmd,"info"))
 181                 help_cmd = C_INFO;
 182             else if (!strcmp(cmd,"restore"))
 183                 help_cmd = C_RESTORE;
 184             else if (!strcmp(cmd,"last"))
 185                 help_cmd = C_LAST;
 186             else if (!strcmp(cmd,"update"))
 187                 help_cmd = C_UPDATE;
 188             else if (!strcmp(cmd,"updatev"))
 189                 help_cmd = C_UPDATEV;
 190             else if (!strcmp(cmd,"fetch"))
 191                 help_cmd = C_FETCH;
 192             else if (!strcmp(cmd,"graph"))
 193                 help_cmd = C_GRAPH;
 194             else if (!strcmp(cmd,"tune"))
 195                 help_cmd = C_TUNE;
 196             else if (!strcmp(cmd,"resize"))
 197                 help_cmd = C_RESIZE;
 198             else if (!strcmp(cmd,"xport"))
 199                 help_cmd = C_XPORT;
 200             else if (!strcmp(cmd,"quit"))
 201                 help_cmd = C_QUIT;
 202             else if (!strcmp(cmd,"ls"))
 203                 help_cmd = C_LS;
 204             else if (!strcmp(cmd,"cd"))
 205                 help_cmd = C_CD;
 206             else if (!strcmp(cmd,"mkdir"))
 207                 help_cmd = C_MKDIR;
 208         }
 209     fputs(help_main, stdout);
 210     switch (help_cmd)
 211         {
 212             case C_NONE:
 213                 fputs(help_list, stdout);
 214                 if (RemoteMode){
 215                    fputs(help_listremote, stdout);
 216                 }
 217                 break;
 218             case C_CREATE:
 219                 fputs(help_create, stdout);
 220                 break;
 221             case C_DUMP:
 222                 fputs(help_dump, stdout);
 223                 break;
 224             case C_INFO:
 225                 fputs(help_info, stdout);
 226                 break;
 227             case C_RESTORE:
 228                 fputs(help_restore, stdout);
 229                 break;
 230             case C_LAST:
 231                 fputs(help_last, stdout);
 232                 break;
 233             case C_UPDATE:
 234                 fputs(help_update, stdout);
 235                 break;
 236             case C_UPDATEV:
 237                 fputs(help_updatev, stdout);
 238                 break;
 239             case C_FETCH:
 240                 fputs(help_fetch, stdout);
 241                 break;
 242             case C_GRAPH:
 243                 fputs(help_graph, stdout);
 244                 break;
 245             case C_TUNE:
 246                 fputs(help_tune, stdout);
 247                 break;
 248             case C_RESIZE:
 249                 fputs(help_resize, stdout);
 250                 break;
 251             case C_XPORT:
 252                 fputs(help_xport, stdout);
 253                 break;
 254             case C_QUIT:
 255                 fputs(help_quit, stdout);
 256                 break;
 257             case C_LS:
 258                 fputs(help_ls, stdout);
 259                 break;
 260             case C_CD:
 261                 fputs(help_cd, stdout);
 262                 break;
 263             case C_MKDIR:
 264                 fputs(help_mkdir, stdout);
 265                 break;
 266         }
 267     fputs(help_lic, stdout);
 268 }
 269
 270
 271 int main(int argc, char *argv[])
 272 {
 273     char **myargv;
 274     char aLine[MAX_LENGTH];
 275 #ifdef HAVE_CHROOT
 276     char *firstdir="";
 277 #endif
 278 #ifdef MUST_DISABLE_SIGFPE
 279     signal(SIGFPE,SIG_IGN);
 280 #endif
 281 #ifdef MUST_DISABLE_FPMASK
 282     fpsetmask(0);
 283 #endif
 284     if (argc == 1)
 285         {
 286             PrintUsage("");
 287             return 0;
 288         }
 289
 290     if (((argc == 2)||(argc == 3)) && !strcmp("-",argv[1]))
 291         {
 292 #if HAVE_GETRUSAGE
 293           struct rusage  myusage;
 294           struct timeval starttime;
 295           struct timeval currenttime;
 296           struct timezone tz;
 297
 298             tz.tz_minuteswest =0;
 299             tz.tz_dsttime=0;
 300             gettimeofday(&starttime,&tz);
 301 #endif
 302           RemoteMode=1;
 303 #ifdef HAVE_CHROOT
 304           if ((argc == 3) && strcmp("",argv[2])){
 305              if (getuid()==0){
 306                 chroot(argv[2]);
 307                 if (errno!=0){
 308                    fprintf(stderr,"ERROR: can't change root to '%s' errno=%d\n",
 309                            argv[2],errno);
 310                     exit(errno);
 311                 }
 312                 ChangeRoot=1;
 313                 firstdir="/";
 314              }
 315              else{
 316                 firstdir=argv[2];
 317              }
 318           }
 319           if (strcmp(firstdir,"")){
 320              chdir(firstdir);
 321              if (errno!=0){
 322                 fprintf(stderr,"ERROR: %s\n",strerror(errno));
 323                 exit(errno);
 324              }
 325           }
 326 #else
 327           fprintf(stderr,"ERROR: change root is not supported by your OS "
 328                          "or at least by this copy of rrdtool\n");
 329           exit(1);
 330 #endif
 331
 332             while (fgets(aLine, sizeof(aLine)-1, stdin)){
 333                 if ((argc = CountArgs(aLine)) == 0)  {
 334                     fprintf(stderr,"ERROR: not enough arguments\n");
 335                 }
 336                 if ((myargv = (char **) malloc((argc+1) *
 337                                                sizeof(char *))) == NULL)   {
 338                     perror("malloc");
 339                     return -1;
 340                 }
 341                 if ((argc=CreateArgs(argv[0], aLine, argc, myargv)) < 0) {
 342                     fprintf(stderr, "ERROR: creating arguments\n");
 343                     return -1;
 344                 }
 345
 346                 if (HandleInputLine(argc, myargv, stdout))
 347                     return -1;
 348                 free(myargv);
 349
 350 #if HAVE_GETRUSAGE
 351                 getrusage(RUSAGE_SELF,&myusage);
 352                 gettimeofday(&currenttime,&tz);
 353                 printf("OK u:%1.2f s:%1.2f r:%1.2f\n",
 354                        (double)myusage.ru_utime.tv_sec+
 355                        (double)myusage.ru_utime.tv_usec/1000000.0,
 356                        (double)myusage.ru_stime.tv_sec+
 357                        (double)myusage.ru_stime.tv_usec/1000000.0,
 358                        (double)(currenttime.tv_sec-starttime.tv_sec)
 359                        +(double)(currenttime.tv_usec-starttime.tv_usec)
 360                        /1000000.0);
 361 #else
 362                 printf("OK\n");
 363 #endif
 364                 fflush(stdout); /* this is important for pipes to work */
 365             }
 366         }
 367     else if (argc == 2)
 368         {
 369                 PrintUsage(argv[1]);
 370                 exit(0);
 371         }
 372     else if (argc == 3 && !strcmp(argv[1],"help"))
 373         {
 374                 PrintUsage(argv[2]);
 375                 exit(0);
 376         }
 377     else
 378         HandleInputLine(argc, argv, stderr);
 379     return 0;
 380 }
 381
 382 /* HandleInputLine is NOT thread safe - due to readdir issues,
 383    resolving them portably is not really simple. */
 384 int HandleInputLine(int argc, char **argv, FILE* out)
 385 {
 386 #if defined(HAVE_OPENDIR) && defined (HAVE_READDIR)
 387     DIR           *curdir; /* to read current dir with ls */
 388     struct dirent *dent;
 389 #endif
 390 #if defined(HAVE_SYS_STAT_H)
 391     struct stat   st;
 392 #endif
 393     optind=0; /* reset gnu getopt */
 394     opterr=0; /* no error messages */
 395
 396     if (RemoteMode){
 397        if (argc>1 && strcmp("quit", argv[1]) == 0){
 398           if (argc>2){
 399              printf("ERROR: invalid parameter count for quit\n");
 400              return(0);
 401           }
 402           exit(0);
 403        }
 404 #if defined(HAVE_OPENDIR) && defined(HAVE_READDIR) && defined(HAVE_CHDIR)
 405        if (argc>1 && strcmp("cd", argv[1]) == 0){
 406           if (argc>3){
 407              printf("ERROR: invalid parameter count for cd\n");
 408              return(0);
 409           }
 410 #if ! defined(HAVE_CHROOT) || ! defined(HAVE_GETUID)
 411           if (getuid()==0 && ! ChangeRoot){
 412              printf("ERROR: chdir security problem - rrdtool is runnig as "
 413                     "root an no chroot!\n");
 414              return(0);
 415           }
 416 #endif
 417           chdir(argv[2]);
 418           if (errno!=0){
 419              printf("ERROR: %s\n",strerror(errno));
 420           }
 421           return(0);
 422        }
 423        if (argc>1 && strcmp("mkdir", argv[1]) == 0){
 424           if (argc>3){
 425              printf("ERROR: invalid parameter count for mkdir\n");
 426              return(0);
 427           }
 428 #if ! defined(HAVE_CHROOT) || ! defined(HAVE_GETUID)
 429           if (getuid()==0 && ! ChangeRoot){
 430              printf("ERROR: mkdir security problem - rrdtool is runnig as "
 431                     "root an no chroot!\n");
 432              return(0);
 433           }
 434 #endif
 435           mkdir(argv[2],0777);
 436           if (errno!=0){
 437              printf("ERROR: %s\n",strerror(errno));
 438           }
 439           return(0);
 440        }
 441        if (argc>1 && strcmp("ls", argv[1]) == 0){
 442           if (argc>2){
 443              printf("ERROR: invalid parameter count for ls\n");
 444              return(0);
 445           }
 446           if ((curdir=opendir("."))!=NULL){
 447              while((dent=readdir(curdir))!=NULL){
 448                 if (!stat(dent->d_name,&st)){
 449                    if (S_ISDIR(st.st_mode)){
 450                       printf("d %s\n",dent->d_name);
 451                    }
 452                    if (strlen(dent->d_name)>4 && S_ISREG(st.st_mode)){
 453                       if (!strcmp(dent->d_name+NAMLEN(dent)-4,".rrd") ||
 454                           !strcmp(dent->d_name+NAMLEN(dent)-4,".RRD")){
 455                          printf("- %s\n",dent->d_name);
 456                       }
 457                    }
 458                 }
 459              }
 460           }
 461           else{
 462              printf("ERROR: %s\n",strerror(errno));
 463              return(errno);
 464           }
 465           return(0);
 466        }
 467 #endif /* opendir and readdir */
 468
 469     }
 470     if (argc < 3
 471         || strcmp("help", argv[1]) == 0
 472         || strcmp("--help", argv[1]) == 0
 473         || strcmp("-help", argv[1]) == 0
 474         || strcmp("-?", argv[1]) == 0
 475         || strcmp("-h", argv[1]) == 0 ) {
 476         PrintUsage("");
 477         return 0;
 478     }
 479
 480     if (strcmp("create", argv[1]) == 0)
 481         rrd_create(argc-1, &argv[1]);
 482     else if (strcmp("dump", argv[1]) == 0)
 483         rrd_dump(argc-1, &argv[1]);
 484     else if (strcmp("info", argv[1]) == 0
 485                 || strcmp("updatev", argv[1]) == 0){
 486         info_t *data,*save;
 487         if (strcmp("info",argv[1]) == 0)
 488            data=rrd_info(argc-1, &argv[1]);
 489     else
 490            data=rrd_update_v(argc-1, &argv[1]);
 491         while (data) {
 492             save=data;
 493             printf ("%s = ", data->key);
 494             free(data->key);
 495
 496             switch (data->type) {
 497             case RD_I_VAL:
 498                 if (isnan (data->value.u_val))
 499                     printf("NaN");
 500                 else
 501                     printf ("%0.10e", data->value.u_val);
 502                 break;
 503             case RD_I_CNT:
 504                 printf ("%lu", data->value.u_cnt);
 505                 break;
 506             case RD_I_INT:
 507                 printf ("%d", data->value.u_int);
 508                 break;
 509             case RD_I_STR:
 510                 printf ("\"%s\"", data->value.u_str);
 511                 free(data->value.u_str);
 512                 break;
 513             }
 514             data = data->next;
 515             free(save);
 516             printf ("\n");
 517         }
 518         free(data);
 519     }
 520
 521     else if (strcmp("--version", argv[1]) == 0 ||
 522              strcmp("version", argv[1]) == 0 ||
 523              strcmp("v", argv[1]) == 0 ||
 524              strcmp("-v", argv[1]) == 0  ||
 525              strcmp("-version", argv[1]) == 0  )
 526         printf("RRDtool 1.1.x  Copyright (C) 1997-2003 by Tobias Oetiker <tobi@oetiker.ch>\n");
 527     else if (strcmp("restore", argv[1]) == 0)
 528         rrd_restore(argc-1, &argv[1]);
 529     else if (strcmp("resize", argv[1]) == 0)
 530         rrd_resize(argc-1, &argv[1]);
 531     else if (strcmp("last", argv[1]) == 0)
 532         printf("%ld\n",rrd_last(argc-1, &argv[1]));
 533     else if (strcmp("update", argv[1]) == 0)
 534         rrd_update(argc-1, &argv[1]);
 535     else if (strcmp("fetch", argv[1]) == 0) {
 536         time_t        start,end, ti;
 537         unsigned long step, ds_cnt,i,ii;
 538         rrd_value_t   *data,*datai;
 539         char          **ds_namv;
 540         if (rrd_fetch(argc-1, &argv[1],&start,&end,&step,&ds_cnt,&ds_namv,&data) != -1) {
 541             datai=data;
 542             printf("           ");
 543             for (i = 0; i<ds_cnt;i++)
 544                 printf("%20s",ds_namv[i]);
 545             printf ("\n\n");
 546             for (ti = start+step; ti <= end; ti += step){
 547                 printf("%10lu:", ti);
 548                 for (ii = 0; ii < ds_cnt; ii++)
 549                     printf(" %0.10e", *(datai++));
 550                 printf("\n");
 551             }
 552             for (i=0;i<ds_cnt;i++)
 553                   free(ds_namv[i]);
 554             free(ds_namv);
 555             free (data);
 556         }
 557     } else if (strcmp("xport", argv[1]) == 0) {
 558         int xxsize;
 559         unsigned long int j = 0;
 560         time_t        start,end, ti;
 561         unsigned long step, col_cnt,row_cnt;
 562         rrd_value_t   *data,*ptr;
 563         char          **legend_v;
 564         if(rrd_xport(argc-1, &argv[1], &xxsize,&start,&end,&step,&col_cnt,&legend_v,&data) != -1) {
 565           row_cnt = (end-start)/step;
 566           ptr = data;
 567           printf("<?xml version=\"1.0\" encoding=\"%s\"?>\n\n", XML_ENCODING);
 568           printf("<%s>\n", ROOT_TAG);
 569           printf("  <%s>\n", META_TAG);
 570           printf("    <%s>%lu</%s>\n", META_START_TAG, start+step, META_START_TAG);
 571           printf("    <%s>%lu</%s>\n", META_STEP_TAG, step, META_STEP_TAG);
 572           printf("    <%s>%lu</%s>\n", META_END_TAG, end, META_END_TAG);
 573           printf("    <%s>%lu</%s>\n", META_ROWS_TAG, row_cnt, META_ROWS_TAG);
 574           printf("    <%s>%lu</%s>\n", META_COLS_TAG, col_cnt, META_COLS_TAG);
 575           printf("    <%s>\n", LEGEND_TAG);
 576           for (j = 0; j < col_cnt; j++) {
 577             char *entry = NULL;
 578             entry = legend_v[j];
 579             printf("      <%s>%s</%s>\n", LEGEND_ENTRY_TAG, entry, LEGEND_ENTRY_TAG);
 580             free(entry);
 581           }
 582           free(legend_v);
 583           printf("    </%s>\n", LEGEND_TAG);
 584           printf("  </%s>\n", META_TAG);
 585           printf("  <%s>\n", DATA_TAG);
 586           for (ti = start+step; ti <= end; ti += step) {
 587             printf ("    <%s>", DATA_ROW_TAG);
 588             printf ("<%s>%lu</%s>", COL_TIME_TAG, ti, COL_TIME_TAG);
 589             for (j = 0; j < col_cnt; j++) {
 590               rrd_value_t newval = DNAN;
 591               newval = *ptr;
 592               if(isnan(newval)){
 593                 printf("<%s>NaN</%s>", COL_DATA_TAG, COL_DATA_TAG);
 594               } else {
 595                 printf("<%s>%0.10e</%s>", COL_DATA_TAG, newval, COL_DATA_TAG);
 596               };
 597               ptr++;
 598             }
 599             printf("</%s>\n", DATA_ROW_TAG);
 600           }
 601           free(data);
 602           printf("  </%s>\n", DATA_TAG);
 603           printf("</%s>\n", ROOT_TAG);
 604         }
 605     }
 606     else if (strcmp("graph", argv[1]) == 0) {
 607         char **calcpr;
 608         const char *imgfile = argv[2]; /* rrd_graph changes argv pointer */
 609         int xsize, ysize;
 610         int i;
 611         int tostdout = (strcmp(argv[2],"-") == 0);
 612         if( rrd_graph(argc-1, &argv[1], &calcpr, &xsize, &ysize, NULL) != -1 ) {
 613             if (!tostdout)
 614                 printf ("%dx%d\n",xsize,ysize);
 615             if (calcpr) {
 616                 for(i=0;calcpr[i];i++){
 617                     if (!tostdout)
 618                         printf("%s\n",calcpr[i]);
 619                     free(calcpr[i]);
 620                 }
 621                 free(calcpr);
 622             }
 623         }
 624
 625     } else if (strcmp("tune", argv[1]) == 0)
 626                 rrd_tune(argc-1, &argv[1]);
 627     else {
 628                 rrd_set_error("unknown function '%s'",argv[1]);
 629     }
 630     if (rrd_test_error()) {
 631         fprintf(out, "ERROR: %s\n",rrd_get_error());
 632         rrd_clear_error();
 633     }
 634     return(0);
 635 }
 636
 637 int CountArgs(char *aLine)
 638 {
 639     int i=0;
 640     int aCount = 0;
 641     int inarg = 0;
 642     while (aLine[i] == ' ') i++;
 643     while (aLine[i] != 0){
 644         if((aLine[i]== ' ') && inarg){
 645             inarg = 0;
 646         }
 647         if((aLine[i]!= ' ') && ! inarg){
 648             inarg = 1;
 649             aCount++;
 650         }
 651         i++;
 652     }
 653     return aCount;
 654 }
 655
 656 /*
 657  * CreateArgs - take a string (aLine) and tokenize
 658  */
 659 int CreateArgs(char *pName, char *aLine, int argc, char **argv)
 660 {
 661     char        *getP, *putP;
 662     char        **pargv = argv;
 663     char        Quote = 0;
 664     int inArg = 0;
 665     int len;
 666
 667     len = strlen(aLine);
 668     /* remove trailing space and newlines */
 669     while (len && aLine[len] <= ' ') {
 670         aLine[len] = 0 ; len--;
 671     }
 672     /* sikp leading blanks */
 673     while (*aLine && *aLine <= ' ') aLine++;
 674
 675     pargv[0] = pName;
 676     argc = 1;
 677     getP = aLine;
 678     putP = aLine;
 679     while (*getP){
 680         switch (*getP) {
 681         case ' ':
 682             if (Quote){
 683                 *(putP++)=*getP;
 684             } else
 685                 if(inArg) {
 686                     *(putP++) = 0;
 687                     inArg = 0;
 688                 }
 689             break;
 690         case '"':
 691         case '\'':
 692             if (Quote != 0) {
 693                 if (Quote == *getP)
 694                     Quote = 0;
 695                 else {
 696                     *(putP++)=*getP;
 697                 }
 698             } else {
 699                 if(!inArg){
 700                     pargv[argc++] = putP;
 701                     inArg=1;
 702                 }
 703                 Quote = *getP;
 704             }
 705             break;
 706         default:
 707             if(!inArg){
 708                 pargv[argc++] = putP;
 709                 inArg=1;
 710             }
 711             *(putP++)=*getP;
 712             break;
 713         }
 714         getP++;
 715     }
 716
 717     *putP = '\0';
 718
 719     if (Quote)
 720         return -1;
 721     else
 722         return argc;
 723 }
 724
 725