src/rrd_tool.c

   1 /*****************************************************************************
   2  * RRDtool 1.1.x  Copyright Tobias Oetiker, 1997 - 2004
   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 1997-2004 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 version 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 /* break up very large strings (help_graph, help_tune) for ISO C89 compliance*/
  88
  89     char help_graph1[] =
  90            "* graph - generate a graph from one or several RRD\n\n"
  91            "\trrdtool graph filename [-s|--start seconds] [-e|--end seconds]\n"
  92            "\t\t[-x|--x-grid x-axis grid and label]\n"
  93            "\t\t[--alt-y-grid]\n"
  94            "\t\t[-y|--y-grid y-axis grid and label]\n"
  95            "\t\t[-v|--vertical-label string] [-w|--width pixels]\n"
  96            "\t\t[-h|--height pixels] [-o|--logarithmic]\n"
  97            "\t\t[-u|--upper-limit value] [-z|--lazy]\n"
  98            "\t\t[-l|--lower-limit value] [-r|--rigid]\n"
  99            "\t\t[-g|--no-legend]\n";
 100     char help_graph2[] =
 101            "\t\t[-j|--only-graph]\n"
 102            "\t\t[--font FONTTAG:size:font]\n"
 103            "\t\t[--zoom factor]\n"
 104            "\t\t[--alt-autoscale]\n"
 105            "\t\t[--alt-autoscale-max]\n"
 106            "\t\t[--units-exponent value]\n"
 107            "\t\t[--step seconds]\n"
 108            "\t\t[-f|--imginfo printfstr]\n"
 109            "\t\t[-a|--imgformat PNG]\n"
 110            "\t\t[-c|--color COLORTAG#rrggbb[aa]] [-t|--title string]\n";
 111     char help_graph3[] =
 112            "\t\t[DEF:vname=rrd:ds-name:CF]\n"
 113            "\t\t[CDEF:vname=rpn-expression]\n"
 114            "\t\t[PRINT:vname:CF:format]\n"
 115            "\t\t[GPRINT:vname:CF:format]\n"
 116            "\t\t[HRULE:value#rrggbb[aa][:legend]]\n"
 117            "\t\t[VRULE:value#rrggbb[aa][:legend]]\n"
 118            "\t\t[LINE{1|2|3}:vname[#rrggbb[aa][:legend]]]\n"
 119            "\t\t[AREA:vname[#rrggbb[aa][:legend]]]\n"
 120            "\t\t[STACK:vname[#rrggbb[aa][:legend]]]\n\n";
 121
 122     char help_tune1[] =
 123            " * tune -  Modify some basic properties of an RRD\n\n"
 124            "\trrdtool tune filename\n"
 125            "\t\t[--heartbeat|-h ds-name:heartbeat]\n"
 126            "\t\t[--data-source-type|-d ds-name:DST]\n"
 127            "\t\t[--data-source-rename|-r old-name:new-name]\n"
 128            "\t\t[--minimum|-i ds-name:min] [--maximum|-a ds-name:max]\n"
 129            "\t\t[--deltapos scale-value] [--deltaneg scale-value]\n"
 130            "\t\t[--failure-threshold integer]\n"
 131            "\t\t[--window-length integer]\n"
 132            "\t\t[--alpha adaptation-parameter]\n";
 133     char help_tune2[] =
 134            " * tune -  Modify some basic properties of an RRD\n\n"
 135            "\t\t[--beta adaptation-parameter]\n"
 136            "\t\t[--gamma adaptation-parameter]\n"
 137            "\t\t[--gamma-deviation adaptation-parameter]\n"
 138            "\t\t[--aberrant-reset ds-name]\n\n";
 139
 140     char help_resize[] =
 141            " * resize - alter the length of one of the RRAs in an RRD\n\n"
 142            "\trrdtool resize filename rranum GROW|SHRINK rows\n\n";
 143
 144     char help_xport[] =
 145            "* xport - generate XML dump from one or several RRD\n\n"
 146            "\trrdtool xport [-s|--start seconds] [-e|--end seconds]\n"
 147            "\t\t[-m|--maxrows rows]\n"
 148            "\t\t[--step seconds]\n"
 149            "\t\t[DEF:vname=rrd:ds-name:CF]\n"
 150            "\t\t[CDEF:vname=rpn-expression]\n"
 151            "\t\t[XPORT:vname:legend]\n\n";
 152
 153     char help_quit[] =
 154            " * quit - closing a session in remote mode\n\n"
 155            "\trrdtool quit\n\n";
 156
 157     char help_ls[] =
 158            " * ls - lists all *.rrd files in current directory\n\n"
 159            "\trrdtool ls\n\n";
 160
 161     char help_cd[] =
 162            " * cd - changes the current directory\n\n"
 163            "\trrdtool cd new directory\n\n";
 164
 165     char help_mkdir[] =
 166            " * mkdir - creates a new directory\n\n"
 167            "\trrdtool mkdir newdirectoryname\n\n";
 168
 169     char help_lic[] =
 170            "RRDtool is distributed under the Terms of the GNU General\n"
 171            "Public License Version 2. (www.gnu.org/copyleft/gpl.html)\n\n"
 172
 173            "For more information read the RRD manpages\n\n";
 174
 175     enum { C_NONE, C_CREATE, C_DUMP, C_INFO, C_RESTORE, C_LAST,
 176            C_UPDATE, C_FETCH, C_GRAPH, C_TUNE, C_RESIZE, C_XPORT,
 177            C_QUIT, C_LS, C_CD, C_MKDIR, C_UPDATEV };
 178
 179     int help_cmd = C_NONE;
 180
 181     if (cmd)
 182         {
 183             if (!strcmp(cmd,"create"))
 184                 help_cmd = C_CREATE;
 185             else if (!strcmp(cmd,"dump"))
 186                 help_cmd = C_DUMP;
 187             else if (!strcmp(cmd,"info"))
 188                 help_cmd = C_INFO;
 189             else if (!strcmp(cmd,"restore"))
 190                 help_cmd = C_RESTORE;
 191             else if (!strcmp(cmd,"last"))
 192                 help_cmd = C_LAST;
 193             else if (!strcmp(cmd,"update"))
 194                 help_cmd = C_UPDATE;
 195             else if (!strcmp(cmd,"updatev"))
 196                 help_cmd = C_UPDATEV;
 197             else if (!strcmp(cmd,"fetch"))
 198                 help_cmd = C_FETCH;
 199             else if (!strcmp(cmd,"graph"))
 200                 help_cmd = C_GRAPH;
 201             else if (!strcmp(cmd,"tune"))
 202                 help_cmd = C_TUNE;
 203             else if (!strcmp(cmd,"resize"))
 204                 help_cmd = C_RESIZE;
 205             else if (!strcmp(cmd,"xport"))
 206                 help_cmd = C_XPORT;
 207             else if (!strcmp(cmd,"quit"))
 208                 help_cmd = C_QUIT;
 209             else if (!strcmp(cmd,"ls"))
 210                 help_cmd = C_LS;
 211             else if (!strcmp(cmd,"cd"))
 212                 help_cmd = C_CD;
 213             else if (!strcmp(cmd,"mkdir"))
 214                 help_cmd = C_MKDIR;
 215         }
 216     fputs(help_main, stdout);
 217     switch (help_cmd)
 218         {
 219             case C_NONE:
 220                 fputs(help_list, stdout);
 221                 if (RemoteMode){
 222                    fputs(help_listremote, stdout);
 223                 }
 224                 break;
 225             case C_CREATE:
 226                 fputs(help_create, stdout);
 227                 break;
 228             case C_DUMP:
 229                 fputs(help_dump, stdout);
 230                 break;
 231             case C_INFO:
 232                 fputs(help_info, stdout);
 233                 break;
 234             case C_RESTORE:
 235                 fputs(help_restore, stdout);
 236                 break;
 237             case C_LAST:
 238                 fputs(help_last, stdout);
 239                 break;
 240             case C_UPDATE:
 241                 fputs(help_update, stdout);
 242                 break;
 243             case C_UPDATEV:
 244                 fputs(help_updatev, stdout);
 245                 break;
 246             case C_FETCH:
 247                 fputs(help_fetch, stdout);
 248                 break;
 249             case C_GRAPH:
 250                 fputs(help_graph1, stdout);
 251                 fputs(help_graph2, stdout);
 252                 fputs(help_graph3, stdout);
 253                 break;
 254             case C_TUNE:
 255                 fputs(help_tune1, stdout);
 256                 fputs(help_tune2, stdout);
 257                 break;
 258             case C_RESIZE:
 259                 fputs(help_resize, stdout);
 260                 break;
 261             case C_XPORT:
 262                 fputs(help_xport, stdout);
 263                 break;
 264             case C_QUIT:
 265                 fputs(help_quit, stdout);
 266                 break;
 267             case C_LS:
 268                 fputs(help_ls, stdout);
 269                 break;
 270             case C_CD:
 271                 fputs(help_cd, stdout);
 272                 break;
 273             case C_MKDIR:
 274                 fputs(help_mkdir, stdout);
 275                 break;
 276         }
 277     fputs(help_lic, stdout);
 278 }
 279
 280
 281 int main(int argc, char *argv[])
 282 {
 283     char **myargv;
 284     char aLine[MAX_LENGTH];
 285 #ifdef HAVE_CHROOT
 286     char *firstdir="";
 287 #endif
 288 #ifdef MUST_DISABLE_SIGFPE
 289     signal(SIGFPE,SIG_IGN);
 290 #endif
 291 #ifdef MUST_DISABLE_FPMASK
 292     fpsetmask(0);
 293 #endif
 294     if (argc == 1)
 295         {
 296             PrintUsage("");
 297             return 0;
 298         }
 299
 300     if (((argc == 2)||(argc == 3)) && !strcmp("-",argv[1]))
 301         {
 302 #if HAVE_GETRUSAGE
 303           struct rusage  myusage;
 304           struct timeval starttime;
 305           struct timeval currenttime;
 306           struct timezone tz;
 307
 308             tz.tz_minuteswest =0;
 309             tz.tz_dsttime=0;
 310             gettimeofday(&starttime,&tz);
 311 #endif
 312           RemoteMode=1;
 313 #ifdef HAVE_CHROOT
 314           if ((argc == 3) && strcmp("",argv[2])){
 315              if (getuid()==0){
 316                 chroot(argv[2]);
 317                 if (errno!=0){
 318                    fprintf(stderr,"ERROR: can't change root to '%s' errno=%d\n",
 319                            argv[2],errno);
 320                     exit(errno);
 321                 }
 322                 ChangeRoot=1;
 323                 firstdir="/";
 324              }
 325              else{
 326                 firstdir=argv[2];
 327              }
 328           }
 329           if (strcmp(firstdir,"")){
 330              chdir(firstdir);
 331              if (errno!=0){
 332                 fprintf(stderr,"ERROR: %s\n",rrd_strerror(errno));
 333                 exit(errno);
 334              }
 335           }
 336 #else
 337           fprintf(stderr,"ERROR: change root is not supported by your OS "
 338                          "or at least by this copy of rrdtool\n");
 339           exit(1);
 340 #endif
 341
 342             while (fgets(aLine, sizeof(aLine)-1, stdin)){
 343                 if ((argc = CountArgs(aLine)) == 0)  {
 344                     fprintf(stderr,"ERROR: not enough arguments\n");
 345                 }
 346                 if ((myargv = (char **) malloc((argc+1) *
 347                                                sizeof(char *))) == NULL)   {
 348                     perror("malloc");
 349                     return -1;
 350                 }
 351                 if ((argc=CreateArgs(argv[0], aLine, argc, myargv)) < 0) {
 352                     fprintf(stderr, "ERROR: creating arguments\n");
 353                     return -1;
 354                 }
 355
 356                 if (HandleInputLine(argc, myargv, stdout))
 357                     return -1;
 358                 free(myargv);
 359
 360 #if HAVE_GETRUSAGE
 361                 getrusage(RUSAGE_SELF,&myusage);
 362                 gettimeofday(&currenttime,&tz);
 363                 printf("OK u:%1.2f s:%1.2f r:%1.2f\n",
 364                        (double)myusage.ru_utime.tv_sec+
 365                        (double)myusage.ru_utime.tv_usec/1000000.0,
 366                        (double)myusage.ru_stime.tv_sec+
 367                        (double)myusage.ru_stime.tv_usec/1000000.0,
 368                        (double)(currenttime.tv_sec-starttime.tv_sec)
 369                        +(double)(currenttime.tv_usec-starttime.tv_usec)
 370                        /1000000.0);
 371 #else
 372                 printf("OK\n");
 373 #endif
 374                 fflush(stdout); /* this is important for pipes to work */
 375             }
 376         }
 377     else if (argc == 2)
 378         {
 379                 PrintUsage(argv[1]);
 380                 exit(0);
 381         }
 382     else if (argc == 3 && !strcmp(argv[1],"help"))
 383         {
 384                 PrintUsage(argv[2]);
 385                 exit(0);
 386         }
 387     else
 388         HandleInputLine(argc, argv, stderr);
 389     return 0;
 390 }
 391
 392 /* HandleInputLine is NOT thread safe - due to readdir issues,
 393    resolving them portably is not really simple. */
 394 int HandleInputLine(int argc, char **argv, FILE* out)
 395 {
 396 #if defined(HAVE_OPENDIR) && defined (HAVE_READDIR)
 397     DIR           *curdir; /* to read current dir with ls */
 398     struct dirent *dent;
 399 #endif
 400 #if defined(HAVE_SYS_STAT_H)
 401     struct stat   st;
 402 #endif
 403     optind=0; /* reset gnu getopt */
 404     opterr=0; /* no error messages */
 405
 406     if (RemoteMode){
 407        if (argc>1 && strcmp("quit", argv[1]) == 0){
 408           if (argc>2){
 409              printf("ERROR: invalid parameter count for quit\n");
 410              return(0);
 411           }
 412           exit(0);
 413        }
 414 #if defined(HAVE_OPENDIR) && defined(HAVE_READDIR) && defined(HAVE_CHDIR)
 415        if (argc>1 && strcmp("cd", argv[1]) == 0){
 416           if (argc>3){
 417              printf("ERROR: invalid parameter count for cd\n");
 418              return(0);
 419           }
 420 #if ! defined(HAVE_CHROOT) || ! defined(HAVE_GETUID)
 421           if (getuid()==0 && ! ChangeRoot){
 422              printf("ERROR: chdir security problem - rrdtool is running as "
 423                     "root an no chroot!\n");
 424              return(0);
 425           }
 426 #endif
 427           chdir(argv[2]);
 428           if (errno!=0){
 429              printf("ERROR: %s\n",rrd_strerror(errno));
 430           }
 431           return(0);
 432        }
 433        if (argc>1 && strcmp("mkdir", argv[1]) == 0){
 434           if (argc>3){
 435              printf("ERROR: invalid parameter count for mkdir\n");
 436              return(0);
 437           }
 438 #if ! defined(HAVE_CHROOT) || ! defined(HAVE_GETUID)
 439           if (getuid()==0 && ! ChangeRoot){
 440              printf("ERROR: mkdir security problem - rrdtool is running as "
 441                     "root an no chroot!\n");
 442              return(0);
 443           }
 444 #endif
 445           mkdir(argv[2],0777);
 446           if (errno!=0){
 447              printf("ERROR: %s\n",rrd_strerror(errno));
 448           }
 449           return(0);
 450        }
 451        if (argc>1 && strcmp("ls", argv[1]) == 0){
 452           if (argc>2){
 453              printf("ERROR: invalid parameter count for ls\n");
 454              return(0);
 455           }
 456           if ((curdir=opendir("."))!=NULL){
 457              while((dent=readdir(curdir))!=NULL){
 458                 if (!stat(dent->d_name,&st)){
 459                    if (S_ISDIR(st.st_mode)){
 460                       printf("d %s\n",dent->d_name);
 461                    }
 462                    if (strlen(dent->d_name)>4 && S_ISREG(st.st_mode)){
 463                       if (!strcmp(dent->d_name+NAMLEN(dent)-4,".rrd") ||
 464                           !strcmp(dent->d_name+NAMLEN(dent)-4,".RRD")){
 465                          printf("- %s\n",dent->d_name);
 466                       }
 467                    }
 468                 }
 469              }
 470           }
 471           else{
 472              printf("ERROR: %s\n",rrd_strerror(errno));
 473              return(errno);
 474           }
 475           return(0);
 476        }
 477 #endif /* opendir and readdir */
 478
 479     }
 480     if (argc < 3
 481         || strcmp("help", argv[1]) == 0
 482         || strcmp("--help", argv[1]) == 0
 483         || strcmp("-help", argv[1]) == 0
 484         || strcmp("-?", argv[1]) == 0
 485         || strcmp("-h", argv[1]) == 0 ) {
 486         PrintUsage("");
 487         return 0;
 488     }
 489
 490     if (strcmp("create", argv[1]) == 0)
 491         rrd_create(argc-1, &argv[1]);
 492     else if (strcmp("dump", argv[1]) == 0)
 493         rrd_dump(argc-1, &argv[1]);
 494     else if (strcmp("info", argv[1]) == 0
 495                 || strcmp("updatev", argv[1]) == 0){
 496         info_t *data,*save;
 497         if (strcmp("info",argv[1]) == 0)
 498            data=rrd_info(argc-1, &argv[1]);
 499     else
 500            data=rrd_update_v(argc-1, &argv[1]);
 501         while (data) {
 502             save=data;
 503             printf ("%s = ", data->key);
 504             free(data->key);
 505
 506             switch (data->type) {
 507             case RD_I_VAL:
 508                 if (isnan (data->value.u_val))
 509                     printf("NaN");
 510                 else
 511                     printf ("%0.10e", data->value.u_val);
 512                 break;
 513             case RD_I_CNT:
 514                 printf ("%lu", data->value.u_cnt);
 515                 break;
 516             case RD_I_INT:
 517                 printf ("%d", data->value.u_int);
 518                 break;
 519             case RD_I_STR:
 520                 printf ("\"%s\"", data->value.u_str);
 521                 free(data->value.u_str);
 522                 break;
 523             }
 524             data = data->next;
 525             free(save);
 526             printf ("\n");
 527         }
 528         free(data);
 529     }
 530
 531     else if (strcmp("--version", argv[1]) == 0 ||
 532              strcmp("version", argv[1]) == 0 ||
 533              strcmp("v", argv[1]) == 0 ||
 534              strcmp("-v", argv[1]) == 0  ||
 535              strcmp("-version", argv[1]) == 0  )
 536         printf("RRDtool 1.1.x  Copyright (C) 1997-2004 by Tobias Oetiker <tobi@oetiker.ch>\n");
 537     else if (strcmp("restore", argv[1]) == 0)
 538         rrd_restore(argc-1, &argv[1]);
 539     else if (strcmp("resize", argv[1]) == 0)
 540         rrd_resize(argc-1, &argv[1]);
 541     else if (strcmp("last", argv[1]) == 0)
 542         printf("%ld\n",rrd_last(argc-1, argv[1]));
 543     else if (strcmp("update", argv[1]) == 0)
 544         rrd_update(argc-1, &argv[1]);
 545     else if (strcmp("fetch", argv[1]) == 0) {
 546         time_t        start,end, ti;
 547         unsigned long step, ds_cnt,i,ii;
 548         rrd_value_t   *data,*datai;
 549         char          **ds_namv;
 550         if (rrd_fetch(argc-1, &argv[1],&start,&end,&step,&ds_cnt,&ds_namv,&data) != -1) {
 551             datai=data;
 552             printf("           ");
 553             for (i = 0; i<ds_cnt;i++)
 554                 printf("%20s",ds_namv[i]);
 555             printf ("\n\n");
 556             for (ti = start+step; ti <= end; ti += step){
 557                 printf("%10lu:", ti);
 558                 for (ii = 0; ii < ds_cnt; ii++)
 559                     printf(" %0.10e", *(datai++));
 560                 printf("\n");
 561             }
 562             for (i=0;i<ds_cnt;i++)
 563                   free(ds_namv[i]);
 564             free(ds_namv);
 565             free (data);
 566         }
 567     } else if (strcmp("xport", argv[1]) == 0) {
 568         int xxsize;
 569         unsigned long int j = 0;
 570         time_t        start,end, ti;
 571         unsigned long step, col_cnt,row_cnt;
 572         rrd_value_t   *data,*ptr;
 573         char          **legend_v;
 574         if(rrd_xport(argc-1, &argv[1], &xxsize,&start,&end,&step,&col_cnt,&legend_v,&data) != -1) {
 575           row_cnt = (end-start)/step;
 576           ptr = data;
 577           printf("<?xml version=\"1.0\" encoding=\"%s\"?>\n\n", XML_ENCODING);
 578           printf("<%s>\n", ROOT_TAG);
 579           printf("  <%s>\n", META_TAG);
 580           printf("    <%s>%lu</%s>\n", META_START_TAG, start+step, META_START_TAG);
 581           printf("    <%s>%lu</%s>\n", META_STEP_TAG, step, META_STEP_TAG);
 582           printf("    <%s>%lu</%s>\n", META_END_TAG, end, META_END_TAG);
 583           printf("    <%s>%lu</%s>\n", META_ROWS_TAG, row_cnt, META_ROWS_TAG);
 584           printf("    <%s>%lu</%s>\n", META_COLS_TAG, col_cnt, META_COLS_TAG);
 585           printf("    <%s>\n", LEGEND_TAG);
 586           for (j = 0; j < col_cnt; j++) {
 587             char *entry = NULL;
 588             entry = legend_v[j];
 589             printf("      <%s>%s</%s>\n", LEGEND_ENTRY_TAG, entry, LEGEND_ENTRY_TAG);
 590             free(entry);
 591           }
 592           free(legend_v);
 593           printf("    </%s>\n", LEGEND_TAG);
 594           printf("  </%s>\n", META_TAG);
 595           printf("  <%s>\n", DATA_TAG);
 596           for (ti = start+step; ti <= end; ti += step) {
 597             printf ("    <%s>", DATA_ROW_TAG);
 598             printf ("<%s>%lu</%s>", COL_TIME_TAG, ti, COL_TIME_TAG);
 599             for (j = 0; j < col_cnt; j++) {
 600               rrd_value_t newval = DNAN;
 601               newval = *ptr;
 602               if(isnan(newval)){
 603                 printf("<%s>NaN</%s>", COL_DATA_TAG, COL_DATA_TAG);
 604               } else {
 605                 printf("<%s>%0.10e</%s>", COL_DATA_TAG, newval, COL_DATA_TAG);
 606               };
 607               ptr++;
 608             }
 609             printf("</%s>\n", DATA_ROW_TAG);
 610           }
 611           free(data);
 612           printf("  </%s>\n", DATA_TAG);
 613           printf("</%s>\n", ROOT_TAG);
 614         }
 615     }
 616     else if (strcmp("graph", argv[1]) == 0) {
 617         char **calcpr;
 618 #ifdef notused  /*XXX*/
 619         const char *imgfile = argv[2]; /* rrd_graph changes argv pointer */
 620 #endif
 621         int xsize, ysize;
 622         int i;
 623         int tostdout = (strcmp(argv[2],"-") == 0);
 624         if( rrd_graph(argc-1, &argv[1], &calcpr, &xsize, &ysize, NULL) != -1 ) {
 625             if (!tostdout)
 626                 printf ("%dx%d\n",xsize,ysize);
 627             if (calcpr) {
 628                 for(i=0;calcpr[i];i++){
 629                     if (!tostdout)
 630                         printf("%s\n",calcpr[i]);
 631                     free(calcpr[i]);
 632                 }
 633                 free(calcpr);
 634             }
 635         }
 636
 637     } else if (strcmp("tune", argv[1]) == 0)
 638                 rrd_tune(argc-1, &argv[1]);
 639     else {
 640                 rrd_set_error("unknown function '%s'",argv[1]);
 641     }
 642     if (rrd_test_error()) {
 643         fprintf(out, "ERROR: %s\n",rrd_get_error());
 644         rrd_clear_error();
 645     }
 646     return(0);
 647 }
 648
 649 int CountArgs(char *aLine)
 650 {
 651     int i=0;
 652     int aCount = 0;
 653     int inarg = 0;
 654     while (aLine[i] == ' ') i++;
 655     while (aLine[i] != 0){
 656         if((aLine[i]== ' ') && inarg){
 657             inarg = 0;
 658         }
 659         if((aLine[i]!= ' ') && ! inarg){
 660             inarg = 1;
 661             aCount++;
 662         }
 663         i++;
 664     }
 665     return aCount;
 666 }
 667
 668 /*
 669  * CreateArgs - take a string (aLine) and tokenize
 670  */
 671 int CreateArgs(char *pName, char *aLine, int argc, char **argv)
 672 {
 673     char        *getP, *putP;
 674     char        **pargv = argv;
 675     char        Quote = 0;
 676     int inArg = 0;
 677     int len;
 678
 679     len = strlen(aLine);
 680     /* remove trailing space and newlines */
 681     while (len && aLine[len] <= ' ') {
 682         aLine[len] = 0 ; len--;
 683     }
 684     /* sikp leading blanks */
 685     while (*aLine && *aLine <= ' ') aLine++;
 686
 687     pargv[0] = pName;
 688     argc = 1;
 689     getP = aLine;
 690     putP = aLine;
 691     while (*getP){
 692         switch (*getP) {
 693         case ' ':
 694             if (Quote){
 695                 *(putP++)=*getP;
 696             } else
 697                 if(inArg) {
 698                     *(putP++) = 0;
 699                     inArg = 0;
 700                 }
 701             break;
 702         case '"':
 703         case '\'':
 704             if (Quote != 0) {
 705                 if (Quote == *getP)
 706                     Quote = 0;
 707                 else {
 708                     *(putP++)=*getP;
 709                 }
 710             } else {
 711                 if(!inArg){
 712                     pargv[argc++] = putP;
 713                     inArg=1;
 714                 }
 715                 Quote = *getP;
 716             }
 717             break;
 718         default:
 719             if(!inArg){
 720                 pargv[argc++] = putP;
 721                 inArg=1;
 722             }
 723             *(putP++)=*getP;
 724             break;
 725         }
 726         getP++;
 727     }
 728
 729     *putP = '\0';
 730
 731     if (Quote)
 732         return -1;
 733     else
 734         return argc;
 735 }
 736
 737