src/config.c

   1 #include "redis.h"
   2
   3 /*-----------------------------------------------------------------------------
   4  * Config file parsing
   5  *----------------------------------------------------------------------------*/
   6
   7 int yesnotoi(char *s) {
   8     if (!strcasecmp(s,"yes")) return 1;
   9     else if (!strcasecmp(s,"no")) return 0;
  10     else return -1;
  11 }
  12
  13 void appendServerSaveParams(time_t seconds, int changes) {
  14     server.saveparams = zrealloc(server.saveparams,sizeof(struct saveparam)*(server.saveparamslen+1));
  15     server.saveparams[server.saveparamslen].seconds = seconds;
  16     server.saveparams[server.saveparamslen].changes = changes;
  17     server.saveparamslen++;
  18 }
  19
  20 void resetServerSaveParams() {
  21     zfree(server.saveparams);
  22     server.saveparams = NULL;
  23     server.saveparamslen = 0;
  24 }
  25
  26 /* I agree, this is a very rudimental way to load a configuration...
  27    will improve later if the config gets more complex */
  28 void loadServerConfig(char *filename) {
  29     FILE *fp;
  30     char buf[REDIS_CONFIGLINE_MAX+1], *err = NULL;
  31     int linenum = 0;
  32     sds line = NULL;
  33
  34     if (filename[0] == '-' && filename[1] == '\0')
  35         fp = stdin;
  36     else {
  37         if ((fp = fopen(filename,"r")) == NULL) {
  38             redisLog(REDIS_WARNING, "Fatal error, can't open config file '%s'", filename);
  39             exit(1);
  40         }
  41     }
  42
  43     while(fgets(buf,REDIS_CONFIGLINE_MAX+1,fp) != NULL) {
  44         sds *argv;
  45         int argc, j;
  46
  47         linenum++;
  48         line = sdsnew(buf);
  49         line = sdstrim(line," \t\r\n");
  50
  51         /* Skip comments and blank lines*/
  52         if (line[0] == '#' || line[0] == '\0') {
  53             sdsfree(line);
  54             continue;
  55         }
  56
  57         /* Split into arguments */
  58         argv = sdssplitargs(line,&argc);
  59         sdstolower(argv[0]);
  60
  61         /* Execute config directives */
  62         if (!strcasecmp(argv[0],"timeout") && argc == 2) {
  63             server.maxidletime = atoi(argv[1]);
  64             if (server.maxidletime < 0) {
  65                 err = "Invalid timeout value"; goto loaderr;
  66             }
  67         } else if (!strcasecmp(argv[0],"port") && argc == 2) {
  68             server.port = atoi(argv[1]);
  69             if (server.port < 0 || server.port > 65535) {
  70                 err = "Invalid port"; goto loaderr;
  71             }
  72         } else if (!strcasecmp(argv[0],"bind") && argc == 2) {
  73             server.bindaddr = zstrdup(argv[1]);
  74         } else if (!strcasecmp(argv[0],"unixsocket") && argc == 2) {
  75             server.unixsocket = zstrdup(argv[1]);
  76         } else if (!strcasecmp(argv[0],"unixsocketperm") && argc == 2) {
  77             errno = 0;
  78             server.unixsocketperm = (mode_t)strtol(argv[1], NULL, 8);
  79             if (errno || server.unixsocketperm > 0777) {
  80                 err = "Invalid socket file permissions"; goto loaderr;
  81             }
  82         } else if (!strcasecmp(argv[0],"save") && argc == 3) {
  83             int seconds = atoi(argv[1]);
  84             int changes = atoi(argv[2]);
  85             if (seconds < 1 || changes < 0) {
  86                 err = "Invalid save parameters"; goto loaderr;
  87             }
  88             appendServerSaveParams(seconds,changes);
  89         } else if (!strcasecmp(argv[0],"dir") && argc == 2) {
  90             if (chdir(argv[1]) == -1) {
  91                 redisLog(REDIS_WARNING,"Can't chdir to '%s': %s",
  92                     argv[1], strerror(errno));
  93                 exit(1);
  94             }
  95         } else if (!strcasecmp(argv[0],"loglevel") && argc == 2) {
  96             if (!strcasecmp(argv[1],"debug")) server.verbosity = REDIS_DEBUG;
  97             else if (!strcasecmp(argv[1],"verbose")) server.verbosity = REDIS_VERBOSE;
  98             else if (!strcasecmp(argv[1],"notice")) server.verbosity = REDIS_NOTICE;
  99             else if (!strcasecmp(argv[1],"warning")) server.verbosity = REDIS_WARNING;
 100             else {
 101                 err = "Invalid log level. Must be one of debug, notice, warning";
 102                 goto loaderr;
 103             }
 104         } else if (!strcasecmp(argv[0],"logfile") && argc == 2) {
 105             FILE *logfp;
 106
 107             server.logfile = zstrdup(argv[1]);
 108             if (!strcasecmp(server.logfile,"stdout")) {
 109                 zfree(server.logfile);
 110                 server.logfile = NULL;
 111             }
 112             if (server.logfile) {
 113                 /* Test if we are able to open the file. The server will not
 114                  * be able to abort just for this problem later... */
 115                 logfp = fopen(server.logfile,"a");
 116                 if (logfp == NULL) {
 117                     err = sdscatprintf(sdsempty(),
 118                         "Can't open the log file: %s", strerror(errno));
 119                     goto loaderr;
 120                 }
 121                 fclose(logfp);
 122             }
 123         } else if (!strcasecmp(argv[0],"syslog-enabled") && argc == 2) {
 124             if ((server.syslog_enabled = yesnotoi(argv[1])) == -1) {
 125                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 126             }
 127         } else if (!strcasecmp(argv[0],"syslog-ident") && argc == 2) {
 128             if (server.syslog_ident) zfree(server.syslog_ident);
 129             server.syslog_ident = zstrdup(argv[1]);
 130         } else if (!strcasecmp(argv[0],"syslog-facility") && argc == 2) {
 131             struct {
 132                 const char     *name;
 133                 const int       value;
 134             } validSyslogFacilities[] = {
 135                 {"user",    LOG_USER},
 136                 {"local0",  LOG_LOCAL0},
 137                 {"local1",  LOG_LOCAL1},
 138                 {"local2",  LOG_LOCAL2},
 139                 {"local3",  LOG_LOCAL3},
 140                 {"local4",  LOG_LOCAL4},
 141                 {"local5",  LOG_LOCAL5},
 142                 {"local6",  LOG_LOCAL6},
 143                 {"local7",  LOG_LOCAL7},
 144                 {NULL, 0}
 145             };
 146             int i;
 147
 148             for (i = 0; validSyslogFacilities[i].name; i++) {
 149                 if (!strcasecmp(validSyslogFacilities[i].name, argv[1])) {
 150                     server.syslog_facility = validSyslogFacilities[i].value;
 151                     break;
 152                 }
 153             }
 154
 155             if (!validSyslogFacilities[i].name) {
 156                 err = "Invalid log facility. Must be one of USER or between LOCAL0-LOCAL7";
 157                 goto loaderr;
 158             }
 159         } else if (!strcasecmp(argv[0],"databases") && argc == 2) {
 160             server.dbnum = atoi(argv[1]);
 161             if (server.dbnum < 1) {
 162                 err = "Invalid number of databases"; goto loaderr;
 163             }
 164         } else if (!strcasecmp(argv[0],"include") && argc == 2) {
 165             loadServerConfig(argv[1]);
 166         } else if (!strcasecmp(argv[0],"maxclients") && argc == 2) {
 167             server.maxclients = atoi(argv[1]);
 168         } else if (!strcasecmp(argv[0],"maxmemory") && argc == 2) {
 169             server.maxmemory = memtoll(argv[1],NULL);
 170         } else if (!strcasecmp(argv[0],"maxmemory-policy") && argc == 2) {
 171             if (!strcasecmp(argv[1],"volatile-lru")) {
 172                 server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
 173             } else if (!strcasecmp(argv[1],"volatile-random")) {
 174                 server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
 175             } else if (!strcasecmp(argv[1],"volatile-ttl")) {
 176                 server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
 177             } else if (!strcasecmp(argv[1],"allkeys-lru")) {
 178                 server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
 179             } else if (!strcasecmp(argv[1],"allkeys-random")) {
 180                 server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
 181             } else if (!strcasecmp(argv[1],"noeviction")) {
 182                 server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
 183             } else {
 184                 err = "Invalid maxmemory policy";
 185                 goto loaderr;
 186             }
 187         } else if (!strcasecmp(argv[0],"maxmemory-samples") && argc == 2) {
 188             server.maxmemory_samples = atoi(argv[1]);
 189             if (server.maxmemory_samples <= 0) {
 190                 err = "maxmemory-samples must be 1 or greater";
 191                 goto loaderr;
 192             }
 193         } else if (!strcasecmp(argv[0],"slaveof") && argc == 3) {
 194             server.masterhost = sdsnew(argv[1]);
 195             server.masterport = atoi(argv[2]);
 196             server.replstate = REDIS_REPL_CONNECT;
 197         } else if (!strcasecmp(argv[0],"masterauth") && argc == 2) {
 198                 server.masterauth = zstrdup(argv[1]);
 199         } else if (!strcasecmp(argv[0],"slave-serve-stale-data") && argc == 2) {
 200             if ((server.repl_serve_stale_data = yesnotoi(argv[1])) == -1) {
 201                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 202             }
 203         } else if (!strcasecmp(argv[0],"glueoutputbuf")) {
 204             redisLog(REDIS_WARNING, "Deprecated configuration directive: \"%s\"", argv[0]);
 205         } else if (!strcasecmp(argv[0],"rdbcompression") && argc == 2) {
 206             if ((server.rdbcompression = yesnotoi(argv[1])) == -1) {
 207                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 208             }
 209         } else if (!strcasecmp(argv[0],"activerehashing") && argc == 2) {
 210             if ((server.activerehashing = yesnotoi(argv[1])) == -1) {
 211                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 212             }
 213         } else if (!strcasecmp(argv[0],"daemonize") && argc == 2) {
 214             if ((server.daemonize = yesnotoi(argv[1])) == -1) {
 215                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 216             }
 217         } else if (!strcasecmp(argv[0],"appendonly") && argc == 2) {
 218             if ((server.appendonly = yesnotoi(argv[1])) == -1) {
 219                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 220             }
 221         } else if (!strcasecmp(argv[0],"appendfilename") && argc == 2) {
 222             zfree(server.appendfilename);
 223             server.appendfilename = zstrdup(argv[1]);
 224         } else if (!strcasecmp(argv[0],"no-appendfsync-on-rewrite")
 225                    && argc == 2) {
 226             if ((server.no_appendfsync_on_rewrite= yesnotoi(argv[1])) == -1) {
 227                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 228             }
 229         } else if (!strcasecmp(argv[0],"appendfsync") && argc == 2) {
 230             if (!strcasecmp(argv[1],"no")) {
 231                 server.appendfsync = APPENDFSYNC_NO;
 232             } else if (!strcasecmp(argv[1],"always")) {
 233                 server.appendfsync = APPENDFSYNC_ALWAYS;
 234             } else if (!strcasecmp(argv[1],"everysec")) {
 235                 server.appendfsync = APPENDFSYNC_EVERYSEC;
 236             } else {
 237                 err = "argument must be 'no', 'always' or 'everysec'";
 238                 goto loaderr;
 239             }
 240         } else if (!strcasecmp(argv[0],"auto-aof-rewrite-percentage") &&
 241                    argc == 2)
 242         {
 243             server.auto_aofrewrite_perc = atoi(argv[1]);
 244             if (server.auto_aofrewrite_perc < 0) {
 245                 err = "Invalid negative percentage for AOF auto rewrite";
 246                 goto loaderr;
 247             }
 248         } else if (!strcasecmp(argv[0],"auto-aof-rewrite-min-size") &&
 249                    argc == 2)
 250         {
 251             server.auto_aofrewrite_min_size = memtoll(argv[1],NULL);
 252         } else if (!strcasecmp(argv[0],"requirepass") && argc == 2) {
 253             server.requirepass = zstrdup(argv[1]);
 254         } else if (!strcasecmp(argv[0],"pidfile") && argc == 2) {
 255             zfree(server.pidfile);
 256             server.pidfile = zstrdup(argv[1]);
 257         } else if (!strcasecmp(argv[0],"dbfilename") && argc == 2) {
 258             zfree(server.dbfilename);
 259             server.dbfilename = zstrdup(argv[1]);
 260         } else if (!strcasecmp(argv[0],"hash-max-zipmap-entries") && argc == 2) {
 261             server.hash_max_zipmap_entries = memtoll(argv[1], NULL);
 262         } else if (!strcasecmp(argv[0],"hash-max-zipmap-value") && argc == 2) {
 263             server.hash_max_zipmap_value = memtoll(argv[1], NULL);
 264         } else if (!strcasecmp(argv[0],"list-max-ziplist-entries") && argc == 2){
 265             server.list_max_ziplist_entries = memtoll(argv[1], NULL);
 266         } else if (!strcasecmp(argv[0],"list-max-ziplist-value") && argc == 2) {
 267             server.list_max_ziplist_value = memtoll(argv[1], NULL);
 268         } else if (!strcasecmp(argv[0],"set-max-intset-entries") && argc == 2) {
 269             server.set_max_intset_entries = memtoll(argv[1], NULL);
 270         } else if (!strcasecmp(argv[0],"zset-max-ziplist-entries") && argc == 2) {
 271             server.zset_max_ziplist_entries = memtoll(argv[1], NULL);
 272         } else if (!strcasecmp(argv[0],"zset-max-ziplist-value") && argc == 2) {
 273             server.zset_max_ziplist_value = memtoll(argv[1], NULL);
 274         } else if (!strcasecmp(argv[0],"rename-command") && argc == 3) {
 275             struct redisCommand *cmd = lookupCommand(argv[1]);
 276             int retval;
 277
 278             if (!cmd) {
 279                 err = "No such command in rename-command";
 280                 goto loaderr;
 281             }
 282
 283             /* If the target command name is the emtpy string we just
 284              * remove it from the command table. */
 285             retval = dictDelete(server.commands, argv[1]);
 286             redisAssert(retval == DICT_OK);
 287
 288             /* Otherwise we re-add the command under a different name. */
 289             if (sdslen(argv[2]) != 0) {
 290                 sds copy = sdsdup(argv[2]);
 291
 292                 retval = dictAdd(server.commands, copy, cmd);
 293                 if (retval != DICT_OK) {
 294                     sdsfree(copy);
 295                     err = "Target command name already exists"; goto loaderr;
 296                 }
 297             }
 298         } else if (!strcasecmp(argv[0],"cluster-enabled") && argc == 2) {
 299             if ((server.cluster_enabled = yesnotoi(argv[1])) == -1) {
 300                 err = "argument must be 'yes' or 'no'"; goto loaderr;
 301             }
 302         } else if (!strcasecmp(argv[0],"cluster-config-file") && argc == 2) {
 303             zfree(server.cluster.configfile);
 304             server.cluster.configfile = zstrdup(argv[1]);
 305         } else if (!strcasecmp(argv[0],"lua-time-limit") && argc == 2) {
 306             server.lua_time_limit = strtoll(argv[1],NULL,10);
 307         } else if (!strcasecmp(argv[0],"slowlog-log-slower-than") &&
 308                    argc == 2)
 309         {
 310             server.slowlog_log_slower_than = strtoll(argv[1],NULL,10);
 311         } else if (!strcasecmp(argv[0],"slowlog-max-len") && argc == 2) {
 312             server.slowlog_max_len = strtoll(argv[1],NULL,10);
 313         } else {
 314             err = "Bad directive or wrong number of arguments"; goto loaderr;
 315         }
 316         for (j = 0; j < argc; j++)
 317             sdsfree(argv[j]);
 318         zfree(argv);
 319         sdsfree(line);
 320     }
 321     if (fp != stdin) fclose(fp);
 322     return;
 323
 324 loaderr:
 325     fprintf(stderr, "\n*** FATAL CONFIG FILE ERROR ***\n");
 326     fprintf(stderr, "Reading the configuration file, at line %d\n", linenum);
 327     fprintf(stderr, ">>> '%s'\n", line);
 328     fprintf(stderr, "%s\n", err);
 329     exit(1);
 330 }
 331
 332 /*-----------------------------------------------------------------------------
 333  * CONFIG command for remote configuration
 334  *----------------------------------------------------------------------------*/
 335
 336 void configSetCommand(redisClient *c) {
 337     robj *o;
 338     long long ll;
 339     redisAssertWithInfo(c,c->argv[2],c->argv[2]->encoding == REDIS_ENCODING_RAW);
 340     redisAssertWithInfo(c,c->argv[2],c->argv[3]->encoding == REDIS_ENCODING_RAW);
 341     o = c->argv[3];
 342
 343     if (!strcasecmp(c->argv[2]->ptr,"dbfilename")) {
 344         zfree(server.dbfilename);
 345         server.dbfilename = zstrdup(o->ptr);
 346     } else if (!strcasecmp(c->argv[2]->ptr,"requirepass")) {
 347         zfree(server.requirepass);
 348         server.requirepass = zstrdup(o->ptr);
 349     } else if (!strcasecmp(c->argv[2]->ptr,"masterauth")) {
 350         zfree(server.masterauth);
 351         server.masterauth = zstrdup(o->ptr);
 352     } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory")) {
 353         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
 354             ll < 0) goto badfmt;
 355         server.maxmemory = ll;
 356         if (server.maxmemory) freeMemoryIfNeeded();
 357     } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-policy")) {
 358         if (!strcasecmp(o->ptr,"volatile-lru")) {
 359             server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
 360         } else if (!strcasecmp(o->ptr,"volatile-random")) {
 361             server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
 362         } else if (!strcasecmp(o->ptr,"volatile-ttl")) {
 363             server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
 364         } else if (!strcasecmp(o->ptr,"allkeys-lru")) {
 365             server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
 366         } else if (!strcasecmp(o->ptr,"allkeys-random")) {
 367             server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
 368         } else if (!strcasecmp(o->ptr,"noeviction")) {
 369             server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
 370         } else {
 371             goto badfmt;
 372         }
 373     } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-samples")) {
 374         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
 375             ll <= 0) goto badfmt;
 376         server.maxmemory_samples = ll;
 377     } else if (!strcasecmp(c->argv[2]->ptr,"timeout")) {
 378         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
 379             ll < 0 || ll > LONG_MAX) goto badfmt;
 380         server.maxidletime = ll;
 381     } else if (!strcasecmp(c->argv[2]->ptr,"appendfsync")) {
 382         if (!strcasecmp(o->ptr,"no")) {
 383             server.appendfsync = APPENDFSYNC_NO;
 384         } else if (!strcasecmp(o->ptr,"everysec")) {
 385             server.appendfsync = APPENDFSYNC_EVERYSEC;
 386         } else if (!strcasecmp(o->ptr,"always")) {
 387             server.appendfsync = APPENDFSYNC_ALWAYS;
 388         } else {
 389             goto badfmt;
 390         }
 391     } else if (!strcasecmp(c->argv[2]->ptr,"no-appendfsync-on-rewrite")) {
 392         int yn = yesnotoi(o->ptr);
 393
 394         if (yn == -1) goto badfmt;
 395         server.no_appendfsync_on_rewrite = yn;
 396     } else if (!strcasecmp(c->argv[2]->ptr,"appendonly")) {
 397         int old = server.appendonly;
 398         int new = yesnotoi(o->ptr);
 399
 400         if (new == -1) goto badfmt;
 401         if (old != new) {
 402             if (new == 0) {
 403                 stopAppendOnly();
 404             } else {
 405                 if (startAppendOnly() == REDIS_ERR) {
 406                     addReplyError(c,
 407                         "Unable to turn on AOF. Check server logs.");
 408                     return;
 409                 }
 410             }
 411         }
 412     } else if (!strcasecmp(c->argv[2]->ptr,"auto-aof-rewrite-percentage")) {
 413         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 414         server.auto_aofrewrite_perc = ll;
 415     } else if (!strcasecmp(c->argv[2]->ptr,"auto-aof-rewrite-min-size")) {
 416         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 417         server.auto_aofrewrite_min_size = ll;
 418     } else if (!strcasecmp(c->argv[2]->ptr,"save")) {
 419         int vlen, j;
 420         sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);
 421
 422         /* Perform sanity check before setting the new config:
 423          * - Even number of args
 424          * - Seconds >= 1, changes >= 0 */
 425         if (vlen & 1) {
 426             sdsfreesplitres(v,vlen);
 427             goto badfmt;
 428         }
 429         for (j = 0; j < vlen; j++) {
 430             char *eptr;
 431             long val;
 432
 433             val = strtoll(v[j], &eptr, 10);
 434             if (eptr[0] != '\0' ||
 435                 ((j & 1) == 0 && val < 1) ||
 436                 ((j & 1) == 1 && val < 0)) {
 437                 sdsfreesplitres(v,vlen);
 438                 goto badfmt;
 439             }
 440         }
 441         /* Finally set the new config */
 442         resetServerSaveParams();
 443         for (j = 0; j < vlen; j += 2) {
 444             time_t seconds;
 445             int changes;
 446
 447             seconds = strtoll(v[j],NULL,10);
 448             changes = strtoll(v[j+1],NULL,10);
 449             appendServerSaveParams(seconds, changes);
 450         }
 451         sdsfreesplitres(v,vlen);
 452     } else if (!strcasecmp(c->argv[2]->ptr,"slave-serve-stale-data")) {
 453         int yn = yesnotoi(o->ptr);
 454
 455         if (yn == -1) goto badfmt;
 456         server.repl_serve_stale_data = yn;
 457     } else if (!strcasecmp(c->argv[2]->ptr,"dir")) {
 458         if (chdir((char*)o->ptr) == -1) {
 459             addReplyErrorFormat(c,"Changing directory: %s", strerror(errno));
 460             return;
 461         }
 462     } else if (!strcasecmp(c->argv[2]->ptr,"hash-max-zipmap-entries")) {
 463         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 464         server.hash_max_zipmap_entries = ll;
 465     } else if (!strcasecmp(c->argv[2]->ptr,"hash-max-zipmap-value")) {
 466         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 467         server.hash_max_zipmap_value = ll;
 468     } else if (!strcasecmp(c->argv[2]->ptr,"list-max-ziplist-entries")) {
 469         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 470         server.list_max_ziplist_entries = ll;
 471     } else if (!strcasecmp(c->argv[2]->ptr,"list-max-ziplist-value")) {
 472         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 473         server.list_max_ziplist_value = ll;
 474     } else if (!strcasecmp(c->argv[2]->ptr,"set-max-intset-entries")) {
 475         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 476         server.set_max_intset_entries = ll;
 477     } else if (!strcasecmp(c->argv[2]->ptr,"zset-max-ziplist-entries")) {
 478         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 479         server.zset_max_ziplist_entries = ll;
 480     } else if (!strcasecmp(c->argv[2]->ptr,"zset-max-ziplist-value")) {
 481         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 482         server.zset_max_ziplist_value = ll;
 483     } else if (!strcasecmp(c->argv[2]->ptr,"lua-time-limit")) {
 484         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 485         server.lua_time_limit = ll;
 486     } else if (!strcasecmp(c->argv[2]->ptr,"slowlog-log-slower-than")) {
 487         if (getLongLongFromObject(o,&ll) == REDIS_ERR) goto badfmt;
 488         server.slowlog_log_slower_than = ll;
 489     } else if (!strcasecmp(c->argv[2]->ptr,"slowlog-max-len")) {
 490         if (getLongLongFromObject(o,&ll) == REDIS_ERR || ll < 0) goto badfmt;
 491         server.slowlog_max_len = (unsigned)ll;
 492     } else if (!strcasecmp(c->argv[2]->ptr,"loglevel")) {
 493         if (!strcasecmp(o->ptr,"warning")) {
 494             server.verbosity = REDIS_WARNING;
 495         } else if (!strcasecmp(o->ptr,"notice")) {
 496             server.verbosity = REDIS_NOTICE;
 497         } else if (!strcasecmp(o->ptr,"verbose")) {
 498             server.verbosity = REDIS_VERBOSE;
 499         } else if (!strcasecmp(o->ptr,"debug")) {
 500             server.verbosity = REDIS_DEBUG;
 501         } else {
 502             goto badfmt;
 503         }
 504     } else {
 505         addReplyErrorFormat(c,"Unsupported CONFIG parameter: %s",
 506             (char*)c->argv[2]->ptr);
 507         return;
 508     }
 509     addReply(c,shared.ok);
 510     return;
 511
 512 badfmt: /* Bad format errors */
 513     addReplyErrorFormat(c,"Invalid argument '%s' for CONFIG SET '%s'",
 514             (char*)o->ptr,
 515             (char*)c->argv[2]->ptr);
 516 }
 517
 518 void configGetCommand(redisClient *c) {
 519     robj *o = c->argv[2];
 520     void *replylen = addDeferredMultiBulkLength(c);
 521     char *pattern = o->ptr;
 522     char buf[128];
 523     int matches = 0;
 524     redisAssertWithInfo(c,o,o->encoding == REDIS_ENCODING_RAW);
 525
 526     if (stringmatch(pattern,"dir",0)) {
 527         char buf[1024];
 528
 529         if (getcwd(buf,sizeof(buf)) == NULL)
 530             buf[0] = '\0';
 531
 532         addReplyBulkCString(c,"dir");
 533         addReplyBulkCString(c,buf);
 534         matches++;
 535     }
 536     if (stringmatch(pattern,"dbfilename",0)) {
 537         addReplyBulkCString(c,"dbfilename");
 538         addReplyBulkCString(c,server.dbfilename);
 539         matches++;
 540     }
 541     if (stringmatch(pattern,"requirepass",0)) {
 542         addReplyBulkCString(c,"requirepass");
 543         addReplyBulkCString(c,server.requirepass);
 544         matches++;
 545     }
 546     if (stringmatch(pattern,"masterauth",0)) {
 547         addReplyBulkCString(c,"masterauth");
 548         addReplyBulkCString(c,server.masterauth);
 549         matches++;
 550     }
 551     if (stringmatch(pattern,"maxmemory",0)) {
 552         ll2string(buf,sizeof(buf),server.maxmemory);
 553         addReplyBulkCString(c,"maxmemory");
 554         addReplyBulkCString(c,buf);
 555         matches++;
 556     }
 557     if (stringmatch(pattern,"maxmemory-policy",0)) {
 558         char *s;
 559
 560         switch(server.maxmemory_policy) {
 561         case REDIS_MAXMEMORY_VOLATILE_LRU: s = "volatile-lru"; break;
 562         case REDIS_MAXMEMORY_VOLATILE_TTL: s = "volatile-ttl"; break;
 563         case REDIS_MAXMEMORY_VOLATILE_RANDOM: s = "volatile-random"; break;
 564         case REDIS_MAXMEMORY_ALLKEYS_LRU: s = "allkeys-lru"; break;
 565         case REDIS_MAXMEMORY_ALLKEYS_RANDOM: s = "allkeys-random"; break;
 566         case REDIS_MAXMEMORY_NO_EVICTION: s = "noeviction"; break;
 567         default: s = "unknown"; break; /* too harmless to panic */
 568         }
 569         addReplyBulkCString(c,"maxmemory-policy");
 570         addReplyBulkCString(c,s);
 571         matches++;
 572     }
 573     if (stringmatch(pattern,"maxmemory-samples",0)) {
 574         ll2string(buf,sizeof(buf),server.maxmemory_samples);
 575         addReplyBulkCString(c,"maxmemory-samples");
 576         addReplyBulkCString(c,buf);
 577         matches++;
 578     }
 579     if (stringmatch(pattern,"timeout",0)) {
 580         ll2string(buf,sizeof(buf),server.maxidletime);
 581         addReplyBulkCString(c,"timeout");
 582         addReplyBulkCString(c,buf);
 583         matches++;
 584     }
 585     if (stringmatch(pattern,"appendonly",0)) {
 586         addReplyBulkCString(c,"appendonly");
 587         addReplyBulkCString(c,server.appendonly ? "yes" : "no");
 588         matches++;
 589     }
 590     if (stringmatch(pattern,"no-appendfsync-on-rewrite",0)) {
 591         addReplyBulkCString(c,"no-appendfsync-on-rewrite");
 592         addReplyBulkCString(c,server.no_appendfsync_on_rewrite ? "yes" : "no");
 593         matches++;
 594     }
 595     if (stringmatch(pattern,"appendfsync",0)) {
 596         char *policy;
 597
 598         switch(server.appendfsync) {
 599         case APPENDFSYNC_NO: policy = "no"; break;
 600         case APPENDFSYNC_EVERYSEC: policy = "everysec"; break;
 601         case APPENDFSYNC_ALWAYS: policy = "always"; break;
 602         default: policy = "unknown"; break; /* too harmless to panic */
 603         }
 604         addReplyBulkCString(c,"appendfsync");
 605         addReplyBulkCString(c,policy);
 606         matches++;
 607     }
 608     if (stringmatch(pattern,"save",0)) {
 609         sds buf = sdsempty();
 610         int j;
 611
 612         for (j = 0; j < server.saveparamslen; j++) {
 613             buf = sdscatprintf(buf,"%ld %d",
 614                     server.saveparams[j].seconds,
 615                     server.saveparams[j].changes);
 616             if (j != server.saveparamslen-1)
 617                 buf = sdscatlen(buf," ",1);
 618         }
 619         addReplyBulkCString(c,"save");
 620         addReplyBulkCString(c,buf);
 621         sdsfree(buf);
 622         matches++;
 623     }
 624     if (stringmatch(pattern,"auto-aof-rewrite-percentage",0)) {
 625         addReplyBulkCString(c,"auto-aof-rewrite-percentage");
 626         addReplyBulkLongLong(c,server.auto_aofrewrite_perc);
 627         matches++;
 628     }
 629     if (stringmatch(pattern,"auto-aof-rewrite-min-size",0)) {
 630         addReplyBulkCString(c,"auto-aof-rewrite-min-size");
 631         addReplyBulkLongLong(c,server.auto_aofrewrite_min_size);
 632         matches++;
 633     }
 634     if (stringmatch(pattern,"slave-serve-stale-data",0)) {
 635         addReplyBulkCString(c,"slave-serve-stale-data");
 636         addReplyBulkCString(c,server.repl_serve_stale_data ? "yes" : "no");
 637         matches++;
 638     }
 639     if (stringmatch(pattern,"hash-max-zipmap-entries",0)) {
 640         addReplyBulkCString(c,"hash-max-zipmap-entries");
 641         addReplyBulkLongLong(c,server.hash_max_zipmap_entries);
 642         matches++;
 643     }
 644     if (stringmatch(pattern,"hash-max-zipmap-value",0)) {
 645         addReplyBulkCString(c,"hash-max-zipmap-value");
 646         addReplyBulkLongLong(c,server.hash_max_zipmap_value);
 647         matches++;
 648     }
 649     if (stringmatch(pattern,"list-max-ziplist-entries",0)) {
 650         addReplyBulkCString(c,"list-max-ziplist-entries");
 651         addReplyBulkLongLong(c,server.list_max_ziplist_entries);
 652         matches++;
 653     }
 654     if (stringmatch(pattern,"list-max-ziplist-value",0)) {
 655         addReplyBulkCString(c,"list-max-ziplist-value");
 656         addReplyBulkLongLong(c,server.list_max_ziplist_value);
 657         matches++;
 658     }
 659     if (stringmatch(pattern,"set-max-intset-entries",0)) {
 660         addReplyBulkCString(c,"set-max-intset-entries");
 661         addReplyBulkLongLong(c,server.set_max_intset_entries);
 662         matches++;
 663     }
 664     if (stringmatch(pattern,"zset-max-ziplist-entries",0)) {
 665         addReplyBulkCString(c,"zset-max-ziplist-entries");
 666         addReplyBulkLongLong(c,server.zset_max_ziplist_entries);
 667         matches++;
 668     }
 669     if (stringmatch(pattern,"zset-max-ziplist-value",0)) {
 670         addReplyBulkCString(c,"zset-max-ziplist-value");
 671         addReplyBulkLongLong(c,server.zset_max_ziplist_value);
 672         matches++;
 673     }
 674     if (stringmatch(pattern,"lua-time-limit",0)) {
 675         addReplyBulkCString(c,"lua-time-limit");
 676         addReplyBulkLongLong(c,server.lua_time_limit);
 677         matches++;
 678     }
 679     if (stringmatch(pattern,"slowlog-log-slower-than",0)) {
 680         addReplyBulkCString(c,"slowlog-log-slower-than");
 681         addReplyBulkLongLong(c,server.slowlog_log_slower_than);
 682         matches++;
 683     }
 684     if (stringmatch(pattern,"slowlog-max-len",0)) {
 685         addReplyBulkCString(c,"slowlog-max-len");
 686         addReplyBulkLongLong(c,server.slowlog_max_len);
 687         matches++;
 688     }
 689     if (stringmatch(pattern,"loglevel",0)) {
 690         char *s;
 691
 692         switch(server.verbosity) {
 693         case REDIS_WARNING: s = "warning"; break;
 694         case REDIS_VERBOSE: s = "verbose"; break;
 695         case REDIS_NOTICE: s = "notice"; break;
 696         case REDIS_DEBUG: s = "debug"; break;
 697         default: s = "unknown"; break; /* too harmless to panic */
 698         }
 699         addReplyBulkCString(c,"loglevel");
 700         addReplyBulkCString(c,s);
 701         matches++;
 702     }
 703     setDeferredMultiBulkLength(c,replylen,matches*2);
 704 }
 705
 706 void configCommand(redisClient *c) {
 707     if (!strcasecmp(c->argv[1]->ptr,"set")) {
 708         if (c->argc != 4) goto badarity;
 709         configSetCommand(c);
 710     } else if (!strcasecmp(c->argv[1]->ptr,"get")) {
 711         if (c->argc != 3) goto badarity;
 712         configGetCommand(c);
 713     } else if (!strcasecmp(c->argv[1]->ptr,"resetstat")) {
 714         if (c->argc != 2) goto badarity;
 715         server.stat_keyspace_hits = 0;
 716         server.stat_keyspace_misses = 0;
 717         server.stat_numcommands = 0;
 718         server.stat_numconnections = 0;
 719         server.stat_expiredkeys = 0;
 720         resetCommandTableStats();
 721         addReply(c,shared.ok);
 722     } else {
 723         addReplyError(c,
 724             "CONFIG subcommand must be one of GET, SET, RESETSTAT");
 725     }
 726     return;
 727
 728 badarity:
 729     addReplyErrorFormat(c,"Wrong number of arguments for CONFIG %s",
 730         (char*) c->argv[1]->ptr);
 731 }