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