git.m6w6.name Git - awesomized/libmemcached/blob - clients/utilities.c

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11 #include "config.h"
  12
  13 #include <stdio.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include "utilities.h"
  17
  18
  19 long int timedif(struct timeval a, struct timeval b)
  20 {
  21   long us, s;
  22
  23   us = (int)(a.tv_usec - b.tv_usec);
  24   us /= 1000;
  25   s = (int)(a.tv_sec - b.tv_sec);
  26   s *= 1000;
  27   return s + us;
  28 }
  29
  30 void version_command(const char *command_name)
  31 {
  32   printf("%s v%u.%u\n", command_name, 1U, 0U);
  33   exit(0);
  34 }
  35
  36 static const char *lookup_help(memcached_options option)
  37 {
  38   switch (option)
  39   {
  40   case OPT_SERVERS: return("List which servers you wish to connect to.");
  41   case OPT_VERSION: return("Display the version of the application and then exit.");
  42   case OPT_HELP: return("Display this message and then exit.");
  43   case OPT_VERBOSE: return("Give more details on the progression of the application.");
  44   case OPT_DEBUG: return("Provide output only useful for debugging.");
  45   case OPT_FLAG: return("Provide flag information for storage operation.");
  46   case OPT_EXPIRE: return("Set the expire option for the object.");
  47   case OPT_SET: return("Use set command with memcached when storing.");
  48   case OPT_REPLACE: return("Use replace command with memcached when storing.");
  49   case OPT_ADD: return("Use add command with memcached when storing.");
  50   case OPT_SLAP_EXECUTE_NUMBER: return("Number of times to execute the given test.");
  51   case OPT_SLAP_INITIAL_LOAD: return("Number of key pairs to load before executing tests.");
  52   case OPT_SLAP_TEST: return("Test to run (currently \"get\" or \"set\").");
  53   case OPT_SLAP_CONCURRENCY: return("Number of users to simulate with load.");
  54   case OPT_SLAP_NON_BLOCK: return("Set TCP up to use non-blocking IO.");
  55   case OPT_SLAP_TCP_NODELAY: return("Set TCP socket up to use nodelay.");
  56   case OPT_FLUSH: return("Flush servers before running tests.");
  57   case OPT_HASH: return("Select hash type.");
  58   case OPT_BINARY: return("Switch to binary protocol.");
  59   case OPT_ANALYZE: return("Analyze the provided servers.");
  60   case OPT_UDP: return("Use UDP protocol when communicating with server.");
  61   case OPT_USERNAME: return "Username to use for SASL authentication";
  62   case OPT_PASSWD: return "Password to use for SASL authentication";
  63   case OPT_FILE: return "Path to file in which to save result";
  64   default: WATCHPOINT_ASSERT(0);
  65   };
  66
  67   WATCHPOINT_ASSERT(0);
  68   return "forgot to document this function :)";
  69 }
  70
  71 void help_command(const char *command_name, const char *description,
  72                   const struct option *long_options,
  73                   memcached_programs_help_st *options __attribute__((unused)))
  74 {
  75   unsigned int x;
  76
  77   printf("%s v%u.%u\n\n", command_name, 1U, 0U);
  78   printf("\t%s\n\n", description);
  79   printf("Current options. A '=' means the option takes a value.\n\n");
  80
  81   for (x= 0; long_options[x].name; x++)
  82   {
  83     const char *help_message;
  84
  85     printf("\t --%s%c\n", long_options[x].name,
  86            long_options[x].has_arg ? '=' : ' ');
  87     if ((help_message= lookup_help(long_options[x].val)))
  88       printf("\t\t%s\n", help_message);
  89   }
  90
  91   printf("\n");
  92   exit(0);
  93 }
  94
  95 void process_hash_option(memcached_st *memc, char *opt_hash)
  96 {
  97   uint64_t set;
  98   memcached_return_t rc;
  99
 100   if (opt_hash == NULL)
 101     return;
 102
 103   set= MEMCACHED_HASH_DEFAULT; /* Just here to solve warning */
 104   if (!strcasecmp(opt_hash, "CRC"))
 105     set= MEMCACHED_HASH_CRC;
 106   else if (!strcasecmp(opt_hash, "FNV1_64"))
 107     set= MEMCACHED_HASH_FNV1_64;
 108   else if (!strcasecmp(opt_hash, "FNV1A_64"))
 109     set= MEMCACHED_HASH_FNV1A_64;
 110   else if (!strcasecmp(opt_hash, "FNV1_32"))
 111     set= MEMCACHED_HASH_FNV1_32;
 112   else if (!strcasecmp(opt_hash, "FNV1A_32"))
 113     set= MEMCACHED_HASH_FNV1A_32;
 114   else
 115   {
 116     fprintf(stderr, "hash: type not recognized %s\n", opt_hash);
 117     exit(1);
 118   }
 119
 120   rc= memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_HASH, set);
 121   if (rc != MEMCACHED_SUCCESS)
 122   {
 123     fprintf(stderr, "hash: memcache error %s\n", memcached_strerror(memc, rc));
 124     exit(1);
 125   }
 126 }
 127
 128 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
 129 static char *username;
 130 static char *passwd;
 131
 132 static int get_username(void *context, int id, const char **result,
 133                         unsigned int *len)
 134 {
 135   (void)context;
 136   if (!result || (id != SASL_CB_USER && id != SASL_CB_AUTHNAME))
 137     return SASL_BADPARAM;
 138
 139   *result= username;
 140   if (len)
 141      *len= (username == NULL) ? 0 : (unsigned int)strlen(username);
 142
 143   return SASL_OK;
 144 }
 145
 146 static int get_password(sasl_conn_t *conn, void *context, int id,
 147                         sasl_secret_t **psecret)
 148 {
 149   (void)context;
 150   static sasl_secret_t* x;
 151
 152   if (!conn || ! psecret || id != SASL_CB_PASS)
 153     return SASL_BADPARAM;
 154
 155   if (passwd == NULL)
 156   {
 157      *psecret= NULL;
 158      return SASL_OK;
 159   }
 160
 161   size_t len= strlen(passwd);
 162   x = realloc(x, sizeof(sasl_secret_t) + len);
 163   if (!x)
 164     return SASL_NOMEM;
 165
 166   x->len = len;
 167   strcpy((void *)x->data, passwd);
 168
 169   *psecret = x;
 170   return SASL_OK;
 171 }
 172
 173 /* callbacks we support */
 174 static sasl_callback_t sasl_callbacks[] = {
 175   {
 176     SASL_CB_USER, &get_username, NULL
 177   }, {
 178     SASL_CB_AUTHNAME, &get_username, NULL
 179   }, {
 180     SASL_CB_PASS, &get_password, NULL
 181   }, {
 182     SASL_CB_LIST_END, NULL, NULL
 183   }
 184 };
 185 #endif
 186
 187 bool initialize_sasl(memcached_st *memc, char *user, char *password)
 188 {
 189 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
 190   if (user != NULL && password != NULL)
 191   {
 192     username= user;
 193     passwd= password;
 194
 195     if (sasl_client_init(NULL) != SASL_OK)
 196     {
 197       fprintf(stderr, "Failed to initialize sasl library!\n");
 198       return false;
 199     }
 200     memcached_set_sasl_callbacks(memc, sasl_callbacks);
 201   }
 202 #else
 203   (void)memc;
 204   (void)user;
 205   (void)password;
 206 #endif
 207
 208   return true;
 209 }
 210
 211 void shutdown_sasl(void)
 212 {
 213 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
 214   if (username != NULL || passwd != NULL)
 215     sasl_done();
 216 #endif
 217 }
 218
 219 void initialize_sockets(void)
 220 {
 221   /* Define the function for all platforms to avoid #ifdefs in each program */
 222 #ifdef WIN32
 223   WSADATA wsaData;
 224   if (WSAStartup(MAKEWORD(2,0), &wsaData) != 0)
 225   {
 226     fprintf(stderr, "Socket Initialization Error. Program aborted\n");
 227     exit(EXIT_FAILURE);
 228   }
 229 #endif
 230 }