git.m6w6.name Git - m6w6/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
  12 #include "libmemcached/common.h"
  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   default: WATCHPOINT_ASSERT(0);
  64   };
  65
  66   WATCHPOINT_ASSERT(0);
  67   return "forgot to document this function :)";
  68 }
  69
  70 void help_command(const char *command_name, const char *description,
  71                   const struct option *long_options,
  72                   memcached_programs_help_st *options __attribute__((unused)))
  73 {
  74   unsigned int x;
  75
  76   printf("%s v%u.%u\n\n", command_name, 1U, 0U);
  77   printf("\t%s\n\n", description);
  78   printf("Current options. A '=' means the option takes a value.\n\n");
  79
  80   for (x= 0; long_options[x].name; x++)
  81   {
  82     const char *help_message;
  83
  84     printf("\t --%s%c\n", long_options[x].name,
  85            long_options[x].has_arg ? '=' : ' ');
  86     if ((help_message= lookup_help(long_options[x].val)))
  87       printf("\t\t%s\n", help_message);
  88   }
  89
  90   printf("\n");
  91   exit(0);
  92 }
  93
  94 void process_hash_option(memcached_st *memc, char *opt_hash)
  95 {
  96   uint64_t set;
  97   memcached_return_t rc;
  98
  99   if (opt_hash == NULL)
 100     return;
 101
 102   set= MEMCACHED_HASH_DEFAULT; /* Just here to solve warning */
 103   if (!strcasecmp(opt_hash, "CRC"))
 104     set= MEMCACHED_HASH_CRC;
 105   else if (!strcasecmp(opt_hash, "FNV1_64"))
 106     set= MEMCACHED_HASH_FNV1_64;
 107   else if (!strcasecmp(opt_hash, "FNV1A_64"))
 108     set= MEMCACHED_HASH_FNV1A_64;
 109   else if (!strcasecmp(opt_hash, "FNV1_32"))
 110     set= MEMCACHED_HASH_FNV1_32;
 111   else if (!strcasecmp(opt_hash, "FNV1A_32"))
 112     set= MEMCACHED_HASH_FNV1A_32;
 113   else
 114   {
 115     fprintf(stderr, "hash: type not recognized %s\n", opt_hash);
 116     exit(1);
 117   }
 118
 119   rc= memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_HASH, set);
 120   if (rc != MEMCACHED_SUCCESS)
 121   {
 122     fprintf(stderr, "hash: memcache error %s\n", memcached_strerror(memc, rc));
 123     exit(1);
 124   }
 125 }
 126
 127 static char *username;
 128 static char *passwd;
 129
 130 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
 131 static int get_username(void *context, int id, const char **result,
 132                         unsigned int *len)
 133 {
 134   (void)context;
 135   if (!result || (id != SASL_CB_USER && id != SASL_CB_AUTHNAME))
 136     return SASL_BADPARAM;
 137
 138   *result= username;
 139   if (len)
 140      *len= (username == NULL) ? 0 : (unsigned int)strlen(username);
 141
 142   return SASL_OK;
 143 }
 144
 145 static int get_password(sasl_conn_t *conn, void *context, int id,
 146                         sasl_secret_t **psecret)
 147 {
 148   (void)context;
 149   static sasl_secret_t* x;
 150
 151   if (!conn || ! psecret || id != SASL_CB_PASS)
 152     return SASL_BADPARAM;
 153
 154   if (passwd == NULL)
 155   {
 156      *psecret= NULL;
 157      return SASL_OK;
 158   }
 159
 160   size_t len= strlen(passwd);
 161   x = realloc(x, sizeof(sasl_secret_t) + len);
 162   if (!x)
 163     return SASL_NOMEM;
 164
 165   x->len = len;
 166   strcpy((void *)x->data, passwd);
 167
 168   *psecret = x;
 169   return SASL_OK;
 170 }
 171
 172 /* callbacks we support */
 173 static sasl_callback_t sasl_callbacks[] = {
 174   {
 175     SASL_CB_USER, &get_username, NULL
 176   }, {
 177     SASL_CB_AUTHNAME, &get_username, NULL
 178   }, {
 179     SASL_CB_PASS, &get_password, NULL
 180   }, {
 181     SASL_CB_LIST_END, NULL, NULL
 182   }
 183 };
 184 #endif
 185
 186 bool initialize_sasl(memcached_st *memc, char *user, char *password)
 187 {
 188 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
 189   if (user != NULL && password != NULL)
 190   {
 191     username= user;
 192     passwd= password;
 193
 194     if (sasl_client_init(NULL) != SASL_OK)
 195     {
 196       fprintf(stderr, "Failed to initialize sasl library!\n");
 197       return false;
 198     }
 199     memcached_set_sasl_callbacks(memc, sasl_callbacks);
 200   }
 201 #else
 202   (void)memc;
 203   (void)user;
 204   (void)passwd;
 205 #endif
 206
 207   return true;
 208 }
 209
 210 void shutdown_sasl(void)
 211 {
 212 #if LIBMEMCACHED_WITH_SASL_SUPPORT
 213   if (username != NULL || passwd != NULL)
 214     sasl_done();
 215 #endif
 216 }