git.m6w6.name Git - awesomized/libmemcached/blob - src/bin/memexist.cc

   1 /*
   2     +--------------------------------------------------------------------+
   3     | libmemcached - C/C++ Client Library for memcached                  |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted under the terms of the BSD license.    |
   7     | You should have received a copy of the license in a bundled file   |
   8     | named LICENSE; in case you did not receive a copy you can review   |
   9     | the terms online at: https://opensource.org/licenses/BSD-3-Clause  |
  10     +--------------------------------------------------------------------+
  11     | Copyright (c) 2006-2014 Brian Aker   https://datadifferential.com/ |
  12     | Copyright (c) 2020 Michael Wallner   <mike@php.net>                |
  13     +--------------------------------------------------------------------+
  14 */
  15
  16 #include "mem_config.h"
  17
  18 #include <cstdio>
  19 #include <cstring>
  20 #include <getopt.h>
  21 #include <iostream>
  22 #include <unistd.h>
  23
  24 #include "libmemcached-1.0/memcached.h"
  25 #include "client_options.h"
  26 #include "utilities.h"
  27
  28 static int opt_binary = 0;
  29 static int opt_verbose = 0;
  30 static char *opt_servers = NULL;
  31 static char *opt_hash = NULL;
  32 static char *opt_username;
  33 static char *opt_passwd;
  34
  35 #define PROGRAM_NAME        "memexist"
  36 #define PROGRAM_DESCRIPTION "Check for the existance of a key within a cluster."
  37
  38 /* Prototypes */
  39 static void options_parse(int argc, char *argv[]);
  40
  41 int main(int argc, char *argv[]) {
  42   options_parse(argc, argv);
  43   initialize_sockets();
  44
  45   if (opt_servers == NULL) {
  46     char *temp;
  47
  48     if ((temp = getenv("MEMCACHED_SERVERS"))) {
  49       opt_servers = strdup(temp);
  50     }
  51
  52     if (opt_servers == NULL) {
  53       std::cerr << "No Servers provided" << std::endl;
  54       exit(EXIT_FAILURE);
  55     }
  56   }
  57
  58   memcached_server_st *servers = memcached_servers_parse(opt_servers);
  59   if (servers == NULL or memcached_server_list_count(servers) == 0) {
  60     std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
  61     return EXIT_FAILURE;
  62   }
  63
  64   memcached_st *memc = memcached_create(NULL);
  65   process_hash_option(memc, opt_hash);
  66
  67   memcached_server_push(memc, servers);
  68   memcached_server_list_free(servers);
  69   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, (uint64_t) opt_binary);
  70
  71   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0) {
  72     memcached_free(memc);
  73     std::cerr << "--username was supplied, but binary was not built with SASL support."
  74               << std::endl;
  75     return EXIT_FAILURE;
  76   }
  77
  78   if (opt_username) {
  79     memcached_return_t ret;
  80     if (memcached_failed(ret = memcached_set_sasl_auth_data(memc, opt_username, opt_passwd))) {
  81       std::cerr << memcached_last_error_message(memc) << std::endl;
  82       memcached_free(memc);
  83       return EXIT_FAILURE;
  84     }
  85   }
  86
  87   int return_code = EXIT_SUCCESS;
  88
  89   while (optind < argc) {
  90     memcached_return_t rc = memcached_exist(memc, argv[optind], strlen(argv[optind]));
  91
  92     if (rc == MEMCACHED_NOTFOUND) {
  93       if (opt_verbose) {
  94         std::cout << "Could not find key \"" << argv[optind] << "\"" << std::endl;
  95       }
  96
  97       return_code = EXIT_FAILURE;
  98     } else if (memcached_failed(rc)) {
  99       if (opt_verbose) {
 100         std::cerr << "Fatal error for key \"" << argv[optind]
 101                   << "\" :" << memcached_last_error_message(memc) << std::endl;
 102       }
 103
 104       return_code = EXIT_FAILURE;
 105     } else // success
 106     {
 107       if (opt_verbose) {
 108         std::cout << "Found key " << argv[optind] << std::endl;
 109       }
 110     }
 111
 112     optind++;
 113   }
 114
 115   memcached_free(memc);
 116
 117   if (opt_servers) {
 118     free(opt_servers);
 119   }
 120
 121   if (opt_hash) {
 122     free(opt_hash);
 123   }
 124
 125   return return_code;
 126 }
 127
 128 static void options_parse(int argc, char *argv[]) {
 129   memcached_programs_help_st help_options[] = {
 130       {0},
 131   };
 132
 133   static struct option long_options[] = {
 134       {(OPTIONSTRING) "version", no_argument, NULL, OPT_VERSION},
 135       {(OPTIONSTRING) "help", no_argument, NULL, OPT_HELP},
 136       {(OPTIONSTRING) "quiet", no_argument, NULL, OPT_QUIET},
 137       {(OPTIONSTRING) "verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 138       {(OPTIONSTRING) "debug", no_argument, &opt_verbose, OPT_DEBUG},
 139       {(OPTIONSTRING) "servers", required_argument, NULL, OPT_SERVERS},
 140       {(OPTIONSTRING) "hash", required_argument, NULL, OPT_HASH},
 141       {(OPTIONSTRING) "binary", no_argument, NULL, OPT_BINARY},
 142       {(OPTIONSTRING) "username", required_argument, NULL, OPT_USERNAME},
 143       {(OPTIONSTRING) "password", required_argument, NULL, OPT_PASSWD},
 144       {0, 0, 0, 0},
 145   };
 146
 147   bool opt_version = false;
 148   bool opt_help = false;
 149   int option_index = 0;
 150
 151   while (1) {
 152     int option_rv = getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 153     if (option_rv == -1) {
 154       break;
 155     }
 156
 157     switch (option_rv) {
 158     case 0:
 159       break;
 160
 161     case OPT_BINARY:
 162       opt_binary = 1;
 163       break;
 164
 165     case OPT_VERBOSE: /* --verbose or -v */
 166       opt_verbose = OPT_VERBOSE;
 167       break;
 168
 169     case OPT_DEBUG: /* --debug or -d */
 170       opt_verbose = OPT_DEBUG;
 171       break;
 172
 173     case OPT_VERSION: /* --version or -V */
 174       opt_version = true;
 175       break;
 176
 177     case OPT_HELP: /* --help or -h */
 178       opt_help = true;
 179       break;
 180
 181     case OPT_SERVERS: /* --servers or -s */
 182       opt_servers = strdup(optarg);
 183       break;
 184
 185     case OPT_HASH:
 186       opt_hash = strdup(optarg);
 187       break;
 188
 189     case OPT_USERNAME:
 190       opt_username = optarg;
 191       break;
 192
 193     case OPT_PASSWD:
 194       opt_passwd = optarg;
 195       break;
 196
 197     case OPT_QUIET:
 198       close_stdio();
 199       break;
 200
 201     case '?':
 202       /* getopt_long already printed an error message. */
 203       exit(EXIT_SUCCESS);
 204
 205     default:
 206       abort();
 207     }
 208   }
 209
 210   if (opt_version) {
 211     version_command(PROGRAM_NAME);
 212     exit(EXIT_SUCCESS);
 213   }
 214
 215   if (opt_help) {
 216     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 217     exit(EXIT_SUCCESS);
 218   }
 219 }