git.m6w6.name Git - m6w6/libmemcached/blob - src/bin/memflush.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 <cerrno>
  19 #include <cstdio>
  20 #include <cstring>
  21 #include <getopt.h>
  22 #include <iostream>
  23 #include <unistd.h>
  24
  25 #include "libmemcached-1.0/memcached.h"
  26 #include "client_options.h"
  27 #include "utilities.h"
  28
  29 static int opt_binary = 0;
  30 static int opt_verbose = 0;
  31 static time_t opt_expire = 0;
  32 static char *opt_servers = NULL;
  33 static char *opt_username;
  34 static char *opt_passwd;
  35
  36 #define PROGRAM_NAME        "memflush"
  37 #define PROGRAM_DESCRIPTION "Erase all data in a server of memcached servers."
  38
  39 /* Prototypes */
  40 void options_parse(int argc, char *argv[]);
  41
  42 int main(int argc, char *argv[]) {
  43   options_parse(argc, argv);
  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     free(opt_servers);
  62     return EXIT_FAILURE;
  63   }
  64
  65   free(opt_servers);
  66
  67   memcached_st *memc = memcached_create(NULL);
  68   memcached_server_push(memc, servers);
  69   memcached_server_list_free(servers);
  70   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, (uint64_t) opt_binary);
  71
  72   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0) {
  73     memcached_free(memc);
  74     std::cerr << "--username was supplied, but binary was not built with SASL support."
  75               << std::endl;
  76     return EXIT_FAILURE;
  77   }
  78
  79   if (opt_username) {
  80     memcached_return_t ret;
  81     if (memcached_failed(ret = memcached_set_sasl_auth_data(memc, opt_username, opt_passwd))) {
  82       std::cerr << memcached_last_error_message(memc) << std::endl;
  83       memcached_free(memc);
  84       return EXIT_FAILURE;
  85     }
  86   }
  87
  88   memcached_return_t rc = memcached_flush(memc, opt_expire);
  89   if (rc != MEMCACHED_SUCCESS) {
  90     std::cerr << memcached_last_error_message(memc) << std::endl;
  91     memcached_free(memc);
  92     return EXIT_FAILURE;
  93   }
  94
  95   memcached_free(memc);
  96   return EXIT_SUCCESS;
  97 }
  98
  99 void options_parse(int argc, char *argv[]) {
 100   static struct option long_options[] = {
 101       {(OPTIONSTRING) "version", no_argument, NULL, OPT_VERSION},
 102       {(OPTIONSTRING) "help", no_argument, NULL, OPT_HELP},
 103       {(OPTIONSTRING) "quiet", no_argument, NULL, OPT_QUIET},
 104       {(OPTIONSTRING) "verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 105       {(OPTIONSTRING) "debug", no_argument, &opt_verbose, OPT_DEBUG},
 106       {(OPTIONSTRING) "servers", required_argument, NULL, OPT_SERVERS},
 107       {(OPTIONSTRING) "expire", required_argument, NULL, OPT_EXPIRE},
 108       {(OPTIONSTRING) "binary", no_argument, NULL, OPT_BINARY},
 109       {(OPTIONSTRING) "username", required_argument, NULL, OPT_USERNAME},
 110       {(OPTIONSTRING) "password", required_argument, NULL, OPT_PASSWD},
 111       {0, 0, 0, 0},
 112   };
 113
 114   bool opt_version = false;
 115   bool opt_help = false;
 116   int option_index = 0;
 117   while (1) {
 118     int option_rv = getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 119     if (option_rv == -1)
 120       break;
 121     switch (option_rv) {
 122     case 0:
 123       break;
 124
 125     case OPT_BINARY:
 126       opt_binary = true;
 127       break;
 128
 129     case OPT_VERBOSE: /* --verbose or -v */
 130       opt_verbose = OPT_VERBOSE;
 131       break;
 132
 133     case OPT_DEBUG: /* --debug or -d */
 134       opt_verbose = OPT_DEBUG;
 135       break;
 136
 137     case OPT_VERSION: /* --version or -V */
 138       opt_version = true;
 139       break;
 140
 141     case OPT_HELP: /* --help or -h */
 142       opt_help = true;
 143       break;
 144
 145     case OPT_SERVERS: /* --servers or -s */
 146       opt_servers = strdup(optarg);
 147       break;
 148
 149     case OPT_EXPIRE: /* --expire */
 150       errno = 0;
 151       opt_expire = (time_t) strtoll(optarg, (char **) NULL, 10);
 152       if (errno) {
 153         std::cerr << "Incorrect value passed to --expire: `" << optarg << "`" << std::endl;
 154         exit(EXIT_FAILURE);
 155       }
 156       break;
 157
 158     case OPT_USERNAME:
 159       opt_username = optarg;
 160       break;
 161
 162     case OPT_PASSWD:
 163       opt_passwd = optarg;
 164       break;
 165
 166     case OPT_QUIET:
 167       close_stdio();
 168       break;
 169
 170     case '?':
 171       /* getopt_long already printed an error message. */
 172       exit(EXIT_FAILURE);
 173
 174     default:
 175       abort();
 176     }
 177   }
 178
 179   if (opt_version) {
 180     version_command(PROGRAM_NAME);
 181     exit(EXIT_SUCCESS);
 182   }
 183
 184   if (opt_help) {
 185     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, NULL);
 186     exit(EXIT_SUCCESS);
 187   }
 188 }