git.m6w6.name Git - awesomized/libmemcached/blob - clients/memcat.cc

   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 <config.h>
  13
  14 #include <cstdio>
  15 #include <cstring>
  16 #include <getopt.h>
  17 #include <iostream>
  18 #include <unistd.h>
  19 #include <libmemcached/memcached.h>
  20
  21 #include "utilities.h"
  22
  23 #define PROGRAM_NAME "memcat"
  24 #define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
  25
  26
  27 /* Prototypes */
  28 void options_parse(int argc, char *argv[]);
  29
  30 static int opt_binary= 0;
  31 static int opt_verbose= 0;
  32 static int opt_displayflag= 0;
  33 static char *opt_servers= NULL;
  34 static char *opt_hash= NULL;
  35 static char *opt_username;
  36 static char *opt_passwd;
  37 static char *opt_file;
  38
  39 int main(int argc, char *argv[])
  40 {
  41   memcached_st *memc;
  42   char *string;
  43   size_t string_length;
  44   uint32_t flags;
  45   memcached_return_t rc;
  46   memcached_server_st *servers;
  47
  48   int return_code= EXIT_SUCCESS;
  49
  50   options_parse(argc, argv);
  51   initialize_sockets();
  52
  53   if (!opt_servers)
  54   {
  55     char *temp;
  56
  57     if ((temp= getenv("MEMCACHED_SERVERS")))
  58     {
  59       opt_servers= strdup(temp);
  60     }
  61     else
  62     {
  63       std::cerr << "No servers provied" << std::endl;
  64       exit(EXIT_FAILURE);
  65     }
  66   }
  67
  68   memc= memcached_create(NULL);
  69   process_hash_option(memc, opt_hash);
  70
  71   servers= memcached_servers_parse(opt_servers);
  72
  73   memcached_server_push(memc, servers);
  74   memcached_server_list_free(servers);
  75   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  76                          (uint64_t)opt_binary);
  77
  78   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  79   {
  80     memcached_free(memc);
  81     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  82     return EXIT_FAILURE;
  83   }
  84
  85   if (opt_username)
  86   {
  87     memcached_return_t ret;
  88     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  89     {
  90       std::cerr << memcached_last_error_message(memc) << std::endl;
  91       memcached_free(memc);
  92       return EXIT_FAILURE;
  93     }
  94   }
  95
  96   while (optind < argc)
  97   {
  98     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  99                           &string_length, &flags, &rc);
 100     if (rc == MEMCACHED_SUCCESS)
 101     {
 102       if (opt_displayflag)
 103       {
 104         if (opt_verbose)
 105         {
 106           std::cout << "key: " << argv[optind] << std::endl << "flags: " << flags << std::endl;
 107         }
 108       }
 109       else
 110       {
 111         if (opt_verbose)
 112         {
 113           std::cout << "key: " << argv[optind] << std::endl << "flags: " << flags << "length: " << string_length << std::endl << "value: ";
 114         }
 115
 116         if (opt_file)
 117         {
 118           FILE *fp= fopen(opt_file, "w");
 119           if (fp == NULL)
 120           {
 121             perror("fopen");
 122             return_code= EXIT_FAILURE;
 123             break;
 124           }
 125
 126           size_t written= fwrite(string, 1, string_length, fp);
 127           if (written != string_length)
 128           {
 129             std::cerr << "error writing file to file " << opt_file << " wrote " << written << ", should have written" << string_length << std::endl;
 130             return_code= EXIT_FAILURE;
 131             break;
 132           }
 133
 134           if (fclose(fp))
 135           {
 136             std::cerr << "error closing " << opt_file << std::endl;
 137             return_code= EXIT_FAILURE;
 138             break;
 139           }
 140         }
 141         else
 142         {
 143           std::cout.write(string, string_length);
 144           std::cout << std::endl;
 145         }
 146         free(string);
 147       }
 148     }
 149     else if (rc != MEMCACHED_NOTFOUND)
 150     {
 151       std::cerr << "error on " << argv[optind] << "(" <<  memcached_strerror(memc, rc) << ")";
 152       if (memcached_last_error_errno(memc))
 153       {
 154         std::cerr << " system error (" << strerror(memcached_last_error_errno(memc)) << ")" << std::endl;
 155       }
 156       std::cerr << std::endl;
 157
 158       return_code= EXIT_FAILURE;
 159       break;
 160     }
 161     else // Unknown Issue
 162     {
 163       std::cerr << "error on " << argv[optind] << "("<< memcached_strerror(NULL, rc) << ")" << std::endl;
 164       return_code= EXIT_FAILURE;
 165     }
 166     optind++;
 167   }
 168
 169   memcached_free(memc);
 170
 171   if (opt_servers)
 172   {
 173     free(opt_servers);
 174   }
 175   if (opt_hash)
 176   {
 177     free(opt_hash);
 178   }
 179
 180   return return_code;
 181 }
 182
 183
 184 void options_parse(int argc, char *argv[])
 185 {
 186   int option_index= 0;
 187
 188   memcached_programs_help_st help_options[]=
 189   {
 190     {0},
 191   };
 192
 193   static struct option long_options[]=
 194     {
 195       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 196       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 197       {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 198       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 199       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 200       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 201       {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
 202       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 203       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 204       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 205       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 206       {(OPTIONSTRING)"file", required_argument, NULL, OPT_FILE},
 207       {0, 0, 0, 0},
 208     };
 209
 210   while (1)
 211   {
 212     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 213     if (option_rv == -1) break;
 214     switch (option_rv)
 215     {
 216     case 0:
 217       break;
 218     case OPT_BINARY:
 219       opt_binary = 1;
 220       break;
 221     case OPT_VERBOSE: /* --verbose or -v */
 222       opt_verbose = OPT_VERBOSE;
 223       break;
 224     case OPT_DEBUG: /* --debug or -d */
 225       opt_verbose = OPT_DEBUG;
 226       break;
 227     case OPT_VERSION: /* --version or -V */
 228       version_command(PROGRAM_NAME);
 229       break;
 230     case OPT_HELP: /* --help or -h */
 231       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 232       break;
 233     case OPT_SERVERS: /* --servers or -s */
 234       opt_servers= strdup(optarg);
 235       break;
 236     case OPT_HASH:
 237       opt_hash= strdup(optarg);
 238       break;
 239     case OPT_USERNAME:
 240       opt_username= optarg;
 241       break;
 242     case OPT_PASSWD:
 243       opt_passwd= optarg;
 244       break;
 245     case OPT_FILE:
 246       opt_file= optarg;
 247       break;
 248
 249     case OPT_QUIET:
 250       close_stdio();
 251       break;
 252
 253     case '?':
 254       /* getopt_long already printed an error message. */
 255       exit(1);
 256     default:
 257       abort();
 258     }
 259   }
 260 }