git.m6w6.name Git - m6w6/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 <iostream>
  15 #include <stdio.h>
  16 #include <inttypes.h>
  17 #include <string.h>
  18 #include <unistd.h>
  19 #include <getopt.h>
  20 #include <libmemcached/memcached.h>
  21
  22 #include "utilities.h"
  23
  24 #define PROGRAM_NAME "memcat"
  25 #define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
  26
  27
  28 /* Prototypes */
  29 void options_parse(int argc, char *argv[]);
  30
  31 static int opt_binary= 0;
  32 static int opt_verbose= 0;
  33 static int opt_displayflag= 0;
  34 static char *opt_servers= NULL;
  35 static char *opt_hash= NULL;
  36 static char *opt_username;
  37 static char *opt_passwd;
  38 static char *opt_file;
  39
  40 int main(int argc, char *argv[])
  41 {
  42   memcached_st *memc;
  43   char *string;
  44   size_t string_length;
  45   uint32_t flags;
  46   memcached_return_t rc;
  47   memcached_server_st *servers;
  48
  49   int return_code= 0;
  50
  51   options_parse(argc, argv);
  52   initialize_sockets();
  53
  54   if (!opt_servers)
  55   {
  56     char *temp;
  57
  58     if ((temp= getenv("MEMCACHED_SERVERS")))
  59       opt_servers= strdup(temp);
  60     else
  61     {
  62       fprintf(stderr, "No Servers provided\n");
  63       exit(1);
  64     }
  65   }
  66
  67   memc= memcached_create(NULL);
  68   process_hash_option(memc, opt_hash);
  69
  70   servers= memcached_servers_parse(opt_servers);
  71
  72   memcached_server_push(memc, servers);
  73   memcached_server_list_free(servers);
  74   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  75                          (uint64_t)opt_binary);
  76
  77   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  78   {
  79     memcached_free(memc);
  80     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  81     return EXIT_FAILURE;
  82   }
  83
  84   if (opt_username)
  85   {
  86     memcached_return_t ret;
  87     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  88     {
  89       std::cerr << memcached_last_error_message(memc) << std::endl;
  90       memcached_free(memc);
  91       return EXIT_FAILURE;
  92     }
  93   }
  94
  95   while (optind < argc)
  96   {
  97     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  98                           &string_length, &flags, &rc);
  99     if (rc == MEMCACHED_SUCCESS)
 100     {
 101       if (opt_displayflag)
 102       {
 103         if (opt_verbose)
 104           printf("key: %s\nflags: ", argv[optind]);
 105         printf("%x\n", flags);
 106       }
 107       else
 108       {
 109         if (opt_verbose)
 110         {
 111           printf("key: %s\nflags: %x\nlength: %lu\nvalue: ",
 112                  argv[optind], flags, (unsigned long)string_length);
 113         }
 114
 115         if (opt_file)
 116         {
 117           FILE *fp;
 118           size_t written;
 119
 120           fp= fopen(opt_file, "w");
 121           if (!fp)
 122           {
 123             perror("fopen");
 124             return_code= -1;
 125             break;
 126           }
 127
 128           written= fwrite(string, 1, string_length, fp);
 129           if (written != string_length)
 130           {
 131             fprintf(stderr, "error writing file (written %lu, should be %lu)\n", (unsigned long)written, (unsigned long)string_length);
 132             return_code= -1;
 133             break;
 134           }
 135
 136           if (fclose(fp))
 137           {
 138             fprintf(stderr, "error closing file\n");
 139             return_code= -1;
 140             break;
 141           }
 142         }
 143         else
 144         {
 145             printf("%.*s\n", (int)string_length, string);
 146         }
 147         free(string);
 148       }
 149     }
 150     else if (rc != MEMCACHED_NOTFOUND)
 151     {
 152       fprintf(stderr, "memcat: %s: memcache error %s",
 153               argv[optind], memcached_strerror(memc, rc));
 154       if (memcached_last_error_errno(memc))
 155       {
 156         fprintf(stderr, " system error %s", strerror(memcached_last_error_errno(memc)));
 157       }
 158       fprintf(stderr, "\n");
 159
 160       return_code= -1;
 161       break;
 162     }
 163     else // Unknown Issue
 164     {
 165       fprintf(stderr, "memcat: %s not found\n", argv[optind]);
 166       return_code= -1;
 167     }
 168     optind++;
 169   }
 170
 171   memcached_free(memc);
 172
 173   if (opt_servers)
 174     free(opt_servers);
 175   if (opt_hash)
 176     free(opt_hash);
 177
 178   return return_code;
 179 }
 180
 181
 182 void options_parse(int argc, char *argv[])
 183 {
 184   int option_index= 0;
 185   int option_rv;
 186
 187   memcached_programs_help_st help_options[]=
 188   {
 189     {0},
 190   };
 191
 192   static struct option long_options[]=
 193     {
 194       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 195       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 196       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 197       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 198       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 199       {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
 200       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 201       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 202       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 203       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 204       {(OPTIONSTRING)"file", required_argument, NULL, OPT_FILE},
 205       {0, 0, 0, 0},
 206     };
 207
 208   while (1)
 209   {
 210     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 211     if (option_rv == -1) break;
 212     switch (option_rv)
 213     {
 214     case 0:
 215       break;
 216     case OPT_BINARY:
 217       opt_binary = 1;
 218       break;
 219     case OPT_VERBOSE: /* --verbose or -v */
 220       opt_verbose = OPT_VERBOSE;
 221       break;
 222     case OPT_DEBUG: /* --debug or -d */
 223       opt_verbose = OPT_DEBUG;
 224       break;
 225     case OPT_VERSION: /* --version or -V */
 226       version_command(PROGRAM_NAME);
 227       break;
 228     case OPT_HELP: /* --help or -h */
 229       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 230       break;
 231     case OPT_SERVERS: /* --servers or -s */
 232       opt_servers= strdup(optarg);
 233       break;
 234     case OPT_HASH:
 235       opt_hash= strdup(optarg);
 236       break;
 237     case OPT_USERNAME:
 238       opt_username= optarg;
 239       break;
 240     case OPT_PASSWD:
 241       opt_passwd= optarg;
 242       break;
 243     case OPT_FILE:
 244       opt_file= optarg;
 245       break;
 246     case '?':
 247       /* getopt_long already printed an error message. */
 248       exit(1);
 249     default:
 250       abort();
 251     }
 252   }
 253 }