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 <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 and initialize_sasl(memc, opt_username, opt_passwd) == false)
  85   {
  86     memcached_free(memc);
  87     return EXIT_FAILURE;
  88   }
  89
  90   while (optind < argc)
  91   {
  92     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  93                           &string_length, &flags, &rc);
  94     if (rc == MEMCACHED_SUCCESS)
  95     {
  96       if (opt_displayflag)
  97       {
  98         if (opt_verbose)
  99           printf("key: %s\nflags: ", argv[optind]);
 100         printf("%x\n", flags);
 101       }
 102       else
 103       {
 104         if (opt_verbose)
 105         {
 106           printf("key: %s\nflags: %x\nlength: %lu\nvalue: ",
 107                  argv[optind], flags, (unsigned long)string_length);
 108         }
 109
 110         if (opt_file)
 111         {
 112           FILE *fp;
 113           size_t written;
 114
 115           fp= fopen(opt_file, "w");
 116           if (!fp)
 117           {
 118             perror("fopen");
 119             return_code= -1;
 120             break;
 121           }
 122
 123           written= fwrite(string, 1, string_length, fp);
 124           if (written != string_length)
 125           {
 126             fprintf(stderr, "error writing file (written %lu, should be %lu)\n", (unsigned long)written, (unsigned long)string_length);
 127             return_code= -1;
 128             break;
 129           }
 130
 131           if (fclose(fp))
 132           {
 133             fprintf(stderr, "error closing file\n");
 134             return_code= -1;
 135             break;
 136           }
 137         }
 138         else
 139         {
 140             printf("%.*s\n", (int)string_length, string);
 141         }
 142         free(string);
 143       }
 144     }
 145     else if (rc != MEMCACHED_NOTFOUND)
 146     {
 147       fprintf(stderr, "memcat: %s: memcache error %s",
 148               argv[optind], memcached_strerror(memc, rc));
 149       if (memcached_last_error_errno(memc))
 150       {
 151         fprintf(stderr, " system error %s", strerror(memcached_last_error_errno(memc)));
 152       }
 153       fprintf(stderr, "\n");
 154
 155       return_code= -1;
 156       break;
 157     }
 158     else // Unknown Issue
 159     {
 160       fprintf(stderr, "memcat: %s not found\n", argv[optind]);
 161       return_code= -1;
 162     }
 163     optind++;
 164   }
 165
 166   memcached_free(memc);
 167
 168   if (opt_servers)
 169     free(opt_servers);
 170   if (opt_hash)
 171     free(opt_hash);
 172
 173   shutdown_sasl();
 174
 175   return return_code;
 176 }
 177
 178
 179 void options_parse(int argc, char *argv[])
 180 {
 181   int option_index= 0;
 182   int option_rv;
 183
 184   memcached_programs_help_st help_options[]=
 185   {
 186     {0},
 187   };
 188
 189   static struct option long_options[]=
 190     {
 191       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 192       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 193       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 194       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 195       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 196       {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
 197       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 198       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 199       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 200       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 201       {(OPTIONSTRING)"file", required_argument, NULL, OPT_FILE},
 202       {0, 0, 0, 0},
 203     };
 204
 205   while (1)
 206   {
 207     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 208     if (option_rv == -1) break;
 209     switch (option_rv)
 210     {
 211     case 0:
 212       break;
 213     case OPT_BINARY:
 214       opt_binary = 1;
 215       break;
 216     case OPT_VERBOSE: /* --verbose or -v */
 217       opt_verbose = OPT_VERBOSE;
 218       break;
 219     case OPT_DEBUG: /* --debug or -d */
 220       opt_verbose = OPT_DEBUG;
 221       break;
 222     case OPT_VERSION: /* --version or -V */
 223       version_command(PROGRAM_NAME);
 224       break;
 225     case OPT_HELP: /* --help or -h */
 226       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 227       break;
 228     case OPT_SERVERS: /* --servers or -s */
 229       opt_servers= strdup(optarg);
 230       break;
 231     case OPT_HASH:
 232       opt_hash= strdup(optarg);
 233       break;
 234     case OPT_USERNAME:
 235       opt_username= optarg;
 236       break;
 237     case OPT_PASSWD:
 238       opt_passwd= optarg;
 239       break;
 240     case OPT_FILE:
 241       opt_file= optarg;
 242       break;
 243     case '?':
 244       /* getopt_long already printed an error message. */
 245       exit(1);
 246     default:
 247       abort();
 248     }
 249   }
 250 }