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