git.m6w6.name Git - m6w6/libmemcached/blob - clients/memcat.c

   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 <stdio.h>
  15 #include <inttypes.h>
  16 #include <string.h>
  17 #include <unistd.h>
  18 #include <getopt.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 (!initialize_sasl(memc, opt_username, opt_passwd))
  77   {
  78     memcached_free(memc);
  79     return 1;
  80   }
  81
  82   while (optind < argc)
  83   {
  84     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  85                           &string_length, &flags, &rc);
  86     if (rc == MEMCACHED_SUCCESS)
  87     {
  88       if (opt_displayflag)
  89       {
  90         if (opt_verbose)
  91           printf("key: %s\nflags: ", argv[optind]);
  92         printf("%x\n", flags);
  93       }
  94       else
  95       {
  96         if (opt_verbose)
  97         {
  98           printf("key: %s\nflags: %x\nlength: %zu\nvalue: ",
  99                  argv[optind], flags, string_length);
 100         }
 101
 102         if (opt_file)
 103         {
 104           FILE *fp;
 105           size_t written;
 106
 107           fp= fopen(opt_file, "w");
 108           if (!fp)
 109           {
 110             perror("fopen");
 111             return_code= -1;
 112             break;
 113           }
 114
 115           written= fwrite(string, 1, string_length, fp);
 116           if (written != string_length)
 117           {
 118             fprintf(stderr, "error writing file (written %zu, should be %zu)\n", written, string_length);
 119             return_code= -1;
 120             break;
 121           }
 122
 123           if (fclose(fp))
 124           {
 125             fprintf(stderr, "error closing file\n");
 126             return_code= -1;
 127             break;
 128           }
 129         }
 130         else
 131         {
 132             printf("%.*s\n", (int)string_length, string);
 133         }
 134         free(string);
 135       }
 136     }
 137     else if (rc != MEMCACHED_NOTFOUND)
 138     {
 139       fprintf(stderr, "memcat: %s: memcache error %s",
 140               argv[optind], memcached_strerror(memc, rc));
 141       if (memc->cached_errno)
 142       {
 143         fprintf(stderr, " system error %s", strerror(memc->cached_errno));
 144       }
 145       fprintf(stderr, "\n");
 146
 147       return_code= -1;
 148       break;
 149     }
 150     else // Unknown Issue
 151     {
 152       fprintf(stderr, "memcat: %s not found\n", argv[optind]);
 153       return_code= -1;
 154     }
 155     optind++;
 156   }
 157
 158   memcached_free(memc);
 159
 160   if (opt_servers)
 161     free(opt_servers);
 162   if (opt_hash)
 163     free(opt_hash);
 164
 165   shutdown_sasl();
 166
 167   return return_code;
 168 }
 169
 170
 171 void options_parse(int argc, char *argv[])
 172 {
 173   int option_index= 0;
 174   int option_rv;
 175
 176   memcached_programs_help_st help_options[]=
 177   {
 178     {0},
 179   };
 180
 181   static struct option long_options[]=
 182     {
 183       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 184       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 185       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 186       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 187       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 188       {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
 189       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 190       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 191       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 192       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 193       {(OPTIONSTRING)"file", required_argument, NULL, OPT_FILE},
 194       {0, 0, 0, 0},
 195     };
 196
 197   while (1)
 198   {
 199     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 200     if (option_rv == -1) break;
 201     switch (option_rv)
 202     {
 203     case 0:
 204       break;
 205     case OPT_BINARY:
 206       opt_binary = 1;
 207       break;
 208     case OPT_VERBOSE: /* --verbose or -v */
 209       opt_verbose = OPT_VERBOSE;
 210       break;
 211     case OPT_DEBUG: /* --debug or -d */
 212       opt_verbose = OPT_DEBUG;
 213       break;
 214     case OPT_VERSION: /* --version or -V */
 215       version_command(PROGRAM_NAME);
 216       break;
 217     case OPT_HELP: /* --help or -h */
 218       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 219       break;
 220     case OPT_SERVERS: /* --servers or -s */
 221       opt_servers= strdup(optarg);
 222       break;
 223     case OPT_HASH:
 224       opt_hash= strdup(optarg);
 225       break;
 226     case OPT_USERNAME:
 227       opt_username= optarg;
 228       break;
 229     case OPT_PASSWD:
 230       opt_passwd= optarg;
 231       break;
 232     case OPT_FILE:
 233       opt_file= optarg;
 234       break;
 235     case '?':
 236       /* getopt_long already printed an error message. */
 237       exit(1);
 238     default:
 239       abort();
 240     }
 241   }
 242 }