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