git.m6w6.name Git - awesomized/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
  52   if (!opt_servers)
  53   {
  54     char *temp;
  55
  56     if ((temp= getenv("MEMCACHED_SERVERS")))
  57       opt_servers= strdup(temp);
  58     else
  59     {
  60       fprintf(stderr, "No Servers provided\n");
  61       exit(1);
  62     }
  63   }
  64
  65   memc= memcached_create(NULL);
  66   process_hash_option(memc, opt_hash);
  67
  68   servers= memcached_servers_parse(opt_servers);
  69
  70   memcached_server_push(memc, servers);
  71   memcached_server_list_free(servers);
  72   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  73                          (uint64_t)opt_binary);
  74
  75   if (!initialize_sasl(memc, opt_username, opt_passwd))
  76   {
  77     memcached_free(memc);
  78     return 1;
  79   }
  80
  81   while (optind < argc)
  82   {
  83     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  84                           &string_length, &flags, &rc);
  85     if (rc == MEMCACHED_SUCCESS)
  86     {
  87       if (opt_displayflag)
  88       {
  89         if (opt_verbose)
  90           printf("key: %s\nflags: ", argv[optind]);
  91         printf("%x\n", flags);
  92       }
  93       else
  94       {
  95         if (opt_verbose)
  96         {
  97           printf("key: %s\nflags: %x\nlength: %zu\nvalue: ",
  98                  argv[optind], flags, string_length);
  99         }
 100
 101         if (opt_file)
 102         {
 103           FILE *fp;
 104           size_t written;
 105
 106           fp= fopen(opt_file, "w");
 107           if (!fp)
 108           {
 109             perror("fopen");
 110             return_code= -1;
 111             break;
 112           }
 113
 114           written= fwrite(string, 1, string_length, fp);
 115           if (written != string_length)
 116           {
 117             fprintf(stderr, "error writing file (written %zu, should be %zu)\n", written, string_length);
 118             return_code= -1;
 119             break;
 120           }
 121
 122           if (fclose(fp))
 123           {
 124             fprintf(stderr, "error closing file\n");
 125             return_code= -1;
 126             break;
 127           }
 128         }
 129         else
 130         {
 131             printf("%.*s\n", (int)string_length, string);
 132         }
 133         free(string);
 134       }
 135     }
 136     else if (rc != MEMCACHED_NOTFOUND)
 137     {
 138       fprintf(stderr, "memcat: %s: memcache error %s",
 139               argv[optind], memcached_strerror(memc, rc));
 140       if (memc->cached_errno)
 141       {
 142         fprintf(stderr, " system error %s", strerror(memc->cached_errno));
 143       }
 144       fprintf(stderr, "\n");
 145
 146       return_code= -1;
 147       break;
 148     }
 149     else // Unknown Issue
 150     {
 151       fprintf(stderr, "memcat: %s not found\n", argv[optind]);
 152       return_code= -1;
 153     }
 154     optind++;
 155   }
 156
 157   memcached_free(memc);
 158
 159   if (opt_servers)
 160     free(opt_servers);
 161   if (opt_hash)
 162     free(opt_hash);
 163
 164   shutdown_sasl();
 165
 166   return return_code;
 167 }
 168
 169
 170 void options_parse(int argc, char *argv[])
 171 {
 172   int option_index= 0;
 173   int option_rv;
 174
 175   memcached_programs_help_st help_options[]=
 176   {
 177     {0},
 178   };
 179
 180   static struct option long_options[]=
 181     {
 182       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 183       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 184       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 185       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 186       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 187       {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
 188       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 189       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 190       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 191       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 192       {(OPTIONSTRING)"file", required_argument, NULL, OPT_FILE},
 193       {0, 0, 0, 0},
 194     };
 195
 196   while (1)
 197   {
 198     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 199     if (option_rv == -1) break;
 200     switch (option_rv)
 201     {
 202     case 0:
 203       break;
 204     case OPT_BINARY:
 205       opt_binary = 1;
 206       break;
 207     case OPT_VERBOSE: /* --verbose or -v */
 208       opt_verbose = OPT_VERBOSE;
 209       break;
 210     case OPT_DEBUG: /* --debug or -d */
 211       opt_verbose = OPT_DEBUG;
 212       break;
 213     case OPT_VERSION: /* --version or -V */
 214       version_command(PROGRAM_NAME);
 215       break;
 216     case OPT_HELP: /* --help or -h */
 217       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 218       break;
 219     case OPT_SERVERS: /* --servers or -s */
 220       opt_servers= strdup(optarg);
 221       break;
 222     case OPT_HASH:
 223       opt_hash= strdup(optarg);
 224       break;
 225     case OPT_USERNAME:
 226       opt_username= optarg;
 227       break;
 228     case OPT_PASSWD:
 229       opt_passwd= optarg;
 230       break;
 231     case OPT_FILE:
 232       opt_file= optarg;
 233       break;
 234     case '?':
 235       /* getopt_long already printed an error message. */
 236       exit(1);
 237     default:
 238       abort();
 239     }
 240   }
 241 }