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