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/* LibMemcached
* Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
* Copyright (C) 2006-2009 Brian Aker
* All rights reserved.
*
* Use and distribution licensed under the BSD license. See
* the COPYING file in the parent directory for full text.
*
* Summary:
*
*/
#include <mem_config.h>
#include <cstdio>
#include <cstring>
#include <getopt.h>
#include <iostream>
#include <unistd.h>
#include <libmemcached-1.0/memcached.h>
#include "utilities.h"
#define PROGRAM_NAME "memcat"
#define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
/* Prototypes */
void options_parse(int argc, char *argv[]);
static int opt_binary= 0;
static int opt_verbose= 0;
static int opt_displayflag= 0;
static char *opt_servers= NULL;
static char *opt_hash= NULL;
static char *opt_username;
static char *opt_passwd;
static char *opt_file;
int main(int argc, char *argv[])
{
memcached_st *memc;
char *string;
size_t string_length;
uint32_t flags;
memcached_return_t rc;
memcached_server_st *servers;
int return_code= EXIT_SUCCESS;
options_parse(argc, argv);
initialize_sockets();
if (!opt_servers)
{
char *temp;
if ((temp= getenv("MEMCACHED_SERVERS")))
{
opt_servers= strdup(temp);
}
else
{
std::cerr << "No servers provied" << std::endl;
exit(EXIT_FAILURE);
}
}
memc= memcached_create(NULL);
process_hash_option(memc, opt_hash);
servers= memcached_servers_parse(opt_servers);
memcached_server_push(memc, servers);
memcached_server_list_free(servers);
memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
(uint64_t)opt_binary);
if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
{
memcached_free(memc);
std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
return EXIT_FAILURE;
}
if (opt_username)
{
memcached_return_t ret;
if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
{
std::cerr << memcached_last_error_message(memc) << std::endl;
memcached_free(memc);
return EXIT_FAILURE;
}
}
while (optind < argc)
{
string= memcached_get(memc, argv[optind], strlen(argv[optind]),
&string_length, &flags, &rc);
if (rc == MEMCACHED_SUCCESS)
{
if (opt_displayflag)
{
if (opt_verbose)
{
std::cout << "key: " << argv[optind] << std::endl << "flags: " << flags << std::endl;
}
}
else
{
if (opt_verbose)
{
std::cout << "key: " << argv[optind] << std::endl << "flags: " << flags << "length: " << string_length << std::endl << "value: ";
}
if (opt_file)
{
FILE *fp= fopen(opt_file, "w");
if (fp == NULL)
{
perror("fopen");
return_code= EXIT_FAILURE;
break;
}
size_t written= fwrite(string, 1, string_length, fp);
if (written != string_length)
{
std::cerr << "error writing file to file " << opt_file << " wrote " << written << ", should have written" << string_length << std::endl;
return_code= EXIT_FAILURE;
break;
}
if (fclose(fp))
{
std::cerr << "error closing " << opt_file << std::endl;
return_code= EXIT_FAILURE;
break;
}
}
else
{
std::cout.write(string, string_length);
std::cout << std::endl;
}
free(string);
}
}
else if (rc != MEMCACHED_NOTFOUND)
{
std::cerr << "error on " << argv[optind] << "(" << memcached_strerror(memc, rc) << ")";
if (memcached_last_error_errno(memc))
{
std::cerr << " system error (" << strerror(memcached_last_error_errno(memc)) << ")" << std::endl;
}
std::cerr << std::endl;
return_code= EXIT_FAILURE;
break;
}
else // Unknown Issue
{
std::cerr << "error on " << argv[optind] << "("<< memcached_strerror(NULL, rc) << ")" << std::endl;
return_code= EXIT_FAILURE;
}
optind++;
}
memcached_free(memc);
if (opt_servers)
{
free(opt_servers);
}
if (opt_hash)
{
free(opt_hash);
}
return return_code;
}
void options_parse(int argc, char *argv[])
{
int option_index= 0;
memcached_programs_help_st help_options[]=
{
{0},
};
static struct option long_options[]=
{
{(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
{(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
{(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
{(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
{(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
{(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
{(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
{(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
{(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
{(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
{(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
{(OPTIONSTRING)"file", required_argument, NULL, OPT_FILE},
{0, 0, 0, 0},
};
while (1)
{
int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
if (option_rv == -1) break;
switch (option_rv)
{
case 0:
break;
case OPT_BINARY:
opt_binary = 1;
break;
case OPT_VERBOSE: /* --verbose or -v */
opt_verbose = OPT_VERBOSE;
break;
case OPT_DEBUG: /* --debug or -d */
opt_verbose = OPT_DEBUG;
break;
case OPT_VERSION: /* --version or -V */
version_command(PROGRAM_NAME);
break;
case OPT_HELP: /* --help or -h */
help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
break;
case OPT_SERVERS: /* --servers or -s */
opt_servers= strdup(optarg);
break;
case OPT_HASH:
opt_hash= strdup(optarg);
break;
case OPT_USERNAME:
opt_username= optarg;
break;
case OPT_PASSWD:
opt_passwd= optarg;
break;
case OPT_FILE:
opt_file= optarg;
break;
case OPT_QUIET:
close_stdio();
break;
case '?':
/* getopt_long already printed an error message. */
exit(1);
default:
abort();
}
}
}
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