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/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Libmemcached library
*
* Copyright (C) 2011 Data Differential, http://datadifferential.com/
* Copyright (C) 2010 Brian Aker All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Summary: connects to a host, and determines what its pid is
*
*/
#include <libmemcachedutil/common.h>
// Never look at the stat object directly.
pid_t libmemcached_util_getpid(const char *hostname, in_port_t port, memcached_return_t *ret)
{
pid_t pid= -1;
memcached_return_t unused;
if (ret == NULL)
{
ret= &unused;
}
memcached_st *memc_ptr= memcached_create(NULL);
if (memc_ptr == NULL)
{
*ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
return -1;
}
memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
if (memcached_success(rc))
{
memcached_stat_st *stat= memcached_stat(memc_ptr, NULL, &rc);
if (memcached_success(rc) and stat and stat->pid != -1)
{
pid= stat->pid;
}
else if (memcached_success(rc))
{
rc= MEMCACHED_UNKNOWN_STAT_KEY; // Something went wrong if this happens
}
else if (rc == MEMCACHED_SOME_ERRORS) // Generic answer, we will now find the specific reason (if one exists)
{
memcached_server_instance_st instance= memcached_server_instance_by_position(memc_ptr, 0);
assert_msg(instance and instance->error_messages, " ");
if (instance and instance->error_messages)
{
rc= memcached_server_error_return(instance);
}
}
memcached_stat_free(memc_ptr, stat);
}
memcached_free(memc_ptr);
*ret= rc;
return pid;
}
pid_t libmemcached_util_getpid2(const char *hostname, in_port_t port, const char *username, const char *password, memcached_return_t *ret)
{
if (username == NULL)
{
return libmemcached_util_getpid(hostname, port, ret);
}
pid_t pid= -1;
memcached_return_t unused;
if (not ret)
ret= &unused;
if (LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
{
*ret= MEMCACHED_NOT_SUPPORTED;
return pid;
}
memcached_st *memc_ptr= memcached_create(NULL);
if (not memc_ptr)
{
*ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
return -1;
}
if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
{
memcached_free(memc_ptr);
return false;
}
memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
if (memcached_success(rc))
{
memcached_stat_st *stat= memcached_stat(memc_ptr, NULL, &rc);
if (memcached_success(rc) and stat and stat->pid != -1)
{
pid= stat->pid;
}
else if (memcached_success(rc))
{
rc= MEMCACHED_UNKNOWN_STAT_KEY; // Something went wrong if this happens
}
else if (rc == MEMCACHED_SOME_ERRORS) // Generic answer, we will now find the specific reason (if one exists)
{
memcached_server_instance_st instance=
memcached_server_instance_by_position(memc_ptr, 0);
#if 0
assert_msg(instance and instance->error_messages, " ");
#endif
if (instance and instance->error_messages)
{
rc= memcached_server_error_return(instance);
}
}
memcached_stat_free(memc_ptr, stat);
}
memcached_free(memc_ptr);
*ret= rc;
return pid;
}
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