int
__close_cached_mp_read_session(struct cached_connection_ *rs)
{
__close_cached_connection(rs);
return (0);
}
int
__nss_common_cache_write_negative(void* mdata) {
struct cached_connection_params params;
cached_connection connection;
int res;
nss_cache_info const* cache_info;
nss_cache_data* cache_data;
cache_data = (nss_cache_data*)mdata;
cache_info = cache_data->info;
if (cache_data->key == NULL) {
return (NS_UNAVAIL);
}
memset(¶ms, 0, sizeof(struct cached_connection_params));
params.socket_path = CACHED_SOCKET_PATH;
connection = __open_cached_connection(¶ms);
if (connection == NULL) {
free(cache_data->key);
return (NS_UNAVAIL);
}
res = __cached_write(connection, cache_info->entry_name,
cache_data->key, cache_data->key_size, NULL, 0);
__close_cached_connection(connection);
free(cache_data->key);
return (res == 0 ? NS_SUCCESS : NS_UNAVAIL);
}
/*
* Gracefully closes the write session. The data, that were previously written
* to the session, are committed.
*/
int
__close_cached_mp_write_session(struct cached_connection_ *ws)
{
int notification;
int result;
notification = CET_MP_WRITE_SESSION_CLOSE_NOTIFICATION;
result = safe_write(ws, ¬ification, sizeof(int));
__close_cached_connection(ws);
return (0);
}
struct cached_connection_ *
__open_cached_mp_read_session(struct cached_connection_params const *params,
const char *entry_name)
{
struct cached_connection_ *connection, *retval;
size_t name_size;
int error_code;
int result;
retval = NULL;
connection = __open_cached_connection(params);
if (connection == NULL)
return (NULL);
connection->mp_flag = 1;
result = send_credentials(connection, CET_MP_READ_SESSION_REQUEST);
if (result != 0)
goto fin;
name_size = strlen(entry_name);
result = safe_write(connection, &name_size, sizeof(size_t));
if (result != 0)
goto fin;
result = safe_write(connection, entry_name, name_size);
if (result != 0)
goto fin;
result = safe_read(connection, &error_code, sizeof(int));
if (result != 0)
goto fin;
if (error_code != 0)
result = error_code;
fin:
if (result != 0)
__close_cached_connection(connection);
else
retval = connection;
return (retval);
}
int
__nss_common_cache_read(void* retval, void* mdata, va_list ap) {
struct cached_connection_params params;
cached_connection connection;
char* buffer;
size_t buffer_size, size;
nss_cache_info const* cache_info;
nss_cache_data* cache_data;
va_list ap_new;
int res;
cache_data = (nss_cache_data*)mdata;
cache_info = cache_data->info;
memset(¶ms, 0, sizeof(struct cached_connection_params));
params.socket_path = CACHED_SOCKET_PATH;
cache_data->key = (char*)malloc(NSS_CACHE_KEY_INITIAL_SIZE);
memset(cache_data->key, 0, NSS_CACHE_KEY_INITIAL_SIZE);
cache_data->key_size = NSS_CACHE_KEY_INITIAL_SIZE;
va_copy(ap_new, ap);
do {
size = cache_data->key_size;
res = cache_info->id_func(cache_data->key, &size, ap_new,
cache_info->mdata);
va_end(ap_new);
if (res == NS_RETURN) {
if (cache_data->key_size > NSS_CACHE_KEY_SIZE_LIMIT) {
break;
}
cache_data->key_size <<= 1;
cache_data->key = realloc(cache_data->key,
cache_data->key_size);
memset(cache_data->key, 0, cache_data->key_size);
va_copy(ap_new, ap);
}
} while (res == NS_RETURN);
if (res != NS_SUCCESS) {
free(cache_data->key);
cache_data->key = NULL;
cache_data->key_size = 0;
return (res);
} else {
cache_data->key_size = size;
}
buffer_size = NSS_CACHE_BUFFER_INITIAL_SIZE;
buffer = (char*)malloc(NSS_CACHE_BUFFER_INITIAL_SIZE);
memset(buffer, 0, NSS_CACHE_BUFFER_INITIAL_SIZE);
do {
connection = __open_cached_connection(¶ms);
if (connection == NULL) {
res = -1;
break;
}
res = __cached_read(connection, cache_info->entry_name,
cache_data->key, cache_data->key_size, buffer,
&buffer_size);
__close_cached_connection(connection);
if (res == -2 && buffer_size < NSS_CACHE_BUFFER_SIZE_LIMIT) {
buffer = (char*)realloc(buffer, buffer_size);
memset(buffer, 0, buffer_size);
}
} while (res == -2);
if (res == 0) {
if (buffer_size == 0) {
free(buffer);
free(cache_data->key);
cache_data->key = NULL;
cache_data->key_size = 0;
return (NS_RETURN);
}
va_copy(ap_new, ap);
res = cache_info->unmarshal_func(buffer, buffer_size, retval,
ap_new, cache_info->mdata);
va_end(ap_new);
if (res != NS_SUCCESS) {
free(buffer);
free(cache_data->key);
cache_data->key = NULL;
cache_data->key_size = 0;
return (res);
} else {
res = 0;
}
}
if (res == 0) {
free(cache_data->key);
cache_data->key = NULL;
cache_data->key_size = 0;
}
free(buffer);
return (res == 0 ? NS_SUCCESS : NS_NOTFOUND);
}
int
__nss_common_cache_write(void* retval, void* mdata, va_list ap) {
struct cached_connection_params params;
cached_connection connection;
char* buffer;
size_t buffer_size;
nss_cache_info const* cache_info;
nss_cache_data* cache_data;
va_list ap_new;
int res;
cache_data = (nss_cache_data*)mdata;
cache_info = cache_data->info;
if (cache_data->key == NULL) {
return (NS_UNAVAIL);
}
memset(¶ms, 0, sizeof(struct cached_connection_params));
params.socket_path = CACHED_SOCKET_PATH;
connection = __open_cached_connection(¶ms);
if (connection == NULL) {
free(cache_data->key);
return (NS_UNAVAIL);
}
buffer_size = NSS_CACHE_BUFFER_INITIAL_SIZE;
buffer = (char*)malloc(NSS_CACHE_BUFFER_INITIAL_SIZE);
memset(buffer, 0, NSS_CACHE_BUFFER_INITIAL_SIZE);
do {
size_t size;
size = buffer_size;
va_copy(ap_new, ap);
res = cache_info->marshal_func(buffer, &size, retval, ap_new,
cache_info->mdata);
va_end(ap_new);
if (res == NS_RETURN) {
if (buffer_size > NSS_CACHE_BUFFER_SIZE_LIMIT) {
break;
}
buffer_size <<= 1;
buffer = (char*)realloc(buffer, buffer_size);
memset(buffer, 0, buffer_size);
}
} while (res == NS_RETURN);
if (res != NS_SUCCESS) {
__close_cached_connection(connection);
free(cache_data->key);
free(buffer);
return (res);
}
res = __cached_write(connection, cache_info->entry_name,
cache_data->key, cache_data->key_size, buffer, buffer_size);
__close_cached_connection(connection);
free(cache_data->key);
free(buffer);
return (res == 0 ? NS_SUCCESS : NS_UNAVAIL);
}
