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index 636396a2434c1edca22edfdb9b3b2103036499cc..91196dcd4448125864073bff616ce24f9d406809 100644 (file)
#include "sysdb.h"
#include "core/object.h"
+#include "core/plugin.h"
#include "frontend/connection-private.h"
#include "utils/error.h"
#include "utils/strbuf.h"
#include <arpa/inet.h>
#include <fcntl.h>
+#include <stdlib.h>
#include <string.h>
+#include <pthread.h>
+
+/*
+ * private variables
+ */
+
+static pthread_key_t conn_ctx_key;
+static _Bool conn_ctx_key_initialized = 0;
+
/*
- * private data types
+ * private types
*/
/* name of connection objects */
/* destroy = */ connection_destroy,
};
+/*
+ * private helper functions
+ */
+
+static void
+sdb_conn_ctx_destructor(void *c)
+{
+ sdb_object_t *conn = c;
+
+ if (! conn)
+ return;
+ sdb_object_deref(conn);
+} /* sdb_conn_ctx_destructor */
+
+static void
+sdb_conn_ctx_init(void)
+{
+ if (conn_ctx_key_initialized)
+ return;
+
+ pthread_key_create(&conn_ctx_key, sdb_conn_ctx_destructor);
+ conn_ctx_key_initialized = 1;
+} /* sdb_conn_ctx_init */
+
+static void
+sdb_conn_set_ctx(sdb_conn_t *conn)
+{
+ sdb_conn_ctx_init();
+ if (conn)
+ sdb_object_ref(SDB_OBJ(conn));
+ pthread_setspecific(conn_ctx_key, conn);
+} /* sdb_conn_set_ctx */
+
+static sdb_conn_t *
+sdb_conn_get_ctx(void)
+{
+ if (! conn_ctx_key_initialized)
+ return NULL;
+ return pthread_getspecific(conn_ctx_key);
+} /* sdb_conn_get_ctx */
+
/*
* connection handler functions
*/
+/*
+ * connection_log:
+ * Send a log message originating from the current thread to the client.
+ */
+static int
+connection_log(int prio, const char *msg,
+ sdb_object_t __attribute__((unused)) *user_data)
+{
+ sdb_conn_t *conn;
+
+ conn = sdb_conn_get_ctx();
+ /* no connection associated to this thread
+ * or user not authenticated yet => don't leak any information */
+ if ((! conn) || (! conn->username))
+ return 0;
+
+ /* XXX: make the log-level configurable by the client at runtime */
+ if (prio >= SDB_LOG_DEBUG)
+ return 0;
+
+ /* TODO: Use CONNECTION_LOG_<prio>? */
+ if (sdb_connection_send(conn, CONNECTION_LOG,
+ (uint32_t)strlen(msg), msg) < 0)
+ return -1;
+ return 0;
+} /* connection_log */
+
static uint32_t
connection_get_int32(sdb_conn_t *conn, size_t offset)
{
sdb_log(SDB_LOG_DEBUG, "frontend: Handling command %u (len: %u)",
conn->cmd, conn->cmd_len);
+ if ((! conn->username) && (conn->cmd != CONNECTION_STARTUP)) {
+ const char *errmsg = "Authentication required";
+ sdb_connection_send(conn, CONNECTION_ERROR,
+ (uint32_t)strlen(errmsg), errmsg);
+ return -1;
+ }
+
/* reset */
sdb_strbuf_sprintf(conn->errbuf, "");
status = sdb_fe_session_start(conn);
break;
+ case CONNECTION_QUERY:
+ {
+ sdb_llist_t *parsetree;
+ sdb_conn_node_t *node = NULL;
+
+ parsetree = sdb_fe_parse(sdb_strbuf_string(conn->buf),
+ (int)conn->cmd_len);
+ if (! parsetree) {
+ sdb_log(SDB_LOG_ERR, "frontend: Failed to parse query '%s'",
+ sdb_strbuf_string(conn->buf));
+ status = -1;
+ break;
+ }
+
+ switch (sdb_llist_len(parsetree)) {
+ case 0:
+ /* skipping empty command */
+ break;
+ case 1:
+ node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
+ break;
+
+ default:
+ sdb_log(SDB_LOG_WARNING, "frontend: Ignoring %d command%s "
+ "in multi-statement query '%s'",
+ sdb_llist_len(parsetree) - 1,
+ sdb_llist_len(parsetree) == 2 ? "" : "s",
+ sdb_strbuf_string(conn->buf));
+ node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
+ }
+
+ if (node) {
+ status = sdb_fe_exec(conn, node);
+ sdb_object_deref(SDB_OBJ(node));
+ }
+
+ sdb_llist_destroy(parsetree);
+ break;
+ }
+
+ case CONNECTION_FETCH:
+ status = sdb_fe_fetch(conn, sdb_strbuf_string(conn->buf));
+ break;
case CONNECTION_LIST:
status = sdb_fe_list(conn);
break;
default:
{
- sdb_log(SDB_LOG_WARNING, "frontend: Ignoring invalid command");
+ sdb_log(SDB_LOG_WARNING, "frontend: Ignoring invalid command %#x",
+ conn->cmd);
sdb_strbuf_sprintf(conn->errbuf, "Invalid command %#x", conn->cmd);
status = -1;
break;
* public API
*/
+int
+sdb_connection_enable_logging(void)
+{
+ return sdb_plugin_register_log("connection-logger", connection_log,
+ /* user_data = */ NULL);
+} /* sdb_connection_enable_logging */
+
sdb_conn_t *
sdb_connection_accept(int fd)
{
{
ssize_t n = 0;
+ sdb_conn_set_ctx(conn);
+
while (42) {
ssize_t status = connection_read(conn);
n += status;
}
+
+ sdb_conn_set_ctx(NULL);
return n;
} /* sdb_connection_read */