frontend: Implemented the CONNECTION_QUERY command.

[sysdb.git] / src / frontend / connection.c

diff --git a/src/frontend/connection.c b/src/frontend/connection.c
index 962cd9cf8d9a14f9a3bc2f2a864e993958eb467d..72041ff723633fab6a932d6cd408ef4665f95b49 100644 (file)
--- a/src/frontend/connection.c
+++ b/src/frontend/connection.c
@@ -26,10 +26,11 @@
  */
 
 #include "sysdb.h"
-#include "core/error.h"
 #include "core/object.h"
 #include "frontend/connection-private.h"
+#include "utils/error.h"
 #include "utils/strbuf.h"
+#include "utils/proto.h"
 
 #include <assert.h>
 #include <errno.h>
@@ -183,13 +184,49 @@ command_handle(sdb_conn_t *conn)
                        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);
+               }
+
                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;
@@ -203,7 +240,7 @@ command_handle(sdb_conn_t *conn)
 
        /* remove the command from the buffer */
        if (conn->cmd_len)
-               sdb_strbuf_skip(conn->buf, conn->cmd_len);
+               sdb_strbuf_skip(conn->buf, 0, conn->cmd_len);
        conn->cmd = CONNECTION_IDLE;
        conn->cmd_len = 0;
        return status;
@@ -223,7 +260,7 @@ command_init(sdb_conn_t *conn)
        len = 2 * sizeof(uint32_t);
        if (conn->cmd == CONNECTION_IDLE)
                len += conn->cmd_len;
-       sdb_strbuf_skip(conn->buf, len);
+       sdb_strbuf_skip(conn->buf, 0, len);
        return 0;
 } /* command_init */
 
@@ -301,50 +338,20 @@ ssize_t
 sdb_connection_send(sdb_conn_t *conn, uint32_t code,
                uint32_t msg_len, const char *msg)
 {
-       size_t len = 2 * sizeof(uint32_t) + msg_len;
-       char buffer[len];
-       char *buf;
-
-       uint32_t tmp;
+       ssize_t status;
 
        if ((! conn) || (conn->fd < 0))
                return -1;
 
-       tmp = htonl(code);
-       memcpy(buffer, &tmp, sizeof(uint32_t));
-
-       tmp = htonl(msg_len);
-       memcpy(buffer + sizeof(uint32_t), &tmp, sizeof(uint32_t));
-
-       if (msg_len)
-               memcpy(buffer + 2 * sizeof(uint32_t), msg, msg_len);
-
-       buf = buffer;
-       while (len > 0) {
-               ssize_t status;
+       status = sdb_proto_send_msg(conn->fd, code, msg_len, msg);
+       if (status < 0) {
+               char errbuf[1024];
 
-               /* XXX: use select() */
-
-               errno = 0;
-               status = write(conn->fd, buf, len);
-               if (status < 0) {
-                       char errbuf[1024];
-
-                       if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
-                               continue;
-                       if (errno == EINTR)
-                               continue;
-
-                       sdb_log(SDB_LOG_ERR, "frontend: Failed to send msg "
-                                       "(code: %u, len: %u) to client: %s", code, msg_len,
-                                       sdb_strerror(errno, errbuf, sizeof(errbuf)));
-                       return status;
-               }
-
-               len -= (size_t)status;
-               buf += status;
+               sdb_log(SDB_LOG_ERR, "frontend: Failed to send msg "
+                               "(code: %u, len: %u) to client: %s", code, msg_len,
+                               sdb_strerror(errno, errbuf, sizeof(errbuf)));
        }
-       return (ssize_t)len;
+       return status;
 } /* sdb_connection_send */
 
 int