src/lib-smtp/smtp-server-cmd-noop.c

/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "smtp-syntax.h"

#include "smtp-server-private.h"

/* NOOP command */

void smtp_server_cmd_noop(struct smtp_server_cmd_ctx *cmd,
              const char *params)
{
    struct smtp_server_connection *conn = cmd->conn;
    struct smtp_server_command *command = cmd->cmd;
    const struct smtp_server_callbacks *callbacks = conn->callbacks;
    int ret;

    /* "NOOP" [ SP String ] CRLF */
    if (*params != '\0' && smtp_string_parse(params, NULL, NULL) < 0) {
        smtp_server_reply(cmd, 501, "5.5.4", "Invalid parameters");
        return;
    }

    smtp_server_command_input_lock(cmd);

    smtp_server_command_ref(command);
    if (callbacks != NULL && callbacks->conn_cmd_noop != NULL) {
        /* specific implementation of NOOP command */
        if ((ret=callbacks->conn_cmd_noop(conn->context, cmd)) <= 0) {
            i_assert(ret == 0 ||
                 smtp_server_command_is_replied(command));
            /* command is waiting for external event or it failed */
            smtp_server_command_unref(&command);
            return;
        }
    }
    if (!smtp_server_command_is_replied(command))
        smtp_server_reply(cmd, 250, "2.0.0", "OK");
    smtp_server_command_unref(&command);
}