diff options
Diffstat (limited to 'qemu/roms/ipxe/src/net/tcp/syslogs.c')
-rw-r--r-- | qemu/roms/ipxe/src/net/tcp/syslogs.c | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/qemu/roms/ipxe/src/net/tcp/syslogs.c b/qemu/roms/ipxe/src/net/tcp/syslogs.c deleted file mode 100644 index 0c07f86d5..000000000 --- a/qemu/roms/ipxe/src/net/tcp/syslogs.c +++ /dev/null @@ -1,273 +0,0 @@ -/* - * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -/** @file - * - * Encrypted syslog protocol - * - */ - -#include <stdint.h> -#include <stdlib.h> -#include <byteswap.h> -#include <ipxe/xfer.h> -#include <ipxe/open.h> -#include <ipxe/tcpip.h> -#include <ipxe/dhcp.h> -#include <ipxe/settings.h> -#include <ipxe/console.h> -#include <ipxe/lineconsole.h> -#include <ipxe/tls.h> -#include <ipxe/syslog.h> -#include <config/console.h> - -/* Set default console usage if applicable */ -#if ! ( defined ( CONSOLE_SYSLOGS ) && CONSOLE_EXPLICIT ( CONSOLE_SYSLOGS ) ) -#undef CONSOLE_SYSLOGS -#define CONSOLE_SYSLOGS ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_TUI ) -#endif - -struct console_driver syslogs_console __console_driver; - -/** The encrypted syslog server */ -static struct sockaddr_tcpip logserver = { - .st_port = htons ( SYSLOG_PORT ), -}; - -/** - * Handle encrypted syslog TLS interface close - * - * @v intf Interface - * @v rc Reason for close - */ -static void syslogs_close ( struct interface *intf __unused, int rc ) { - - DBG ( "SYSLOGS console disconnected: %s\n", strerror ( rc ) ); -} - -/** - * Handle encrypted syslog TLS interface window change - * - * @v intf Interface - */ -static void syslogs_window_changed ( struct interface *intf ) { - - /* Mark console as enabled when window first opens, indicating - * that TLS negotiation is complete. (Do not disable console - * when window closes again, since TCP will close the window - * whenever there is unACKed data.) - */ - if ( xfer_window ( intf ) ) { - if ( syslogs_console.disabled ) - DBG ( "SYSLOGS console connected\n" ); - syslogs_console.disabled = 0; - } -} - -/** Encrypted syslog TLS interface operations */ -static struct interface_operation syslogs_operations[] = { - INTF_OP ( xfer_window_changed, struct interface *, - syslogs_window_changed ), - INTF_OP ( intf_close, struct interface *, syslogs_close ), -}; - -/** Encrypted syslog TLS interface descriptor */ -static struct interface_descriptor syslogs_desc = - INTF_DESC_PURE ( syslogs_operations ); - -/** The encrypted syslog TLS interface */ -static struct interface syslogs = INTF_INIT ( syslogs_desc ); - -/****************************************************************************** - * - * Console driver - * - ****************************************************************************** - */ - -/** Encrypted syslog line buffer */ -static char syslogs_buffer[SYSLOG_BUFSIZE]; - -/** Encrypted syslog severity */ -static unsigned int syslogs_severity = SYSLOG_DEFAULT_SEVERITY; - -/** - * Handle ANSI set encrypted syslog priority (private sequence) - * - * @v ctx ANSI escape sequence context - * @v count Parameter count - * @v params List of graphic rendition aspects - */ -static void syslogs_handle_priority ( struct ansiesc_context *ctx __unused, - unsigned int count __unused, - int params[] ) { - if ( params[0] >= 0 ) { - syslogs_severity = params[0]; - } else { - syslogs_severity = SYSLOG_DEFAULT_SEVERITY; - } -} - -/** Encrypted syslog ANSI escape sequence handlers */ -static struct ansiesc_handler syslogs_handlers[] = { - { ANSIESC_LOG_PRIORITY, syslogs_handle_priority }, - { 0, NULL } -}; - -/** Encrypted syslog line console */ -static struct line_console syslogs_line = { - .buffer = syslogs_buffer, - .len = sizeof ( syslogs_buffer ), - .ctx = { - .handlers = syslogs_handlers, - }, -}; - -/** Encrypted syslog recursion marker */ -static int syslogs_entered; - -/** - * Print a character to encrypted syslog console - * - * @v character Character to be printed - */ -static void syslogs_putchar ( int character ) { - int rc; - - /* Ignore if we are already mid-logging */ - if ( syslogs_entered ) - return; - - /* Fill line buffer */ - if ( line_putchar ( &syslogs_line, character ) == 0 ) - return; - - /* Guard against re-entry */ - syslogs_entered = 1; - - /* Send log message */ - if ( ( rc = syslog_send ( &syslogs, syslogs_severity, - syslogs_buffer, "\n" ) ) != 0 ) { - DBG ( "SYSLOGS could not send log message: %s\n", - strerror ( rc ) ); - } - - /* Clear re-entry flag */ - syslogs_entered = 0; -} - -/** Encrypted syslog console driver */ -struct console_driver syslogs_console __console_driver = { - .putchar = syslogs_putchar, - .disabled = CONSOLE_DISABLED, - .usage = CONSOLE_SYSLOGS, -}; - -/****************************************************************************** - * - * Settings - * - ****************************************************************************** - */ - -/** Encrypted syslog server setting */ -const struct setting syslogs_setting __setting ( SETTING_MISC, syslogs ) = { - .name = "syslogs", - .description = "Encrypted syslog server", - .tag = DHCP_EB_SYSLOGS_SERVER, - .type = &setting_type_string, -}; - -/** - * Apply encrypted syslog settings - * - * @ret rc Return status code - */ -static int apply_syslogs_settings ( void ) { - static char *old_server; - char *server; - struct interface *socket; - int rc; - - /* Fetch log server */ - fetch_string_setting_copy ( NULL, &syslogs_setting, &server ); - - /* Do nothing unless log server has changed */ - if ( ( ( server == NULL ) && ( old_server == NULL ) ) || - ( ( server != NULL ) && ( old_server != NULL ) && - ( strcmp ( server, old_server ) == 0 ) ) ) { - rc = 0; - goto out_no_change; - } - free ( old_server ); - old_server = NULL; - - /* Reset encrypted syslog connection */ - syslogs_console.disabled = CONSOLE_DISABLED; - intf_restart ( &syslogs, 0 ); - - /* Do nothing unless we have a log server */ - if ( ! server ) { - DBG ( "SYSLOGS has no log server\n" ); - rc = 0; - goto out_no_server; - } - - /* Add TLS filter */ - if ( ( rc = add_tls ( &syslogs, server, &socket ) ) != 0 ) { - DBG ( "SYSLOGS cannot create TLS filter: %s\n", - strerror ( rc ) ); - goto err_add_tls; - } - - /* Connect to log server */ - if ( ( rc = xfer_open_named_socket ( socket, SOCK_STREAM, - (( struct sockaddr *) &logserver ), - server, NULL ) ) != 0 ) { - DBG ( "SYSLOGS cannot connect to log server: %s\n", - strerror ( rc ) ); - goto err_open_named_socket; - } - DBG ( "SYSLOGS using log server %s\n", server ); - - /* Record log server */ - old_server = server; - server = NULL; - - /* Success */ - rc = 0; - - err_open_named_socket: - err_add_tls: - out_no_server: - out_no_change: - free ( server ); - return rc; -} - -/** Encrypted syslog settings applicator */ -struct settings_applicator syslogs_applicator __settings_applicator = { - .apply = apply_syslogs_settings, -}; |