mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-22 10:19:57 +01:00
Check that the socket is well and served by us.
This commit is contained in:
Werner Koch
parent
738f3c74b5
commit
8997c155e3
37
NEWS
37
NEWS
@ -1,42 +1,46 @@
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Noteworthy changes in version 2.0.10 (unreleased)
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-------------------------------------------------
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* New keyserver helper gpg2keys_kdns as generic DNS CERT lookup. Run
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with --help for a short description. Requires the ADNS library.
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* [gpg] New keyserver helper gpg2keys_kdns as generic DNS CERT
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lookup. Run with --help for a short description. Requires the
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ADNS library.
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* [gpg] New mechanisms "local" and "nodefault" for --auto-key-locate.
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Fixed a few problems with this option.
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* [w32] Initialized the socket subsystem for all keyserver helpers.
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* [w32] The sysconf directory has been moved from a subdirectory of
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the installation directory to %CSIDL_COMMON_APPDATA%/GNU/etc/gnupg.
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* [gpg] New command --locate-keys.
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* [gpg] New options --with-sig-list and --with-sig-check.
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* [gpg] The option "-sat" is no longer an alias for --clearsign.
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* [gpgsm] Made --output option work with --export-secret-key-p12.
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* [gpg-connect-agent] Accept commands given as command line arguments.
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* [gpg] The option --fixed-list-mode is now implicitly used and obsolete.
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* [gpg] New control statement %ask-passphrase for the unattended key
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generation.
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* gpgsm now uses AES by default.
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* [gpgsm] Now uses AES by default.
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* gpg-preset-passphrase works again.
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* [gpgsm] Made --output option work with --export-secret-key-p12.
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* [gpg-agent] Terminate process if the own listening socket is not
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anymore served by ourself.
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* [scdaemon] Made it more robust on W32.
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* [gpg-connect-agent] Accept commands given as command line arguments.
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* [w32] Initialized the socket subsystem for all keyserver helpers.
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* [w32] The sysconf directory has been moved from a subdirectory of
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the installation directory to %CSIDL_COMMON_APPDATA%/GNU/etc/gnupg.
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* The gpg-preset-passphrase mechanism works again.
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* Admin PINs are cached again (bug in 2.0.9).
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* Support for version 2 OpenPGP cards.
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* [scdaemon] Made it more robust on W32.
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* Libgcrypt 1.4 is now required.
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@ -635,7 +639,8 @@ Noteworthy changes in version 1.9.0 (2003-08-05)
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development branch.
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Copyright 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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Copyright 2002, 2003, 2004, 2005, 2006, 2007,
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2008 Free Software Foundation, Inc.
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This file is free software; as a special exception the author gives
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unlimited permission to copy and/or distribute it, with or without
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@ -1,3 +1,16 @@
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2008-10-29 Werner Koch <wk@g10code.com>
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* gpg-agent.c (main): Move USE_STANDARD_SOCKET to the outer scope.
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(create_socket_name): Remove arg USE_STANDARD_SOCKET. Change all
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callers.
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(create_server_socket): Remove IS_STANDARD_NAME and replace it by
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USE_STANDARD_SOCKET. Change all callers.
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(check_own_socket_running): New.
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(check_own_socket, check_own_socket_thread): New.
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(handle_tick): Check server socket once a minute.
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(handle_connections): Remove the extra pth_wait in the shutdown
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case.
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2008-10-20 Werner Koch <wk@g10code.com>
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* command.c (cmd_geteventcounter): Mark unused arg.
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@ -194,9 +194,14 @@ static ARGPARSE_OPTS opts[] = {
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#define TIMERTICK_INTERVAL (2) /* Seconds. */
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#endif
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/* flag to indicate that a shutdown was requested */
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/* Flag to indicate that a shutdown was requested. */
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static int shutdown_pending;
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/* Counter for the currently running own socket checks. */
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static int check_own_socket_running;
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/* True if we are listening on the standard socket. */
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static int use_standard_socket;
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/* It is possible that we are currently running under setuid permissions */
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static int maybe_setuid = 1;
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@ -241,10 +246,8 @@ static pid_t parent_pid = (pid_t)(-1);
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Local prototypes.
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*/
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static char *create_socket_name (int use_standard_socket,
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char *standard_name, char *template);
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static gnupg_fd_t create_server_socket (int is_standard_name, char *name,
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int is_ssh,
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static char *create_socket_name (char *standard_name, char *template);
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static gnupg_fd_t create_server_socket (char *name, int is_ssh,
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assuan_sock_nonce_t *nonce);
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static void create_directories (void);
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@ -253,6 +256,7 @@ static void agent_deinit_default_ctrl (ctrl_t ctrl);
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static void handle_connections (gnupg_fd_t listen_fd,
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gnupg_fd_t listen_fd_ssh);
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static void check_own_socket (void);
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static int check_for_running_agent (int silent, int mode);
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/* Pth wrapper function definitions. */
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@ -494,7 +498,6 @@ main (int argc, char **argv )
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char *logfile = NULL;
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int debug_wait = 0;
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int gpgconf_list = 0;
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int use_standard_socket = 0;
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gpg_error_t err;
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const char *env_file_name = NULL;
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@ -895,19 +898,15 @@ main (int argc, char **argv )
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/* Create the sockets. */
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socket_name = create_socket_name (use_standard_socket,
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"S.gpg-agent",
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"/tmp/gpg-XXXXXX/S.gpg-agent");
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socket_name = create_socket_name
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("S.gpg-agent", "/tmp/gpg-XXXXXX/S.gpg-agent");
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if (opt.ssh_support)
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socket_name_ssh = create_socket_name (use_standard_socket,
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"S.gpg-agent.ssh",
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"/tmp/gpg-XXXXXX/S.gpg-agent.ssh");
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socket_name_ssh = create_socket_name
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("S.gpg-agent.ssh", "/tmp/gpg-XXXXXX/S.gpg-agent.ssh");
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fd = create_server_socket (use_standard_socket, socket_name, 0,
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&socket_nonce);
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fd = create_server_socket (socket_name, 0, &socket_nonce);
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if (opt.ssh_support)
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fd_ssh = create_server_socket (use_standard_socket, socket_name_ssh, 1,
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&socket_nonce_ssh);
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fd_ssh = create_server_socket (socket_name_ssh, 1, &socket_nonce_ssh);
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else
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fd_ssh = GNUPG_INVALID_FD;
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@ -1311,8 +1310,7 @@ get_agent_scd_notify_event (void)
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terminates the process in case of an error. Returns: Pointer to an
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allocated string with the absolute name of the socket used. */
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static char *
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create_socket_name (int use_standard_socket,
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char *standard_name, char *template)
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create_socket_name (char *standard_name, char *template)
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{
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char *name, *p;
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@ -1349,14 +1347,12 @@ create_socket_name (int use_standard_socket,
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/* Create a Unix domain socket with NAME. IS_STANDARD_NAME indicates
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whether a non-random socket is used. Returns the file descriptor
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/* Create a Unix domain socket with NAME. Returns the file descriptor
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or terminates the process in case of an error. Not that this
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function needs to be used for the regular socket first and only then
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for the ssh socket. */
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function needs to be used for the regular socket first and only
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then for the ssh socket. */
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static gnupg_fd_t
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create_server_socket (int is_standard_name, char *name, int is_ssh,
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assuan_sock_nonce_t *nonce)
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create_server_socket (char *name, int is_ssh, assuan_sock_nonce_t *nonce)
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{
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struct sockaddr_un *serv_addr;
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socklen_t len;
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@ -1383,7 +1379,7 @@ create_server_socket (int is_standard_name, char *name, int is_ssh,
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+ strlen (serv_addr->sun_path) + 1);
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rc = assuan_sock_bind (fd, (struct sockaddr*) serv_addr, len);
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if (is_standard_name && rc == -1 && errno == EADDRINUSE)
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if (use_standard_socket && rc == -1 && errno == EADDRINUSE)
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{
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/* Check whether a gpg-agent is already running on the standard
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socket. We do this test only if this is not the ssh socket.
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@ -1416,7 +1412,7 @@ create_server_socket (int is_standard_name, char *name, int is_ssh,
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gpg_strerror (gpg_error_from_errno (errno)));
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assuan_sock_close (fd);
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if (is_standard_name)
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if (use_standard_socket)
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*name = 0; /* Inhibit removal of the socket by cleanup(). */
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agent_exit (2);
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}
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@ -1530,6 +1526,11 @@ create_directories (void)
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static void
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handle_tick (void)
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{
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static time_t last_minute;
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if (!last_minute)
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last_minute = time (NULL);
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/* Check whether the scdaemon has died and cleanup in this case. */
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agent_scd_check_aliveness ();
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@ -1548,6 +1549,14 @@ handle_tick (void)
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}
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}
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#endif /*HAVE_W32_SYSTEM*/
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/* Code to be run every minute. */
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if (last_minute + 60 <= time (NULL))
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{
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check_own_socket ();
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last_minute = time (NULL);
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}
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}
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@ -1755,13 +1764,9 @@ handle_connections (gnupg_fd_t listen_fd, gnupg_fd_t listen_fd_ssh)
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if (pth_ctrl (PTH_CTRL_GETTHREADS) == 1)
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break; /* ready */
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/* Do not accept anymore connections and wait for existing
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connections to terminate */
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signo = 0;
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pth_wait (ev);
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if (pth_event_occurred (ev) && signo)
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handle_signal (signo);
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continue;
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/* Do not accept new connections but keep on running the
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loop to cope with the timer events. */
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FD_ZERO (&fdset);
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}
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/* Create a timeout event if needed. */
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@ -1828,7 +1833,7 @@ handle_connections (gnupg_fd_t listen_fd, gnupg_fd_t listen_fd_ssh)
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new thread. Thus we need to block those signals. */
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pth_sigmask (SIG_BLOCK, &sigs, &oldsigs);
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if (FD_ISSET (FD2INT (listen_fd), &read_fdset))
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if (!shutdown_pending && FD_ISSET (FD2INT (listen_fd), &read_fdset))
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{
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ctrl_t ctrl;
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@ -1865,7 +1870,7 @@ handle_connections (gnupg_fd_t listen_fd, gnupg_fd_t listen_fd_ssh)
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fd = GNUPG_INVALID_FD;
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}
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if (listen_fd_ssh != GNUPG_INVALID_FD
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if (!shutdown_pending && listen_fd_ssh != GNUPG_INVALID_FD
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&& FD_ISSET ( FD2INT (listen_fd_ssh), &read_fdset))
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{
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ctrl_t ctrl;
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@ -1917,6 +1922,111 @@ handle_connections (gnupg_fd_t listen_fd, gnupg_fd_t listen_fd_ssh)
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}
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/* Helper for check_own_socket. */
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static int
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check_own_socket_pid_cb (void *opaque, const void *buffer, size_t length)
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{
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membuf_t *mb = opaque;
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put_membuf (mb, buffer, length);
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return 0;
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}
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/* The thread running the actual check. We need to run this in a
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separate thread so that check_own_thread can be called from the
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timer tick. */
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static void *
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check_own_socket_thread (void *arg)
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{
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int rc;
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char *sockname = arg;
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assuan_context_t ctx;
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membuf_t mb;
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char *buffer;
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check_own_socket_running++;
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rc = assuan_socket_connect (&ctx, sockname, (pid_t)(-1));
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xfree (sockname);
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if (rc)
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{
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log_error ("can't connect my own socket: %s\n", gpg_strerror (rc));
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goto leave;
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}
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init_membuf (&mb, 100);
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rc = assuan_transact (ctx, "GETINFO pid", check_own_socket_pid_cb, &mb,
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NULL, NULL, NULL, NULL);
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put_membuf (&mb, "", 1);
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buffer = get_membuf (&mb, NULL);
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if (rc || !buffer)
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{
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log_error ("sending command \"%s\" to my own socket failed: %s\n",
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"GETINFO pid", gpg_strerror (rc));
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rc = 1;
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}
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else if ( (pid_t)strtoul (buffer, NULL, 10) != getpid ())
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{
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log_error ("socket is now serviced by another server\n");
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rc = 1;
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}
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else if (opt.verbose)
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log_error ("socket is still served by this server\n");
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xfree (buffer);
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assuan_disconnect (ctx);
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leave:
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if (rc)
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{
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/* We may not remove the socket as it is now in use by another
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server. Setting the name to empty does this. */
|
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if (socket_name)
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*socket_name = 0;
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if (socket_name_ssh)
|
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*socket_name_ssh = 0;
|
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shutdown_pending = 2;
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log_info ("this process is useless - shutting down\n");
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}
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check_own_socket_running--;
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return NULL;
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}
|
||||
|
||||
|
||||
/* Check whether we are still listening on our own socket. In case
|
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another gpg-agent process started after us has taken ownership of
|
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our socket, we woul linger around without any real taks. Thus we
|
||||
better check once in a while whether we are really needed. */
|
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static void
|
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check_own_socket (void)
|
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{
|
||||
char *sockname;
|
||||
pth_attr_t tattr;
|
||||
|
||||
if (!use_standard_socket)
|
||||
return; /* This check makes only sense in standard socket mode. */
|
||||
|
||||
if (check_own_socket_running || shutdown_pending)
|
||||
return; /* Still running or already shutting down. */
|
||||
|
||||
sockname = make_filename (opt.homedir, "S.gpg-agent", NULL);
|
||||
if (!sockname)
|
||||
return; /* Out of memory. */
|
||||
|
||||
tattr = pth_attr_new();
|
||||
pth_attr_set (tattr, PTH_ATTR_JOINABLE, 0);
|
||||
pth_attr_set (tattr, PTH_ATTR_STACK_SIZE, 256*1024);
|
||||
pth_attr_set (tattr, PTH_ATTR_NAME, "check-owb-socket");
|
||||
|
||||
if (!pth_spawn (tattr, check_own_socket_thread, sockname))
|
||||
log_error ("error spawning check_own_socket_thread: %s\n",
|
||||
strerror (errno) );
|
||||
pth_attr_destroy (tattr);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Figure out whether an agent is available and running. Prints an
|
||||
error if not. If SILENT is true, no messages are printed. Usually
|
||||
started with MODE 0. Returns 0 if the agent is running. */
|
||||
|
||||
@ -1,5 +1,10 @@
|
||||
2008-10-29 Werner Koch <wk@g10code.com>
|
||||
|
||||
* stringhelp.c (make_filename): Implement using macros. Factor some
|
||||
code out to ..
|
||||
(change_slashes): New.
|
||||
(make_filename_try): New.
|
||||
|
||||
* w32-gettext.c (gettext): Return if no domain is loaded.
|
||||
Reported by Tom Pegios.
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
/* stringhelp.c - standard string helper functions
|
||||
* Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005,
|
||||
* 2006, 2007 Free Software Foundation, Inc.
|
||||
* 2006, 2007, 2008 Free Software Foundation, Inc.
|
||||
*
|
||||
* This file is part of JNLIB.
|
||||
*
|
||||
@ -34,6 +34,28 @@
|
||||
|
||||
#define tohex_lower(n) ((n) < 10 ? ((n) + '0') : (((n) - 10) + 'a'))
|
||||
|
||||
/* Sometimes we want to avoid mixing slashes and backslashes on W32
|
||||
and prefer backslashes. There is usual no problem with mixing
|
||||
them, however a very few W32 API calls can't grok plain slashes.
|
||||
Printing filenames with mixed slashes also looks a bit strange.
|
||||
This function has no effext on POSIX. */
|
||||
static inline char *
|
||||
change_slashes (char *name)
|
||||
{
|
||||
char *p;
|
||||
|
||||
#ifdef HAVE_DRIVE_LETTERS
|
||||
if (strchr (name, '\\'))
|
||||
{
|
||||
for (p=name; *p; p++)
|
||||
if (*p == '/')
|
||||
*p = '\\';
|
||||
}
|
||||
#endif /*HAVE_DRIVE_LETTERS*/
|
||||
return name;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Look for the substring SUB in buffer and return a pointer to that
|
||||
* substring in BUFFER or NULL if not found.
|
||||
@ -290,56 +312,65 @@ make_dirname(const char *filepath)
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Implementation of make_filename and make_filename_try. We need to
|
||||
use macros here toa void the use of the soemtimes problematic
|
||||
va_copy fucntion which is not available on all systems. */
|
||||
#define MAKE_FILENAME_PART1 \
|
||||
va_list arg_ptr; \
|
||||
size_t n; \
|
||||
const char *s; \
|
||||
char *name, *home, *p; \
|
||||
\
|
||||
va_start (arg_ptr, first_part); \
|
||||
n = strlen (first_part) + 1; \
|
||||
while ( (s = va_arg (arg_ptr, const char *)) ) \
|
||||
n += strlen(s) + 1; \
|
||||
va_end(arg_ptr); \
|
||||
\
|
||||
home = NULL; \
|
||||
if ( *first_part == '~' && first_part[1] == '/' \
|
||||
&& (home = getenv("HOME")) && *home ) \
|
||||
n += strlen (home);
|
||||
|
||||
#define MAKE_FILENAME_PART2 \
|
||||
p = (home \
|
||||
? stpcpy (stpcpy (name,home), first_part + 1)\
|
||||
: stpcpy(name, first_part)); \
|
||||
\
|
||||
va_start (arg_ptr, first_part); \
|
||||
while ( (s = va_arg(arg_ptr, const char *)) ) \
|
||||
p = stpcpy (stpcpy (p,"/"), s); \
|
||||
va_end(arg_ptr); \
|
||||
return change_slashes (name);
|
||||
|
||||
/****************
|
||||
* Construct a filename from the NULL terminated list of parts.
|
||||
* Tilde expansion is done here.
|
||||
*/
|
||||
|
||||
/* Construct a filename from the NULL terminated list of parts. Tilde
|
||||
expansion is done here. This function will never fail. */
|
||||
char *
|
||||
make_filename( const char *first_part, ... )
|
||||
make_filename (const char *first_part, ... )
|
||||
{
|
||||
va_list arg_ptr ;
|
||||
size_t n;
|
||||
const char *s;
|
||||
char *name, *home, *p;
|
||||
|
||||
va_start (arg_ptr, first_part);
|
||||
n = strlen (first_part) + 1;
|
||||
while ( (s = va_arg (arg_ptr, const char *)) )
|
||||
n += strlen(s) + 1;
|
||||
va_end(arg_ptr);
|
||||
|
||||
home = NULL;
|
||||
if ( *first_part == '~' && first_part[1] == '/'
|
||||
&& (home = getenv("HOME")) && *home )
|
||||
n += strlen (home);
|
||||
|
||||
MAKE_FILENAME_PART1
|
||||
name = jnlib_xmalloc (n);
|
||||
p = (home
|
||||
? stpcpy (stpcpy (name,home), first_part + 1)
|
||||
: stpcpy(name, first_part));
|
||||
|
||||
va_start (arg_ptr, first_part) ;
|
||||
while ( (s = va_arg(arg_ptr, const char *)) )
|
||||
p = stpcpy (stpcpy (p,"/"), s);
|
||||
va_end(arg_ptr);
|
||||
|
||||
#ifdef HAVE_DRIVE_LETTERS
|
||||
/* We better avoid mixing slashes and backslashes and prefer
|
||||
backslashes. There is usual no problem with mixing them, however
|
||||
a very few W32 API calls can't grok plain slashes. Printing
|
||||
filenames with mixed slashes also looks a bit strange. */
|
||||
if (strchr (name, '\\'))
|
||||
{
|
||||
for (p=name; *p; p++)
|
||||
if (*p == '/')
|
||||
*p = '\\';
|
||||
}
|
||||
#endif /*HAVE_DRIVE_LETTERS*/
|
||||
return name;
|
||||
MAKE_FILENAME_PART2
|
||||
}
|
||||
|
||||
/* Construct a filename from the NULL terminated list of parts. Tilde
|
||||
expansion is done here. This function may return NULL on error. */
|
||||
char *
|
||||
make_filename_try (const char *first_part, ... )
|
||||
{
|
||||
MAKE_FILENAME_PART1
|
||||
name = jnlib_xmalloc (n);
|
||||
if (!name)
|
||||
return NULL;
|
||||
MAKE_FILENAME_PART2
|
||||
}
|
||||
#undef MAKE_FILENAME_PART1
|
||||
#undef MAKE_FILENAME_PART2
|
||||
|
||||
|
||||
|
||||
/* Compare whether the filenames are identical. This is a
|
||||
special version of strcmp() taking the semantics of filenames in
|
||||
account. Note that this function works only on the supplied names
|
||||
|
||||
@ -38,6 +38,7 @@ size_t length_sans_trailing_ws (const unsigned char *line, size_t len);
|
||||
char *make_basename(const char *filepath, const char *inputpath);
|
||||
char *make_dirname(const char *filepath);
|
||||
char *make_filename( const char *first_part, ... );
|
||||
char *make_filename_try (const char *first_part, ... );
|
||||
int compare_filenames( const char *a, const char *b );
|
||||
|
||||
int hextobyte (const char *s);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user