/mandos/release

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Viewing changes to plugins.d/askpass-fifo.c

  • Committer: Teddy Hogeborn
  • Date: 2015-08-10 09:00:23 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 325.
  • Revision ID: teddy@recompile.se-20150810090023-fz6vjqr7zf33e2tf
Support the standard org.freedesktop.DBus.ObjectManager interface.

Now that the D-Bus standard has an interface to keep track of new and
removed objects, use that instead of our own methods.  This deprecates
our D-Bus methods "GetAllClients" and "GetAllClientsWithProperties"
and the signals "ClientAdded" and "ClientRemoved", all on the server
interface "se.recompile.Mandos".

* DBUS-API: Removed references to deprecated methods and signals;
  insert reference to the org.freedesktop.DBus.ObjectManager
  interface.
* mandos (DBusObjectWithProperties._get_all_interface_names): New.
  (dbus.OBJECT_MANAGER_IFACE): If not present, monkey patch.
  (DBusObjectWithObjectManager): New.
  (main/MandosDBusService): Inherit from DBusObjectWithObjectManager.
  (main/MandosDBusService.ClientRemoved): Annotate as deprecated.
  (main/MandosDBusService.GetAllClients): - '' -
  (main/MandosDBusService.GetAllClientsWithProperties): Annotate as
                                                        deprecated.
                                                        Also only
                                                        return
                                                        properties on
                                                        client
                                                        interface.
  (main/MandosDBusService.RemoveClient): Call client_removed_signal
                                         instead of ClientRemoved.
  (main/MandosDBusService.GetManagedObjects): New.
  (main/MandosDBusService.client_added_signal): New.
  (main/MandosDBusService.client_removed_signal): - '' -
  (main/cleanup): Call "client_removed_signal" instead of sending
                  "ClientRemoved" signal directly.
  (main): Call "client_added_signal" instead of sending "ClientAdded"
          signal directly.
* mandos-ctl: Use GetManagedObjects instead of
              GetAllClientsWithProperties.  Also, show better error
              message in case of failure to connect to the D-Bus

* mandos-monitor (MandosClientPropertyCache.properties_changed):
  Bug fix; only update properties on client interface.
  (UserInterface.find_and_remove_client): Change to accept arguments
                                          from InterfacesRemoved
                                          signal.  Also, bug fix:
                                          working error message when
                                          removing unknown client.
  (UserInterface.add_new_client): Change to accept arguments from
                                  InterfacesRemoved signal.  Pass
                                  properties to MandosClientWidget
                                  constructor.
  (UserInterface.run): Connect find_and_remove_client method to
                       InterfacesRemoved signal and the add_new_client
                       method to the InterfacesAdded signal.

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Lines of Context:
plugins.d/askpass-fifo.c
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/*
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 * Askpass-FIFO - Read a password from a FIFO and output it
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 * 
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 * Copyright © 2008-2011 Teddy Hogeborn
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 * Copyright © 2008-2011 Björn Påhlsson
 
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 * Copyright © 2008-2015 Teddy Hogeborn
 
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 * Copyright © 2008-2015 Björn Påhlsson
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 * 
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 * This program is free software: you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License as
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 */
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#define _GNU_SOURCE             /* TEMP_FAILURE_RETRY() */
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#include <sys/types.h>          /* ssize_t */
 
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#include <sys/types.h>          /* uid_t, gid_t, ssize_t */
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#include <sys/stat.h>           /* mkfifo(), S_IRUSR, S_IWUSR */
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#include <iso646.h>             /* and */
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#include <errno.h>              /* errno, EACCES, ENOTDIR, ELOOP,
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#include <string.h>             /* strerror() */
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#include <stdarg.h>             /* va_list, va_start(), ... */
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uid_t uid = 65534;
 
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gid_t gid = 65534;
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/* Function to use when printing errors */
 
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__attribute__((format (gnu_printf, 3, 4)))
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void error_plus(int status, int errnum, const char *formatstring,
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                ...){
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  va_list ap;
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  va_start(ap, formatstring);
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  ret = vasprintf(&text, formatstring, ap);
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  if (ret == -1){
 
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  if(ret == -1){
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    fprintf(stderr, "Mandos plugin %s: ",
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            program_invocation_short_name);
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    vfprintf(stderr, formatstring, ap);
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  int ret = 0;
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  ssize_t sret;
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  uid = getuid();
 
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  gid = getgid();
 
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  /* Create FIFO */
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  const char passfifo[] = "/lib/cryptsetup/passfifo";
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  ret = mkfifo(passfifo, S_IRUSR | S_IWUSR);
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    }
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  }
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  /* Lower group privileges  */
 
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  if(setgid(gid) == -1){
 
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    error_plus(0, errno, "setgid");
 
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  }
 
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  /* Lower user privileges */
 
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  if(setuid(uid) == -1){
 
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    error_plus(0, errno, "setuid");
 
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  }
 
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  /* Read from FIFO */
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  char *buf = NULL;
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  size_t buf_len = 0;