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Viewing changes to plugins.d/mandos-client.c

  • Committer: Teddy Hogeborn
  • Date: 2017-08-20 14:14:14 UTC
  • Revision ID: teddy@recompile.se-20170820141414-m034xuebg7ccaeui
Add some more restrictions to the systemd service file.

* mandos.service ([Service]/ProtectKernelTunables): New; set to "yes".
  ([Service]/ProtectControlGroups): - '' -

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plugins.d/mandos-client.c
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 * "browse_callback", and parts of "main".
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 * 
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 * Everything else is
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 * Copyright © 2008-2016 Teddy Hogeborn
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 * Copyright © 2008-2016 Björn Påhlsson
 
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 * Copyright © 2008-2017 Teddy Hogeborn
 
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 * Copyright © 2008-2017 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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                                   strtof(), abort() */
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#include <stdbool.h>            /* bool, false, true */
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#include <string.h>             /* strcmp(), strlen(), strerror(),
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                                   asprintf(), strncpy() */
 
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                                   asprintf(), strncpy(), strsignal()
 
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                                */
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#include <sys/ioctl.h>          /* ioctl */
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#include <sys/types.h>          /* socket(), inet_pton(), sockaddr,
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                                   sockaddr_in6, PF_INET6,
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                     safer_gnutls_strerror(ret));
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        dhparamsfilename = NULL;
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      }
 
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      free(params.data);
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    } while(false);
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  }
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  if(dhparamsfilename == NULL){
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    bool match = false;
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    {
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      char *interface = NULL;
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      while((interface=argz_next(mc->interfaces, mc->interfaces_size,
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                                 interface))){
 
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      while((interface = argz_next(mc->interfaces,
 
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                                   mc->interfaces_size,
 
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                                   interface))){
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        if(if_nametoindex(interface) == (unsigned int)if_index){
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          match = true;
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          break;
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           with an explicit route added with the server's address.
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           Avahi bug reference:
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           http://lists.freedesktop.org/archives/avahi/2010-February/001833.html
 
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           https://lists.freedesktop.org/archives/avahi/2010-February/001833.html
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           https://bugs.debian.org/587961
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        */
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        if(debug){
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                                               &decrypted_buffer, mc);
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    if(decrypted_buffer_size >= 0){
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      clearerr(stdout);
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      written = 0;
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      while(written < (size_t) decrypted_buffer_size){
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        if(quit_now){
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        }
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        written += (size_t)ret;
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      }
 
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      ret = fflush(stdout);
 
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      if(ret != 0){
 
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        int e = errno;
 
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        if(debug){
 
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          fprintf_plus(stderr, "Error writing encrypted data: %s\n",
 
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                       strerror(errno));
 
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        }
 
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        errno = e;
 
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        goto mandos_end;
 
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      }
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      retval = 0;
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    }
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  }
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  return retval;
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}
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__attribute__((nonnull))
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static void resolve_callback(AvahiSServiceResolver *r,
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                             AvahiIfIndex interface,
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                             AvahiProtocol proto,
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  /* Sleep checking until interface is running.
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     Check every 0.25s, up to total time of delay */
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  for(int i=0; i < delay * 4; i++){
 
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  for(int i = 0; i < delay * 4; i++){
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    if(interface_is_running(interface)){
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      break;
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    }
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  {
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    /* Work around Debian bug #633582:
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       <http://bugs.debian.org/633582> */
 
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       <https://bugs.debian.org/633582> */
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    /* Re-raise privileges */
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    ret = raise_privileges();
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 end:
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  if(debug){
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    fprintf_plus(stderr, "%s exiting\n", argv[0]);
 
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    if(signal_received){
 
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      fprintf_plus(stderr, "%s exiting due to signal %d: %s\n",
 
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                   argv[0], signal_received,
 
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                   strsignal(signal_received));
 
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    } else {
 
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      fprintf_plus(stderr, "%s exiting\n", argv[0]);
 
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    }
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  }
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  /* Cleanup things */
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      /* Take down the network interfaces which were brought up */
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      {
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        char *interface = NULL;
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        while((interface=argz_next(interfaces_to_take_down,
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                                   interfaces_to_take_down_size,
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                                   interface))){
 
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        while((interface = argz_next(interfaces_to_take_down,
 
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                                     interfaces_to_take_down_size,
 
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                                     interface))){
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          ret = take_down_interface(interface);
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          if(ret != 0){
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            errno = ret;