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Viewing changes to plugin-helpers/mandos-client-iprouteadddel.c

  • Committer: Teddy Hogeborn
  • Date: 2024-09-09 01:36:41 UTC
  • Revision ID: teddy@recompile.se-20240909013641-6zu6kx2f7meu134k
Make all required directories when installing

When installing into a normal system, one can assume that target
directories, such as /usr/bin, already exists.  But when installing
into a subdirectory for the purpose of creating a package, one cannot
assume that all directories already exist.  Therefore, when
installing, we must not check if any directories exist, and must
instead always create any directories we want to install into.

* Makefile (confdir/mandos.conf, confdir/clients.conf, install-html):
  Use the "-D" option to "install" instead of creating the directory
  separately.
  (install-server): Move creation of $(CONFDIR) down to before it is
  needed.  Don't check if the $(TMPFILES) or $(SYSUSERS) directories
  exist; instead create them by using the "-D" option to "install".
  Create the $(PREFIX)/sbin directory.  Always use
  "--target-directory" if possible; i.e. if the file name is the same.
  Create the $(DBUSPOLICYDIR) and $(DESTDIR)/etc/init.d directories by
  using the "-D" option to "install".  Don't check if the $(SYSTEMD)
  directory exists; instead create it by using the "-D" option to
  "install".  Create the $(DESTDIR)/etc/default and $(MANDIR)/man8
  directories by using the "-D" option to "install".  Create the
  $(MANDIR)/man5 directories explicitly.
  (install-client-nokey): Remove unnecessary creation of the
  $(CONFDIR) directory.  Don't check if the $(SYSUSERS) directory
  exists; instead create it by using the "-D" option to "install".
  Move the "--directory" argument to be the first argument, for
  clarity.  Create the $(PREFIX)/sbin directory.  Use the "-D"
  argument to "install" when installing
  $(INITRAMFSTOOLS)/hooks/mandos,
  $(INITRAMFSTOOLS)/conf.d/mandos-conf,
  $(INITRAMFSTOOLS)/conf-hooks.d/zz-mandos,
  $(INITRAMFSTOOLS)/scripts/init-premount/mandos,
  $(INITRAMFSTOOLS)/scripts/local-premount/mandos,
  $(DRACUTMODULE)/ask-password-mandos.path, and
  $(DRACUTMODULE)/dracut-module/ask-password-mandos.service.  Create
  the $(MANDIR)/man8 directory.

Reported-By: Erich Eckner <erich@eckner.net>
Thanks: Erich Eckner <erich@eckner.net> for analysis

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plugin-helpers/mandos-client-iprouteadddel.c
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/* 
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 * iprouteadddel - Add or delete direct route to a local IP address
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 * 
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 * Copyright © 2015-2016 Teddy Hogeborn
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 * Copyright © 2015-2016 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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 * published by the Free Software Foundation, either version 3 of the
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 * License, or (at your option) any later version.
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 * 
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 * This program is distributed in the hope that it will be useful, but
 
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 * Copyright © 2015-2018, 2021-2022 Teddy Hogeborn
 
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 * Copyright © 2015-2018, 2021-2022 Björn Påhlsson
 
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 * 
 
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 * This file is part of Mandos.
 
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 * 
 
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 * Mandos is free software: you can redistribute it and/or modify it
 
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 * under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation, either version 3 of the License, or
 
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 * (at your option) any later version.
 
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 * 
 
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 * Mandos is distributed in the hope that it will be useful, but
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 * WITHOUT ANY WARRANTY; without even the implied warranty of
15
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
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 * General Public License for more details.
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 * 
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 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see
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 * <http://www.gnu.org/licenses/>.
 
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 * along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
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 * 
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 * Contact the authors at <mandos@recompile.se>.
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 */
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#define _GNU_SOURCE             /* asprintf(),
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                                   program_invocation_short_name */
 
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#define _GNU_SOURCE             /* program_invocation_short_name */
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#include <stdbool.h>            /* bool, false, true */
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#include <stdio.h>              /* fprintf(), stderr, FILE, vfprintf */
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#include <errno.h>              /* program_invocation_short_name,
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                                   errno, perror(), EINVAL, ENOMEM */
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#include <stdarg.h>             /* va_list, va_start */
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#include <stdlib.h>             /* EXIT_SUCCESS */
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#include <argp.h>               /* struct argp_option, error_t, struct
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                                   argp_state, ARGP_KEY_ARG,
 
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#include <argp.h>               /* argp_program_version,
 
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                                   argp_program_bug_address,
 
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                                   struct argp_option,
 
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                                   struct argp_state, ARGP_KEY_ARG,
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                                   argp_usage(), ARGP_KEY_END,
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                                   ARGP_ERR_UNKNOWN, struct argp,
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                                   argp_parse() */
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#include <sysexits.h>           /* EX_USAGE, EX_OSERR */
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#include <netinet/ip.h>         /* sa_family_t, AF_INET6, AF_INET */
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#include <inttypes.h>           /* PRIdMAX, intmax_t */
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                                   argp_parse(), ARGP_IN_ORDER */
 
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#include <errno.h>              /* errno,
 
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                                   program_invocation_short_name,
 
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                                   error_t, EINVAL, ENOMEM */
 
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#include <stdio.h>              /* fprintf(), stderr, perror(), FILE,
 
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                                   vfprintf() */
 
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#include <stdarg.h>             /* va_list, va_start(), vfprintf() */
 
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#include <stdlib.h>             /* EXIT_SUCCESS */
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#include <netlink/netlink.h>    /* struct nl_addr, nl_addr_parse(),
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                                   nl_geterror(),
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                                   nl_addr_get_family(),
 
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                                   nl_addr_get_family(), NLM_F_EXCL,
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                                   nl_addr_put() */
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#include <netlink/route/route.h> /* struct rtnl_route,
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                                    struct rtnl_nexthop,
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                                    rtnl_route_alloc(),
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                                    rtnl_route_set_family(),
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                                    rtnl_route_set_protocol(),
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                                    RTPROT_BOOT,
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                                    rtnl_route_set_scope(),
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                                    RT_SCOPE_LINK,
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                                    rtnl_route_set_type(),
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                                    RTN_UNICAST,
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                                    rtnl_route_set_dst(),
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                                    rtnl_route_set_table(),
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                                    RT_TABLE_MAIN,
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                                    rtnl_route_nh_alloc(),
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                                    rtnl_route_nh_set_ifindex(),
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                                    rtnl_route_add_nexthop(),
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                                    rtnl_route_add(),
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                                    rtnl_route_delete(),
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                                    rtnl_route_put(),
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                                    rtnl_route_nh_free() */
 
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#include <stddef.h>             /* NULL */
 
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#include <netlink/route/route.h>/* struct rtnl_route,
 
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                                   struct rtnl_nexthop, NETLINK_ROUTE,
 
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                                   rtnl_route_alloc(),
 
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                                   rtnl_route_set_family(),
 
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                                   rtnl_route_set_protocol(),
 
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                                   RTPROT_BOOT,
 
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                                   rtnl_route_set_scope(),
 
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                                   RT_SCOPE_LINK,
 
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                                   rtnl_route_set_type(), RTN_UNICAST,
 
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                                   rtnl_route_set_dst(),
 
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                                   rtnl_route_set_table(),
 
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                                   RT_TABLE_MAIN,
 
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                                   rtnl_route_nh_alloc(),
 
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                                   rtnl_route_nh_set_ifindex(),
 
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                                   rtnl_route_add_nexthop(),
 
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                                   rtnl_route_add(),
 
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                                   rtnl_route_delete(),
 
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                                   rtnl_route_put(),
 
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                                   rtnl_route_nh_free() */
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#include <netlink/socket.h>     /* struct nl_sock, nl_socket_alloc(),
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                                   nl_connect(), nl_socket_free() */
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#include <netlink/route/link.h> /* rtnl_link_get_kernel(),
 
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#include <strings.h>            /* strcasecmp() */
 
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#include <sys/socket.h>         /* AF_UNSPEC, AF_INET6, AF_INET */
 
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#include <sysexits.h>           /* EX_USAGE, EX_OSERR */
 
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#include <netlink/route/link.h> /* struct rtnl_link,
 
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                                   rtnl_link_get_kernel(),
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                                   rtnl_link_get_ifindex(),
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                                   rtnl_link_put() */
 
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#include <netinet/in.h>         /* sa_family_t */
 
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#include <inttypes.h>           /* PRIdMAX, intmax_t */
 
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#include <stdint.h>             /* uint8_t */
 
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bool debug = false;
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const char *argp_program_version = "mandos-client-iprouteadddel " VERSION;
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__attribute__((format (gnu_printf, 2, 3), nonnull))
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int fprintf_plus(FILE *stream, const char *format, ...){
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  va_list ap;
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  va_start (ap, format);
 
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  va_start(ap, format);
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  fprintf(stream, "Mandos plugin helper %s: ",
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          program_invocation_short_name);
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  }
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  /* Set interface index number on nexthop object */
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  rtnl_route_nh_set_ifindex(nexthop, ifindex);
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  /* Set route tu use nexthop object */
 
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  /* Set route to use nexthop object */
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  rtnl_route_add_nexthop(route, nexthop);
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  /* Add or delete route? */
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  if(arguments.add){