src/functions/functions.vpn-security-policies

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2017  IPFire Network Development Team                         #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 VPN_SECURITY_POLICIES_CONFIG_SETTINGS="CIPHER COMPRESSION GROUP_TYPE INTEGRITY KEY_EXCHANGE LIFETIME PFS"
  23 VPN_SECURITY_POLICIES_READONLY="system"
  24
  25 VPN_DEFAULT_SECURITY_POLICY="system"
  26
  27 declare -A VPN_SUPPORTED_CIPHERS=(
  28         # 3DES-CBC
  29         [3DES-CBC]="168 bit 3DES-EDE-CBC"
  30
  31         # AES-CBC
  32         [AES256-CBC]="256 bit AES-CBC"
  33         [AES192-CBC]="192 bit AES-CBC"
  34         [AES128-CBC]="128 bit AES-CBC"
  35
  36         # AES-CTR
  37         [AES256-CTR]="256 bit AES-COUNTER"
  38         [AES192-CTR]="192 bit AES-COUNTER"
  39         [AES128-CTR]="128 bit AES-COUNTER"
  40
  41         # AES-GCM
  42         [AES256-GCM128]="256 bit AES-GCM with 128 bit ICV"
  43         [AES192-GCM128]="192 bit AES-GCM with 128 bit ICV"
  44         [AES128-GCM128]="128 bit AES-GCM with 128 bit ICV"
  45         [AES256-GCM96]="256 bit AES-GCM with 96 bit ICV"
  46         [AES192-GCM96]="192 bit AES-GCM with 96 bit ICV"
  47         [AES128-GCM96]="128 bit AES-GCM with 96 bit ICV"
  48         [AES256-GCM64]="256 bit AES-GCM with 64 bit ICV"
  49         [AES192-GCM64]="192 bit AES-GCM with 64 bit ICV"
  50         [AES128-GCM64]="128 bit AES-GCM with 64 bit ICV"
  51
  52         # AES-CCM
  53         [AES256-CCM128]="256 bit AES-CCM with 128 bit ICV"
  54         [AES192-CCM128]="192 bit AES-CCM with 128 bit ICV"
  55         [AES128-CCM128]="128 bit AES-CCM with 128 bit ICV"
  56         [AES256-CCM96]="256 bit AES-CCM with 96 bit ICV"
  57         [AES192-CCM96]="192 bit AES-CCM with 96 bit ICV"
  58         [AES128-CCM96]="128 bit AES-CCM with 96 bit ICV"
  59         [AES256-CCM64]="256 bit AES-CCM with 64 bit ICV"
  60         [AES192-CCM64]="192 bit AES-CCM with 64 bit ICV"
  61         [AES128-CCM64]="128 bit AES-CCM with 64 bit ICV"
  62
  63         # CAMELLIA-CBC
  64         [CAMELLIA256-CBC]="256 bit CAMELLIA-CBC"
  65         [CAMELLIA192-CBC]="192 bit CAMELLIA-CBC"
  66         [CAMELLIA128-CBC]="128 bit CAMELLIA-CBC"
  67
  68         # CAMELLIA-CTR
  69         [CAMELLIA256-CTR]="256 bit CAMELLIA-COUNTER"
  70         [CAMELLIA192-CTR]="192 bit CAMELLIA-COUNTER"
  71         [CAMELLIA128-CTR]="128 bit CAMELLIA-COUNTER"
  72
  73         # CAMELLIA-GCM
  74         [CAMELLIA256-GCM128]="256 bit CAMELLIA-GCM with 128 bit ICV"
  75         [CAMELLIA192-GCM128]="192 bit CAMELLIA-GCM with 128 bit ICV"
  76         [CAMELLIA128-GCM128]="128 bit CAMELLIA-GCM with 128 bit ICV"
  77         [CAMELLIA256-GCM96]="256 bit CAMELLIA-GCM with 96 bit ICV"
  78         [CAMELLIA192-GCM96]="192 bit CAMELLIA-GCM with 96 bit ICV"
  79         [CAMELLIA128-GCM96]="128 bit CAMELLIA-GCM with 96 bit ICV"
  80         [CAMELLIA256-GCM64]="256 bit CAMELLIA-GCM with 64 bit ICV"
  81         [CAMELLIA192-GCM64]="192 bit CAMELLIA-GCM with 64 bit ICV"
  82         [CAMELLIA128-GCM64]="128 bit CAMELLIA-GCM with 64 bit ICV"
  83
  84         # CAMELLIA-CCM
  85         [CAMELLIA256-CCM128]="256 bit CAMELLIA-CCM with 128 bit ICV"
  86         [CAMELLIA192-CCM128]="192 bit CAMELLIA-CCM with 128 bit ICV"
  87         [CAMELLIA128-CCM128]="128 bit CAMELLIA-CCM with 128 bit ICV"
  88         [CAMELLIA256-CCM96]="256 bit CAMELLIA-CCM with 96 bit ICV"
  89         [CAMELLIA192-CCM96]="192 bit CAMELLIA-CCM with 96 bit ICV"
  90         [CAMELLIA128-CCM96]="128 bit CAMELLIA-CCM with 96 bit ICV"
  91         [CAMELLIA256-CCM64]="256 bit CAMELLIA-CCM with 64 bit ICV"
  92         [CAMELLIA192-CCM64]="192 bit CAMELLIA-CCM with 64 bit ICV"
  93         [CAMELLIA128-CCM64]="128 bit CAMELLIA-CCM with 64 bit ICV"
  94 )
  95
  96 VPN_SUPPORTED_INTEGRITY="SHA512 SHA256 SHA128"
  97 VPN_SUPPORTED_GROUP_TYPES="MODP8192 MODP4096"
  98
  99 # This functions checks if a policy is readonly
 100 # returns true when yes and false when no
 101 vpn_security_policies_check_readonly() {
 102         if isoneof name ${VPN_SECURITY_POLICIES_READONLY}; then
 103                 return ${EXIT_TRUE}
 104         else
 105                 return ${EXIT_FALSE}
 106         fi
 107 }
 108
 109 # This function writes all values to a via ${name} specificated vpn security policy configuration file
 110 vpn_security_policies_write_config() {
 111         assert [ $# -ge 1 ]
 112
 113         local name="${1}"
 114
 115         if ! vpn_security_policy_exists "${name}"; then
 116                 log ERROR "No such vpn security policy: ${name}"
 117                 return ${EXIT_ERROR}
 118         fi
 119
 120         if vpn_security_policies_check_readonly "${name}"; then
 121                 log ERROR "The ${name} vpn security policy cannot be changed."
 122                 return ${EXIT_ERROR}
 123         fi
 124
 125         local path="$(vpn_security_policies_path "${name}")"
 126         if [ ! -w ${path} ]; then
 127                 log ERROR "${path} is not writeable"
 128                 return ${EXIT_ERROR}
 129         fi
 130
 131         if ! settings_write "${path}" ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}; then
 132                 log ERROR "Could not write configuration settings for vpn security policy ${name}"
 133                 return ${EXIT_ERROR}
 134         fi
 135
 136         # TODO everytime we successfully write a config we should call some trigger to take the changes into effect
 137 }
 138
 139 # This funtion writes the value for one key to a via ${name} specificated vpn security policy configuration file
 140 vpn_security_policies_write_config_key() {
 141         assert [ $# -ge 3 ]
 142
 143         local name=${1}
 144         local key=${2}
 145         shift 2
 146
 147         local value="$@"
 148
 149         if ! vpn_security_policy_exists "${name}"; then
 150                 log ERROR "No such vpn security policy: ${name}"
 151                 return ${EXIT_ERROR}
 152         fi
 153
 154         log DEBUG "Set '${key}' to new value '${value}' in vpn security policy ${name}"
 155
 156         local ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
 157
 158         # Read the config settings
 159         if ! vpn_security_policies_read_config "${name}"; then
 160                 return ${EXIT_ERROR}
 161         fi
 162
 163         # Set the key to a new value
 164         assign "${key}" "${value}"
 165
 166         if ! vpn_security_policies_write_config "${name}"; then
 167                 return ${EXIT_ERROR}
 168         fi
 169
 170         return ${EXIT_TRUE}
 171 }
 172
 173 # Reads one or more keys out of a settings file or all if no key is provided.
 174 vpn_security_policies_read_config() {
 175         assert [ $# -ge 1 ]
 176
 177         local name="${1}"
 178         shift 1
 179
 180         if ! vpn_security_policy_exists "${name}"; then
 181                 log ERROR "No such vpn security policy: ${name}"
 182                 return ${EXIT_ERROR}
 183         fi
 184
 185
 186         local args
 187         if [ $# -eq 0 ] && [ -n "${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}" ]; then
 188                 list_append args ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
 189         else
 190                 list_append args $@
 191         fi
 192
 193         local path="$(vpn_security_policies_path ${name})"
 194
 195         if ! settings_read "${path}" ${args}; then
 196                 log ERROR "Could not read settings for vpn security policy ${name}"
 197                 return ${EXIT_ERROR}
 198         fi
 199 }
 200
 201 # Returns the path to a the configuration fora given name
 202 vpn_security_policies_path() {
 203         assert [ $# -eq 1 ]
 204
 205         local name=${1}
 206
 207         if vpn_security_policies_check_readonly "${name}"; then
 208                 echo "${NETWORK_SHARE_DIR}/vpn/security-policies/${name}"
 209         else
 210                 echo "${NETWORK_CONFIG_DIR}/vpn/security-policies/${name}"
 211         fi
 212 }
 213
 214 # Print the content of a vpn security policy configuration file in a nice way
 215 vpn_security_policies_show() {
 216         assert [ $# -eq 1 ]
 217
 218         local name=${1}
 219
 220         local ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
 221         if ! vpn_security_policies_read_config ${name}; then
 222                 return ${EXIT_ERROR}
 223         fi
 224
 225         cli_print_fmt1 0 "Security Policy: ${name}"
 226         cli_space
 227
 228         # This could be done in a loop but a loop is much more complicated
 229         # because we print 'Group Types' but the variable is named 'GROUP_TYPES'
 230         cli_print_fmt1 1 "Ciphers:"
 231         cli_print_fmt1 2 "${CIPHER}"
 232         cli_space
 233
 234         cli_print_fmt1 1 "Integrity:"
 235         cli_print_fmt1 2 "${INTEGRITY}"
 236         cli_space
 237
 238         cli_print_fmt1 1 "Group Types:"
 239         cli_print_fmt1 2 "${GROUP_TYPE}"
 240         cli_space
 241
 242         cli_print_fmt1 1 "Key Exchange:" "${KEY_EXCHANGE}"
 243
 244         # Key Lifetime
 245         if isinteger LIFETIME && [ ${LIFETIME} -gt 0 ]; then
 246                 cli_print_fmt1 1 "Key Lifetime:" "$(format_time ${LIFETIME})"
 247         else
 248                 log ERROR "The value for Key Lifetime is not a valid integer greater zero."
 249         fi
 250
 251         # PFS
 252         if enabled PFS; then
 253                 cli_print_fmt1 1 "Perfect Forward Secrecy:" "enabled"
 254         else
 255                 cli_print_fmt1 1 "Perfect Forward Secrecy:" "disabled"
 256         fi
 257         cli_space
 258
 259         # Compression
 260         if enabled COMPRESSION; then
 261                 cli_print_fmt1 1 "Compression:" "enabled"
 262         else
 263                 cli_print_fmt1 1 "Compression:" "disabled"
 264         fi
 265         cli_space
 266 }
 267
 268 # This function checks if a vpn security policy exists
 269 # Returns True when yes and false when not
 270 vpn_security_policy_exists() {
 271         assert [ $# -eq 1 ]
 272
 273         local name=${1}
 274
 275         local path=$(vpn_security_policies_path "${name}")
 276
 277         [ -f ${path} ] && return ${EXIT_TRUE} || return ${EXIT_FALSE}
 278 }
 279
 280
 281 # This function parses the parameters for the 'cipher' command
 282 vpn_security_policies_cipher(){
 283         local name=${1}
 284         shift
 285
 286         if [ $# -eq 0 ]; then
 287                 log ERROR "You must pass at least one value after cipher"
 288                 return ${EXIT_ERROR}
 289         fi
 290
 291         local CIPHER
 292         if ! vpn_security_policies_read_config ${name} "CIPHER"; then
 293                 return ${EXIT_ERROR}
 294         fi
 295
 296         # Remove duplicated entries to proceed the list safely
 297         CIPHER="$(list_unique ${CIPHER})"
 298
 299         while [ $# -gt 0 ]; do
 300                 case "${1}" in
 301                         -*)
 302                                 value=${1#-}
 303                                 # Check if the cipher is in the list of ciphers and
 304                                 # check if the list has after removing this cipher at least one valid value
 305                                 if list_match ${value} ${CIPHER}; then
 306                                         list_remove CIPHER ${value}
 307                                 else
 308                                         # We do not break here because this error does not break the processing of the next maybe valid values.
 309                                         log ERROR "Can not remove ${value} from the list of Ciphers because ${value} is not in the list."
 310                                 fi
 311                                 ;;
 312                         +*)
 313                                 value=${1#+}
 314                                 # Check if the Ciphers is in the list of supported ciphers.
 315                                 if ! isoneof value ${!VPN_SUPPORTED_CIPHERS[@]}; then
 316                                         # We do not break here because this error does not break the processing of the next maybe valid values.
 317                                         log ERROR "${value} is not a supported cipher and can thats why not added to the list of ciphers."
 318                                 else
 319                                         if list_match ${value} ${CIPHER}; then
 320                                                 log WARNING "${value} is already in the list of ciphers of this policy."
 321                                         else
 322                                                 list_append CIPHER ${value}
 323                                         fi
 324                                 fi
 325                                 ;;
 326                 esac
 327                 shift
 328         done
 329
 330         # Check if the list contain at least one valid cipher
 331         if [ $(list_length ${CIPHER}) -ge 1 ]; then
 332                 if ! vpn_security_policies_write_config_key ${name} "CIPHER" ${CIPHER}; then
 333                         log ERROR "The changes for the vpn security policy ${name} could not be written."
 334                 fi
 335         else
 336                 log ERROR "After proceding all ciphers the list is empty and thats why no changes are written."
 337                 return ${EXIT_ERROR}
 338         fi
 339 }
 340
 341 # This function parses the parameters for the 'compression' command
 342 vpn_security_policies_compression(){
 343         local name=${1}
 344         local value=${2}
 345
 346         # Check if we get only one argument after compression <name>
 347         if [ ! $# -eq 2 ]; then
 348                 log ERROR "The number of arguments do not match. Only one argument after compression is allowed."
 349                 return ${EXIT_ERROR}
 350         fi
 351
 352         if ! isbool value; then
 353                 # We suggest only two values to avoid overburding the user.
 354                 log ERROR "Invalid Argument ${value}"
 355                 return ${EXIT_ERROR}
 356         fi
 357
 358         vpn_security_policies_write_config_key "${name}" "COMPRESSION" "${value}"
 359 }
 360
 361 # This function parses the parameters for the 'group-type' command
 362 vpn_security_policies_group_type(){
 363         local name=${1}
 364         shift
 365
 366         if [ $# -eq 0 ]; then
 367                 log ERROR "You must pass at least one value after group-type"
 368                 return ${EXIT_ERROR}
 369         fi
 370
 371         local GROUP_TYPE
 372         if ! vpn_security_policies_read_config ${name} "GROUP_TYPE"; then
 373                 return ${EXIT_ERROR}
 374         fi
 375
 376         # Remove duplicated entries to proceed the list safely
 377         GROUP_TYPE="$(list_unique ${GROUP_TYPE})"
 378
 379         while [ $# -gt 0 ]; do
 380                 case "${1}" in
 381                         -*)
 382                                 value=${1#-}
 383                                 # Check if the group type is in the list of group types and
 384                                 # check if the list has after removing this group type at leatst one valid value
 385                                 if list_match ${value} ${GROUP_TYPE}; then
 386                                         list_remove GROUP_TYPE ${value}
 387                                 else
 388                                         # We do not break here because this error does not break the processing of the next maybe valid values.
 389                                         log ERROR "Can not remove ${value} from the list of group types because ${value} is not in the list."
 390                                 fi
 391                                 ;;
 392                         +*)
 393                                 value=${1#+}
 394                                 # Check if the group type is in the list of supported group types.
 395                                 if ! isoneof value ${VPN_SUPPORTED_GROUP_TYPES}; then
 396                                         # We do not break here because the processing of other maybe valid values are indepent from this error.
 397                                         log ERROR "${value} is not a supported group type and can thats why not added to the list of group types."
 398                                 else
 399                                         if list_match ${value} ${GROUP_TYPE}; then
 400                                                 log WARNING "${value} is already in the list of group-types of this policy."
 401                                         else
 402                                                 list_append GROUP_TYPE ${value}
 403                                         fi
 404                                 fi
 405                                 ;;
 406                 esac
 407                 shift
 408         done
 409
 410         # Check if the list contain at least one valid group-type
 411         if [ $(list_length ${GROUP_TYPE}) -ge 1 ]; then
 412                 if ! vpn_security_policies_write_config_key ${name} "GROUP_TYPE" ${GROUP_TYPE}; then
 413                         log ERROR "The changes for the vpn security policy ${name} could not be written."
 414                 fi
 415         else
 416                 log ERROR "After proceding all group types the list is empty and thats why no changes are written."
 417                 return ${EXIT_ERROR}
 418         fi
 419 }
 420
 421 # This function parses the parameters for the 'integrity' command
 422 vpn_security_policies_integrity(){
 423         local name=${1}
 424         shift
 425
 426         if [ $# -eq 0 ]; then
 427                 log ERROR "You must pass at least one value after integrity."
 428                 return ${EXIT_ERROR}
 429         fi
 430
 431         local INTEGRITY
 432         if ! vpn_security_policies_read_config ${name} "INTEGRITY"; then
 433                 return ${EXIT_ERROR}
 434         fi
 435
 436         # Remove duplicated entries to proceed the list safely
 437         INTEGRITY="$(list_unique ${INTEGRITY})"
 438
 439         while [ $# -gt 0 ]; do
 440                 case "${1}" in
 441                         -*)
 442                                 value=${1#-}
 443                                 # Check if the integrity hash is in the list of integrity hashes and
 444                                 # check if the list has after removing this  integrity hash at least one valid value
 445                                 if list_match ${value} ${INTEGRITY}; then
 446                                         list_remove INTEGRITY ${value}
 447                                 else
 448                                         # We do not break here because the processing of other maybe valid values are indepent from this error.
 449                                         log ERROR "Can not remove ${value} from the list of integrity hashes because ${value} is not in the list."
 450                                 fi
 451                                 ;;
 452                         +*)
 453                                 value=${1#+}
 454                                 # Check if the Ciphers is in the list of supported integrity hashes.
 455                                 if ! isoneof value ${VPN_SUPPORTED_INTEGRITY}; then
 456                                         # We do not break here because the processing of other maybe valid values are indepent from this error.
 457                                         log ERROR "${value} is not a supported integrity hash and can thats why not added to the list of integrity hashes."
 458                                 else
 459                                         if list_match ${value} ${INTEGRITY}; then
 460                                                 log WARNING "${value} is already in the list of integrety hashes of this policy."
 461                                         else
 462                                                 list_append INTEGRITY ${value}
 463                                         fi
 464                                 fi
 465                                 ;;
 466                 esac
 467                 shift
 468         done
 469
 470         # Check if the list contain at least one valid group-type
 471         if [ $(list_length ${INTEGRITY}) -ge 1 ]; then
 472                 if ! vpn_security_policies_write_config_key ${name} "INTEGRITY" ${INTEGRITY}; then
 473                         log ERROR "The changes for the vpn security policy ${name} could not be written."
 474                 fi
 475         else
 476                 log ERROR "After proceding all integrity hashes the list is empty and thats why no changes are written."
 477                 return ${EXIT_ERROR}
 478         fi
 479 }
 480
 481 # This function parses the parameters for the 'key-exchange' command
 482 vpn_security_policies_key_exchange() {
 483         local name=${1}
 484         local value=${2}
 485
 486         # Check if we get only one argument after key-exchange <name>
 487         if [ ! $# -eq 2 ]; then
 488                 log ERROR "The number of arguments do not match. Only argument after key-exchange is allowed."
 489                 return ${EXIT_ERROR}
 490         fi
 491
 492         if ! isoneof value "ikev1" "ikev2" "IKEV1" "IKEV2"; then
 493                 log ERROR "Invalid Argument ${value}"
 494                 return ${EXIT_ERROR}
 495         fi
 496
 497         vpn_security_policies_write_config_key "${name}" "KEY_EXCHANGE" "${value,,}"
 498 }
 499
 500 # This function parses the parameters for the 'lifetime' command.
 501 vpn_security_policies_lifetime(){
 502         local name=${1}
 503         shift
 504
 505         local value=$@
 506
 507         # Check if we get only one argument after lifetime <name>
 508         if [ ! $# -ge 1 ]; then
 509                 log ERROR "The number of arguments do not match you must provide at least one integer value or a valid time with the format  <hours>h <minutes>m <seconds>s"
 510                 return ${EXIT_ERROR}
 511         fi
 512
 513         if ! isinteger value; then
 514                 value=$(parse_time $@)
 515                 if [ ! $? -eq 0 ]; then
 516                         log ERROR "Parsing the passed time was not sucessful please check the passed values."
 517                         return ${EXIT_ERROR}
 518                 fi
 519         fi
 520
 521         if [ ${value} -le 0 ]; then
 522                 log ERROR "The passed time value must be in the sum greater zero seconds."
 523                 return ${EXIT_ERROR}
 524         fi
 525
 526         vpn_security_policies_write_config_key "${name}" "LIFETIME" "${value}"
 527 }
 528
 529 # This function parses the parameters for the 'pfs' command
 530 vpn_security_policies_pfs(){
 531         local name=${1}
 532         local value=${2}
 533
 534         # Check if we get only one argument after pfs <name>
 535         if [ ! $# -eq 2 ]; then
 536                 log ERROR "The number of arguments do not match. Only argument after pfs is allowed."
 537                 return ${EXIT_ERROR}
 538         fi
 539
 540         if [ ! $# -eq 2 ] || ! isbool value; then
 541                 # We suggest only two values to avoid overburding the user.
 542                 log ERROR "Invalid Argument ${value}"
 543                 return ${EXIT_ERROR}
 544         fi
 545
 546         vpn_security_policies_write_config_key "${name}" "PFS" "${value}"
 547 }
 548
 549 # This function checks if a vpn security policy name is valid
 550 # Allowed are only A-Za-z0-9
 551 vpn_security_policies_check_name() {
 552         assert [ $# -eq 1 ]
 553
 554         local name=${1}
 555
 556         [[ ${name} =~ [^[:alnum:]$] ]]
 557 }
 558
 559 # Function that creates based on the paramters one ore more new vpn security policies
 560 vpn_security_policies_new() {
 561         if [ $# -gt 1 ]; then
 562                 error "Too many arguments"
 563                 return ${EXIT_ERROR}
 564         fi
 565
 566         local name="${1}"
 567         if ! isset name; then
 568                 error "Please provide a name"
 569                 return ${EXIT_ERROR}
 570         fi
 571
 572         # Check for duplicates
 573         if vpn_security_policy_exists "${name}"; then
 574                 error "The VPN security policy with name ${name} already exists"
 575                 return ${EXIT_ERROR}
 576         fi
 577
 578         # Check if name is valid
 579         if  vpn_security_policies_check_name "${name}"; then
 580                 error "'${name}' contains illegal characters"
 581                 return ${EXIT_ERROR}
 582         fi
 583
 584         # Check if we have a read-only policy with the same name
 585         if vpn_security_policies_check_readonly "${name}"; then
 586                 error "The VPN security policy ${name} is read-only"
 587                 return ${EXIT_ERROR}
 588         fi
 589
 590         # Check if our source policy exists
 591         if ! vpn_security_policy_exists "${VPN_DEFAULT_SECURITY_POLICY}"; then
 592                 error "Default VPN Security Policy '${VPN_DEFAULT_SECURITY_POLICY}' does not exist"
 593                 return ${EXIT_ERROR}
 594         fi
 595
 596         log DEBUG "Creating VPN Security Policy ${name}"
 597
 598         if copy "$(vpn_security_policies_path "${VPN_DEFAULT_SECURITY_POLICY}")"
 599                         "$(vpn_security_policies_path ${name})"; then
 600                 log INFO "VPN Security Policy ${name} successfully created"
 601         else
 602                 log ERROR "Could not create VPN Security Policy ${name}"
 603                 return ${EXIT_ERROR}
 604         fi
 605
 606         # Show the newly created policy
 607         vpn_security_policies_show "${name}"
 608 }
 609
 610 # Function that deletes based on the passed parameters one ore more vpn security policies
 611 vpn_security_policies_destroy() {
 612         local name
 613         for name in $@; do
 614                 if ! vpn_security_policy_exists ${name}; then
 615                         log ERROR "The vpn security policy ${name} does not exist."
 616                         continue
 617                 fi
 618
 619                 if vpn_security_policies_check_readonly ${name}; then
 620                         log ERROR "The vpn security policy ${name} cannot be deleted."
 621                         continue
 622                 fi
 623
 624                 log DEBUG "Deleting vpn security policy ${name}"
 625                 settings_remove $(vpn_security_policies_path ${name})
 626         done
 627 }