138e8210e12096dc696ba3c47287dac2acf330fe
[people/ms/network.git] / 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="CIPHERS COMPRESSION GROUP_TYPES \
23         INTEGRITIES PSEUDO_RANDOM_FUNCTIONS KEY_EXCHANGE LIFETIME PFS"
24 VPN_SECURITY_POLICIES_READONLY="system performance"
25
26 VPN_DEFAULT_SECURITY_POLICY="system"
27
28 declare -A VPN_SUPPORTED_CIPHERS=(
29         # 3DES-CBC
30         [3DES-CBC]="168 bit 3DES-EDE-CBC"
31
32         # AES-CBC
33         [AES256-CBC]="256 bit AES-CBC"
34         [AES192-CBC]="192 bit AES-CBC"
35         [AES128-CBC]="128 bit AES-CBC"
36
37         # AES-CTR
38         [AES256-CTR]="256 bit AES-COUNTER"
39         [AES192-CTR]="192 bit AES-COUNTER"
40         [AES128-CTR]="128 bit AES-COUNTER"
41
42         # AES-GCM
43         [AES256-GCM128]="256 bit AES-GCM with 128 bit ICV"
44         [AES192-GCM128]="192 bit AES-GCM with 128 bit ICV"
45         [AES128-GCM128]="128 bit AES-GCM with 128 bit ICV"
46         [AES256-GCM96]="256 bit AES-GCM with 96 bit ICV"
47         [AES192-GCM96]="192 bit AES-GCM with 96 bit ICV"
48         [AES128-GCM96]="128 bit AES-GCM with 96 bit ICV"
49         [AES256-GCM64]="256 bit AES-GCM with 64 bit ICV"
50         [AES192-GCM64]="192 bit AES-GCM with 64 bit ICV"
51         [AES128-GCM64]="128 bit AES-GCM with 64 bit ICV"
52
53         # AES-CCM
54         [AES256-CCM128]="256 bit AES-CCM with 128 bit ICV"
55         [AES192-CCM128]="192 bit AES-CCM with 128 bit ICV"
56         [AES128-CCM128]="128 bit AES-CCM with 128 bit ICV"
57         [AES256-CCM96]="256 bit AES-CCM with 96 bit ICV"
58         [AES192-CCM96]="192 bit AES-CCM with 96 bit ICV"
59         [AES128-CCM96]="128 bit AES-CCM with 96 bit ICV"
60         [AES256-CCM64]="256 bit AES-CCM with 64 bit ICV"
61         [AES192-CCM64]="192 bit AES-CCM with 64 bit ICV"
62         [AES128-CCM64]="128 bit AES-CCM with 64 bit ICV"
63
64         # CAMELLIA-CBC
65         [CAMELLIA256-CBC]="256 bit CAMELLIA-CBC"
66         [CAMELLIA192-CBC]="192 bit CAMELLIA-CBC"
67         [CAMELLIA128-CBC]="128 bit CAMELLIA-CBC"
68
69         # CAMELLIA-CTR
70         [CAMELLIA256-CTR]="256 bit CAMELLIA-COUNTER"
71         [CAMELLIA192-CTR]="192 bit CAMELLIA-COUNTER"
72         [CAMELLIA128-CTR]="128 bit CAMELLIA-COUNTER"
73
74         # CAMELLIA-GCM
75         [CAMELLIA256-GCM128]="256 bit CAMELLIA-GCM with 128 bit ICV"
76         [CAMELLIA192-GCM128]="192 bit CAMELLIA-GCM with 128 bit ICV"
77         [CAMELLIA128-GCM128]="128 bit CAMELLIA-GCM with 128 bit ICV"
78         [CAMELLIA256-GCM96]="256 bit CAMELLIA-GCM with 96 bit ICV"
79         [CAMELLIA192-GCM96]="192 bit CAMELLIA-GCM with 96 bit ICV"
80         [CAMELLIA128-GCM96]="128 bit CAMELLIA-GCM with 96 bit ICV"
81         [CAMELLIA256-GCM64]="256 bit CAMELLIA-GCM with 64 bit ICV"
82         [CAMELLIA192-GCM64]="192 bit CAMELLIA-GCM with 64 bit ICV"
83         [CAMELLIA128-GCM64]="128 bit CAMELLIA-GCM with 64 bit ICV"
84
85         # CAMELLIA-CCM
86         [CAMELLIA256-CCM128]="256 bit CAMELLIA-CCM with 128 bit ICV"
87         [CAMELLIA192-CCM128]="192 bit CAMELLIA-CCM with 128 bit ICV"
88         [CAMELLIA128-CCM128]="128 bit CAMELLIA-CCM with 128 bit ICV"
89         [CAMELLIA256-CCM96]="256 bit CAMELLIA-CCM with 96 bit ICV"
90         [CAMELLIA192-CCM96]="192 bit CAMELLIA-CCM with 96 bit ICV"
91         [CAMELLIA128-CCM96]="128 bit CAMELLIA-CCM with 96 bit ICV"
92         [CAMELLIA256-CCM64]="256 bit CAMELLIA-CCM with 64 bit ICV"
93         [CAMELLIA192-CCM64]="192 bit CAMELLIA-CCM with 64 bit ICV"
94         [CAMELLIA128-CCM64]="128 bit CAMELLIA-CCM with 64 bit ICV"
95
96         # DJB
97         [CHACHA20-POLY1305]="256 bit ChaCha20/Poly1305 with 128 bit ICV"
98
99         # No Encryption
100         [NULL]="No Encryption"
101 )
102
103 declare -A CIPHER_TO_STRONGSWAN=(
104         # 3DES-CBC
105         [3DES-CBC]="3des"
106
107         # AES-CBC
108         [AES256-CBC]="aes256"
109         [AES192-CBC]="aes192"
110         [AES128-CBC]="aes128"
111
112         # AES-CTR
113         [AES256-CTR]="aes256ctr"
114         [AES192-CTR]="aes192ctr"
115         [AES128-CTR]="aes128ctr"
116
117         # AES-GCM
118         [AES256-GCM128]="aes256gcm128"
119         [AES192-GCM128]="aes192gcm128"
120         [AES128-GCM128]="aes128gcm128"
121         [AES256-GCM96]="aes256gcm96"
122         [AES192-GCM96]="aes192gcm96"
123         [AES128-GCM96]="aes128gcm96"
124         [AES256-GCM64]="aes256gcm64"
125         [AES192-GCM64]="aes192gcm64"
126         [AES128-GCM64]="aes128gcm64"
127
128         # AES-CCM
129         [AES256-CCM128]="aes256ccm128"
130         [AES192-CCM128]="aes192ccm128"
131         [AES128-CCM128]="aes128ccm128"
132         [AES256-CCM96]="aes256ccm96"
133         [AES192-CCM96]="aes192ccm96"
134         [AES128-CCM96]="aes128ccm96"
135         [AES256-CCM64]="aes256ccm64"
136         [AES192-CCM64]="aes192ccm64"
137         [AES128-CCM64]="aes128ccm64"
138
139         # CAMELLIA-CBC
140         [CAMELLIA256-CBC]="camellia256"
141         [CAMELLIA192-CBC]="camellia192"
142         [CAMELLIA128-CBC]="camellia128"
143
144         # CAMELLIA-CTR
145         [CAMELLIA256-CTR]="camellia256ctr"
146         [CAMELLIA192-CTR]="camellia192ctr"
147         [CAMELLIA128-CTR]="camellia128ctr"
148
149         # CAMELLIA-GCM
150         [CAMELLIA256-GCM128]="camellia256gcm128"
151         [CAMELLIA192-GCM128]="camellia192gcm128"
152         [CAMELLIA128-GCM128]="camellia128gcm128"
153         [CAMELLIA256-GCM96]="camellia256gcm96"
154         [CAMELLIA192-GCM96]="camellia192gcm96"
155         [CAMELLIA128-GCM96]="camellia128gcm96"
156         [CAMELLIA256-GCM64]="camellia256gcm64"
157         [CAMELLIA192-GCM64]="camellia192gcm64"
158         [CAMELLIA128-GCM64]="camellia128gcm64"
159
160         # CAMELLIA-CCM
161         [CAMELLIA256-CCM128]="camellia256ccm128"
162         [CAMELLIA192-CCM128]="camellia192ccm128"
163         [CAMELLIA128-CCM128]="camellia128ccm128"
164         [CAMELLIA256-CCM96]="camellia256ccm96"
165         [CAMELLIA192-CCM96]="camellia192ccm96"
166         [CAMELLIA128-CCM96]="camellia128ccm96"
167         [CAMELLIA256-CCM64]="camellia256ccm64"
168         [CAMELLIA192-CCM64]="camellia192ccm64"
169         [CAMELLIA128-CCM64]="camellia128ccm64"
170
171         # DJB
172         [CHACHA20-POLY1305]="chacha20poly1305"
173
174         # No Encryption
175         [NULL]="null"
176 )
177
178 declare -A VPN_SUPPORTED_PSEUDO_RANDOM_FUNCTIONS=(
179         [MD5]="MD5"
180
181         # SHA
182         [SHA1]="SHA1"
183         [SHA256]="SHA256"
184         [SHA384]="SHA384"
185         [SHA512]="SHA512"
186
187         # AES
188         [AES-XCBC]="AES-XCBC"
189         [AES-CMAC]="AES-CMAC"
190 )
191
192 declare -A PSEUDO_RANDOM_FUNCTION_TO_STRONGSWAN=(
193         [MD5]="prfmd5"
194
195         # SHA
196         [SHA1]="prfsha1"
197         [SHA256]="prfsha256"
198         [SHA384]="prfsha384"
199         [SHA512]="prfsha512"
200
201         # AES
202         [AES-XCBC]="prfaesxcbc"
203         [AES-CMAC]="prfaescmac"
204 )
205
206 declare -A VPN_SUPPORTED_INTEGRITIES=(
207         [MD5]="MD5-HMAC"
208
209         # SHA
210         [SHA1]="SHA1-HMAC"
211         [SHA512]="512 bit SHA2-HMAC"
212         [SHA384]="384 bit SHA2-HMAC"
213         [SHA256]="256 bit SHA2-HMAC"
214
215         # AES
216         [AES-XCBC]="AES-XCBC"
217         [AES-CMAC]="AES-CMAC"
218         [AES256-GMAC]="256 bit AES-GMAC"
219         [AES192-GMAC]="192 bit AES-GMAC"
220         [AES128-GMAC]="128 bit AES-GMAC"
221 )
222
223 declare -A INTEGRITY_TO_STRONGSWAN=(
224         [MD5]="md5"
225
226         # SHA
227         [SHA1]="sha1"
228         [SHA512]="sha512"
229         [SHA384]="sha384"
230         [SHA256]="sha256"
231
232         # AES
233         [AES-XCBC]="aesxcbc"
234         [AES-CMAC]="aescmac"
235         [AES256-GMAC]="aes256gmac"
236         [AES192-GMAC]="aes192gmac"
237         [AES128-GMAC]="aes128gmac"
238 )
239
240 declare -A VPN_SUPPORTED_GROUP_TYPES=(
241         # Regular Groups
242         [MODP768]="768 bit Modulo Prime Group"
243         [MODP1024]="1024 bit Modulo Prime Group"
244         [MODP1536]="1536 bit Modulo Prime Group"
245         [MODP2048]="2048 bit Modulo Prime Group"
246         [MODP3072]="3072 bit Modulo Prime Group"
247         [MODP4096]="4096 bit Modulo Prime Group"
248         [MODP6144]="6144 bit Modulo Prime Group"
249         [MODP8192]="8192 bit Modulo Prime Group"
250
251         # NIST Elliptic Curve Groups
252         [ECP192]="192 bit NIST Elliptic Curve Group"
253         [ECP224]="224 bit NIST Elliptic Curve Group"
254         [ECP256]="256 bit NIST Elliptic Curve Group"
255         [ECP384]="384 bit NIST Elliptic Curve Group"
256         [ECP521]="521 bit NIST Elliptic Curve Group"
257
258         # Brainpool Elliptic Curve Groups
259         [ECP224BP]="224 bit Brainpool Elliptic Curve Group"
260         [ECP256BP]="256 bit Brainpool Elliptic Curve Group"
261         [ECP384BP]="384 bit Brainpool Elliptic Curve Group"
262         [ECP512BP]="512 bit Brainpool Elliptic Curve Group"
263
264         # Curve25519
265         [CURVE25519]="256 bit Elliptic Curve 25519"
266
267         # Curve448
268         [CURVE448]="224 bit Elliptic Curve 448"
269 )
270
271 declare -A GROUP_TYPE_TO_STRONGSWAN=(
272         # Regular Groups
273         [MODP768]="modp768"
274         [MODP1024]="modp1024"
275         [MODP1536]="modp1536"
276         [MODP2048]="modp2048"
277         [MODP3072]="modp3072"
278         [MODP4096]="modp4096"
279         [MODP6144]="modp6144"
280         [MODP8192]="modp8192"
281
282         # NIST Elliptic Curve Groups
283         [ECP192]="ecp192"
284         [ECP224]="ecp224"
285         [ECP256]="ecp256"
286         [ECP384]="ecp384"
287         [ECP521]="ecp521"
288
289         # Brainpool Elliptic Curve Groups
290         [ECP224BP]="ecp224bp"
291         [ECP256BP]="ecp256bp"
292         [ECP384BP]="ecp384bp"
293         [ECP512BP]="ecp512bp"
294
295         # More Curves
296         [CURVE25519]="curve25519"
297         [CURVE448]="curve448"
298 )
299
300 cli_vpn_security_policies() {
301         local action
302         local security_policy
303
304         if vpn_security_policy_exists ${1}; then
305                 security_policy=${1}
306                 key=${2}
307                 shift 2
308
309                 case "${key}" in
310                         ciphers|compression|integrities|lifetime|pfs|show)
311                                 vpn_security_policies_${key} ${security_policy} "$@"
312                                 ;;
313                         pseudo-random-functions)
314                                 vpn_security_policies_pseudo_random_functions "${security_policy}" "$@"
315                                 ;;
316                         group-types)
317                                 vpn_security_policies_group_types ${security_policy} "$@"
318                                 ;;
319                         key-exchange)
320                                 vpn_security_policies_key_exchange ${security_policy} "$@"
321                                 ;;
322                         *)
323                                 error "Unrecognized argument: ${key}"
324                                 exit ${EXIT_ERROR}
325                                 ;;
326                 esac
327         else
328                 action=${1}
329                 shift
330
331                 case "${action}" in
332                         new)
333                                 vpn_security_policies_new "$@"
334                                 ;;
335                         destroy)
336                                 vpn_security_policies_destroy "$@"
337                                 ;;
338                         ""|*)
339                                 if [ -n "${action}" ]; then
340                                         error "Unrecognized argument: '${action}'"
341                                 fi
342                                 exit ${EXIT_ERROR}
343                                 ;;
344                 esac
345         fi
346 }
347
348 # This functions checks if a policy is readonly
349 # returns true when yes and false when no
350 vpn_security_policies_check_readonly() {
351         if isoneof name ${VPN_SECURITY_POLICIES_READONLY}; then
352                 return ${EXIT_TRUE}
353         else
354                 return ${EXIT_FALSE}
355         fi
356 }
357
358 # This function writes all values to a via ${name} specificated vpn security policy configuration file
359 vpn_security_policies_write_config() {
360         assert [ $# -ge 1 ]
361
362         local name="${1}"
363
364         if ! vpn_security_policy_exists "${name}"; then
365                 log ERROR "No such vpn security policy: ${name}"
366                 return ${EXIT_ERROR}
367         fi
368
369         if vpn_security_policies_check_readonly "${name}"; then
370                 log ERROR "The ${name} vpn security policy cannot be changed."
371                 return ${EXIT_ERROR}
372         fi
373
374         local path="$(vpn_security_policies_path "${name}")"
375         if [ ! -w ${path} ]; then
376                 log ERROR "${path} is not writeable"
377                 return ${EXIT_ERROR}
378         fi
379
380         if ! settings_write "${path}" ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}; then
381                 log ERROR "Could not write configuration settings for vpn security policy ${name}"
382                 return ${EXIT_ERROR}
383         fi
384
385         if ! vpn_security_policies_reload ${name}; then
386                 log WARNING "Could not reload the IPsec connection using this security policy"
387                 return ${EXIT_ERROR}
388         fi
389 }
390
391 # reload IPsec connections using a special policy
392 vpn_security_policies_reload() {
393         local name=${1}
394
395         local connection
396         for connection in $(ipsec_list_connections); do
397                 local SECURITY_POLICY ENABLED
398
399                 if ! ipsec_connection_read_config "${connection}" "SECURITY_POLICY"; then
400                         continue
401                 fi
402
403                 if [[ "${SECURITY_POLICY}" = "${name}" ]] && enabled ENABLED; then
404                         if ! ipsec_connection_to_strongswan "${connection}"; then
405                                 log ERROR "Could not generate strongswan config for ${connnection}"
406                         fi
407                 fi
408         done
409
410         ipsec_strongswan_load
411 }
412
413 # This funtion writes the value for one key to a via ${name} specificated vpn security policy configuration file
414 vpn_security_policies_write_config_key() {
415         assert [ $# -ge 3 ]
416
417         local name=${1}
418         local key=${2}
419         shift 2
420
421         local value="$@"
422
423         if ! vpn_security_policy_exists "${name}"; then
424                 log ERROR "No such vpn security policy: ${name}"
425                 return ${EXIT_ERROR}
426         fi
427
428         log DEBUG "Set '${key}' to new value '${value}' in vpn security policy ${name}"
429
430         local ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
431
432         # Read the config settings
433         if ! vpn_security_policies_read_config "${name}"; then
434                 return ${EXIT_ERROR}
435         fi
436
437         # Set the key to a new value
438         assign "${key}" "${value}"
439
440         if ! vpn_security_policies_write_config "${name}"; then
441                 return ${EXIT_ERROR}
442         fi
443
444         return ${EXIT_TRUE}
445 }
446
447 # Reads one or more keys out of a settings file or all if no key is provided.
448 vpn_security_policies_read_config() {
449         assert [ $# -ge 1 ]
450
451         local name="${1}"
452         shift 1
453
454         if ! vpn_security_policy_exists "${name}"; then
455                 log ERROR "No such vpn security policy: ${name}"
456                 return ${EXIT_ERROR}
457         fi
458
459
460         local args
461         if [ $# -eq 0 ] && [ -n "${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}" ]; then
462                 list_append args ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
463         else
464                 list_append args "$@"
465         fi
466
467         local path="$(vpn_security_policies_path ${name})"
468
469         if ! settings_read "${path}" ${args}; then
470                 log ERROR "Could not read settings for vpn security policy ${name}"
471                 return ${EXIT_ERROR}
472         fi
473 }
474
475 # Returns the path to a the configuration fora given name
476 vpn_security_policies_path() {
477         assert [ $# -eq 1 ]
478
479         local name=${1}
480
481         if vpn_security_policies_check_readonly "${name}"; then
482                 echo "${NETWORK_SHARE_DIR}/vpn/security-policies/${name}"
483         else
484                 echo "${NETWORK_CONFIG_DIR}/vpn/security-policies/${name}"
485         fi
486 }
487
488 # Print the content of a vpn security policy configuration file in a nice way
489 vpn_security_policies_show() {
490         assert [ $# -eq 1 ]
491
492         local name=${1}
493
494         local ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
495         if ! vpn_security_policies_read_config ${name}; then
496                 return ${EXIT_ERROR}
497         fi
498
499         cli_print_fmt1 0 "Security Policy: ${name}"
500         cli_space
501
502         # This could be done in a loop but a loop is much more complicated
503         # because we print 'Group Types' but the variable is named 'GROUP_TYPES'
504         cli_print_fmt1 1 "Ciphers:"
505         local cipher
506         for cipher in ${CIPHERS}; do
507                 cli_print_fmt1 2 "${VPN_SUPPORTED_CIPHERS[${cipher}]-${cipher}}"
508         done
509         cli_space
510
511         cli_print_fmt1 1 "Integrity:"
512         local integrity
513         for integrity in ${INTEGRITIES}; do
514                 cli_print_fmt1 2 "${VPN_SUPPORTED_INTEGRITIES[${integrity}]-${integrity}}"
515         done
516         cli_space
517
518         cli_print_fmt1 1 "Pseudo Random Functions:"
519         local prf
520         for prf in ${PSEUDO_RANDOM_FUNCTIONS}; do
521                 cli_print_fmt1 2 "${VPN_SUPPORTED_PSEUDO_RANDOM_FUNCTIONS[${prf}]-${prf}}"
522         done
523         cli_space
524
525         cli_print_fmt1 1 "Group Types:"
526         local group_type
527         for group_type in ${GROUP_TYPES}; do
528                 cli_print_fmt1 2 "${VPN_SUPPORTED_GROUP_TYPES[${group_type}]-${group_type}}"
529         done
530         cli_space
531
532         cli_print_fmt1 1 "Key Exchange:" "${KEY_EXCHANGE}"
533
534         # Key Lifetime
535         if isinteger LIFETIME && [ ${LIFETIME} -gt 0 ]; then
536                 cli_print_fmt1 1 "Key Lifetime:" "$(format_time ${LIFETIME})"
537         else
538                 log ERROR "The value for Key Lifetime is not a valid integer greater zero."
539         fi
540
541         # PFS
542         if enabled PFS; then
543                 cli_print_fmt1 1 "Perfect Forward Secrecy:" "enabled"
544         else
545                 cli_print_fmt1 1 "Perfect Forward Secrecy:" "disabled"
546         fi
547         cli_space
548
549         # Compression
550         if enabled COMPRESSION; then
551                 cli_print_fmt1 1 "Compression:" "enabled"
552         else
553                 cli_print_fmt1 1 "Compression:" "disabled"
554         fi
555         cli_space
556 }
557
558 # This function checks if a vpn security policy exists
559 # Returns True when yes and false when not
560 vpn_security_policy_exists() {
561         assert [ $# -eq 1 ]
562
563         local name=${1}
564
565         local path=$(vpn_security_policies_path "${name}")
566
567         [ -f ${path} ] && return ${EXIT_TRUE} || return ${EXIT_FALSE}
568 }
569
570
571 # This function parses the parameters for the 'cipher' command
572 vpn_security_policies_ciphers() {
573         local name=${1}
574         shift
575
576         if [ $# -eq 0 ]; then
577                 log ERROR "You must pass at least one value after cipher"
578                 return ${EXIT_ERROR}
579         fi
580
581         local CIPHERS
582         if ! vpn_security_policies_read_config ${name} "CIPHERS"; then
583                 return ${EXIT_ERROR}
584         fi
585
586         # Remove duplicated entries to proceed the list safely
587         CIPHERS="$(list_unique ${CIPHERS})"
588
589         local ciphers_added
590         local ciphers_removed
591         local ciphers_set
592
593         while [ $# -gt 0 ]; do
594                 local arg="${1}"
595
596                 case "${arg}" in
597                         +*)
598                                 list_append ciphers_added "${arg:1}"
599                                 ;;
600                         -*)
601                                 list_append ciphers_removed "${arg:1}"
602                                 ;;
603                         [A-Z0-9]*)
604                                 list_append ciphers_set "${arg}"
605                                 ;;
606                         *)
607                                 error "Invalid argument: ${arg}"
608                                 return ${EXIT_ERROR}
609                                 ;;
610                 esac
611                 shift
612         done
613
614         # Check if the user is trying a mixed operation
615         if ! list_is_empty ciphers_set && (! list_is_empty ciphers_added || ! list_is_empty ciphers_removed); then
616                 error "You cannot reset the cipher list and add or remove ciphers at the same time"
617                 return ${EXIT_ERROR}
618         fi
619
620         # Set new cipher list
621         if ! list_is_empty ciphers_set; then
622                 # Check if all ciphers are valid
623                 local cipher
624                 for cipher in ${ciphers_set}; do
625                         if ! vpn_security_policies_cipher_supported ${cipher}; then
626                                 error "Unsupported cipher: ${cipher}"
627                                 return ${EXIT_ERROR}
628                         fi
629                 done
630
631                 CIPHERS="${ciphers_set}"
632
633         # Perform incremental updates
634         else
635                 local cipher
636
637                 # Perform all removals
638                 for cipher in ${ciphers_removed}; do
639                         if ! list_remove CIPHERS ${cipher}; then
640                                 warning "${cipher} was not on the list and could not be removed"
641                         fi
642                 done
643
644                 for cipher in ${ciphers_added}; do
645                         if vpn_security_policies_cipher_supported ${cipher}; then
646                                 if ! list_append_unique CIPHERS ${cipher}; then
647                                         warning "${cipher} is already on the cipher list"
648                                 fi
649                         else
650                                 warning "${cipher} is unknown or unsupported and could not be added"
651                         fi
652                 done
653         fi
654
655         # Check if the list contain at least one valid cipher
656         if list_is_empty CIPHERS; then
657                 error "Cannot save an empty cipher list"
658                 return ${EXIT_ERROR}
659         fi
660
661         # Save everything
662         if ! vpn_security_policies_write_config_key ${name} "CIPHERS" ${CIPHERS}; then
663                 log ERROR "The changes for the vpn security policy ${name} could not be written."
664         fi
665
666         cli_headline 1 "Current cipher list for ${name}:"
667         for cipher in ${CIPHERS}; do
668                 cli_print_fmt1 1 "${cipher}" "${VPN_SUPPORTED_CIPHERS[${cipher}]}"
669         done
670 }
671
672 # This function parses the parameters for the 'compression' command
673 vpn_security_policies_compression(){
674         local name=${1}
675         local value=${2}
676
677         # Check if we get only one argument after compression <name>
678         if [ ! $# -eq 2 ]; then
679                 log ERROR "The number of arguments do not match. Only one argument after compression is allowed."
680                 return ${EXIT_ERROR}
681         fi
682
683         if ! isbool value; then
684                 # We suggest only two values to avoid overburding the user.
685                 log ERROR "Invalid Argument ${value}"
686                 return ${EXIT_ERROR}
687         fi
688
689         vpn_security_policies_write_config_key "${name}" "COMPRESSION" "${value}"
690 }
691
692 # This function parses the parameters for the 'group-type' command
693 vpn_security_policies_group_types() {
694         local name=${1}
695         shift
696
697         if [ $# -eq 0 ]; then
698                 log ERROR "You must pass at least one value after group-type"
699                 return ${EXIT_ERROR}
700         fi
701
702         local GROUP_TYPES
703         if ! vpn_security_policies_read_config ${name} "GROUP_TYPES"; then
704                 return ${EXIT_ERROR}
705         fi
706
707         # Remove duplicated entries to proceed the list safely
708         GROUP_TYPES="$(list_unique ${GROUP_TYPES})"
709
710         local group_types_added
711         local group_types_removed
712         local group_types_set
713
714         while [ $# -gt 0 ]; do
715                 local arg="${1}"
716
717                 case "${arg}" in
718                         +*)
719                                 list_append group_types_added "${arg:1}"
720                                 ;;
721                         -*)
722                                 list_append group_types_removed "${arg:1}"
723                                 ;;
724                         [A-Z0-9]*)
725                                 list_append group_types_set "${arg}"
726                                 ;;
727                         *)
728                                 error "Invalid argument: ${arg}"
729                                 return ${EXIT_ERROR}
730                                 ;;
731                 esac
732                 shift
733         done
734
735         # Check if the user is trying a mixed operation
736         if ! list_is_empty group_types_set && (! list_is_empty group_types_added || ! list_is_empty group_types_removed); then
737                 error "You cannot reset the group type list and add or remove group types at the same time"
738                 return ${EXIT_ERROR}
739         fi
740
741         # Set new group type list
742         if ! list_is_empty group_types_set; then
743                 # Check if all group types are valid
744                 local group_type
745                 for group_type in ${group_types_set}; do
746                         if ! vpn_security_policies_group_type_supported ${group_type}; then
747                                 error "Unsupported group type: ${group_type}"
748                                 return ${EXIT_ERROR}
749                         fi
750                 done
751
752                 GROUP_TYPES="${group_types_set}"
753
754         # Perform incremental updates
755         else
756                 local group_type
757
758                 # Perform all removals
759                 for group_type in ${group_types_removed}; do
760                         if ! list_remove GROUP_TYPES ${group_type}; then
761                                 warning "${group_type} was not on the list and could not be removed"
762                         fi
763                 done
764
765                 for group_type in ${group_types_added}; do
766                         if vpn_security_policies_group_type_supported ${group_type}; then
767                                 if ! list_append_unique GROUP_TYPES ${group_type}; then
768                                         warning "${group_type} is already on the group type list"
769                                 fi
770                         else
771                                 warning "${group_type} is unknown or unsupported and could not be added"
772                         fi
773                 done
774         fi
775
776         # Check if the list contain at least one valid group_type
777         if list_is_empty GROUP_TYPES; then
778                 error "Cannot save an empty group type list"
779                 return ${EXIT_ERROR}
780         fi
781
782         # Save everything
783         if ! vpn_security_policies_write_config_key ${name} "GROUP_TYPES" ${GROUP_TYPES}; then
784                 log ERROR "The changes for the vpn security policy ${name} could not be written."
785         fi
786
787         cli_headline 1 "Current group type list for ${name}:"
788         for group_type in ${GROUP_TYPES}; do
789                 cli_print_fmt1 1 "${group_type}" "${VPN_SUPPORTED_GROUP_TYPES[${group_type}]}"
790         done
791 }
792
793 # This function parses the parameters for the 'integrity' command
794 vpn_security_policies_integrities() {
795         local name=${1}
796         shift
797
798         if [ $# -eq 0 ]; then
799                 log ERROR "You must pass at least one value"
800                 return ${EXIT_ERROR}
801         fi
802
803         local INTEGRITIES
804         if ! vpn_security_policies_read_config ${name} "INTEGRITIES"; then
805                 return ${EXIT_ERROR}
806         fi
807
808         # Remove duplicated entries to proceed the list safely
809         INTEGRITIES="$(list_unique ${INTEGRITIES})"
810
811         local integritys_added
812         local integritys_removed
813         local integritys_set
814
815         while [ $# -gt 0 ]; do
816                 local arg="${1}"
817
818                 case "${arg}" in
819                         +*)
820                                 list_append integritys_added "${arg:1}"
821                                 ;;
822                         -*)
823                                 list_append integritys_removed "${arg:1}"
824                                 ;;
825                         [A-Z0-9]*)
826                                 list_append integritys_set "${arg}"
827                                 ;;
828                         *)
829                                 error "Invalid argument: ${arg}"
830                                 return ${EXIT_ERROR}
831                                 ;;
832                 esac
833                 shift
834         done
835
836         # Check if the user is trying a mixed operation
837         if ! list_is_empty integritys_set && (! list_is_empty integritys_added || ! list_is_empty integritys_removed); then
838                 error "You cannot reset the integrity hashes list and add or remove integrity hashes at the same time"
839                 return ${EXIT_ERROR}
840         fi
841
842         # Set new integrity list
843         if ! list_is_empty integritys_set; then
844                 # Check if all integrity hashes are valid
845                 local integrity
846                 for integrity in ${integritys_set}; do
847                         if ! vpn_security_policies_integrity_supported ${integrity}; then
848                                 error "Unsupported integrity hash: ${integrity}"
849                                 return ${EXIT_ERROR}
850                         fi
851                 done
852
853                 INTEGRITIES="${integritys_set}"
854
855         # Perform incremental updates
856         else
857                 local integrity
858
859                 # Perform all removals
860                 for integrity in ${integritys_removed}; do
861                         if ! list_remove INTEGRITIES ${integrity}; then
862                                 warning "${integrity} was not on the list and could not be removed"
863                         fi
864                 done
865
866                 for integrity in ${integritys_added}; do
867                         if vpn_security_policies_integrity_supported ${integrity}; then
868                                 if ! list_append_unique INTEGRITIES ${integrity}; then
869                                         warning "${integrity} is already on the integrity list"
870                                 fi
871                         else
872                                 warning "${integrity} is unknown or unsupported and could not be added"
873                         fi
874                 done
875         fi
876
877         # Check if the list contain at least one valid integrity
878         if list_is_empty INTEGRITIES; then
879                 error "Cannot save an empty integrity hashes list"
880                 return ${EXIT_ERROR}
881         fi
882
883         # Save everything
884         if ! vpn_security_policies_write_config_key ${name} "INTEGRITIES" ${INTEGRITIES}; then
885                 log ERROR "The changes for the vpn security policy ${name} could not be written."
886         fi
887
888         cli_headline 1 "Current integrity hashes list for ${name}:"
889         for integrity in ${INTEGRITIES}; do
890                 cli_print_fmt1 1 "${integrity}" "${VPN_SUPPORTED_INTEGRITIES[${integrity}]}"
891         done
892 }
893
894 # This function parses the parameters for the 'pseudo-random-functions' command
895 vpn_security_policies_pseudo_random_functions() {
896         local name=${1}
897         shift
898
899         if [ $# -eq 0 ]; then
900                 log ERROR "You must pass at least one value"
901                 return ${EXIT_ERROR}
902         fi
903
904         local PSEUDO_RANDOM_FUNCTIONS
905         if ! vpn_security_policies_read_config ${name} "PSEUDO_RANDOM_FUNCTIONS"; then
906                 return ${EXIT_ERROR}
907         fi
908
909         # Remove duplicated entries to proceed the list safely
910         PSEUDO_RANDOM_FUNCTIONS="$(list_unique ${PSEUDO_RANDOM_FUNCTIONS})"
911
912         local prfs_added
913         local prfs_removed
914         local prfs_set
915
916         while [ $# -gt 0 ]; do
917                 local arg="${1}"
918
919                 case "${arg}" in
920                         +*)
921                                 list_append prfs_added "${arg:1}"
922                                 ;;
923                         -*)
924                                 list_append prfs_removed "${arg:1}"
925                                 ;;
926                         [A-Z0-9]*)
927                                 list_append prfs_set "${arg}"
928                                 ;;
929                         *)
930                                 error "Invalid argument: ${arg}"
931                                 return ${EXIT_ERROR}
932                                 ;;
933                 esac
934                 shift
935         done
936
937         # Check if the user is trying a mixed operation
938         if ! list_is_empty prfs_set && (! list_is_empty prfs_added || ! list_is_empty prfs_removed); then
939                 error "You cannot reset the pseudo random function list and add or remove functions at the same time"
940                 return ${EXIT_ERROR}
941         fi
942
943         # Set new psudo random function list
944         if ! list_is_empty prfs_set; then
945                 # Check if all PRFs are valid
946                 local prf
947                 for prf in ${prfs_set}; do
948                         if ! vpn_security_policies_pseudo_random_function_supported "${prf}"; then
949                                 error "Unsupported pseudo random function: ${prf}"
950                                 return ${EXIT_ERROR}
951                         fi
952                 done
953
954                 PSEUDO_RANDOM_FUNCTIONS="${prfs_set}"
955
956         # Perform incremental updates
957         else
958                 local prf
959
960                 # Perform all removals
961                 for prf in ${prfs_removed}; do
962                         if ! list_remove PSEUDO_RANDOM_FUNCTIONS "${prf}"; then
963                                 warning "${prf} was not on the list and could not be removed"
964                         fi
965                 done
966
967                 for prf in ${prfs_added}; do
968                         if vpn_security_policies_pseudo_random_function_supported "${prf}"; then
969                                 if ! list_append_unique PSEUDO_RANDOM_FUNCTIONS "${prf}"; then
970                                         warning "${prf} is already on the list"
971                                 fi
972                         else
973                                 warning "${prf} is unknown or unsupported and could not be added"
974                         fi
975                 done
976         fi
977
978         # Check if the list contain at least one valid value
979         if list_is_empty PSEUDO_RANDOM_FUNCTIONS; then
980                 error "Cannot save an empty list of pseudo random functions"
981                 return ${EXIT_ERROR}
982         fi
983
984         # Save everything
985         if ! vpn_security_policies_write_config_key "${name}" "PSEUDO_RANDOM_FUNCTIONS" "${PSEUDO_RANDOM_FUNCTIONS}"; then
986                 log ERROR "The changes for the VPN security policy ${name} could not be written"
987         fi
988
989         cli_headline 1 "Current pseudo random function list for ${name}:"
990         for prf in ${PSEUDO_RANDOM_FUNCTIONS}; do
991                 cli_print_fmt1 1 "${prf}" "${VPN_SUPPORTED_PSEUDO_RANDOM_FUNCTIONS[${prf}]}"
992         done
993 }
994
995 # This function parses the parameters for the 'key-exchange' command
996 vpn_security_policies_key_exchange() {
997         local name=${1}
998         local value=${2}
999
1000         # Check if we get only one argument after key-exchange <name>
1001         if [ ! $# -eq 2 ]; then
1002                 log ERROR "The number of arguments do not match. Only argument after key-exchange is allowed."
1003                 return ${EXIT_ERROR}
1004         fi
1005
1006         if ! isoneof value "ikev1" "ikev2" "IKEV1" "IKEV2"; then
1007                 log ERROR "Invalid Argument ${value}"
1008                 return ${EXIT_ERROR}
1009         fi
1010
1011         vpn_security_policies_write_config_key "${name}" "KEY_EXCHANGE" "${value,,}"
1012 }
1013
1014 # This function parses the parameters for the 'lifetime' command.
1015 vpn_security_policies_lifetime(){
1016         local name=${1}
1017         shift
1018
1019         local value=$@
1020
1021         # Check if we get only one argument after lifetime <name>
1022         if [ ! $# -ge 1 ]; then
1023                 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"
1024                 return ${EXIT_ERROR}
1025         fi
1026
1027         if ! isinteger value; then
1028                 value=$(parse_time "$@")
1029                 if [ ! $? -eq 0 ]; then
1030                         log ERROR "Parsing the passed time was not sucessful please check the passed values."
1031                         return ${EXIT_ERROR}
1032                 fi
1033         fi
1034
1035         if [ ${value} -le 0 ]; then
1036                 log ERROR "The passed time value must be in the sum greater zero seconds."
1037                 return ${EXIT_ERROR}
1038         fi
1039
1040         vpn_security_policies_write_config_key "${name}" "LIFETIME" "${value}"
1041 }
1042
1043 # This function parses the parameters for the 'pfs' command
1044 vpn_security_policies_pfs(){
1045         local name=${1}
1046         local value=${2}
1047
1048         # Check if we get only one argument after pfs <name>
1049         if [ ! $# -eq 2 ]; then
1050                 log ERROR "The number of arguments do not match. Only argument after pfs is allowed."
1051                 return ${EXIT_ERROR}
1052         fi
1053
1054         if [ ! $# -eq 2 ] || ! isbool value; then
1055                 # We suggest only two values to avoid overburding the user.
1056                 log ERROR "Invalid Argument ${value}"
1057                 return ${EXIT_ERROR}
1058         fi
1059
1060         vpn_security_policies_write_config_key "${name}" "PFS" "${value}"
1061 }
1062
1063 # This function checks if a vpn security policy name is valid
1064 # Allowed are only A-Za-z0-9
1065 vpn_security_policies_check_name() {
1066         assert [ $# -eq 1 ]
1067
1068         local name=${1}
1069
1070         [[ ${name} =~ [^[:alnum:]$] ]]
1071 }
1072
1073 # Function that creates based on the paramters one ore more new vpn security policies
1074 vpn_security_policies_new() {
1075         if [ $# -gt 1 ]; then
1076                 error "Too many arguments"
1077                 return ${EXIT_ERROR}
1078         fi
1079
1080         local name="${1}"
1081         if ! isset name; then
1082                 error "Please provide a name"
1083                 return ${EXIT_ERROR}
1084         fi
1085
1086         # Check for duplicates
1087         if vpn_security_policy_exists "${name}"; then
1088                 error "The VPN security policy with name ${name} already exists"
1089                 return ${EXIT_ERROR}
1090         fi
1091
1092         # Check if name is valid
1093         if  vpn_security_policies_check_name "${name}"; then
1094                 error "'${name}' contains illegal characters"
1095                 return ${EXIT_ERROR}
1096         fi
1097
1098         # Check if we have a read-only policy with the same name
1099         if vpn_security_policies_check_readonly "${name}"; then
1100                 error "The VPN security policy ${name} is read-only"
1101                 return ${EXIT_ERROR}
1102         fi
1103
1104         # Check if our source policy exists
1105         if ! vpn_security_policy_exists "${VPN_DEFAULT_SECURITY_POLICY}"; then
1106                 error "Default VPN Security Policy '${VPN_DEFAULT_SECURITY_POLICY}' does not exist"
1107                 return ${EXIT_ERROR}
1108         fi
1109
1110         log DEBUG "Creating VPN Security Policy ${name}"
1111
1112         if copy "$(vpn_security_policies_path "${VPN_DEFAULT_SECURITY_POLICY}")" \
1113                         "$(vpn_security_policies_path ${name})"; then
1114                 log INFO "VPN Security Policy ${name} successfully created"
1115         else
1116                 log ERROR "Could not create VPN Security Policy ${name}"
1117                 return ${EXIT_ERROR}
1118         fi
1119
1120         # Show the newly created policy
1121         vpn_security_policies_show "${name}"
1122 }
1123
1124 # Function that deletes based on the passed parameters one ore more vpn security policies
1125 vpn_security_policies_destroy() {
1126         local name
1127         for name in "$@"; do
1128                 if ! vpn_security_policy_exists ${name}; then
1129                         log ERROR "The vpn security policy ${name} does not exist."
1130                         continue
1131                 fi
1132
1133                 if vpn_security_policies_check_readonly ${name}; then
1134                         log ERROR "The vpn security policy ${name} cannot be deleted."
1135                         continue
1136                 fi
1137
1138                 log DEBUG "Deleting vpn security policy ${name}"
1139                 settings_remove $(vpn_security_policies_path ${name})
1140
1141                 # Delete cache
1142                 rm -rf "${NETWORK_CACHE_DIR}/vpn/security-policies/${name}"
1143         done
1144 }
1145
1146 vpn_security_policies_cipher_supported() {
1147         local cipher=${1}
1148
1149         list_match ${cipher} ${!VPN_SUPPORTED_CIPHERS[@]}
1150 }
1151
1152
1153 vpn_security_policies_group_type_supported() {
1154         local group_type=${1}
1155
1156         list_match ${group_type} ${!VPN_SUPPORTED_GROUP_TYPES[@]}
1157 }
1158
1159 vpn_security_policies_integrity_supported() {
1160         local integrity=${1}
1161
1162         list_match ${integrity} ${!VPN_SUPPORTED_INTEGRITIES[@]}
1163 }
1164
1165 vpn_security_policies_pseudo_random_function_supported() {
1166         local prf="${1}"
1167
1168         list_match "${prf}" ${!VPN_SUPPORTED_PSEUDO_RANDOM_FUNCTIONS[@]}
1169 }
1170
1171 vpn_security_policies_cipher_is_aead() {
1172         local cipher=${1}
1173
1174         # All CCM and GCM ciphers are AEAD
1175         if string_match "[CG]CM" "${cipher}"; then
1176                 return ${EXIT_TRUE}
1177         fi
1178
1179         # Poly1305 is AEAD
1180         if string_match "POLY1305" "${cipher}"; then
1181                 return ${EXIT_TRUE}
1182         fi
1183
1184         return ${EXIT_FALSE}
1185 }
1186
1187 vpn_security_policies_make_ike_proposal() {
1188         local name=${1}
1189
1190         if ! vpn_security_policy_exists ${name}; then
1191                 return ${EXIT_ERROR}
1192         fi
1193
1194         local config_path="$(vpn_security_policies_path ${name})"
1195         local cache_path="${NETWORK_CACHE_DIR}/vpn/security-policies/${name}/ike-proposal"
1196
1197         # Get data from cache if possible
1198         if file_exists "${cache_path}" && ! file_is_newer_than "${config_path}" "${cache_path}"; then
1199                 fread "${cache_path}"
1200                 return ${EXIT_OK}
1201         fi
1202
1203         # No or invalid cache data found
1204         local proposal=$(_vpn_security_policies_make_ike_proposal "${name}")
1205
1206         # Write proposal to cache
1207         if ! make_parent_directory "${cache_path}" || ! fwrite "${cache_path}" "${proposal}"; then
1208                 log WARNING "Could not write to cache: ${cache_path}"
1209         fi
1210
1211         print "${proposal}"
1212 }
1213
1214 _vpn_security_policies_make_ike_proposal() {
1215         local name=${1}
1216
1217         # Read the config settings
1218         local ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
1219         if ! vpn_security_policies_read_config "${name}"; then
1220                 return ${EXIT_ERROR}
1221         fi
1222
1223         local proposals
1224
1225         local cipher
1226         for cipher in ${CIPHERS}; do
1227                 # Translate cipher
1228                 local _cipher=${CIPHER_TO_STRONGSWAN[${cipher}]}
1229
1230                 if ! isset _cipher; then
1231                         log WARN "Unsupported cipher: ${cipher}"
1232                         continue
1233                 fi
1234
1235                 if vpn_security_policies_cipher_is_aead "${cipher}"; then
1236                         local prf
1237                         for prf in ${PSEUDO_RANDOM_FUNCTIONS}; do
1238                                 local _prf="${PSEUDO_RANDOM_FUNCTION_TO_STRONGSWAN[${prf}]}"
1239
1240                                 if ! isset _prf; then
1241                                         log WARN "Unsupported pseudo random function: ${prf}"
1242                                         continue
1243                                 fi
1244
1245                                 local group_type
1246                                 for group_type in ${GROUP_TYPES}; do
1247                                         local _group_type=${GROUP_TYPE_TO_STRONGSWAN[${group_type}]}
1248
1249                                         if ! isset _group_type; then
1250                                                 log WARN "Unsupported group-type: ${group_type}"
1251                                                 continue
1252                                         fi
1253
1254                                         # Put everything together
1255                                         list_append proposals "${_cipher}-${_prf}-${_group_type}"
1256                                 done
1257                         done
1258                 else
1259                         local integrity
1260                         for integrity in ${INTEGRITIES}; do
1261                                 local _integrity=${INTEGRITY_TO_STRONGSWAN[${integrity}]}
1262
1263                                 if ! isset _integrity; then
1264                                         log WARN "Unsupported integrity: ${integrity}"
1265                                         continue
1266                                 fi
1267
1268                                 local group_type
1269                                 for group_type in ${GROUP_TYPES}; do
1270                                         local _group_type=${GROUP_TYPE_TO_STRONGSWAN[${group_type}]}
1271
1272                                         if ! isset _group_type; then
1273                                                 log WARN "Unsupported group-type: ${group_type}"
1274                                                 continue
1275                                         fi
1276
1277                                         # Put everything together
1278                                         list_append proposals "${_cipher}-${_integrity}-${_group_type}"
1279                                 done
1280                         done
1281                 fi
1282         done
1283
1284         # Returns as a comma-separated list
1285         list_join proposals ,
1286 }
1287
1288 vpn_security_policies_make_esp_proposal() {
1289         local name=${1}
1290
1291         if ! vpn_security_policy_exists ${name}; then
1292                 return ${EXIT_ERROR}
1293         fi
1294
1295         local config_path="$(vpn_security_policies_path ${name})"
1296         local cache_path="${NETWORK_CACHE_DIR}/vpn/security-policies/${name}/esp-proposal"
1297
1298         # Get data from cache if possible
1299         if file_exists "${cache_path}" && ! file_is_newer_than "${config_path}" "${cache_path}"; then
1300                 fread "${cache_path}"
1301                 return ${EXIT_OK}
1302         fi
1303
1304         # No or invalid cache data found
1305         local proposal=$(_vpn_security_policies_make_esp_proposal "${name}")
1306
1307         # Write proposal to cache
1308         if ! make_parent_directory "${cache_path}" || ! fwrite "${cache_path}" "${proposal}"; then
1309                 log WARNING "Could not write to cache: ${cache_path}"
1310         fi
1311
1312         print "${proposal}"
1313 }
1314
1315 _vpn_security_policies_make_esp_proposal() {
1316         local name=${1}
1317
1318         # Read the config settings
1319         local ${VPN_SECURITY_POLICIES_CONFIG_SETTINGS}
1320         if ! vpn_security_policies_read_config "${name}"; then
1321                 return ${EXIT_ERROR}
1322         fi
1323
1324         local proposals
1325
1326         local cipher
1327         for cipher in ${CIPHERS}; do
1328                 # Translate cipher
1329                 local _cipher=${CIPHER_TO_STRONGSWAN[${cipher}]}
1330
1331                 if ! isset _cipher; then
1332                         log WARN "Unsupported cipher: ${cipher}"
1333                         continue
1334                 fi
1335
1336                 if vpn_security_policies_cipher_is_aead ${cipher}; then
1337                         local group_type
1338                         for group_type in ${GROUP_TYPES}; do
1339                                 local _group_type=${GROUP_TYPE_TO_STRONGSWAN[${group_type}]}
1340
1341                                 if ! isset _group_type; then
1342                                         log WARN "Unsupported group-type: ${group_type}"
1343                                         continue
1344                                 fi
1345
1346                                 # Put everything together
1347                                 list_append proposals "${_cipher}-${_group_type}"
1348                         done
1349                 else
1350                         local integrity
1351                         for integrity in ${INTEGRITIES}; do
1352                                 local _integrity=${INTEGRITY_TO_STRONGSWAN[${integrity}]}
1353
1354                                 if ! isset _integrity; then
1355                                         log WARN "Unsupported integrity: ${integrity}"
1356                                         continue
1357                                 fi
1358
1359                                 local group_type
1360                                 for group_type in ${GROUP_TYPES}; do
1361                                         local _group_type=${GROUP_TYPE_TO_STRONGSWAN[${group_type}]}
1362
1363                                         if ! isset _group_type; then
1364                                                 log WARN "Unsupported group-type: ${group_type}"
1365                                                 continue
1366                                         fi
1367
1368                                         # Put everything together
1369                                         list_append proposals "${_cipher}-${_integrity}-${_group_type}"
1370                                 done
1371                         done
1372                 fi
1373         done
1374
1375         # Returns as a comma-separated list
1376         list_join proposals ,
1377 }
1378
1379 # List all security policies
1380 vpn_security_policies_list_all() {
1381         list_directory "${NETWORK_SHARE_DIR}/vpn/security-policies"
1382
1383         # Add all user-defined policies
1384         vpn_security_policies_list_user
1385 }
1386
1387 vpn_security_policies_list_user() {
1388         list_directory "${NETWORK_CONFIG_DIR}/vpn/security-policies"
1389 }