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authorJacob Erlbeck <jerlbeck@sysmocom.de>2014-12-08 15:52:00 +0100
committerHolger Hans Peter Freyther <holger@moiji-mobile.com>2014-12-24 16:50:16 +0100
commit7921ab1593f45f12588e074ad1280472416ae930 (patch)
tree4eaed783c52f5a24d07c1521886469b3282d08bf /openbsc/src/gprs/sgsn_vty.c
parent7dba11fe32615fb5e49fae0a3bbd787ce4abc9b7 (diff)
sgsn: Add support for authentication triplets
This commit add data structures, functions, initialization, and VTY commands for per subscriber authentication triplets. The following VTY command is added: - update-subscriber imsi IMSI \ insert auth-triplet <1-5> sres SRES rand RAND kc KC Note that the triplets are not really used by the SGSN yet. Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/src/gprs/sgsn_vty.c')
-rw-r--r--openbsc/src/gprs/sgsn_vty.c79
1 files changed, 78 insertions, 1 deletions
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 4bb6a86a4..99c59853b 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -380,6 +380,8 @@ DEFUN(cfg_auth_policy, cfg_auth_policy_cmd,
static void subscr_dump_full_vty(struct vty *vty, struct gsm_subscriber *subscr, int pending)
{
char expire_time[200];
+ struct gsm_auth_tuple *at;
+ int at_idx;
vty_out(vty, " ID: %llu, Authorized: %d%s", subscr->id,
subscr->authorized, VTY_NEWLINE);
@@ -398,6 +400,25 @@ static void subscr_dump_full_vty(struct vty *vty, struct gsm_subscriber *subscr,
if (strlen(subscr->equipment.imei) > 0)
vty_out(vty, " IMEI: %s%s", subscr->equipment.imei, VTY_NEWLINE);
+ for (at_idx = 0; at_idx < ARRAY_SIZE(subscr->sgsn_data->auth_triplets);
+ at_idx++) {
+ at = &subscr->sgsn_data->auth_triplets[at_idx];
+ if (at->key_seq == GSM_KEY_SEQ_INVAL)
+ continue;
+
+ vty_out(vty, " A3A8 tuple (used %d times): ",
+ at->use_count);
+ vty_out(vty, " seq # : %d, ",
+ at->key_seq);
+ vty_out(vty, " RAND : %s, ",
+ osmo_hexdump(at->rand, sizeof(at->rand)));
+ vty_out(vty, " SRES : %s, ",
+ osmo_hexdump(at->sres, sizeof(at->sres)));
+ vty_out(vty, " Kc : %s%s",
+ osmo_hexdump(at->kc, sizeof(at->kc)),
+ VTY_NEWLINE);
+ }
+
/* print the expiration time of a subscriber */
if (subscr->expire_lu) {
strftime(expire_time, sizeof(expire_time),
@@ -440,10 +461,12 @@ DEFUN(show_subscr_cache,
"Use the IMSI to select the subscriber\n" \
"The IMSI\n"
+#define UPDATE_SUBSCR_INSERT_HELP "Insert data into the subscriber record\n"
+
DEFUN(update_subscr_insert, update_subscr_insert_cmd,
UPDATE_SUBSCR_STR "insert (authorized|authenticate) (0|1)",
UPDATE_SUBSCR_HELP
- "Insert data into the subscriber record\n"
+ UPDATE_SUBSCR_INSERT_HELP
"Authorize the subscriber to attach\n"
"New option value\n")
{
@@ -469,6 +492,59 @@ DEFUN(update_subscr_insert, update_subscr_insert_cmd,
return CMD_SUCCESS;
}
+DEFUN(update_subscr_insert_auth_triplet, update_subscr_insert_auth_triplet_cmd,
+ UPDATE_SUBSCR_STR "insert auth-triplet <1-5> sres SRES rand RAND kc KC",
+ UPDATE_SUBSCR_HELP
+ UPDATE_SUBSCR_INSERT_HELP
+ "Update authentication triplet\n"
+ "Triplet index\n"
+ "Set SRES value\nSRES value (4 byte) in hex\n"
+ "Set RAND value\nRAND value (16 byte) in hex\n"
+ "Set Kc value\nKc value (8 byte) in hex\n")
+{
+ const char *imsi = argv[0];
+ const int cksn = atoi(argv[1]) - 1;
+ const char *sres_str = argv[2];
+ const char *rand_str = argv[3];
+ const char *kc_str = argv[4];
+ struct gsm_auth_tuple at = {0,};
+
+ struct gsm_subscriber *subscr;
+
+ subscr = gprs_subscr_get_or_create(imsi);
+ if (!subscr) {
+ vty_out(vty, "%% unable get subscriber record for %s\n", imsi);
+ return CMD_WARNING;
+ }
+
+ OSMO_ASSERT(subscr->sgsn_data);
+
+ if (!osmo_hexparse(sres_str, &at.sres[0], sizeof(at.sres)) < 0) {
+ vty_out(vty, "%% invalid SRES value '%s'\n", sres_str);
+ goto failed;
+ }
+ if (!osmo_hexparse(rand_str, &at.rand[0], sizeof(at.rand)) < 0) {
+ vty_out(vty, "%% invalid RAND value '%s'\n", rand_str);
+ goto failed;
+ }
+ if (!osmo_hexparse(kc_str, &at.kc[0], sizeof(at.kc)) < 0) {
+ vty_out(vty, "%% invalid Kc value '%s'\n", kc_str);
+ goto failed;
+ }
+ at.key_seq = cksn;
+
+ subscr->sgsn_data->auth_triplets[cksn] = at;
+ subscr->sgsn_data->auth_triplets_updated = 1;
+
+ subscr_put(subscr);
+
+ return CMD_SUCCESS;
+
+failed:
+ subscr_put(subscr);
+ return CMD_SUCCESS;
+}
+
DEFUN(update_subscr_cancel, update_subscr_cancel_cmd,
UPDATE_SUBSCR_STR "cancel",
UPDATE_SUBSCR_HELP
@@ -521,6 +597,7 @@ int sgsn_vty_init(void)
install_element_ve(&show_subscr_cache_cmd);
install_element(ENABLE_NODE, &update_subscr_insert_cmd);
+ install_element(ENABLE_NODE, &update_subscr_insert_auth_triplet_cmd);
install_element(ENABLE_NODE, &update_subscr_cancel_cmd);
install_element(ENABLE_NODE, &update_subscr_commit_cmd);