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authorJouni Malinen <j@w1.fi>2012-05-03 19:39:49 (GMT)
committerJouni Malinen <j@w1.fi>2012-05-03 19:39:49 (GMT)
commit5336861301e2a7040ae32051d41176700cd4a3d8 (patch)
tree91bb96fce6df9ec934906657a2c3a700cbb53f0a /hostapd/hlr_auc_gw.c
parent057a92ec5c93c180277744a9de228e4142e6a3af (diff)
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hlr_auc_gw: Add support for updating Milenage file SQN
If the new command line argument -u is used, hlr_auc_gw will update the Milenage file SQN numbers when exiting based on what was the last SQN used during the process runtime. Signed-hostap: Jouni Malinen <j@w1.fi>
Diffstat (limited to 'hostapd/hlr_auc_gw.c')
-rw-r--r--hostapd/hlr_auc_gw.c95
1 files changed, 90 insertions, 5 deletions
diff --git a/hostapd/hlr_auc_gw.c b/hostapd/hlr_auc_gw.c
index 8b7455f..91772a6 100644
--- a/hostapd/hlr_auc_gw.c
+++ b/hostapd/hlr_auc_gw.c
@@ -1,6 +1,6 @@
/*
* HLR/AuC testing gateway for hostapd EAP-SIM/AKA database/authenticator
- * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2005-2007, 2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
@@ -47,6 +47,9 @@
static const char *default_socket_path = "/tmp/hlr_auc_gw.sock";
static const char *socket_path;
static int serv_sock = -1;
+static char *milenage_file = NULL;
+static int update_milenage = 0;
+static int sqn_changes = 0;
/* GSM triplets */
struct gsm_triplet {
@@ -368,6 +371,80 @@ static int read_milenage(const char *fname)
}
+static void update_milenage_file(const char *fname)
+{
+ FILE *f, *f2;
+ char buf[500], *pos;
+ char *end = buf + sizeof(buf);
+ struct milenage_parameters *m;
+ size_t imsi_len;
+
+ f = fopen(fname, "r");
+ if (f == NULL) {
+ printf("Could not open Milenage data file '%s'\n", fname);
+ return;
+ }
+
+ snprintf(buf, sizeof(buf), "%s.new", fname);
+ f2 = fopen(buf, "w");
+ if (f2 == NULL) {
+ printf("Could not write Milenage data file '%s'\n", buf);
+ fclose(f);
+ return;
+ }
+
+ while (fgets(buf, sizeof(buf), f)) {
+ /* IMSI Ki OPc AMF SQN */
+ buf[sizeof(buf) - 1] = '\0';
+
+ pos = strchr(buf, ' ');
+ if (buf[0] == '#' || pos == NULL || pos - buf >= 20)
+ goto no_update;
+
+ imsi_len = pos - buf;
+
+ for (m = milenage_db; m; m = m->next) {
+ if (strncmp(buf, m->imsi, imsi_len) == 0 &&
+ m->imsi[imsi_len] == '\0')
+ break;
+ }
+
+ if (!m)
+ goto no_update;
+
+ pos = buf;
+ pos += snprintf(pos, end - pos, "%s ", m->imsi);
+ pos += wpa_snprintf_hex(pos, end - pos, m->ki, 16);
+ *pos++ = ' ';
+ pos += wpa_snprintf_hex(pos, end - pos, m->opc, 16);
+ *pos++ = ' ';
+ pos += wpa_snprintf_hex(pos, end - pos, m->amf, 2);
+ *pos++ = ' ';
+ pos += wpa_snprintf_hex(pos, end - pos, m->sqn, 6);
+ *pos++ = '\n';
+
+ no_update:
+ fprintf(f2, "%s", buf);
+ }
+
+ fclose(f2);
+ fclose(f);
+
+ snprintf(buf, sizeof(buf), "%s.bak", fname);
+ if (rename(fname, buf) < 0) {
+ perror("rename");
+ return;
+ }
+
+ snprintf(buf, sizeof(buf), "%s.new", fname);
+ if (rename(buf, fname) < 0) {
+ perror("rename");
+ return;
+ }
+
+}
+
+
static struct milenage_parameters * get_milenage(const char *imsi)
{
struct milenage_parameters *m = milenage_db;
@@ -480,6 +557,7 @@ static void aka_req_auth(int s, struct sockaddr_un *from, socklen_t fromlen,
return;
res_len = EAP_AKA_RES_MAX_LEN;
inc_byte_array(m->sqn, 6);
+ sqn_changes = 1;
printf("AKA: Milenage with SQN=%02x%02x%02x%02x%02x%02x\n",
m->sqn[0], m->sqn[1], m->sqn[2],
m->sqn[3], m->sqn[4], m->sqn[5]);
@@ -563,6 +641,7 @@ static void aka_auts(int s, struct sockaddr_un *from, socklen_t fromlen,
printf("AKA-AUTS: Re-synchronized: "
"SQN=%02x%02x%02x%02x%02x%02x\n",
sqn[0], sqn[1], sqn[2], sqn[3], sqn[4], sqn[5]);
+ sqn_changes = 1;
}
}
@@ -609,6 +688,9 @@ static void cleanup(void)
struct gsm_triplet *g, *gprev;
struct milenage_parameters *m, *prev;
+ if (update_milenage && milenage_file && sqn_changes)
+ update_milenage_file(milenage_file);
+
g = gsm_db;
while (g) {
gprev = g;
@@ -639,14 +721,15 @@ static void usage(void)
{
printf("HLR/AuC testing gateway for hostapd EAP-SIM/AKA "
"database/authenticator\n"
- "Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>\n"
+ "Copyright (c) 2005-2007, 2012, Jouni Malinen <j@w1.fi>\n"
"\n"
"usage:\n"
- "hlr_auc_gw [-h] [-s<socket path>] [-g<triplet file>] "
+ "hlr_auc_gw [-hu] [-s<socket path>] [-g<triplet file>] "
"[-m<milenage file>]\n"
"\n"
"options:\n"
" -h = show this usage help\n"
+ " -u = update SQN in Milenage file on exit\n"
" -s<socket path> = path for UNIX domain socket\n"
" (default: %s)\n"
" -g<triplet file> = path for GSM authentication triplets\n"
@@ -658,7 +741,6 @@ static void usage(void)
int main(int argc, char *argv[])
{
int c;
- char *milenage_file = NULL;
char *gsm_triplet_file = NULL;
if (os_program_init())
@@ -667,7 +749,7 @@ int main(int argc, char *argv[])
socket_path = default_socket_path;
for (;;) {
- c = getopt(argc, argv, "g:hm:s:");
+ c = getopt(argc, argv, "g:hm:s:u");
if (c < 0)
break;
switch (c) {
@@ -683,6 +765,9 @@ int main(int argc, char *argv[])
case 's':
socket_path = optarg;
break;
+ case 'u':
+ update_milenage = 1;
+ break;
default:
usage();
return -1;