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