License change: We are now AGPLv3+ instead of GPLv2+
The reason for this is quite simple: We want to make sure anyone
running a customized version of OpenBSC to operate a network will
have to release all custom modifiations to the source code.
diff --git a/openbsc/src/imsi-catcher.c b/openbsc/src/imsi-catcher.c
new file mode 100644
index 0000000..86c50ba
--- /dev/null
+++ b/openbsc/src/imsi-catcher.c
@@ -0,0 +1,65 @@
+
+#include <openbsc/linuxlist.h>
+
+struct network_info {
+ struct llist_head list;
+
+ u_int16_t mcc;
+ u_int16_t mnc;
+
+ struct llist_head bcch_infos;
+};
+
+static LLIST_HEAD(bcch_infos);
+
+static LLIST_HEAD(network_infos);
+
+static struct network_info *network_find(u_int16_t mcc, u_int16_t mnc)
+{
+ struct network_info *ni;
+
+ llist_for_each_head(ni, &network_infos, list) {
+ if (ni->mcc == mcc && ni->mnc == mnc)
+ return ni;
+ }
+
+ return NULL;
+}
+
+static struct network_info *network_alloc(u_int16_t mcc, u_int16_t mnc)
+{
+ struct network_info *ni = talloc_zero(NULL, struct network_info);
+
+ if (!ni)
+ return NULL;
+
+ ni->mcc = mcc;
+ ni->mnc = mnc;
+
+ llist_add_tail(&ni->list, &network_infos);
+
+ return ni;
+}
+
+/* here we get handed in the BCCH info structure */
+int receive_bcch_info(const struct ipac_bcch_info *binfo)
+{
+ struct ipac_bcch_info *binfo2;
+ struct network_info *ni;
+
+ binfo2 = talloc_zero(NULL, struct ipac_bcch_info);
+ if (!binfo2)
+ return -ENOMEM;
+
+ memcpy(binfo2, binfo, sizeof(*binfo2));
+
+ ni = network_find(binfo->cgi.mcc, binfo->cgi.mnc);
+ if (!ni)
+ ni = network_alloc(binfo->cgi.mcc, binfo->cgi.mnc);
+
+ llist_add_tail(&binfo2->list, &ni->bcch_infos);
+
+ return 0;
+}
+
+