host/mobile/sms: Adding SMS support for osmocomBB/mobile

Both MO and MT SMS are supported.

Transmission an reception can be controlled via VTY:

en
sms 1 <destination> <text>

All received SMS are stored in "~/.osmocom/bb/sms.txt".

SMS transmission is performed on SAPI 3 datalink, using DCCH or ACCH.

Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

4 files changed, 44 insertions, 9 deletions

diff --git a/src/host/layer23/include/osmocom/bb/mobile/Makefile.am b/src/host/layer23/include/osmocom/bb/mobile/Makefile.am
index 65b7ce76..7f49d5e9 100644
--- a/src/host/layer23/include/osmocom/bb/mobile/Makefile.am
+++ b/src/host/layer23/include/osmocom/bb/mobile/Makefile.am
@@ -1,2 +1,3 @@
-noinst_HEADERS = gsm322.h gsm48_cc.h gsm48_mm.h gsm48_rr.h mncc.h settings.h \
-		 subscriber.h support.h transaction.h vty.h mncc_sock.h
+noinst_HEADERS = gsm322.h gsm411_sms.h gsm48_cc.h gsm48_mm.h gsm48_rr.h mncc.h \
+		 settings.h subscriber.h support.h transaction.h vty.h \
+		 mncc_sock.h
diff --git a/src/host/layer23/include/osmocom/bb/mobile/gsm411_sms.h b/src/host/layer23/include/osmocom/bb/mobile/gsm411_sms.h
new file mode 100644
index 00000000..61019de6
--- /dev/null
+++ b/src/host/layer23/include/osmocom/bb/mobile/gsm411_sms.h
@@ -0,0 +1,33 @@
+#ifndef _GSM411_SMS_H
+#define _GSM411_SMS_H
+
+#define SMS_HDR_SIZE	128
+#define SMS_TEXT_SIZE	256
+
+struct gsm_sms {
+	unsigned long validity_minutes;
+	uint8_t reply_path_req;
+	uint8_t status_rep_req;
+	uint8_t ud_hdr_ind;
+	uint8_t protocol_id;
+	uint8_t data_coding_scheme;
+	uint8_t msg_ref;
+	char address[20+1];	/* DA LV is 12 bytes max, i.e. 10 bytes
+				 * BCD == 20 bytes string */
+	time_t time;
+	uint8_t user_data_len;
+	uint8_t user_data[SMS_TEXT_SIZE];
+
+	char text[SMS_TEXT_SIZE];
+};
+
+int gsm411_sms_init(struct osmocom_ms *ms);
+int gsm411_sms_exit(struct osmocom_ms *ms);
+struct gsm_sms *sms_alloc(void);
+void sms_free(struct gsm_sms *sms);
+struct gsm_sms *sms_from_text(const char *receiver, int dcs, const char *text);
+int gsm411_tx_sms_submit(struct osmocom_ms *ms, struct gsm_sms *sms);
+int gsm411_rcv_sms(struct osmocom_ms *ms, struct msgb *msg);
+int sms_send(struct osmocom_ms *ms, const char *number, const char *text);
+
+#endif /* _GSM411_SMS_H */
diff --git a/src/host/layer23/include/osmocom/bb/mobile/settings.h b/src/host/layer23/include/osmocom/bb/mobile/settings.h
index cd1b8001..8442f038 100644
--- a/src/host/layer23/include/osmocom/bb/mobile/settings.h
+++ b/src/host/layer23/include/osmocom/bb/mobile/settings.h
@@ -23,6 +23,9 @@ struct gsm_settings {
 	int			sim_type; /* selects card on power on */
 	char 			emergency_imsi[16];
 
+	/* SMS */
+	char			sms_sca[12];
+
 	/* test card simulator settings */
 	char 			test_imsi[16];
 	uint32_t		test_tmsi;
diff --git a/src/host/layer23/include/osmocom/bb/mobile/transaction.h b/src/host/layer23/include/osmocom/bb/mobile/transaction.h
index aa62f465..b0695ecb 100644
--- a/src/host/layer23/include/osmocom/bb/mobile/transaction.h
+++ b/src/host/layer23/include/osmocom/bb/mobile/transaction.h
@@ -2,6 +2,8 @@
 #define _TRANSACT_H
 
 #include <osmocom/core/linuxlist.h>
+#include <osmocom/gsm/gsm0411_smc.h>
+#include <osmocom/gsm/gsm0411_smr.h>
 
 /* One transaction */
 struct gsm_trans {
@@ -38,18 +40,14 @@ struct gsm_trans {
 			struct osmo_timer_list timer;
 			struct gsm_mncc msg;	/* stores setup/disconnect/release message */
 		} cc;
-#if 0
 		struct {
-			uint8_t link_id;	/* RSL Link ID to be used for this trans */
-			int is_mt;	/* is this a MO (0) or MT (1) transfer */
-			enum gsm411_cp_state cp_state;
-			struct osmo_timer_list cp_timer;
+			uint8_t sapi;	/* SAPI to be used for this trans */
 
-			enum gsm411_rp_state rp_state;
+			struct gsm411_smc_inst smc_inst;
+			struct gsm411_smr_inst smr_inst;
 
 			struct gsm_sms *sms;
 		} sms;
-#endif
 	};
 };