Merge commit '7459d6cfd1765f8431b3d9a262eff332f9af807c' into sylvain/pending

5 files changed, 217 insertions, 27 deletions

diff --git a/src/shared/libosmocore/src/Makefile.am b/src/shared/libosmocore/src/Makefile.am
index a20fbc86..e197e179 100644
--- a/src/shared/libosmocore/src/Makefile.am
+++ b/src/shared/libosmocore/src/Makefile.am
@@ -13,7 +13,7 @@ libosmocore_la_SOURCES = timer.c select.c signal.c msgb.c rxlev_stat.c \
 			 tlv_parser.c bitvec.c comp128.c gsm_utils.c statistics.c \
 			 write_queue.c utils.c rsl.c gsm48.c gsm48_ie.c \
 			 logging.c gsm0808.c rate_ctr.c gsmtap_util.c \
-			 gprs_cipher_core.c crc16.c
+			 gprs_cipher_core.c crc16.c panic.c
 
 if ENABLE_PLUGIN
 libosmocore_la_SOURCES += plugin.c
diff --git a/src/shared/libosmocore/src/gsm0808.c b/src/shared/libosmocore/src/gsm0808.c
index 1dc035b3..c8dc6645 100644
--- a/src/shared/libosmocore/src/gsm0808.c
+++ b/src/shared/libosmocore/src/gsm0808.c
@@ -27,10 +27,15 @@
 #define BSSMAP_MSG_SIZE 512
 #define BSSMAP_MSG_HEADROOM 128
 
-struct msgb *gsm0808_create_layer3(struct msgb *msg_l3, uint16_t nc, uint16_t cc, int lac, int _ci)
+static void put_data_16(uint8_t *data, const uint16_t val)
+{
+	memcpy(data, &val, sizeof(val));
+}
+
+struct msgb *gsm0808_create_layer3(struct msgb *msg_l3, uint16_t nc, uint16_t cc, int lac, uint16_t _ci)
 {
 	uint8_t *data;
-	uint16_t *ci;
+	uint8_t *ci;
 	struct msgb* msg;
 	struct gsm48_loc_area_id *lai;
 
@@ -56,8 +61,8 @@ struct msgb *gsm0808_create_layer3(struct msgb *msg_l3, uint16_t nc, uint16_t cc
 	lai = (struct gsm48_loc_area_id *) msgb_put(msg, sizeof(*lai));
 	gsm48_generate_lai(lai, cc, nc, lac);
 
-	ci = (uint16_t *) msgb_put(msg, 2);
-	*ci = htons(_ci);
+	ci = msgb_put(msg, 2);
+	put_data_16(ci, htons(_ci));
 
 	/* copy the layer3 data */
 	data = msgb_put(msg, msgb_l3len(msg_l3) + 2);
@@ -187,7 +192,7 @@ struct msgb *gsm0808_create_sapi_reject(uint8_t link_id)
 	return msg;
 }
 
-struct msgb *gsm0808_create_assignment_completed(struct gsm_lchan *lchan, uint8_t rr_cause,
+struct msgb *gsm0808_create_assignment_completed(uint8_t rr_cause,
 						 uint8_t chosen_channel, uint8_t encr_alg_id,
 						 uint8_t speech_mode)
 {
diff --git a/src/shared/libosmocore/src/gsm_utils.c b/src/shared/libosmocore/src/gsm_utils.c
index dc97ceff..4b4e2c60 100644
--- a/src/shared/libosmocore/src/gsm_utils.c
+++ b/src/shared/libosmocore/src/gsm_utils.c
@@ -2,6 +2,7 @@
  * (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
  * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
  * (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010 by Nico Golde <nico@ngolde.de>
  *
  * All Rights Reserved
  *
@@ -34,53 +35,140 @@
 
 #include "../config.h"
 
-/* GSM 03.38 6.2.1 Charachter packing */
+/* ETSI GSM 03.38 6.2.1 and 6.2.1.1 default alphabet
+ * Greek symbols at hex positions 0x10 and 0x12-0x1a
+ * left out as they can't be handled with a char and
+ * since most phones don't display or write these
+ * characters this would only needlessly make the code
+ * more complex
+*/
+static unsigned char gsm_7bit_alphabet[] = {
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0a, 0xff, 0xff, 0x0d, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0x20, 0x21, 0x22, 0x23, 0x02, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c,
+	0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+	0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
+	0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+	0x5a, 0x3c, 0x2f, 0x3e, 0x14, 0x11, 0xff, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
+	0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+	0x78, 0x79, 0x7a, 0x28, 0x40, 0x29, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0x0c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5e, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x40, 0xff, 0x01, 0xff,
+	0x03, 0xff, 0x7b, 0x7d, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5c, 0xff, 0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5b, 0x7e, 0x5d, 0xff, 0x7c, 0xff, 0xff, 0xff,
+	0xff, 0x5b, 0x0e, 0x1c, 0x09, 0xff, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x5d,
+	0xff, 0xff, 0xff, 0xff, 0x5c, 0xff, 0x0b, 0xff, 0xff, 0xff, 0x5e, 0xff, 0xff, 0x1e, 0x7f,
+	0xff, 0xff, 0xff, 0x7b, 0x0f, 0x1d, 0xff, 0x04, 0x05, 0xff, 0xff, 0x07, 0xff, 0xff, 0xff,
+	0xff, 0x7d, 0x08, 0xff, 0xff, 0xff, 0x7c, 0xff, 0x0c, 0x06, 0xff, 0xff, 0x7e, 0xff, 0xff
+};
+
+/* GSM 03.38 6.2.1 Character lookup for decoding */
+static int gsm_septet_lookup(uint8_t ch)
+{
+	int i = 0;
+	for(; i < sizeof(gsm_7bit_alphabet); i++){
+		if(gsm_7bit_alphabet[i] == ch)
+			return i;
+	}
+	return -1;
+}
+
+/* GSM 03.38 6.2.1 Character unpacking */
 int gsm_7bit_decode(char *text, const uint8_t *user_data, uint8_t length)
 {
 	int i = 0;
 	int l = 0;
+	int septet_l = (length * 8) / 7;
+	uint8_t *rtext = calloc(septet_l, sizeof(uint8_t));
+	uint8_t tmp;
 
-        /* FIXME: We need to account for user data headers here */
+	/* FIXME: We need to account for user data headers here */
 	i += l;
-	for (; i < length; i ++)
-		*(text ++) =
+	for (; i < septet_l; i++){
+		rtext[i] =
 			((user_data[(i * 7 + 7) >> 3] <<
 			  (7 - ((i * 7 + 7) & 7))) |
 			 (user_data[(i * 7) >> 3] >>
 			  ((i * 7) & 7))) & 0x7f;
+	}
+
+	for(i = 0; i < septet_l; i++){
+		/* this is an extension character */
+		if(rtext[i] == 0x1b && i + 1 < length){
+			tmp = rtext[i+1];
+			*(text++) = gsm_7bit_alphabet[0x7f + tmp];
+			i++;
+			continue;
+		}
+
+		*(text++) = gsm_septet_lookup(rtext[i]);
+	}
+
 	*text = '\0';
+	free(rtext);
 
-	return i - l;
+	return i;
 }
 
+/* GSM 03.38 6.2.1 Prepare character packing */
+static int gsm_septet_encode(uint8_t *result, const char *data)
+{
+	int i, y = 0;
+	uint8_t ch;
+	for(i = 0; i < strlen(data); i++){
+		ch = data[i];
+		switch(ch){
+		/* fall-through for extension characters */
+		case 0x0c:
+		case 0x5e:
+		case 0x7b:
+		case 0x7d:
+		case 0x5c:
+		case 0x5b:
+		case 0x7e:
+		case 0x5d:
+		case 0x7c:
+			result[y++] = 0x1b;
+		default:
+			result[y] = gsm_7bit_alphabet[ch];
+			break;
+		}
+		y++;
+	}
 
-/* GSM 03.38 6.2.1 Charachter packing */
+	return y;
+}
+
+/* GSM 03.38 6.2.1 Character packing */
 int gsm_7bit_encode(uint8_t *result, const char *data)
 {
-	int i,j = 0;
-	unsigned char ch1, ch2;
+	int i,y,z = 0;
+	/* prepare for the worst case, every character expanding to two bytes */
+	uint8_t *rdata = calloc(strlen(data) * 2, sizeof(uint8_t));
+	uint8_t cb, nb;
 	int shift = 0;
 
-	for ( i=0; i<strlen(data); i++ ) {
+	y = gsm_septet_encode(rdata, data);
 
-		ch1 = data[i] & 0x7F;
-		ch1 = ch1 >> shift;
-		ch2 = data[(i+1)] & 0x7F;
-		ch2 = ch2 << (7-shift);
+	for(i = 0; i < y; i++) {
+		if(shift == 7 && i + 1 < y){
+			shift = 0;
+			continue;
+		}
 
-		ch1 = ch1 | ch2;
+		cb = (rdata[i] & 0x7f) >> shift;
+		if(i + 1 < y){
+			nb = (rdata[i + 1] & 0x7f) << (7 - shift);
+			cb = cb | nb;
+		}
 
-		result[j++] = ch1;
+		result[z++] = cb;
 
 		shift++;
-
-		if ((shift == 7) && (i+1<strlen(data))) {
-			shift = 0;
-			i++;
-		}
 	}
 
-	return i;
+	free(rdata);
+	return z;
 }
 
 /* determine power control level for given dBm value, as indicated
diff --git a/src/shared/libosmocore/src/panic.c b/src/shared/libosmocore/src/panic.c
new file mode 100644
index 00000000..a25067de
--- /dev/null
+++ b/src/shared/libosmocore/src/panic.c
@@ -0,0 +1,71 @@
+/* Panic handling */
+/*
+ * (C) 2010 by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <osmocore/panic.h>
+
+#include "../config.h"
+
+
+static osmo_panic_handler_t osmo_panic_handler = (void*)0;
+
+
+#ifndef PANIC_INFLOOP
+
+#include <stdio.h>
+#include <stdlib.h>
+
+static void osmo_panic_default(const char *fmt, va_list args)
+{
+	vfprintf(stderr, fmt, args);
+	abort();
+}
+
+#else
+
+static void osmo_panic_default(const char *fmt, va_list args)
+{
+	while (1);
+}
+
+#endif
+
+
+void osmo_panic(const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+
+	if (osmo_panic_handler)
+		osmo_panic_handler(fmt, args);
+	else
+		osmo_panic_default(fmt, args);
+
+	va_end(args);
+}
+ 
+
+void osmo_set_panic_handler(osmo_panic_handler_t *h)
+{
+	osmo_panic_handler = h;
+}
+
diff --git a/src/shared/libosmocore/src/rsl.c b/src/shared/libosmocore/src/rsl.c
index 7bc1712f..10fba9b2 100644
--- a/src/shared/libosmocore/src/rsl.c
+++ b/src/shared/libosmocore/src/rsl.c
@@ -183,6 +183,32 @@ int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *tim
 	return 0;
 }
 
+const char *rsl_chan_nr_str(uint8_t chan_nr)
+{
+	static char str[20];
+	int ts = chan_nr & 7;
+	uint8_t cbits = chan_nr >> 3;
+
+	if (cbits == 0x01)
+		sprintf(str, "TCH/F on TS%d", ts);
+	else if ((cbits & 0x1e) == 0x02)
+		sprintf(str, "TCH/H(%u) on TS%d", cbits & 0x01, ts);
+	else if ((cbits & 0x1c) == 0x04)
+		sprintf(str, "SDCCH/4(%u) on TS%d", cbits & 0x03, ts);
+	else if ((cbits & 0x18) == 0x08)
+		sprintf(str, "SDCCH/8(%u) on TS%d", cbits & 0x07, ts);
+	else if (cbits == 0x10)
+		sprintf(str, "BCCH on TS%d", ts);
+	else if (cbits == 0x11)
+		sprintf(str, "RACH on TS%d", ts);
+	else if (cbits == 0x12)
+		sprintf(str, "PCH/AGCH on TS%d", ts);
+	else
+		sprintf(str, "UNKNOWN on TS%d", ts);
+
+        return str;
+}
+
 static const struct value_string rsl_err_vals[] = {
 	{ RSL_ERR_RADIO_IF_FAIL,	"Radio Interface Failure" },
 	{ RSL_ERR_RADIO_LINK_FAIL,	"Radio Link Failure" },