[utils] Commit not working 7bit encoder...
No one is using it so far, so no one gets hurt...
diff --git a/src/gsm_utils.c b/src/gsm_utils.c
index 48d250e..f61b6f2 100644
--- a/src/gsm_utils.c
+++ b/src/gsm_utils.c
@@ -22,7 +22,9 @@
#include <openbsc/gsm_utils.h>
#include <malloc.h>
+#include <string.h>
+/* GSM 03.38 6.2.1 Charachter packing */
char *gsm_7bit_decode(u_int8_t *user_data, u_int8_t length)
{
u_int8_t d_off = 0, b_off = 0;
@@ -40,3 +42,30 @@
text[i] = '\0';
return text;
}
+
+/* GSM 03.38 6.2.1 Charachter packing */
+u_int8_t *gsm_7bit_encode(char *data)
+{
+ int i;
+ u_int8_t d_off = 0, b_off = 0;
+ const int length = strlen(data);
+ char *result = malloc(length + 1);
+ memset(result, 0, length + 1);
+
+ for (i = 0; i < length; ++i) {
+ u_int8_t first = (data[i] & 0x7f) << b_off;
+ u_int8_t second = (data[i] & 0x7f) >> (7 - b_off);
+
+ result[d_off] |= first;
+ result[d_off + 1] = second;
+
+ b_off += 7;
+
+ if (b_off >= 8) {
+ d_off += 1;
+ b_off -= 8;
+ }
+ }
+
+ return result;
+}