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smsutil: add sms_decode_unpacked_stk_pdu function 

Properly check the special 'packing required' sms pdus sent by SIM
toolkit.
This commit is contained in:
Denis Kenzior 2010-05-27 09:25:48 -05:00
parent 4d69a5cd86
commit 9bb7bcd450
2 changed files with 55 additions and 0 deletions
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52
src/smsutil.c
View File

@ -1219,6 +1219,58 @@ static gboolean encode_submit(const struct sms_submit *in,
return TRUE;
}
gboolean sms_decode_unpacked_stk_pdu(const unsigned char *pdu, int len,
struct sms *out)
{
unsigned char octet;
int offset = 0;
if (!next_octet(pdu, len, &offset, &octet))
return FALSE;
if ((octet & 0x3) != 1)
return FALSE;
out->type = SMS_TYPE_SUBMIT;
out->submit.rd = is_bit_set(octet, 2);
out->submit.vpf = bit_field(octet, 3, 2);
out->submit.rp = is_bit_set(octet, 7);
out->submit.udhi = is_bit_set(octet, 6);
out->submit.srr = is_bit_set(octet, 5);
if (!next_octet(pdu, len, &offset, &out->submit.mr))
return FALSE;
if (!sms_decode_address_field(pdu, len, &offset,
FALSE, &out->submit.daddr))
return FALSE;
if (!next_octet(pdu, len, &offset, &out->submit.pid))
return FALSE;
if (!next_octet(pdu, len, &offset, &out->submit.dcs))
return FALSE;
/* Now we override the DCS */
out->submit.dcs = 0xF0;
if (!decode_validity_period(pdu, len, &offset, out->submit.vpf,
&out->submit.vp))
return FALSE;
if (!next_octet(pdu, len, &offset, &out->submit.udl))
return FALSE;
if ((len - offset) < out->submit.udl)
return FALSE;
pack_7bit_own_buf(pdu + offset, out->submit.udl, 0, FALSE,
NULL, 0, out->submit.ud);
return TRUE;
}
static gboolean decode_submit(const unsigned char *pdu, int len,
struct sms *out)
{

3
src/smsutil.h
View File

@ -412,6 +412,9 @@ void encode_bcd_number(const char *number, unsigned char *out);
gboolean sms_decode(const unsigned char *pdu, int len, gboolean outgoing,
int tpdu_len, struct sms *out);
gboolean sms_decode_unpacked_stk_pdu(const unsigned char *pdu, int len,
struct sms *out);
gboolean sms_encode(const struct sms *in, int *len, int *tpdu_len,
unsigned char *pdu);