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callerid: do not use recursive call to reset 

Testing by Mike Tedesco shows the recursive databits_decode_callerid()
seems to break on OS X (only); I don't see why it should.  Avoid the
issue by not making a recursive call.
This commit is contained in:
Kamal Mostafa 2012-10-16 18:02:21 -07:00
parent 93bf08f750
commit 7fed380d0a
1 changed files with 13 additions and 9 deletions
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22
src/databits_callerid.c
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@ -60,13 +60,13 @@ decode_mdmf_callerid( char *dataout_p, unsigned int dataout_size )
unsigned int cid_datatype = *m++;
if ( cid_datatype >= CID_DATA_NAME_NA ) {
// FIXME: bad datastream -- print something here
return databits_decode_callerid(0, 0, 0, 0); // reset
return 0;
}
unsigned int cid_datalen = *m++;
if ( m + 2 + cid_datalen >= cid_buf + sizeof(cid_buf) ) {
// FIXME: bad datastream -- print something here
return databits_decode_callerid(0, 0, 0, 0); // reset
return 0;
}
// dataout_n += sprintf(dataout_p+dataout_n, "CID: %d (%d)\n", cid_datatype, cid_datalen);
@ -119,6 +119,13 @@ decode_sdmf_callerid( char *dataout_p, unsigned int dataout_size )
return dataout_n;
}
static unsigned int
decode_cid_reset()
{
cid_msgtype = 0;
cid_ndata = 0;
return 0;
}
// FIXME: doesn't respect dataout_size at all!
/* returns nbytes decoded */
@ -126,11 +133,8 @@ unsigned int
databits_decode_callerid( char *dataout_p, unsigned int dataout_size,
unsigned int bits, unsigned int n_databits )
{
if ( ! dataout_p ) { // databits processor reset
cid_msgtype = 0;
cid_ndata = 0;
return 0;
}
if ( ! dataout_p ) // databits processor reset
return decode_cid_reset();
if ( cid_msgtype == 0 ) {
if ( bits == CID_MSG_MDMF )
@ -145,7 +149,7 @@ databits_decode_callerid( char *dataout_p, unsigned int dataout_size,
if ( cid_ndata >= sizeof(cid_buf) ) {
// FIXME? buffer overflow; do what here?
return databits_decode_callerid(0, 0, 0, 0); // reset
return decode_cid_reset();
}
cid_buf[cid_ndata++] = bits;
@ -173,7 +177,7 @@ databits_decode_callerid( char *dataout_p, unsigned int dataout_size,
dataout_size-dataout_n);
// All done; reset for the next one
databits_decode_callerid(0, 0, 0, 0);
decode_cid_reset();
return dataout_n;
}