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DMR: Fix Potential Overflo/Underflow in UTF8 Text;

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lwvmobile
2025-02-23 23:52:28 -05:00
parent f0b5f2737f
commit f6aba4a5a4
1 changed files with 4 additions and 2 deletions
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6
src/dmr_pdu.c
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@@ -30,7 +30,6 @@ void utf16_to_text (uint16_t len, uint8_t * input)
void utf8_to_text (uint16_t len, uint8_t * input)
{
len -= 24;
fprintf (stderr, "\n UTF8 Text: ");
for (uint16_t i = 0; i < len; i++)
{
@@ -49,11 +48,14 @@ void dmr_sd_pdu (dsd_opts * opts, dsd_state * state, uint16_t len, uint8_t * DMR
if (DMR_PDU[0] == 0x01) //found some on another system that is 00 here, and not a Loction
{
utf8_to_text(len, DMR_PDU+23);
uint16_t offset = 0; //sanity check of sorts, prevent extra long line print outs in the console
if (len >= 22) offset = 22;
utf8_to_text(len-offset, DMR_PDU+offset+1);
dmr_locn(opts, state, len, DMR_PDU);
}
else
{
if (len >= (127*18)) len = 127*18; //sanity check of sorts, prevent extra long line print outs in the console
utf8_to_text(len, DMR_PDU); //generic catch-all to see if anything relevant is there
// utf16_to_text(len, DMR_PDU); //generic catch-all to see if anything relevant is there
}