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Stack smashing bug fix

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This commit is contained in:
hooper114 2009-01-31 14:24:47 +00:00
parent f7060fc642
commit dd374c0db5
1 changed files with 7 additions and 4 deletions
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11
backend/dm200.c
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@ -628,6 +628,10 @@ int dm200encode(struct zint_symbol *symbol, unsigned char source[], unsigned cha
}
}
if(tp > 1558) {
return 0;
}
} /* while */
/* Empty buffers */
@ -750,7 +754,7 @@ int data_matrix_200(struct zint_symbol *symbol, unsigned char source[])
{
int inputlen, i;
inputlen = ustrlen(source);
unsigned char binary[inputlen * 2];
unsigned char binary[2000];
int binlen;
int symbolsize, optionsize, calcsize;
int taillength, error_number = 0;
@ -760,8 +764,8 @@ int data_matrix_200(struct zint_symbol *symbol, unsigned char source[])
binlen = dm200encode(symbol, source, binary, &last_mode);
if(binlen == 0) {
strcpy(symbol->errtxt, "Could not encode data (should never happen)");
return ERROR_ENCODING_PROBLEM;
strcpy(symbol->errtxt, "Data too long to fit in symbol");
return ERROR_TOO_LONG;
}
if((symbol->option_2 >= 1) && (symbol->option_2 <= 30)) {
@ -833,7 +837,6 @@ int data_matrix_200(struct zint_symbol *symbol, unsigned char source[])
}
//fprintf (stderr, "\n");
}
for(y = H - 1; y >= 0; y--) {
int x;
for(x = 0; x < W; x++) {