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Segmentation fault for little or no data

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This commit is contained in:
hooper114 2008-10-09 11:29:09 +00:00
parent fd45a1d277
commit 437cfb823d
3 changed files with 52 additions and 13 deletions
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16
backend/library.c
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@ -137,8 +137,13 @@ int ZBarcode_Encode(struct zint_symbol *symbol, unsigned char *input)
int error_number, error_buffer;
error_number = 0;
/* First check the symbology field */
if(ustrlen(input) == 0) {
strcpy(symbol->errtxt, "No input data [Z00]");
error_tag(symbol->errtxt, ERROR_INVALID_DATA);
return ERROR_INVALID_DATA;
}
/* First check the symbology field */
if(symbol->symbology < 1) { strcpy(symbol->errtxt, "Symbology out of range, using Code 128 [Z01]"); symbol->symbology = BARCODE_CODE128; error_number = WARN_INVALID_OPTION; }
/* symbol->symbologys 1 to 86 are defined by tbarcode */
@ -172,7 +177,7 @@ int ZBarcode_Encode(struct zint_symbol *symbol, unsigned char *input)
if((symbol->symbology >= 94) && (symbol->symbology <= 128)) { strcpy(symbol->errtxt, "Symbology out of range, using Code 128 [Z10]"); symbol->symbology = BARCODE_CODE128; error_number = WARN_INVALID_OPTION; }
/* Everything from 100 up is Zint-specific */
if(symbol->symbology >= 140) { strcpy(symbol->errtxt, "Symbology out of range, using Code 128 [Z11]"); symbol->symbology = BARCODE_CODE128; error_number = WARN_INVALID_OPTION; }
if(error_number > 4) {
error_tag(symbol->errtxt, error_number);
return error_number;
@ -191,7 +196,7 @@ int ZBarcode_Encode(struct zint_symbol *symbol, unsigned char *input)
symbol->border_width = 8;
symbol->output_options = BARCODE_BOX;
}
switch(symbol->symbology) {
case BARCODE_C25MATRIX: error_number = matrix_two_of_five(symbol, input); break;
case BARCODE_C25IND: error_number = industrial_two_of_five(symbol, input); break;
@ -262,11 +267,9 @@ int ZBarcode_Encode(struct zint_symbol *symbol, unsigned char *input)
case BARCODE_DAFT: error_number = daft_code(symbol, input); break;
case BARCODE_EAN14: error_number = ean_14(symbol, input); break;
}
if(error_number == 0) {
error_number = error_buffer;
}
error_tag(symbol->errtxt, error_number);
return error_number;
}
@ -275,7 +278,7 @@ int ZBarcode_Print(struct zint_symbol *symbol)
{
int error_number;
char output[4];
if(strlen(symbol->outfile) > 3) {
output[0] = symbol->outfile[strlen(symbol->outfile) - 3];
output[1] = symbol->outfile[strlen(symbol->outfile) - 2];
@ -318,6 +321,7 @@ int ZBarcode_Print_Rotated(struct zint_symbol *symbol, int rotate_angle)
output[2] = symbol->outfile[strlen(symbol->outfile) - 1];
output[3] = '\0';
to_upper((unsigned char*)output);
#ifndef NO_PNG
if(!(strcmp(output, "PNG"))) {
error_number = png_handle(symbol, rotate_angle);