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EANX_CC/UPCA_CC: fix crash in dbar_date() on not checking length

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in `cc_binary_string()`, ticket #300 (#5 & #6), props Andre Maute;
  add other checks for length on processing encoding mode
PDF417: fix out-of-bounds crash on overrunning string and codeword
  buffers by tripling size (convert to `short` instead of `int` to
  guard against too much stack), ticket #300 (#7 & #10), props Andre
  Maute; (TODO: add some checks instead to bail out earlier?)
CODEONE: fix looping on latch crash in `c1_encode()`, ticket #300 (#8),
  props Andre Maute
CODABLOCKF: fix crash on negative overflow of `columns` (`option_2`),
  ticket #300 (#9), props Andre Maute
library: add `debug_print_escape()` helper for ZINT_DEBUG_PRINT
This commit is contained in:
gitlost 2023-11-27 12:55:53 +00:00
parent 77c1ef1139
commit a14fe77aa0
17 changed files with 561 additions and 193 deletions
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13
backend/code1.c
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@ -37,6 +37,13 @@
#include "reedsol.h"
#include "large.h"
#define C1_ASCII 1
#define C1_C40 2
#define C1_DECIMAL 3
#define C1_TEXT 4
#define C1_EDI 5
#define C1_BYTE 6
/* Add solid bar */
static void c1_horiz(struct zint_symbol *symbol, const int row_no, const int full) {
int i;
@ -477,7 +484,7 @@ static void c1_eci_escape(const int eci, unsigned char source[], const int lengt
/* Convert to codewords */
static int c1_encode(struct zint_symbol *symbol, unsigned char source[], int length, const int eci,
const int seg_count, const int gs1, unsigned int target[], int *p_tp, int *p_last_mode) {
int current_mode, next_mode;
int current_mode, next_mode, last_mode;
int sp = 0;
int tp = *p_tp;
int i;
@ -563,6 +570,7 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], int len
}
do {
last_mode = current_mode;
if (current_mode != next_mode) {
/* Change mode */
switch (next_mode) {
@ -625,6 +633,9 @@ static int c1_encode(struct zint_symbol *symbol, unsigned char source[], int len
/* Step B6 */
next_mode = c1_look_ahead_test(source, length, sp, current_mode, gs1);
if (next_mode == last_mode) { /* Avoid looping on latch (ticket #300 (#8) Andre Maute) */
next_mode = C1_ASCII;
}
if (next_mode == C1_ASCII) {
if (debug_print) printf("ASC(%d) ", source[sp]);