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Buffer over-flow --

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This commit is contained in:
taipanromania 2008-10-03 08:05:56 +00:00
parent afd0ca7cfd
commit 414bc1c82b
1 changed files with 36 additions and 36 deletions
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72
backend/upcean.c
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@ -97,14 +97,14 @@ void upca(struct zint_symbol *symbol, unsigned char source[], char dest[])
source[length] = upc_check(source); source[length] = upc_check(source);
source[length + 1] = '\0'; source[length + 1] = '\0';
upca_draw(source, dest); upca_draw(source, dest);
strcpy(symbol->text, source); strcpy(symbol->text, (char*)source);
} }
void upce(struct zint_symbol *symbol, unsigned char source[], char dest[]) void upce(struct zint_symbol *symbol, unsigned char source[], char dest[])
{ /* UPC E is a zero-compressed version of UPC A */ { /* UPC E is a zero-compressed version of UPC A */
unsigned int i, num_system; unsigned int i, num_system;
char emode, equivalent[12], check_digit, parity[8], temp[8]; char emode, equivalent[12], check_digit, parity[8], temp[8];
char hrt[8]; char hrt[9];
/* Two number systems can be used - system 0 and system 1 */ /* Two number systems can be used - system 0 and system 1 */
if(ustrlen(source) == 7) { if(ustrlen(source) == 7) {
@ -113,8 +113,8 @@ void upce(struct zint_symbol *symbol, unsigned char source[], char dest[])
case '1': num_system = 1; break; case '1': num_system = 1; break;
default: num_system = 0; source[0] = '0'; break; default: num_system = 0; source[0] = '0'; break;
} }
strcpy(temp, source); strcpy(temp, (char*)source);
strcpy(hrt, source); strcpy(hrt, (char*)source);
for(i = 1; i <= 7; i++) { for(i = 1; i <= 7; i++) {
source[i - 1] = temp[i]; source[i - 1] = temp[i];
} }
@ -123,7 +123,7 @@ void upce(struct zint_symbol *symbol, unsigned char source[], char dest[])
num_system = 0; num_system = 0;
hrt[0] = '0'; hrt[0] = '0';
hrt[1] = '\0'; hrt[1] = '\0';
concat(hrt, source); concat(hrt, (char*)source);
} }
/* Expand the zero-compressed UPCE code to make a UPCA equivalent (EN Table 5) */ /* Expand the zero-compressed UPCE code to make a UPCA equivalent (EN Table 5) */
@ -181,7 +181,7 @@ void upce(struct zint_symbol *symbol, unsigned char source[], char dest[])
/* Get the check digit from the expanded UPCA code */ /* Get the check digit from the expanded UPCA code */
check_digit = upc_check(equivalent); check_digit = upc_check((unsigned char*)equivalent);
/* Use the number system and check digit information to choose a parity scheme */ /* Use the number system and check digit information to choose a parity scheme */
if(num_system == 1) { if(num_system == 1) {
@ -344,7 +344,7 @@ void ean13(struct zint_symbol *symbol, unsigned char source[], char dest[])
/* stop character */ /* stop character */
concat (dest, "111"); concat (dest, "111");
strcpy(symbol->text, source); strcpy(symbol->text, (char*)source);
} }
void ean8(struct zint_symbol *symbol, unsigned char source[], char dest[]) void ean8(struct zint_symbol *symbol, unsigned char source[], char dest[])
@ -356,7 +356,7 @@ void ean8(struct zint_symbol *symbol, unsigned char source[], char dest[])
source[length] = upc_check(source); source[length] = upc_check(source);
source[length + 1] = '\0'; source[length + 1] = '\0';
upca_draw(source, dest); upca_draw(source, dest);
strcpy(symbol->text, source); strcpy(symbol->text, (char*)source);
} }
char isbn13_check(unsigned char source[]) /* For ISBN(13) only */ char isbn13_check(unsigned char source[]) /* For ISBN(13) only */
@ -490,14 +490,14 @@ int isbn(struct zint_symbol *symbol, unsigned char source[], char dest[]) /* Mak
int eanx(struct zint_symbol *symbol, unsigned char source[]) int eanx(struct zint_symbol *symbol, unsigned char source[])
{ {
/* splits string to parts before and after '+' parts */ /* splits string to parts before and after '+' parts */
char first_part[20], second_part[20], dest[1000]; unsigned char first_part[20], second_part[20], dest[1000];
unsigned int latch, reader, writer, with_addon; unsigned int latch, reader, writer, with_addon;
strcpy(first_part, "");
strcpy(second_part, "");
int errno, i; int errno, i;
errno = 0; errno = 0;
strcpy(dest, ""); memset(dest,0,1000);
memset(first_part,0,20);
memset(second_part,0,20);
with_addon = FALSE; with_addon = FALSE;
latch = FALSE; latch = FALSE;
@ -542,24 +542,24 @@ int eanx(struct zint_symbol *symbol, unsigned char source[])
} }
} while (reader <= ustrlen(source)); } while (reader <= ustrlen(source));
} else { } else {
strcpy(first_part, source); strcpy((char*)first_part, (char*)source);
} }
switch(symbol->symbology) switch(symbol->symbology)
{ {
case BARCODE_EANX: case BARCODE_EANX:
switch(strlen(first_part)) switch(ustrlen(first_part))
{ {
case 2: add_on(first_part, dest, 0); strcpy(symbol->text, first_part); break; case 2: add_on(first_part, (char*)dest, 0); strcpy(symbol->text, (char*)first_part); break;
case 5: add_on(first_part, dest, 0); strcpy(symbol->text, first_part); break; case 5: add_on(first_part, (char*)dest, 0); strcpy(symbol->text, (char*)first_part); break;
case 7: ean8(symbol, first_part, dest); break; case 7: ean8(symbol, first_part, (char*)dest); break;
case 12: ean13(symbol, first_part, dest); break; case 12: ean13(symbol, first_part, (char*)dest); break;
default: strcpy(symbol->errtxt, "error: invalid length input"); return ERROR_TOO_LONG; break; default: strcpy(symbol->errtxt, "error: invalid length input"); return ERROR_TOO_LONG; break;
} }
break; break;
case BARCODE_EANX_CC: case BARCODE_EANX_CC:
switch(strlen(first_part)) switch(ustrlen(first_part))
{ /* Adds vertical separator bars according to ISO/IEC 24723 section 11.4 */ { /* Adds vertical separator bars according to ISO/IEC 24723 section 11.4 */
case 7: symbol->encoded_data[symbol->rows][1] = '1'; case 7: symbol->encoded_data[symbol->rows][1] = '1';
symbol->encoded_data[symbol->rows][67] = '1'; symbol->encoded_data[symbol->rows][67] = '1';
@ -571,7 +571,7 @@ int eanx(struct zint_symbol *symbol, unsigned char source[])
symbol->row_height[symbol->rows + 1] = 2; symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2; symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3; symbol->rows += 3;
ean8(symbol, first_part, dest); break; ean8(symbol, first_part, (char*)dest); break;
case 12:symbol->encoded_data[symbol->rows][1] = '1'; case 12:symbol->encoded_data[symbol->rows][1] = '1';
symbol->encoded_data[symbol->rows][95] = '1'; symbol->encoded_data[symbol->rows][95] = '1';
symbol->encoded_data[symbol->rows + 1][0] = '1'; symbol->encoded_data[symbol->rows + 1][0] = '1';
@ -582,20 +582,20 @@ int eanx(struct zint_symbol *symbol, unsigned char source[])
symbol->row_height[symbol->rows + 1] = 2; symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2; symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3; symbol->rows += 3;
ean13(symbol, first_part, dest); break; ean13(symbol, first_part, (char*)dest); break;
default: strcpy(symbol->errtxt, "error: invalid length EAN input"); return ERROR_TOO_LONG; break; default: strcpy(symbol->errtxt, "error: invalid length EAN input"); return ERROR_TOO_LONG; break;
} }
break; break;
case BARCODE_UPCA: case BARCODE_UPCA:
if(strlen(first_part) == 11) { if(ustrlen(first_part) == 11) {
upca(symbol, first_part, dest); upca(symbol, first_part, (char*)dest);
} else { } else {
strcpy(symbol->errtxt, "error: input wrong length"); strcpy(symbol->errtxt, "error: input wrong length");
return ERROR_TOO_LONG; return ERROR_TOO_LONG;
} }
break; break;
case BARCODE_UPCA_CC: case BARCODE_UPCA_CC:
if(strlen(first_part) == 11) { if(ustrlen(first_part) == 11) {
symbol->encoded_data[symbol->rows][1] = '1'; symbol->encoded_data[symbol->rows][1] = '1';
symbol->encoded_data[symbol->rows][95] = '1'; symbol->encoded_data[symbol->rows][95] = '1';
symbol->encoded_data[symbol->rows + 1][0] = '1'; symbol->encoded_data[symbol->rows + 1][0] = '1';
@ -606,22 +606,22 @@ int eanx(struct zint_symbol *symbol, unsigned char source[])
symbol->row_height[symbol->rows + 1] = 2; symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2; symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3; symbol->rows += 3;
upca(symbol, first_part, dest); upca(symbol, first_part, (char*)dest);
} else { } else {
strcpy(symbol->errtxt, "error: UPCA input wrong length"); strcpy(symbol->errtxt, "error: UPCA input wrong length");
return ERROR_TOO_LONG; return ERROR_TOO_LONG;
} }
break; break;
case BARCODE_UPCE: case BARCODE_UPCE:
if((strlen(first_part) >= 6) && (strlen(first_part) <= 7)) { if((ustrlen(first_part) >= 6) && (ustrlen(first_part) <= 7)) {
upce(symbol, first_part, dest); upce(symbol, first_part, (char*)dest);
} else { } else {
strcpy(symbol->errtxt, "error: input wrong length"); strcpy(symbol->errtxt, "error: input wrong length");
return ERROR_TOO_LONG; return ERROR_TOO_LONG;
} }
break; break;
case BARCODE_UPCE_CC: case BARCODE_UPCE_CC:
if((strlen(first_part) >= 6) && (strlen(first_part) <= 7)) { if((ustrlen(first_part) >= 6) && (ustrlen(first_part) <= 7)) {
symbol->encoded_data[symbol->rows][1] = '1'; symbol->encoded_data[symbol->rows][1] = '1';
symbol->encoded_data[symbol->rows][51] = '1'; symbol->encoded_data[symbol->rows][51] = '1';
symbol->encoded_data[symbol->rows + 1][0] = '1'; symbol->encoded_data[symbol->rows + 1][0] = '1';
@ -632,31 +632,31 @@ int eanx(struct zint_symbol *symbol, unsigned char source[])
symbol->row_height[symbol->rows + 1] = 2; symbol->row_height[symbol->rows + 1] = 2;
symbol->row_height[symbol->rows + 2] = 2; symbol->row_height[symbol->rows + 2] = 2;
symbol->rows += 3; symbol->rows += 3;
upce(symbol, first_part, dest); upce(symbol, first_part, (char*)dest);
} else { } else {
strcpy(symbol->errtxt, "error: UPCE input wrong length"); strcpy(symbol->errtxt, "error: UPCE input wrong length");
return ERROR_TOO_LONG; return ERROR_TOO_LONG;
} }
break; break;
case BARCODE_ISBNX: case BARCODE_ISBNX:
errno = isbn(symbol, first_part, dest); errno = isbn(symbol, first_part, (char*)dest);
if(errno > 4) { if(errno > 4) {
return errno; return errno;
} }
break; break;
} }
switch(strlen(second_part)) switch(ustrlen(second_part))
{ {
case 0: break; case 0: break;
case 2: case 2:
add_on(second_part, dest, 1); add_on(second_part, (char*)dest, 1);
concat(symbol->text, "+"); concat(symbol->text, "+");
concat(symbol->text, second_part); concat(symbol->text, (char*)second_part);
break; break;
case 5: case 5:
add_on(second_part, dest, 1); add_on(second_part, (char*)dest, 1);
concat(symbol->text, "+"); concat(symbol->text, "+");
concat(symbol->text, second_part); concat(symbol->text, (char*)second_part);
break; break;
default: default:
strcpy(symbol->errtxt, "error: invalid length input"); strcpy(symbol->errtxt, "error: invalid length input");
@ -664,7 +664,7 @@ int eanx(struct zint_symbol *symbol, unsigned char source[])
break; break;
} }
expand(symbol, dest); expand(symbol, (char*)dest);
switch(symbol->symbology) { switch(symbol->symbology) {
case BARCODE_EANX_CC: case BARCODE_EANX_CC: