*/
#include <stdio.h>
+#include <limits.h>
#include "cryptlib.h"
#include <openssl/evp.h>
const unsigned char *in, int inl)
{
int i, j;
- unsigned int total = 0;
+ size_t total = 0;
*outl = 0;
if (inl <= 0)
return;
OPENSSL_assert(ctx->length <= (int)sizeof(ctx->enc_data));
- if ((ctx->num + inl) < ctx->length) {
+ if (ctx->length - ctx->num > inl) {
memcpy(&(ctx->enc_data[ctx->num]), in, inl);
ctx->num += inl;
return;
*out = '\0';
total = j + 1;
}
- while (inl >= ctx->length) {
+ while (inl >= ctx->length && total <= INT_MAX) {
j = EVP_EncodeBlock(out, in, ctx->length);
in += ctx->length;
inl -= ctx->length;
*out = '\0';
total += j + 1;
}
+ if (total > INT_MAX) {
+ /* Too much output data! */
+ *outl = 0;
+ return;
+ }
if (inl != 0)
memcpy(&(ctx->enc_data[0]), in, inl);
ctx->num = inl;
tail:
if (n > 0) {
if ((n & 3) == 0) {
- decoded_len = EVP_DecodeBlock(out, d, n);
- n = 0;
- if (decoded_len < 0 || eof > decoded_len) {
- rv = -1;
- goto end;
- }
- ret += (decoded_len - eof);
+ decoded_len = EVP_DecodeBlock(out, d, n);
+ n = 0;
+ if (decoded_len < 0 || eof > decoded_len) {
+ rv = -1;
+ goto end;
+ }
+ ret += (decoded_len - eof);
} else if (seof) {
/* EOF in the middle of a base64 block. */
rv = -1;