- const char *e_ptr;
- char *d_ptr;
-
- *decoded_len = 0;
- *decoded = ecalloc(1, encoded_len);
- d_ptr = *decoded;
- e_ptr = encoded;
-
- while (((e_ptr - encoded) - encoded_len) > 0) {
- int no_crlf = 0;
- char *n_ptr;
- size_t chunk_len = 0;
-
- chunk_len = strtol(e_ptr, &n_ptr, 16);
-
- /* check if:
- * - we could not read in chunk size
- * - chunk size is not followed by HTTP_CRLF|NUL
- */
- if ((n_ptr == e_ptr) || (*n_ptr && (no_crlf = strncmp(n_ptr, HTTP_CRLF, lenof(HTTP_CRLF))))) {
- /* don't fail on apperently not encoded data */
- if (e_ptr == encoded) {
- memcpy(*decoded, encoded, encoded_len);
- *decoded_len = encoded_len;
- return encoded + encoded_len;
- } else {
- efree(*decoded);
- if (no_crlf) {
- http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid character (expected 0x0D 0x0A; got: 0x%x 0x%x)", *n_ptr, *(n_ptr + 1));
- } else {
- char *error = estrndup(n_ptr, strcspn(n_ptr, "\r\n \0"));
- http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid chunk size: '%s' at pos %d", error, n_ptr - encoded);
- efree(error);
- }