+ /* there should be CRLF after the chunk size, but we'll ignore SP+ too */
+ if (*n_ptr && !eol_match(&n_ptr, &eol_len)) {
+ if (eol_len == 2) {
+ http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Expected CRLF at pos %tu of %zu but got 0x%02X 0x%02X", n_ptr - encoded, encoded_len, *n_ptr, *(n_ptr + 1));
+ } else {
+ http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Expected LF at pos %tu of %zu but got 0x%02X", n_ptr - encoded, encoded_len, *n_ptr);
+ }
+ }
+ n_ptr += eol_len;
+
+ /* chunk size pretends more data than we actually got, so it's probably a truncated message */
+ if (chunk_len > (rest = encoded + encoded_len - n_ptr)) {
+ http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Truncated message: chunk size %lu exceeds remaining data size %lu at pos %tu of %zu", chunk_len, rest, n_ptr - encoded, encoded_len);
+ chunk_len = rest;
+ }
+
+ /* copy the chunk */
+ memcpy(*decoded + *decoded_len, n_ptr, chunk_len);
+ *decoded_len += chunk_len;
+
+ if (chunk_len == rest) {
+ e_ptr = n_ptr + chunk_len;
+ break;
+ } else {
+ /* advance to next chunk */
+ e_ptr = n_ptr + chunk_len + eol_len;
+ }
+ }
+
+ return e_ptr;
+}
+/* }}} */
+
+#ifdef HTTP_HAVE_ZLIB
+
+#define HTTP_DEFLATE_LEVEL_SET(flags, level) \
+ switch (flags & 0xf) \
+ { \
+ default: \
+ if ((flags & 0xf) < 10) { \
+ level = flags & 0xf; \
+ break; \
+ } \
+ case HTTP_DEFLATE_LEVEL_DEF: \
+ level = Z_DEFAULT_COMPRESSION; \
+ break; \
+ }
+
+#define HTTP_DEFLATE_WBITS_SET(flags, wbits) \
+ switch (flags & 0xf0) \
+ { \
+ case HTTP_DEFLATE_TYPE_GZIP: \
+ wbits = HTTP_WINDOW_BITS_GZIP; \
+ break; \
+ case HTTP_DEFLATE_TYPE_RAW: \
+ wbits = HTTP_WINDOW_BITS_RAW; \
+ break; \
+ default: \
+ wbits = HTTP_WINDOW_BITS_ZLIB; \
+ break; \
+ }
+
+#define HTTP_INFLATE_WBITS_SET(flags, wbits) \
+ if (flags & HTTP_INFLATE_TYPE_RAW) { \
+ wbits = HTTP_WINDOW_BITS_RAW; \
+ } else { \
+ wbits = HTTP_WINDOW_BITS_ANY; \
+ }
+
+#define HTTP_DEFLATE_STRATEGY_SET(flags, strategy) \
+ switch (flags & 0xf00) \
+ { \
+ case HTTP_DEFLATE_STRATEGY_FILT: \
+ strategy = Z_FILTERED; \
+ break; \
+ case HTTP_DEFLATE_STRATEGY_HUFF: \
+ strategy = Z_HUFFMAN_ONLY; \
+ break; \
+ case HTTP_DEFLATE_STRATEGY_RLE: \
+ strategy = Z_RLE; \
+ break; \
+ case HTTP_DEFLATE_STRATEGY_FIXED: \
+ strategy = Z_FIXED; \
+ break; \
+ default: \
+ strategy = Z_DEFAULT_STRATEGY; \
+ break; \
+ }
+
+#define HTTP_WINDOW_BITS_ZLIB 0x0000000f
+#define HTTP_WINDOW_BITS_GZIP 0x0000001f
+#define HTTP_WINDOW_BITS_ANY 0x0000002f
+#define HTTP_WINDOW_BITS_RAW -0x000000f
+
+STATUS _http_encoding_deflate(int flags, const char *data, size_t data_len, char **encoded, size_t *encoded_len TSRMLS_DC)