add brotli encoding
[m6w6/ext-http] / src / php_http_encoding_zlib.c
diff --git a/src/php_http_encoding_zlib.c b/src/php_http_encoding_zlib.c
new file mode 100644 (file)
index 0000000..5e19cec
--- /dev/null
@@ -0,0 +1,650 @@
+/*
+    +--------------------------------------------------------------------+
+    | PECL :: http                                                       |
+    +--------------------------------------------------------------------+
+    | Redistribution and use in source and binary forms, with or without |
+    | modification, are permitted provided that the conditions mentioned |
+    | in the accompanying LICENSE file are met.                          |
+    +--------------------------------------------------------------------+
+    | Copyright (c) 2004-2014, Michael Wallner <mike@php.net>            |
+    +--------------------------------------------------------------------+
+*/
+
+#include "php_http_api.h"
+
+#define PHP_HTTP_INFLATE_ROUNDS                                100
+#define PHP_HTTP_INFLATE_BUFFER_SIZE           0x1000
+
+#define PHP_HTTP_DEFLATE_BUFFER_SIZE           0x8000
+
+#define PHP_HTTP_DEFLATE_BUFFER_SIZE_GUESS(S) \
+       (((size_t) ((double) S * (double) 1.015)) + 10 + 8 + 4 + 1)
+
+#define PHP_HTTP_INFLATE_BUFFER_SIZE_GUESS(S) \
+       (((S) + 1) << 3)
+#define PHP_HTTP_INFLATE_BUFFER_SIZE_ALIGN(S) \
+       ((S) += (S) >> (3))
+
+#define PHP_HTTP_INFLATE_FLUSH_FLAG(flags) \
+       PHP_HTTP_ENCODING_STREAM_FLUSH_FLAG((flags), Z_FULL_FLUSH, Z_SYNC_FLUSH, Z_NO_FLUSH)
+#define PHP_HTTP_DEFLATE_FLUSH_FLAG(flags) \
+       PHP_HTTP_ENCODING_STREAM_FLUSH_FLAG((flags), Z_FULL_FLUSH, Z_SYNC_FLUSH, Z_NO_FLUSH)
+
+#define PHP_HTTP_WINDOW_BITS_ZLIB                      0x0000000f
+#define PHP_HTTP_WINDOW_BITS_GZIP                      0x0000001f
+#define PHP_HTTP_WINDOW_BITS_ANY                       0x0000002f
+#define PHP_HTTP_WINDOW_BITS_RAW                       -0x000000f
+
+#define PHP_HTTP_DEFLATE_LEVEL_SET(flags, level) \
+       switch (flags & 0xf) \
+       { \
+               default: \
+                       if ((flags & 0xf) < 10) { \
+                               level = flags & 0xf; \
+                               break; \
+                       } \
+               case PHP_HTTP_DEFLATE_LEVEL_DEF: \
+                       level = Z_DEFAULT_COMPRESSION; \
+               break; \
+       }
+
+#define PHP_HTTP_DEFLATE_WBITS_SET(flags, wbits) \
+       switch (flags & 0xf0) \
+       { \
+               case PHP_HTTP_DEFLATE_TYPE_GZIP: \
+                       wbits = PHP_HTTP_WINDOW_BITS_GZIP; \
+               break; \
+               case PHP_HTTP_DEFLATE_TYPE_RAW: \
+                       wbits = PHP_HTTP_WINDOW_BITS_RAW; \
+               break; \
+               default: \
+                       wbits = PHP_HTTP_WINDOW_BITS_ZLIB; \
+               break; \
+       }
+
+#define PHP_HTTP_INFLATE_WBITS_SET(flags, wbits) \
+       if (flags & PHP_HTTP_INFLATE_TYPE_RAW) { \
+               wbits = PHP_HTTP_WINDOW_BITS_RAW; \
+       } else { \
+                       wbits = PHP_HTTP_WINDOW_BITS_ANY; \
+       }
+
+#define PHP_HTTP_DEFLATE_STRATEGY_SET(flags, strategy) \
+       switch (flags & 0xf00) \
+       { \
+               case PHP_HTTP_DEFLATE_STRATEGY_FILT: \
+                       strategy = Z_FILTERED; \
+               break; \
+               case PHP_HTTP_DEFLATE_STRATEGY_HUFF: \
+                       strategy = Z_HUFFMAN_ONLY; \
+               break; \
+               case PHP_HTTP_DEFLATE_STRATEGY_RLE: \
+                       strategy = Z_RLE; \
+               break; \
+               case PHP_HTTP_DEFLATE_STRATEGY_FIXED: \
+                       strategy = Z_FIXED; \
+               break; \
+               default: \
+                       strategy = Z_DEFAULT_STRATEGY; \
+               break; \
+       }
+
+ZEND_RESULT_CODE php_http_encoding_deflate(int flags, const char *data, size_t data_len, char **encoded, size_t *encoded_len)
+{
+       int status, level, wbits, strategy;
+       z_stream Z;
+
+       PHP_HTTP_DEFLATE_LEVEL_SET(flags, level);
+       PHP_HTTP_DEFLATE_WBITS_SET(flags, wbits);
+       PHP_HTTP_DEFLATE_STRATEGY_SET(flags, strategy);
+
+       memset(&Z, 0, sizeof(z_stream));
+       *encoded = NULL;
+       *encoded_len = 0;
+
+       status = deflateInit2(&Z, level, Z_DEFLATED, wbits, MAX_MEM_LEVEL, strategy);
+       if (EXPECTED(Z_OK == status)) {
+               *encoded_len = PHP_HTTP_DEFLATE_BUFFER_SIZE_GUESS(data_len);
+               *encoded = emalloc(*encoded_len);
+
+               Z.next_in = (Bytef *) data;
+               Z.next_out = (Bytef *) *encoded;
+               Z.avail_in = data_len;
+               Z.avail_out = *encoded_len;
+
+               status = deflate(&Z, Z_FINISH);
+               deflateEnd(&Z);
+
+               if (EXPECTED(Z_STREAM_END == status)) {
+                       /* size buffer down to actual length */
+                       *encoded = erealloc(*encoded, Z.total_out + 1);
+                       (*encoded)[*encoded_len = Z.total_out] = '\0';
+                       return SUCCESS;
+               } else {
+                       PTR_SET(*encoded, NULL);
+                       *encoded_len = 0;
+               }
+       }
+
+       php_error_docref(NULL, E_WARNING, "Could not deflate data: %s", zError(status));
+       return FAILURE;
+}
+
+static php_http_encoding_stream_t *deflate_init(php_http_encoding_stream_t *s)
+{
+       int status, level, wbits, strategy, p = (s->flags & PHP_HTTP_ENCODING_STREAM_PERSISTENT);
+       z_streamp ctx = pecalloc(1, sizeof(z_stream), p);
+
+       PHP_HTTP_DEFLATE_LEVEL_SET(s->flags, level);
+       PHP_HTTP_DEFLATE_WBITS_SET(s->flags, wbits);
+       PHP_HTTP_DEFLATE_STRATEGY_SET(s->flags, strategy);
+
+       if (EXPECTED(Z_OK == (status = deflateInit2(ctx, level, Z_DEFLATED, wbits, MAX_MEM_LEVEL, strategy)))) {
+               if (EXPECTED(ctx->opaque = php_http_buffer_init_ex(NULL, PHP_HTTP_DEFLATE_BUFFER_SIZE, p ? PHP_HTTP_BUFFER_INIT_PERSISTENT : 0))) {
+                       s->ctx = ctx;
+                       return s;
+               }
+               deflateEnd(ctx);
+               status = Z_MEM_ERROR;
+       }
+       pefree(ctx, p);
+       php_error_docref(NULL, E_WARNING, "Failed to initialize deflate encoding stream: %s", zError(status));
+       return NULL;
+}
+
+static php_http_encoding_stream_t *deflate_copy(php_http_encoding_stream_t *from, php_http_encoding_stream_t *to)
+{
+       int status, p = to->flags & PHP_HTTP_ENCODING_STREAM_PERSISTENT;
+       z_streamp from_ctx = from->ctx, to_ctx = pecalloc(1, sizeof(*to_ctx), p);
+
+       if (Z_OK == (status = deflateCopy(to_ctx, from_ctx))) {
+               if ((to_ctx->opaque = php_http_buffer_init_ex(NULL, PHP_HTTP_DEFLATE_BUFFER_SIZE, p ? PHP_HTTP_BUFFER_INIT_PERSISTENT : 0))) {
+                       php_http_buffer_append(to_ctx->opaque, PHP_HTTP_BUFFER(from_ctx->opaque)->data, PHP_HTTP_BUFFER(from_ctx->opaque)->used);
+                       to->ctx = to_ctx;
+                       return to;
+               }
+               deflateEnd(to_ctx);
+               status = Z_MEM_ERROR;
+       }
+       php_error_docref(NULL, E_WARNING, "Failed to copy deflate encoding stream: %s", zError(status));
+       return NULL;
+}
+
+static ZEND_RESULT_CODE deflate_update(php_http_encoding_stream_t *s, const char *data, size_t data_len, char **encoded, size_t *encoded_len)
+{
+       int status;
+       z_streamp ctx = s->ctx;
+
+       /* append input to our buffer */
+       php_http_buffer_append(PHP_HTTP_BUFFER(ctx->opaque), data, data_len);
+
+       ctx->next_in = (Bytef *) PHP_HTTP_BUFFER(ctx->opaque)->data;
+       ctx->avail_in = PHP_HTTP_BUFFER(ctx->opaque)->used;
+
+       /* deflate */
+       *encoded_len = PHP_HTTP_DEFLATE_BUFFER_SIZE_GUESS(data_len);
+       *encoded = emalloc(*encoded_len);
+       ctx->avail_out = *encoded_len;
+       ctx->next_out = (Bytef *) *encoded;
+
+       switch (status = deflate(ctx, PHP_HTTP_DEFLATE_FLUSH_FLAG(s->flags))) {
+               case Z_OK:
+               case Z_STREAM_END:
+                       /* cut processed chunk off the buffer */
+                       if (ctx->avail_in) {
+                               php_http_buffer_cut(PHP_HTTP_BUFFER(ctx->opaque), 0, PHP_HTTP_BUFFER(ctx->opaque)->used - ctx->avail_in);
+                       } else {
+                               php_http_buffer_reset(PHP_HTTP_BUFFER(ctx->opaque));
+                       }
+
+                       /* size buffer down to actual size */
+                       *encoded_len -= ctx->avail_out;
+                       *encoded = erealloc(*encoded, *encoded_len + 1);
+                       (*encoded)[*encoded_len] = '\0';
+                       return SUCCESS;
+       }
+
+       PTR_SET(*encoded, NULL);
+       *encoded_len = 0;
+       php_error_docref(NULL, E_WARNING, "Failed to update deflate stream: %s", zError(status));
+       return FAILURE;
+}
+
+static ZEND_RESULT_CODE deflate_flush(php_http_encoding_stream_t *s, char **encoded, size_t *encoded_len)
+{
+       int status;
+       z_streamp ctx = s->ctx;
+
+       *encoded_len = PHP_HTTP_DEFLATE_BUFFER_SIZE;
+       *encoded = emalloc(*encoded_len);
+
+       ctx->avail_in = 0;
+       ctx->next_in = NULL;
+       ctx->avail_out = *encoded_len;
+       ctx->next_out = (Bytef *) *encoded;
+
+       status = deflate(ctx, Z_FULL_FLUSH);
+       if (EXPECTED(Z_OK == status || Z_STREAM_END == status)) {
+               *encoded_len = PHP_HTTP_DEFLATE_BUFFER_SIZE - ctx->avail_out;
+               *encoded = erealloc(*encoded, *encoded_len + 1);
+               (*encoded)[*encoded_len] = '\0';
+               return SUCCESS;
+       }
+
+       PTR_SET(*encoded, NULL);
+       *encoded_len = 0;
+       php_error_docref(NULL, E_WARNING, "Failed to flush deflate stream: %s", zError(status));
+       return FAILURE;
+}
+
+static ZEND_RESULT_CODE deflate_finish(php_http_encoding_stream_t *s, char **encoded, size_t *encoded_len)
+{
+       int status;
+       z_streamp ctx = s->ctx;
+
+       *encoded_len = PHP_HTTP_DEFLATE_BUFFER_SIZE;
+       *encoded = emalloc(*encoded_len);
+
+       /* deflate remaining input */
+       ctx->next_in = (Bytef *) PHP_HTTP_BUFFER(ctx->opaque)->data;
+       ctx->avail_in = PHP_HTTP_BUFFER(ctx->opaque)->used;
+
+       ctx->avail_out = *encoded_len;
+       ctx->next_out = (Bytef *) *encoded;
+
+       do {
+               status = deflate(ctx, Z_FINISH);
+       } while (Z_OK == status);
+
+       if (EXPECTED(Z_STREAM_END == status)) {
+               /* cut processed input off */
+               php_http_buffer_cut(PHP_HTTP_BUFFER(ctx->opaque), 0, PHP_HTTP_BUFFER(ctx->opaque)->used - ctx->avail_in);
+
+               /* size down */
+               *encoded_len -= ctx->avail_out;
+               *encoded = erealloc(*encoded, *encoded_len + 1);
+               (*encoded)[*encoded_len] = '\0';
+               return SUCCESS;
+       }
+
+       PTR_SET(*encoded, NULL);
+       *encoded_len = 0;
+       php_error_docref(NULL, E_WARNING, "Failed to finish deflate stream: %s", zError(status));
+       return FAILURE;
+}
+
+static zend_bool deflate_done(php_http_encoding_stream_t *s)
+{
+       z_streamp ctx = s->ctx;
+       return !ctx->avail_in && !PHP_HTTP_BUFFER(ctx->opaque)->used;
+}
+
+static void deflate_dtor(php_http_encoding_stream_t *s)
+{
+       if (EXPECTED(s->ctx)) {
+               z_streamp ctx = s->ctx;
+
+               if (EXPECTED(ctx->opaque)) {
+                       php_http_buffer_free((php_http_buffer_t **) &ctx->opaque);
+               }
+               deflateEnd(ctx);
+               pefree(ctx, (s->flags & PHP_HTTP_ENCODING_STREAM_PERSISTENT));
+               s->ctx = NULL;
+       }
+}
+
+static inline int php_http_inflate_rounds(z_stream *Z, int flush, char **buf, size_t *len)
+{
+       int status = 0, round = 0;
+       php_http_buffer_t buffer;
+
+       *buf = NULL;
+       *len = 0;
+
+       php_http_buffer_init_ex(&buffer, Z->avail_in, PHP_HTTP_BUFFER_INIT_PREALLOC);
+
+       do {
+               if (UNEXPECTED(PHP_HTTP_BUFFER_NOMEM == php_http_buffer_resize_ex(&buffer, buffer.size, 0, 1))) {
+                       status = Z_MEM_ERROR;
+               } else {
+                       Z->avail_out = buffer.free;
+                       Z->next_out = (Bytef *) buffer.data + buffer.used;
+#if 0
+                       fprintf(stderr, "\n%3d: %3d PRIOR: size=%7lu,\tfree=%7lu,\tused=%7lu,\tavail_in=%7lu,\tavail_out=%7lu\n", round, status, buffer.size, buffer.free, buffer.used, Z->avail_in, Z->avail_out);
+#endif
+                       status = inflate(Z, flush);
+                       php_http_buffer_account(&buffer, buffer.free - Z->avail_out);
+#if 0
+                       fprintf(stderr, "%3d: %3d AFTER: size=%7lu,\tfree=%7lu,\tused=%7lu,\tavail_in=%7lu,\tavail_out=%7lu\n", round, status, buffer.size, buffer.free, buffer.used, Z->avail_in, Z->avail_out);
+#endif
+                       PHP_HTTP_INFLATE_BUFFER_SIZE_ALIGN(buffer.size);
+               }
+       } while ((Z_BUF_ERROR == status || (Z_OK == status && Z->avail_in)) && ++round < PHP_HTTP_INFLATE_ROUNDS);
+
+       if (EXPECTED(status == Z_OK || status == Z_STREAM_END)) {
+               php_http_buffer_shrink(&buffer);
+               php_http_buffer_fix(&buffer);
+               *buf = buffer.data;
+               *len = buffer.used;
+       } else {
+               php_http_buffer_dtor(&buffer);
+       }
+
+       return status;
+}
+
+ZEND_RESULT_CODE php_http_encoding_inflate(const char *data, size_t data_len, char **decoded, size_t *decoded_len)
+{
+       z_stream Z;
+       int status, wbits = PHP_HTTP_WINDOW_BITS_ANY;
+
+       memset(&Z, 0, sizeof(z_stream));
+
+retry_raw_inflate:
+       status = inflateInit2(&Z, wbits);
+       if (EXPECTED(Z_OK == status)) {
+               Z.next_in = (Bytef *) data;
+               Z.avail_in = data_len + 1; /* include the terminating NULL, see #61287 */
+
+               switch (status = php_http_inflate_rounds(&Z, Z_NO_FLUSH, decoded, decoded_len)) {
+                       case Z_STREAM_END:
+                               inflateEnd(&Z);
+                               return SUCCESS;
+
+                       case Z_OK:
+                               status = Z_DATA_ERROR;
+                               break;
+
+                       case Z_DATA_ERROR:
+                               /* raw deflated data? */
+                               if (PHP_HTTP_WINDOW_BITS_ANY == wbits) {
+                                       inflateEnd(&Z);
+                                       wbits = PHP_HTTP_WINDOW_BITS_RAW;
+                                       goto retry_raw_inflate;
+                               }
+                               break;
+               }
+               inflateEnd(&Z);
+
+               if (*decoded_len && *decoded) {
+                       efree(*decoded);
+               }
+       }
+
+       php_error_docref(NULL, E_WARNING, "Could not inflate data: %s", zError(status));
+       return FAILURE;
+}
+
+static php_http_encoding_stream_t *inflate_init(php_http_encoding_stream_t *s)
+{
+       int status, wbits, p = (s->flags & PHP_HTTP_ENCODING_STREAM_PERSISTENT);
+       z_streamp ctx = pecalloc(1, sizeof(z_stream), p);
+
+       PHP_HTTP_INFLATE_WBITS_SET(s->flags, wbits);
+
+       if (EXPECTED(Z_OK == (status = inflateInit2(ctx, wbits)))) {
+               if ((ctx->opaque = php_http_buffer_init_ex(NULL, PHP_HTTP_DEFLATE_BUFFER_SIZE, p ? PHP_HTTP_BUFFER_INIT_PERSISTENT : 0))) {
+                       s->ctx = ctx;
+                       return s;
+               }
+               inflateEnd(ctx);
+               status = Z_MEM_ERROR;
+       }
+       pefree(ctx, p);
+       php_error_docref(NULL, E_WARNING, "Failed to initialize inflate stream: %s", zError(status));
+       return NULL;
+}
+
+static php_http_encoding_stream_t *inflate_copy(php_http_encoding_stream_t *from, php_http_encoding_stream_t *to)
+{
+       int status, p = from->flags & PHP_HTTP_ENCODING_STREAM_PERSISTENT;
+       z_streamp from_ctx = from->ctx, to_ctx = pecalloc(1, sizeof(*to_ctx), p);
+
+       if (Z_OK == (status = inflateCopy(to_ctx, from_ctx))) {
+               if ((to_ctx->opaque = php_http_buffer_init_ex(NULL, PHP_HTTP_DEFLATE_BUFFER_SIZE, p ? PHP_HTTP_BUFFER_INIT_PERSISTENT : 0))) {
+                       php_http_buffer_append(to_ctx->opaque, PHP_HTTP_BUFFER(from_ctx->opaque)->data, PHP_HTTP_BUFFER(from_ctx->opaque)->used);
+                       to->ctx = to_ctx;
+                       return to;
+               }
+               inflateEnd(to_ctx);
+               status = Z_MEM_ERROR;
+       }
+       php_error_docref(NULL, E_WARNING, "Failed to copy inflate encoding stream: %s", zError(status));
+       return NULL;
+}
+
+static ZEND_RESULT_CODE inflate_update(php_http_encoding_stream_t *s, const char *data, size_t data_len, char **decoded, size_t *decoded_len)
+{
+       int status;
+       z_streamp ctx = s->ctx;
+
+       /* append input to buffer */
+       php_http_buffer_append(PHP_HTTP_BUFFER(ctx->opaque), data, data_len);
+
+retry_raw_inflate:
+       ctx->next_in = (Bytef *) PHP_HTTP_BUFFER(ctx->opaque)->data;
+       ctx->avail_in = PHP_HTTP_BUFFER(ctx->opaque)->used;
+
+       switch (status = php_http_inflate_rounds(ctx, PHP_HTTP_INFLATE_FLUSH_FLAG(s->flags), decoded, decoded_len)) {
+               case Z_OK:
+               case Z_STREAM_END:
+                       /* cut off */
+                       if (ctx->avail_in) {
+                               php_http_buffer_cut(PHP_HTTP_BUFFER(ctx->opaque), 0, PHP_HTTP_BUFFER(ctx->opaque)->used - ctx->avail_in);
+                       } else {
+                               php_http_buffer_reset(PHP_HTTP_BUFFER(ctx->opaque));
+                       }
+                       return SUCCESS;
+
+               case Z_DATA_ERROR:
+                       /* raw deflated data ? */
+                       if (!(s->flags & PHP_HTTP_INFLATE_TYPE_RAW) && !ctx->total_out) {
+                               inflateEnd(ctx);
+                               s->flags |= PHP_HTTP_INFLATE_TYPE_RAW;
+                               inflateInit2(ctx, PHP_HTTP_WINDOW_BITS_RAW);
+                               goto retry_raw_inflate;
+                       }
+                       break;
+       }
+
+       php_error_docref(NULL, E_WARNING, "Failed to update inflate stream: %s", zError(status));
+       return FAILURE;
+}
+
+static ZEND_RESULT_CODE inflate_finish(php_http_encoding_stream_t *s, char **decoded, size_t *decoded_len)
+{
+       int status;
+       z_streamp ctx = s->ctx;
+
+       if (!PHP_HTTP_BUFFER(ctx->opaque)->used) {
+               *decoded = NULL;
+               *decoded_len = 0;
+               return SUCCESS;
+       }
+
+       *decoded_len = (PHP_HTTP_BUFFER(ctx->opaque)->used + 1) * PHP_HTTP_INFLATE_ROUNDS;
+       *decoded = emalloc(*decoded_len);
+
+       /* inflate remaining input */
+       ctx->next_in = (Bytef *) PHP_HTTP_BUFFER(ctx->opaque)->data;
+       ctx->avail_in = PHP_HTTP_BUFFER(ctx->opaque)->used;
+
+       ctx->avail_out = *decoded_len;
+       ctx->next_out = (Bytef *) *decoded;
+
+       if (Z_STREAM_END == (status = inflate(ctx, Z_FINISH))) {
+               /* cut processed input off */
+               php_http_buffer_cut(PHP_HTTP_BUFFER(ctx->opaque), 0, PHP_HTTP_BUFFER(ctx->opaque)->used - ctx->avail_in);
+
+               /* size down */
+               *decoded_len -= ctx->avail_out;
+               *decoded = erealloc(*decoded, *decoded_len + 1);
+               (*decoded)[*decoded_len] = '\0';
+               return SUCCESS;
+       }
+
+       PTR_SET(*decoded, NULL);
+       *decoded_len = 0;
+       php_error_docref(NULL, E_WARNING, "Failed to finish inflate stream: %s", zError(status));
+       return FAILURE;
+}
+
+static zend_bool inflate_done(php_http_encoding_stream_t *s)
+{
+       z_streamp ctx = s->ctx;
+       return !ctx->avail_in && !PHP_HTTP_BUFFER(ctx->opaque)->used;
+}
+
+static void inflate_dtor(php_http_encoding_stream_t *s)
+{
+       if (EXPECTED(s->ctx)) {
+               z_streamp ctx = s->ctx;
+
+               if (EXPECTED(ctx->opaque)) {
+                       php_http_buffer_free((php_http_buffer_t **) &ctx->opaque);
+               }
+               inflateEnd(ctx);
+               pefree(ctx, (s->flags & PHP_HTTP_ENCODING_STREAM_PERSISTENT));
+               s->ctx = NULL;
+       }
+}
+
+static php_http_encoding_stream_ops_t php_http_encoding_deflate_ops = {
+       deflate_init,
+       deflate_copy,
+       deflate_update,
+       deflate_flush,
+       deflate_done,
+       deflate_finish,
+       deflate_dtor
+};
+
+php_http_encoding_stream_ops_t *php_http_encoding_stream_get_deflate_ops(void)
+{
+       return &php_http_encoding_deflate_ops;
+}
+
+static php_http_encoding_stream_ops_t php_http_encoding_inflate_ops = {
+       inflate_init,
+       inflate_copy,
+       inflate_update,
+       NULL,
+       inflate_done,
+       inflate_finish,
+       inflate_dtor
+};
+
+php_http_encoding_stream_ops_t *php_http_encoding_stream_get_inflate_ops(void)
+{
+       return &php_http_encoding_inflate_ops;
+}
+
+static zend_class_entry *php_http_deflate_stream_class_entry;
+zend_class_entry *php_http_get_deflate_stream_class_entry(void)
+{
+       return php_http_deflate_stream_class_entry;
+}
+
+static zend_class_entry *php_http_inflate_stream_class_entry;
+zend_class_entry *php_http_get_inflate_stream_class_entry(void)
+{
+       return php_http_inflate_stream_class_entry;
+}
+
+
+ZEND_BEGIN_ARG_INFO_EX(ai_HttpDeflateStream_encode, 0, 0, 1)
+       ZEND_ARG_INFO(0, data)
+       ZEND_ARG_INFO(0, flags)
+ZEND_END_ARG_INFO();
+static PHP_METHOD(HttpDeflateStream, encode)
+{
+       char *str;
+       size_t len;
+       zend_long flags = 0;
+
+       if (SUCCESS == zend_parse_parameters(ZEND_NUM_ARGS(), "s|l", &str, &len, &flags)) {
+               char *enc_str = NULL;
+               size_t enc_len;
+
+               if (SUCCESS == php_http_encoding_deflate(flags, str, len, &enc_str, &enc_len)) {
+                       if (enc_str) {
+                               RETURN_STR(php_http_cs2zs(enc_str, enc_len));
+                       } else {
+                               RETURN_EMPTY_STRING();
+                       }
+               }
+       }
+       RETURN_FALSE;
+}
+
+static zend_function_entry php_http_deflate_stream_methods[] = {
+       PHP_ME(HttpDeflateStream, encode, ai_HttpDeflateStream_encode, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
+       EMPTY_FUNCTION_ENTRY
+};
+
+ZEND_BEGIN_ARG_INFO_EX(ai_HttpInflateStream_decode, 0, 0, 1)
+       ZEND_ARG_INFO(0, data)
+ZEND_END_ARG_INFO();
+static PHP_METHOD(HttpInflateStream, decode)
+{
+       char *str;
+       size_t len;
+
+       if (SUCCESS == zend_parse_parameters(ZEND_NUM_ARGS(), "s", &str, &len)) {
+               char *enc_str = NULL;
+               size_t enc_len;
+
+               if (SUCCESS == php_http_encoding_inflate(str, len, &enc_str, &enc_len)) {
+                       if (enc_str) {
+                               RETURN_STR(php_http_cs2zs(enc_str, enc_len));
+                       } else {
+                               RETURN_EMPTY_STRING();
+                       }
+               }
+       }
+       RETURN_FALSE;
+}
+
+static zend_function_entry php_http_inflate_stream_methods[] = {
+       PHP_ME(HttpInflateStream, decode, ai_HttpInflateStream_decode, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
+       EMPTY_FUNCTION_ENTRY
+};
+
+PHP_MINIT_FUNCTION(http_encoding_zlib)
+{
+       zend_class_entry ce;
+
+       memset(&ce, 0, sizeof(ce));
+       INIT_NS_CLASS_ENTRY(ce, "http\\Encoding\\Stream", "Deflate", php_http_deflate_stream_methods);
+       php_http_deflate_stream_class_entry = zend_register_internal_class_ex(&ce, php_http_get_encoding_stream_class_entry());
+       php_http_deflate_stream_class_entry->create_object = php_http_encoding_stream_object_new;
+
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("TYPE_GZIP"), PHP_HTTP_DEFLATE_TYPE_GZIP);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("TYPE_ZLIB"), PHP_HTTP_DEFLATE_TYPE_ZLIB);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("TYPE_RAW"), PHP_HTTP_DEFLATE_TYPE_RAW);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("LEVEL_DEF"), PHP_HTTP_DEFLATE_LEVEL_DEF);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("LEVEL_MIN"), PHP_HTTP_DEFLATE_LEVEL_MIN);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("LEVEL_MAX"), PHP_HTTP_DEFLATE_LEVEL_MAX);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("STRATEGY_DEF"), PHP_HTTP_DEFLATE_STRATEGY_DEF);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("STRATEGY_FILT"), PHP_HTTP_DEFLATE_STRATEGY_FILT);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("STRATEGY_HUFF"), PHP_HTTP_DEFLATE_STRATEGY_HUFF);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("STRATEGY_RLE"), PHP_HTTP_DEFLATE_STRATEGY_RLE);
+       zend_declare_class_constant_long(php_http_deflate_stream_class_entry, ZEND_STRL("STRATEGY_FIXED"), PHP_HTTP_DEFLATE_STRATEGY_FIXED);
+
+       memset(&ce, 0, sizeof(ce));
+       INIT_NS_CLASS_ENTRY(ce, "http\\Encoding\\Stream", "Inflate", php_http_inflate_stream_methods);
+       php_http_inflate_stream_class_entry = zend_register_internal_class_ex(&ce, php_http_get_encoding_stream_class_entry());
+       php_http_inflate_stream_class_entry->create_object = php_http_encoding_stream_object_new;
+
+       return SUCCESS;
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: noet sw=4 ts=4 fdm=marker
+ * vim<600: noet sw=4 ts=4
+ */
+