- add ob_(deflate|inflate)handler
[m6w6/ext-http] / http_send_api.c
index 023c6ecb4398f78b390574a034b3388bfcb220df..103dc958a77fc8df65b32f8c5169c10c0156f682 100644 (file)
@@ -1,16 +1,13 @@
 /*
-   +----------------------------------------------------------------------+
-   | PECL :: http                                                         |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.0 of the PHP license, that  |
-   | is bundled with this package in the file LICENSE, and is available   |
-   | through the world-wide-web at http://www.php.net/license/3_0.txt.    |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2004-2005 Michael Wallner <mike@php.net>               |
-   +----------------------------------------------------------------------+
+    +--------------------------------------------------------------------+
+    | 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) 2004-2005, Michael Wallner <mike@php.net>            |
+    +--------------------------------------------------------------------+
 */
 
 /* $Id$ */
 #ifdef HAVE_CONFIG_H
 #      include "config.h"
 #endif
-#include "php.h"
+
+#define HTTP_WANT_ZLIB
+#define HTTP_WANT_MAGIC
+#include "php_http.h"
 
 #include "SAPI.h"
 #include "php_streams.h"
 #include "ext/standard/php_lcg.h"
 
-#include "php_http.h"
-#include "php_http_std_defs.h"
 #include "php_http_api.h"
+#include "php_http_cache_api.h"
 #include "php_http_date_api.h"
-#include "php_http_send_api.h"
+#include "php_http_encoding_api.h"
 #include "php_http_headers_api.h"
-#include "php_http_date_api.h"
-#include "php_http_cache_api.h"
-
-ZEND_EXTERN_MODULE_GLOBALS(http);
+#include "php_http_send_api.h"
 
-#define http_flush() _http_flush(TSRMLS_C)
+#define http_flush(d, l) _http_flush((d), (l) TSRMLS_CC)
 /* {{{ static inline void http_flush() */
-static inline void _http_flush(TSRMLS_D)
+static inline void _http_flush(const char *data, size_t data_len TSRMLS_DC)
 {
+       PHPWRITE(data, data_len);
        php_end_ob_buffer(1, 1 TSRMLS_CC);
        sapi_flush(TSRMLS_C);
-}
-/* }}} */
-
-#define http_sleep() _http_sleep(TSRMLS_C)
-/* {{{ static inline void http_sleep() */
-static inline void _http_sleep(TSRMLS_D)
-{
+       
 #define HTTP_MSEC(s) (s * 1000)
 #define HTTP_USEC(s) (HTTP_MSEC(s) * 1000)
 #define HTTP_NSEC(s) (HTTP_USEC(s) * 1000)
@@ -74,143 +65,191 @@ static inline void _http_sleep(TSRMLS_D)
 }
 /* }}} */
 
-#define HTTP_CHUNK_AVAIL(len) ((len -= HTTP_G(send).buffer_size) >= 0)
-#define HTTP_CHUNK_WRITE(data, l, dofree, dosleep) \
-       { \
-               long size = (long) l; \
- \
-               if ((1 > size) || (size - PHPWRITE(data, size))) { \
-                       if (dofree) { \
-                               efree(data); \
-                       } \
-                       return FAILURE; \
-               } \
- \
-               http_flush(); \
-               if (dosleep) { \
-                       http_sleep(); \
-               } \
+/* {{{ http_send_response_start */
+#define http_send_response_start(b, cl) _http_send_response_start((b), (cl) TSRMLS_CC)
+static inline void _http_send_response_start(void **buffer, size_t content_length TSRMLS_DC)
+{
+       int encoding;
+       
+       if ((encoding = http_encoding_response_start(content_length))) {
+#ifdef HTTP_HAVE_ZLIB
+               *buffer = http_encoding_deflate_stream_init(NULL, 
+                       (encoding == HTTP_ENCODING_GZIP) ? 
+                               HTTP_DEFLATE_TYPE_GZIP : HTTP_DEFLATE_TYPE_ZLIB);
+#endif
        }
+}
+/* }}} */
 
-#define http_send_chunk(d, b, e, m) _http_send_chunk((d), (b), (e), (m) TSRMLS_CC)
-/* {{{ static STATUS http_send_chunk(const void *, size_t, size_t, http_send_mode) */
-static STATUS _http_send_chunk(const void *data, size_t begin, size_t end, http_send_mode mode TSRMLS_DC)
+/* {{{ http_send_response_data_plain */
+#define http_send_response_data_plain(b, d, dl) _http_send_response_data_plain((b), (d), (dl) TSRMLS_CC)
+static inline void _http_send_response_data_plain(void **buffer, const char *data, size_t data_len TSRMLS_DC)
 {
-       long len = end - begin;
+       if (HTTP_G(send).deflate.encoding) {
+#ifdef HTTP_HAVE_ZLIB
+               char *encoded;
+               size_t encoded_len;
+               http_encoding_stream *s = *((http_encoding_stream **) buffer);
+               
+               http_encoding_deflate_stream_update(s, data, data_len, &encoded, &encoded_len);
+               phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, HTTP_G(send).buffer_size, _http_flush TSRMLS_CC);
+               efree(encoded);
+#else
+               http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
+#endif
+       } else {
+               phpstr_chunked_output((phpstr **) buffer, data, data_len, HTTP_G(send).buffer_size, _http_flush TSRMLS_CC);
+       }
+}
+/* }}} */
 
+#define HTTP_CHUNK_AVAIL(len, cs) ((len -= cs) >= 0)
+/* {{{ http_send_response_data_fetch */
+#define http_send_response_data_fetch(b, d, l, m, s, e) _http_send_response_data_fetch((b), (d), (l), (m), (s), (e) TSRMLS_CC)
+static inline void _http_send_response_data_fetch(void **buffer, const void *data, size_t data_len, http_send_mode mode, size_t begin, size_t end TSRMLS_DC)
+{
+       long len = end - begin, chunk_size = 40960;
+       
        switch (mode)
        {
                case SEND_RSRC:
                {
-                       char *buf;
                        php_stream *s = (php_stream *) data;
 
-                       if (php_stream_seek(s, begin, SEEK_SET)) {
-                               return FAILURE;
+                       if (SUCCESS == php_stream_seek(s, begin, SEEK_SET)) {
+                               char *buf = emalloc(chunk_size);
+
+                               while (HTTP_CHUNK_AVAIL(len, chunk_size)) {
+                                       http_send_response_data_plain(buffer, buf, php_stream_read(s, buf, chunk_size));
+                               }
+                               /* read & write left over */
+                               if (len) {
+                                       http_send_response_data_plain(buffer, buf, php_stream_read(s, buf, chunk_size + len));
+                               }
+       
+                               efree(buf);
                        }
-
-                       buf = emalloc(HTTP_G(send).buffer_size);
-
-                       while (HTTP_CHUNK_AVAIL(len)) {
-                               HTTP_CHUNK_WRITE(buf, php_stream_read(s, buf, HTTP_G(send).buffer_size), 1, 1);
-                       }
-
-                       /* read & write left over */
-                       if (len) {
-                               HTTP_CHUNK_WRITE(buf, php_stream_read(s, buf, HTTP_G(send).buffer_size + len), 1, 0);
-                       }
-
-                       efree(buf);
-                       return SUCCESS;
                }
+               break;
 
                case SEND_DATA:
                {
                        char *s = (char *) data + begin;
 
-                       while (HTTP_CHUNK_AVAIL(len)) {
-                               HTTP_CHUNK_WRITE(s, HTTP_G(send).buffer_size, 0, 1);
-                               s += HTTP_G(send).buffer_size;
+                       while (HTTP_CHUNK_AVAIL(len, chunk_size)) {
+                               http_send_response_data_plain(buffer, s, chunk_size);
+                               s += chunk_size;
                        }
-
                        /* write left over */
                        if (len) {
-                               HTTP_CHUNK_WRITE(s, HTTP_G(send).buffer_size + len, 0, 0);
+                               http_send_response_data_plain(buffer, s, chunk_size + len);
                        }
-
-                       return SUCCESS;
                }
-
-               default:
-                       return FAILURE;
                break;
+
+               EMPTY_SWITCH_DEFAULT_CASE();
        }
 }
 /* }}} */
 
+/* {{{ http_send_response_finish */
+#define http_send_response_finish(b) _http_send_response_finish((b) TSRMLS_CC)
+static inline void _http_send_response_finish(void **buffer TSRMLS_DC)
+{
+       if (HTTP_G(send).deflate.encoding) {
+#ifdef HTTP_HAVE_ZLIB
+               char *encoded = NULL;
+               size_t encoded_len = 0;
+               http_encoding_stream *s = *((http_encoding_stream **) buffer);
+               
+               http_encoding_deflate_stream_finish(s, &encoded, &encoded_len);
+               phpstr_chunked_output((phpstr **) &s->storage, encoded, encoded_len, 0, _http_flush TSRMLS_CC);
+               http_encoding_deflate_stream_free(&s);
+               STR_FREE(encoded);
+#else
+               http_error(HE_ERROR, HTTP_E_RESPONSE, "Attempt to send GZIP response despite being able to do so; please report this bug");
+#endif
+       } else {
+               phpstr_chunked_output((phpstr **) buffer, NULL, 0, 0, _http_flush TSRMLS_CC);
+       }
+}
+/* }}} */
+
+
+/* {{{ STATUS http_send_header(char *, char *, zend_bool) */
+PHP_HTTP_API STATUS _http_send_header_ex(const char *name, size_t name_len, const char *value, size_t value_len, zend_bool replace, char **sent_header TSRMLS_DC)
+{
+       STATUS ret;
+       size_t header_len = sizeof(": ") + name_len + value_len + 1;
+       char *header = emalloc(header_len + 1);
+
+       header[header_len] = '\0';
+       header_len = snprintf(header, header_len, "%s: %s", name, value);
+       ret = http_send_header_string_ex(header, header_len, replace);
+       if (sent_header) {
+               *sent_header = header;
+       } else {
+               efree(header);
+       }
+       return ret;
+}
+/* }}} */
 
 /* {{{ STATUS http_send_status_header(int, char *) */
-PHP_HTTP_API STATUS _http_send_status_header_ex(int status, const char *header, zend_bool replace TSRMLS_DC)
+PHP_HTTP_API STATUS _http_send_status_header_ex(int status, const char *header, size_t header_len, zend_bool replace TSRMLS_DC)
 {
        STATUS ret;
-       sapi_header_line h = {(char *) header, header ? strlen(header) : 0, status};
+       sapi_header_line h = {(char *) header, header_len, status};
        if (SUCCESS != (ret = sapi_header_op(replace ? SAPI_HEADER_REPLACE : SAPI_HEADER_ADD, &h TSRMLS_CC))) {
-               http_error_ex(E_WARNING, HTTP_E_HEADER, "Could not send header: %s (%d)", header, status);
+               http_error_ex(HE_WARNING, HTTP_E_HEADER, "Could not send header: %s (%d)", header, status);
        }
        return ret;
 }
 /* }}} */
 
 /* {{{ STATUS http_send_last_modified(int) */
-PHP_HTTP_API STATUS _http_send_last_modified(time_t t TSRMLS_DC)
+PHP_HTTP_API STATUS _http_send_last_modified_ex(time_t t, char **sent_header TSRMLS_DC)
 {
-       char *date = NULL;
-       if (date = http_date(t)) {
-               char modified[96] = "Last-Modified: ";
-               strcat(modified, date);
-               efree(date);
-
-               /* remember */
-               HTTP_G(send).last_modified = t;
+       STATUS ret;
+       char *date = http_date(t);
 
-               return http_send_header(modified);
+       if (!date) {
+               return FAILURE;
        }
-       return FAILURE;
+
+       ret = http_send_header_ex("Last-Modified", lenof("Last-Modified"), date, strlen(date), 1, sent_header);
+       efree(date);
+
+       /* remember */
+       HTTP_G(send).last_modified = t;
+
+       return ret;
 }
 /* }}} */
 
 /* {{{ STATUS http_send_etag(char *, size_t) */
-PHP_HTTP_API STATUS _http_send_etag(const char *etag, size_t etag_len TSRMLS_DC)
+PHP_HTTP_API STATUS _http_send_etag_ex(const char *etag, size_t etag_len, char **sent_header TSRMLS_DC)
 {
        STATUS status;
        char *etag_header;
 
        if (!etag_len){
-               http_error_ex(E_WARNING, HTTP_E_HEADER, "Attempt to send empty ETag (previous: %s)\n", HTTP_G(send).unquoted_etag);
+               http_error_ex(HE_WARNING, HTTP_E_HEADER, "Attempt to send empty ETag (previous: %s)\n", HTTP_G(send).unquoted_etag);
                return FAILURE;
        }
 
        /* remember */
-       STR_FREE(HTTP_G(send).unquoted_etag);
-       HTTP_G(send).unquoted_etag = estrdup(etag);
-
-       etag_header = ecalloc(1, sizeof("ETag: \"\"") + etag_len);
-       sprintf(etag_header, "ETag: \"%s\"", etag);
-       status = http_send_header(etag_header);
-       efree(etag_header);
-       return status;
-}
-/* }}} */
-
-/* {{{ STATUS http_send_cache_control(char *, size_t) */
-PHP_HTTP_API STATUS _http_send_cache_control(const char *cache_control, size_t cc_len TSRMLS_DC)
-{
-       STATUS status;
-       char *cc_header = ecalloc(1, sizeof("Cache-Control: ") + cc_len);
+       STR_SET(HTTP_G(send).unquoted_etag, estrndup(etag, etag_len));
 
-       sprintf(cc_header, "Cache-Control: %s", cache_control);
-       status = http_send_header(cc_header);
-       efree(cc_header);
+       etag_len = spprintf(&etag_header, 0, "ETag: \"%s\"", etag);
+       status = http_send_header_string_ex(etag_header, etag_len, 1);
+       
+       if (sent_header) {
+               *sent_header = etag_header;
+       } else {
+               efree(etag_header);
+       }
+       
        return status;
 }
 /* }}} */
@@ -218,23 +257,13 @@ PHP_HTTP_API STATUS _http_send_cache_control(const char *cache_control, size_t c
 /* {{{ STATUS http_send_content_type(char *, size_t) */
 PHP_HTTP_API STATUS _http_send_content_type(const char *content_type, size_t ct_len TSRMLS_DC)
 {
-       STATUS status;
-       char *ct_header;
-
-       if (!strchr(content_type, '/')) {
-               http_error_ex(E_WARNING, HTTP_E_PARAM, "Content-Type '%s' doesn't seem to consist of a primary and a secondary part", content_type);
-               return FAILURE;
-       }
+       HTTP_CHECK_CONTENT_TYPE(content_type, return FAILURE);
 
        /* remember for multiple ranges */
        STR_FREE(HTTP_G(send).content_type);
        HTTP_G(send).content_type = estrndup(content_type, ct_len);
 
-       ct_header = ecalloc(1, sizeof("Content-Type: ") + ct_len);
-       sprintf(ct_header, "Content-Type: %s", content_type);
-       status = http_send_header(ct_header);
-       efree(ct_header);
-       return status;
+       return http_send_header_ex("Content-Type", lenof("Content-Type"), content_type, ct_len, 1, NULL);
 }
 /* }}} */
 
@@ -252,158 +281,153 @@ PHP_HTTP_API STATUS _http_send_content_disposition(const char *filename, size_t
                sprintf(cd_header, "Content-Disposition: attachment; filename=\"%s\"", filename);
        }
 
-       status = http_send_header(cd_header);
+       status = http_send_header_string(cd_header);
        efree(cd_header);
        return status;
 }
 /* }}} */
 
-/* {{{ STATUS http_send_ranges(HashTable *, void *, size_t, http_send_mode) */
-PHP_HTTP_API STATUS _http_send_ranges(HashTable *ranges, const void *data, size_t size, http_send_mode mode TSRMLS_DC)
-{
-       long **begin, **end;
-       zval **zrange;
-
-       /* single range */
-       if (zend_hash_num_elements(ranges) == 1) {
-               char range_header[256] = {0};
-
-               if (SUCCESS != zend_hash_index_find(ranges, 0, (void **) &zrange) ||
-                       SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 0, (void **) &begin) ||
-                       SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 1, (void **) &end)) {
-                       http_send_status(500);
-                       return FAILURE;
-               }
-
-               /* Send HTTP 206 Partial Content */
-               http_send_status(206);
-
-               /* send content range header */
-               snprintf(range_header, 255, "Content-Range: bytes %d-%d/%d", **begin, **end, size);
-               http_send_header(range_header);
-
-               /* send requested chunk */
-               return http_send_chunk(data, **begin, **end + 1, mode);
-       }
-
-       /* multi range */
-       else {
-               char bound[23] = {0}, preface[1024] = {0},
-                       multi_header[68] = "Content-Type: multipart/byteranges; boundary=";
-
-               /* Send HTTP 206 Partial Content */
-               http_send_status(206);
-
-               /* send multipart/byteranges header */
-               snprintf(bound, 22, "--%d%0.9f", time(NULL), php_combined_lcg(TSRMLS_C));
-               strncat(multi_header, bound + 2, 21);
-               http_send_header(multi_header);
-
-               /* send each requested chunk */
-               FOREACH_HASH_VAL(ranges, zrange) {
-                       if (SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 0, (void **) &begin) ||
-                               SUCCESS != zend_hash_index_find(Z_ARRVAL_PP(zrange), 1, (void **) &end)) {
-                               break;
-                       }
-
-                       snprintf(preface, 1023,
-                               HTTP_CRLF "%s"
-                               HTTP_CRLF "Content-Type: %s"
-                               HTTP_CRLF "Content-Range: bytes %ld-%ld/%ld"
-                               HTTP_CRLF
-                               HTTP_CRLF,
-
-                               bound,
-                               HTTP_G(send).content_type ? HTTP_G(send).content_type : "application/x-octetstream",
-                               **begin,
-                               **end,
-                               size
-                       );
-
-                       PHPWRITE(preface, strlen(preface));
-                       http_send_chunk(data, **begin, **end + 1, mode);
-               }
-
-               /* write boundary once more */
-               PHPWRITE(HTTP_CRLF, lenof(HTTP_CRLF));
-               PHPWRITE(bound, strlen(bound));
-               PHPWRITE("--", lenof("--"));
-
-               return SUCCESS;
-       }
-}
-/* }}} */
-
 /* {{{ STATUS http_send(void *, size_t, http_send_mode) */
-PHP_HTTP_API STATUS _http_send(const void *data_ptr, size_t data_size, http_send_mode data_mode TSRMLS_DC)
+PHP_HTTP_API STATUS _http_send_ex(const void *data_ptr, size_t data_size, http_send_mode data_mode, zend_bool no_cache TSRMLS_DC)
 {
+       void *s = NULL;
        HashTable ranges;
        http_range_status range_status;
-       int cache_etag = 0;
-
+       int cache_etag = http_interrupt_ob_etaghandler();
+       
        if (!data_ptr) {
                return FAILURE;
        }
        if (!data_size) {
                return SUCCESS;
        }
-
-       /* stop on-the-fly etag generation */
-       if (cache_etag = HTTP_G(etag).started) {
-               /* interrupt ob_etaghandler */
-               HTTP_G(etag).started = 0;
-       }
-
+       
        /* enable partial dl and resume */
-       http_send_header("Accept-Ranges: bytes");
+       http_send_header_string("Accept-Ranges: bytes");
 
        zend_hash_init(&ranges, 0, NULL, ZVAL_PTR_DTOR, 0);
        range_status = http_get_request_ranges(&ranges, data_size);
 
-       if (range_status == RANGE_ERR) {
-               zend_hash_destroy(&ranges);
-               http_send_status(416);
-               return FAILURE;
-       }
-
-       /* Range Request - only send ranges if entity hasn't changed */
-       if (    range_status == RANGE_OK &&
-                       http_match_etag_ex("HTTP_IF_MATCH", HTTP_G(send).unquoted_etag, 0) &&
-                       http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G(send).last_modified, 0)) {
-               STATUS result = http_send_ranges(&ranges, data_ptr, data_size, data_mode);
-               zend_hash_destroy(&ranges);
-               return result;
-       }
-
-       zend_hash_destroy(&ranges);
-
-       /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
-       if (cache_etag) {
-               char *etag = NULL;
-
-               if (!(etag = http_etag(data_ptr, data_size, data_mode))) {
-                       http_error(E_NOTICE, HTTP_E_PARAM, "Failed to generate ETag for data source");
-               } else {
-                       http_send_etag(etag, 32);
-                       if (http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
-                               return http_cache_exit_ex(etag, 1, 1);
+       switch (range_status)
+       {
+               case RANGE_ERR:
+               {
+                       zend_hash_destroy(&ranges);
+                       http_send_status(416);
+                       return FAILURE;
+               }
+               case RANGE_OK:
+               {
+                       /* Range Request - only send ranges if entity hasn't changed */
+                       if (    http_match_etag_ex("HTTP_IF_MATCH", HTTP_G(send).unquoted_etag, 0) &&
+                                       http_match_last_modified_ex("HTTP_IF_UNMODIFIED_SINCE", HTTP_G(send).last_modified, 0) &&
+                                       http_match_last_modified_ex("HTTP_UNLESS_MODIFIED_SINCE", HTTP_G(send).last_modified, 0)) {
+                               
+                               if (zend_hash_num_elements(&ranges) == 1) {
+                                       /* single range */
+                                       zval **range, **begin, **end;
+                                       
+                                       if (    SUCCESS == zend_hash_index_find(&ranges, 0, (void **) &range) &&
+                                                       SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void **) &begin) &&
+                                                       SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void **) &end)) {
+                                               char range_header_str[256];
+                                               size_t range_header_len;
+                                               
+                                               range_header_len = snprintf(range_header_str, lenof(range_header_str), "Content-Range: bytes %ld-%ld/%zu", Z_LVAL_PP(begin), Z_LVAL_PP(end), data_size);
+                                               http_send_status_header_ex(206, range_header_str, range_header_len, 1);
+                                               http_send_response_start(&s, Z_LVAL_PP(end)-Z_LVAL_PP(begin)+1);
+                                               http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
+                                               http_send_response_finish(&s);
+                                               zend_hash_destroy(&ranges);
+                                               return SUCCESS;
+                                       }
+                               } else {
+                                       /* multi range */
+                                       HashPosition pos;
+                                       zval **range, **begin, **end;
+                                       const char *content_type = HTTP_G(send).content_type;
+                                       char boundary_str[32], range_header_str[256];
+                                       size_t boundary_len, range_header_len;
+                                       
+                                       boundary_len = snprintf(boundary_str, lenof(boundary_str), "%lu%0.9f", (ulong) time(NULL), (float) php_combined_lcg(TSRMLS_C));
+                                       range_header_len = snprintf(range_header_str, lenof(range_header_str), "Content-Type: multipart/byteranges; boundary=%s", boundary_str);
+                                       
+                                       http_send_status_header_ex(206, range_header_str, range_header_len, 1);
+                                       http_send_response_start(&s, 0);
+                                       
+                                       if (!content_type) {
+                                               content_type = "application/x-octetstream";
+                                       }
+                                       
+                                       FOREACH_HASH_VAL(pos, &ranges, range) {
+                                               if (    SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 0, (void **) &begin) &&
+                                                               SUCCESS == zend_hash_index_find(Z_ARRVAL_PP(range), 1, (void **) &end)) {
+                                                       char preface_str[512];
+                                                       size_t preface_len;
+
+#define HTTP_RANGE_PREFACE \
+       HTTP_CRLF "--%s" \
+       HTTP_CRLF "Content-Type: %s" \
+       HTTP_CRLF "Content-Range: bytes %ld-%ld/%zu" \
+       HTTP_CRLF HTTP_CRLF
+                                                       
+                                                       preface_len = snprintf(preface_str, lenof(preface_str), HTTP_RANGE_PREFACE, boundary_str, content_type, Z_LVAL_PP(begin), Z_LVAL_PP(end), data_size);
+                                                       http_send_response_data_plain(&s, preface_str, preface_len);
+                                                       http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, Z_LVAL_PP(begin), Z_LVAL_PP(end) + 1);
+                                               }
+                                       }
+                                       
+                                       http_send_response_data_plain(&s, HTTP_CRLF "--", lenof(HTTP_CRLF "--"));
+                                       http_send_response_data_plain(&s, boundary_str, boundary_len);
+                                       http_send_response_data_plain(&s, "--", lenof("--"));
+                                       
+                                       http_send_response_finish(&s);
+                                       zend_hash_destroy(&ranges);
+                                       return SUCCESS;
+                               }
                        }
-                       efree(etag);
+               }
+               case RANGE_NO:
+               {
+                       zend_hash_destroy(&ranges);
+                       
+                       /* send 304 Not Modified if etag matches - DON'T return on ETag generation failure */
+                       if (!no_cache && cache_etag) {
+                               char *etag = NULL;
+                               
+                               if ((etag = http_etag(data_ptr, data_size, data_mode))) {
+                                       char *sent_header = NULL;
+                                       
+                                       http_send_etag_ex(etag, strlen(etag), &sent_header);
+                                       if (http_match_etag("HTTP_IF_NONE_MATCH", etag)) {
+                                               return http_exit_ex(304, sent_header, NULL, 0);
+                                       } else {
+                                               STR_FREE(sent_header);
+                                       }
+                                       efree(etag);
+                               }
+                       }
+               
+                       /* send 304 Not Modified if last modified matches */
+                       if (!no_cache && http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G(send).last_modified)) {
+                               char *sent_header = NULL;
+                               http_send_last_modified_ex(HTTP_G(send).last_modified, &sent_header);
+                               return http_exit_ex(304, sent_header, NULL, 0);
+                       }
+                       
+                       /* send full response */
+                       http_send_response_start(&s, data_size);
+                       http_send_response_data_fetch(&s, data_ptr, data_size, data_mode, 0, data_size);
+                       http_send_response_finish(&s);
+                       return SUCCESS;
                }
        }
-
-       /* send 304 Not Modified if last modified matches */
-       if (http_match_last_modified("HTTP_IF_MODIFIED_SINCE", HTTP_G(send).last_modified)) {
-               return http_cache_exit_ex(http_date(HTTP_G(send).last_modified), 0, 1);
-       }
-
-       /* send full entity */
-       return http_send_chunk(data_ptr, 0, data_size, data_mode);
+       return FAILURE;
 }
 /* }}} */
 
 /* {{{ STATUS http_send_stream(php_stream *) */
-PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_stream TSRMLS_DC)
+PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_stream, zend_bool no_cache TSRMLS_DC)
 {
        STATUS status;
        php_stream_statbuf ssb;
@@ -412,7 +436,7 @@ PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_strea
                return FAILURE;
        }
 
-       status = http_send(file, ssb.sb.st_size, SEND_RSRC);
+       status = http_send_ex(file, ssb.sb.st_size, SEND_RSRC, no_cache);
 
        if (close_stream) {
                php_stream_close(file);
@@ -422,6 +446,69 @@ PHP_HTTP_API STATUS _http_send_stream_ex(php_stream *file, zend_bool close_strea
 }
 /* }}} */
 
+/* {{{ char *http_guess_content_type(char *magic_file, long magic_mode, void *data, size_t size, http_send_mode mode) */
+PHP_HTTP_API char *_http_guess_content_type(const char *magicfile, long magicmode, void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC)
+{
+       char *ct = NULL;
+
+#ifdef HTTP_HAVE_MAGIC
+       struct magic_set *magic;
+       
+       HTTP_CHECK_OPEN_BASEDIR(magicfile, return NULL);
+       
+       /*      magic_load() fails if MAGIC_MIME is set because it 
+               cowardly adds .mime to the file name */
+       magic = magic_open(magicmode &~ MAGIC_MIME);
+       
+       if (!magic) {
+               http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid magic mode: %ld", magicmode);
+       } else if (-1 == magic_load(magic, magicfile)) {
+               http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to load magic database '%s' (%s)", magicfile, magic_error(magic));
+       } else {
+               const char *ctype = NULL;
+               
+               magic_setflags(magic, magicmode);
+               
+               switch (data_mode)
+               {
+                       case SEND_RSRC:
+                       {
+                               char *buffer;
+                               size_t b_len;
+                               
+                               b_len = php_stream_copy_to_mem(data_ptr, &buffer, 65536, 0);
+                               ctype = magic_buffer(magic, buffer, b_len);
+                               efree(buffer);
+                       }
+                       break;
+                       
+                       case SEND_DATA:
+                               ctype = magic_buffer(magic, data_ptr, data_len);
+                       break;
+                       
+                       default:
+                               HTTP_CHECK_OPEN_BASEDIR(data_ptr, magic_close(magic); return NULL);
+                               ctype = magic_file(magic, data_ptr);
+                       break;
+               }
+               
+               if (ctype) {
+                       ct = estrdup(ctype);
+               } else {
+                       http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to guess Content-Type: %s", magic_error(magic));
+               }
+       }
+       if (magic) {
+               magic_close(magic);
+       }
+#else
+       http_error(HE_WARNING, HTTP_E_RUNTIME, "Cannot guess Content-Type; libmagic not available");
+#endif
+       
+       return ct;
+}
+/* }}} */
+
 /*
  * Local variables:
  * tab-width: 4