| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000-2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * Portions of this software are based upon public domain software |
| * originally written at the National Center for Supercomputing Applications, |
| * University of Illinois, Urbana-Champaign. |
| */ |
| |
| #include "apr_strings.h" |
| #include "ap_config.h" |
| #include "httpd.h" |
| #include "http_config.h" |
| #include "http_protocol.h" |
| #include "http_log.h" |
| #include "util_script.h" |
| #include "http_main.h" |
| #include "http_request.h" |
| |
| #include "mod_core.h" |
| |
| #define ASIS_MAGIC_TYPE "httpd/send-as-is" |
| |
| static int asis_handler(request_rec *r) |
| { |
| conn_rec *c = r->connection; |
| apr_file_t *f = NULL; |
| apr_status_t rv; |
| const char *location; |
| |
| if(strcmp(r->handler,ASIS_MAGIC_TYPE) && strcmp(r->handler,"send-as-is")) |
| return DECLINED; |
| |
| r->allowed |= (AP_METHOD_BIT << M_GET); |
| if (r->method_number != M_GET) |
| return DECLINED; |
| if (r->finfo.filetype == 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, |
| "File does not exist: %s", r->filename); |
| return HTTP_NOT_FOUND; |
| } |
| |
| if ((rv = apr_file_open(&f, r->filename, APR_READ, |
| APR_OS_DEFAULT, r->pool)) != APR_SUCCESS) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, |
| "file permissions deny server access: %s", r->filename); |
| return HTTP_FORBIDDEN; |
| } |
| |
| ap_scan_script_header_err(r, f, NULL); |
| location = apr_table_get(r->headers_out, "Location"); |
| |
| if (location && location[0] == '/' && |
| ((r->status == HTTP_OK) || ap_is_HTTP_REDIRECT(r->status))) { |
| |
| apr_file_close(f); |
| |
| /* Internal redirect -- fake-up a pseudo-request */ |
| r->status = HTTP_OK; |
| |
| /* This redirect needs to be a GET no matter what the original |
| * method was. |
| */ |
| r->method = apr_pstrdup(r->pool, "GET"); |
| r->method_number = M_GET; |
| |
| ap_internal_redirect_handler(location, r); |
| return OK; |
| } |
| |
| if (!r->header_only) { |
| apr_bucket_brigade *bb; |
| apr_bucket *b; |
| apr_off_t pos = 0; |
| |
| rv = apr_file_seek(f, APR_CUR, &pos); |
| if (rv != APR_SUCCESS) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, |
| "mod_asis: failed to find end-of-headers position " |
| "for %s", r->filename); |
| apr_file_close(f); |
| return HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| bb = apr_brigade_create(r->pool, c->bucket_alloc); |
| #if APR_HAS_LARGE_FILES |
| if (r->finfo.size - pos > AP_MAX_SENDFILE) { |
| /* APR_HAS_LARGE_FILES issue; must split into mutiple buckets, |
| * no greater than MAX(apr_size_t), and more granular than that |
| * in case the brigade code/filters attempt to read it directly. |
| */ |
| apr_off_t fsize = r->finfo.size - pos; |
| b = apr_bucket_file_create(f, pos, AP_MAX_SENDFILE, |
| r->pool, c->bucket_alloc); |
| while (fsize > AP_MAX_SENDFILE) { |
| APR_BRIGADE_INSERT_TAIL(bb, b); |
| apr_bucket_copy(b, &b); |
| b->start += AP_MAX_SENDFILE; |
| fsize -= AP_MAX_SENDFILE; |
| } |
| b->length = (apr_size_t)fsize; /* Resize just the last bucket */ |
| } |
| else |
| #endif |
| b = apr_bucket_file_create(f, pos, (apr_size_t) (r->finfo.size - pos), |
| r->pool, c->bucket_alloc); |
| APR_BRIGADE_INSERT_TAIL(bb, b); |
| b = apr_bucket_eos_create(c->bucket_alloc); |
| APR_BRIGADE_INSERT_TAIL(bb, b); |
| rv = ap_pass_brigade(r->output_filters, bb); |
| if (rv != APR_SUCCESS) { |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, |
| "mod_asis: ap_pass_brigade failed for file %s", r->filename); |
| return HTTP_INTERNAL_SERVER_ERROR; |
| } |
| } |
| else { |
| apr_file_close(f); |
| } |
| |
| return OK; |
| } |
| |
| static void register_hooks(apr_pool_t *p) |
| { |
| ap_hook_handler(asis_handler,NULL,NULL,APR_HOOK_MIDDLE); |
| } |
| |
| module AP_MODULE_DECLARE_DATA asis_module = |
| { |
| STANDARD20_MODULE_STUFF, |
| NULL, /* create per-directory config structure */ |
| NULL, /* merge per-directory config structures */ |
| NULL, /* create per-server config structure */ |
| NULL, /* merge per-server config structures */ |
| NULL, /* command apr_table_t */ |
| register_hooks /* register hooks */ |
| }; |
