diff options
Diffstat (limited to 'modules/generators/mod_asis.c')
| -rw-r--r-- | modules/generators/mod_asis.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/modules/generators/mod_asis.c b/modules/generators/mod_asis.c new file mode 100644 index 0000000..c2b651b --- /dev/null +++ b/modules/generators/mod_asis.c @@ -0,0 +1,128 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#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) +{ + apr_file_t *f; + 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 == APR_NOFILE) { + ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01233) + "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, APLOGNO(01234) + "file permissions deny server access: %s", r->filename); + return HTTP_FORBIDDEN; + } + + ap_scan_script_header_err_ex(r, f, NULL, APLOG_MODULE_INDEX); + 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 = "GET"; + r->method_number = M_GET; + + ap_internal_redirect_handler(location, r); + return OK; + } + + if (!r->header_only) { + conn_rec *c = r->connection; + 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, APLOGNO(01235) + "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); + apr_brigade_insert_file(bb, f, pos, r->finfo.size - pos, r->pool); + + 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, APLOGNO(01236) + "mod_asis: ap_pass_brigade failed for file %s", r->filename); + return AP_FILTER_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); +} + +AP_DECLARE_MODULE(asis) = +{ + 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 */ +}; |