/* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2003 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. 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For more * information on the Apache Software Foundation, please see * . * * 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 */ };