| package atscfg |
| |
| /* |
| * 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. |
| */ |
| |
| import ( |
| "strconv" |
| "strings" |
| ) |
| |
| const ContentTypeSetDSCPDotConfig = ContentTypeTextASCII |
| const LineCommentSetDSCPDotConfig = LineCommentHash |
| |
| // SetDSCPDotConfigOpts contains settings to configure generation options. |
| type SetDSCPDotConfigOpts struct { |
| // HdrComment is the header comment to include at the beginning of the file. |
| // This should be the text desired, without comment syntax (like # or //). The file's comment syntax will be added. |
| // To omit the header comment, pass the empty string. |
| HdrComment string |
| } |
| |
| func MakeSetDSCPDotConfig( |
| fileName string, |
| server *Server, |
| opt *SetDSCPDotConfigOpts, |
| ) (Cfg, error) { |
| if opt == nil { |
| opt = &SetDSCPDotConfigOpts{} |
| } |
| warnings := []string{} |
| |
| if server.CDNName == nil { |
| return Cfg{}, makeErr(warnings, "server missing CDNName") |
| } |
| |
| // TODO verify prefix, suffix, and that it's a number? Perl doesn't. |
| dscpNumStr := fileName |
| dscpNumStr = strings.TrimPrefix(dscpNumStr, "set_dscp_") |
| dscpNumStr = strings.TrimSuffix(dscpNumStr, ".config") |
| |
| text := makeHdrComment(opt.HdrComment) |
| |
| if _, err := strconv.Atoi(dscpNumStr); err != nil { |
| // TODO warn? We don't generally warn for client errors, because it can be an attack vector. Provide a more informative error return? Return a 404? |
| text = "An error occured generating the DSCP header rewrite file." |
| dscpNumStr = "" // emulates Perl |
| } |
| |
| text += `cond %{REMAP_PSEUDO_HOOK}` + "\n" + `set-conn-dscp ` + dscpNumStr + ` [L]` + "\n" |
| |
| return Cfg{ |
| Text: text, |
| ContentType: ContentTypeSetDSCPDotConfig, |
| LineComment: LineCommentSetDSCPDotConfig, |
| Warnings: warnings, |
| }, nil |
| } |