19972016 Ericsson AB. All Rights Reserved. Licensed 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. mod_alias Joakim Grebenö 1997-10-14 2.2 mod_alias.sgml
mod_alias URL aliasing.

Erlang web server internal API for handling of, for example, interaction data exported by module mod_alias.

 default_index(ConfigDB, Path) -> NewPath Returns a new path with the default resource or file appended. ConfigDB = config_db() Path = NewPath = string()

If Path is a directory, default_index/2, it starts searching for resources or files that are specified in the config directive DirectoryIndex. If an appropriate resource or file is found, it is appended to the end of Path and then returned. Path is returned unaltered if no appropriate file is found or if Path is not a directory. config_db() is the server config file in ETS table format as described in Inets User's Guide.

 path(PathData, ConfigDB, RequestURI) -> Path Returns the file path to a URL. PathData = interaction_data() ConfigDB = config_db() RequestURI = Path = string()

path/3 returns the file Path in the RequestURI (see RFC 1945). If the interaction data {real_name,{Path,AfterPath}} has been exported by mod_alias, Path is returned. If no interaction data has been exported, ServerRoot is used to generate a file Path. config_db() and interaction_data() are as defined in Inets User's Guide.

 real_name(ConfigDB, RequestURI, Aliases) -> Ret Expands a request URI using Aliases config directives. ConfigDB = config_db() RequestURI = string() Aliases = [{FakeName,RealName}] Ret = {ShortPath,Path,AfterPath} ShortPath = Path = AfterPath = string()

real_name/3 traverses Aliases, typically extracted from ConfigDB, and matches each FakeName with RequestURI. If a match is found, FakeName is replaced with RealName in the match. The resulting path is split into two parts, ShortPath and AfterPath, as defined in httpd_util:split_path/1. Path is generated from ShortPath, that is, the result from default_index/2 with ShortPath as an argument. config_db() is the server config file in ETS table format as described in Inets User's Guide.

 real_script_name(ConfigDB, RequestURI, ScriptAliases) -> Ret Expands a request URI using ScriptAliases config directives. ConfigDB = config_db() RequestURI = string() ScriptAliases = [{FakeName,RealName}] Ret = {ShortPath,AfterPath} | not_a_script ShortPath = AfterPath = string()

real_script_name/3 traverses ScriptAliases, typically extracted from ConfigDB, and matches each FakeName with RequestURI. If a match is found, FakeName is replaced with RealName in the match. If the resulting match is not an executable script, not_a_script is returned. If it is a script, the resulting script path is in two parts, ShortPath and AfterPath, as defined in httpd_util:split_script_path/1. config_db() is the server config file in ETS table format as described in Inets User's Guide.