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inets
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Version 5.3

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# mod_alias

### MODULE

mod_alias

### MODULE SUMMARY

URL aliasing.

### DESCRIPTION

Erlang Webserver Server internal API for handling of things such as interaction data exported by the mod_alias module.

### EXPORTS

default_index(ConfigDB, Path) -> NewPath

Types:

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 Users Guide..

path(PathData, ConfigDB, RequestURI) -> Path

Types:

PathData = interaction_data()
ConfigDB = config_db()
RequestURI = Path = string()

path/3 returns the actual 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 Users Guide.

real_name(ConfigDB, RequestURI, Aliases) -> Ret

Types:

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, that is 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 Guide..

real_script_name(ConfigDB,RequestURI,ScriptAliases) -> Ret

Types:

ConfigDB = config_db()
RequestURI = string()
ScriptAliases = [{FakeName,RealName}]
Ret = {ShortPath,AfterPath} | not_a_script
ShortPath = AfterPath = string()

real_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, that is 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 Users Guide..