From: Fredrik Tolf Date: Sat, 11 Jan 2014 09:16:26 +0000 (+0100) Subject: doc: Updated dirplex 404 handling. X-Git-Url: http://git.dolda2000.com/gitweb/?a=commitdiff_plain;h=5ff7def2adbff86a0e2d69f8f82f0b07882ca782;p=ashd.git doc: Updated dirplex 404 handling. --- diff --git a/doc/dirplex.doc b/doc/dirplex.doc index c38ff4a..048548a 100644 --- a/doc/dirplex.doc +++ b/doc/dirplex.doc @@ -177,7 +177,7 @@ The following configuration directives are recognized: program will be started in the same directory as the `.htrc` file itself. -*match* [*directory*]:: +*match* ['TYPE']:: Specifies a filename pattern-matching rule. The pattern-matching procedure and the follow-up lines accepted by @@ -209,10 +209,13 @@ ignored. To match a file, any *match* stanzas specified by any `.htrc` file or in the global configuration files are searched in order of their -"distance" (see CONFIGURATION above) from the actual file. If it is a -directory which is being considered, only *match* stanzas with the -*directory* parameter are considered; otherwise, if it is a file, only -*match* stanzas without the *directory* parameter are considered. +"distance" (see CONFIGURATION above) from the actual file. Which +*match* stanzas are considered depends on the type of the file being +matched: if an ordinary file is being matched, only *match* stanzas +without any 'TYPE' parameter are considered, while if it is a +directory, only those with type 'TYPE' parameter specified as +*directory* are considered. 'TYPE' can also take the value *notfound*, +described below under 404 RESPONSES. A *match* stanza must contain at least one follow-up line specifying match rules. All rules must match for the stanza as a whole to match. @@ -296,11 +299,23 @@ A HTTP 404 response is sent to the client if * The mapping procedure results in a file which is not matched by any *match* stanza. -By default, *dirplex* will send a built-in 404 response, but any -`.htrc` file or global configuration may define a request handler -named `.notfound` to customize the behavior. Note that, unlike -successful requests, such a handler will not be passed the -`X-Ash-File` header. +By default, *dirplex* will send a built-in 404 response, but there are +two ways to customize the response: + +First, *match* stanzas with the type *notfound* will be matched +against any request that would result in a 404 error. The filename for +such matching is that of the last succesfully found component, which +may be a directory, for example in case a name component could not be +found in the real filesystem; or a file, for example in case a file +was found, but not matched by any *match* stanzas. + +Otherwise, any request that would result in a 404 response but is +matched by no *notfound* stanza is instead passed to a default handler +named `.notfound`, which is handled internally in *dirplex* by +default, but may be overridden just as any other handler may be in a +`.htrc` file or by global configuration. Note, however, that any +request not matched by a *notfound* stanza will not have the +`X-Ash-File` header added to it. The built-in `.notfound` handler can also be used in *match* or *capture* stanzas (for example, to restrict access to certain files or