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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIInputStream;
interface nsIFile;
interface nsIOutputStream;
interface nsISimpleEnumerator;
interface nsIHttpServer;
interface nsIHttpServerStoppedCallback;
interface nsIHttpRequestHandler;
interface nsIHttpRequest;
interface nsIHttpResponse;
interface nsIHttpServerIdentity;
/**
* An interface which represents an HTTP server.
*/
[scriptable, uuid(cea8812e-faa6-4013-9396-f9936cbb74ec)]
interface nsIHttpServer : nsISupports
{
/**
* Starts up this server, listening upon the given port.
*
* @param port
* the port upon which listening should happen, or -1 if no specific port is
* desired
* @throws NS_ERROR_ALREADY_INITIALIZED
* if this server is already started
* @throws NS_ERROR_NOT_AVAILABLE
* if the server is not started and cannot be started on the desired port
* (perhaps because the port is already in use or because the process does
* not have privileges to do so)
* @note
* Behavior is undefined if this method is called after stop() has been
* called on this but before the provided callback function has been
* called.
*/
void start(in long port);
/**
* Shuts down this server if it is running (including the period of time after
* stop() has been called but before the provided callback has been called).
*
* @param callback
* an asynchronous callback used to notify the user when this server is
* stopped and all pending requests have been fully served
* @throws NS_ERROR_NULL_POINTER
* if callback is null
* @throws NS_ERROR_UNEXPECTED
* if this server is not running
*/
void stop(in nsIHttpServerStoppedCallback callback);
/**
* Associates the local file represented by the string file with all requests
* which match request.
*
* @param path
* the path which is to be mapped to the given file; must begin with "/" and
* be a valid URI path (i.e., no query string, hash reference, etc.)
* @param file
* the file to serve for the given path, or null to remove any mapping that
* might exist; this file must exist for the lifetime of the server
* @param handler
* an optional object which can be used to handle any further changes.
*/
void registerFile(in string path,
in nsIFile file,
[optional] in nsIHttpRequestHandler handler);
/**
* Registers a custom path handler.
*
* @param path
* the path on the server (beginning with a "/") which is to be handled by
* handler; this path must not include a query string or hash component; it
* also should usually be canonicalized, since most browsers will do so
* before sending otherwise-matching requests
* @param handler
* an object which will handle any requests for the given path, or null to
* remove any existing handler; if while the server is running the handler
* throws an exception while responding to a request, an HTTP 500 response
* will be returned
* @throws NS_ERROR_INVALID_ARG
* if path does not begin with a "/"
*/
void registerPathHandler(in string path, in nsIHttpRequestHandler handler);
/**
* Registers a custom prefix handler.
*
* @param prefix
* the path on the server (beginning and ending with "/") which is to be
* handled by handler; this path must not include a query string or hash
* component. All requests that start with this prefix will be directed to
* the given handler.
* @param handler
* an object which will handle any requests for the given path, or null to
* remove any existing handler; if while the server is running the handler
* throws an exception while responding to a request, an HTTP 500 response
* will be returned
* @throws NS_ERROR_INVALID_ARG
* if path does not begin with a "/" or does not end with a "/"
*/
void registerPrefixHandler(in string prefix, in nsIHttpRequestHandler handler);
/**
* Registers a custom error page handler.
*
* @param code
* the error code which is to be handled by handler
* @param handler
* an object which will handle any requests which generate the given status
* code, or null to remove any existing handler. If the handler throws an
* exception during server operation, fallback is to the genericized error
* handler (the x00 version), then to 500, using a user-defined error
* handler if one exists or the server default handler otherwise. Fallback
* will never occur from a user-provided handler that throws to the same
* handler as provided by the server, e.g. a throwing user 404 falls back to
* 400, not a server-provided 404 that might not throw.
* @note
* If the error handler handles HTTP 500 and throws, behavior is undefined.
*/
void registerErrorHandler(in unsigned long code, in nsIHttpRequestHandler handler);
/**
* Maps all requests to paths beneath path to the corresponding file beneath
* dir.
*
* @param path
* the absolute path on the server against which requests will be served
* from dir (e.g., "/", "/foo/", etc.); must begin and end with a forward
* slash
* @param dir
* the directory to be used to serve all requests for paths underneath path
* (except those further overridden by another, deeper path registered with
* another directory); if null, any current mapping for the given path is
* removed
* @throws NS_ERROR_INVALID_ARG
* if dir is non-null and does not exist or is not a directory, or if path
* does not begin with and end with a forward slash
*/
void registerDirectory(in string path, in nsIFile dir);
/**
* Associates files with the given extension with the given Content-Type when
* served by this server, in the absence of any file-specific information
* about the desired Content-Type. If type is empty, removes any extant
* mapping, if one is present.
*
* @throws NS_ERROR_INVALID_ARG
* if the given type is not a valid header field value, i.e. if it doesn't
* match the field-value production in RFC 2616
* @note
* No syntax checking is done of the given type, beyond ensuring that it is
* a valid header field value. Behavior when not given a string matching
* the media-type production in RFC 2616 section 3.7 is undefined.
* Implementations may choose to define specific behavior for types which do
* not match the production, such as for CGI functionality.
* @note
* Implementations MAY treat type as a trusted argument; users who fail to
* generate this string from trusted data risk security vulnerabilities.
*/
void registerContentType(in string extension, in string type);
/**
* Sets the handler used to display the contents of a directory if
* the directory contains no index page.
*
* @param handler
* an object which will handle any requests for directories which
* do not contain index pages, or null to reset to the default
* index handler; if while the server is running the handler
* throws an exception while responding to a request, an HTTP 500
* response will be returned. An nsIFile corresponding to the
* directory is available from the metadata object passed to the
* handler, under the key "directory".
*/
void setIndexHandler(in nsIHttpRequestHandler handler);
/** Represents the locations at which this server is reachable. */
readonly attribute nsIHttpServerIdentity identity;
/**
* Retrieves the string associated with the given key in this, for the given
* path's saved state. All keys are initially associated with the empty
* string.
*/
AString getState(in AString path, in AString key);
/**
* Sets the string associated with the given key in this, for the given path's
* saved state.
*/
void setState(in AString path, in AString key, in AString value);
/**
* Retrieves the string associated with the given key in this, in
* entire-server saved state. All keys are initially associated with the
* empty string.
*/
AString getSharedState(in AString key);
/**
* Sets the string associated with the given key in this, in entire-server
* saved state.
*/
void setSharedState(in AString key, in AString value);
/**
* Retrieves the object associated with the given key in this in
* object-valued saved state. All keys are initially associated with null.
*/
nsISupports getObjectState(in AString key);
/**
* Sets the object associated with the given key in this in object-valued
* saved state. The value may be null.
*/
void setObjectState(in AString key, in nsISupports value);
};
/**
* An interface through which a notification of the complete stopping (socket
* closure, in-flight requests all fully served and responded to) of an HTTP
* server may be received.
*/
[scriptable, function, uuid(925a6d33-9937-4c63-abe1-a1c56a986455)]
interface nsIHttpServerStoppedCallback : nsISupports
{
/** Called when the corresponding server has been fully stopped. */
void onStopped();
};
/**
* Represents a set of names for a server, one of which is the primary name for
* the server and the rest of which are secondary. By default every server will
* contain ("http", "localhost", port) and ("http", "127.0.0.1", port) as names,
* where port is what was provided to the corresponding server when started;
* however, except for their being removed when the corresponding server stops
* they have no special importance.
*/
[scriptable, uuid(a89de175-ae8e-4c46-91a5-0dba99bbd284)]
interface nsIHttpServerIdentity : nsISupports
{
/**
* The primary scheme at which the corresponding server is located, defaulting
* to 'http'. This name will be the value of nsIHttpRequest.scheme for
* HTTP/1.0 requests.
*
* This value is always set when the corresponding server is running. If the
* server is not running, this value is set only if it has been set to a
* non-default name using setPrimary. In this case reading this value will
* throw NS_ERROR_NOT_INITIALIZED.
*/
readonly attribute string primaryScheme;
/**
* The primary name by which the corresponding server is known, defaulting to
* 'localhost'. This name will be the value of nsIHttpRequest.host for
* HTTP/1.0 requests.
*
* This value is always set when the corresponding server is running. If the
* server is not running, this value is set only if it has been set to a
* non-default name using setPrimary. In this case reading this value will
* throw NS_ERROR_NOT_INITIALIZED.
*/
readonly attribute string primaryHost;
/**
* The primary port on which the corresponding server runs, defaulting to the
* associated server's port. This name will be the value of
* nsIHttpRequest.port for HTTP/1.0 requests.
*
* This value is always set when the corresponding server is running. If the
* server is not running, this value is set only if it has been set to a
* non-default name using setPrimary. In this case reading this value will
* throw NS_ERROR_NOT_INITIALIZED.
*/
readonly attribute long primaryPort;
/**
* Adds a location at which this server may be accessed.
*
* @throws NS_ERROR_ILLEGAL_VALUE
* if scheme or host do not match the scheme or host productions imported
* into RFC 2616 from RFC 2396, or if port is not a valid port number
*/
void add(in string scheme, in string host, in long port);
/**
* Removes this name from the list of names by which the corresponding server
* is known. If name is also the primary name for the server, the primary
* name reverts to 'http://127.0.0.1' with the associated server's port.
*
* @throws NS_ERROR_ILLEGAL_VALUE
* if scheme or host do not match the scheme or host productions imported
* into RFC 2616 from RFC 2396, or if port is not a valid port number
* @returns
* true if the given name was a name for this server, false otherwise
*/
boolean remove(in string scheme, in string host, in long port);
/**
* Returns true if the given name is in this, false otherwise.
*
* @throws NS_ERROR_ILLEGAL_VALUE
* if scheme or host do not match the scheme or host productions imported
* into RFC 2616 from RFC 2396, or if port is not a valid port number
*/
boolean has(in string scheme, in string host, in long port);
/**
* Returns the scheme for the name with the given host and port, if one is
* present; otherwise returns the empty string.
*
* @throws NS_ERROR_ILLEGAL_VALUE
* if host does not match the host production imported into RFC 2616 from
* RFC 2396, or if port is not a valid port number
*/
string getScheme(in string host, in long port);
/**
* Designates the given name as the primary name in this and adds it to this
* if it is not already present.
*
* @throws NS_ERROR_ILLEGAL_VALUE
* if scheme or host do not match the scheme or host productions imported
* into RFC 2616 from RFC 2396, or if port is not a valid port number
*/
void setPrimary(in string scheme, in string host, in long port);
};
/**
* A representation of a handler for HTTP requests. The handler is used by
* calling its .handle method with data for an incoming request; it is the
* handler's job to use that data as it sees fit to make the desired response.
*
* @note
* This interface uses the [function] attribute, so you can pass a
* script-defined function with the functionality of handle() to any
* method which has a nsIHttpRequestHandler parameter, instead of wrapping
* it in an otherwise empty object.
*/
[scriptable, function, uuid(2bbb4db7-d285-42b3-a3ce-142b8cc7e139)]
interface nsIHttpRequestHandler : nsISupports
{
/**
* Processes an HTTP request and initializes the passed-in response to reflect
* the correct HTTP response.
*
* If this method throws an exception, externally observable behavior depends
* upon whether is being processed asynchronously. If such is the case, the
* output is some prefix (perhaps all, perhaps none, perhaps only some) of the
* data which would have been sent if, instead, the response had been finished
* at that point. If no data has been written, the response has not had
* seizePower() called on it, and it is not being asynchronously created, an
* error handler will be invoked (usually 500 unless otherwise specified).
*
* Some uses of nsIHttpRequestHandler may require this method to never throw
* an exception; in the general case, however, this method may throw an
* exception (causing an HTTP 500 response to occur, if the above conditions
* are met).
*
* @param request
* data representing an HTTP request
* @param response
* an initially-empty response which must be modified to reflect the data
* which should be sent as the response to the request described by metadata
*/
void handle(in nsIHttpRequest request, in nsIHttpResponse response);
};
/**
* A representation of the data included in an HTTP request.
*/
[scriptable, uuid(978cf30e-ad73-42ee-8f22-fe0aaf1bf5d2)]
interface nsIHttpRequest : nsISupports
{
/**
* The request type for this request (see RFC 2616, section 5.1.1).
*/
readonly attribute string method;
/**
* The scheme of the requested path, usually 'http' but might possibly be
* 'https' if some form of SSL tunneling is in use. Note that this value
* cannot be accurately determined unless the incoming request used the
* absolute-path form of the request line; it defaults to 'http', so only
* if it is something else can you be entirely certain it's correct.
*/
readonly attribute string scheme;
/**
* The host of the data being requested (e.g. "localhost" for the
* http://localhost:8080/file resource). Note that the relevant port on the
* host is specified in this.port. This value is in the ASCII character
* encoding.
*/
readonly attribute string host;
/**
* The port on the server on which the request was received.
*/
readonly attribute unsigned long port;
/**
* The requested path, without any query string (e.g. "/dir/file.txt"). It is
* guaranteed to begin with a "/". The individual components in this string
* are URL-encoded.
*/
readonly attribute string path;
/**
* The URL-encoded query string associated with this request, not including
* the initial "?", or "" if no query string was present.
*/
readonly attribute string queryString;
/**
* A string containing the HTTP version of the request (i.e., "1.1"). Leading
* zeros for either component of the version will be omitted. (In other
* words, if the request contains the version "1.01", this attribute will be
* "1.1"; see RFC 2616, section 3.1.)
*/
readonly attribute string httpVersion;
/**
* Returns the value for the header in this request specified by fieldName.
*
* @param fieldName
* the name of the field whose value is to be gotten; note that since HTTP
* header field names are case-insensitive, this method produces equivalent
* results for "HeAdER" and "hEADer" as fieldName
* @returns
* The result is a string containing the individual values of the header,
* usually separated with a comma. The headers WWW-Authenticate,
* Proxy-Authenticate, and Set-Cookie violate the HTTP specification,
* however, and for these headers only the separator string is '\n'.
*
* @throws NS_ERROR_INVALID_ARG
* if fieldName does not constitute a valid header field name
* @throws NS_ERROR_NOT_AVAILABLE
* if the given header does not exist in this
*/
string getHeader(in string fieldName);
/**
* Returns true if a header with the given field name exists in this, false
* otherwise.
*
* @param fieldName
* the field name whose existence is to be determined in this; note that
* since HTTP header field names are case-insensitive, this method produces
* equivalent results for "HeAdER" and "hEADer" as fieldName
* @throws NS_ERROR_INVALID_ARG
* if fieldName does not constitute a valid header field name
*/
boolean hasHeader(in string fieldName);
/**
* An nsISimpleEnumerator of nsISupportsStrings over the names of the headers
* in this request. The header field names in the enumerator may not
* necessarily have the same case as they do in the request itself.
*/
readonly attribute nsISimpleEnumerator headers;
/**
* A stream from which data appearing in the body of this request can be read.
*/
readonly attribute nsIInputStream bodyInputStream;
};
/**
* Represents an HTTP response, as described in RFC 2616, section 6.
*/
[scriptable, uuid(1acd16c2-dc59-42fa-9160-4f26c43c1c21)]
interface nsIHttpResponse : nsISupports
{
/**
* Sets the status line for this. If this method is never called on this, the
* status line defaults to "HTTP/", followed by the server's default HTTP
* version (e.g. "1.1"), followed by " 200 OK".
*
* @param httpVersion
* the HTTP version of this, as a string (e.g. "1.1"); if null, the server
* default is used
* @param code
* the numeric HTTP status code for this
* @param description
* a human-readable description of code; may be null if no description is
* desired
* @throws NS_ERROR_INVALID_ARG
* if httpVersion is not a valid HTTP version string, statusCode is greater
* than 999, or description contains invalid characters
* @throws NS_ERROR_NOT_AVAILABLE
* if this response is being processed asynchronously and data has been
* written to this response's body, or if seizePower() has been called on
* this
*/
void setStatusLine(in string httpVersion,
in unsigned short statusCode,
in string description);
/**
* Sets the specified header in this.
*
* @param name
* the name of the header; must match the field-name production per RFC 2616
* @param value
* the value of the header; must match the field-value production per RFC
* 2616
* @param merge
* when true, if the given header already exists in this, the values passed
* to this function will be merged into the existing header, per RFC 2616
* header semantics (except for the Set-Cookie, WWW-Authenticate, and
* Proxy-Authenticate headers, which will treat each such merged header as
* an additional instance of the header, for real-world compatibility
* reasons); when false, replaces any existing header of the given name (if
* any exists) with a new header with the specified value
* @throws NS_ERROR_INVALID_ARG
* if name or value is not a valid header component
* @throws NS_ERROR_NOT_AVAILABLE
* if this response is being processed asynchronously and data has been
* written to this response's body, or if seizePower() has been called on
* this
*/
void setHeader(in string name, in string value, in boolean merge);
/**
* This is used for testing our header handling, so header will be sent out
* without transformation. There can be multiple headers.
*/
void setHeaderNoCheck(in string name, in string value);
/**
* A stream to which data appearing in the body of this response (or in the
* totality of the response if seizePower() is called) should be written.
* After this response has been designated as being processed asynchronously,
* or after seizePower() has been called on this, subsequent writes will no
* longer be buffered and will be written to the underlying transport without
* delaying until the entire response is constructed. Write-through may or
* may not be synchronous in the implementation, and in any case particular
* behavior may not be observable to the HTTP client as intermediate buffers
* both in the server socket and in the client may delay written data; be
* prepared for delays at any time.
*
* @throws NS_ERROR_NOT_AVAILABLE
* if accessed after this response is fully constructed
*/
readonly attribute nsIOutputStream bodyOutputStream;
/**
* Writes a string to the response's output stream. This method is merely a
* convenient shorthand for writing the same data to bodyOutputStream
* directly.
*
* @note
* This method is only guaranteed to work with ASCII data.
* @throws NS_ERROR_NOT_AVAILABLE
* if called after this response has been fully constructed
*/
void write(in string data);
/**
* Signals that this response is being constructed asynchronously. Requests
* are typically completely constructed during nsIHttpRequestHandler.handle;
* however, responses which require significant resources (time, memory,
* processing) to construct can be created and sent incrementally by calling
* this method during the call to nsIHttpRequestHandler.handle. This method
* only has this effect when called during nsIHttpRequestHandler.handle;
* behavior is undefined if it is called at a later time. It may be called
* multiple times with no ill effect, so long as each call occurs before
* finish() is called.
*
* @throws NS_ERROR_UNEXPECTED
* if not initially called within a nsIHttpRequestHandler.handle call or if
* called after this response has been finished
* @throws NS_ERROR_NOT_AVAILABLE
* if seizePower() has been called on this
*/
void processAsync();
/**
* Seizes complete control of this response (and its connection) from the
* server, allowing raw and unfettered access to data being sent in the HTTP
* response. Once this method has been called the only property which may be
* accessed without an exception being thrown is bodyOutputStream, and the
* only methods which may be accessed without an exception being thrown are
* write(), finish(), and seizePower() (which may be called multiple times
* without ill effect so long as all calls are otherwise allowed).
*
* After a successful call, all data subsequently written to the body of this
* response is written directly to the corresponding connection. (Previously-
* written data is silently discarded.) No status line or headers are sent
* before doing so; if the response handler wishes to write such data, it must
* do so manually. Data generation completes only when finish() is called; it
* is not enough to simply call close() on bodyOutputStream.
*
* @throws NS_ERROR_NOT_AVAILABLE
* if processAsync() has been called on this
* @throws NS_ERROR_UNEXPECTED
* if finish() has been called on this
*/
void seizePower();
/**
* Signals that construction of this response is complete and that it may be
* sent over the network to the client, or if seizePower() has been called
* signals that all data has been written and that the underlying connection
* may be closed. This method may only be called after processAsync() or
* seizePower() has been called. This method is idempotent.
*
* @throws NS_ERROR_UNEXPECTED
* if processAsync() or seizePower() has not already been properly called
*/
void finish();
};