Delete bundled copy of NSS and replace with README.

nss/lib/certhigh/ocspt.h

Index: nss/lib/certhigh/ocspt.h
diff --git a/nss/lib/certhigh/ocspt.h b/nss/lib/certhigh/ocspt.h
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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/. */
-
-/*
- * Public header for exported OCSP types.
- */
-
-#ifndef _OCSPT_H_
-#define _OCSPT_H_
-
-/*
- * The following are all opaque types.  If someone needs to get at
- * a field within, then we need to fix the API.  Try very hard not
- * make the type available to them.
- */
-typedef struct CERTOCSPRequestStr CERTOCSPRequest;
-typedef struct CERTOCSPResponseStr CERTOCSPResponse;
-
-/*
- * XXX I think only those first two above should need to be exported,
- * but until I know for certain I am leaving the rest of these here, too.
- */
-typedef struct CERTOCSPCertIDStr CERTOCSPCertID;
-typedef struct CERTOCSPSingleResponseStr CERTOCSPSingleResponse;
-
-/*
- * This interface is described in terms of an HttpClient which
- * supports at least a specified set of functions. (An implementer may
- * provide HttpClients with additional functionality accessible only to
- * users with a particular implementation in mind.) The basic behavior
- * is provided by defining a set of functions, listed in an
- * SEC_HttpServerFcnStruct. If the implementor of a SpecificHttpClient
- * registers his SpecificHttpClient as the default HttpClient, then his
- * functions will be called by the user of an HttpClient, such as an
- * OCSPChecker.
- *
- * The implementer of a specific HttpClient (e.g., the NSS-provided
- * DefaultHttpClient), populates an SEC_HttpClientFcnStruct, uses it to
- * register his client, and waits for his functions to be called.
- *
- * For future expandability, the SEC_HttpClientFcnStruct is defined as a
- * union, with the version field acting as a selector. The proposed
- * initial version of the structure is given following the definition
- * of the union. The HttpClientState structure is implementation-
- * dependent, and should be opaque to the user.
- */
-
-typedef void *SEC_HTTP_SERVER_SESSION;
-typedef void *SEC_HTTP_REQUEST_SESSION;
-
-/*
- * This function creates a SEC_HTTP_SERVER_SESSION object. The implementer of a
- * specific HttpClient will allocate the necessary space, when this
- * function is called, and will free it when the corresponding FreeFcn
- * is called. The SEC_HTTP_SERVER_SESSION object is passed, as an opaque object,
- * to subsequent calls.
- *
- * If the function returns SECSuccess, the returned SEC_HTTP_SERVER_SESSION
- * must be cleaned up with a call to SEC_HttpServer_FreeSession,
- * after processing is finished.
- */
-typedef SECStatus (*SEC_HttpServer_CreateSessionFcn)(
-    const char *host,
-    PRUint16 portnum,
-    SEC_HTTP_SERVER_SESSION *pSession);
-
-/*
- * This function is called to allow the implementation to attempt to keep
- * the connection alive. Depending on the underlying platform, it might
- * immediately return SECSuccess without having performed any operations.
- * (If a connection has not been kept alive, a subsequent call to
- * SEC_HttpRequest_TrySendAndReceiveFcn should reopen the connection
- * automatically.)
- *
- * If the connection uses nonblocking I/O, this function may return
- * SECWouldBlock and store a nonzero value at "pPollDesc". In that case
- * the caller may wait on the poll descriptor, and should call this function
- * again until SECSuccess (and a zero value at "pPollDesc") is obtained.
- */
-typedef SECStatus (*SEC_HttpServer_KeepAliveSessionFcn)(
-    SEC_HTTP_SERVER_SESSION session,
-    PRPollDesc **pPollDesc);
-
-/*
- * This function frees the client SEC_HTTP_SERVER_SESSION object, closes all
- * SEC_HTTP_REQUEST_SESSIONs created for that server, discards all partial results,
- * frees any memory that was allocated by the client, and invalidates any
- * response pointers that might have been returned by prior server or request
- * functions.
- */
-typedef SECStatus (*SEC_HttpServer_FreeSessionFcn)(
-    SEC_HTTP_SERVER_SESSION session);
-
-/*
- * This function creates a SEC_HTTP_REQUEST_SESSION object. The implementer of a
- * specific HttpClient will allocate the necessary space, when this
- * function is called, and will free it when the corresponding FreeFcn
- * is called. The SEC_HTTP_REQUEST_SESSION object is passed, as an opaque object,
- * to subsequent calls.
- *
- * An implementation that does not support the requested protocol variant
- * (usually "http", but could eventually allow "https") or request method
- * should return SECFailure.
- *
- * Timeout values may include the constants PR_INTERVAL_NO_TIMEOUT (wait
- * forever) or PR_INTERVAL_NO_WAIT (nonblocking I/O).
- *
- * If the function returns SECSuccess, the returned SEC_HTTP_REQUEST_SESSION
- * must be cleaned up with a call to SEC_HttpRequest_FreeSession,
- * after processing is finished.
- */
-typedef SECStatus (*SEC_HttpRequest_CreateFcn)(
-    SEC_HTTP_SERVER_SESSION session,
-    const char *http_protocol_variant, /* usually "http" */
-    const char *path_and_query_string,
-    const char *http_request_method,
-    const PRIntervalTime timeout,
-    SEC_HTTP_REQUEST_SESSION *pRequest);
-
-/*
- * This function sets data to be sent to the server for an HTTP request
- * of http_request_method == POST. If a particular implementation
- * supports it, the details for the POST request can be set by calling
- * this function, prior to activating the request with TrySendAndReceiveFcn.
- *
- * An implementation that does not support the POST method should
- * implement a SetPostDataFcn function that returns immediately.
- *
- * Setting http_content_type is optional, the parameter may
- * by NULL or the empty string.
- */
-typedef SECStatus (*SEC_HttpRequest_SetPostDataFcn)(
-    SEC_HTTP_REQUEST_SESSION request,
-    const char *http_data,
-    const PRUint32 http_data_len,
-    const char *http_content_type);
-
-/*
- * This function sets an additional HTTP protocol request header.
- * If a particular implementation supports it, one or multiple headers
- * can be added to the request by calling this function once or multiple
- * times, prior to activating the request with TryFcn.
- *
- * An implementation that does not support setting additional headers
- * should implement an AddRequestHeaderFcn function that returns immediately.
- */
-typedef SECStatus (*SEC_HttpRequest_AddHeaderFcn)(
-    SEC_HTTP_REQUEST_SESSION request,
-    const char *http_header_name,
-    const char *http_header_value);
-
-/*
- * This function initiates or continues an HTTP request. After
- * parameters have been set with the Create function and, optionally,
- * modified or enhanced with the AddParams function, this call creates
- * the socket connection and initiates the communication.
- *
- * If a timeout value of zero is specified, indicating non-blocking
- * I/O, the client creates a non-blocking socket, and returns a status
- * of SECWouldBlock and a non-NULL PRPollDesc if the operation is not
- * complete. In that case all other return parameters are undefined.
- * The caller is expected to repeat the call, possibly after using
- * PRPoll to determine that a completion has occurred, until a return
- * value of SECSuccess (and a NULL value for pPollDesc) or a return
- * value of SECFailure (indicating failure on the network level)
- * is obtained.
- *
- * http_response_data_len is both input and output parameter.
- * If a pointer to a PRUint32 is supplied, the http client is
- * expected to check the given integer value and always set an out
- * value, even on failure.
- * An input value of zero means, the caller will accept any response len.
- * A different input value indicates the maximum response value acceptable
- * to the caller.
- * If data is successfully read and the size is acceptable to the caller,
- * the function will return SECSuccess and set http_response_data_len to
- * the size of the block returned in http_response_data.
- * If the data read from the http server is larger than the acceptable
- * size, the function will return SECFailure.
- * http_response_data_len will be set to a value different from zero to
- * indicate the reason of the failure.
- * An out value of "0" means, the failure was unrelated to the
- * acceptable size.
- * An out value of "1" means, the result data is larger than the
- * accpeptable size, but the real size is not yet known to the http client
- * implementation and it stopped retrieving it,
- * Any other out value combined with a return value of SECFailure
- * will indicate the actual size of the server data.
- *
- * The caller is permitted to provide NULL values for any of the
- * http_response arguments, indicating the caller is not interested in
- * those values. If the caller does provide an address, the HttpClient
- * stores at that address a pointer to the corresponding argument, at
- * the completion of the operation.
- *
- * All returned pointers will be owned by the the HttpClient
- * implementation and will remain valid until the call to
- * SEC_HttpRequest_FreeFcn.
- */
-typedef SECStatus (*SEC_HttpRequest_TrySendAndReceiveFcn)(
-    SEC_HTTP_REQUEST_SESSION request,
-    PRPollDesc **pPollDesc,
-    PRUint16 *http_response_code,
-    const char **http_response_content_type,
-    const char **http_response_headers,
-    const char **http_response_data,
-    PRUint32 *http_response_data_len);
-
-/*
- * Calling CancelFcn asks for premature termination of the request.
- *
- * Future calls to SEC_HttpRequest_TrySendAndReceive should
- * by avoided, but in this case the HttpClient implementation
- * is expected to return immediately with SECFailure.
- *
- * After calling CancelFcn, a separate call to SEC_HttpRequest_FreeFcn
- * is still necessary to free resources.
- */
-typedef SECStatus (*SEC_HttpRequest_CancelFcn)(
-    SEC_HTTP_REQUEST_SESSION request);
-
-/*
- * Before calling this function, it must be assured the request
- * has been completed, i.e. either SEC_HttpRequest_TrySendAndReceiveFcn has
- * returned SECSuccess, or the request has been canceled with
- * a call to SEC_HttpRequest_CancelFcn.
- *
- * This function frees the client state object, closes all sockets,
- * discards all partial results, frees any memory that was allocated
- * by the client, and invalidates all response pointers that might
- * have been returned by SEC_HttpRequest_TrySendAndReceiveFcn
- */
-typedef SECStatus (*SEC_HttpRequest_FreeFcn)(
-    SEC_HTTP_REQUEST_SESSION request);
-
-typedef struct SEC_HttpClientFcnV1Struct {
-    SEC_HttpServer_CreateSessionFcn createSessionFcn;
-    SEC_HttpServer_KeepAliveSessionFcn keepAliveSessionFcn;
-    SEC_HttpServer_FreeSessionFcn freeSessionFcn;
-    SEC_HttpRequest_CreateFcn createFcn;
-    SEC_HttpRequest_SetPostDataFcn setPostDataFcn;
-    SEC_HttpRequest_AddHeaderFcn addHeaderFcn;
-    SEC_HttpRequest_TrySendAndReceiveFcn trySendAndReceiveFcn;
-    SEC_HttpRequest_CancelFcn cancelFcn;
-    SEC_HttpRequest_FreeFcn freeFcn;
-} SEC_HttpClientFcnV1;
-
-typedef struct SEC_HttpClientFcnStruct {
-    PRInt16 version;
-    union {
-        SEC_HttpClientFcnV1 ftable1;
-        /* SEC_HttpClientFcnV2 ftable2; */
-        /* ...                      */
-    } fcnTable;
-} SEC_HttpClientFcn;
-
-/*
- * ocspMode_FailureIsVerificationFailure:
- * This is the classic behaviour of NSS.
- * Any OCSP failure is a verification failure (classic mode, default).
- * Without a good response, OCSP networking will be retried each time
- * it is required for verifying a cert.
- *
- * ocspMode_FailureIsNotAVerificationFailure:
- * If we fail to obtain a valid OCSP response, consider the
- * cert as good.
- * Failed OCSP attempts might get cached and not retried until
- * minimumSecondsToNextFetchAttempt.
- * If we are able to obtain a valid response, the cert
- * will be considered good, if either status is "good"
- * or the cert was not yet revoked at verification time.
- *
- * Additional failure modes might be added in the future.
- */
-typedef enum {
-    ocspMode_FailureIsVerificationFailure = 0,
-    ocspMode_FailureIsNotAVerificationFailure = 1
-} SEC_OcspFailureMode;
-
-/*
- * A ResponderID identifies the responder -- or more correctly, the
- * signer of the response.  The ASN.1 definition of a ResponderID is:
- *
- * ResponderID	::=	CHOICE {
- *	byName			[1] EXPLICIT Name,
- *	byKey			[2] EXPLICIT KeyHash }
- *
- * Because it is CHOICE, the type of identification used and the
- * identification itself are actually encoded together.  To represent
- * this same information internally, we explicitly define a type and
- * save it, along with the value, into a data structure.
- */
-
-typedef enum {
-    ocspResponderID_other = -1, /* unknown kind of responderID */
-    ocspResponderID_byName = 1,
-    ocspResponderID_byKey = 2
-} CERTOCSPResponderIDType;
-
-#endif /* _OCSPT_H_ */