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414 строки
13 KiB
C
414 строки
13 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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#include "hashconn.h"
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#include "dataconn.h"
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#include "serv.h"
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#include "servimpl.h"
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#include "ssmerrs.h"
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#include "newproto.h"
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#include "messages.h"
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#include "collectn.h"
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/* Shorthand macros for inherited classes */
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#define SSMRESOURCE(sslconn) (&(sslconn)->super.super.super)
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#define SSMCONNECTION(sslconn) (&(sslconn)->super.super)
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#define SSMDATACONNECTION(sslconn) (&(sslconn)->super)
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void SSMHashConnection_ServiceThread(void * arg);
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SSMStatus SSMHashConnection_StartHashing(SSMHashConnection *conn);
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SSMStatus SSMHashConnection_FinishHashing(SSMHashConnection *conn);
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SSMStatus SSMHashConnection_Create(void *arg, SSMControlConnection * connection,
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SSMResource **res)
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{
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SSMStatus rv = PR_SUCCESS;
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SSMHashConnection *conn;
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*res = NULL; /* in case we fail */
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conn = (SSMHashConnection *) PR_CALLOC(sizeof(SSMHashConnection));
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if (!conn) goto loser;
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SSMRESOURCE(conn)->m_connection = connection;
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rv = SSMHashConnection_Init(conn, (SSMHashInitializer *) arg,
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SSM_RESTYPE_HASH_CONNECTION);
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if (rv != PR_SUCCESS) goto loser;
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SSMHashConnection_Invariant(conn);
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*res = SSMRESOURCE(conn);
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return PR_SUCCESS;
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loser:
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if (rv == PR_SUCCESS) rv = PR_FAILURE;
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if (conn)
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{
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SSM_ShutdownResource(SSMRESOURCE(conn), rv); /* force destroy */
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SSM_FreeResource(SSMRESOURCE(conn));
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}
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return rv;
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}
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SSMStatus SSMHashConnection_Init(SSMHashConnection *conn,
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SSMHashInitializer *init,
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SSMResourceType type)
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{
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SSMStatus rv = PR_SUCCESS;
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SSMControlConnection *parent = init->m_parent;
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rv = SSMDataConnection_Init(SSMDATACONNECTION(conn), parent, type);
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if (rv != PR_SUCCESS) goto loser;
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/* Add the hash type. */
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conn->m_type = init->m_hashtype;
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/* Verify that the hash type is something we can work with. */
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SSMHashConnection_StartHashing(conn);
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rv = (conn->m_context) ? PR_SUCCESS : PR_INVALID_ARGUMENT_ERROR;
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SSMHashConnection_FinishHashing(conn);
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conn->m_resultLen = 0;
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if (rv != PR_SUCCESS) goto loser;
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/* Spin the service thread to set up the SSL connection. */
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SSM_DEBUG("Creating hash service thread.\n");
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SSM_GetResourceReference(SSMRESOURCE(conn));
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SSMDATACONNECTION(conn)->m_dataServiceThread =
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SSM_CreateThread(SSMRESOURCE(conn),
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SSMHashConnection_ServiceThread);
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if (SSMDATACONNECTION(conn)->m_dataServiceThread == NULL) {
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goto loser;
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}
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return PR_SUCCESS;
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loser:
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if (rv == PR_SUCCESS) rv = PR_FAILURE;
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return rv;
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}
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SSMStatus
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SSMHashConnection_FinishHashing(SSMHashConnection *conn)
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{
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SSMStatus rv = SSM_SUCCESS;
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SSM_LockResource(SSMRESOURCE(conn));
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/* If we have a context, end the hash. */
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if (conn->m_context)
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{
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HASH_End(conn->m_context, conn->m_result, &conn->m_resultLen,
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SSM_HASH_RESULT_LEN);
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if (conn->m_resultLen == 0)
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rv = SSM_FAILURE;
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HASH_Destroy(conn->m_context);
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conn->m_context = NULL;
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}
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SSM_UnlockResource(SSMRESOURCE(conn));
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return rv;
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}
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SSMStatus
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SSMHashConnection_StartHashing(SSMHashConnection *conn)
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{
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PR_ASSERT(conn->m_context == NULL);
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SSM_LockResource(SSMRESOURCE(conn));
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if (conn->m_context)
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SSMHashConnection_FinishHashing(conn);
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conn->m_resultLen = 0;
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conn->m_context = HASH_Create(conn->m_type);
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SSM_UnlockResource(SSMRESOURCE(conn));
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return (conn->m_context ? PR_SUCCESS : PR_FAILURE);
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}
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SSMStatus SSMHashConnection_Destroy(SSMResource *res, PRBool doFree)
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{
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SSMHashConnection *conn = (SSMHashConnection *) res;
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if (doFree)
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SSM_DEBUG("SSMHashConnection_Destroy called.\n");
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/* We should be shut down. */
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PR_ASSERT(res->m_threadCount == 0);
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/* Destroy our fields. */
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SSM_LockResource(SSMRESOURCE(conn));
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if (conn->m_context)
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SSMHashConnection_FinishHashing(conn);
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SSM_UnlockResource(SSMRESOURCE(conn));
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/* Destroy superclass fields. */
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SSMDataConnection_Destroy(SSMRESOURCE(conn), PR_FALSE);
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/* Free the connection object if asked. */
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if (doFree)
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PR_DELETE(conn);
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return PR_SUCCESS;
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}
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void
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SSMHashConnection_Invariant(SSMHashConnection *conn)
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{
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SSMDataConnection_Invariant(SSMDATACONNECTION(conn));
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/* our specific invariants */
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SSM_LockResource(SSMRESOURCE(conn));
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/* we should not be simultaneously hashed and hashing */
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if (conn->m_context)
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PR_ASSERT(conn->m_resultLen == 0);
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SSM_UnlockResource(SSMRESOURCE(conn));
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}
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SSMStatus
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SSMHashConnection_Shutdown(SSMResource *arg, SSMStatus status)
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{
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SSMStatus rv;
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PR_ASSERT(SSM_IsAKindOf(arg, SSM_RESTYPE_HASH_CONNECTION));
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/* Call our superclass shutdown. Thread control is handled there. */
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rv = SSMDataConnection_Shutdown(arg, status);
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return rv;
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}
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/*
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Hashing is performed by a single service thread. This thread
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feeds data from the outgoing queue into the hash context.
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*/
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void SSMHashConnection_ServiceThread(void * arg)
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{
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SSMStatus rv = PR_SUCCESS;
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SSMHashConnection * conn;
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SSMControlConnection *ctrl;
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SECItem *msg;
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PRIntn read;
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char buffer[LINESIZE+1] = {0};
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SSM_RegisterNewThread("hash service", (SSMResource *) arg);
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conn = (SSMHashConnection *)arg;
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SSM_DEBUG("initializing.\n");
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if (!arg)
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{
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PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
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goto loser;
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}
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SSMDATACONNECTION(conn)->m_dataServiceThread = PR_GetCurrentThread();
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/* set up the client data socket and authenticate it with nonce */
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rv = SSMDataConnection_SetupClientSocket(SSMDATACONNECTION(conn));
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if (rv != PR_SUCCESS) {
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goto loser;
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}
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/* Start hashing. */
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SSM_DEBUG("creating hash context.\n");
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SSMHashConnection_StartHashing(conn);
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/* Loop for as long as we have data. */
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while ((SSMRESOURCE(conn)->m_status == PR_SUCCESS) &&
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(SSM_Count(SSMDATACONNECTION(conn)->m_shutdownQ) == 0) &&
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(rv == PR_SUCCESS)) {
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read = LINESIZE; /* set the read size to the default line size */
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rv = SSMDataConnection_ReadFromSocket(SSMDATACONNECTION(conn),
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(PRInt32*)&read, buffer);
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if (read > 0) {
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/* there is data, add it to hash */
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SSM_DEBUG("Received %ld bytes of data for hasher.\n", read);
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PR_ASSERT(conn->m_context);
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HASH_Update(conn->m_context, (unsigned char *) buffer, (unsigned int)read);
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}
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else {
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/* either EOF or an error condition */
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goto finish;
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}
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}
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finish:
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SSM_DEBUG("Got shutdown msg.\n");
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/* Lock the resource object, so that we know that attribute requests
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won't be pending while we work. */
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SSM_LockResource(SSMRESOURCE(conn));
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/* SSM_ShutdownResource(SSMRESOURCE(conn), PR_SUCCESS);*/
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SSMHashConnection_FinishHashing(conn);
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/* If we've been asked to return the result, do it now. */
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if (SSMDATACONNECTION(conn)->m_sendResult) {
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SSM_DEBUG("Responding to deferred hash result request.\n");
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msg = (SECItem*)PORT_ZAlloc(sizeof(SECItem));
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PR_ASSERT(msg != NULL); /* need to have some preallocated
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failure to send */
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if (conn->m_result) {
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SSMAttributeValue value;
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GetAttribReply reply;
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value.type = SSM_STRING_ATTRIBUTE;
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value.u.string.len = conn->m_resultLen;
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value.u.string.data = conn->m_result;
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msg->type = (SECItemType) (SSM_REPLY_OK_MESSAGE | SSM_RESOURCE_ACTION
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| SSM_GET_ATTRIBUTE | SSM_STRING_ATTRIBUTE);
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reply.result = rv;
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reply.value = value;
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if (CMT_EncodeMessage(GetAttribReplyTemplate, (CMTItem*)msg, &reply) != CMTSuccess) {
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goto loser;
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}
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SSM_DEBUG("Generated a reply (t %lx/l %ld/d %lx)\n",
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msg->type, msg->len, msg->data);
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value.u.string.data = NULL;
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SSM_DestroyAttrValue(&value, PR_FALSE);
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}
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else {
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SingleNumMessage reply;
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msg->type = (SECItemType) (SSM_REPLY_ERR_MESSAGE | SSM_RESOURCE_ACTION
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| SSM_GET_ATTRIBUTE | SSM_STRING_ATTRIBUTE);
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reply.value = SSM_ERR_ATTRIBUTE_MISSING;
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if (CMT_EncodeMessage(GetAttribReplyTemplate, (CMTItem*)msg, &reply) != CMTSuccess) {
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goto loser;
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}
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SSM_DEBUG("Generated error reply (t %lx/l %ld/d %lx)\n",
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msg->type, msg->len, msg->data);
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}
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/* Post this message to the parent's control queue
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for delivery back to the client. */
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ctrl = (SSMControlConnection*)SSMCONNECTION(conn)->m_parent;
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PR_ASSERT(SSM_IsAKindOf(&ctrl->super.super, SSM_RESTYPE_CONTROL_CONNECTION));
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rv = SSM_SendQMessage(ctrl->m_controlOutQ,
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SSM_PRIORITY_NORMAL,
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msg->type, msg->len,
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(char*)msg->data, PR_TRUE);
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SSM_FreeMessage(msg);
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if (rv != PR_SUCCESS) goto loser;
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}
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SSM_UnlockResource(SSMRESOURCE(conn));
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loser:
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SSM_DEBUG("** Thread shutting down ** (%ld)\n", rv);
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if (conn != NULL) {
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SSM_ShutdownResource(SSMRESOURCE(conn), rv);
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SSM_FreeResource(SSMRESOURCE(conn));
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}
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}
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SSMStatus
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SSMHashConnection_GetAttrIDs(SSMResource *res,
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SSMAttributeID **ids,
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PRIntn *count)
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{
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SSMStatus rv;
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rv = SSMDataConnection_GetAttrIDs(res, ids, count);
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if (rv != PR_SUCCESS)
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goto loser;
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*ids = (SSMAttributeID *) PR_REALLOC(*ids, (*count + 1) * sizeof(SSMAttributeID));
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if (! *ids) goto loser;
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(*ids)[*count++] = SSM_FID_HASHCONN_RESULT;
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goto done;
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loser:
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if (rv == PR_SUCCESS) rv = PR_FAILURE;
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done:
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return rv;
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}
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SSMStatus
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SSMHashConnection_GetAttr(SSMResource *res,
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SSMAttributeID attrID,
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SSMResourceAttrType attrType,
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SSMAttributeValue *value)
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{
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SSMStatus rv = PR_SUCCESS;
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SSMHashConnection *hc = (SSMHashConnection *) res;
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if (! hc)
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return PR_INVALID_ARGUMENT_ERROR;
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SSMHashConnection_Invariant(hc);
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SSM_LockResource(SSMRESOURCE(hc));
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/* see what it is */
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switch(attrID)
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{
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case SSM_FID_HASHCONN_RESULT:
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if (hc->m_resultLen == 0)
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{
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/* Still waiting on hashing to finish.
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Set the flag which tells us to return the attribute
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when we finish. */
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SSMDATACONNECTION(hc)->m_sendResult = PR_TRUE;
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rv = SSM_ERR_DEFER_RESPONSE;
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goto loser;
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}
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/* XXX Fix this. Return the hash result in a string. */
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value->type = SSM_STRING_ATTRIBUTE;
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value->u.string.len = hc->m_resultLen;
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value->u.string.data = (unsigned char *) PR_CALLOC(hc->m_resultLen);
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if (value->u.string.data)
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memcpy(value->u.string.data, hc->m_result, hc->m_resultLen);
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else
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value->u.string.len = 0;
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break;
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default:
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rv = SSMDataConnection_GetAttr(res,attrID,attrType,value);
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if (rv != PR_SUCCESS)
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goto loser;
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}
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goto done;
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loser:
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value->type = SSM_NO_ATTRIBUTE;
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if (rv == PR_SUCCESS)
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rv = PR_FAILURE;
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done:
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SSM_UnlockResource(SSMRESOURCE(hc));
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return rv;
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}
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