344 lines
13 KiB
C
344 lines
13 KiB
C
/***********************************************************************
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*
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* Copyright (C) 2006 Novell, Inc. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, Novell, Inc.
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*
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* To contact Novell about this file by physical or electronic mail,
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* you may find current contact information at www.novell.com.
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*
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* Author: Juan Carlos Luciani <jluciani@novell.com>
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*
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***********************************************************************/
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//===[ Include files ]=====================================================
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#include "internal.h"
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//===[ Type definitions ]==================================================
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//
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// AuthMechMod definition
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//
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typedef struct _AuthMechMod
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{
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LIST_ENTRY listEntry;
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char *pAuthTypeName;
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int authTypeNameLen;
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LIB_HANDLE libHandle;
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AuthTokenIf *pAuthTokenIf;
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} AuthMechMod, *PAuthMechMod;
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//===[ Function prototypes ]===============================================
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//===[ Global variables ]==================================================
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// AuthMechModule List and syncronizing mutex
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static
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LIST_ENTRY g_authMechModuleListHead = {&g_authMechModuleListHead,
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&g_authMechModuleListHead};
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//++=======================================================================
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static
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CasaStatus
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GetAuthTokenIf(
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IN const char *pAuthTypeName,
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INOUT AuthTokenIf **ppAuthTokenIf)
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//
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// Arguments:
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//
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// Returns:
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//
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// Abstract:
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//
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// Notes:
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//
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// Environment:
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//
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// L2
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//=======================================================================--
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{
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CasaStatus retStatus;
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ConfigIf *pModuleConfigIf;
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DbgTrace(2, "-GetAuthTokenIf- Start\n", 0);
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// Get the configuration for the module
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retStatus = GetConfigInterface(mechConfigFolder,
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pAuthTypeName,
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&pModuleConfigIf);
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if (CASA_SUCCESS(retStatus)
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&& CasaStatusCode(retStatus) != CASA_STATUS_OBJECT_NOT_FOUND)
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{
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LIST_ENTRY *pListEntry;
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AuthMechMod *pAuthMechMod = NULL;
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int authTypeNameLen = strlen(pAuthTypeName);
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// Look if we already have the module in our list
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pListEntry = g_authMechModuleListHead.Flink;
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while (pListEntry != &g_authMechModuleListHead)
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{
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// Get pointer to the current entry
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pAuthMechMod = CONTAINING_RECORD(pListEntry, AuthMechMod, listEntry);
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// Check if this is the module that we need
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if (pAuthMechMod->authTypeNameLen == authTypeNameLen
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&& memcmp(pAuthTypeName, pAuthMechMod->pAuthTypeName, authTypeNameLen) == 0)
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{
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// This is the module that we need, stop looking.
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break;
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}
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else
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{
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// This is not the module that we are looking for
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pAuthMechMod = NULL;
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}
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// Advance to the next entry
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pListEntry = pListEntry->Flink;
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}
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// Proceed based on whether or not a module was found
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if (pAuthMechMod)
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{
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// Module found in our list, provide the caller with its AuthTokenIf
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// instance after we have incremented its reference count.
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pAuthMechMod->pAuthTokenIf->addReference(pAuthMechMod->pAuthTokenIf);
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*ppAuthTokenIf = pAuthMechMod->pAuthTokenIf;
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// Success
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retStatus = CASA_STATUS_SUCCESS;
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}
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else
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{
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// Needed module not found in our list, create an entry.
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pAuthMechMod = (AuthMechMod*) malloc(sizeof(*pAuthMechMod));
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if (pAuthMechMod)
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{
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// Allocate buffer to contain the authentication type name within the module entry
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pAuthMechMod->pAuthTypeName = (char*) malloc(authTypeNameLen + 1);
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if (pAuthMechMod->pAuthTypeName)
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{
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char *pLibraryName;
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// Initialize the library handle field
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pAuthMechMod->libHandle = NULL;
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// Save the auth type name within the entry
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strcpy(pAuthMechMod->pAuthTypeName, pAuthTypeName);
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pAuthMechMod->authTypeNameLen = authTypeNameLen;
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// Obtain the name of the library that we must load
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pLibraryName = pModuleConfigIf->getEntryValue(pModuleConfigIf, "LibraryName");
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if (pLibraryName)
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{
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// Load the library
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pAuthMechMod->libHandle = OpenLibrary(pLibraryName);
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if (pAuthMechMod->libHandle)
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{
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PFN_GetAuthTokenIfRtn pGetAuthTokenIfRtn;
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// Library has been loaded, now get a pointer to its GetAuthTokenInterface routine
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pGetAuthTokenIfRtn = (PFN_GetAuthTokenIfRtn) GetFunctionPtr(pAuthMechMod->libHandle,
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GET_AUTH_TOKEN_INTERFACE_RTN_SYMBOL);
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if (pGetAuthTokenIfRtn)
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{
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// Now, obtain the modules AuthTokenIf.
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retStatus = (pGetAuthTokenIfRtn)(pModuleConfigIf, &pAuthMechMod->pAuthTokenIf);
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}
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else
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{
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DbgTrace(0, "-GetAuthTokenIf- GetFunctionPtr\n", 0);
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retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_LIBRARY_LOAD_FAILURE);
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}
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}
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else
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{
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DbgTrace(0, "-GetAuthTokenIf- OpenLibrary error\n", 0);
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retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_UNSUCCESSFUL);
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}
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// Free the buffer holding the library name
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free(pLibraryName);
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}
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else
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{
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DbgTrace(0, "-GetAuthTokenIf- Library name not configured\n", 0);
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retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_CONFIGURATION_ERROR);
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}
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// Check if we were successful at obtaining the AuthTokenIf instance for the
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// module.
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if (CASA_SUCCESS(retStatus))
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{
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// Insert the entry in the list, provide the caller with its AuthTokenIf
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// instance after we have incremented its reference count.
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InsertTailList(&g_authMechModuleListHead, &pAuthMechMod->listEntry);
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pAuthMechMod->pAuthTokenIf->addReference(pAuthMechMod->pAuthTokenIf);
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*ppAuthTokenIf = pAuthMechMod->pAuthTokenIf;
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}
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else
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{
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// Failed, free resources.
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free(pAuthMechMod->pAuthTypeName);
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if (pAuthMechMod->libHandle)
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CloseLibrary(pAuthMechMod->libHandle);
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free(pAuthMechMod);
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}
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}
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else
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{
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DbgTrace(0, "GetAuthTokenIf-GetAuthTokenIf- Unable to allocate buffer\n", 0);
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// Free buffer allocated for entry
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free(pAuthMechMod);
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retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_INSUFFICIENT_RESOURCES);
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}
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}
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else
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{
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DbgTrace(0, "-GetAuthTokenIf- Unable to allocate buffer\n", 0);
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retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_INSUFFICIENT_RESOURCES);
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}
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}
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// Release config interface instance
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pModuleConfigIf->releaseReference(pModuleConfigIf);
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}
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else
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{
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DbgTrace(0, "-GetAuthTokenIf- Unable to obtain config interface\n", 0);
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retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_CONFIGURATION_ERROR);
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}
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DbgTrace(2, "-GetAuthTokenIf- End, retStatus = %08X\n", retStatus);
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return retStatus;
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}
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//++=======================================================================
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CasaStatus
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GetAuthMechToken(
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IN AuthContext *pAuthContext,
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IN const char *pHostName,
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IN void *pCredStoreScope,
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INOUT char **ppAuthToken)
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//
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// Arguments:
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//
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// Returns:
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//
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// Abstract:
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//
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// Notes:
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//
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// L2
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//=======================================================================--
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{
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CasaStatus retStatus = CasaStatusBuild(CASA_SEVERITY_ERROR,
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CASA_FACILITY_AUTHTOKEN,
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CASA_STATUS_UNSUCCESSFUL);
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AuthTokenIf *pAuthTokenIf = NULL;
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DbgTrace(1, "-GetAuthMechToken- Start\n", 0);
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// Initialize output parameter
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*ppAuthToken = NULL;
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// Obtain the appropriate token interface for the authentication type
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retStatus = GetAuthTokenIf(pAuthContext->pMechanism,
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&pAuthTokenIf);
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if (CASA_SUCCESS(retStatus))
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{
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char *pAuthToken = NULL;
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int authTokenBufLen = 0;
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// We found a provider for the service, query it for the buffer size
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// needed to obtain the authentication token.
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retStatus = pAuthTokenIf->getAuthToken(pAuthTokenIf,
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pAuthContext->pContext,
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pAuthContext->pMechInfo,
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pHostName,
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pCredStoreScope,
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pAuthToken,
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&authTokenBufLen);
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if (CasaStatusCode(retStatus) == CASA_STATUS_BUFFER_OVERFLOW)
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{
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// Allocate buffer to hold the authentication token
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pAuthToken = (char*) malloc(authTokenBufLen);
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if (pAuthToken)
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{
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// Request the token from the provider
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retStatus = pAuthTokenIf->getAuthToken(pAuthTokenIf,
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pAuthContext->pContext,
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pAuthContext->pMechInfo,
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pHostName,
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pCredStoreScope,
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pAuthToken,
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&authTokenBufLen);
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if (CASA_SUCCESS(retStatus))
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{
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// Return the buffer containing the token to the caller
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*ppAuthToken = pAuthToken;
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}
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else
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{
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// Free the allocated buffer
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free(pAuthToken);
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}
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}
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else
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{
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DbgTrace(0, "-GetAuthMechToken- Buffer allocation failure\n", 0);
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}
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}
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// Release token interface
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pAuthTokenIf->releaseReference(pAuthTokenIf);
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}
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else
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{
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// No authentication token interface available for authentication type
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DbgTrace(0, "-GetAuthMechToken- Failed to obtain auth mech token interface\n", 0);
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}
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DbgTrace(1, "-GetAuthMechToken- End, retStatus = %08X\n", retStatus);
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return retStatus;
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}
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//++=======================================================================
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//++=======================================================================
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//++=======================================================================
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