libSslSupport/clutils.c

/*
    File:       clutils.c
        
        Contains:   common CL app-level routines, X version
        
    Copyright:  © Copyright 2002 Apple Computer, Inc. All rights reserved.
    
    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
                        ("Apple") in consideration of your agreement to the following terms, and your
                        use, installation, modification or redistribution of this Apple software
                        constitutes acceptance of these terms.  If you do not agree with these terms,
                        please do not use, install, modify or redistribute this Apple software.
 
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                        to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
                        copyrights in this original Apple software (the "Apple Software"), to use,
                        reproduce, modify and redistribute the Apple Software, with or without
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                        this notice and the following text and disclaimers in all such redistributions of
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                        Apple Computer, Inc. may be used to endorse or promote products derived from the
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                        expressly stated in this notice, no other rights or licenses, express or implied,
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                        Software may be incorporated.
 
                        The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
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    Change History (most recent first):
                11/4/02     1.0d1
 
*/
 
 
#include <stdlib.h>
#include <stdio.h>
#include <Security/cssm.h>
#include "clutils.h"
#include <Security/cssmapple.h> 
#include <string.h>
/*
 * Standard app-level memory functions required by CDSA.
 */
void * appMalloc (uint32 size, void *allocRef) {
    return( malloc(size) );
}
void appFree (void *mem_ptr, void *allocRef) {
    free(mem_ptr);
    return;
}
void * appRealloc (void *ptr, uint32 size, void *allocRef) {
    return( realloc( ptr, size ) );
}
void * appCalloc (uint32 num, uint32 size, void *allocRef) {
    return( calloc( num, size ) );
}
 
static CSSM_API_MEMORY_FUNCS memFuncs = {
    appMalloc,
    appFree,
    appRealloc,
    appCalloc,
    NULL
 };
 
static CSSM_VERSION vers = {2, 0};
static const CSSM_GUID testGuid = { 0xFADE, 0, 0, { 1,2,3,4,5,6,7,0 }};
 
/*
 * Init CSSM; returns CSSM_FALSE on error. Reusable.
 */
static CSSM_BOOL cssmInitd = CSSM_FALSE;
CSSM_BOOL cssmStartup()
{
    CSSM_RETURN  crtn;
    CSSM_PVC_MODE pvcPolicy = CSSM_PVC_NONE;
    
    if(cssmInitd) {
        return CSSM_TRUE;
    }  
    crtn = CSSM_Init (&vers, 
        CSSM_PRIVILEGE_SCOPE_NONE,
        &testGuid,
        CSSM_KEY_HIERARCHY_NONE,
        &pvcPolicy,
        NULL /* reserved */);
    if(crtn != CSSM_OK) 
    {
        printError("CSSM_Init", crtn);
        return CSSM_FALSE;
    }
    else {
        cssmInitd = CSSM_TRUE;
        return CSSM_TRUE;
    }
}
 
 
/*
 * Init CSSM and establish a session with the Apple CL.
 */
CSSM_CL_HANDLE clStartup()
{
    CSSM_CL_HANDLE clHand;
    CSSM_RETURN crtn;
    
    if(cssmStartup() == CSSM_FALSE) {
        return 0;
    }
    crtn = CSSM_ModuleLoad(&gGuidAppleX509CL,
        CSSM_KEY_HIERARCHY_NONE,
        NULL,           // eventHandler
        NULL);          // AppNotifyCallbackCtx
    if(crtn) {
        printError("CSSM_ModuleLoad(AppleCL)", crtn);
        return 0;
    }
    crtn = CSSM_ModuleAttach (&gGuidAppleX509CL,
        &vers,
        &memFuncs,              // memFuncs
        0,                      // SubserviceID
        CSSM_SERVICE_CL,        // SubserviceFlags - Where is this used?
        0,                      // AttachFlags
        CSSM_KEY_HIERARCHY_NONE,
        NULL,                   // FunctionTable
        0,                      // NumFuncTable
        NULL,                   // reserved
        &clHand);
    if(crtn) {
        printError("CSSM_ModuleAttach(AppleCL)", crtn);
        return 0;
    }
    else {
        return clHand;
    }
}
 
void clShutdown(
    CSSM_CL_HANDLE clHand)
{
    CSSM_RETURN crtn;
    
    crtn = CSSM_ModuleDetach(clHand);
    if(crtn) {
        printf("Error detaching from AppleCL\n");
        printError("CSSM_ModuleDetach", crtn);
        return;
    }
    crtn = CSSM_ModuleUnload(&gGuidAppleX509CL, NULL, NULL);
    if(crtn) {
        printf("Error unloading AppleCL\n");
        printError("CSSM_ModuleUnload", crtn);
    }
}
 
/*
 * Init CSSM and establish a session with the Apple TP.
 */
CSSM_TP_HANDLE tpStartup()
{
    CSSM_TP_HANDLE tpHand;
    CSSM_RETURN crtn;
    
    if(cssmStartup() == CSSM_FALSE) {
        return 0;
    }
    crtn = CSSM_ModuleLoad(&gGuidAppleX509TP,
        CSSM_KEY_HIERARCHY_NONE,
        NULL,           // eventHandler
        NULL);          // AppNotifyCallbackCtx
    if(crtn) {
        printError("CSSM_ModuleLoad(AppleTP)", crtn);
        return 0;
    }
    crtn = CSSM_ModuleAttach (&gGuidAppleX509TP,
        &vers,
        &memFuncs,              // memFuncs
        0,                      // SubserviceID
        CSSM_SERVICE_TP,        // SubserviceFlags
        0,                      // AttachFlags
        CSSM_KEY_HIERARCHY_NONE,
        NULL,                   // FunctionTable
        0,                      // NumFuncTable
        NULL,                   // reserved
        &tpHand);
    if(crtn) {
        printError("CSSM_ModuleAttach(AppleTP)", crtn);
        return 0;
    }
    else {
        return tpHand;
    }
}
 
void tpShutdown(
    CSSM_TP_HANDLE tpHand)
{
    CSSM_RETURN crtn;
    
    crtn = CSSM_ModuleDetach(tpHand);
    if(crtn) {
        printf("Error detaching from AppleTP\n");
        printError("CSSM_ModuleDetach", crtn);
        return;
    }
    crtn = CSSM_ModuleUnload(&gGuidAppleX509TP, NULL, NULL);
    if(crtn) {
        printf("Error unloading AppleTP\n");
        printError("CSSM_ModuleUnload", crtn);
    }
}
 
 
/*
 * Cook up a CSSM_DATA with specified integer, DER style (minimum number of
 * bytes, big-endian).
 */
CSSM_DATA_PTR intToDER(unsigned theInt)
{
    CSSM_DATA_PTR DER_Data = (CSSM_DATA_PTR)CSSM_MALLOC(sizeof(CSSM_DATA));
 
    if(theInt < 0x100) {
        DER_Data->Length = 1;
        DER_Data->Data = (uint8 *)CSSM_MALLOC(1);
        DER_Data->Data[0] = (unsigned char)(theInt);
    }
    else if(theInt < 0x10000) {
        DER_Data->Length = 2;
        DER_Data->Data = (uint8 *)CSSM_MALLOC(2);
        DER_Data->Data[0] = (unsigned char)(theInt >> 8);
        DER_Data->Data[1] = (unsigned char)(theInt);
    }
    else if(theInt < 0x1000000) {
        DER_Data->Length = 3;
        DER_Data->Data = (uint8 *)CSSM_MALLOC(3);
        DER_Data->Data[0] = (unsigned char)(theInt >> 16);
        DER_Data->Data[1] = (unsigned char)(theInt >> 8);
        DER_Data->Data[2] = (unsigned char)(theInt);
    }
    else  {
        DER_Data->Length = 4;
        DER_Data->Data = (uint8 *)CSSM_MALLOC(4);
        DER_Data->Data[0] = (unsigned char)(theInt >> 24);
        DER_Data->Data[1] = (unsigned char)(theInt >> 16);
        DER_Data->Data[2] = (unsigned char)(theInt >> 8);
        DER_Data->Data[3] = (unsigned char)(theInt);
    }
    return DER_Data;
}
 
/*
 * Convert a CSSM_DATA_PTR, referring to a DER-encoded int, to a
 * uint32.
 */
uint32 DER_ToInt(const CSSM_DATA *DER_Data)
{
    uint32      rtn = 0;
    unsigned    i = 0;
 
    while(i < DER_Data->Length) {
        rtn |= DER_Data->Data[i];
        if(++i == DER_Data->Length) {
            break;
        }
        rtn <<= 8;
    }
    return rtn;
}
 
/*
 * Log CSSM error.
 */
void printError(char *op, CSSM_RETURN err)
{
    cssmPerror(op, err);
}
 
CSSM_BOOL appCompareCssmData(const CSSM_DATA *d1,
    const CSSM_DATA *d2)
{   
    if(d1->Length != d2->Length) {
        return CSSM_FALSE;
    }
    if(memcmp(d1->Data, d2->Data, d1->Length)) {
        return CSSM_FALSE;
    }
    return CSSM_TRUE;   
}


Copyright © 2003 Apple Computer, Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2003-01-14