+++ /dev/null
-/*
- * Copyright (c) 2003,2011-2012,2014 Apple Inc. All Rights Reserved.
- *
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please
- * obtain a copy of the License at http://www.apple.com/publicsource and
- * read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- */
-
-/*
- File: cuPem.h
-
- Description: PEM encode/decode routines
-
- Author: dmitch
-
-*/
-
-#include "cuPem.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <strings.h>
-#include <ctype.h>
-#include "cuEnc64.h"
-
-#define PEM_SCAN_LEN 8192
-
-/*
- * Determine if specified blob appears to be PEM format.
- * Returns 1 if so, 0 if not.
- */
-int isPem(
- const unsigned char *inData,
- unsigned inDataLen)
-{
- /*
- * 1. The entire blob must be printable ASCII.
- */
- const unsigned char *cp = inData;
- for(unsigned dex=0; dex<inDataLen; dex++, cp++) {
- if(!isprint(*cp) && !isspace(*cp)) {
- return 0;
- }
- }
-
- /*
- * Search for "-----BEGIN " and "-----END".
- * No strnstr() on X, so copy and NULL terminate to use strstr.
- * First, get the first PEM_SCAN_LEN chars or inDataLen, whichever
- * is less.
- */
- unsigned char buf[PEM_SCAN_LEN + 1];
- unsigned len = inDataLen;
- if(len > PEM_SCAN_LEN) {
- len = PEM_SCAN_LEN;
- }
- memcpy(buf, inData, len);
- buf[len] = '\0';
- const char *p = strstr((const char *)buf, "-----BEGIN ");
- if(p == NULL) {
- return 0;
- }
-
- /*
- * Now the last PEM_SCAN_LEN chars or inDataLen, whichever is less.
- */
- if(inDataLen > PEM_SCAN_LEN) {
- memcpy(buf, inData + inDataLen - PEM_SCAN_LEN, PEM_SCAN_LEN);
- buf[PEM_SCAN_LEN] = '\0';
- }
- /* else we already have whole blob in buf[] */
- p = strstr((const char *)buf, "-----END ");
- if(p == NULL) {
- return 0;
- }
- /* success */
- return 1;
-}
-
-int pemEncode(
- const unsigned char *inData,
- unsigned inDataLen,
- unsigned char **outData,
- unsigned *outDataLen,
- const char *headerString)
-{
- unsigned char *enc;
- unsigned encLen;
-
- /* First base64 encode */
- enc = cuEnc64WithLines(inData, inDataLen, 64, &encLen);
- if(enc == NULL) {
- /* malloc error is actually the only known failure */
- printf("***pemEncode: Error encoding file. Aborting.\n");
- return -1;
- }
-
- /* estimate outsize - just be sloppy, way conservative */
- size_t outSize = encLen + (2 * strlen(headerString)) + 200;
- *outData = (unsigned char *)malloc(outSize);
- sprintf((char *)*outData, "-----BEGIN %s-----\n%s-----END %s-----\n",
- headerString, (char *)enc, headerString);
- *outDataLen = (unsigned int)strlen((char *)*outData);
-
- if((*outData)[*outDataLen - 1] == '\0') {
- (*outDataLen)--;
- }
- free(enc);
- return 0;
-}
-
-int pemDecode(
- const unsigned char *inData,
- unsigned inDataLen,
- unsigned char **outData,
- unsigned *outDataLen)
-{
- char *cp;
- char *curr1, *curr2;
- char *startPem = NULL;
- char *endPem = NULL;
- unsigned char *out;
- unsigned outLen;
- int ourRtn = 0;
- char *freeCp = NULL;
-
- /* make the whole thing a NULL-terminated string */
- if(inData[inDataLen - 1] != '\0') {
- cp = freeCp = (char *)malloc(inDataLen + 1);
- memmove(cp, inData, inDataLen);
- cp[inDataLen] = '\0';
- inDataLen++;
- }
- else {
- /* already is */
- cp = (char *)inData;
- }
-
- /* cp is start of NULL-terminated buffer, size inDataLen */
- /* skip over everything until "-----" */
- curr1 = strstr(cp, "-----");
- if(curr1 == NULL) {
- printf("***pemDecode: no terminator found\n");
- ourRtn = -1;
- goto abort;
- }
-
- /* find end of separator line, handling both flavors of terminator */
- cp = curr1;
- curr1 = strchr(cp, '\n');
- curr2 = strchr(cp, '\r');
- if((curr1 == NULL) & (curr2 == NULL)) {
- printf("***pemDecode: Bad PEM format (1)\n");
- ourRtn = -1;
- goto abort;
- }
- if(curr1 == NULL) {
- startPem = curr2;
- }
- else {
- startPem = curr1;
- }
-
- /* startPem points to end of separator line */
- /* locate ending terminator and lop it off */
- curr1 = strstr(startPem, "-----");
- if(curr1 == NULL) {
- printf("***pemDecode: Bad PEM format (2)\n");
- ourRtn = -1;
- goto abort;
- }
- endPem = curr1;
- /* endPem points to last PEM data plus one */
-
- out = cuDec64((unsigned char *)startPem, (unsigned int)(endPem-startPem), &outLen);
- if(out == NULL) {
- printf("Bad PEM format (3)\n");
- ourRtn = -1;
- goto abort;
- }
- *outData = out;
- *outDataLen = outLen;
-abort:
- if(freeCp) {
- free(freeCp);
- }
- return ourRtn;
-}
-
projects / apple / security.git / blobdiff