secarb.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:9k
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- #include "secutil.h"
- #ifdef __sun
- extern int fprintf(FILE *strm, const char *format, .../* args */);
- extern int fflush(FILE *stream);
- #endif
- #define RIGHT_MARGIN 24
- /*#define RAW_BYTES 1 */
- typedef unsigned char Byte;
- static int prettyColumn; /* NOTE: This is NOT reentrant. */
- static char *prettyTagType [32] = {
- "End of Contents", "Boolean", "Integer", "Bit String", "Octet String",
- "NULL", "Object Identifier", "0x07", "0x08", "0x09", "0x0A",
- "0x0B", "0X0C", "0X0D", "0X0E", "0X0F", "Sequence", "Set",
- "0x12", "Printable String", "T61 String", "0x15", "IA5 String",
- "UTCTime",
- "0x18", "0x19", "0x1A", "0x1B", "0x1C", "0x1D", "0x1E",
- "High-Tag-Number"
- };
- static SECStatus prettyNewline(FILE *out)
- {
- int rv;
- if (prettyColumn != -1) {
- rv = fprintf(out, "n");
- prettyColumn = -1;
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return SECFailure;
- }
- }
- return SECSuccess;
- }
- static SECStatus prettyIndent(FILE *out, unsigned level)
- {
- unsigned i;
- SECStatus rv;
- if (prettyColumn == -1) {
- prettyColumn = level;
- for (i = 0; i < level; i++) {
- rv = (SECStatus) fprintf(out, " ");
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return SECFailure;
- }
- }
- }
- return SECSuccess;
- }
- static SECStatus prettyPrintByte(FILE *out, Byte item, unsigned level)
- {
- SECStatus rv;
- rv = prettyIndent(out, level);
- if (rv) return rv;
- rv = (SECStatus) fprintf(out, "%02x ", item);
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return SECFailure;
- }
- prettyColumn++;
- if (prettyColumn >= RIGHT_MARGIN) {
- rv = prettyNewline(out);
- return rv;
- }
- return SECSuccess;
- }
- static SECStatus prettyPrintCString(FILE *out, char *str, unsigned level)
- {
- SECStatus rv;
- rv = prettyNewline(out);
- if (rv) return rv;
- rv = prettyIndent(out, level);
- if (rv) return rv;
- rv = (SECStatus) fprintf(out, str);
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return SECFailure;
- }
- rv = prettyNewline(out);
- return rv;
- }
- static SECStatus prettyPrintLeafString(FILE *out, SECArb *arb, unsigned lv)
- {
- unsigned char buf[100];
- SECStatus rv;
- int length = arb->body.item.len;
- if (length > 0 && arb->body.item.data == NULL)
- return prettyPrintCString(out, "(string contents not available)", lv);
- if (length >= sizeof(buf))
- length = sizeof(buf) - 1;
- rv = prettyNewline(out);
- if (rv) return rv;
- rv = prettyIndent(out, lv);
- if (rv) return rv;
- memcpy(buf, arb->body.item.data, length);
- buf[length] = ' 00';
- rv = (SECStatus) fprintf(out, ""%s"", buf);
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return SECFailure;
- }
- rv = prettyNewline(out);
- if (rv) return rv;
- return SECSuccess;
- }
- static SECStatus prettyPrintLeaf(FILE *out, SECArb* arb, unsigned lv)
- {
- unsigned i;
- SECStatus rv;
- Byte *data = arb->body.item.data;
- if (data == NULL && arb->body.item.len > 0)
- return prettyPrintCString(out, "(data not availabe)", lv);
- for (i = 0; i < arb->body.item.len; i++) {
- rv = prettyPrintByte(out, *data++, lv);
- if (rv) return rv;
- }
- rv = prettyNewline(out);
- return rv;
- }
- static SECStatus prettyPrintEndContents(FILE *out, unsigned level)
- {
- return prettyPrintCString(out, prettyTagType[0], level);
- }
- static SECStatus prettyPrintTag(FILE *out, SECArb *arb, unsigned level)
- {
- int rv;
- #ifdef RAW_BYTES
- if (prettyPrintByte(out, arb->tag, level)) return PR_TRUE;
- #else
- if (prettyIndent(out, level)) return PR_TRUE;
- #endif
- if (arb->tag & DER_CONSTRUCTED) {
- rv = fprintf(out, "C-");
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return PR_TRUE;
- }
- }
- switch(arb->tag & 0xC0) {
- case DER_UNIVERSAL:
- rv = fprintf(out, "%s ", prettyTagType[arb->tag & 0x17]);
- break;
- case DER_APPLICATION:
- rv = fprintf(out, "Application: %d ", arb->tag & 0x17);
- break;
- case DER_CONTEXT_SPECIFIC:
- rv = fprintf(out, "[%d] ", arb->tag & 0x17);
- break;
- case DER_PRIVATE:
- rv = fprintf(out, "Private: %d ", arb->tag & 0x17);
- break;
- }
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return PR_TRUE;
- }
- return PR_FALSE;
- }
- static SECStatus prettyPrintLength(FILE *out, SECArb *arb, unsigned lv)
- {
- int rv = fprintf(out, " (%d)n", arb->length);
- if (rv < 0) {
- PORT_SetError(SEC_ERROR_IO);
- return -1;
- }
- prettyColumn = -1;
- return PR_FALSE;
- }
- static SECStatus prettyPrint(FILE *out, SECArb *arb, unsigned lv)
- {
- int i;
- prettyPrintTag(out, arb, lv);
- prettyPrintLength(out, arb, lv);
- if (arb->tag & DER_CONSTRUCTED) {
- for (i = 0; i < arb->body.cons.numSubs; i++)
- prettyPrint(out, arb->body.cons.subs[i], lv + 1);
- if (arb->length == 0)
- prettyPrintEndContents(out, lv);
- } else {
- if (arb->tag == DER_PRINTABLE_STRING || arb->tag == DER_UTC_TIME) {
- if (prettyPrintLeafString(out, arb, lv+1)) return PR_TRUE;
- #ifdef RAW_BYTES
- if (prettyPrintLeaf(out, arb, lv+1)) return PR_TRUE;
- #endif
- } else {
- if (prettyPrintLeaf(out, arb, lv+1)) return PR_TRUE;
- }
- }
- return prettyNewline(out);
- }
- SECStatus BER_PrettyPrintArb(FILE *out, SECArb *a)
- {
- prettyColumn = -1;
- return prettyPrint(out, a, 0);
- }
- /*
- * PackHeader puts the tag and length field into a buffer provided by the
- * client. It assumes the client has made the buffer at least big
- * enough. (8 bytes will suffice for now). It returns the number of
- * valid bytes
- */
- static int PackHeader(SECArb *arb, unsigned char *header)
- {
- int tagBytes, lengthBytes;
- unsigned long length = arb->length;
- /*
- * XXX only handles short form tags
- */
- header[0] = arb->tag;
- tagBytes = 1;
- if (length < 0x80) {
- if ((arb->tag & DER_CONSTRUCTED) && (arb->length == 0))
- header[tagBytes] = 0x80; /* indefinite length form */
- else
- header[tagBytes] = arb->length;
- lengthBytes = 1;
- } else {
- int i;
- lengthBytes = 0;
- for (i = 0; i < 4; i++) {
- if ((length & 0xFF000000) || (lengthBytes > 0)) {
- header[tagBytes + lengthBytes + 1] = length >> 24;
- lengthBytes++;
- }
- length <<= 8;
- }
- header[tagBytes] = 0x80 + lengthBytes;
- lengthBytes++; /* allow for the room for the length length */
- }
- return tagBytes + lengthBytes;
- }
- SECStatus BER_Unparse(SECArb *arb, BERUnparseProc proc, void *instance)
- {
- int i, length;
- SECStatus rv;
- unsigned char header[12];
- length = PackHeader(arb, header);
- rv = (*proc)(instance, header, length, arb);
- if (rv) return rv;
- if (arb->tag & DER_CONSTRUCTED) {
- for (i = 0; i < arb->body.cons.numSubs; i++) {
- rv = BER_Unparse(arb->body.cons.subs[i], proc, instance);
- if (rv) return rv;
- }
- if (arb->length == 0) {
- rv = (*proc)(instance, "