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369 lines
10 KiB
C
369 lines
10 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All 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 terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Test program for SDR (Secret Decoder Ring) functions.
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*
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* $Id: pwdecrypt.c,v 1.7 2009/08/03 07:07:13 nelson%bolyard.com Exp $
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*/
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#include "nspr.h"
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#include "string.h"
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#include "nss.h"
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#include "secutil.h"
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#include "cert.h"
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#include "pk11func.h"
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#include "nssb64.h"
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#include "plgetopt.h"
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#include "pk11sdr.h"
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#define DEFAULT_VALUE "Test"
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static void
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synopsis (char *program_name)
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{
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PRFileDesc *pr_stderr;
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pr_stderr = PR_STDERR;
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PR_fprintf (pr_stderr,
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"Usage:\t%s [-i <input-file>] [-o <output-file>] [-d <dir>]\n"
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" \t[-l logfile] [-p pwd] [-f pwfile]\n", program_name);
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}
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static void
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short_usage (char *program_name)
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{
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PR_fprintf (PR_STDERR,
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"Type %s -H for more detailed descriptions\n",
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program_name);
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synopsis (program_name);
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}
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static void
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long_usage (char *program_name)
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{
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PRFileDesc *pr_stderr;
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pr_stderr = PR_STDERR;
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synopsis (program_name);
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PR_fprintf (pr_stderr, "\nDecode encrypted passwords (and other data).\n");
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PR_fprintf (pr_stderr,
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"This program reads in standard configuration files looking\n"
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"for base 64 encoded data. Data that looks like it's base 64 encode\n"
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"is decoded an passed to the NSS SDR code. If the decode and decrypt\n"
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"is successful, then decrypted data is outputted in place of the\n"
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"original base 64 data. If the decode or decrypt fails, the original\n"
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"data is written and the reason for failure is logged to the \n"
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"optional logfile.\n");
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PR_fprintf (pr_stderr,
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" %-13s Read stream including encrypted data from "
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"\"read_file\"\n",
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"-i read_file");
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PR_fprintf (pr_stderr,
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" %-13s Write results to \"write_file\"\n",
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"-o write_file");
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PR_fprintf (pr_stderr,
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" %-13s Find security databases in \"dbdir\"\n",
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"-d dbdir");
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PR_fprintf (pr_stderr,
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" %-13s Log failed decrypt/decode attempts to \"log_file\"\n",
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"-l log_file");
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PR_fprintf (pr_stderr,
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" %-13s Token password\n",
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"-p pwd");
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PR_fprintf (pr_stderr,
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" %-13s Password file\n",
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"-f pwfile");
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}
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/*
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* base64 table only used to identify the end of a base64 string
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*/
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static unsigned char b64[256] = {
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/* 00: */ 0, 0, 0, 0, 0, 0, 0, 0,
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/* 08: */ 0, 0, 0, 0, 0, 0, 0, 0,
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/* 10: */ 0, 0, 0, 0, 0, 0, 0, 0,
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/* 18: */ 0, 0, 0, 0, 0, 0, 0, 0,
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/* 20: */ 0, 0, 0, 0, 0, 0, 0, 0,
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/* 28: */ 0, 0, 0, 1, 0, 0, 0, 1,
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/* 30: */ 1, 1, 1, 1, 1, 1, 1, 1,
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/* 38: */ 1, 1, 0, 0, 0, 0, 0, 0,
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/* 40: */ 0, 1, 1, 1, 1, 1, 1, 1,
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/* 48: */ 1, 1, 1, 1, 1, 1, 1, 1,
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/* 50: */ 1, 1, 1, 1, 1, 1, 1, 1,
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/* 58: */ 1, 1, 1, 0, 0, 0, 0, 0,
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/* 60: */ 0, 1, 1, 1, 1, 1, 1, 1,
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/* 68: */ 1, 1, 1, 1, 1, 1, 1, 1,
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/* 70: */ 1, 1, 1, 1, 1, 1, 1, 1,
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/* 78: */ 1, 1, 1, 0, 0, 0, 0, 0,
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};
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enum {
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false = 0,
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true = 1
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} bool;
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#define isatobchar(c) (b64[c])
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#define MAX_STRING 8192
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int
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isBase64(char *inString)
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{
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unsigned int i;
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unsigned char c;
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for (i = 0; (c = inString[i]) != 0 && isatobchar(c); ++i)
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;
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if (c == '=') {
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while ((c = inString[++i]) == '=')
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; /* skip trailing '=' characters */
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}
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if (c && c != '\n' && c != '\r')
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return false;
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if (i == 0 || i % 4)
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return false;
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return true;
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}
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void
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doDecrypt(char * dataString, FILE *outFile, FILE *logFile, secuPWData *pwdata)
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{
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int strLen = strlen(dataString);
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SECItem *decoded = NSSBase64_DecodeBuffer(NULL, NULL, dataString, strLen);
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SECStatus rv;
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int err;
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unsigned int i;
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SECItem result = { siBuffer, NULL, 0 };
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if ((decoded == NULL) || (decoded->len == 0)) {
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if (logFile) {
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err = PORT_GetError();
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fprintf(logFile,"Base 64 decode failed on <%s>\n", dataString);
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fprintf(logFile," Error %d: %s\n", err, SECU_Strerror(err));
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}
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fputs(dataString, outFile);
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if (decoded)
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SECITEM_FreeItem(decoded, PR_TRUE);
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return;
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}
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rv = PK11SDR_Decrypt(decoded, &result, pwdata);
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SECITEM_ZfreeItem(decoded, PR_TRUE);
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if (rv == SECSuccess) {
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/* result buffer has no extra space for a NULL */
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fprintf(outFile, "Decrypted: \"%.*s\"\n", result.len, result.data);
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SECITEM_ZfreeItem(&result, PR_FALSE);
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return;
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}
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/* Encryption failed. output raw input. */
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if (logFile) {
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err = PORT_GetError();
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fprintf(logFile,"SDR decrypt failed on <%s>\n", dataString);
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fprintf(logFile," Error %d: %s\n", err, SECU_Strerror(err));
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}
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fputs(dataString,outFile);
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}
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void
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doDecode(char * dataString, FILE *outFile, FILE *logFile)
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{
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int strLen = strlen(dataString + 1);
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SECItem *decoded;
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decoded = NSSBase64_DecodeBuffer(NULL, NULL, dataString + 1, strLen);
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if ((decoded == NULL) || (decoded->len == 0)) {
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if (logFile) {
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int err = PORT_GetError();
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fprintf(logFile,"Base 64 decode failed on <%s>\n", dataString + 1);
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fprintf(logFile," Error %d: %s\n", err, SECU_Strerror(err));
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}
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fputs(dataString, outFile);
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if (decoded)
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SECITEM_FreeItem(decoded, PR_TRUE);
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return;
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}
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fprintf(outFile, "Decoded: \"%.*s\"\n", decoded->len, decoded->data);
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SECITEM_ZfreeItem(decoded, PR_TRUE);
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}
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char dataString[MAX_STRING + 1];
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int
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main (int argc, char **argv)
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{
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int retval = 0; /* 0 - test succeeded. -1 - test failed */
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SECStatus rv;
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PLOptState *optstate;
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char *program_name;
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char *input_file = NULL; /* read encrypted data from here (or create) */
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char *output_file = NULL; /* write new encrypted data here */
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char *log_file = NULL; /* write new encrypted data here */
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FILE *inFile = stdin;
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FILE *outFile = stdout;
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FILE *logFile = NULL;
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PLOptStatus optstatus;
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secuPWData pwdata = { PW_NONE, NULL };
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program_name = PL_strrchr(argv[0], '/');
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program_name = program_name ? (program_name + 1) : argv[0];
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optstate = PL_CreateOptState (argc, argv, "Hd:f:i:o:l:p:?");
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if (optstate == NULL) {
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SECU_PrintError (program_name, "PL_CreateOptState failed");
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return 1;
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}
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while ((optstatus = PL_GetNextOpt(optstate)) == PL_OPT_OK) {
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switch (optstate->option) {
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case '?':
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short_usage (program_name);
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return 1;
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case 'H':
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long_usage (program_name);
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return 1;
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case 'd':
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SECU_ConfigDirectory(optstate->value);
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break;
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case 'i':
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input_file = PL_strdup(optstate->value);
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break;
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case 'o':
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output_file = PL_strdup(optstate->value);
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break;
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case 'l':
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log_file = PL_strdup(optstate->value);
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break;
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case 'f':
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pwdata.source = PW_FROMFILE;
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pwdata.data = PL_strdup(optstate->value);
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break;
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case 'p':
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pwdata.source = PW_PLAINTEXT;
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pwdata.data = PL_strdup(optstate->value);
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break;
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}
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}
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PL_DestroyOptState(optstate);
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if (optstatus == PL_OPT_BAD) {
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short_usage (program_name);
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return 1;
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}
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if (input_file) {
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inFile = fopen(input_file,"r");
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if (inFile == NULL) {
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perror(input_file);
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return 1;
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}
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PR_Free(input_file);
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}
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if (output_file) {
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outFile = fopen(output_file,"w+");
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if (outFile == NULL) {
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perror(output_file);
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return 1;
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}
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PR_Free(output_file);
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}
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if (log_file) {
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if (log_file[0] == '-')
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logFile = stderr;
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else
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logFile = fopen(log_file,"w+");
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if (logFile == NULL) {
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perror(log_file);
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return 1;
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}
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PR_Free(log_file);
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}
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/*
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* Initialize the Security libraries.
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*/
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PK11_SetPasswordFunc(SECU_GetModulePassword);
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rv = NSS_Init(SECU_ConfigDirectory(NULL));
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if (rv != SECSuccess) {
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SECU_PrintError (program_name, "NSS_Init failed");
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retval = 1;
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goto prdone;
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}
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/* Get the encrypted result, either from the input file
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* or from encrypting the plaintext value
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*/
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while (fgets(dataString, sizeof dataString, inFile)) {
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unsigned char c = dataString[0];
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if (c == 'M' && isBase64(dataString)) {
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doDecrypt(dataString, outFile, logFile, &pwdata);
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} else if (c == '~' && isBase64(dataString + 1)) {
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doDecode(dataString, outFile, logFile);
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} else {
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fputs(dataString, outFile);
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}
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}
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if (pwdata.data)
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PR_Free(pwdata.data);
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fclose(outFile);
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fclose(inFile);
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if (logFile && logFile != stderr) {
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fclose(logFile);
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}
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if (NSS_Shutdown() != SECSuccess) {
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SECU_PrintError (program_name, "NSS_Shutdown failed");
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exit(1);
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}
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prdone:
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PR_Cleanup ();
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return retval;
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}
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