869 lines
27 KiB
C
869 lines
27 KiB
C
/* crypto/des/des.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/opensslconf.h>
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#ifndef OPENSSL_SYS_MSDOS
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# ifndef OPENSSL_SYS_VMS
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# include OPENSSL_UNISTD
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# else /* OPENSSL_SYS_VMS */
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# ifdef __DECC
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# include <unistd.h>
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# else /* not __DECC */
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# include <math.h>
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# endif /* __DECC */
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# endif /* OPENSSL_SYS_VMS */
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#else /* OPENSSL_SYS_MSDOS */
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# include <io.h>
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#endif
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#include <time.h>
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#include "des_ver.h"
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#ifdef OPENSSL_SYS_VMS
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# include <types.h>
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# include <stat.h>
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#else
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# ifndef _IRIX
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# include <sys/types.h>
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# endif
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# include <sys/stat.h>
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#endif
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#include <openssl/des.h>
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#include <openssl/rand.h>
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#include <openssl/ui_compat.h>
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void usage(void);
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void doencryption(void);
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int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp);
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void uufwriteEnd(FILE *fp);
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int uufread(unsigned char *out, int size, unsigned int num, FILE *fp);
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int uuencode(unsigned char *in, int num, unsigned char *out);
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int uudecode(unsigned char *in, int num, unsigned char *out);
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void DES_3cbc_encrypt(DES_cblock *input, DES_cblock *output, long length,
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DES_key_schedule sk1, DES_key_schedule sk2,
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DES_cblock *ivec1, DES_cblock *ivec2, int enc);
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#ifdef OPENSSL_SYS_VMS
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# define EXIT(a) exit(a&0x10000000L)
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#else
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# define EXIT(a) exit(a)
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#endif
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#define BUFSIZE (8*1024)
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#define VERIFY 1
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#define KEYSIZ 8
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#define KEYSIZB 1024 /* should hit tty line limit first :-) */
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char key[KEYSIZB + 1];
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int do_encrypt, longk = 0;
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FILE *DES_IN, *DES_OUT, *CKSUM_OUT;
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char uuname[200];
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unsigned char uubuf[50];
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int uubufnum = 0;
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#define INUUBUFN (45*100)
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#define OUTUUBUF (65*100)
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unsigned char b[OUTUUBUF];
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unsigned char bb[300];
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DES_cblock cksum = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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char cksumname[200] = "";
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int vflag, cflag, eflag, dflag, kflag, bflag, fflag, sflag, uflag, flag3,
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hflag, error;
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int main(int argc, char **argv)
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{
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int i;
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struct stat ins, outs;
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char *p;
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char *in = NULL, *out = NULL;
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vflag = cflag = eflag = dflag = kflag = hflag = bflag = fflag = sflag =
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uflag = flag3 = 0;
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error = 0;
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memset(key, 0, sizeof(key));
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for (i = 1; i < argc; i++) {
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p = argv[i];
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if ((p[0] == '-') && (p[1] != '\0')) {
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p++;
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while (*p) {
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switch (*(p++)) {
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case '3':
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flag3 = 1;
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longk = 1;
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break;
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case 'c':
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cflag = 1;
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strncpy(cksumname, p, 200);
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cksumname[sizeof(cksumname) - 1] = '\0';
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p += strlen(cksumname);
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break;
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case 'C':
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cflag = 1;
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longk = 1;
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strncpy(cksumname, p, 200);
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cksumname[sizeof(cksumname) - 1] = '\0';
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p += strlen(cksumname);
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break;
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case 'e':
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eflag = 1;
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break;
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case 'v':
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vflag = 1;
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break;
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case 'E':
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eflag = 1;
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longk = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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case 'D':
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dflag = 1;
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longk = 1;
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break;
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case 'b':
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bflag = 1;
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break;
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case 'f':
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fflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 'u':
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uflag = 1;
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strncpy(uuname, p, 200);
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uuname[sizeof(uuname) - 1] = '\0';
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p += strlen(uuname);
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break;
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case 'h':
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hflag = 1;
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break;
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case 'k':
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kflag = 1;
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if ((i + 1) == argc) {
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fputs("must have a key with the -k option\n", stderr);
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error = 1;
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} else {
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int j;
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i++;
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strncpy(key, argv[i], KEYSIZB);
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for (j = strlen(argv[i]) - 1; j >= 0; j--)
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argv[i][j] = '\0';
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}
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break;
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default:
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fprintf(stderr, "'%c' unknown flag\n", p[-1]);
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error = 1;
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break;
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}
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}
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} else {
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if (in == NULL)
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in = argv[i];
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else if (out == NULL)
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out = argv[i];
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else
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error = 1;
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}
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}
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if (error)
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usage();
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/*-
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* We either
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* do checksum or
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* do encrypt or
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* do decrypt or
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* do decrypt then ckecksum or
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* do checksum then encrypt
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*/
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if (((eflag + dflag) == 1) || cflag) {
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if (eflag)
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do_encrypt = DES_ENCRYPT;
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if (dflag)
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do_encrypt = DES_DECRYPT;
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} else {
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if (vflag) {
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#ifndef _Windows
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fprintf(stderr, "des(1) built with %s\n", libdes_version);
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#endif
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EXIT(1);
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} else
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usage();
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}
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#ifndef _Windows
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if (vflag)
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fprintf(stderr, "des(1) built with %s\n", libdes_version);
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#endif
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if ((in != NULL) && (out != NULL) &&
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#ifndef OPENSSL_SYS_MSDOS
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(stat(in, &ins) != -1) &&
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(stat(out, &outs) != -1) &&
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(ins.st_dev == outs.st_dev) && (ins.st_ino == outs.st_ino))
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#else /* OPENSSL_SYS_MSDOS */
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(strcmp(in, out) == 0))
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#endif
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{
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fputs("input and output file are the same\n", stderr);
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EXIT(3);
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}
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if (!kflag)
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if (des_read_pw_string
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(key, KEYSIZB + 1, "Enter key:", eflag ? VERIFY : 0)) {
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fputs("password error\n", stderr);
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EXIT(2);
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}
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if (in == NULL)
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DES_IN = stdin;
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else if ((DES_IN = fopen(in, "r")) == NULL) {
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perror("opening input file");
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EXIT(4);
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}
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CKSUM_OUT = stdout;
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if (out == NULL) {
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DES_OUT = stdout;
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CKSUM_OUT = stderr;
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} else if ((DES_OUT = fopen(out, "w")) == NULL) {
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perror("opening output file");
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EXIT(5);
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}
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#ifdef OPENSSL_SYS_MSDOS
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/* This should set the file to binary mode. */
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{
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# include <fcntl.h>
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if (!(uflag && dflag))
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setmode(fileno(DES_IN), O_BINARY);
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if (!(uflag && eflag))
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setmode(fileno(DES_OUT), O_BINARY);
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}
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#endif
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doencryption();
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fclose(DES_IN);
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fclose(DES_OUT);
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EXIT(0);
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}
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void usage(void)
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{
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char **u;
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static const char *Usage[] = {
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"des <options> [input-file [output-file]]",
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"options:",
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"-v : des(1) version number",
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"-e : encrypt using SunOS compatible user key to DES key conversion.",
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"-E : encrypt ",
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"-d : decrypt using SunOS compatible user key to DES key conversion.",
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"-D : decrypt ",
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"-c[ckname] : generate a cbc_cksum using SunOS compatible user key to",
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" DES key conversion and output to ckname (stdout default,",
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" stderr if data being output on stdout). The checksum is",
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" generated before encryption and after decryption if used",
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" in conjunction with -[eEdD].",
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"-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].",
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"-k key : use key 'key'",
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"-h : the key that is entered will be a hexadecimal number",
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" that is used directly as the des key",
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"-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]",
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" (uuname is the filename to put in the uuencode header).",
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"-b : encrypt using DES in ecb encryption mode, the default is cbc mode.",
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"-3 : encrypt using triple DES encryption. This uses 2 keys",
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" generated from the input key. If the input key is less",
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" than 8 characters long, this is equivalent to normal",
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" encryption. Default is triple cbc, -b makes it triple ecb.",
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NULL
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};
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for (u = (char **)Usage; *u; u++) {
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fputs(*u, stderr);
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fputc('\n', stderr);
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}
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EXIT(1);
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}
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void doencryption(void)
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{
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#ifdef _LIBC
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extern unsigned long time();
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#endif
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register int i;
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DES_key_schedule ks, ks2;
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DES_cblock iv, iv2;
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char *p;
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int num = 0, j, k, l, rem, ll, len, last, ex = 0;
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DES_cblock kk, k2;
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FILE *O;
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int Exit = 0;
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#ifndef OPENSSL_SYS_MSDOS
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static unsigned char buf[BUFSIZE + 8], obuf[BUFSIZE + 8];
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#else
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static unsigned char *buf = NULL, *obuf = NULL;
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if (buf == NULL) {
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if (((buf = OPENSSL_malloc(BUFSIZE + 8)) == NULL) ||
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((obuf = OPENSSL_malloc(BUFSIZE + 8)) == NULL)) {
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fputs("Not enough memory\n", stderr);
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Exit = 10;
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goto problems;
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}
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}
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#endif
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if (hflag) {
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j = (flag3 ? 16 : 8);
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p = key;
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for (i = 0; i < j; i++) {
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k = 0;
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if ((*p <= '9') && (*p >= '0'))
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k = (*p - '0') << 4;
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else if ((*p <= 'f') && (*p >= 'a'))
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k = (*p - 'a' + 10) << 4;
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else if ((*p <= 'F') && (*p >= 'A'))
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k = (*p - 'A' + 10) << 4;
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else {
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fputs("Bad hex key\n", stderr);
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Exit = 9;
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goto problems;
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}
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p++;
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if ((*p <= '9') && (*p >= '0'))
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k |= (*p - '0');
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else if ((*p <= 'f') && (*p >= 'a'))
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k |= (*p - 'a' + 10);
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else if ((*p <= 'F') && (*p >= 'A'))
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k |= (*p - 'A' + 10);
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else {
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fputs("Bad hex key\n", stderr);
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Exit = 9;
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goto problems;
|
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}
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p++;
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if (i < 8)
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kk[i] = k;
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else
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k2[i - 8] = k;
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}
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DES_set_key_unchecked(&k2, &ks2);
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OPENSSL_cleanse(k2, sizeof(k2));
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} else if (longk || flag3) {
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if (flag3) {
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DES_string_to_2keys(key, &kk, &k2);
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DES_set_key_unchecked(&k2, &ks2);
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OPENSSL_cleanse(k2, sizeof(k2));
|
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} else
|
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DES_string_to_key(key, &kk);
|
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} else
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for (i = 0; i < KEYSIZ; i++) {
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l = 0;
|
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k = key[i];
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for (j = 0; j < 8; j++) {
|
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if (k & 1)
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l++;
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k >>= 1;
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}
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if (l & 1)
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kk[i] = key[i] & 0x7f;
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else
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kk[i] = key[i] | 0x80;
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}
|
|
|
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DES_set_key_unchecked(&kk, &ks);
|
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OPENSSL_cleanse(key, sizeof(key));
|
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OPENSSL_cleanse(kk, sizeof(kk));
|
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/* woops - A bug that does not showup under unix :-( */
|
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memset(iv, 0, sizeof(iv));
|
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memset(iv2, 0, sizeof(iv2));
|
|
|
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l = 1;
|
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rem = 0;
|
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/* first read */
|
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if (eflag || (!dflag && cflag)) {
|
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for (;;) {
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num = l = fread(&(buf[rem]), 1, BUFSIZE, DES_IN);
|
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l += rem;
|
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num += rem;
|
|
if (l < 0) {
|
|
perror("read error");
|
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Exit = 6;
|
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goto problems;
|
|
}
|
|
|
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rem = l % 8;
|
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len = l - rem;
|
|
if (feof(DES_IN)) {
|
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for (i = 7 - rem; i > 0; i--) {
|
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if (RAND_bytes(buf + l++, 1) <= 0)
|
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goto problems;
|
|
}
|
|
buf[l++] = rem;
|
|
ex = 1;
|
|
len += rem;
|
|
} else
|
|
l -= rem;
|
|
|
|
if (cflag) {
|
|
DES_cbc_cksum(buf, &cksum, (long)len, &ks, &cksum);
|
|
if (!eflag) {
|
|
if (feof(DES_IN))
|
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break;
|
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else
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (bflag && !flag3)
|
|
for (i = 0; i < l; i += 8)
|
|
DES_ecb_encrypt((DES_cblock *)&(buf[i]),
|
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(DES_cblock *)&(obuf[i]),
|
|
&ks, do_encrypt);
|
|
else if (flag3 && bflag)
|
|
for (i = 0; i < l; i += 8)
|
|
DES_ecb2_encrypt((DES_cblock *)&(buf[i]),
|
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(DES_cblock *)&(obuf[i]),
|
|
&ks, &ks2, do_encrypt);
|
|
else if (flag3 && !bflag) {
|
|
char tmpbuf[8];
|
|
|
|
if (rem)
|
|
memcpy(tmpbuf, &(buf[l]), (unsigned int)rem);
|
|
DES_3cbc_encrypt((DES_cblock *)buf, (DES_cblock *)obuf,
|
|
(long)l, ks, ks2, &iv, &iv2, do_encrypt);
|
|
if (rem)
|
|
memcpy(&(buf[l]), tmpbuf, (unsigned int)rem);
|
|
} else {
|
|
DES_cbc_encrypt(buf, obuf, (long)l, &ks, &iv, do_encrypt);
|
|
if (l >= 8)
|
|
memcpy(iv, &(obuf[l - 8]), 8);
|
|
}
|
|
if (rem)
|
|
memcpy(buf, &(buf[l]), (unsigned int)rem);
|
|
|
|
i = 0;
|
|
while (i < l) {
|
|
if (uflag)
|
|
j = uufwrite(obuf, 1, (unsigned int)l - i, DES_OUT);
|
|
else
|
|
j = fwrite(obuf, 1, (unsigned int)l - i, DES_OUT);
|
|
if (j == -1) {
|
|
perror("Write error");
|
|
Exit = 7;
|
|
goto problems;
|
|
}
|
|
i += j;
|
|
}
|
|
if (feof(DES_IN)) {
|
|
if (uflag)
|
|
uufwriteEnd(DES_OUT);
|
|
break;
|
|
}
|
|
}
|
|
} else { /* decrypt */
|
|
|
|
ex = 1;
|
|
for (;;) {
|
|
if (ex) {
|
|
if (uflag)
|
|
l = uufread(buf, 1, BUFSIZE, DES_IN);
|
|
else
|
|
l = fread(buf, 1, BUFSIZE, DES_IN);
|
|
ex = 0;
|
|
rem = l % 8;
|
|
l -= rem;
|
|
}
|
|
if (l < 0) {
|
|
perror("read error");
|
|
Exit = 6;
|
|
goto problems;
|
|
}
|
|
|
|
if (bflag && !flag3)
|
|
for (i = 0; i < l; i += 8)
|
|
DES_ecb_encrypt((DES_cblock *)&(buf[i]),
|
|
(DES_cblock *)&(obuf[i]),
|
|
&ks, do_encrypt);
|
|
else if (flag3 && bflag)
|
|
for (i = 0; i < l; i += 8)
|
|
DES_ecb2_encrypt((DES_cblock *)&(buf[i]),
|
|
(DES_cblock *)&(obuf[i]),
|
|
&ks, &ks2, do_encrypt);
|
|
else if (flag3 && !bflag) {
|
|
DES_3cbc_encrypt((DES_cblock *)buf, (DES_cblock *)obuf,
|
|
(long)l, ks, ks2, &iv, &iv2, do_encrypt);
|
|
} else {
|
|
DES_cbc_encrypt(buf, obuf, (long)l, &ks, &iv, do_encrypt);
|
|
if (l >= 8)
|
|
memcpy(iv, &(buf[l - 8]), 8);
|
|
}
|
|
|
|
if (uflag)
|
|
ll = uufread(&(buf[rem]), 1, BUFSIZE, DES_IN);
|
|
else
|
|
ll = fread(&(buf[rem]), 1, BUFSIZE, DES_IN);
|
|
ll += rem;
|
|
rem = ll % 8;
|
|
ll -= rem;
|
|
if (feof(DES_IN) && (ll == 0)) {
|
|
last = obuf[l - 1];
|
|
|
|
if ((last > 7) || (last < 0)) {
|
|
fputs("The file was not decrypted correctly.\n", stderr);
|
|
Exit = 8;
|
|
last = 0;
|
|
}
|
|
l = l - 8 + last;
|
|
}
|
|
i = 0;
|
|
if (cflag)
|
|
DES_cbc_cksum(obuf,
|
|
(DES_cblock *)cksum, (long)l / 8 * 8, &ks,
|
|
(DES_cblock *)cksum);
|
|
while (i != l) {
|
|
j = fwrite(obuf, 1, (unsigned int)l - i, DES_OUT);
|
|
if (j == -1) {
|
|
perror("Write error");
|
|
Exit = 7;
|
|
goto problems;
|
|
}
|
|
i += j;
|
|
}
|
|
l = ll;
|
|
if ((l == 0) && feof(DES_IN))
|
|
break;
|
|
}
|
|
}
|
|
if (cflag) {
|
|
l = 0;
|
|
if (cksumname[0] != '\0') {
|
|
if ((O = fopen(cksumname, "w")) != NULL) {
|
|
CKSUM_OUT = O;
|
|
l = 1;
|
|
}
|
|
}
|
|
for (i = 0; i < 8; i++)
|
|
fprintf(CKSUM_OUT, "%02X", cksum[i]);
|
|
fprintf(CKSUM_OUT, "\n");
|
|
if (l)
|
|
fclose(CKSUM_OUT);
|
|
}
|
|
problems:
|
|
OPENSSL_cleanse(buf, sizeof(buf));
|
|
OPENSSL_cleanse(obuf, sizeof(obuf));
|
|
OPENSSL_cleanse(&ks, sizeof(ks));
|
|
OPENSSL_cleanse(&ks2, sizeof(ks2));
|
|
OPENSSL_cleanse(iv, sizeof(iv));
|
|
OPENSSL_cleanse(iv2, sizeof(iv2));
|
|
OPENSSL_cleanse(kk, sizeof(kk));
|
|
OPENSSL_cleanse(k2, sizeof(k2));
|
|
OPENSSL_cleanse(uubuf, sizeof(uubuf));
|
|
OPENSSL_cleanse(b, sizeof(b));
|
|
OPENSSL_cleanse(bb, sizeof(bb));
|
|
OPENSSL_cleanse(cksum, sizeof(cksum));
|
|
if (Exit)
|
|
EXIT(Exit);
|
|
}
|
|
|
|
/* We ignore this parameter but it should be > ~50 I believe */
|
|
int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp)
|
|
{
|
|
int i, j, left, rem, ret = num;
|
|
static int start = 1;
|
|
|
|
if (start) {
|
|
fprintf(fp, "begin 600 %s\n",
|
|
(uuname[0] == '\0') ? "text.d" : uuname);
|
|
start = 0;
|
|
}
|
|
|
|
if (uubufnum) {
|
|
if (uubufnum + num < 45) {
|
|
memcpy(&(uubuf[uubufnum]), data, (unsigned int)num);
|
|
uubufnum += num;
|
|
return (num);
|
|
} else {
|
|
i = 45 - uubufnum;
|
|
memcpy(&(uubuf[uubufnum]), data, (unsigned int)i);
|
|
j = uuencode((unsigned char *)uubuf, 45, b);
|
|
fwrite(b, 1, (unsigned int)j, fp);
|
|
uubufnum = 0;
|
|
data += i;
|
|
num -= i;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < (((int)num) - INUUBUFN); i += INUUBUFN) {
|
|
j = uuencode(&(data[i]), INUUBUFN, b);
|
|
fwrite(b, 1, (unsigned int)j, fp);
|
|
}
|
|
rem = (num - i) % 45;
|
|
left = (num - i - rem);
|
|
if (left) {
|
|
j = uuencode(&(data[i]), left, b);
|
|
fwrite(b, 1, (unsigned int)j, fp);
|
|
i += left;
|
|
}
|
|
if (i != num) {
|
|
memcpy(uubuf, &(data[i]), (unsigned int)rem);
|
|
uubufnum = rem;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
void uufwriteEnd(FILE *fp)
|
|
{
|
|
int j;
|
|
static const char *end = " \nend\n";
|
|
|
|
if (uubufnum != 0) {
|
|
uubuf[uubufnum] = '\0';
|
|
uubuf[uubufnum + 1] = '\0';
|
|
uubuf[uubufnum + 2] = '\0';
|
|
j = uuencode(uubuf, uubufnum, b);
|
|
fwrite(b, 1, (unsigned int)j, fp);
|
|
}
|
|
fwrite(end, 1, strlen(end), fp);
|
|
}
|
|
|
|
/*
|
|
* int size: should always be > ~ 60; I actually ignore this parameter :-)
|
|
*/
|
|
int uufread(unsigned char *out, int size, unsigned int num, FILE *fp)
|
|
{
|
|
int i, j, tot;
|
|
static int done = 0;
|
|
static int valid = 0;
|
|
static int start = 1;
|
|
|
|
if (start) {
|
|
for (;;) {
|
|
b[0] = '\0';
|
|
fgets((char *)b, 300, fp);
|
|
if (b[0] == '\0') {
|
|
fprintf(stderr, "no 'begin' found in uuencoded input\n");
|
|
return (-1);
|
|
}
|
|
if (strncmp((char *)b, "begin ", 6) == 0)
|
|
break;
|
|
}
|
|
start = 0;
|
|
}
|
|
if (done)
|
|
return (0);
|
|
tot = 0;
|
|
if (valid) {
|
|
memcpy(out, bb, (unsigned int)valid);
|
|
tot = valid;
|
|
valid = 0;
|
|
}
|
|
for (;;) {
|
|
b[0] = '\0';
|
|
fgets((char *)b, 300, fp);
|
|
if (b[0] == '\0')
|
|
break;
|
|
i = strlen((char *)b);
|
|
if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd')) {
|
|
done = 1;
|
|
while (!feof(fp)) {
|
|
fgets((char *)b, 300, fp);
|
|
}
|
|
break;
|
|
}
|
|
i = uudecode(b, i, bb);
|
|
if (i < 0)
|
|
break;
|
|
if ((i + tot + 8) > num) {
|
|
/* num to copy to make it a multiple of 8 */
|
|
j = (num / 8 * 8) - tot - 8;
|
|
memcpy(&(out[tot]), bb, (unsigned int)j);
|
|
tot += j;
|
|
memcpy(bb, &(bb[j]), (unsigned int)i - j);
|
|
valid = i - j;
|
|
break;
|
|
}
|
|
memcpy(&(out[tot]), bb, (unsigned int)i);
|
|
tot += i;
|
|
}
|
|
return (tot);
|
|
}
|
|
|
|
#define ccc2l(c,l) (l =((DES_LONG)(*((c)++)))<<16, \
|
|
l|=((DES_LONG)(*((c)++)))<< 8, \
|
|
l|=((DES_LONG)(*((c)++))))
|
|
|
|
#define l2ccc(l,c) (*((c)++)=(unsigned char)(((l)>>16)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
|
|
*((c)++)=(unsigned char)(((l) )&0xff))
|
|
|
|
int uuencode(unsigned char *in, int num, unsigned char *out)
|
|
{
|
|
int j, i, n, tot = 0;
|
|
DES_LONG l;
|
|
register unsigned char *p;
|
|
p = out;
|
|
|
|
for (j = 0; j < num; j += 45) {
|
|
if (j + 45 > num)
|
|
i = (num - j);
|
|
else
|
|
i = 45;
|
|
*(p++) = i + ' ';
|
|
for (n = 0; n < i; n += 3) {
|
|
ccc2l(in, l);
|
|
*(p++) = ((l >> 18) & 0x3f) + ' ';
|
|
*(p++) = ((l >> 12) & 0x3f) + ' ';
|
|
*(p++) = ((l >> 6) & 0x3f) + ' ';
|
|
*(p++) = ((l) & 0x3f) + ' ';
|
|
tot += 4;
|
|
}
|
|
*(p++) = '\n';
|
|
tot += 2;
|
|
}
|
|
*p = '\0';
|
|
l = 0;
|
|
return (tot);
|
|
}
|
|
|
|
int uudecode(unsigned char *in, int num, unsigned char *out)
|
|
{
|
|
int j, i, k;
|
|
unsigned int n = 0, space = 0;
|
|
DES_LONG l;
|
|
DES_LONG w, x, y, z;
|
|
unsigned int blank = (unsigned int)'\n' - ' ';
|
|
|
|
for (j = 0; j < num;) {
|
|
n = *(in++) - ' ';
|
|
if (n == blank) {
|
|
n = 0;
|
|
in--;
|
|
}
|
|
if (n > 60) {
|
|
fprintf(stderr, "uuencoded line length too long\n");
|
|
return (-1);
|
|
}
|
|
j++;
|
|
|
|
for (i = 0; i < n; j += 4, i += 3) {
|
|
/*
|
|
* the following is for cases where spaces are removed from
|
|
* lines.
|
|
*/
|
|
if (space) {
|
|
w = x = y = z = 0;
|
|
} else {
|
|
w = *(in++) - ' ';
|
|
x = *(in++) - ' ';
|
|
y = *(in++) - ' ';
|
|
z = *(in++) - ' ';
|
|
}
|
|
if ((w > 63) || (x > 63) || (y > 63) || (z > 63)) {
|
|
k = 0;
|
|
if (w == blank)
|
|
k = 1;
|
|
if (x == blank)
|
|
k = 2;
|
|
if (y == blank)
|
|
k = 3;
|
|
if (z == blank)
|
|
k = 4;
|
|
space = 1;
|
|
switch (k) {
|
|
case 1:
|
|
w = 0;
|
|
in--;
|
|
case 2:
|
|
x = 0;
|
|
in--;
|
|
case 3:
|
|
y = 0;
|
|
in--;
|
|
case 4:
|
|
z = 0;
|
|
in--;
|
|
break;
|
|
case 0:
|
|
space = 0;
|
|
fprintf(stderr, "bad uuencoded data values\n");
|
|
w = x = y = z = 0;
|
|
return (-1);
|
|
break;
|
|
}
|
|
}
|
|
l = (w << 18) | (x << 12) | (y << 6) | (z);
|
|
l2ccc(l, out);
|
|
}
|
|
if (*(in++) != '\n') {
|
|
fprintf(stderr, "missing nl in uuencoded line\n");
|
|
w = x = y = z = 0;
|
|
return (-1);
|
|
}
|
|
j++;
|
|
}
|
|
*out = '\0';
|
|
w = x = y = z = 0;
|
|
return (n);
|
|
}
|