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-rw-r--r--bitmask_android/openssl/crypto/des/des.c932
1 files changed, 932 insertions, 0 deletions
diff --git a/bitmask_android/openssl/crypto/des/des.c b/bitmask_android/openssl/crypto/des/des.c
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+++ b/bitmask_android/openssl/crypto/des/des.c
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+/* crypto/des/des.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <openssl/opensslconf.h>
+#ifndef OPENSSL_SYS_MSDOS
+#ifndef OPENSSL_SYS_VMS
+#include OPENSSL_UNISTD
+#else /* OPENSSL_SYS_VMS */
+#ifdef __DECC
+#include <unistd.h>
+#else /* not __DECC */
+#include <math.h>
+#endif /* __DECC */
+#endif /* OPENSSL_SYS_VMS */
+#else /* OPENSSL_SYS_MSDOS */
+#include <io.h>
+#endif
+
+#include <time.h>
+#include "des_ver.h"
+
+#ifdef OPENSSL_SYS_VMS
+#include <types.h>
+#include <stat.h>
+#else
+#ifndef _IRIX
+#include <sys/types.h>
+#endif
+#include <sys/stat.h>
+#endif
+#include <openssl/des.h>
+#include <openssl/rand.h>
+#include <openssl/ui_compat.h>
+
+void usage(void);
+void doencryption(void);
+int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp);
+void uufwriteEnd(FILE *fp);
+int uufread(unsigned char *out,int size,unsigned int num,FILE *fp);
+int uuencode(unsigned char *in,int num,unsigned char *out);
+int uudecode(unsigned char *in,int num,unsigned char *out);
+void DES_3cbc_encrypt(DES_cblock *input,DES_cblock *output,long length,
+ DES_key_schedule sk1,DES_key_schedule sk2,
+ DES_cblock *ivec1,DES_cblock *ivec2,int enc);
+#ifdef OPENSSL_SYS_VMS
+#define EXIT(a) exit(a&0x10000000L)
+#else
+#define EXIT(a) exit(a)
+#endif
+
+#define BUFSIZE (8*1024)
+#define VERIFY 1
+#define KEYSIZ 8
+#define KEYSIZB 1024 /* should hit tty line limit first :-) */
+char key[KEYSIZB+1];
+int do_encrypt,longk=0;
+FILE *DES_IN,*DES_OUT,*CKSUM_OUT;
+char uuname[200];
+unsigned char uubuf[50];
+int uubufnum=0;
+#define INUUBUFN (45*100)
+#define OUTUUBUF (65*100)
+unsigned char b[OUTUUBUF];
+unsigned char bb[300];
+DES_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+char cksumname[200]="";
+
+int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error;
+
+int main(int argc, char **argv)
+ {
+ int i;
+ struct stat ins,outs;
+ char *p;
+ char *in=NULL,*out=NULL;
+
+ vflag=cflag=eflag=dflag=kflag=hflag=bflag=fflag=sflag=uflag=flag3=0;
+ error=0;
+ memset(key,0,sizeof(key));
+
+ for (i=1; i<argc; i++)
+ {
+ p=argv[i];
+ if ((p[0] == '-') && (p[1] != '\0'))
+ {
+ p++;
+ while (*p)
+ {
+ switch (*(p++))
+ {
+ case '3':
+ flag3=1;
+ longk=1;
+ break;
+ case 'c':
+ cflag=1;
+ strncpy(cksumname,p,200);
+ cksumname[sizeof(cksumname)-1]='\0';
+ p+=strlen(cksumname);
+ break;
+ case 'C':
+ cflag=1;
+ longk=1;
+ strncpy(cksumname,p,200);
+ cksumname[sizeof(cksumname)-1]='\0';
+ p+=strlen(cksumname);
+ break;
+ case 'e':
+ eflag=1;
+ break;
+ case 'v':
+ vflag=1;
+ break;
+ case 'E':
+ eflag=1;
+ longk=1;
+ break;
+ case 'd':
+ dflag=1;
+ break;
+ case 'D':
+ dflag=1;
+ longk=1;
+ break;
+ case 'b':
+ bflag=1;
+ break;
+ case 'f':
+ fflag=1;
+ break;
+ case 's':
+ sflag=1;
+ break;
+ case 'u':
+ uflag=1;
+ strncpy(uuname,p,200);
+ uuname[sizeof(uuname)-1]='\0';
+ p+=strlen(uuname);
+ break;
+ case 'h':
+ hflag=1;
+ break;
+ case 'k':
+ kflag=1;
+ if ((i+1) == argc)
+ {
+ fputs("must have a key with the -k option\n",stderr);
+ error=1;
+ }
+ else
+ {
+ int j;
+
+ i++;
+ strncpy(key,argv[i],KEYSIZB);
+ for (j=strlen(argv[i])-1; j>=0; j--)
+ argv[i][j]='\0';
+ }
+ break;
+ default:
+ fprintf(stderr,"'%c' unknown flag\n",p[-1]);
+ error=1;
+ break;
+ }
+ }
+ }
+ else
+ {
+ if (in == NULL)
+ in=argv[i];
+ else if (out == NULL)
+ out=argv[i];
+ else
+ error=1;
+ }
+ }
+ if (error) usage();
+ /* We either
+ * do checksum or
+ * do encrypt or
+ * do decrypt or
+ * do decrypt then ckecksum or
+ * do checksum then encrypt
+ */
+ if (((eflag+dflag) == 1) || cflag)
+ {
+ if (eflag) do_encrypt=DES_ENCRYPT;
+ if (dflag) do_encrypt=DES_DECRYPT;
+ }
+ else
+ {
+ if (vflag)
+ {
+#ifndef _Windows
+ fprintf(stderr,"des(1) built with %s\n",libdes_version);
+#endif
+ EXIT(1);
+ }
+ else usage();
+ }
+
+#ifndef _Windows
+ if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version);
+#endif
+ if ( (in != NULL) &&
+ (out != NULL) &&
+#ifndef OPENSSL_SYS_MSDOS
+ (stat(in,&ins) != -1) &&
+ (stat(out,&outs) != -1) &&
+ (ins.st_dev == outs.st_dev) &&
+ (ins.st_ino == outs.st_ino))
+#else /* OPENSSL_SYS_MSDOS */
+ (strcmp(in,out) == 0))
+#endif
+ {
+ fputs("input and output file are the same\n",stderr);
+ EXIT(3);
+ }
+
+ if (!kflag)
+ if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0))
+ {
+ fputs("password error\n",stderr);
+ EXIT(2);
+ }
+
+ if (in == NULL)
+ DES_IN=stdin;
+ else if ((DES_IN=fopen(in,"r")) == NULL)
+ {
+ perror("opening input file");
+ EXIT(4);
+ }
+
+ CKSUM_OUT=stdout;
+ if (out == NULL)
+ {
+ DES_OUT=stdout;
+ CKSUM_OUT=stderr;
+ }
+ else if ((DES_OUT=fopen(out,"w")) == NULL)
+ {
+ perror("opening output file");
+ EXIT(5);
+ }
+
+#ifdef OPENSSL_SYS_MSDOS
+ /* This should set the file to binary mode. */
+ {
+#include <fcntl.h>
+ if (!(uflag && dflag))
+ setmode(fileno(DES_IN),O_BINARY);
+ if (!(uflag && eflag))
+ setmode(fileno(DES_OUT),O_BINARY);
+ }
+#endif
+
+ doencryption();
+ fclose(DES_IN);
+ fclose(DES_OUT);
+ EXIT(0);
+ }
+
+void usage(void)
+ {
+ char **u;
+ static const char *Usage[]={
+"des <options> [input-file [output-file]]",
+"options:",
+"-v : des(1) version number",
+"-e : encrypt using SunOS compatible user key to DES key conversion.",
+"-E : encrypt ",
+"-d : decrypt using SunOS compatible user key to DES key conversion.",
+"-D : decrypt ",
+"-c[ckname] : generate a cbc_cksum using SunOS compatible user key to",
+" DES key conversion and output to ckname (stdout default,",
+" stderr if data being output on stdout). The checksum is",
+" generated before encryption and after decryption if used",
+" in conjunction with -[eEdD].",
+"-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].",
+"-k key : use key 'key'",
+"-h : the key that is entered will be a hexadecimal number",
+" that is used directly as the des key",
+"-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]",
+" (uuname is the filename to put in the uuencode header).",
+"-b : encrypt using DES in ecb encryption mode, the default is cbc mode.",
+"-3 : encrypt using triple DES encryption. This uses 2 keys",
+" generated from the input key. If the input key is less",
+" than 8 characters long, this is equivalent to normal",
+" encryption. Default is triple cbc, -b makes it triple ecb.",
+NULL
+};
+ for (u=(char **)Usage; *u; u++)
+ {
+ fputs(*u,stderr);
+ fputc('\n',stderr);
+ }
+
+ EXIT(1);
+ }
+
+void doencryption(void)
+ {
+#ifdef _LIBC
+ extern unsigned long time();
+#endif
+
+ register int i;
+ DES_key_schedule ks,ks2;
+ DES_cblock iv,iv2;
+ char *p;
+ int num=0,j,k,l,rem,ll,len,last,ex=0;
+ DES_cblock kk,k2;
+ FILE *O;
+ int Exit=0;
+#ifndef OPENSSL_SYS_MSDOS
+ static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8];
+#else
+ static unsigned char *buf=NULL,*obuf=NULL;
+
+ if (buf == NULL)
+ {
+ if ( (( buf=OPENSSL_malloc(BUFSIZE+8)) == NULL) ||
+ ((obuf=OPENSSL_malloc(BUFSIZE+8)) == NULL))
+ {
+ fputs("Not enough memory\n",stderr);
+ Exit=10;
+ goto problems;
+ }
+ }
+#endif
+
+ if (hflag)
+ {
+ j=(flag3?16:8);
+ p=key;
+ for (i=0; i<j; i++)
+ {
+ k=0;
+ if ((*p <= '9') && (*p >= '0'))
+ k=(*p-'0')<<4;
+ else if ((*p <= 'f') && (*p >= 'a'))
+ k=(*p-'a'+10)<<4;
+ else if ((*p <= 'F') && (*p >= 'A'))
+ k=(*p-'A'+10)<<4;
+ else
+ {
+ fputs("Bad hex key\n",stderr);
+ Exit=9;
+ goto problems;
+ }
+ p++;
+ if ((*p <= '9') && (*p >= '0'))
+ k|=(*p-'0');
+ else if ((*p <= 'f') && (*p >= 'a'))
+ k|=(*p-'a'+10);
+ else if ((*p <= 'F') && (*p >= 'A'))
+ k|=(*p-'A'+10);
+ else
+ {
+ fputs("Bad hex key\n",stderr);
+ Exit=9;
+ goto problems;
+ }
+ p++;
+ if (i < 8)
+ kk[i]=k;
+ else
+ k2[i-8]=k;
+ }
+ DES_set_key_unchecked(&k2,&ks2);
+ OPENSSL_cleanse(k2,sizeof(k2));
+ }
+ else if (longk || flag3)
+ {
+ if (flag3)
+ {
+ DES_string_to_2keys(key,&kk,&k2);
+ DES_set_key_unchecked(&k2,&ks2);
+ OPENSSL_cleanse(k2,sizeof(k2));
+ }
+ else
+ DES_string_to_key(key,&kk);
+ }
+ else
+ for (i=0; i<KEYSIZ; i++)
+ {
+ l=0;
+ k=key[i];
+ for (j=0; j<8; j++)
+ {
+ if (k&1) l++;
+ k>>=1;
+ }
+ if (l & 1)
+ kk[i]=key[i]&0x7f;
+ else
+ kk[i]=key[i]|0x80;
+ }
+
+ DES_set_key_unchecked(&kk,&ks);
+ OPENSSL_cleanse(key,sizeof(key));
+ OPENSSL_cleanse(kk,sizeof(kk));
+ /* woops - A bug that does not showup under unix :-( */
+ memset(iv,0,sizeof(iv));
+ memset(iv2,0,sizeof(iv2));
+
+ l=1;
+ rem=0;
+ /* first read */
+ if (eflag || (!dflag && cflag))
+ {
+ for (;;)
+ {
+ num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN);
+ l+=rem;
+ num+=rem;
+ if (l < 0)
+ {
+ perror("read error");
+ Exit=6;
+ goto problems;
+ }
+
+ rem=l%8;
+ len=l-rem;
+ if (feof(DES_IN))
+ {
+ for (i=7-rem; i>0; i--)
+ RAND_pseudo_bytes(buf + l++, 1);
+ 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)) break;
+ else continue;
+ }
+ }
+
+ 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)
+ {
+ 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);
+ }
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 05:03:47 +0000