diff options
Diffstat (limited to 'openssl/crypto/des/des.c')
| -rw-r--r-- | openssl/crypto/des/des.c | 932 |
1 files changed, 0 insertions, 932 deletions
diff --git a/openssl/crypto/des/des.c b/openssl/crypto/des/des.c deleted file mode 100644 index 343135ff..00000000 --- a/openssl/crypto/des/des.c +++ /dev/null @@ -1,932 +0,0 @@ -/* 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); - } |