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-rw-r--r--crypto/des/des.c1562
1 files changed, 748 insertions, 814 deletions
diff --git a/crypto/des/des.c b/crypto/des/des.c
index 343135ff9ec5..2bff281258e8 100644
--- a/crypto/des/des.c
+++ b/crypto/des/des.c
@@ -5,21 +5,21 @@
* 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:
@@ -34,10 +34,10 @@
* 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
+ * 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
@@ -49,7 +49,7 @@
* 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
@@ -61,30 +61,30 @@
#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>
+# 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>
+# include <types.h>
+# include <stat.h>
#else
-#ifndef _IRIX
-#include <sys/types.h>
-#endif
-#include <sys/stat.h>
+# ifndef _IRIX
+# include <sys/types.h>
+# endif
+# include <sys/stat.h>
#endif
#include <openssl/des.h>
#include <openssl/rand.h>
@@ -94,839 +94,773 @@ 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);
+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)
+# define EXIT(a) exit(a&0x10000000L)
#else
-#define EXIT(a) exit(a)
+# 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;
+#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)
+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]="";
+DES_cblock cksum = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error;
+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) &&
+{
+ 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))
+ (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);
- }
-
+ {
+ 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);
- }
+ /* 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);
- }
+ 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);
- }
+{
+ 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();
+ 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;
+ 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];
+ 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;
- }
- }
+ 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);
- }
+ 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);
- }
+{
+ 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 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);
- }
+{
+ 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)++))))
+ 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 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);
- }
+{
+ 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);
+}