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Aminet 24
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PPCuucoders.lha
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PPCuucoders
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uuencode.c
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C/C++ Source or Header
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1998-02-07
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4KB
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174 lines
/*
* uuencode >outfile [infile] name
*
* Encode a file so it can be mailed to a remote system. This version
* transparantly adds line checksums and a file size for sanity checks.
*
*/
/* Modified by Andreas R. Kleinert
*
* 07.02.98: - powerUP (TM) version, compiled with SAS/C for PPC
*
* 31.08.97: - reworked for SAS/C 6.58
* - better compiler settings
* - ANSI-fied
*
* 04.08.94: - first, internal version
*
*
* Original authors:
*
* Written by Mark Horton
* Modified by ajr (Alan J Rosenthatl,flaps@utcsri.UUCP) to use checksums
* Modified by fnf (Fred Fish,well!fnf) to use Keith Pyle's suggestion for
* compatibility
* Modified by bcn (Bryce Nesbitt,ucbvax!hoser!bryce) to enable CTRL-C for
* Amiga Lattice C. Added a transparent file size trailer for later check.
* Changed fopen from "r" to "rb" for Messy-dos machines (thanks to Andrew
* Wylie)
*/
#define __USE_SYSBASE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <exec/types.h>
#include <proto/exec.h>
LONG filemode(FILE *in);
void encode(FILE *in, FILE *out);
LONG outdec(UBYTE *p, FILE *f);
LONG fr(FILE *fd, UBYTE *buf, LONG cnt);
LONG totalsize = 0; /* Used to count the file size because ftell() does
not return sane results for pipes */
UBYTE __aligned version [] = "\0$VER: uuencode 1.0 (7.2.98)";
long main(long argc, char **argv)
{
FILE *in;
LONG mode;
/* optional 1st argument */
if (argc > 2) {
if ((in = fopen(argv[1], "r")) == NULL) {
fprintf(stderr, "ERROR: can't find %s\n", argv[1]);
fprintf(stderr, "USAGE: uuencode >outfile [infile] name\n");
exit(20);
}
argv++; argc--;
} else
in = stdin;
if (argc != 2) {
fprintf(stderr, "USAGE: uuencode >outfile [infile] name\n");
exit(0);
}
mode = filemode(in);
printf("\nbegin %o %s\n", mode, argv[1]);
encode(in, stdout);
printf("end\n");
printf("size %ld\n",totalsize);
exit(0);
}
LONG filemode(FILE *in)
{
#ifdef unix_stat
struct stat sbuf;
fstat(fileno(in), &sbuf);
return( sbuf.st_mode & 0777); /* figure out the input file mode */
#else
return( 0644 ); /* Default permissions */
#endif
}
#define SUMSIZE 64 /* 6 bits */
/* ENC is the basic 1 character encode function to make a char printing */
/* Each output character represents 6 bits of input */
#define ENC(c) ((c) ? ((c) & 077) + ' ': '`')
/*
* copy from in to out, encoding as you go along.
*/
void encode(FILE *in, FILE *out)
{
extern errno;
LONG i, n, checksum;
char buf[256];
for (;;) {
/* 1 (up to) 45 character line */
n = fr(in, buf, 45);
putc(ENC(n), out);
checksum = 0;
for (i=0; i<n; i += 3)
checksum = (checksum+outdec(&buf[i], out)) % SUMSIZE;
putc(ENC(checksum), out);
putc('\n', out);
/* Error checking under UNIX?? You must be kidding! */
if (errno) {
fprintf(stderr, "ERROR: error writing to output\n");
exit(20);
}
if (n <= 0)
break;
}
}
/*
* output one group of 3 bytes, pointed at by p, on file f.
* return the checksum increment.
*/
LONG outdec(UBYTE *p, FILE *f)
{
LONG c1, c2, c3, c4;
c1 = *p >> 2;
c2 = (*p << 4) & 060 | (p[1] >> 4) & 017;
c3 = (p[1] << 2) & 074 | (p[2] >> 6) & 03;
c4 = p[2] & 077;
putc(ENC(c1), f);
putc(ENC(c2), f);
putc(ENC(c3), f);
putc(ENC(c4), f);
return((p[0]+p[1]+p[2]) % SUMSIZE);
}
/* fr: like read but stdio */
LONG fr(FILE *fd, UBYTE *buf, LONG cnt)
{
LONG c, i;
for (i=0; i<cnt; i++) {
c = getc(fd);
if (c == EOF)
return(i);
totalsize++;
buf[i] = c;
}
return (cnt);
}