Commit | Line | Data |
---|---|---|
7774eca1 | 1 | #ifndef lint |
612884c9 | 2 | static char sccsid[] = "@(#)uuencode.c 5.4 (Berkeley) %G%"; |
7774eca1 SL |
3 | #endif |
4 | ||
5 | /* | |
6 | * uuencode [input] output | |
7 | * | |
8 | * Encode a file so it can be mailed to a remote system. | |
9 | */ | |
10 | #include <stdio.h> | |
11 | #include <sys/types.h> | |
12 | #include <sys/stat.h> | |
13 | ||
14 | /* ENC is the basic 1 character encoding function to make a char printing */ | |
46b15d8a | 15 | #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') |
7774eca1 SL |
16 | |
17 | main(argc, argv) | |
18 | char **argv; | |
19 | { | |
20 | FILE *in; | |
21 | struct stat sbuf; | |
22 | int mode; | |
23 | ||
24 | /* optional 1st argument */ | |
25 | if (argc > 2) { | |
26 | if ((in = fopen(argv[1], "r")) == NULL) { | |
27 | perror(argv[1]); | |
28 | exit(1); | |
29 | } | |
30 | argv++; argc--; | |
31 | } else | |
32 | in = stdin; | |
33 | ||
34 | if (argc != 2) { | |
35 | printf("Usage: uuencode [infile] remotefile\n"); | |
36 | exit(2); | |
37 | } | |
38 | ||
39 | /* figure out the input file mode */ | |
612884c9 KB |
40 | if (fstat(fileno(in), &sbuf) < 0 || !isatty(fileno(in))) |
41 | mode = 0666 & ~umask(0666); | |
42 | else | |
43 | mode = sbuf.st_mode & 0777; | |
7774eca1 SL |
44 | printf("begin %o %s\n", mode, argv[1]); |
45 | ||
46 | encode(in, stdout); | |
47 | ||
48 | printf("end\n"); | |
49 | exit(0); | |
50 | } | |
51 | ||
52 | /* | |
53 | * copy from in to out, encoding as you go along. | |
54 | */ | |
55 | encode(in, out) | |
56 | FILE *in; | |
57 | FILE *out; | |
58 | { | |
59 | char buf[80]; | |
60 | int i, n; | |
61 | ||
62 | for (;;) { | |
63 | /* 1 (up to) 45 character line */ | |
64 | n = fr(in, buf, 45); | |
65 | putc(ENC(n), out); | |
66 | ||
67 | for (i=0; i<n; i += 3) | |
68 | outdec(&buf[i], out); | |
69 | ||
70 | putc('\n', out); | |
71 | if (n <= 0) | |
72 | break; | |
73 | } | |
74 | } | |
75 | ||
76 | /* | |
77 | * output one group of 3 bytes, pointed at by p, on file f. | |
78 | */ | |
79 | outdec(p, f) | |
80 | char *p; | |
81 | FILE *f; | |
82 | { | |
83 | int c1, c2, c3, c4; | |
84 | ||
85 | c1 = *p >> 2; | |
86 | c2 = (*p << 4) & 060 | (p[1] >> 4) & 017; | |
87 | c3 = (p[1] << 2) & 074 | (p[2] >> 6) & 03; | |
88 | c4 = p[2] & 077; | |
89 | putc(ENC(c1), f); | |
90 | putc(ENC(c2), f); | |
91 | putc(ENC(c3), f); | |
92 | putc(ENC(c4), f); | |
93 | } | |
94 | ||
95 | /* fr: like read but stdio */ | |
96 | int | |
97 | fr(fd, buf, cnt) | |
98 | FILE *fd; | |
99 | char *buf; | |
100 | int cnt; | |
101 | { | |
102 | int c, i; | |
103 | ||
104 | for (i=0; i<cnt; i++) { | |
105 | c = getc(fd); | |
106 | if (c == EOF) | |
107 | return(i); | |
108 | buf[i] = c; | |
109 | } | |
110 | return (cnt); | |
111 | } |