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Diffstat (limited to 'busybox/coreutils/uuencode.c')
-rw-r--r-- | busybox/coreutils/uuencode.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/busybox/coreutils/uuencode.c b/busybox/coreutils/uuencode.c new file mode 100644 index 000000000..42f629f48 --- /dev/null +++ b/busybox/coreutils/uuencode.c | |||
@@ -0,0 +1,149 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * Copyright (C) 2000 by Glenn McGrath | ||
4 | * | ||
5 | * based on the function base64_encode from http.c in wget v1.6 | ||
6 | * Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc. | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License as published by | ||
10 | * the Free Software Foundation; either version 2 of the License, or | ||
11 | * (at your option) any later version. | ||
12 | * | ||
13 | * This program is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 | * GNU Library General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
21 | */ | ||
22 | #include <getopt.h> | ||
23 | #include <stdio.h> | ||
24 | #include <string.h> | ||
25 | #include <stdlib.h> | ||
26 | #include <sys/types.h> | ||
27 | #include <sys/stat.h> | ||
28 | #include <unistd.h> | ||
29 | #include "busybox.h" | ||
30 | |||
31 | /* Conversion table. for base 64 */ | ||
32 | static const char tbl_base64[65] = { | ||
33 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', | ||
34 | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', | ||
35 | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', | ||
36 | 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', | ||
37 | 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', | ||
38 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', | ||
39 | 'w', 'x', 'y', 'z', '0', '1', '2', '3', | ||
40 | '4', '5', '6', '7', '8', '9', '+', '/', | ||
41 | '=' /* termination character */ | ||
42 | }; | ||
43 | |||
44 | static const char tbl_std[65] = { | ||
45 | '`', '!', '"', '#', '$', '%', '&', '\'', | ||
46 | '(', ')', '*', '+', ',', '-', '.', '/', | ||
47 | '0', '1', '2', '3', '4', '5', '6', '7', | ||
48 | '8', '9', ':', ';', '<', '=', '>', '?', | ||
49 | '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', | ||
50 | 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', | ||
51 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', | ||
52 | 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', | ||
53 | '`' /* termination character */ | ||
54 | }; | ||
55 | |||
56 | /* | ||
57 | * Encode the string S of length LENGTH to base64 format and place it | ||
58 | * to STORE. STORE will be 0-terminated, and must point to a writable | ||
59 | * buffer of at least 1+BASE64_LENGTH(length) bytes. | ||
60 | * where BASE64_LENGTH(len) = (4 * ((LENGTH + 2) / 3)) | ||
61 | */ | ||
62 | static void uuencode (const unsigned char *s, const char *store, const int length, const char *tbl) | ||
63 | { | ||
64 | int i; | ||
65 | unsigned char *p = (unsigned char *)store; | ||
66 | |||
67 | /* Transform the 3x8 bits to 4x6 bits, as required by base64. */ | ||
68 | for (i = 0; i < length; i += 3) { | ||
69 | *p++ = tbl[s[0] >> 2]; | ||
70 | *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)]; | ||
71 | *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)]; | ||
72 | *p++ = tbl[s[2] & 0x3f]; | ||
73 | s += 3; | ||
74 | } | ||
75 | /* Pad the result if necessary... */ | ||
76 | if (i == length + 1) { | ||
77 | *(p - 1) = tbl[64]; | ||
78 | } | ||
79 | else if (i == length + 2) { | ||
80 | *(p - 1) = *(p - 2) = tbl[64]; | ||
81 | } | ||
82 | /* ...and zero-terminate it. */ | ||
83 | *p = '\0'; | ||
84 | } | ||
85 | |||
86 | #define SRC_BUF_SIZE 45 // This *MUST* be a multiple of 3 | ||
87 | #define DST_BUF_SIZE 4 * ((SRC_BUF_SIZE + 2) / 3) | ||
88 | int uuencode_main(int argc, char **argv) | ||
89 | { | ||
90 | const int src_buf_size = SRC_BUF_SIZE; | ||
91 | const int dst_buf_size = DST_BUF_SIZE; | ||
92 | int write_size = dst_buf_size; | ||
93 | struct stat stat_buf; | ||
94 | FILE *src_stream = stdin; | ||
95 | const char *tbl; | ||
96 | size_t size; | ||
97 | mode_t mode; | ||
98 | RESERVE_CONFIG_BUFFER(src_buf, SRC_BUF_SIZE + 1); | ||
99 | RESERVE_CONFIG_BUFFER(dst_buf, DST_BUF_SIZE + 1); | ||
100 | |||
101 | tbl = tbl_std; | ||
102 | if (bb_getopt_ulflags(argc, argv, "m") & 1) { | ||
103 | tbl = tbl_base64; | ||
104 | } | ||
105 | |||
106 | switch (argc - optind) { | ||
107 | case 2: | ||
108 | src_stream = bb_xfopen(argv[optind], "r"); | ||
109 | if (stat(argv[optind], &stat_buf) < 0) { | ||
110 | bb_perror_msg_and_die("stat"); | ||
111 | } | ||
112 | mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); | ||
113 | if (src_stream == stdout) { | ||
114 | puts("NULL"); | ||
115 | } | ||
116 | break; | ||
117 | case 1: | ||
118 | mode = 0666 & ~umask(0666); | ||
119 | break; | ||
120 | default: | ||
121 | bb_show_usage(); | ||
122 | } | ||
123 | |||
124 | bb_printf("begin%s %o %s", tbl == tbl_std ? "" : "-base64", mode, argv[argc - 1]); | ||
125 | |||
126 | while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) { | ||
127 | if (size != src_buf_size) { | ||
128 | /* write_size is always 60 until the last line */ | ||
129 | write_size=(4 * ((size + 2) / 3)); | ||
130 | /* pad with 0s so we can just encode extra bits */ | ||
131 | memset(&src_buf[size], 0, src_buf_size - size); | ||
132 | } | ||
133 | /* Encode the buffer we just read in */ | ||
134 | uuencode(src_buf, dst_buf, size, tbl); | ||
135 | |||
136 | putchar('\n'); | ||
137 | if (tbl == tbl_std) { | ||
138 | putchar(tbl[size]); | ||
139 | } | ||
140 | if (fwrite(dst_buf, 1, write_size, stdout) != write_size) { | ||
141 | bb_perror_msg_and_die(bb_msg_write_error); | ||
142 | } | ||
143 | } | ||
144 | bb_printf(tbl == tbl_std ? "\n`\nend\n" : "\n====\n"); | ||
145 | |||
146 | bb_xferror(src_stream, "source"); /* TODO - Fix this! */ | ||
147 | |||
148 | bb_fflush_stdout_and_exit(EXIT_SUCCESS); | ||
149 | } | ||