Changeset 1770 in MondoRescue for branches/stable/mindi-busybox/coreutils/uuencode.c
- Timestamp:
- Nov 6, 2007, 11:01:53 AM (16 years ago)
- File:
-
- 1 edited
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branches/stable/mindi-busybox/coreutils/uuencode.c
r821 r1770 6 6 * Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc. 7 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. 8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. 21 9 */ 22 #include <stdio.h>23 #include <string.h>24 #include <stdlib.h>25 #include <sys/types.h>26 #include <sys/stat.h>27 #include <unistd.h>28 #include "busybox.h"29 10 30 /* Conversion table. for base 64 */ 31 static const char tbl_base64[65] = { 32 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 33 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 34 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 35 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 36 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 37 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 38 'w', 'x', 'y', 'z', '0', '1', '2', '3', 39 '4', '5', '6', '7', '8', '9', '+', '/', 40 '=' /* termination character */ 11 #include "libbb.h" 12 13 enum { 14 SRC_BUF_SIZE = 45, /* This *MUST* be a multiple of 3 */ 15 DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3), 41 16 }; 42 17 43 static const char tbl_std[65] = { 44 '`', '!', '"', '#', '$', '%', '&', '\'', 45 '(', ')', '*', '+', ',', '-', '.', '/', 46 '0', '1', '2', '3', '4', '5', '6', '7', 47 '8', '9', ':', ';', '<', '=', '>', '?', 48 '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 49 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 50 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 51 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', 52 '`' /* termination character */ 53 }; 54 55 /* 56 * Encode the string S of length LENGTH to base64 format and place it 57 * to STORE. STORE will be 0-terminated, and must point to a writable 58 * buffer of at least 1+BASE64_LENGTH(length) bytes. 59 * where BASE64_LENGTH(len) = (4 * ((LENGTH + 2) / 3)) 60 */ 61 static void uuencode (const unsigned char *s, char *store, const int length, const char *tbl) 62 { 63 int i; 64 char *p = store; 65 66 /* Transform the 3x8 bits to 4x6 bits, as required by base64. */ 67 for (i = 0; i < length; i += 3) { 68 *p++ = tbl[s[0] >> 2]; 69 *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)]; 70 *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)]; 71 *p++ = tbl[s[2] & 0x3f]; 72 s += 3; 73 } 74 /* Pad the result if necessary... */ 75 if (i == length + 1) { 76 *(p - 1) = tbl[64]; 77 } 78 else if (i == length + 2) { 79 *(p - 1) = *(p - 2) = tbl[64]; 80 } 81 /* ...and zero-terminate it. */ 82 *p = '\0'; 83 } 84 85 #define SRC_BUF_SIZE 45 // This *MUST* be a multiple of 3 86 #define DST_BUF_SIZE 4 * ((SRC_BUF_SIZE + 2) / 3) 18 int uuencode_main(int argc, char **argv); 87 19 int uuencode_main(int argc, char **argv) 88 20 { 89 const size_t src_buf_size = SRC_BUF_SIZE;90 const size_t dst_buf_size = DST_BUF_SIZE;91 size_t write_size = dst_buf_size;92 21 struct stat stat_buf; 93 FILE *src_stream = stdin;22 int src_fd = STDIN_FILENO; 94 23 const char *tbl; 95 size_t size;96 24 mode_t mode; 97 RESERVE_CONFIG_BUFFER(src_buf, SRC_BUF_SIZE + 1);98 RESERVE_CONFIG_BUFFER(dst_buf, DST_BUF_SIZE + 1);25 char src_buf[SRC_BUF_SIZE]; 26 char dst_buf[DST_BUF_SIZE + 1]; 99 27 100 tbl = tbl_std; 101 if (bb_getopt_ulflags(argc, argv, "m") & 1) { 102 tbl = tbl_base64; 28 tbl = bb_uuenc_tbl_std; 29 mode = 0666 & ~umask(0666); 30 opt_complementary = "-1:?2"; /* must have 1 or 2 args */ 31 if (getopt32(argv, "m")) { 32 tbl = bb_uuenc_tbl_base64; 33 } 34 argv += optind; 35 if (argc == optind + 2) { 36 src_fd = xopen(*argv, O_RDONLY); 37 fstat(src_fd, &stat_buf); 38 mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 39 argv++; 103 40 } 104 41 105 switch (argc - optind) { 106 case 2: 107 src_stream = bb_xfopen(argv[optind], "r"); 108 xstat(argv[optind], &stat_buf); 109 mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 110 if (src_stream == stdout) { 111 puts("NULL"); 112 } 42 printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv); 43 while (1) { 44 size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE); 45 if (!size) 113 46 break; 114 case 1: 115 mode = 0666 & ~umask(0666); 116 break; 117 default: 118 bb_show_usage(); 119 } 120 121 bb_printf("begin%s %o %s", tbl == tbl_std ? "" : "-base64", mode, argv[argc - 1]); 122 123 while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) { 124 if (size != src_buf_size) { 125 /* write_size is always 60 until the last line */ 126 write_size=(4 * ((size + 2) / 3)); 127 /* pad with 0s so we can just encode extra bits */ 128 memset(&src_buf[size], 0, src_buf_size - size); 129 } 47 if ((ssize_t)size < 0) 48 bb_perror_msg_and_die(bb_msg_read_error); 130 49 /* Encode the buffer we just read in */ 131 uuencode((unsigned char*)src_buf, dst_buf, size, tbl); 132 50 bb_uuencode(dst_buf, src_buf, size, tbl); 133 51 putchar('\n'); 134 if (tbl == tbl_std) {52 if (tbl == bb_uuenc_tbl_std) { 135 53 putchar(tbl[size]); 136 54 } 137 if (fwrite(dst_buf, 1, write_size, stdout) != write_size) { 138 bb_perror_msg_and_die(bb_msg_write_error); 139 } 55 fflush(stdout); 56 xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3)); 140 57 } 141 bb_printf(tbl ==tbl_std ? "\n`\nend\n" : "\n====\n");58 printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n"); 142 59 143 bb_xferror(src_stream, "source"); /* TODO - Fix this! */ 144 145 bb_fflush_stdout_and_exit(EXIT_SUCCESS); 60 fflush_stdout_and_exit(EXIT_SUCCESS); 146 61 }
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