Mike Lockwood | 1305e95 | 2011-12-07 08:17:59 -0800 | [diff] [blame^] | 1 | /* $OpenBSD: uuencode.c,v 1.26 2010/08/31 11:54:45 djm Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2000 Markus Friedl. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 17 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 | */ |
| 25 | |
| 26 | #include "includes.h" |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | #include <netinet/in.h> |
| 30 | #include <resolv.h> |
| 31 | #include <stdio.h> |
| 32 | |
| 33 | #include "xmalloc.h" |
| 34 | #include "uuencode.h" |
| 35 | |
| 36 | /* |
| 37 | * Encode binary 'src' of length 'srclength', writing base64-encoded text |
| 38 | * to 'target' of size 'targsize'. Will always nul-terminate 'target'. |
| 39 | * Returns the number of bytes stored in 'target' or -1 on error (inc. |
| 40 | * 'targsize' too small). |
| 41 | */ |
| 42 | int |
| 43 | uuencode(const u_char *src, u_int srclength, |
| 44 | char *target, size_t targsize) |
| 45 | { |
| 46 | return __b64_ntop(src, srclength, target, targsize); |
| 47 | } |
| 48 | |
| 49 | /* |
| 50 | * Decode base64-encoded 'src' into buffer 'target' of 'targsize' bytes. |
| 51 | * Will skip leading and trailing whitespace. Returns the number of bytes |
| 52 | * stored in 'target' or -1 on error (inc. targsize too small). |
| 53 | */ |
| 54 | int |
| 55 | uudecode(const char *src, u_char *target, size_t targsize) |
| 56 | { |
| 57 | int len; |
| 58 | char *encoded, *p; |
| 59 | |
| 60 | /* copy the 'readonly' source */ |
| 61 | encoded = xstrdup(src); |
| 62 | /* skip whitespace and data */ |
| 63 | for (p = encoded; *p == ' ' || *p == '\t'; p++) |
| 64 | ; |
| 65 | for (; *p != '\0' && *p != ' ' && *p != '\t'; p++) |
| 66 | ; |
| 67 | /* and remove trailing whitespace because __b64_pton needs this */ |
| 68 | *p = '\0'; |
| 69 | len = __b64_pton(encoded, target, targsize); |
| 70 | xfree(encoded); |
| 71 | return len; |
| 72 | } |
| 73 | |
| 74 | void |
| 75 | dump_base64(FILE *fp, const u_char *data, u_int len) |
| 76 | { |
| 77 | char *buf; |
| 78 | int i, n; |
| 79 | |
| 80 | if (len > 65536) { |
| 81 | fprintf(fp, "dump_base64: len > 65536\n"); |
| 82 | return; |
| 83 | } |
| 84 | buf = xmalloc(2*len); |
| 85 | n = uuencode(data, len, buf, 2*len); |
| 86 | for (i = 0; i < n; i++) { |
| 87 | fprintf(fp, "%c", buf[i]); |
| 88 | if (i % 70 == 69) |
| 89 | fprintf(fp, "\n"); |
| 90 | } |
| 91 | if (i % 70 != 69) |
| 92 | fprintf(fp, "\n"); |
| 93 | xfree(buf); |
| 94 | } |