Annotation of src/usr.bin/ssh/uuencode.c, Revision 1.26
1.26 ! djm 1: /* $OpenBSD: uuencode.c,v 1.25 2009/03/05 11:30:50 djm Exp $ */
1.1 markus 2: /*
1.4 markus 3: * Copyright (c) 2000 Markus Friedl. All rights reserved.
1.7 deraadt 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.
1.1 markus 24: */
1.7 deraadt 25:
1.22 stevesk 26: #include <sys/types.h>
27: #include <netinet/in.h>
28: #include <resolv.h>
1.23 stevesk 29: #include <stdio.h>
1.22 stevesk 30:
1.1 markus 31: #include "xmalloc.h"
1.10 itojun 32: #include "uuencode.h"
1.6 djm 33:
1.25 djm 34: /*
35: * Encode binary 'src' of length 'srclength', writing base64-encoded text
36: * to 'target' of size 'targsize'. Will always nul-terminate 'target'.
37: * Returns the number of bytes stored in 'target' or -1 on error (inc.
38: * 'targsize' too small).
39: */
1.1 markus 40: int
1.17 jakob 41: uuencode(const u_char *src, u_int srclength,
1.4 markus 42: char *target, size_t targsize)
1.1 markus 43: {
1.5 markus 44: return __b64_ntop(src, srclength, target, targsize);
1.1 markus 45: }
46:
1.25 djm 47: /*
48: * Decode base64-encoded 'src' into buffer 'target' of 'targsize' bytes.
49: * Will skip leading and trailing whitespace. Returns the number of bytes
50: * stored in 'target' or -1 on error (inc. targsize too small).
51: */
1.1 markus 52: int
1.8 markus 53: uudecode(const char *src, u_char *target, size_t targsize)
1.1 markus 54: {
1.5 markus 55: int len;
56: char *encoded, *p;
57:
58: /* copy the 'readonly' source */
59: encoded = xstrdup(src);
60: /* skip whitespace and data */
61: for (p = encoded; *p == ' ' || *p == '\t'; p++)
62: ;
63: for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
64: ;
1.13 markus 65: /* and remove trailing whitespace because __b64_pton needs this */
1.5 markus 66: *p = '\0';
67: len = __b64_pton(encoded, target, targsize);
68: xfree(encoded);
69: return len;
1.1 markus 70: }
71:
72: void
1.26 ! djm 73: dump_base64(FILE *fp, const u_char *data, u_int len)
1.1 markus 74: {
1.21 deraadt 75: char *buf;
1.1 markus 76: int i, n;
1.9 deraadt 77:
1.19 djm 78: if (len > 65536) {
79: fprintf(fp, "dump_base64: len > 65536\n");
80: return;
81: }
82: buf = xmalloc(2*len);
1.4 markus 83: n = uuencode(data, len, buf, 2*len);
1.1 markus 84: for (i = 0; i < n; i++) {
85: fprintf(fp, "%c", buf[i]);
86: if (i % 70 == 69)
87: fprintf(fp, "\n");
88: }
89: if (i % 70 != 69)
90: fprintf(fp, "\n");
91: xfree(buf);
92: }