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author | dfr <dfr@FreeBSD.org> | 2008-05-07 13:53:12 +0000 |
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committer | dfr <dfr@FreeBSD.org> | 2008-05-07 13:53:12 +0000 |
commit | be0348cb75cae58cd1683f6fdbff884cb9bc405b (patch) | |
tree | 1338a6c0e5d3e7c3b0da720ac15cd79fc72c6b5a /lib/libgssapi/gss_encapsulate_token.c | |
parent | 52bf09d8197dd1ec84e1ab72684f2058f0eae9e1 (diff) | |
download | FreeBSD-src-be0348cb75cae58cd1683f6fdbff884cb9bc405b.zip FreeBSD-src-be0348cb75cae58cd1683f6fdbff884cb9bc405b.tar.gz |
Fix conflicts after heimdal-1.1 import and add build infrastructure. Import
all non-style changes made by heimdal to our own libgssapi.
Diffstat (limited to 'lib/libgssapi/gss_encapsulate_token.c')
-rw-r--r-- | lib/libgssapi/gss_encapsulate_token.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/lib/libgssapi/gss_encapsulate_token.c b/lib/libgssapi/gss_encapsulate_token.c new file mode 100644 index 0000000..ed0e217 --- /dev/null +++ b/lib/libgssapi/gss_encapsulate_token.c @@ -0,0 +1,131 @@ +/*- + * Copyright (c) 2008 Doug Rabson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <gssapi/gssapi.h> +#include <stdlib.h> +#include <string.h> + +#include "utils.h" + +OM_uint32 +gss_encapsulate_token(const gss_buffer_t input_token, gss_OID oid, + gss_buffer_t output_token) +{ + unsigned char *p; + size_t len, inside_len; + size_t a, b; + int i; + + _gss_buffer_zero(output_token); + + /* + * First time around, we calculate the size, second time, we + * encode the token. + */ + p = 0; + for (i = 0; i < 2; i++) { + len = 0; + + /* + * Token starts with [APPLICATION 0] SEQUENCE. + */ + if (p) + *p++ = 0x60; + len++; + + /* + * The length embedded in the token is the space + * needed for the encapsulated oid plus the length of + * the inner token. + */ + if (oid->length > 127) + return (GSS_S_DEFECTIVE_TOKEN); + + inside_len = 2 + oid->length + input_token->length; + + /* + * Figure out how to encode the length + */ + if (inside_len < 128) { + if (p) + *p++ = inside_len; + len++; + } else { + b = 1; + if (inside_len >= 0x100) + b++; + if (inside_len >= 0x10000) + b++; + if (inside_len >= 0x1000000) + b++; + if (p) + *p++ = b | 0x80; + len++; + a = inside_len << 8*(4 - b); + while (b) { + if (p) + *p++ = (a >> 24); + a <<= 8; + len++; + b--; + } + } + + /* + * Encode the OID for the mechanism. Simplify life by + * assuming that the OID length is less than 128 bytes. + */ + if (p) + *p++ = 0x06; + len++; + if (p) + *p++ = oid->length; + len++; + if (p) { + memcpy(p, oid->elements, oid->length); + p += oid->length; + } + len += oid->length; + + if (p) { + memcpy(p, input_token->value, input_token->length); + p += input_token->length; + } + len += input_token->length; + + if (i == 0) { + output_token->length = len; + output_token->value = malloc(len); + if (!output_token->value) + return (GSS_S_DEFECTIVE_TOKEN); + p = output_token->value; + } + } + + return (GSS_S_COMPLETE); +} |