2 Copyright (c) 2004 The Regents of the University of Michigan.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
9 1. Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in the
13 documentation and/or other materials provided with the distribution.
14 3. Neither the name of the University nor the names of its
15 contributors may be used to endorse or promote products derived
16 from this software without specific prior written permission.
18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
19 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
26 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef _WRITE_BYTES_H_
32 #define _WRITE_BYTES_H_
35 #include <sys/types.h>
36 #include <netinet/in.h> /* for ntohl */
39 write_bytes(char **ptr, const char *end, const void *arg, int arg_len)
41 char *p = *ptr, *arg_end;
43 arg_end = p + arg_len;
44 if (arg_end > end || arg_end < p)
46 memcpy(p, arg, arg_len);
51 #define WRITE_BYTES(p, end, arg) write_bytes(p, end, &arg, sizeof(arg))
54 write_buffer(char **p, char *end, gss_buffer_desc *arg)
56 if (WRITE_BYTES(p, end, arg->length))
58 if (*p + arg->length > end)
60 memcpy(*p, arg->value, arg->length);
66 get_bytes(char **ptr, const char *end, void *res, int len)
79 get_buffer(char **ptr, const char *end, gss_buffer_desc *res)
83 if (get_bytes(&p, end, &res->length, sizeof(res->length)))
88 if (!(res->value = malloc(res->length)))
90 memcpy(res->value, p, res->length);
96 xdr_get_u32(u_int32_t **ptr, const u_int32_t *end, u_int32_t *res)
98 if (get_bytes((char **)ptr, (char *)end, res, sizeof(res)))
105 xdr_get_buffer(u_int32_t **ptr, const u_int32_t *end, gss_buffer_desc *res)
109 if (xdr_get_u32(&p, end, &res->length))
111 q = p + ((res->length + 3) >> 2);
112 if (q > end || q < p)
114 if (!(res->value = malloc(res->length)))
116 memcpy(res->value, p, res->length);
122 xdr_write_u32(u_int32_t **ptr, const u_int32_t *end, u_int32_t arg)
127 return WRITE_BYTES((char **)ptr, (char *)end, tmp);
131 xdr_write_buffer(u_int32_t **ptr, const u_int32_t *end, gss_buffer_desc *arg)
133 if (xdr_write_u32(ptr, end, arg->length))
135 return write_bytes((char **)ptr, (char *)end, arg->value,
136 (arg->length + 3) & ~3);
139 #endif /* _WRITE_BYTES_H_ */