Annotation of embedaddon/libnet/src/libnet_build_rpc.c, revision 1.1.1.1
1.1 misho 1: /*
2: *
3: * libnet
4: * libnet_build_rpc.c - RPC packet assembler
5: *
6: * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
7: * Jason Damron <jdamron@stackheap.org>
8: * All rights reserved.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: *
31: */
32:
33: #if (HAVE_CONFIG_H)
34: #include "../include/config.h"
35: #endif
36: #if (!(_WIN32) || (__CYGWIN__))
37: #include "../include/libnet.h"
38: #else
39: #include "../include/win32/libnet.h"
40: #endif
41:
42: libnet_ptag_t
43: libnet_build_rpc_call(u_int32_t rm, u_int32_t xid, u_int32_t prog_num,
44: u_int32_t prog_vers, u_int32_t procedure, u_int32_t cflavor, u_int32_t clength,
45: u_int8_t *cdata, u_int32_t vflavor, u_int32_t vlength, u_int8_t *vdata,
46: u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
47: {
48: u_int32_t n, h;
49: libnet_pblock_t *p;
50: struct libnet_rpc_call_tcp_hdr rpc_hdr;
51:
52: if (l == NULL)
53: {
54: return (-1);
55: }
56:
57: /* Credential and Verifier buffers not yet implemented.
58: * n = LIBNET_RPC_CALL_H + clength + vlength + payload_s;
59: */
60:
61: if (rm)
62: {
63: n = LIBNET_RPC_CALL_TCP_H + payload_s;
64: }
65: else
66: {
67: n = LIBNET_RPC_CALL_H + payload_s;
68: }
69:
70: h = 0;
71:
72: /*
73: * Find the existing protocol block if a ptag is specified, or create
74: * a new one.
75: */
76: p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_RPC_CALL_H);
77: if (p == NULL)
78: {
79: return (-1);
80: }
81:
82: memset(&rpc_hdr, 0, sizeof(rpc_hdr));
83: if (rm)
84: {
85: rpc_hdr.rpc_record_marking = htonl(rm + payload_s);
86: }
87: rpc_hdr.rpc_common.rpc_xid = htonl(xid);
88: rpc_hdr.rpc_common.rpc_type = LIBNET_RPC_CALL;
89: rpc_hdr.rpc_common.rpc_call.rpc_rpcvers = htonl(LIBNET_RPC_VERS);
90: rpc_hdr.rpc_common.rpc_call.rpc_prognum = htonl(prog_num);
91: rpc_hdr.rpc_common.rpc_call.rpc_vers = htonl(prog_vers);
92: rpc_hdr.rpc_common.rpc_call.rpc_procedure = htonl(procedure);
93: /* XXX Eventually should allow for opaque auth data. */
94: rpc_hdr.rpc_common.rpc_call.rpc_credentials.rpc_auth_flavor= htonl(cflavor);
95: rpc_hdr.rpc_common.rpc_call.rpc_credentials.rpc_auth_length= htonl(clength);
96: rpc_hdr.rpc_common.rpc_call.rpc_verifier.rpc_auth_flavor = htonl(vflavor);
97: rpc_hdr.rpc_common.rpc_call.rpc_verifier.rpc_auth_length = htonl(vlength);
98:
99: if (rm)
100: {
101: n = libnet_pblock_append(l, p, (u_int8_t *)&rpc_hdr,
102: LIBNET_RPC_CALL_TCP_H);
103: }
104: else
105: {
106: n = libnet_pblock_append(l, p, (u_int8_t *)&rpc_hdr.rpc_common,
107: LIBNET_RPC_CALL_H);
108: }
109:
110: if (n == -1)
111: {
112: goto bad;
113: }
114:
115: if ((payload && !payload_s) || (!payload && payload_s))
116: {
117: snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
118: "%s(): payload inconsistency\n", __func__);
119: goto bad;
120: }
121:
122: if (payload && payload_s)
123: {
124: n = libnet_pblock_append(l, p, payload, payload_s);
125: if (n == -1)
126: {
127: goto bad;
128: }
129: }
130:
131: return (ptag ? ptag : libnet_pblock_update(l, p, h,
132: LIBNET_PBLOCK_RPC_CALL_H));
133: bad:
134: libnet_pblock_delete(l, p);
135: return (-1);
136: }
137:
138: /* EOF */
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