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Annotation of embedaddon/libnet/src/libnet_build_rpc.c, revision 1.1.1.3

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: 
1.1.1.3 ! misho      33: #include "common.h"
1.1       misho      34: 
                     35: libnet_ptag_t
1.1.1.2   misho      36: libnet_build_rpc_call(uint32_t rm, uint32_t xid, uint32_t prog_num, 
                     37: uint32_t prog_vers, uint32_t procedure, uint32_t cflavor, uint32_t clength, 
                     38: uint8_t *cdata, uint32_t vflavor, uint32_t vlength, const uint8_t *vdata, 
                     39: const uint8_t *payload, uint32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
1.1       misho      40: {
1.1.1.2   misho      41:     uint32_t n, h;
1.1       misho      42:     libnet_pblock_t *p;
                     43:     struct libnet_rpc_call_tcp_hdr rpc_hdr;
                     44: 
                     45:     if (l == NULL)
                     46:     { 
                     47:         return (-1);
                     48:     } 
                     49: 
                     50:     /* Credential and Verifier buffers not yet implemented.
                     51:      * n = LIBNET_RPC_CALL_H + clength + vlength + payload_s;
                     52:      */
                     53: 
                     54:     if (rm)
                     55:     {
                     56:         n = LIBNET_RPC_CALL_TCP_H + payload_s;
                     57:     } 
                     58:     else
                     59:     {
                     60:         n = LIBNET_RPC_CALL_H + payload_s;
                     61:     }
                     62:  
                     63:     h = 0;
                     64: 
                     65:     /*
                     66:      *  Find the existing protocol block if a ptag is specified, or create
                     67:      *  a new one.
                     68:      */
                     69:     p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_RPC_CALL_H);
                     70:     if (p == NULL)
                     71:     {
                     72:         return (-1);
                     73:     }
                     74: 
                     75:     memset(&rpc_hdr, 0, sizeof(rpc_hdr));
                     76:     if (rm)
                     77:     {
                     78:        rpc_hdr.rpc_record_marking                 = htonl(rm + payload_s);
                     79:     }
                     80:     rpc_hdr.rpc_common.rpc_xid                    = htonl(xid);
                     81:     rpc_hdr.rpc_common.rpc_type                   = LIBNET_RPC_CALL;
                     82:     rpc_hdr.rpc_common.rpc_call.rpc_rpcvers       = htonl(LIBNET_RPC_VERS);
                     83:     rpc_hdr.rpc_common.rpc_call.rpc_prognum       = htonl(prog_num);
                     84:     rpc_hdr.rpc_common.rpc_call.rpc_vers          = htonl(prog_vers);
                     85:     rpc_hdr.rpc_common.rpc_call.rpc_procedure     = htonl(procedure);
                     86:     /*  XXX Eventually should allow for opaque auth data. */
                     87:     rpc_hdr.rpc_common.rpc_call.rpc_credentials.rpc_auth_flavor= htonl(cflavor);
                     88:     rpc_hdr.rpc_common.rpc_call.rpc_credentials.rpc_auth_length= htonl(clength);
                     89:     rpc_hdr.rpc_common.rpc_call.rpc_verifier.rpc_auth_flavor   = htonl(vflavor);
                     90:     rpc_hdr.rpc_common.rpc_call.rpc_verifier.rpc_auth_length   = htonl(vlength);
                     91: 
                     92:     if (rm)
                     93:     {
1.1.1.2   misho      94:         n = libnet_pblock_append(l, p, (uint8_t *)&rpc_hdr, 
1.1       misho      95:                 LIBNET_RPC_CALL_TCP_H);
                     96:     }
                     97:     else
                     98:     {
1.1.1.2   misho      99:         n = libnet_pblock_append(l, p, (uint8_t *)&rpc_hdr.rpc_common, 
1.1       misho     100:                 LIBNET_RPC_CALL_H);
                    101:     }
                    102: 
                    103:     if (n == -1)
                    104:     {
                    105:         goto bad;
                    106:     }
                    107:  
1.1.1.2   misho     108:     /* boilerplate payload sanity check / append macro */
                    109:     LIBNET_DO_PAYLOAD(l, p);
1.1       misho     110: 
                    111:     return (ptag ? ptag : libnet_pblock_update(l, p, h,
                    112:             LIBNET_PBLOCK_RPC_CALL_H));
                    113: bad:
                    114:     libnet_pblock_delete(l, p);
                    115:     return (-1);
                    116: }
                    117: 
1.1.1.3 ! misho     118: /**
        !           119:  * Local Variables:
        !           120:  *  indent-tabs-mode: nil
        !           121:  *  c-file-style: "stroustrup"
        !           122:  * End:
        !           123:  */