diff options
Diffstat (limited to 'libnet/src/libnet_build_rpc.c')
| -rw-r--r-- | libnet/src/libnet_build_rpc.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/libnet/src/libnet_build_rpc.c b/libnet/src/libnet_build_rpc.c new file mode 100644 index 0000000..386280d --- /dev/null +++ b/libnet/src/libnet_build_rpc.c @@ -0,0 +1,138 @@ +/* + * + * libnet + * libnet_build_rpc.c - RPC packet assembler + * + * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com> + * Jason Damron <jdamron@stackheap.org> + * 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. + * + */ + +#if (HAVE_CONFIG_H) +#include "../include/config.h" +#endif +#if (!(_WIN32) || (__CYGWIN__)) +#include "../include/libnet.h" +#else +#include "../include/win32/libnet.h" +#endif + +libnet_ptag_t +libnet_build_rpc_call(u_int32_t rm, u_int32_t xid, u_int32_t prog_num, +u_int32_t prog_vers, u_int32_t procedure, u_int32_t cflavor, u_int32_t clength, +u_int8_t *cdata, u_int32_t vflavor, u_int32_t vlength, u_int8_t *vdata, +u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag) +{ + u_int32_t n, h; + libnet_pblock_t *p; + struct libnet_rpc_call_tcp_hdr rpc_hdr; + + if (l == NULL) + { + return (-1); + } + + /* Credential and Verifier buffers not yet implemented. + * n = LIBNET_RPC_CALL_H + clength + vlength + payload_s; + */ + + if (rm) + { + n = LIBNET_RPC_CALL_TCP_H + payload_s; + } + else + { + n = LIBNET_RPC_CALL_H + payload_s; + } + + h = 0; + + /* + * Find the existing protocol block if a ptag is specified, or create + * a new one. + */ + p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_RPC_CALL_H); + if (p == NULL) + { + return (-1); + } + + memset(&rpc_hdr, 0, sizeof(rpc_hdr)); + if (rm) + { + rpc_hdr.rpc_record_marking = htonl(rm + payload_s); + } + rpc_hdr.rpc_common.rpc_xid = htonl(xid); + rpc_hdr.rpc_common.rpc_type = LIBNET_RPC_CALL; + rpc_hdr.rpc_common.rpc_call.rpc_rpcvers = htonl(LIBNET_RPC_VERS); + rpc_hdr.rpc_common.rpc_call.rpc_prognum = htonl(prog_num); + rpc_hdr.rpc_common.rpc_call.rpc_vers = htonl(prog_vers); + rpc_hdr.rpc_common.rpc_call.rpc_procedure = htonl(procedure); + /* XXX Eventually should allow for opaque auth data. */ + rpc_hdr.rpc_common.rpc_call.rpc_credentials.rpc_auth_flavor= htonl(cflavor); + rpc_hdr.rpc_common.rpc_call.rpc_credentials.rpc_auth_length= htonl(clength); + rpc_hdr.rpc_common.rpc_call.rpc_verifier.rpc_auth_flavor = htonl(vflavor); + rpc_hdr.rpc_common.rpc_call.rpc_verifier.rpc_auth_length = htonl(vlength); + + if (rm) + { + n = libnet_pblock_append(l, p, (u_int8_t *)&rpc_hdr, + LIBNET_RPC_CALL_TCP_H); + } + else + { + n = libnet_pblock_append(l, p, (u_int8_t *)&rpc_hdr.rpc_common, + LIBNET_RPC_CALL_H); + } + + if (n == -1) + { + goto bad; + } + + if ((payload && !payload_s) || (!payload && payload_s)) + { + snprintf(l->err_buf, LIBNET_ERRBUF_SIZE, + "%s(): payload inconsistency\n", __func__); + goto bad; + } + + if (payload && payload_s) + { + n = libnet_pblock_append(l, p, payload, payload_s); + if (n == -1) + { + goto bad; + } + } + + return (ptag ? ptag : libnet_pblock_update(l, p, h, + LIBNET_PBLOCK_RPC_CALL_H)); +bad: + libnet_pblock_delete(l, p); + return (-1); +} + +/* EOF */ |