diff options
Diffstat (limited to 'source3/rpc_parse/parse_rpc.c')
| -rw-r--r-- | source3/rpc_parse/parse_rpc.c | 651 |
1 files changed, 651 insertions, 0 deletions
diff --git a/source3/rpc_parse/parse_rpc.c b/source3/rpc_parse/parse_rpc.c new file mode 100644 index 0000000000..1477a4c81e --- /dev/null +++ b/source3/rpc_parse/parse_rpc.c @@ -0,0 +1,651 @@ +/* + * Unix SMB/CIFS implementation. + * RPC Pipe client / server routines + * Copyright (C) Andrew Tridgell 1992-1997, + * Copyright (C) Luke Kenneth Casson Leighton 1996-1997, + * Copyright (C) Paul Ashton 1997. + * Copyright (C) Jeremy Allison 1999. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "includes.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_RPC_PARSE + +/******************************************************************* + Inits an RPC_HDR structure. +********************************************************************/ + +void init_rpc_hdr(RPC_HDR *hdr, enum RPC_PKT_TYPE pkt_type, uint8 flags, + uint32 call_id, int data_len, int auth_len) +{ + hdr->major = 5; /* RPC version 5 */ + hdr->minor = 0; /* minor version 0 */ + hdr->pkt_type = pkt_type; /* RPC packet type */ + hdr->flags = flags; /* dce/rpc flags */ + hdr->pack_type[0] = 0x10; /* little-endian data representation */ + hdr->pack_type[1] = 0; /* packed data representation */ + hdr->pack_type[2] = 0; /* packed data representation */ + hdr->pack_type[3] = 0; /* packed data representation */ + hdr->frag_len = data_len; /* fragment length, fill in later */ + hdr->auth_len = auth_len; /* authentication length */ + hdr->call_id = call_id; /* call identifier - match incoming RPC */ +} + +/******************************************************************* + Reads or writes an RPC_HDR structure. +********************************************************************/ + +bool smb_io_rpc_hdr(const char *desc, RPC_HDR *rpc, prs_struct *ps, int depth) +{ + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr"); + depth++; + + if(!prs_uint8 ("major ", ps, depth, &rpc->major)) + return False; + + if(!prs_uint8 ("minor ", ps, depth, &rpc->minor)) + return False; + if(!prs_uint8 ("pkt_type ", ps, depth, &rpc->pkt_type)) + return False; + if(!prs_uint8 ("flags ", ps, depth, &rpc->flags)) + return False; + + /* We always marshall in little endian format. */ + if (MARSHALLING(ps)) + rpc->pack_type[0] = 0x10; + + if(!prs_uint8("pack_type0", ps, depth, &rpc->pack_type[0])) + return False; + if(!prs_uint8("pack_type1", ps, depth, &rpc->pack_type[1])) + return False; + if(!prs_uint8("pack_type2", ps, depth, &rpc->pack_type[2])) + return False; + if(!prs_uint8("pack_type3", ps, depth, &rpc->pack_type[3])) + return False; + + /* + * If reading and pack_type[0] == 0 then the data is in big-endian + * format. Set the flag in the prs_struct to specify reverse-endainness. + */ + + if (UNMARSHALLING(ps) && rpc->pack_type[0] == 0) { + DEBUG(10,("smb_io_rpc_hdr: PDU data format is big-endian. Setting flag.\n")); + prs_set_endian_data(ps, RPC_BIG_ENDIAN); + } + + if(!prs_uint16("frag_len ", ps, depth, &rpc->frag_len)) + return False; + if(!prs_uint16("auth_len ", ps, depth, &rpc->auth_len)) + return False; + if(!prs_uint32("call_id ", ps, depth, &rpc->call_id)) + return False; + return True; +} + +/******************************************************************* + Reads or writes an RPC_IFACE structure. +********************************************************************/ + +static bool smb_io_rpc_iface(const char *desc, RPC_IFACE *ifc, prs_struct *ps, int depth) +{ + if (ifc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_iface"); + depth++; + + if (!prs_align(ps)) + return False; + + if (!smb_io_uuid( "uuid", &ifc->uuid, ps, depth)) + return False; + + if(!prs_uint32 ("version", ps, depth, &ifc->if_version)) + return False; + + return True; +} + +/******************************************************************* + Inits an RPC_ADDR_STR structure. +********************************************************************/ + +static void init_rpc_addr_str(RPC_ADDR_STR *str, const char *name) +{ + str->len = strlen(name) + 1; + fstrcpy(str->str, name); +} + +/******************************************************************* + Reads or writes an RPC_ADDR_STR structure. +********************************************************************/ + +static bool smb_io_rpc_addr_str(const char *desc, RPC_ADDR_STR *str, prs_struct *ps, int depth) +{ + if (str == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_addr_str"); + depth++; + if(!prs_align(ps)) + return False; + + if(!prs_uint16 ( "len", ps, depth, &str->len)) + return False; + if(!prs_uint8s (True, "str", ps, depth, (uchar*)str->str, MIN(str->len, sizeof(str->str)) )) + return False; + return True; +} + +/******************************************************************* + Inits an RPC_HDR_BBA structure. +********************************************************************/ + +static void init_rpc_hdr_bba(RPC_HDR_BBA *bba, uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid) +{ + bba->max_tsize = max_tsize; /* maximum transmission fragment size (0x1630) */ + bba->max_rsize = max_rsize; /* max receive fragment size (0x1630) */ + bba->assoc_gid = assoc_gid; /* associated group id (0x0) */ +} + +/******************************************************************* + Reads or writes an RPC_HDR_BBA structure. +********************************************************************/ + +static bool smb_io_rpc_hdr_bba(const char *desc, RPC_HDR_BBA *rpc, prs_struct *ps, int depth) +{ + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_bba"); + depth++; + + if(!prs_uint16("max_tsize", ps, depth, &rpc->max_tsize)) + return False; + if(!prs_uint16("max_rsize", ps, depth, &rpc->max_rsize)) + return False; + if(!prs_uint32("assoc_gid", ps, depth, &rpc->assoc_gid)) + return False; + return True; +} + +/******************************************************************* + Inits an RPC_CONTEXT structure. + Note the transfer pointer must remain valid until this is marshalled. +********************************************************************/ + +void init_rpc_context(RPC_CONTEXT *rpc_ctx, uint16 context_id, + const RPC_IFACE *abstract, const RPC_IFACE *transfer) +{ + rpc_ctx->context_id = context_id ; /* presentation context identifier (0x0) */ + rpc_ctx->num_transfer_syntaxes = 1 ; /* the number of syntaxes (has always been 1?)(0x1) */ + + /* num and vers. of interface client is using */ + rpc_ctx->abstract = *abstract; + + /* vers. of interface to use for replies */ + rpc_ctx->transfer = CONST_DISCARD(RPC_IFACE *, transfer); +} + +/******************************************************************* + Inits an RPC_HDR_RB structure. + Note the context pointer must remain valid until this is marshalled. +********************************************************************/ + +void init_rpc_hdr_rb(RPC_HDR_RB *rpc, + uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid, + RPC_CONTEXT *context) +{ + init_rpc_hdr_bba(&rpc->bba, max_tsize, max_rsize, assoc_gid); + + rpc->num_contexts = 1; + rpc->rpc_context = context; +} + +/******************************************************************* + Reads or writes an RPC_CONTEXT structure. +********************************************************************/ + +bool smb_io_rpc_context(const char *desc, RPC_CONTEXT *rpc_ctx, prs_struct *ps, int depth) +{ + int i; + + if (rpc_ctx == NULL) + return False; + + if(!prs_align(ps)) + return False; + if(!prs_uint16("context_id ", ps, depth, &rpc_ctx->context_id )) + return False; + if(!prs_uint8 ("num_transfer_syntaxes", ps, depth, &rpc_ctx->num_transfer_syntaxes)) + return False; + + /* num_transfer_syntaxes must not be zero. */ + if (rpc_ctx->num_transfer_syntaxes == 0) + return False; + + if(!smb_io_rpc_iface("", &rpc_ctx->abstract, ps, depth)) + return False; + + if (UNMARSHALLING(ps)) { + if (!(rpc_ctx->transfer = PRS_ALLOC_MEM(ps, RPC_IFACE, rpc_ctx->num_transfer_syntaxes))) { + return False; + } + } + + for (i = 0; i < rpc_ctx->num_transfer_syntaxes; i++ ) { + if (!smb_io_rpc_iface("", &rpc_ctx->transfer[i], ps, depth)) + return False; + } + return True; +} + +/******************************************************************* + Reads or writes an RPC_HDR_RB structure. +********************************************************************/ + +bool smb_io_rpc_hdr_rb(const char *desc, RPC_HDR_RB *rpc, prs_struct *ps, int depth) +{ + int i; + + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_rb"); + depth++; + + if(!smb_io_rpc_hdr_bba("", &rpc->bba, ps, depth)) + return False; + + if(!prs_uint8("num_contexts", ps, depth, &rpc->num_contexts)) + return False; + + /* 3 pad bytes following - will be mopped up by the prs_align in smb_io_rpc_context(). */ + + /* num_contexts must not be zero. */ + if (rpc->num_contexts == 0) + return False; + + if (UNMARSHALLING(ps)) { + if (!(rpc->rpc_context = PRS_ALLOC_MEM(ps, RPC_CONTEXT, rpc->num_contexts))) { + return False; + } + } + + for (i = 0; i < rpc->num_contexts; i++ ) { + if (!smb_io_rpc_context("", &rpc->rpc_context[i], ps, depth)) + return False; + } + + return True; +} + +/******************************************************************* + Inits an RPC_RESULTS structure. + + lkclXXXX only one reason at the moment! +********************************************************************/ + +static void init_rpc_results(RPC_RESULTS *res, + uint8 num_results, uint16 result, uint16 reason) +{ + res->num_results = num_results; /* the number of results (0x01) */ + res->result = result ; /* result (0x00 = accept) */ + res->reason = reason ; /* reason (0x00 = no reason specified) */ +} + +/******************************************************************* + Reads or writes an RPC_RESULTS structure. + + lkclXXXX only one reason at the moment! +********************************************************************/ + +static bool smb_io_rpc_results(const char *desc, RPC_RESULTS *res, prs_struct *ps, int depth) +{ + if (res == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_results"); + depth++; + + if(!prs_align(ps)) + return False; + + if(!prs_uint8 ("num_results", ps, depth, &res->num_results)) + return False; + + if(!prs_align(ps)) + return False; + + if(!prs_uint16("result ", ps, depth, &res->result)) + return False; + if(!prs_uint16("reason ", ps, depth, &res->reason)) + return False; + return True; +} + +/******************************************************************* + Init an RPC_HDR_BA structure. + + lkclXXXX only one reason at the moment! + +********************************************************************/ + +void init_rpc_hdr_ba(RPC_HDR_BA *rpc, + uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid, + const char *pipe_addr, + uint8 num_results, uint16 result, uint16 reason, + RPC_IFACE *transfer) +{ + init_rpc_hdr_bba (&rpc->bba, max_tsize, max_rsize, assoc_gid); + init_rpc_addr_str(&rpc->addr, pipe_addr); + init_rpc_results (&rpc->res, num_results, result, reason); + + /* the transfer syntax from the request */ + memcpy(&rpc->transfer, transfer, sizeof(rpc->transfer)); +} + +/******************************************************************* + Reads or writes an RPC_HDR_BA structure. +********************************************************************/ + +bool smb_io_rpc_hdr_ba(const char *desc, RPC_HDR_BA *rpc, prs_struct *ps, int depth) +{ + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_ba"); + depth++; + + if(!smb_io_rpc_hdr_bba("", &rpc->bba, ps, depth)) + return False; + if(!smb_io_rpc_addr_str("", &rpc->addr, ps, depth)) + return False; + if(!smb_io_rpc_results("", &rpc->res, ps, depth)) + return False; + if(!smb_io_rpc_iface("", &rpc->transfer, ps, depth)) + return False; + return True; +} + +/******************************************************************* + Init an RPC_HDR_REQ structure. +********************************************************************/ + +void init_rpc_hdr_req(RPC_HDR_REQ *hdr, uint32 alloc_hint, uint16 opnum) +{ + hdr->alloc_hint = alloc_hint; /* allocation hint */ + hdr->context_id = 0; /* presentation context identifier */ + hdr->opnum = opnum; /* opnum */ +} + +/******************************************************************* + Reads or writes an RPC_HDR_REQ structure. +********************************************************************/ + +bool smb_io_rpc_hdr_req(const char *desc, RPC_HDR_REQ *rpc, prs_struct *ps, int depth) +{ + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_req"); + depth++; + + if(!prs_uint32("alloc_hint", ps, depth, &rpc->alloc_hint)) + return False; + if(!prs_uint16("context_id", ps, depth, &rpc->context_id)) + return False; + if(!prs_uint16("opnum ", ps, depth, &rpc->opnum)) + return False; + return True; +} + +/******************************************************************* + Reads or writes an RPC_HDR_RESP structure. +********************************************************************/ + +bool smb_io_rpc_hdr_resp(const char *desc, RPC_HDR_RESP *rpc, prs_struct *ps, int depth) +{ + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_resp"); + depth++; + + if(!prs_uint32("alloc_hint", ps, depth, &rpc->alloc_hint)) + return False; + if(!prs_uint16("context_id", ps, depth, &rpc->context_id)) + return False; + if(!prs_uint8 ("cancel_ct ", ps, depth, &rpc->cancel_count)) + return False; + if(!prs_uint8 ("reserved ", ps, depth, &rpc->reserved)) + return False; + return True; +} + +/******************************************************************* + Reads or writes an RPC_HDR_FAULT structure. +********************************************************************/ + +bool smb_io_rpc_hdr_fault(const char *desc, RPC_HDR_FAULT *rpc, prs_struct *ps, int depth) +{ + if (rpc == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_fault"); + depth++; + + if(!prs_dcerpc_status("status ", ps, depth, &rpc->status)) + return False; + if(!prs_uint32("reserved", ps, depth, &rpc->reserved)) + return False; + + return True; +} + +/******************************************************************* + Inits an RPC_HDR_AUTH structure. +********************************************************************/ + +void init_rpc_hdr_auth(RPC_HDR_AUTH *rai, + uint8 auth_type, uint8 auth_level, + uint8 auth_pad_len, + uint32 auth_context_id) +{ + rai->auth_type = auth_type; + rai->auth_level = auth_level; + rai->auth_pad_len = auth_pad_len; + rai->auth_reserved = 0; + rai->auth_context_id = auth_context_id; +} + +/******************************************************************* + Reads or writes an RPC_HDR_AUTH structure. +********************************************************************/ + +bool smb_io_rpc_hdr_auth(const char *desc, RPC_HDR_AUTH *rai, prs_struct *ps, int depth) +{ + if (rai == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_hdr_auth"); + depth++; + + if(!prs_align(ps)) + return False; + + if(!prs_uint8 ("auth_type ", ps, depth, &rai->auth_type)) + return False; + if(!prs_uint8 ("auth_level ", ps, depth, &rai->auth_level)) + return False; + if(!prs_uint8 ("auth_pad_len ", ps, depth, &rai->auth_pad_len)) + return False; + if(!prs_uint8 ("auth_reserved", ps, depth, &rai->auth_reserved)) + return False; + if(!prs_uint32("auth_context_id", ps, depth, &rai->auth_context_id)) + return False; + + return True; +} + +/******************************************************************* + Checks an RPC_AUTH_VERIFIER structure. +********************************************************************/ + +bool rpc_auth_verifier_chk(RPC_AUTH_VERIFIER *rav, + const char *signature, uint32 msg_type) +{ + return (strequal(rav->signature, signature) && rav->msg_type == msg_type); +} + +/******************************************************************* + Inits an RPC_AUTH_VERIFIER structure. +********************************************************************/ + +void init_rpc_auth_verifier(RPC_AUTH_VERIFIER *rav, + const char *signature, uint32 msg_type) +{ + fstrcpy(rav->signature, signature); /* "NTLMSSP" */ + rav->msg_type = msg_type; /* NTLMSSP_MESSAGE_TYPE */ +} + +/******************************************************************* + Reads or writes an RPC_AUTH_VERIFIER structure. +********************************************************************/ + +bool smb_io_rpc_auth_verifier(const char *desc, RPC_AUTH_VERIFIER *rav, prs_struct *ps, int depth) +{ + if (rav == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_auth_verifier"); + depth++; + + /* "NTLMSSP" */ + if(!prs_string("signature", ps, depth, rav->signature, + sizeof(rav->signature))) + return False; + if(!prs_uint32("msg_type ", ps, depth, &rav->msg_type)) /* NTLMSSP_MESSAGE_TYPE */ + return False; + + return True; +} + +/******************************************************************* + This parses an RPC_AUTH_VERIFIER for schannel. I think +********************************************************************/ + +bool smb_io_rpc_schannel_verifier(const char *desc, RPC_AUTH_VERIFIER *rav, prs_struct *ps, int depth) +{ + if (rav == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_schannel_verifier"); + depth++; + + if(!prs_string("signature", ps, depth, rav->signature, sizeof(rav->signature))) + return False; + if(!prs_uint32("msg_type ", ps, depth, &rav->msg_type)) + return False; + + return True; +} + +/******************************************************************* +creates an RPC_AUTH_SCHANNEL_NEG structure. +********************************************************************/ + +void init_rpc_auth_schannel_neg(RPC_AUTH_SCHANNEL_NEG *neg, + const char *domain, const char *myname) +{ + neg->type1 = 0; + neg->type2 = 0x3; + fstrcpy(neg->domain, domain); + fstrcpy(neg->myname, myname); +} + +/******************************************************************* + Reads or writes an RPC_AUTH_SCHANNEL_NEG structure. +********************************************************************/ + +bool smb_io_rpc_auth_schannel_neg(const char *desc, RPC_AUTH_SCHANNEL_NEG *neg, + prs_struct *ps, int depth) +{ + if (neg == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_auth_schannel_neg"); + depth++; + + if(!prs_align(ps)) + return False; + + if(!prs_uint32("type1", ps, depth, &neg->type1)) + return False; + if(!prs_uint32("type2", ps, depth, &neg->type2)) + return False; + if(!prs_string("domain ", ps, depth, neg->domain, sizeof(neg->domain))) + return False; + if(!prs_string("myname ", ps, depth, neg->myname, sizeof(neg->myname))) + return False; + + return True; +} + +/******************************************************************* +reads or writes an RPC_AUTH_SCHANNEL_CHK structure. +********************************************************************/ + +bool smb_io_rpc_auth_schannel_chk(const char *desc, int auth_len, + RPC_AUTH_SCHANNEL_CHK * chk, + prs_struct *ps, int depth) +{ + if (chk == NULL) + return False; + + prs_debug(ps, depth, desc, "smb_io_rpc_auth_schannel_chk"); + depth++; + + if ( !prs_uint8s(False, "sig ", ps, depth, chk->sig, sizeof(chk->sig)) ) + return False; + + if ( !prs_uint8s(False, "seq_num", ps, depth, chk->seq_num, sizeof(chk->seq_num)) ) + return False; + + if ( !prs_uint8s(False, "packet_digest", ps, depth, chk->packet_digest, sizeof(chk->packet_digest)) ) + return False; + + if ( auth_len == RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN ) { + if ( !prs_uint8s(False, "confounder", ps, depth, chk->confounder, sizeof(chk->confounder)) ) + return False; + } + + return True; +} + +const struct ndr_syntax_id syntax_spoolss = { + { + 0x12345678, 0x1234, 0xabcd, + { 0xef, 0x00 }, + { 0x01, 0x23, + 0x45, 0x67, 0x89, 0xab } + }, 0x01 +}; + |