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Diffstat (limited to 'source3/rpc_parse/parse_sec.c')
-rw-r--r--source3/rpc_parse/parse_sec.c436
1 files changed, 436 insertions, 0 deletions
diff --git a/source3/rpc_parse/parse_sec.c b/source3/rpc_parse/parse_sec.c
new file mode 100644
index 0000000000..c71b31086a
--- /dev/null
+++ b/source3/rpc_parse/parse_sec.c
@@ -0,0 +1,436 @@
+/*
+ * Unix SMB/Netbios implementation.
+ * Version 1.9.
+ * RPC Pipe client / server routines
+ * Copyright (C) Andrew Tridgell 1992-1998,
+ * Copyright (C) Jeremy R. Allison 1995-2005.
+ * Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
+ * Copyright (C) Paul Ashton 1997-1998.
+ *
+ * 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
+
+/*******************************************************************
+ Reads or writes a SEC_ACE structure.
+********************************************************************/
+
+static bool sec_io_ace(const char *desc, SEC_ACE *psa, prs_struct *ps,
+ int depth)
+{
+ uint32 old_offset;
+ uint32 offset_ace_size;
+ uint8 type;
+
+ if (psa == NULL)
+ return False;
+
+ prs_debug(ps, depth, desc, "sec_io_ace");
+ depth++;
+
+ old_offset = prs_offset(ps);
+
+ if (MARSHALLING(ps)) {
+ type = (uint8)psa->type;
+ }
+
+ if(!prs_uint8("type ", ps, depth, &type))
+ return False;
+
+ if (UNMARSHALLING(ps)) {
+ psa->type = (enum security_ace_type)type;
+ }
+
+ if(!prs_uint8("flags", ps, depth, &psa->flags))
+ return False;
+
+ if(!prs_uint16_pre("size ", ps, depth, &psa->size, &offset_ace_size))
+ return False;
+
+ if(!prs_uint32("access_mask", ps, depth, &psa->access_mask))
+ return False;
+
+ /* check whether object access is present */
+ if (!sec_ace_object(psa->type)) {
+ if (!smb_io_dom_sid("trustee ", &psa->trustee , ps, depth))
+ return False;
+ } else {
+ if (!prs_uint32("obj_flags", ps, depth, &psa->object.object.flags))
+ return False;
+
+ if (psa->object.object.flags & SEC_ACE_OBJECT_PRESENT)
+ if (!smb_io_uuid("obj_guid", &psa->object.object.type.type, ps,depth))
+ return False;
+
+ if (psa->object.object.flags & SEC_ACE_OBJECT_INHERITED_PRESENT)
+ if (!smb_io_uuid("inh_guid", &psa->object.object.inherited_type.inherited_type, ps,depth))
+ return False;
+
+ if(!smb_io_dom_sid("trustee ", &psa->trustee , ps, depth))
+ return False;
+ }
+
+ /* Theorectically an ACE can have a size greater than the
+ sum of its components. When marshalling, pad with extra null bytes up to the
+ correct size. */
+
+ if (MARSHALLING(ps) && (psa->size > prs_offset(ps) - old_offset)) {
+ uint32 extra_len = psa->size - (prs_offset(ps) - old_offset);
+ uint32 i;
+ uint8 c = 0;
+
+ for (i = 0; i < extra_len; i++) {
+ if (!prs_uint8("ace extra space", ps, depth, &c))
+ return False;
+ }
+ }
+
+ if(!prs_uint16_post("size ", ps, depth, &psa->size, offset_ace_size, old_offset))
+ return False;
+
+ return True;
+}
+
+/*******************************************************************
+ Reads or writes a SEC_ACL structure.
+
+ First of the xx_io_xx functions that allocates its data structures
+ for you as it reads them.
+********************************************************************/
+
+static bool sec_io_acl(const char *desc, SEC_ACL **ppsa, prs_struct *ps,
+ int depth)
+{
+ unsigned int i;
+ uint32 old_offset;
+ uint32 offset_acl_size;
+ SEC_ACL *psa;
+ uint16 revision;
+
+ /*
+ * Note that the size is always a multiple of 4 bytes due to the
+ * nature of the data structure. Therefore the prs_align() calls
+ * have been removed as they through us off when doing two-layer
+ * marshalling such as in the printing code (RPC_BUFFER). --jerry
+ */
+
+ if (ppsa == NULL)
+ return False;
+
+ psa = *ppsa;
+
+ if(UNMARSHALLING(ps) && psa == NULL) {
+ /*
+ * This is a read and we must allocate the stuct to read into.
+ */
+ if((psa = PRS_ALLOC_MEM(ps, SEC_ACL, 1)) == NULL)
+ return False;
+ *ppsa = psa;
+ }
+
+ prs_debug(ps, depth, desc, "sec_io_acl");
+ depth++;
+
+ old_offset = prs_offset(ps);
+
+ if (MARSHALLING(ps)) {
+ revision = (uint16)psa->revision;
+ }
+
+ if(!prs_uint16("revision", ps, depth, &revision))
+ return False;
+
+ if (UNMARSHALLING(ps)) {
+ psa->revision = (enum security_acl_revision)revision;
+ }
+
+ if(!prs_uint16_pre("size ", ps, depth, &psa->size, &offset_acl_size))
+ return False;
+
+ if(!prs_uint32("num_aces ", ps, depth, &psa->num_aces))
+ return False;
+
+ if (UNMARSHALLING(ps)) {
+ if (psa->num_aces) {
+ if((psa->aces = PRS_ALLOC_MEM(ps, SEC_ACE, psa->num_aces)) == NULL)
+ return False;
+ } else {
+ psa->aces = NULL;
+ }
+ }
+
+ for (i = 0; i < psa->num_aces; i++) {
+ fstring tmp;
+ slprintf(tmp, sizeof(tmp)-1, "ace_list[%02d]: ", i);
+ if(!sec_io_ace(tmp, &psa->aces[i], ps, depth))
+ return False;
+ }
+
+ /* Theorectically an ACL can have a size greater than the
+ sum of its components. When marshalling, pad with extra null bytes up to the
+ correct size. */
+
+ if (MARSHALLING(ps) && (psa->size > prs_offset(ps) - old_offset)) {
+ uint32 extra_len = psa->size - (prs_offset(ps) - old_offset);
+ uint8 c = 0;
+
+ for (i = 0; i < extra_len; i++) {
+ if (!prs_uint8("acl extra space", ps, depth, &c))
+ return False;
+ }
+ }
+
+ if(!prs_uint16_post("size ", ps, depth, &psa->size, offset_acl_size, old_offset))
+ return False;
+
+ return True;
+}
+
+/*******************************************************************
+ Reads or writes a SEC_DESC structure.
+ If reading and the *ppsd = NULL, allocates the structure.
+********************************************************************/
+
+bool sec_io_desc(const char *desc, SEC_DESC **ppsd, prs_struct *ps, int depth)
+{
+ uint32 old_offset;
+ uint32 max_offset = 0; /* after we're done, move offset to end */
+ uint32 tmp_offset = 0;
+ uint32 off_sacl, off_dacl, off_owner_sid, off_grp_sid;
+ uint16 revision;
+
+ SEC_DESC *psd;
+
+ if (ppsd == NULL)
+ return False;
+
+ psd = *ppsd;
+
+ if (psd == NULL) {
+ if(UNMARSHALLING(ps)) {
+ if((psd = PRS_ALLOC_MEM(ps,SEC_DESC,1)) == NULL)
+ return False;
+ *ppsd = psd;
+ } else {
+ /* Marshalling - just ignore. */
+ return True;
+ }
+ }
+
+ prs_debug(ps, depth, desc, "sec_io_desc");
+ depth++;
+
+ /* start of security descriptor stored for back-calc offset purposes */
+ old_offset = prs_offset(ps);
+
+ if (MARSHALLING(ps)) {
+ revision = (uint16)psd->revision;
+ }
+
+ if(!prs_uint16("revision", ps, depth, &revision))
+ return False;
+
+ if (UNMARSHALLING(ps)) {
+ psd->revision = (enum security_descriptor_revision)revision;
+ }
+
+ if(!prs_uint16("type ", ps, depth, &psd->type))
+ return False;
+
+ if (MARSHALLING(ps)) {
+ uint32 offset = SEC_DESC_HEADER_SIZE;
+
+ /*
+ * Work out the offsets here, as we write it out.
+ */
+
+ if (psd->sacl != NULL) {
+ off_sacl = offset;
+ offset += psd->sacl->size;
+ } else {
+ off_sacl = 0;
+ }
+
+ if (psd->dacl != NULL) {
+ off_dacl = offset;
+ offset += psd->dacl->size;
+ } else {
+ off_dacl = 0;
+ }
+
+ if (psd->owner_sid != NULL) {
+ off_owner_sid = offset;
+ offset += ndr_size_dom_sid(psd->owner_sid, 0);
+ } else {
+ off_owner_sid = 0;
+ }
+
+ if (psd->group_sid != NULL) {
+ off_grp_sid = offset;
+ offset += ndr_size_dom_sid(psd->group_sid, 0);
+ } else {
+ off_grp_sid = 0;
+ }
+ }
+
+ if(!prs_uint32("off_owner_sid", ps, depth, &off_owner_sid))
+ return False;
+
+ if(!prs_uint32("off_grp_sid ", ps, depth, &off_grp_sid))
+ return False;
+
+ if(!prs_uint32("off_sacl ", ps, depth, &off_sacl))
+ return False;
+
+ if(!prs_uint32("off_dacl ", ps, depth, &off_dacl))
+ return False;
+
+ max_offset = MAX(max_offset, prs_offset(ps));
+
+ if (off_owner_sid != 0) {
+
+ tmp_offset = prs_offset(ps);
+ if(!prs_set_offset(ps, old_offset + off_owner_sid))
+ return False;
+
+ if (UNMARSHALLING(ps)) {
+ /* reading */
+ if((psd->owner_sid = PRS_ALLOC_MEM(ps,DOM_SID,1)) == NULL)
+ return False;
+ }
+
+ if(!smb_io_dom_sid("owner_sid ", psd->owner_sid , ps, depth))
+ return False;
+
+ max_offset = MAX(max_offset, prs_offset(ps));
+
+ if (!prs_set_offset(ps,tmp_offset))
+ return False;
+ }
+
+ if (psd->group_sid != 0) {
+
+ tmp_offset = prs_offset(ps);
+ if(!prs_set_offset(ps, old_offset + off_grp_sid))
+ return False;
+
+ if (UNMARSHALLING(ps)) {
+ /* reading */
+ if((psd->group_sid = PRS_ALLOC_MEM(ps,DOM_SID,1)) == NULL)
+ return False;
+ }
+
+ if(!smb_io_dom_sid("grp_sid", psd->group_sid, ps, depth))
+ return False;
+
+ max_offset = MAX(max_offset, prs_offset(ps));
+
+ if (!prs_set_offset(ps,tmp_offset))
+ return False;
+ }
+
+ if ((psd->type & SEC_DESC_SACL_PRESENT) && off_sacl) {
+ tmp_offset = prs_offset(ps);
+ if(!prs_set_offset(ps, old_offset + off_sacl))
+ return False;
+ if(!sec_io_acl("sacl", &psd->sacl, ps, depth))
+ return False;
+ max_offset = MAX(max_offset, prs_offset(ps));
+ if (!prs_set_offset(ps,tmp_offset))
+ return False;
+ }
+
+ if ((psd->type & SEC_DESC_DACL_PRESENT) && off_dacl != 0) {
+ tmp_offset = prs_offset(ps);
+ if(!prs_set_offset(ps, old_offset + off_dacl))
+ return False;
+ if(!sec_io_acl("dacl", &psd->dacl, ps, depth))
+ return False;
+ max_offset = MAX(max_offset, prs_offset(ps));
+ if (!prs_set_offset(ps,tmp_offset))
+ return False;
+ }
+
+ if(!prs_set_offset(ps, max_offset))
+ return False;
+
+ return True;
+}
+
+/*******************************************************************
+ Reads or writes a SEC_DESC_BUF structure.
+********************************************************************/
+
+bool sec_io_desc_buf(const char *desc, SEC_DESC_BUF **ppsdb, prs_struct *ps, int depth)
+{
+ uint32 off_len;
+ uint32 off_max_len;
+ uint32 old_offset;
+ uint32 size;
+ uint32 len;
+ SEC_DESC_BUF *psdb;
+ uint32 ptr;
+
+ if (ppsdb == NULL)
+ return False;
+
+ psdb = *ppsdb;
+
+ if (UNMARSHALLING(ps) && psdb == NULL) {
+ if((psdb = PRS_ALLOC_MEM(ps,SEC_DESC_BUF,1)) == NULL)
+ return False;
+ *ppsdb = psdb;
+ }
+
+ prs_debug(ps, depth, desc, "sec_io_desc_buf");
+ depth++;
+
+ if(!prs_align(ps))
+ return False;
+
+ if(!prs_uint32_pre("max_len", ps, depth, &psdb->sd_size, &off_max_len))
+ return False;
+
+ ptr = 1;
+ if(!prs_uint32 ("ptr ", ps, depth, &ptr))
+ return False;
+
+ len = ndr_size_security_descriptor(psdb->sd, 0);
+ if(!prs_uint32_pre("len ", ps, depth, &len, &off_len))
+ return False;
+
+ old_offset = prs_offset(ps);
+
+ /* reading, length is non-zero; writing, descriptor is non-NULL */
+ if ((UNMARSHALLING(ps) && psdb->sd_size != 0) || (MARSHALLING(ps) && psdb->sd != NULL)) {
+ if(!sec_io_desc("sec ", &psdb->sd, ps, depth))
+ return False;
+ }
+
+ if(!prs_align(ps))
+ return False;
+
+ size = prs_offset(ps) - old_offset;
+ if(!prs_uint32_post("max_len", ps, depth, &psdb->sd_size, off_max_len, size == 0 ? psdb->sd_size : size))
+ return False;
+
+ if(!prs_uint32_post("len ", ps, depth, &len, off_len, size))
+ return False;
+
+ return True;
+}
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