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author | Andrew Tridgell <tridge@samba.org> | 2003-12-13 02:20:40 +0000 |
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committer | Andrew Tridgell <tridge@samba.org> | 2003-12-13 02:20:40 +0000 |
commit | 340d9b71f9e75d634389104da5949ba59669ede2 (patch) | |
tree | 1bc2c22f57eade574841d8e4d9f3f5a5ff1c1022 /source4/rpc_server/handles.c | |
parent | f7065cc0a5555a32499908a499f926ede3f7d851 (diff) | |
download | samba-340d9b71f9e75d634389104da5949ba59669ede2.tar.gz samba-340d9b71f9e75d634389104da5949ba59669ede2.tar.bz2 samba-340d9b71f9e75d634389104da5949ba59669ede2.zip |
added a basic dcerpc endpoint mapper to Samba4. Currently only
implements the epm_Lookup() call, I'll add the other important calls
soon. I was rather pleased to find that epm_Lookup() worked first
time, which is particularly surprising given its complexity.
This required quite a bit of new infrastructure:
* a generic way of handling dcerpc policy handles in the rpc server
* added type checked varients of talloc. These are much less error
prone. I'd like to move to using these for nearly all uses of
talloc.
* added more dcerpc fault handling code, and translation from
NTSTATUS to a dcerpc fault code
* added data_blob_talloc_zero() for allocating an initially zero
blob
* added a endpoint enumeration hook in the dcerpc endpoint server
operations
(This used to be commit 3f85f9b782dc17417baf1ca557fcae22f5b6a83a)
Diffstat (limited to 'source4/rpc_server/handles.c')
-rw-r--r-- | source4/rpc_server/handles.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/source4/rpc_server/handles.c b/source4/rpc_server/handles.c new file mode 100644 index 0000000000..16e4175184 --- /dev/null +++ b/source4/rpc_server/handles.c @@ -0,0 +1,92 @@ +/* + Unix SMB/CIFS implementation. + + server side dcerpc handle code + + Copyright (C) Andrew Tridgell 2003 + + 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 2 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" + +/* + allocate a new rpc handle +*/ +struct dcesrv_handle *dcesrv_handle_new(struct dcesrv_state *dce, + uint8 handle_type) +{ + TALLOC_CTX *mem_ctx; + struct dcesrv_handle *h; + + mem_ctx = talloc_init("rpc handle type %d\n", handle_type); + if (!mem_ctx) { + return NULL; + } + h = talloc(mem_ctx, sizeof(*h)); + if (!h) { + talloc_destroy(mem_ctx); + return NULL; + } + h->mem_ctx = mem_ctx; + h->data = NULL; + + memset(h->wire_handle.data, 'H', sizeof(h->wire_handle.data)); + strncpy(h->wire_handle.data, dce->ndr->name, 11); + h->wire_handle.data[11] = handle_type; + + /* TODO: check for wraparound here */ + SIVAL(&h->wire_handle.data, 12, random()); + SIVAL(&h->wire_handle.data, 16, dce->next_handle); + dce->next_handle++; + + DLIST_ADD(dce->handles, h); + + return h; +} + +/* + destroy a rpc handle +*/ +void dcesrv_handle_destroy(struct dcesrv_state *dce, + struct dcesrv_handle *h) +{ + DLIST_REMOVE(dce->handles, h); + talloc_destroy(h->mem_ctx); +} + + +/* + find an internal handle given a wire handle. If the wire handle is NULL then + allocate a new handle +*/ +struct dcesrv_handle *dcesrv_handle_fetch(struct dcesrv_state *dce, + struct policy_handle *p, + uint8 handle_type) +{ + struct dcesrv_handle *h; + + if (all_zero(p->data, sizeof(p->data))) { + return dcesrv_handle_new(dce, handle_type); + } + + for (h=dce->handles; h; h=h->next) { + if (memcmp(h->wire_handle.data, p->data, sizeof(p->data)) == 0) { + return h; + } + } + + return NULL; +} |