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|
/*
Unix SMB/CIFS implementation.
Endpoint server for the epmapper pipe
Copyright (C) 2010-2011 Andreas Schneider <asn@samba.org>
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"
#include "../libcli/security/security.h"
#include "librpc/gen_ndr/ndr_epmapper.h"
#include "librpc/gen_ndr/srv_epmapper.h"
#include "srv_epmapper.h"
typedef uint32_t error_status_t;
/* An endpoint combined with an interface description */
struct dcesrv_ep_iface {
const char *name;
struct ndr_syntax_id syntax_id;
struct epm_tower ep;
};
/* A rpc service interface like samr, lsarpc or netlogon */
struct dcesrv_iface {
const char *name;
struct ndr_syntax_id syntax_id;
};
struct dcesrv_iface_list {
struct dcesrv_iface_list *next, *prev;
struct dcesrv_iface *iface;
};
/*
* An endpoint can serve multiple rpc services interfaces.
* For example \\pipe\netlogon can be used by lsarpc and netlogon.
*/
struct dcesrv_endpoint {
struct dcesrv_endpoint *next, *prev;
/* The type and the location of the endpoint */
struct dcerpc_binding *ep_description;
/* A list of rpc services able to connect to the endpoint */
struct dcesrv_iface_list *iface_list;
};
struct dcesrv_ep_entry_list {
struct dcesrv_ep_entry_list *next, *prev;
uint32_t num_ents;
struct epm_entry_t *entries;
};
struct rpc_eps {
struct dcesrv_ep_iface *e;
uint32_t count;
};
static struct dcesrv_endpoint *endpoint_table;
/*
* Check if the UUID and if_version match to an interface.
*/
static bool interface_match(const struct dcesrv_iface *if1,
const struct dcesrv_iface *if2)
{
return GUID_equal(&if1->syntax_id.uuid, &if2->syntax_id.uuid);
}
/*
* Find the interface operations on an endpoint.
*/
static const struct dcesrv_iface *find_interface(const struct dcesrv_endpoint *endpoint,
const struct dcesrv_iface *iface)
{
struct dcesrv_iface_list *iflist;
for (iflist = endpoint->iface_list; iflist; iflist = iflist->next) {
if (interface_match(iflist->iface, iface)) {
return iflist->iface;
}
}
return NULL;
}
/*
* See if a uuid and if_version match to an interface
*/
static bool interface_match_by_uuid(const struct dcesrv_iface *iface,
const struct GUID *uuid)
{
return GUID_equal(&iface->syntax_id.uuid, uuid);
}
static struct dcesrv_iface_list *find_interface_list(const struct dcesrv_endpoint *endpoint,
const struct dcesrv_iface *iface)
{
struct dcesrv_iface_list *iflist;
for (iflist = endpoint->iface_list; iflist; iflist = iflist->next) {
if (interface_match(iflist->iface, iface)) {
return iflist;
}
}
return NULL;
}
/*
* Check if two endpoints match.
*/
static bool endpoints_match(const struct dcerpc_binding *ep1,
const struct dcerpc_binding *ep2)
{
if (ep1->transport != ep2->transport) {
return false;
}
if (!ep1->endpoint || !ep2->endpoint) {
return ep1->endpoint == ep2->endpoint;
}
if (!strequal(ep1->endpoint, ep2->endpoint)) {
return false;
}
return true;
}
static struct dcesrv_endpoint *find_endpoint(struct dcesrv_endpoint *endpoint_list,
struct dcerpc_binding *ep_description) {
struct dcesrv_endpoint *ep;
for (ep = endpoint_list; ep != NULL; ep = ep->next) {
if (endpoints_match(ep->ep_description, ep_description)) {
return ep;
}
}
return NULL;
}
/*
* Build a list of all interfaces handled by all endpoint servers.
*/
static uint32_t build_ep_list(TALLOC_CTX *mem_ctx,
struct dcesrv_endpoint *endpoint_list,
const struct GUID *uuid,
const char *srv_addr,
struct dcesrv_ep_iface **peps)
{
struct dcesrv_ep_iface *eps = NULL;
struct dcesrv_endpoint *d;
uint32_t total = 0;
NTSTATUS status;
*peps = NULL;
for (d = endpoint_list; d != NULL; d = d->next) {
struct dcesrv_iface_list *iface;
struct dcerpc_binding *description;
for (iface = d->iface_list; iface != NULL; iface = iface->next) {
if (uuid && !interface_match_by_uuid(iface->iface, uuid)) {
continue;
}
eps = talloc_realloc(mem_ctx,
eps,
struct dcesrv_ep_iface,
total + 1);
if (eps == NULL) {
return 0;
}
eps[total].name = talloc_strdup(eps,
iface->iface->name);
eps[total].syntax_id = iface->iface->syntax_id;
description = d->ep_description;
description->object = iface->iface->syntax_id;
if (description->transport == NCACN_IP_TCP &&
srv_addr != NULL &&
strequal(description->host, "0.0.0.0")) {
description->host = srv_addr;
}
status = dcerpc_binding_build_tower(eps,
description,
&eps[total].ep);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Unable to build tower for %s\n",
iface->iface->name));
continue;
}
total++;
}
}
*peps = eps;
return total;
}
static bool is_priviledged_pipe(struct auth_serversupplied_info *info) {
/* If the user is not root, or has the system token, fail */
if ((info->utok.uid != sec_initial_uid()) &&
!security_token_is_system(info->security_token)) {
return false;
}
return true;
}
bool srv_epmapper_delete_endpoints(struct pipes_struct *p)
{
struct epm_Delete r;
struct dcesrv_ep_entry_list *el;
error_status_t result;
if (p->ep_entries == NULL) {
return true;
}
for (el = p->ep_entries;
el != NULL;
el = p->ep_entries) {
r.in.num_ents = el->num_ents;
r.in.entries = el->entries;
DEBUG(10, ("Delete_endpoints for: %s\n",
el->entries[0].annotation));
result = _epm_Delete(p, &r);
if (result != EPMAPPER_STATUS_OK) {
return false;
}
DLIST_REMOVE(p->ep_entries, el);
TALLOC_FREE(el);
}
return true;
}
void srv_epmapper_cleanup(void)
{
struct dcesrv_endpoint *ep;
for (ep = endpoint_table;
ep != NULL;
ep = endpoint_table) {
DLIST_REMOVE(endpoint_table, ep);
TALLOC_FREE(ep);
}
}
/*
* epm_Insert
*
* Add the specified entries to an endpoint map.
*/
error_status_t _epm_Insert(struct pipes_struct *p,
struct epm_Insert *r)
{
TALLOC_CTX *tmp_ctx;
error_status_t rc;
NTSTATUS status;
uint32_t i;
/* If this is not a priviledged users, return */
if (p->transport != NCALRPC ||
!is_priviledged_pipe(p->session_info)) {
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
tmp_ctx = talloc_stackframe();
if (tmp_ctx == NULL) {
return EPMAPPER_STATUS_NO_MEMORY;
}
DEBUG(3, ("_epm_Insert: Trying to add %u new entries.\n",
r->in.num_ents));
for (i = 0; i < r->in.num_ents; i++) {
struct dcerpc_binding *b = NULL;
struct dcesrv_endpoint *ep;
struct dcesrv_iface_list *iflist;
struct dcesrv_iface *iface;
bool add_ep = false;
status = dcerpc_binding_from_tower(tmp_ctx,
&r->in.entries[i].tower->tower,
&b);
if (!NT_STATUS_IS_OK(status)) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
DEBUG(3, ("_epm_Insert: Adding transport %s for %s\n",
derpc_transport_string_by_transport(b->transport),
r->in.entries[i].annotation));
/* Check if the entry already exits */
ep = find_endpoint(endpoint_table, b);
if (ep == NULL) {
/* No entry found, create it */
ep = talloc_zero(NULL, struct dcesrv_endpoint);
if (ep == NULL) {
rc = EPMAPPER_STATUS_CANT_PERFORM_OP;
goto done;
}
add_ep = true;
ep->ep_description = talloc_steal(ep, b);
}
/* TODO Replace the entry if the replace flag is set */
/* Create an interface */
iface = talloc(tmp_ctx, struct dcesrv_iface);
if (iface == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
iface->name = talloc_strdup(iface, r->in.entries[i].annotation);
if (iface->name == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
iface->syntax_id = b->object;
/*
* Check if the rpc service is alrady registered on the
* endpoint.
*/
if (find_interface(ep, iface) != NULL) {
DEBUG(0, ("dcesrv_interface_register: interface '%s' "
"already registered on endpoint\n",
iface->name));
/* FIXME wrong error code? */
rc = EPMAPPER_STATUS_OK;
goto done;
}
/* Create an entry for the interface */
iflist = talloc(ep, struct dcesrv_iface_list);
if (iflist == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
iflist->iface = talloc_move(iflist, &iface);
/* Finally add the interface on the endpoint */
DLIST_ADD(ep->iface_list, iflist);
/* If it's a new endpoint add it to the endpoint_table */
if (add_ep) {
DLIST_ADD(endpoint_table, ep);
}
}
if (r->in.num_ents > 0) {
struct dcesrv_ep_entry_list *el;
el = talloc_zero(p->mem_ctx, struct dcesrv_ep_entry_list);
if (el == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
el->num_ents = r->in.num_ents;
el->entries = talloc_move(el, &r->in.entries);
DLIST_ADD(p->ep_entries, el);
}
rc = EPMAPPER_STATUS_OK;
done:
talloc_free(tmp_ctx);
return rc;
}
/*
* epm_Delete
*
* Delete the specified entries from an endpoint map.
*/
error_status_t _epm_Delete(struct pipes_struct *p,
struct epm_Delete *r)
{
TALLOC_CTX *tmp_ctx;
error_status_t rc;
NTSTATUS status;
uint32_t i;
DEBUG(3, ("_epm_Delete: Trying to delete %u entries.\n",
r->in.num_ents));
/* If this is not a priviledged users, return */
if (p->transport != NCALRPC ||
!is_priviledged_pipe(p->session_info)) {
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
tmp_ctx = talloc_stackframe();
if (tmp_ctx == NULL) {
return EPMAPPER_STATUS_NO_MEMORY;
}
for (i = 0; i < r->in.num_ents; i++) {
struct dcerpc_binding *b = NULL;
struct dcesrv_endpoint *ep;
struct dcesrv_iface iface;
struct dcesrv_iface_list *iflist;
status = dcerpc_binding_from_tower(tmp_ctx,
&r->in.entries[i].tower->tower,
&b);
if (!NT_STATUS_IS_OK(status)) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
DEBUG(3, ("_epm_Delete: Deleting transport '%s' for '%s'\n",
derpc_transport_string_by_transport(b->transport),
r->in.entries[i].annotation));
ep = find_endpoint(endpoint_table, b);
if (ep == NULL) {
rc = EPMAPPER_STATUS_OK;
goto done;
}
iface.name = r->in.entries[i].annotation;
iface.syntax_id = b->object;
iflist = find_interface_list(ep, &iface);
if (iflist == NULL) {
DEBUG(0, ("_epm_Delete: No interfaces left, delete endpoint\n"));
DLIST_REMOVE(endpoint_table, ep);
talloc_free(ep);
rc = EPMAPPER_STATUS_OK;
goto done;
}
DLIST_REMOVE(ep->iface_list, iflist);
if (ep->iface_list == NULL) {
DEBUG(0, ("_epm_Delete: No interfaces left, delete endpoint\n"));
DLIST_REMOVE(endpoint_table, ep);
talloc_free(ep);
rc = EPMAPPER_STATUS_OK;
goto done;
}
}
rc = EPMAPPER_STATUS_OK;
done:
talloc_free(tmp_ctx);
return rc;
}
/*
* epm_Lookup
*
* Lookup entries in an endpoint map.
*/
error_status_t _epm_Lookup(struct pipes_struct *p,
struct epm_Lookup *r)
{
struct policy_handle *entry_handle;
struct rpc_eps *eps;
TALLOC_CTX *tmp_ctx;
error_status_t rc;
uint32_t count = 0;
uint32_t num_ents = 0;
uint32_t i;
bool match = false;
bool ok;
*r->out.num_ents = 0;
r->out.entries = NULL;
tmp_ctx = talloc_stackframe();
if (tmp_ctx == NULL) {
return EPMAPPER_STATUS_NO_MEMORY;
}
DEBUG(5, ("_epm_Lookup: Trying to lookup max. %u entries.\n",
r->in.max_ents));
if (r->in.entry_handle == NULL ||
policy_handle_empty(r->in.entry_handle)) {
struct GUID *obj;
DEBUG(7, ("_epm_Lookup: No entry_handle found, creating it.\n"));
eps = talloc_zero(tmp_ctx, struct rpc_eps);
if (eps == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
if (r->in.object == NULL || GUID_all_zero(r->in.object)) {
obj = NULL;
} else {
obj = r->in.object;
}
switch (r->in.inquiry_type) {
case RPC_C_EP_ALL_ELTS:
/*
* Return all elements from the endpoint map. The
* interface_id, vers_option, and object parameters MUST
* be ignored.
*/
eps->count = build_ep_list(eps,
endpoint_table,
NULL,
p->server_id == NULL ? NULL : p->server_id->addr,
&eps->e);
break;
case RPC_C_EP_MATCH_BY_IF:
/*
* Return endpoint map elements that contain the
* interface identifier specified by the interface_id
* and vers_option values.
*
* RPC_C_EP_MATCH_BY_IF and RPC_C_EP_MATCH_BY_BOTH
* need both the same endpoint list. There is a second
* check for the inquiry_type below which differentiates
* between them.
*/
case RPC_C_EP_MATCH_BY_BOTH:
/*
* Return endpoint map elements that contain the
* interface identifier and object UUID specified by
* interface_id, vers_option, and object.
*/
eps->count = build_ep_list(eps,
endpoint_table,
&r->in.interface_id->uuid,
p->server_id == NULL ? NULL : p->server_id->addr,
&eps->e);
break;
case RPC_C_EP_MATCH_BY_OBJ:
/*
* Return endpoint map elements that contain the object
* UUID specified by object.
*/
eps->count = build_ep_list(eps,
endpoint_table,
r->in.object,
p->server_id == NULL ? NULL : p->server_id->addr,
&eps->e);
break;
default:
rc = EPMAPPER_STATUS_CANT_PERFORM_OP;
goto done;
}
if (eps->count == 0) {
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
ok = create_policy_hnd(p, r->out.entry_handle, eps);
if (!ok) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
ok = find_policy_by_hnd(p, r->out.entry_handle, (void **)(void*) &eps);
if (!ok) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
entry_handle = r->out.entry_handle;
} else {
DEBUG(7, ("_epm_Lookup: Trying to find entry_handle.\n"));
ok = find_policy_by_hnd(p, r->in.entry_handle, (void **)(void*) &eps);
if (!ok) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
entry_handle = r->in.entry_handle;
}
if (eps == NULL || eps->e == NULL) {
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
/* return the next N elements */
count = r->in.max_ents;
if (count > eps->count) {
count = eps->count;
}
DEBUG(5, ("_epm_Lookup: Find %u entries\n", count));
if (count == 0) {
close_policy_hnd(p, entry_handle);
ZERO_STRUCTP(r->out.entry_handle);
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
r->out.entries = talloc_array(p->mem_ctx, struct epm_entry_t, count);
if (r->out.entries == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
for (i = 0; i < count; i++) {
match = false;
switch (r->in.inquiry_type) {
case RPC_C_EP_ALL_ELTS:
/*
* Return all elements from the endpoint map. The
* interface_id, vers_option, and object parameters MUST
* be ignored.
*/
match = true;
break;
case RPC_C_EP_MATCH_BY_IF:
/*
* Return endpoint map elements that contain the
* interface identifier specified by the interface_id
* and vers_option values.
*/
if (GUID_equal(&r->in.interface_id->uuid,
&eps->e[i].syntax_id.uuid)) {
match = true;
}
break;
case RPC_C_EP_MATCH_BY_OBJ:
/*
* Return endpoint map elements that contain the object
* UUID specified by object.
*/
if (GUID_equal(r->in.object,
&eps->e[i].syntax_id.uuid)) {
match = true;
}
break;
case RPC_C_EP_MATCH_BY_BOTH:
/*
* Return endpoint map elements that contain the
* interface identifier and object UUID specified by
* interface_id, vers_option, and object.
*/
if (GUID_equal(&r->in.interface_id->uuid,
&eps->e[i].syntax_id.uuid) &&
GUID_equal(r->in.object, &eps->e[i].syntax_id.uuid)) {
match = true;
}
break;
default:
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
if (match) {
if (r->in.inquiry_type == RPC_C_EP_MATCH_BY_IF ||
r->in.inquiry_type == RPC_C_EP_MATCH_BY_OBJ) {
/* Check inteface version */
match = false;
switch (r->in.vers_option) {
case RPC_C_VERS_ALL:
/*
* Return endpoint map elements that
* contain the specified interface UUID,
* regardless of the version numbers.
*/
match = true;
break;
case RPC_C_VERS_COMPATIBLE:
/*
* Return the endpoint map elements that
* contain the same major versions of
* the specified interface UUID and a
* minor version greater than or equal
* to the minor version of the specified
* UUID.
*/
if (r->in.interface_id->vers_major ==
(eps->e[i].syntax_id.if_version >> 16) &&
r->in.interface_id->vers_minor <=
(eps->e[i].syntax_id.if_version && 0xFFFF)) {
match = true;
}
break;
case RPC_C_VERS_EXACT:
/*
* Return endpoint map elements that
* contain the specified version of the
* specified interface UUID.
*/
if (r->in.interface_id->vers_major ==
(eps->e[i].syntax_id.if_version >> 16) &&
r->in.interface_id->vers_minor ==
(eps->e[i].syntax_id.if_version && 0xFFFF)) {
match = true;
}
match = true;
break;
case RPC_C_VERS_MAJOR_ONLY:
/*
* Return endpoint map elements that
* contain the same version of the
* specified interface UUID and ignore
* the minor version.
*/
if (r->in.interface_id->vers_major ==
(eps->e[i].syntax_id.if_version >> 16)) {
match = true;
}
match = true;
break;
case RPC_C_VERS_UPTO:
/*
* Return endpoint map elements that
* contain a version of the specified
* interface UUID less than or equal to
* the specified major and minor
* version.
*/
if (r->in.interface_id->vers_major >
eps->e[i].syntax_id.if_version >> 16) {
match = true;
} else {
if (r->in.interface_id->vers_major ==
(eps->e[i].syntax_id.if_version >> 16) &&
r->in.interface_id->vers_minor >=
(eps->e[i].syntax_id.if_version && 0xFFFF)) {
match = true;
}
}
break;
default:
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
}
}
if (match) {
ZERO_STRUCT(r->out.entries[num_ents].object);
DEBUG(10, ("_epm_Lookup: Adding tower for '%s'\n",
eps->e[i].name));
r->out.entries[num_ents].annotation = talloc_strdup(r->out.entries,
eps->e[i].name);
r->out.entries[num_ents].tower = talloc(r->out.entries,
struct epm_twr_t);
if (r->out.entries[num_ents].tower == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
r->out.entries[num_ents].tower->tower.floors = talloc_move(r->out.entries[num_ents].tower, &eps->e[i].ep.floors);
r->out.entries[num_ents].tower->tower.num_floors = eps->e[i].ep.num_floors;
r->out.entries[num_ents].tower->tower_length = 0;
num_ents++;
}
} /* end for loop */
*r->out.num_ents = num_ents;
eps->count -= count;
eps->e += count;
if (eps->count == 0) {
close_policy_hnd(p, entry_handle);
ZERO_STRUCTP(r->out.entry_handle);
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
rc = EPMAPPER_STATUS_OK;
done:
talloc_free(tmp_ctx);
return rc;
}
/*
* epm_Map
*
* Apply some algorithm (using the fields in the map_tower) to an endpoint map
* to produce a list of protocol towers.
*/
error_status_t _epm_Map(struct pipes_struct *p,
struct epm_Map *r)
{
struct policy_handle *entry_handle;
enum dcerpc_transport_t transport;
struct ndr_syntax_id ifid;
struct epm_floor *floors;
struct rpc_eps *eps;
TALLOC_CTX *tmp_ctx;
error_status_t rc;
uint32_t count = 0;
uint32_t num_towers = 0;
uint32_t num_floors = 0;
uint32_t i;
bool ok;
*r->out.num_towers = 0;
r->out.towers = NULL;
if (r->in.map_tower == NULL || r->in.max_towers == 0 ||
r->in.map_tower->tower.num_floors < 3) {
return EPMAPPER_STATUS_NO_MORE_ENTRIES;
}
tmp_ctx = talloc_stackframe();
if (tmp_ctx == NULL) {
return EPMAPPER_STATUS_NO_MEMORY;
}
ZERO_STRUCTP(r->out.entry_handle);
DEBUG(5, ("_epm_Map: Trying to map max. %u towers.\n",
r->in.max_towers));
/*
* A tower has normally up to 6 floors
*
* +-----------------------------------------------------------------+
* | Floor 1 | Provides the RPC interface identifier. (e.g. UUID for |
* | | netlogon) |
* +---------+-------------------------------------------------------+
* | Floor 2 | Transfer syntax (NDR endcoded) |
* +---------+-------------------------------------------------------+
* | Floor 3 | RPC protocol identifier (ncacn_tcp_ip, ncacn_np, ...) |
* +---------+-------------------------------------------------------+
* | Floor 4 | Port address (e.g. TCP Port: 49156) |
* +---------+-------------------------------------------------------+
* | Floor 5 | Transport (e.g. IP:192.168.51.10) |
* +---------+-------------------------------------------------------+
* | Floor 6 | Routing |
* +---------+-------------------------------------------------------+
*/
num_floors = r->in.map_tower->tower.num_floors;
floors = r->in.map_tower->tower.floors;
/* We accept NDR as the transfer syntax */
dcerpc_floor_get_lhs_data(&floors[1], &ifid);
if (floors[1].lhs.protocol != EPM_PROTOCOL_UUID ||
!GUID_equal(&ifid.uuid, &ndr_transfer_syntax.uuid) ||
ifid.if_version != ndr_transfer_syntax.if_version) {
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
/* We only talk to sane transports */
transport = dcerpc_transport_by_tower(&r->in.map_tower->tower);
if (transport == NCA_UNKNOWN) {
DEBUG(2, ("epm_Map: Client requested unknown transport with"
"levels: "));
for (i = 2; i < r->in.map_tower->tower.num_floors; i++) {
DEBUG(2, ("%d, ", r->in.map_tower->tower.floors[i].lhs.protocol));
}
DEBUG(2, ("\n"));
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
if (r->in.entry_handle == NULL ||
policy_handle_empty(r->in.entry_handle)) {
struct GUID *obj;
DEBUG(7, ("_epm_Map: No entry_handle found, creating it.\n"));
eps = talloc_zero(tmp_ctx, struct rpc_eps);
if (eps == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
/*
* *** ATTENTION ***
* CDE 1.1 states:
*
* ept_map()
* Apply some algorithm (using the fields in the map_tower)
* to an endpoint map to produce a list of protocol towers.
*
* The following code is the mysterious "some algorithm"!
*/
/* Filter by object id if one was given. */
if (r->in.object == NULL || GUID_all_zero(r->in.object)) {
obj = NULL;
} else {
obj = r->in.object;
}
eps->count = build_ep_list(eps,
endpoint_table,
obj,
p->server_id == NULL ? NULL : p->server_id->addr,
&eps->e);
if (eps->count == 0) {
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
/* Filter out endpoints which match the interface. */
{
struct rpc_eps *teps;
uint32_t total = 0;
teps = talloc_zero(tmp_ctx, struct rpc_eps);
if (teps == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
for (i = 0; i < eps->count; i++) {
if (data_blob_cmp(&r->in.map_tower->tower.floors[0].lhs.lhs_data,
&eps->e[i].ep.floors[0].lhs.lhs_data) != 0 ||
transport != dcerpc_transport_by_tower(&eps->e[i].ep)) {
continue;
}
teps->e = talloc_realloc(tmp_ctx,
teps->e,
struct dcesrv_ep_iface,
total + 1);
if (teps->e == NULL) {
return 0;
}
teps->e[total].ep.floors = talloc_move(teps, &eps->e[i].ep.floors);
teps->e[total].ep.num_floors = eps->e[i].ep.num_floors;
teps->e[total].name = talloc_move(teps, &eps->e[i].name);
teps->e[total].syntax_id = eps->e[i].syntax_id;
total++;
}
teps->count = total;
talloc_free(eps);
eps = teps;
}
/* end of "some algorithm" */
ok = create_policy_hnd(p, r->out.entry_handle, eps);
if (!ok) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
ok = find_policy_by_hnd(p, r->out.entry_handle, (void **)(void*) &eps);
if (!ok) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
entry_handle = r->out.entry_handle;
} else {
DEBUG(7, ("_epm_Map: Trying to find entry_handle.\n"));
ok = find_policy_by_hnd(p, r->in.entry_handle, (void **)(void*) &eps);
if (!ok) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
entry_handle = r->in.entry_handle;
}
if (eps == NULL || eps->e == NULL) {
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
/* return the next N elements */
count = r->in.max_towers;
if (count > eps->count) {
count = eps->count;
}
if (count == 0) {
close_policy_hnd(p, entry_handle);
ZERO_STRUCTP(r->out.entry_handle);
rc = EPMAPPER_STATUS_NO_MORE_ENTRIES;
goto done;
}
r->out.towers = talloc_array(p->mem_ctx, struct epm_twr_p_t, count);
if (r->out.towers == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
for (i = 0; i < count; i++) {
DEBUG(7, ("_epm_Map: Map tower for '%s'\n",
eps->e[i].name));
r->out.towers[num_towers].twr = talloc(r->out.towers,
struct epm_twr_t);
if (r->out.towers[num_towers].twr == NULL) {
rc = EPMAPPER_STATUS_NO_MEMORY;
goto done;
}
r->out.towers[num_towers].twr->tower.floors = talloc_move(r->out.towers[num_towers].twr, &eps->e[i].ep.floors);
r->out.towers[num_towers].twr->tower.num_floors = eps->e[i].ep.num_floors;
r->out.towers[num_towers].twr->tower_length = 0;
num_towers++;
}
*r->out.num_towers = num_towers;
eps->count -= count;
eps->e += count;
if (eps->count == 0) {
close_policy_hnd(p, entry_handle);
ZERO_STRUCTP(r->out.entry_handle);
}
rc = EPMAPPER_STATUS_OK;
done:
talloc_free(tmp_ctx);
return rc;
}
/*
* epm_LookupHandleFree
*/
error_status_t _epm_LookupHandleFree(struct pipes_struct *p,
struct epm_LookupHandleFree *r)
{
if (r->in.entry_handle == NULL) {
return EPMAPPER_STATUS_OK;
}
if (is_valid_policy_hnd(r->in.entry_handle)) {
close_policy_hnd(p, r->in.entry_handle);
}
r->out.entry_handle = r->in.entry_handle;
return EPMAPPER_STATUS_OK;
}
/*
* epm_InqObject
*
* A client implementation SHOULD NOT call this method. These extensions do not
* provide an alternative method.
*/
error_status_t _epm_InqObject(struct pipes_struct *p,
struct epm_InqObject *r)
{
p->rng_fault_state = true;
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
/*
* epm_MgmtDelete
*
* A client implementation SHOULD NOT call this method. These extensions do not
* provide an alternative method.
*/
error_status_t _epm_MgmtDelete(struct pipes_struct *p,
struct epm_MgmtDelete *r)
{
p->rng_fault_state = true;
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
/*
epm_MapAuth
*/
error_status_t _epm_MapAuth(struct pipes_struct *p,
struct epm_MapAuth *r)
{
p->rng_fault_state = true;
return EPMAPPER_STATUS_CANT_PERFORM_OP;
}
/* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */
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