#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
+/*
+ * Handle database - stored per pipe.
+ */
+
+struct policy {
+ struct policy *next, *prev;
+
+ struct policy_handle pol_hnd;
+
+ uint32_t access_granted;
+
+ void *data_ptr;
+};
+
+struct handle_list {
+ struct policy *Policy; /* List of policies. */
+ size_t count; /* Current number of handles. */
+ size_t pipe_ref_count; /* Number of pipe handles referring to this list. */
+};
+
/* This is the max handles across all instances of a pipe name. */
#ifndef MAX_OPEN_POLS
-#define MAX_OPEN_POLS 1024
+#define MAX_OPEN_POLS 2048
#endif
/****************************************************************************
pipe is open. JRA.
****************************************************************************/
-static bool is_samr_lsa_pipe(const char *pipe_name)
+static bool is_samr_lsa_pipe(const struct ndr_syntax_id *syntax)
{
- return (strstr(pipe_name, "samr") || strstr(pipe_name, "lsa"));
+ return (ndr_syntax_id_equal(syntax, &ndr_table_samr.syntax_id)
+ || ndr_syntax_id_equal(syntax, &ndr_table_lsarpc.syntax_id));
+}
+
+size_t num_pipe_handles(struct handle_list *list)
+{
+ if (list == NULL) {
+ return 0;
+ }
+ return list->count;
}
/****************************************************************************
pipes of the same name.
****************************************************************************/
-bool init_pipe_handle_list(pipes_struct *p, const char *pipe_name)
+bool init_pipe_handle_list(pipes_struct *p, const struct ndr_syntax_id *syntax)
{
- pipes_struct *plist = get_first_internal_pipe();
- struct handle_list *hl = NULL;
-
- for (plist = get_first_internal_pipe(); plist; plist = get_next_internal_pipe(plist)) {
- if (strequal( plist->name, pipe_name) ||
- (is_samr_lsa_pipe(plist->name) && is_samr_lsa_pipe(pipe_name))) {
- if (!plist->pipe_handles) {
- char *msg;
- if (asprintf(&msg, "init_pipe_handles: NULL "
- "pipe_handle pointer in pipe %s",
- pipe_name) != -1) {
- smb_panic(msg);
- } else {
- smb_panic("init_pipe_handle_list");
- }
- }
- hl = plist->pipe_handles;
+ pipes_struct *plist;
+ struct handle_list *hl;
+
+ for (plist = get_first_internal_pipe();
+ plist;
+ plist = get_next_internal_pipe(plist)) {
+ if (ndr_syntax_id_equal(syntax, &plist->syntax)) {
+ break;
+ }
+ if (is_samr_lsa_pipe(&plist->syntax)
+ && is_samr_lsa_pipe(syntax)) {
+ /*
+ * samr and lsa share a handle space (same process
+ * under Windows?)
+ */
break;
}
}
- if (!hl) {
+ if (plist != NULL) {
+ hl = plist->pipe_handles;
+ if (hl == NULL) {
+ return false;
+ }
+ } else {
/*
- * No handle list for this pipe (first open of pipe).
- * Create list.
+ * First open, we have to create the handle list
*/
-
- if ((hl = SMB_MALLOC_P(struct handle_list)) == NULL)
- return False;
+ hl = SMB_MALLOC_P(struct handle_list);
+ if (hl == NULL) {
+ return false;
+ }
ZERO_STRUCTP(hl);
- DEBUG(10,("init_pipe_handles: created handle list for pipe %s\n", pipe_name ));
+ DEBUG(10,("init_pipe_handle_list: created handle list for "
+ "pipe %s\n",
+ get_pipe_name_from_syntax(talloc_tos(), syntax)));
}
/*
p->pipe_handles = hl;
- DEBUG(10,("init_pipe_handles: pipe_handles ref count = %lu for pipe %s\n",
- (unsigned long)p->pipe_handles->pipe_ref_count, pipe_name ));
+ DEBUG(10,("init_pipe_handle_list: pipe_handles ref count = %lu for "
+ "pipe %s\n", (unsigned long)p->pipe_handles->pipe_ref_count,
+ get_pipe_name_from_syntax(talloc_tos(), syntax)));
return True;
}
/****************************************************************************
find first available policy slot. creates a policy handle for you.
+
+ If "data_ptr" is given, this must be a talloc'ed object, create_policy_hnd
+ talloc_moves this into the handle. If the policy_hnd is closed,
+ data_ptr is TALLOC_FREE()'ed
****************************************************************************/
-bool create_policy_hnd(pipes_struct *p, POLICY_HND *hnd, void (*free_fn)(void *), void *data_ptr)
+static struct policy *create_policy_hnd_internal(pipes_struct *p,
+ struct policy_handle *hnd,
+ void *data_ptr)
{
static uint32 pol_hnd_low = 0;
static uint32 pol_hnd_high = 0;
if (p->pipe_handles->count > MAX_OPEN_POLS) {
DEBUG(0,("create_policy_hnd: ERROR: too many handles (%d) on this pipe.\n",
(int)p->pipe_handles->count));
- return False;
+ return NULL;
}
- pol = SMB_MALLOC_P(struct policy);
+ pol = TALLOC_ZERO_P(NULL, struct policy);
if (!pol) {
DEBUG(0,("create_policy_hnd: ERROR: out of memory!\n"));
- return False;
+ return NULL;
}
- ZERO_STRUCTP(pol);
-
- pol->data_ptr = data_ptr;
- pol->free_fn = free_fn;
+ if (data_ptr != NULL) {
+ pol->data_ptr = talloc_move(pol, &data_ptr);
+ }
pol_hnd_low++;
if (pol_hnd_low == 0)
DEBUG(4,("Opened policy hnd[%d] ", (int)p->pipe_handles->count));
dump_data(4, (uint8 *)hnd, sizeof(*hnd));
- return True;
+ return pol;
+}
+
+bool create_policy_hnd(pipes_struct *p, struct policy_handle *hnd,
+ void *data_ptr)
+{
+ return create_policy_hnd_internal(p, hnd, data_ptr) != NULL;
}
/****************************************************************************
find policy by handle - internal version.
****************************************************************************/
-static struct policy *find_policy_by_hnd_internal(pipes_struct *p, POLICY_HND *hnd, void **data_p)
+static struct policy *find_policy_by_hnd_internal(pipes_struct *p,
+ const struct policy_handle *hnd,
+ void **data_p)
{
struct policy *pol;
size_t i;
find policy by handle
****************************************************************************/
-bool find_policy_by_hnd(pipes_struct *p, POLICY_HND *hnd, void **data_p)
+bool find_policy_by_hnd(pipes_struct *p, const struct policy_handle *hnd,
+ void **data_p)
{
return find_policy_by_hnd_internal(p, hnd, data_p) == NULL ? False : True;
}
Close a policy.
****************************************************************************/
-bool close_policy_hnd(pipes_struct *p, POLICY_HND *hnd)
+bool close_policy_hnd(pipes_struct *p, struct policy_handle *hnd)
{
struct policy *pol = find_policy_by_hnd_internal(p, hnd, NULL);
DEBUG(3,("Closed policy\n"));
- if (pol->free_fn && pol->data_ptr)
- (*pol->free_fn)(pol->data_ptr);
-
p->pipe_handles->count--;
DLIST_REMOVE(p->pipe_handles->Policy, pol);
- ZERO_STRUCTP(pol);
-
- SAFE_FREE(pol);
+ TALLOC_FREE(pol);
return True;
}
p->pipe_handles->count = 0;
SAFE_FREE(p->pipe_handles);
- DEBUG(10,("close_policy_by_pipe: deleted handle list for pipe %s\n", p->name ));
+ DEBUG(10,("close_policy_by_pipe: deleted handle list for "
+ "pipe %s\n",
+ get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
}
}
return True;
}
+
+void *_policy_handle_create(struct pipes_struct *p, struct policy_handle *hnd,
+ uint32_t access_granted, size_t data_size,
+ const char *type, NTSTATUS *pstatus)
+{
+ struct policy *pol;
+ void *data;
+
+ if (p->pipe_handles->count > MAX_OPEN_POLS) {
+ DEBUG(0, ("policy_handle_create: ERROR: too many handles (%d) "
+ "on pipe %s.\n", (int)p->pipe_handles->count,
+ get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
+ return NULL;
+ }
+
+ data = talloc_size(talloc_tos(), data_size);
+ if (data == NULL) {
+ *pstatus = NT_STATUS_NO_MEMORY;
+ return NULL;
+ }
+ talloc_set_name_const(data, type);
+
+ pol = create_policy_hnd_internal(p, hnd, data);
+ if (pol == NULL) {
+ TALLOC_FREE(data);
+ *pstatus = NT_STATUS_NO_MEMORY;
+ return NULL;
+ }
+ pol->access_granted = access_granted;
+ *pstatus = NT_STATUS_OK;
+ return data;
+}
+
+void *_policy_handle_find(struct pipes_struct *p,
+ const struct policy_handle *hnd,
+ uint32_t access_required,
+ uint32_t *paccess_granted,
+ const char *name, const char *location,
+ NTSTATUS *pstatus)
+{
+ struct policy *pol;
+ void *data;
+
+ pol = find_policy_by_hnd_internal(p, hnd, &data);
+ if (pol == NULL) {
+ *pstatus = NT_STATUS_INVALID_HANDLE;
+ return NULL;
+ }
+ if (strcmp(name, talloc_get_name(data)) != 0) {
+ DEBUG(10, ("expected %s, got %s\n", name,
+ talloc_get_name(data)));
+ *pstatus = NT_STATUS_INVALID_HANDLE;
+ return NULL;
+ }
+ if ((access_required & pol->access_granted) != access_required) {
+ if (geteuid() == sec_initial_uid()) {
+ DEBUG(4, ("%s: ACCESS should be DENIED (granted: "
+ "%#010x; required: %#010x)\n", location,
+ pol->access_granted, access_required));
+ DEBUGADD(4,("but overwritten by euid == 0\n"));
+ goto okay;
+ }
+ DEBUG(2,("%s: ACCESS DENIED (granted: %#010x; required: "
+ "%#010x)\n", location, pol->access_granted,
+ access_required));
+ *pstatus = NT_STATUS_ACCESS_DENIED;
+ return NULL;
+ }
+
+ okay:
+ DEBUG(10, ("found handle of type %s\n", talloc_get_name(data)));
+ if (paccess_granted != NULL) {
+ *paccess_granted = pol->access_granted;
+ }
+ *pstatus = NT_STATUS_OK;
+ return data;
+}
git.samba.org / ira / wip.git / blobdiff