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-rw-r--r--source4/rpc_server/samr/dcesrv_samr.c187
-rw-r--r--source4/rpc_server/samr/dcesrv_samr.h5
-rw-r--r--source4/rpc_server/samr/samdb.c23
-rw-r--r--source4/rpc_server/samr/samr_password.c16
4 files changed, 74 insertions, 157 deletions
diff --git a/source4/rpc_server/samr/dcesrv_samr.c b/source4/rpc_server/samr/dcesrv_samr.c
index d670a2f8dc..60147a94fb 100644
--- a/source4/rpc_server/samr/dcesrv_samr.c
+++ b/source4/rpc_server/samr/dcesrv_samr.c
@@ -27,24 +27,11 @@
/*
- destroy connection state
+ destroy a general handle. This relies on the talloc destructor being set up correctly
*/
-static void samr_Connect_close(struct samr_connect_state *c_state)
+static void samr_handle_destroy(struct dcesrv_connection *conn, struct dcesrv_handle *h)
{
- c_state->reference_count--;
- if (c_state->reference_count == 0) {
- samdb_close(c_state->sam_ctx);
- talloc_destroy(c_state->mem_ctx);
- }
-}
-
-/*
- destroy an open connection. This closes the database connection
-*/
-static void samr_Connect_destroy(struct dcesrv_connection *conn, struct dcesrv_handle *h)
-{
- struct samr_connect_state *c_state = h->data;
- samr_Connect_close(c_state);
+ talloc_free(h->data);
}
/*
@@ -57,38 +44,30 @@ static NTSTATUS samr_Connect(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem
{
struct samr_connect_state *c_state;
struct dcesrv_handle *handle;
- TALLOC_CTX *connect_mem_ctx;
ZERO_STRUCTP(r->out.handle);
- connect_mem_ctx = talloc_init("samr_Connect");
- if (!connect_mem_ctx) {
- return NT_STATUS_NO_MEMORY;
- }
-
- c_state = talloc_p(connect_mem_ctx, struct samr_connect_state);
+ c_state = talloc_p(NULL, struct samr_connect_state);
if (!c_state) {
return NT_STATUS_NO_MEMORY;
}
- c_state->mem_ctx = connect_mem_ctx;
/* make sure the sam database is accessible */
- c_state->sam_ctx = samdb_connect();
+ c_state->sam_ctx = samdb_connect(mem_ctx);
if (c_state->sam_ctx == NULL) {
- talloc_destroy(c_state->mem_ctx);
+ talloc_destroy(c_state);
return NT_STATUS_INVALID_SYSTEM_SERVICE;
}
handle = dcesrv_handle_new(dce_call->conn, SAMR_HANDLE_CONNECT);
if (!handle) {
- talloc_destroy(c_state->mem_ctx);
+ talloc_free(c_state);
return NT_STATUS_NO_MEMORY;
}
handle->data = c_state;
- handle->destroy = samr_Connect_destroy;
+ handle->destroy = samr_handle_destroy;
- c_state->reference_count = 1;
c_state->access_mask = r->in.access_mask;
*r->out.handle = handle->wire_handle;
@@ -280,23 +259,13 @@ static NTSTATUS samr_EnumDomains(struct dcesrv_call_state *dce_call, TALLOC_CTX
/*
close an open domain context
*/
-static void samr_Domain_close(struct dcesrv_connection *conn,
- struct samr_domain_state *d_state)
-{
- d_state->reference_count--;
- if (d_state->reference_count == 0) {
- samr_Connect_close(d_state->connect_state);
- talloc_destroy(d_state->mem_ctx);
- }
-}
-
-/*
- destroy an open domain context
-*/
-static void samr_Domain_destroy(struct dcesrv_connection *conn, struct dcesrv_handle *h)
+static int samr_Domain_destructor(void *ptr)
{
- struct samr_domain_state *d_state = h->data;
- samr_Domain_close(conn, d_state);
+ struct samr_domain_state *d_state = ptr;
+ /* we need to explicitly free the connect state to lower the
+ reference count */
+ talloc_free(d_state->connect_state);
+ return 0;
}
/*
@@ -309,7 +278,6 @@ static NTSTATUS samr_OpenDomain(struct dcesrv_call_state *dce_call, TALLOC_CTX *
const char *sidstr, *domain_name;
struct samr_connect_state *c_state;
struct samr_domain_state *d_state;
- TALLOC_CTX *mem_ctx2;
const char * const attrs[2] = { "name", NULL};
struct ldb_message **msgs;
int ret;
@@ -342,39 +310,32 @@ static NTSTATUS samr_OpenDomain(struct dcesrv_call_state *dce_call, TALLOC_CTX *
return NT_STATUS_NO_SUCH_DOMAIN;
}
- mem_ctx2 = talloc_init("OpenDomain(%s)\n", domain_name);
- if (!mem_ctx2) {
- return NT_STATUS_NO_MEMORY;
- }
-
- d_state = talloc_p(mem_ctx2, struct samr_domain_state);
+ d_state = talloc_p(c_state, struct samr_domain_state);
if (!d_state) {
- talloc_destroy(mem_ctx2);
return NT_STATUS_NO_MEMORY;
}
- d_state->reference_count = 1;
d_state->connect_state = c_state;
d_state->sam_ctx = c_state->sam_ctx;
- d_state->mem_ctx = mem_ctx2;
- d_state->domain_sid = talloc_strdup(mem_ctx2, sidstr);
- d_state->domain_name = talloc_strdup(mem_ctx2, domain_name);
- d_state->domain_dn = talloc_strdup(mem_ctx2, msgs[0]->dn);
+ d_state->domain_sid = talloc_strdup(d_state, sidstr);
+ d_state->domain_name = talloc_strdup(d_state, domain_name);
+ d_state->domain_dn = talloc_strdup(d_state, msgs[0]->dn);
if (!d_state->domain_sid || !d_state->domain_name || !d_state->domain_dn) {
- talloc_destroy(mem_ctx2);
+ talloc_free(d_state);
return NT_STATUS_NO_MEMORY;
}
d_state->access_mask = r->in.access_mask;
h_domain = dcesrv_handle_new(dce_call->conn, SAMR_HANDLE_DOMAIN);
if (!h_domain) {
- talloc_destroy(mem_ctx2);
+ talloc_free(d_state);
return NT_STATUS_NO_MEMORY;
}
+ talloc_set_destructor(d_state, samr_Domain_destructor);
+ talloc_increase_ref_count(c_state);
- c_state->reference_count++;
h_domain->data = d_state;
- h_domain->destroy = samr_Domain_destroy;
+ h_domain->destroy = samr_handle_destroy;
*r->out.domain_handle = h_domain->wire_handle;
return NT_STATUS_OK;
@@ -457,13 +418,15 @@ static NTSTATUS samr_SetDomainInfo(struct dcesrv_call_state *dce_call, TALLOC_CT
}
/*
- destroy an open account context
+ close an open domain context
*/
-static void samr_Account_destroy(struct dcesrv_connection *conn, struct dcesrv_handle *h)
+static int samr_Account_destructor(void *ptr)
{
- struct samr_account_state *a_state = h->data;
- samr_Domain_close(conn, a_state->domain_state);
- talloc_destroy(a_state->mem_ctx);
+ struct samr_account_state *a_state = ptr;
+ /* we need to explicitly free the domain state to lower the
+ reference count */
+ talloc_free(a_state->domain_state);
+ return 0;
}
/*
@@ -480,7 +443,6 @@ static NTSTATUS samr_CreateDomainGroup(struct dcesrv_call_state *dce_call, TALLO
uint32_t rid;
const char *groupname, *sidstr;
time_t now = time(NULL);
- TALLOC_CTX *mem_ctx2;
struct dcesrv_handle *g_handle;
int ret;
NTSTATUS status;
@@ -558,23 +520,16 @@ static NTSTATUS samr_CreateDomainGroup(struct dcesrv_call_state *dce_call, TALLO
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
- /* create group state and new policy handle */
- mem_ctx2 = talloc_init("CreateDomainGroup(%s)", groupname);
- if (!mem_ctx2) {
- return NT_STATUS_NO_MEMORY;
- }
-
- a_state = talloc_p(mem_ctx2, struct samr_account_state);
+ a_state = talloc_p(d_state, struct samr_account_state);
if (!a_state) {
return NT_STATUS_NO_MEMORY;
}
- a_state->mem_ctx = mem_ctx2;
a_state->sam_ctx = d_state->sam_ctx;
a_state->access_mask = r->in.access_mask;
a_state->domain_state = d_state;
- a_state->account_dn = talloc_steal(mem_ctx2, msg.dn);
- a_state->account_sid = talloc_strdup(mem_ctx2, sidstr);
- a_state->account_name = talloc_strdup(mem_ctx2, groupname);
+ a_state->account_dn = talloc_steal(d_state, msg.dn);
+ a_state->account_sid = talloc_strdup(d_state, sidstr);
+ a_state->account_name = talloc_strdup(d_state, groupname);
if (!a_state->account_name || !a_state->account_sid) {
return NT_STATUS_NO_MEMORY;
}
@@ -586,10 +541,11 @@ static NTSTATUS samr_CreateDomainGroup(struct dcesrv_call_state *dce_call, TALLO
}
g_handle->data = a_state;
- g_handle->destroy = samr_Account_destroy;
+ g_handle->destroy = samr_handle_destroy;
/* the domain state is in use one more time */
- d_state->reference_count++;
+ talloc_increase_ref_count(d_state);
+ talloc_set_destructor(a_state, samr_Account_destructor);
*r->out.group_handle = g_handle->wire_handle;
*r->out.rid = rid;
@@ -624,7 +580,6 @@ static NTSTATUS samr_CreateUser2(struct dcesrv_call_state *dce_call, TALLOC_CTX
uint32_t rid;
const char *account_name, *sidstr;
time_t now = time(NULL);
- TALLOC_CTX *mem_ctx2;
struct dcesrv_handle *u_handle;
int ret;
NTSTATUS status;
@@ -742,23 +697,16 @@ static NTSTATUS samr_CreateUser2(struct dcesrv_call_state *dce_call, TALLOC_CTX
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
- /* create user state and new policy handle */
- mem_ctx2 = talloc_init("CreateUser(%s)", account_name);
- if (!mem_ctx2) {
- return NT_STATUS_NO_MEMORY;
- }
-
- a_state = talloc_p(mem_ctx2, struct samr_account_state);
+ a_state = talloc_p(d_state, struct samr_account_state);
if (!a_state) {
return NT_STATUS_NO_MEMORY;
}
- a_state->mem_ctx = mem_ctx2;
a_state->sam_ctx = d_state->sam_ctx;
a_state->access_mask = r->in.access_mask;
a_state->domain_state = d_state;
- a_state->account_dn = talloc_steal(mem_ctx2, msg.dn);
- a_state->account_sid = talloc_strdup(mem_ctx2, sidstr);
- a_state->account_name = talloc_strdup(mem_ctx2, account_name);
+ a_state->account_dn = talloc_steal(d_state, msg.dn);
+ a_state->account_sid = talloc_strdup(d_state, sidstr);
+ a_state->account_name = talloc_strdup(d_state, account_name);
if (!a_state->account_name || !a_state->account_sid) {
return NT_STATUS_NO_MEMORY;
}
@@ -770,10 +718,11 @@ static NTSTATUS samr_CreateUser2(struct dcesrv_call_state *dce_call, TALLOC_CTX
}
u_handle->data = a_state;
- u_handle->destroy = samr_Account_destroy;
+ u_handle->destroy = samr_handle_destroy;
/* the domain state is in use one more time */
- d_state->reference_count++;
+ talloc_increase_ref_count(d_state);
+ talloc_set_destructor(a_state, samr_Account_destructor);
*r->out.acct_handle = u_handle->wire_handle;
*r->out.access_granted = 0xf07ff; /* TODO: fix access mask calculations */
@@ -1023,7 +972,6 @@ static NTSTATUS samr_OpenGroup(struct dcesrv_call_state *dce_call, TALLOC_CTX *m
struct samr_account_state *a_state;
struct dcesrv_handle *h;
const char *groupname, *sidstr;
- TALLOC_CTX *mem_ctx2;
struct ldb_message **msgs;
struct dcesrv_handle *g_handle;
const char * const attrs[2] = { "sAMAccountName", NULL };
@@ -1060,23 +1008,16 @@ static NTSTATUS samr_OpenGroup(struct dcesrv_call_state *dce_call, TALLOC_CTX *m
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
- /* create group state and new policy handle */
- mem_ctx2 = talloc_init("OpenGroup(%u)", r->in.rid);
- if (!mem_ctx2) {
- return NT_STATUS_NO_MEMORY;
- }
-
- a_state = talloc_p(mem_ctx2, struct samr_account_state);
+ a_state = talloc_p(d_state, struct samr_account_state);
if (!a_state) {
return NT_STATUS_NO_MEMORY;
}
- a_state->mem_ctx = mem_ctx2;
a_state->sam_ctx = d_state->sam_ctx;
a_state->access_mask = r->in.access_mask;
a_state->domain_state = d_state;
- a_state->account_dn = talloc_steal(mem_ctx2, msgs[0]->dn);
- a_state->account_sid = talloc_strdup(mem_ctx2, sidstr);
- a_state->account_name = talloc_strdup(mem_ctx2, groupname);
+ a_state->account_dn = talloc_steal(a_state, msgs[0]->dn);
+ a_state->account_sid = talloc_strdup(a_state, sidstr);
+ a_state->account_name = talloc_strdup(a_state, groupname);
if (!a_state->account_name || !a_state->account_sid) {
return NT_STATUS_NO_MEMORY;
}
@@ -1088,10 +1029,11 @@ static NTSTATUS samr_OpenGroup(struct dcesrv_call_state *dce_call, TALLOC_CTX *m
}
g_handle->data = a_state;
- g_handle->destroy = samr_Account_destroy;
+ g_handle->destroy = samr_handle_destroy;
/* the domain state is in use one more time */
- d_state->reference_count++;
+ talloc_increase_ref_count(d_state);
+ talloc_set_destructor(a_state, samr_Account_destructor);
*r->out.acct_handle = g_handle->wire_handle;
@@ -1402,7 +1344,6 @@ static NTSTATUS samr_OpenUser(struct dcesrv_call_state *dce_call, TALLOC_CTX *me
struct samr_account_state *a_state;
struct dcesrv_handle *h;
const char *account_name, *sidstr;
- TALLOC_CTX *mem_ctx2;
struct ldb_message **msgs;
struct dcesrv_handle *u_handle;
const char * const attrs[2] = { "sAMAccountName", NULL };
@@ -1439,23 +1380,16 @@ static NTSTATUS samr_OpenUser(struct dcesrv_call_state *dce_call, TALLOC_CTX *me
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
- /* create user state and new policy handle */
- mem_ctx2 = talloc_init("OpenUser(%u)", r->in.rid);
- if (!mem_ctx2) {
- return NT_STATUS_NO_MEMORY;
- }
-
- a_state = talloc_p(mem_ctx2, struct samr_account_state);
+ a_state = talloc_p(d_state, struct samr_account_state);
if (!a_state) {
return NT_STATUS_NO_MEMORY;
}
- a_state->mem_ctx = mem_ctx2;
a_state->sam_ctx = d_state->sam_ctx;
a_state->access_mask = r->in.access_mask;
a_state->domain_state = d_state;
- a_state->account_dn = talloc_steal(mem_ctx2, msgs[0]->dn);
- a_state->account_sid = talloc_strdup(mem_ctx2, sidstr);
- a_state->account_name = talloc_strdup(mem_ctx2, account_name);
+ a_state->account_dn = talloc_steal(d_state, msgs[0]->dn);
+ a_state->account_sid = talloc_strdup(d_state, sidstr);
+ a_state->account_name = talloc_strdup(d_state, account_name);
if (!a_state->account_name || !a_state->account_sid) {
return NT_STATUS_NO_MEMORY;
}
@@ -1467,10 +1401,11 @@ static NTSTATUS samr_OpenUser(struct dcesrv_call_state *dce_call, TALLOC_CTX *me
}
u_handle->data = a_state;
- u_handle->destroy = samr_Account_destroy;
+ u_handle->destroy = samr_handle_destroy;
/* the domain state is in use one more time */
- d_state->reference_count++;
+ talloc_increase_ref_count(d_state);
+ talloc_set_destructor(a_state, samr_Account_destructor);
*r->out.acct_handle = u_handle->wire_handle;
@@ -2076,7 +2011,7 @@ static NTSTATUS samr_GetDomPwInfo(struct dcesrv_call_state *dce_call, TALLOC_CTX
ZERO_STRUCT(r->out.info);
- sam_ctx = samdb_connect();
+ sam_ctx = samdb_connect(mem_ctx);
if (sam_ctx == NULL) {
return NT_STATUS_INVALID_SYSTEM_SERVICE;
}
@@ -2086,12 +2021,10 @@ static NTSTATUS samr_GetDomPwInfo(struct dcesrv_call_state *dce_call, TALLOC_CTX
"(&(name=%s)(objectclass=domain))",
lp_workgroup());
if (ret <= 0) {
- samdb_close(sam_ctx);
return NT_STATUS_NO_SUCH_DOMAIN;
}
if (ret > 1) {
samdb_search_free(sam_ctx, mem_ctx, msgs);
- samdb_close(sam_ctx);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
@@ -2100,7 +2033,7 @@ static NTSTATUS samr_GetDomPwInfo(struct dcesrv_call_state *dce_call, TALLOC_CTX
samdb_search_free(sam_ctx, mem_ctx, msgs);
- samdb_close(sam_ctx);
+ talloc_free(sam_ctx);
return NT_STATUS_OK;
}
diff --git a/source4/rpc_server/samr/dcesrv_samr.h b/source4/rpc_server/samr/dcesrv_samr.h
index 205e107207..9e41937328 100644
--- a/source4/rpc_server/samr/dcesrv_samr.h
+++ b/source4/rpc_server/samr/dcesrv_samr.h
@@ -36,9 +36,7 @@ enum samr_handle {
state asscoiated with a samr_Connect*() operation
*/
struct samr_connect_state {
- int reference_count;
void *sam_ctx;
- TALLOC_CTX *mem_ctx;
uint32_t access_mask;
};
@@ -47,9 +45,7 @@ struct samr_connect_state {
*/
struct samr_domain_state {
struct samr_connect_state *connect_state;
- int reference_count;
void *sam_ctx;
- TALLOC_CTX *mem_ctx;
uint32_t access_mask;
const char *domain_sid;
const char *domain_name;
@@ -62,7 +58,6 @@ struct samr_domain_state {
struct samr_account_state {
struct samr_domain_state *domain_state;
void *sam_ctx;
- TALLOC_CTX *mem_ctx;
uint32_t access_mask;
const char *account_sid;
const char *account_name;
diff --git a/source4/rpc_server/samr/samdb.c b/source4/rpc_server/samr/samdb.c
index c02692703c..7be75258af 100644
--- a/source4/rpc_server/samr/samdb.c
+++ b/source4/rpc_server/samr/samdb.c
@@ -42,11 +42,20 @@ void samdb_debug(void *context, enum ldb_debug_level level, const char *fmt, va_
free(s);
}
+/* close a connection to the sam */
+int samdb_destructor(void *ctx)
+{
+ struct samdb_context *sam_ctx = ctx;
+ /* we don't actually close due to broken posix locking semantics */
+ sam_ctx->ldb = NULL;
+ return 0;
+}
+
/*
connect to the SAM database
return an opaque context pointer on success, or NULL on failure
*/
-void *samdb_connect(void)
+void *samdb_connect(TALLOC_CTX *mem_ctx)
{
struct samdb_context *ctx;
/*
@@ -68,26 +77,18 @@ void *samdb_connect(void)
ldb_set_debug(static_sam_db, samdb_debug, NULL);
- ctx = malloc_p(struct samdb_context);
+ ctx = talloc_p(NULL, struct samdb_context);
if (!ctx) {
errno = ENOMEM;
return NULL;
}
ctx->ldb = static_sam_db;
+ talloc_set_destructor(ctx, samdb_destructor);
return ctx;
}
-/* close a connection to the sam */
-void samdb_close(void *ctx)
-{
- struct samdb_context *sam_ctx = ctx;
- /* we don't actually close due to broken posix locking semantics */
- sam_ctx->ldb = NULL;
- free(sam_ctx);
-}
-
/*
search the sam for the specified attributes - varargs variant
*/
diff --git a/source4/rpc_server/samr/samr_password.c b/source4/rpc_server/samr/samr_password.c
index f1947022a2..852f564aef 100644
--- a/source4/rpc_server/samr/samr_password.c
+++ b/source4/rpc_server/samr/samr_password.c
@@ -145,7 +145,7 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
/* this call doesn't take a policy handle, so we need to open
the sam db from scratch */
- sam_ctx = samdb_connect();
+ sam_ctx = samdb_connect(mem_ctx);
if (sam_ctx == NULL) {
return NT_STATUS_INVALID_SYSTEM_SERVICE;
}
@@ -158,7 +158,6 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
"(&(sAMAccountName=%s)(objectclass=user))",
r->in.account->name);
if (ret != 1) {
- samdb_close(sam_ctx);
return NT_STATUS_NO_SUCH_USER;
}
@@ -177,21 +176,18 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
if (!decode_pw_buffer(pwbuf->data, new_pass, sizeof(new_pass),
&new_pass_len, STR_ASCII)) {
DEBUG(3,("samr: failed to decode password buffer\n"));
- samdb_close(sam_ctx);
return NT_STATUS_WRONG_PASSWORD;
}
/* work out the domain dn */
domain_sid = samdb_result_sid_prefix(mem_ctx, res[0], "objectSid");
if (domain_sid == NULL) {
- samdb_close(sam_ctx);
return NT_STATUS_NO_SUCH_USER;
}
domain_dn = samdb_search_string(sam_ctx, mem_ctx, NULL, "dn",
"(objectSid=%s)", domain_sid);
if (!domain_dn) {
- samdb_close(sam_ctx);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
@@ -199,7 +195,6 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
ZERO_STRUCT(mod);
mod.dn = talloc_strdup(mem_ctx, user_dn);
if (!mod.dn) {
- samdb_close(sam_ctx);
return NT_STATUS_NO_MEMORY;
}
@@ -211,18 +206,15 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
NULL, NULL,
True, NULL);
if (!NT_STATUS_IS_OK(status)) {
- samdb_close(sam_ctx);
return status;
}
/* modify the samdb record */
ret = samdb_replace(sam_ctx, mem_ctx, &mod);
if (ret != 0) {
- samdb_close(sam_ctx);
return NT_STATUS_UNSUCCESSFUL;
}
- samdb_close(sam_ctx);
return NT_STATUS_OK;
}
@@ -262,7 +254,7 @@ NTSTATUS samr_ChangePasswordUser3(struct dcesrv_call_state *dce_call,
/* this call doesn't take a policy handle, so we need to open
the sam db from scratch */
- sam_ctx = samdb_connect();
+ sam_ctx = samdb_connect(mem_ctx);
if (sam_ctx == NULL) {
status = NT_STATUS_INVALID_SYSTEM_SERVICE;
goto failed;
@@ -344,16 +336,12 @@ NTSTATUS samr_ChangePasswordUser3(struct dcesrv_call_state *dce_call,
goto failed;
}
- samdb_close(sam_ctx);
return NT_STATUS_OK;
failed:
ret = samdb_search(sam_ctx,
mem_ctx, NULL, &res, dom_attrs,
"dn=%s", domain_dn);
- if (sam_ctx) {
- samdb_close(sam_ctx);
- }
if (ret != 1) {
return status;
generated by cgit (git 2.34.1) at 2024-11-11 10:22:54 +0000