r24577: Implement basic getpwent.

This one still cheats and only returns one winbindd_pw structure per call.
Also, doesn't get a new libnet_UserList yet.
(This used to be commit e1b93be1e130692a75a2fc4eb5ca8ee425fe1b82)

3 files changed, 173 insertions, 1 deletions

diff --git a/source4/winbind/config.mk b/source4/winbind/config.mk
index dd3f19aa635..da5b71f2ae8 100644
--- a/source4/winbind/config.mk
+++ b/source4/winbind/config.mk
@@ -32,6 +32,7 @@ OBJ_FILES = \
 		wb_cmd_list_trustdom.o \
 		wb_cmd_list_users.o \
 		wb_cmd_setpwent.o \
+		wb_cmd_getpwent.o \
 		wb_pam_auth.o \
 		wb_sam_logon.o
 PRIVATE_DEPENDENCIES = \
diff --git a/source4/winbind/wb_cmd_getpwent.c b/source4/winbind/wb_cmd_getpwent.c
new file mode 100644
index 00000000000..e4023dbad73
--- /dev/null
+++ b/source4/winbind/wb_cmd_getpwent.c
@@ -0,0 +1,129 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Command backend for getpwent
+
+   Copyright (C) Kai Blin 2007
+
+   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/composite/composite.h"
+#include "winbind/wb_server.h"
+#include "winbind/wb_async_helpers.h"
+#include "winbind/wb_helper.h"
+#include "smbd/service_task.h"
+#include "nsswitch/winbindd_nss.h"
+#include "libnet/libnet_proto.h"
+
+struct cmd_getpwent_state {
+	struct composite_context *ctx;
+	struct wbsrv_service *service;
+
+	struct wbsrv_pwent *pwent;
+	uint32_t max_users;
+
+	uint32_t num_users;
+	struct winbindd_pw *result;
+};
+
+static void cmd_getpwent_recv_pwnam(struct composite_context *ctx);
+#if 0 /*FIXME: implement this*/
+static void cmd_getpwent_recv_user_list(struct composite_context *ctx);
+#endif
+
+struct composite_context *wb_cmd_getpwent_send(TALLOC_CTX *mem_ctx,
+		struct wbsrv_service *service, struct wbsrv_pwent *pwent,
+		uint32_t max_users)
+{
+	struct composite_context *ctx, *result;
+	struct cmd_getpwent_state *state;
+
+	DEBUG(5, ("wb_cmd_getpwent_send called\n"));
+
+	result = composite_create(mem_ctx, service->task->event_ctx);
+	if (!result) return NULL;
+
+	state = talloc(mem_ctx, struct cmd_getpwent_state);
+	if (composite_nomem(state, result)) return result;
+
+	state->ctx = result;
+	result->private_data = state;
+	state->service = service;
+	state->pwent = pwent;
+	state->max_users = max_users;
+	state->num_users = 0;
+
+	/* If there are users left in the libnet_UserList and we're below the
+	 * maximum number of users to get per winbind getpwent call, use
+	 * getpwnam to get the winbindd_pw struct */
+	if (pwent->page_index < pwent->user_list->out.count) {
+		int idx = pwent->page_index;
+		char *username = talloc_strdup(state,
+			pwent->user_list->out.users[idx].username);
+
+		pwent->page_index++;
+		ctx = wb_cmd_getpwnam_send(state, service, username);
+		if (composite_nomem(ctx, state->ctx)) return result;
+
+		composite_continue(state->ctx, ctx, cmd_getpwent_recv_pwnam,
+			state);
+	} else {
+	/* If there is no valid user left, call libnet_UserList to get a new
+	 * list of users. */
+		composite_error(state->ctx, NT_STATUS_NO_MORE_ENTRIES);
+	}
+	return result;
+}
+
+static void cmd_getpwent_recv_pwnam(struct composite_context *ctx)
+{
+	struct cmd_getpwent_state *state =
+		talloc_get_type(ctx->async.private_data,
+				struct cmd_getpwent_state);
+	struct winbindd_pw *pw;
+
+	DEBUG(5, ("cmd_getpwent_recv_pwnam called\n"));
+
+	state->ctx->status = wb_cmd_getpwnam_recv(ctx, state, &pw);
+	if (!composite_is_ok(state->ctx)) return;
+
+	/*FIXME: Cheat for now and only get one user per call */
+	state->result = pw;
+
+	composite_done(state->ctx);
+}
+
+NTSTATUS wb_cmd_getpwent_recv(struct composite_context *ctx,
+		TALLOC_CTX *mem_ctx, struct winbindd_pw **pw,
+		uint32_t *num_users)
+{
+	NTSTATUS status = composite_wait(ctx);
+
+	DEBUG(5, ("wb_cmd_getpwent_recv called\n"));
+
+	if (NT_STATUS_IS_OK(status)) {
+		struct cmd_getpwent_state *state =
+			talloc_get_type(ctx->private_data,
+					struct cmd_getpwent_state);
+		*pw = talloc_steal(mem_ctx, state->result);
+		/*FIXME: Cheat and only get oner user */
+		*num_users = 1;
+	}
+
+	talloc_free(ctx);
+	return status;
+}
+
diff --git a/source4/winbind/wb_samba3_cmd.c b/source4/winbind/wb_samba3_cmd.c
index 22f9fd5f5ac..af361794ed9 100644
--- a/source4/winbind/wb_samba3_cmd.c
+++ b/source4/winbind/wb_samba3_cmd.c
@@ -798,13 +798,55 @@ static void setpwent_recv(struct composite_context *ctx)
 	wbsrv_samba3_async_epilogue(status, s3call);
 }
 
+static void getpwent_recv(struct composite_context *ctx);
+
 NTSTATUS wbsrv_samba3_getpwent(struct wbsrv_samba3_call *s3call)
 {
+	struct composite_context *ctx;
+	struct wbsrv_service *service = s3call->wbconn->listen_socket->service;
+	struct wbsrv_pwent *pwent;
+
 	DEBUG(5, ("wbsrv_samba3_getpwent called\n"));
-	s3call->response.result = WINBINDD_ERROR;
+
+	NT_STATUS_HAVE_NO_MEMORY(s3call->wbconn->protocol_private_data);
+
+	pwent = talloc_get_type(s3call->wbconn->protocol_private_data,
+			struct wbsrv_pwent);
+	NT_STATUS_HAVE_NO_MEMORY(pwent);
+
+	ctx = wb_cmd_getpwent_send(s3call, service, pwent,
+			s3call->request.data.num_entries);
+	NT_STATUS_HAVE_NO_MEMORY(ctx);
+
+	ctx->async.fn = getpwent_recv;
+	ctx->async.private_data = s3call;
+	s3call->flags |= WBSRV_CALL_FLAGS_REPLY_ASYNC;
 	return NT_STATUS_OK;
 }
 
+static void getpwent_recv(struct composite_context *ctx)
+{
+	struct wbsrv_samba3_call *s3call =
+		talloc_get_type(ctx->async.private_data,
+				struct wbsrv_samba3_call);
+	NTSTATUS status;
+	struct winbindd_pw *pw;
+	uint32_t num_users;
+
+	DEBUG(5, ("getpwent_recv called\n"));
+
+	status = wb_cmd_getpwent_recv(ctx, s3call, &pw, &num_users);
+	if (NT_STATUS_IS_OK(status)) {
+		uint32_t extra_len = sizeof(struct winbindd_pw) * num_users;
+
+		s3call->response.data.num_entries = num_users;
+		s3call->response.extra_data.data = pw;
+		s3call->response.length += extra_len;
+	}
+
+	wbsrv_samba3_async_epilogue(status, s3call);
+}
+
 NTSTATUS wbsrv_samba3_endpwent(struct wbsrv_samba3_call *s3call)
 {
 	struct wbsrv_pwent *pwent =