diff options
Diffstat (limited to 'nsswitch/libwbclient/wb_reqtrans.c')
| -rw-r--r-- | nsswitch/libwbclient/wb_reqtrans.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/nsswitch/libwbclient/wb_reqtrans.c b/nsswitch/libwbclient/wb_reqtrans.c deleted file mode 100644 index 753b08ed57..0000000000 --- a/nsswitch/libwbclient/wb_reqtrans.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - Async transfer of winbindd_request and _response structs - - Copyright (C) Volker Lendecke 2008 - - ** NOTE! The following LGPL license applies to the wbclient - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Library General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -#include "replace.h" -#include "system/filesys.h" -#include "system/network.h" -#include <talloc.h> -#include <tevent.h> -#include "lib/async_req/async_sock.h" -#include "lib/util/tevent_unix.h" -#include "nsswitch/winbind_struct_protocol.h" -#include "nsswitch/libwbclient/wbclient.h" -#include "nsswitch/libwbclient/wb_reqtrans.h" - -/* can't use DEBUG here... */ -#define DEBUG(a,b) - -struct req_read_state { - struct winbindd_request *wb_req; - size_t max_extra_data; - ssize_t ret; -}; - -static ssize_t wb_req_more(uint8_t *buf, size_t buflen, void *private_data); -static void wb_req_read_done(struct tevent_req *subreq); - -struct tevent_req *wb_req_read_send(TALLOC_CTX *mem_ctx, - struct tevent_context *ev, - int fd, size_t max_extra_data) -{ - struct tevent_req *req, *subreq; - struct req_read_state *state; - - req = tevent_req_create(mem_ctx, &state, struct req_read_state); - if (req == NULL) { - return NULL; - } - state->max_extra_data = max_extra_data; - - subreq = read_packet_send(state, ev, fd, 4, wb_req_more, state); - if (tevent_req_nomem(subreq, req)) { - return tevent_req_post(req, ev); - } - tevent_req_set_callback(subreq, wb_req_read_done, req); - return req; -} - -static ssize_t wb_req_more(uint8_t *buf, size_t buflen, void *private_data) -{ - struct req_read_state *state = talloc_get_type_abort( - private_data, struct req_read_state); - struct winbindd_request *req = (struct winbindd_request *)buf; - - if (buflen == 4) { - if (req->length != sizeof(struct winbindd_request)) { - DEBUG(0, ("wb_req_read_len: Invalid request size " - "received: %d (expected %d)\n", - (int)req->length, - (int)sizeof(struct winbindd_request))); - return -1; - } - return sizeof(struct winbindd_request) - 4; - } - - if (buflen > sizeof(struct winbindd_request)) { - /* We've been here, we're done */ - return 0; - } - - if ((state->max_extra_data != 0) - && (req->extra_len > state->max_extra_data)) { - DEBUG(3, ("Got request with %d bytes extra data on " - "unprivileged socket\n", (int)req->extra_len)); - return -1; - } - - return req->extra_len; -} - -static void wb_req_read_done(struct tevent_req *subreq) -{ - struct tevent_req *req = tevent_req_callback_data( - subreq, struct tevent_req); - struct req_read_state *state = tevent_req_data( - req, struct req_read_state); - int err; - uint8_t *buf; - - state->ret = read_packet_recv(subreq, state, &buf, &err); - TALLOC_FREE(subreq); - if (state->ret == -1) { - tevent_req_error(req, err); - return; - } - - state->wb_req = (struct winbindd_request *)buf; - - if (state->wb_req->extra_len != 0) { - state->wb_req->extra_data.data = - (char *)buf + sizeof(struct winbindd_request); - } else { - state->wb_req->extra_data.data = NULL; - } - tevent_req_done(req); -} - -ssize_t wb_req_read_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx, - struct winbindd_request **preq, int *err) -{ - struct req_read_state *state = tevent_req_data( - req, struct req_read_state); - - if (tevent_req_is_unix_error(req, err)) { - return -1; - } - *preq = talloc_move(mem_ctx, &state->wb_req); - return state->ret; -} - -struct req_write_state { - struct iovec iov[2]; - ssize_t ret; -}; - -static void wb_req_write_done(struct tevent_req *subreq); - -struct tevent_req *wb_req_write_send(TALLOC_CTX *mem_ctx, - struct tevent_context *ev, - struct tevent_queue *queue, int fd, - struct winbindd_request *wb_req) -{ - struct tevent_req *req, *subreq; - struct req_write_state *state; - int count = 1; - - req = tevent_req_create(mem_ctx, &state, struct req_write_state); - if (req == NULL) { - return NULL; - } - - state->iov[0].iov_base = (void *)wb_req; - state->iov[0].iov_len = sizeof(struct winbindd_request); - - if (wb_req->extra_len != 0) { - state->iov[1].iov_base = (void *)wb_req->extra_data.data; - state->iov[1].iov_len = wb_req->extra_len; - count = 2; - } - - subreq = writev_send(state, ev, queue, fd, true, state->iov, count); - if (tevent_req_nomem(subreq, req)) { - return tevent_req_post(req, ev); - } - tevent_req_set_callback(subreq, wb_req_write_done, req); - return req; -} - -static void wb_req_write_done(struct tevent_req *subreq) -{ - struct tevent_req *req = tevent_req_callback_data( - subreq, struct tevent_req); - struct req_write_state *state = tevent_req_data( - req, struct req_write_state); - int err; - - state->ret = writev_recv(subreq, &err); - TALLOC_FREE(subreq); - if (state->ret < 0) { - tevent_req_error(req, err); - return; - } - tevent_req_done(req); -} - -ssize_t wb_req_write_recv(struct tevent_req *req, int *err) -{ - struct req_write_state *state = tevent_req_data( - req, struct req_write_state); - - if (tevent_req_is_unix_error(req, err)) { - return -1; - } - return state->ret; -} - -struct resp_read_state { - struct winbindd_response *wb_resp; - ssize_t ret; -}; - -static ssize_t wb_resp_more(uint8_t *buf, size_t buflen, void *private_data); -static void wb_resp_read_done(struct tevent_req *subreq); - -struct tevent_req *wb_resp_read_send(TALLOC_CTX *mem_ctx, - struct tevent_context *ev, int fd) -{ - struct tevent_req *req, *subreq; - struct resp_read_state *state; - - req = tevent_req_create(mem_ctx, &state, struct resp_read_state); - if (req == NULL) { - return NULL; - } - - subreq = read_packet_send(state, ev, fd, 4, wb_resp_more, state); - if (tevent_req_nomem(subreq, req)) { - return tevent_req_post(req, ev); - } - tevent_req_set_callback(subreq, wb_resp_read_done, req); - return req; -} - -static ssize_t wb_resp_more(uint8_t *buf, size_t buflen, void *private_data) -{ - struct winbindd_response *resp = (struct winbindd_response *)buf; - - if (buflen == 4) { - if (resp->length < sizeof(struct winbindd_response)) { - DEBUG(0, ("wb_resp_read_len: Invalid response size " - "received: %d (expected at least%d)\n", - (int)resp->length, - (int)sizeof(struct winbindd_response))); - return -1; - } - } - return resp->length - buflen; -} - -static void wb_resp_read_done(struct tevent_req *subreq) -{ - struct tevent_req *req = tevent_req_callback_data( - subreq, struct tevent_req); - struct resp_read_state *state = tevent_req_data( - req, struct resp_read_state); - uint8_t *buf; - int err; - - state->ret = read_packet_recv(subreq, state, &buf, &err); - TALLOC_FREE(subreq); - if (state->ret == -1) { - tevent_req_error(req, err); - return; - } - - state->wb_resp = (struct winbindd_response *)buf; - - if (state->wb_resp->length > sizeof(struct winbindd_response)) { - state->wb_resp->extra_data.data = - (char *)buf + sizeof(struct winbindd_response); - } else { - state->wb_resp->extra_data.data = NULL; - } - tevent_req_done(req); -} - -ssize_t wb_resp_read_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx, - struct winbindd_response **presp, int *err) -{ - struct resp_read_state *state = tevent_req_data( - req, struct resp_read_state); - - if (tevent_req_is_unix_error(req, err)) { - return -1; - } - *presp = talloc_move(mem_ctx, &state->wb_resp); - return state->ret; -} - -struct resp_write_state { - struct iovec iov[2]; - ssize_t ret; -}; - -static void wb_resp_write_done(struct tevent_req *subreq); - -struct tevent_req *wb_resp_write_send(TALLOC_CTX *mem_ctx, - struct tevent_context *ev, - struct tevent_queue *queue, int fd, - struct winbindd_response *wb_resp) -{ - struct tevent_req *req, *subreq; - struct resp_write_state *state; - int count = 1; - - req = tevent_req_create(mem_ctx, &state, struct resp_write_state); - if (req == NULL) { - return NULL; - } - - state->iov[0].iov_base = (void *)wb_resp; - state->iov[0].iov_len = sizeof(struct winbindd_response); - - if (wb_resp->length > sizeof(struct winbindd_response)) { - state->iov[1].iov_base = (void *)wb_resp->extra_data.data; - state->iov[1].iov_len = - wb_resp->length - sizeof(struct winbindd_response); - count = 2; - } - - subreq = writev_send(state, ev, queue, fd, true, state->iov, count); - if (tevent_req_nomem(subreq, req)) { - return tevent_req_post(req, ev); - } - tevent_req_set_callback(subreq, wb_resp_write_done, req); - return req; -} - -static void wb_resp_write_done(struct tevent_req *subreq) -{ - struct tevent_req *req = tevent_req_callback_data( - subreq, struct tevent_req); - struct resp_write_state *state = tevent_req_data( - req, struct resp_write_state); - int err; - - state->ret = writev_recv(subreq, &err); - TALLOC_FREE(subreq); - if (state->ret < 0) { - tevent_req_error(req, err); - return; - } - tevent_req_done(req); -} - -ssize_t wb_resp_write_recv(struct tevent_req *req, int *err) -{ - struct resp_write_state *state = tevent_req_data( - req, struct resp_write_state); - - if (tevent_req_is_unix_error(req, err)) { - return -1; - } - return state->ret; -} - -struct wb_simple_trans_state { - struct tevent_context *ev; - int fd; - struct winbindd_response *wb_resp; -}; - -static void wb_simple_trans_write_done(struct tevent_req *subreq); -static void wb_simple_trans_read_done(struct tevent_req *subreq); - -struct tevent_req *wb_simple_trans_send(TALLOC_CTX *mem_ctx, - struct tevent_context *ev, - struct tevent_queue *queue, int fd, - struct winbindd_request *wb_req) -{ - struct tevent_req *req, *subreq; - struct wb_simple_trans_state *state; - - req = tevent_req_create(mem_ctx, &state, struct wb_simple_trans_state); - if (req == NULL) { - return NULL; - } - - wb_req->length = sizeof(struct winbindd_request); - - state->ev = ev; - state->fd = fd; - - subreq = wb_req_write_send(state, ev, queue, fd, wb_req); - if (tevent_req_nomem(subreq, req)) { - return tevent_req_post(req, ev); - } - tevent_req_set_callback(subreq, wb_simple_trans_write_done, req); - - return req; -} - -static void wb_simple_trans_write_done(struct tevent_req *subreq) -{ - struct tevent_req *req = tevent_req_callback_data( - subreq, struct tevent_req); - struct wb_simple_trans_state *state = tevent_req_data( - req, struct wb_simple_trans_state); - ssize_t ret; - int err; - - ret = wb_req_write_recv(subreq, &err); - TALLOC_FREE(subreq); - if (ret == -1) { - tevent_req_error(req, err); - return; - } - subreq = wb_resp_read_send(state, state->ev, state->fd); - if (tevent_req_nomem(subreq, req)) { - return; - } - tevent_req_set_callback(subreq, wb_simple_trans_read_done, req); -} - -static void wb_simple_trans_read_done(struct tevent_req *subreq) -{ - struct tevent_req *req = tevent_req_callback_data( - subreq, struct tevent_req); - struct wb_simple_trans_state *state = tevent_req_data( - req, struct wb_simple_trans_state); - ssize_t ret; - int err; - - ret = wb_resp_read_recv(subreq, state, &state->wb_resp, &err); - TALLOC_FREE(subreq); - if (ret == -1) { - tevent_req_error(req, err); - return; - } - - tevent_req_done(req); -} - -int wb_simple_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx, - struct winbindd_response **presponse, int *err) -{ - struct wb_simple_trans_state *state = tevent_req_data( - req, struct wb_simple_trans_state); - - if (tevent_req_is_unix_error(req, err)) { - return -1; - } - *presponse = talloc_move(mem_ctx, &state->wb_resp); - return 0; -} |