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Diffstat (limited to 'source4/librpc/rpc/dcerpc_tcp.c')
-rw-r--r--source4/librpc/rpc/dcerpc_tcp.c382
1 files changed, 0 insertions, 382 deletions
diff --git a/source4/librpc/rpc/dcerpc_tcp.c b/source4/librpc/rpc/dcerpc_tcp.c
deleted file mode 100644
index 130f20a861..0000000000
--- a/source4/librpc/rpc/dcerpc_tcp.c
+++ /dev/null
@@ -1,382 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
-
- dcerpc over TCP transport
-
- Copyright (C) Andrew Tridgell 2003
-
- 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 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-
-#define MIN_HDR_SIZE 16
-
-struct tcp_blob {
- struct tcp_blob *next, *prev;
- DATA_BLOB data;
-};
-
-/* transport private information used by TCP pipe transport */
-struct tcp_private {
- struct event_context *event_ctx;
- struct fd_event *fde;
- int fd;
- char *server_name;
- uint32_t port;
-
- struct tcp_blob *pending_send;
-
- struct {
- size_t received;
- DATA_BLOB data;
- uint_t pending_count;
- } recv;
-};
-
-
-/*
- mark the socket dead
-*/
-static void tcp_sock_dead(struct dcerpc_pipe *p, NTSTATUS status)
-{
- struct tcp_private *tcp = p->transport.private;
-
- if (tcp && tcp->fd != -1) {
- close(tcp->fd);
- tcp->fd = -1;
- }
-
- /* wipe any pending sends */
- while (tcp->pending_send) {
- struct tcp_blob *blob = tcp->pending_send;
- DLIST_REMOVE(tcp->pending_send, blob);
- talloc_free(blob);
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- p->transport.recv_data(p, NULL, status);
- }
-}
-
-/*
- process send requests
-*/
-static void tcp_process_send(struct dcerpc_pipe *p)
-{
- struct tcp_private *tcp = p->transport.private;
-
- while (tcp->pending_send) {
- struct tcp_blob *blob = tcp->pending_send;
- ssize_t ret = write(tcp->fd, blob->data.data, blob->data.length);
- if (ret == -1) {
- if (errno != EAGAIN && errno != EINTR) {
- tcp_sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- }
- break;
- }
- if (ret == 0) {
- tcp_sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- break;
- }
-
- blob->data.data += ret;
- blob->data.length -= ret;
-
- if (blob->data.length != 0) {
- break;
- }
-
- DLIST_REMOVE(tcp->pending_send, blob);
- talloc_free(blob);
- }
-
- if (tcp->pending_send == NULL) {
- tcp->fde->flags &= ~EVENT_FD_WRITE;
- }
-}
-
-
-/*
- process recv requests
-*/
-static void tcp_process_recv(struct dcerpc_pipe *p)
-{
- struct tcp_private *tcp = p->transport.private;
- ssize_t ret;
-
- if (tcp->recv.data.data == NULL) {
- tcp->recv.data = data_blob_talloc(tcp, NULL, MIN_HDR_SIZE);
- }
-
- /* read in the base header to get the fragment length */
- if (tcp->recv.received < MIN_HDR_SIZE) {
- uint32_t frag_length;
-
- ret = read(tcp->fd, tcp->recv.data.data,
- MIN_HDR_SIZE - tcp->recv.received);
- if (ret == -1) {
- if (errno != EAGAIN && errno != EINTR) {
- tcp_sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- }
- return;
- }
- if (ret == 0) {
- tcp_sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- return;
- }
-
- tcp->recv.received += ret;
-
- if (tcp->recv.received != MIN_HDR_SIZE) {
- return;
- }
- frag_length = dcerpc_get_frag_length(&tcp->recv.data);
-
- tcp->recv.data.data = talloc_realloc(tcp, tcp->recv.data.data,
- frag_length);
- if (tcp->recv.data.data == NULL) {
- tcp_sock_dead(p, NT_STATUS_NO_MEMORY);
- return;
- }
- tcp->recv.data.length = frag_length;
- }
-
- /* read in the rest of the packet */
- ret = read(tcp->fd, tcp->recv.data.data + tcp->recv.received,
- tcp->recv.data.length - tcp->recv.received);
- if (ret == -1) {
- if (errno != EAGAIN && errno != EINTR) {
- tcp_sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- }
- return;
- }
- if (ret == 0) {
- tcp_sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- return;
- }
-
- tcp->recv.received += ret;
-
- if (tcp->recv.received != tcp->recv.data.length) {
- return;
- }
-
- /* we have a full packet */
- p->transport.recv_data(p, &tcp->recv.data, NT_STATUS_OK);
- talloc_free(tcp->recv.data.data);
- tcp->recv.data = data_blob(NULL, 0);
- tcp->recv.received = 0;
- tcp->recv.pending_count--;
- if (tcp->recv.pending_count == 0) {
- tcp->fde->flags &= ~EVENT_FD_READ;
- }
-}
-
-/*
- called when a IO is triggered by the events system
-*/
-static void tcp_io_handler(struct event_context *ev, struct fd_event *fde,
- time_t t, uint16_t flags)
-{
- struct dcerpc_pipe *p = fde->private;
- struct tcp_private *tcp = p->transport.private;
-
- if (flags & EVENT_FD_WRITE) {
- tcp_process_send(p);
- }
-
- if (tcp->fd == -1) {
- return;
- }
-
- if (flags & EVENT_FD_READ) {
- tcp_process_recv(p);
- }
-}
-
-/*
- initiate a read request
-*/
-static NTSTATUS tcp_send_read(struct dcerpc_pipe *p)
-{
- struct tcp_private *tcp = p->transport.private;
-
- tcp->recv.pending_count++;
- if (tcp->recv.pending_count == 1) {
- tcp->fde->flags |= EVENT_FD_READ;
- }
- return NT_STATUS_OK;
-}
-
-/*
- send an initial pdu in a multi-pdu sequence
-*/
-static NTSTATUS tcp_send_request(struct dcerpc_pipe *p, DATA_BLOB *data, BOOL trigger_read)
-{
- struct tcp_private *tcp = p->transport.private;
- struct tcp_blob *blob;
-
- blob = talloc_p(tcp, struct tcp_blob);
- if (blob == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- blob->data = data_blob_talloc(blob, data->data, data->length);
- if (blob->data.data == NULL) {
- talloc_free(blob);
- return NT_STATUS_NO_MEMORY;
- }
-
- DLIST_ADD_END(tcp->pending_send, blob, struct tcp_blob *);
-
- tcp->fde->flags |= EVENT_FD_WRITE;
-
- if (trigger_read) {
- tcp_send_read(p);
- }
-
- return NT_STATUS_OK;
-}
-
-/*
- return the event context so the caller can process asynchronously
-*/
-static struct event_context *tcp_event_context(struct dcerpc_pipe *p)
-{
- struct tcp_private *tcp = p->transport.private;
-
- return tcp->event_ctx;
-}
-
-/*
- shutdown TCP pipe connection
-*/
-static NTSTATUS tcp_shutdown_pipe(struct dcerpc_pipe *p)
-{
- tcp_sock_dead(p, NT_STATUS_OK);
-
- return NT_STATUS_OK;
-}
-
-/*
- return TCP server name
-*/
-static const char *tcp_peer_name(struct dcerpc_pipe *p)
-{
- struct tcp_private *tcp = p->transport.private;
- return tcp->server_name;
-}
-
-/*
- open a rpc connection to a named pipe
-*/
-NTSTATUS dcerpc_pipe_open_tcp(struct dcerpc_pipe **p,
- const char *server,
- uint32_t port,
- int family)
-{
- struct tcp_private *tcp;
- int fd, gai_err;
- struct fd_event fde;
- struct addrinfo hints, *res, *tmpres;
- char portname[16];
-
- if (port == 0) {
- port = EPMAPPER_PORT;
- }
-
- memset(&hints, 0, sizeof(struct addrinfo));
-
- hints.ai_family = family;
- hints.ai_socktype = SOCK_STREAM;
-
- snprintf(portname, sizeof(portname)-1, "%d", port);
-
- gai_err = getaddrinfo(server, portname, &hints, &res);
- if (gai_err < 0)
- {
- DEBUG(0, ("Unable to connect to %s:%d : %s\n", server, port, gai_strerror(gai_err)));
- return NT_STATUS_BAD_NETWORK_NAME;
- }
-
- tmpres = res;
-
- while (tmpres) {
- fd = socket(tmpres->ai_family, tmpres->ai_socktype, tmpres->ai_protocol);
-
- if(fd >= 0) {
- if (connect(fd, tmpres->ai_addr, tmpres->ai_addrlen) == 0)
- break;
- fd = -1;
- }
-
- tmpres = tmpres->ai_next;
- }
-
- freeaddrinfo(res);
-
- if (fd == -1) {
- return NT_STATUS_PORT_CONNECTION_REFUSED;
- }
-
- set_socket_options(fd, lp_socket_options());
-
- if (!(*p = dcerpc_pipe_init())) {
- return NT_STATUS_NO_MEMORY;
- }
-
- /*
- fill in the transport methods
- */
- (*p)->transport.transport = NCACN_IP_TCP;
- (*p)->transport.private = NULL;
-
- (*p)->transport.send_request = tcp_send_request;
- (*p)->transport.send_read = tcp_send_read;
- (*p)->transport.event_context = tcp_event_context;
- (*p)->transport.recv_data = NULL;
-
- (*p)->transport.shutdown_pipe = tcp_shutdown_pipe;
- (*p)->transport.peer_name = tcp_peer_name;
-
- tcp = talloc((*p), sizeof(*tcp));
- if (!tcp) {
- dcerpc_pipe_close(*p);
- return NT_STATUS_NO_MEMORY;
- }
-
- tcp->fd = fd;
- tcp->server_name = talloc_strdup((*p), server);
- tcp->event_ctx = event_context_init(tcp);
- tcp->pending_send = NULL;
- tcp->recv.received = 0;
- tcp->recv.data = data_blob(NULL, 0);
- tcp->recv.pending_count = 0;
-
- fde.fd = fd;
- fde.flags = 0;
- fde.handler = tcp_io_handler;
- fde.private = *p;
-
- tcp->fde = event_add_fd(tcp->event_ctx, &fde);
-
- (*p)->transport.private = tcp;
-
- /* ensure we don't get SIGPIPE */
- BlockSignals(True,SIGPIPE);
-
- return NT_STATUS_OK;
-}