diff options
Diffstat (limited to 'libcli/named_pipe_auth')
| -rw-r--r-- | libcli/named_pipe_auth/config.mk | 4 | ||||
| -rw-r--r-- | libcli/named_pipe_auth/npa_tstream.c | 1059 | ||||
| -rw-r--r-- | libcli/named_pipe_auth/npa_tstream.h | 59 |
3 files changed, 1122 insertions, 0 deletions
diff --git a/libcli/named_pipe_auth/config.mk b/libcli/named_pipe_auth/config.mk new file mode 100644 index 0000000000..6d44ef4141 --- /dev/null +++ b/libcli/named_pipe_auth/config.mk @@ -0,0 +1,4 @@ +[SUBSYSTEM::NAMED_PIPE_AUTH_TSTREAM] +PUBLIC_DEPENDENCIES = NDR_NAMED_PIPE_AUTH TEVENT TSOCKET + +NAMED_PIPE_AUTH_TSTREAM_OBJ_FILES = ../libcli/named_pipe_auth/npa_tstream.o diff --git a/libcli/named_pipe_auth/npa_tstream.c b/libcli/named_pipe_auth/npa_tstream.c new file mode 100644 index 0000000000..c1a293eac4 --- /dev/null +++ b/libcli/named_pipe_auth/npa_tstream.c @@ -0,0 +1,1059 @@ +/* + Unix SMB/CIFS implementation. + + Copyright (C) Stefan Metzmacher 2009 + + 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 "system/network.h" +#include "../util/tevent_unix.h" +#include "../lib/tsocket/tsocket.h" +#include "../lib/tsocket/tsocket_internal.h" +#include "../librpc/gen_ndr/ndr_named_pipe_auth.h" +#include "../libcli/named_pipe_auth/npa_tstream.h" +#include "libcli/raw/smb.h" + +static const struct tstream_context_ops tstream_npa_ops; + +struct tstream_npa { + struct tstream_context *unix_stream; + + uint16_t file_type; + + struct iovec pending; +}; + +struct tstream_npa_connect_state { + struct { + struct tevent_context *ev; + struct smb_iconv_convenience *smb_iconv_c; + } caller; + + const char *unix_path; + struct tsocket_address *unix_laddr; + struct tsocket_address *unix_raddr; + struct tstream_context *unix_stream; + + struct named_pipe_auth_req auth_req; + DATA_BLOB auth_req_blob; + struct iovec auth_req_iov; + + struct named_pipe_auth_rep auth_rep; + DATA_BLOB auth_rep_blob; +}; + +static void tstream_npa_connect_unix_done(struct tevent_req *subreq); + +struct tevent_req *tstream_npa_connect_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smb_iconv_convenience *smb_iconv_c, + const char *directory, + const char *npipe, + const struct tsocket_address *client, + const char *client_name, + const struct tsocket_address *server, + const char *server_name, + const struct netr_SamInfo3 *info3, + DATA_BLOB session_key) +{ + struct tevent_req *req; + struct tstream_npa_connect_state *state; + struct tevent_req *subreq; + int ret; + enum ndr_err_code ndr_err; + + req = tevent_req_create(mem_ctx, &state, + struct tstream_npa_connect_state); + if (!req) { + return NULL; + } + + state->caller.ev = ev; + state->caller.smb_iconv_c = smb_iconv_c; + + state->unix_path = talloc_asprintf(state, "%s/%s", + directory, + npipe); + if (tevent_req_nomem(state->unix_path, req)) { + goto post; + } + + ret = tsocket_address_unix_from_path(state, + "", + &state->unix_laddr); + if (ret == -1) { + tevent_req_error(req, errno); + goto post; + } + + ret = tsocket_address_unix_from_path(state, + state->unix_path, + &state->unix_raddr); + if (ret == -1) { + tevent_req_error(req, errno); + goto post; + } + + ZERO_STRUCT(state->auth_req); + if (client) { + struct named_pipe_auth_req_info2 *info2; + + if (!server) { + tevent_req_error(req, EINVAL); + goto post; + } + + state->auth_req.level = 2; + info2 = &state->auth_req.info.info2; + + info2->client_name = client_name; + info2->client_addr = tsocket_address_inet_addr_string(client, state); + if (!info2->client_addr) { + /* errno might be EINVAL */ + tevent_req_error(req, errno); + goto post; + } + info2->client_port = tsocket_address_inet_port(client); + if (!info2->client_name) { + info2->client_name = info2->client_addr; + } + + info2->server_addr = tsocket_address_inet_addr_string(server, state); + if (!info2->server_addr) { + /* errno might be EINVAL */ + tevent_req_error(req, errno); + goto post; + } + info2->server_port = tsocket_address_inet_port(server); + if (!info2->server_name) { + info2->server_name = info2->server_addr; + } + + info2->sam_info3 = discard_const_p(struct netr_SamInfo3, info3); + info2->session_key_length = session_key.length; + info2->session_key = session_key.data; + } else if (info3) { + state->auth_req.level = 1; + state->auth_req.info.info1 = *info3; + } else { + state->auth_req.level = 0; + } + + if (DEBUGLVL(10)) { + NDR_PRINT_DEBUG(named_pipe_auth_req, &state->auth_req); + } + + ndr_err = ndr_push_struct_blob(&state->auth_req_blob, + state, smb_iconv_c, &state->auth_req, + (ndr_push_flags_fn_t)ndr_push_named_pipe_auth_req); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + tevent_req_error(req, EINVAL); + goto post; + } + + state->auth_req_iov.iov_base = state->auth_req_blob.data; + state->auth_req_iov.iov_len = state->auth_req_blob.length; + + subreq = tstream_unix_connect_send(state, + state->caller.ev, + state->unix_laddr, + state->unix_raddr); + if (tevent_req_nomem(subreq, req)) { + goto post; + } + tevent_req_set_callback(subreq, tstream_npa_connect_unix_done, req); + + return req; + +post: + tevent_req_post(req, ev); + return req; +} + +static void tstream_npa_connect_writev_done(struct tevent_req *subreq); + +static void tstream_npa_connect_unix_done(struct tevent_req *subreq) +{ + struct tevent_req *req = + tevent_req_callback_data(subreq, + struct tevent_req); + struct tstream_npa_connect_state *state = + tevent_req_data(req, + struct tstream_npa_connect_state); + int ret; + int sys_errno; + + ret = tstream_unix_connect_recv(subreq, &sys_errno, + state, &state->unix_stream); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + subreq = tstream_writev_send(state, + state->caller.ev, + state->unix_stream, + &state->auth_req_iov, 1); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, tstream_npa_connect_writev_done, req); +} + +static int tstream_npa_connect_next_vector(struct tstream_context *unix_stream, + void *private_data, + TALLOC_CTX *mem_ctx, + struct iovec **_vector, + size_t *_count); +static void tstream_npa_connect_readv_done(struct tevent_req *subreq); + +static void tstream_npa_connect_writev_done(struct tevent_req *subreq) +{ + struct tevent_req *req = + tevent_req_callback_data(subreq, + struct tevent_req); + struct tstream_npa_connect_state *state = + tevent_req_data(req, + struct tstream_npa_connect_state); + int ret; + int sys_errno; + + ret = tstream_writev_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + state->auth_rep_blob = data_blob_const(NULL, 0); + + subreq = tstream_readv_pdu_send(state, state->caller.ev, + state->unix_stream, + tstream_npa_connect_next_vector, + state); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, tstream_npa_connect_readv_done, req); +} + +static int tstream_npa_connect_next_vector(struct tstream_context *unix_stream, + void *private_data, + TALLOC_CTX *mem_ctx, + struct iovec **_vector, + size_t *_count) +{ + struct tstream_npa_connect_state *state = talloc_get_type_abort(private_data, + struct tstream_npa_connect_state); + struct iovec *vector; + size_t count; + off_t ofs = 0; + + if (state->auth_rep_blob.length == 0) { + state->auth_rep_blob = data_blob_talloc(state, NULL, 4); + if (!state->auth_rep_blob.data) { + return -1; + } + } else if (state->auth_rep_blob.length == 4) { + uint32_t msg_len; + + ofs = 4; + + msg_len = RIVAL(state->auth_rep_blob.data, 0); + + if (msg_len > 0x00FFFFFF) { + errno = EMSGSIZE; + return -1; + } + + if (msg_len == 0) { + errno = EMSGSIZE; + return -1; + } + + msg_len += ofs; + + state->auth_rep_blob.data = talloc_realloc(state, + state->auth_rep_blob.data, + uint8_t, msg_len); + if (!state->auth_rep_blob.data) { + return -1; + } + state->auth_rep_blob.length = msg_len; + } else { + *_vector = NULL; + *_count = 0; + return 0; + } + + /* we need to get a message header */ + vector = talloc_array(mem_ctx, struct iovec, 1); + if (!vector) { + return -1; + } + vector[0].iov_base = state->auth_rep_blob.data + ofs; + vector[0].iov_len = state->auth_rep_blob.length - ofs; + count = 1; + + *_vector = vector; + *_count = count; + return 0; +} + +static void tstream_npa_connect_readv_done(struct tevent_req *subreq) +{ + struct tevent_req *req = + tevent_req_callback_data(subreq, + struct tevent_req); + struct tstream_npa_connect_state *state = + tevent_req_data(req, + struct tstream_npa_connect_state); + int ret; + int sys_errno; + enum ndr_err_code ndr_err; + + ret = tstream_readv_pdu_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + DEBUG(10,("name_pipe_auth_rep(client)[%u]\n", + (uint32_t)state->auth_rep_blob.length)); + dump_data(11, state->auth_rep_blob.data, state->auth_rep_blob.length); + + ndr_err = ndr_pull_struct_blob( + &state->auth_rep_blob, state, + state->caller.smb_iconv_c, &state->auth_rep, + (ndr_pull_flags_fn_t)ndr_pull_named_pipe_auth_rep); + + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + DEBUG(0, ("ndr_pull_named_pipe_auth_rep failed: %s\n", + ndr_map_error2string(ndr_err))); + tevent_req_error(req, EIO); + return; + } + + if (DEBUGLVL(10)) { + NDR_PRINT_DEBUG(named_pipe_auth_rep, &state->auth_rep); + } + + if (state->auth_rep.length < 16) { + DEBUG(0, ("req invalid length: %u < 16\n", + state->auth_rep.length)); + tevent_req_error(req, EIO); + return; + } + + if (strcmp(NAMED_PIPE_AUTH_MAGIC, state->auth_rep.magic) != 0) { + DEBUG(0, ("req invalid magic: %s != %s\n", + state->auth_rep.magic, NAMED_PIPE_AUTH_MAGIC)); + tevent_req_error(req, EIO); + return; + } + + if (!NT_STATUS_IS_OK(state->auth_rep.status)) { + DEBUG(0, ("req failed: %s\n", + nt_errstr(state->auth_rep.status))); + tevent_req_error(req, EACCES); + return; + } + + if (state->auth_rep.level != state->auth_req.level) { + DEBUG(0, ("req invalid level: %u != %u\n", + state->auth_rep.level, state->auth_req.level)); + tevent_req_error(req, EIO); + return; + } + + tevent_req_done(req); +} + +int _tstream_npa_connect_recv(struct tevent_req *req, + int *perrno, + TALLOC_CTX *mem_ctx, + struct tstream_context **_stream, + uint16_t *_file_type, + uint16_t *_device_state, + uint64_t *_allocation_size, + const char *location) +{ + struct tstream_npa_connect_state *state = + tevent_req_data(req, + struct tstream_npa_connect_state); + struct tstream_context *stream; + struct tstream_npa *npas; + uint16_t device_state = 0; + uint64_t allocation_size = 0; + + if (tevent_req_is_unix_error(req, perrno)) { + tevent_req_received(req); + return -1; + } + + stream = tstream_context_create(mem_ctx, + &tstream_npa_ops, + &npas, + struct tstream_npa, + location); + if (!stream) { + return -1; + } + ZERO_STRUCTP(npas); + + npas->unix_stream = talloc_move(stream, &state->unix_stream); + switch (state->auth_rep.level) { + case 0: + case 1: + npas->file_type = FILE_TYPE_BYTE_MODE_PIPE; + device_state = 0x00ff; + allocation_size = 2048; + break; + case 2: + npas->file_type = state->auth_rep.info.info2.file_type; + device_state = state->auth_rep.info.info2.device_state; + allocation_size = state->auth_rep.info.info2.allocation_size; + break; + } + + *_stream = stream; + *_file_type = npas->file_type; + *_device_state = device_state; + *_allocation_size = allocation_size; + tevent_req_received(req); + return 0; +} + +static ssize_t tstream_npa_pending_bytes(struct tstream_context *stream) +{ + struct tstream_npa *npas = tstream_context_data(stream, + struct tstream_npa); + ssize_t ret; + + if (!npas->unix_stream) { + errno = ENOTCONN; + return -1; + } + + switch (npas->file_type) { + case FILE_TYPE_BYTE_MODE_PIPE: + ret = tstream_pending_bytes(npas->unix_stream); + break; + + case FILE_TYPE_MESSAGE_MODE_PIPE: + ret = npas->pending.iov_len; + break; + } + + return ret; +} + +struct tstream_npa_readv_state { + struct tstream_context *stream; + + struct iovec *vector; + size_t count; + + /* the header for message mode */ + uint8_t hdr[2]; + bool wait_for_hdr; + + int ret; +}; + +static void tstream_npa_readv_byte_mode_handler(struct tevent_req *subreq); +static int tstream_npa_readv_next_vector(struct tstream_context *stream, + void *private_data, + TALLOC_CTX *mem_ctx, + struct iovec **_vector, + size_t *_count); +static void tstream_npa_readv_msg_mode_handler(struct tevent_req *subreq); + +static struct tevent_req *tstream_npa_readv_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct tstream_context *stream, + struct iovec *vector, + size_t count) +{ + struct tevent_req *req; + struct tstream_npa_readv_state *state; + struct tstream_npa *npas = tstream_context_data(stream, struct tstream_npa); + struct tevent_req *subreq; + off_t ofs; + size_t left; + uint8_t *pbase; + + req = tevent_req_create(mem_ctx, &state, + struct tstream_npa_readv_state); + if (!req) { + return NULL; + } + + state->stream = stream; + state->ret = 0; + + if (!npas->unix_stream) { + tevent_req_error(req, ENOTCONN); + goto post; + } + + switch (npas->file_type) { + case FILE_TYPE_BYTE_MODE_PIPE: + state->vector = vector; + state->count = count; + + subreq = tstream_readv_send(state, + ev, + npas->unix_stream, + state->vector, + state->count); + if (tevent_req_nomem(subreq,req)) { + goto post; + } + tevent_req_set_callback(subreq, + tstream_npa_readv_byte_mode_handler, + req); + + return req; + + case FILE_TYPE_MESSAGE_MODE_PIPE: + /* + * we make a copy of the vector and prepend a header + * with the length + */ + state->vector = talloc_array(state, struct iovec, count); + if (tevent_req_nomem(state->vector, req)) { + goto post; + } + memcpy(state->vector, vector, sizeof(struct iovec)*count); + state->count = count; + + /* + * copy the pending buffer first + */ + ofs = 0; + left = npas->pending.iov_len; + pbase = (uint8_t *)npas->pending.iov_base; + + while (left > 0 && state->count > 0) { + uint8_t *base; + base = (uint8_t *)state->vector[0].iov_base; + if (left < state->vector[0].iov_len) { + memcpy(base, pbase + ofs, left); + + base += left; + state->vector[0].iov_base = base; + state->vector[0].iov_len -= left; + + ofs += left; + left = 0; + TALLOC_FREE(pbase); + ZERO_STRUCT(npas->pending); + break; + } + memcpy(base, pbase + ofs, state->vector[0].iov_len); + + ofs += state->vector[0].iov_len; + left -= state->vector[0].iov_len; + state->vector += 1; + state->count -= 1; + + if (left == 0) { + TALLOC_FREE(pbase); + ZERO_STRUCT(npas->pending); + break; + } + } + + if (left > 0) { + memmove(pbase, pbase + ofs, left); + npas->pending.iov_base = pbase; + npas->pending.iov_len = left; + /* + * this cannot fail and even if it + * fails we can handle it + */ + pbase = talloc_realloc(npas, pbase, uint8_t, left); + if (pbase) { + npas->pending.iov_base = pbase; + } + pbase = NULL; + } + + state->ret += ofs; + + if (state->count == 0) { + tevent_req_done(req); + goto post; + } + + ZERO_STRUCT(state->hdr); + state->wait_for_hdr = false; + + subreq = tstream_readv_pdu_send(state, + ev, + npas->unix_stream, + tstream_npa_readv_next_vector, + state); + if (tevent_req_nomem(subreq, req)) { + goto post; + } + tevent_req_set_callback(subreq, + tstream_npa_readv_msg_mode_handler, + req); + + return req; + } + + /* this can't happen */ + tevent_req_error(req, EINVAL); + goto post; + + post: + tevent_req_post(req, ev); + return req; +} + +static void tstream_npa_readv_byte_mode_handler(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct tstream_npa_readv_state *state = tevent_req_data(req, + struct tstream_npa_readv_state); + int ret; + int sys_errno; + + ret = tstream_readv_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + state->ret = ret; + + tevent_req_done(req); +} + +static int tstream_npa_readv_next_vector(struct tstream_context *unix_stream, + void *private_data, + TALLOC_CTX *mem_ctx, + struct iovec **_vector, + size_t *_count) +{ + struct tstream_npa_readv_state *state = talloc_get_type_abort(private_data, + struct tstream_npa_readv_state); + struct tstream_npa *npas = tstream_context_data(state->stream, + struct tstream_npa); + struct iovec *vector; + size_t count; + uint16_t msg_len; + size_t left; + + if (state->count == 0) { + *_vector = NULL; + *_count = 0; + return 0; + } + + if (!state->wait_for_hdr) { + /* we need to get a message header */ + vector = talloc_array(mem_ctx, struct iovec, 1); + if (!vector) { + return -1; + } + ZERO_STRUCT(state->hdr); + vector[0].iov_base = state->hdr; + vector[0].iov_len = sizeof(state->hdr); + + count = 1; + + state->wait_for_hdr = true; + + *_vector = vector; + *_count = count; + return 0; + } + + /* and now fill the callers buffers and maybe the pending buffer */ + state->wait_for_hdr = false; + + msg_len = SVAL(state->hdr, 0); + + if (msg_len == 0) { + errno = EIO; + return -1; + } + + state->wait_for_hdr = false; + + /* +1 because we may need to fill the pending buffer */ + vector = talloc_array(mem_ctx, struct iovec, state->count + 1); + if (!vector) { + return -1; + } + + count = 0; + left = msg_len; + while (left > 0 && state->count > 0) { + if (left < state->vector[0].iov_len) { + uint8_t *base; + base = (uint8_t *)state->vector[0].iov_base; + vector[count].iov_base = base; + vector[count].iov_len = left; + count++; + base += left; + state->vector[0].iov_base = base; + state->vector[0].iov_len -= left; + break; + } + vector[count] = state->vector[0]; + count++; + left -= state->vector[0].iov_len; + state->vector += 1; + state->count -= 1; + } + + if (left > 0) { + /* + * if the message if longer than the buffers the caller + * requested, we need to consume the rest of the message + * into the pending buffer, where the next readv can + * be served from. + */ + npas->pending.iov_base = talloc_array(npas, uint8_t, left); + if (!npas->pending.iov_base) { + return -1; + } + npas->pending.iov_len = left; + + vector[count] = npas->pending; + count++; + } + + state->ret += (msg_len - left); + + *_vector = vector; + *_count = count; + return 0; +} + +static void tstream_npa_readv_msg_mode_handler(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + int ret; + int sys_errno; + + ret = tstream_readv_pdu_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + /* + * we do not set state->ret here as ret includes the headr size. + * we set it in tstream_npa_readv_pdu_next_vector() + */ + + tevent_req_done(req); +} + +static int tstream_npa_readv_recv(struct tevent_req *req, + int *perrno) +{ + struct tstream_npa_readv_state *state = tevent_req_data(req, + struct tstream_npa_readv_state); + int ret; + + ret = tsocket_simple_int_recv(req, perrno); + if (ret == 0) { + ret = state->ret; + } + + tevent_req_received(req); + return ret; +} + +struct tstream_npa_writev_state { + const struct iovec *vector; + size_t count; + + /* the header for message mode */ + uint8_t hdr[2]; + + int ret; +}; + +static void tstream_npa_writev_handler(struct tevent_req *subreq); + +static struct tevent_req *tstream_npa_writev_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct tstream_context *stream, + const struct iovec *vector, + size_t count) +{ + struct tevent_req *req; + struct tstream_npa_writev_state *state; + struct tstream_npa *npas = tstream_context_data(stream, struct tstream_npa); + struct tevent_req *subreq; + size_t msg_len; + size_t i; + struct iovec *new_vector; + + req = tevent_req_create(mem_ctx, &state, + struct tstream_npa_writev_state); + if (!req) { + return NULL; + } + + state->ret = 0; + + if (!npas->unix_stream) { + tevent_req_error(req, ENOTCONN); + goto post; + } + + switch (npas->file_type) { + case FILE_TYPE_BYTE_MODE_PIPE: + state->vector = vector; + state->count = count; + break; + + case FILE_TYPE_MESSAGE_MODE_PIPE: + /* + * we make a copy of the vector and prepend a header + * with the length + */ + new_vector = talloc_array(state, struct iovec, count + 1); + if (tevent_req_nomem(new_vector, req)) { + goto post; + } + new_vector[0].iov_base = state->hdr; + new_vector[0].iov_len = sizeof(state->hdr); + memcpy(new_vector + 1, vector, sizeof(struct iovec)*count); + + state->vector = new_vector; + state->count = count + 1; + + msg_len = 0; + for (i=0; i < count; i++) { + msg_len += vector[i].iov_len; + } + + if (msg_len > UINT16_MAX) { + tevent_req_error(req, EMSGSIZE); + goto post; + } + + SSVAL(state->hdr, 0, msg_len); + break; + } + + subreq = tstream_writev_send(state, + ev, + npas->unix_stream, + state->vector, + state->count); + if (tevent_req_nomem(subreq, req)) { + goto post; + } + tevent_req_set_callback(subreq, tstream_npa_writev_handler, req); + + return req; + + post: + tevent_req_post(req, ev); + return req; +} + +static void tstream_npa_writev_handler(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct tstream_npa_writev_state *state = tevent_req_data(req, + struct tstream_npa_writev_state); + int ret; + int sys_errno; + + ret = tstream_writev_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + state->ret = ret; + + tevent_req_done(req); +} + +static int tstream_npa_writev_recv(struct tevent_req *req, + int *perrno) +{ + struct tstream_npa_writev_state *state = tevent_req_data(req, + struct tstream_npa_writev_state); + int ret; + + ret = tsocket_simple_int_recv(req, perrno); + if (ret == 0) { + ret = state->ret; + } + + tevent_req_received(req); + return ret; +} + +struct tstream_npa_disconnect_state { + struct tstream_context *stream; +}; + +static void tstream_npa_disconnect_handler(struct tevent_req *subreq); + +static struct tevent_req *tstream_npa_disconnect_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct tstream_context *stream) +{ + struct tstream_npa *npas = tstream_context_data(stream, struct tstream_npa); + struct tevent_req *req; + struct tstream_npa_disconnect_state *state; + struct tevent_req *subreq; + + req = tevent_req_create(mem_ctx, &state, + struct tstream_npa_disconnect_state); + if (req == NULL) { + return NULL; + } + + state->stream = stream; + + if (!npas->unix_stream) { + tevent_req_error(req, ENOTCONN); + goto post; + } + + subreq = tstream_disconnect_send(state, + ev, + npas->unix_stream); + if (tevent_req_nomem(subreq, req)) { + goto post; + } + tevent_req_set_callback(subreq, tstream_npa_disconnect_handler, req); + + return req; + +post: + tevent_req_post(req, ev); + return req; +} + +static void tstream_npa_disconnect_handler(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct tstream_npa_disconnect_state *state = tevent_req_data(req, + struct tstream_npa_disconnect_state); + struct tstream_context *stream = state->stream; + struct tstream_npa *npas = tstream_context_data(stream, struct tstream_npa); + int ret; + int sys_errno; + + ret = tstream_disconnect_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + tevent_req_error(req, sys_errno); + return; + } + + TALLOC_FREE(npas->unix_stream); + + tevent_req_done(req); +} + +static int tstream_npa_disconnect_recv(struct tevent_req *req, + int *perrno) +{ + int ret; + + ret = tsocket_simple_int_recv(req, perrno); + + tevent_req_received(req); + return ret; +} + +static const struct tstream_context_ops tstream_npa_ops = { + .name = "npa", + + .pending_bytes = tstream_npa_pending_bytes, + + .readv_send = tstream_npa_readv_send, + .readv_recv = tstream_npa_readv_recv, + + .writev_send = tstream_npa_writev_send, + .writev_recv = tstream_npa_writev_recv, + + .disconnect_send = tstream_npa_disconnect_send, + .disconnect_recv = tstream_npa_disconnect_recv, +}; + +int _tstream_npa_existing_socket(TALLOC_CTX *mem_ctx, + int fd, + uint16_t file_type, + struct tstream_context **_stream, + const char *location) +{ + struct tstream_context *stream; + struct tstream_npa *npas; + int ret; + + switch (file_type) { + case FILE_TYPE_BYTE_MODE_PIPE: + break; + case FILE_TYPE_MESSAGE_MODE_PIPE: + break; + default: + errno = EINVAL; + return -1; + } + + stream = tstream_context_create(mem_ctx, + &tstream_npa_ops, + &npas, + struct tstream_npa, + location); + if (!stream) { + return -1; + } + ZERO_STRUCTP(npas); + + npas->file_type = file_type; + + ret = tstream_bsd_existing_socket(stream, fd, + &npas->unix_stream); + if (ret == -1) { + int saved_errno = errno; + talloc_free(stream); + errno = saved_errno; + return -1; + } + + *_stream = stream; + return 0; +} + diff --git a/libcli/named_pipe_auth/npa_tstream.h b/libcli/named_pipe_auth/npa_tstream.h new file mode 100644 index 0000000000..6ffd7b8632 --- /dev/null +++ b/libcli/named_pipe_auth/npa_tstream.h @@ -0,0 +1,59 @@ +/* + Unix SMB/CIFS implementation. + + Copyright (C) Stefan Metzmacher 2009 + + 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/>. +*/ + +#ifndef NPA_TSTREAM_H +#define NPA_TSTREAM_H + +struct tevent_req; +struct tevent_context; +struct netr_SamInfo3; + +struct tevent_req *tstream_npa_connect_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smb_iconv_convenience *smb_iconv_c, + const char *directory, + const char *npipe, + const struct tsocket_address *client, + const char *client_name, + const struct tsocket_address *server, + const char *server_name, + const struct netr_SamInfo3 *info3, + DATA_BLOB session_key); +int _tstream_npa_connect_recv(struct tevent_req *req, + int *perrno, + TALLOC_CTX *mem_ctx, + struct tstream_context **stream, + uint16_t *file_type, + uint16_t *device_state, + uint64_t *allocation_size, + const char *location); +#define tstream_npa_connect_recv(req, perrno, mem_ctx, stream, f, d, a) \ + _tstream_npa_connect_recv(req, perrno, mem_ctx, stream, f, d, a, \ + __location__) + +int _tstream_npa_existing_socket(TALLOC_CTX *mem_ctx, + int fd, + uint16_t file_type, + struct tstream_context **_stream, + const char *location); +#define tstream_npa_existing_socket(mem_ctx, fd, ft, stream) \ + _tstream_npa_existing_socket(mem_ctx, fd, ft, stream, \ + __location__) + +#endif /* NPA_TSTREAM_H */ |