diff options
Diffstat (limited to 'source4/libnet/userinfo.c')
| -rw-r--r-- | source4/libnet/userinfo.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/source4/libnet/userinfo.c b/source4/libnet/userinfo.c new file mode 100644 index 0000000000..847997fc12 --- /dev/null +++ b/source4/libnet/userinfo.c @@ -0,0 +1,359 @@ +/* + Unix SMB/CIFS implementation. + + Copyright (C) Rafal Szczesniak 2005 + + 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/>. +*/ + +/* + a composite function for getting user information via samr pipe +*/ + +#include "includes.h" +#include "libcli/composite/composite.h" +#include "libnet/composite.h" +#include "librpc/gen_ndr/security.h" +#include "libcli/security/security.h" +#include "libnet/userman.h" +#include "libnet/userinfo.h" +#include "librpc/gen_ndr/ndr_samr_c.h" + + +struct userinfo_state { + struct dcerpc_pipe *pipe; + struct policy_handle domain_handle; + struct policy_handle user_handle; + uint16_t level; + struct samr_LookupNames lookup; + struct samr_OpenUser openuser; + struct samr_QueryUserInfo queryuserinfo; + struct samr_Close samrclose; + union samr_UserInfo *info; + + /* information about the progress */ + void (*monitor_fn)(struct monitor_msg *); +}; + + +static void continue_userinfo_lookup(struct rpc_request *req); +static void continue_userinfo_openuser(struct rpc_request *req); +static void continue_userinfo_getuser(struct rpc_request *req); +static void continue_userinfo_closeuser(struct rpc_request *req); + + +/** + * Stage 1 (optional): Look for a username in SAM server. + */ +static void continue_userinfo_lookup(struct rpc_request *req) +{ + struct composite_context *c; + struct userinfo_state *s; + struct rpc_request *openuser_req; + struct monitor_msg msg; + struct msg_rpc_lookup_name *msg_lookup; + + c = talloc_get_type(req->async.private_data, struct composite_context); + s = talloc_get_type(c->private_data, struct userinfo_state); + + /* receive samr_Lookup reply */ + c->status = dcerpc_ndr_request_recv(req); + if (!composite_is_ok(c)) return; + + /* there could be a problem with name resolving itself */ + if (!NT_STATUS_IS_OK(s->lookup.out.result)) { + composite_error(c, s->lookup.out.result); + return; + } + + /* issue a monitor message */ + if (s->monitor_fn) { + msg.type = mon_SamrLookupName; + msg_lookup = talloc(s, struct msg_rpc_lookup_name); + msg_lookup->rid = s->lookup.out.rids.ids; + msg_lookup->count = s->lookup.out.rids.count; + msg.data = (void*)msg_lookup; + msg.data_size = sizeof(*msg_lookup); + + s->monitor_fn(&msg); + } + + + /* have we actually got name resolved + - we're looking for only one at the moment */ + if (s->lookup.out.rids.count == 0) { + composite_error(c, NT_STATUS_NO_SUCH_USER); + } + + /* TODO: find proper status code for more than one rid found */ + + /* prepare parameters for LookupNames */ + s->openuser.in.domain_handle = &s->domain_handle; + s->openuser.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; + s->openuser.in.rid = s->lookup.out.rids.ids[0]; + s->openuser.out.user_handle = &s->user_handle; + + /* send request */ + openuser_req = dcerpc_samr_OpenUser_send(s->pipe, c, &s->openuser); + if (composite_nomem(openuser_req, c)) return; + + composite_continue_rpc(c, openuser_req, continue_userinfo_openuser, c); +} + + +/** + * Stage 2: Open user policy handle. + */ +static void continue_userinfo_openuser(struct rpc_request *req) +{ + struct composite_context *c; + struct userinfo_state *s; + struct rpc_request *queryuser_req; + struct monitor_msg msg; + struct msg_rpc_open_user *msg_open; + + c = talloc_get_type(req->async.private_data, struct composite_context); + s = talloc_get_type(c->private_data, struct userinfo_state); + + /* receive samr_OpenUser reply */ + c->status = dcerpc_ndr_request_recv(req); + if (!composite_is_ok(c)) return; + + if (!NT_STATUS_IS_OK(s->queryuserinfo.out.result)) { + composite_error(c, s->queryuserinfo.out.result); + return; + } + + /* issue a monitor message */ + if (s->monitor_fn) { + msg.type = mon_SamrOpenUser; + msg_open = talloc(s, struct msg_rpc_open_user); + msg_open->rid = s->openuser.in.rid; + msg_open->access_mask = s->openuser.in.access_mask; + msg.data = (void*)msg_open; + msg.data_size = sizeof(*msg_open); + + s->monitor_fn(&msg); + } + + /* prepare parameters for QueryUserInfo call */ + s->queryuserinfo.in.user_handle = &s->user_handle; + s->queryuserinfo.in.level = s->level; + + /* queue rpc call, set event handling and new state */ + queryuser_req = dcerpc_samr_QueryUserInfo_send(s->pipe, c, &s->queryuserinfo); + if (composite_nomem(queryuser_req, c)) return; + + composite_continue_rpc(c, queryuser_req, continue_userinfo_getuser, c); +} + + +/** + * Stage 3: Get requested user information. + */ +static void continue_userinfo_getuser(struct rpc_request *req) +{ + struct composite_context *c; + struct userinfo_state *s; + struct rpc_request *close_req; + struct monitor_msg msg; + struct msg_rpc_query_user *msg_query; + + c = talloc_get_type(req->async.private_data, struct composite_context); + s = talloc_get_type(c->private_data, struct userinfo_state); + + /* receive samr_QueryUserInfo reply */ + c->status = dcerpc_ndr_request_recv(req); + if (!composite_is_ok(c)) return; + + /* check if queryuser itself went ok */ + if (!NT_STATUS_IS_OK(s->queryuserinfo.out.result)) { + composite_error(c, s->queryuserinfo.out.result); + return; + } + + s->info = talloc_steal(s, s->queryuserinfo.out.info); + + /* issue a monitor message */ + if (s->monitor_fn) { + msg.type = mon_SamrQueryUser; + msg_query = talloc(s, struct msg_rpc_query_user); + msg_query->level = s->queryuserinfo.in.level; + msg.data = (void*)msg_query; + msg.data_size = sizeof(*msg_query); + + s->monitor_fn(&msg); + } + + /* prepare arguments for Close call */ + s->samrclose.in.handle = &s->user_handle; + s->samrclose.out.handle = &s->user_handle; + + /* queue rpc call, set event handling and new state */ + close_req = dcerpc_samr_Close_send(s->pipe, c, &s->samrclose); + if (composite_nomem(close_req, c)) return; + + composite_continue_rpc(c, close_req, continue_userinfo_closeuser, c); +} + + +/** + * Stage 4: Close policy handle associated with opened user. + */ +static void continue_userinfo_closeuser(struct rpc_request *req) +{ + struct composite_context *c; + struct userinfo_state *s; + struct monitor_msg msg; + struct msg_rpc_close_user *msg_close; + + c = talloc_get_type(req->async.private_data, struct composite_context); + s = talloc_get_type(c->private_data, struct userinfo_state); + + /* receive samr_Close reply */ + c->status = dcerpc_ndr_request_recv(req); + if (!composite_is_ok(c)) return; + + if (!NT_STATUS_IS_OK(s->samrclose.out.result)) { + composite_error(c, s->samrclose.out.result); + return; + } + + /* issue a monitor message */ + if (s->monitor_fn) { + msg.type = mon_SamrClose; + msg_close = talloc(s, struct msg_rpc_close_user); + msg_close->rid = s->openuser.in.rid; + msg.data = (void*)msg_close; + msg.data_size = sizeof(*msg_close); + + s->monitor_fn(&msg); + } + + composite_done(c); +} + + +/** + * Sends asynchronous userinfo request + * + * @param p dce/rpc call pipe + * @param io arguments and results of the call + */ +struct composite_context *libnet_rpc_userinfo_send(struct dcerpc_pipe *p, + struct libnet_rpc_userinfo *io, + void (*monitor)(struct monitor_msg*)) +{ + struct composite_context *c; + struct userinfo_state *s; + struct dom_sid *sid; + struct rpc_request *openuser_req, *lookup_req; + + if (!p || !io) return NULL; + + c = composite_create(p, dcerpc_event_context(p)); + if (c == NULL) return c; + + s = talloc_zero(c, struct userinfo_state); + if (composite_nomem(s, c)) return c; + + c->private_data = s; + + s->level = io->in.level; + s->pipe = p; + s->domain_handle = io->in.domain_handle; + s->monitor_fn = monitor; + + if (io->in.sid) { + sid = dom_sid_parse_talloc(s, io->in.sid); + if (composite_nomem(sid, c)) return c; + + s->openuser.in.domain_handle = &s->domain_handle; + s->openuser.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; + s->openuser.in.rid = sid->sub_auths[sid->num_auths - 1]; + s->openuser.out.user_handle = &s->user_handle; + + /* send request */ + openuser_req = dcerpc_samr_OpenUser_send(p, c, &s->openuser); + if (composite_nomem(openuser_req, c)) return c; + + composite_continue_rpc(c, openuser_req, continue_userinfo_openuser, c); + + } else { + /* preparing parameters to send rpc request */ + s->lookup.in.domain_handle = &s->domain_handle; + s->lookup.in.num_names = 1; + s->lookup.in.names = talloc_array(s, struct lsa_String, 1); + if (composite_nomem(s->lookup.in.names, c)) return c; + + s->lookup.in.names[0].string = talloc_strdup(s, io->in.username); + if (composite_nomem(s->lookup.in.names[0].string, c)) return c; + + /* send request */ + lookup_req = dcerpc_samr_LookupNames_send(p, c, &s->lookup); + if (composite_nomem(lookup_req, c)) return c; + + composite_continue_rpc(c, lookup_req, continue_userinfo_lookup, c); + } + + return c; +} + + +/** + * Waits for and receives result of asynchronous userinfo call + * + * @param c composite context returned by asynchronous userinfo call + * @param mem_ctx memory context of the call + * @param io pointer to results (and arguments) of the call + * @return nt status code of execution + */ + +NTSTATUS libnet_rpc_userinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx, + struct libnet_rpc_userinfo *io) +{ + NTSTATUS status; + struct userinfo_state *s; + + /* wait for results of sending request */ + status = composite_wait(c); + + if (NT_STATUS_IS_OK(status) && io) { + s = talloc_get_type(c->private_data, struct userinfo_state); + talloc_steal(mem_ctx, s->info); + io->out.info = *s->info; + } + + /* memory context associated to composite context is no longer needed */ + talloc_free(c); + return status; +} + + +/** + * Synchronous version of userinfo call + * + * @param pipe dce/rpc call pipe + * @param mem_ctx memory context for the call + * @param io arguments and results of the call + * @return nt status code of execution + */ + +NTSTATUS libnet_rpc_userinfo(struct dcerpc_pipe *p, + TALLOC_CTX *mem_ctx, + struct libnet_rpc_userinfo *io) +{ + struct composite_context *c = libnet_rpc_userinfo_send(p, io, NULL); + return libnet_rpc_userinfo_recv(c, mem_ctx, io); +} |