/* Unix SMB/CIFS implementation. Copyright (C) Rafal Szczesniak 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 . */ /* a composite function for getting group 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/groupinfo.h" #include "librpc/gen_ndr/ndr_samr_c.h" struct groupinfo_state { struct dcerpc_pipe *pipe; struct policy_handle domain_handle; struct policy_handle group_handle; uint16_t level; struct samr_LookupNames lookup; struct samr_OpenGroup opengroup; struct samr_QueryGroupInfo querygroupinfo; struct samr_Close samrclose; union samr_GroupInfo *info; /* information about the progress */ void (*monitor_fn)(struct monitor_msg *); }; static void continue_groupinfo_lookup(struct rpc_request *req); static void continue_groupinfo_opengroup(struct rpc_request *req); static void continue_groupinfo_getgroup(struct rpc_request *req); static void continue_groupinfo_closegroup(struct rpc_request *req); /** * Stage 1 (optional): Look for a group name in SAM server. */ static void continue_groupinfo_lookup(struct rpc_request *req) { struct composite_context *c; struct groupinfo_state *s; struct rpc_request *opengroup_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 groupinfo_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->opengroup.in.domain_handle = &s->domain_handle; s->opengroup.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; s->opengroup.in.rid = s->lookup.out.rids.ids[0]; s->opengroup.out.group_handle = &s->group_handle; /* send request */ opengroup_req = dcerpc_samr_OpenGroup_send(s->pipe, c, &s->opengroup); if (composite_nomem(opengroup_req, c)) return; composite_continue_rpc(c, opengroup_req, continue_groupinfo_opengroup, c); } /** * Stage 2: Open group policy handle. */ static void continue_groupinfo_opengroup(struct rpc_request *req) { struct composite_context *c; struct groupinfo_state *s; struct rpc_request *querygroup_req; struct monitor_msg msg; struct msg_rpc_open_group *msg_open; c = talloc_get_type(req->async.private_data, struct composite_context); s = talloc_get_type(c->private_data, struct groupinfo_state); /* receive samr_OpenGroup reply */ c->status = dcerpc_ndr_request_recv(req); if (!composite_is_ok(c)) return; if (!NT_STATUS_IS_OK(s->querygroupinfo.out.result)) { composite_error(c, s->querygroupinfo.out.result); return; } /* issue a monitor message */ if (s->monitor_fn) { msg.type = mon_SamrOpenGroup; msg_open = talloc(s, struct msg_rpc_open_group); msg_open->rid = s->opengroup.in.rid; msg_open->access_mask = s->opengroup.in.access_mask; msg.data = (void*)msg_open; msg.data_size = sizeof(*msg_open); s->monitor_fn(&msg); } /* prepare parameters for QueryGroupInfo call */ s->querygroupinfo.in.group_handle = &s->group_handle; s->querygroupinfo.in.level = s->level; /* queue rpc call, set event handling and new state */ querygroup_req = dcerpc_samr_QueryGroupInfo_send(s->pipe, c, &s->querygroupinfo); if (composite_nomem(querygroup_req, c)) return; composite_continue_rpc(c, querygroup_req, continue_groupinfo_getgroup, c); } /** * Stage 3: Get requested group information. */ static void continue_groupinfo_getgroup(struct rpc_request *req) { struct composite_context *c; struct groupinfo_state *s; struct rpc_request *close_req; struct monitor_msg msg; struct msg_rpc_query_group *msg_query; c = talloc_get_type(req->async.private_data, struct composite_context); s = talloc_get_type(c->private_data, struct groupinfo_state); /* receive samr_QueryGroupInfo reply */ c->status = dcerpc_ndr_request_recv(req); if (!composite_is_ok(c)) return; /* check if querygroup itself went ok */ if (!NT_STATUS_IS_OK(s->querygroupinfo.out.result)) { composite_error(c, s->querygroupinfo.out.result); return; } s->info = talloc_steal(s, s->querygroupinfo.out.info); /* issue a monitor message */ if (s->monitor_fn) { msg.type = mon_SamrQueryGroup; msg_query = talloc(s, struct msg_rpc_query_group); msg_query->level = s->querygroupinfo.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->group_handle; s->samrclose.out.handle = &s->group_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_groupinfo_closegroup, c); } /** * Stage 4: Close policy handle associated with opened group. */ static void continue_groupinfo_closegroup(struct rpc_request *req) { struct composite_context *c; struct groupinfo_state *s; struct monitor_msg msg; struct msg_rpc_close_group *msg_close; c = talloc_get_type(req->async.private_data, struct composite_context); s = talloc_get_type(c->private_data, struct groupinfo_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_group); msg_close->rid = s->opengroup.in.rid; msg.data = (void*)msg_close; msg.data_size = sizeof(*msg_close); s->monitor_fn(&msg); } composite_done(c); } /** * Sends asynchronous groupinfo request * * @param p dce/rpc call pipe * @param io arguments and results of the call */ struct composite_context *libnet_rpc_groupinfo_send(struct dcerpc_pipe *p, struct libnet_rpc_groupinfo *io, void (*monitor)(struct monitor_msg*)) { struct composite_context *c; struct groupinfo_state *s; struct dom_sid *sid; struct rpc_request *opengroup_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 groupinfo_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->opengroup.in.domain_handle = &s->domain_handle; s->opengroup.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; s->opengroup.in.rid = sid->sub_auths[sid->num_auths - 1]; s->opengroup.out.group_handle = &s->group_handle; /* send request */ opengroup_req = dcerpc_samr_OpenGroup_send(p, c, &s->opengroup); if (composite_nomem(opengroup_req, c)) return c; composite_continue_rpc(c, opengroup_req, continue_groupinfo_opengroup, 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.groupname); 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_groupinfo_lookup, c); } return c; } /** * Waits for and receives result of asynchronous groupinfo call * * @param c composite context returned by asynchronous groupinfo 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_groupinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx, struct libnet_rpc_groupinfo *io) { NTSTATUS status; struct groupinfo_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 groupinfo_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 groupinfo 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_groupinfo(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx, struct libnet_rpc_groupinfo *io) { struct composite_context *c = libnet_rpc_groupinfo_send(p, io, NULL); return libnet_rpc_groupinfo_recv(c, mem_ctx, io); }
