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Unix SMB/CIFS implementation.
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Copyright (C) Rafal Szczesniak 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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a composite function for name resolving
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#include "lib/events/events.h"
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#include "libnet/libnet.h"
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#include "libcli/composite/composite.h"
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#include "auth/credentials/credentials.h"
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#include "lib/messaging/messaging.h"
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#include "lib/messaging/irpc.h"
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#include "libcli/resolve/resolve.h"
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#include "libcli/finddcs.h"
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#include "libcli/security/security.h"
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#include "librpc/gen_ndr/lsa.h"
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#include "librpc/gen_ndr/ndr_lsa_c.h"
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#include "param/param.h"
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struct nbt_name hostname;
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static void continue_name_resolved(struct composite_context *ctx);
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* Sends asynchronous Lookup request
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* @param io arguments and result of the call
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struct composite_context *libnet_Lookup_send(struct libnet_context *ctx,
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struct libnet_Lookup *io)
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struct composite_context *c;
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struct lookup_state *s;
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struct composite_context *cresolve_req;
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struct resolve_context *resolve_ctx;
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/* allocate context and state structures */
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c = composite_create(ctx, ctx->event_ctx);
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if (c == NULL) return NULL;
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s = talloc_zero(c, struct lookup_state);
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if (composite_nomem(s, c)) return c;
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if (io == NULL || io->in.hostname == NULL) {
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composite_error(c, NT_STATUS_INVALID_PARAMETER);
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s->hostname.name = talloc_strdup(s, io->in.hostname);
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if (composite_nomem(s->hostname.name, c)) return c;
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s->hostname.type = io->in.type;
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s->hostname.scope = NULL;
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/* name resolution methods */
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if (io->in.resolve_ctx) {
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resolve_ctx = io->in.resolve_ctx;
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resolve_ctx = ctx->resolve_ctx;
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/* send resolve request */
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cresolve_req = resolve_name_send(resolve_ctx, &s->hostname, c->event_ctx);
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if (composite_nomem(cresolve_req, c)) return c;
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composite_continue(c, cresolve_req, continue_name_resolved, c);
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static void continue_name_resolved(struct composite_context *ctx)
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struct composite_context *c;
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struct lookup_state *s;
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c = talloc_get_type(ctx->async.private_data, struct composite_context);
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s = talloc_get_type(c->private_data, struct lookup_state);
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c->status = resolve_name_recv(ctx, s, &s->address);
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* Waits for and receives results of asynchronous Lookup call
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* @param c composite context returned by asynchronous Lookup call
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* @param mem_ctx memory context of the call
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* @param io pointer to results (and arguments) of the call
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* @return nt status code of execution
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NTSTATUS libnet_Lookup_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
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struct libnet_Lookup *io)
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struct lookup_state *s;
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status = composite_wait(c);
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if (NT_STATUS_IS_OK(status)) {
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s = talloc_get_type(c->private_data, struct lookup_state);
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io->out.address = (const char **)str_list_make(mem_ctx, s->address, NULL);
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NT_STATUS_HAVE_NO_MEMORY(io->out.address);
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* Synchronous version of Lookup call
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* @param mem_ctx memory context for the call
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* @param io arguments and results of the call
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* @return nt status code of execution
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NTSTATUS libnet_Lookup(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
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struct libnet_Lookup *io)
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struct composite_context *c = libnet_Lookup_send(ctx, io);
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return libnet_Lookup_recv(c, mem_ctx, io);
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* Shortcut functions to find common types of name
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* (and skip nbt name type argument)
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* Sends asynchronous LookupHost request
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struct composite_context* libnet_LookupHost_send(struct libnet_context *ctx,
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struct libnet_Lookup *io)
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io->in.type = NBT_NAME_SERVER;
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return libnet_Lookup_send(ctx, io);
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* Synchronous version of LookupHost call
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NTSTATUS libnet_LookupHost(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
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struct libnet_Lookup *io)
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struct composite_context *c = libnet_LookupHost_send(ctx, io);
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return libnet_Lookup_recv(c, mem_ctx, io);
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* Sends asynchronous LookupDCs request
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struct composite_context* libnet_LookupDCs_send(struct libnet_context *ctx,
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struct libnet_LookupDCs *io)
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struct composite_context *c;
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struct messaging_context *msg_ctx =
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messaging_client_init(mem_ctx, lp_messaging_path(mem_ctx, ctx->lp_ctx),
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lp_iconv_convenience(ctx->lp_ctx), ctx->event_ctx);
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c = finddcs_send(mem_ctx, lp_netbios_name(ctx->lp_ctx), lp_nbt_port(ctx->lp_ctx),
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io->in.domain_name, io->in.name_type,
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NULL, lp_iconv_convenience(ctx->lp_ctx),
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ctx->resolve_ctx, ctx->event_ctx, msg_ctx);
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* Waits for and receives results of asynchronous Lookup call
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* @param c composite context returned by asynchronous Lookup call
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* @param mem_ctx memory context of the call
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* @param io pointer to results (and arguments) of the call
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* @return nt status code of execution
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NTSTATUS libnet_LookupDCs_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
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struct libnet_LookupDCs *io)
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status = finddcs_recv(c, mem_ctx, &io->out.num_dcs, &io->out.dcs);
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if (!NT_STATUS_IS_OK(status)) {
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* Synchronous version of LookupDCs
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NTSTATUS libnet_LookupDCs(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
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struct libnet_LookupDCs *io)
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struct composite_context *c = libnet_LookupDCs_send(ctx, mem_ctx, io);
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return libnet_LookupDCs_recv(c, mem_ctx, io);
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struct lookup_name_state {
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struct libnet_context *ctx;
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struct libnet_DomainOpen domopen;
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struct lsa_LookupNames lookup;
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struct lsa_TransSidArray sids;
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struct lsa_String *names;
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/* information about the progress */
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void (*monitor_fn)(struct monitor_msg *);
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static bool prepare_lookup_params(struct libnet_context *ctx,
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struct composite_context *c,
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struct lookup_name_state *s);
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static void continue_lookup_name(struct composite_context *ctx);
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static void continue_name_found(struct rpc_request *req);
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struct composite_context* libnet_LookupName_send(struct libnet_context *ctx,
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struct libnet_LookupName *io,
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void (*monitor)(struct monitor_msg*))
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struct composite_context *c;
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struct lookup_name_state *s;
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struct rpc_request *lookup_req;
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bool prereq_met = false;
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c = composite_create(mem_ctx, ctx->event_ctx);
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if (c == NULL) return NULL;
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s = talloc_zero(c, struct lookup_name_state);
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if (composite_nomem(s, c)) return c;
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s->name = talloc_strdup(c, io->in.name);
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s->monitor_fn = monitor;
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prereq_met = lsa_domain_opened(ctx, io->in.domain_name, &c, &s->domopen,
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continue_lookup_name, monitor);
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if (!prereq_met) return c;
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if (!prepare_lookup_params(ctx, c, s)) return c;
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lookup_req = dcerpc_lsa_LookupNames_send(ctx->lsa.pipe, c, &s->lookup);
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if (composite_nomem(lookup_req, c)) return c;
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composite_continue_rpc(c, lookup_req, continue_name_found, c);
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static bool prepare_lookup_params(struct libnet_context *ctx,
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struct composite_context *c,
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struct lookup_name_state *s)
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const int single_name = 1;
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s->names = talloc_array(ctx, struct lsa_String, single_name);
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if (composite_nomem(s->names, c)) return false;
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s->names[0].string = s->name;
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s->lookup.in.handle = &ctx->lsa.handle;
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s->lookup.in.num_names = single_name;
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s->lookup.in.names = s->names;
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s->lookup.in.sids = &s->sids;
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s->lookup.in.level = 1;
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s->lookup.in.count = &s->count;
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s->lookup.out.count = &s->count;
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s->lookup.out.sids = &s->sids;
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s->lookup.out.domains = talloc_zero(ctx, struct lsa_RefDomainList *);
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if (composite_nomem(s->lookup.out.domains, c)) return false;
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static void continue_lookup_name(struct composite_context *ctx)
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struct composite_context *c;
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struct lookup_name_state *s;
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struct rpc_request *lookup_req;
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c = talloc_get_type(ctx->async.private_data, struct composite_context);
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s = talloc_get_type(c->private_data, struct lookup_name_state);
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c->status = libnet_DomainOpen_recv(ctx, s->ctx, c, &s->domopen);
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if (!composite_is_ok(c)) return;
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if (!prepare_lookup_params(s->ctx, c, s)) return;
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lookup_req = dcerpc_lsa_LookupNames_send(s->ctx->lsa.pipe, c, &s->lookup);
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if (composite_nomem(lookup_req, c)) return;
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composite_continue_rpc(c, lookup_req, continue_name_found, c);
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static void continue_name_found(struct rpc_request *req)
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struct composite_context *c;
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struct lookup_name_state *s;
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c = talloc_get_type(req->async.private_data, struct composite_context);
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s = talloc_get_type(c->private_data, struct lookup_name_state);
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c->status = dcerpc_ndr_request_recv(req);
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if (!composite_is_ok(c)) return;
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c->status = s->lookup.out.result;
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if (!composite_is_ok(c)) return;
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NTSTATUS libnet_LookupName_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
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struct libnet_LookupName *io)
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struct lookup_name_state *s;
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status = composite_wait(c);
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if (NT_STATUS_IS_OK(status)) {
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s = talloc_get_type(c->private_data, struct lookup_name_state);
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io->out.sidstr = NULL;
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if (*s->lookup.out.count > 0) {
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struct lsa_RefDomainList *domains = *s->lookup.out.domains;
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struct lsa_TransSidArray *sids = s->lookup.out.sids;
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if (domains == NULL || sids == NULL) {
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status = NT_STATUS_UNSUCCESSFUL;
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io->out.error_string = talloc_asprintf(mem_ctx, "Error: %s", nt_errstr(status));
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if (sids->count > 0) {
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io->out.rid = sids->sids[0].rid;
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io->out.sid_type = sids->sids[0].sid_type;
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if (domains->count > 0) {
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io->out.sid = dom_sid_add_rid(mem_ctx, domains->domains[0].sid, io->out.rid);
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NT_STATUS_HAVE_NO_MEMORY(io->out.sid);
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io->out.sidstr = dom_sid_string(mem_ctx, io->out.sid);
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NT_STATUS_HAVE_NO_MEMORY(io->out.sidstr);
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io->out.error_string = talloc_strdup(mem_ctx, "Success");
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} else if (!NT_STATUS_IS_OK(status)) {
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io->out.error_string = talloc_asprintf(mem_ctx, "Error: %s", nt_errstr(status));
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NTSTATUS libnet_LookupName(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
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struct libnet_LookupName *io)
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struct composite_context *c;
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c = libnet_LookupName_send(ctx, mem_ctx, io, NULL);
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return libnet_LookupName_recv(c, mem_ctx, io);