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/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Bartlett 2011
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 "librpc/gen_ndr/server_id.h"
bool server_id_equal(const struct server_id *p1, const struct server_id *p2)
{
if (p1->pid != p2->pid) {
return false;
}
if (p1->task_id != p2->task_id) {
return false;
}
if (p1->vnn != p2->vnn) {
return false;
}
if (p1->unique_id != p2->unique_id) {
return false;
}
return true;
}
char *server_id_str(TALLOC_CTX *mem_ctx, const struct server_id *id)
{
if (server_id_is_disconnected(id)) {
return talloc_strdup(mem_ctx, "disconnected");
} else if (id->vnn == NONCLUSTER_VNN && id->task_id == 0) {
return talloc_asprintf(mem_ctx,
"%llu",
(unsigned long long)id->pid);
} else if (id->vnn == NONCLUSTER_VNN) {
return talloc_asprintf(mem_ctx,
"%llu.%u",
(unsigned long long)id->pid,
(unsigned)id->task_id);
} else if (id->task_id == 0) {
return talloc_asprintf(mem_ctx,
"%u:%llu",
(unsigned)id->vnn,
(unsigned long long)id->pid);
} else {
return talloc_asprintf(mem_ctx,
"%u:%llu.%u",
(unsigned)id->vnn,
(unsigned long long)id->pid,
(unsigned)id->task_id);
}
}
struct server_id server_id_from_string(uint32_t local_vnn,
const char *pid_string)
{
struct server_id result;
unsigned long long pid;
unsigned int vnn, task_id = 0;
ZERO_STRUCT(result);
/*
* We accept various forms with 1, 2 or 3 component forms
* because the server_id_str() can print different forms, and
* we want backwards compatibility for scripts that may call
* smbclient.
*/
if (sscanf(pid_string, "%u:%llu.%u", &vnn, &pid, &task_id) == 3) {
result.vnn = vnn;
result.pid = pid;
result.task_id = task_id;
} else if (sscanf(pid_string, "%u:%llu", &vnn, &pid) == 2) {
result.vnn = vnn;
result.pid = pid;
} else if (sscanf(pid_string, "%llu.%u", &pid, &task_id) == 2) {
result.vnn = local_vnn;
result.pid = pid;
result.task_id = task_id;
} else if (sscanf(pid_string, "%llu", &pid) == 1) {
result.vnn = local_vnn;
result.pid = pid;
} else if (strcmp(pid_string, "disconnected") ==0) {
server_id_set_disconnected(&result);
} else {
result.vnn = NONCLUSTER_VNN;
result.pid = UINT64_MAX;
}
return result;
}
/**
* Set the serverid to the special value that represents a disconnected
* client for (e.g.) durable handles.
*/
void server_id_set_disconnected(struct server_id *id)
{
SMB_ASSERT(id != NULL);
id->pid = UINT64_MAX;
id->task_id = UINT32_MAX;
id->vnn = NONCLUSTER_VNN;
id->unique_id = SERVERID_UNIQUE_ID_NOT_TO_VERIFY;
return;
}
/**
* check whether a serverid is the special placeholder for
* a disconnected client
*/
bool server_id_is_disconnected(const struct server_id *id)
{
struct server_id dis;
SMB_ASSERT(id != NULL);
server_id_set_disconnected(&dis);
return server_id_equal(id, &dis);
}
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