lib/util/server_id.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Andrew Bartlett 2011
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "librpc/gen_ndr/server_id.h"
  22
  23 bool server_id_equal(const struct server_id *p1, const struct server_id *p2)
  24 {
  25         if (p1->pid != p2->pid) {
  26                 return false;
  27         }
  28
  29         if (p1->task_id != p2->task_id) {
  30                 return false;
  31         }
  32
  33         if (p1->vnn != p2->vnn) {
  34                 return false;
  35         }
  36
  37         if (p1->unique_id != p2->unique_id) {
  38                 return false;
  39         }
  40
  41         return true;
  42 }
  43
  44 char *server_id_str(TALLOC_CTX *mem_ctx, const struct server_id *id)
  45 {
  46         if (id->vnn == NONCLUSTER_VNN && id->task_id == 0) {
  47                 return talloc_asprintf(mem_ctx,
  48                                        "%llu",
  49                                        (unsigned long long)id->pid);
  50         } else if (id->vnn == NONCLUSTER_VNN) {
  51                 return talloc_asprintf(mem_ctx,
  52                                        "%llu.%u",
  53                                        (unsigned long long)id->pid,
  54                                        (unsigned)id->task_id);
  55         } else if (id->task_id == 0) {
  56                 return talloc_asprintf(mem_ctx,
  57                                        "%u:%llu",
  58                                        (unsigned)id->vnn,
  59                                        (unsigned long long)id->pid);
  60         } else {
  61                 return talloc_asprintf(mem_ctx,
  62                                        "%u:%llu.%u",
  63                                        (unsigned)id->vnn,
  64                                        (unsigned long long)id->pid,
  65                                        (unsigned)id->task_id);
  66         }
  67 }
  68
  69 struct server_id server_id_from_string(uint32_t local_vnn,
  70                                        const char *pid_string)
  71 {
  72         struct server_id result;
  73         unsigned long long pid;
  74         unsigned int vnn, task_id = 0;
  75
  76         ZERO_STRUCT(result);
  77
  78         /*
  79          * We accept various forms with 1, 2 or 3 component forms
  80          * because the server_id_str() can print different forms, and
  81          * we want backwards compatibility for scripts that may call
  82          * smbclient.
  83          */
  84         if (sscanf(pid_string, "%u:%llu.%u", &vnn, &pid, &task_id) == 3) {
  85                 result.vnn = vnn;
  86                 result.pid = pid;
  87                 result.task_id = task_id;
  88         } else if (sscanf(pid_string, "%u:%llu", &vnn, &pid) == 2) {
  89                 result.vnn = vnn;
  90                 result.pid = pid;
  91         } else if (sscanf(pid_string, "%llu.%u", &pid, &task_id) == 2) {
  92                 result.vnn = local_vnn;
  93                 result.pid = pid;
  94                 result.task_id = task_id;
  95         } else if (sscanf(pid_string, "%llu", &pid) == 1) {
  96                 result.vnn = local_vnn;
  97                 result.pid = pid;
  98         } else {
  99                 result.vnn = NONCLUSTER_VNN;
 100                 result.pid = UINT64_MAX;
 101         }
 102         return result;
 103 }