summaryrefslogtreecommitdiff
path: root/support/dktools/dk4hname8.c
blob: e02c8b96fff764effb38713cfa5d7fff83dc258a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4hname8.ctr
*/

/**	@file dk4hname8.c The dk4hname8 module.
*/


#line 67 "dk4hname8.ctr"

#include "dk4conf.h"
#include "dk4hname8.h"

#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define	WINDOWS_H_INCLUDED	1
#endif
#endif


#if DK4_HAVE_UNISTD_H
#ifndef UNISTD_H_INCLUDED
#include <unistd.h>
#define	UNISTD_H_INCLUDED 1
#endif
#endif

#if	DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif


int
dk4hostname_c8(char *buffer, size_t sz, dk4_er_t *erp)
{
#if DK4_ON_WINDOWS
  DWORD s;
#endif
  int back = 0;
#if	DK4_USE_ASSERT
  assert(NULL != buffer);
  assert(0 < sz);
#endif
  if ((NULL != buffer) && (0 < sz)) {
#if DK4_ON_WINDOWS
    if ((dk4_um_t)sz <= (dk4_um_t)0xFFFFFFFFUL) {
      s = (DWORD)sz;
      if (GetComputerNameExA(ComputerNameNetBIOS, buffer, &s)) {
        if ((size_t)s < sz) {
          buffer[(size_t)s] = '\0';
	  back = 1;
        } else {
          dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
        }
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_NOT_FOUND);
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
    }
#else
    if (0 == gethostname(buffer, sz)) {
      buffer[sz - 1] = '\0';
      back = 1;
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_NOT_FOUND);
    }
#endif
    if (0 != back) {
      /* Strip domain part (if any) */
      while('\0' != *buffer) {
        if ('.' == *buffer) {
	  *buffer = '\0';
	}
        buffer++;
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}