ReactOS  0.4.14-dev-98-gb0d4763
netname.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2009, Sun Microsystems, Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  * - Redistributions of source code must retain the above copyright notice,
8  * this list of conditions and the following disclaimer.
9  * - Redistributions in binary form must reproduce the above copyright notice,
10  * this list of conditions and the following disclaimer in the documentation
11  * and/or other materials provided with the distribution.
12  * - Neither the name of Sun Microsystems, Inc. nor the names of its
13  * contributors may be used to endorse or promote products derived
14  * from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26  * POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 /*
30  * netname utility routines
31  * convert from unix names to network names and vice-versa
32  * This module is operating system dependent!
33  * What we define here will work with any unix system that has adopted
34  * the sun NIS domain architecture.
35  */
36 
37 #include <wintirpc.h>
38 //#include <sys/param.h>
39 #include <rpc/rpc.h>
40 #include "rpc_com.h"
41 #ifdef YP
42 #include <rpcsvc/yp_prot.h>
43 #include <rpcsvc/ypclnt.h>
44 #endif
45 #include <ctype.h>
46 #include <limits.h>
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <string.h>
50 //#include <unistd.h>
51 
52 #ifndef MAXHOSTNAMELEN
53 #define MAXHOSTNAMELEN 256
54 #endif
55 #ifndef NGROUPS
56 #define NGROUPS 16
57 #endif
58 
59 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
60 
61 #define TYPE_SIGNED(type) (((type) -1) < 0)
62 
63 /*
64 ** 302 / 1000 is log10(2.0) rounded up.
65 ** Subtract one for the sign bit if the type is signed;
66 ** add one for integer division truncation;
67 ** add one more for a minus sign if the type is signed.
68 */
69 #define INT_STRLEN_MAXIMUM(type) \
70  ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
71 
72 static char *OPSYS = "unix";
73 
74 /*
75  * Figure out my fully qualified network name
76  */
77 int
79  char name[MAXNETNAMELEN+1];
80 {
81 #ifdef _WIN32
82  /* I don't understand what these underlying routines are accomplishing??? */
83  return 1;
84 #else
85  uid_t uid;
86 
87  uid = geteuid();
88  if (uid == 0) {
89  return (host2netname(name, (char *) NULL, (char *) NULL));
90  } else {
91  return (user2netname(name, uid, (char *) NULL));
92  }
93 #endif
94 }
95 
96 #ifndef _WIN32
97 /*
98  * Convert unix cred to network-name
99  */
100 int
101 user2netname(netname, uid, domain)
102  char netname[MAXNETNAMELEN + 1];
103  const uid_t uid;
104  const char *domain;
105 {
106  char *dfltdom;
107 
108  if (domain == NULL) {
109  if (__rpc_get_default_domain(&dfltdom) != 0) {
110  return (0);
111  }
112  domain = dfltdom;
113  }
114  if (strlen(domain) + 1 + INT_STRLEN_MAXIMUM(u_long) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
115  return (0);
116  }
117  (void) sprintf(netname, "%s.%ld@%s", OPSYS, (u_long)uid, domain);
118  return (1);
119 }
120 
121 
122 /*
123  * Convert host to network-name
124  */
125 int
126 host2netname(netname, host, domain)
127  char netname[MAXNETNAMELEN + 1];
128  const char *host;
129  const char *domain;
130 {
131  char *dfltdom;
132  char hostname[MAXHOSTNAMELEN+1];
133 
134  if (domain == NULL) {
135  if (__rpc_get_default_domain(&dfltdom) != 0) {
136  return (0);
137  }
138  domain = dfltdom;
139  }
140  if (host == NULL) {
141  (void) gethostname(hostname, sizeof(hostname));
142  host = hostname;
143  }
144  if (strlen(domain) + 1 + strlen(host) + 1 + strlen(OPSYS) > MAXNETNAMELEN) {
145  return (0);
146  }
147  (void) sprintf(netname, "%s.%s@%s", OPSYS, host, domain);
148  return (1);
149 }
150 #endif
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
unsigned long u_long
Definition: linux.h:269
ACPI_SIZE strlen(const char *String)
Definition: utclib.c:269
#define MAXHOSTNAMELEN
Definition: netname.c:53
int __rpc_get_default_domain(char **)
Definition: rpcdname.c:72
char * host
Definition: whois.c:55
long uid_t
Definition: various.h:8
char * hostname
Definition: ftp.c:88
#define sprintf(buf, format,...)
Definition: sprintf.c:55
INT WSAAPI gethostname(OUT char FAR *name, IN INT namelen)
Definition: getxbyxx.c:397
smooth NULL
Definition: ftsmooth.c:416
int getnetname(name)
Definition: netname.c:78
static char * OPSYS
Definition: netname.c:72
int user2netname(netname, const uid_t uid, const char *domain)
Definition: netname.c:101
#define INT_STRLEN_MAXIMUM(type)
Definition: netname.c:69
EXPORT uid_t geteuid()
Definition: uid.c:37
#define MAXNETNAMELEN
Definition: auth.h:78
Definition: name.c:36
int host2netname(netname, const char *host, const char *domain)
Definition: netname.c:126