ReactOS  0.4.12-dev-43-g63b00d8
finger.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 1989, 1993
3  * The Regents of the University of California. All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  * must display the following acknowledgement:
18  * This product includes software developed by the University of
19  * California, Berkeley and its contributors.
20  * 4. Neither the name of the University nor the names of its contributors
21  * may be used to endorse or promote products derived from this software
22  * without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  * 8/2/97 - Ted Felix <tfelix@fred.net>
37  * Ported to Win32 from 4.4BSD-LITE2 at wcarchive.
38  * NT Workstation already has finger, and it runs fine under
39  * Win95. Thought I'd do this anyways since not everyone has
40  * access to NT.
41  * Had to remove local handling. Otherwise, same as whois.
42  */
43 
44 /*
45  * Finger prints out information about users. It is not portable since
46  * certain fields (e.g. the full user name, office, and phone numbers) are
47  * extracted from the gecos field of the passwd file which other UNIXes
48  * may not have or may use for other things.
49  *
50  * There are currently two output formats; the short format is one line
51  * per user and displays login name, tty, login time, real name, idle time,
52  * and office location/phone number. The long format gives the same
53  * information (in a more legible format) as well as home directory, shell,
54  * mail info, and .plan/.project files.
55  */
56 
57 #include "precomp.h"
58 
59 #include <time.h>
60 
61 #include "getopt.h"
62 
63 char *__progname;
64 
67 
68 static void userlist(int, char **);
69 void usage();
70 
71 int
72 main(int argc, char **argv)
73 {
74  int ch;
75 
76  while ((ch = getopt(argc, argv, "lmps")) != EOF)
77  switch(ch) {
78  case 'l':
79  lflag = 1; /* long format */
80  break;
81  case 'm':
82  mflag = 1; /* force exact match of names */
83  break;
84  case 'p':
85  pplan = 1; /* don't show .plan/.project */
86  break;
87  case 's':
88  sflag = 1; /* short format */
89  break;
90  case '?':
91  default:
93  "usage: finger [-lmps] login [...]\n");
94  exit(1);
95  }
96  argc -= optind;
97  argv += optind;
98 
99  (void)time(&now);
100  if (!*argv) {
101  usage();
102  } else {
103  userlist(argc, argv);
104  /*
105  * Assign explicit "large" format if names given and -s not
106  * explicitly stated. Force the -l AFTER we get names so any
107  * remote finger attempts specified won't be mishandled.
108  */
109  if (!sflag)
110  lflag = 1; /* if -s not explicit, force -l */
111  }
112  return 0;
113 }
114 
115 
116 static void
117 userlist(int argc, char **argv)
118 {
119  int *used = NULL;
120  char **ap, **nargv, **np, **p;
121  WORD wVersionRequested;
122  WSADATA wsaData;
123  int iErr;
124 
125 
126  if ((nargv = (char**) malloc((argc+1) * sizeof(char *))) == NULL ||
127  (used = (int*) calloc(argc, sizeof(int))) == NULL)
128  err(1, NULL);
129 
130  /* Pull out all network requests into nargv. */
131  for (ap = p = argv, np = nargv; *p; ++p)
132  if (index(*p, '@'))
133  *np++ = *p;
134  else
135  *ap++ = *p;
136 
137  *np++ = NULL;
138  *ap++ = NULL;
139 
140  /* If there are local requests */
141  if (*argv)
142  {
143  fprintf(stderr, "Warning: Can't do local finger\n");
144  }
145 
146  /* Start winsock */
147  wVersionRequested = MAKEWORD( 1, 1 );
148  iErr = WSAStartup( wVersionRequested, &wsaData );
149  if ( iErr != 0 )
150  {
151  /* Tell the user that we couldn't find a usable */
152  /* WinSock DLL. */
153  fprintf(stderr, "WSAStartup failed\n");
154  free(nargv);
155  free(used);
156  return;
157  }
158 
159  /* Handle network requests. */
160  for (p = nargv; *p;)
161  netfinger(*p++);
162 
163  /* Bring down winsock */
164  WSACleanup();
165  free(nargv);
166  free(used);
167  exit(0);
168 }
169 
170 void usage()
171 {
173  "usage: finger [-lmps] login [...]\n");
174  exit(1);
175 }
176 
static int argc
Definition: ServiceArgs.c:12
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:47
#define MAKEWORD(a, b)
Definition: typedefs.h:247
int optind
Definition: getopt.c:47
#define free
Definition: debug_ros.c:5
INT WSAAPI WSACleanup(VOID)
Definition: startup.c:60
__u16 time
Definition: mkdosfs.c:366
int mflag
Definition: finger.c:66
static char ** argv
Definition: ServiceArgs.c:11
void netfinger(char *name)
Definition: net.c:40
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
time_t now
Definition: finger.c:65
INT WINAPI WSAStartup(IN WORD wVersionRequested, OUT LPWSADATA lpWSAData)
Definition: startup.c:113
smooth NULL
Definition: ftsmooth.c:416
static void userlist(int, char **)
Definition: finger.c:117
int pplan
Definition: finger.c:66
int sflag
Definition: finger.c:66
c used
Definition: write.c:2876
int lflag
Definition: finger.c:66
int main(int argc, char **argv)
Definition: finger.c:72
unsigned short WORD
Definition: ntddk_ex.h:93
int getopt(int nargc, char *const *nargv, const char *ostr)
Definition: getopt.c:55
#define index(s, c)
Definition: various.h:29
#define err(...)
__kernel_time_t time_t
Definition: linux.h:252
#define EOF
Definition: stdio.h:24
#define calloc
Definition: rosglue.h:14
void int int ULONGLONG int va_list * ap
Definition: winesup.h:32
void usage()
Definition: finger.c:170
FILE * stderr
#define malloc
Definition: debug_ros.c:4
void exit(int exitcode)
Definition: _exit.c:33
GLfloat GLfloat p
Definition: glext.h:8902
char * __progname
Definition: finger.c:63