lprint.c revision 331722 
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 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#if 0
34#ifndef lint
35static char sccsid[] = "@(#)lprint.c	8.3 (Berkeley) 4/28/95";
36#endif
37#endif
38
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD: stable/11/usr.bin/finger/lprint.c 331722 2018-03-29 02:50:57Z eadler $");
41
42#include <sys/types.h>
43#include <sys/socket.h>
44#include <sys/stat.h>
45#include <sys/time.h>
46#include <ctype.h>
47#include <db.h>
48#include <err.h>
49#include <fcntl.h>
50#include <langinfo.h>
51#include <paths.h>
52#include <pwd.h>
53#include <stdio.h>
54#include <string.h>
55#include <unistd.h>
56#include <utmpx.h>
57#include "finger.h"
58#include "pathnames.h"
59
60#define	LINE_LEN	80
61#define	TAB_LEN		8		/* 8 spaces between tabs */
62
63static int	demi_print(char *, int);
64static void	lprint(PERSON *);
65static void     vputc(unsigned char);
66
67void
68lflag_print(void)
69{
70	PERSON *pn;
71	int sflag, r;
72	PERSON *tmp;
73	DBT data, key;
74
75	for (sflag = R_FIRST;; sflag = R_NEXT) {
76		r = (*db->seq)(db, &key, &data, sflag);
77		if (r == -1)
78			err(1, "db seq");
79		if (r == 1)
80			break;
81		memmove(&tmp, data.data, sizeof tmp);
82		pn = tmp;
83		if (sflag != R_FIRST)
84			putchar('\n');
85		lprint(pn);
86		if (!pplan) {
87			(void)show_text(pn->dir,
88			    _PATH_FORWARD, "Mail forwarded to");
89			(void)show_text(pn->dir, _PATH_PROJECT, "Project");
90			if (!show_text(pn->dir, _PATH_PLAN, "Plan"))
91				(void)printf("No Plan.\n");
92			(void)show_text(pn->dir,
93			    _PATH_PUBKEY, "Public key");
94		}
95	}
96}
97
98static void
99lprint(PERSON *pn)
100{
101	struct tm *delta;
102	WHERE *w;
103	int cpr, len, maxlen;
104	struct tm *tp;
105	int oddfield;
106	char t[80];
107
108	if (d_first < 0)
109		d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
110	/*
111	 * long format --
112	 *	login name
113	 *	real name
114	 *	home directory
115	 *	shell
116	 *	office, office phone, home phone if available
117	 *	mail status
118	 */
119	(void)printf("Login: %-15s\t\t\tName: %s\nDirectory: %-25s",
120	    pn->name, pn->realname, pn->dir);
121	(void)printf("\tShell: %-s\n", *pn->shell ? pn->shell : _PATH_BSHELL);
122
123	if (gflag)
124		goto no_gecos;
125	/*
126	 * try and print office, office phone, and home phone on one line;
127	 * if that fails, do line filling so it looks nice.
128	 */
129#define	OFFICE_TAG		"Office"
130#define	OFFICE_PHONE_TAG	"Office Phone"
131	oddfield = 0;
132	if (pn->office && pn->officephone &&
133	    strlen(pn->office) + strlen(pn->officephone) +
134	    sizeof(OFFICE_TAG) + 2 <= 5 * TAB_LEN) {
135		(void)snprintf(tbuf, sizeof(tbuf), "%s: %s, %s",
136		    OFFICE_TAG, pn->office, prphone(pn->officephone));
137		oddfield = demi_print(tbuf, oddfield);
138	} else {
139		if (pn->office) {
140			(void)snprintf(tbuf, sizeof(tbuf), "%s: %s",
141			    OFFICE_TAG, pn->office);
142			oddfield = demi_print(tbuf, oddfield);
143		}
144		if (pn->officephone) {
145			(void)snprintf(tbuf, sizeof(tbuf), "%s: %s",
146			    OFFICE_PHONE_TAG, prphone(pn->officephone));
147			oddfield = demi_print(tbuf, oddfield);
148		}
149	}
150	if (pn->homephone) {
151		(void)snprintf(tbuf, sizeof(tbuf), "%s: %s", "Home Phone",
152		    prphone(pn->homephone));
153		oddfield = demi_print(tbuf, oddfield);
154	}
155	if (oddfield)
156		putchar('\n');
157
158no_gecos:
159	/*
160	 * long format con't:
161	 * if logged in
162	 *	terminal
163	 *	idle time
164	 *	if messages allowed
165	 *	where logged in from
166	 * if not logged in
167	 *	when last logged in
168	 */
169	/* find out longest device name for this user for formatting */
170	for (w = pn->whead, maxlen = -1; w != NULL; w = w->next)
171		if ((len = strlen(w->tty)) > maxlen)
172			maxlen = len;
173	/* find rest of entries for user */
174	for (w = pn->whead; w != NULL; w = w->next) {
175		if (w->info == LOGGEDIN) {
176			tp = localtime(&w->loginat);
177			strftime(t, sizeof(t),
178			    d_first ? "%a %e %b %R (%Z)" : "%a %b %e %R (%Z)",
179			    tp);
180			cpr = printf("On since %s on %s", t, w->tty);
181			/*
182			 * idle time is tough; if have one, print a comma,
183			 * then spaces to pad out the device name, then the
184			 * idle time.  Follow with a comma if a remote login.
185			 */
186			delta = gmtime(&w->idletime);
187			if (w->idletime != -1 && (delta->tm_yday ||
188			    delta->tm_hour || delta->tm_min)) {
189				cpr += printf("%-*s idle ",
190				    maxlen - (int)strlen(w->tty) + 1, ",");
191				if (delta->tm_yday > 0) {
192					cpr += printf("%d day%s ",
193					   delta->tm_yday,
194					   delta->tm_yday == 1 ? "" : "s");
195				}
196				cpr += printf("%d:%02d",
197				    delta->tm_hour, delta->tm_min);
198				if (*w->host) {
199					putchar(',');
200					++cpr;
201				}
202			}
203			if (!w->writable)
204				cpr += printf(" (messages off)");
205		} else if (w->loginat == 0) {
206			cpr = printf("Never logged in.");
207		} else {
208			tp = localtime(&w->loginat);
209			if (now - w->loginat > 86400 * 365 / 2) {
210				strftime(t, sizeof(t),
211					 d_first ? "%a %e %b %R %Y (%Z)" :
212						   "%a %b %e %R %Y (%Z)",
213					 tp);
214			} else {
215				strftime(t, sizeof(t),
216					 d_first ? "%a %e %b %R (%Z)" :
217						   "%a %b %e %R (%Z)",
218					 tp);
219			}
220			cpr = printf("Last login %s on %s", t, w->tty);
221		}
222		if (*w->host) {
223			if (LINE_LEN < (cpr + 6 + strlen(w->host)))
224				(void)printf("\n   ");
225			(void)printf(" from %s", w->host);
226		}
227		putchar('\n');
228	}
229	if (pn->mailrecv == -1)
230		printf("No Mail.\n");
231	else if (pn->mailrecv > pn->mailread) {
232		tp = localtime(&pn->mailrecv);
233		strftime(t, sizeof(t),
234			 d_first ? "%a %e %b %R %Y (%Z)" :
235				   "%a %b %e %R %Y (%Z)",
236			 tp);
237		printf("New mail received %s\n", t);
238		tp = localtime(&pn->mailread);
239		strftime(t, sizeof(t),
240			 d_first ? "%a %e %b %R %Y (%Z)" :
241				   "%a %b %e %R %Y (%Z)",
242			 tp);
243		printf("     Unread since %s\n", t);
244	} else {
245		tp = localtime(&pn->mailread);
246		strftime(t, sizeof(t),
247			 d_first ? "%a %e %b %R %Y (%Z)" :
248				   "%a %b %e %R %Y (%Z)",
249			 tp);
250		printf("Mail last read %s\n", t);
251	}
252}
253
254static int
255demi_print(char *str, int oddfield)
256{
257	static int lenlast;
258	int lenthis, maxlen;
259
260	lenthis = strlen(str);
261	if (oddfield) {
262		/*
263		 * We left off on an odd number of fields.  If we haven't
264		 * crossed the midpoint of the screen, and we have room for
265		 * the next field, print it on the same line; otherwise,
266		 * print it on a new line.
267		 *
268		 * Note: we insist on having the right hand fields start
269		 * no less than 5 tabs out.
270		 */
271		maxlen = 5 * TAB_LEN;
272		if (maxlen < lenlast)
273			maxlen = lenlast;
274		if (((((maxlen / TAB_LEN) + 1) * TAB_LEN) +
275		    lenthis) <= LINE_LEN) {
276			while(lenlast < (4 * TAB_LEN)) {
277				putchar('\t');
278				lenlast += TAB_LEN;
279			}
280			(void)printf("\t%s\n", str);	/* force one tab */
281		} else {
282			(void)printf("\n%s", str);	/* go to next line */
283			oddfield = !oddfield;	/* this'll be undone below */
284		}
285	} else
286		(void)printf("%s", str);
287	oddfield = !oddfield;			/* toggle odd/even marker */
288	lenlast = lenthis;
289	return(oddfield);
290}
291
292int
293show_text(const char *directory, const char *file_name, const char *header)
294{
295	struct stat sb;
296	FILE *fp;
297	int ch, cnt;
298	char *p, lastc;
299	int fd, nr;
300
301	lastc = '\0';
302
303	(void)snprintf(tbuf, sizeof(tbuf), "%s/%s", directory, file_name);
304	if ((fd = open(tbuf, O_RDONLY)) < 0 || fstat(fd, &sb) ||
305	    sb.st_size == 0)
306		return(0);
307
308	/* If short enough, and no newlines, show it on a single line.*/
309	if (sb.st_size <= (off_t)(LINE_LEN - strlen(header) - 5)) {
310		nr = read(fd, tbuf, sizeof(tbuf));
311		if (nr <= 0) {
312			(void)close(fd);
313			return(0);
314		}
315		for (p = tbuf, cnt = nr; cnt--; ++p)
316			if (*p == '\n')
317				break;
318		if (cnt <= 1) {
319			if (*header != '\0')
320				(void)printf("%s: ", header);
321			for (p = tbuf, cnt = nr; cnt--; ++p)
322				if (*p != '\r')
323					vputc(lastc = *p);
324			if (lastc != '\n')
325				(void)putchar('\n');
326			(void)close(fd);
327			return(1);
328		}
329		else
330			(void)lseek(fd, 0L, SEEK_SET);
331	}
332	if ((fp = fdopen(fd, "r")) == NULL)
333		return(0);
334	if (*header != '\0')
335		(void)printf("%s:\n", header);
336	while ((ch = getc(fp)) != EOF)
337		if (ch != '\r')
338			vputc(lastc = ch);
339	if (lastc != '\n')
340		(void)putchar('\n');
341	(void)fclose(fp);
342	return(1);
343}
344
345static void
346vputc(unsigned char ch)
347{
348	int meta;
349
350	if (!isprint(ch) && !isascii(ch)) {
351		(void)putchar('M');
352		(void)putchar('-');
353		ch = toascii(ch);
354		meta = 1;
355	} else
356		meta = 0;
357	if (isprint(ch) || (!meta && (ch == ' ' || ch == '\t' || ch == '\n')))
358		(void)putchar(ch);
359	else {
360		(void)putchar('^');
361		(void)putchar(ch == '\177' ? '?' : ch | 0100);
362	}
363}
364