Allow finger.conf to contain aliases for files that will be displayed

when fingered.

Submitted by: Mark Knight <markk@knigma.org>

usr.bin/finger/extern.h

@@ -31,6 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)extern.h	8.2 (Berkeley) 4/28/95
+ * $FreeBSD$
  */
 
 extern char tbuf[1024];			/* Temp buffer for anybody. */
@@ -48,3 +49,4 @@ void	 netfinger __P((char *));
 PERSON	*palloc __P((void));
 char	*prphone __P((char *));
 void	 sflag_print __P((void));
+int	 show_text __P((char *, char *, char *));

usr.bin/finger/finger.1

@@ -190,13 +190,11 @@ behaves as if the user in question does not exist.
 The optional
 .Xr finger.conf 5
 configuration file can be used to specify aliases.
-This is particularly useful where a user's login name is not their
-preferred mail address.
 Since
 .Xr finger 1
 is invoked by
 .Xr fingerd 8
-these aliases will work for both local and network queries.
+aliases will work for both local and network queries.
 .Sh ENVIRONMENT
 .Nm Finger
 utilizes the following environment variable, if it exists:

usr.bin/finger/finger.c

@@ -274,6 +274,7 @@ userlist(argc, argv)
 	char conf_alias[LINE_MAX];
 	char *conf_realname;
 	int conf_length;
+	int nip;
 
 	if ((nargv = malloc((argc+1) * sizeof(char *))) == NULL ||
 	    (used = calloc(argc, sizeof(int))) == NULL)
@@ -318,20 +319,31 @@ userlist(argc, argv)
 
 	/*
 	 * Traverse the list of possible login names and check the login name
-	 * and real name against the name specified by the user.
+	 * and real name against the name specified by the user. If the name
+	 * begins with a '/', try to read the file of that name instead of
+	 * gathering the traditional finger information.
 	 */
 	if (mflag)
-		for (p = argv; *p; ++p)
-			if (((pw = getpwnam(*p)) != NULL) && !hide(pw))
-				enter_person(pw);
-			else
-				warnx("%s: no such user", *p);
+		for (p = argv; *p; ++p) {
+			if (**p == '/' && !show_text("", *p, "")) {
+				if (((pw = getpwnam(*p)) != NULL) && !hide(pw))
+					enter_person(pw);
+			   	else
+					warnx("%s: no such user", *p);
+			}
+		}
 	else {
-		while ((pw = getpwent()) != NULL) {
+		nip = 0;
+		while (nip < argc && (pw = getpwent()) != NULL) {
 			for (p = argv, ip = used; *p; ++p, ++ip)
-				if (match(pw, *p) && !hide(pw)) {
+				if (**p == '/' && *ip != 1
+				    && show_text("", *p, "")) {
+					*ip = 1;
+					nip++;
+				} else if (match(pw, *p) && !hide(pw)) {
 					enter_person(pw);
 					*ip = 1;
+					nip++;
 				}
 		}
 		for (p = argv, ip = used; *p; ++p, ++ip)

usr.bin/finger/finger.conf.5

@@ -38,13 +38,17 @@ The optional
 file is used to provide aliases that can be fingered by local
 and network users.
 This may be useful where a user's login name is not the same
-as their preferred mail address.
+as their preferred mail address, or for providing virtual login names
+than can be fingered.
 .Pp
 Lines beginning with ``#'' are comments.
 Other lines must consist of an
 alias name and a target name separated by a colon.
-A target name should be either a user, or a forward
-reference to another alias.
+A target name should be either a user, a forward
+reference to another alias or the path of a world readable file.
+.Pp
+Where an alias points to a file, the contents of that file will be displayed
+when the alias is fingered.
 .Sh EXAMPLES
 .Bd -literal
 # /etc/finger.conf alias definition file
@@ -56,6 +60,11 @@ reference to another alias.
 markk:mkn
 john.smith:dev329
 john:dev329
+sue:/etc/finger/sue.txt
+#
+# Network status message
+#
+status:/usr/local/etc/status.txt
 #
 # Administrative redirects
 #

usr.bin/finger/lprint.c

@@ -59,16 +59,14 @@ static const char rcsid[] =
 #include <string.h>
 #include <paths.h>
 #include "finger.h"
+#include "pathnames.h"
+#include "extern.h"
 
 #define	LINE_LEN	80
 #define	TAB_LEN		8		/* 8 spaces between tabs */
-#define	_PATH_FORWARD	".forward"
-#define	_PATH_PLAN	".plan"
-#define	_PATH_PROJECT	".project"
 
 static int	demi_print __P((char *, int));
 static void	lprint __P((PERSON *));
-static int	show_text __P((char *, char *, char *));
 static void     vputc __P((unsigned char));
 
 void
@@ -290,7 +288,7 @@ demi_print(str, oddfield)
 	return(oddfield);
 }
 
-static int
+int
 show_text(directory, file_name, header)
 	char *directory, *file_name, *header;
 {
@@ -316,7 +314,8 @@ show_text(directory, file_name, header)
 			if (*p == '\n')
 				break;
 		if (cnt <= 1) {
-			(void)printf("%s: ", header);
+			if (*header != '\0')
+				(void)printf("%s: ", header);
 			for (p = tbuf, cnt = nr; cnt--; ++p)
 				if (*p != '\r')
 					vputc(lastc = *p);
@@ -330,7 +329,8 @@ show_text(directory, file_name, header)
 	}
 	if ((fp = fdopen(fd, "r")) == NULL)
 		return(0);
-	(void)printf("%s:\n", header);
+	if (*header != '\0')
+		(void)printf("%s:\n", header);
 	while ((ch = getc(fp)) != EOF)
 		if (ch != '\r')
 			vputc(lastc = ch);

usr.bin/finger/pathnames.h

@@ -26,6 +26,14 @@
  * $FreeBSD$
  */
 
+#ifndef PATHNAMES_H
+
+#define	_PATH_FORWARD	".forward"
+#define	_PATH_PLAN	".plan"
+#define	_PATH_PROJECT	".project"
+
 #ifndef _PATH_FINGERCONF
 #define _PATH_FINGERCONF "/etc/finger.conf"
 #endif /* _PATH_FINGERCONF */
+
+#endif /* PATHNAMES_H */