slackware-current/source/n/biff+comsat/biff+comsat.offset.diff

--- ./comsat/comsat.c.orig	Sun Jun  3 01:31:30 2001
+++ ./comsat/comsat.c	Sun Jun  3 01:31:34 2001
@@ -77,8 +77,8 @@
 static int nutmp;
 
 static void mailfor(char *name);
-static void notify(struct utmp *utp, off_t offset);
-static void jkfprintf(FILE *, const char *name, off_t offset, const char *cr);
+static void notify(struct utmp *utp, off_t offset, const char *mailfile);
+static void jkfprintf(FILE *, const char *name, off_t offset, const char *cr, const char *mailfile);
 static void onalrm(int);
 
 int main(void) {
@@ -273,20 +273,27 @@
 static void mailfor(char *name)
 {
 	struct utmp *utp;
-	char *cp;
+	char *cp, *cp2;
 	off_t offset;
 
+ 	dsyslog(LOG_DEBUG, "mailfor: name =  %s\n", name); /* T.Crane  29/06/2001 */
+
+	/* Eg. name is "tom@5990326:/var/spool/mail/tom.wien" */
 	/* Break off the file offset part and convert it to an integer. */
 	cp = strchr(name, '@');
+	/* First, get the actual filename, ie. the part after the ':' */
+	cp2 = strchr(name, ':')+1; /* If it does not exist cp2==NULL */
 	if (!cp) return;
 	*cp = 0;
 	offset = atol(cp + 1);
+ 	dsyslog(LOG_DEBUG, "mailfor: offset =  %d\n", offset); /* T.Crane  29/06/2001 */
+ 	dsyslog(LOG_DEBUG, "mailfor: mailfile =  %s\n", cp2); /* T.Crane  29/06/2001 */
 
 	/* Look through the utmp and call notify() for each matching login. */
 	utp = &utmp[nutmp];
 	while (--utp >= utmp) {
 		if (!strncmp(utp->ut_name, name, sizeof(utmp[0].ut_name)))
-			notify(utp, offset);
+			notify(utp, offset, cp2);
 	}
 }
 
@@ -314,7 +321,7 @@
 /*
  * This actually writes to the user's terminal.
  */
-static void notify(struct utmp *utp, off_t offset)
+static void notify(struct utmp *utp, off_t offset, const char *mailfile)
 {
 	FILE *tp;                              /* file open on tty */
 	struct stat stb;
@@ -427,7 +434,7 @@
 	/*
 	 * Print the first few lines of the message.
 	 */
-	jkfprintf(tp, name, offset, cr);
+	jkfprintf(tp, name, offset, cr, mailfile);
 
 	/*
 	 * Close up and quit the child process.
@@ -439,8 +446,11 @@
 /*
  * This prints a few lines from the mailbox of the user "name" at offset
  * "offset", using "cr" as the line break string, to the file "tp".
+ * Added mailfile variable to take the name of the actual mailfile
+ * passed to us rather than the defalt mailfile of the user "name", 
+ * T.Crane (T.Crane@rhul.ac.uk), 29/05/2001.
  */
-static void jkfprintf(FILE *tp, const char *name, off_t offset, const char *cr)
+static void jkfprintf(FILE *tp, const char *name, off_t offset, const char  *cr, const char *mailfile)
 {
 	char *cp, ch;
 	FILE *fi;
@@ -473,7 +483,17 @@
 	/*
 	 * Open the user's mailbox (recall we're already in the mail spool dir)
 	 */
-	fi = fopen(name, "r");
+
+	/* If mailfile == NULL, then use name (ie. users' username instead) */
+	if (mailfile != NULL) {
+	 dsyslog(LOG_DEBUG, "jkfprint: actual mailbox = %s\n",mailfile);
+	 fi = fopen(mailfile, "r");
+	}
+	else {
+	 dsyslog(LOG_DEBUG, "jkfprint: actual mailbox==NULL, using name %s\n",name);
+	 fi = fopen(name, "r");
+	  }
+
 	if (fi == NULL)	return;
 
 	/* Move to requested offset */