Date: Thu, 10 Jun 1999 23:40:12 +0200 From: Sheldon Hearn <sheldonh@uunet.co.za> To: Tim Vanderhoek <vanderh@ecf.utoronto.ca> Cc: "Ronald F. Guilmette" <rfg@monkeys.com>, freebsd-bugs@FreeBSD.ORG Subject: Re: bin/11987: vacation(1) documentation and error logging both suck Message-ID: <81562.929050812@axl.noc.iafrica.com> In-Reply-To: Your message of "Thu, 10 Jun 1999 16:32:01 -0400." <19990610163201.A1147@mad>
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On Thu, 10 Jun 1999 16:32:01 -0400, Tim Vanderhoek wrote:
> Anyways, I'll reopen the PR and assign it to myself in a moment. I
> can't promise you that I'll get to it anytime soon...
[...]
> Sheldon, since your the PR-guy of the moment... Suggestions? :-)
Yeah, give this untested patch a try. It ought to be backward compatible
with our existing vacation. See the manpage for details.
Now since you reopened the PR and assigned it to yourself, I _do_ expect
feedback, y'hear?
And you too, Mr Guilmette. Especially after that impressive argument on
vacation being the only end-user toy to report errors to syslog(3). Now
_that_ made it sound special enough to work on.
;-)
Ciao,
Sheldon.
Index: usr.bin/vacation/vacation.1
===================================================================
RCS file: /home/ncvs/src/usr.bin/vacation/vacation.1,v
retrieving revision 1.6
diff -u -d -r1.6 vacation.1
--- vacation.1 1997/02/22 19:57:38 1.6
+++ vacation.1 1999/06/10 21:29:26
@@ -40,11 +40,14 @@
.Nd return ``I am not here'' indication
.Sh SYNOPSIS
.Nm vacation
+.Op Fl d
.Fl i
.Op Fl r Ar interval
.Nm vacation
+.Op Fl d
.Fl l
.Nm vacation
+.Op Fl d
.Op Fl a Ar alias
.Ar login
.Sh DESCRIPTION
@@ -71,6 +74,11 @@
.Ar alias
in the same manner as those received for the user's
login name.
+.It Fl d
+Enable debugging mode. If possible, errors are logged to the file
+.Pa .vacation.log
+in the user's home directory. Some errors (such as invocation errors)
+will be written to the standard output.
.It Fl i
Initialize the vacation database files. It should be used
before you modify your
@@ -155,16 +163,24 @@
.Dq From
line automatically.
.Pp
-Fatal errors, such as calling
+If the
+.Fl d
+option is not specified, fatal errors, such as calling
.Nm vacation
with incorrect arguments, or with non-existent
.Ar login Ns Ar s ,
are logged in the system log file, using
.Xr syslog 3 .
+.Sh DIAGNOSTICS
+The
+.Nm
+utility exits 0 on success, and >0 if an error occurs.
.Sh FILES
.Bl -tag -width "vacation.dirxxx" -compact
.It Pa ~/.vacation.db
database file
+.It Pa ~/.vacation.log
+debugging log
.It Pa ~/.vacation.msg
message to send
.El
Index: usr.bin/vacation/vacation.c
===================================================================
RCS file: /home/ncvs/src/usr.bin/vacation/vacation.c,v
retrieving revision 1.13
diff -u -d -r1.13 vacation.c
--- vacation.c 1998/10/13 14:52:32 1.13
+++ vacation.c 1999/06/10 21:38:25
@@ -62,6 +62,7 @@
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
+#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
@@ -78,6 +79,7 @@
#define MAXLINE 1024 /* max line from mail header */
#define VDB ".vacation.db" /* dbm's database */
#define VMSG ".vacation.msg" /* vacation message */
+#define LOGFILE ".vacation.log" /* debugging logfile */
typedef struct alias {
struct alias *next;
@@ -88,6 +90,8 @@
DB *db;
char from[MAXLINE];
+FILE *logfp = NULL;
+void (*msglog)(int, const char *, ...) = &syslog;
static int isdelim __P((int));
static int junkmail __P((void));
@@ -99,6 +103,7 @@
static void setinterval __P((time_t));
static void setreply __P((void));
static void usage __P((void));
+static void flog __P((int, const char *, ...));
int
main(argc, argv)
@@ -114,7 +119,7 @@
opterr = iflag = lflag = 0;
interval = -1;
- while ((ch = getopt(argc, argv, "a:Iilr:")) != -1)
+ while ((ch = getopt(argc, argv, "a:dIilr:")) != -1)
switch((char)ch) {
case 'a': /* alias */
if (!(cur = (ALIAS *)malloc((u_int)sizeof(ALIAS))))
@@ -123,6 +128,9 @@
cur->next = names;
names = cur;
break;
+ case 'd': /* debug mode */
+ msglog = &flog;
+ break;
case 'I': /* backward compatible */
case 'i': /* init the database */
iflag = 1;
@@ -150,25 +158,28 @@
if (!iflag && !lflag)
usage();
if (!(pw = getpwuid(getuid()))) {
- syslog(LOG_ERR,
+ msglog(LOG_ERR,
"vacation: no such user uid %u.\n", getuid());
exit(1);
}
}
else if (!(pw = getpwnam(*argv))) {
- syslog(LOG_ERR, "vacation: no such user %s.\n", *argv);
+ msglog(LOG_ERR, "vacation: no such user %s.\n", *argv);
exit(1);
}
if (chdir(pw->pw_dir)) {
- syslog(LOG_NOTICE,
+ msglog(LOG_NOTICE,
"vacation: no such directory %s.\n", pw->pw_dir);
exit(1);
}
+ if (msglog == &flog && !(logfp = fopen(LOGFILE, "a+")))
+ printf("vacation: %s: %s\n", LOGFILE, strerror(errno));
+
db = dbopen(VDB, O_CREAT|O_RDWR | (iflag ? O_TRUNC : 0),
S_IRUSR|S_IWUSR, DB_HASH, NULL);
if (!db) {
- syslog(LOG_NOTICE, "vacation: %s: %s\n", VDB, strerror(errno));
+ msglog(LOG_NOTICE, "vacation: %s: %s\n", VDB, strerror(errno));
exit(1);
}
@@ -263,7 +274,7 @@
if (!tome)
exit(0);
if (!*from) {
- syslog(LOG_NOTICE, "vacation: no initial \"From\" line.\n");
+ msglog(LOG_NOTICE, "vacation: no initial \"From\" line.\n");
exit(1);
}
}
@@ -410,16 +421,16 @@
mfp = fopen(VMSG, "r");
if (mfp == NULL) {
- syslog(LOG_NOTICE, "vacation: no ~%s/%s file.\n", myname, VMSG);
+ msglog(LOG_NOTICE, "vacation: no ~%s/%s file.\n", myname, VMSG);
exit(1);
}
if (pipe(pvect) < 0) {
- syslog(LOG_ERR, "vacation: pipe: %s", strerror(errno));
+ msglog(LOG_ERR, "vacation: pipe: %s", strerror(errno));
exit(1);
}
i = fork();
if (i < 0) {
- syslog(LOG_ERR, "vacation: fork: %s", strerror(errno));
+ msglog(LOG_ERR, "vacation: fork: %s", strerror(errno));
exit(1);
}
if (i == 0) {
@@ -428,7 +439,7 @@
close(pvect[1]);
close(fileno(mfp));
execl(_PATH_SENDMAIL, "sendmail", "-f", myname, "--", from, NULL);
- syslog(LOG_ERR, "vacation: can't exec %s: %s",
+ msglog(LOG_ERR, "vacation: can't exec %s: %s",
_PATH_SENDMAIL, strerror(errno));
_exit(1);
}
@@ -444,7 +455,7 @@
static void
usage()
{
- syslog(LOG_NOTICE, "uid %u: usage: vacation [-i [-rinterval]] [-l] [-a alias] login\n",
+ msglog(LOG_NOTICE, "uid %u: usage: vacation [-d] [-i [-rinterval]] [-l] [-a alias] login\n",
getuid());
exit(1);
}
@@ -485,4 +496,22 @@
if (c == '_' || c == '-' || c == '.')
return(0);
return(1);
+}
+
+/*
+ * Append a message to a logfile in the user's home directory for ease
+ * of debugging.
+ */
+static void
+flog(int i, const char *fmt, ...)
+{
+ va_list ap;
+
+ i = 0; /* Printing syslog priority not implemented */
+ va_start(ap, fmt);
+ if (logfp)
+ fprintf(logfp, fmt, ap);
+ else
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
}
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