mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-18 05:53:36 +01:00
Various cleanups:
. prototyped and staticized the internal functions while i was here, . made the thing -Wall clean, . fixed an error that causes the recipient name to be matched only for the first characters, as opposed to a full name (wonder why i'm concerned? Well, one of my login IDs is `j', and i've noticed that vacation has been sending out replies to all mailing list messages that had a jkh@ or jmb@ in it :), . introduced an option -l to list the contents of the database; mucho useful if you've got (too) many mailing list messages in your inbox and wanna make sure you don't miss the `important' mails.
This commit is contained in:
Joerg Wunsch
parent
35ecc2f917
commit
69f825545e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=18535
@ -3,4 +3,6 @@
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PROG= vacation
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DPADD= ${LIBDBM}
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CFLAGS+= -Wall
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.include <bsd.prog.mk>
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@ -29,7 +29,8 @@
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)vacation.1 8.1 (Berkeley) 6/16/93
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.\" From: @(#)vacation.1 8.1 (Berkeley) 6/16/93
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.\" $Id$
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.\"
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.Dd June 16, 1993
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.Dt VACATION 1
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@ -42,6 +43,8 @@
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.Fl i
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.Op Fl r Ar interval
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.Nm vacation
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.Fl l
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.Nm vacation
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.Op Fl a Ar alias
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.Ar login
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.Sh DESCRIPTION
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@ -88,6 +91,10 @@ are quite
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dangerous, as it allows mailers to get into
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.Dq I am on vacation
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loops.
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.It Fl l
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Print the contents of the vacation database files. For each entry,
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the address the reply has been sent to and the associated time will
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be printed to standard output.
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.El
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.Pp
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No message will be sent unless
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@ -38,7 +38,9 @@ static char copyright[] =
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)vacation.c 8.2 (Berkeley) 1/26/94";
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static char sccsid[] = "From: @(#)vacation.c 8.2 (Berkeley) 1/26/94";
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static char rcsid[] =
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"$Id$";
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#endif /* not lint */
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/*
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@ -85,6 +87,18 @@ DB *db;
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char from[MAXLINE];
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static int isdelim __P((int));
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static int junkmail __P((void));
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static void listdb __P((void));
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static int nsearch __P((char *, char *));
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static void readheaders __P((void));
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static int recent __P((void));
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static void sendmessage __P((char *));
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static void setinterval __P((time_t));
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static void setreply __P((void));
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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char **argv;
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@ -94,11 +108,11 @@ main(argc, argv)
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struct passwd *pw;
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ALIAS *cur;
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time_t interval;
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int ch, iflag;
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int ch, iflag, lflag;
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opterr = iflag = 0;
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opterr = iflag = lflag = 0;
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interval = -1;
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while ((ch = getopt(argc, argv, "a:Iir:")) != EOF)
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while ((ch = getopt(argc, argv, "a:Iilr:")) != EOF)
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switch((char)ch) {
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case 'a': /* alias */
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if (!(cur = (ALIAS *)malloc((u_int)sizeof(ALIAS))))
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@ -111,6 +125,9 @@ main(argc, argv)
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case 'i': /* init the database */
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iflag = 1;
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break;
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case 'l':
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lflag = 1; /* list the database */
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break;
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case 'r':
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if (isdigit(*optarg)) {
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interval = atol(optarg) * 86400;
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@ -128,7 +145,7 @@ main(argc, argv)
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argv += optind;
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if (argc != 1) {
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if (!iflag)
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if (!iflag && !lflag)
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usage();
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if (!(pw = getpwuid(getuid()))) {
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syslog(LOG_ERR,
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@ -153,10 +170,12 @@ main(argc, argv)
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exit(1);
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}
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if (interval != -1)
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if (lflag)
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listdb();
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else if (interval != -1)
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setinterval(interval);
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if (iflag) {
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if (iflag || lflag) {
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(void)(db->close)(db);
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exit(0);
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}
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@ -183,6 +202,7 @@ main(argc, argv)
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* readheaders --
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* read mail headers
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*/
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static void
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readheaders()
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{
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register ALIAS *cur;
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@ -199,7 +219,7 @@ readheaders()
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for (p = buf + 5; *p && *p != ' '; ++p);
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*p = '\0';
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(void)strcpy(from, buf + 5);
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if (p = index(from, '\n'))
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if ((p = index(from, '\n')))
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*p = '\0';
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if (junkmail())
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exit(0);
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@ -208,7 +228,7 @@ readheaders()
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case 'P': /* "Precedence:" */
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cont = 0;
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if (strncasecmp(buf, "Precedence", 10) ||
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buf[10] != ':' && buf[10] != ' ' && buf[10] != '\t')
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(buf[10] != ':' && buf[10] != ' ' && buf[10] != '\t'))
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break;
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if (!(p = index(buf, ':')))
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break;
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@ -250,13 +270,16 @@ findme: for (cur = names; !tome && cur; cur = cur->next)
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* nsearch --
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* do a nice, slow, search of a string for a substring.
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*/
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static int
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nsearch(name, str)
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register char *name, *str;
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{
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register int len;
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for (len = strlen(name); *str; ++str)
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if (*str == *name && !strncasecmp(name, str, len))
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if (*str == *name &&
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!strncasecmp(name, str, len) &&
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isdelim((unsigned char)str[len]))
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return(1);
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return(0);
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}
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@ -265,15 +288,16 @@ nsearch(name, str)
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* junkmail --
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* read the header and return if automagic/junk/bulk/list mail
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*/
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static int
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junkmail()
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{
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static struct ignore {
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char *name;
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int len;
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} ignore[] = {
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"-request", 8, "postmaster", 10, "uucp", 4,
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"mailer-daemon", 13, "mailer", 6, "-relay", 6,
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NULL, NULL,
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{"-request", 8}, {"postmaster", 10}, {"uucp", 4},
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{"mailer-daemon", 13}, {"mailer", 6}, {"-relay", 6},
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{NULL, NULL},
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};
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register struct ignore *cur;
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register int len;
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@ -287,8 +311,8 @@ junkmail()
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* From site!site!SENDER%site.domain%site.domain@site.domain
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*/
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if (!(p = index(from, '%')))
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if (!(p = index(from, '@'))) {
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if (p = rindex(from, '!'))
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if (!((p = index(from, '@')))) {
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if ((p = rindex(from, '!')))
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++p;
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else
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p = from;
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@ -309,6 +333,7 @@ junkmail()
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* find out if user has gotten a vacation message recently.
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* use bcopy for machines with alignment restrictions
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*/
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static int
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recent()
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{
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DBT key, data;
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@ -337,6 +362,7 @@ recent()
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* setinterval --
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* store the reply interval
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*/
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static void
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setinterval(interval)
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time_t interval;
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{
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@ -353,6 +379,7 @@ setinterval(interval)
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* setreply --
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* store that this user knows about the vacation.
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*/
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static void
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setreply()
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{
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DBT key, data;
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@ -370,6 +397,7 @@ setreply()
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* sendmessage --
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* exec sendmail to send the vacation file to sender
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*/
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static void
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sendmessage(myname)
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char *myname;
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{
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@ -411,9 +439,48 @@ sendmessage(myname)
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fclose(sfp);
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}
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static void
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usage()
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{
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syslog(LOG_NOTICE, "uid %u: usage: vacation [-i] [-a alias] login\n",
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syslog(LOG_NOTICE, "uid %u: usage: vacation [-i [-rinterval]] [-l] [-a alias] login\n",
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getuid());
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exit(1);
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}
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static void
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listdb()
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{
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DBT key, data;
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int rv;
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time_t t;
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char user[MAXLINE];
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while((rv = db->seq(db, &key, &data, R_NEXT)) == 0) {
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bcopy(key.data, user, key.size);
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user[key.size] = '\0';
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if (strcmp(user, VIT) == 0)
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continue;
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bcopy(data.data, &t, data.size);
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printf("%-40s %-10s", user, ctime(&t));
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}
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if (rv == -1)
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perror("IO error in database");
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}
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/*
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* Is `c' a delimiting character for a recipient name?
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*/
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static int
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isdelim(c)
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int c;
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{
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/*
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* NB: don't use setlocale() before, headers are supposed to
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* consist only of ASCII (aka. C locale) characters.
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*/
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if (isalnum(c))
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return(0);
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if (c == '_' || c == '-' || c == '.')
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return(0);
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return(1);
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}
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