diff options
Diffstat (limited to 'usr.bin/vacation/vacation.c')
| -rw-r--r-- | usr.bin/vacation/vacation.c | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/usr.bin/vacation/vacation.c b/usr.bin/vacation/vacation.c deleted file mode 100644 index 025eb98..0000000 --- a/usr.bin/vacation/vacation.c +++ /dev/null @@ -1,420 +0,0 @@ -/* - * Copyright (c) 1983, 1987, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char copyright[] = -"@(#) Copyright (c) 1983, 1987, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -static char sccsid[] = "@(#)vacation.c 8.2 (Berkeley) 1/26/94"; -#endif /* not lint */ - -/* -** Vacation -** Copyright (c) 1983 Eric P. Allman -** Berkeley, California -*/ - -#include <sys/param.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <pwd.h> -#include <db.h> -#include <time.h> -#include <syslog.h> -#include <tzfile.h> -#include <errno.h> -#include <unistd.h> -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <string.h> -#include <paths.h> - -/* - * VACATION -- return a message to the sender when on vacation. - * - * This program is invoked as a message receiver. It returns a - * message specified by the user to whomever sent the mail, taking - * care not to return a message too often to prevent "I am on - * vacation" loops. - */ - -#define MAXLINE 1024 /* max line from mail header */ -#define VDB ".vacation.db" /* dbm's database */ -#define VMSG ".vacation.msg" /* vacation message */ - -typedef struct alias { - struct alias *next; - char *name; -} ALIAS; -ALIAS *names; - -DB *db; - -char from[MAXLINE]; - -main(argc, argv) - int argc; - char **argv; -{ - extern int optind, opterr; - extern char *optarg; - struct passwd *pw; - ALIAS *cur; - time_t interval; - int ch, iflag; - - opterr = iflag = 0; - interval = -1; - while ((ch = getopt(argc, argv, "a:Iir:")) != EOF) - switch((char)ch) { - case 'a': /* alias */ - if (!(cur = (ALIAS *)malloc((u_int)sizeof(ALIAS)))) - break; - cur->name = optarg; - cur->next = names; - names = cur; - break; - case 'I': /* backward compatible */ - case 'i': /* init the database */ - iflag = 1; - break; - case 'r': - if (isdigit(*optarg)) { - interval = atol(optarg) * SECSPERDAY; - if (interval < 0) - usage(); - } - else - interval = LONG_MAX; - break; - case '?': - default: - usage(); - } - argc -= optind; - argv += optind; - - if (argc != 1) { - if (!iflag) - usage(); - if (!(pw = getpwuid(getuid()))) { - syslog(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); - exit(1); - } - if (chdir(pw->pw_dir)) { - syslog(LOG_NOTICE, - "vacation: no such directory %s.\n", pw->pw_dir); - exit(1); - } - - 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)); - exit(1); - } - - if (interval != -1) - setinterval(interval); - - if (iflag) { - (void)(db->close)(db); - exit(0); - } - - if (!(cur = malloc((u_int)sizeof(ALIAS)))) - exit(1); - cur->name = pw->pw_name; - cur->next = names; - names = cur; - - readheaders(); - if (!recent()) { - setreply(); - (void)(db->close)(db); - sendmessage(pw->pw_name); - } - else - (void)(db->close)(db); - exit(0); - /* NOTREACHED */ -} - -/* - * readheaders -- - * read mail headers - */ -readheaders() -{ - register ALIAS *cur; - register char *p; - int tome, cont; - char buf[MAXLINE]; - - cont = tome = 0; - while (fgets(buf, sizeof(buf), stdin) && *buf != '\n') - switch(*buf) { - case 'F': /* "From " */ - cont = 0; - if (!strncmp(buf, "From ", 5)) { - for (p = buf + 5; *p && *p != ' '; ++p); - *p = '\0'; - (void)strcpy(from, buf + 5); - if (p = index(from, '\n')) - *p = '\0'; - if (junkmail()) - exit(0); - } - break; - case 'P': /* "Precedence:" */ - cont = 0; - if (strncasecmp(buf, "Precedence", 10) || - buf[10] != ':' && buf[10] != ' ' && buf[10] != '\t') - break; - if (!(p = index(buf, ':'))) - break; - while (*++p && isspace(*p)); - if (!*p) - break; - if (!strncasecmp(p, "junk", 4) || - !strncasecmp(p, "bulk", 4) || - !strncasecmp(p, "list", 4)) - exit(0); - break; - case 'C': /* "Cc:" */ - if (strncmp(buf, "Cc:", 3)) - break; - cont = 1; - goto findme; - case 'T': /* "To:" */ - if (strncmp(buf, "To:", 3)) - break; - cont = 1; - goto findme; - default: - if (!isspace(*buf) || !cont || tome) { - cont = 0; - break; - } -findme: for (cur = names; !tome && cur; cur = cur->next) - tome += nsearch(cur->name, buf); - } - if (!tome) - exit(0); - if (!*from) { - syslog(LOG_NOTICE, "vacation: no initial \"From\" line.\n"); - exit(1); - } -} - -/* - * nsearch -- - * do a nice, slow, search of a string for a substring. - */ -nsearch(name, str) - register char *name, *str; -{ - register int len; - - for (len = strlen(name); *str; ++str) - if (*str == *name && !strncasecmp(name, str, len)) - return(1); - return(0); -} - -/* - * junkmail -- - * read the header and return if automagic/junk/bulk/list mail - */ -junkmail() -{ - static struct ignore { - char *name; - int len; - } ignore[] = { - "-request", 8, "postmaster", 10, "uucp", 4, - "mailer-daemon", 13, "mailer", 6, "-relay", 6, - NULL, NULL, - }; - register struct ignore *cur; - register int len; - register char *p; - - /* - * This is mildly amusing, and I'm not positive it's right; trying - * to find the "real" name of the sender, assuming that addresses - * will be some variant of: - * - * From site!site!SENDER%site.domain%site.domain@site.domain - */ - if (!(p = index(from, '%'))) - if (!(p = index(from, '@'))) { - if (p = rindex(from, '!')) - ++p; - else - p = from; - for (; *p; ++p); - } - len = p - from; - for (cur = ignore; cur->name; ++cur) - if (len >= cur->len && - !strncasecmp(cur->name, p - cur->len, cur->len)) - return(1); - return(0); -} - -#define VIT "__VACATION__INTERVAL__TIMER__" - -/* - * recent -- - * find out if user has gotten a vacation message recently. - * use bcopy for machines with alignment restrictions - */ -recent() -{ - DBT key, data; - time_t then, next; - - /* get interval time */ - key.data = VIT; - key.size = sizeof(VIT); - if ((db->get)(db, &key, &data, 0)) - next = SECSPERDAY * DAYSPERWEEK; - else - bcopy(data.data, &next, sizeof(next)); - - /* get record for this address */ - key.data = from; - key.size = strlen(from); - if (!(db->get)(db, &key, &data, 0)) { - bcopy(data.data, &then, sizeof(then)); - if (next == LONG_MAX || then + next > time(NULL)) - return(1); - } - return(0); -} - -/* - * setinterval -- - * store the reply interval - */ -setinterval(interval) - time_t interval; -{ - DBT key, data; - - key.data = VIT; - key.size = sizeof(VIT); - data.data = &interval; - data.size = sizeof(interval); - (void)(db->put)(db, &key, &data, 0); -} - -/* - * setreply -- - * store that this user knows about the vacation. - */ -setreply() -{ - DBT key, data; - time_t now; - - key.data = from; - key.size = strlen(from); - (void)time(&now); - data.data = &now; - data.size = sizeof(now); - (void)(db->put)(db, &key, &data, 0); -} - -/* - * sendmessage -- - * exec sendmail to send the vacation file to sender - */ -sendmessage(myname) - char *myname; -{ - FILE *mfp, *sfp; - int i; - int pvect[2]; - char buf[MAXLINE]; - - mfp = fopen(VMSG, "r"); - if (mfp == NULL) { - syslog(LOG_NOTICE, "vacation: no ~%s/%s file.\n", myname, VMSG); - exit(1); - } - if (pipe(pvect) < 0) { - syslog(LOG_ERR, "vacation: pipe: %s", strerror(errno)); - exit(1); - } - i = vfork(); - if (i < 0) { - syslog(LOG_ERR, "vacation: fork: %s", strerror(errno)); - exit(1); - } - if (i == 0) { - dup2(pvect[0], 0); - close(pvect[0]); - close(pvect[1]); - fclose(mfp); - execl(_PATH_SENDMAIL, "sendmail", "-f", myname, from, NULL); - syslog(LOG_ERR, "vacation: can't exec %s: %s", - _PATH_SENDMAIL, strerror(errno)); - exit(1); - } - close(pvect[0]); - sfp = fdopen(pvect[1], "w"); - fprintf(sfp, "To: %s\n", from); - while (fgets(buf, sizeof buf, mfp)) - fputs(buf, sfp); - fclose(mfp); - fclose(sfp); -} - -usage() -{ - syslog(LOG_NOTICE, "uid %u: usage: vacation [-i] [-a alias] login\n", - getuid()); - exit(1); -} |
