bb5359e97e
eliminates the "X-authentication-warning" header line that has been coming out since I made it so that sendmail is run totally as the user whose calendar file is currently being processed.
356 lines
9.1 KiB
C
356 lines
9.1 KiB
C
/*
|
|
* Copyright (c) 1989, 1993, 1994
|
|
* 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 const char copyright[] =
|
|
"@(#) Copyright (c) 1989, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static const char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <locale.h>
|
|
#include <string.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/time.h>
|
|
#include <stdlib.h>
|
|
#include <pwd.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "pathnames.h"
|
|
#include "calendar.h"
|
|
|
|
|
|
char *calendarFile = "calendar"; /* default calendar file */
|
|
char *calendarHome = ".calendar"; /* HOME */
|
|
char *calendarNoMail = "nomail"; /* don't sent mail if this file exist */
|
|
|
|
struct fixs neaster, npaskha;
|
|
|
|
struct iovec header[] = {
|
|
{"From: ", 6},
|
|
{NULL, 0},
|
|
{" (Reminder Service)\nTo: ", 24},
|
|
{NULL, 0},
|
|
{"\nSubject: ", 10},
|
|
{NULL, 0},
|
|
{"'s Calendar\nPrecedence: bulk\n\n", 30},
|
|
};
|
|
|
|
|
|
void
|
|
cal()
|
|
{
|
|
register int printing;
|
|
register char *p;
|
|
FILE *fp;
|
|
int ch, l;
|
|
int month;
|
|
int day;
|
|
int var;
|
|
char buf[2048 + 1];
|
|
|
|
if ((fp = opencal()) == NULL)
|
|
return;
|
|
for (printing = 0; fgets(buf, sizeof(buf), stdin) != NULL;) {
|
|
if ((p = strchr(buf, '\n')) != NULL)
|
|
*p = '\0';
|
|
else
|
|
while ((ch = getchar()) != '\n' && ch != EOF);
|
|
for (l = strlen(buf);
|
|
l > 0 && isspace((unsigned char)buf[l - 1]);
|
|
l--)
|
|
;
|
|
buf[l] = '\0';
|
|
if (buf[0] == '\0')
|
|
continue;
|
|
if (strncmp(buf, "LANG=", 5) == 0) {
|
|
(void) setlocale(LC_ALL, buf + 5);
|
|
setnnames();
|
|
continue;
|
|
}
|
|
if (strncasecmp(buf, "Easter=", 7) == 0 && buf[7]) {
|
|
if (neaster.name != NULL)
|
|
free(neaster.name);
|
|
neaster.name = strdup(buf + 7);
|
|
neaster.len = strlen(buf + 7);
|
|
continue;
|
|
}
|
|
if (strncasecmp(buf, "Paskha=", 7) == 0 && buf[7]) {
|
|
if (npaskha.name != NULL)
|
|
free(npaskha.name);
|
|
npaskha.name = strdup(buf + 7);
|
|
npaskha.len = strlen(buf + 7);
|
|
continue;
|
|
}
|
|
if (buf[0] != '\t') {
|
|
printing = isnow(buf, &month, &day, &var) ? 1 : 0;
|
|
if ((p = strchr(buf, '\t')) == NULL)
|
|
continue;
|
|
if (p > buf && p[-1] == '*')
|
|
var = 1;
|
|
if (printing) {
|
|
struct tm tm;
|
|
char dbuf[30];
|
|
|
|
tm.tm_sec = 0; /* unused */
|
|
tm.tm_min = 0; /* unused */
|
|
tm.tm_hour = 0; /* unused */
|
|
tm.tm_wday = 0; /* unused */
|
|
tm.tm_mon = month - 1;
|
|
tm.tm_mday = day;
|
|
tm.tm_year = tp->tm_year; /* unused */
|
|
(void)strftime(dbuf, sizeof(dbuf), "%c", &tm);
|
|
dbuf[10] = '\0';
|
|
(void)fprintf(fp, "%s%c%s\n",
|
|
dbuf + 4/* skip weekdays */,
|
|
var ? '*' : ' ', p);
|
|
}
|
|
}
|
|
else if (printing)
|
|
fprintf(fp, "%s\n", buf);
|
|
}
|
|
closecal(fp);
|
|
}
|
|
|
|
int
|
|
getfield(p, endp, flags)
|
|
char *p, **endp;
|
|
int *flags;
|
|
{
|
|
int val, var;
|
|
char *start, savech;
|
|
|
|
for (; !isdigit((unsigned char)*p) && !isalpha((unsigned char)*p) && *p != '*'; ++p);
|
|
if (*p == '*') { /* `*' is current month */
|
|
*flags |= F_ISMONTH;
|
|
*endp = p+1;
|
|
return (tp->tm_mon + 1);
|
|
}
|
|
if (isdigit((unsigned char)*p)) {
|
|
val = strtol(p, &p, 10); /* if 0, it's failure */
|
|
for (; !isdigit((unsigned char)*p) && !isalpha((unsigned char)*p) && *p != '*'; ++p);
|
|
*endp = p;
|
|
return (val);
|
|
}
|
|
for (start = p; isalpha((unsigned char)*++p););
|
|
|
|
/* Sunday-1 */
|
|
if (*p == '+' || *p == '-')
|
|
for(; isdigit((unsigned char)*++p););
|
|
|
|
savech = *p;
|
|
*p = '\0';
|
|
|
|
/* Month */
|
|
if ((val = getmonth(start)) != 0)
|
|
*flags |= F_ISMONTH;
|
|
|
|
/* Day */
|
|
else if ((val = getday(start)) != 0) {
|
|
*flags |= F_ISDAY;
|
|
|
|
/* variable weekday */
|
|
if ((var = getdayvar(start)) != 0) {
|
|
if (var <=5 && var >= -4)
|
|
val += var * 10;
|
|
#ifdef DEBUG
|
|
printf("var: %d\n", var);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* Easter */
|
|
else if ((val = geteaster(start, tp->tm_year + 1900)) != 0)
|
|
*flags |= F_EASTER;
|
|
|
|
/* Paskha */
|
|
else if ((val = getpaskha(start, tp->tm_year + 1900)) != 0)
|
|
*flags |= F_EASTER;
|
|
|
|
/* undefined rest */
|
|
else {
|
|
*p = savech;
|
|
return (0);
|
|
}
|
|
for (*p = savech; !isdigit((unsigned char)*p) && !isalpha((unsigned char)*p) && *p != '*'; ++p);
|
|
*endp = p;
|
|
return (val);
|
|
}
|
|
|
|
char path[MAXPATHLEN + 1];
|
|
|
|
FILE *
|
|
opencal()
|
|
{
|
|
uid_t uid;
|
|
int fd, pdes[2];
|
|
struct stat sbuf;
|
|
|
|
/* open up calendar file as stdin */
|
|
if (!freopen(calendarFile, "r", stdin)) {
|
|
if (doall) {
|
|
if (chdir(calendarHome) != 0)
|
|
return (NULL);
|
|
if (stat(calendarNoMail, &sbuf) == 0)
|
|
return (NULL);
|
|
if (!freopen(calendarFile, "r", stdin))
|
|
return (NULL);
|
|
} else {
|
|
chdir(getenv("HOME"));
|
|
if (!(chdir(calendarHome) == 0 &&
|
|
freopen(calendarFile, "r", stdin)))
|
|
errx(1, "no calendar file: ``%s'' or ``~/%s/%s\n", calendarFile, calendarHome, calendarFile);
|
|
}
|
|
}
|
|
if (pipe(pdes) < 0)
|
|
return (NULL);
|
|
switch (vfork()) {
|
|
case -1: /* error */
|
|
(void)close(pdes[0]);
|
|
(void)close(pdes[1]);
|
|
return (NULL);
|
|
case 0:
|
|
/* child -- stdin already setup, set stdout to pipe input */
|
|
if (pdes[1] != STDOUT_FILENO) {
|
|
(void)dup2(pdes[1], STDOUT_FILENO);
|
|
(void)close(pdes[1]);
|
|
}
|
|
(void)close(pdes[0]);
|
|
uid = geteuid();
|
|
if (setuid(getuid()) < 0) {
|
|
fprintf(stderr, "calendar: first setuid failed\n");
|
|
_exit(1);
|
|
};
|
|
if (setgid(getegid()) < 0) {
|
|
fprintf(stderr, "calendar: setgid failed\n");
|
|
_exit(1);
|
|
}
|
|
if (setuid(uid) < 0) {
|
|
fprintf(stderr, "calendar: setuid failed\n");
|
|
_exit(1);
|
|
}
|
|
execl(_PATH_CPP, "cpp", "-P", "-I.", _PATH_INCLUDE, NULL);
|
|
(void)fprintf(stderr,
|
|
"calendar: execl: %s: %s.\n", _PATH_CPP, strerror(errno));
|
|
_exit(1);
|
|
}
|
|
/* parent -- set stdin to pipe output */
|
|
(void)dup2(pdes[0], STDIN_FILENO);
|
|
(void)close(pdes[0]);
|
|
(void)close(pdes[1]);
|
|
|
|
/* not reading all calendar files, just set output to stdout */
|
|
if (!doall)
|
|
return (stdout);
|
|
|
|
/* set output to a temporary file, so if no output don't send mail */
|
|
(void)snprintf(path, sizeof(path), "%s/_calXXXXXX", _PATH_TMP);
|
|
if ((fd = mkstemp(path)) < 0)
|
|
return (NULL);
|
|
return (fdopen(fd, "w+"));
|
|
}
|
|
|
|
void
|
|
closecal(fp)
|
|
FILE *fp;
|
|
{
|
|
uid_t uid;
|
|
struct stat sbuf;
|
|
int nread, pdes[2], status;
|
|
char buf[1024];
|
|
|
|
if (!doall)
|
|
return;
|
|
|
|
(void)rewind(fp);
|
|
if (fstat(fileno(fp), &sbuf) || !sbuf.st_size)
|
|
goto done;
|
|
if (pipe(pdes) < 0)
|
|
goto done;
|
|
switch (vfork()) {
|
|
case -1: /* error */
|
|
(void)close(pdes[0]);
|
|
(void)close(pdes[1]);
|
|
goto done;
|
|
case 0:
|
|
/* child -- set stdin to pipe output */
|
|
if (pdes[0] != STDIN_FILENO) {
|
|
(void)dup2(pdes[0], STDIN_FILENO);
|
|
(void)close(pdes[0]);
|
|
}
|
|
(void)close(pdes[1]);
|
|
uid = geteuid();
|
|
if (setuid(getuid()) < 0) {
|
|
fprintf(stderr, "calendar: setuid failed\n");
|
|
_exit(1);
|
|
};
|
|
if (setgid(getegid()) < 0) {
|
|
fprintf(stderr, "calendar: setgid failed\n");
|
|
_exit(1);
|
|
}
|
|
if (setuid(uid) < 0) {
|
|
fprintf(stderr, "calendar: setuid failed\n");
|
|
_exit(1);
|
|
}
|
|
execl(_PATH_SENDMAIL, "sendmail", "-i", "-t", "-F",
|
|
"\"Reminder Service\"", NULL);
|
|
(void)fprintf(stderr,
|
|
"calendar: %s: %s.\n", _PATH_SENDMAIL, strerror(errno));
|
|
_exit(1);
|
|
}
|
|
/* parent -- write to pipe input */
|
|
(void)close(pdes[0]);
|
|
|
|
header[1].iov_base = header[3].iov_base = pw->pw_name;
|
|
header[1].iov_len = header[3].iov_len = strlen(pw->pw_name);
|
|
writev(pdes[1], header, 7);
|
|
while ((nread = read(fileno(fp), buf, sizeof(buf))) > 0)
|
|
(void)write(pdes[1], buf, nread);
|
|
(void)close(pdes[1]);
|
|
done: (void)fclose(fp);
|
|
(void)unlink(path);
|
|
while (wait(&status) >= 0);
|
|
}
|
|
|