| Current Path : /usr/src/usr.bin/calendar/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/usr.bin/calendar/io.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.
* 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
#if 0
#ifndef lint
static char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/usr.bin/calendar/io.c 222755 2011-06-06 13:50:29Z jh $");
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <langinfo.h>
#include <locale.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pathnames.h"
#include "calendar.h"
const char *calendarFile = "calendar"; /* default calendar file */
const char *calendarHomes[] = {".calendar", _PATH_INCLUDE}; /* HOME */
const char *calendarNoMail = "nomail"; /* don't sent mail if this file exist */
char path[MAXPATHLEN];
struct fixs neaster, npaskha, ncny, nfullmoon, nnewmoon;
struct fixs nmarequinox, nsepequinox, njunsolstice, ndecsolstice;
#define REPLACE(string, slen, struct_) \
if (strncasecmp(buf, (string), (slen)) == 0 && buf[(slen)]) { \
if (struct_.name != NULL) \
free(struct_.name); \
if ((struct_.name = strdup(buf + (slen))) == NULL) \
errx(1, "cannot allocate memory"); \
struct_.len = strlen(buf + (slen)); \
continue; \
}
void
cal(void)
{
char *pp, p;
FILE *fp;
int ch, l;
int count, i;
int month[MAXCOUNT];
int day[MAXCOUNT];
int year[MAXCOUNT];
char **extradata; /* strings of 20 length */
int flags;
static int d_first = -1;
char buf[2048 + 1];
struct event *events[MAXCOUNT];
struct tm tm;
char dbuf[80];
extradata = (char **)calloc(MAXCOUNT, sizeof(char *));
for (i = 0; i < MAXCOUNT; i++) {
extradata[i] = (char *)calloc(1, 20);
}
/* Unused */
tm.tm_sec = 0;
tm.tm_min = 0;
tm.tm_hour = 0;
tm.tm_wday = 0;
count = 0;
if ((fp = opencal()) == NULL) {
free(extradata);
return;
}
while (fgets(buf, sizeof(buf), stdin) != NULL) {
if ((pp = strchr(buf, '\n')) != NULL)
*pp = '\0';
else
/* Flush this line */
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;
/* Parse special definitions: LANG, Easter, Paskha etc */
if (strncmp(buf, "LANG=", 5) == 0) {
(void)setlocale(LC_ALL, buf + 5);
d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
setnnames();
continue;
}
REPLACE("Easter=", 7, neaster);
REPLACE("Paskha=", 7, npaskha);
REPLACE("ChineseNewYear=", 15, ncny);
REPLACE("NewMoon=", 8, nnewmoon);
REPLACE("FullMoon=", 9, nfullmoon);
REPLACE("MarEquinox=", 11, nmarequinox);
REPLACE("SepEquinox=", 11, nsepequinox);
REPLACE("JunSolstice=", 12, njunsolstice);
REPLACE("DecSolstice=", 12, ndecsolstice);
if (strncmp(buf, "SEQUENCE=", 9) == 0) {
setnsequences(buf + 9);
continue;
}
/*
* If the line starts with a tab, the data has to be
* added to the previous line
*/
if (buf[0] == '\t') {
for (i = 0; i < count; i++)
event_continue(events[i], buf);
continue;
}
/* Get rid of leading spaces (non-standard) */
while (isspace((unsigned char)buf[0]))
memcpy(buf, buf + 1, strlen(buf));
/* No tab in the line, then not a valid line */
if ((pp = strchr(buf, '\t')) == NULL)
continue;
/* Trim spaces in front of the tab */
while (isspace((unsigned char)pp[-1]))
pp--;
p = *pp;
*pp = '\0';
if ((count = parsedaymonth(buf, year, month, day, &flags,
extradata)) == 0)
continue;
*pp = p;
if (count < 0) {
/* Show error status based on return value */
fprintf(stderr, "Ignored: %s\n", buf);
if (count == -1)
continue;
count = -count + 1;
}
/* Find the last tab */
while (pp[1] == '\t')
pp++;
if (d_first < 0)
d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
for (i = 0; i < count; i++) {
tm.tm_mon = month[i] - 1;
tm.tm_mday = day[i];
tm.tm_year = year[i] - 1900;
(void)strftime(dbuf, sizeof(dbuf),
d_first ? "%e %b" : "%b %e", &tm);
if (debug)
fprintf(stderr, "got %s\n", pp);
events[i] = event_add(year[i], month[i], day[i], dbuf,
((flags &= F_VARIABLE) != 0) ? 1 : 0, pp,
extradata[i]);
}
}
event_print_all(fp);
closecal(fp);
free(extradata);
}
FILE *
opencal(void)
{
uid_t uid;
size_t i;
int fd, found, pdes[2];
struct stat sbuf;
/* open up calendar file as stdin */
if (!freopen(calendarFile, "r", stdin)) {
if (doall) {
if (chdir(calendarHomes[0]) != 0)
return (NULL);
if (stat(calendarNoMail, &sbuf) == 0)
return (NULL);
if (!freopen(calendarFile, "r", stdin))
return (NULL);
} else {
char *home = getenv("HOME");
if (home == NULL || *home == '\0')
errx(1, "cannot get home directory");
if (chdir(home) != 0)
errx(1, "cannot enter home directory");
for (found = i = 0; i < sizeof(calendarHomes) /
sizeof(calendarHomes[0]); i++)
if (chdir(calendarHomes[i]) == 0 &&
freopen(calendarFile, "r", stdin)) {
found = 1;
break;
}
if (!found)
errx(1,
"can't open calendar file \"%s\": %s (%d)",
calendarFile, strerror(errno), errno);
}
}
if (pipe(pdes) < 0)
return (NULL);
switch (fork()) {
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) {
warnx("first setuid failed");
_exit(1);
};
if (setgid(getegid()) < 0) {
warnx("setgid failed");
_exit(1);
}
if (setuid(uid) < 0) {
warnx("setuid failed");
_exit(1);
}
execl(_PATH_CPP, "cpp", "-P",
"-traditional", "-nostdinc", /* GCC specific opts */
"-I.", "-I", _PATH_INCLUDE, (char *)NULL);
warn(_PATH_CPP);
_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(FILE *fp)
{
uid_t uid;
struct stat sbuf;
int nread, pdes[2], status;
char buf[1024];
if (!doall)
return;
rewind(fp);
if (fstat(fileno(fp), &sbuf) || !sbuf.st_size)
goto done;
if (pipe(pdes) < 0)
goto done;
switch (fork()) {
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) {
warnx("setuid failed");
_exit(1);
};
if (setgid(getegid()) < 0) {
warnx("setgid failed");
_exit(1);
}
if (setuid(uid) < 0) {
warnx("setuid failed");
_exit(1);
}
execl(_PATH_SENDMAIL, "sendmail", "-i", "-t", "-F",
"\"Reminder Service\"", (char *)NULL);
warn(_PATH_SENDMAIL);
_exit(1);
}
/* parent -- write to pipe input */
(void)close(pdes[0]);
write(pdes[1], "From: \"Reminder Service\" <", 26);
write(pdes[1], pw->pw_name, strlen(pw->pw_name));
write(pdes[1], ">\nTo: <", 7);
write(pdes[1], pw->pw_name, strlen(pw->pw_name));
write(pdes[1], ">\nSubject: ", 11);
write(pdes[1], dayname, strlen(dayname));
write(pdes[1], "'s Calendar\nPrecedence: bulk\n\n", 30);
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);
}