diff options
author | wosch <wosch@FreeBSD.org> | 1996-02-02 06:02:41 +0000 |
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committer | wosch <wosch@FreeBSD.org> | 1996-02-02 06:02:41 +0000 |
commit | f351e4d35ed659e670f8cf3293f0d200f3a55f4a (patch) | |
tree | ec2d23fe6eecf6aeec0846f3362a3c6b9b008c8d /usr.bin/calendar/io.c | |
parent | 358b3e4f0569f8e4483911ea62556cdc998a72a5 (diff) | |
download | FreeBSD-src-f351e4d35ed659e670f8cf3293f0d200f3a55f4a.zip FreeBSD-src-f351e4d35ed659e670f8cf3293f0d200f3a55f4a.tar.gz |
- handle events that move around from year to year, i.e.,
``the last Monday in April'
- handle easter
new options
-f calendarfile
-A days
-B days
Calendar HOME directory ~/.calendar
don't sent mail if ~/.calendar/nomail exist
Diffstat (limited to 'usr.bin/calendar/io.c')
-rw-r--r-- | usr.bin/calendar/io.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/usr.bin/calendar/io.c b/usr.bin/calendar/io.c new file mode 100644 index 0000000..46302de --- /dev/null +++ b/usr.bin/calendar/io.c @@ -0,0 +1,271 @@ +/* + * 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 char copyright[] = +"@(#) Copyright (c) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static 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 <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 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; + 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); + if (buf[0] == '\0') + continue; + if (buf[0] != '\t') + printing = isnow(buf) ? 1 : 0; + if (printing) + (void)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(*p) && !isalpha(*p) && *p != '*'; ++p); + if (*p == '*') { /* `*' is current month */ + *flags |= F_ISMONTH; + *endp = p+1; + return (tp->tm_mon + 1); + } + if (isdigit(*p)) { + val = strtol(p, &p, 10); /* if 0, it's failure */ + for (; !isdigit(*p) && !isalpha(*p) && *p != '*'; ++p); + *endp = p; + return (val); + } + for (start = p; isalpha(*++p);); + + /* Sunday-1 */ + if (*p == '+' || *p == '-') + for(; isdigit(*++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; + + /* undefined rest */ + else { + *p = savech; + return (0); + } + for (*p = savech; !isdigit(*p) && !isalpha(*p) && *p != '*'; ++p); + *endp = p; + return (val); +} + +char path[MAXPATHLEN + 1]; + +FILE * +opencal() +{ + 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]); + 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; +{ + 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]); + execl(_PATH_SENDMAIL, "sendmail", "-i", "-t", "-F", + "\"Reminder Service\"", "-f", "root", 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); +} + |