Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/calendar/io.c	Lines:	0	223	0.0 %
Date:	2016-12-06	Branches:	0	226	0.0 %


/*	$OpenBSD: io.c,v 1.43 2015/12/08 19:04:50 mmcc Exp $	*/

/*
 * 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. 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.
 */

#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/wait.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

#include "pathnames.h"
#include "calendar.h"


struct iovec header[] = {
	{ "From: ", 6 },
	{ NULL, 0 },
	{ " (Reminder Service)\nTo: ", 24 },
	{ NULL, 0 },
	{ "\nSubject: ", 10 },
	{ NULL, 0 },
	{ "'s Calendar\nPrecedence: bulk\n",  29 },
	{ "Auto-Submitted: auto-generated\n\n", 32 },
};


void
cal(void)
{
	int ch, l, i, bodun = 0, bodun_maybe = 0, var, printing;
	struct event *events, *cur_evt, *ev1, *tmp;
	char buf[2048 + 1], *prefix = NULL, *p;
	struct match *m;
	FILE *fp;

	events = NULL;
	cur_evt = NULL;
	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(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();
			/* XXX remove KOI8 lines after 5.9 is out */
			if (!strcmp(buf + 5, "ru_RU.UTF-8") ||
			    !strcmp(buf + 5, "uk_UA.UTF-8") ||
			    !strcmp(buf + 5, "by_BY.UTF-8") ||
			    !strcmp(buf + 5, "ru_RU.KOI8-R") ||
			    !strcmp(buf + 5, "uk_UA.KOI8-U") ||
			    !strcmp(buf + 5, "by_BY.KOI8-B")) {
				bodun_maybe++;
				bodun = 0;
				free(prefix);
				prefix = NULL;
			} else
				bodun_maybe = 0;
			continue;
		} else if (strncmp(buf, "CALENDAR=", 9) == 0) {
			char *ep;

			if (buf[9] == '\0')
				calendar = 0;
			else if (!strcasecmp(buf + 9, "julian")) {
				calendar = JULIAN;
				errno = 0;
				julian = strtoul(buf + 14, &ep, 10);
				if (buf[0] == '\0' || *ep != '\0')
					julian = 13;
				if ((errno == ERANGE && julian == ULONG_MAX) ||
				    julian > 14)
					errx(1, "Julian calendar offset is too large");
			} else if (!strcasecmp(buf + 9, "gregorian"))
				calendar = GREGORIAN;
			else if (!strcasecmp(buf + 9, "lunar"))
				calendar = LUNAR;
		} else if (bodun_maybe && strncmp(buf, "BODUN=", 6) == 0) {
			bodun++;
			free(prefix);
			if ((prefix = strdup(buf + 6)) == NULL)
				err(1, NULL);
			continue;
		}
		/* User defined names for special events */
		if ((p = strchr(buf, '='))) {
			for (i = 0; i < NUMEV; i++) {
				if (strncasecmp(buf, spev[i].name,
				    spev[i].nlen) == 0 &&
				    (p - buf == spev[i].nlen) &&
				    buf[spev[i].nlen + 1]) {
					p++;
					free(spev[i].uname);
					if ((spev[i].uname = strdup(p)) == NULL)
						err(1, NULL);
					spev[i].ulen = strlen(p);
					i = NUMEV + 1;
				}
			}
			if (i > NUMEV)
				continue;
		}
		if (buf[0] != '\t') {
			printing = (m = isnow(buf, bodun)) ? 1 : 0;
			if ((p = strchr(buf, '\t')) == NULL) {
				printing = 0;
				continue;
			}
			/* Need the following to catch hardwired "variable"
			 * dates */
			if (p > buf && p[-1] == '*')
				var = 1;
			else
				var = 0;
			if (printing) {
				struct match *foo;

				ev1 = NULL;
				while (m) {
					cur_evt = malloc(sizeof(struct event));
					if (cur_evt == NULL)
						err(1, NULL);

					cur_evt->when = m->when;
					snprintf(cur_evt->print_date,
					    sizeof(cur_evt->print_date), "%s%c",
					    m->print_date, (var + m->var) ? '*' : ' ');
					if (ev1) {
						cur_evt->desc = ev1->desc;
						cur_evt->ldesc = NULL;
					} else {
						if (m->bodun && prefix) {
							if (asprintf(&cur_evt->ldesc,
							    "\t%s %s", prefix,
							    p + 1) == -1)
								err(1, NULL);
						} else if ((cur_evt->ldesc =
						    strdup(p)) == NULL)
							err(1, NULL);
						cur_evt->desc = &(cur_evt->ldesc);
						ev1 = cur_evt;
					}
					insert(&events, cur_evt);
					foo = m;
					m = m->next;
					free(foo);
				}
			}
		} else if (printing) {
			if (asprintf(&p, "%s\n%s", ev1->ldesc,
			    buf) == -1)
				err(1, NULL);
			free(ev1->ldesc);
			ev1->ldesc = p;
		}
	}
	tmp = events;
	while (tmp) {
		(void)fprintf(fp, "%s%s\n", tmp->print_date, *(tmp->desc));
		tmp = tmp->next;
	}
	tmp = events;
	while (tmp) {
		events = tmp;
		free(tmp->ldesc);
		tmp = tmp->next;
		free(events);
	}
	closecal(fp);
}

int
getfield(char *p, char **endp, int *flags)
{
	int val, var, i;
	char *start, savech;

	for (; !isdigit((unsigned char)*p) && !isalpha((unsigned char)*p) &&
	    *p != '*' && *p != '\t'; ++p)
		;
	if (*p == '*') {			/* `*' is every month */
		*flags |= F_ISMONTH;
		*endp = p+1;
		return (-1);	/* means 'every month' */
	}
	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
		}
	}

	/* Try specials (Easter, Paskha, ...) */
	else {
		for (i = 0; i < NUMEV; i++) {
			if (strncasecmp(start, spev[i].name, spev[i].nlen) == 0) {
				start += spev[i].nlen;
				val = i + 1;
				i = NUMEV + 1;
			} else if (spev[i].uname != NULL &&
			    strncasecmp(start, spev[i].uname, spev[i].ulen) == 0) {
				start += spev[i].ulen;
				val = i + 1;
				i = NUMEV + 1;
			}
		}
		if (i > NUMEV) {
			const char *errstr;

			switch (*start) {
			case '-':
			case '+':
				var = strtonum(start + 1, 0, 365, &errstr);
				if (errstr)
					return (0); /* Someone is just being silly */
				if (*start == '-')
					var = -var;
				val += (NUMEV + 1) * var;
				/* We add one to the matching event and multiply by
				 * (NUMEV + 1) so as not to return 0 if there's a match.
				 * val will overflow if there is an obscenely large
				 * number of special events. */
				break;
			}
			*flags |= F_SPECIAL;
		}
		if (!(*flags & F_SPECIAL)) {
			/* undefined rest */
			*p = savech;
			return (0);
		}
	}
	for (*p = savech; !isdigit((unsigned char)*p) &&
	    !isalpha((unsigned char)*p) && *p != '*' && *p != '\t'; ++p)
		;
	*endp = p;
	return (val);
}


FILE *
opencal(void)
{
	int pdes[2], fdin;
	struct stat st;

	/* open up calendar file as stdin */
	if ((fdin = open(calendarFile, O_RDONLY)) == -1 ||
	    fstat(fdin, &st) == -1 || !S_ISREG(st.st_mode)) {
		if (!doall) {
			char *home = getenv("HOME");
			if (home == NULL || *home == '\0')
				errx(1, "cannot get home directory");
			if (!(chdir(home) == 0 &&
			    chdir(calendarHome) == 0 &&
			    (fdin = open(calendarFile, O_RDONLY)) != -1))
				errx(1, "no calendar file: ``%s'' or ``~/%s/%s''",
				    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:
		dup2(fdin, STDIN_FILENO);
		/* child -- set stdout to pipe input */
		if (pdes[1] != STDOUT_FILENO) {
			(void)dup2(pdes[1], STDOUT_FILENO);
			(void)close(pdes[1]);
		}
		(void)close(pdes[0]);
		/*
		 * Set stderr to /dev/null.  Necessary so that cron does not
		 * wait for cpp to finish if it's running calendar -a.
		 */
		if (doall) {
			int fderr;
			fderr = open(_PATH_DEVNULL, O_WRONLY, 0);
			if (fderr == -1)
				_exit(0);
			(void)dup2(fderr, STDERR_FILENO);
			(void)close(fderr);
		}
		execl(_PATH_CPP, "cpp", "-traditional", "-undef", "-U__GNUC__",
		    "-P", "-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 */
	return(tmpfile());
}

void
closecal(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\"", (char *)NULL);
		warn(_PATH_SENDMAIL);
		_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, 8);
	while ((nread = read(fileno(fp), buf, sizeof(buf))) > 0)
		(void)write(pdes[1], buf, nread);
	(void)close(pdes[1]);
done:	(void)fclose(fp);
	while (wait(&status) >= 0)
		;
}


void
insert(struct event **head, struct event *cur_evt)
{
	struct event *tmp, *tmp2;

	if (*head) {
		/* Insert this one in order */
		tmp = *head;
		tmp2 = NULL;
		while (tmp->next &&
		    tmp->when <= cur_evt->when) {
			tmp2 = tmp;
			tmp = tmp->next;
		}
		if (tmp->when > cur_evt->when) {
			cur_evt->next = tmp;
			if (tmp2)
				tmp2->next = cur_evt;
			else
				*head = cur_evt;
		} else {
			cur_evt->next = tmp->next;
			tmp->next = cur_evt;
		}
	} else {
		*head = cur_evt;
		cur_evt->next = NULL;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: io.c,v 1.43 2015/12/08 19:04:50 mmcc Exp $ */
2
3			/*
4			* Copyright (c) 1989, 1993, 1994
5			* The Regents of the University of California. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			* 3. Neither the name of the University nor the names of its contributors
16			* may be used to endorse or promote products derived from this software
17			* without specific prior written permission.
18			*
19			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29			* SUCH DAMAGE.
30			*/
31
32			#include <sys/stat.h>
33			#include <sys/time.h>
34			#include <sys/types.h>
35			#include <sys/uio.h>
36			#include <sys/wait.h>
37
38			#include <ctype.h>
39			#include <err.h>
40			#include <errno.h>
41			#include <fcntl.h>
42			#include <locale.h>
43			#include <pwd.h>
44			#include <stdio.h>
45			#include <stdlib.h>
46			#include <string.h>
47			#include <unistd.h>
48			#include <limits.h>
49
50			#include "pathnames.h"
51			#include "calendar.h"
52
53
54			struct iovec header[] = {
55			{ "From: ", 6 },
56			{ NULL, 0 },
57			{ " (Reminder Service)\nTo: ", 24 },
58			{ NULL, 0 },
59			{ "\nSubject: ", 10 },
60			{ NULL, 0 },
61			{ "'s Calendar\nPrecedence: bulk\n", 29 },
62			{ "Auto-Submitted: auto-generated\n\n", 32 },
63			};
64
65
66			void
67			cal(void)
68			{
69			int ch, l, i, bodun = 0, bodun_maybe = 0, var, printing;
70			struct event events, cur_evt, ev1, tmp;
71			char buf[2048 + 1], prefix = NULL, p;
72			struct match *m;
73			FILE *fp;
74
75			events = NULL;
76			cur_evt = NULL;
77			if ((fp = opencal()) == NULL)
78			return;
79			for (printing = 0; fgets(buf, sizeof(buf), stdin) != NULL;) {
80			if ((p = strchr(buf, '\n')) != NULL)
81			*p = '\0';
82			else
83			while ((ch = getchar()) != '\n' && ch != EOF);
84			for (l = strlen(buf); l > 0 && isspace(buf[l - 1]); l--)
85			;
86			buf[l] = '\0';
87			if (buf[0] == '\0')
88			continue;
89			if (strncmp(buf, "LANG=", 5) == 0) {
90			(void) setlocale(LC_ALL, buf + 5);
91			setnnames();
92			/* XXX remove KOI8 lines after 5.9 is out */
93			if (!strcmp(buf + 5, "ru_RU.UTF-8") \|\|
94			!strcmp(buf + 5, "uk_UA.UTF-8") \|\|
95			!strcmp(buf + 5, "by_BY.UTF-8") \|\|
96			!strcmp(buf + 5, "ru_RU.KOI8-R") \|\|
97			!strcmp(buf + 5, "uk_UA.KOI8-U") \|\|
98			!strcmp(buf + 5, "by_BY.KOI8-B")) {
99			bodun_maybe++;
100			bodun = 0;
101			free(prefix);
102			prefix = NULL;
103			} else
104			bodun_maybe = 0;
105			continue;
106			} else if (strncmp(buf, "CALENDAR=", 9) == 0) {
107			char *ep;
108
109			if (buf[9] == '\0')
110			calendar = 0;
111			else if (!strcasecmp(buf + 9, "julian")) {
112			calendar = JULIAN;
113			errno = 0;
114			julian = strtoul(buf + 14, &ep, 10);
115			if (buf[0] == '\0' \|\| *ep != '\0')
116			julian = 13;
117			if ((errno == ERANGE && julian == ULONG_MAX) \|\|
118			julian > 14)
119			errx(1, "Julian calendar offset is too large");
120			} else if (!strcasecmp(buf + 9, "gregorian"))
121			calendar = GREGORIAN;
122			else if (!strcasecmp(buf + 9, "lunar"))
123			calendar = LUNAR;
124			} else if (bodun_maybe && strncmp(buf, "BODUN=", 6) == 0) {
125			bodun++;
126			free(prefix);
127			if ((prefix = strdup(buf + 6)) == NULL)
128			err(1, NULL);
129			continue;
130			}
131			/* User defined names for special events */
132			if ((p = strchr(buf, '='))) {
133			for (i = 0; i < NUMEV; i++) {
134			if (strncasecmp(buf, spev[i].name,
135			spev[i].nlen) == 0 &&
136			(p - buf == spev[i].nlen) &&
137			buf[spev[i].nlen + 1]) {
138			p++;
139			free(spev[i].uname);
140			if ((spev[i].uname = strdup(p)) == NULL)
141			err(1, NULL);
142			spev[i].ulen = strlen(p);
143			i = NUMEV + 1;
144			}
145			}
146			if (i > NUMEV)
147			continue;
148			}
149			if (buf[0] != '\t') {
150			printing = (m = isnow(buf, bodun)) ? 1 : 0;
151			if ((p = strchr(buf, '\t')) == NULL) {
152			printing = 0;
153			continue;
154			}
155			/* Need the following to catch hardwired "variable"
156			* dates */
157			if (p > buf && p[-1] == '*')
158			var = 1;
159			else
160			var = 0;
161			if (printing) {
162			struct match *foo;
163
164			ev1 = NULL;
165			while (m) {
166			cur_evt = malloc(sizeof(struct event));
167			if (cur_evt == NULL)
168			err(1, NULL);
169
170			cur_evt->when = m->when;
171			snprintf(cur_evt->print_date,
172			sizeof(cur_evt->print_date), "%s%c",
173			m->print_date, (var + m->var) ? '*' : ' ');
174			if (ev1) {
175			cur_evt->desc = ev1->desc;
176			cur_evt->ldesc = NULL;
177			} else {
178			if (m->bodun && prefix) {
179			if (asprintf(&cur_evt->ldesc,
180			"\t%s %s", prefix,
181			p + 1) == -1)
182			err(1, NULL);
183			} else if ((cur_evt->ldesc =
184			strdup(p)) == NULL)
185			err(1, NULL);
186			cur_evt->desc = &(cur_evt->ldesc);
187			ev1 = cur_evt;
188			}
189			insert(&events, cur_evt);
190			foo = m;
191			m = m->next;
192			free(foo);
193			}
194			}
195			} else if (printing) {
196			if (asprintf(&p, "%s\n%s", ev1->ldesc,
197			buf) == -1)
198			err(1, NULL);
199			free(ev1->ldesc);
200			ev1->ldesc = p;
201			}
202			}
203			tmp = events;
204			while (tmp) {
205			(void)fprintf(fp, "%s%s\n", tmp->print_date, *(tmp->desc));
206			tmp = tmp->next;
207			}
208			tmp = events;
209			while (tmp) {
210			events = tmp;
211			free(tmp->ldesc);
212			tmp = tmp->next;
213			free(events);
214			}
215			closecal(fp);
216			}
217
218			int
219			getfield(char p, char endp, int flags)
220			{
221			int val, var, i;
222			char *start, savech;
223
224			for (; !isdigit((unsigned char)p) && !isalpha((unsigned char)p) &&
225			p != '' && *p != '\t'; ++p)
226			;
227			if (p == '') { /* `' is every month /
228			*flags \|= F_ISMONTH;
229			*endp = p+1;
230			return (-1); /* means 'every month' */
231			}
232			if (isdigit((unsigned char)*p)) {
233			val = strtol(p, &p, 10); /* if 0, it's failure */
234			for (; !isdigit((unsigned char)*p) &&
235			!isalpha((unsigned char)p) && p != '*'; ++p)
236			;
237			*endp = p;
238			return (val);
239			}
240			for (start = p; isalpha((unsigned char)*++p);)
241			;
242
243			/* Sunday-1 */
244			if (p == '+' \|\| p == '-')
245			for(; isdigit((unsigned char)*++p); )
246			;
247
248			savech = *p;
249			*p = '\0';
250
251			/* Month */
252			if ((val = getmonth(start)) != 0)
253			*flags \|= F_ISMONTH;
254
255			/* Day */
256			else if ((val = getday(start)) != 0) {
257			*flags \|= F_ISDAY;
258
259			/* variable weekday */
260			if ((var = getdayvar(start)) != 0) {
261			if (var <= 5 && var >= -4)
262			val += var * 10;
263			#ifdef DEBUG
264			printf("var: %d\n", var);
265			#endif
266			}
267			}
268
269			/* Try specials (Easter, Paskha, ...) */
270			else {
271			for (i = 0; i < NUMEV; i++) {
272			if (strncasecmp(start, spev[i].name, spev[i].nlen) == 0) {
273			start += spev[i].nlen;
274			val = i + 1;
275			i = NUMEV + 1;
276			} else if (spev[i].uname != NULL &&
277			strncasecmp(start, spev[i].uname, spev[i].ulen) == 0) {
278			start += spev[i].ulen;
279			val = i + 1;
280			i = NUMEV + 1;
281			}
282			}
283			if (i > NUMEV) {
284			const char *errstr;
285
286			switch (*start) {
287			case '-':
288			case '+':
289			var = strtonum(start + 1, 0, 365, &errstr);
290			if (errstr)
291			return (0); /* Someone is just being silly */
292			if (*start == '-')
293			var = -var;
294			val += (NUMEV + 1) * var;
295			/* We add one to the matching event and multiply by
296			* (NUMEV + 1) so as not to return 0 if there's a match.
297			* val will overflow if there is an obscenely large
298			* number of special events. */
299			break;
300			}
301			*flags \|= F_SPECIAL;
302			}
303			if (!(*flags & F_SPECIAL)) {
304			/* undefined rest */
305			*p = savech;
306			return (0);
307			}
308			}
309			for (p = savech; !isdigit((unsigned char)p) &&
310			!isalpha((unsigned char)p) && p != '' && p != '\t'; ++p)
311			;
312			*endp = p;
313			return (val);
314			}
315
316
317			FILE *
318			opencal(void)
319			{
320			int pdes[2], fdin;
321			struct stat st;
322
323			/* open up calendar file as stdin */
324			if ((fdin = open(calendarFile, O_RDONLY)) == -1 \|\|
325			fstat(fdin, &st) == -1 \|\| !S_ISREG(st.st_mode)) {
326			if (!doall) {
327			char *home = getenv("HOME");
328			if (home == NULL \|\| *home == '\0')
329			errx(1, "cannot get home directory");
330			if (!(chdir(home) == 0 &&
331			chdir(calendarHome) == 0 &&
332			(fdin = open(calendarFile, O_RDONLY)) != -1))
333			errx(1, "no calendar file: ``%s'' or ``~/%s/%s''",
334			calendarFile, calendarHome, calendarFile);
335			}
336			}
337
338			if (pipe(pdes) < 0)
339			return (NULL);
340			switch (vfork()) {
341			case -1: /* error */
342			(void)close(pdes[0]);
343			(void)close(pdes[1]);
344			return (NULL);
345			case 0:
346			dup2(fdin, STDIN_FILENO);
347			/* child -- set stdout to pipe input */
348			if (pdes[1] != STDOUT_FILENO) {
349			(void)dup2(pdes[1], STDOUT_FILENO);
350			(void)close(pdes[1]);
351			}
352			(void)close(pdes[0]);
353			/*
354			* Set stderr to /dev/null. Necessary so that cron does not
355			* wait for cpp to finish if it's running calendar -a.
356			*/
357			if (doall) {
358			int fderr;
359			fderr = open(_PATH_DEVNULL, O_WRONLY, 0);
360			if (fderr == -1)
361			_exit(0);
362			(void)dup2(fderr, STDERR_FILENO);
363			(void)close(fderr);
364			}
365			execl(_PATH_CPP, "cpp", "-traditional", "-undef", "-U__GNUC__",
366			"-P", "-I.", _PATH_INCLUDE, (char *)NULL);
367			warn(_PATH_CPP);
368			_exit(1);
369			}
370			/* parent -- set stdin to pipe output */
371			(void)dup2(pdes[0], STDIN_FILENO);
372			(void)close(pdes[0]);
373			(void)close(pdes[1]);
374
375			/* not reading all calendar files, just set output to stdout */
376			if (!doall)
377			return (stdout);
378
379			/* set output to a temporary file, so if no output don't send mail */
380			return(tmpfile());
381			}
382
383			void
384			closecal(FILE *fp)
385			{
386			struct stat sbuf;
387			int nread, pdes[2], status;
388			char buf[1024];
389
390			if (!doall)
391			return;
392
393			(void)rewind(fp);
394			if (fstat(fileno(fp), &sbuf) \|\| !sbuf.st_size)
395			goto done;
396			if (pipe(pdes) < 0)
397			goto done;
398			switch (vfork()) {
399			case -1: /* error */
400			(void)close(pdes[0]);
401			(void)close(pdes[1]);
402			goto done;
403			case 0:
404			/* child -- set stdin to pipe output */
405			if (pdes[0] != STDIN_FILENO) {
406			(void)dup2(pdes[0], STDIN_FILENO);
407			(void)close(pdes[0]);
408			}
409			(void)close(pdes[1]);
410			execl(_PATH_SENDMAIL, "sendmail", "-i", "-t", "-F",
411			"\"Reminder Service\"", (char *)NULL);
412			warn(_PATH_SENDMAIL);
413			_exit(1);
414			}
415			/* parent -- write to pipe input */
416			(void)close(pdes[0]);
417
418			header[1].iov_base = header[3].iov_base = pw->pw_name;
419			header[1].iov_len = header[3].iov_len = strlen(pw->pw_name);
420			writev(pdes[1], header, 8);
421			while ((nread = read(fileno(fp), buf, sizeof(buf))) > 0)
422			(void)write(pdes[1], buf, nread);
423			(void)close(pdes[1]);
424			done: (void)fclose(fp);
425			while (wait(&status) >= 0)
426			;
427			}
428
429
430			void
431			insert(struct event *head, struct event cur_evt)
432			{
433			struct event tmp, tmp2;
434
435			if (*head) {
436			/* Insert this one in order */
437			tmp = *head;
438			tmp2 = NULL;
439			while (tmp->next &&
440			tmp->when <= cur_evt->when) {
441			tmp2 = tmp;
442			tmp = tmp->next;
443			}
444			if (tmp->when > cur_evt->when) {
445			cur_evt->next = tmp;
446			if (tmp2)
447			tmp2->next = cur_evt;
448			else
449			*head = cur_evt;
450			} else {
451			cur_evt->next = tmp->next;
452			tmp->next = cur_evt;
453			}
454			} else {
455			*head = cur_evt;
456			cur_evt->next = NULL;
457			}
458			}