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1.29 ! otto 1: /* $OpenBSD: io.c,v 1.28 2004/12/10 15:31:01 mickey Exp $ */
1.1 millert 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.
1.24 millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 millert 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: #ifndef lint
33: static const char copyright[] =
34: "@(#) Copyright (c) 1989, 1993\n\
35: The Regents of the University of California. All rights reserved.\n";
36: #endif /* not lint */
37:
38: #ifndef lint
39: #if 0
40: static const char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94";
41: #else
1.29 ! otto 42: static const char rcsid[] = "$OpenBSD: io.c,v 1.28 2004/12/10 15:31:01 mickey Exp $";
1.1 millert 43: #endif
44: #endif /* not lint */
45:
46: #include <sys/param.h>
47: #include <sys/stat.h>
48: #include <sys/time.h>
49: #include <sys/types.h>
50: #include <sys/uio.h>
51: #include <sys/wait.h>
52:
53: #include <ctype.h>
54: #include <err.h>
55: #include <errno.h>
1.14 pjanzen 56: #include <fcntl.h>
1.1 millert 57: #include <locale.h>
58: #include <pwd.h>
59: #include <stdio.h>
60: #include <stdlib.h>
61: #include <string.h>
1.4 deraadt 62: #include <tzfile.h>
1.1 millert 63: #include <unistd.h>
64:
65: #include "pathnames.h"
66: #include "calendar.h"
67:
68:
69: struct iovec header[] = {
70: {"From: ", 6},
71: {NULL, 0},
72: {" (Reminder Service)\nTo: ", 24},
73: {NULL, 0},
74: {"\nSubject: ", 10},
75: {NULL, 0},
76: {"'s Calendar\nPrecedence: bulk\n\n", 30},
77: };
78:
79:
80: void
1.20 vincent 81: cal(void)
1.1 millert 82: {
1.19 mpech 83: int printing;
84: char *p;
1.1 millert 85: FILE *fp;
1.16 mickey 86: int ch, l, i, bodun = 0, bodun_maybe = 0;
1.1 millert 87: int var;
1.17 mickey 88: char buf[2048 + 1], *prefix = NULL;
1.6 pjanzen 89: struct event *events, *cur_evt, *ev1, *tmp;
1.5 pjanzen 90: struct match *m;
1.23 grange 91: size_t nlen;
1.1 millert 92:
1.5 pjanzen 93: events = NULL;
94: cur_evt = NULL;
1.1 millert 95: if ((fp = opencal()) == NULL)
96: return;
97: for (printing = 0; fgets(buf, sizeof(buf), stdin) != NULL;) {
98: if ((p = strchr(buf, '\n')) != NULL)
99: *p = '\0';
100: else
101: while ((ch = getchar()) != '\n' && ch != EOF);
1.10 deraadt 102: for (l = strlen(buf); l > 0 && isspace(buf[l - 1]); l--)
1.1 millert 103: ;
104: buf[l] = '\0';
105: if (buf[0] == '\0')
106: continue;
107: if (strncmp(buf, "LANG=", 5) == 0) {
108: (void) setlocale(LC_ALL, buf + 5);
109: setnnames();
1.15 mickey 110: if (!strcmp(buf + 5, "ru_RU.KOI8-R") ||
111: !strcmp(buf + 5, "uk_UA.KOI8-U") ||
112: !strcmp(buf + 5, "by_BY.KOI8-B")) {
113: bodun_maybe++;
1.17 mickey 114: bodun = 0;
115: if (prefix)
116: free(prefix);
117: prefix = NULL;
1.15 mickey 118: } else
119: bodun_maybe = 0;
1.1 millert 120: continue;
1.27 mickey 121: } else if (strncmp(buf, "CALENDAR=", 9) == 0) {
122: char *ep;
123:
124: if (buf[9] == '\0')
125: calendar = 0;
126: else if (!strcasecmp(buf + 9, "julian")) {
127: calendar = JULIAN;
128: errno = 0;
129: julian = strtoul(buf + 14, &ep, 10);
130: if (buf[0] == '\0' || *ep != '\0')
131: julian = 13;
132: if ((errno == ERANGE && julian == ULONG_MAX) ||
133: julian > 14)
134: errx(1, "Julian calendar offset is too large");
135: } else if (!strcasecmp(buf + 9, "gregorian"))
136: calendar = GREGORIAN;
137: else if (!strcasecmp(buf + 9, "lunar"))
138: calendar = LUNAR;
139: } else if (bodun_maybe && strncmp(buf, "BODUN=", 6) == 0) {
1.15 mickey 140: bodun++;
1.17 mickey 141: if (prefix)
142: free(prefix);
143: if ((prefix = strdup(buf + 6)) == NULL)
144: err(1, NULL);
1.27 mickey 145: continue;
1.17 mickey 146: }
1.6 pjanzen 147: /* User defined names for special events */
148: if ((p = strchr(buf, '='))) {
149: for (i = 0; i < NUMEV; i++) {
150: if (strncasecmp(buf, spev[i].name, spev[i].nlen) == 0 &&
151: (p - buf == spev[i].nlen) && buf[spev[i].nlen + 1]) {
152: p++;
153: if (spev[i].uname != NULL)
154: free(spev[i].uname);
155: if ((spev[i].uname = strdup(p)) == NULL)
1.11 pjanzen 156: err(1, NULL);
1.6 pjanzen 157: spev[i].ulen = strlen(p);
158: i = NUMEV + 1;
159: }
160: }
161: if (i > NUMEV)
1.1 millert 162: continue;
163: }
164: if (buf[0] != '\t') {
1.15 mickey 165: printing = (m = isnow(buf, bodun)) ? 1 : 0;
1.6 pjanzen 166: if ((p = strchr(buf, '\t')) == NULL) {
167: printing = 0;
1.1 millert 168: continue;
1.6 pjanzen 169: }
1.5 pjanzen 170: /* Need the following to catch hardwired "variable"
171: * dates */
1.1 millert 172: if (p > buf && p[-1] == '*')
173: var = 1;
1.5 pjanzen 174: else
175: var = 0;
1.1 millert 176: if (printing) {
1.5 pjanzen 177: struct match *foo;
178:
1.6 pjanzen 179: ev1 = NULL;
1.5 pjanzen 180: while (m) {
181: cur_evt = (struct event *) malloc(sizeof(struct event));
182: if (cur_evt == NULL)
1.11 pjanzen 183: err(1, NULL);
1.1 millert 184:
1.6 pjanzen 185: cur_evt->when = m->when;
186: snprintf(cur_evt->print_date,
187: sizeof(cur_evt->print_date), "%s%c",
188: m->print_date, (var + m->var) ? '*' : ' ');
189: if (ev1) {
190: cur_evt->desc = ev1->desc;
191: cur_evt->ldesc = NULL;
192: } else {
1.17 mickey 193: if (m->bodun && prefix) {
194: int l1 = strlen(prefix);
1.15 mickey 195: int l2 = strlen(p);
1.22 deraadt 196: int len = l1 + l2 + 2;
1.15 mickey 197: if ((cur_evt->ldesc =
1.22 deraadt 198: malloc(len)) == NULL)
1.26 tom 199: err(1, NULL);
1.22 deraadt 200: snprintf(cur_evt->ldesc, len,
1.17 mickey 201: "\t%s %s", prefix, p + 1);
1.15 mickey 202: } else if ((cur_evt->ldesc =
203: strdup(p)) == NULL)
1.11 pjanzen 204: err(1, NULL);
1.6 pjanzen 205: cur_evt->desc = &(cur_evt->ldesc);
206: ev1 = cur_evt;
1.5 pjanzen 207: }
208: insert(&events, cur_evt);
209: foo = m;
210: m = m->next;
211: free(foo);
212: }
1.1 millert 213: }
214: }
1.5 pjanzen 215: else if (printing) {
1.23 grange 216: nlen = strlen(ev1->ldesc) + strlen(buf) + 2;
217: if ((ev1->ldesc = realloc(ev1->ldesc, nlen)) == NULL)
1.11 pjanzen 218: err(1, NULL);
1.23 grange 219: snprintf(ev1->ldesc, nlen, "%s\n%s", ev1->ldesc, buf);
1.5 pjanzen 220: }
221: }
222: tmp = events;
223: while (tmp) {
1.6 pjanzen 224: (void)fprintf(fp, "%s%s\n", tmp->print_date, *(tmp->desc));
225: tmp = tmp->next;
226: }
227: tmp = events;
228: while (tmp) {
1.5 pjanzen 229: events = tmp;
1.6 pjanzen 230: if (tmp->ldesc)
231: free(tmp->ldesc);
1.5 pjanzen 232: tmp = tmp->next;
233: free(events);
1.1 millert 234: }
235: closecal(fp);
236: }
237:
238: int
239: getfield(p, endp, flags)
240: char *p, **endp;
241: int *flags;
242: {
1.6 pjanzen 243: int val, var, i;
1.1 millert 244: char *start, savech;
245:
1.8 pjanzen 246: for (; !isdigit(*p) && !isalpha(*p) && *p != '*' && *p != '\t'; ++p)
1.1 millert 247: ;
1.6 pjanzen 248: if (*p == '*') { /* `*' is every month */
1.1 millert 249: *flags |= F_ISMONTH;
250: *endp = p+1;
1.6 pjanzen 251: return (-1); /* means 'every month' */
1.1 millert 252: }
253: if (isdigit(*p)) {
254: val = strtol(p, &p, 10); /* if 0, it's failure */
255: for (; !isdigit(*p) && !isalpha(*p) && *p != '*'; ++p)
256: ;
257: *endp = p;
258: return (val);
259: }
260: for (start = p; isalpha(*++p);)
261: ;
262:
263: /* Sunday-1 */
264: if (*p == '+' || *p == '-')
265: for(; isdigit(*++p);)
266: ;
267:
268: savech = *p;
269: *p = '\0';
270:
271: /* Month */
272: if ((val = getmonth(start)) != 0)
273: *flags |= F_ISMONTH;
274:
275: /* Day */
276: else if ((val = getday(start)) != 0) {
277: *flags |= F_ISDAY;
278:
279: /* variable weekday */
280: if ((var = getdayvar(start)) != 0) {
1.6 pjanzen 281: if (var <= 5 && var >= -4)
1.1 millert 282: val += var * 10;
283: #ifdef DEBUG
284: printf("var: %d\n", var);
285: #endif
286: }
287: }
288:
1.6 pjanzen 289: /* Try specials (Easter, Paskha, ...) */
1.1 millert 290: else {
1.6 pjanzen 291: for (i = 0; i < NUMEV; i++) {
292: if (strncasecmp(start, spev[i].name, spev[i].nlen) == 0) {
293: start += spev[i].nlen;
294: val = i + 1;
295: i = NUMEV + 1;
296: } else if (spev[i].uname != NULL &&
297: strncasecmp(start, spev[i].uname, spev[i].ulen) == 0) {
298: start += spev[i].ulen;
299: val = i + 1;
300: i = NUMEV + 1;
301: }
302: }
303: if (i > NUMEV) {
304: switch(*start) {
305: case '-':
306: case '+':
307: var = atoi(start);
308: if (var > 365 || var < -365)
309: return (0); /* Someone is just being silly */
310: val += (NUMEV + 1) * var;
311: /* We add one to the matching event and multiply by
312: * (NUMEV + 1) so as not to return 0 if there's a match.
313: * val will overflow if there is an obscenely large
314: * number of special events. */
315: break;
316: }
317: *flags |= F_SPECIAL;
318: }
319: if (!(*flags & F_SPECIAL)) {
320: /* undefined rest */
321: *p = savech;
322: return (0);
323: }
1.1 millert 324: }
1.8 pjanzen 325: for (*p = savech; !isdigit(*p) && !isalpha(*p) && *p != '*' && *p != '\t'; ++p)
1.1 millert 326: ;
327: *endp = p;
328: return (val);
329: }
330:
1.10 deraadt 331:
1.1 millert 332: FILE *
1.20 vincent 333: opencal(void)
1.1 millert 334: {
1.20 vincent 335: int pdes[2], fdin;
336: struct stat st;
1.1 millert 337:
338: /* open up calendar file as stdin */
1.20 vincent 339: if ((fdin = open(calendarFile, O_RDONLY)) == -1 ||
340: fstat(fdin, &st) == -1 || !S_ISREG(st.st_mode)) {
1.13 pjanzen 341: if (!doall) {
1.9 millert 342: char *home = getenv("HOME");
343: if (home == NULL || *home == '\0')
344: errx(1, "cannot get home directory");
1.10 deraadt 345: if (!(chdir(home) == 0 &&
346: chdir(calendarHome) == 0 &&
1.14 pjanzen 347: (fdin = open(calendarFile, O_RDONLY)) != -1))
1.18 deraadt 348: errx(1, "no calendar file: ``%s'' or ``~/%s/%s''",
1.2 millert 349: calendarFile, calendarHome, calendarFile);
1.1 millert 350: }
351: }
1.20 vincent 352:
1.1 millert 353: if (pipe(pdes) < 0)
354: return (NULL);
355: switch (vfork()) {
356: case -1: /* error */
357: (void)close(pdes[0]);
358: (void)close(pdes[1]);
359: return (NULL);
360: case 0:
1.10 deraadt 361: dup2(fdin, STDIN_FILENO);
362: /* child -- set stdout to pipe input */
1.1 millert 363: if (pdes[1] != STDOUT_FILENO) {
364: (void)dup2(pdes[1], STDOUT_FILENO);
365: (void)close(pdes[1]);
366: }
367: (void)close(pdes[0]);
1.20 vincent 368: /*
369: * Set stderr to /dev/null. Necessary so that cron does not
1.13 pjanzen 370: * wait for cpp to finish if it's running calendar -a.
371: */
372: if (doall) {
373: int fderr;
374: fderr = open(_PATH_DEVNULL, O_WRONLY, 0);
375: if (fderr == -1)
376: _exit(0);
377: (void)dup2(fderr, STDERR_FILENO);
378: (void)close(fderr);
379: }
1.29 ! otto 380: execl(_PATH_CPP, "cpp", "-traditional", "-undef", "-U__GNUC__",
! 381: "-P", "-I.", _PATH_INCLUDE, (char *)NULL);
1.1 millert 382: warn(_PATH_CPP);
383: _exit(1);
384: }
385: /* parent -- set stdin to pipe output */
386: (void)dup2(pdes[0], STDIN_FILENO);
387: (void)close(pdes[0]);
388: (void)close(pdes[1]);
389:
390: /* not reading all calendar files, just set output to stdout */
391: if (!doall)
392: return (stdout);
393:
394: /* set output to a temporary file, so if no output don't send mail */
1.13 pjanzen 395: return(tmpfile());
1.1 millert 396: }
397:
398: void
399: closecal(fp)
400: FILE *fp;
401: {
402: struct stat sbuf;
403: int nread, pdes[2], status;
404: char buf[1024];
405:
406: if (!doall)
407: return;
408:
409: (void)rewind(fp);
410: if (fstat(fileno(fp), &sbuf) || !sbuf.st_size)
411: goto done;
412: if (pipe(pdes) < 0)
413: goto done;
414: switch (vfork()) {
415: case -1: /* error */
416: (void)close(pdes[0]);
417: (void)close(pdes[1]);
418: goto done;
419: case 0:
420: /* child -- set stdin to pipe output */
421: if (pdes[0] != STDIN_FILENO) {
422: (void)dup2(pdes[0], STDIN_FILENO);
423: (void)close(pdes[0]);
424: }
425: (void)close(pdes[1]);
426: execl(_PATH_SENDMAIL, "sendmail", "-i", "-t", "-F",
1.12 deraadt 427: "\"Reminder Service\"", (char *)NULL);
1.1 millert 428: warn(_PATH_SENDMAIL);
429: _exit(1);
430: }
431: /* parent -- write to pipe input */
432: (void)close(pdes[0]);
433:
434: header[1].iov_base = header[3].iov_base = pw->pw_name;
435: header[1].iov_len = header[3].iov_len = strlen(pw->pw_name);
436: writev(pdes[1], header, 7);
437: while ((nread = read(fileno(fp), buf, sizeof(buf))) > 0)
438: (void)write(pdes[1], buf, nread);
439: (void)close(pdes[1]);
440: done: (void)fclose(fp);
1.10 deraadt 441: while (wait(&status) >= 0)
442: ;
1.5 pjanzen 443: }
444:
445:
446: void
447: insert(head, cur_evt)
448: struct event **head;
449: struct event *cur_evt;
450: {
451: struct event *tmp, *tmp2;
452:
453: if (*head) {
454: /* Insert this one in order */
455: tmp = *head;
456: tmp2 = NULL;
457: while (tmp->next &&
458: tmp->when <= cur_evt->when) {
459: tmp2 = tmp;
460: tmp = tmp->next;
461: }
462: if (tmp->when > cur_evt->when) {
463: cur_evt->next = tmp;
464: if (tmp2)
465: tmp2->next = cur_evt;
466: else
467: *head = cur_evt;
468: } else {
469: cur_evt->next = tmp->next;
470: tmp->next = cur_evt;
471: }
472: } else {
473: *head = cur_evt;
474: cur_evt->next = NULL;
475: }
1.1 millert 476: }