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1.13 ! kristaps 1: /* $Id: cgi.c,v 1.12 2011/12/07 13:00:40 kristaps Exp $ */
1.6 kristaps 2: /*
3: * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
21: #include <sys/param.h>
22: #include <sys/wait.h>
23:
1.1 kristaps 24: #include <assert.h>
1.6 kristaps 25: #include <ctype.h>
26: #include <errno.h>
1.1 kristaps 27: #include <fcntl.h>
1.6 kristaps 28: #include <limits.h>
1.1 kristaps 29: #include <regex.h>
30: #include <stdio.h>
31: #include <stdarg.h>
1.5 kristaps 32: #include <stdint.h>
1.1 kristaps 33: #include <stdlib.h>
34: #include <string.h>
1.6 kristaps 35: #include <unistd.h>
1.1 kristaps 36:
1.6 kristaps 37: #include "apropos_db.h"
1.4 schwarze 38: #include "mandoc.h"
1.8 kristaps 39: #include "mdoc.h"
40: #include "man.h"
41: #include "main.h"
1.6 kristaps 42: #include "manpath.h"
43:
44: #ifdef __linux__
45: # include <db_185.h>
46: #else
47: # include <db.h>
48: #endif
1.1 kristaps 49:
50: enum page {
51: PAGE_INDEX,
52: PAGE_SEARCH,
1.6 kristaps 53: PAGE_SHOW,
1.1 kristaps 54: PAGE__MAX
55: };
56:
57: struct kval {
58: char *key;
59: char *val;
60: };
61:
62: struct req {
1.6 kristaps 63: struct kval *fields;
1.1 kristaps 64: size_t fieldsz;
65: enum page page;
66: };
67:
1.6 kristaps 68: static int atou(const char *, unsigned *);
1.9 kristaps 69: static void catman(const char *);
1.8 kristaps 70: static void format(const char *);
1.6 kristaps 71: static void html_print(const char *);
1.10 kristaps 72: static void html_putchar(char);
1.1 kristaps 73: static int kval_decode(char *);
74: static void kval_parse(struct kval **, size_t *, char *);
75: static void kval_free(struct kval *, size_t);
1.6 kristaps 76: static void pg_index(const struct manpaths *,
77: const struct req *, char *);
78: static void pg_search(const struct manpaths *,
79: const struct req *, char *);
80: static void pg_show(const struct manpaths *,
81: const struct req *, char *);
1.7 kristaps 82: static void resp_bad(void);
1.6 kristaps 83: static void resp_baddb(void);
1.10 kristaps 84: static void resp_error400(void);
85: static void resp_error404(const char *);
1.6 kristaps 86: static void resp_begin_html(int, const char *);
87: static void resp_begin_http(int, const char *);
88: static void resp_end_html(void);
89: static void resp_index(const struct req *);
90: static void resp_search(struct res *, size_t, void *);
91: static void resp_searchform(const struct req *);
92:
93: static const char *progname;
1.7 kristaps 94: static const char *cache;
1.6 kristaps 95: static const char *host;
1.1 kristaps 96:
97: static const char * const pages[PAGE__MAX] = {
98: "index", /* PAGE_INDEX */
99: "search", /* PAGE_SEARCH */
1.6 kristaps 100: "show", /* PAGE_SHOW */
1.1 kristaps 101: };
102:
1.6 kristaps 103: /*
104: * This is just OpenBSD's strtol(3) suggestion.
105: * I use it instead of strtonum(3) for portability's sake.
106: */
107: static int
108: atou(const char *buf, unsigned *v)
109: {
110: char *ep;
111: long lval;
112:
113: errno = 0;
114: lval = strtol(buf, &ep, 10);
115: if (buf[0] == '\0' || *ep != '\0')
116: return(0);
117: if ((errno == ERANGE && (lval == LONG_MAX ||
118: lval == LONG_MIN)) ||
119: (lval > UINT_MAX || lval < 0))
120: return(0);
121:
122: *v = (unsigned int)lval;
123: return(1);
124: }
1.1 kristaps 125:
1.10 kristaps 126: static void
127: html_putchar(char c)
128: {
129:
130: switch (c) {
131: case ('"'):
132: printf(""e;");
133: break;
134: case ('&'):
135: printf("&");
136: break;
137: case ('>'):
138: printf(">");
139: break;
140: case ('<'):
141: printf("<");
142: break;
143: default:
144: putchar((unsigned char)c);
145: break;
146: }
147: }
148:
1.6 kristaps 149: /*
150: * Print a word, escaping HTML along the way.
151: * This will pass non-ASCII straight to output: be warned!
152: */
1.1 kristaps 153: static void
1.6 kristaps 154: html_print(const char *p)
1.1 kristaps 155: {
1.6 kristaps 156:
157: if (NULL == p)
158: return;
1.1 kristaps 159: while ('\0' != *p)
1.10 kristaps 160: html_putchar(*p++);
1.1 kristaps 161: }
162:
163: static void
164: kval_free(struct kval *p, size_t sz)
165: {
166: int i;
167:
168: for (i = 0; i < (int)sz; i++) {
169: free(p[i].key);
170: free(p[i].val);
171: }
172: free(p);
173: }
174:
175: /*
176: * Parse out key-value pairs from an HTTP request variable.
1.6 kristaps 177: * This can be either a cookie or a POST/GET string, although man.cgi
178: * uses only GET for simplicity.
1.1 kristaps 179: */
180: static void
181: kval_parse(struct kval **kv, size_t *kvsz, char *p)
182: {
183: char *key, *val;
184: size_t sz, cur;
185:
186: cur = 0;
187:
188: while (p && '\0' != *p) {
189: while (' ' == *p)
190: p++;
191:
192: key = p;
193: val = NULL;
194:
195: if (NULL != (p = strchr(p, '='))) {
196: *p++ = '\0';
197: val = p;
198:
199: sz = strcspn(p, ";&");
200: /* LINTED */
201: p += sz;
202:
203: if ('\0' != *p)
204: *p++ = '\0';
205: } else {
206: p = key;
207: sz = strcspn(p, ";&");
208: /* LINTED */
209: p += sz;
210:
211: if ('\0' != *p)
212: p++;
213: continue;
214: }
215:
216: if ('\0' == *key || '\0' == *val)
217: continue;
218:
219: /* Just abort handling. */
220:
221: if ( ! kval_decode(key))
222: return;
223: if ( ! kval_decode(val))
224: return;
225:
226: if (*kvsz + 1 >= cur) {
227: cur++;
228: *kv = mandoc_realloc
229: (*kv, cur * sizeof(struct kval));
230: }
231:
232: (*kv)[(int)*kvsz].key = mandoc_strdup(key);
233: (*kv)[(int)*kvsz].val = mandoc_strdup(val);
234: (*kvsz)++;
235: }
236: }
237:
238: /*
1.6 kristaps 239: * HTTP-decode a string. The standard explanation is that this turns
240: * "%4e+foo" into "n foo" in the regular way. This is done in-place
241: * over the allocated string.
1.1 kristaps 242: */
243: static int
244: kval_decode(char *p)
245: {
246: char hex[3];
247: int c;
248:
249: hex[2] = '\0';
250:
251: for ( ; '\0' != *p; p++) {
252: if ('%' == *p) {
253: if ('\0' == (hex[0] = *(p + 1)))
254: return(0);
255: if ('\0' == (hex[1] = *(p + 2)))
256: return(0);
257: if (1 != sscanf(hex, "%x", &c))
258: return(0);
259: if ('\0' == c)
260: return(0);
261:
262: *p = (char)c;
263: memmove(p + 1, p + 3, strlen(p + 3) + 1);
264: } else
265: *p = '+' == *p ? ' ' : *p;
266: }
267:
268: *p = '\0';
269: return(1);
270: }
271:
1.6 kristaps 272: static void
273: resp_begin_http(int code, const char *msg)
274: {
275:
276: if (200 != code)
277: printf("Status: %d %s\n", code, msg);
278:
279: puts("Content-Type: text/html; charset=utf-8" "\n"
280: "Cache-Control: no-cache" "\n"
281: "Pragma: no-cache" "\n"
282: "");
283:
284: fflush(stdout);
285: }
286:
287: static void
288: resp_begin_html(int code, const char *msg)
289: {
290:
291: resp_begin_http(code, msg);
292:
293: puts("<!DOCTYPE HTML PUBLIC " "\n"
294: " \"-//W3C//DTD HTML 4.01//EN\"" "\n"
295: " \"http://www.w3.org/TR/html4/strict.dtd\">" "\n"
296: "<HTML>" "\n"
297: " <HEAD>" "\n"
1.10 kristaps 298: " <META HTTP-EQUIV=\"Content-Type\" " "\n"
299: " CONTENT=\"text/html; charset=utf-8\">" "\n"
1.12 kristaps 300: " <LINK REL=\"stylesheet\" HREF=\"/man.cgi.css\"" "\n"
301: " TYPE=\"text/css\" media=\"all\">" "\n"
1.6 kristaps 302: " <TITLE>System Manpage Reference</TITLE>" "\n"
303: " </HEAD>" "\n"
304: " <BODY>" "\n"
305: "<!-- Begin page content. //-->");
306: }
307:
308: static void
309: resp_end_html(void)
310: {
311:
312: puts(" </BODY>\n</HTML>");
313: }
314:
315: static void
316: resp_searchform(const struct req *req)
317: {
318: int i;
319: const char *expr, *sec, *arch;
320:
321: expr = sec = arch = "";
322:
323: for (i = 0; i < (int)req->fieldsz; i++)
324: if (0 == strcmp(req->fields[i].key, "expr"))
325: expr = req->fields[i].val;
1.13 ! kristaps 326: else if (0 == strcmp(req->fields[i].key, "query"))
! 327: expr = req->fields[i].val;
1.6 kristaps 328: else if (0 == strcmp(req->fields[i].key, "sec"))
329: sec = req->fields[i].val;
1.13 ! kristaps 330: else if (0 == strcmp(req->fields[i].key, "sektion"))
! 331: sec = req->fields[i].val;
1.6 kristaps 332: else if (0 == strcmp(req->fields[i].key, "arch"))
333: arch = req->fields[i].val;
334:
1.13 ! kristaps 335: if (NULL != sec && 0 == strcmp(sec, "0"))
! 336: sec = NULL;
! 337:
1.6 kristaps 338: puts("<!-- Begin search form. //-->");
339: printf("<FORM ACTION=\"");
340: html_print(progname);
1.9 kristaps 341: printf("/search.html\" METHOD=\"get\">\n");
1.12 kristaps 342: puts("<FIELDSET>\n"
343: "<INPUT TYPE=\"submit\" NAME=\"op\" "
344: "VALUE=\"Whatis\"> or \n"
345: "<INPUT TYPE=\"submit\" NAME=\"op\" "
346: "VALUE=\"apropos\"> for manuals satisfying \n"
347: "<INPUT TYPE=\"text\" SIZE=\"40\" "
348: "NAME=\"expr\" VALUE=\"");
1.6 kristaps 349: html_print(expr);
1.12 kristaps 350: puts("\">, section "
351: "<INPUT TYPE=\"text\" "
352: "SIZE=\"4\" NAME=\"sec\" VALUE=\"");
1.6 kristaps 353: html_print(sec);
1.12 kristaps 354: puts("\">, arch "
355: "<INPUT TYPE=\"text\" "
356: "SIZE=\"8\" NAME=\"arch\" VALUE=\"");
1.6 kristaps 357: html_print(arch);
1.12 kristaps 358: puts("\">.\n"
359: "<INPUT TYPE=\"reset\" VALUE=\"Reset\">\n"
360: "</FIELDSET>\n"
361: "</FORM>\n"
362: "<!-- End search form. //-->");
1.6 kristaps 363: }
364:
365: static void
366: resp_index(const struct req *req)
367: {
368:
369: resp_begin_html(200, NULL);
370: resp_searchform(req);
371: resp_end_html();
372: }
373:
374: static void
1.10 kristaps 375: resp_error400(void)
1.9 kristaps 376: {
377:
1.10 kristaps 378: resp_begin_html(400, "Query Malformed");
1.12 kristaps 379: printf("<H1>Malformed Query</H1>\n"
380: "<P>\n"
381: " The query your entered was malformed.\n"
382: " Try again from the\n"
383: " <A HREF=\"%s/index.html\">main page</A>\n"
384: "</P>", progname);
1.9 kristaps 385: resp_end_html();
386: }
387:
388: static void
1.10 kristaps 389: resp_error404(const char *page)
1.6 kristaps 390: {
391:
392: resp_begin_html(404, "Not Found");
1.10 kristaps 393: puts("<H1>Page Not Found</H1>\n"
394: "<P>\n"
395: " The page you're looking for, ");
396: printf(" <B>");
397: html_print(page);
1.12 kristaps 398: printf("</B>,\n"
399: " could not be found.\n"
400: " Try searching from the\n"
401: " <A HREF=\"%s/index.html\">main page</A>\n"
402: "</P>", progname);
1.6 kristaps 403: resp_end_html();
404: }
1.1 kristaps 405:
406: static void
1.7 kristaps 407: resp_bad(void)
408: {
409: resp_begin_html(500, "Internal Server Error");
410: puts("<P>Generic badness happened.</P>");
411: resp_end_html();
412: }
413:
414: static void
1.6 kristaps 415: resp_baddb(void)
1.1 kristaps 416: {
417:
1.6 kristaps 418: resp_begin_html(500, "Internal Server Error");
419: puts("<P>Your database is broken.</P>");
420: resp_end_html();
1.1 kristaps 421: }
422:
423: static void
1.6 kristaps 424: resp_search(struct res *r, size_t sz, void *arg)
1.1 kristaps 425: {
426: int i;
427:
1.6 kristaps 428: if (1 == sz) {
429: /*
430: * If we have just one result, then jump there now
431: * without any delay.
432: */
433: puts("Status: 303 See Other");
434: printf("Location: http://%s%s/show/%u/%u.html\n",
435: host, progname,
436: r[0].volume, r[0].rec);
437: puts("Content-Type: text/html; charset=utf-8\n");
438: return;
439: }
440:
1.12 kristaps 441: resp_begin_html(200, NULL);
1.6 kristaps 442: resp_searchform((const struct req *)arg);
443:
444: if (0 == sz)
445: puts("<P>No results found.</P>");
1.1 kristaps 446:
447: for (i = 0; i < (int)sz; i++) {
1.6 kristaps 448: printf("<P><A HREF=\"");
449: html_print(progname);
450: printf("/show/%u/%u.html\">", r[i].volume, r[i].rec);
451: html_print(r[i].title);
1.1 kristaps 452: putchar('(');
1.6 kristaps 453: html_print(r[i].cat);
454: if (r[i].arch && '\0' != *r[i].arch) {
455: putchar('/');
456: html_print(r[i].arch);
457: }
458: printf(")</A> ");
459: html_print(r[i].desc);
460: puts("</P>");
1.1 kristaps 461: }
1.6 kristaps 462:
463: resp_end_html();
464: }
465:
466: /* ARGSUSED */
467: static void
468: pg_index(const struct manpaths *ps, const struct req *req, char *path)
469: {
470:
471: resp_index(req);
1.1 kristaps 472: }
473:
474: static void
1.9 kristaps 475: catman(const char *file)
476: {
1.10 kristaps 477: FILE *f;
478: size_t len;
479: int i;
480: char *p;
481: int italic, bold;
1.9 kristaps 482:
1.10 kristaps 483: if (NULL == (f = fopen(file, "r"))) {
1.9 kristaps 484: resp_baddb();
485: return;
486: }
487:
1.12 kristaps 488: resp_begin_http(200, NULL);
489: puts("<!DOCTYPE HTML PUBLIC " "\n"
490: " \"-//W3C//DTD HTML 4.01//EN\"" "\n"
491: " \"http://www.w3.org/TR/html4/strict.dtd\">" "\n"
492: "<HTML>" "\n"
493: " <HEAD>" "\n"
494: " <META HTTP-EQUIV=\"Content-Type\" " "\n"
495: " CONTENT=\"text/html; charset=utf-8\">" "\n"
496: " <LINK REL=\"stylesheet\" HREF=\"/catman.css\"" "\n"
497: " TYPE=\"text/css\" media=\"all\">" "\n"
498: " <TITLE>System Manpage Reference</TITLE>" "\n"
499: " </HEAD>" "\n"
500: " <BODY>" "\n"
501: "<!-- Begin page content. //-->");
1.10 kristaps 502:
503: puts("<PRE>");
504: while (NULL != (p = fgetln(f, &len))) {
505: bold = italic = 0;
506: for (i = 0; i < (int)len - 1; i++) {
507: /*
508: * This means that the catpage is out of state.
509: * Ignore it and keep going (although the
510: * catpage is bogus).
511: */
512:
513: if ('\b' == p[i] || '\n' == p[i])
514: continue;
515:
516: /*
517: * Print a regular character.
518: * Close out any bold/italic scopes.
519: * If we're in back-space mode, make sure we'll
520: * have something to enter when we backspace.
521: */
522:
523: if ('\b' != p[i + 1]) {
524: if (italic)
525: printf("</I>");
526: if (bold)
527: printf("</B>");
528: italic = bold = 0;
529: html_putchar(p[i]);
530: continue;
531: } else if (i + 2 >= (int)len)
532: continue;
533:
534: /* Italic mode. */
535:
536: if ('_' == p[i]) {
537: if (bold)
538: printf("</B>");
539: if ( ! italic)
540: printf("<I>");
541: bold = 0;
542: italic = 1;
543: i += 2;
544: html_putchar(p[i]);
545: continue;
546: }
547:
548: /*
549: * Handle funny behaviour troff-isms.
550: * These grok'd from the original man2html.c.
551: */
552:
553: if (('+' == p[i] && 'o' == p[i + 2]) ||
554: ('o' == p[i] && '+' == p[i + 2]) ||
555: ('|' == p[i] && '=' == p[i + 2]) ||
556: ('=' == p[i] && '|' == p[i + 2]) ||
557: ('*' == p[i] && '=' == p[i + 2]) ||
558: ('=' == p[i] && '*' == p[i + 2]) ||
559: ('*' == p[i] && '|' == p[i + 2]) ||
560: ('|' == p[i] && '*' == p[i + 2])) {
561: if (italic)
562: printf("</I>");
563: if (bold)
564: printf("</B>");
565: italic = bold = 0;
566: putchar('*');
567: i += 2;
568: continue;
569: } else if (('|' == p[i] && '-' == p[i + 2]) ||
570: ('-' == p[i] && '|' == p[i + 1]) ||
571: ('+' == p[i] && '-' == p[i + 1]) ||
572: ('-' == p[i] && '+' == p[i + 1]) ||
573: ('+' == p[i] && '|' == p[i + 1]) ||
574: ('|' == p[i] && '+' == p[i + 1])) {
575: if (italic)
576: printf("</I>");
577: if (bold)
578: printf("</B>");
579: italic = bold = 0;
580: putchar('+');
581: i += 2;
582: continue;
583: }
584:
585: /* Bold mode. */
586:
587: if (italic)
588: printf("</I>");
589: if ( ! bold)
590: printf("<B>");
591: bold = 1;
592: italic = 0;
593: i += 2;
594: html_putchar(p[i]);
595: }
596:
597: /*
598: * Clean up the last character.
599: * We can get to a newline; don't print that.
600: */
1.9 kristaps 601:
1.10 kristaps 602: if (italic)
603: printf("</I>");
604: if (bold)
605: printf("</B>");
1.9 kristaps 606:
1.10 kristaps 607: if (i == (int)len - 1 && '\n' != p[i])
608: html_putchar(p[i]);
1.9 kristaps 609:
1.10 kristaps 610: putchar('\n');
611: }
612:
613: puts("</PRE>\n"
614: "</BODY>\n"
615: "</HTML>");
616:
617: fclose(f);
1.9 kristaps 618: }
619:
620: static void
1.8 kristaps 621: format(const char *file)
1.7 kristaps 622: {
1.8 kristaps 623: struct mparse *mp;
624: int fd;
625: struct mdoc *mdoc;
626: struct man *man;
627: void *vp;
628: enum mandoclevel rc;
1.10 kristaps 629: char opts[MAXPATHLEN + 128];
1.7 kristaps 630:
1.8 kristaps 631: if (-1 == (fd = open(file, O_RDONLY, 0))) {
632: resp_baddb();
1.7 kristaps 633: return;
634: }
635:
1.8 kristaps 636: mp = mparse_alloc(MPARSE_AUTO, MANDOCLEVEL_FATAL, NULL, NULL);
637: rc = mparse_readfd(mp, fd, file);
638: close(fd);
1.7 kristaps 639:
1.8 kristaps 640: if (rc >= MANDOCLEVEL_FATAL) {
1.7 kristaps 641: resp_baddb();
642: return;
643: }
644:
1.11 kristaps 645: snprintf(opts, sizeof(opts), "style=/man.css,"
1.10 kristaps 646: "man=%s/search.html?sec=%%S&expr=%%N,"
1.11 kristaps 647: /*"includes=/cgi-bin/man.cgi/usr/include/%%I"*/,
1.10 kristaps 648: progname);
649:
1.8 kristaps 650: mparse_result(mp, &mdoc, &man);
1.10 kristaps 651: vp = html_alloc(opts);
1.7 kristaps 652:
1.8 kristaps 653: if (NULL != mdoc) {
654: resp_begin_http(200, NULL);
655: html_mdoc(vp, mdoc);
656: } else if (NULL != man) {
657: resp_begin_http(200, NULL);
658: html_man(vp, man);
659: } else
660: resp_baddb();
1.7 kristaps 661:
1.8 kristaps 662: html_free(vp);
663: mparse_free(mp);
1.7 kristaps 664: }
665:
666: static void
1.6 kristaps 667: pg_show(const struct manpaths *ps, const struct req *req, char *path)
1.1 kristaps 668: {
1.6 kristaps 669: char *sub;
1.7 kristaps 670: char file[MAXPATHLEN];
1.9 kristaps 671: const char *fn, *cp;
1.6 kristaps 672: int rc;
673: unsigned int vol, rec;
1.9 kristaps 674: DB *idx;
1.6 kristaps 675: DBT key, val;
676:
677: if (NULL == path) {
1.10 kristaps 678: resp_error400();
1.6 kristaps 679: return;
680: } else if (NULL == (sub = strrchr(path, '/'))) {
1.10 kristaps 681: resp_error400();
1.6 kristaps 682: return;
683: } else
684: *sub++ = '\0';
685:
686: if ( ! (atou(path, &vol) && atou(sub, &rec))) {
1.10 kristaps 687: resp_error400();
1.6 kristaps 688: return;
689: } else if (vol >= (unsigned int)ps->sz) {
1.10 kristaps 690: resp_error400();
1.6 kristaps 691: return;
692: }
693:
694: strlcpy(file, ps->paths[vol], MAXPATHLEN);
695: strlcat(file, "/mandoc.index", MAXPATHLEN);
696:
697: /* Open the index recno(3) database. */
698:
1.9 kristaps 699: idx = dbopen(file, O_RDONLY, 0, DB_RECNO, NULL);
700: if (NULL == idx) {
1.6 kristaps 701: resp_baddb();
702: return;
703: }
704:
705: key.data = &rec;
706: key.size = 4;
707:
1.9 kristaps 708: if (0 != (rc = (*idx->get)(idx, &key, &val, 0))) {
1.10 kristaps 709: rc < 0 ? resp_baddb() : resp_error400();
1.9 kristaps 710: goto out;
1.6 kristaps 711: }
712:
1.9 kristaps 713: cp = (char *)val.data;
1.6 kristaps 714:
1.9 kristaps 715: if (NULL == (fn = memchr(cp, '\0', val.size)))
716: resp_baddb();
717: else if (++fn - cp >= (int)val.size)
718: resp_baddb();
719: else if (NULL == memchr(fn, '\0', val.size - (fn - cp)))
720: resp_baddb();
721: else {
722: strlcpy(file, ps->paths[vol], MAXPATHLEN);
723: strlcat(file, "/", MAXPATHLEN);
724: strlcat(file, fn, MAXPATHLEN);
725: if (0 == strcmp(cp, "cat"))
726: catman(file);
727: else
728: format(file);
729: }
730: out:
731: (*idx->close)(idx);
1.6 kristaps 732: }
733:
734: static void
735: pg_search(const struct manpaths *ps, const struct req *req, char *path)
736: {
737: size_t tt;
1.12 kristaps 738: int i, sz, rc, whatis;
1.6 kristaps 739: const char *ep, *start;
740: char **cp;
741: struct opts opt;
742: struct expr *expr;
743:
744: expr = NULL;
745: cp = NULL;
746: ep = NULL;
747: sz = 0;
1.12 kristaps 748: whatis = 0;
1.1 kristaps 749:
750: memset(&opt, 0, sizeof(struct opts));
1.6 kristaps 751:
752: for (sz = i = 0; i < (int)req->fieldsz; i++)
753: if (0 == strcmp(req->fields[i].key, "expr"))
754: ep = req->fields[i].val;
1.13 ! kristaps 755: else if (0 == strcmp(req->fields[i].key, "query"))
! 756: ep = req->fields[i].val;
1.6 kristaps 757: else if (0 == strcmp(req->fields[i].key, "sec"))
758: opt.cat = req->fields[i].val;
1.13 ! kristaps 759: else if (0 == strcmp(req->fields[i].key, "sektion"))
! 760: opt.cat = req->fields[i].val;
1.6 kristaps 761: else if (0 == strcmp(req->fields[i].key, "arch"))
762: opt.arch = req->fields[i].val;
1.13 ! kristaps 763: else if (0 == strcmp(req->fields[i].key, "apropos"))
! 764: whatis = 0 == strcmp
! 765: (req->fields[i].val, "0");
1.12 kristaps 766: else if (0 == strcmp(req->fields[i].key, "op"))
767: whatis = 0 == strcasecmp
768: (req->fields[i].val, "whatis");
1.13 ! kristaps 769:
! 770: if (NULL != opt.cat && 0 == strcmp(opt.cat, "0"))
! 771: opt.cat = NULL;
1.6 kristaps 772:
773: /*
774: * Poor man's tokenisation.
775: * Just break apart by spaces.
776: * Yes, this is half-ass. But it works for now.
777: */
778:
779: while (ep && isspace((unsigned char)*ep))
780: ep++;
781:
782: while (ep && '\0' != *ep) {
783: cp = mandoc_realloc(cp, (sz + 1) * sizeof(char *));
784: start = ep;
785: while ('\0' != *ep && ! isspace((unsigned char)*ep))
786: ep++;
787: cp[sz] = mandoc_malloc((ep - start) + 1);
788: memcpy(cp[sz], start, ep - start);
789: cp[sz++][ep - start] = '\0';
790: while (isspace((unsigned char)*ep))
791: ep++;
792: }
793:
794: rc = -1;
795:
796: /*
797: * Pump down into apropos backend.
798: * The resp_search() function is called with the results.
799: */
800:
1.12 kristaps 801: expr = whatis ? termcomp(sz, cp, &tt) :
802: exprcomp(sz, cp, &tt);
803:
804: if (NULL != expr)
1.6 kristaps 805: rc = apropos_search
806: (ps->sz, ps->paths, &opt,
807: expr, tt, (void *)req, resp_search);
808:
809: /* ...unless errors occured. */
810:
811: if (0 == rc)
812: resp_baddb();
813: else if (-1 == rc)
1.10 kristaps 814: resp_search(NULL, 0, (void *)req);
1.6 kristaps 815:
816: for (i = 0; i < sz; i++)
817: free(cp[i]);
818:
819: free(cp);
820: exprfree(expr);
1.1 kristaps 821: }
822:
823: int
824: main(void)
825: {
826: int i;
827: struct req req;
1.6 kristaps 828: char *p, *path, *subpath;
829: struct manpaths paths;
830:
831: /* HTTP init: read and parse the query string. */
832:
833: progname = getenv("SCRIPT_NAME");
834: if (NULL == progname)
835: progname = "";
836:
1.7 kristaps 837: cache = getenv("CACHE_DIR");
838: if (NULL == cache)
839: cache = "/cache/man.cgi";
840:
1.8 kristaps 841: if (-1 == chdir(cache)) {
842: resp_bad();
843: return(EXIT_FAILURE);
1.7 kristaps 844: }
845:
1.6 kristaps 846: host = getenv("HTTP_HOST");
847: if (NULL == host)
848: host = "localhost";
1.1 kristaps 849:
850: memset(&req, 0, sizeof(struct req));
851:
852: if (NULL != (p = getenv("QUERY_STRING")))
853: kval_parse(&req.fields, &req.fieldsz, p);
854:
1.6 kristaps 855: /* Resolve leading subpath component. */
1.1 kristaps 856:
1.6 kristaps 857: subpath = path = NULL;
1.1 kristaps 858: req.page = PAGE__MAX;
859:
860: if (NULL == (path = getenv("PATH_INFO")) || '\0' == *path)
861: req.page = PAGE_INDEX;
1.6 kristaps 862:
1.1 kristaps 863: if (NULL != path && '/' == *path && '\0' == *++path)
864: req.page = PAGE_INDEX;
865:
1.6 kristaps 866: /* Strip file suffix. */
867:
868: if (NULL != path && NULL != (p = strrchr(path, '.')))
869: if (NULL != p && NULL == strchr(p, '/'))
870: *p++ = '\0';
871:
872: /* Resolve subpath component. */
1.1 kristaps 873:
874: if (NULL != path && NULL != (subpath = strchr(path, '/')))
1.6 kristaps 875: *subpath++ = '\0';
1.1 kristaps 876:
1.6 kristaps 877: /* Map path into one we recognise. */
1.1 kristaps 878:
879: if (NULL != path && '\0' != *path)
880: for (i = 0; i < (int)PAGE__MAX; i++)
881: if (0 == strcmp(pages[i], path)) {
882: req.page = (enum page)i;
883: break;
884: }
885:
1.6 kristaps 886: /* Initialise MANPATH. */
887:
888: memset(&paths, 0, sizeof(struct manpaths));
1.9 kristaps 889: manpath_manconf("etc/catman.conf", &paths);
1.6 kristaps 890:
891: /* Route pages. */
892:
1.1 kristaps 893: switch (req.page) {
894: case (PAGE_INDEX):
1.6 kristaps 895: pg_index(&paths, &req, subpath);
1.1 kristaps 896: break;
897: case (PAGE_SEARCH):
1.6 kristaps 898: pg_search(&paths, &req, subpath);
899: break;
900: case (PAGE_SHOW):
901: pg_show(&paths, &req, subpath);
1.1 kristaps 902: break;
903: default:
1.10 kristaps 904: resp_error404(path);
1.1 kristaps 905: break;
906: }
907:
1.6 kristaps 908: manpath_free(&paths);
1.1 kristaps 909: kval_free(req.fields, req.fieldsz);
1.6 kristaps 910:
1.1 kristaps 911: return(EXIT_SUCCESS);
912: }