===================================================================
RCS file: /cvs/mandoc/cgi.c,v
retrieving revision 1.2
retrieving revision 1.39
diff -u -p -r1.2 -r1.39
--- mandoc/cgi.c	2011/11/09 22:05:56	1.2
+++ mandoc/cgi.c	2011/12/25 17:49:52	1.39
@@ -1,181 +1,330 @@
-/*	$Id: cgi.c,v 1.2 2011/11/09 22:05:56 kristaps Exp $ */
+/*	$Id: cgi.c,v 1.39 2011/12/25 17:49:52 kristaps Exp $ */
+/*
+ * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/wait.h>
+
 #include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <dirent.h>
 #include <fcntl.h>
+#include <limits.h>
 #include <regex.h>
 #include <stdio.h>
 #include <stdarg.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
-#include "apropos.h"
+#include "apropos_db.h"
 #include "mandoc.h"
+#include "mdoc.h"
+#include "man.h"
+#include "main.h"
+#include "manpath.h"
+#include "mandocdb.h"
 
-/*
- * The page a request is trying to make.
- */
+#ifdef __linux__
+# include <db_185.h>
+#else
+# include <db.h>
+#endif
+
 enum	page {
 	PAGE_INDEX,
 	PAGE_SEARCH,
+	PAGE_SHOW,
 	PAGE__MAX
 };
 
-/*
- * Key-value pair.  
- * Both key and val are on the heap.
- */
-struct	kval {
-	char		*key;
-	char		*val;
+struct	paths {
+	char		*name;
+	char		*path;
 };
 
 /*
- * The media type, determined by suffix, of the requesting or responding
- * context.
+ * A query as passed to the search function.
  */
-enum	media {
-	MEDIA_HTML,
-	MEDIA__MAX
+struct	query {
+	const char	*arch; /* architecture */
+	const char	*sec; /* manual section */
+	const char	*expr; /* unparsed expression string */
+	int		 manroot; /* manroot index (or -1)*/
+	int		 whatis; /* whether whatis mode */
+	int		 legacy; /* whether legacy mode */
 };
 
-/*
- * An HTTP request.
- */
 struct	req {
-	struct kval	*fields; /* query fields */
-	size_t		 fieldsz;
-	enum media	 media;
+	struct query	 q;
+	struct paths	*p;
+	size_t		 psz;
 	enum page	 page;
 };
 
-#if 0
-static	void		 html_printtext(const char *);
-#endif
-static	int 		 kval_decode(char *);
-static	void		 kval_parse(struct kval **, size_t *, char *);
-static	void		 kval_free(struct kval *, size_t);
+static	int		 atou(const char *, unsigned *);
+static	void		 catman(const struct req *, const char *);
+static	int	 	 cmp(const void *, const void *);
+static	void		 format(const struct req *, const char *);
+static	void		 html_print(const char *);
+static	void		 html_printquery(const struct req *);
+static	void		 html_putchar(char);
+static	int 		 http_decode(char *);
+static	void		 http_parse(struct req *, char *);
+static	void		 http_print(const char *);
+static	void 		 http_putchar(char);
+static	void		 http_printquery(const struct req *);
+static	int		 pathstop(DIR *);
+static	void		 pathgen(DIR *, char *, struct req *);
 static	void		 pg_index(const struct req *, char *);
 static	void		 pg_search(const struct req *, char *);
-#if 0
-static	void		 pg_searchres(struct rec *, size_t, void *);
-#endif
+static	void		 pg_show(const struct req *, char *);
+static	void		 resp_bad(void);
+static	void		 resp_baddb(void);
+static	void		 resp_error400(void);
+static	void		 resp_error404(const char *);
+static	void		 resp_begin_html(int, const char *);
+static	void		 resp_begin_http(int, const char *);
+static	void		 resp_end_html(void);
+static	void		 resp_index(const struct req *);
+static	void		 resp_search(struct res *, size_t, void *);
+static	void		 resp_searchform(const struct req *);
 
+static	const char	 *progname; /* cgi script name */
+static	const char	 *cache; /* cache directory */
+static	const char	 *css; /* css directory */
+static	const char	 *host; /* hostname */
+
 static	const char * const pages[PAGE__MAX] = {
 	"index", /* PAGE_INDEX */ 
 	"search", /* PAGE_SEARCH */
+	"show", /* PAGE_SHOW */
 };
 
-static	const char * const medias[MEDIA__MAX] = {
-	"html", /* MEDIA_HTML */
-};
+/*
+ * This is just OpenBSD's strtol(3) suggestion.
+ * I use it instead of strtonum(3) for portability's sake.
+ */
+static int
+atou(const char *buf, unsigned *v)
+{
+	char		*ep;
+	long		 lval;
 
-#if 0
+	errno = 0;
+	lval = strtol(buf, &ep, 10);
+	if (buf[0] == '\0' || *ep != '\0')
+		return(0);
+	if ((errno == ERANGE && (lval == LONG_MAX || 
+					lval == LONG_MIN)) ||
+			(lval > INT_MAX || lval < 0))
+		return(0);
+
+	*v = (unsigned int)lval;
+	return(1);
+}
+
+/*
+ * Print a character, escaping HTML along the way.
+ * This will pass non-ASCII straight to output: be warned!
+ */
 static void
-html_printtext(const char *p)
+html_putchar(char c)
 {
-	char		 c;
 
-	while ('\0' != *p)
-		switch ((c = *p++)) {
-		case ('"'):
-			printf("&quote;");
-			break;
-		case ('&'):
-			printf("&amp;");
-			break;
-		case ('>'):
-			printf("&gt;");
-			break;
-		case ('<'):
-			printf("&lt;");
-			break;
-		default:
-			putchar((unsigned char)c);
-			break;
-		}
+	switch (c) {
+	case ('"'):
+		printf("&quote;");
+		break;
+	case ('&'):
+		printf("&amp;");
+		break;
+	case ('>'):
+		printf("&gt;");
+		break;
+	case ('<'):
+		printf("&lt;");
+		break;
+	default:
+		putchar((unsigned char)c);
+		break;
+	}
 }
-#endif
+static void
+http_printquery(const struct req *req)
+{
 
+	printf("&expr=");
+	http_print(req->q.expr ? req->q.expr : "");
+	printf("&sec=");
+	http_print(req->q.sec ? req->q.sec : "");
+	printf("&arch=");
+	http_print(req->q.arch ? req->q.arch : "");
+}
+
+
 static void
-kval_free(struct kval *p, size_t sz)
+html_printquery(const struct req *req)
 {
-	int		 i;
 
-	for (i = 0; i < (int)sz; i++) {
-		free(p[i].key);
-		free(p[i].val);
-	}
-	free(p);
+	printf("&amp;expr=");
+	html_print(req->q.expr ? req->q.expr : "");
+	printf("&amp;sec=");
+	html_print(req->q.sec ? req->q.sec : "");
+	printf("&amp;arch=");
+	html_print(req->q.arch ? req->q.arch : "");
 }
 
+static void
+http_print(const char *p)
+{
+
+	if (NULL == p)
+		return;
+	while ('\0' != *p)
+		http_putchar(*p++);
+}
+
 /*
+ * Call through to html_putchar().
+ * Accepts NULL strings.
+ */
+static void
+html_print(const char *p)
+{
+	
+	if (NULL == p)
+		return;
+	while ('\0' != *p)
+		html_putchar(*p++);
+}
+
+/*
  * Parse out key-value pairs from an HTTP request variable.
- * This can be either a cookie or a POST/GET string.
+ * This can be either a cookie or a POST/GET string, although man.cgi
+ * uses only GET for simplicity.
  */
 static void
-kval_parse(struct kval **kv, size_t *kvsz, char *p)
+http_parse(struct req *req, char *p)
 {
-	char            *key, *val;
-	size_t           sz, cur;
+	char            *key, *val, *manroot;
+	int		 i, legacy;
 
-	cur = 0;
+	memset(&req->q, 0, sizeof(struct query));
 
-	while (p && '\0' != *p) {
-		while (' ' == *p)
-			p++;
+	req->q.whatis = 1;
+	legacy = -1;
+	manroot = NULL;
 
+	while ('\0' != *p) {
 		key = p;
 		val = NULL;
 
-		if (NULL != (p = strchr(p, '='))) {
+		p += (int)strcspn(p, ";&");
+		if ('\0' != *p)
 			*p++ = '\0';
-			val = p;
+		if (NULL != (val = strchr(key, '=')))
+			*val++ = '\0';
 
-			sz = strcspn(p, ";&");
-			/* LINTED */
-			p += sz;
+		if ('\0' == *key || NULL == val || '\0' == *val)
+			continue;
 
-			if ('\0' != *p)
-				*p++ = '\0';
-		} else {
-			p = key;
-			sz = strcspn(p, ";&");
-			/* LINTED */
-			p += sz;
+		/* Just abort handling. */
 
-			if ('\0' != *p)
-				p++;
-			continue;
-		}
+		if ( ! http_decode(key))
+			break;
+		if (NULL != val && ! http_decode(val))
+			break;
 
-		if ('\0' == *key || '\0' == *val)
-			continue;
+		if (0 == strcmp(key, "expr"))
+			req->q.expr = val;
+		else if (0 == strcmp(key, "query"))
+			req->q.expr = val;
+		else if (0 == strcmp(key, "sec"))
+			req->q.sec = val;
+		else if (0 == strcmp(key, "sektion"))
+			req->q.sec = val;
+		else if (0 == strcmp(key, "arch"))
+			req->q.arch = val;
+		else if (0 == strcmp(key, "manpath"))
+			manroot = val;
+		else if (0 == strcmp(key, "apropos"))
+			legacy = 0 == strcmp(val, "0");
+		else if (0 == strcmp(key, "op"))
+			req->q.whatis = 0 == strcasecmp(val, "whatis");
+	}
 
-		/* Just abort handling. */
+	/* Test for old man.cgi compatibility mode. */
 
-		if ( ! kval_decode(key))
-			return;
-		if ( ! kval_decode(val))
-			return;
+	if (legacy == 0) {
+		req->q.whatis = 0;
+		req->q.legacy = 1;
+	} else if (legacy > 0) {
+		req->q.legacy = 1;
+		req->q.whatis = 1;
+	}
 
-		if (*kvsz + 1 >= cur) {
-			cur++;
-			*kv = mandoc_realloc
-				(*kv, cur * sizeof(struct kval));
-		}
+	/* 
+	 * Section "0" means no section when in legacy mode.
+	 * For some man.cgi scripts, "default" arch is none.
+	 */
 
-		(*kv)[(int)*kvsz].key = mandoc_strdup(key);
-		(*kv)[(int)*kvsz].val = mandoc_strdup(val);
-		(*kvsz)++;
+	if (req->q.legacy && NULL != req->q.sec)
+		if (0 == strcmp(req->q.sec, "0"))
+			req->q.sec = NULL;
+	if (req->q.legacy && NULL != req->q.arch)
+		if (0 == strcmp(req->q.arch, "default"))
+			req->q.arch = NULL;
+
+	/* Default to first manroot. */
+
+	if (NULL != manroot) {
+		for (i = 0; i < (int)req->psz; i++)
+			if (0 == strcmp(req->p[i].name, manroot))
+				break;
+		req->q.manroot = i < (int)req->psz ? i : -1;
 	}
 }
 
+static void
+http_putchar(char c)
+{
+
+	if (isalnum((unsigned char)c)) {
+		putchar((unsigned char)c);
+		return;
+	} else if (' ' == c) {
+		putchar('+');
+		return;
+	}
+	printf("%%%.2x", c);
+}
+
 /*
- * In-place HTTP-decode a string.  The standard explanation is that this
- * turns "%4e+foo" into "n foo" in the regular way.  This is done
- * in-place over the allocated string.
+ * HTTP-decode a string.  The standard explanation is that this turns
+ * "%4e+foo" into "n foo" in the regular way.  This is done in-place
+ * over the allocated string.
  */
 static int
-kval_decode(char *p)
+http_decode(char *p)
 {
 	char             hex[3];
 	int              c;
@@ -203,89 +352,708 @@ kval_decode(char *p)
 	return(1);
 }
 
+static void
+resp_begin_http(int code, const char *msg)
+{
 
-/* ARGSUSED */
+	if (200 != code)
+		printf("Status: %d %s\n", code, msg);
+
+	puts("Content-Type: text/html; charset=utf-8\n"
+	     "Cache-Control: no-cache\n"
+	     "Pragma: no-cache\n"
+	     "");
+
+	fflush(stdout);
+}
+
 static void
-pg_index(const struct req *req, char *path)
+resp_begin_html(int code, const char *msg)
 {
 
+	resp_begin_http(code, msg);
+
+	printf("<!DOCTYPE HTML PUBLIC "
+	       " \"-//W3C//DTD HTML 4.01//EN\""
+	       " \"http://www.w3.org/TR/html4/strict.dtd\">\n"
+	       "<HTML>\n"
+	       "<HEAD>\n"
+	       "<META HTTP-EQUIV=\"Content-Type\""
+	       " CONTENT=\"text/html; charset=utf-8\">\n"
+	       "<LINK REL=\"stylesheet\" HREF=\"%s/man-cgi.css\""
+	       " TYPE=\"text/css\" media=\"all\">\n"
+	       "<LINK REL=\"stylesheet\" HREF=\"%s/man.css\""
+	       " TYPE=\"text/css\" media=\"all\">\n"
+	       "<TITLE>System Manpage Reference</TITLE>\n"
+	       "</HEAD>\n"
+	       "<BODY>\n"
+	       "<!-- Begin page content. //-->\n", css, css);
 }
 
-#if 0
 static void
-pg_searchres(struct rec *recs, size_t sz, void *arg)
+resp_end_html(void)
 {
+
+	puts("</BODY>\n"
+	     "</HTML>");
+}
+
+static void
+resp_searchform(const struct req *req)
+{
 	int		 i;
-	const char	*pg;
 
-	if (NULL == (pg = getenv("SCRIPT_NAME")))
-		pg = "";
+	puts("<!-- Begin search form. //-->");
+	printf("<DIV ID=\"mancgi\">\n"
+	       "<FORM ACTION=\"%s/search.html\" METHOD=\"get\">\n"
+	       "<FIELDSET>\n"
+	       "<LEGEND>Search Parameters</LEGEND>\n"
+	       "<INPUT TYPE=\"submit\" NAME=\"op\""
+	       " VALUE=\"Whatis\"> or \n"
+	       "<INPUT TYPE=\"submit\" NAME=\"op\""
+	       " VALUE=\"apropos\"> for manuals satisfying \n"
+	       "<INPUT TYPE=\"text\" NAME=\"expr\" VALUE=\"",
+	       progname);
+	html_print(req->q.expr ? req->q.expr : "");
+	printf("\">, section "
+	       "<INPUT TYPE=\"text\""
+	       " SIZE=\"4\" NAME=\"sec\" VALUE=\"");
+	html_print(req->q.sec ? req->q.sec : "");
+	printf("\">, arch "
+	       "<INPUT TYPE=\"text\""
+	       " SIZE=\"8\" NAME=\"arch\" VALUE=\"");
+	html_print(req->q.arch ? req->q.arch : "");
+	printf("\">");
+	if (req->psz > 1) {
+		puts(", <SELECT NAME=\"manpath\">");
+		for (i = 0; i < (int)req->psz; i++) {
+			printf("<OPTION %s VALUE=\"",
+				(i == req->q.manroot) ||
+				(0 == i && -1 == req->q.manroot) ?
+				"SELECTED=\"selected\"" : "");
+			html_print(req->p[i].name);
+			printf("\">");
+			html_print(req->p[i].name);
+			puts("</OPTION>");
+		}
+		puts("</SELECT>");
+	}
+	puts(".\n"
+	     "<INPUT TYPE=\"reset\" VALUE=\"Reset\">\n"
+	     "</FIELDSET>\n"
+	     "</FORM>\n"
+	     "</DIV>");
+	puts("<!-- End search form. //-->");
+}
 
+static void
+resp_index(const struct req *req)
+{
+
+	resp_begin_html(200, NULL);
+	resp_searchform(req);
+	resp_end_html();
+}
+
+static void
+resp_error400(void)
+{
+
+	resp_begin_html(400, "Query Malformed");
+	printf("<H1>Malformed Query</H1>\n"
+	       "<P>\n"
+	       "The query your entered was malformed.\n"
+	       "Try again from the\n"
+	       "<A HREF=\"%s/index.html\">main page</A>.\n"
+	       "</P>", progname);
+	resp_end_html();
+}
+
+static void
+resp_error404(const char *page)
+{
+
+	resp_begin_html(404, "Not Found");
+	puts("<H1>Page Not Found</H1>\n"
+	     "<P>\n"
+	     "The page you're looking for, ");
+	printf("<B>");
+	html_print(page);
+	printf("</B>,\n"
+	       "could not be found.\n"
+	       "Try searching from the\n"
+	       "<A HREF=\"%s/index.html\">main page</A>.\n"
+	       "</P>", progname);
+	resp_end_html();
+}
+
+static void
+resp_bad(void)
+{
+	resp_begin_html(500, "Internal Server Error");
+	puts("<P>Generic badness happened.</P>");
+	resp_end_html();
+}
+
+static void
+resp_baddb(void)
+{
+
+	resp_begin_html(500, "Internal Server Error");
+	puts("<P>Your database is broken.</P>");
+	resp_end_html();
+}
+
+static void
+resp_search(struct res *r, size_t sz, void *arg)
+{
+	int		  i;
+	const struct req *req;
+
+	req = (const struct req *)arg;
+
+	if (sz > 0)
+		assert(req->q.manroot >= 0);
+	
+	if (1 == sz) {
+		/*
+		 * If we have just one result, then jump there now
+		 * without any delay.
+		 */
+		puts("Status: 303 See Other");
+		printf("Location: http://%s%s/show/%d/%u/%u.html?",
+				host, progname, req->q.manroot,
+				r[0].volume, r[0].rec);
+		http_printquery(req);
+		puts("\n"
+		     "Content-Type: text/html; charset=utf-8\n");
+		return;
+	}
+
+	qsort(r, sz, sizeof(struct res), cmp);
+
+	resp_begin_html(200, NULL);
+	resp_searchform(req);
+
+	puts("<DIV CLASS=\"results\">");
+
+	if (0 == sz) {
+		printf("<P>\n"
+		       "No %s results found.\n",
+		       req->q.whatis ? "whatis" : "apropos");
+		if (req->q.whatis) {
+			printf("(Try "
+			       "<A HREF=\"%s/search.html?op=apropos",
+			       progname);
+			html_printquery(req);
+			puts("\">apropos</A>?)");
+		}
+		puts("</P>");
+		puts("</DIV>");
+		resp_end_html();
+		return;
+	}
+
+	puts("<TABLE>");
+
 	for (i = 0; i < (int)sz; i++) {
-		printf("<A HREF=\"%s/show/%u.html\">", 
-				pg, recs[i].rec);
-		html_printtext(recs[i].title);
+		printf("<TR>\n"
+		       "<TD CLASS=\"title\">\n"
+		       "<A HREF=\"%s/show/%d/%u/%u.html?", 
+				progname, req->q.manroot,
+				r[i].volume, r[i].rec);
+		html_printquery(req);
+		printf("\">");
+		html_print(r[i].title);
 		putchar('(');
-		html_printtext(recs[i].cat);
-		puts(")</A>");
+		html_print(r[i].cat);
+		if (r[i].arch && '\0' != *r[i].arch) {
+			putchar('/');
+			html_print(r[i].arch);
+		}
+		printf(")</A>\n"
+		       "</TD>\n"
+		       "<TD CLASS=\"desc\">");
+		html_print(r[i].desc);
+		puts("</TD>\n"
+		     "</TR>");
 	}
+
+	puts("</TABLE>\n"
+	     "</DIV>");
+	resp_end_html();
 }
-#endif
 
+/* ARGSUSED */
 static void
-pg_search(const struct req *req, char *path)
+pg_index(const struct req *req, char *path)
 {
+
+	resp_index(req);
+}
+
+static void
+catman(const struct req *req, const char *file)
+{
+	FILE		*f;
+	size_t		 len;
 	int		 i;
-	struct opts	 opt;
+	char		*p;
+	int		 italic, bold;
 
-	for (i = 0; i < (int)req->fieldsz; i++)
-		if (0 == strcmp(req->fields[i].key, "key"))
-			break;
+	if (NULL == (f = fopen(file, "r"))) {
+		resp_baddb();
+		return;
+	}
 
-	if (i == (int)req->fieldsz)
+	resp_begin_html(200, NULL);
+	resp_searchform(req);
+	puts("<DIV CLASS=\"catman\">\n"
+	     "<PRE>");
+
+	while (NULL != (p = fgetln(f, &len))) {
+		bold = italic = 0;
+		for (i = 0; i < (int)len - 1; i++) {
+			/* 
+			 * This means that the catpage is out of state.
+			 * Ignore it and keep going (although the
+			 * catpage is bogus).
+			 */
+
+			if ('\b' == p[i] || '\n' == p[i])
+				continue;
+
+			/*
+			 * Print a regular character.
+			 * Close out any bold/italic scopes.
+			 * If we're in back-space mode, make sure we'll
+			 * have something to enter when we backspace.
+			 */
+
+			if ('\b' != p[i + 1]) {
+				if (italic)
+					printf("</I>");
+				if (bold)
+					printf("</B>");
+				italic = bold = 0;
+				html_putchar(p[i]);
+				continue;
+			} else if (i + 2 >= (int)len)
+				continue;
+
+			/* Italic mode. */
+
+			if ('_' == p[i]) {
+				if (bold)
+					printf("</B>");
+				if ( ! italic)
+					printf("<I>");
+				bold = 0;
+				italic = 1;
+				i += 2;
+				html_putchar(p[i]);
+				continue;
+			}
+
+			/* 
+			 * Handle funny behaviour troff-isms.
+			 * These grok'd from the original man2html.c.
+			 */
+
+			if (('+' == p[i] && 'o' == p[i + 2]) ||
+					('o' == p[i] && '+' == p[i + 2]) ||
+					('|' == p[i] && '=' == p[i + 2]) ||
+					('=' == p[i] && '|' == p[i + 2]) ||
+					('*' == p[i] && '=' == p[i + 2]) ||
+					('=' == p[i] && '*' == p[i + 2]) ||
+					('*' == p[i] && '|' == p[i + 2]) ||
+					('|' == p[i] && '*' == p[i + 2]))  {
+				if (italic)
+					printf("</I>");
+				if (bold)
+					printf("</B>");
+				italic = bold = 0;
+				putchar('*');
+				i += 2;
+				continue;
+			} else if (('|' == p[i] && '-' == p[i + 2]) ||
+					('-' == p[i] && '|' == p[i + 1]) ||
+					('+' == p[i] && '-' == p[i + 1]) ||
+					('-' == p[i] && '+' == p[i + 1]) ||
+					('+' == p[i] && '|' == p[i + 1]) ||
+					('|' == p[i] && '+' == p[i + 1]))  {
+				if (italic)
+					printf("</I>");
+				if (bold)
+					printf("</B>");
+				italic = bold = 0;
+				putchar('+');
+				i += 2;
+				continue;
+			}
+
+			/* Bold mode. */
+			
+			if (italic)
+				printf("</I>");
+			if ( ! bold)
+				printf("<B>");
+			bold = 1;
+			italic = 0;
+			i += 2;
+			html_putchar(p[i]);
+		}
+
+		/* 
+		 * Clean up the last character.
+		 * We can get to a newline; don't print that. 
+		 */
+
+		if (italic)
+			printf("</I>");
+		if (bold)
+			printf("</B>");
+
+		if (i == (int)len - 1 && '\n' != p[i])
+			html_putchar(p[i]);
+
+		putchar('\n');
+	}
+
+	puts("</PRE>\n"
+	     "</DIV>\n"
+	     "</BODY>\n"
+	     "</HTML>");
+
+	fclose(f);
+}
+
+static void
+format(const struct req *req, const char *file)
+{
+	struct mparse	*mp;
+	int		 fd;
+	struct mdoc	*mdoc;
+	struct man	*man;
+	void		*vp;
+	enum mandoclevel rc;
+	char		 opts[MAXPATHLEN + 128];
+
+	if (-1 == (fd = open(file, O_RDONLY, 0))) {
+		resp_baddb();
 		return;
+	}
 
+	mp = mparse_alloc(MPARSE_AUTO, MANDOCLEVEL_FATAL, NULL, NULL);
+	rc = mparse_readfd(mp, fd, file);
+	close(fd);
+
+	if (rc >= MANDOCLEVEL_FATAL) {
+		resp_baddb();
+		return;
+	}
+
+	snprintf(opts, sizeof(opts), "fragment,"
+			"man=%s/search.html?sec=%%S&expr=%%N,"
+			/*"includes=/cgi-bin/man.cgi/usr/include/%%I"*/,
+			progname);
+
+	mparse_result(mp, &mdoc, &man);
+	if (NULL == man && NULL == mdoc) {
+		resp_baddb();
+		mparse_free(mp);
+		return;
+	}
+
+	resp_begin_html(200, NULL);
+	resp_searchform(req);
+
+	vp = html_alloc(opts);
+
+	if (NULL != mdoc)
+		html_mdoc(vp, mdoc);
+	else
+		html_man(vp, man);
+
+	puts("</BODY>\n"
+	     "</HTML>");
+
+	html_free(vp);
+	mparse_free(mp);
+}
+
+static void
+pg_show(const struct req *req, char *path)
+{
+	struct manpaths	 ps;
+	size_t		 sz;
+	char		*sub;
+	char		 file[MAXPATHLEN];
+	const char	*cp;
+	int		 rc, catm;
+	unsigned int	 vol, rec, mr;
+	DB		*idx;
+	DBT		 key, val;
+
+	idx = NULL;
+
+	/* Parse out mroot, volume, and record from the path. */
+
+	if (NULL == path || NULL == (sub = strchr(path, '/'))) {
+		resp_error400();
+		return;
+	} 
+	*sub++ = '\0';
+	if ( ! atou(path, &mr)) {
+		resp_error400();
+		return;
+	}
+	path = sub;
+	if (NULL == (sub = strchr(path, '/'))) {
+		resp_error400();
+		return;
+	}
+	*sub++ = '\0';
+	if ( ! atou(path, &vol) || ! atou(sub, &rec)) {
+		resp_error400();
+		return;
+	} else if (mr >= (unsigned int)req->psz) {
+		resp_error400();
+		return;
+	}
+
+	/*
+	 * Begin by chdir()ing into the manroot.
+	 * This way we can pick up the database files, which are
+	 * relative to the manpath root.
+	 */
+
+	if (-1 == chdir(req->p[(int)mr].path)) {
+		perror(req->p[(int)mr].path);
+		resp_baddb();
+		return;
+	}
+
+	memset(&ps, 0, sizeof(struct manpaths));
+	manpath_manconf(&ps, "etc/catman.conf");
+
+	if (vol >= (unsigned int)ps.sz) {
+		resp_error400();
+		goto out;
+	}
+
+	sz = strlcpy(file, ps.paths[vol], MAXPATHLEN);
+	assert(sz < MAXPATHLEN);
+	strlcat(file, "/", MAXPATHLEN);
+	strlcat(file, MANDOC_IDX, MAXPATHLEN);
+
+	/* Open the index recno(3) database. */
+
+	idx = dbopen(file, O_RDONLY, 0, DB_RECNO, NULL);
+	if (NULL == idx) {
+		perror(file);
+		resp_baddb();
+		goto out;
+	}
+
+	key.data = &rec;
+	key.size = 4;
+
+	if (0 != (rc = (*idx->get)(idx, &key, &val, 0))) {
+		rc < 0 ? resp_baddb() : resp_error400();
+		goto out;
+	} else if (0 == val.size) {
+		resp_baddb();
+		goto out;
+	}
+
+	cp = (char *)val.data;
+	catm = 'c' == *cp++;
+
+	if (NULL == memchr(cp, '\0', val.size - 1)) 
+		resp_baddb();
+	else {
+ 		file[(int)sz] = '\0';
+ 		strlcat(file, "/", MAXPATHLEN);
+ 		strlcat(file, cp, MAXPATHLEN);
+		if (catm) 
+			catman(req, file);
+		else
+			format(req, file);
+	}
+out:
+	if (idx)
+		(*idx->close)(idx);
+	manpath_free(&ps);
+}
+
+static void
+pg_search(const struct req *req, char *path)
+{
+	size_t		  tt;
+	struct manpaths	  ps;
+	int		  i, sz, rc;
+	const char	 *ep, *start;
+	char		**cp;
+	struct opts	  opt;
+	struct expr	 *expr;
+
+	if (req->q.manroot < 0 || 0 == req->psz) {
+		resp_search(NULL, 0, (void *)req);
+		return;
+	}
+
 	memset(&opt, 0, sizeof(struct opts));
-	/*opt.types = TYPE_NAME | TYPE_DESC;
-	apropos_search(&opt, req->fields[i].val, NULL, pg_searchres);*/
+
+	ep 	 = req->q.expr;
+	opt.arch = req->q.arch;
+	opt.cat  = req->q.sec;
+	rc 	 = -1;
+	sz 	 = 0;
+	cp	 = NULL;
+
+	/*
+	 * Begin by chdir()ing into the root of the manpath.
+	 * This way we can pick up the database files, which are
+	 * relative to the manpath root.
+	 */
+
+	assert(req->q.manroot < (int)req->psz);
+	if (-1 == (chdir(req->p[req->q.manroot].path))) {
+		perror(req->p[req->q.manroot].path);
+		resp_search(NULL, 0, (void *)req);
+		return;
+	}
+
+	memset(&ps, 0, sizeof(struct manpaths));
+	manpath_manconf(&ps, "etc/catman.conf");
+
+	/*
+	 * Poor man's tokenisation: just break apart by spaces.
+	 * Yes, this is half-ass.  But it works for now.
+	 */
+
+	while (ep && isspace((unsigned char)*ep))
+		ep++;
+
+	while (ep && '\0' != *ep) {
+		cp = mandoc_realloc(cp, (sz + 1) * sizeof(char *));
+		start = ep;
+		while ('\0' != *ep && ! isspace((unsigned char)*ep))
+			ep++;
+		cp[sz] = mandoc_malloc((ep - start) + 1);
+		memcpy(cp[sz], start, ep - start);
+		cp[sz++][ep - start] = '\0';
+		while (isspace((unsigned char)*ep))
+			ep++;
+	}
+
+	/*
+	 * Pump down into apropos backend.
+	 * The resp_search() function is called with the results.
+	 */
+
+	expr = req->q.whatis ? 
+		termcomp(sz, cp, &tt) : exprcomp(sz, cp, &tt);
+
+	if (NULL != expr)
+		rc = apropos_search
+			(ps.sz, ps.paths, &opt,
+			 expr, tt, (void *)req, resp_search);
+
+	/* ...unless errors occured. */
+
+	if (0 == rc)
+		resp_baddb();
+	else if (-1 == rc)
+		resp_search(NULL, 0, (void *)req);
+
+	for (i = 0; i < sz; i++)
+		free(cp[i]);
+
+	free(cp);
+	exprfree(expr);
+	manpath_free(&ps);
 }
 
 int
 main(void)
 {
 	int		 i;
+	char		 buf[MAXPATHLEN];
+	DIR		*cwd;
 	struct req	 req;
-	char		*p;
-	char		*path, *subpath, *suffix;
+	char		*p, *path, *subpath;
 
+	/* Scan our run-time environment. */
+
+	if (NULL == (cache = getenv("CACHE_DIR")))
+		cache = "/cache/man.cgi";
+
+	if (NULL == (progname = getenv("SCRIPT_NAME")))
+		progname = "";
+
+	if (NULL == (css = getenv("CSS_DIR")))
+		css = "";
+
+	if (NULL == (host = getenv("HTTP_HOST")))
+		host = "localhost";
+
+	/*
+	 * First we change directory into the cache directory so that
+	 * subsequent scanning for manpath directories is rooted
+	 * relative to the same position.
+	 */
+
+	if (-1 == chdir(cache)) {
+		perror(cache);
+		resp_bad();
+		return(EXIT_FAILURE);
+	} else if (NULL == (cwd = opendir(cache))) {
+		perror(cache);
+		resp_bad();
+		return(EXIT_FAILURE);
+	} 
+
 	memset(&req, 0, sizeof(struct req));
 
+	strlcpy(buf, ".", MAXPATHLEN);
+	pathgen(cwd, buf, &req);
+	closedir(cwd);
+
+	/* Next parse out the query string. */
+
 	if (NULL != (p = getenv("QUERY_STRING")))
-		kval_parse(&req.fields, &req.fieldsz, p);
+		http_parse(&req, p);
 
-	suffix = subpath = path = NULL;
+	/*
+	 * Now juggle paths to extract information.
+	 * We want to extract our filetype (the file suffix), the
+	 * initial path component, then the trailing component(s).
+	 * Start with leading subpath component. 
+	 */
 
-	req.media = MEDIA_HTML;
+	subpath = path = NULL;
 	req.page = PAGE__MAX;
 
 	if (NULL == (path = getenv("PATH_INFO")) || '\0' == *path)
 		req.page = PAGE_INDEX;
+
 	if (NULL != path && '/' == *path && '\0' == *++path)
 		req.page = PAGE_INDEX;
 
-	if (NULL != path && NULL != (suffix = strrchr(path, '.')))
-		if (NULL != suffix && NULL == strchr(suffix, '/'))
-			*suffix++ = '\0';
+	/* Strip file suffix. */
 
+	if (NULL != path && NULL != (p = strrchr(path, '.')))
+		if (NULL != p && NULL == strchr(p, '/'))
+			*p++ = '\0';
+
+	/* Resolve subpath component. */
+
 	if (NULL != path && NULL != (subpath = strchr(path, '/')))
-			*subpath++ = '\0';
+		*subpath++ = '\0';
 
-	if (NULL != suffix && '\0' != *suffix)
-		for (i = 0; i < (int)MEDIA__MAX; i++)
-			if (0 == strcmp(medias[i], suffix)) {
-				req.media = (enum media)i;
-				break;
-			}
+	/* Map path into one we recognise. */
 
 	if (NULL != path && '\0' != *path)
 		for (i = 0; i < (int)PAGE__MAX; i++) 
@@ -294,6 +1062,8 @@ main(void)
 				break;
 			}
 
+	/* Route pages. */
+
 	switch (req.page) {
 	case (PAGE_INDEX):
 		pg_index(&req, subpath);
@@ -301,11 +1071,140 @@ main(void)
 	case (PAGE_SEARCH):
 		pg_search(&req, subpath);
 		break;
+	case (PAGE_SHOW):
+		pg_show(&req, subpath);
+		break;
 	default:
-		/* Blah */
+		resp_error404(path);
 		break;
 	}
 
-	kval_free(req.fields, req.fieldsz);
+	for (i = 0; i < (int)req.psz; i++) {
+		free(req.p[i].path);
+		free(req.p[i].name);
+	}
+
+	free(req.p);
 	return(EXIT_SUCCESS);
+}
+
+static int
+cmp(const void *p1, const void *p2)
+{
+
+	return(strcasecmp(((const struct res *)p1)->title,
+				((const struct res *)p2)->title));
+}
+
+/*
+ * Check to see if an "etc" path consists of a catman.conf file.  If it
+ * does, that means that the path contains a tree created by catman(8)
+ * and should be used for indexing.
+ */
+static int
+pathstop(DIR *dir)
+{
+	struct dirent	*d;
+
+	while (NULL != (d = readdir(dir)))
+		if (DT_REG == d->d_type)
+			if (0 == strcmp(d->d_name, "catman.conf"))
+				return(1);
+
+	return(0);
+}
+
+/*
+ * Scan for indexable paths.
+ * This adds all paths with "etc/catman.conf" to the buffer.
+ */
+static void
+pathgen(DIR *dir, char *path, struct req *req)
+{
+	struct dirent	*d;
+	char		*cp;
+	DIR		*cd;
+	int		 rc;
+	size_t		 sz, ssz;
+
+	sz = strlcat(path, "/", MAXPATHLEN);
+	if (sz >= MAXPATHLEN) {
+		fprintf(stderr, "%s: Path too long", path);
+		return;
+	} 
+
+	/* 
+	 * First, scan for the "etc" directory.
+	 * If it's found, then see if it should cause us to stop.  This
+	 * happens when a catman.conf is found in the directory.
+	 */
+
+	rc = 0;
+	while (0 == rc && NULL != (d = readdir(dir))) {
+		if (DT_DIR != d->d_type || strcmp(d->d_name, "etc"))
+			continue;
+
+		path[(int)sz] = '\0';
+		ssz = strlcat(path, d->d_name, MAXPATHLEN);
+
+		if (ssz >= MAXPATHLEN) {
+			fprintf(stderr, "%s: Path too long", path);
+			return;
+		} else if (NULL == (cd = opendir(path))) {
+			perror(path);
+			return;
+		} 
+		
+		rc = pathstop(cd);
+		closedir(cd);
+	}
+
+	if (rc > 0) {
+		/* This also strips the trailing slash. */
+		path[(int)--sz] = '\0';
+		req->p = mandoc_realloc
+			(req->p, 
+			 (req->psz + 1) * sizeof(struct paths));
+		/*
+		 * Strip out the leading "./" unless we're just a ".",
+		 * in which case use an empty string as our name.
+		 */
+		req->p[(int)req->psz].path = mandoc_strdup(path);
+		req->p[(int)req->psz].name = 
+			cp = mandoc_strdup(path + (1 == sz ? 1 : 2));
+		req->psz++;
+		/* 
+		 * The name is just the path with all the slashes taken
+		 * out of it.  Simple but effective. 
+		 */
+		for ( ; '\0' != *cp; cp++) 
+			if ('/' == *cp)
+				*cp = ' ';
+		return;
+	} 
+
+	/*
+	 * If no etc/catman.conf was found, recursively enter child
+	 * directory and continue scanning.
+	 */
+
+	rewinddir(dir);
+	while (NULL != (d = readdir(dir))) {
+		if (DT_DIR != d->d_type || '.' == d->d_name[0])
+			continue;
+
+		path[(int)sz] = '\0';
+		ssz = strlcat(path, d->d_name, MAXPATHLEN);
+
+		if (ssz >= MAXPATHLEN) {
+			fprintf(stderr, "%s: Path too long", path);
+			return;
+		} else if (NULL == (cd = opendir(path))) {
+			perror(path);
+			return;
+		}
+
+		pathgen(cd, path, req);
+		closedir(cd);
+	}
 }