===================================================================
RCS file: /cvs/mandoc/cgi.c,v
retrieving revision 1.2
retrieving revision 1.63
diff -u -p -r1.2 -r1.63
--- mandoc/cgi.c	2011/11/09 22:05:56	1.2
+++ mandoc/cgi.c	2014/07/11 22:27:35	1.63
@@ -1,188 +1,296 @@
-/*	$Id: cgi.c,v 1.2 2011/11/09 22:05:56 kristaps Exp $ */
-#include <assert.h>
+/*	$Id: cgi.c,v 1.63 2014/07/11 22:27:35 schwarze Exp $ */
+/*
+ * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2014 Ingo Schwarze <schwarze@usta.de>
+ *
+ * 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 <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
-#include <regex.h>
+#include <limits.h>
 #include <stdio.h>
-#include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
-#include "apropos.h"
 #include "mandoc.h"
+#include "mandoc_aux.h"
+#include "main.h"
+#include "manpath.h"
+#include "mansearch.h"
 
-/*
- * The page a request is trying to make.
- */
 enum	page {
 	PAGE_INDEX,
 	PAGE_SEARCH,
+	PAGE_SHOW,
 	PAGE__MAX
 };
 
 /*
- * Key-value pair.  
- * Both key and val are on the heap.
+ * A query as passed to the search function.
  */
-struct	kval {
-	char		*key;
-	char		*val;
+struct	query {
+	const char	*manpath; /* desired manual directory */
+	const char	*arch; /* architecture */
+	const char	*sec; /* manual section */
+	const char	*expr; /* unparsed expression string */
+	int		 legacy; /* whether legacy mode */
 };
 
-/*
- * The media type, determined by suffix, of the requesting or responding
- * context.
- */
-enum	media {
-	MEDIA_HTML,
-	MEDIA__MAX
-};
-
-/*
- * An HTTP request.
- */
 struct	req {
-	struct kval	*fields; /* query fields */
-	size_t		 fieldsz;
-	enum media	 media;
-	enum page	 page;
+	struct query	  q;
+	char		**p; /* array of available manpaths */
+	size_t		  psz; /* number of available manpaths */
+	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	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	void		 pathgen(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_begin_html(int, const char *);
+static	void		 resp_begin_http(int, const char *);
+static	void		 resp_end_html(void);
+static	void		 resp_error_badrequest(const char *);
+static	void		 resp_error_internal(void);
+static	void		 resp_error_notfound(const char *);
+static	void		 resp_index(const struct req *);
+static	void		 resp_noresult(const struct req *,
+				const char *);
+static	void		 resp_search(const struct req *,
+				struct manpage *, size_t);
+static	void		 resp_searchform(const struct req *);
 
+static	const char	 *scriptname; /* CGI script name */
+static	const char	 *mandir; /* contains all manpath directories */
+static	const char	 *cssdir; /* css directory */
+static	const char	 *httphost; /* hostname used in the URIs */
+
 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 */
-};
+/*
+ * Print a character, escaping HTML along the way.
+ * This will pass non-ASCII straight to output: be warned!
+ */
+static void
+html_putchar(char c)
+{
 
-#if 0
+	switch (c) {
+	case ('"'):
+		printf("&quote;");
+		break;
+	case ('&'):
+		printf("&amp;");
+		break;
+	case ('>'):
+		printf("&gt;");
+		break;
+	case ('<'):
+		printf("&lt;");
+		break;
+	default:
+		putchar((unsigned char)c);
+		break;
+	}
+}
+
 static void
-html_printtext(const char *p)
+http_printquery(const struct req *req)
 {
-	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;
-		}
+	if (NULL != req->q.manpath) {
+		printf("&manpath=");
+		http_print(req->q.manpath);
+	}
+	if (NULL != req->q.sec) {
+		printf("&sec=");
+		http_print(req->q.sec);
+	}
+	if (NULL != req->q.arch) {
+		printf("&arch=");
+		http_print(req->q.arch);
+	}
+	if (NULL != req->q.expr) {
+		printf("&expr=");
+		http_print(req->q.expr ? req->q.expr : "");
+	}
 }
-#endif
 
 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);
+	if (NULL != req->q.manpath) {
+		printf("&amp;manpath=");
+		html_print(req->q.manpath);
 	}
-	free(p);
+	if (NULL != req->q.sec) {
+		printf("&amp;sec=");
+		html_print(req->q.sec);
+	}
+	if (NULL != req->q.arch) {
+		printf("&amp;arch=");
+		html_print(req->q.arch);
+	}
+	if (NULL != req->q.expr) {
+		printf("&amp;expr=");
+		html_print(req->q.expr);
+	}
 }
 
+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;
+	int		 legacy;
 
-	cur = 0;
+	memset(&req->q, 0, sizeof(struct query));
+	req->q.manpath = req->p[0];
 
-	while (p && '\0' != *p) {
-		while (' ' == *p)
-			p++;
-
+	legacy = -1;
+	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"))
+			req->q.manpath = val;
+		else if (0 == strcmp(key, "apropos"))
+			legacy = 0 == strcmp(val, "0");
+	}
 
-		/* Just abort handling. */
+	/* Test for old man.cgi compatibility mode. */
 
-		if ( ! kval_decode(key))
-			return;
-		if ( ! kval_decode(val))
-			return;
+	req->q.legacy = legacy > 0;
 
-		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;
+}
+
+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];
+	char		*q;
 	int              c;
 
 	hex[2] = '\0';
 
-	for ( ; '\0' != *p; p++) {
+	q = p;
+	for ( ; '\0' != *p; p++, q++) {
 		if ('%' == *p) {
 			if ('\0' == (hex[0] = *(p + 1)))
 				return(0);
@@ -193,61 +301,538 @@ kval_decode(char *p)
 			if ('\0' == c)
 				return(0);
 
-			*p = (char)c;
-			memmove(p + 1, p + 3, strlen(p + 3) + 1);
+			*q = (char)c;
+			p += 2;
 		} else
-			*p = '+' == *p ? ' ' : *p;
+			*q = '+' == *p ? ' ' : *p;
 	}
 
-	*p = '\0';
+	*q = '\0';
 	return(1);
 }
 
+static void
+resp_begin_http(int code, const char *msg)
+{
 
+	if (200 != code)
+		printf("Status: %d %s\r\n", code, msg);
+
+	printf("Content-Type: text/html; charset=utf-8\r\n"
+	     "Cache-Control: no-cache\r\n"
+	     "Pragma: no-cache\r\n"
+	     "\r\n");
+
+	fflush(stdout);
+}
+
+static void
+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",
+	       cssdir, cssdir);
+}
+
+static void
+resp_end_html(void)
+{
+
+	puts("</BODY>\n"
+	     "</HTML>");
+}
+
+static void
+resp_searchform(const struct req *req)
+{
+	int		 i;
+
+	puts("<!-- Begin search form. //-->");
+	printf("<DIV ID=\"mancgi\">\n"
+	       "<FORM ACTION=\"%s/search\" METHOD=\"get\">\n"
+	       "<FIELDSET>\n"
+	       "<LEGEND>Search Parameters</LEGEND>\n"
+	       "<INPUT TYPE=\"submit\" "
+	       " VALUE=\"Search\"> for manuals matching \n"
+	       "<INPUT TYPE=\"text\" NAME=\"expr\" VALUE=\"",
+	       scriptname);
+	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(", in <SELECT NAME=\"manpath\">");
+		for (i = 0; i < (int)req->psz; i++) {
+			printf("<OPTION ");
+			if (NULL == req->q.manpath ? 0 == i :
+			    0 == strcmp(req->q.manpath, req->p[i]))
+				printf("SELECTED=\"selected\" ");
+			printf("VALUE=\"");
+			html_print(req->p[i]);
+			printf("\">");
+			html_print(req->p[i]);
+			puts("</OPTION>");
+		}
+		puts("</SELECT>");
+	}
+	puts("&mdash;\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);
+	puts("<H1>\n"
+	     "Online manuals with "
+	     "<A HREF=\"http://mdocml.bsd.lv/\">mandoc</A>\n"
+	     "</H1>");
+	resp_searchform(req);
+	puts("<P>\n"
+	     "This web interface is documented in the "
+	     "<A HREF=\"search?expr=Nm~^man\\.cgi$&amp;sec=8\">"
+	     "man.cgi</A> manual, and the "
+	     "<A HREF=\"search?expr=Nm~^apropos$&amp;sec=1\">"
+	     "apropos</A> manual explains the query syntax.\n"
+	     "</P>");
+	resp_end_html();
+}
+
+static void
+resp_noresult(const struct req *req, const char *msg)
+{
+	resp_begin_html(200, NULL);
+	resp_searchform(req);
+	puts("<P>");
+	puts(msg);
+	puts("</P>");
+	resp_end_html();
+}
+
+static void
+resp_error_badrequest(const char *msg)
+{
+
+	resp_begin_html(400, "Bad Request");
+	puts("<H1>Bad Request</H1>\n"
+	     "<P>\n");
+	puts(msg);
+	printf("Try again from the\n"
+	       "<A HREF=\"%s\">main page</A>.\n"
+	       "</P>", scriptname);
+	resp_end_html();
+}
+
+static void
+resp_error_notfound(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\">main page</A>.\n"
+	       "</P>", scriptname);
+	resp_end_html();
+}
+
+static void
+resp_error_internal(void)
+{
+	resp_begin_html(500, "Internal Server Error");
+	puts("<P>Internal Server Error</P>");
+	resp_end_html();
+}
+
+static void
+resp_search(const struct req *req, struct manpage *r, size_t sz)
+{
+	size_t		 i;
+
+	if (1 == sz) {
+		/*
+		 * If we have just one result, then jump there now
+		 * without any delay.
+		 */
+		printf("Status: 303 See Other\r\n");
+		printf("Location: http://%s%s/show/%s/%s?",
+		    httphost, scriptname, req->q.manpath, r[0].file);
+		http_printquery(req);
+		printf("\r\n"
+		     "Content-Type: text/html; charset=utf-8\r\n"
+		     "\r\n");
+		return;
+	}
+
+	qsort(r, sz, sizeof(struct manpage), cmp);
+
+	resp_begin_html(200, NULL);
+	resp_searchform(req);
+	puts("<DIV CLASS=\"results\">");
+	puts("<TABLE>");
+
+	for (i = 0; i < sz; i++) {
+		printf("<TR>\n"
+		       "<TD CLASS=\"title\">\n"
+		       "<A HREF=\"%s/show/%s/%s?", 
+		    scriptname, req->q.manpath, r[i].file);
+		html_printquery(req);
+		printf("\">");
+		html_print(r[i].names);
+		printf("</A>\n"
+		       "</TD>\n"
+		       "<TD CLASS=\"desc\">");
+		html_print(r[i].output);
+		puts("</TD>\n"
+		     "</TR>");
+	}
+
+	puts("</TABLE>\n"
+	     "</DIV>");
+	resp_end_html();
+}
+
 /* ARGSUSED */
 static void
 pg_index(const struct req *req, char *path)
 {
 
+	resp_index(req);
 }
 
-#if 0
 static void
-pg_searchres(struct rec *recs, size_t sz, void *arg)
+catman(const struct req *req, const char *file)
 {
+	FILE		*f;
+	size_t		 len;
 	int		 i;
-	const char	*pg;
+	char		*p;
+	int		 italic, bold;
 
-	if (NULL == (pg = getenv("SCRIPT_NAME")))
-		pg = "";
+	if (NULL == (f = fopen(file, "r"))) {
+		resp_error_badrequest(
+		    "You specified an invalid manual file.");
+		return;
+	}
 
-	for (i = 0; i < (int)sz; i++) {
-		printf("<A HREF=\"%s/show/%u.html\">", 
-				pg, recs[i].rec);
-		html_printtext(recs[i].title);
-		putchar('(');
-		html_printtext(recs[i].cat);
-		puts(")</A>");
+	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);
 }
-#endif
 
 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[PATH_MAX + 128];
+
+	if (-1 == (fd = open(file, O_RDONLY, 0))) {
+		resp_error_badrequest(
+		    "You specified an invalid manual file.");
+		return;
+	}
+
+	mp = mparse_alloc(MPARSE_SO, MANDOCLEVEL_FATAL, NULL,
+	    req->q.manpath);
+	rc = mparse_readfd(mp, fd, file);
+	close(fd);
+
+	if (rc >= MANDOCLEVEL_FATAL) {
+		fprintf(stderr, "fatal mandoc error: %s/%s\n",
+		    req->q.manpath, file);
+		resp_error_internal();
+		return;
+	}
+
+	snprintf(opts, sizeof(opts),
+	    "fragment,man=%s/search?sec=%%S&expr=Nm~^%%N$",
+	    scriptname);
+
+	mparse_result(mp, &mdoc, &man, NULL);
+	if (NULL == man && NULL == mdoc) {
+		fprintf(stderr, "fatal mandoc error: %s/%s\n",
+		    req->q.manpath, file);
+		resp_error_internal();
+		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)
+{
+	char		*sub;
+
+	if (NULL == path || NULL == (sub = strchr(path, '/'))) {
+		resp_error_badrequest(
+		    "You did not specify a page to show.");
+		return;
+	} 
+	*sub++ = '\0';
+
+	/*
+	 * Begin by chdir()ing into the manpath.
+	 * This way we can pick up the database files, which are
+	 * relative to the manpath root.
+	 */
+
+	if (-1 == chdir(path)) {
+		resp_error_badrequest(
+		    "You specified an invalid manpath.");
+		return;
+	}
+
+	if ('c' == *sub)
+		catman(req, sub);
+	else
+		format(req, sub);
+}
+
+static void
 pg_search(const struct req *req, char *path)
 {
-	int		 i;
-	struct opts	 opt;
+	struct mansearch	  search;
+	struct manpaths		  paths;
+	struct manpage		 *res;
+	char			**cp;
+	const char		 *ep, *start;
+	size_t			  ressz;
+	int			  i, sz;
 
-	for (i = 0; i < (int)req->fieldsz; i++)
-		if (0 == strcmp(req->fields[i].key, "key"))
-			break;
+	/*
+	 * 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.
+	 */
 
-	if (i == (int)req->fieldsz)
+	if (-1 == (chdir(req->q.manpath))) {
+		resp_error_badrequest(
+		    "You specified an invalid manpath.");
 		return;
+	}
 
-	memset(&opt, 0, sizeof(struct opts));
-	/*opt.types = TYPE_NAME | TYPE_DESC;
-	apropos_search(&opt, req->fields[i].val, NULL, pg_searchres);*/
+	search.arch = req->q.arch;
+	search.sec = req->q.sec;
+	search.deftype = TYPE_Nm | TYPE_Nd;
+	search.flags = 0;
+
+	paths.sz = 1;
+	paths.paths = mandoc_malloc(sizeof(char *));
+	paths.paths[0] = mandoc_strdup(".");
+
+	/*
+	 * Poor man's tokenisation: just break apart by spaces.
+	 * Yes, this is half-ass.  But it works for now.
+	 */
+
+	ep = req->q.expr;
+	while (ep && isspace((unsigned char)*ep))
+		ep++;
+
+	sz = 0;
+	cp = NULL;
+	while (ep && '\0' != *ep) {
+		cp = mandoc_reallocarray(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++;
+	}
+
+	if (0 == mansearch(&search, &paths, sz, cp, "Nd", &res, &ressz))
+		resp_noresult(req, "You entered an invalid query.");
+	else if (0 == ressz)
+		resp_noresult(req, "No results found.");
+	else
+		resp_search(req, res, ressz);
+
+	for (i = 0; i < sz; i++)
+		free(cp[i]);
+	free(cp);
+
+	for (i = 0; i < (int)ressz; i++) {
+		free(res[i].file);
+		free(res[i].names);
+		free(res[i].output);
+	}
+	free(res);
+
+	free(paths.paths[0]);
+	free(paths.paths);
 }
 
 int
@@ -255,37 +840,65 @@ main(void)
 {
 	int		 i;
 	struct req	 req;
-	char		*p;
-	char		*path, *subpath, *suffix;
+	char		*querystring, *path, *subpath;
 
+	/* Scan our run-time environment. */
+
+	if (NULL == (mandir = getenv("MAN_DIR")))
+		mandir = "/man";
+
+	if (NULL == (scriptname = getenv("SCRIPT_NAME")))
+		scriptname = "";
+
+	if (NULL == (cssdir = getenv("CSS_DIR")))
+		cssdir = "";
+
+	if (NULL == (httphost = getenv("HTTP_HOST")))
+		httphost = "localhost";
+
+	/*
+	 * First we change directory into the mandir so that
+	 * subsequent scanning for manpath directories is rooted
+	 * relative to the same position.
+	 */
+
+	if (-1 == chdir(mandir)) {
+		fprintf(stderr, "MAN_DIR: %s: %s\n",
+		    mandir, strerror(errno));
+		resp_error_internal();
+		return(EXIT_FAILURE);
+	} 
+
 	memset(&req, 0, sizeof(struct req));
+	pathgen(&req);
 
-	if (NULL != (p = getenv("QUERY_STRING")))
-		kval_parse(&req.fields, &req.fieldsz, p);
+	/* Next parse out the query string. */
 
-	suffix = subpath = path = NULL;
+	if (NULL != (querystring = getenv("QUERY_STRING")))
+		http_parse(&req, querystring);
 
-	req.media = MEDIA_HTML;
+	/*
+	 * 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. 
+	 */
+
+	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';
+	/* 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 +907,8 @@ main(void)
 				break;
 			}
 
+	/* Route pages. */
+
 	switch (req.page) {
 	case (PAGE_INDEX):
 		pg_index(&req, subpath);
@@ -301,11 +916,46 @@ main(void)
 	case (PAGE_SEARCH):
 		pg_search(&req, subpath);
 		break;
+	case (PAGE_SHOW):
+		pg_show(&req, subpath);
+		break;
 	default:
-		/* Blah */
+		resp_error_notfound(path);
 		break;
 	}
 
-	kval_free(req.fields, req.fieldsz);
+	for (i = 0; i < (int)req.psz; i++)
+		free(req.p[i]);
+	free(req.p);
 	return(EXIT_SUCCESS);
+}
+
+static int
+cmp(const void *p1, const void *p2)
+{
+
+	return(strcasecmp(((const struct manpage *)p1)->names,
+	    ((const struct manpage *)p2)->names));
+}
+
+/*
+ * Scan for indexable paths.
+ */
+static void
+pathgen(struct req *req)
+{
+	FILE	*fp;
+	char	*dp;
+	size_t	 dpsz;
+
+	if (NULL == (fp = fopen("manpath.conf", "r")))
+		return;
+
+	while (NULL != (dp = fgetln(fp, &dpsz))) {
+		if ('\n' == dp[dpsz - 1])
+			dpsz--;
+		req->p = mandoc_realloc(req->p,
+		    (req->psz + 1) * sizeof(char *));
+		req->p[req->psz++] = mandoc_strndup(dp, dpsz);
+	}
 }