]> git.cameronkatri.com Git - mandoc.git/blobdiff - cgi.c
Make the calltree a bit easier to understand by giving the
[mandoc.git] / cgi.c
diff --git a/cgi.c b/cgi.c
index 8609b8783914d4e45a32e1f7e5b09aef12368acc..00f033ef4386c513823704cdf0528d2e708c0b70 100644 (file)
--- a/cgi.c
+++ b/cgi.c
@@ -1,4 +1,4 @@
-/*     $Id: cgi.c,v 1.57 2014/07/09 12:09:04 schwarze Exp $ */
+/*     $Id: cgi.c,v 1.72 2014/07/13 12:55:45 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2014 Ingo Schwarze <schwarze@usta.de>
@@ -20,6 +20,7 @@
 #endif
 
 #include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
 #include <stdio.h>
 #include "main.h"
 #include "manpath.h"
 #include "mansearch.h"
-
-enum   page {
-       PAGE_INDEX,
-       PAGE_SEARCH,
-       PAGE_SHOW,
-       PAGE__MAX
-};
+#include "cgi.h"
 
 /*
  * A query as passed to the search function.
  */
 struct query {
-       const char      *manroot; /* manual root directory */
+       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 */
+       int              equal; /* match whole names, not substrings */
 };
 
 struct req {
-       struct query     q;
-       char            **p; /* array of available manroots */
-       size_t           psz; /* number of available manroots */
-       enum page        page;
+       struct query      q;
+       char            **p; /* array of available manpaths */
+       size_t            psz; /* number of available manpaths */
 };
 
 static void             catman(const struct req *, const char *);
@@ -70,31 +64,56 @@ 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 *);
-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             pg_error_badrequest(const char *);
+static void             pg_error_internal(void);
+static void             pg_index(const struct req *);
+static void             pg_noresult(const struct req *, const char *);
+static void             pg_search(const struct req *);
+static void             pg_searchres(const struct req *,
+                               struct manpage *, size_t);
+static void             pg_show(const struct req *, 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(const struct req *,
-                               struct manpage *, size_t);
 static void             resp_searchform(const struct req *);
+static void             resp_show(const struct req *, const char *);
 
-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       *scriptname; /* CGI script name */
+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 int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
+static const char *const sec_numbers[] = {
+    "0", "1", "2", "3", "3p", "4", "5", "6", "7", "8", "9"
 };
+static const char *const sec_names[] = {
+    "All Sections",
+    "1 - General Commands",
+    "2 - System Calls",
+    "3 - Subroutines",
+    "3p - Perl Subroutines",
+    "4 - Special Files",
+    "5 - File Formats",
+    "6 - Games",
+    "7 - Macros and Conventions",
+    "8 - Maintenance Commands",
+    "9 - Kernel Interface"
+};
+static const int sec_MAX = sizeof(sec_names) / sizeof(char *);
+
+static const char *const arch_names[] = {
+    "amd64",       "alpha",       "armish",      "armv7",
+    "aviion",      "hppa",        "hppa64",      "i386",
+    "ia64",        "landisk",     "loongson",    "luna88k",
+    "macppc",      "mips64",      "octeon",      "sgi",
+    "socppc",      "solbourne",   "sparc",       "sparc64",
+    "vax",         "zaurus",
+    "amiga",       "arc",         "arm32",       "atari",
+    "beagle",      "cats",        "hp300",       "mac68k",
+    "mvme68k",     "mvme88k",     "mvmeppc",     "palm",
+    "pc532",       "pegasos",     "pmax",        "powerpc",
+    "sun3",        "wgrisc",      "x68k"
+};
+static const int arch_MAX = sizeof(arch_names) / sizeof(char *);
 
 /*
  * Print a character, escaping HTML along the way.
@@ -127,9 +146,9 @@ static void
 http_printquery(const struct req *req)
 {
 
-       if (NULL != req->q.manroot) {
+       if (NULL != req->q.manpath) {
                printf("&manpath=");
-               http_print(req->q.manroot);
+               http_print(req->q.manpath);
        }
        if (NULL != req->q.sec) {
                printf("&sec=");
@@ -140,18 +159,20 @@ http_printquery(const struct req *req)
                http_print(req->q.arch);
        }
        if (NULL != req->q.expr) {
-               printf("&expr=");
-               http_print(req->q.expr ? req->q.expr : "");
+               printf("&query=");
+               http_print(req->q.expr);
        }
+       if (0 == req->q.equal)
+               printf("&apropos=1");
 }
 
 static void
 html_printquery(const struct req *req)
 {
 
-       if (NULL != req->q.manroot) {
+       if (NULL != req->q.manpath) {
                printf("&amp;manpath=");
-               html_print(req->q.manroot);
+               html_print(req->q.manpath);
        }
        if (NULL != req->q.sec) {
                printf("&amp;sec=");
@@ -162,9 +183,11 @@ html_printquery(const struct req *req)
                html_print(req->q.arch);
        }
        if (NULL != req->q.expr) {
-               printf("&amp;expr=");
-               html_print(req->q.expr ? req->q.expr : "");
+               printf("&amp;query=");
+               html_print(req->q.expr);
        }
+       if (0 == req->q.equal)
+               printf("&amp;apropos=1");
 }
 
 static void
@@ -200,12 +223,11 @@ static void
 http_parse(struct req *req, char *p)
 {
        char            *key, *val;
-       int              legacy;
 
        memset(&req->q, 0, sizeof(struct query));
-       req->q.manroot = req->p[0];
+       req->q.manpath = req->p[0];
+       req->q.equal = 1;
 
-       legacy = -1;
        while ('\0' != *p) {
                key = p;
                val = NULL;
@@ -226,37 +248,21 @@ http_parse(struct req *req, char *p)
                if (NULL != val && ! http_decode(val))
                        break;
 
-               if (0 == strcmp(key, "expr"))
-                       req->q.expr = val;
-               else if (0 == strcmp(key, "query"))
+               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.manroot = val;
+                       req->q.manpath = val;
                else if (0 == strcmp(key, "apropos"))
-                       legacy = 0 == strcmp(val, "0");
+                       req->q.equal = !strcmp(val, "0");
+               else if (0 == strcmp(key, "sec") ||
+                        0 == strcmp(key, "sektion")) {
+                       if (strcmp(val, "0"))
+                               req->q.sec = val;
+               } else if (0 == strcmp(key, "arch")) {
+                       if (strcmp(val, "default"))
+                               req->q.arch = val;
+               }
        }
-
-       /* Test for old man.cgi compatibility mode. */
-
-       req->q.legacy = legacy > 0;
-
-       /* 
-        * Section "0" means no section when in legacy mode.
-        * For some man.cgi scripts, "default" arch is none.
-        */
-
-       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
@@ -282,11 +288,13 @@ static int
 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);
@@ -297,13 +305,13 @@ http_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);
 }
 
@@ -312,12 +320,12 @@ resp_begin_http(int code, const char *msg)
 {
 
        if (200 != code)
-               printf("Status: %d %s\n", code, msg);
+               printf("Status: %d %s\r\n", code, msg);
 
-       puts("Content-Type: text/html; charset=utf-8\n"
-            "Cache-Control: no-cache\n"
-            "Pragma: no-cache\n"
-            "");
+       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);
 }
@@ -339,10 +347,11 @@ resp_begin_html(int code, const char *msg)
               " 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"
+              "<TITLE>%s</TITLE>\n"
               "</HEAD>\n"
               "<BODY>\n"
-              "<!-- Begin page content. //-->\n", css, css);
+              "<!-- Begin page content. //-->\n",
+              CSS_DIR, CSS_DIR, CUSTOMIZE_TITLE);
 }
 
 static void
@@ -358,32 +367,70 @@ resp_searchform(const struct req *req)
 {
        int              i;
 
+       puts(CUSTOMIZE_BEGIN);
        puts("<!-- Begin search form. //-->");
        printf("<DIV ID=\"mancgi\">\n"
-              "<FORM ACTION=\"%s/search\" METHOD=\"get\">\n"
+              "<FORM ACTION=\"%s\" METHOD=\"get\">\n"
               "<FIELDSET>\n"
-              "<LEGEND>Search Parameters</LEGEND>\n"
-              "<INPUT TYPE=\"submit\" "
-              " VALUE=\"Search\"> 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("\">");
+              "<LEGEND>Manual Page Search Parameters</LEGEND>\n",
+              scriptname);
+
+       /* Write query input box. */
+
+       printf( "<TABLE><TR><TD>\n"
+               "<INPUT TYPE=\"text\" NAME=\"query\" VALUE=\"");
+       if (NULL != req->q.expr)
+               html_print(req->q.expr);
+       puts("\" SIZE=\"40\">");
+
+       /* Write submission and reset buttons. */
+
+       printf( "<INPUT TYPE=\"submit\" VALUE=\"Submit\">\n"
+               "<INPUT TYPE=\"reset\" VALUE=\"Reset\">\n");
+
+       /* Write show radio button */
+
+       printf( "</TD><TD>\n"
+               "<INPUT TYPE=\"radio\" ");
+       if (req->q.equal)
+               printf("CHECKED ");
+       printf( "NAME=\"apropos\" ID=\"show\" VALUE=\"0\">\n"
+               "<LABEL FOR=\"show\">Show named manual page</LABEL>\n");
+
+       /* Write section selector. */
+
+       printf( "</TD></TR><TR><TD>\n"
+               "<SELECT NAME=\"sec\">");
+       for (i = 0; i < sec_MAX; i++) {
+               printf("<OPTION VALUE=\"%s\"", sec_numbers[i]);
+               if (NULL != req->q.sec &&
+                   0 == strcmp(sec_numbers[i], req->q.sec))
+                       printf(" SELECTED");
+               printf(">%s</OPTION>\n", sec_names[i]);
+       }
+       puts("</SELECT>");
+
+       /* Write architecture selector. */
+
+       puts("<SELECT NAME=\"arch\">");
+       for (i = 0; i < arch_MAX; i++) {
+               printf("<OPTION VALUE=\"%s\"", arch_names[i]);
+               if (NULL != req->q.arch &&
+                   0 == strcmp(arch_names[i], req->q.arch))
+                       printf(" SELECTED");
+               printf(">%s</OPTION>\n", arch_names[i]);
+       }
+       puts("</SELECT>");
+
+       /* Write manpath selector. */
+
        if (req->psz > 1) {
-               puts("<SELECT NAME=\"manpath\">");
+               puts("<SELECT NAME=\"manpath\">");
                for (i = 0; i < (int)req->psz; i++) {
                        printf("<OPTION ");
-                       if (NULL == req->q.manroot ? 0 == i :
-                           0 == strcmp(req->q.manroot, req->p[i]))
-                               printf("SELECTED=\"selected\" ");
+                       if (NULL == req->q.manpath ? 0 == i :
+                           0 == strcmp(req->q.manpath, req->p[i]))
+                               printf("SELECTED ");
                        printf("VALUE=\"");
                        html_print(req->p[i]);
                        printf("\">");
@@ -392,8 +439,17 @@ resp_searchform(const struct req *req)
                }
                puts("</SELECT>");
        }
-       puts(".\n"
-            "<INPUT TYPE=\"reset\" VALUE=\"Reset\">\n"
+
+       /* Write search radio button */
+
+       printf( "</TD><TD>\n"
+               "<INPUT TYPE=\"radio\" ");
+       if (0 == req->q.equal)
+               printf("CHECKED ");
+       printf( "NAME=\"apropos\" ID=\"search\" VALUE=\"1\">\n"
+               "<LABEL FOR=\"search\">Search with apropos query</LABEL>\n");
+
+       puts("</TD></TR></TABLE>\n"
             "</FIELDSET>\n"
             "</FORM>\n"
             "</DIV>");
@@ -401,105 +457,89 @@ resp_searchform(const struct req *req)
 }
 
 static void
-resp_index(const struct req *req)
+pg_index(const struct req *req)
 {
 
        resp_begin_html(200, NULL);
        resp_searchform(req);
+       printf("<P>\n"
+              "This web interface is documented in the "
+              "<A HREF=\"%s/mandoc/man8/man.cgi.8\">man.cgi</A> "
+              "manual, and the "
+              "<A HREF=\"%s/mandoc/man1/apropos.1\">apropos</A> "
+              "manual explains the query syntax.\n"
+              "</P>\n",
+              scriptname, scriptname);
        resp_end_html();
 }
 
 static void
-resp_error400(void)
+pg_noresult(const struct req *req, const char *msg)
 {
-
-       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_begin_html(200, NULL);
+       resp_searchform(req);
+       puts("<P>");
+       puts(msg);
+       puts("</P>");
        resp_end_html();
 }
 
 static void
-resp_error404(const char *page)
+pg_error_badrequest(const char *msg)
 {
 
-       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_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_bad(void)
+pg_error_internal(void)
 {
        resp_begin_html(500, "Internal Server Error");
-       puts("<P>Generic badness happened.</P>");
+       puts("<P>Internal Server Error</P>");
        resp_end_html();
 }
 
 static void
-resp_baddb(void)
+pg_searchres(const struct req *req, struct manpage *r, size_t sz)
 {
-
-       resp_begin_html(500, "Internal Server Error");
-       puts("<P>Your database is broken.</P>");
-       resp_end_html();
-}
-
-static void
-resp_search(const struct req *req, struct manpage *r, size_t sz)
-{
-       size_t           i;
+       size_t           i, iuse, isec;
+       int              prio, priouse;
+       char             sec;
 
        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/%s/%s?",
-                   host, progname, req->q.manroot, r[0].file);
+               printf("Status: 303 See Other\r\n");
+               printf("Location: http://%s%s/%s/%s?",
+                   httphost, scriptname, req->q.manpath, r[0].file);
                http_printquery(req);
-               puts("\n"
-                    "Content-Type: text/html; charset=utf-8\n");
+               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\">");
-
-       if (0 == sz) {
-               puts("<P>\n"
-                    "No results found.\n"
-                    "</P>\n"
-                    "</DIV>");
-               resp_end_html();
-               return;
-       }
-
-       qsort(r, sz, sizeof(struct manpage), cmp);
-
        puts("<TABLE>");
 
        for (i = 0; i < sz; i++) {
                printf("<TR>\n"
                       "<TD CLASS=\"title\">\n"
-                      "<A HREF=\"%s/show/%s/%s?", 
-                   progname, req->q.manroot, r[i].file);
+                      "<A HREF=\"%s/%s/%s?", 
+                   scriptname, req->q.manpath, r[i].file);
                html_printquery(req);
                printf("\">");
                html_print(r[i].names);
@@ -513,15 +553,31 @@ resp_search(const struct req *req, struct manpage *r, size_t sz)
 
        puts("</TABLE>\n"
             "</DIV>");
-       resp_end_html();
-}
 
-/* ARGSUSED */
-static void
-pg_index(const struct req *req, char *path)
-{
+       /*
+        * In man(1) mode, show one of the pages
+        * even if more than one is found.
+        */
 
-       resp_index(req);
+       if (req->q.equal) {
+               puts("<HR>");
+               iuse = 0;
+               priouse = 10;
+               for (i = 0; i < sz; i++) {
+                       isec = strcspn(r[i].file, "123456789");
+                       sec = r[i].file[isec];
+                       if ('\0' == sec)
+                               continue;
+                       prio = sec_prios[sec - '1'];
+                       if (prio >= priouse)
+                               continue;
+                       priouse = prio;
+                       iuse = i;
+               }
+               resp_show(req, r[iuse].file);
+       }
+
+       resp_end_html();
 }
 
 static void
@@ -534,12 +590,10 @@ catman(const struct req *req, const char *file)
        int              italic, bold;
 
        if (NULL == (f = fopen(file, "r"))) {
-               resp_baddb();
+               puts("<P>You specified an invalid manual file.</P>");
                return;
        }
 
-       resp_begin_html(200, NULL);
-       resp_searchform(req);
        puts("<DIV CLASS=\"catman\">\n"
             "<PRE>");
 
@@ -653,9 +707,7 @@ catman(const struct req *req, const char *file)
        }
 
        puts("</PRE>\n"
-            "</DIV>\n"
-            "</BODY>\n"
-            "</HTML>");
+            "</DIV>");
 
        fclose(f);
 }
@@ -672,34 +724,35 @@ format(const struct req *req, const char *file)
        char             opts[PATH_MAX + 128];
 
        if (-1 == (fd = open(file, O_RDONLY, 0))) {
-               resp_baddb();
+               puts("<P>You specified an invalid manual file.</P>");
                return;
        }
 
        mp = mparse_alloc(MPARSE_SO, MANDOCLEVEL_FATAL, NULL,
-           req->q.manroot);
+           req->q.manpath);
        rc = mparse_readfd(mp, fd, file);
        close(fd);
 
        if (rc >= MANDOCLEVEL_FATAL) {
-               resp_baddb();
+               fprintf(stderr, "fatal mandoc error: %s/%s\n",
+                   req->q.manpath, file);
+               pg_error_internal();
                return;
        }
 
        snprintf(opts, sizeof(opts),
-           "fragment,man=%s/search?sec=%%S&expr=Nm~^%%N$",
-           progname);
+           "fragment,man=%s?query=%%N&amp;sec=%%S",
+           scriptname);
 
        mparse_result(mp, &mdoc, &man, NULL);
        if (NULL == man && NULL == mdoc) {
-               resp_baddb();
+               fprintf(stderr, "fatal mandoc error: %s/%s\n",
+                   req->q.manpath, file);
+               pg_error_internal();
                mparse_free(mp);
                return;
        }
 
-       resp_begin_html(200, NULL);
-       resp_searchform(req);
-
        vp = html_alloc(opts);
 
        if (NULL != mdoc)
@@ -707,44 +760,54 @@ format(const struct req *req, const char *file)
        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)
+resp_show(const struct req *req, const char *file)
+{
+       if ('.' == file[0] || '/' == file[1])
+               file += 2;
+
+       if ('c' == *file)
+               catman(req, file);
+       else
+               format(req, file);
+}
+
+static void
+pg_show(const struct req *req, const char *path)
 {
        char            *sub;
 
        if (NULL == path || NULL == (sub = strchr(path, '/'))) {
-               resp_error400();
+               pg_error_badrequest(
+                   "You did not specify a page to show.");
                return;
        } 
        *sub++ = '\0';
 
        /*
-        * Begin by chdir()ing into the manroot.
+        * 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)) {
-               perror(path);
-               resp_baddb();
+               pg_error_badrequest(
+                   "You specified an invalid manpath.");
                return;
        }
 
-       if ('c' == *sub)
-               catman(req, sub);
-       else
-               format(req, sub);
+       resp_begin_html(200, NULL);
+       resp_searchform(req);
+       resp_show(req, sub);
+       resp_end_html();
 }
 
 static void
-pg_search(const struct req *req, char *path)
+pg_search(const struct req *req)
 {
        struct mansearch          search;
        struct manpaths           paths;
@@ -760,16 +823,16 @@ pg_search(const struct req *req, char *path)
         * relative to the manpath root.
         */
 
-       if (-1 == (chdir(req->q.manroot))) {
-               perror(req->q.manroot);
-               resp_search(req, NULL, 0);
+       if (-1 == (chdir(req->q.manpath))) {
+               pg_error_badrequest(
+                   "You specified an invalid manpath.");
                return;
        }
 
        search.arch = req->q.arch;
        search.sec = req->q.sec;
-       search.deftype = TYPE_Nm | TYPE_Nd;
-       search.flags = 0;
+       search.deftype = req->q.equal ? TYPE_Nm : (TYPE_Nm | TYPE_Nd);
+       search.flags = req->q.equal ? MANSEARCH_MAN : 0;
 
        paths.sz = 1;
        paths.paths = mandoc_malloc(sizeof(char *));
@@ -798,10 +861,12 @@ pg_search(const struct req *req, char *path)
                        ep++;
        }
 
-       if (mansearch(&search, &paths, sz, cp, "Nd", &res, &ressz))
-               resp_search(req, res, ressz);
+       if (0 == mansearch(&search, &paths, sz, cp, "Nd", &res, &ressz))
+               pg_noresult(req, "You entered an invalid query.");
+       else if (0 == ressz)
+               pg_noresult(req, "No results found.");
        else
-               resp_baddb();
+               pg_searchres(req, res, ressz);
 
        for (i = 0; i < sz; i++)
                free(cp[i]);
@@ -821,33 +886,29 @@ pg_search(const struct req *req, char *path)
 int
 main(void)
 {
-       int              i;
        struct req       req;
-       char            *p, *path, *subpath;
+       const char      *path;
+       char            *querystring;
+       int              i;
 
        /* Scan our run-time environment. */
 
-       if (NULL == (cache = getenv("CACHE_DIR")))
-               cache = "/cache/man.cgi";
-
-       if (NULL == (progname = getenv("SCRIPT_NAME")))
-               progname = "";
+       if (NULL == (scriptname = getenv("SCRIPT_NAME")))
+               scriptname = "";
 
-       if (NULL == (css = getenv("CSS_DIR")))
-               css = "";
-
-       if (NULL == (host = getenv("HTTP_HOST")))
-               host = "localhost";
+       if (NULL == (httphost = getenv("HTTP_HOST")))
+               httphost = "localhost";
 
        /*
-        * First we change directory into the cache directory so that
+        * First we change directory into the MAN_DIR so that
         * subsequent scanning for manpath directories is rooted
         * relative to the same position.
         */
 
-       if (-1 == chdir(cache)) {
-               perror(cache);
-               resp_bad();
+       if (-1 == chdir(MAN_DIR)) {
+               fprintf(stderr, "MAN_DIR: %s: %s\n",
+                   MAN_DIR, strerror(errno));
+               pg_error_internal();
                return(EXIT_FAILURE);
        } 
 
@@ -856,55 +917,23 @@ main(void)
 
        /* Next parse out the query string. */
 
-       if (NULL != (p = getenv("QUERY_STRING")))
-               http_parse(&req, p);
-
-       /*
-        * 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 != (querystring = getenv("QUERY_STRING")))
+               http_parse(&req, querystring);
 
-       if (NULL != path && '/' == *path && '\0' == *++path)
-               req.page = PAGE_INDEX;
+       /* Dispatch to the three different pages. */
 
-       /* Resolve subpath component. */
+       path = getenv("PATH_INFO");
+       if (NULL == path)
+               path = "";
+       else if ('/' == *path)
+               path++;
 
-       if (NULL != path && NULL != (subpath = strchr(path, '/')))
-               *subpath++ = '\0';
-
-       /* Map path into one we recognise. */
-
-       if (NULL != path && '\0' != *path)
-               for (i = 0; i < (int)PAGE__MAX; i++) 
-                       if (0 == strcmp(pages[i], path)) {
-                               req.page = (enum page)i;
-                               break;
-                       }
-
-       /* Route pages. */
-
-       switch (req.page) {
-       case (PAGE_INDEX):
-               pg_index(&req, subpath);
-               break;
-       case (PAGE_SEARCH):
-               pg_search(&req, subpath);
-               break;
-       case (PAGE_SHOW):
-               pg_show(&req, subpath);
-               break;
-       default:
-               resp_error404(path);
-               break;
-       }
+       if ('\0' != *path)
+               pg_show(&req, path);
+       else if (NULL != req.q.expr)
+               pg_search(&req);
+       else
+               pg_index(&req);
 
        for (i = 0; i < (int)req.psz; i++)
                free(req.p[i]);