From bb6cc59dc6a067b916d811a50c55c0c219106be2 Mon Sep 17 00:00:00 2001
From: Stefan Fritsch <sf@apache.org>
Date: Fri, 30 Dec 2011 11:00:31 +0000
Subject: [PATCH] Display registered providers

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1225799 13f79535-47bb-0310-9956-ffa450edef68
---
 modules/generators/mod_info.c | 64 +++++++++++++++++++++++++++++++++--
 1 file changed, 61 insertions(+), 3 deletions(-)

diff --git a/modules/generators/mod_info.c b/modules/generators/mod_info.c
index 360290c7bb..75c37782bc 100644
--- a/modules/generators/mod_info.c
+++ b/modules/generators/mod_info.c
@@ -62,6 +62,7 @@
 #include "util_script.h"
 #include "ap_mpm.h"
 #include "mpm_common.h"
+#include "ap_provider.h"
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -688,6 +689,57 @@ static int show_active_hooks(request_rec * r)
     return 0;
 }
 
+static int cmp_provider_groups(const void *a_, const void *b_)
+{
+    const ap_list_provider_groups_t *a = a_, *b = b_;
+    int ret = strcmp(a->provider_group, b->provider_group);
+    if (!ret)
+        ret = strcmp(a->provider_version, b->provider_version);
+    return ret;
+}
+
+static int cmp_provider_names(const void *a_, const void *b_)
+{
+    const ap_list_provider_names_t *a = a_, *b = b_;
+    return strcmp(a->provider_name, b->provider_name);
+}
+
+static void show_providers(request_rec *r)
+{
+    apr_array_header_t *groups = ap_list_provider_groups(r->pool);
+    ap_list_provider_groups_t *group;
+    apr_array_header_t *names;
+    ap_list_provider_names_t *name;
+    int i,j;
+    const char *cur_group = NULL;
+
+    qsort(groups->elts, groups->nelts, sizeof(ap_list_provider_groups_t),
+          cmp_provider_groups);
+    ap_rputs("<h2><a name=\"providers\">Providers</a></h2>\n<dl>", r);
+
+    for (i = 0; i < groups->nelts; i++) {
+        group = &APR_ARRAY_IDX(groups, i, ap_list_provider_groups_t);
+        if (!cur_group || strcmp(cur_group, group->provider_group) != 0) {
+            if (cur_group)
+                ap_rputs("\n</dt>\n", r);
+            cur_group = group->provider_group;
+            ap_rprintf(r, "<dt><strong>%s</strong> (version <tt>%s</tt>):"
+                          "\n <br />\n", cur_group, group->provider_version);
+        }
+        names = ap_list_provider_names(r->pool, group->provider_group,
+                                       group->provider_version);
+        qsort(names->elts, names->nelts, sizeof(ap_list_provider_names_t),
+              cmp_provider_names);
+        for (j = 0; j < names->nelts; j++) {
+            name = &APR_ARRAY_IDX(names, j, ap_list_provider_names_t);
+            ap_rprintf(r, "<tt>&nbsp;&nbsp;%s</tt><br/>", name->provider_name);
+        }
+    }
+    if (cur_group)
+        ap_rputs("\n</dt>\n", r);
+    ap_rputs("</dl>\n<hr />\n", r);
+}
+
 static int cmp_module_name(const void *a_, const void *b_)
 {
     const module * const *a = a_;
@@ -737,8 +789,9 @@ static int display_info(request_rec * r)
             ap_rputs("<dl><dt><tt>Subpages:<br />", r);
             ap_rputs("<a href=\"?config\">Configuration Files</a>, "
                      "<a href=\"?server\">Server Settings</a>, "
-                     "<a href=\"?list\">Module List</a>,  "
-                     "<a href=\"?hooks\">Active Hooks</a>", r);
+                     "<a href=\"?list\">Module List</a>, "
+                     "<a href=\"?hooks\">Active Hooks</a>, "
+                     "<a href=\"?providers\">Available Providers</a>", r);
             ap_rputs("</tt></dt></dl><hr />", r);
 
             ap_rputs("<dl><dt><tt>Sections:<br />", r);
@@ -746,7 +799,8 @@ static int display_info(request_rec * r)
                      "<a href=\"#server\">Server Settings</a>, "
                      "<a href=\"#startup_hooks\">Startup Hooks</a>, "
                      "<a href=\"#request_hooks\">Request Hooks</a>, "
-                     "<a href=\"#other_hooks\">Other Hooks</a>", r);
+                     "<a href=\"#other_hooks\">Other Hooks</a>, "
+                     "<a href=\"#providers\">Providers</a>", r);
             ap_rputs("</tt></dt></dl><hr />", r);
 
             ap_rputs("<h2><a name=\"modules\">Loaded Modules</a></h2>"
@@ -772,6 +826,10 @@ static int display_info(request_rec * r)
             show_active_hooks(r);
         }
 
+        if (!r->args || !strcasecmp(r->args, "providers")) {
+            show_providers(r);
+        }
+
         if (r->args && 0 == strcasecmp(r->args, "config")) {
             ap_rputs("<dl><dt><strong>Configuration:</strong>\n", r);
             mod_info_module_cmds(r, NULL, ap_conftree, 0, 0);
-- 
2.40.0