Adding upstream version 2.4.38.upstream/2.4.38

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 467 insertions, 0 deletions

diff --git a/modules/ldap/util_ldap_cache.c b/modules/ldap/util_ldap_cache.c
new file mode 100644
index 0000000..774a76e
--- /dev/null
+++ b/modules/ldap/util_ldap_cache.c
@@ -0,0 +1,467 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * util_ldap_cache.c: LDAP cache things
+ *
+ * Original code from auth_ldap module for Apache v1.3:
+ * Copyright 1998, 1999 Enbridge Pipelines Inc.
+ * Copyright 1999-2001 Dave Carrigan
+ */
+
+#include "httpd.h"
+#include "util_ldap.h"
+#include "util_ldap_cache.h"
+#include <apr_strings.h>
+
+#if APR_HAS_LDAP
+
+/* ------------------------------------------------------------------ */
+
+unsigned long util_ldap_url_node_hash(void *n)
+{
+    util_url_node_t *node = n;
+    return util_ald_hash_string(1, node->url);
+}
+
+int util_ldap_url_node_compare(void *a, void *b)
+{
+    util_url_node_t *na = a;
+    util_url_node_t *nb = b;
+
+    return (strcmp(na->url, nb->url) == 0);
+}
+
+void *util_ldap_url_node_copy(util_ald_cache_t *cache, void *c)
+{
+    util_url_node_t *n = c;
+    util_url_node_t *node = util_ald_alloc(cache, sizeof *node);
+
+    if (node) {
+        if (!(node->url = util_ald_strdup(cache, n->url))) {
+            util_ald_free(cache, node);
+            return NULL;
+        }
+        node->search_cache = n->search_cache;
+        node->compare_cache = n->compare_cache;
+        node->dn_compare_cache = n->dn_compare_cache;
+        return node;
+    }
+    else {
+        return NULL;
+    }
+}
+
+void util_ldap_url_node_free(util_ald_cache_t *cache, void *n)
+{
+    util_url_node_t *node = n;
+
+    util_ald_free(cache, node->url);
+    util_ald_destroy_cache(node->search_cache);
+    util_ald_destroy_cache(node->compare_cache);
+    util_ald_destroy_cache(node->dn_compare_cache);
+    util_ald_free(cache, node);
+}
+
+void util_ldap_url_node_display(request_rec *r, util_ald_cache_t *cache, void *n)
+{
+    util_url_node_t *node = n;
+    char date_str[APR_CTIME_LEN];
+    const char *type_str;
+    util_ald_cache_t *cache_node;
+    int x;
+
+    for (x=0;x<3;x++) {
+        switch (x) {
+            case 0:
+                cache_node = node->search_cache;
+                type_str = "Searches";
+                break;
+            case 1:
+                cache_node = node->compare_cache;
+                type_str = "Compares";
+                break;
+            case 2:
+            default:
+                cache_node = node->dn_compare_cache;
+                type_str = "DN Compares";
+                break;
+        }
+
+        if (cache_node->marktime) {
+            apr_ctime(date_str, cache_node->marktime);
+        }
+        else
+            date_str[0] = 0;
+
+        ap_rprintf(r,
+                   "<tr valign='top'>"
+                   "<td nowrap>%s (%s)</td>"
+                   "<td nowrap>%ld</td>"
+                   "<td nowrap>%ld</td>"
+                   "<td nowrap>%ld</td>"
+                   "<td nowrap>%" APR_TIME_T_FMT "</td>"
+                   "<td nowrap>%ld</td>"
+                   "<td nowrap>%s</td>"
+                   "</tr>",
+                   node->url,
+                   type_str,
+                   cache_node->size,
+                   cache_node->maxentries,
+                   cache_node->numentries,
+                   apr_time_sec(cache_node->ttl),
+                   cache_node->fullmark,
+                   date_str);
+    }
+
+}
+
+/* ------------------------------------------------------------------ */
+
+/* Cache functions for search nodes */
+unsigned long util_ldap_search_node_hash(void *n)
+{
+    util_search_node_t *node = n;
+    return util_ald_hash_string(1, node->username);
+}
+
+int util_ldap_search_node_compare(void *a, void *b)
+{
+    util_search_node_t *na = a;
+    util_search_node_t *nb = b;
+
+    return (strcmp(na->username, nb->username) == 0);
+}
+
+void *util_ldap_search_node_copy(util_ald_cache_t *cache, void *c)
+{
+    util_search_node_t *node = c;
+    util_search_node_t *newnode = util_ald_alloc(cache, sizeof *newnode);
+
+    /* safety check */
+    if (newnode) {
+
+        /* copy vals */
+        if (node->vals) {
+            int k = node->numvals;
+            int i = 0;
+            if (!(newnode->vals = util_ald_alloc(cache, sizeof(char *) * (k+1)))) {
+                util_ldap_search_node_free(cache, newnode);
+                return NULL;
+            }
+            newnode->numvals = node->numvals;
+            for (;k;k--) {
+                if (node->vals[i]) {
+                    if (!(newnode->vals[i] = util_ald_strdup(cache, node->vals[i]))) {
+                        util_ldap_search_node_free(cache, newnode);
+                        return NULL;
+                    }
+                }
+                else
+                    newnode->vals[i] = NULL;
+                i++;
+            }
+        }
+        else {
+            newnode->vals = NULL;
+        }
+        if (!(newnode->username = util_ald_strdup(cache, node->username)) ||
+            !(newnode->dn = util_ald_strdup(cache, node->dn)) ) {
+            util_ldap_search_node_free(cache, newnode);
+            return NULL;
+        }
+        if (node->bindpw) {
+            if (!(newnode->bindpw = util_ald_strdup(cache, node->bindpw))) {
+                util_ldap_search_node_free(cache, newnode);
+                return NULL;
+            }
+        } else {
+            newnode->bindpw = NULL;
+        }
+        newnode->lastbind = node->lastbind;
+
+    }
+    return (void *)newnode;
+}
+
+void util_ldap_search_node_free(util_ald_cache_t *cache, void *n)
+{
+    int i = 0;
+    util_search_node_t *node = n;
+    int k = node->numvals;
+
+    if (node->vals) {
+        for (;k;k--,i++) {
+            if (node->vals[i]) {
+                util_ald_free(cache, node->vals[i]);
+            }
+        }
+        util_ald_free(cache, node->vals);
+    }
+    util_ald_free(cache, node->username);
+    util_ald_free(cache, node->dn);
+    util_ald_free(cache, node->bindpw);
+    util_ald_free(cache, node);
+}
+
+void util_ldap_search_node_display(request_rec *r, util_ald_cache_t *cache, void *n)
+{
+    util_search_node_t *node = n;
+    char date_str[APR_CTIME_LEN];
+
+    apr_ctime(date_str, node->lastbind);
+
+    ap_rprintf(r,
+               "<tr valign='top'>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "</tr>",
+               node->username,
+               node->dn,
+               date_str);
+}
+
+/* ------------------------------------------------------------------ */
+
+unsigned long util_ldap_compare_node_hash(void *n)
+{
+    util_compare_node_t *node = n;
+    return util_ald_hash_string(3, node->dn, node->attrib, node->value);
+}
+
+int util_ldap_compare_node_compare(void *a, void *b)
+{
+    util_compare_node_t *na = a;
+    util_compare_node_t *nb = b;
+
+    return (strcmp(na->dn, nb->dn) == 0 &&
+            strcmp(na->attrib, nb->attrib) == 0 &&
+            strcmp(na->value, nb->value) == 0);
+}
+
+void *util_ldap_compare_node_copy(util_ald_cache_t *cache, void *c)
+{
+    util_compare_node_t *n = c;
+    util_compare_node_t *node = util_ald_alloc(cache, sizeof *node);
+
+    if (node) {
+        if (!(node->dn = util_ald_strdup(cache, n->dn)) ||
+            !(node->attrib = util_ald_strdup(cache, n->attrib)) ||
+            !(node->value = util_ald_strdup(cache, n->value)) ||
+            ((n->subgroupList) && !(node->subgroupList = util_ald_sgl_dup(cache, n->subgroupList)))) {
+            util_ldap_compare_node_free(cache, node);
+            return NULL;
+        }
+        node->lastcompare = n->lastcompare;
+        node->result = n->result;
+        node->sgl_processed = n->sgl_processed;
+        return node;
+    }
+    else {
+        return NULL;
+    }
+}
+
+void util_ldap_compare_node_free(util_ald_cache_t *cache, void *n)
+{
+    util_compare_node_t *node = n;
+
+    util_ald_sgl_free(cache, &(node->subgroupList));
+    util_ald_free(cache, node->dn);
+    util_ald_free(cache, node->attrib);
+    util_ald_free(cache, node->value);
+    util_ald_free(cache, node);
+}
+
+void util_ldap_compare_node_display(request_rec *r, util_ald_cache_t *cache, void *n)
+{
+    util_compare_node_t *node = n;
+    char date_str[APR_CTIME_LEN];
+    char *cmp_result;
+    char *sub_groups_val;
+    char *sub_groups_checked;
+
+    apr_ctime(date_str, node->lastcompare);
+
+    if (node->result == LDAP_COMPARE_TRUE) {
+        cmp_result = "LDAP_COMPARE_TRUE";
+    }
+    else if (node->result == LDAP_COMPARE_FALSE) {
+        cmp_result = "LDAP_COMPARE_FALSE";
+    }
+    else {
+        cmp_result = apr_itoa(r->pool, node->result);
+    }
+
+    if (node->subgroupList) {
+        sub_groups_val = "Yes";
+    }
+    else {
+        sub_groups_val = "No";
+    }
+
+    if (node->sgl_processed) {
+        sub_groups_checked = "Yes";
+    }
+    else {
+        sub_groups_checked = "No";
+    }
+
+    ap_rprintf(r,
+               "<tr valign='top'>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "</tr>",
+               node->dn,
+               node->attrib,
+               node->value,
+               date_str,
+               cmp_result,
+               sub_groups_val,
+               sub_groups_checked);
+}
+
+/* ------------------------------------------------------------------ */
+
+unsigned long util_ldap_dn_compare_node_hash(void *n)
+{
+    util_dn_compare_node_t *node = n;
+    return util_ald_hash_string(1, node->reqdn);
+}
+
+int util_ldap_dn_compare_node_compare(void *a, void *b)
+{
+    util_dn_compare_node_t *na = a;
+    util_dn_compare_node_t *nb = b;
+
+    return (strcmp(na->reqdn, nb->reqdn) == 0);
+}
+
+void *util_ldap_dn_compare_node_copy(util_ald_cache_t *cache, void *c)
+{
+    util_dn_compare_node_t *n = c;
+    util_dn_compare_node_t *node = util_ald_alloc(cache, sizeof *node);
+
+    if (node) {
+        if (!(node->reqdn = util_ald_strdup(cache, n->reqdn)) ||
+            !(node->dn = util_ald_strdup(cache, n->dn))) {
+            util_ldap_dn_compare_node_free(cache, node);
+            return NULL;
+        }
+        return node;
+    }
+    else {
+        return NULL;
+    }
+}
+
+void util_ldap_dn_compare_node_free(util_ald_cache_t *cache, void *n)
+{
+    util_dn_compare_node_t *node = n;
+    util_ald_free(cache, node->reqdn);
+    util_ald_free(cache, node->dn);
+    util_ald_free(cache, node);
+}
+
+void util_ldap_dn_compare_node_display(request_rec *r, util_ald_cache_t *cache, void *n)
+{
+    util_dn_compare_node_t *node = n;
+
+    ap_rprintf(r,
+               "<tr valign='top'>"
+               "<td nowrap>%s</td>"
+               "<td nowrap>%s</td>"
+               "</tr>",
+               node->reqdn,
+               node->dn);
+}
+
+
+/* ------------------------------------------------------------------ */
+static apr_status_t util_ldap_cache_module_kill(void *data)
+{
+    util_ldap_state_t *st = data;
+
+    util_ald_destroy_cache(st->util_ldap_cache);
+#if APR_HAS_SHARED_MEMORY
+    if (st->cache_rmm != NULL) {
+        apr_rmm_destroy (st->cache_rmm);
+        st->cache_rmm = NULL;
+    }
+    if (st->cache_shm != NULL) {
+        apr_status_t result = apr_shm_destroy(st->cache_shm);
+        st->cache_shm = NULL;
+        return result;
+    }
+#endif
+    return APR_SUCCESS;
+}
+
+apr_status_t util_ldap_cache_init(apr_pool_t *pool, util_ldap_state_t *st)
+{
+#if APR_HAS_SHARED_MEMORY
+    apr_status_t result;
+    apr_size_t size;
+
+    if (st->cache_bytes > 0) {
+        if (st->cache_file) {
+            /* Remove any existing shm segment with this name. */
+            apr_shm_remove(st->cache_file, st->pool);
+        }
+
+        size = APR_ALIGN_DEFAULT(st->cache_bytes);
+
+        result = apr_shm_create(&st->cache_shm, size, st->cache_file, st->pool);
+        if (result != APR_SUCCESS) {
+            return result;
+        }
+
+        /* Determine the usable size of the shm segment. */
+        size = apr_shm_size_get(st->cache_shm);
+
+        /* This will create a rmm "handler" to get into the shared memory area */
+        result = apr_rmm_init(&st->cache_rmm, NULL,
+                              apr_shm_baseaddr_get(st->cache_shm), size,
+                              st->pool);
+        if (result != APR_SUCCESS) {
+            return result;
+        }
+    }
+
+#endif
+
+    apr_pool_cleanup_register(st->pool, st , util_ldap_cache_module_kill, apr_pool_cleanup_null);
+
+    st->util_ldap_cache =
+        util_ald_create_cache(st,
+                              st->search_cache_size,
+                              st->search_cache_ttl,
+                              util_ldap_url_node_hash,
+                              util_ldap_url_node_compare,
+                              util_ldap_url_node_copy,
+                              util_ldap_url_node_free,
+                              util_ldap_url_node_display);
+    return APR_SUCCESS;
+}
+
+
+#endif /* APR_HAS_LDAP */