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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 06:33:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 06:33:50 +0000
commitfe39ffb8b90ae4e002ed73fe98617cd590abb467 (patch)
treeb80e5956907d8aeaaffe4e4f0c068c0e6157ce8b /modules/aaa/mod_authnz_ldap.c
parentInitial commit. (diff)
downloadapache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.tar.xz
apache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.zip
Adding upstream version 2.4.56.upstream/2.4.56upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/aaa/mod_authnz_ldap.c')
-rw-r--r--modules/aaa/mod_authnz_ldap.c1977
1 files changed, 1977 insertions, 0 deletions
diff --git a/modules/aaa/mod_authnz_ldap.c b/modules/aaa/mod_authnz_ldap.c
new file mode 100644
index 0000000..a7b4939
--- /dev/null
+++ b/modules/aaa/mod_authnz_ldap.c
@@ -0,0 +1,1977 @@
+/* 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.
+ */
+
+#include "ap_provider.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "ap_provider.h"
+#include "http_core.h"
+#include "http_log.h"
+#include "http_protocol.h"
+#include "http_request.h"
+#include "util_ldap.h"
+
+#include "mod_auth.h"
+
+#include "apr_strings.h"
+#include "apr_xlate.h"
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+#include "apr_lib.h"
+
+#include <ctype.h>
+
+#if !APR_HAS_LDAP
+#error mod_authnz_ldap requires APR-util to have LDAP support built in. To fix add --with-ldap to ./configure.
+#endif
+
+static char *default_attributes[3] = { "member", "uniqueMember", NULL };
+
+typedef struct {
+ apr_pool_t *pool; /* Pool that this config is allocated from */
+#if APR_HAS_THREADS
+ apr_thread_mutex_t *lock; /* Lock for this config */
+#endif
+
+ /* These parameters are all derived from the AuthLDAPURL directive */
+ char *url; /* String representation of the URL */
+
+ char *host; /* Name of the LDAP server (or space separated list) */
+ int port; /* Port of the LDAP server */
+ char *basedn; /* Base DN to do all searches from */
+ char *attribute; /* Attribute to search for */
+ char **attributes; /* Array of all the attributes to return */
+ int scope; /* Scope of the search */
+ char *filter; /* Filter to further limit the search */
+ deref_options deref; /* how to handle alias dereferening */
+ char *binddn; /* DN to bind to server (can be NULL) */
+ char *bindpw; /* Password to bind to server (can be NULL) */
+ int bind_authoritative; /* If true, will return errors when bind fails */
+
+ int user_is_dn; /* If true, r->user is replaced by DN during authn */
+ char *remote_user_attribute; /* If set, r->user is replaced by this attribute during authn */
+ int compare_dn_on_server; /* If true, will use server to do DN compare */
+
+ int have_ldap_url; /* Set if we have found an LDAP url */
+
+ apr_array_header_t *groupattr; /* List of Group attributes identifying user members. Default:"member uniqueMember" */
+ int group_attrib_is_dn; /* If true, the group attribute is the DN, otherwise,
+ it's the exact string passed by the HTTP client */
+ char **sgAttributes; /* Array of strings constructed (post-config) from subgroupattrs. Last entry is NULL. */
+ apr_array_header_t *subgroupclasses; /* List of object classes of sub-groups. Default:"groupOfNames groupOfUniqueNames" */
+ int maxNestingDepth; /* Maximum recursive nesting depth permitted during subgroup processing. Default: 10 */
+
+ int secure; /* True if SSL connections are requested */
+ char *authz_prefix; /* Prefix for environment variables added during authz */
+ int initial_bind_as_user; /* true if we should try to bind (to lookup DN) directly with the basic auth username */
+ ap_regex_t *bind_regex; /* basic auth -> bind'able username regex */
+ const char *bind_subst; /* basic auth -> bind'able username substitution */
+ int search_as_user; /* true if authz searches should be done with the users credentials (when we did authn) */
+ int compare_as_user; /* true if authz compares should be done with the users credentials (when we did authn) */
+} authn_ldap_config_t;
+
+typedef struct {
+ char *dn; /* The saved dn from a successful search */
+ char *user; /* The username provided by the client */
+ const char **vals; /* The additional values pulled during the DN search*/
+ char *password; /* if this module successfully authenticates, the basic auth password, else null */
+} authn_ldap_request_t;
+
+enum auth_ldap_phase {
+ LDAP_AUTHN, LDAP_AUTHZ
+};
+
+enum auth_ldap_optype {
+ LDAP_SEARCH, LDAP_COMPARE, LDAP_COMPARE_AND_SEARCH /* nested groups */
+};
+
+/* maximum group elements supported */
+#define GROUPATTR_MAX_ELTS 10
+
+module AP_MODULE_DECLARE_DATA authnz_ldap_module;
+
+static APR_OPTIONAL_FN_TYPE(uldap_connection_close) *util_ldap_connection_close;
+static APR_OPTIONAL_FN_TYPE(uldap_connection_find) *util_ldap_connection_find;
+static APR_OPTIONAL_FN_TYPE(uldap_cache_comparedn) *util_ldap_cache_comparedn;
+static APR_OPTIONAL_FN_TYPE(uldap_cache_compare) *util_ldap_cache_compare;
+static APR_OPTIONAL_FN_TYPE(uldap_cache_check_subgroups) *util_ldap_cache_check_subgroups;
+static APR_OPTIONAL_FN_TYPE(uldap_cache_checkuserid) *util_ldap_cache_checkuserid;
+static APR_OPTIONAL_FN_TYPE(uldap_cache_getuserdn) *util_ldap_cache_getuserdn;
+static APR_OPTIONAL_FN_TYPE(uldap_ssl_supported) *util_ldap_ssl_supported;
+
+static apr_hash_t *charset_conversions = NULL;
+static char *to_charset = NULL; /* UTF-8 identifier derived from the charset.conv file */
+
+
+/* Derive a code page ID give a language name or ID */
+static char* derive_codepage_from_lang (apr_pool_t *p, char *language)
+{
+ char *charset;
+
+ if (!language) /* our default codepage */
+ return apr_pstrdup(p, "ISO-8859-1");
+
+ charset = (char*) apr_hash_get(charset_conversions, language, APR_HASH_KEY_STRING);
+
+ /*
+ * Test if language values like 'en-US' return a match from the charset
+ * conversion map when shortened to 'en'.
+ */
+ if (!charset && strlen(language) > 3 && language[2] == '-') {
+ char *language_short = apr_pstrndup(p, language, 2);
+ charset = (char*) apr_hash_get(charset_conversions, language_short, APR_HASH_KEY_STRING);
+ }
+
+ if (charset) {
+ charset = apr_pstrdup(p, charset);
+ }
+
+ return charset;
+}
+
+static apr_xlate_t* get_conv_set (request_rec *r)
+{
+ char *lang_line = (char*)apr_table_get(r->headers_in, "accept-language");
+ char *lang;
+ apr_xlate_t *convset;
+
+ if (lang_line) {
+ lang_line = apr_pstrdup(r->pool, lang_line);
+ for (lang = lang_line;*lang;lang++) {
+ if ((*lang == ',') || (*lang == ';')) {
+ *lang = '\0';
+ break;
+ }
+ }
+ lang = derive_codepage_from_lang(r->pool, lang_line);
+
+ if (lang && (apr_xlate_open(&convset, to_charset, lang, r->pool) == APR_SUCCESS)) {
+ return convset;
+ }
+ }
+
+ return NULL;
+}
+
+
+static const char* authn_ldap_xlate_password(request_rec *r,
+ const char* sent_password)
+{
+ apr_xlate_t *convset = NULL;
+ apr_size_t inbytes;
+ apr_size_t outbytes;
+ char *outbuf;
+
+ if (charset_conversions && (convset = get_conv_set(r)) ) {
+ inbytes = strlen(sent_password);
+ outbytes = (inbytes+1)*3;
+ outbuf = apr_pcalloc(r->pool, outbytes);
+
+ /* Convert the password to UTF-8. */
+ if (apr_xlate_conv_buffer(convset, sent_password, &inbytes, outbuf,
+ &outbytes) == APR_SUCCESS)
+ return outbuf;
+ }
+
+ return sent_password;
+}
+
+
+/*
+ * Build the search filter, or at least as much of the search filter that
+ * will fit in the buffer. We don't worry about the buffer not being able
+ * to hold the entire filter. If the buffer wasn't big enough to hold the
+ * filter, ldap_search_s will complain, but the only situation where this
+ * is likely to happen is if the client sent a really, really long
+ * username, most likely as part of an attack.
+ *
+ * The search filter consists of the filter provided with the URL,
+ * combined with a filter made up of the attribute provided with the URL,
+ * and the actual username passed by the HTTP client. For example, assume
+ * that the LDAP URL is
+ *
+ * ldap://ldap.airius.com/ou=People, o=Airius?uid??(posixid=*)
+ *
+ * Further, assume that the userid passed by the client was `userj'. The
+ * search filter will be (&(posixid=*)(uid=userj)).
+ */
+#define FILTER_LENGTH MAX_STRING_LEN
+static void authn_ldap_build_filter(char *filtbuf,
+ request_rec *r,
+ const char* sent_user,
+ const char* sent_filter,
+ authn_ldap_config_t *sec)
+{
+ char *p, *q, *filtbuf_end;
+ char *user, *filter;
+ apr_xlate_t *convset = NULL;
+ apr_size_t inbytes;
+ apr_size_t outbytes;
+ char *outbuf;
+ int nofilter = 0;
+
+ if (sent_user != NULL) {
+ user = apr_pstrdup (r->pool, sent_user);
+ }
+ else
+ return;
+
+ if (sent_filter != NULL) {
+ filter = apr_pstrdup (r->pool, sent_filter);
+ }
+ else
+ filter = sec->filter;
+
+ if (charset_conversions) {
+ convset = get_conv_set(r);
+ }
+
+ if (convset) {
+ inbytes = strlen(user);
+ outbytes = (inbytes+1)*3;
+ outbuf = apr_pcalloc(r->pool, outbytes);
+
+ /* Convert the user name to UTF-8. This is only valid for LDAP v3 */
+ if (apr_xlate_conv_buffer(convset, user, &inbytes, outbuf, &outbytes) == APR_SUCCESS) {
+ user = apr_pstrdup(r->pool, outbuf);
+ }
+ }
+
+ /*
+ * Create the first part of the filter, which consists of the
+ * config-supplied portions.
+ */
+
+ if ((nofilter = (filter && !strcasecmp(filter, "none")))) {
+ apr_snprintf(filtbuf, FILTER_LENGTH, "(%s=", sec->attribute);
+ }
+ else {
+ apr_snprintf(filtbuf, FILTER_LENGTH, "(&(%s)(%s=", filter, sec->attribute);
+ }
+
+ /*
+ * Now add the client-supplied username to the filter, ensuring that any
+ * LDAP filter metachars are escaped.
+ */
+ filtbuf_end = filtbuf + FILTER_LENGTH - 1;
+#if APR_HAS_MICROSOFT_LDAPSDK
+ for (p = user, q=filtbuf + strlen(filtbuf);
+ *p && q < filtbuf_end; ) {
+ if (strchr("*()\\", *p) != NULL) {
+ if ( q + 3 >= filtbuf_end)
+ break; /* Don't write part of escape sequence if we can't write all of it */
+ *q++ = '\\';
+ switch ( *p++ )
+ {
+ case '*':
+ *q++ = '2';
+ *q++ = 'a';
+ break;
+ case '(':
+ *q++ = '2';
+ *q++ = '8';
+ break;
+ case ')':
+ *q++ = '2';
+ *q++ = '9';
+ break;
+ case '\\':
+ *q++ = '5';
+ *q++ = 'c';
+ break;
+ }
+ }
+ else
+ *q++ = *p++;
+ }
+#else
+ for (p = user, q=filtbuf + strlen(filtbuf);
+ *p && q < filtbuf_end; *q++ = *p++) {
+ if (strchr("*()\\", *p) != NULL) {
+ *q++ = '\\';
+ if (q >= filtbuf_end) {
+ break;
+ }
+ }
+ }
+#endif
+ *q = '\0';
+
+ /*
+ * Append the closing parens of the filter, unless doing so would
+ * overrun the buffer.
+ */
+
+ if (nofilter) {
+ if (q + 1 <= filtbuf_end)
+ strcat(filtbuf, ")");
+ }
+ else {
+ if (q + 2 <= filtbuf_end)
+ strcat(filtbuf, "))");
+ }
+
+}
+
+static void *create_authnz_ldap_dir_config(apr_pool_t *p, char *d)
+{
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)apr_pcalloc(p, sizeof(authn_ldap_config_t));
+
+ sec->pool = p;
+#if APR_HAS_THREADS
+ apr_thread_mutex_create(&sec->lock, APR_THREAD_MUTEX_DEFAULT, p);
+#endif
+/*
+ sec->authz_enabled = 1;
+*/
+ sec->groupattr = apr_array_make(p, GROUPATTR_MAX_ELTS,
+ sizeof(struct mod_auth_ldap_groupattr_entry_t));
+ sec->subgroupclasses = apr_array_make(p, GROUPATTR_MAX_ELTS,
+ sizeof(struct mod_auth_ldap_groupattr_entry_t));
+
+ sec->have_ldap_url = 0;
+ sec->url = "";
+ sec->host = NULL;
+ sec->binddn = NULL;
+ sec->bindpw = NULL;
+ sec->bind_authoritative = 1;
+ sec->deref = always;
+ sec->group_attrib_is_dn = 1;
+ sec->secure = -1; /*Initialize to unset*/
+ sec->maxNestingDepth = 10;
+ sec->sgAttributes = apr_pcalloc(p, sizeof (char *) * GROUPATTR_MAX_ELTS + 1);
+
+ sec->user_is_dn = 0;
+ sec->remote_user_attribute = NULL;
+ sec->compare_dn_on_server = 0;
+
+ sec->authz_prefix = AUTHZ_PREFIX;
+
+ return sec;
+}
+
+static apr_status_t authnz_ldap_cleanup_connection_close(void *param)
+{
+ util_ldap_connection_t *ldc = param;
+ util_ldap_connection_close(ldc);
+ return APR_SUCCESS;
+}
+
+static int set_request_vars(request_rec *r, enum auth_ldap_phase phase) {
+ char *prefix = NULL;
+ int prefix_len;
+ int remote_user_attribute_set = 0;
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+ const char **vals = req->vals;
+
+ prefix = (phase == LDAP_AUTHN) ? AUTHN_PREFIX : sec->authz_prefix;
+ prefix_len = strlen(prefix);
+
+ if (sec->attributes && vals) {
+ apr_table_t *e = r->subprocess_env;
+ int i = 0;
+ while (sec->attributes[i]) {
+ char *str = apr_pstrcat(r->pool, prefix, sec->attributes[i], NULL);
+ int j = prefix_len;
+ while (str[j]) {
+ str[j] = apr_toupper(str[j]);
+ j++;
+ }
+ apr_table_setn(e, str, vals[i] ? vals[i] : "");
+
+ /* handle remote_user_attribute, if set */
+ if ((phase == LDAP_AUTHN) &&
+ sec->remote_user_attribute &&
+ !strcmp(sec->remote_user_attribute, sec->attributes[i])) {
+ r->user = (char *)apr_pstrdup(r->pool, vals[i]);
+ remote_user_attribute_set = 1;
+ }
+ i++;
+ }
+ }
+ return remote_user_attribute_set;
+}
+
+static const char *ldap_determine_binddn(request_rec *r, const char *user) {
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+ const char *result = user;
+ ap_regmatch_t regm[AP_MAX_REG_MATCH];
+
+ if (NULL == user || NULL == sec || !sec->bind_regex || !sec->bind_subst) {
+ return result;
+ }
+
+ if (!ap_regexec(sec->bind_regex, user, AP_MAX_REG_MATCH, regm, 0)) {
+ char *substituted = ap_pregsub(r->pool, sec->bind_subst, user, AP_MAX_REG_MATCH, regm);
+ if (NULL != substituted) {
+ result = substituted;
+ }
+ }
+
+ apr_table_set(r->subprocess_env, "LDAP_BINDASUSER", result);
+
+ return result;
+}
+
+
+/* Some LDAP servers restrict who can search or compare, and the hard-coded ID
+ * might be good for the DN lookup but not for later operations.
+ */
+static util_ldap_connection_t *get_connection_for_authz(request_rec *r, enum auth_ldap_optype type) {
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ char *binddn = sec->binddn;
+ char *bindpw = sec->bindpw;
+
+ /* If the per-request config isn't set, we didn't authenticate this user, and leave the default credentials */
+ if (req && req->password &&
+ ((type == LDAP_SEARCH && sec->search_as_user) ||
+ (type == LDAP_COMPARE && sec->compare_as_user) ||
+ (type == LDAP_COMPARE_AND_SEARCH && sec->compare_as_user && sec->search_as_user))){
+ binddn = req->dn;
+ bindpw = req->password;
+ }
+
+ return util_ldap_connection_find(r, sec->host, sec->port,
+ binddn, bindpw,
+ sec->deref, sec->secure);
+}
+/*
+ * Authentication Phase
+ * --------------------
+ *
+ * This phase authenticates the credentials the user has sent with
+ * the request (ie the username and password are checked). This is done
+ * by making an attempt to bind to the LDAP server using this user's
+ * DN and the supplied password.
+ *
+ */
+static authn_status authn_ldap_check_password(request_rec *r, const char *user,
+ const char *password)
+{
+ char filtbuf[FILTER_LENGTH];
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+ int result = 0;
+ int remote_user_attribute_set = 0;
+ const char *dn = NULL;
+ const char *utfpassword;
+
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)apr_pcalloc(r->pool, sizeof(authn_ldap_request_t));
+ ap_set_module_config(r->request_config, &authnz_ldap_module, req);
+
+/*
+ if (!sec->enabled) {
+ return AUTH_USER_NOT_FOUND;
+ }
+*/
+
+ /*
+ * Basic sanity checks before any LDAP operations even happen.
+ */
+ if (!sec->have_ldap_url) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(02558)
+ "no AuthLDAPURL");
+
+ return AUTH_GENERAL_ERROR;
+ }
+
+ /* Get the password that the client sent */
+ if (password == NULL) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01692)
+ "auth_ldap authenticate: no password specified");
+ return AUTH_GENERAL_ERROR;
+ }
+
+ if (user == NULL) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01693)
+ "auth_ldap authenticate: no user specified");
+ return AUTH_GENERAL_ERROR;
+ }
+
+ /*
+ * A bind to the server with an empty password always succeeds, so
+ * we check to ensure that the password is not empty. This implies
+ * that users who actually do have empty passwords will never be
+ * able to authenticate with this module. I don't see this as a big
+ * problem.
+ */
+ if (!(*password)) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(10263)
+ "auth_ldap authenticate: empty password specified");
+ return AUTH_DENIED;
+ }
+
+ /* There is a good AuthLDAPURL, right? */
+ if (sec->host) {
+ const char *binddn = sec->binddn;
+ const char *bindpw = sec->bindpw;
+ if (sec->initial_bind_as_user) {
+ bindpw = password;
+ binddn = ldap_determine_binddn(r, user);
+ }
+
+ ldc = util_ldap_connection_find(r, sec->host, sec->port,
+ binddn, bindpw,
+ sec->deref, sec->secure);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01690)
+ "auth_ldap authenticate: no sec->host - weird...?");
+ return AUTH_GENERAL_ERROR;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01691)
+ "auth_ldap authenticate: using URL %s", sec->url);
+
+ /* build the username filter */
+ authn_ldap_build_filter(filtbuf, r, user, NULL, sec);
+
+ ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r,
+ "auth_ldap authenticate: final authn filter is %s", filtbuf);
+
+ /* convert password to utf-8 */
+ utfpassword = authn_ldap_xlate_password(r, password);
+
+ /* do the user search */
+ result = util_ldap_cache_checkuserid(r, ldc, sec->url, sec->basedn, sec->scope,
+ sec->attributes, filtbuf, utfpassword,
+ &dn, &(req->vals));
+ util_ldap_connection_close(ldc);
+
+ /* handle bind failure */
+ if (result != LDAP_SUCCESS) {
+ if (!sec->bind_authoritative) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01694)
+ "auth_ldap authenticate: user %s authentication failed; "
+ "URI %s [%s][%s] (not authoritative)",
+ user, r->uri, ldc->reason, ldap_err2string(result));
+ return AUTH_USER_NOT_FOUND;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01695)
+ "auth_ldap authenticate: "
+ "user %s authentication failed; URI %s [%s][%s]",
+ user, r->uri, ldc->reason, ldap_err2string(result));
+
+ /* talking to a primitive LDAP server (like RACF-over-LDAP) that doesn't return specific errors */
+ if (!strcasecmp(sec->filter, "none") && LDAP_OTHER == result) {
+ return AUTH_USER_NOT_FOUND;
+ }
+
+ return (LDAP_NO_SUCH_OBJECT == result) ? AUTH_USER_NOT_FOUND
+#ifdef LDAP_SECURITY_ERROR
+ : (LDAP_SECURITY_ERROR(result)) ? AUTH_DENIED
+#else
+ : (LDAP_INAPPROPRIATE_AUTH == result) ? AUTH_DENIED
+ : (LDAP_INVALID_CREDENTIALS == result) ? AUTH_DENIED
+#ifdef LDAP_INSUFFICIENT_ACCESS
+ : (LDAP_INSUFFICIENT_ACCESS == result) ? AUTH_DENIED
+#endif
+#ifdef LDAP_INSUFFICIENT_RIGHTS
+ : (LDAP_INSUFFICIENT_RIGHTS == result) ? AUTH_DENIED
+#endif
+#endif
+#ifdef LDAP_CONSTRAINT_VIOLATION
+ /* At least Sun Directory Server sends this if a user is
+ * locked. This is not covered by LDAP_SECURITY_ERROR.
+ */
+ : (LDAP_CONSTRAINT_VIOLATION == result) ? AUTH_DENIED
+#endif
+ : AUTH_GENERAL_ERROR;
+ }
+
+ /* mark the user and DN */
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = apr_pstrdup(r->pool, user);
+ req->password = apr_pstrdup(r->pool, password);
+ if (sec->user_is_dn) {
+ r->user = req->dn;
+ }
+
+ /* add environment variables */
+ remote_user_attribute_set = set_request_vars(r, LDAP_AUTHN);
+
+ /* sanity check */
+ if (sec->remote_user_attribute && !remote_user_attribute_set) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01696)
+ "auth_ldap authenticate: "
+ "REMOTE_USER was to be set with attribute '%s', "
+ "but this attribute was not requested for in the "
+ "LDAP query for the user. REMOTE_USER will fall "
+ "back to username or DN as appropriate.",
+ sec->remote_user_attribute);
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01697)
+ "auth_ldap authenticate: accepting %s", user);
+
+ return AUTH_GRANTED;
+}
+
+static authz_status ldapuser_check_authorization(request_rec *r,
+ const char *require_args,
+ const void *parsed_require_args)
+{
+ int result = 0;
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+
+ const char *err = NULL;
+ const ap_expr_info_t *expr = parsed_require_args;
+ const char *require;
+
+ const char *t;
+ char *w;
+
+ char filtbuf[FILTER_LENGTH];
+ const char *dn = NULL;
+
+ if (!r->user) {
+ return AUTHZ_DENIED_NO_USER;
+ }
+
+ if (!sec->have_ldap_url) {
+ return AUTHZ_DENIED;
+ }
+
+ if (sec->host) {
+ ldc = get_connection_for_authz(r, LDAP_COMPARE);
+ apr_pool_cleanup_register(r->pool, ldc,
+ authnz_ldap_cleanup_connection_close,
+ apr_pool_cleanup_null);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01698)
+ "auth_ldap authorize: no sec->host - weird...?");
+ return AUTHZ_DENIED;
+ }
+
+ /*
+ * If we have been authenticated by some other module than mod_authnz_ldap,
+ * the req structure needed for authorization needs to be created
+ * and populated with the userid and DN of the account in LDAP
+ */
+
+
+ if (!strlen(r->user)) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01699)
+ "ldap authorize: Userid is blank, AuthType=%s",
+ r->ap_auth_type);
+ }
+
+ if(!req) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01700)
+ "ldap authorize: Creating LDAP req structure");
+
+ req = (authn_ldap_request_t *)apr_pcalloc(r->pool,
+ sizeof(authn_ldap_request_t));
+
+ /* Build the username filter */
+ authn_ldap_build_filter(filtbuf, r, r->user, NULL, sec);
+
+ /* Search for the user DN */
+ result = util_ldap_cache_getuserdn(r, ldc, sec->url, sec->basedn,
+ sec->scope, sec->attributes, filtbuf, &dn, &(req->vals));
+
+ /* Search failed, log error and return failure */
+ if(result != LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01701)
+ "auth_ldap authorise: User DN not found, %s", ldc->reason);
+ return AUTHZ_DENIED;
+ }
+
+ ap_set_module_config(r->request_config, &authnz_ldap_module, req);
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = r->user;
+
+ }
+
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01702)
+ "auth_ldap authorize: require user: user's DN has not "
+ "been defined; failing authorization");
+ return AUTHZ_DENIED;
+ }
+
+ require = ap_expr_str_exec(r, expr, &err);
+ if (err) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02585)
+ "auth_ldap authorize: require user: Can't evaluate expression: %s",
+ err);
+ return AUTHZ_DENIED;
+ }
+
+ /*
+ * First do a whole-line compare, in case it's something like
+ * require user Babs Jensen
+ */
+ result = util_ldap_cache_compare(r, ldc, sec->url, req->dn, sec->attribute, require);
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01703)
+ "auth_ldap authorize: require user: authorization "
+ "successful");
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01704)
+ "auth_ldap authorize: require user: "
+ "authorization failed [%s][%s]",
+ ldc->reason, ldap_err2string(result));
+ }
+ }
+
+ /*
+ * Now break apart the line and compare each word on it
+ */
+ t = require;
+ while ((w = ap_getword_conf(r->pool, &t)) && w[0]) {
+ result = util_ldap_cache_compare(r, ldc, sec->url, req->dn, sec->attribute, w);
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01705)
+ "auth_ldap authorize: "
+ "require user: authorization successful");
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01706)
+ "auth_ldap authorize: "
+ "require user: authorization failed [%s][%s]",
+ ldc->reason, ldap_err2string(result));
+ }
+ }
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01707)
+ "auth_ldap authorize user: authorization denied for "
+ "user %s to %s",
+ r->user, r->uri);
+
+ return AUTHZ_DENIED;
+}
+
+static authz_status ldapgroup_check_authorization(request_rec *r,
+ const char *require_args,
+ const void *parsed_require_args)
+{
+ int result = 0;
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+
+ const char *err = NULL;
+ const ap_expr_info_t *expr = parsed_require_args;
+ const char *require;
+
+ const char *t;
+
+ char filtbuf[FILTER_LENGTH];
+ const char *dn = NULL;
+ struct mod_auth_ldap_groupattr_entry_t *ent;
+ int i;
+
+ if (!r->user) {
+ return AUTHZ_DENIED_NO_USER;
+ }
+
+ if (!sec->have_ldap_url) {
+ return AUTHZ_DENIED;
+ }
+
+ if (sec->host) {
+ ldc = get_connection_for_authz(r, LDAP_COMPARE); /* for the top-level group only */
+ apr_pool_cleanup_register(r->pool, ldc,
+ authnz_ldap_cleanup_connection_close,
+ apr_pool_cleanup_null);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01708)
+ "auth_ldap authorize: no sec->host - weird...?");
+ return AUTHZ_DENIED;
+ }
+
+ /*
+ * If there are no elements in the group attribute array, the default should be
+ * member and uniquemember; populate the array now.
+ */
+ if (sec->groupattr->nelts == 0) {
+ struct mod_auth_ldap_groupattr_entry_t *grp;
+#if APR_HAS_THREADS
+ apr_thread_mutex_lock(sec->lock);
+#endif
+ grp = apr_array_push(sec->groupattr);
+ grp->name = "member";
+ grp = apr_array_push(sec->groupattr);
+ grp->name = "uniqueMember";
+#if APR_HAS_THREADS
+ apr_thread_mutex_unlock(sec->lock);
+#endif
+ }
+
+ /*
+ * If there are no elements in the sub group classes array, the default
+ * should be groupOfNames and groupOfUniqueNames; populate the array now.
+ */
+ if (sec->subgroupclasses->nelts == 0) {
+ struct mod_auth_ldap_groupattr_entry_t *grp;
+#if APR_HAS_THREADS
+ apr_thread_mutex_lock(sec->lock);
+#endif
+ grp = apr_array_push(sec->subgroupclasses);
+ grp->name = "groupOfNames";
+ grp = apr_array_push(sec->subgroupclasses);
+ grp->name = "groupOfUniqueNames";
+#if APR_HAS_THREADS
+ apr_thread_mutex_unlock(sec->lock);
+#endif
+ }
+
+ /*
+ * If we have been authenticated by some other module than mod_auth_ldap,
+ * the req structure needed for authorization needs to be created
+ * and populated with the userid and DN of the account in LDAP
+ */
+
+ if (!strlen(r->user)) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01709)
+ "ldap authorize: Userid is blank, AuthType=%s",
+ r->ap_auth_type);
+ }
+
+ if(!req) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01710)
+ "ldap authorize: Creating LDAP req structure");
+
+ req = (authn_ldap_request_t *)apr_pcalloc(r->pool,
+ sizeof(authn_ldap_request_t));
+ /* Build the username filter */
+ authn_ldap_build_filter(filtbuf, r, r->user, NULL, sec);
+
+ /* Search for the user DN */
+ result = util_ldap_cache_getuserdn(r, ldc, sec->url, sec->basedn,
+ sec->scope, sec->attributes, filtbuf, &dn, &(req->vals));
+
+ /* Search failed, log error and return failure */
+ if(result != LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01711)
+ "auth_ldap authorise: User DN not found, %s", ldc->reason);
+ return AUTHZ_DENIED;
+ }
+
+ ap_set_module_config(r->request_config, &authnz_ldap_module, req);
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = r->user;
+ }
+
+ ent = (struct mod_auth_ldap_groupattr_entry_t *) sec->groupattr->elts;
+
+ if (sec->group_attrib_is_dn) {
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01712)
+ "auth_ldap authorize: require group: user's DN has "
+ "not been defined; failing authorization for user %s",
+ r->user);
+ return AUTHZ_DENIED;
+ }
+ }
+ else {
+ if (req->user == NULL || strlen(req->user) == 0) {
+ /* We weren't called in the authentication phase, so we didn't have a
+ * chance to set the user field. Do so now. */
+ req->user = r->user;
+ }
+ }
+
+ require = ap_expr_str_exec(r, expr, &err);
+ if (err) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02586)
+ "auth_ldap authorize: require group: Can't evaluate expression: %s",
+ err);
+ return AUTHZ_DENIED;
+ }
+
+ t = require;
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01713)
+ "auth_ldap authorize: require group: testing for group "
+ "membership in \"%s\"",
+ t);
+
+ /* PR52464 exhaust attrs in base group before checking subgroups */
+ for (i = 0; i < sec->groupattr->nelts; i++) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01714)
+ "auth_ldap authorize: require group: testing for %s: "
+ "%s (%s)",
+ ent[i].name,
+ sec->group_attrib_is_dn ? req->dn : req->user, t);
+
+ result = util_ldap_cache_compare(r, ldc, sec->url, t, ent[i].name,
+ sec->group_attrib_is_dn ? req->dn : req->user);
+ if (result == LDAP_COMPARE_TRUE) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01715)
+ "auth_ldap authorize: require group: "
+ "authorization successful (attribute %s) "
+ "[%s][%d - %s]",
+ ent[i].name, ldc->reason, result,
+ ldap_err2string(result));
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01719)
+ "auth_ldap authorize: require group \"%s\": "
+ "didn't match with attr %s [%s][%d - %s]",
+ t, ent[i].name, ldc->reason, result,
+ ldap_err2string(result));
+ }
+ }
+
+ for (i = 0; i < sec->groupattr->nelts; i++) {
+ /* nested groups need searches and compares, so grab a new handle */
+ authnz_ldap_cleanup_connection_close(ldc);
+ apr_pool_cleanup_kill(r->pool, ldc,authnz_ldap_cleanup_connection_close);
+
+ ldc = get_connection_for_authz(r, LDAP_COMPARE_AND_SEARCH);
+ apr_pool_cleanup_register(r->pool, ldc,
+ authnz_ldap_cleanup_connection_close,
+ apr_pool_cleanup_null);
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01716)
+ "auth_ldap authorise: require group \"%s\": "
+ "failed [%s][%d - %s], checking sub-groups",
+ t, ldc->reason, result, ldap_err2string(result));
+
+ result = util_ldap_cache_check_subgroups(r, ldc, sec->url, t, ent[i].name,
+ sec->group_attrib_is_dn ? req->dn : req->user,
+ sec->sgAttributes[0] ? sec->sgAttributes : default_attributes,
+ sec->subgroupclasses,
+ 0, sec->maxNestingDepth);
+ if (result == LDAP_COMPARE_TRUE) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01717)
+ "auth_ldap authorise: require group "
+ "(sub-group): authorisation successful "
+ "(attribute %s) [%s][%d - %s]",
+ ent[i].name, ldc->reason, result,
+ ldap_err2string(result));
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01718)
+ "auth_ldap authorise: require group "
+ "(sub-group) \"%s\": didn't match with attr %s "
+ "[%s][%d - %s]",
+ t, ldc->reason, ent[i].name, result,
+ ldap_err2string(result));
+ }
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01720)
+ "auth_ldap authorize group: authorization denied for "
+ "user %s to %s",
+ r->user, r->uri);
+
+ return AUTHZ_DENIED;
+}
+
+static authz_status ldapdn_check_authorization(request_rec *r,
+ const char *require_args,
+ const void *parsed_require_args)
+{
+ int result = 0;
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+
+ const char *err = NULL;
+ const ap_expr_info_t *expr = parsed_require_args;
+ const char *require;
+
+ const char *t;
+
+ char filtbuf[FILTER_LENGTH];
+ const char *dn = NULL;
+
+ if (!r->user) {
+ return AUTHZ_DENIED_NO_USER;
+ }
+
+ if (!sec->have_ldap_url) {
+ return AUTHZ_DENIED;
+ }
+
+ if (sec->host) {
+ ldc = get_connection_for_authz(r, LDAP_SEARCH); /* _comparedn is a searche */
+ apr_pool_cleanup_register(r->pool, ldc,
+ authnz_ldap_cleanup_connection_close,
+ apr_pool_cleanup_null);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01721)
+ "auth_ldap authorize: no sec->host - weird...?");
+ return AUTHZ_DENIED;
+ }
+
+ /*
+ * If we have been authenticated by some other module than mod_auth_ldap,
+ * the req structure needed for authorization needs to be created
+ * and populated with the userid and DN of the account in LDAP
+ */
+
+ if (!strlen(r->user)) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01722)
+ "ldap authorize: Userid is blank, AuthType=%s",
+ r->ap_auth_type);
+ }
+
+ if(!req) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01723)
+ "ldap authorize: Creating LDAP req structure");
+
+ req = (authn_ldap_request_t *)apr_pcalloc(r->pool,
+ sizeof(authn_ldap_request_t));
+ /* Build the username filter */
+ authn_ldap_build_filter(filtbuf, r, r->user, NULL, sec);
+
+ /* Search for the user DN */
+ result = util_ldap_cache_getuserdn(r, ldc, sec->url, sec->basedn,
+ sec->scope, sec->attributes, filtbuf, &dn, &(req->vals));
+
+ /* Search failed, log error and return failure */
+ if(result != LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01724)
+ "auth_ldap authorise: User DN not found with filter %s: %s", filtbuf, ldc->reason);
+ return AUTHZ_DENIED;
+ }
+
+ ap_set_module_config(r->request_config, &authnz_ldap_module, req);
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = r->user;
+ }
+
+ require = ap_expr_str_exec(r, expr, &err);
+ if (err) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02587)
+ "auth_ldap authorize: require dn: Can't evaluate expression: %s",
+ err);
+ return AUTHZ_DENIED;
+ }
+
+ t = require;
+
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01725)
+ "auth_ldap authorize: require dn: user's DN has not "
+ "been defined; failing authorization");
+ return AUTHZ_DENIED;
+ }
+
+ result = util_ldap_cache_comparedn(r, ldc, sec->url, req->dn, t, sec->compare_dn_on_server);
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01726)
+ "auth_ldap authorize: "
+ "require dn: authorization successful");
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01727)
+ "auth_ldap authorize: "
+ "require dn \"%s\": LDAP error [%s][%s]",
+ t, ldc->reason, ldap_err2string(result));
+ }
+ }
+
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01728)
+ "auth_ldap authorize dn: authorization denied for "
+ "user %s to %s",
+ r->user, r->uri);
+
+ return AUTHZ_DENIED;
+}
+
+static authz_status ldapattribute_check_authorization(request_rec *r,
+ const char *require_args,
+ const void *parsed_require_args)
+{
+ int result = 0;
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+
+ const char *err = NULL;
+ const ap_expr_info_t *expr = parsed_require_args;
+ const char *require;
+
+ const char *t;
+ char *w, *value;
+
+ char filtbuf[FILTER_LENGTH];
+ const char *dn = NULL;
+
+ if (!r->user) {
+ return AUTHZ_DENIED_NO_USER;
+ }
+
+ if (!sec->have_ldap_url) {
+ return AUTHZ_DENIED;
+ }
+
+ if (sec->host) {
+ ldc = get_connection_for_authz(r, LDAP_COMPARE);
+ apr_pool_cleanup_register(r->pool, ldc,
+ authnz_ldap_cleanup_connection_close,
+ apr_pool_cleanup_null);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01729)
+ "auth_ldap authorize: no sec->host - weird...?");
+ return AUTHZ_DENIED;
+ }
+
+ /*
+ * If we have been authenticated by some other module than mod_auth_ldap,
+ * the req structure needed for authorization needs to be created
+ * and populated with the userid and DN of the account in LDAP
+ */
+
+ if (!strlen(r->user)) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01730)
+ "ldap authorize: Userid is blank, AuthType=%s",
+ r->ap_auth_type);
+ }
+
+ if(!req) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01731)
+ "ldap authorize: Creating LDAP req structure");
+
+ req = (authn_ldap_request_t *)apr_pcalloc(r->pool,
+ sizeof(authn_ldap_request_t));
+ /* Build the username filter */
+ authn_ldap_build_filter(filtbuf, r, r->user, NULL, sec);
+
+ /* Search for the user DN */
+ result = util_ldap_cache_getuserdn(r, ldc, sec->url, sec->basedn,
+ sec->scope, sec->attributes, filtbuf, &dn, &(req->vals));
+
+ /* Search failed, log error and return failure */
+ if(result != LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01732)
+ "auth_ldap authorise: User DN not found with filter %s: %s", filtbuf, ldc->reason);
+ return AUTHZ_DENIED;
+ }
+
+ ap_set_module_config(r->request_config, &authnz_ldap_module, req);
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = r->user;
+ }
+
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01733)
+ "auth_ldap authorize: require ldap-attribute: user's DN "
+ "has not been defined; failing authorization");
+ return AUTHZ_DENIED;
+ }
+
+ require = ap_expr_str_exec(r, expr, &err);
+ if (err) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02588)
+ "auth_ldap authorize: require ldap-attribute: Can't "
+ "evaluate expression: %s", err);
+ return AUTHZ_DENIED;
+ }
+
+ t = require;
+
+ while (t[0]) {
+ w = ap_getword(r->pool, &t, '=');
+ value = ap_getword_conf(r->pool, &t);
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01734)
+ "auth_ldap authorize: checking attribute %s has value %s",
+ w, value);
+ result = util_ldap_cache_compare(r, ldc, sec->url, req->dn, w, value);
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01735)
+ "auth_ldap authorize: "
+ "require attribute: authorization successful");
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01736)
+ "auth_ldap authorize: require attribute: "
+ "authorization failed [%s][%s]",
+ ldc->reason, ldap_err2string(result));
+ }
+ }
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01737)
+ "auth_ldap authorize attribute: authorization denied for "
+ "user %s to %s",
+ r->user, r->uri);
+
+ return AUTHZ_DENIED;
+}
+
+static authz_status ldapfilter_check_authorization(request_rec *r,
+ const char *require_args,
+ const void *parsed_require_args)
+{
+ int result = 0;
+ authn_ldap_request_t *req =
+ (authn_ldap_request_t *)ap_get_module_config(r->request_config, &authnz_ldap_module);
+ authn_ldap_config_t *sec =
+ (authn_ldap_config_t *)ap_get_module_config(r->per_dir_config, &authnz_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+
+ const char *err = NULL;
+ const ap_expr_info_t *expr = parsed_require_args;
+ const char *require;
+
+ const char *t;
+
+ char filtbuf[FILTER_LENGTH];
+ const char *dn = NULL;
+
+ if (!r->user) {
+ return AUTHZ_DENIED_NO_USER;
+ }
+
+ if (!sec->have_ldap_url) {
+ return AUTHZ_DENIED;
+ }
+
+ if (sec->host) {
+ ldc = get_connection_for_authz(r, LDAP_SEARCH);
+ apr_pool_cleanup_register(r->pool, ldc,
+ authnz_ldap_cleanup_connection_close,
+ apr_pool_cleanup_null);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01738)
+ "auth_ldap authorize: no sec->host - weird...?");
+ return AUTHZ_DENIED;
+ }
+
+ /*
+ * If we have been authenticated by some other module than mod_auth_ldap,
+ * the req structure needed for authorization needs to be created
+ * and populated with the userid and DN of the account in LDAP
+ */
+
+ if (!strlen(r->user)) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01739)
+ "ldap authorize: Userid is blank, AuthType=%s",
+ r->ap_auth_type);
+ }
+
+ if(!req) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01740)
+ "ldap authorize: Creating LDAP req structure");
+
+ req = (authn_ldap_request_t *)apr_pcalloc(r->pool,
+ sizeof(authn_ldap_request_t));
+ /* Build the username filter */
+ authn_ldap_build_filter(filtbuf, r, r->user, NULL, sec);
+
+ /* Search for the user DN */
+ result = util_ldap_cache_getuserdn(r, ldc, sec->url, sec->basedn,
+ sec->scope, sec->attributes, filtbuf, &dn, &(req->vals));
+
+ /* Search failed, log error and return failure */
+ if(result != LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01741)
+ "auth_ldap authorise: User DN not found with filter %s: %s", filtbuf, ldc->reason);
+ return AUTHZ_DENIED;
+ }
+
+ ap_set_module_config(r->request_config, &authnz_ldap_module, req);
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = r->user;
+ }
+
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01742)
+ "auth_ldap authorize: require ldap-filter: user's DN "
+ "has not been defined; failing authorization");
+ return AUTHZ_DENIED;
+ }
+
+ require = ap_expr_str_exec(r, expr, &err);
+ if (err) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02589)
+ "auth_ldap authorize: require ldap-filter: Can't "
+ "evaluate require expression: %s", err);
+ return AUTHZ_DENIED;
+ }
+
+ t = require;
+
+ if (t[0]) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01743)
+ "auth_ldap authorize: checking filter %s", t);
+
+ /* Build the username filter */
+ authn_ldap_build_filter(filtbuf, r, req->user, t, sec);
+
+ /* Search for the user DN */
+ result = util_ldap_cache_getuserdn(r, ldc, sec->url, sec->basedn,
+ sec->scope, sec->attributes, filtbuf, &dn, &(req->vals));
+
+ /* Make sure that the filtered search returned the correct user dn */
+ if (result == LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01744)
+ "auth_ldap authorize: checking dn match %s", dn);
+ if (sec->compare_as_user) {
+ /* ldap-filter is the only authz that requires a search and a compare */
+ apr_pool_cleanup_kill(r->pool, ldc, authnz_ldap_cleanup_connection_close);
+ authnz_ldap_cleanup_connection_close(ldc);
+ ldc = get_connection_for_authz(r, LDAP_COMPARE);
+ }
+ result = util_ldap_cache_comparedn(r, ldc, sec->url, req->dn, dn,
+ sec->compare_dn_on_server);
+ }
+
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01745)
+ "auth_ldap authorize: require ldap-filter: "
+ "authorization successful");
+ set_request_vars(r, LDAP_AUTHZ);
+ return AUTHZ_GRANTED;
+ }
+ case LDAP_FILTER_ERROR: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01746)
+ "auth_ldap authorize: require ldap-filter: "
+ "%s authorization failed [%s][%s]",
+ filtbuf, ldc->reason, ldap_err2string(result));
+ break;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01747)
+ "auth_ldap authorize: require ldap-filter: "
+ "authorization failed [%s][%s]",
+ ldc->reason, ldap_err2string(result));
+ }
+ }
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01748)
+ "auth_ldap authorize filter: authorization denied for "
+ "user %s to %s",
+ r->user, r->uri);
+
+ return AUTHZ_DENIED;
+}
+
+static const char *ldap_parse_config(cmd_parms *cmd, const char *require_line,
+ const void **parsed_require_line)
+{
+ const char *expr_err = NULL;
+ ap_expr_info_t *expr;
+
+ expr = ap_expr_parse_cmd(cmd, require_line, AP_EXPR_FLAG_STRING_RESULT,
+ &expr_err, NULL);
+
+ if (expr_err)
+ return apr_pstrcat(cmd->temp_pool,
+ "Cannot parse expression in require line: ",
+ expr_err, NULL);
+
+ *parsed_require_line = expr;
+
+ return NULL;
+}
+
+
+/*
+ * Use the ldap url parsing routines to break up the ldap url into
+ * host and port.
+ */
+static const char *mod_auth_ldap_parse_url(cmd_parms *cmd,
+ void *config,
+ const char *url,
+ const char *mode)
+{
+ int rc;
+ apr_ldap_url_desc_t *urld;
+ apr_ldap_err_t *result;
+
+ authn_ldap_config_t *sec = config;
+
+ rc = apr_ldap_url_parse(cmd->pool, url, &(urld), &(result));
+ if (rc != APR_SUCCESS) {
+ return result->reason;
+ }
+ sec->url = apr_pstrdup(cmd->pool, url);
+
+ /* Set all the values, or at least some sane defaults */
+ if (sec->host) {
+ sec->host = apr_pstrcat(cmd->pool, urld->lud_host, " ", sec->host, NULL);
+ }
+ else {
+ sec->host = urld->lud_host? apr_pstrdup(cmd->pool, urld->lud_host) : "localhost";
+ }
+ sec->basedn = urld->lud_dn? apr_pstrdup(cmd->pool, urld->lud_dn) : "";
+ if (urld->lud_attrs && urld->lud_attrs[0]) {
+ int i = 1;
+ while (urld->lud_attrs[i]) {
+ i++;
+ }
+ sec->attributes = apr_pcalloc(cmd->pool, sizeof(char *) * (i+1));
+ i = 0;
+ while (urld->lud_attrs[i]) {
+ sec->attributes[i] = apr_pstrdup(cmd->pool, urld->lud_attrs[i]);
+ i++;
+ }
+ sec->attribute = sec->attributes[0];
+ }
+ else {
+ sec->attribute = "uid";
+ }
+
+ sec->scope = urld->lud_scope == LDAP_SCOPE_ONELEVEL ?
+ LDAP_SCOPE_ONELEVEL : LDAP_SCOPE_SUBTREE;
+
+ if (urld->lud_filter) {
+ if (urld->lud_filter[0] == '(') {
+ /*
+ * Get rid of the surrounding parens; later on when generating the
+ * filter, they'll be put back.
+ */
+ sec->filter = apr_pstrmemdup(cmd->pool, urld->lud_filter+1,
+ strlen(urld->lud_filter)-2);
+ }
+ else {
+ sec->filter = apr_pstrdup(cmd->pool, urld->lud_filter);
+ }
+ }
+ else {
+ sec->filter = "objectclass=*";
+ }
+
+ if (mode) {
+ if (0 == strcasecmp("NONE", mode)) {
+ sec->secure = APR_LDAP_NONE;
+ }
+ else if (0 == strcasecmp("SSL", mode)) {
+ sec->secure = APR_LDAP_SSL;
+ }
+ else if (0 == strcasecmp("TLS", mode) || 0 == strcasecmp("STARTTLS", mode)) {
+ sec->secure = APR_LDAP_STARTTLS;
+ }
+ else {
+ return "Invalid LDAP connection mode setting: must be one of NONE, "
+ "SSL, or TLS/STARTTLS";
+ }
+ }
+
+ /* "ldaps" indicates secure ldap connections desired
+ */
+ if (strncasecmp(url, "ldaps", 5) == 0)
+ {
+ sec->secure = APR_LDAP_SSL;
+ sec->port = urld->lud_port? urld->lud_port : LDAPS_PORT;
+ }
+ else
+ {
+ sec->port = urld->lud_port? urld->lud_port : LDAP_PORT;
+ }
+
+ sec->have_ldap_url = 1;
+
+ ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, cmd->server,
+ "auth_ldap url parse: `%s', Host: %s, Port: %d, DN: %s, "
+ "attrib: %s, scope: %s, filter: %s, connection mode: %s",
+ url,
+ urld->lud_host,
+ urld->lud_port,
+ urld->lud_dn,
+ urld->lud_attrs? urld->lud_attrs[0] : "(null)",
+ (urld->lud_scope == LDAP_SCOPE_SUBTREE? "subtree" :
+ urld->lud_scope == LDAP_SCOPE_BASE? "base" :
+ urld->lud_scope == LDAP_SCOPE_ONELEVEL? "onelevel" : "unknown"),
+ urld->lud_filter,
+ sec->secure == APR_LDAP_SSL ? "using SSL": "not using SSL"
+ );
+
+ return NULL;
+}
+
+static const char *mod_auth_ldap_set_deref(cmd_parms *cmd, void *config, const char *arg)
+{
+ authn_ldap_config_t *sec = config;
+
+ if (strcmp(arg, "never") == 0 || strcasecmp(arg, "off") == 0) {
+ sec->deref = never;
+ }
+ else if (strcmp(arg, "searching") == 0) {
+ sec->deref = searching;
+ }
+ else if (strcmp(arg, "finding") == 0) {
+ sec->deref = finding;
+ }
+ else if (strcmp(arg, "always") == 0 || strcasecmp(arg, "on") == 0) {
+ sec->deref = always;
+ }
+ else {
+ return "Unrecognized value for AuthLDAPDereferenceAliases directive";
+ }
+ return NULL;
+}
+
+static const char *mod_auth_ldap_add_subgroup_attribute(cmd_parms *cmd, void *config, const char *arg)
+{
+ int i = 0;
+
+ authn_ldap_config_t *sec = config;
+
+ for (i = 0; sec->sgAttributes[i]; i++) {
+ ;
+ }
+ if (i == GROUPATTR_MAX_ELTS)
+ return "Too many AuthLDAPSubGroupAttribute values";
+
+ sec->sgAttributes[i] = apr_pstrdup(cmd->pool, arg);
+
+ return NULL;
+}
+
+static const char *mod_auth_ldap_add_subgroup_class(cmd_parms *cmd, void *config, const char *arg)
+{
+ struct mod_auth_ldap_groupattr_entry_t *new;
+
+ authn_ldap_config_t *sec = config;
+
+ if (sec->subgroupclasses->nelts > GROUPATTR_MAX_ELTS)
+ return "Too many AuthLDAPSubGroupClass values";
+
+ new = apr_array_push(sec->subgroupclasses);
+ new->name = apr_pstrdup(cmd->pool, arg);
+
+ return NULL;
+}
+
+static const char *mod_auth_ldap_set_subgroup_maxdepth(cmd_parms *cmd,
+ void *config,
+ const char *max_depth)
+{
+ authn_ldap_config_t *sec = config;
+
+ sec->maxNestingDepth = atol(max_depth);
+
+ return NULL;
+}
+
+static const char *mod_auth_ldap_add_group_attribute(cmd_parms *cmd, void *config, const char *arg)
+{
+ struct mod_auth_ldap_groupattr_entry_t *new;
+
+ authn_ldap_config_t *sec = config;
+
+ if (sec->groupattr->nelts > GROUPATTR_MAX_ELTS)
+ return "Too many AuthLDAPGroupAttribute directives";
+
+ new = apr_array_push(sec->groupattr);
+ new->name = apr_pstrdup(cmd->pool, arg);
+
+ return NULL;
+}
+
+static const char *set_charset_config(cmd_parms *cmd, void *config, const char *arg)
+{
+ ap_set_module_config(cmd->server->module_config, &authnz_ldap_module,
+ (void *)arg);
+ return NULL;
+}
+
+static const char *set_bind_pattern(cmd_parms *cmd, void *_cfg, const char *exp, const char *subst)
+{
+ authn_ldap_config_t *sec = _cfg;
+ ap_regex_t *regexp;
+
+ regexp = ap_pregcomp(cmd->pool, exp, AP_REG_EXTENDED);
+
+ if (!regexp) {
+ return apr_pstrcat(cmd->pool, "AuthLDAPInitialBindPattern: cannot compile regular "
+ "expression '", exp, "'", NULL);
+ }
+
+ sec->bind_regex = regexp;
+ sec->bind_subst = subst;
+
+ return NULL;
+}
+
+static const char *set_bind_password(cmd_parms *cmd, void *_cfg, const char *arg)
+{
+ authn_ldap_config_t *sec = _cfg;
+ int arglen = strlen(arg);
+ char **argv;
+ char *result;
+
+ if ((arglen > 5) && strncmp(arg, "exec:", 5) == 0) {
+ if (apr_tokenize_to_argv(arg+5, &argv, cmd->temp_pool) != APR_SUCCESS) {
+ return apr_pstrcat(cmd->pool,
+ "Unable to parse exec arguments from ",
+ arg+5, NULL);
+ }
+ argv[0] = ap_server_root_relative(cmd->temp_pool, argv[0]);
+
+ if (!argv[0]) {
+ return apr_pstrcat(cmd->pool,
+ "Invalid AuthLDAPBindPassword exec location:",
+ arg+5, NULL);
+ }
+ result = ap_get_exec_line(cmd->pool,
+ (const char*)argv[0], (const char * const *)argv);
+
+ if (!result) {
+ return apr_pstrcat(cmd->pool,
+ "Unable to get bind password from exec of ",
+ arg+5, NULL);
+ }
+ sec->bindpw = result;
+ }
+ else {
+ sec->bindpw = (char *)arg;
+ }
+
+ if (!(*sec->bindpw)) {
+ return "Empty passwords are invalid for AuthLDAPBindPassword";
+ }
+
+ return NULL;
+}
+
+static const command_rec authnz_ldap_cmds[] =
+{
+ AP_INIT_TAKE12("AuthLDAPURL", mod_auth_ldap_parse_url, NULL, OR_AUTHCFG,
+ "URL to define LDAP connection. This should be an RFC 2255 compliant\n"
+ "URL of the form ldap://host[:port]/basedn[?attrib[?scope[?filter]]].\n"
+ "<ul>\n"
+ "<li>Host is the name of the LDAP server. Use a space separated list of hosts \n"
+ "to specify redundant servers.\n"
+ "<li>Port is optional, and specifies the port to connect to.\n"
+ "<li>basedn specifies the base DN to start searches from\n"
+ "<li>Attrib specifies what attribute to search for in the directory. If not "
+ "provided, it defaults to <b>uid</b>.\n"
+ "<li>Scope is the scope of the search, and can be either <b>sub</b> or "
+ "<b>one</b>. If not provided, the default is <b>sub</b>.\n"
+ "<li>Filter is a filter to use in the search. If not provided, "
+ "defaults to <b>(objectClass=*)</b>.\n"
+ "</ul>\n"
+ "Searches are performed using the attribute and the filter combined. "
+ "For example, assume that the\n"
+ "LDAP URL is <b>ldap://ldap.airius.com/ou=People, o=Airius?uid?sub?(posixid=*)</b>. "
+ "Searches will\n"
+ "be done using the filter <b>(&((posixid=*))(uid=<i>username</i>))</b>, "
+ "where <i>username</i>\n"
+ "is the user name passed by the HTTP client. The search will be a subtree "
+ "search on the branch <b>ou=People, o=Airius</b>."),
+
+ AP_INIT_TAKE1("AuthLDAPBindDN", ap_set_string_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, binddn), OR_AUTHCFG,
+ "DN to use to bind to LDAP server. If not provided, will do an anonymous bind."),
+
+ AP_INIT_TAKE1("AuthLDAPBindPassword", set_bind_password, NULL, OR_AUTHCFG,
+ "Password to use to bind to LDAP server. If not provided, will do an anonymous bind."),
+
+ AP_INIT_FLAG("AuthLDAPBindAuthoritative", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, bind_authoritative), OR_AUTHCFG,
+ "Set to 'on' to return failures when user-specific bind fails - defaults to on."),
+
+ AP_INIT_FLAG("AuthLDAPRemoteUserIsDN", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, user_is_dn), OR_AUTHCFG,
+ "Set to 'on' to set the REMOTE_USER environment variable to be the full "
+ "DN of the remote user. By default, this is set to off, meaning that "
+ "the REMOTE_USER variable will contain whatever value the remote user sent."),
+
+ AP_INIT_TAKE1("AuthLDAPRemoteUserAttribute", ap_set_string_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, remote_user_attribute), OR_AUTHCFG,
+ "Override the user supplied username and place the "
+ "contents of this attribute in the REMOTE_USER "
+ "environment variable."),
+
+ AP_INIT_FLAG("AuthLDAPCompareDNOnServer", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, compare_dn_on_server), OR_AUTHCFG,
+ "Set to 'on' to force auth_ldap to do DN compares (for the \"require dn\" "
+ "directive) using the server, and set it 'off' to do the compares locally "
+ "(at the expense of possible false matches). See the documentation for "
+ "a complete description of this option."),
+
+ AP_INIT_ITERATE("AuthLDAPSubGroupAttribute", mod_auth_ldap_add_subgroup_attribute, NULL, OR_AUTHCFG,
+ "Attribute labels used to define sub-group (or nested group) membership in groups - "
+ "defaults to member and uniqueMember"),
+
+ AP_INIT_ITERATE("AuthLDAPSubGroupClass", mod_auth_ldap_add_subgroup_class, NULL, OR_AUTHCFG,
+ "LDAP objectClass values used to identify sub-group instances - "
+ "defaults to groupOfNames and groupOfUniqueNames"),
+
+ AP_INIT_TAKE1("AuthLDAPMaxSubGroupDepth", mod_auth_ldap_set_subgroup_maxdepth, NULL, OR_AUTHCFG,
+ "Maximum subgroup nesting depth to be evaluated - defaults to 10 (top-level group = 0)"),
+
+ AP_INIT_ITERATE("AuthLDAPGroupAttribute", mod_auth_ldap_add_group_attribute, NULL, OR_AUTHCFG,
+ "A list of attribute labels used to identify the user members of groups - defaults to "
+ "member and uniquemember"),
+
+ AP_INIT_FLAG("AuthLDAPGroupAttributeIsDN", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, group_attrib_is_dn), OR_AUTHCFG,
+ "If set to 'on', auth_ldap uses the DN that is retrieved from the server for "
+ "subsequent group comparisons. If set to 'off', auth_ldap uses the string "
+ "provided by the client directly. Defaults to 'on'."),
+
+ AP_INIT_TAKE1("AuthLDAPDereferenceAliases", mod_auth_ldap_set_deref, NULL, OR_AUTHCFG,
+ "Determines how aliases are handled during a search. Can be one of the "
+ "values \"never\", \"searching\", \"finding\", or \"always\". "
+ "Defaults to always."),
+
+ AP_INIT_TAKE1("AuthLDAPCharsetConfig", set_charset_config, NULL, RSRC_CONF,
+ "Character set conversion configuration file. If omitted, character set "
+ "conversion is disabled."),
+
+ AP_INIT_TAKE1("AuthLDAPAuthorizePrefix", ap_set_string_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, authz_prefix), OR_AUTHCFG,
+ "The prefix to add to environment variables set during "
+ "successful authorization, default '" AUTHZ_PREFIX "'"),
+
+ AP_INIT_FLAG("AuthLDAPInitialBindAsUser", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, initial_bind_as_user), OR_AUTHCFG,
+ "Set to 'on' to perform the initial DN lookup with the basic auth credentials "
+ "instead of anonymous or hard-coded credentials"),
+
+ AP_INIT_TAKE2("AuthLDAPInitialBindPattern", set_bind_pattern, NULL, OR_AUTHCFG,
+ "The regex and substitution to determine a username that can bind based on an HTTP basic auth username"),
+
+ AP_INIT_FLAG("AuthLDAPSearchAsUser", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, search_as_user), OR_AUTHCFG,
+ "Set to 'on' to perform authorization-based searches with the users credentials, when this module "
+ "has also performed authentication. Does not affect nested groups lookup."),
+ AP_INIT_FLAG("AuthLDAPCompareAsUser", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(authn_ldap_config_t, compare_as_user), OR_AUTHCFG,
+ "Set to 'on' to perform authorization-based compares with the users credentials, when this module "
+ "has also performed authentication. Does not affect nested groups lookups."),
+ {NULL}
+};
+
+static int authnz_ldap_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+ ap_configfile_t *f;
+ char l[MAX_STRING_LEN];
+ const char *charset_confname = ap_get_module_config(s->module_config,
+ &authnz_ldap_module);
+ apr_status_t status;
+
+ /*
+ authn_ldap_config_t *sec = (authn_ldap_config_t *)
+ ap_get_module_config(s->module_config,
+ &authnz_ldap_module);
+
+ if (sec->secure)
+ {
+ if (!util_ldap_ssl_supported(s))
+ {
+ ap_log_error(APLOG_MARK, APLOG_CRIT, 0, s, APLOGNO(03159)
+ "LDAP: SSL connections (ldaps://) not supported by utilLDAP");
+ return(!OK);
+ }
+ }
+ */
+
+ /* make sure that mod_ldap (util_ldap) is loaded */
+ if (ap_find_linked_module("util_ldap.c") == NULL) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(01749)
+ "Module mod_ldap missing. Mod_ldap (aka. util_ldap) "
+ "must be loaded in order for mod_authnz_ldap to function properly");
+ return HTTP_INTERNAL_SERVER_ERROR;
+
+ }
+
+ if (!charset_confname) {
+ return OK;
+ }
+
+ charset_confname = ap_server_root_relative(p, charset_confname);
+ if (!charset_confname) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, APR_EBADPATH, s, APLOGNO(01750)
+ "Invalid charset conversion config path %s",
+ (const char *)ap_get_module_config(s->module_config,
+ &authnz_ldap_module));
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ if ((status = ap_pcfg_openfile(&f, ptemp, charset_confname))
+ != APR_SUCCESS) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, status, s, APLOGNO(01751)
+ "could not open charset conversion config file %s.",
+ charset_confname);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ charset_conversions = apr_hash_make(p);
+
+ while (!(ap_cfg_getline(l, MAX_STRING_LEN, f))) {
+ const char *ll = l;
+ char *lang;
+
+ if (l[0] == '#') {
+ continue;
+ }
+ lang = ap_getword_conf(p, &ll);
+ ap_str_tolower(lang);
+
+ if (ll[0]) {
+ char *charset = ap_getword_conf(p, &ll);
+ apr_hash_set(charset_conversions, lang, APR_HASH_KEY_STRING, charset);
+ }
+ }
+ ap_cfg_closefile(f);
+
+ to_charset = derive_codepage_from_lang (p, "utf-8");
+ if (to_charset == NULL) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, status, s, APLOGNO(01752)
+ "could not find the UTF-8 charset in the file %s.",
+ charset_confname);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ return OK;
+}
+
+static const authn_provider authn_ldap_provider =
+{
+ &authn_ldap_check_password,
+ NULL,
+};
+
+static const authz_provider authz_ldapuser_provider =
+{
+ &ldapuser_check_authorization,
+ &ldap_parse_config,
+};
+static const authz_provider authz_ldapgroup_provider =
+{
+ &ldapgroup_check_authorization,
+ &ldap_parse_config,
+};
+
+static const authz_provider authz_ldapdn_provider =
+{
+ &ldapdn_check_authorization,
+ &ldap_parse_config,
+};
+
+static const authz_provider authz_ldapattribute_provider =
+{
+ &ldapattribute_check_authorization,
+ &ldap_parse_config,
+};
+
+static const authz_provider authz_ldapfilter_provider =
+{
+ &ldapfilter_check_authorization,
+ &ldap_parse_config,
+};
+
+static void ImportULDAPOptFn(void)
+{
+ util_ldap_connection_close = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_close);
+ util_ldap_connection_find = APR_RETRIEVE_OPTIONAL_FN(uldap_connection_find);
+ util_ldap_cache_comparedn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_comparedn);
+ util_ldap_cache_compare = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_compare);
+ util_ldap_cache_checkuserid = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_checkuserid);
+ util_ldap_cache_getuserdn = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_getuserdn);
+ util_ldap_ssl_supported = APR_RETRIEVE_OPTIONAL_FN(uldap_ssl_supported);
+ util_ldap_cache_check_subgroups = APR_RETRIEVE_OPTIONAL_FN(uldap_cache_check_subgroups);
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+ /* Register authn provider */
+ ap_register_auth_provider(p, AUTHN_PROVIDER_GROUP, "ldap",
+ AUTHN_PROVIDER_VERSION,
+ &authn_ldap_provider, AP_AUTH_INTERNAL_PER_CONF);
+
+ /* Register authz providers */
+ ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ldap-user",
+ AUTHZ_PROVIDER_VERSION,
+ &authz_ldapuser_provider,
+ AP_AUTH_INTERNAL_PER_CONF);
+ ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ldap-group",
+ AUTHZ_PROVIDER_VERSION,
+ &authz_ldapgroup_provider,
+ AP_AUTH_INTERNAL_PER_CONF);
+ ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ldap-dn",
+ AUTHZ_PROVIDER_VERSION,
+ &authz_ldapdn_provider,
+ AP_AUTH_INTERNAL_PER_CONF);
+ ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ldap-attribute",
+ AUTHZ_PROVIDER_VERSION,
+ &authz_ldapattribute_provider,
+ AP_AUTH_INTERNAL_PER_CONF);
+ ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ldap-filter",
+ AUTHZ_PROVIDER_VERSION,
+ &authz_ldapfilter_provider,
+ AP_AUTH_INTERNAL_PER_CONF);
+
+ ap_hook_post_config(authnz_ldap_post_config,NULL,NULL,APR_HOOK_MIDDLE);
+
+ ap_hook_optional_fn_retrieve(ImportULDAPOptFn,NULL,NULL,APR_HOOK_MIDDLE);
+}
+
+AP_DECLARE_MODULE(authnz_ldap) =
+{
+ STANDARD20_MODULE_STUFF,
+ create_authnz_ldap_dir_config, /* dir config creater */
+ NULL, /* dir merger --- default is to override */
+ NULL, /* server config */
+ NULL, /* merge server config */
+ authnz_ldap_cmds, /* command apr_table_t */
+ register_hooks /* register hooks */
+};