--- /dev/null
+/* ====================================================================
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000-2001 The Apache Software Foundation. All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ * if any, must include the following acknowledgment:
+ * "This product includes software developed by the
+ * Apache Software Foundation (http://www.apache.org/)."
+ * Alternately, this acknowledgment may appear in the software itself,
+ * if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Apache" and "Apache Software Foundation" must
+ * not be used to endorse or promote products derived from this
+ * software without prior written permission. For written
+ * permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache",
+ * nor may "Apache" appear in their name, without prior written
+ * permission of the Apache Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+/*
+ * mod_auth_ldap.c: LDAP authentication module
+ *
+ * Original code from auth_ldap module for Apache v1.3:
+ * Copyright 1998, 1999 Enbridge Pipelines Inc.
+ * Copyright 1999-2001 Dave Carrigan
+ */
+
+/* for getpid() */
+#include <unistd.h>
+
+#include <apr_ldap.h>
+#include <apr_strings.h>
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_core.h"
+#include "http_log.h"
+#include "http_protocol.h"
+#include "http_request.h"
+#include "util_ldap.h"
+
+/* per directory configuration */
+typedef struct {
+ apr_pool_t *pool; /* Pool that this config is allocated from */
+ apr_lock_t *lock; /* Lock for this config */
+ int auth_authoritative; /* Is this auth method the one and only? */
+ int enabled; /* Is auth_ldap enabled in this directory? */
+
+ /* 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 */
+ 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 frontpage_hack; /* Hack for frontpage support */
+ int user_is_dn; /* If true, connection->user is DN instead of userid */
+ 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 */
+ int group_attrib_is_dn; /* If true, the group attribute is the DN, otherwise,
+ it's the exact string passed by the HTTP client */
+
+ int netscapessl; /* True if Netscape SSL is enabled */
+ int starttls; /* True if StartTLS is enabled */
+} mod_auth_ldap_config_t;
+
+typedef struct mod_auth_ldap_request_t {
+ char *dn; /* The saved dn from a successful search */
+ char *user; /* The username provided by the client */
+} mod_auth_ldap_request_t;
+
+/* maximum group elements supported */
+#define GROUPATTR_MAX_ELTS 10
+
+struct mod_auth_ldap_groupattr_entry_t {
+ char *name;
+};
+
+module AP_MODULE_DECLARE_DATA auth_ldap_module;
+
+/* function prototypes */
+void mod_auth_ldap_build_filter(char *filtbuf,
+ request_rec *r,
+ mod_auth_ldap_config_t *sec);
+int mod_auth_ldap_check_user_id(request_rec *r);
+int mod_auth_ldap_auth_checker(request_rec *r);
+void *mod_auth_ldap_create_dir_config(apr_pool_t *p, char *d);
+
+/* ---------------------------------------- */
+
+
+/*
+ * 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
+void mod_auth_ldap_build_filter(char *filtbuf,
+ request_rec *r,
+ mod_auth_ldap_config_t *sec)
+{
+ char *p, *q, *filtbuf_end;
+ /*
+ * Create the first part of the filter, which consists of the
+ * config-supplied portions.
+ */
+ apr_snprintf(filtbuf, FILTER_LENGTH, "(&(%s)(%s=", sec->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;
+ for (p = r->user, q=filtbuf + strlen(filtbuf);
+ *p && q < filtbuf_end; *q++ = *p++) {
+ if (strchr("*()\\", *p) != NULL) {
+ *q++ = '\\';
+ if (q >= filtbuf_end) {
+ break;
+ }
+ }
+ }
+ *q = '\0';
+
+ /*
+ * Append the closing parens of the filter, unless doing so would
+ * overrun the buffer.
+ */
+ if (q + 2 <= filtbuf_end)
+ strcat(filtbuf, "))");
+}
+
+
+/*
+ * 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.
+ *
+ */
+int mod_auth_ldap_check_user_id(request_rec *r)
+{
+ char filtbuf[FILTER_LENGTH];
+ mod_auth_ldap_config_t *sec =
+ (mod_auth_ldap_config_t *)ap_get_module_config(r->per_dir_config, &auth_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+ const char *sent_pw;
+ int result = 0;
+ const char *dn = NULL;
+
+ mod_auth_ldap_request_t *req =
+ (mod_auth_ldap_request_t *)apr_pcalloc(r->pool, sizeof(mod_auth_ldap_request_t));
+ ap_set_module_config(r->request_config, &auth_ldap_module, req);
+
+ if (!sec->enabled) {
+ return DECLINED;
+ }
+
+ /*
+ * Basic sanity checks before any LDAP operations even happen.
+ */
+ if (!sec->have_ldap_url) {
+ return DECLINED;
+ }
+
+ /* There is a good AuthLDAPURL, right? */
+ if (sec->host) {
+ ldc = util_ldap_connection_find(r, sec->host, sec->port,
+ sec->binddn, sec->bindpw, sec->deref,
+ sec->netscapessl, sec->starttls);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authenticate: no sec->host - weird...?", getpid());
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED : DECLINED;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authenticate: using URL %s", getpid(), sec->url);
+
+ /* Get the password that the client sent */
+ if ((result = ap_get_basic_auth_pw(r, &sent_pw))) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authenticate: "
+ "ap_get_basic_auth_pw() returns %d", getpid(), result);
+ util_ldap_connection_close(ldc);
+ return result;
+ }
+
+ /* build the username filter */
+ mod_auth_ldap_build_filter(filtbuf, r, sec);
+
+ /* do the user search */
+ result = util_ldap_cache_checkuserid(r, ldc, sec->url, sec->basedn, sec->scope, filtbuf, sent_pw, &dn);
+ util_ldap_connection_close(ldc);
+
+ if (result != LDAP_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authenticate: "
+ "user %s authentication failed; URI %s [%s][%s]",
+ getpid(), r->user, r->uri, ldc->reason, ldap_err2string(result));
+ if (LDAP_INVALID_CREDENTIALS == result) {
+ ap_note_basic_auth_failure(r);
+ return HTTP_UNAUTHORIZED;
+ }
+ else {
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED: DECLINED;
+ }
+ }
+
+ /* mark the user and DN */
+ req->dn = apr_pstrdup(r->pool, dn);
+ req->user = r->user;
+ if (sec->user_is_dn) {
+ r->user = req->dn;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authenticate: accepting %s", getpid(), r->user);
+
+ return OK;
+}
+
+
+/*
+ * Authorisation Phase
+ * -------------------
+ *
+ * After checking whether the username and password are correct, we need
+ * to check whether that user is authorised to view this resource. The
+ * require directive is used to do this:
+ *
+ * require valid-user Any authenticated is allowed in.
+ * require user <username> This particular user is allowed in.
+ * require group <groupname> The user must be a member of this group
+ * in order to be allowed in.
+ * require dn <dn> The user must have the following DN in the
+ * LDAP tree to be let in.
+ *
+ */
+int mod_auth_ldap_auth_checker(request_rec *r)
+{
+ int result = 0;
+ mod_auth_ldap_request_t *req =
+ (mod_auth_ldap_request_t *)ap_get_module_config(r->request_config,
+ &auth_ldap_module);
+ mod_auth_ldap_config_t *sec =
+ (mod_auth_ldap_config_t *)ap_get_module_config(r->per_dir_config,
+ &auth_ldap_module);
+
+ util_ldap_connection_t *ldc = NULL;
+ int m = r->method_number;
+
+ const apr_array_header_t *reqs_arr = ap_requires(r);
+ require_line *reqs = reqs_arr ? (require_line *)reqs_arr->elts : NULL;
+
+ register int x;
+ const char *t;
+ char *w;
+ int method_restricted = 0;
+
+ if (!sec->enabled) {
+ return DECLINED;
+ }
+
+ if (!sec->have_ldap_url) {
+ return DECLINED;
+ }
+
+ if (sec->host) {
+ ldc = util_ldap_connection_find(r, sec->host, sec->port,
+ sec->binddn, sec->bindpw, sec->deref,
+ sec->netscapessl, sec->starttls);
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: no sec->host - weird...?", getpid());
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED : DECLINED;
+ }
+
+ /*
+ * 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;
+ apr_lock_acquire(sec->lock);
+ grp = apr_array_push(sec->groupattr);
+ grp->name = "member";
+ grp = apr_array_push(sec->groupattr);
+ grp->name = "uniquemember";
+ apr_lock_release(sec->lock);
+ }
+
+ if (!reqs_arr) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: no requirements array", getpid());
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED : DECLINED;
+ }
+
+ /* Loop through the requirements array until there's no elements
+ * left, or something causes a return from inside the loop */
+ for(x=0; x < reqs_arr->nelts; x++) {
+ if (! (reqs[x].method_mask & (1 << m))) {
+ continue;
+ }
+ method_restricted = 1;
+
+ t = reqs[x].requirement;
+ w = ap_getword(r->pool, &t, ' ');
+
+ if (strcmp(w, "valid-user") == 0) {
+ /*
+ * Valid user will always be true if we authenticated with ldap,
+ * but when using front page, valid user should only be true if
+ * he exists in the frontpage password file. This hack will get
+ * auth_ldap to look up the user in the the pw file to really be
+ * sure that he's valid. Naturally, it requires mod_auth to be
+ * compiled in, but if mod_auth wasn't in there, then the need
+ * for this hack wouldn't exist anyway.
+ */
+ if (sec->frontpage_hack) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "deferring authorisation to mod_auth (FP Hack)",
+ getpid());
+ return OK;
+ }
+ else {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "successful authorisation because user "
+ "is valid-user", getpid());
+ return OK;
+ }
+ }
+ else if (strcmp(w, "user") == 0) {
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require user: user's DN has not been defined; failing authorisation",
+ getpid());
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED : DECLINED;
+ }
+ /*
+ * 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, t);
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require user: authorisation successful", getpid());
+ return OK;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: require user: "
+ "authorisation failed [%s][%s]", getpid(),
+ ldc->reason, ldap_err2string(result));
+ }
+ }
+ /*
+ * Now break apart the line and compare each word on it
+ */
+ while (t[0]) {
+ w = ap_getword_conf(r->pool, &t);
+ 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|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require user: authorisation successful", getpid());
+ return OK;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require user: authorisation failed [%s][%s]",
+ getpid(), ldc->reason, ldap_err2string(result));
+ }
+ }
+ }
+ }
+ else if (strcmp(w, "dn") == 0) {
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require dn: user's DN has not been defined; failing authorisation",
+ getpid());
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED : DECLINED;
+ }
+
+ 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|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require dn: authorisation successful", getpid());
+ return OK;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: "
+ "require dn: LDAP error [%s][%s]",
+ getpid(), ldc->reason, ldap_err2string(result));
+ }
+ }
+ }
+ else if (strcmp(w, "group") == 0) {
+ struct mod_auth_ldap_groupattr_entry_t *ent = (struct mod_auth_ldap_groupattr_entry_t *) sec->groupattr->elts;
+ int i;
+
+ if (sec->group_attrib_is_dn) {
+ if (req->dn == NULL || strlen(req->dn) == 0) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: require group: user's DN has not been defined; failing authorisation",
+ getpid());
+ return sec->auth_authoritative? HTTP_UNAUTHORIZED : DECLINED;
+ }
+ }
+ 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;
+ }
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: require group: testing for group membership in `%s'",
+ getpid(), t);
+
+ for (i = 0; i < sec->groupattr->nelts; i++) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: require group: testing for %s: %s (%s)", getpid(),
+ 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);
+ switch(result) {
+ case LDAP_COMPARE_TRUE: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: require group: "
+ "authorisation successful (attribute %s)",
+ getpid(), ent[i].name);
+ return OK;
+ }
+ default: {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: require group: "
+ "authorisation failed [%s][%s]",
+ getpid(), ldc->reason, ldap_err2string(result));
+ }
+ }
+ }
+ }
+ }
+
+ if (!method_restricted) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: agreeing because non-restricted",
+ getpid());
+ return OK;
+ }
+
+ if (!sec->auth_authoritative) {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: declining to authorise", getpid());
+ return DECLINED;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r,
+ "[%d] auth_ldap authorise: authorisation denied", getpid());
+ ap_note_basic_auth_failure (r);
+
+ return HTTP_UNAUTHORIZED;
+}
+
+
+/* ---------------------------------------- */
+/* config directives */
+
+
+void *mod_auth_ldap_create_dir_config(apr_pool_t *p, char *d)
+{
+ mod_auth_ldap_config_t *sec =
+ (mod_auth_ldap_config_t *)apr_pcalloc(p, sizeof(mod_auth_ldap_config_t));
+
+ sec->pool = p;
+ apr_lock_create(&sec->lock, APR_MUTEX, APR_INTRAPROCESS, NULL, p);
+ sec->auth_authoritative = 1;
+ sec->enabled = 1;
+ sec->groupattr = 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->deref = always;
+ sec->group_attrib_is_dn = 1;
+
+ sec->frontpage_hack = 0;
+ sec->netscapessl = 0;
+ sec->starttls = 0;
+
+ sec->user_is_dn = 0;
+ sec->compare_dn_on_server = 0;
+
+ return sec;
+}
+
+/*
+ * 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)
+{
+ int result;
+ LDAPURLDesc *urld;
+
+ mod_auth_ldap_config_t *sec = config;
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Trying to parse an url `%s'",
+ url);
+
+ result = ldap_url_parse(url, &(urld));
+ if (result != LDAP_SUCCESS) {
+ switch (result) {
+ case LDAP_URL_ERR_NOTLDAP:
+ return "LDAP URL does not begin with ldap://";
+ case LDAP_URL_ERR_NODN:
+ return "LDAP URL does not have a DN";
+ case LDAP_URL_ERR_BADSCOPE:
+ return "LDAP URL has an invalid scope";
+ case LDAP_URL_ERR_MEM:
+ return "Out of memory parsing LDAP URL";
+ default:
+ return "Could not parse LDAP URL";
+ }
+ }
+ sec->url = apr_pstrdup(cmd->pool, url);
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Url parse: Host: %s", urld->lud_host);
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Url parse: Port: %d", urld->lud_port);
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Url parse: DN: %s", urld->lud_dn);
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Url parse: Attrib: %s", urld->lud_attrs? urld->lud_attrs[0] : "(null)");
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Url parse: Scope: %s",
+ (urld->lud_scope == LDAP_SCOPE_SUBTREE? "subtree" :
+ urld->lud_scope == LDAP_SCOPE_BASE? "base" :
+ urld->lud_scope == LDAP_SCOPE_ONELEVEL? "onelevel" : "unknown"));
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "Url parse: Filter: %s", urld->lud_filter);
+
+ /* Set all the values, or at least some sane defaults */
+ if (sec->host) {
+ char *p = apr_palloc(cmd->pool, strlen(sec->host) + strlen(urld->lud_host) + 2);
+ strcpy(p, urld->lud_host);
+ strcat(p, " ");
+ strcat(p, sec->host);
+ sec->host = p;
+ }
+ 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]) {
+ sec->attribute = apr_pstrdup(cmd->pool, urld->lud_attrs[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_pstrdup(cmd->pool, urld->lud_filter+1);
+ sec->filter[strlen(sec->filter)-1] = '\0';
+ }
+ else {
+ sec->filter = apr_pstrdup(cmd->pool, urld->lud_filter);
+ }
+ }
+ else {
+ sec->filter = "objectclass=*";
+ }
+ if (strncmp(url, "ldaps", 5) == 0) {
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "[%d] auth_ldap parse url: requesting secure LDAP", getpid());
+#ifdef APU_HAS_LDAP_STARTTLS
+ sec->port = urld->lud_port? urld->lud_port : LDAPS_PORT;
+ sec->starttls = 1;
+#else
+#ifdef APU_HAS_LDAP_NETSCAPE_SSL
+ sec->port = urld->lud_port? urld->lud_port : LDAPS_PORT;
+ sec->netscapessl = 1;
+#else
+ return "Secure LDAP (ldaps://) not supported. Rebuild APR-Util";
+#endif
+#endif
+ }
+ else {
+ ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0,
+ cmd->server, "[%d] auth_ldap parse url: not requesting secure LDAP", getpid());
+ sec->netscapessl = 0;
+ sec->starttls = 0;
+ sec->port = urld->lud_port? urld->lud_port : LDAP_PORT;
+ }
+
+ sec->have_ldap_url = 1;
+ ldap_free_urldesc(urld);
+ return NULL;
+}
+
+static const char *mod_auth_ldap_set_deref(cmd_parms *cmd, void *config, const char *arg)
+{
+ mod_auth_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 AuthLDAPAliasDereference directive";
+ }
+ 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;
+
+ mod_auth_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;
+}
+
+command_rec mod_auth_ldap_cmds[] = {
+ AP_INIT_TAKE1("AuthLDAPURL", mod_auth_ldap_parse_url, NULL, OR_AUTHCFG,
+ "URL to define LDAP connection. This should be an RFC 2255 complaint\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 *)XtOffsetOf(mod_auth_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", ap_set_string_slot,
+ (void *)XtOffsetOf(mod_auth_ldap_config_t, bindpw), OR_AUTHCFG,
+ "Password to use to bind to LDAP server. If not provided, will do an anonymous bind."),
+
+ AP_INIT_FLAG("AuthLDAPRemoteUserIsDN", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_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_FLAG("AuthLDAPAuthoritative", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_ldap_config_t, auth_authoritative), OR_AUTHCFG,
+ "Set to 'off' to allow access control to be passed along to lower modules if "
+ "the UserID and/or group is not known to this module"),
+
+ AP_INIT_FLAG("AuthLDAPCompareDNOnServer", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_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("AuthLDAPGroupAttribute", mod_auth_ldap_add_group_attribute, NULL, OR_AUTHCFG,
+ "A list of attributes used to define group membership - defaults to "
+ "member and uniquemember"),
+
+ AP_INIT_FLAG("AuthLDAPGroupAttributeIsDN", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_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 bo one of the"
+ "values \"never\", \"searching\", \"finding\", or \"always\". "
+ "Defaults to always."),
+
+ AP_INIT_FLAG("AuthLDAPEnabled", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_ldap_config_t, enabled), OR_AUTHCFG,
+ "Set to off to disable auth_ldap, even if it's been enabled in a higher tree"),
+
+ AP_INIT_FLAG("AuthLDAPFrontPageHack", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_ldap_config_t, frontpage_hack), OR_AUTHCFG,
+ "Set to 'on' to support Microsoft FrontPage"),
+
+#ifdef APU_HAS_LDAP_STARTTLS
+ AP_INIT_FLAG("AuthLDAPStartTLS", ap_set_flag_slot,
+ (void *)XtOffsetOf(mod_auth_ldap_config_t, starttls), OR_AUTHCFG,
+ "Set to 'on' to start TLS after connecting to the LDAP server."),
+#endif /* APU_HAS_LDAP_STARTTLS */
+
+ {NULL}
+};
+
+static void mod_auth_ldap_register_hooks(apr_pool_t *p)
+{
+ ap_hook_check_user_id(mod_auth_ldap_check_user_id, NULL, NULL, APR_HOOK_MIDDLE);
+ ap_hook_auth_checker(mod_auth_ldap_auth_checker, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+module auth_ldap_module = {
+ STANDARD20_MODULE_STUFF,
+ mod_auth_ldap_create_dir_config, /* dir config creater */
+ NULL, /* dir merger --- default is to override */
+ NULL, /* server config */
+ NULL, /* merge server config */
+ mod_auth_ldap_cmds, /* command table */
+ mod_auth_ldap_register_hooks, /* set up request processing hooks */
+};
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