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#include "first.h"
#include <ldap.h>
#include "server.h"
#include "http_auth.h"
#include "log.h"
#include "plugin.h"
#include <errno.h>
#include <string.h>
typedef struct {
LDAP *ldap;
server *srv;
buffer *auth_ldap_hostname;
buffer *auth_ldap_basedn;
buffer *auth_ldap_binddn;
buffer *auth_ldap_bindpw;
buffer *auth_ldap_filter;
buffer *auth_ldap_cafile;
buffer *auth_ldap_groupmember;
unsigned short auth_ldap_starttls;
unsigned short auth_ldap_allow_empty_pw;
} plugin_config;
typedef struct {
PLUGIN_DATA;
plugin_config **config_storage;
plugin_config conf, *anon_conf; /* this is only used as long as no handler_ctx is setup */
buffer *ldap_filter;
} plugin_data;
static handler_t mod_authn_ldap_basic(server *srv, connection *con, void *p_d, const http_auth_require_t *require, const buffer *username, const char *pw);
INIT_FUNC(mod_authn_ldap_init) {
static http_auth_backend_t http_auth_backend_ldap =
{ "ldap", mod_authn_ldap_basic, NULL, NULL };
plugin_data *p = calloc(1, sizeof(*p));
p->ldap_filter = buffer_init();
/* register http_auth_backend_ldap */
http_auth_backend_ldap.p_d = p;
http_auth_backend_set(&http_auth_backend_ldap);
return p;
}
FREE_FUNC(mod_authn_ldap_free) {
plugin_data *p = p_d;
UNUSED(srv);
if (!p) return HANDLER_GO_ON;
buffer_free(p->ldap_filter);
if (p->config_storage) {
size_t i;
for (i = 0; i < srv->config_context->used; i++) {
plugin_config *s = p->config_storage[i];
if (NULL == s) continue;
buffer_free(s->auth_ldap_hostname);
buffer_free(s->auth_ldap_basedn);
buffer_free(s->auth_ldap_binddn);
buffer_free(s->auth_ldap_bindpw);
buffer_free(s->auth_ldap_filter);
buffer_free(s->auth_ldap_cafile);
buffer_free(s->auth_ldap_groupmember);
if (NULL != s->ldap) ldap_unbind_ext_s(s->ldap, NULL, NULL);
free(s);
}
free(p->config_storage);
}
free(p);
return HANDLER_GO_ON;
}
/*(copied from mod_vhostdb_ldap.c)*/
static void mod_authn_add_scheme (server *srv, buffer *host)
{
if (!buffer_string_is_empty(host)) {
/* reformat hostname(s) as LDAP URIs (scheme://host:port) */
static const char *schemes[] = {
"ldap://", "ldaps://", "ldapi://", "cldap://"
};
char *b, *e = host->ptr;
buffer_string_set_length(srv->tmp_buf, 0);
while (*(b = e)) {
unsigned int j;
while (*b==' '||*b=='\t'||*b=='\r'||*b=='\n'||*b==',') ++b;
if (*b == '\0') break;
e = b;
while (*e!=' '&&*e!='\t'&&*e!='\r'&&*e!='\n'&&*e!=','&&*e!='\0')
++e;
if (!buffer_string_is_empty(srv->tmp_buf))
buffer_append_string_len(srv->tmp_buf, CONST_STR_LEN(","));
for (j = 0; j < sizeof(schemes)/sizeof(char *); ++j) {
if (0 == strncasecmp(b, schemes[j], strlen(schemes[j]))) {
break;
}
}
if (j == sizeof(schemes)/sizeof(char *))
buffer_append_string_len(srv->tmp_buf,
CONST_STR_LEN("ldap://"));
buffer_append_string_len(srv->tmp_buf, b, (size_t)(e - b));
}
buffer_copy_buffer(host, srv->tmp_buf);
}
}
SETDEFAULTS_FUNC(mod_authn_ldap_set_defaults) {
plugin_data *p = p_d;
size_t i;
config_values_t cv[] = {
{ "auth.backend.ldap.hostname", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
{ "auth.backend.ldap.base-dn", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
{ "auth.backend.ldap.filter", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
{ "auth.backend.ldap.ca-file", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 3 */
{ "auth.backend.ldap.starttls", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 4 */
{ "auth.backend.ldap.bind-dn", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 5 */
{ "auth.backend.ldap.bind-pw", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 6 */
{ "auth.backend.ldap.allow-empty-pw", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 7 */
{ "auth.backend.ldap.groupmember", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 8 */
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
for (i = 0; i < srv->config_context->used; i++) {
data_config const* config = (data_config const*)srv->config_context->data[i];
plugin_config *s;
s = calloc(1, sizeof(plugin_config));
s->auth_ldap_hostname = buffer_init();
s->auth_ldap_basedn = buffer_init();
s->auth_ldap_binddn = buffer_init();
s->auth_ldap_bindpw = buffer_init();
s->auth_ldap_filter = buffer_init();
s->auth_ldap_cafile = buffer_init();
s->auth_ldap_groupmember = buffer_init_string("memberUid");
s->auth_ldap_starttls = 0;
s->ldap = NULL;
cv[0].destination = s->auth_ldap_hostname;
cv[1].destination = s->auth_ldap_basedn;
cv[2].destination = s->auth_ldap_filter;
cv[3].destination = s->auth_ldap_cafile;
cv[4].destination = &(s->auth_ldap_starttls);
cv[5].destination = s->auth_ldap_binddn;
cv[6].destination = s->auth_ldap_bindpw;
cv[7].destination = &(s->auth_ldap_allow_empty_pw);
cv[8].destination = s->auth_ldap_groupmember;
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
return HANDLER_ERROR;
}
if (!buffer_string_is_empty(s->auth_ldap_filter)) {
if (*s->auth_ldap_filter->ptr != ',') {
/*(translate '$' to '?' for consistency with other modules)*/
char *d = s->auth_ldap_filter->ptr;
for (; NULL != (d = strchr(d, '$')); ++d) *d = '?';
if (NULL == strchr(s->auth_ldap_filter->ptr, '?')) {
log_error_write(srv, __FILE__, __LINE__, "s", "ldap: auth.backend.ldap.filter is missing a replace-operator '?'");
return HANDLER_ERROR;
}
}
}
mod_authn_add_scheme(srv, s->auth_ldap_hostname);
}
return HANDLER_GO_ON;
}
#define PATCH(x) \
p->conf.x = s->x;
static int mod_authn_ldap_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(auth_ldap_hostname);
PATCH(auth_ldap_basedn);
PATCH(auth_ldap_binddn);
PATCH(auth_ldap_bindpw);
PATCH(auth_ldap_filter);
PATCH(auth_ldap_cafile);
PATCH(auth_ldap_starttls);
PATCH(auth_ldap_allow_empty_pw);
PATCH(auth_ldap_groupmember);
p->anon_conf = s;
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
data_config *dc = (data_config *)srv->config_context->data[i];
s = p->config_storage[i];
/* condition didn't match */
if (!config_check_cond(srv, con, dc)) continue;
/* merge config */
for (j = 0; j < dc->value->used; j++) {
data_unset *du = dc->value->data[j];
if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.hostname"))) {
PATCH(auth_ldap_hostname);
p->anon_conf = s;
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.base-dn"))) {
PATCH(auth_ldap_basedn);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.filter"))) {
PATCH(auth_ldap_filter);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.ca-file"))) {
PATCH(auth_ldap_cafile);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.starttls"))) {
PATCH(auth_ldap_starttls);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.bind-dn"))) {
PATCH(auth_ldap_binddn);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.bind-pw"))) {
PATCH(auth_ldap_bindpw);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.allow-empty-pw"))) {
PATCH(auth_ldap_allow_empty_pw);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("auth.backend.ldap.groupmember"))) {
PATCH(auth_ldap_groupmember);
}
}
}
return 0;
}
#undef PATCH
static void mod_authn_ldap_err(server *srv, const char *file, unsigned long line, const char *fn, int err)
{
log_error_write(srv,file,line,"sSss","ldap:",fn,":",ldap_err2string(err));
}
static void mod_authn_ldap_opt_err(server *srv, const char *file, unsigned long line, const char *fn, LDAP *ld)
{
int err;
ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &err);
mod_authn_ldap_err(srv, file, line, fn, err);
}
static void mod_authn_append_ldap_dn_escape(buffer * const filter, const buffer * const raw) {
/* [RFC4514] 2.4 Converting an AttributeValue from ASN.1 to a String
*
* https://www.ldap.com/ldap-dns-and-rdns
* http://social.technet.microsoft.com/wiki/contents/articles/5312.active-directory-characters-to-escape.aspx
*/
const char * const b = raw->ptr;
const size_t rlen = buffer_string_length(raw);
if (0 == rlen) return;
if (b[0] == ' ') { /* || b[0] == '#' handled below for MS Active Directory*/
/* escape leading ' ' */
buffer_append_string_len(filter, CONST_STR_LEN("\\"));
}
for (size_t i = 0; i < rlen; ++i) {
size_t len = i;
int bs = 0;
do {
/* encode all UTF-8 chars with high bit set
* (instead of validating UTF-8 and escaping only invalid UTF-8) */
if (((unsigned char *)b)[len] > 0x7f)
break;
switch (b[len]) {
default:
continue;
case '"': case '+': case ',': case ';': case '\\':
case '<': case '>':
case '=': case '#': /* (for MS Active Directory) */
bs = 1;
break;
case '\0':
break;
}
break;
} while (++len < rlen);
len -= i;
if (len) {
buffer_append_string_len(filter, b+i, len);
if ((i += len) == rlen) break;
}
if (bs) {
buffer_append_string_len(filter, CONST_STR_LEN("\\"));
buffer_append_string_len(filter, b+i, 1);
}
else {
/* escape NUL ('\0') (and all UTF-8 chars with high bit set) */
char *f;
buffer_string_prepare_append(filter, 3);
f = filter->ptr + buffer_string_length(filter);
f[0] = '\\';
f[1] = "0123456789abcdef"[(((unsigned char *)b)[i] >> 4) & 0xf];
f[2] = "0123456789abcdef"[(((unsigned char *)b)[i] ) & 0xf];
buffer_commit(filter, 3);
}
}
if (rlen > 1 && b[rlen-1] == ' ') {
/* escape trailing ' ' */
filter->ptr[buffer_string_length(filter)-1] = '\\';
buffer_append_string_len(filter, CONST_STR_LEN(" "));
}
}
static void mod_authn_append_ldap_filter_escape(buffer * const filter, const buffer * const raw) {
/* [RFC4515] 3. String Search Filter Definition
*
* [...]
*
* The <valueencoding> rule ensures that the entire filter string is a
* valid UTF-8 string and provides that the octets that represent the
* ASCII characters "*" (ASCII 0x2a), "(" (ASCII 0x28), ")" (ASCII
* 0x29), "\" (ASCII 0x5c), and NUL (ASCII 0x00) are represented as a
* backslash "\" (ASCII 0x5c) followed by the two hexadecimal digits
* representing the value of the encoded octet.
*
* [...]
*
* As indicated by the <valueencoding> rule, implementations MUST escape
* all octets greater than 0x7F that are not part of a valid UTF-8
* encoding sequence when they generate a string representation of a
* search filter. Implementations SHOULD accept as input strings that
* are not valid UTF-8 strings. This is necessary because RFC 2254 did
* not clearly define the term "string representation" (and in
* particular did not mention that the string representation of an LDAP
* search filter is a string of UTF-8-encoded Unicode characters).
*
*
* https://www.ldap.com/ldap-filters
* Although not required, you may escape any other characters that you want
* in the assertion value (or substring component) of a filter. This may be
* accomplished by prefixing the hexadecimal representation of each byte of
* the UTF-8 encoding of the character to escape with a backslash character.
*/
const char * const b = raw->ptr;
const size_t rlen = buffer_string_length(raw);
for (size_t i = 0; i < rlen; ++i) {
size_t len = i;
char *f;
do {
/* encode all UTF-8 chars with high bit set
* (instead of validating UTF-8 and escaping only invalid UTF-8) */
if (((unsigned char *)b)[len] > 0x7f)
break;
switch (b[len]) {
default:
continue;
case '\0': case '(': case ')': case '*': case '\\':
break;
}
break;
} while (++len < rlen);
len -= i;
if (len) {
buffer_append_string_len(filter, b+i, len);
if ((i += len) == rlen) break;
}
/* escape * ( ) \ NUL ('\0') (and all UTF-8 chars with high bit set) */
buffer_string_prepare_append(filter, 3);
f = filter->ptr + buffer_string_length(filter);
f[0] = '\\';
f[1] = "0123456789abcdef"[(((unsigned char *)b)[i] >> 4) & 0xf];
f[2] = "0123456789abcdef"[(((unsigned char *)b)[i] ) & 0xf];
buffer_commit(filter, 3);
}
}
static LDAP * mod_authn_ldap_host_init(server *srv, plugin_config *s) {
LDAP *ld;
int ret;
if (buffer_string_is_empty(s->auth_ldap_hostname)) return NULL;
if (LDAP_SUCCESS != ldap_initialize(&ld, s->auth_ldap_hostname->ptr)) {
log_error_write(srv, __FILE__, __LINE__, "sss", "ldap:",
"ldap_initialize():", strerror(errno));
return NULL;
}
ret = LDAP_VERSION3;
ret = ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &ret);
if (LDAP_OPT_SUCCESS != ret) {
mod_authn_ldap_err(srv, __FILE__, __LINE__, "ldap_set_option()", ret);
ldap_destroy(ld);
return NULL;
}
if (s->auth_ldap_starttls) {
/* if no CA file is given, it is ok, as we will use encryption
* if the server requires a CAfile it will tell us */
if (!buffer_string_is_empty(s->auth_ldap_cafile)) {
ret = ldap_set_option(NULL, LDAP_OPT_X_TLS_CACERTFILE,
s->auth_ldap_cafile->ptr);
if (LDAP_OPT_SUCCESS != ret) {
mod_authn_ldap_err(srv, __FILE__, __LINE__,
"ldap_set_option(LDAP_OPT_X_TLS_CACERTFILE)",
ret);
ldap_destroy(ld);
return NULL;
}
}
ret = ldap_start_tls_s(ld, NULL, NULL);
if (LDAP_OPT_SUCCESS != ret) {
mod_authn_ldap_err(srv,__FILE__,__LINE__,"ldap_start_tls_s()",ret);
ldap_destroy(ld);
return NULL;
}
}
return ld;
}
static int mod_authn_ldap_bind(server *srv, LDAP *ld, const char *dn, const char *pw) {
struct berval creds;
int ret;
if (NULL != pw) {
*((const char **)&creds.bv_val) = pw; /*(cast away const)*/
creds.bv_len = strlen(pw);
} else {
creds.bv_val = NULL;
creds.bv_len = 0;
}
/* RFE: add functionality: LDAP_SASL_EXTERNAL (or GSS-SPNEGO, etc.) */
ret = ldap_sasl_bind_s(ld,dn,LDAP_SASL_SIMPLE,&creds,NULL,NULL,NULL);
if (ret != LDAP_SUCCESS) {
mod_authn_ldap_err(srv, __FILE__, __LINE__, "ldap_sasl_bind_s()", ret);
}
return ret;
}
static int mod_authn_ldap_rebind_proc (LDAP *ld, LDAP_CONST char *url, ber_tag_t ldap_request, ber_int_t msgid, void *params) {
plugin_config *s = (plugin_config *)params;
UNUSED(url);
UNUSED(ldap_request);
UNUSED(msgid);
return !buffer_string_is_empty(s->auth_ldap_binddn)
? mod_authn_ldap_bind(s->srv, ld,
s->auth_ldap_binddn->ptr,
s->auth_ldap_bindpw->ptr)
: mod_authn_ldap_bind(s->srv, ld, NULL, NULL);
}
static LDAPMessage * mod_authn_ldap_search(server *srv, plugin_config *s, char *base, char *filter) {
LDAPMessage *lm = NULL;
char *attrs[] = { LDAP_NO_ATTRS, NULL };
int ret;
/*
* 1. connect anonymously (if not already connected)
* (ldap connection is kept open unless connection-level error occurs)
* 2. issue search using filter
*/
if (s->ldap != NULL) {
ret = ldap_search_ext_s(s->ldap, base, LDAP_SCOPE_SUBTREE, filter,
attrs, 0, NULL, NULL, NULL, 0, &lm);
if (LDAP_SUCCESS == ret) {
return lm;
} else if (LDAP_SERVER_DOWN != ret) {
/* try again (or initial request);
* ldap lib sometimes fails for the first call but reconnects */
ret = ldap_search_ext_s(s->ldap, base, LDAP_SCOPE_SUBTREE, filter,
attrs, 0, NULL, NULL, NULL, 0, &lm);
if (LDAP_SUCCESS == ret) {
return lm;
}
}
ldap_unbind_ext_s(s->ldap, NULL, NULL);
}
s->ldap = mod_authn_ldap_host_init(srv, s);
if (NULL == s->ldap) {
return NULL;
}
ldap_set_rebind_proc(s->ldap, mod_authn_ldap_rebind_proc, s);
ret = mod_authn_ldap_rebind_proc(s->ldap, NULL, 0, 0, s);
if (LDAP_SUCCESS != ret) {
ldap_destroy(s->ldap);
s->ldap = NULL;
return NULL;
}
ret = ldap_search_ext_s(s->ldap, base, LDAP_SCOPE_SUBTREE, filter,
attrs, 0, NULL, NULL, NULL, 0, &lm);
if (LDAP_SUCCESS != ret) {
log_error_write(srv, __FILE__, __LINE__, "sSss",
"ldap:", ldap_err2string(ret), "; filter:", filter);
ldap_unbind_ext_s(s->ldap, NULL, NULL);
s->ldap = NULL;
return NULL;
}
return lm;
}
static char * mod_authn_ldap_get_dn(server *srv, plugin_config *s, char *base, char *filter) {
LDAP *ld;
LDAPMessage *lm, *first;
char *dn;
int count;
lm = mod_authn_ldap_search(srv, s, base, filter);
if (NULL == lm) {
return NULL;
}
ld = s->ldap; /*(must be after mod_authn_ldap_search(); might reconnect)*/
count = ldap_count_entries(ld, lm);
if (0 == count) { /*(no entires found)*/
ldap_msgfree(lm);
return NULL;
} else if (count > 1) {
log_error_write(srv, __FILE__, __LINE__, "sss",
"ldap:", "more than one record returned. "
"you might have to refine the filter:", filter);
}
if (NULL == (first = ldap_first_entry(ld, lm))) {
mod_authn_ldap_opt_err(srv,__FILE__,__LINE__,"ldap_first_entry()",ld);
ldap_msgfree(lm);
return NULL;
}
if (NULL == (dn = ldap_get_dn(ld, first))) {
mod_authn_ldap_opt_err(srv,__FILE__,__LINE__,"ldap_get_dn()",ld);
ldap_msgfree(lm);
return NULL;
}
ldap_msgfree(lm);
return dn;
}
static handler_t mod_authn_ldap_memberOf(server *srv, plugin_config *s, const http_auth_require_t *require, const buffer *username, const char *userdn) {
array *groups = require->group;
buffer *filter = buffer_init();
handler_t rc = HANDLER_ERROR;
buffer_copy_string_len(filter, CONST_STR_LEN("("));
buffer_append_string_buffer(filter, s->auth_ldap_groupmember);
buffer_append_string_len(filter, CONST_STR_LEN("="));
if (buffer_is_equal_string(s->auth_ldap_groupmember,
CONST_STR_LEN("member"))) {
buffer_append_string(filter, userdn);
} else { /*(assume "memberUid"; consider validating in SETDEFAULTS_FUNC)*/
mod_authn_append_ldap_filter_escape(filter, username);
}
buffer_append_string_len(filter, CONST_STR_LEN(")"));
for (size_t i = 0; i < groups->used; ++i) {
char *base = groups->data[i]->key->ptr;
LDAPMessage *lm = mod_authn_ldap_search(srv, s, base, filter->ptr);
if (NULL != lm) {
int count = ldap_count_entries(s->ldap, lm);
ldap_msgfree(lm);
if (count > 0) {
rc = HANDLER_GO_ON;
break;
}
}
}
buffer_free(filter);
return rc;
}
static handler_t mod_authn_ldap_basic(server *srv, connection *con, void *p_d, const http_auth_require_t *require, const buffer *username, const char *pw) {
plugin_data *p = (plugin_data *)p_d;
LDAP *ld;
char *dn;
buffer *template;
handler_t rc;
mod_authn_ldap_patch_connection(srv, con, p);
p->anon_conf->srv = srv;
p->conf.srv = srv;
if (pw[0] == '\0' && !p->conf.auth_ldap_allow_empty_pw)
return HANDLER_ERROR;
template = p->conf.auth_ldap_filter;
if (buffer_string_is_empty(template)) {
return HANDLER_ERROR;
}
/* build filter to get DN for uid = username */
buffer_string_set_length(p->ldap_filter, 0);
if (*template->ptr == ',') {
/* special-case filter template beginning with ',' to be explicit DN */
buffer_append_string_len(p->ldap_filter, CONST_STR_LEN("uid="));
mod_authn_append_ldap_dn_escape(p->ldap_filter, username);
buffer_append_string_buffer(p->ldap_filter, template);
dn = p->ldap_filter->ptr;
} else {
for (char *b = template->ptr, *d; *b; b = d+1) {
if (NULL != (d = strchr(b, '?'))) {
buffer_append_string_len(p->ldap_filter, b, (size_t)(d - b));
mod_authn_append_ldap_filter_escape(p->ldap_filter, username);
} else {
d = template->ptr + buffer_string_length(template);
buffer_append_string_len(p->ldap_filter, b, (size_t)(d - b));
break;
}
}
/* ldap_search for DN (synchronous; blocking) */
dn = mod_authn_ldap_get_dn(srv, p->anon_conf,
p->conf.auth_ldap_basedn->ptr,
p->ldap_filter->ptr);
if (NULL == dn) {
return HANDLER_ERROR;
}
}
/* auth against LDAP server (synchronous; blocking) */
ld = mod_authn_ldap_host_init(srv, &p->conf);
if (NULL == ld) {
if (dn != p->ldap_filter->ptr) ldap_memfree(dn);
return HANDLER_ERROR;
}
/* Disable referral tracking. Target user should be in provided scope */
{
int ret = ldap_set_option(ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF);
if (LDAP_OPT_SUCCESS != ret) {
mod_authn_ldap_err(srv,__FILE__,__LINE__,"ldap_set_option()",ret);
ldap_destroy(ld);
if (dn != p->ldap_filter->ptr) ldap_memfree(dn);
return HANDLER_ERROR;
}
}
if (LDAP_SUCCESS != mod_authn_ldap_bind(srv, ld, dn, pw)) {
ldap_destroy(ld);
if (dn != p->ldap_filter->ptr) ldap_memfree(dn);
return HANDLER_ERROR;
}
ldap_unbind_ext_s(ld, NULL, NULL); /* disconnect */
if (http_auth_match_rules(require, username->ptr, NULL, NULL)) {
rc = HANDLER_GO_ON; /* access granted */
} else {
rc = HANDLER_ERROR;
if (require->group->used) {
/*(must not re-use p->ldap_filter, since it might be used for dn)*/
rc = mod_authn_ldap_memberOf(srv, &p->conf, require, username, dn);
}
}
if (dn != p->ldap_filter->ptr) ldap_memfree(dn);
return rc;
}
int mod_authn_ldap_plugin_init(plugin *p);
int mod_authn_ldap_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = buffer_init_string("authn_ldap");
p->init = mod_authn_ldap_init;
p->set_defaults = mod_authn_ldap_set_defaults;
p->cleanup = mod_authn_ldap_free;
p->data = NULL;
return 0;
}