static ngx_int_t
ngx_http_variable_remote_user(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data)
{
ngx_int_t rc;
rc = ngx_http_auth_basic_user(r);
if (rc == NGX_DECLINED) {
v->not_found = 1;
return NGX_OK;
}
if (rc == NGX_ERROR) {
return NGX_ERROR;
}
v->len = r->headers_in.user.len;
v->valid = 1;
v->no_cacheable = 0;
v->not_found = 0;
v->data = r->headers_in.user.data;
return NGX_OK;
}
static ngx_int_t
ngx_http_auth_mysql_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_auth_mysql_ctx_t *ctx;
ngx_http_auth_mysql_loc_conf_t *alcf;
alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_mysql_module);
if (alcf->realm.len == 0) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_auth_mysql_module);
if (ctx) {
return ngx_http_auth_mysql_authenticate(r, ctx, &ctx->passwd, alcf);
}
/* Decode http auth user and passwd, leaving values on the request */
rc = ngx_http_auth_basic_user(r);
if (rc == NGX_DECLINED) {
return ngx_http_auth_mysql_set_realm(r, &alcf->realm);
}
if (rc == NGX_ERROR) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
/* Check user & password using MySQL */
return ngx_http_auth_mysql_authenticate(r, ctx, &ctx->passwd, alcf);
}
static ngx_int_t ngx_http_auth_ldap_handler(ngx_http_request_t *r) {
int rc;
ngx_http_auth_ldap_ctx_t *ctx;
ngx_http_auth_ldap_loc_conf_t *alcf;
alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_ldap_module);
if (alcf->realm.len == 0) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_auth_ldap_module);
if (ctx) {
return ngx_http_auth_ldap_authenticate(r, ctx, &ctx->passwd, alcf);
}
rc = ngx_http_auth_basic_user(r);
if (rc == NGX_DECLINED) {
return ngx_http_auth_ldap_set_realm(r, &alcf->realm);
}
if (rc == NGX_ERROR) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
return ngx_http_auth_ldap_authenticate(r, ctx, &ctx->passwd, alcf);
}
static ngx_int_t
ngx_http_auth_basic_handler(ngx_http_request_t *r)
{
off_t offset;
ssize_t n;
ngx_fd_t fd;
ngx_int_t rc;
ngx_err_t err;
ngx_str_t pwd, realm, user_file;
ngx_uint_t i, level, login, left, passwd;
ngx_file_t file;
ngx_http_auth_basic_ctx_t *ctx;
ngx_http_auth_basic_loc_conf_t *alcf;
u_char buf[NGX_HTTP_AUTH_BUF_SIZE];
enum {
sw_login,
sw_passwd,
sw_skip
} state;
alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_basic_module);
if (alcf->realm == NULL || alcf->user_file.value.data == NULL) {
return NGX_DECLINED;
}
if (ngx_http_complex_value(r, alcf->realm, &realm) != NGX_OK) {
return NGX_ERROR;
}
if (realm.len == 3 && ngx_strncmp(realm.data, "off", 3) == 0) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_auth_basic_module);
if (ctx) {
return ngx_http_auth_basic_crypt_handler(r, ctx, &ctx->passwd,
&realm);
}
rc = ngx_http_auth_basic_user(r);
if (rc == NGX_DECLINED) {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"no user/password was provided for basic authentication");
return ngx_http_auth_basic_set_realm(r, &realm);
}
if (rc == NGX_ERROR) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_http_complex_value(r, &alcf->user_file, &user_file) != NGX_OK) {
return NGX_ERROR;
}
fd = ngx_open_file(user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
err = ngx_errno;
if (err == NGX_ENOENT) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
} else {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_error(level, r->connection->log, err,
ngx_open_file_n " \"%s\" failed", user_file.data);
return rc;
}
ngx_memzero(&file, sizeof(ngx_file_t));
file.fd = fd;
file.name = user_file;
file.log = r->connection->log;
state = sw_login;
passwd = 0;
login = 0;
left = 0;
offset = 0;
for ( ;; ) {
i = left;
n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left,
offset);
if (n == NGX_ERROR) {
ngx_http_auth_basic_close(&file);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (n == 0) {
break;
}
for (i = left; i < left + n; i++) {
switch (state) {
case sw_login:
if (login == 0) {
if (buf[i] == '#' || buf[i] == CR) {
state = sw_skip;
break;
}
if (buf[i] == LF) {
break;
}
}
if (buf[i] != r->headers_in.user.data[login]) {
state = sw_skip;
break;
}
if (login == r->headers_in.user.len) {
state = sw_passwd;
passwd = i + 1;
}
login++;
break;
case sw_passwd:
if (buf[i] == LF || buf[i] == CR || buf[i] == ':') {
buf[i] = '\0';
ngx_http_auth_basic_close(&file);
pwd.len = i - passwd;
pwd.data = &buf[passwd];
return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd,
&realm);
}
break;
case sw_skip:
if (buf[i] == LF) {
state = sw_login;
login = 0;
}
break;
}
}
if (state == sw_passwd) {
left = left + n - passwd;
ngx_memmove(buf, &buf[passwd], left);
passwd = 0;
} else {
left = 0;
}
offset += n;
}
ngx_http_auth_basic_close(&file);
if (state == sw_passwd) {
pwd.len = i - passwd;
pwd.data = ngx_pnalloc(r->pool, pwd.len + 1);
if (pwd.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_cpystrn(pwd.data, &buf[passwd], pwd.len + 1);
return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd, &realm);
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"user \"%V\" was not found in \"%V\"",
&r->headers_in.user, &user_file);
return ngx_http_auth_basic_set_realm(r, &realm);
}
static ngx_int_t
ngx_http_auth_radius_handler( ngx_http_request_t *r )
{
ngx_http_auth_radius_ctx_t* ctx;
ctx = ngx_http_get_module_ctx( r, ngx_http_auth_radius_module );
ngx_http_auth_radius_main_conf_t* conf = ngx_http_get_module_loc_conf( r, ngx_http_auth_radius_module );
if ( conf->realm.data == NULL || conf->realm.len == 0 )
return NGX_OK;
ngx_int_t rc = ngx_http_auth_basic_user( r );
if ( rc == NGX_ERROR )
return NGX_HTTP_INTERNAL_SERVER_ERROR;
if ( rc == NGX_DECLINED || ( ctx && ctx->done && ctx->accepted == 0 ) ) {
r->headers_out.www_authenticate = ngx_list_push( &r->headers_out.headers );
if ( r->headers_out.www_authenticate == NULL ) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->headers_out.www_authenticate->hash = 1;
r->headers_out.www_authenticate->key.len = sizeof( "WWW-Authenticate" ) - 1;
r->headers_out.www_authenticate->key.data = (u_char *) "WWW-Authenticate";
ngx_int_t realm_len = sizeof( "Basic realm=\"\"" ) + conf->realm.len;
ngx_buf_t* b = ngx_create_temp_buf( r->pool, realm_len );
ngx_snprintf( b->pos, realm_len, "Basic realm=\"%V\"", &conf->realm );
r->headers_out.www_authenticate->value.data = b->pos;
r->headers_out.www_authenticate->value.len = realm_len - 1;
return NGX_HTTP_UNAUTHORIZED;
}
if ( ctx == NULL ) {
ctx = ngx_pcalloc( r->pool, sizeof( *ctx ) );
if ( ctx == NULL ) {
// TODO log
return NGX_ERROR;
}
ctx->attempts = conf->radius_attempts;
ctx->done = 0;
ctx->accepted = 0;
ngx_http_set_ctx( r, ctx, ngx_http_auth_radius_module );
r->read_event_handler = http_req_read_handler;
ngx_str_t args;
ngx_str_t key;
calc_req_digest( r, &conf->secret, ctx->digest );
key.data = ctx->digest;
key.len = sizeof( ctx->digest );
args.len = sizeof( "o=get&k=" ) - 1 + key.len; // TODO
args.data = ngx_palloc( r->pool, args.len );
u_char* e = ngx_snprintf( args.data, args.len, "o=get&k=%V", &key );
args.len = e - args.data;
rc = ngx_http_auth_radius_init_subrequest( r, &conf->radius_cache, &args, ngx_http_auth_radius_subrequest_mcget_done );
return NGX_AGAIN;
}
if ( ctx->done == 0 ) {
return NGX_AGAIN;
}
ngx_log_error( NGX_LOG_ERR, r->connection->log, 0, "GRANTED 0x%xl", r );
return NGX_OK;
}
/*
* Module handler
*
*/
static ngx_int_t ngx_http_authnz_pam_handler(ngx_http_request_t *r)
{
ngx_int_t steps = 0;
ngx_int_t rc;
ngx_http_authnz_pam_loc_conf_t *loc_conf;
loc_conf = ngx_http_get_module_loc_conf(r, ngx_http_authnz_pam_module);
if (loc_conf->active == 0) {
return NGX_DECLINED;
}
if (loc_conf->pam_service_name.len == 0) {
pam_authnz_log_error("pam_authnz: Empty PAM service name");
return NGX_ERROR;
}
pam_authnz_debug1("pam_authnz: PAM service name is set to: %s", loc_conf->pam_service_name.data);
if (r->headers_in.user.len == 0) {
if (loc_conf->basic_auth == 1) {
pam_authnz_debug0("pam_authnz: Basic auth");
rc = ngx_http_auth_basic_user(r);
if (rc == NGX_DECLINED) {
return ngx_http_authnz_pam_return_www_auth(r, &loc_conf->name);
}
if (rc == NGX_ERROR) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
steps = _PAM_STEP_AUTH;
}
else {
pam_authnz_debug0("pam_authnz: Nothing to do. Everything is lost.");
return NGX_DECLINED;
}
}
else {
pam_authnz_debug1("pam_authnz: User set to: %s", r->headers_in.user.data);
}
u_char *name_buf, *pass_buf, *p;
size_t name_len, pass_len;
for (name_len = 0; name_len < r->headers_in.user.len; name_len++) {
if (r->headers_in.user.data[name_len] == ':') {
break;
}
}
for (pass_len = 0; ; pass_len++) {
if (r->headers_in.user.data[name_len + pass_len] == '\0') {
break;
}
}
name_buf = ngx_palloc(r->pool, name_len+1);
if (name_buf == NULL) {
return NGX_ERROR;
}
p = ngx_cpymem(name_buf, r->headers_in.user.data , name_len);
*p = '\0';
pass_buf = ngx_palloc(r->pool, pass_len+1 );
if (pass_buf == NULL) {
return NGX_ERROR;
}
p = ngx_cpymem(pass_buf, &(r->headers_in.user.data[name_len+1]), pass_len);
*p = '\0';
steps = steps + _PAM_STEP_ACCOUNT;
rc = ngx_http_pam_authenticate(r, steps, loc_conf, (const char *) name_buf, (const char *) pass_buf);
/* Authentication or authorization failed - clear remote_user */
if (rc != NGX_OK) {
r->headers_in.user.data = (u_char *) "";
r->headers_in.user.len = 0;
}
return rc;
};
