static ngx_int_t
ngx_http_internal_redirect_handler(ngx_http_request_t *r)
{
u_char *p;
ngx_uint_t i;
ngx_str_t uri, args;
ngx_http_script_code_pt code;
ngx_http_script_engine_t e;
ngx_http_variable_value_t stack[10];
ngx_http_internal_redirect_entry_t *redirects;
ngx_http_internal_redirect_main_conf_t *imcf;
ngx_http_internal_redirect_loc_conf_t *ilcf;
ngx_http_core_main_conf_t *cmcf;
ngx_http_phase_handler_t *ph, *cur_ph, *last_ph, tmp;
imcf = ngx_http_get_module_main_conf(r, ngx_http_internal_redirect_module);
if (!imcf->postponed) {
imcf->postponed = 1;
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
ph = cmcf->phase_engine.handlers;
cur_ph = &ph[r->phase_handler];
last_ph = &ph[cur_ph->next - 1];
if (cur_ph < last_ph) {
tmp = *cur_ph;
ngx_memmove(cur_ph, cur_ph + 1,
(last_ph - cur_ph) * sizeof(ngx_http_phase_handler_t));
*last_ph = tmp;
r->phase_handler--; /* redo the current ph */
return NGX_DECLINED;
}
}
ilcf = ngx_http_get_module_loc_conf(r, ngx_http_internal_redirect_module);
if (ilcf->redirects == NULL) {
return NGX_DECLINED;
}
redirects = ilcf->redirects->elts;
for (i = 0; i < ilcf->redirects->nelts; i++) {
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
ngx_memzero(&stack, sizeof(stack));
e.sp = stack;
e.ip = redirects[i].codes->elts;
e.request = r;
e.quote = 1;
e.log = 1;
e.status = NGX_DECLINED;
while (*(uintptr_t *) e.ip) {
code = *(ngx_http_script_code_pt *) e.ip;
code(&e);
}
e.sp--;
if (e.sp->len && (e.sp->len != 1 || e.sp->data[0] != '0')) {
break;
}
}
if (i == ilcf->redirects->nelts) {
return NGX_DECLINED;
}
if (redirects[i].code) {
return redirects[i].code;
}
if (redirects[i].lengths) {
if (ngx_http_script_run(r, &uri, redirects[i].lengths->elts, 0,
redirects->values->elts)
== NULL)
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
} else {
uri = redirects[i].name;
}
if (uri.data[0] == '@') {
(void) ngx_http_named_location(r, &uri);
} else {
if (uri.data[0] != '/') {
p = ngx_pcalloc(r->pool, uri.len + 1);
if (p == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
uri.len++;
*p = '/';
ngx_memcpy(p + 1, uri.data, uri.len);
uri.data = p;
}
ngx_http_split_args(r, &uri, &args);
(void) ngx_http_internal_redirect(r, &uri, &args);
}
ngx_http_finalize_request(r, NGX_DONE);
return NGX_DONE;
}
static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
ngx_int_t overwrite;
ngx_str_t uri, args;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
overwrite = err_page->overwrite;
if (overwrite && overwrite != NGX_HTTP_OK) {
r->expect_tested = 1;
}
if (overwrite >= 0) {
r->err_status = overwrite;
}
if (ngx_http_complex_value(r, &err_page->value, &uri) != NGX_OK) {
return NGX_ERROR;
}
if (uri.len && uri.data[0] == '/') {
if (err_page->value.lengths) {
ngx_http_split_args(r, &uri, &args);
} else {
args = err_page->args;
}
if (r->method != NGX_HTTP_HEAD) {
r->method = NGX_HTTP_GET;
r->method_name = ngx_http_get_name;
}
return ngx_http_internal_redirect(r, &uri, &args);
}
if (uri.len && uri.data[0] == '@') {
return ngx_http_named_location(r, &uri);
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
if (overwrite != NGX_HTTP_MOVED_PERMANENTLY
&& overwrite != NGX_HTTP_MOVED_TEMPORARILY
&& overwrite != NGX_HTTP_SEE_OTHER
&& overwrite != NGX_HTTP_TEMPORARY_REDIRECT)
{
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
}
location->hash = 1;
ngx_str_set(&location->key, "Location");
location->value = uri;
ngx_http_clear_location(r);
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, r->err_status
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_OFF_3XX);
}
static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
ngx_int_t overwrite;
ngx_str_t uri, args;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
overwrite = err_page->overwrite;
if (overwrite && overwrite != NGX_HTTP_OK) {
r->expect_tested = 1;
}
r->err_status = overwrite;
r->zero_in_uri = 0;
if (ngx_http_complex_value(r, &err_page->value, &uri) != NGX_OK) {
return NGX_ERROR;
}
if (uri.data[0] == '/') {
if (err_page->value.lengths) {
ngx_http_split_args(r, &uri, &args);
} else {
args = err_page->args;
}
if (r->method != NGX_HTTP_HEAD) {
r->method = NGX_HTTP_GET;
r->method_name = ngx_http_get_name;
}
return ngx_http_internal_redirect(r, &uri, &args);
}
if (uri.data[0] == '@') {
return ngx_http_named_location(r, &uri);
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
location->hash = 1;
location->key.len = sizeof("Location") - 1;
location->key.data = (u_char *) "Location";
location->value = uri;
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, NGX_HTTP_MOVED_TEMPORARILY
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_LEVEL_200);
}
