# HG changeset patch
# User Jon Nalley <code@bluebot.org>
# Date 1432848566 18000
# Thu May 28 16:29:26 2015 -0500
# Node ID 4e59c130d468ee6757b5ba97f912b6c72c3f7c0d
# Parent 0a096e2e51fcbb536007d94bf3edfc308e214f56
Adds $orig_remote_addr in realip module.

When the realip module sets $remote_addr, the connecting IP is
no longer available for logging etc. This change preserves the
connecting IP as $orig_remote_addr.

diff -r 0a096e2e51fc -r 4e59c130d468 src/http/modules/ngx_http_realip_module.c
--- a/src/http/modules/ngx_http_realip_module.c Tue May 26 16:49:51 2015 +0300
+++ b/src/http/modules/ngx_http_realip_module.c Thu May 28 16:29:26 2015 -0500
@@ -33,6 +33,10 @@
} ngx_http_realip_ctx_t;


+static ngx_int_t
+ ngx_http_realip_orig_remote_addr_variable(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data);
+static ngx_int_t ngx_http_realip_add_variables(ngx_conf_t *cf);
static ngx_int_t ngx_http_realip_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_realip_set_addr(ngx_http_request_t *r,
ngx_addr_t *addr);
@@ -75,7 +79,7 @@


static ngx_http_module_t ngx_http_realip_module_ctx = {
- NULL, /* preconfiguration */
+ ngx_http_realip_add_variables, /* preconfiguration */
ngx_http_realip_init, /* postconfiguration */

NULL, /* create main configuration */
@@ -105,6 +109,15 @@
};


+static ngx_http_variable_t ngx_http_realip_vars[] = {
+
+ { ngx_string("orig_remote_addr"), NULL,
+ ngx_http_realip_orig_remote_addr_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
+
+ { ngx_null_string, NULL, NULL, 0, 0, 0 }
+};
+
+
static ngx_int_t
ngx_http_realip_handler(ngx_http_request_t *r)
{
@@ -369,6 +382,48 @@
}


+static ngx_int_t
+ngx_http_realip_orig_remote_addr_variable(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data)
+{
+ ngx_http_realip_ctx_t *ctx;
+
+ ctx = ngx_http_get_module_ctx(r, ngx_http_realip_module);
+
+ if (ctx == NULL) {
+ v->not_found = 1;
+ return NGX_OK;
+ }
+
+ v->len = ctx->addr_text.len;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+ v->data = ctx->addr_text.data;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_realip_add_variables(ngx_conf_t *cf)
+{
+ ngx_http_variable_t *var, *v;
+
+ for (v = ngx_http_realip_vars; v->name.len; v++) {
+ var = ngx_http_add_variable(cf, &v->name, v->flags);
+ if (var == NULL) {
+ return NGX_ERROR;
+ }
+
+ var->get_handler = v->get_handler;
+ var->data = v->data;
+ }
+
+ return NGX_OK;
+}
+
+
static void *
ngx_http_realip_create_loc_conf(ngx_conf_t *cf)
{

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