new file mode 100644
--- /dev/null
+++ b/src/http/modules/ngx_http_userid_handler.c
@@ -0,0 +1,421 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+#define NGX_HTTP_USERID_OFF       0x0002
+#define NGX_HTTP_USERID_ON        0x0004
+#define NGX_HTTP_USERID_LOGONLY   0x0008
+#define NGX_HTTP_USERID_TIME      0x0010
+
+
+typedef struct {
+    ngx_flag_t  enable;
+
+    ngx_int_t   version;
+    ngx_int_t   service;
+
+    ngx_str_t   name;
+    ngx_str_t   domain;
+    ngx_str_t   path;
+    time_t      expires;
+
+    ngx_int_t   p3p;
+    ngx_str_t   p3p_string;
+} ngx_http_userid_conf_t;
+
+
+typedef struct {
+    uint32_t          uid_got[4];
+    uint32_t          uid_set[4];
+    struct timeval    tv;
+} ngx_http_userid_ctx_t;
+
+
+static ngx_int_t ngx_http_userid_get_uid(ngx_http_request_t *r,
+                                         ngx_http_userid_ctx_t *ctx,
+                                         ngx_http_userid_conf_t *conf);
+
+static u_char *ngx_http_userid_log_uid_got(ngx_http_request_t *r, u_char *buf,
+                                           uintptr_t data);
+static u_char *ngx_http_userid_log_uid_set(ngx_http_request_t *r, u_char *buf,
+                                           uintptr_t data);
+static u_char *ngx_http_userid_log_uid_time(ngx_http_request_t *r, u_char *buf,
+                                            uintptr_t data);
+
+static ngx_int_t ngx_http_userid_pre_conf(ngx_conf_t *cf);
+static void *ngx_http_userid_create_conf(ngx_conf_t *cf);
+static char *ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent,
+                                        void *child);
+static ngx_int_t ngx_http_userid_init(ngx_cycle_t *cycle);
+
+
+static ngx_conf_enum_t  ngx_http_userid_mask[] = {
+    { ngx_string("off"), NGX_HTTP_USERID_OFF },
+    { ngx_string("on"), NGX_HTTP_USERID_ON },
+    { ngx_string("logonly"), NGX_HTTP_USERID_LOGONLY },
+    { ngx_string("time"), NGX_HTTP_USERID_TIME },
+    { ngx_null_string, 0 }
+};
+
+
+static ngx_command_t  ngx_http_userid_commands[] = {
+
+    { ngx_string("userid"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
+      ngx_conf_set_bitmask_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_userid_conf_t, enable),
+      ngx_http_userid_mask},
+
+    { ngx_string("userid_service"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_userid_conf_t, service),
+      NULL},
+
+    { ngx_string("userid_name"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_str_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_userid_conf_t, name),
+      NULL},
+
+    { ngx_string("userid_domain"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_str_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_userid_conf_t, domain),
+      NULL},
+
+    { ngx_string("userid_path"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_str_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_userid_conf_t, path),
+      NULL},
+
+    { ngx_string("userid_expires"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_sec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_userid_conf_t, expires),
+      NULL},
+
+    ngx_null_command
+};
+
+
+ngx_http_module_t  ngx_http_userid_module_ctx = {
+    ngx_http_userid_pre_conf,              /* pre conf */
+
+    NULL,                                  /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    NULL,                                  /* create server configuration */
+    NULL,                                  /* merge server configuration */
+
+    ngx_http_userid_create_conf,           /* create location configration */
+    ngx_http_userid_merge_conf             /* merge location configration */
+};
+
+
+ngx_module_t  ngx_http_userid_module = {
+    NGX_MODULE,
+    &ngx_http_userid_module_ctx,           /* module context */
+    ngx_http_userid_commands,              /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    ngx_http_userid_init,                  /* init module */
+    NULL                                   /* init process */
+};
+
+
+static ngx_http_log_op_name_t ngx_http_userid_log_fmt_ops[] = {
+    { ngx_string("uid_got"), 0, ngx_http_userid_log_uid_got },
+    { ngx_string("uid_set"), 0, ngx_http_userid_log_uid_set },
+    { ngx_string("uid_time"), TIME_T_LEN + 4, ngx_http_userid_log_uid_time },
+    { ngx_null_string, 0, NULL }
+};
+
+
+static ngx_int_t ngx_http_userid_handler(ngx_http_request_t *r)
+{
+    ngx_int_t                rc;
+    struct timeval           tv;
+    ngx_http_userid_ctx_t   *ctx;
+    ngx_http_userid_conf_t  *conf;
+
+    conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_module);
+
+    if (conf->enable & NGX_HTTP_USERID_OFF) {
+        return NGX_OK;
+    }
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_userid_module);
+
+    if (ctx) {
+        return NGX_OK;
+    }
+
+    ngx_http_create_ctx(r, ctx, ngx_http_userid_module,
+                        sizeof(ngx_http_userid_ctx_t),
+                        NGX_HTTP_INTERNAL_SERVER_ERROR);
+
+    if (conf->enable & (NGX_HTTP_USERID_ON|NGX_HTTP_USERID_LOGONLY)) {
+        rc = ngx_http_userid_get_uid(r, ctx, conf);
+
+        if (rc != NGX_OK) {
+            return rc;
+        }
+    }
+
+    if (conf->enable & NGX_HTTP_USERID_TIME) {
+        ngx_gettimeofday(&ctx->tv);
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t ngx_http_userid_get_uid(ngx_http_request_t *r,
+                                         ngx_http_userid_ctx_t *ctx,
+                                         ngx_http_userid_conf_t *conf)
+{
+    u_char           *start, *last, *end;
+    uint32_t         *uid;
+    ngx_int_t         rc;
+    ngx_uint_t       *cookies, i;
+    ngx_str_t         src, dst;
+    ngx_table_elt_t  *headers;
+
+    headers = r->headers_in.headers.elts;
+    cookies = r->headers_in.cookies.elts;
+
+    for (i = 0; i < r->headers_in.cookies.nelts; i++) {
+        ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "cookie: %d:\"%s\"",
+                       cookies[i],
+                       headers[cookies[i]].value.data);
+
+        end = headers[cookies[i]].value.data + headers[cookies[i]].value.len;
+
+        for (start = headers[cookies[i]].value.data; start < end; /* void */) {
+
+            if (conf->name.len >= headers[cookies[i]].value.len
+                || ngx_strncmp(start, conf->name.data, conf->name.len) != 0)
+            {
+                start += conf->name.len;
+                while (start < end && *start++ != ';') { /* void */ }
+
+                for (/* void */; start < end && *start == ' '; start++) { /**/ }
+
+                continue;
+            }
+
+            for (start += conf->name.len; start < end && *start == ' '; start++)
+            {
+                /* void */
+            }
+
+            if (*start != '=') {
+                break;
+            }
+
+            for (start++; start < end && *start == ' '; start++) { /* void */ }
+
+            for (last = start; last < end && *last != ';'; last++) { /**/ }
+
+            if (last - start < 22) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "client sent too short userid cookie \"%s\"",
+                              headers[cookies[i]].value.data);
+                break;
+            }
+
+            /*
+             * we have to limit encoded string to 22 characters
+             * because there are already the millions cookies with a garbage
+             * instead of the correct base64 trail "=="
+             */
+
+            src.len = 22;
+            src.data = start;
+
+            rc = ngx_decode_base64(r->pool, &src, &dst);
+
+            if (rc == NGX_ABORT) {
+                return NGX_HTTP_INTERNAL_SERVER_ERROR;
+            }
+
+            if (rc == NGX_ERROR) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "client sent invalid userid cookie \"%s\"",
+                              headers[cookies[i]].value.data);
+                break;
+            }
+
+            uid = (uint32_t *) dst.data;
+            ctx->uid_got[0] = uid[0];
+            ctx->uid_got[1] = uid[1];
+            ctx->uid_got[2] = uid[2];
+            ctx->uid_got[3] = uid[3];
+
+            ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                           "uid: %08X%08X%08X%08X",
+                           uid[0], uid[1], uid[2], uid[3]);
+
+            return NGX_OK;
+        }
+    }
+
+    return NGX_OK;
+}
+
+
+static u_char *ngx_http_userid_log_uid_got(ngx_http_request_t *r, u_char *buf,
+                                           uintptr_t data)
+{
+    ngx_http_userid_ctx_t   *ctx;
+    ngx_http_userid_conf_t  *conf;
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_userid_module);
+
+    if (ctx == NULL || ctx->uid_got[3] == 0) {
+        if (buf == NULL) {
+            return (u_char *) 1;
+        }
+
+        *buf = '-';
+        return buf + 1;
+    }
+
+    conf = ngx_http_get_module_loc_conf(r, ngx_http_userid_module);
+
+    if (buf == NULL) {
+        return (u_char *) (conf->name.len + 1 + 32);
+    }
+
+    buf = ngx_cpymem(buf, conf->name.data, conf->name.len);
+
+    *buf++ = '=';
+
+    return buf + ngx_snprintf((char *) buf, 33, "%08X%08X%08X%08X",
+                              ctx->uid_got[0], ctx->uid_got[1],
+                              ctx->uid_got[2], ctx->uid_got[3]);
+}
+
+
+static u_char *ngx_http_userid_log_uid_set(ngx_http_request_t *r, u_char *buf,
+                                           uintptr_t data)
+{
+    if (buf == NULL) {
+        return (u_char *) 1;
+    }
+
+    *buf = '-';
+
+    return buf + 1;
+}
+
+
+static u_char *ngx_http_userid_log_uid_time(ngx_http_request_t *r, u_char *buf,
+                                            uintptr_t data)
+{
+    ngx_http_userid_ctx_t   *ctx;
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_userid_module);
+
+    if (ctx == NULL || ctx->tv.tv_sec == 0) {
+        *buf = '-';
+        return buf + 1;
+    }
+
+    return buf + ngx_snprintf((char *) buf, TIME_T_LEN + 5,
+                              "%ld.%03ld",
+                              ctx->tv.tv_sec, ctx->tv.tv_usec / 1000);
+}
+
+
+static ngx_int_t ngx_http_userid_pre_conf(ngx_conf_t *cf)
+{
+    ngx_http_log_op_name_t  *op;
+
+    for (op = ngx_http_userid_log_fmt_ops; op->name.len; op++) { /* void */ }
+    op->op = NULL;
+
+    op = ngx_http_log_fmt_ops;
+
+    for (op = ngx_http_log_fmt_ops; op->op; op++) {
+        if (op->name.len == 0) {
+            op = (ngx_http_log_op_name_t *) op->op;
+        }
+    }
+
+    op->op = (ngx_http_log_op_pt) ngx_http_userid_log_fmt_ops;
+
+    return NGX_OK;
+}
+
+
+static void *ngx_http_userid_create_conf(ngx_conf_t *cf)
+{   
+    ngx_http_userid_conf_t  *conf;
+
+    if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_userid_conf_t)))) {
+        return NGX_CONF_ERROR;
+    }
+
+    /* set by ngx_pcalloc():
+
+    conf->enable = 0;
+
+    conf->name.len = 0;
+    conf->name.date = NULL;
+    conf->domain.len = 0;
+    conf->domain.date = NULL;
+    conf->path.len = 0;
+    conf->path.date = NULL;
+
+    */
+
+
+    return conf;
+}   
+
+
+static char *ngx_http_userid_merge_conf(ngx_conf_t *cf, void *parent,
+                                        void *child)
+{
+    ngx_http_userid_conf_t *prev = parent;
+    ngx_http_userid_conf_t *conf = child;
+
+    ngx_conf_merge_bitmask_value(conf->enable, prev->enable,
+                                 (NGX_CONF_BITMASK_SET
+                                  |NGX_HTTP_USERID_OFF));
+
+    ngx_conf_merge_str_value(conf->name, prev->name, "uid");
+    ngx_conf_merge_str_value(conf->domain, prev->domain, ".");
+    ngx_conf_merge_str_value(conf->path, prev->path, "/");
+
+    return NGX_CONF_OK;
+}   
+
+
+static ngx_int_t ngx_http_userid_init(ngx_cycle_t *cycle)
+{
+    ngx_http_handler_pt        *h;
+    ngx_http_core_main_conf_t  *cmcf;
+
+    cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
+
+    h = ngx_push_array(&cmcf->phases[NGX_HTTP_MISC_PHASE].handlers);
+    if (h == NULL) {
+        return NGX_ERROR;
+    }
+
+    *h = ngx_http_userid_handler;
+
+    return NGX_OK;
+}