C++ (Cpp) ngx_http_variable_unknown_header_out примеры использования

Пример #1

Файл: ngx_http_variables.c Проект: 112358wise/ReadNginxSrc

ngx_http_variable_value_t *
ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name, ngx_uint_t key)
{
    ngx_http_variable_t        *v;
    ngx_http_variable_value_t  *vv;
    ngx_http_core_main_conf_t  *cmcf;

    cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
	//先根据哈希表查找变量是否存在，如果存在，则根据其保存在哈希表里面的index获取变量的内容。或者调用get_handler
    v = ngx_hash_find(&cmcf->variables_hash, key, name->data, name->len);
    if (v) {
        if (v->flags & NGX_HTTP_VAR_INDEXED) {
            return ngx_http_get_flushed_variable(r, v->index);
        } else {
            vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
            if (vv && v->get_handler(r, vv, v->data) == NGX_OK) {
                return vv;
            }
            return NULL;
        }
    }
	//如果不存在variables里面，则看一下是否是预定义的变量。
    vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
    if (vv == NULL) {
        return NULL;
    }
    if (ngx_strncmp(name->data, "http_", 5) == 0) {
        if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name) == NGX_OK){
            return vv;
        }
        return NULL;
    }
    if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {
        if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)  == NGX_OK)  {
            return vv;
        }
        return NULL;
    }
    if (ngx_strncmp(name->data, "upstream_http_", 14) == 0) {
        if (ngx_http_upstream_header_variable(r, vv, (uintptr_t) name) == NGX_OK) {
            return vv;
        }
        return NULL;
    }
    if (ngx_strncmp(name->data, "cookie_", 7) == 0) {
        if (ngx_http_variable_cookie(r, vv, (uintptr_t) name) == NGX_OK) {
            return vv;
        }
        return NULL;
    }
    if (ngx_strncmp(name->data, "arg_", 4) == 0) {
        if (ngx_http_variable_argument(r, vv, (uintptr_t) name) == NGX_OK) {
            return vv;
        }
        return NULL;
    }
    vv->not_found = 1;
    return vv;
}

Пример #2

Файл: ngx_http_variables.c Проект: vys/nginx

ngx_http_variable_value_t *
ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name, ngx_uint_t key,
    ngx_uint_t nowarn)
{
    ngx_http_variable_t        *v;
    ngx_http_variable_value_t  *vv;
    ngx_http_core_main_conf_t  *cmcf;

    cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);

    v = ngx_hash_find(&cmcf->variables_hash, key, name->data, name->len);

    if (v) {
        if (v->flags & NGX_HTTP_VAR_INDEXED) {
            return ngx_http_get_indexed_variable(r, v->index);

        } else {

            vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));

            if (vv && v->get_handler(r, vv, v->data) == NGX_OK) {
                return vv;
            }

            return NULL;
        }
    }

    vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
    if (vv == NULL) {
        return NULL;
    }

    if (ngx_strncmp(name->data, "http_", 5) == 0) {

        if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name)
            == NGX_OK)
        {
            return vv;
        }

        return NULL;
    }

    if (ngx_strncmp(name->data, "sent_http_", 10) == 0) {

        if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name)
            == NGX_OK)
        {
            return vv;
        }

        return NULL;
    }

    if (ngx_strncmp(name->data, "upstream_http_", 10) == 0) {

        if (ngx_http_upstream_header_variable(r, vv, (uintptr_t) name)
            == NGX_OK)
        {
            return vv;
        }

        return NULL;
    }

    if (ngx_strncmp(name->data, "cookie_", 7) == 0) {

        if (ngx_http_variable_cookie(r, vv, (uintptr_t) name) == NGX_OK) {
            return vv;
        }

        return NULL;
    }

    if (ngx_strncmp(name->data, "arg_", 4) == 0) {

        if (ngx_http_variable_argument(r, vv, (uintptr_t) name) == NGX_OK) {
            return vv;
        }

        return NULL;
    }

    vv->not_found = 1;

    if (nowarn == 0) {
        ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
                      "unknown \"%V\" variable", name);
    }

    return vv;
}