Hi~ ngx_http_ipdb_module/ngx_http_ipdb_module.c:146:7: error: 'ngx_http_null_variable' undeclared here (not in a function)

ngx_http_null_variable is not defined which lead to error in compiling it into nginx

提示错误
./ngx_http_ipdb_module-master//ipdb/ipdb.c In file included from ./ngx_http_ipdb_module-master//ipdb/ipdb.c:9: ./ngx_http_ipdb_module-master//ipdb/ipdb.h:60:44: error: unknown type name 'u_char' int ipdb_search(ipdb_reader *reader, const u_char *ip, int bit_count, int *node); ^~~~~~ ./ngx_http_ipdb_module-master//ipdb/ipdb.c:184:44: error: unknown type name 'u_char' int ipdb_search(ipdb_reader *reader, const u_char *ip, int bit_count, int *node) { ^~~~~~ ./ngx_http_ipdb_module-master//ipdb/ipdb.c: In function 'ipdb_find0': ./ngx_http_ipdb_module-master//ipdb/ipdb.c:219:42: error: unknown type name 'u_char' err = ipdb_search(reader, (const u_char *) &addr4.s_addr, 32, &node); ^~~~~~ ./ngx_http_ipdb_module-master//ipdb/ipdb.c:227:42: error: unknown type name 'u_char' err = ipdb_search(reader, (const u_char *) &addr6.s6_addr, 128, &node); ^~~~~~ make[1]: *** [objs/Makefile:1212: objs/addon/ipdb/ipdb.o] Error 1 make[1]: Leaving directory '/tmp/nginx-1.17.4' make: *** [Makefile:8: build] Error 2

在 ipdb.h里加上 typedef unsigned char u_char; 才能编译通过

ipdb_proxy是什么？怎么用？

ipdb

syntax: ipdb file;

default: -

context: http

Specifies a database.

ipdb 参数只能加载一个文件, 要么是 ipv4.ipdb 或 ipv6.ipdb

现在大部分都多支持双栈, 如何同时加载 ipv4 和 ipv6 文件, 以便 v4 v6 地址都支持

when try to build with nginx 1.23.1,it fails

here are the error log:

        -o objs/ngx_http_ipdb_module_modules.o \
        objs/ngx_http_ipdb_module_modules.c
/usr/src/ngx_http_ipdb_module/ngx_http_ipdb_module.c: In function 'ngx_http_ipdb_variable':
/usr/src/ngx_http_ipdb_module/ngx_http_ipdb_module.c:620:14: error: assignment to 'ngx_array_t *' from incompatible pointer type 'ngx_table_elt_t **' {aka 'struct ngx_table_elt_s **'} [-Werror=incompatible-pointer-types]
  620 |         xfwd = &r->headers_in.x_forwarded_for;
      |              ^
/usr/src/ngx_http_ipdb_module/ngx_http_ipdb_module.c:622:58: error: passing argument 3 of 'ngx_http_get_forwarded_addr' from incompatible pointer type [-Werror=incompatible-pointer-types]
  622 |             (void) ngx_http_get_forwarded_addr(r, &addr, xfwd, NULL,
      |                                                          ^~~~
      |                                                          |
      |                                                          ngx_array_t *
In file included from src/http/ngx_http.h:36,
                 from /usr/src/ngx_http_ipdb_module/ngx_http_ipdb_module.c:7:
src/http/ngx_http_core_module.h:532:22: note: expected 'ngx_table_elt_t *' {aka 'struct ngx_table_elt_s *'} but argument is of type 'ngx_array_t *'
  532 |     ngx_table_elt_t *headers, ngx_str_t *value, ngx_array_t *proxies,
      |     ~~~~~~~~~~~~~~~~~^~~~~~~

centos 7
kernel 5
gcc 8
nginx 1.17.6

/www/server/nginx/src/ngx_http_ipdb_module/ipdb/ipdb.c: In function ‘ipdb_reader_new’:
/www/server/nginx/src/ngx_http_ipdb_module/ipdb/ipdb.c:106:5: error: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Werror=unused-result]
fread(&meta_length, sizeof(meta_length), 1, fd);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/www/server/nginx/src/ngx_http_ipdb_module/ipdb/ipdb.c:111:5: error: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Werror=unused-result]
fread(meta_json, sizeof(char), meta_length, fd);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/www/server/nginx/src/ngx_http_ipdb_module/ipdb/ipdb.c:124:5: error: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Werror=unused-result]
fread(rd->data, sizeof(unsigned char), (size_t) data_len, fd);

测试用例：
58.250.137.36
" 联通"
59.65.210.0
"教育网"

This module is compiled on Debian system, there is no error, but it can not generate related dynamic module. There is no error in static compilation, but error is reported when loading related instructions in configuration file

nginx: [emerg] unknown directive "ipdb" in /etc/nginx/nginx.conf:26
nginx: configuration file /etc/nginx/nginx.conf test failed

http {
ipdb /etc/nginx/ipip.ipdb;
ipdb_language EN;
ipdb_proxy 127.0.0.1;
ipdb_proxy_recursive on;

例如X-Forwarded-For字段如下
X-Forwarded-For: client, proxy1, proxy2
配置：ipdb_proxy_recursive on;
通过这个模块会得到proxy2的IP信息，而不是client的ip信息
@vislee

如题，下的最新的2022.12.21 qqwry.ipdb文件大了很多，有15M多了，现在用这个插件识别不出来了，大佬能更新一下么

使用的openresty 1.5.18，编译成功。

使用示例配置:

http {
    # ipip
    ipdb /usr/local/nginx/conf/mydata4vipweek2.ipdb;
    ipdb_language EN;
    ipdb_proxy 127.0.0.1;
    ipdb_proxy_recursive on;

    server {
        location /ip {
            return 200 "country_name:$ipdb_country_name, raw_info:$ipdb_raw";
        }
    }
}

测试命令：
curl -H 'X-Forwarded-For: 1.85.4.99' -v 127.0.0.1/ip

得到的结果是空：

country_name:, raw_info:*

配置如下：
HTTP段：

ipdb /root/ipipfree.ipdb;
ipdb_language EN;
ipdb_proxy 127.0.0.1;
    ipdb_proxy_recursive on;

Server段内容为：

add_header x-info $ipdb_country_name;
add_header x-test $ipdb_region_name;

发现response中不返回x-info（$ipdb_country_name），结果为空，重启过nginx，同时nginx中无错误日志，请问是怎么回事？