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46
Chaos_Calmer.Makefile
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include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=xmurp-ua
PKG_RELEASE:=33
include $(INCLUDE_DIR)/package.mk
define KernelPackage/xmurp-ua
SUBMENU:=Other modules
TITLE:=XMURP UA
FILES:=$(PKG_BUILD_DIR)/xmurp-ua.ko
AUTOLOAD:=$(call AutoLoad,99,xmurp-ua,1)
endef
define KernelPackage/xmurp-ua/description
Modify UA in HTTP for anti-detection of router in XMU.
endef
EXTRA_KCONFIG:= \
CONFIG_XMURP_UA=m
EXTRA_CFLAGS:= \
$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
-DVERSION=$(PKG_RELEASE)
MAKE_OPTS:= \
ARCH="$(LINUX_KARCH)" \
CROSS_COMPILE="$(TARGET_CROSS)" \
SUBDIRS="$(PKG_BUILD_DIR)" \
EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
$(EXTRA_KCONFIG)
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Build/Compile
$(MAKE) -C "$(LINUX_DIR)" \
$(MAKE_OPTS) \
modules
endef
$(eval $(call KernelPackage,xmurp-ua))

674
LICENSE
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@ -1,674 +0,0 @@
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This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

34
Makefile
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@ -1,34 +0,0 @@
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=xmurp-ua
PKG_RELEASE:=34
include $(INCLUDE_DIR)/package.mk
define KernelPackage/xmurp-ua
SUBMENU:=Other modules
TITLE:=xmurp-ua
FILES:=$(PKG_BUILD_DIR)/xmurp-ua.ko
AUTOLOAD:=$(call AutoLoad,99,xmurp-ua)
KCONFIG:=
endef
EXTRA_KCONFIG:= \
CONFIG_XMURP_UA=m
EXTRA_CFLAGS:= \
$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
-DVERSION=$(PKG_RELEASE)
MAKE_OPTS:=$(KERNEL_MAKE_FLAGS) \
M="$(PKG_BUILD_DIR)" \
EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
$(EXTRA_KCONFIG)
define Build/Compile
$(MAKE) -C "$(LINUX_DIR)" $(MAKE_OPTS) modules
endef
$(eval $(call KernelPackage,xmurp-ua))

38
README.md
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@ -1,38 +0,0 @@
**不允许商业使用。** 希望某些“路由器团队”赚钱的时候摸一下自己的良心。
有新的测试版本可用（在 dev 分支）。这个版本将不会正式发布，而是作为新的工具的一部分发布，敬请期待。
另外，希望 dnsdizhi.com 的站长看到这里后把复制粘贴我的那篇文章删掉，谢谢。如果有人知道如何可以联系到站长也可以告诉我。那篇文章的地址在[这里](https://www.dnsdizhi.com/tag/xmurp-ua)。那篇是完全复制粘贴的我的文章（的一个历史版本），但却是百度结果的第一篇文章（似乎也是唯一一篇）。我的文章在[这里](https://catalog.chn.moe/%E6%95%99%E7%A8%8B/OpenWrt/%E5%9C%A8%E5%8E%A6%E5%A4%A7%E5%AE%BF%E8%88%8D%E5%AE%89%E8%A3%85%E8%B7%AF%E7%94%B1%E5%99%A8)。
点击[此处](https://catalog.chn.moe/%E8%87%AA%E6%88%91%E4%BB%8B%E7%BB%8D/%E6%8A%95%E5%96%82%E5%9C%B0%E5%9D%80/)捐赠，欢迎投喂～
---
喵喵喵，这里是一个修改 UA 的小模块。细致地讲，就是用在 OpenWrt 上修改发给外网 80 端口 GET 和 POST 请求的 UA 字段为 `XMURP/1.0` 再加很多个空格的内核模块，用来防止学校检测到使用代理（接路由器）。当然，你改一下 `Makefile`，用到其它 Linux 系统上也是可以的。如果你不了解 OpenWrt 的食用方法或者还是不明白这个插件是用来干什么的的话，可以看[这里](https://catalog.chn.moe/教程/OpenWrt/在厦大宿舍安装路由器)。如果你不知道怎么编译，可以把 SDK 发给我我给你编译。如果要自己编译，看[这里](compile.md)。如果你使用官方稳定版，我把编译好的丢到[这里](https://github.com/CHN-beta/rkp-build)了，自取。
到现在为止，在 `4.x` 和 `3.x` 的内核上好像用得都没问题。
27 及以前的版本会导致路由器随机卡死，注意更新到最新版本。
这个模块因为设计上的缺陷，不能修改到所有的 UA，只能修改绝大多数的，对于厦门大学的情况，够用了。dev 分支已经解决了这个问题，完美。
如果有一些包不希望被改 UA，只要在防火墙规则里将 MARK 的第九位设置为 1 就可以了。例如：
```
iptables -t mangle -A PREROUTING -p tcp -m tcp --dport 80 -m mac --mac-source f8:94:c2:85:e8:14 -j MARK --set-xmark 0x100/0x100
```
在之前的版本中，使用的是 `0x1/0x1` 位，但是与 luci-app-shadowsocks 冲突，所以改到了 `0x100/0x100`。
另外，不要在 luci 中启用 flow offloading（流量分载，即 nat 加速），否则这个模块会失效。可以通过下面的命令（二选一，不需要两句都写）来对不需要这个模块的流量启用。
```
iptables -t filter -I FORWARD -p tcp ! --dport 80 ! --sport 80 -m conntrack --ctstate RELATED,ESTABLISHED -j FLOWOFFLOAD --hw
iptables -t filter -I FORWARD -p tcp ! --dport 80 ! --sport 80 -m conntrack --ctstate RELATED,ESTABLISHED -j FLOWOFFLOAD
```
两句的区别的话，大概是前者用硬件，后者用软件。具体的东西我也不熟悉。
---
有人问我为啥不能编译个二进制文件放出来，因为这是内核模块啊，和大多的 OpenWrt 模块是不一样的，要和内核版本（精确到 commit id）严格对应。至于为啥要写到内核里，是历史原因：最开始我想修改 ipid，这当然在内核里更方便；后来又想改 ua，就继续写在内核里了。最开始的功能还很简单，后来代码一点点变复杂了，我也后悔开始时写到内核里了。

122
compile.md
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@ -1,122 +0,0 @@
以下，我假定你至少稍有一点命令行基础，搞不清当前目录或者 `cp`、`rm` 都不会用的话，自己找资料。
同时，以下内容中的代码仅仅是示例，目的是让你明白怎么回事，而不是复制粘贴就可以。
#### 一般的编译方法
对于 18.06 以上的 SDK，照这个方法就行了。
* 在电脑上安装一个 64 位的 Linux 系统。安装成虚拟机或双系统都可以。嫌麻烦的话，推荐使用 Win10 的 Ubuntu 子系统（WSL）。如果想要顺便体验实体机，强烈推荐 deepin。我使用的是 kubuntu 19.10。
* 安装编译依赖项。
```bash
sudo apt-get update && sudo apt-get install git-core build-essential libssl-dev libncurses5-dev unzip gawk subversion mercurial ccache tar ssh
```
记得开代理，或者换源。
* 准备 SDK。
必须使用与镜像完全对应的 SDK，而不能只是架构相同或者内核版本前三位相同。
官方 OpenWrt 的 SDK 和固件放在同一个目录下。比如，WNDR4300 的固件下载地址为：
```
http://downloads.openwrt.org/releases/18.06.1/targets/ar71xx/nand/openwrt-18.06.1-ar71xx-nand-wndr4300-ubi-factory.img
```
打开网站：
```
http://downloads.openwrt.org/releases/18.06.1/targets/ar71xx/nand/
```
就可以找到对应 SDK 的下载地址。
下载好 SDK 后，放到用户目录下，解压 SDK 并进入。
```bash
cd ~ && tar xvf openwrt-sdk*.tar.xz && cd openwrt-sdk*
```
（如果使用 WSL，可以将 SDK 放到 C 盘根目录，然后使用命令 `cd ~ && cp /mnt/c/*.tar.xz .` 将它复制到 WSL 中。）
* 下载 `xmurp-ua` 的源代码，并编译。
```bash
git clone https://github.com/CHN-beta/xmurp-ua.git package/xmurp-ua
make defconfig
make package/xmurp-ua/compile V=sc
```
编译好的包在 `bin` 中。
#### 增加编译参数
对于 18.06 以前的 SDK，编译的时候需要手动指定一些参数。参考[这篇文章](https://blog.csdn.net/wr132/article/details/78946200)。按照我的经验，一般来说，指定 `ARCH` 和 `CROSS-COMPILE` 就足够了。例如：
```bash
make package/xmurp-ua/compile V=sc ARCH=mips CROSS_COMPILE=/home/chn/Desktop/lede-sdk-17.01.5-ar71xx-generic_gcc-5.4.0_musl-1.1.16.Linux-x86_64/staging_dir/toolchain-mips_24kc_gcc-5.4.0_musl-1.1.16/bin/mips-openwrt-linux-musl-
```
#### 使用旧版 Makefile
对于 Openwrt 15.05（Chaos Calmer），Makefile 的格式与最新版本不同。使用 `Chaos_Calmer.Makefile` 代替 `Makefile` 再编译。
```bash
cp package/xmurp-ua/Chaos_Calmer.Makefile package/xmurp-ua/Makefile
```
#### 失效的 host 命令
我还遇到过这样的情况：
```
.find.bin: loadlocale.c:129: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))' failed.
.xargs.bin: loadlocale.c:129: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))' failed.
Aborted (core dumped)
Aborted (core dumped)
MODPOST 0 modules
.find.bin: loadlocale.c:129: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))' failed.
.xargs.bin: loadlocale.c:129: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))' failed.
.sed.bin: loadlocale.c:129: _nl_intern_locale_data: Assertion `cnt < (sizeof (_nl_value_type_LC_TIME) / sizeof (_nl_value_type_LC_TIME[0]))' failed.
Aborted (core dumped)
Aborted (core dumped)
Aborted (core dumped)
```
解决办法就是，用自己电脑上的来替换 SDK 里给的那些命令，然后重新编译。
```bash
rm -r staging_dir/host/bin
ln -s /usr/bin staging_dir/host/
rm -r build_dir/target-mips_24kc_musl-1.1.16/linux-ar71xx_generic/xmurp-ua
make package/xmurp-ua/compile V=sc ARCH=mips CROSS_COMPILE=/home/chn/Desktop/lede-sdk-17.01.5-ar71xx-generic_gcc-5.4.0_musl-1.1.16.Linux-x86_64/staging_dirtoolchain-mips_24kc_gcc-5.4.0_musl-1.1.16/bin/mips-openwrt-linux-musl-
```
#### ARCH 混乱
在给某个潘多拉编译的时候，发现在一些地方 `ARCH` 为 `mips` 而另一些地方为 `mipsel`。记得之前给某个版本的 LEDE 编译时也出现过类似的错误。用软链接解决。
```bash
cd build_dir
ln -s target-mipsel_1004kc+dsp_uClibc-1.0.x target-mips_1004kc+dsp_uClibc-1.0.x
cd ..
make package/xmurp-ua/compile V=sc ARCH=mips CROSS_COMPILE=/home/chn/Desktop/PandoraBox-SDK-ralink-mt7621_gcc-5.5.0_uClibc-1.0.x.Linux-x86_64-2019-02-01-git-0231ad4b5/staging_dir/toolchain-mipsel_1004kc+dsp_gcc-5.5.0_uClibc-1.0.x/bin/mipsel-openwrt-linux-
```
#### objtool 缺失
今天在 deepin 上编译时，遇到了下面的问题：
```
make[4]: *** No rule to make target 'tools/objtool/objtool', needed by '/home/chn/repo/xmurp-ua/debug/openwrt-sdk-18.06.5-x86-64_gcc-7.3.0_musl.Linux-x86_64/build_dir/target-x86_64_musl/linux-x86_64/xmurp-ua/xmurp-ua.o'. Stop.
```
解决办法是，把系统的 objtool 复制过来，然后再编译。
```bash
mkdir ./build_dir/target-x86_64_musl/linux-x86_64/linux-4.14.151/tools/objtool
cp /usr/src/linux-headers-4.15.0-30deepin-generic/tools/objtool/objtool ./build_dir/target-x86_64_musl/linux-x86_64/linux-4.14.151/tools/objtool/
```

2
src/Kconfig
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@ -1,2 +0,0 @@
config XMURP_UA
tristate "xmurp-ua"

1
src/Makefile
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@ -1 +0,0 @@
obj-${CONFIG_XMURP_UA} += xmurp-ua.o

337
src/xmurp-ua.c
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@ -1,337 +0,0 @@
#include <linux/module.h>
#include <linux/version.h>
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/netdevice.h>
#include <linux/random.h>
MODULE_AUTHOR("Haonan Chen");
MODULE_DESCRIPTION("Modify UA in HTTP for anti-detection of router in XMU.");
MODULE_LICENSE("GPL");
static struct nf_hook_ops nfho;
enum char_scan_enum
{
next,
modified_and_next,
scan_finish,
reset,
};
enum skb_scan_ret
{
need_next_frag = 1,
ua_modified = 2,
};
// 根据得到的指针尝试扫描，发现结尾或发现UA或更改UA后返回对应结果。
// 输入零指针则为重置状态。
inline u_int8_t char_scan(char *data)
{
const char str_ua_head[] = "User-Agent: ", str_ua[] = "XMURP/1.0", str_end[] = "\r\n\r\n";
// 不算'\0'，长度分别为12、9、4
static enum
{
nothing_matching,
ua_head_matching,
ua_modifying,
end_matching,
} status = nothing_matching;
static u_int8_t covered_length;
if(data == 0)
{
status = nothing_matching;
covered_length = 0;
return reset;
}
while(true)
{
if(status == nothing_matching)
{
if(*data == str_ua_head[0])
{
status = ua_head_matching;
covered_length = 1;
return next;
}
else if(*data == str_end[0])
{
status = end_matching;
covered_length = 1;
return next;
}
else
return next;
}
else if(status == ua_head_matching)
{
if(*data == str_ua_head[covered_length])
{
covered_length++;
if(covered_length == 12)
{
status = ua_modifying;
covered_length = 0;
return next;
}
else
return next;
}
else
status = nothing_matching;
}
else if(status == ua_modifying)
{
if(*data == '\r')
{
status = nothing_matching;
return scan_finish;
}
else
{
if(covered_length < 9)
*data = str_ua[covered_length];
else
*data = ' ';
covered_length++;
return modified_and_next;
}
}
else if(status == end_matching)
{
if(*data == str_end[covered_length])
{
covered_length++;
if(covered_length == 4)
{
status = nothing_matching;
return scan_finish;
}
else
return next;
}
else
status = nothing_matching;
}
}
}
// 将数据逐字节发送给下一层，根据下一层的结果（扫描到结尾、扫描到UA、已更改UA），确定是否扫描完毕，以及是否发生了改动，返回到上一层。
inline u_int8_t skb_scan(char *data_start, char *data_end)
{
register char *i;
register u_int8_t ret, modified = 0;
for(i = data_start; i < data_end; i++)
{
ret = char_scan(i);
if(ret == scan_finish)
return modified;
else if(ret == modified_and_next)
modified = ua_modified;
}
return modified + need_next_frag;
}
// 捕获数据包，检查是否符合条件。如果符合，则送到下一层，并根据下一层返回的结果，如果必要的话，重新计算校验和以及继续捕获下一个分片。
// ip地址、端口号、iph->tot_len需要网络顺序到主机顺序的转换。校验和时，除长度字段外，不需要手动进行网络顺序和主机顺序的转换。
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)
unsigned int hook_funcion(void *priv, struct sk_buff *skb, const struct nf_hook_state *state)
#else
unsigned int hook_funcion(const struct nf_hook_ops *ops, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *))
#endif
{
register struct tcphdr *tcph;
register struct iphdr *iph;
register char *data_start, *data_end;
static u_int8_t catch_next_frag = 0;
static u_int32_t saddr, daddr, seq;
static u_int16_t sport, dport;
static u_int32_t n_ua_modified = 0, n_ua_modify_faild = 0, n_not_modifible = 0, n_mark_matched = 0;
static u_int32_t n_ua_modified_lastprint = 1;
static u_int8_t mark_matched = 0, not_writable = 0;
register u_int8_t jump_to_next_function = 0, ret;
// 过滤发往外网的HTTP请求的包，且要求包的应用层内容不短于3字节
if(skb == 0)
return NF_ACCEPT;
iph = ip_hdr(skb);
if((ntohl(iph->daddr) & 0xffff0000) == 0xc0a80000)
return NF_ACCEPT;
if(iph->protocol != IPPROTO_TCP)
return NF_ACCEPT;
tcph = tcp_hdr(skb);
if(ntohs(tcph->dest) != 80)
return NF_ACCEPT;
data_start = (char *)tcph + tcph->doff * 4;
data_end = (char *)tcph + ntohs(iph->tot_len) - iph->ihl * 4;
if(data_end - data_start < 4)
return NF_ACCEPT;
if(skb->mark & 0x100)
{
if(!mark_matched)
{
mark_matched = 1;
printk("xmurp-ua: Mark matched. Note that all packages with the mark will be ACCEPT without modification.\n");
printk("xmurp-ua: If the mark is not set manually, it maybe a conflict there. "
"Find out which app is using the desired bit and let it use others, or modify and recompile me.\n");
}
n_mark_matched++;
return NF_ACCEPT;
}
// 决定是否发送到下一层
if(catch_next_frag && iph->saddr == saddr && iph->daddr == daddr &&
tcph->seq == seq && tcph->source == sport && tcph->dest == dport)
jump_to_next_function = 1;
else if(data_end - data_start > 3)
if(memcmp(data_start, "GET", 3) == 0 || memcmp(data_start, "POST", 4) == 0)
{
if(catch_next_frag)
{
n_ua_modify_faild++;
char_scan(0);
catch_next_frag = 0;
}
jump_to_next_function = 1;
}
if(!jump_to_next_function)
return NF_ACCEPT;
// 确保 skb 可以被修改，或者不可以被修改的话把它变得可修改
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
if(skb_ensure_writable(skb, (char*)data_end - (char*)skb -> data) || skb == 0 || skb -> data == 0)
#else
if(!skb_make_writable(skb, (char*)data_end - (char*)skb -> data) || skb == 0 || skb -> data == 0)
#endif
{
if(!not_writable)
{
not_writable = 1;
printk("xmurp-ua: There is a package not wirtable. Please make sure the router has enough memory.\n");
}
n_not_modifible++;
n_ua_modify_faild++;
catch_next_frag = 0;
return NF_ACCEPT;
}
else
{
iph = ip_hdr(skb);
tcph = tcp_hdr(skb);
data_start = (char *)tcph + tcph->doff * 4;
data_end = (char *)tcph + ntohs(iph->tot_len) - iph->ihl * 4;
}
// 发送到下一层，并回收数据
ret = skb_scan(data_start, data_end);
// 处理返回值
if(ret & need_next_frag)
{
if(!catch_next_frag)
{
catch_next_frag = 1;
saddr = iph->saddr;
daddr = iph->daddr;
sport = tcph->source;
dport = tcph->dest;
}
seq = tcph->seq + (data_end - data_start);
}
else
catch_next_frag = 0;
if(ret & ua_modified)
{
n_ua_modified++;
if(n_ua_modified == n_ua_modified_lastprint * 2)
{
printk("xmurp-ua: Successfully modified %u packages, faild to modify %u packages, %u packages matched mark, %u packages not modifiable.\n",
n_ua_modified, n_ua_modify_faild, n_mark_matched, n_not_modifible);
n_ua_modified_lastprint *= 2;
}
tcph->check = 0;
iph->check = 0;
skb->csum = skb_checksum(skb, iph->ihl * 4, ntohs(iph->tot_len) - iph->ihl * 4, 0);
iph->check = ip_fast_csum(iph, iph->ihl);
tcph->check = csum_tcpudp_magic(iph->saddr, iph->daddr, ntohs(iph->tot_len) - iph->ihl * 4, IPPROTO_TCP, skb->csum);
}
return NF_ACCEPT;
}
static int __init hook_init(void)
{
int ret;
nfho.hook = hook_funcion;
nfho.pf = NFPROTO_IPV4;
nfho.hooknum = NF_INET_POST_ROUTING;
nfho.priority = NF_IP_PRI_FILTER;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,13,0)
ret = nf_register_net_hook(&init_net, &nfho);
#else
ret = nf_register_hook(&nfho);
#endif
printk("xmurp-ua: Started, version %d.\n", VERSION);
printk("xmurp-ua: nf_register_hook returnd %d.\n", ret);
printk("\n");
printk("|-------------------------------------------------------------------------|\n");
printk("| |\n");
printk("| 关于反对黑心商家的申明： |\n");
printk("| |\n");
printk("| XMURP-UA 由我一人（厦门大学陈浩南）编写并维护，开源免费地提供给所 |\n");
printk("| 有人使；相关教程也是我们写好并免费公开在网上的。我从来没有允许、并且 |\n");
printk("| **明确禁止**用于商业用途。但现实是，有人将我现成的结果安装到路由器中 |\n");
printk("| 拿去售卖，并且价格不菲。 |\n");
printk("| |\n");
printk("| 如果您看到了这条消息，希望您能够从身边小事做起，拒绝黑心商家。如 |\n");
printk("| 果您本人已经购买了这样的路由器，希望您能够退货、追回自己的损失；如果 |\n");
printk("| 您身边有人推销或有意愿购买这样的路由器，请将真相告诉他们。 |\n");
printk("| |\n");
printk("| 1. 商家会把廉价的路由器用高昂的售价出售。事实上，只要二三十块就可 |\n");
printk("| 以在闲鱼买到基本够宿舍用的、可以破解校园网的路由器（极路由 1s）。 |\n");
printk("| |\n");
printk("| 2. 商家不管售后，也无力售后。事实上，卖你路由器的人大多也是小白， |\n");
printk("| 无非看过我们写的教程；出了问题他们就推脱，是校园网的问题，是路由器坏 |\n");
printk("| 了，殊不知一句命令就可以解决。 |\n");
printk("| |\n");
printk("| 3. 商家不尊重我们，大规模商业使用我们的技术获利，甚至把我们的群当 |\n");
printk("| 免费的售后，自己只顾收钱。 |\n");
printk("| |\n");
printk("| 我今天十分气愤，因此写了这些内容。希望更多的人可以看见。 |\n");
printk("| |\n");
printk("|-------------------------------------------------------------------------|\n");
printk("| |\n");
printk("| 在使用的过程中，如果需要帮助，可以加入我们的 QQ 群：748317786。付 |\n");
printk("| 费购买路由器者，恕不提供任何帮助。 |\n");
printk("| |\n");
printk("|-------------------------------------------------------------------------|\n");
printk("\n");
return 0;
}
//卸载模块
static void __exit hook_exit(void)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,13,0)
nf_unregister_net_hook(&init_net, &nfho);
#else
nf_unregister_hook(&nfho);
#endif
printk("xmurp-ua: Stopped.\n");
}
module_init(hook_init);
module_exit(hook_exit);

15
srun3.md
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@ -1,15 +0,0 @@
**如果你不是从我的博客来的，那么这个文件对你没有用。**
* 修改拨号脚本。WinSCP 连接到路由器后，打开文件 `/lib/netifd/proto/ppp.sh`，这个文件就是拨号的脚本了。搜索 `username` 关键字，可以找到这样一句：
```bash
${username:+user "$username" password "$password"} \
```
* 把它修改成：
```bash
${username:+user "$(echo -e $username)" password "$password"} \
```
保存，关闭 WinSCP。

0
新建文件夹/.gitkeep Normal file
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