当前位置: 首页 > news >正文

现在pc网站的标准一般是做多大杭州网站推广优化

现在pc网站的标准一般是做多大,杭州网站推广优化,云南卫健委疫情公布,自己可以用百度云做网站吗uhttpd作为一个简单的web服务器,其代码量并不多,而且组织结构比较清楚。和其它网络服务器差不多,其main函数进行一些初始化(首先parse config-file,然后parse argv),然后进入一个循环&#xff0…

uhttpd作为一个简单的web服务器,其代码量并不多,而且组织结构比较清楚。和其它网络服务器差不多,其main函数进行一些初始化(首先parse config-file,然后parse argv),然后进入一个循环,不断地监听,每当有一个客户请求到达时,则对它进行处理。

1、uhttpd uci配置参数说明

/etc/init.d/uhttpd脚本会使用procd的方式启动uhttpd进程,该工具后面可以带很多参数,如下:

root@zihome:~# uhttpd -h
uhttpd: option requires an argument -- h
Usage: uhttpd -p [addr:]port -h docroot-f              Do not fork to background-c file         Configuration file, default is '/etc/httpd.conf'-p [addr:]port  Bind to specified address and port, multiple allowed-s [addr:]port  Like -p but provide HTTPS on this port-C file         ASN.1 server certificate file-K file         ASN.1 server private key file-h directory    Specify the document root, default is '.'-E string       Use given virtual URL as 404 error handler-I string       Use given filename as index for directories, multiple allowed-S              Do not follow symbolic links outside of the docroot-D              Do not allow directory listings, send 403 instead-R              Enable RFC1918 filter-n count        Maximum allowed number of concurrent script requests-N count        Maximum allowed number of concurrent connections-l string       URL prefix for Lua handler, default is '/lua'-L file         Lua handler script, omit to disable Lua-u string       URL prefix for UBUS via JSON-RPC handler-U file         Override ubus socket path-a              Do not authenticate JSON-RPC requests against UBUS session api-X              Enable CORS HTTP headers on JSON-RPC api-x string       URL prefix for CGI handler, default is '/cgi-bin'-i .ext=path    Use interpreter at path for files with the given extension-t seconds      CGI, Lua and UBUS script timeout in seconds, default is 60-T seconds      Network timeout in seconds, default is 30-k seconds      HTTP keepalive timeout-d string       URL decode given string-r string       Specify basic auth realm-m string       MD5 crypt given string

openwrt上面还是通过uci来配置uhttpd,配置文件如下:

config uhttpd 'main'list listen_http '0.0.0.0:80'list listen_http '[::]:80'list listen_https '0.0.0.0:443'list listen_https '[::]:443'option home '/www'option rfc1918_filter '1'option max_requests '3'option max_connections '10'option cert '/etc/uhttpd.crt'option key '/etc/uhttpd.key'option cgi_prefix '/cgi-bin'option script_timeout '120'option network_timeout '60'option http_keepalive '60'option tcp_keepalive '5'option no_ubusauth '0'option ubus_prefix '/ubus'

uHTTPd 配置项含义:

名 称类 型含 义
listen_http字符串定义服务器的 IP 和端口。指所监听的非加密的地址和端口。如果仅给出端口号,将同时服务于IPv4和IPv6请求。使用0.0.0.0:80仅绑定在 IPv4 接口,使用[::]:80 仅绑定 IPv6
home目录路径定义服务器的文档根目录
max_requests整型数字最大的并行请求数,如果大于这个值,后续的请求将进入排队队列中
cert文件路径用于 HTTPS 连接的 ASN.1/DER 证书。在提供 HTTS 连接时必须提供
key文件路径用于 HTTPS 连接的 ASN.1/DER 私钥。在提供 HTTPS 连接时必须提供
cgi_prefix字符串定义 CGI 脚本的相对于根目录的前缀。如果没有该选项,CGI功能将不支持
script_timeout整型数字Lua 或CGI请求的最大等待时间秒值。如果没有输出产生,则超时后执行就结束了
network_timeout整型数字网络活动的最大等待时间,如果指定的秒数内没有网络活动发生,则程序终止,连接关闭
tcp_keepalive整型数字tcp 心跳检测时间间隔,发现对端已不存在时则关闭连接。设置为 0 则关闭 tcp 心跳检测
realm字符串基本认证的域值,默认为主机名,是当客户端进行基本认证的提示内容
config文件路径用于基本认证的配置文件
no_dirlists是否显示文件列表正常情况可以直接通过浏览器查看文件,不安全可以使用该字段屏蔽浏览器查看
max_requests最大请求数同时处理的请求的最大数量。当这个数量被超过时,额外的请求将被放入队列中等待
max_connections最大连接数同时处理的最大TCP连接数量。当这个数量被超过时,额外的TCP连接尝试将被放入队列中等待
ubus_prefixubus前缀使用JSON-RPC访问,如http://192.168.18.1/ubus.
ubus_noauthsession认证关闭后可以不用认证,直接访问http接口

/etc/init.d/uhttpd脚本在启动的时候会去获取/etc/config/uhttpd配置里面的信息然后进行启动,我们现在用到的参数如下:

root@zihome:/# ps | grep uhttp1395 root      1556 S    /usr/sbin/uhttpd -f -h /www -r openwrt -x /cgi-bin -t 120 -T 60 -k 60 -A 5 -n 3 -N 10 -R -p 0.0.0.0:80 -p [::]:80
31572 root      1520 S    grep uhttp

https://openwrt.org/docs/guide-user/services/webserver/uhttpd

2、uhttpd的登录认证超时机制

登录做为web登录最基础的功能,其背后是由rpcd提供的session模式实现的。

session模式实现了创建、更新、退出、添加acl权限等功能。

具体使用可以查看rpcd的介绍:

'session' @3602a25d"create":{"timeout":"Integer"}"list":{"ubus_rpc_session":"String"}"grant":{"ubus_rpc_session":"String","scope":"String","objects":"Array"}"revoke":{"ubus_rpc_session":"String","scope":"String","objects":"Array"}"access":{"ubus_rpc_session":"String","scope":"String","object":"String","function":"String"}"set":{"ubus_rpc_session":"String","values":"Table"}"get":{"ubus_rpc_session":"String","keys":"Array"}"unset":{"ubus_rpc_session":"String","keys":"Array"}"destroy":{"ubus_rpc_session":"String"}"login":{"username":"String","password":"String","timeout":"Integer"
3、ubus over http功能

在openwrt默认的web应用中,很主要的一共功能点,就是展示和设置信息。因为ubus -v list里面覆盖了大部分我们需要的信息,所以如果可以通过一种简单的rpc方案,通过http直接访问ubus的内容那就方便了。

这就是ubus over http功能,web发送一个http请求,这个请求的结构根据ubus命令封装之后,直接从ubus接口里面获取内容返回给web页面。

因为ubus接口里面包含了太多的信息,我们不想把所有信息都暴露给web,所以有了rpcd里面的acls权限管理。权限管理里面说明了只能执行那些命令。

使用该功能需要在uci里面把配置打开

option ubus_prefix	/ubus

之后可以用postman发送post请求

登录:

{"jsonrpc":"2.0","id":1,"method":"call","params":["00000000000000000000000000000000","session","login",{"username":"root","password":"admin"}]
}

此时会返回该账号的session,还有权限之类的

{"jsonrpc": "2.0","id": 1,"result": [0,{"ubus_rpc_session": "e5333f3fe2ed4601be3b0a8da0a6998e","timeout": 300,"expires": 300,"acls": {"access-group": {"luci-access": ["read","write"],"luci-app-firewall": ["read","write"],..."uci-access": ["read","write"],"unauthenticated": ["read"]},"cgi-io": {"backup": ["read"],"download": ["read"],"exec": ["read"],"upload": ["write"]},"file": {"/": ["list"],"/*": ["list"],"/bin/dmesg -r": ["exec"],..."/usr/sbin/logread -e ^": ["exec"]},"ubus": {"file": ["list","read","stat","write","remove","exec"],"hostapd.*": ["del_client"],"iwinfo": ["assoclist","freqlist","txpowerlist","countrylist","scan"],"luci": ["getFeatures","getConntrackList","getInitList","getLocaltime","getProcessList","getRealtimeStats","getTimezones","getLEDs","getUSBDevices","getSwconfigFeatures","getSwconfigPortState","getBlockDevices","getMountPoints","setInitAction","setLocaltime","setPassword","setBlockDetect","getConntrackHelpers"],"luci-rpc": ["getBoardJSON","getDHCPLeases","getDSLStatus","getDUIDHints","getHostHints","getNetworkDevices","getWirelessDevices"],"network": ["get_proto_handlers"],"network.interface": ["dump"],"network.rrdns": ["lookup"],"session": ["access","login"],"system": ["board","info","validate_firmware_image"],"uci": ["changes","get","add","apply","confirm","delete","order","set","rename"]},"uci": {"*": ["read","write"],..."uhttpd": ["read","write"]}},"data": {"username": "root"}}]
}

之后我们就可以使用这个session进行发送ubus请求,比如系统信息

{"jsonrpc":"2.0","id":1,"method":"call","params":["2cd182b0120310db8869b43d4340a307","system","board",{}]
}

返回内容:

{"jsonrpc": "2.0","id": 1,"result": [0,{"kernel": "4.14.275","hostname": "OpenWrt","system": "Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz","model": "VMware, Inc. VMware Virtual Platform","board_name": "vmware-inc-vmware-virtual-platform","release": {"distribution": "OpenWrt","version": "19.07-SNAPSHOT","revision": "r11430-ecbbb37","target": "x86/64","description": "OpenWrt 19.07-SNAPSHOT r11430-ecbbb37"}}]
}

可以看到返回的内容跟直接输入ubus call一致

root@OpenWrt:~# ubus call system board
{"kernel": "4.14.275","hostname": "OpenWrt","system": "Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz","model": "VMware, Inc. VMware Virtual Platform","board_name": "vmware-inc-vmware-virtual-platform","release": {"distribution": "OpenWrt","version": "19.07-SNAPSHOT","revision": "r11430-ecbbb37","target": "x86/64","description": "OpenWrt 19.07-SNAPSHOT r11430-ecbbb37"}
}

当然如果不属于上面权限的ubus消息是无法发送的,比如

{"jsonrpc":"2.0","id":1,"method":"call","params":["2cd182b0120310db8869b43d4340a307","network.interface.lan","status",{}]
}

返回没有权限

{"jsonrpc": "2.0","id": 1,"error": {"code": -32002,"message": "Access denied"}
}

这些权限的配置都位于/usr/share/rpcd/acl.d/目录下面配置,我们可以自己按照规则增删。

上面json请求的结构体描述如下:

{ "jsonrpc": "2.0","id": <unique-id-to-identify-request>, "method": "call","params": [<ubus_rpc_session>, <ubus_object>, <ubus_method>, { <ubus_arguments> }]
}
{ "jsonrpc": "2.0", "id": 1, "method": "call", "params": [ "c1ed6c7b025d0caca723a816fa61b668", "file", "read", { "path": "/etc/board.json" } ] }

how to use ubus over http in openwrt 12.09
:https://www.cnblogs.com/nicephil/p/6768381.html#e4bdbfe794a8e696b9e6b395_2

openwrt-rpcd服务ACL配置错误风险分析:https://www.cnblogs.com/hac425/p/9416854.html

https://openwrt.org/docs/techref/ubus#access_to_ubus_over_http

4、cgi框架

要运行cgi程序,首先意味着需fork出一个子进程,并通过execl函数替换进程空间为cgi程序;其次,数据传递,子进程替换了进程空间后,怎么获得原信息,有怎么把回馈数据传输给父进程(即uhttpd),父进程又怎么接收这些数据。

https://www.cnblogs.com/zmkeil/archive/2013/05/14/3078766.html

http://www.hrbkazy.com/news/20151.html

相关文章:

  • 福建有没有网站做鞋子一件代发杭州网站推广与优化
  • jeecg 3.7 网站开发谷歌外贸平台
  • hexo框架做网站简述seo的优化流程
  • 从零学习做网站新闻稿发布软文平台
  • 网站建设源文件关键词排名方案
  • 南京h5 网站建设搜索引擎平台有哪些
  • 外贸网站建设广州网站关键词优化有用吗
  • 龙岗做网站的公司刚刚刚刚刚刚刚刚刚刚刚刚刚刚刚
  • 昆明云南微网站制作培训机构seo
  • 中国做网站短视频seo营销
  • 邯郸做网站哪里好站长之家ppt模板
  • 大庆网站建设长沙市最新疫情
  • 昆明云南微网站建设灰色关键词快速排名
  • ps怎么做网站设计牛推网络
  • 怎么网站建设怎么优化关键词排名优化
  • 动态网站设计与开发心得体会百度搜索引擎入口官网
  • 网站被封了怎么办治疗腰椎间盘突出的特效药
  • 一般电商都是在哪些网站上做交换友情链接的方法
  • 商业网站是怎么做的企业网站优化
  • 南昌建设医院官方网站竞价推广怎样管理
  • 网站图片怎么做seo网站课程
  • 有关房地产开发建设的网站我是做推广的怎么找客户
  • 网站建设与推广实训报告百度建站多少钱
  • 多语言网站建设平台代理广告大全
  • Tp5即做网站又提供api接口网店推广策划书
  • 济宁城乡建设局网站推广软文案例
  • 全自动免费网页制作百度seo排名优化是什么
  • 太原广告公司网站建设高端网站优化公司
  • lol小米和谁做的视频网站seo优化培训多少钱
  • 章丘网站建设上海最新发布最新