1、下载GoAhead2.5
下载地址:https://github.com/embedthis/goahead/releases?after=v3.1.2
2、编译
先解压到虚拟机的/opt目录下,cd /opt/goahead-2.5.0/LINUX,修改Makefile文件,在文件的最前面添加如下代码:
CROSS_COMPILE =/opt/arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
AS = $(CROSS_COMPILE)as
LD = $(CROSS_COMPILE)ld
CC = $(CROSS_COMPILE)gcc
CPP = $(CC) -E
AR = $(CROSS_COMPILE)ar
NM = $(CROSS_COMPILE)nm
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
修改输出库名称:
ARCH = libwebs_arm_linux_gnueabihf.a
注释掉SSL功能,并保存
#matrixsslDir:=$(shell ls -d ../matrixssl-3-1*/)
make
这时会在LINUX目录下生成libwebs_arm_linux_gnueabihf.a库,/opt/goahead-2.5.0目录下所有头文件(wsInitn.h、websSSL.h、websda.h、webs.h、um.h、uemf.h、md5.h、matrixSSLSocket.h、emfdb.h、ejIntrn.h、ej.h)和libwebs_arm_linux_gnueabihf.a库可以用于开发webserver程序,/opt/goahead-2.5.0/LINUX目录下的main.c文件中webserver启动过程可以用于自己开发webserver程序的一部分,以Qt开发为例,可以单独创建一个线程QWebServerThread。
头文件qwebserverthread.h
class QWebServerThread : public QThread
{
Q_OBJECT
public:
QWebServerThread(QString strWeb,QString strIP,int nPort,int nRPort);
~QWebServerThread ();
int initWeb();
static int websHomePageHandler(webs_t wp, char_t *urlPrefix, char_t *webDir,int arg, char_t *url, char_t *path, char_t *query);
#ifdef B_STATS
void memLeaks();
void printMemStats(int handle, char_t *fmt, ...);
#endif
protected:
void run();
private:
QString strWeb;
QString strIP;
int nPort;
int nRPort;
}
cpp文件qwebserverthread.cpp
#include "qwebserverthread.h"
WebServerThread::QWebServerThread(QString strWeb,QString strIP,int nPort)
{
this->strWeb = WebRoot;
this->strIP = strIP;
this->nPort = nPort;
this->nRPort = nRPort;
}
QWebServerThread::~QWebServerThread()
{
}
void QWebServerThread::run()
{
/*
*首先分配一个大的内存块(60*1024字节),以后只要是以b开头的对内存操作的函数都是在这个已经分好的内存块上的操作,这些操作在Balloc.c中实现。
*/
bopen(NULL,(60 * 1024),B_USE_MALLOC);
/*
*忽略SIGPIPE信号
*/
signal(SIGPIPE,SIG_IGN);
/*
*Initialize the web server
*初始化用户管理部分,打开web服务器,注册URL处理函数。
*用户管理部分在um.c中实现,
*Web服务器的初始化是在default.c和webs.c中实现
*url处理函数在handler.c中实现
*/
if(initWeb() < 0)
{
printf("initWeb error.
");
return;
}
/*
*初始化Ssl认证部分
*注:在这个文档中对ssl认证不做研究
*/
#ifdef WEBS_SSL_SUPPORT
websSSLOpen();
#endif
/*
* Basic event loop. SocketReady returns true when a socket is ready for
* service. SocketSelect will block until an event occurs. SocketProcess
* will actually do the servicing.
*/
/*
*主循环
*/
while(getRunState())
{
/*
1,socketReady()函数检查是否有准备好的sock事件
2,socketSelect()函数首先把各个sock感兴趣的事件(sp->handlerMask)注册给三个集合(读,写,例外),然后调用select系统调用,然后更新各个sock的sp->currentEvents,表示各个sock的当前状态。
这两个函数在sockGen.c中实现,他们主要操作的数据是socket_t变量socketList中的handlerMask和currentEvents,socketList在sock.c中定义并主要由该文件中的socketAlloc,socketFree和socketPtr三个函数维护。
*/
if(socketReady(-1) || socketSelect(-1,1000))
{
/*
该函数处理具体的sock事件
1,调用socketReady(sid)对socketList[sid]进行检查,看是否有sock事件
2,如果有sock事件,则调用socketDoEvent()函数,对事件进行处理
*/
socketProcess(-1);
}
/*
该函数在cgi.c中实现,检查cgiRec变量cgilist,首先把cgi的结果输出,如果有的话,然后看cgi进程是否已对号束,如果结束,就清理该cgi进程。
Cgilist在函数websCgiHandler和websCgiCleanup中维护。
*/
websCgiCleanup();
/*
该函数在websuemf.c中实现,功能是检查sched_t变量sched,断开超时的连接,sched变量在emfSchedCallback和emfUnschedCallback中维护
*/
emfSchedProcess();
}
/*
退出时的清理工作,永远不会执行到这里
*/
#ifdef WEBS_SSL_SUPPORT
websSSLClose();
#endif
#ifdef USER_MANAGEMENT_SUPPORT
umClose();
#endif
//Close the socket module, report memory leaks and close the memory allocator
websCloseServer();
socketClose();
#ifdef B_STATS
memLeaks();
#endif
bclose();
}
int QWebServerThread::initWeb()
{
//Initialize the socket subsystem
socketOpen();
#ifdef USER_MANAGEMENT_SUPPORT
/*
* Initialize the User Management database
*/
umOpen();
umRestore((char_t*)_T("umconfig.txt"));
#endif
/*
* Define the local Ip address, host name, default home page and the
* root web directory.
*/
struct in_addr intaddr;
intaddr.s_addr = inet_addr(strIP .toUtf8().data());
/*
* Set ../www as the root web
*/
char *cp;
char* dir = NULL;
getcwd(dir, sizeof(dir));
if ((cp = strrchr(dir, '/')))
{
*cp = ' ';
}
char* WebDir = NULL;
sprintf(WebDir, "%s/%s", dir, strWeb.toUtf8().data());
/*
* Configure the web server options before opening the web server
*/
websSetDefaultDir(pWebDir);
SAVE_DELETE_ARRAY(dir);
SAVE_DELETE_ARRAY(WebDir);
char_t wbuf[128] = {0};
char *cp = inet_ntoa(intaddr);
ascToUni(wbuf, cp, min(strlen(cp) + 1, sizeof(wbuf)));
websSetIpaddr(wbuf);
ascToUni(wbuf, host, min(strlen(host) + 1, sizeof(wbuf)));
websSetHost(wbuf);
/*
* Configure the web server options before opening the web server
*/
websSetDefaultPage("default.asp");
websSetPassword( (char_t*)_T(""));
/*
* Open the web server on the given port. If that port is taken, try
* the next sequential port for up to "retries" attempts.
*/
websOpenServer(m_nPort, nRPort);
/*
* First create the URL handlers. Note: handlers are called in sorted order
* with the longest path handler examined first. Here we define the security
* handler, forms handler and the default web page handler.
*/
websUrlHandlerDefine((char_t*)_T(""), NULL, 0, websSecurityHandler,WEBS_HANDLER_FIRST);
websUrlHandlerDefine((char_t*)_T("/goform"), NULL, 0, websFormHandler, 0);
websUrlHandlerDefine((char_t*)_T("/cgi-bin"), NULL, 0, websCgiHandler, 0);
websUrlHandlerDefine((char_t*)_T(""), NULL, 0, websDefaultHandler,WEBS_HANDLER_LAST);
/*
* Now define two test procedures. Replace these with your application
* relevant ASP script procedures and form functions.
*/
registeredHandler(); //注册函数 如asp函数和表单处理函数(自定义函数)
/*
* Create the Form handlers for the User Management pages
*/
#ifdef USER_MANAGEMENT_SUPPORT
formDefineUserMgmt();
#endif
/*
* Create a handler for the default home page
*/
websUrlHandlerDefine((char_t*)_T("/"),NULL,0,websHomePageHandler,0);
return 0;
}
//Home page handler
int QWebServerThread::websHomePageHandler(webs_t wp, char_t *urlPrefix, char_t *webDir,int arg, char_t *url, char_t *path, char_t *query)
{
(void*)(urlPrefix);
(void*)(webDir);
(void*)(arg);
(void*)(path);
(void*)(query);
//If the empty or "/" URL is invoked, redirect default URLs to the home page
if(*url == ' ' || gstrcmp(url, (char_t*)_T("/")) == 0)
{
websRedirect(wp, (char_t*)WEBS_DEFAULT_HOME);
return 1;
}
return 0;
}
#ifdef B_STATS
void QWebBase::memLeaks()
{
int fd;
if ((fd = gopen(_T("leak.txt"), O_CREAT | O_TRUNC | O_WRONLY, 0666)) >= 0) {
bstats(fd, printMemStats);
close(fd);
}
}
//Print memory usage / leaks
void QWebBase::printMemStats(int handle, char_t *fmt, ...)
{
va_list args;
char_t buf[256];
va_start(args, fmt);
vsprintf(buf, fmt, args);
va_end(args);
write(handle, buf, strlen(buf));
}
#endif