void *accept_request(void *arg)
{
printf("debug:get a connect\n");
pthread_detach(pthread_self());
int client=(int)arg;
char path[1024];
int cgi=0;
char*query_string=NULL;//指向url的指针
char buf[1024];
char method[100];
char url[2048];
memset(method,'\0',sizeof(method));
memset(url,'\0',sizeof(url));
memset(buf,'\0',sizeof(buf));
memset(path,'\0',sizeof(path));
//#ifdef DEBUG
// while(get_line(client,buf,sizeof(buf))>0)
// {
// printf("%s");
// }
//#endif
if(get_line(client,buf,sizeof(buf)-1)<0)//得到了一个链接，但是读取一行失败
{
return_error_client();
close(client);
return (void *)-1;
}
printf("debug:%s\n",buf);
//读取成功，得到了请求行存储在buf中
//请求行格式是 GET / HTTP/1.1
int i=0;//buf下标
int j=0;//method下标
while(!isspace(buf[i]) && i<sizeof(buf)-1 && j<sizeof(method)-1)//提取到方法
{
method[j]=buf[i];
i++;
j++;
}
if(strcasecmp(method,"GET") && strcasecmp(method,"POST"))//判断是不是GET或POST方法
{
return_error_client();
close(client);
return (void *)-1;
}
if(!strcasecmp(method,"POST"))
{
cgi=1;
}
while(isspace(buf[i])&&i<sizeof(buf))//跳过空格
{
i++;
}
j=0;//此时j为url的下标
while(!isspace(buf[i]) && j<sizeof(url)-1 && i<sizeof(buf))//将buf中存储的url信息放在url数组中
{
url[j]=buf[i];
i++;
j++;
}
if(strcasecmp(method,"GET")==0)//判断在GET方法下是不是传递了参数
{
query_string=url;
while(*query_string!='?' && *query_string!='\0')
{
query_string++;
}
if(*query_string=='?')//遇到了？说明传递了参数，必须要通过cgi来处理
{
*query_string='\0';
query_string++;
cgi=1;
}
}
sprintf(path,"htdocs%s",url);//将路径存储在path中
if(path[strlen(path)-1]=='/')//处理根目录路径的情况
{
strcat(path,MAIN_PAGE);//将index.html追加到后面
}
struct stat st;
int ret=stat(path,&st);
if(ret<0)//所要请求路径资源不存在
{
return_error_client();
close(client);
return (void*)-1;
}
else//存在
{
if(S_ISDIR(st.st_mode))//请求的路径是目录
{
strcat(path,"/");
strcat(path,MAIN_PAGE);
}
else if((st.st_mode & S_IXUSR)||(st.st_mode & S_IXGRP)||(st.st_mode & S_IXOTH))//具有可执行权限，通过CGI方式执行
{
// printf("path:%s\n",path);
// printf("method:%s\n",method);
// printf("query_string:%s\n",query_string);
cgi=1;
}
if(cgi)
{
exe_cgi(client,path,method,query_string);
}
else
{
echo_html(client,path,st.st_size);
}
}
close(client);
return (void*)0;
}
void* accept_request(void* arg)
{
pthread_detach(pthread_self());
int sock = (int)arg;
char buf[_SIZE_];
char method[_SIZE_];
char url[_SIZE_];
char path[_SIZE_];
memset(buf, '\0', sizeof(buf));
memset(method, '\0', sizeof(method));
memset(url, '\0', sizeof(url));
memset(path, '\0', sizeof(path));
int cgi = 0;
int ret = -1;
char* query_string = NULL;
#ifdef _DEBUG_
do{
ret = get_line(sock, buf, sizeof(buf));
printf("%s", buf);
fflush(stdout);
} while((ret > 0) && (strcmp(buf, "\n") != 0));
#endif
ret = get_line(sock, buf, sizeof(buf));
if(ret < 0)
{
echo_errno(sock);
return (void *)1;
}
//GET /HTTP/1.1
int i = 0; // method index
int j = 0; // buf index
while( (i < sizeof(method)-1) && (j < sizeof(buf)) && (!isspace(buf[j])))
{
method[i] = buf[j];
i++, j++;
}
method[i] = '\0';
while( isspace(buf[j]) )
{
j++;
}
if(strcasecmp(method, "GET") != 0 && strcasecmp(method, "POST") != 0)
{
echo_errno(sock);
return (void*)2;
}
if(strcasecmp(method, "POST") == 0)
{
cgi = 1;
}
i = 0; // url index
while( (i<sizeof(url)-1) && (j < sizeof(buf)) && (!isspace(buf[j])))
{
url[i] = buf[j];
i++, j++;
}
if(strcasecmp(method, "GET") == 0)
{
query_string = url;
while(*query_string != '\0' && *query_string != '?' )
{
query_string++;
}
if(*query_string == '?')
{
cgi = 1;
*query_string = '\0';
query_string++;
}
}
// / /aa/bb/cc
sprintf(path, "htdoc%s", url); // htdoc/
if(path[strlen(path) - 1] == '/')
{
strcat(path, "index.html");
}
printf("method: %s\n", method);
printf("path: %s\n", path);
printf("query_string: %s\n", query_string);
struct stat st;
if(stat(path, &st) < 0)
{
echo_errno(sock);
return (void*)3;
}
else
{
if(S_ISDIR(st.st_mode))
{
strcpy(path, "htdoc/index.html");
}
else if( (st.st_mode & S_IXUSR) || (st.st_mode & S_IXGRP) || (st.st_mode & S_IXOTH) )
{
cgi = 1;
}
else
{}
if(cgi)
{
exec_cgi(sock, path, method, query_string);
}
else
{
clear_header(sock);
echo_html(sock, path, st.st_size);
}
}
close(sock);
return (void*)0;
}
