void process_cgi(SWS_REQUEST* req_ptr){
struct stat st;
char *question_mark;
char absolute_path[PATH_MAX_SIZE];
char arg_str[PATH_MAX_SIZE];
if (req_ptr->method != METHOD_GET){
clientError(501, "Not Implemented", req_ptr);
}
memset(absolute_path, 0, PATH_MAX_SIZE);
memset(arg_str, 0, PATH_MAX_SIZE);
if ( (question_mark = strchr(req_ptr->path, '?')) != NULL ){
*question_mark = '\0';
snprintf(absolute_path,PATH_MAX_SIZE, "%s/%s", dir, req_ptr->path);
snprintf(arg_str, PATH_MAX_SIZE, "%s", &question_mark[1]);
}else{
snprintf(absolute_path,PATH_MAX_SIZE, "%s/%s", dir, req_ptr->path);
}
printf("cgi-file absolute_path : %s\n", absolute_path);
printf("cgi-file argument list : %s\n", arg_str[0] == '\0'?"No Argument":arg_str);
if (stat(absolute_path, &st) < 0){
perror("stat");
clientError(404, "Not Found", req_ptr);
}
switch(st.st_mode&S_IFMT){
case S_IFREG:
if (st.st_mode&(S_IXUSR | S_IXGRP | S_IXOTH)){
exe_cgi(req_ptr, absolute_path, arg_str);
}else{
clientError(500, "Internal Server Error", req_ptr);
}
break;
default:
clientError(500, "Internal Server Error", req_ptr);
break;
}
}
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;
}
static void* accept_request(void *arg) //static
{
int sock = (int)arg;
char buf[SIZE];
int len = sizeof(buf)/sizeof(*buf);
char method[SIZE/10];
char url[SIZE];
char path[SIZE];
int ret = -1;
int i = 0;
int j = 0;
char *query_string = NULL; //aim at val(can shu)
int cgi = 0;
#ifdef _DEBUG_
// do
// {
// ret = get_line(sock, buf, len);
// printf("%s", buf);
// fflush(stdout);
// }while(ret > 0 && (strcmp(buf, "\n") != 0) );
#endif
memset(buf, '\0', sizeof(buf));
memset(method, '\0', sizeof(method));
memset(url, '\0', sizeof(url));
memset(path, '\0', sizeof(buf));
//Request Line
ret = get_line(sock, buf, len);
if(ret <= 0)
{
echo_errno(sock);
return (void*)1;
}
i = 0; //method index
j = 0; //buf index
while((i < (sizeof(method)/sizeof(*method) - 1)) && (j < sizeof(buf)/sizeof(*buf) - 1) && (!isspace(buf[j]) ) )
{
method[i] = buf[j];
++i;
++j;
}
method[i] = '\0';
if((strcasecmp(method, "GET") != 0) && (strcasecmp(method, "POST")) )
{
//echo_errno(sock);
return (void*)2;
}
//URL
while(isspace(buf[j])) //Remove Space
{
++j;
}
i = 0;
while( ( i < sizeof(url)/sizeof(*url)-1 ) && (j < sizeof(buf)/sizeof(*buf)) && (!isspace(buf[j])) )
{
url[i] = buf[j];
++i;
++j;
}
url[i] = '\0';
if( strcasecmp(method, "POST") == 0 )
{
cgi = 1;
sprintf(path, "%s", url+1);
}
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;
}
}
if( strcasecmp(method, "GET") == 0 )
{
sprintf(path, "htdoc%s", url);
if( path[strlen(path)-1] == '/' )
{
strcat(path, "index.html");
}
}
struct stat st;
if( stat(path, &st) < 0 )
{
//echo_errno(); //404
return (void*)3;
}
else //case : DIR
{
if( S_ISDIR(st.st_mode) )
{
strcat(path, "index.html");
}
else if( (st.st_mode & S_IXUSR) || (st.st_mode & S_IXGRP) || (st.st_mode & S_IXOTH) ) //bin(binary file)
{
cgi = 1;
}
else
{} //noting to do
}
printf("!@!#%@^ %s !@%@^%\n", buf);
if(cgi) // u+x file
{
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!cgi\n");
exe_cgi(sock, method, path, query_string); //cgi mode
}
else //.jpg .html ...
{
printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!www\n");
clear_header(sock); //! important!
echo_www(sock, path, st.st_size);
}
close(sock);
return 0;
}