server.c

在linux下创建了客户端和服务端（c/s）

/******* 服务器程序  (server.c) ************/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <sys/stat.h>
#include <fcntl.h>

#define MAXSIZE 2048
/*********************************************************
*
*    函数名称：   GetFileName
*    功能描述：   根据文件路径获得文件名称
*    入口参数：   char cArr[]文件路径,int len文件路径长度
*    出口参数：   
*    调用函数：     
*    流程描述：
*          
*
***********************************************************/
char *GetFileName(char cArr[],int len)
{
	int i = 0;
	int j = 0;
	int iCount = 0;
	int iCount2 = 0;
	char cTemArr[50] = {0};

	for ( i=0; i<len; i++)
	{
		if ( '/' == cArr[i])
		{
			iCount++;
		}
	}
	if ( 0 != iCount )
	{
		for ( i=0; i<len; i++)
		{
			if ( '/' == cArr[i])
			{
				iCount2++;
			}
			if ( iCount2 == iCount )
			{
			 	if ( i != len-1)
			 	{
					cTemArr[j] = cArr[i+1];
					j++;
				}		
			}
		}
		cTemArr[j-1] = '\0';
		memset(cArr,0,sizeof(cArr));
		memcpy(cArr,cTemArr,(j-1));
		cArr[j-1] = '\0';
	}
	return cArr;
}

/*********************************************************
*
*    函数名称：   GetXMLParser
*    功能描述：   解析XML格式字符串获得对应节点的内容
*    入口参数：   char *begin, char *end, const char *pstr,char *dest, int n
*    出口参数：   
*    调用函数：     
*    流程描述：
*          1、解析xml格式字符串
*
***********************************************************/
void GetXMLParser(char *begin, char *end, const char *pstr,char *dest, int n)
{
	char *head = NULL;
	char *tail = NULL;
	char *content = NULL;
	head = strstr(pstr,begin);
	tail = strstr(pstr,end);
	memcpy(dest, head + n, tail - head - n);
}


int main(int argc, char *argv[])
{
	FILE *fp;
	
        int sockfd,new_fd;
        struct sockaddr_in server_addr;
        struct sockaddr_in client_addr;
        int sin_size,portnumber;
        char mesg[]="Upload successful!\n";
        char cLocaDir[60];
        
        int nbytes;
        char buffer[MAXSIZE];
	int iAddrLen = sizeof(struct sockaddr);
	char cFileName[50] = {0};
	char *cpFileName = NULL;
	char cFile[MAXSIZE] = {0};	
	int len = 0;
	long lFileLen = 0;
	char cFileLen[10] = {0};
	int w_size = 0;
	int r_size = 0;
	int fd ;
	
	int i = 0;
	
	
        if(argc!=2)
        {
                fprintf(stderr,"Usage:%s portnumber\a\n",argv[0]);
                exit(1);
        }

        if((portnumber=atoi(argv[1]))<0)
        {
                fprintf(stderr,"Usage:%s portnumber\a\n",argv[0]);
                exit(1);
        }

        /* 服务器端开始建立socket描述符 */
        if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)  
        {
                fprintf(stderr,"Socket error:%s\n\a",strerror(errno));
                exit(1);
        }

        /* 服务器端填充 sockaddr结构  */ 
        bzero(&server_addr,sizeof(struct sockaddr_in));
        server_addr.sin_family=AF_INET;
        server_addr.sin_addr.s_addr=htonl(INADDR_ANY);
        server_addr.sin_port=htons(portnumber);

        /* 捆绑sockfd描述符  */ 
        if(bind(sockfd,(struct sockaddr *)(&server_addr),sizeof(struct sockaddr))==-1)
        {
                fprintf(stderr,"Bind error:%s\n\a",strerror(errno));
                exit(1);
        }

        /* 监听sockfd描述符  */
        if(listen(sockfd,5)==-1)
        {
                fprintf(stderr,"Listen error:%s\n\a",strerror(errno));
                exit(1);
        }

        while(1)
        {
                /* 服务器阻塞,直到客户程序建立连接  */
                sin_size=sizeof(struct sockaddr_in);
                if((new_fd=accept(sockfd,(struct sockaddr *)(&client_addr),&sin_size))==-1)
                {
                        fprintf(stderr,"Accept error:%s\n\a",strerror(errno));
                        exit(1);
                }
                
		//接收SOCKET数据
		bzero(buffer,sizeof(buffer));
		if((nbytes=read(new_fd,buffer,sizeof(buffer)))==-1)
	        {
	                fprintf(stderr,"Read Error:%s\n",strerror(errno));
	                exit(1);
	        }
	        
	        //获得文件路径
	        bzero(cFileName,sizeof(cFileName));
		GetXMLParser("<filePath>","</filePath>",buffer,cFileName,10);
		
		//获得文件名称
		cpFileName = GetFileName(cFileName,sizeof(cFileName));

		//获得文件大小
		bzero(cFileLen,sizeof(cFileLen));
		GetXMLParser("<iFileLength>","</iFileLength>",buffer,cFileLen,13);
		lFileLen = atol(cFileLen);
			
		//创建与上传文件同名的文件并放于upload下
		bzero(cLocaDir,sizeof(cLocaDir));
		sprintf(cLocaDir,"upload/%s",cpFileName);
fprintf(stderr,"cLocaDir.%s.\n",cLocaDir);
		fd = open(cLocaDir, O_WRONLY|O_APPEND|O_CREAT|O_TRUNC,S_IRUSR);
			
		if ( -1 == fd )
		{
			fprintf(stderr,"%s file dosen't opn.",cLocaDir);
			exit(1);
		}
		
fprintf(stderr,"len.%d,cLocaDir.%s.\n",lFileLen,cLocaDir);
			
fprintf(stderr,"lFileLen.%d\n",lFileLen);
		
		//读取文件内容
		bzero(buffer,sizeof(buffer));	        
		while ( 1 )
		{	
			if ( 0 == lFileLen )
			{
				break;
			}
							
			bzero(buffer,sizeof(buffer));	
			r_size = read(new_fd,buffer,sizeof(buffer));
//fprintf(stderr,"r_size%d.%d\n",++i,r_size);
			if (  -1 == r_size )
			{
				fprintf(stderr,"Read Error:%s\n",strerror(errno));
				break;
			}
			//将文件内容写入所创建的文件
			w_size = write(fd,buffer,r_size);
fprintf(stderr,"w_size%d.%d\n",++i,w_size);
			if ( -1 == w_size )
			{
				fprintf(stderr,"Write Error:%s\n",strerror(errno));
				break;
			}
			
			lFileLen -= (long)w_size;
//fprintf(stderr,"lFileLen.%d\n",lFileLen);			
		}
		
		close(fd);
		
                fprintf(stderr,"Server get connection from %s\n",
                inet_ntoa(client_addr.sin_addr));
                
                if(write(new_fd,mesg,strlen(mesg))==-1)
                {
                        fprintf(stderr,"Write Error:%s\n",strerror(errno));
                        exit(1);
                }
                
                /* 这个通讯已经结束     */
                close(new_fd);
                /* 循环下一个     */  
        }
        close(sockfd);
        exit(0);
}