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Title Network: File manipulating program
Author sam
Author Email sa_jal1982 [at] rediffmail.com
Description One file from server is copied and edited RESULTING in two files. Those two files are sent to client, which are further edited resulting
in four files.
Category C » Beginners / Lab Assignments
Hits 368599
Code Select and Copy the Code
Code : //------------------------SERVER---------------------------------- //server: opens a file and write into another file #include<stdio.h> #include<sys/types.h> #include<sys/socket.h> #include<netinet/in.h> #include<stdlib.h> #include<arpa/inet.h> #include<unistd.h> #define SIZE 2000 #define PORT 11 int main(int argc,char *argv[]) { FILE *X, *Y; int sockfd, client_sockfd; unsigned int nt, len; struct sockaddr_in serid, clid; char x[5],y[5], fd[SIZE], buf[SIZE]; int g,siz = 2000; char ch,s[siz],fn[siz],con[siz]; sockfd = socket(AF_INET, SOCK_STREAM, 0); printf("sock created "); //////// file1 printf(" enter the file name : name = "); scanf("%s",x); X=fopen(x,"r"); if(X == NULL) { printf(" file open error "); exit(0); } fread(con,(size_t)sizeof(char),(size_t)SIZE , X); printf(" X = %s",con); ///////////file2 printf(" ______________________________________________"); printf(" enter the file name:-"); scanf("%s",argv[0]); // Y=fopen("y.t","a+"); strcpy(y,argv[0]); Y=fopen(y,"w"); if( Y == NULL) { puts(" cannot open the file"); exit(0); } fputs(con,Y); char text[20];//=" I I Sc-Bangalore "; printf(" enter the text to edit: text = "); scanf(" %s",text); // gets(text); fputs(text,Y); fclose(Y); Y=fopen(y,"a+"); fread(s,(size_t)sizeof(char),(size_t)SIZE , Y); printf(" Y = %s ",s); fclose(X); fclose(Y); ////////////////// sockets serid.sin_family = AF_INET; serid.sin_addr.s_addr =inet_addr("10.32.21.33");//INADDR_ANY;//"10.32.21.33"; serid.sin_port=htons(PORT);//"80"; printf(" server "); if((bind(sockfd,(struct sockaddr *) &serid, sizeof(struct sockaddr_in))) < 0 ) { printf("bind error "); exit(0); } //////// specify queue listen(sockfd, 5); while(1) { len = sizeof(struct sockaddr_in); //printf("waiting"); if((client_sockfd = accept(sockfd,(struct sockaddr *) &clid, &len) ) < 0 ) { printf(" accept error "); exit(0); } 73,0-1 72% //////////file1 write(client_sockfd,x,sizeof(con)); read(client_sockfd,buf,sizeof(buf)); X=fopen(x,"r"); if(X == NULL) { printf(" file open error "); exit(0); } fread(con,(size_t)sizeof(char),(size_t)SIZE , X); write(client_sockfd,con,sizeof(con)); fclose(X); //////file2 read(client_sockfd,buf,sizeof(buf)); write(client_sockfd,y,sizeof(s)); read(client_sockfd,buf,sizeof(buf)); Y=fopen(x,"r"); fread(s,(size_t)sizeof(char),(size_t)SIZE , Y); write(client_sockfd,s,sizeof(s)); //fclose(X); fclose(Y); close(client_sockfd); } } //-------------------------CLIENT---------------------------------- //client reads two files from server and edit it saves in other files as a.t and b.t #include<stdio.h> #include<sys/types.h> #include<sys/socket.h> #include<netinet/in.h> #define SIZE 2000 #define PORT 1111 //char buf[SIZE]; int main(int argc, char *argv[]) { int sockfd; int t,nt,siz=2000; struct sockaddr_in serv_addr; //unsigned int SIZE =1000; char buf[SIZE],buf2[SIZE]; unsigned int filesize=100; char fd[siz],new[siz],edt[siz],var[siz],var2[siz]; char fd2[siz],new2[siz],edt2[siz]; //unsigned int siz=5; char fn[5]; printf(" ---client-- "); sockfd = socket(AF_INET, SOCK_STREAM, 0); serv_addr.sin_family=AF_INET; serv_addr.sin_addr.s_addr=inet_addr("10.32.21.33");//INADDR_ANY;//"10.32.2 1.33"; serv_addr.sin_port=htons(PORT);//"80"; connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)); ///////////////////////////first file///////////////////////////////////////////////// read(sockfd, buf,sizeof(buf)); write(1,buf,7); write(sockfd,buf,sizeof(buf)); read(sockfd,var,sizeof(var)); FILE *fdd = fopen(buf,"w"); if(fdd == NULL){ printf(" file open error "); exit(0); } //printf(" %s",var); fputs(var, fdd); fclose(fdd); fdd=fopen(buf,"r"); nt=fread(fd, (size_t)sizeof(char),(size_t)SIZE , fdd); printf(" %s=%s ",buf,fd); printf(" ----------------------"); FILE *NEW_X=fopen("a.t","w"); if(NEW_X == NULL) { printf(" can't open the file "); exit(0); } fputs(fd,NEW_X); // fclose(NEW_X); char s[20]; printf(" enter the text to add: text= "); scanf("%s",s); fputs(s,NEW_X); fgets(var,50,NEW_X); fclose(NEW_X); NEW_X=fopen("a.t","a+"); t=fread(new, (size_t)sizeof(char),(size_t)SIZE ,NEW_X); printf(" edited=%s ",new); ///////////////////////////second file //////////////////////////////////////////////////// printf(" --*****************************---- "); printf(" Request for second file "); scanf("%s",fn); //t=strlen(fn); printf(" ----************************--- "); write(sockfd,fn,sizeof(fn)); read(sockfd, buf2,sizeof(buf2)); write(1, buf2,5);//sizeof(buf2)); write(sockfd,buf2,sizeof(buf2)); read(sockfd,var2,sizeof(var2)); FILE *f2 = fopen(buf2,"w"); if(f2 == NULL){ printf(" file open error "); exit(0); } fputs(var2,f2); fclose(f2); f2=fopen(buf2,"r"); fread(fd2, (size_t)sizeof(char),(size_t)SIZE , f2); printf(" %s=%s ",buf2,fd2); printf(" --------------------------------------"); FILE *f3=fopen("b.t","w"); if(f3 == NULL) { printf(" can't open the file "); exit(0); } // t=fread(new2, (size_t)sizeof(char),(size_t)SIZE ,f3); // printf(" new=%s ",new2); fputs(fd2,f3); char s2[20];//=" UBDTCE"; printf(" enter the text to add: text = "); scanf("%s",s2); fputs(s2,f3); fclose(f3); f3=fopen("b.t","a+"); fread(edt2, (size_t)sizeof(char), (size_t)SIZE ,f3); printf(" edited = %s ",edt2); // write(1,edt,100);//sizeof(fd)); fclose(NEW_X); fclose(fdd); fclose(f3); fclose(f2); close(sockfd); //exit(0); } 2,85 Top

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