From 4c790f844390f74a15cc9d155bfabc1da623f8a2 Mon Sep 17 00:00:00 2001
From: xgiovio <xgiovio@gmail.com>
Date: Sat, 31 May 2014 18:38:00 +0200
Subject: [PATCH] Implementato correttamente la select

---
 7.client-server-select (COMPLETE)/client      | Bin 0 -> 13704 bytes
 .../daytimecli.c                              |  78 ++++++++
 .../daytimecli.c~                             |   0
 .../daytimecli.o                              | Bin 0 -> 3960 bytes
 .../daytimesrv.c                              | 187 ++++++++++++++++++
 .../daytimesrv.c~                             |   0
 .../daytimesrv.o                              | Bin 0 -> 6512 bytes
 .../makefile                                  |   0
 .../makefile~                                 |   0
 7.client-server-select (COMPLETE)/readme      |   6 +
 .../readme~                                   |   0
 7.client-server-select (COMPLETE)/server      | Bin 0 -> 13805 bytes
 7.client-server-select/client                 | Bin 13563 -> 0 bytes
 7.client-server-select/daytimecli.c           |  47 -----
 7.client-server-select/daytimecli.o           | Bin 2880 -> 0 bytes
 7.client-server-select/daytimesrv.c           | 145 --------------
 7.client-server-select/daytimesrv.o           | Bin 3152 -> 0 bytes
 7.client-server-select/readme~                |   0
 7.client-server-select/server                 | Bin 13768 -> 0 bytes
 test/test3                                    | Bin 0 -> 8563 bytes
 test/test3.c                                  |  18 ++
 test/test3.c~                                 |  24 +++
 22 files changed, 313 insertions(+), 192 deletions(-)
 create mode 100755 7.client-server-select (COMPLETE)/client
 create mode 100644 7.client-server-select (COMPLETE)/daytimecli.c
 rename {7.client-server-select => 7.client-server-select (COMPLETE)}/daytimecli.c~ (100%)
 create mode 100644 7.client-server-select (COMPLETE)/daytimecli.o
 create mode 100644 7.client-server-select (COMPLETE)/daytimesrv.c
 rename {7.client-server-select => 7.client-server-select (COMPLETE)}/daytimesrv.c~ (100%)
 create mode 100644 7.client-server-select (COMPLETE)/daytimesrv.o
 rename {7.client-server-select => 7.client-server-select (COMPLETE)}/makefile (100%)
 rename {7.client-server-select => 7.client-server-select (COMPLETE)}/makefile~ (100%)
 create mode 100644 7.client-server-select (COMPLETE)/readme
 rename 7.client-server-select/readme => 7.client-server-select (COMPLETE)/readme~ (100%)
 create mode 100755 7.client-server-select (COMPLETE)/server
 delete mode 100755 7.client-server-select/client
 delete mode 100644 7.client-server-select/daytimecli.c
 delete mode 100644 7.client-server-select/daytimecli.o
 delete mode 100644 7.client-server-select/daytimesrv.c
 delete mode 100644 7.client-server-select/daytimesrv.o
 delete mode 100644 7.client-server-select/readme~
 delete mode 100755 7.client-server-select/server
 create mode 100755 test/test3
 create mode 100644 test/test3.c
 create mode 100644 test/test3.c~

diff --git a/7.client-server-select (COMPLETE)/client b/7.client-server-select (COMPLETE)/client
new file mode 100755
index 0000000000000000000000000000000000000000..b7ae7034a686df7538fc8a7af9147b94e58da925
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diff --git a/7.client-server-select (COMPLETE)/daytimecli.c b/7.client-server-select (COMPLETE)/daytimecli.c
new file mode 100644
index 0000000..4d88590
--- /dev/null
+++ b/7.client-server-select (COMPLETE)/daytimecli.c	
@@ -0,0 +1,78 @@
+
+
+#include	"../basic.h"
+
+typedef struct message {
+	char data[100];
+}t_message;
+
+void sigpipeaction (int signal){
+    
+    //fprintf(stderr, "Sigpipe catturato\n");
+    
+}
+
+int main(int argc, char **argv) {
+	
+//////////////////////////////////////////////////////////// SIGNALS
+
+///////SIGPIPE
+struct sigaction sigpipestructure;
+    sigpipestructure.sa_handler = sigpipeaction;
+    sigpipestructure.sa_flags = 0;
+    
+sigaction (SIGPIPE, &sigpipestructure, NULL);
+//////////////////////////////////////////////////////////// END SIGNALS
+
+	int			sockfd;
+	struct sockaddr_in	servaddr;
+
+	if (argc != 3){
+		printf("usage: daytimecli <indirizzoIP> <porta> \n");
+		exit(0);
+}
+        if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
+			printf("socket error\n");
+			exit(0);
+}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family = AF_INET;
+        servaddr.sin_port = htons(atoi(argv[2])); /* server port */ 
+
+        if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
+                printf("inet_pton error for %s\n", argv[1]);
+		exit(0);
+}
+	if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
+		printf("connect error\n");
+		exit(0);
+	}
+	
+	t_message m;
+	fprintf (stdout,"Send Text: ");
+	fscanf (stdin,"%999[^\n]%*c",m.data);
+	int written;
+	for (written = write (sockfd,&m,sizeof(m)); written <= 0;written = write (sockfd,&m,sizeof(m))){
+		if (errno == EINTR){continue;} else {break;}
+	}
+	int ridden;
+	if(written > 0){
+		for (ridden = read (sockfd,&m,sizeof(m)); ridden <= 0;ridden = read (sockfd,&m,sizeof(m))){
+			if (errno == EINTR){continue;} else {break;}
+		}
+		
+		if(ridden > 0){
+		
+			fprintf(stdout,"%s from server\n",m.data);
+		} else {
+			
+			fprintf(stdout,"can't read from server\n",m.data);
+		}
+		
+		
+	} else {
+		fprintf(stdout,"can't write to server\n",m.data);
+	}
+
+	exit(0);
+}
diff --git a/7.client-server-select/daytimecli.c~ b/7.client-server-select (COMPLETE)/daytimecli.c~
similarity index 100%
rename from 7.client-server-select/daytimecli.c~
rename to 7.client-server-select (COMPLETE)/daytimecli.c~
diff --git a/7.client-server-select (COMPLETE)/daytimecli.o b/7.client-server-select (COMPLETE)/daytimecli.o
new file mode 100644
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diff --git a/7.client-server-select (COMPLETE)/daytimesrv.c b/7.client-server-select (COMPLETE)/daytimesrv.c
new file mode 100644
index 0000000..001096f
--- /dev/null
+++ b/7.client-server-select (COMPLETE)/daytimesrv.c	
@@ -0,0 +1,187 @@
+#include	"../basic.h"
+#include	<time.h>
+
+void sigpipeaction (int signal){
+    
+    //fprintf(stderr, "Sigpipe catturato\n");
+    
+}
+
+typedef struct message {
+	char data[100];
+}t_message;
+
+
+int main(int argc, char **argv) {
+
+	int			listenfd, connfd, n;
+	struct sockaddr_in	servaddr;
+	struct sockaddr_in client_address_struct;
+	unsigned int client_address_struct_size = sizeof (client_address_struct);
+	
+
+//////////////////////////////////////////////////////////// SIGNALS
+
+///////SIGPIPE
+struct sigaction sigpipestructure;
+    sigpipestructure.sa_handler = sigpipeaction;
+    sigpipestructure.sa_flags = 0;
+    
+sigaction (SIGPIPE, &sigpipestructure, NULL);
+//////////////////////////////////////////////////////////// END SIGNALS
+		
+
+	if (argc != 2 ){
+		printf("usage: daytimesrv <porta>\n");
+		exit(0);
+	}
+	if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
+		printf("socket error\n");
+		exit(0);
+	}
+	bzero(&servaddr, sizeof(servaddr));
+	servaddr.sin_family      = AF_INET;
+	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);   /* wildcard address */
+	servaddr.sin_port        = htons(atoi(argv[1])); /* server port */
+
+	if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
+		printf("bind error\n"); exit(0);
+	}
+	if( listen(listenfd, 5) < 0 ){
+		printf("listen error\n");
+		exit(0);
+	}
+		
+	
+	
+	fd_set  fd_set_1;
+	FD_ZERO(&fd_set_1);
+	/*
+	void FD_CLR(int fd, fd_set *set);
+       int  FD_ISSET(int fd, fd_set *set);
+       void FD_SET(int fd, fd_set *set);
+       void FD_ZERO(fd_set *set);
+       */
+	
+	struct timeval timer;
+		timer.tv_sec = 99999999;
+		timer.tv_usec = 0;
+
+
+	int clients [FD_SETSIZE - 3];
+	int i;
+	for (i= 0;i< (FD_SETSIZE - 3);i++){
+		*(clients + i) = -1 ;
+	}
+	
+	//  FD_SET(fileno(stdin),&fd_set_1); // control stdin (fileno = 0)
+	
+	// add listenfd to monitor listen socket
+	FD_SET(listenfd,&fd_set_1);
+	fprintf(stdout,"Added listen socket %d to monitor\n",listenfd );
+	int max_fd = listenfd + 1;
+	
+	t_message m;
+	fd_set backup_set;
+
+	for ( ; ; ) {
+		
+		 
+		
+		fprintf(stdout,"waiting for non blocking fds\n");
+		int ready_fds_to_read = 0;
+		backup_set = fd_set_1;
+		for (ready_fds_to_read = select( max_fd, &fd_set_1, NULL,NULL,&timer);
+			     ready_fds_to_read <= 0 ;
+			     ready_fds_to_read = select( max_fd, &fd_set_1, NULL,NULL,&timer)){
+				
+				if (ready_fds_to_read == -1 && errno == EINTR ){ continue;}
+				if (ready_fds_to_read ==  0) {timer.tv_sec = 99999999;continue;}
+				// write code to inform client that server has an internal error
+				exit(0);
+				
+		}// wait for nonblocking fd in read set
+		fprintf(stdout,"ready: %d\n",ready_fds_to_read);
+		int flag = 0;
+		if (FD_ISSET(listenfd,&fd_set_1)){
+			ready_fds_to_read--;
+			for ( ; ; ) {
+				if( (connfd = accept(listenfd, (struct sockaddr *) &client_address_struct, &client_address_struct_size)) < 0)
+				{
+					if(errno == EINTR )
+						continue;
+					printf("accept error on listening socket\n");
+					flag = 1;
+					break;
+				}
+				break;
+			}
+			if (flag == 0){
+				
+				/// operations on connfd
+				int free = 0;
+				for (i= 0;i< (FD_SETSIZE - 3);i++){
+					if (*(clients + i) == -1) {*(clients + i) = connfd; free = 1; break;} 
+				}
+				if (free == 0){
+					shutdown (connfd, SHUT_RDWR);
+					fprintf(stdout,"Can't server %d. Too many connected clients\n",connfd );
+					
+				}else {
+					FD_SET(connfd,&backup_set);
+					max_fd = MAX(connfd + 1, max_fd);
+					fprintf(stdout,"Added connection socket %d to monitor\n",connfd );
+				}
+			}
+		}
+		
+		
+		// operations on other ready to read sockets in select
+
+		int ready_fd, ready_fd_index;
+		for (i= 0; i< (FD_SETSIZE - 3)  &&  ready_fds_to_read>0; i++){
+			
+			if (  *(clients + i) != -1     &&    FD_ISSET(*(clients + i),&fd_set_1)){
+				ready_fds_to_read--;
+				ready_fd = *(clients + i);
+				ready_fd_index = i;
+				
+				int ridden;
+				for (ridden = read (ready_fd,&m,sizeof(m)); ridden <= 0;ridden = read (ready_fd,&m,sizeof(m))){
+					if (errno == EINTR){continue;} else {break;}
+				}
+				
+				int written;
+				if (ridden > 0){
+					fprintf(stdout,"%s from socket id %d\n",m.data,ready_fd);
+					for (written = write (ready_fd,&m,sizeof(m)); written <= 0;written = write (ready_fd,&m,sizeof(m))){
+						if (errno == EINTR){continue;} else {break;}
+					}
+					
+				}
+				
+				// test if client has received the packet and exit();
+				//the client implementation should only make a read after the server
+				// write and exit
+				for (ridden = read (ready_fd,&m,sizeof(m)); ridden <= 0;ridden = read (ready_fd,&m,sizeof(m))){
+					if (errno == EINTR){continue;} else {break;}
+				}
+				if (ridden> 0) {fprintf(stdout,"client from socket id %d should be dead\n",ready_fd);}
+				
+				shutdown (ready_fd, SHUT_RDWR); // SHUT_RD - SHUT_WR
+				FD_CLR(ready_fd, &backup_set);
+				clients[ready_fd_index] = -1;
+				fprintf(stdout,"shutdown socket id %d\n",ready_fd);
+				
+				
+				
+				
+				
+			}
+					
+		}
+		fd_set_1 = backup_set;
+		
+	}
+	exit(0);
+}
\ No newline at end of file
diff --git a/7.client-server-select/daytimesrv.c~ b/7.client-server-select (COMPLETE)/daytimesrv.c~
similarity index 100%
rename from 7.client-server-select/daytimesrv.c~
rename to 7.client-server-select (COMPLETE)/daytimesrv.c~
diff --git a/7.client-server-select (COMPLETE)/daytimesrv.o b/7.client-server-select (COMPLETE)/daytimesrv.o
new file mode 100644
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diff --git a/7.client-server-select/makefile b/7.client-server-select (COMPLETE)/makefile
similarity index 100%
rename from 7.client-server-select/makefile
rename to 7.client-server-select (COMPLETE)/makefile
diff --git a/7.client-server-select/makefile~ b/7.client-server-select (COMPLETE)/makefile~
similarity index 100%
rename from 7.client-server-select/makefile~
rename to 7.client-server-select (COMPLETE)/makefile~
diff --git a/7.client-server-select (COMPLETE)/readme b/7.client-server-select (COMPLETE)/readme
new file mode 100644
index 0000000..556cad5
--- /dev/null
+++ b/7.client-server-select (COMPLETE)/readme	
@@ -0,0 +1,6 @@
+SERVER NON RICORSIVO CON UTILIZZO DI SELECT ED CHECK DI ERRORI
+
+il server attende una connessione dal client
+il client si connette al server e invia un messaggio
+il server lo legge e lo ritrasmette al client
+il client lo legge e poi termina
diff --git a/7.client-server-select/readme b/7.client-server-select (COMPLETE)/readme~
similarity index 100%
rename from 7.client-server-select/readme
rename to 7.client-server-select (COMPLETE)/readme~
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diff --git a/7.client-server-select/client b/7.client-server-select/client
deleted file mode 100755
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diff --git a/7.client-server-select/daytimecli.c b/7.client-server-select/daytimecli.c
deleted file mode 100644
index 37ce25d..0000000
--- a/7.client-server-select/daytimecli.c
+++ /dev/null
@@ -1,47 +0,0 @@
-
-
-#include	"../basic.h"
-
-typedef struct message {
-	char data[100];
-}t_message;
-
-int main(int argc, char **argv) {
-	int			sockfd;
-	struct sockaddr_in	servaddr;
-
-	if (argc != 3){
-		printf("usage: daytimecli <indirizzoIP> <porta> \n");
-		exit(0);
-}
-        if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
-			printf("socket error\n");
-			exit(0);
-}
-	bzero(&servaddr, sizeof(servaddr));
-	servaddr.sin_family = AF_INET;
-        servaddr.sin_port = htons(atoi(argv[2])); /* server port */ 
-
-        if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
-                printf("inet_pton error for %s\n", argv[1]);
-		exit(0);
-}
-	if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
-		printf("connect error\n");
-		exit(0);
-	}
-	
-	t_message m;
-	
-	fscanf(stdin)
-	
-
-	
-	
-	int ridden;
-	ridden = read (sockfd, &m,sizeof(m) );
-
-	
-	
-	exit(0);
-}
diff --git a/7.client-server-select/daytimecli.o b/7.client-server-select/daytimecli.o
deleted file mode 100644
index 1b032de2514852ec5ff632383b9f3e6f90441b3b..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 2880
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diff --git a/7.client-server-select/daytimesrv.c b/7.client-server-select/daytimesrv.c
deleted file mode 100644
index 3f47f3d..0000000
--- a/7.client-server-select/daytimesrv.c
+++ /dev/null
@@ -1,145 +0,0 @@
-
-
-#include	"../basic.h"
-#include	<time.h>
-
-void sigchldaction (int signal){
-
-	int status, pid;
-     
-   for (pid = waitpid(-1,&status,WNOHANG);pid > 0;pid = waitpid(-1,&status,WNOHANG)){
-   	// server: child terminated
-   }  
-
-
-}
-
-void sigpipeaction (int signal){
-    
-    //fprintf(stderr, "Sigpipe catturato\n");
-    
-}
-
-typedef struct message {
-	char data[100];
-}t_message;
-
-
-int main(int argc, char **argv) {
-	int			listenfd, connfd, n;
-	struct sockaddr_in	servaddr;
-	
-
-//////////////////////////////////////////////////////////// SIGNALS
-///////SIGCHLD
-struct sigaction sigchldstructure;
-       sigchldstructure.sa_handler = sigchldaction;
-       sigchldstructure.sa_flags = 0;
-          
-sigaction (SIGCHLD, &sigchldstructure, NULL);
-
-///////SIGPIPE
-struct sigaction sigpipestructure;
-    sigpipestructure.sa_handler = sigpipeaction;
-    sigpipestructure.sa_flags = 0;
-    
-sigaction (SIGPIPE, &sigpipestructure, NULL);
-//////////////////////////////////////////////////////////// END SIGNALS
-	
-
-
-	if (argc != 2 ){
-		printf("usage: daytimesrv <porta>\n");
-		exit(0);
-}
-	if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0){
-		printf("socket error\n");
-		exit(0);
-}
-	bzero(&servaddr, sizeof(servaddr));
-	servaddr.sin_family      = AF_INET;
-	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);   /* wildcard address */
-	servaddr.sin_port        = htons(atoi(argv[1])); /* server port */
-
-	if( (bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr))) < 0){
-		printf("bind error\n"); exit(0);
-}
-	if( listen(listenfd, 5) < 0 )
-		{ printf("listen error\n");
-		  exit(0);
-		}
-		
-	
-	
-	fd_set  fd_set_1;
-	FD_ZERO(&fd_set_1);
-	/*
-	void FD_CLR(int fd, fd_set *set);
-       int  FD_ISSET(int fd, fd_set *set);
-       void FD_SET(int fd, fd_set *set);
-       void FD_ZERO(fd_set *set);
-       */
-	
-	struct timeval timer;
-		timer.tv_sec = 99999999;
-		timer.tv_usec = 0;
-
-
-	
-	for ( ; ; ) {
-		
-		
-		if( (connfd = accept(listenfd, (struct sockaddr *) &client_address_struct, &client_address_struct_size)) < 0)
-		{
-			if(errno == EINTR || errno==ECONNABORTED)
-				continue;
-			printf("accept error\n");
-			exit(1);
-		}
-		
-		int split = fork();
-			
-		if ( split < 0) {
-			printf("fork for iterative server failed\n");
-			exit(-1);
-		}
-		
-		if (split == 0){
-			close(listenfd);
-		
-
-			t_message m;
-			int ready_fds_to_read = 0;
-			
-			FD_set(connfd,&fd_set_1);
-			
-			for (ready_fds_to_read = select( connfd + 1, fd_set_1, NULL,NULL,&timer);
-			     ready_fds_to_read <= 0 ;
-			     ready_fds_to_read = select( connfd + 1, fd_set_1, NULL,NULL,&timer)){
-				
-				if (ready_fds_to_read == -1 && errno == EINTR ){ continue;}
-				if (ready_fds_to_read ==  0) {timer.tv_sec = 99999999;continue;}
-				// write code to inform client that server has an internal error
-				exit(0);
-				
-			}// wait for nonblocking fd in read set
-			
-			 int ridden;
-			 if( FD_ISSET(connfd, fd_set_1) ){
-				for (ridden = read (connfd,&m,sizeof(m)); ridden <= 0;ridden = read (connfd,&m,sizeof(m))){
-					if (errno == EINTR){continue;} else {exit(0);}
-				}
-				
-				fprint(stdout,%s,m.data);
-				
-				
-			 }
-			 
-			 exit(0);
-		
-		
-		}else {
-			close(connfd);
-		}
-	}
-}
diff --git a/7.client-server-select/daytimesrv.o b/7.client-server-select/daytimesrv.o
deleted file mode 100644
index d378ae74a6a6fb403bc32c00a203dd0e5c2af67e..0000000000000000000000000000000000000000
GIT binary patch
literal 0
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diff --git a/7.client-server-select/readme~ b/7.client-server-select/readme~
deleted file mode 100644
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diff --git a/7.client-server-select/server b/7.client-server-select/server
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GIT binary patch
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diff --git a/test/test3.c b/test/test3.c
new file mode 100644
index 0000000..e062758
--- /dev/null
+++ b/test/test3.c
@@ -0,0 +1,18 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+
+int main (int index, char** in_data){
+     
+fprintf(stdout, "%d\n",fileno(stdout));
+fprintf(stdout, "%d\n",fileno(stdin));
+fprintf(stdout, "%d\n",fileno(stderr));
+     
+     
+     return 0;
+}
diff --git a/test/test3.c~ b/test/test3.c~
new file mode 100644
index 0000000..802abaa
--- /dev/null
+++ b/test/test3.c~
@@ -0,0 +1,24 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+
+int main (int index, char** in_data){
+     
+char a [100];
+char b;
+char c [100];
+char d [100];
+sprintf(d,"eeee");
+sprintf(a,"alfred       ");
+sscanf (a,"%s%s",c,d);
+fprintf(stdout,"%s\n",c);
+fprintf(stdout,"%s\n",d);
+     
+     
+     return 0;
+}