Completato esercizio di gestioen database client-server. Archivio.txt e comandi aggiungi nome voto,verifica nome.

11.client-server-exam-database (COMPLETE)/daytimecli.c

@@ -0,0 +1,136 @@
+#include    "../basic.h"
+#include    <unistd.h>
+
+void sigpipeaction (int signal){
+    
+    
+    //fprintf(stderr, "Sigpipe catturato\n");
+    
+    
+}
+
+
+typedef struct message {
+	char data [50];
+	char nome [50];
+	char voto [50];
+}t_message;
+
+int main(int argc, char **argv) {
+    
+    
+    
+    struct sigaction sigpipestructure;
+    sigpipestructure.sa_handler = sigpipeaction;
+    sigpipestructure.sa_flags = 0;
+    
+    sigaction (SIGPIPE, &sigpipestructure, NULL);
+    
+    
+    
+    
+    
+	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);
+	}
+	
+	
+	int ridden;
+	int written;
+	t_message m;
+
+    
+
+        //// welcome from server - first message
+		for (ridden = read (sockfd,&m,sizeof(m)); ridden <= 0;ridden = read (sockfd,&m,sizeof(m))){
+			if (errno == EINTR){continue;} else {exit(0);}
+		}
+	fprintf(stdout,"Server: %s\n",m.data);// answer from server
+
+	char  line [1000];
+	char  line_data [50];
+	char  line_nome [50];
+	char  line_voto [50];
+	for(; ;){
+		fprintf(stdout, "Inserisci comando: ");
+		fscanf (stdin,"%999[^\n]%*c",line);
+		sscanf (line, "%s", line_data);
+		if (strcmp("AGGIUNGI",line_data) == 0 || strcmp("VERIFICA",line_data) == 0){
+			
+			if (strcmp("AGGIUNGI",line_data) == 0 ){
+				sprintf(m.data,"AGGIUNGI");
+				sprintf(line_nome,"def");
+				sprintf(line_voto,"def");
+				
+				sscanf (line, "%*s %s %s", line_nome,line_voto);
+				if (strcmp(line_nome,"def") == 0 || strcmp(line_voto,"def") == 0){
+					fprintf(stdout,"Comando invalido\n");
+					continue;
+				}else{
+					sprintf(m.nome,"%s",line_nome);
+					sprintf(m.voto,"%s",line_voto);
+				}
+				
+			} else {
+				sprintf(m.data,"VERIFICA");
+				sprintf(line_nome,"def");
+				sscanf (line, "%*s %s ", line_nome);
+				if (strcmp(line_nome,"def") == 0 ){
+					fprintf(stdout,"Comando invalido\n");
+					continue;
+				}else{
+					sprintf(m.nome,"%s",line_nome);
+				}
+
+			}
+			
+			for (written = write (sockfd, &m, sizeof (m)  ); written == -1; written = write (sockfd, &m, sizeof (m)) ){
+				if (errno == EINTR){continue;} else {exit(0);}
+			}
+			for (ridden = read (sockfd,&m,sizeof(m)); ridden <= 0;ridden = read (sockfd,&m,sizeof(m))){
+				if (errno == EINTR){continue;} else {exit(0);}
+			}
+			fprintf(stdout,"Server: %s\n",m.data);// answer from server
+			
+			
+		} else {
+			sprintf(m.data,"Bye");
+			
+			for (written = write (sockfd, &m, sizeof (m)  ); written == -1; written = write (sockfd, &m, sizeof (m)) ){
+				if (errno == EINTR){continue;} else {exit(0);}
+			}
+			
+			for (ridden = read (sockfd,&m,sizeof(m)); ridden <= 0;ridden = read (sockfd,&m,sizeof(m))){
+				if (errno == EINTR){continue;} else {exit(0);}
+			}	
+			
+			fprintf(stdout,"Server: %s\n",m.data);// answer from server
+			break;
+			
+		}
+	}
+	
+
+	
+	exit(0);
+}