Startpunkten

2026-03-05 13:31:50 +01:00
commit 86a20ae0e1
16 changed files with 1305 additions and 0 deletions
--- a/Lab4/dbclient.c
+++ b/Lab4/dbclient.c
@@ -0,0 +1,146 @@
+
+#include "db.h"
+
+void addNumber(msg *myMsg){
+	char nr[NRSIZE], name[NAMESIZE];
+	printf("ADD \n============\n");
+	printf("Enter number: ");	gets(nr);
+	printf("Enter name: ");		gets(name);
+	myMsg->op = ADD;
+	strcpy(myMsg->nr, nr);
+   strcpy(myMsg->name, name);
+}
+
+void delNumber(msg *myMsg) {
+  	char nr[NRSIZE];
+	printf("Delete \n=============\n");
+	printf("Enter number: "); gets(nr);
+	myMsg->op = DEL;
+	strcpy(myMsg->nr, nr);
+	strcpy(myMsg->name, "");
+}
+
+void findNumber(msg *myMsg) {
+  	char name[NAMESIZE];
+	printf("Find \n=============\n");
+	printf("Enter name: "); gets(name);
+	myMsg->op = NR;
+	strcpy(myMsg->nr, "");
+	strcpy(myMsg->name, name);
+}
+
+void findName(msg *myMsg) {
+  	char nr[NRSIZE];
+	printf("Find \n=============\n");
+	printf("Enter number: "); gets(nr);
+	myMsg->op = NAME;
+	strcpy(myMsg->nr, nr);
+	strcpy(myMsg->name, "");
+}
+
+void getOut(msg *myMsg, int sock) {
+	printf("Quitting...\n===============\n");
+	myMsg->op = EXIT;
+	write(sock, myMsg, sizeof(myMsg));		
+	close(sock);
+	exit(0);
+}
+
+void printMsg(msg myMsg) {
+	printf("myMsg.nr = %s\n", myMsg.nr);
+	printf("myMsg.name = %s\n", myMsg.name);
+	sleep(2);
+}
+
+void menu(msg *myMsg, int sock) {
+	char choice[5];
+	char val;
+
+	system("clear");
+	
+	puts("\nWelcome to IPC, InternalPhonenumberCatalogue");
+	puts("============================================\n\n");
+
+	puts("1 - Add a number\n");
+   puts("2 - Delete a number\n");
+	puts("3 - Find a number\n");
+	puts("4 - Find a name\n");	
+   puts("5 - Exit\n\n");
+  	puts("Enter your choice: ");
+
+   fgets(choice, sizeof(choice), stdin);
+	
+	switch(choice[0]){
+		case '1':	addNumber(myMsg);
+						break;
+		case '2':	delNumber(myMsg);
+						break;
+		case '3':	findNumber(myMsg);
+						break;
+		case '4':	findName(myMsg);
+						break;
+		case '5':	getOut(myMsg, sock);
+						break;
+					
+		default :	puts("Try again <1-4 or 5>\n\n");
+						sleep(1);
+						break;
+	}
+}
+
+main(int argc, char *argv[]) {
+	char *remhost;
+	u_short remport;
+	int sock;
+	struct sockaddr_in remote;
+	struct hostent *h;
+	msg myMsg;
+
+	if (argc != 3) {
+		fprintf(stderr,"Usage: dbclient <host> <port>\n");
+		exit(1);
+	}
+	remhost = argv[1];
+	remport = atoi(argv[2]);
+
+	/* Create the socket. */
+	if((sock = socket( AF_INET, SOCK_STREAM, 0 )) < 0 ) {
+		perror("dbclient:socket");
+		exit(1);
+	}
+
+	bzero((char *) &remote, sizeof(remote));
+	remote.sin_family = AF_INET;
+	if((h = gethostbyname(remhost)) == NULL) {
+		perror("dbclient:gethostbyname");
+		exit(1);
+	}
+	bcopy((char *)h->h_addr, (char *)&remote.sin_addr, h->h_length);
+	remote.sin_port = htons(remport);
+
+	if(connect(sock, (struct sockaddr *)&remote, sizeof(remote)) < 0) {
+	perror("dbclient:connect");
+		exit(1);
+	}
+
+	for(;;) {
+		menu(&myMsg, sock);
+		write(sock, &myMsg, sizeof(myMsg));
+		read(sock, &myMsg, sizeof(myMsg));/*lyssna efter svar från servern*/
+		
+		if(myMsg.op == NACK) {
+			puts("Could not execute your request, please try again");
+		}
+		else if(myMsg.op == ACK) {
+			printf("Operation executed.\n");
+		}
+		else if(myMsg.op == PRN) {
+			printMsg(myMsg);
+		}
+		sleep(2);
+	}	
+	close(sock);
+}
+
+
+