quest/src2/client.c

121 lines
2.4 KiB
C
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <netinet/in.h>
#include <string.h>
int main(int argc, char *argv[]) {
int sockfd, portno, n;
struct sockaddr_in serv_addr;
struct hostent *server;
char buffer[256];
char commandcode;
if (argc < 2) {
fprintf(stderr,"usage %s command\n", argv[0]);
exit(0);
}
portno = 8101;
/* Create a socket point */
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("ERROR opening socket");
exit(1);
}
server = gethostbyname("localhost");
if (server == NULL) {
fprintf(stderr,"ERROR, no such host\n");
exit(0);
}
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
bcopy((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, server->h_length);
serv_addr.sin_port = htons(portno);
/* Now connect to the server */
if (connect(sockfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) < 0) {
perror("ERROR connecting");
exit(1);
}
if (!strcmp(argv[1], "time")) {
commandcode = 1;
} else if (!strcmp(argv[1], "start")) {
commandcode = 2;
} else if (!strcmp(argv[1], "stop")) {
commandcode = 3;
} else if (!strcmp(argv[1], "kill")) {
commandcode = 4;
} else if (!strcmp(argv[1], "split")) {
commandcode = 5;
} else if (!strcmp(argv[1], "skip")) {
commandcode = 6;
} else if (!strcmp(argv[1], "pause")) {
commandcode = 7;
} else if (!strcmp(argv[1], "resume")) {
commandcode = 8;
} else if (!strcmp(argv[1], "undo")) {
commandcode = 9;
} else if (!strcmp(argv[1], "redo")) {
commandcode = 10;
} else if (!strcmp(argv[1], "foreground")) {
commandcode = 11;
} else if (!strcmp(argv[1], "background")) {
commandcode = 12;
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} else if (!strcmp(argv[1], "save")) {
commandcode = 13;
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} else {
perror("No valid command given");
exit(1);
}
/* Send message to the server */
n = write(sockfd, &commandcode, 1);
if (n < 0) {
perror("ERROR writing to socket");
exit(1);
}
/* Now read server response */
//bzero(buffer,256);
//read an int response
if (commandcode < 11) {
int x = -1;
n = read(sockfd, &x, sizeof(int));
if (n < 0) {
perror("ERROR reading from socket");
exit(1);
}
if (x != -1)
printf("%d\n",x);
}
//read a string response
else {
bzero(buffer,256);
n = read(sockfd, &buffer, 255);
if (n < 0) {
perror("ERROR reading from socket");
exit(1);
}
if (buffer != NULL)
printf("%s", buffer);
}
return 0;
}