Files are now written with the contents of the stream

src/wstationd.c

@@ -14,6 +14,8 @@
 #include <getopt.h>
 #include "wstationd.h"
 
+#define BUFFERSIZE 4096
+
 
 static char *exec_name;
 
@@ -42,10 +44,12 @@ int main(int argc, char *argv[])
 
 	int port = 10800; // Default port
 	uint32_t address = INADDR_ANY; // Default listen address
-	int sockflag = 1, sockfd = 0, connfd = 0;
+	int connflag, sockflag = 1;
+	int sockfd = 0, connfd = 0;
 	struct sockaddr_in sock, client;
 	socklen_t client_sz = sizeof(client);
-	char timebuff[15], fnbuff[35];
+	char connbuff[BUFFERSIZE], timebuff[15], fnbuff[35];
+	ssize_t connbuff_sz;
 
 	time_t timeraw;
 	struct tm* timeptr;
@@ -155,6 +159,25 @@ int main(int argc, char *argv[])
 						fprintf(stderr, "%s: accept failed - %s\n",
 							exec_name, strerror(errno)
 						);
+						continue;
+					}
+
+					// Get current flags before setting nonblock
+					if((connflag = fcntl(connfd, F_GETFL)) == -1){
+						fprintf(stderr, "%s: cannot get connection flags - %s\n",
+							exec_name, strerror(errno)
+						);
+						close(connfd);
+						continue;
+					}
+
+					// Set nonblocking on socket
+					if(fcntl(connfd, F_SETFL, connflag | O_NONBLOCK) == -1){
+						fprintf(stderr, "%s: cannot set connection flags - %s\n",
+							exec_name, strerror(errno)
+						);
+						close(connfd);
+						continue;
 					}
 
 					// Collect the time of the connection, process it into 
@@ -170,8 +193,9 @@ int main(int argc, char *argv[])
 						timebuff, inet_ntoa(client.sin_addr)
 					);
 
-					if((writefds[i] = open(fnbuff, O_WRONLY | O_CREAT, 0644)) == -1){
-						writefds[i] = 0;
+					// Open a file to dump our data to
+					if((writefds[connfd] = open(fnbuff, O_WRONLY | O_CREAT, 0644)) == -1){
+						writefds[connfd] = 0;
 						fprintf(stderr, "%s: cannot open - %s\n",
 							exec_name, strerror(errno)
 						);
@@ -180,16 +204,36 @@ int main(int argc, char *argv[])
 					} else {
 						FD_SET(connfd, &masterfds);
 					}
-					connfd = 0;
 
 				// Read from existing connections
 				} else {
-					if(writefds[i] != 0){
+					// Do the read
+					connbuff_sz = recv(i, connbuff, BUFFERSIZE, 0);
+					if(connbuff_sz > 0){
+						// If the read fails, throw an error, and set the
+						// buffer size to 0, which forces a disconnect.
+						if(write(writefds[i], connbuff, connbuff_sz) == -1){
+							fprintf(stderr, "%s: file write error - %s\n",
+								exec_name, strerror(errno)
+							);
+							connbuff_sz = 0;
+						}
+					}
+
+					// If the buffer is empty (which with select(), will only happen
+					// on disconnect, disconnect and cleanup.
+					if(connbuff_sz == 0){
 						close(writefds[i]);
 						writefds[i] = 0;
-					}
 						FD_CLR(i, &masterfds);
 						close(i);
+					} else if(connbuff_sz == -1){
+						fprintf(stderr, "%s: recv error - %s\n",
+							exec_name, strerror(errno)
+						);
+						FD_CLR(i, &masterfds);
+						close(i);
+					}
 				}
 			}
 		}