ud-fingerserv next generation; not done yet

diff --git a/ud-fingerserv2.c b/ud-fingerserv2.c
new file mode 100644 (file)
index 0000000..c13fa5e
--- /dev/null
+++ b/ud-fingerserv2.c
@@ -0,0 +1,133 @@
+/* $Id# */
+/* compile: gcc -Wall -o ud-fingerserv2 ud-fingerserv2.c */
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <signal.h>
+#include <unistd.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#define PROGNAME         "ud-fingerserv"
+#define VERSION          "0.90"
+#define PROGDATE         "1999/12/10"
+
+#define FINGERPORT       79
+#define TIMEOUT          600 /* seconds */
+#define PERROR(ctx)      do { perror(ctx); exit(1); } while (0);
+#define DEFAULTLOGFILE   "/var/log/ud-fingerserv.log"
+
+#define OPT_INETD     1
+#define OPT_LOGSCR    (1 << 1)
+
+static FILE *g_logfs = NULL;
+static char *g_logfn = NULL;
+static int g_options = 0;
+
+int processcxn(int, struct sockaddr_in *);
+void logf(char *fmt, ...);
+void cleanup(void);
+void timeout(void);
+void usage(void);
+void sendhelp(void);
+
+/* ********************************************************************** */
+
+int processcxn(int s, struct sockaddr_in *rmtaddr)
+{
+    printf("connected\n");
+    return 0;
+}
+
+void sendhelp(void)
+{
+}
+
+void logf(char *fmt, ...)
+{
+    va_list ap;
+    time_t t;
+    char logline[1024];
+    char *ts;
+   
+    t = time(NULL);
+    ts = ctime(&t);
+    ts[strlen(ts)-1] = 0; /* remove stupid newline */
+    
+    if (g_logfs == NULL) {
+        if (g_logfn == NULL) g_logfn = DEFAULTLOGFILE;
+        if ((g_logfs = fopen(g_logfn, "a")) == NULL && !(g_options & OPT_LOGSCR)) PERROR("logf");        
+    }   
+   
+    vsnprintf(logline, sizeof(logline), fmt, ap);
+    if (g_logfs) {
+        fprintf(g_logfs, "[%s] " PROGNAME ": %s\n", ts, logline);
+        fflush(g_logfs);
+    }
+       
+    if (g_options & OPT_LOGSCR) printf("[%s] " PROGNAME ": %s\n", ts, logline);
+}
+
+void cleanup(void)
+{
+    if (g_logfs) fclose(g_logfs);
+}
+
+void usage(void)
+{
+    fprintf(stderr, "ud-fingerserv " VERSION " " PROGDATE "\n");
+    fprintf(stderr, "\t(c) 1999 Randolph Chung <tausq@debian.org>. Released under the GPL\n");
+    fprintf(stderr, "\tThe following options are recognized:\n");
+    fprintf(stderr, "\t\t-h : this help text\n");
+    fprintf(stderr, "\t\t-i : run in inetd mode; otherwise runs in standalone mode\n");
+    fprintf(stderr, "\t\t-v : logs messages to stdout in addition to log file\n");
+    fprintf(stderr, "\t\t-l <file> : use <file> as the log file, instead of " DEFAULTLOGFILE "\n"); 
+    exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+    int ls, as;
+    int r;
+    struct sockaddr_in myaddr, rmtaddr;
+    socklen_t addrlen = sizeof(struct sockaddr_in);  
+   
+    atexit(cleanup);
+   
+    while ((r = getopt(argc, argv, "hivl:")) > 0) {
+        switch (r) {
+        case 'i': g_options |= OPT_INETD; break;
+        case 'v': g_options |= OPT_LOGSCR; break;
+        case 'l': g_logfn = strdup(optarg); break;
+        default: usage();
+       }
+    }
+
+    if (g_options & OPT_INETD) {
+        getsockname(fileno(stdin), &rmtaddr, &addrlen);
+        processcxn(fileno(stdin), &rmtaddr);
+    } else {
+        if ((ls = socket(AF_INET, SOCK_STREAM, 0)) < 0) PERROR("socket");
+        memset(&myaddr, 0, sizeof(myaddr));
+        myaddr.sin_family = AF_INET;
+       myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
+        myaddr.sin_port = htons(FINGERPORT);
+        if (bind(ls, &myaddr, sizeof(myaddr)) < 0) PERROR("bind");
+        if (listen(ls, SOMAXCONN) < 0) PERROR("listen");
+        logf("Waiting for connection");
+        while ((as = accept(ls, &rmtaddr, &addrlen))) {
+            if ((r = fork()) == 0) {
+               processcxn(as, &rmtaddr);
+               exit(0);
+            } else {
+               if (r < 0) PERROR("fork");
+           }
+        }
+    }
+   
+    return 0;
+}
+