X-Git-Url: http://dolda2000.com/gitweb/?a=blobdiff_plain;f=statserve.c;h=1801b95b3e632392870b4fb5a779971a02f1febf;hb=86d0fd88c918f7cded4c864f646b6ff34c7bab9c;hp=ab3b3467bc0db6aba64b4207a20a4b116c0633e2;hpb=ea4e0b7174a8372eaa3b9519e7ca98e6ba78c6d7;p=statserve.git

diff --git a/statserve.c b/statserve.c
index ab3b346..1801b95 100644
--- a/statserve.c
+++ b/statserve.c
@@ -3,6 +3,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <string.h>
+#include <sys/socket.h>
 #include <ashd/req.h>
 #include <ashd/resp.h>
 #include <ashd/log.h>
@@ -22,6 +23,18 @@ static struct source *parsesource(char *arg)
     }
 }
 
+static int cached(struct hthead *req, struct fileinfo f)
+{
+    char *hdr;
+    time_t cdate;
+    
+    if((hdr = getheader(req, "If-Modified-Since")) != NULL) {
+	cdate = parsehttpdate(hdr);
+	return((cdate > 0) && !(cdate < f.mtime));
+    }
+    return(0);
+}
+
 static void serve(struct muth *muth, va_list args)
 {
     vavar(struct hthead *, req);
@@ -41,12 +54,18 @@ static void serve(struct muth *muth, va_list args)
 	goto out;
     }
     out = mtstdopen(fd, 1, 60, "r+");
-    fprintf(out, "HTTP/1.1 200 OK\n");
-    fprintf(out, "Content-Type: %s\n", f.ctype);
-    fprintf(out, "Content-Length: %zi\n", f.sz);
-    fprintf(out, "Last-Modified: %s\n", fmthttpdate(f.mtime));
-    fprintf(out, "\n");
-    fwrite(f.data, 1, f.sz, out);
+    if(cached(req, f)) {
+	fprintf(out, "HTTP/1.1 304 Not Modified\n");
+	fprintf(out, "Content-Length: 0\n");
+	fprintf(out, "\n");
+    } else {
+	fprintf(out, "HTTP/1.1 200 OK\n");
+	fprintf(out, "Content-Type: %s\n", f.ctype);
+	fprintf(out, "Content-Length: %zi\n", f.sz);
+	fprintf(out, "Last-Modified: %s\n", fmthttpdate(f.mtime));
+	fprintf(out, "\n");
+	fwrite(f.data, 1, f.sz, out);
+    }
     free(f.data);
     
 out:
@@ -84,6 +103,21 @@ static void listenloop(struct muth *muth, va_list args)
     }
 }
 
+static void sigterm(int sig)
+{
+    shutdown(0, SHUT_RDWR);
+}
+
+static void closeall(void)
+{
+    struct source *src;
+    
+    for(src = sources; src != NULL; src = src->next) {
+	if(src->close)
+	    src->close(src);
+    }
+}
+
 int main(int argc, char **argv)
 {
     int c;
@@ -104,7 +138,10 @@ int main(int argc, char **argv)
     }
     last = NULL;
     while(optind < argc) {
-	src = parsesource(argv[optind++]);
+	if((src = parsesource(argv[optind++])) == NULL) {
+	    closeall();
+	    return(1);
+	}
 	if(!sources)
 	    sources = src;
 	if(last)
@@ -113,9 +150,13 @@ int main(int argc, char **argv)
     }
     if(!sources) {
 	usage(stderr);
+	closeall();
 	return(1);
     }
     mustart(listenloop, 0);
+    signal(SIGINT, sigterm);
+    signal(SIGTERM, sigterm);
     ioloop();
+    closeall();
     return(0);
 }