1 files changed, 56 insertions, 0 deletions
diff --git a/src/libauthsrv/_asrdresp.c b/src/libauthsrv/_asrdresp.c
new file mode 100644
index 00000000..8a7daf8c
--- /dev/null
+++ b/src/libauthsrv/_asrdresp.c
@@ -0,0 +1,56 @@
+#include <u.h>
+#include <libc.h>
+#include <authsrv.h>
+
+static char *pbmsg = "AS protocol botch";
+
+int
+_asrdresp(int fd, char *buf, int len)
+{
+	int n;
+	char error[64];
+
+	if(read(fd, buf, 1) != 1){
+		werrstr(pbmsg);
+		return -1;
+	}
+
+	n = len;
+	switch(buf[0]){
+	case AuthOK:
+		if(readn(fd, buf, len) != len){
+			werrstr(pbmsg);
+			return -1;
+		}
+		break;
+	case AuthErr:
+		if(readn(fd, error, sizeof error) != sizeof error){
+			werrstr(pbmsg);
+			return -1;
+		}
+		error[sizeof error-1] = '\0';
+		werrstr("remote: %s", error);
+		return -1;
+	case AuthOKvar:
+		if(readn(fd, error, 5) != 5){
+			werrstr(pbmsg);
+			return -1;
+		}
+		error[5] = 0;
+		n = atoi(error);
+		if(n <= 0 || n > len){
+			werrstr(pbmsg);
+			return -1;
+		}
+		memset(buf, 0, len);
+		if(readn(fd, buf, n) != n){
+			werrstr(pbmsg);
+			return -1;
+		}
+		break;
+	default:
+		werrstr(pbmsg);
+		return -1;
+	}
+	return n;
+}