parse SIZE advertisement

diff --git a/usr.sbin/smtpd/smtp_client.c b/usr.sbin/smtpd/smtp_client.c
index 6ea6be7..289ff3b 100644 (file)
--- a/usr.sbin/smtpd/smtp_client.c
+++ b/usr.sbin/smtpd/smtp_client.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: smtp_client.c,v 1.4 2018/05/24 11:01:30 eric Exp $    */
+/*     $OpenBSD: smtp_client.c,v 1.5 2018/06/09 10:01:17 eric Exp $    */
 
 /*
  * Copyright (c) 2018 Eric Faurot <eric@openbsd.org>
@@ -73,6 +73,7 @@ enum {
 #define SMTP_EXT_AUTH_PLAIN     0x08
 #define SMTP_EXT_AUTH_LOGIN     0x10
 #define SMTP_EXT_DSN           0x20
+#define SMTP_EXT_SIZE          0x40
 
 struct smtp_client {
        void                    *tag;
@@ -81,6 +82,7 @@ struct smtp_client {
        int                      state;
        int                      flags;
        int                      ext;
+       size_t                   ext_size;
 
        struct io               *io;
        char                    *reply;
@@ -645,6 +647,7 @@ smtp_client_io(struct io *io, int evt, void *arg)
 static int
 smtp_client_readline(struct smtp_client *proto)
 {
+       const char *e;
        size_t len;
        char *line, *msg, *p;
        int cont;
@@ -702,6 +705,11 @@ smtp_client_readline(struct smtp_client *proto)
                        proto->ext |= SMTP_EXT_PIPELINING;
                else if (strcmp(msg, "DSN") == 0)
                        proto->ext |= SMTP_EXT_DSN;
+               else if (strncmp(msg, "SIZE ", 5) == 0) {
+                       proto->ext_size = strtonum(msg + 5, 0, SIZE_T_MAX, &e);
+                       if (e == NULL)
+                               proto->ext |= SMTP_EXT_SIZE;
+               }
        }
 
        if (smtp_client_replycat(proto, line) == -1) {