X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsrc%2Freceive.c;h=7980c324fc1d42c1bca0462928e4cecb89782d00;hb=e236f915d39e27c89ac6e9ef8dd6bdf38f164a6b;hp=5125a4f47525fbb6af01d8b0add9cd255daea2df;hpb=d953610fa77ec9a08fad9c1a183181079a79674e;p=user%2Fhenk%2Fcode%2Fexim.git

diff --git a/src/src/receive.c b/src/src/receive.c
index 5125a4f47..7980c324f 100644
--- a/src/src/receive.c
+++ b/src/src/receive.c
@@ -906,7 +906,8 @@ a cut-down version of the state-machine above; we don't need to do leading-dot
 detection and unstuffing.
 
 Arguments:
-  fout      a FILE to which to write the message; NULL if skipping
+  fout      a FILE to which to write the message; NULL if skipping;
+            must be open for both writing and reading.
 
 Returns:    One of the END_xxx values indicating why it stopped reading
 */
@@ -937,8 +938,11 @@ for(;;)
       that would need to be duplicated here.  So we simply do some ungetc
       trickery.
       */
-      fseek(fout, -1, SEEK_CUR);
-      if (fgetc(fout) == '\n') return END_DOT;
+      if (fout)
+	{
+	if (fseek(fout, -1, SEEK_CUR) < 0)	return END_PROTOCOL;
+	if (fgetc(fout) == '\n')		return END_DOT;
+	}
 
       if (linelength == -1)    /* \r already seen (see below) */
         {
@@ -986,7 +990,7 @@ for(;;)
       else
 	{
 	message_size++;
-	if (fout != NULL && fputc('\n', fout) == EOF) return END_WERROR;
+	if (fout && fputc('\n', fout) == EOF) return END_WERROR;
 	(void) cutthrough_put_nl();
 	if (ch == '\r') continue;	/* don't write CR */
 	ch_state = MID_LINE;