Hack: support quoted string in imap_fetch_body()

This is seen on Yahoo in * 123 FETCH (BODY[TEXT] ""), reported by
Yasin Malli.

2 files changed, 10 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index db7a5393..62481fb5 100644
--- a/NEWS
+++ b/NEWS
@@ -81,6 +81,9 @@ fetchmail-6.3.19 (not yet released):
 * Do STARTTLS/STLS negotiation in IMAP/POP3 if it is mandatory even if the
   server capabilities do not show support for upgradation to TLS.
   To use this, configure --sslproto tls1. (Sunil Shetye)
+* IMAP: Understand empty strings as FETCH response, seen on Yahoo. Reported by
+  Yasin Malli to fetchmail-users@ 2010-12-10.
+  Note that fetchmail continues to expect literals as FETCH response for now.
 
 # DOCUMENTATION
 * The manual page now links to IANA for GSSAPI service names.
diff --git a/imap.c b/imap.c
index 11b206c0..1364027f 100644
--- a/imap.c
+++ b/imap.c
@@ -1264,6 +1264,13 @@ static int imap_fetch_body(int sock, struct query *ctl, int number, int *lenp)
 	    return PS_SUCCESS;
     }
 
+    /* Understand the empty string. Seen on Yahoo. */
+    /* XXX FIXME: we should be able to handle strings here. */
+    if (strstr(buf+10, "\"\")")) {
+	    *lenp = 0;
+	    return PS_SUCCESS;
+    }
+
     /*
      * Try to extract a length from the FETCH response.  RFC2060 requires
      * it to be present, but at least one IMAP server (Novell GroupWise)