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-rw-r--r--program/lib/Roundcube/rcube_imap_generic.php83
1 files changed, 47 insertions, 36 deletions
diff --git a/program/lib/Roundcube/rcube_imap_generic.php b/program/lib/Roundcube/rcube_imap_generic.php
index 96173d317..298d44cb0 100644
--- a/program/lib/Roundcube/rcube_imap_generic.php
+++ b/program/lib/Roundcube/rcube_imap_generic.php
@@ -2530,48 +2530,59 @@ class rcube_imap_generic
return false;
}
- switch ($encoding) {
- case 'base64':
- $mode = 1;
- break;
- case 'quoted-printable':
- $mode = 2;
- break;
- case 'x-uuencode':
- case 'x-uue':
- case 'uue':
- case 'uuencode':
- $mode = 3;
- break;
- default:
- $mode = 0;
- }
-
- // Use BINARY extension when possible (and safe)
- $binary = $mode && preg_match('/^[0-9.]+$/', $part) && $this->hasCapability('BINARY');
- $fetch_mode = $binary ? 'BINARY' : 'BODY';
- $partial = $max_bytes ? sprintf('<0.%d>', $max_bytes) : '';
+ $initiated = false;
- // format request
- $key = $this->nextTag();
- $request = $key . ($is_uid ? ' UID' : '') . " FETCH $id ($fetch_mode.PEEK[$part]$partial)";
- $result = false;
- $found = false;
+ do {
+ if (!$initiated) {
+ switch ($encoding) {
+ case 'base64':
+ $mode = 1;
+ break;
+ case 'quoted-printable':
+ $mode = 2;
+ break;
+ case 'x-uuencode':
+ case 'x-uue':
+ case 'uue':
+ case 'uuencode':
+ $mode = 3;
+ break;
+ default:
+ $mode = 0;
+ }
- // send request
- if (!$this->putLine($request)) {
- $this->setError(self::ERROR_COMMAND, "Unable to send command: $request");
- return false;
- }
+ // Use BINARY extension when possible (and safe)
+ $binary = !$binary_err && $mode && preg_match('/^[0-9.]+$/', $part) && $this->hasCapability('BINARY');
+ $fetch_mode = $binary ? 'BINARY' : 'BODY';
+ $partial = $max_bytes ? sprintf('<0.%d>', $max_bytes) : '';
+
+ // format request
+ $key = $this->nextTag();
+ $request = $key . ($is_uid ? ' UID' : '') . " FETCH $id ($fetch_mode.PEEK[$part]$partial)";
+ $result = false;
+ $found = false;
+ $initiated = true;
+
+ // send request
+ if (!$this->putLine($request)) {
+ $this->setError(self::ERROR_COMMAND, "Unable to send command: $request");
+ return false;
+ }
- if ($binary) {
- // WARNING: Use $formatted argument with care, this may break binary data stream
- $mode = -1;
- }
+ if ($binary) {
+ // WARNING: Use $formatted argument with care, this may break binary data stream
+ $mode = -1;
+ }
+ }
- do {
$line = trim($this->readLine(1024));
+ // handle UNKNOWN-CTE response - RFC 3516, try standard BODY request instead of BINARY
+ if ($binary && preg_match('/^' . $key . ' NO \[UNKNOWN-CTE\]/i', $line)) {
+ $initiated = false;
+ continue;
+ }
+
if (!$line) {
break;
}