From ffd3e2906854ff985974be070b224beb38f4fae9 Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Fri, 04 Jun 2010 05:16:30 -0400
Subject: [PATCH] - Some fixes for BADCHARSET handling in SORT/THREAD/SEARCH response
---
program/include/rcube_imap.php | 124 ++++++++++++++++++++++++-----------------
program/include/rcube_imap_generic.php | 1
2 files changed, 73 insertions(+), 52 deletions(-)
diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index 926a864..09ea4df 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -297,7 +297,9 @@
{
if (is_array($str) && $msgs == null)
list($str, $msgs, $charset, $sort_field, $threads) = $str;
- if ($msgs != null && !is_array($msgs))
+ if ($msgs === false)
+ $msgs = array();
+ else if ($msgs != null && !is_array($msgs))
$msgs = explode(',', $msgs);
$this->search_string = $str;
@@ -607,7 +609,7 @@
else
$msg_index = array();
- if ($slice)
+ if ($slice && $msg_index)
$msg_index = array_slice($msg_index, ($this->sort_order == 'DESC' ? 0 : -$slice), $slice);
// fetch reqested headers from server
@@ -1197,20 +1199,20 @@
$a_index = range(1, $max);
}
- if ($this->sort_order == 'DESC')
+ if ($a_index !== false && $this->sort_order == 'DESC')
$a_index = array_reverse($a_index);
$this->cache[$key] = $a_index;
}
// fetch complete message index
else if ($this->get_capability('SORT')) {
- if ($a_index = $this->conn->sort($mailbox,
- $this->sort_field, $this->skip_deleted ? 'UNDELETED' : '')) {
- if ($this->sort_order == 'DESC')
- $a_index = array_reverse($a_index);
+ $a_index = $this->conn->sort($mailbox,
+ $this->sort_field, $this->skip_deleted ? 'UNDELETED' : '');
- $this->cache[$key] = $a_index;
- }
+ if ($a_index !== false && $this->sort_order == 'DESC')
+ $a_index = array_reverse($a_index);
+
+ $this->cache[$key] = $a_index;
}
else if ($a_index = $this->conn->fetchHeaderIndex(
$mailbox, "1:*", $this->sort_field, $this->skip_deleted)) {
@@ -1222,7 +1224,7 @@
$this->cache[$key] = array_keys($a_index);
}
- return $this->cache[$key];
+ return $this->cache[$key] !== false ? $this->cache[$key] : array();
}
@@ -1379,32 +1381,6 @@
$results = $this->_search_index($mailbox, $str, $charset, $sort_field);
- // try search with US-ASCII charset (should be supported by server)
- // only if UTF-8 search is not supported
- if (empty($results) && !is_array($results) && !empty($charset) && $charset != 'US-ASCII')
- {
- // convert strings to US_ASCII
- if(preg_match_all('/\{([0-9]+)\}\r\n/', $str, $matches, PREG_OFFSET_CAPTURE)) {
- $last = 0; $res = '';
- foreach($matches[1] as $m)
- {
- $string_offset = $m[1] + strlen($m[0]) + 4; // {}\r\n
- $string = substr($str, $string_offset - 1, $m[0]);
- $string = rcube_charset_convert($string, $charset, 'US-ASCII');
- if (!$string)
- continue;
- $res .= sprintf("%s{%d}\r\n%s", substr($str, $last, $m[1] - $last - 1), strlen($string), $string);
- $last = $m[0] + $string_offset - 1;
- }
- if ($last < strlen($str))
- $res .= substr($str, $last, strlen($str)-$last);
- }
- else // strings for conversion not found
- $res = $str;
-
- $results = $this->search($mbox_name, $res, NULL, $sort_field);
- }
-
$this->set_search_set($str, $results, $charset, $sort_field, (bool)$this->threading);
return $results;
@@ -1426,21 +1402,32 @@
$criteria = 'UNDELETED '.$criteria;
if ($this->threading) {
- list ($thread_tree, $msg_depth, $has_children) = $this->conn->thread(
- $mailbox, $this->threading, $criteria, $charset);
+ $a_messages = $this->conn->thread($mailbox, $this->threading, $criteria, $charset);
- $a_messages = array(
- 'tree' => $thread_tree,
- 'depth' => $msg_depth,
- 'children' => $has_children
- );
+ // Error, try with US-ASCII (RFC5256: SORT/THREAD must support US-ASCII and UTF-8,
+ // but I've seen that Courier doesn't support UTF-8)
+ if ($a_messages === false && $charset && $charset != 'US-ASCII')
+ $a_messages = $this->conn->thread($mailbox, $this->threading,
+ $this->convert_criteria($criteria, $charset), 'US-ASCII');
+
+ if ($a_messages !== false) {
+ list ($thread_tree, $msg_depth, $has_children) = $a_messages;
+ $a_messages = array(
+ 'tree' => $thread_tree,
+ 'depth' => $msg_depth,
+ 'children' => $has_children
+ );
+ }
}
else if ($sort_field && $this->get_capability('SORT')) {
$charset = $charset ? $charset : $this->default_charset;
$a_messages = $this->conn->sort($mailbox, $sort_field, $criteria, false, $charset);
- if (!$a_messages)
- return array();
+ // Error, try with US-ASCII (RFC5256: SORT/THREAD must support US-ASCII and UTF-8,
+ // but I've seen that Courier doesn't support UTF-8)
+ if ($a_messages === false && $charset && $charset != 'US-ASCII')
+ $a_messages = $this->conn->sort($mailbox, $sort_field,
+ $this->convert_criteria($criteria, $charset), false, 'US-ASCII');
}
else {
if ($orig_criteria == 'ALL') {
@@ -1449,14 +1436,16 @@
}
else {
$a_messages = $this->conn->search($mailbox,
- ($charset ? "CHARSET $charset " : '') . $criteria);
+ ($charset ? "CHARSET $charset " : '') . $criteria);
- if (!$a_messages)
- return array();
+ // Error, try with US-ASCII (some servers may support only US-ASCII)
+ if ($a_messages === false && $charset && $charset != 'US-ASCII')
+ $a_messages = $this->conn->search($mailbox,
+ 'CHARSET US-ASCII ' . $this->convert_criteria($criteria, $charset));
- // I didn't found that SEARCH always returns sorted IDs
- if (!$this->sort_field)
- sort($a_messages);
+ // I didn't found that SEARCH should return sorted IDs
+ if (is_array($a_messages) && !$this->sort_field)
+ sort($a_messages);
}
}
@@ -1491,6 +1480,39 @@
/**
+ * Converts charset of search criteria string
+ *
+ * @param string Search string
+ * @param string Original charset
+ * @param string Destination charset (default US-ASCII)
+ * @return string Search string
+ * @access private
+ */
+ private function convert_criteria($str, $charset, $dest_charset='US-ASCII')
+ {
+ // convert strings to US_ASCII
+ if (preg_match_all('/\{([0-9]+)\}\r\n/', $str, $matches, PREG_OFFSET_CAPTURE)) {
+ $last = 0; $res = '';
+ foreach ($matches[1] as $m) {
+ $string_offset = $m[1] + strlen($m[0]) + 4; // {}\r\n
+ $string = substr($str, $string_offset - 1, $m[0]);
+ $string = rcube_charset_convert($string, $charset, $dest_charset);
+ if (!$string)
+ continue;
+ $res .= sprintf("%s{%d}\r\n%s", substr($str, $last, $m[1] - $last - 1), strlen($string), $string);
+ $last = $m[0] + $string_offset - 1;
+ }
+ if ($last < strlen($str))
+ $res .= substr($str, $last, strlen($str)-$last);
+ }
+ else // strings for conversion not found
+ $res = $str;
+
+ return $res;
+ }
+
+
+ /**
* Sort thread
*
* @param string Mailbox name
diff --git a/program/include/rcube_imap_generic.php b/program/include/rcube_imap_generic.php
index 7796e0a..461beec 100644
--- a/program/include/rcube_imap_generic.php
+++ b/program/include/rcube_imap_generic.php
@@ -848,7 +848,6 @@
} while (!$this->startsWith($line, 's ', true, true));
$result_code = $this->parseResult($line);
-
if ($result_code != 0) {
$this->error = "Sort: $line";
return false;
--
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