Could not convert string from UTF7-IMAP to UTF-8.

[pacinpm]

I am using Roundcube on Debian. Inteface is set to Polish. I have some mail folders with local characters ("Wysłane" - Sent). When I try to manage folders I get this error:

PHP Error in /var/www/clockwork-bits.pl/mail/program/include/main.inc (308): Could not convert string from UTF7-IMAP to UTF-8. Make sure iconv/mbstring is installed or lib/utf8.class is available.

( ! ) Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 35 bytes) in /var/www/clockwork-bits.pl/mail/program/include/main.inc on line 249
Call Stack
# Time Memory Function Location
1 0,0022 129220 {main}( ) ../index.php:0
2 0,3088 4798724 include( '/var/www/clockwork-bits.pl/mail/program/steps/settings/manage_folders.inc' ) ../index.php:255
3 0,4292 6620264 rcube_template->send( ) ../manage_folders.inc:429
4 0,4292 6620264 rcube_template->parse( ) ../rcube_template.php:308
5 0,4295 6621756 rcube_template->parse_xml( ) ../rcube_template.php:399
6 0,4296 6621756 preg_replace_callback ( ) ../rcube_template.php:607
7 0,4552 6818000 rcube_template->xml_command( ) ../rcube_template.php:0
8 0,4560 6818644 call_user_func ( ) ../rcube_template.php:687
9 0,4560 6818644 rcube_subscription_form( ) ../rcube_template.php:0
10 0,4583 6821064 rcube_imap->list_unsubscribed( ) ../manage_folders.inc:220
11 35,6496 31866332 rcube_imap->_sort_mailbox_list( ) ../rcube_imap.php:2687
12 62,1958 66682976 rcube_charset_convert( ) ../rcube_imap.php:3631

[alec]

What IMAP server/version? What PHP version? Do you have mbstring/iconv modules installed? Enable imap_debug and attach the log here.

[pacinpm]

Replying to alec:

What IMAP server/version? What PHP version? Do you have mbstring/iconv modules installed? Enable imap_debug and attach the log here.

===========================
uw-imapd: 7:2007b~dfsg-4+lenny3
===========================
PHP Version: 5.2.6-1+lenny9
===========================
mbstring
Multibyte Support enabled
Multibyte string engine libmbfl
Multibyte (japanese) regex support enabled
Multibyte regex (oniguruma) version 4.4.4
Multibyte regex (oniguruma) backtrack check On
===========================
iconv
iconv support enabled
iconv implementation glibc
iconv library version 2.7

Directive Local Value Master Value
iconv.input_encoding ISO-8859-1 ISO-8859-1
iconv.internal_encoding ISO-8859-1 ISO-8859-1
iconv.output_encoding ISO-8859-1 ISO-8859-1

[alec]

Additionaly to imap_debug, you could also find a line

'message' => "Could not convert string from $from to $to. Make sure iconv/mbstring is installed or lib/utf8.class is available."

in main.inc file and change it to

'message' => "Could not convert string [$str] from $from to $to. Make sure iconv/mbstring is installed or lib/utf8.class is available."

To print problematic string with the error message.

[pacinpm]

Replying to alec:

To print problematic string with the error message.

Problematic string contains path to file on my webserver, outside of subfolder where Roundcube resides. I have trouble with imap_debug. It generates 12MB file with paths to all files on my webserver and also includes login names and passwords.

PHP Error in /var/www/clockwork-bits.pl/mail/program/include/main.inc (308): Could not convert string 
[cbs_html/delphi/Rysunki/materia�y pomocnicze do marketingu.cdr] 
from UTF7-IMAP to UTF-8. Make sure iconv/mbstring is installed or lib/utf8.class is available.

[alec]

If these folder names are not encoded with utf7-imap, then it's uw-imap issue.

[pacinpm]

Problem is there are no such folders in my mail account. It looks like Roundcube takes them directly from filesystem. Mail account has only standard folders created by Mozilla Thunderbird. I can't see how IMAP server can be blamed here.

[alec]

Check the imap_debug and you'll see. Roundcube doesn't read filesystem.