|Summary:||ftp proxy connects to 0.0.0.0|
|Product:||Apache httpd-2||Reporter:||Kirill K <kirill>|
|Component:||mod_proxy||Assignee:||Apache HTTPD Bugs Mailing List <bugs>|
|Attachments:||A quick patch that made reverse ftp work fine for me|
Description Kirill K 2003-11-22 23:13:24 UTC
Hello. I'm trying to forward requests to remote ftp-server with simple htaccess (located in /ftp/ dir): RewriteEngine on RewriteRule (.*)\.txt$ ftp://126.96.36.199/$1.txt [P] But Apache (2.0.48) returns such error: Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /ftp/file.txt. Reason: Could not connect to remote machine: (null) port 80 I've tested same htaccess with http forward and it just works fine. In error.log (debug mode) i'm getting such messages: proxy_ftp.c(824): proxy: FTP: serving URL ftp://188.8.131.52 proxy_ftp.c(917): proxy: FTP: connecting ftp://184.108.40.206 to (null):80 proxy_ftp.c(995): proxy: FTP: fam 2 socket created, trying to connect to 0.0.0.0:80 ((null))... (OS 10049)The requested address is not valid in its context. : proxy: FTP: attempt to connect to 0.0.0.0:80 ((null)) failed Some more info: i've tested it under FreeBSD and WinXP, got same result, also if there's local ftp-server running (listening to 0.0.0.0, not 127.0.0.1), then apache connects to it successfully. Also, i've tried different URI schemes, because i think that module just cant parse it correctly, but no way.. ftp://220.127.116.11 ftp://18.104.22.168/ ftp://22.214.171.124:21 ftp://126.96.36.199:21/ ftp://anonymous:firstname.lastname@example.org etc, all failed. Also, i've tried to bind remote ftp with ProxyPass directive -- same result (and again -- binding http server was successful) Please help, I don't like SQUID for some reasons and really would like to have ftp-proxy with Apache running. Thanks a lot in advance.
Comment 1 Kirill K 2003-11-24 00:19:18 UTC
Today i've added desired IP directly into proxy_ftp.c and though now Apache tries to open desired IP, i'm getting segfault (11) just like in this bug: http://nagoya.apache.org/bugzilla/show_bug.cgi?id=14976 Seems like it still not fixed in 2.0.48.
Comment 2 William A. Rowe Jr. 2003-11-26 21:57:30 UTC
Seriously doubt that this is an identical segfault, Kirill. Why not attach a backtrace of the crash dump? And why would you complain about segfaults in a modified module if you didn't post the patch you attempted to use??? Please, more details - we don't read minds and would love to look closer at these issues :)
Comment 3 Kirill K 2003-11-27 14:01:52 UTC
Sorry, never did things like that :) Here goes the backtrace: (gdb) bt #0 0x283572c6 in memcpy () from /usr/lib/libc.so.5 #1 0x0000000c in ?? () #2 0x28349d3f in strchr () from /usr/lib/libc.so.5 #3 0x2834cad5 in __vfprintf () from /usr/lib/libc.so.5 #4 0x2833cd35 in sprintf () from /usr/lib/libc.so.5 #5 0x284ff596 in ap_proxy_ftp_handler () from /opt/apache/modules/mod_proxy_ftp.so #6 0x74662f2f in ?? () Cannot access memory at address 0x3a707466 I'll try to collect more info tomorrow, but need to re-compile apache for that.
Comment 4 Kirill K 2003-11-28 15:57:24 UTC
one more dump: (gdb) bt full #0 apr_palloc (pool=0x280d11d0, size=8) at apr_pools.c:640 active = (struct apr_memnode_t *) 0x280d2a80 node = (struct apr_memnode_t *) 0x2 mem = (void *) 0x0 free_index = 671945168 (gdb) (after i've recompiled apache with -g option)
Comment 5 Pascal Terjan 2004-03-22 10:39:56 UTC
Created attachment 10892 [details] A quick patch that made reverse ftp work fine for me
Comment 6 Graham Leggett 2004-05-21 22:09:01 UTC
Patch applied to v2.1.0-dev, awaiting backport to v2.0
Comment 7 Jeff Trawick 2004-07-03 12:59:59 UTC
committed to 2.0.51-dev thanks again for the patch!