[ libetpan-Bugs-942266 ] segmentation fault on mailstorage_connect()

Bugs item #942266, was opened at 2004-04-26 12:12
Message generated for change (Settings changed) made by hoa
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=429696&aid=942266&group_id=41064

Category: POP3
Group: Latest development - libEtPan!
Status: Open
Resolution: None
>Priority: 1
Submitted By: Toni Willberg (toniw)
Assigned to: Nobody/Anonymous (nobody)
Summary: segmentation fault on mailstorage_connect()

Initial Comment:
Hi. 

I've got a reproducable crash with example program frm-tree

It seems to crash when doing:
  ./frm-tree --driver=pop

It doesn't seem to matter if I give it the server
hostname, port, username, or whatever.

It works with imap driver.


$ gdb

(gdb) file frm-tree
Reading symbols from frm-tree...done.
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run --driver=pop
Starting program:
/local/src/libetpan-0.32/tests/frm-tree --driver=pop
 
Program received signal SIGSEGV, Segmentation fault.
0x4007d893 in mailstorage_connect (storage=0x804a308)
at mailstorage.c:298
298     mailstorage.c: No such file or directory.
        in mailstorage.c
(gdb) bt
#0  0x4007d893 in mailstorage_connect
(storage=0x804a308) at mailstorage.c:298
#1  0x4007d5d9 in mailfolder_connect (folder=0x804a338)
at mailstorage.c:133
#2  0x080490a6 in main (argc=0, argv=0x0) at frm-tree.c:187
(gdb)


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Comment By: Nobody/Anonymous (nobody)
Date: 2004-04-27 06:07

Message:
Logged In: NO 

however, frm is some test program and sure this initialize a storage
which is invalid when exiting from init_storage() thing.

even driver value given by parse_option() in frm.c is not
valid when giving a bad driver name (driver = -1)

When a bad value is given, there is no default driver, then
the storage is not valid at the end of init_storage() call.

Maybe I will commit later a version that handles error.


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Comment By: DINH V. Hoa (hoa)
Date: 2004-04-26 21:35

Message:
Logged In: YES 
user_id=201468

in fact, the name of the driver you have to give is : pop3

what you can find in option-parser.c :

<<

  options
  
  --driver (pop3|imap|nntp|mbox|mh|maildir)  -d

  default driver is mbox

  --server {server-name} -s
  --port {port-number}   -p
  --tls                  -t
  --starttls             -x
  --user {login}         -u
  --password {password}  -v
  --path {mailbox}       -l
  --apop                 -a
  --cache {directory}    -c
  --flags {directory}    -f
>>


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Comment By: Toni Willberg (toniw)
Date: 2004-04-26 12:23

Message:
Logged In: YES 
user_id=190645

After more testing, it seems to crash with the same error if
you try to use a nonexisting driver.

With more debugging, it seems to try to access local mail
folders if you give it a nonexisting driver:

<<<
(gdb) print storage
$1 = (struct mailstorage *) 0x804a308
(gdb) print storage[0]
$2 = {sto_id = 0x0, sto_data = 0x0, sto_session = 0x0,
sto_driver = 0x0, sto_shared_folders = 0x804a328,
sto_user_data = 0x0}
(gdb) print storage[0]
$3 = {sto_id = 0x0, sto_data = 0x0, sto_session = 0x0,
sto_driver = 0x0, sto_shared_folders = 0x804a328,
sto_user_data = 0x0}
(gdb) print storage[1]
$4 = {sto_id = 0x0, sto_data = 0x11, sto_session = 0x0,
sto_driver = 0x0, sto_shared_folders = 0x0, sto_user_data =
0x31}
(gdb) print storage[2]
$5 = {sto_id = 0x804a368 "/var/mail/twillber", sto_data =
0x0, sto_session = 0x804a308, sto_driver = 0x0,
sto_shared_folders = 0x0,
  sto_user_data = 0x0}
>>>

The $5 suggests it tries to use local mail.
I think it would be wise to give the user an error instead
of using some hardcoded default driver.

I actually tried to test pop3-functionality in first place... :)



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