[dbus] type errors

[dbus] type errors

[Lluís]

Hi there,

I've been trying to register a dbus method which is supposed to return a list of
elements with the following dbus signature: sssbxxa{sv} (method "GetEvents" in
"org.gnome.Shell.CalendarServer").

When returning the results, a backtrace pops up with the following error for
the "b" argument):

    Debugger entered--Lisp error: (wrong-type-argument D-Bus 63490176000)
      dbus-message-internal(2 :session ":1.15" 18130 ...)
      apply(dbus-message-internal 2 :session ":1.15" 18130 (...))
      dbus-method-return-internal(:session ":1.15" 18130 ...)
      apply(dbus-method-return-internal :session ":1.15" 18130 (...))

And for the "x" argument:

     (wrong-type-argument D-Bus 63490176000)

According to the docs in `dbus', these objects should be automatically
translated to their dbus counterparts (at least on `dbus-call-method').

Any ideas?

Thanks,
  Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth

Re: [dbus] type errors

[Michael Albinus]

Lluís <xscript@gmx.net> writes:

> Hi there,

Hi,

> I've been trying to register a dbus method which is supposed to return a list of
> elements with the following dbus signature: sssbxxa{sv} (method "GetEvents" in
> "org.gnome.Shell.CalendarServer").

You mean you wrote an own handler which reacts on
"org.gnome.Shell.CalendarServer.GetEvents"?

> When returning the results, a backtrace pops up with the following error for
> the "b" argument):
>
>     Debugger entered--Lisp error: (wrong-type-argument D-Bus 63490176000)
>       dbus-message-internal(2 :session ":1.15" 18130 ...)
>       apply(dbus-message-internal 2 :session ":1.15" 18130 (...))
>       dbus-method-return-internal(:session ":1.15" 18130 ...)
>       apply(dbus-method-return-internal :session ":1.15" 18130 (...))

Boolean requests values `t' or `nil'. Not an integer.

> And for the "x" argument:
>
>      (wrong-type-argument D-Bus 63490176000)

Per default, UINT32 is assumed. If you want to return INT64, you must
specify the type for that value. Something like ... :int64 63490176000 ...

> According to the docs in `dbus', these objects should be automatically
> translated to their dbus counterparts (at least on `dbus-call-method').

The signature of a method is not analyzed in dbus.el. That's why you must
always specify the correct type, if you want to have something different
but the default type.

See (info "(dbus)Type Conversion")

> Thanks,
>   Lluis

Best regards, Michael.

Re: [dbus] type errors

[Lluís]

Michael Albinus writes:

> Lluís <xscript@gmx.net> writes:
>> Hi there,

> Hi,

>> I've been trying to register a dbus method which is supposed to return a list of
>> elements with the following dbus signature: sssbxxa{sv} (method "GetEvents" in
>> "org.gnome.Shell.CalendarServer").

> You mean you wrote an own handler which reacts on
> "org.gnome.Shell.CalendarServer.GetEvents"?

I'm not sure about the nomenclature. Here's what I did (gets called when
clicking on the calendar "widget"):

#v+
(dbus-register-method :session
                      "org.gnome.Shell.CalendarServer"
                      "/org/gnome/Shell/CalendarServer"
                      "org.gnome.Shell.CalendarServer"
                      "GetEvents"
                      'ogc:--dbus-get-events)
#v-


>> When returning the results, a backtrace pops up with the following error for
>> the "b" argument):
>> 
>> Debugger entered--Lisp error: (wrong-type-argument D-Bus 63490176000)
>> dbus-message-internal(2 :session ":1.15" 18130 ...)
>> apply(dbus-message-internal 2 :session ":1.15" 18130 (...))
>> dbus-method-return-internal(:session ":1.15" 18130 ...)
>> apply(dbus-method-return-internal :session ":1.15" 18130 (...))

> Boolean requests values `t' or `nil'. Not an integer.

Bad paste, sorry. This is the back trace:

#v+
Debugger entered--Lisp error: (wrong-type-argument D-Bus nil)
  dbus-message-internal(2 :session ":1.15" 18386 ("" "Test" "" nil 63490176000 63490176001))
  apply(dbus-message-internal 2 :session ":1.15" 18386 ("" "Test" "" nil 63490176000 63490176001))
  dbus-method-return-internal(:session ":1.15" 18386 ("" "Test" "" nil 63490176000 63490176001))
  apply(dbus-method-return-internal :session ":1.15" 18386 ("" "Test" "" nil 63490176000 63490176001))
#v-


And here's a test handler:

#v+
(defun ogc:--dbus-get-events (since until force-reload)
  '(("" "Test" "" nil 63490176000 63490176001)))
#v-


>> And for the "x" argument:
>> 
>> (wrong-type-argument D-Bus 63490176000)

> Per default, UINT32 is assumed. If you want to return INT64, you must
> specify the type for that value. Something like ... :int64 63490176000 ...

Adding a ":int64" also throws an error.


>> According to the docs in `dbus', these objects should be automatically
>> translated to their dbus counterparts (at least on `dbus-call-method').

> The signature of a method is not analyzed in dbus.el. That's why you must
> always specify the correct type, if you want to have something different
> but the default type.

> See (info "(dbus)Type Conversion")

Does not seem to exist in my currently installed package... (latest jd's
emacs-snapshot).


Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth

Re: [dbus] type errors

[Michael Albinus]

Lluís <xscript@gmx.net> writes:

>> See (info "(dbus)Type Conversion")
>
> Does not seem to exist in my currently installed package... (latest jd's
> emacs-snapshot).

It should exist.

Alternatively, you could use <http://www.gnu.org/software/emacs/manual/html_node/dbus/>

I'll check tomorrow the example code you have sent.

> Lluis

Best regards, Michael.

Re: [dbus] type errors

[Michael Albinus]

Lluís <xscript@gmx.net> writes:

> And here's a test handler:
>
> #v+
> (defun ogc:--dbus-get-events (since until force-reload)
>   '(("" "Test" "" nil 63490176000 63490176001)))
> #v-

The following works for me:

--8<---------------cut here---------------start------------->8---
(defun ogc:--dbus-get-events (since until force-reload)
  "Returns \"sssbxxa{sv}\"."
  '("" "Test" "" :boolean nil :int64 63490176000 :int64 63490176001
    (:array :signature "{sv}")))
--8<---------------cut here---------------end--------------->8---

The last entry is an empty argument of type "a{sv}".

>> See (info "(dbus)Type Conversion")
>
> Does not seem to exist in my currently installed package... (latest jd's
> emacs-snapshot).

Again, check where it is. I'm also consulting this manual permanently,
and I'm the author of dbus.el :-)

> Lluis

Best regards, Michael.

Broken build with --with-x-toolkit=no?

[Dmitry Antipov]

./configure --with-x-toolkit=no --enable-gcc-warnings --enable-check-lisp-object-type --enable-checking

=>

...
gcc -std=gnu99 -c   -isystem /usr/include/freetype2   -W -Wabi -Waddress -Wall -Warray-bounds -Wattributes -Wbad-function-cast -Wbuiltin-macro-redefined -Wcast-align -Wchar-subscripts -Wclobbered 
-Wcomment -Wcomments -Wcoverage-mismatch -Wcpp -Wdeprecated -Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wdouble-promotion -Wempty-body -Wendif-labels -Wenum-compare -Wextra 
-Wformat-contains-nul -Wformat-extra-args -Wformat-security -Wformat-y2k -Wformat-zero-length -Wformat=2 -Wfree-nonheap-object -Wignored-qualifiers -Wimplicit -Wimplicit-function-declaration 
-Wimplicit-int -Winit-self -Wint-to-pointer-cast -Winvalid-memory-model -Winvalid-pch -Wmain -Wmaybe-uninitialized -Wmissing-braces -Wmissing-declarations -Wmissing-field-initializers 
-Wmissing-format-attribute -Wmissing-include-dirs -Wmissing-noreturn -Wmissing-parameter-type -Wmissing-prototypes -Wmudflap -Wmultichar -Wnarrowing -Wnonnull -Wnormalized=nfc -Wold-style-declaration 
-Wold-style-definition -Woverflow -Woverride-init -Wpacked -Wpacked-bitfield-compat -Wparentheses -Wpointer-arith -Wpointer-sign -Wpointer-to-int-cast -Wpragmas -Wreturn-type -Wsequence-point 
-Wstack-protector -Wstrict-aliasing -Wstrict-prototypes -Wsuggest-attribute=const -Wsuggest-attribute=noreturn -Wswitch -Wtrampolines -Wtrigraphs -Wtype-limits -Wuninitialized -Wunknown-pragmas 
-Wunused -Wunused-but-set-parameter -Wunused-but-set-variable -Wunused-function -Wunused-label -Wunused-local-typedefs -Wunused-macros -Wunused-parameter -Wunused-result -Wunused-value 
-Wunused-variable -Wvariadic-macros -Wvector-operation-performance -Wvolatile-register-var -Wwrite-strings -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -Wno-switch 
-Wno-unused-parameter -Wno-format-nonliteral -Wno-logical-op -fdiagnostics-show-option -funit-at-a-time -Werror   -g3 -O2 -DEMACS_BITMAP_FILES -I../src -I../lib 
-I/home/dima/work/stuff/emacs/trunk/oldXMenu -I/home/dima/work/stuff/emacs/trunk/oldXMenu/../src -I/home/dima/work/stuff/emacs/trunk/oldXMenu/../lib /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c
In file included from ../lib/stdio.h:58:0,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:23,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:
/usr/lib/gcc/x86_64-redhat-linux/4.7.2/include/stddef.h:150:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘typedef’
In file included from /usr/include/X11/Xlib.h:44:0,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:24,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:
/usr/include/X11/X.h:66:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘typedef’
/usr/include/X11/X.h:96:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:97:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:100:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:102:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:103:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:104:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:105:1: error: unknown type name ‘XID’
/usr/include/X11/X.h:106:1: error: unknown type name ‘XID’
In file included from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:24:0,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:
/usr/include/X11/Xlib.h:513:9: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:514:2: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:515:2: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:517:2: error: expected specifier-qualifier-list before ‘XID’
/usr/include/X11/Xlib.h:935:2: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:1409:5: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:2788:5: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:3005:5: error: unknown type name ‘XID’
/usr/include/X11/Xlib.h:3016:5: error: unknown type name ‘XID’
In file included from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:25:0,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:
/home/dima/work/stuff/emacs/trunk/oldXMenu/X10.h:56:2: error: unknown type name ‘XID’
/home/dima/work/stuff/emacs/trunk/oldXMenu/X10.h:75:54: error: unknown type name ‘XID’
In file included from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenu.h:20:0,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:26,
                  from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:
/usr/include/X11/Xutil.h:120:2: error: unknown type name ‘XID’
/usr/include/X11/Xutil.h:322:2: error: unknown type name ‘XID’
/usr/include/X11/Xutil.h:391:5: error: unknown type name ‘XID’
/usr/include/X11/Xutil.h:410:5: error: unknown type name ‘XID’
/usr/include/X11/Xutil.h:570:5: error: unknown type name ‘XID’
In file included from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:0:
/home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:63:53: error: unknown type name ‘XID’
/home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:65:51: error: unknown type name ‘XID’
/home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:66:53: error: unknown type name ‘XID’
/home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c: In function ‘XMenuDeletePane’:
/home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:37:5: error: implicit declaration of function ‘XDeleteAssoc’ [-Werror=implicit-function-declaration]
cc1: all warnings being treated as errors
make[2]: *** [DelPane.o] Error 1
make[2]: Leaving directory `/home/dima/work/stuff/emacs/trunk/build-no-toolkit/oldXMenu'
make[1]: *** [really-oldXMenu] Error 2
make[1]: Leaving directory `/home/dima/work/stuff/emacs/trunk/build-no-toolkit/src'
make: *** [src] Error 2

It looks like generated lib/stdio.h isn't good enough for oldXMenu :-(.

Dmitry

Re: Broken build with --with-x-toolkit=no?

[Eli Zaretskii]

> Date: Tue, 04 Dec 2012 17:09:59 +0400
> From: Dmitry Antipov <dmantipov@yandex.ru>
> 
> In file included from ../lib/stdio.h:58:0,
>                   from /home/dima/work/stuff/emacs/trunk/oldXMenu/XMenuInt.h:23,
>                   from /home/dima/work/stuff/emacs/trunk/oldXMenu/DelPane.c:16:
> /usr/lib/gcc/x86_64-redhat-linux/4.7.2/include/stddef.h:150:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘typedef’

What is on line 150 in your system's stddef.h?

Re: Broken build with --with-x-toolkit=no?

[Paul Eggert]

Thanks for reporting that.  The problem was that <config.h>
wasn't being included.  Should be fixed in trunk bzr 111093.

Re: [dbus] type errors

[Lluís]

Michael Albinus writes:

> Lluís <xscript@gmx.net> writes:
>> And here's a test handler:
>> 
>> #v+
>> (defun ogc:--dbus-get-events (since until force-reload)
>> '(("" "Test" "" nil 63490176000 63490176001)))
>> #v-

> The following works for me:

> (defun ogc:--dbus-get-events (since until force-reload)
>   "Returns \"sssbxxa{sv}\"."
>   '("" "Test" "" :boolean nil :int64 63490176000 :int64 63490176001
>     (:array :signature "{sv}")))

> The last entry is an empty argument of type "a{sv}".

Ok, now it's not complaining, but still not working.

The signature is supposed to be "a(sssbxxa{sv})", but after (quickly) reading
the manual I'm unable to return such a structure.


>>> See (info "(dbus)Type Conversion")
>> 
>> Does not seem to exist in my currently installed package... (latest jd's
>> emacs-snapshot).

> Again, check where it is. I'm also consulting this manual permanently,
> and I'm the author of dbus.el :-)

Looks like jd's emacs-snapshot package is not properly listing the manual in
emacs' info directory (it does appear in the cmdline info as node
"emacs-snapshot/dbus").


Thanks a lot,
  Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth

Re: [dbus] type errors

[Michael Albinus]

Lluís <xscript@gmx.net> writes:

>> The following works for me:
>
>> (defun ogc:--dbus-get-events (since until force-reload)
>>   "Returns \"sssbxxa{sv}\"."
>>   '("" "Test" "" :boolean nil :int64 63490176000 :int64 63490176001
>>     (:array :signature "{sv}")))
>
>> The last entry is an empty argument of type "a{sv}".
>
> Ok, now it's not complaining, but still not working.

Hmm, I haven't installed a calendar client which I could use for
testing. I run dry tests via "dbus-send ...".

Which calendar client do you use?

> The signature is supposed to be "a(sssbxxa{sv})", but after (quickly) reading
> the manual I'm unable to return such a structure.

Try this one:

--8<---------------cut here---------------start------------->8---
(defun ogc:--dbus-get-events (since until force-reload)
  "Returns \"a(sssbxxa{sv})\"."
  '((:array
     (:struct "" "Test1" "" :boolean nil :int64 63490176000 :int64 63490176001
              (:array :signature "{sv}"))
     (:struct "" "Test2" "" :boolean t :int64 63490176002 :int64 63490176003
              (:array :signature "{sv}")))))
--8<---------------cut here---------------end--------------->8---

> Thanks a lot,
>   Lluis

Best regards, Michael.

Re: [dbus] type errors

[Lluís]

Michael Albinus writes:

> Lluís <xscript@gmx.net> writes:
>>> The following works for me:
>> 
>>> (defun ogc:--dbus-get-events (since until force-reload)
>>> "Returns \"sssbxxa{sv}\"."
>>> '("" "Test" "" :boolean nil :int64 63490176000 :int64 63490176001
>>> (:array :signature "{sv}")))
>> 
>>> The last entry is an empty argument of type "a{sv}".
>> 
>> Ok, now it's not complaining, but still not working.

> Hmm, I haven't installed a calendar client which I could use for
> testing. I run dry tests via "dbus-send ...".

> Which calendar client do you use?

GNOME shell comes with a widget in the (by default, top) bar. Clicking on it
invokes the "GetEvents" method I'm trying to implement.


>> The signature is supposed to be "a(sssbxxa{sv})", but after (quickly) reading
>> the manual I'm unable to return such a structure.

> Try this one:

> (defun ogc:--dbus-get-events (since until force-reload)
>   "Returns \"a(sssbxxa{sv})\"."
>   '((:array
>      (:struct "" "Test1" "" :boolean nil :int64 63490176000 :int64 63490176001
>               (:array :signature "{sv}"))
>      (:struct "" "Test2" "" :boolean t :int64 63490176002 :int64 63490176003
>               (:array :signature "{sv}")))))

Yes, I finally got it working with this same structure.

I'll try to finish the rest and post the code in the org-mode list.


Thanks a lot,
  Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth