Actions
Bug #11306
closedSegmentation fault
Status:
Third Party's Issue
Assignee:
-
Target version:
-
ruby -v:
ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]
Description
bug is detected during CUPS call in cups gem (https://github.com/m0wfo/cups) v0.1.10. The complete core dump is attached as file 'dump.txt'.
the following works okay:
2.2.1 :001 > list = Cups.show_destinations
=> ["laserjet_1102w", "lp_null"]
2.2.1 :002 > Cups.device_uri_for( list.first )
=> "hp:/net/HP_LaserJet_Professional_P_1102w?ip=192.168.0.65"
2.2.1 :003 > Cups.device_uri_for( list.last )
=> "file:///dev/null"
the following fails (the order is not important; the second call always fails with abort):
2.2.1 :001 > list = Cups.show_destinations
=> ["laserjet_1102w", "lp_null"]
2.2.1 :002 > CupsDevice.testit( list.first )
=> "hp:/net/HP_LaserJet_Professional_P_1102w?ip=192.168.0.65"
2.2.1 :003 > CupsDevice.testit( list.last )
/home/daudi/projectspace/swalapala/app/models/cups_device.rb:101: [BUG] Segmentation fault at 0x0000000a491862
ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]
where:
class CupsDevice < ActiveRecord::Base
def self.testit( cups_name )
Cups.device_uri_for( cups_name )
end
end # class CupsDevice
and in the cups gem:
rb_define_singleton_method(rubyCups, "device_uri_for", cups_get_device_uri, 1);
static VALUE cups_get_device_uri(VALUE self, VALUE printer)
{
if (!printer_exists(printer))
{
rb_raise(rb_eRuntimeError, "The printer or destination doesn't exist!");
}
VALUE options_list;
http_t *http;
ipp_t *request;
ipp_t *response;
ipp_attribute_t *attr;
char uri[1024];
char *location;
char *name = RSTRING_PTR(printer);
request = ippNewRequest(IPP_GET_PRINTER_ATTRIBUTES);
httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL, "localhost", 0, "/printers/%s", name);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
if ((response = cupsDoRequest(http, request, "/")) != NULL)
{
if((attr = ippFindAttribute(response, "device-uri", IPP_TAG_URI)) != NULL)
{
return rb_str_new2(attr->values[0].string.text);
}
ippDelete(response);
}
return Qtrue;
}
Files
Actions
Like0
Like0Like0Like0