Class: Winevt::EventLog::Query
- Inherits:
-
Object
- Object
- Winevt::EventLog::Query
- Defined in:
- ext/winevt/winevt_query.c,
lib/winevt/query.rb,
ext/winevt/winevt.c,
ext/winevt/winevt_query.c
Overview
Query Windows EventLog channel.
Defined Under Namespace
Instance Method Summary collapse
-
#cancel ⇒ Boolean
This method cancels channel query.
-
#close ⇒ Object
This method closes channel handles forcibly.
-
#each {|String, String, String| ... } ⇒ Object
Enumerate to obtain Windows EventLog contents.
-
#initialize(channel, xpath, session = nil) ⇒ Query
constructor
Initalize Query class.
-
#locale ⇒ Object
This method obtains specified locale with [String].
-
#locale=(rb_locale_str) ⇒ Object
This method specifies locale with [String].
-
#next ⇒ Boolean
Handle the next values.
-
#offset ⇒ Integer
This method returns querying event offset.
-
#offset=(offset) ⇒ Object
This method specifies querying event offset.
-
#preserve_qualifiers=(rb_preserve_qualifiers) ⇒ Object
This method specifies whether preserving qualifiers key or not.
-
#preserve_qualifiers? ⇒ Integer
This method returns whether preserving qualifiers or not.
-
#render_as_xml=(rb_render_as_xml) ⇒ Object
This method specifies whether render as xml or not.
-
#render_as_xml? ⇒ Boolean
This method returns whether render as xml or not.
-
#seek(bookmark_or_flag) ⇒ Boolean
This method specifies seek strategy.
-
#timeout ⇒ Integer
This method returns timeout value.
-
#timeout=(timeout) ⇒ Object
This method specifies timeout value.
Constructor Details
#initialize(channel, xpath, session = nil) ⇒ Query
Initalize Query class.
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# File 'ext/winevt/winevt_query.c', line 84
static VALUE
rb_winevt_query_initialize(VALUE argc, VALUE *argv, VALUE self)
{
PWSTR evtChannel, evtXPath;
VALUE channel, xpath, session;
struct WinevtQuery* winevtQuery;
struct WinevtSession* winevtSession;
EVT_HANDLE hRemoteHandle = NULL;
DWORD len;
VALUE wchannelBuf, wpathBuf;
DWORD err = ERROR_SUCCESS;
rb_scan_args(argc, argv, "21", &channel, &xpath, &session);
Check_Type(channel, T_STRING);
Check_Type(xpath, T_STRING);
if (rb_obj_is_kind_of(session, rb_cSession)) {
winevtSession = EventSession(session);
hRemoteHandle = connect_to_remote(winevtSession->server,
winevtSession->domain,
winevtSession->username,
winevtSession->password,
winevtSession->flags,
&err);
if (err != ERROR_SUCCESS) {
raise_system_error(rb_eRuntimeError, err);
}
}
// channel : To wide char
len =
MultiByteToWideChar(CP_UTF8, 0, RSTRING_PTR(channel), RSTRING_LEN(channel), NULL, 0);
evtChannel = ALLOCV_N(WCHAR, wchannelBuf, len + 1);
MultiByteToWideChar(
CP_UTF8, 0, RSTRING_PTR(channel), RSTRING_LEN(channel), evtChannel, len);
evtChannel[len] = L'\0';
// xpath : To wide char
len = MultiByteToWideChar(CP_UTF8, 0, RSTRING_PTR(xpath), RSTRING_LEN(xpath), NULL, 0);
evtXPath = ALLOCV_N(WCHAR, wpathBuf, len + 1);
MultiByteToWideChar(CP_UTF8, 0, RSTRING_PTR(xpath), RSTRING_LEN(xpath), evtXPath, len);
evtXPath[len] = L'\0';
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
winevtQuery->query = EvtQuery(
hRemoteHandle, evtChannel, evtXPath, EvtQueryChannelPath | EvtQueryTolerateQueryErrors);
err = GetLastError();
if (err != ERROR_SUCCESS) {
raise_system_error(rb_eRuntimeError, err);
}
winevtQuery->offset = 0L;
winevtQuery->timeout = 0L;
winevtQuery->renderAsXML = TRUE;
winevtQuery->preserveQualifiers = FALSE;
winevtQuery->localeInfo = &default_locale;
winevtQuery->remoteHandle = hRemoteHandle;
ALLOCV_END(wchannelBuf);
ALLOCV_END(wpathBuf);
return Qnil;
}
|
Instance Method Details
#cancel ⇒ Boolean
This method cancels channel query.
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# File 'ext/winevt/winevt_query.c', line 530
static VALUE
rb_winevt_query_cancel(VALUE self)
{
struct WinevtQuery* winevtQuery;
BOOL result = FALSE;
TypedData_Get_Struct(
self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
if (winevtQuery->query) {
result = EvtCancel(winevtQuery->query);
}
if (result) {
return Qtrue;
} else {
return Qfalse;
}
}
|
#close ⇒ Object
This method closes channel handles forcibly.
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# File 'ext/winevt/winevt_query.c', line 555
static VALUE
rb_winevt_query_close(VALUE self)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(
self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
close_handles(winevtQuery);
return Qnil;
}
|
#each {|String, String, String| ... } ⇒ Object
Enumerate to obtain Windows EventLog contents.
This method yields the following: (Stringified EventLog, Stringified detail message, Stringified insert values)
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# File 'ext/winevt/winevt_query.c', line 402
static VALUE
rb_winevt_query_each(VALUE self)
{
RETURN_ENUMERATOR(self, 0, 0);
while (rb_winevt_query_next(self)) {
rb_ensure(rb_winevt_query_each_yield, self, rb_winevt_query_close_handle, self);
}
return Qnil;
}
|
#locale ⇒ Object
This method obtains specified locale with [String].
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# File 'ext/winevt/winevt_query.c', line 509
static VALUE
rb_winevt_query_get_locale(VALUE self)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(
self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
if (winevtQuery->localeInfo->langCode) {
return rb_str_new2(winevtQuery->localeInfo->langCode);
} else {
return rb_str_new2(default_locale.langCode);
}
}
|
#locale=(rb_locale_str) ⇒ Object
This method specifies locale with [String].
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# File 'ext/winevt/winevt_query.c', line 488
static VALUE
rb_winevt_query_set_locale(VALUE self, VALUE rb_locale_str)
{
struct WinevtQuery* winevtQuery;
LocaleInfo* locale_info = &default_locale;
TypedData_Get_Struct(
self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
locale_info = get_locale_info_from_rb_str(rb_locale_str);
winevtQuery->localeInfo = locale_info;
return Qnil;
}
|
#next ⇒ Boolean
Handle the next values. Since v0.6.0, this method is used for testing only. Please use #each instead.
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# File 'ext/winevt/winevt_query.c', line 221
static VALUE
rb_winevt_query_next(VALUE self)
{
EVT_HANDLE hEvents[QUERY_ARRAY_SIZE];
ULONG count;
DWORD status = ERROR_SUCCESS;
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
if (!EvtNext(winevtQuery->query, QUERY_ARRAY_SIZE, hEvents, INFINITE, 0, &count)) {
status = GetLastError();
if (ERROR_CANCELLED == status) {
return Qfalse;
}
if (ERROR_NO_MORE_ITEMS != status) {
return Qfalse;
}
}
if (status == ERROR_SUCCESS) {
winevtQuery->count = count;
for (int i = 0; i < count; i++) {
winevtQuery->hEvents[i] = hEvents[i];
}
return Qtrue;
}
return Qfalse;
}
|
#offset ⇒ Integer
This method returns querying event offset.
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# File 'ext/winevt/winevt_query.c', line 154
static VALUE
rb_winevt_query_get_offset(VALUE self)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
return LONG2NUM(winevtQuery->offset);
}
|
#offset=(offset) ⇒ Object
This method specifies querying event offset.
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# File 'ext/winevt/winevt_query.c', line 169
static VALUE
rb_winevt_query_set_offset(VALUE self, VALUE offset)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
winevtQuery->offset = NUM2LONG(offset);
return Qnil;
}
|
#preserve_qualifiers=(rb_preserve_qualifiers) ⇒ Object
This method specifies whether preserving qualifiers key or not.
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# File 'ext/winevt/winevt_query.c', line 452
static VALUE
rb_winevt_query_set_preserve_qualifiers(VALUE self, VALUE rb_preserve_qualifiers)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(
self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
winevtQuery->preserveQualifiers = RTEST(rb_preserve_qualifiers);
return Qnil;
}
|
#preserve_qualifiers? ⇒ Integer
This method returns whether preserving qualifiers or not.
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# File 'ext/winevt/winevt_query.c', line 471
static VALUE
rb_winevt_query_get_preserve_qualifiers_p(VALUE self)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(
self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
return winevtQuery->preserveQualifiers ? Qtrue : Qfalse;
}
|
#render_as_xml=(rb_render_as_xml) ⇒ Object
This method specifies whether render as xml or not.
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# File 'ext/winevt/winevt_query.c', line 434
static VALUE
rb_winevt_query_set_render_as_xml(VALUE self, VALUE rb_render_as_xml)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
winevtQuery->renderAsXML = RTEST(rb_render_as_xml);
return Qnil;
}
|
#render_as_xml? ⇒ Boolean
This method returns whether render as xml or not.
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# File 'ext/winevt/winevt_query.c', line 419
static VALUE
rb_winevt_query_render_as_xml_p(VALUE self)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
return winevtQuery->renderAsXML ? Qtrue : Qfalse;
}
|
#seek(bookmark_or_flag) ⇒ Boolean
This method specifies seek strategy.
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# File 'ext/winevt/winevt_query.c', line 313
static VALUE
rb_winevt_query_seek(VALUE self, VALUE bookmark_or_flag)
{
struct WinevtQuery* winevtQuery;
struct WinevtBookmark* winevtBookmark = NULL;
DWORD flag = 0;
switch (TYPE(bookmark_or_flag)) {
case T_SYMBOL:
flag = get_evt_seek_flag_from_cstr(RSTRING_PTR(rb_sym2str(bookmark_or_flag)));
break;
case T_STRING:
flag = get_evt_seek_flag_from_cstr(StringValueCStr(bookmark_or_flag));
break;
case T_FIXNUM:
flag = NUM2LONG(bookmark_or_flag);
break;
default:
if (!rb_obj_is_kind_of(bookmark_or_flag, rb_cBookmark))
rb_raise(rb_eArgError, "Expected a String or a Symbol or a Bookmark instance");
winevtBookmark = EventBookMark(bookmark_or_flag);
}
if (winevtBookmark) {
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
if (EvtSeek(winevtQuery->query,
winevtQuery->offset,
winevtBookmark->bookmark,
winevtQuery->timeout,
EvtSeekRelativeToBookmark))
return Qtrue;
} else {
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
if (EvtSeek(
winevtQuery->query, winevtQuery->offset, NULL, winevtQuery->timeout, flag)) {
return Qtrue;
}
}
return Qfalse;
}
|
#timeout ⇒ Integer
This method returns timeout value.
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# File 'ext/winevt/winevt_query.c', line 186
static VALUE
rb_winevt_query_get_timeout(VALUE self)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
return LONG2NUM(winevtQuery->timeout);
}
|
#timeout=(timeout) ⇒ Object
This method specifies timeout value.
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# File 'ext/winevt/winevt_query.c', line 201
static VALUE
rb_winevt_query_set_timeout(VALUE self, VALUE timeout)
{
struct WinevtQuery* winevtQuery;
TypedData_Get_Struct(self, struct WinevtQuery, &rb_winevt_query_type, winevtQuery);
winevtQuery->timeout = NUM2LONG(timeout);
return Qnil;
}
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