/** @file
Parser: parser @b operators.
Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com)
Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
*/
#include "classes.h"
#include "pa_vmethod_frame.h"
#include "pa_common.h"
#include "pa_os.h"
#include "pa_request.h"
#include "pa_vint.h"
#include "pa_sql_connection.h"
#include "pa_vdate.h"
#include "pa_vmethod_frame.h"
#include "pa_vclass.h"
#include "pa_charset.h"
#include "pa_varray.h"
#ifdef HAVE_SYSLOG
#include "syslog.h"
#endif
volatile const char * IDENT_OP_C="$Id: op.C,v 1.280 2026/04/25 13:38:46 moko Exp $";
// defines
#define CASE_DEFAULT_VALUE "DEFAULT"
// class
class VClassMAIN: public VClass {
public:
VClassMAIN();
};
// defines for statics
#define SWITCH_DATA_NAME "SWITCH-DATA"
#define CACHE_DATA_NAME "CACHE-DATA"
#define EXCEPTION_VAR_NAME "exception"
// statics
//^switch ^case
static const String switch_data_name(SWITCH_DATA_NAME);
//^cache
static const String cache_data_name(CACHE_DATA_NAME);
static const String exception_var_name(EXCEPTION_VAR_NAME);
// local defines
#define CACHE_EXCEPTION_HANDLED_CACHE_NAME "cache"
// helpers
class Untaint_lang_name2enum: public HashString<String::Language> {
public:
Untaint_lang_name2enum() {
#define ULN(name, LANG) put(name, (value_type)(String::L_##LANG));
ULN("clean", CLEAN);
ULN("as-is", AS_IS);
ULN("optimized-as-is", AS_IS|String::L_OPTIMIZE_BIT);
ULN("file-spec", FILE_SPEC);
ULN("http-header", HTTP_HEADER);
ULN("mail-header", MAIL_HEADER);
ULN("uri", URI);
ULN("sql", SQL);
ULN("js", JS);
ULN("xml", XML);
ULN("optimized-xml", XML|String::L_OPTIMIZE_BIT);
ULN("html", HTML);
ULN("optimized-html", HTML|String::L_OPTIMIZE_BIT);
ULN("regex", REGEX);
ULN("parser-code", PARSER_CODE);
ULN("json", JSON);
#undef ULN
}
static Untaint_lang_name2enum &instance(){
static Untaint_lang_name2enum *singleton=NULL;
if(!singleton)
singleton=new Untaint_lang_name2enum;
return *singleton;
}
};
// methods
static void _if(Request& r, MethodParams& params) {
size_t max_param=params.count()-1;
size_t i=0;
do {
bool condition=params.as_bool(i, "condition must be expression", r);
if(condition) {
r.process_write(params[i+1]);
return;
}
i+=2;
} while (i < max_param);
if(i == max_param)
r.process_write(params[i]);
}
String::Language get_untaint_lang(const String& lang_name){
String::Language lang=Untaint_lang_name2enum::instance().get(lang_name);
if(!lang)
throw Exception(PARSER_RUNTIME, &lang_name, "invalid taint language");
return lang;
}
static void _untaint(Request& r, MethodParams& params) {
String::Language lang;
if(params.count()==1)
lang=String::L_AS_IS; // mark as simply 'as-is'. useful in html from sql
else
lang=get_untaint_lang(params.as_string(0, "lang must be string"));
Value& vbody=params.as_junction(params.count()-1, "body must be code");
Value& result=r.process(vbody);
if(const String* string=result.get_string()){
String &untainted=*new String();
string->append_to(untainted, lang); // mark all tainted to specified language
r.write(untainted);
} else
r.write(result); // this is not normal, just backward compatibility
}
static void _taint(Request& r, MethodParams& params) {
String::Language lang;
if(params.count()==1)
lang=String::L_TAINTED; // mark as simply 'tainted'. useful in table:create
else
lang=get_untaint_lang(params.as_string(0, "lang must be string"));
{
Value& vbody=params.as_no_junction(params.count()-1, "body must not be code");
String result(vbody.as_string(), lang); // force result language to specified
r.write(result);
}
}
static void _apply_taint(Request& r, MethodParams& params) {
String::Language lang=params.count()==1 ? String::L_AS_IS : get_untaint_lang(params.as_string(0, "lang must be string"));
const String &sbody=params.as_string(params.count()-1, "body must be string");
String::Body result_body=sbody.cstr_to_string_body_untaint(lang, r.connection(false), &r.charsets);
r.write(*new String(result_body, String::L_AS_IS));
}
static void _process(Request& r, MethodParams& params) {
Method* main_method;
size_t index=0;
Value* target_self;
Value& maybe_target_self=params[index];
if(maybe_target_self.get_string() || maybe_target_self.get_junction())
target_self=&r.get_method_frame()->caller()->self();
else {
target_self=&maybe_target_self;
if(params.count()==1)
throw Exception(PARSER_RUNTIME, 0, "no body specified");
index++;
}
{
VStateless_class *target_class=target_self->get_class();
if(!target_class)
throw Exception(PARSER_RUNTIME, 0, "no target class");
// temporary zero @main so to maybe-replace it in processed code
Temp_method temp_method_main(*target_class, main_method_name, 0);
const String* main_alias=0;
const String* file_alias=0;
int line_no_alias_offset=0;
bool allow_class_replace=false;
size_t options_index=index+1;
if(options_index<params.count())
if(HashStringValue* options=params.as_hash(options_index)) {
for(HashStringValue::Iterator i(*options); i; i.next() ){
String::Body key=i.key();
Value* value=i.value();
if(key == "main") {
main_alias=&value->as_string();
} else if(key == "file") {
file_alias=&value->as_string();
} else if(key == "lineno") {
line_no_alias_offset=value->as_int();
} else if(key == "replace") {
allow_class_replace=r.process(*value).as_bool();
} else
throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
}
}
uint processe_file_no=file_alias ? r.register_file(r.full_disk_path(*file_alias)) : pseudo_file_no__process;
// process...{string}
Value& vjunction=params.as_junction(index, "body must be code");
// evaluate source to process
const String& source=r.process_to_string(vjunction);
Temp_class_replace class_replace(r, allow_class_replace);
r.use_buf(*target_class, source.untaint_cstr(String::L_PARSER_CODE, r.connection(false)), main_alias, processe_file_no, line_no_alias_offset);
// main_method
main_method=target_class->get_method(main_method_name);
}
// after restoring current-request-lang
// maybe-execute @main[]
if(main_method) {
METHOD_FRAME_ACTION(*main_method, r.get_method_frame()->caller(), *target_self, {
frame.empty_params();
r.call(frame);
r.write(frame.result());
});
}
}
static void _rem(Request&, MethodParams& params) {
params.as_junction(0, "body must be code");
}
static void _while(Request& r, MethodParams& params) {
InCycle temp(r);
Value& vcondition=params.as_expression(0, "condition must be number, bool or expression");
Value& body_code=params.as_junction(1, "body must be code");
Value* delim_maybe_code=params.count()>2?¶ms[2]:0;
// while...
int endless_loop_count=0;
if(delim_maybe_code){ // delimiter set
bool need_delim=false;
while(true) {
if(++endless_loop_count>=pa_loop_limit) // endless loop?
throw Exception(PARSER_RUNTIME, 0, "endless loop detected");
if(!r.process(vcondition).as_bool())
break;
Value& sv_processed=r.process(body_code);
TempSkip4Delimiter skip(r);
const String* s_processed=sv_processed.get_string();
if(s_processed && !s_processed->is_empty()) { // we have body
if(need_delim) // need delim & iteration produced string?
r.write(r.process(*delim_maybe_code));
else
need_delim=true;
}
r.write(sv_processed);
if(skip.check_break())
break;
}
} else {
while(true) {
if(++endless_loop_count>=pa_loop_limit) // endless loop?
throw Exception(PARSER_RUNTIME, 0, "endless loop detected");
if(!r.process(vcondition).as_bool())
break;
r.process_write(body_code);
if(r.check_skip_break())
break;
}
}
}
static void _use(Request& r, MethodParams& params) {
const String& file_name=params.as_file_name(0);
const String* use_origin=0;
bool allow_class_replace=false;
bool load_auto_p=false;
if(params.count()==2)
if(HashStringValue* options=params.as_hash(1)) {
for(HashStringValue::Iterator i(*options); i; i.next() ){
String::Body key=i.key();
Value* value=i.value();
if(key == "origin") {
use_origin=&value->as_string();
} else if(key == "replace") {
allow_class_replace=r.process(*value).as_bool();
} else if(key == "main") {
load_auto_p=r.process(*value).as_bool();
} else
throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
}
}
if(!use_origin)
if(VMethodFrame* caller=r.get_method_frame()->caller())
use_origin=r.get_method_filespec(&caller->method);
Temp_class_replace class_replace(r, allow_class_replace);
r.use_file(file_name, use_origin, load_auto_p);
}
static void set_skip(Request& r, Request::Skip askip) {
if(!r.get_in_cycle())
throw Exception(askip==Request::SKIP_BREAK ? "parser.break" : "parser.continue", 0, "without cycle");
r.set_skip(askip);
}
static void _break(Request& r, MethodParams& params) {
if(!params.count() || params.as_bool(0, "condition must be expression", r)) set_skip(r, Request::SKIP_BREAK);
}
static void _continue(Request& r, MethodParams& params) {
if(!params.count() || params.as_bool(0, "condition must be expression", r)) set_skip(r, Request::SKIP_CONTINUE);
}
static void _return(Request& r, MethodParams& params) {
VMethodFrame& caller=*r.get_method_frame()->caller();
if(params.count())
r.put_element(caller, Symbols::RESULT_SYMBOL, &r.process(params[0]));
r.set_skip_return(caller);
}
static void _for(Request& r, MethodParams& params) {
InCycle temp(r);
const String& var_name=params.as_string(0, "var name must be string");
int from=params.as_int(1, "from must be int", r);
int to=params.as_int(2, "to must be int", r);
Value& body_code=params.as_junction(3, "body must be code");
Value* delim_maybe_code=params.count()>4?¶ms[4]:0;
if(to-from>=pa_loop_limit) // too long loop?
throw Exception(PARSER_RUNTIME, 0, "endless loop detected");
VInt* vint=new VInt(0);
VMethodFrame& caller=*r.get_method_frame()->caller();
r.put_element(caller, var_name, vint);
if(delim_maybe_code){ // delimiter set
bool need_delim=false;
for(int i=from; i<=to; i++) {
vint->set_int(i);
Value& sv_processed=r.process(body_code);
TempSkip4Delimiter skip(r);
const String* s_processed=sv_processed.get_string();
if(s_processed && !s_processed->is_empty()) { // we have body
if(need_delim) // need delim & iteration produced string?
r.write(r.process(*delim_maybe_code));
else
need_delim=true;
}
r.write(sv_processed);
if(skip.check_break())
break;
}
} else {
for(int i=from; i<=to; i++) {
vint->set_int(i);
r.process_write(body_code);
if(r.check_skip_break())
break;
}
}
}
static void _eval(Request& r, MethodParams& params) {
Value& expr=params.as_junction(0, "need expression");
// evaluate expresion
Value& value_result=r.process(expr).as_expr_result();
if(params.count()>1) {
const String& fmt=params.as_string(1, "fmt must be string").trim();
if(fmt.is_empty()){
r.write(value_result);
} else {
r.write(String(format_double(value_result.as_double(), fmt.cstrm())));
}
} else
r.write(value_result);
}
static void _connect(Request& r, MethodParams& params) {
Value& url=params.as_no_junction(0, "url must not be code");
Value& body_code=params.as_junction(1, "body must be code");
Table* protocol2driver_and_client=0;
if(Value* sql=r.main_class.get_element(String(MAIN_SQL_NAME))) {
if(Value* element=sql->get_element(String(MAIN_SQL_DRIVERS_NAME))) {
protocol2driver_and_client=element->get_table();
}
}
// connect
SQL_Connection* connection=SQL_driver_manager->get_connection(url.as_string(),
protocol2driver_and_client,
r.charsets.source().NAME().cstr(),
r.request_info.document_root);
Temp_connection temp_connection(r, connection);
// execute body
try {
r.process_write(body_code);
connection->commit();
connection->close();
} catch(...) { // process problem
connection->rollback();
connection->close();
rethrow;
}
}
#ifndef DOXYGEN
class Switch_data: public PA_Object {
public:
Request& r;
const String* searching_string;
double searching_double;
bool searching_bool;
Value* found;
Value* _default;
public:
Switch_data(Request& ar, Value& asearching):
r(ar)
{
if(asearching.is_string() || asearching.is_void()){
searching_string=&asearching.as_string();
searching_double=0;
searching_bool=false;
} else {
searching_string=0;
searching_double=asearching.as_double();
searching_bool=asearching.is_bool();
}
}
};
#endif
static void _switch(Request& r, MethodParams& params) {
Switch_data* data=new Switch_data(r, r.process(params[0]));
Temp_hash_value<HashString<void*>, void*> switch_data_setter(&r.classes_conf, switch_data_name, data);
Value& cases_code=params.as_junction(1, "switch cases must be code");
// execution of found ^case[...]{code} must be in context of ^switch[...]{code}
// because of stacked WWrapper used there as wcontext
r.process(cases_code);
if(Value* selected_code=data->found? data->found: data->_default)
r.process_write(*selected_code);
}
static void _case(Request& r, MethodParams& params) {
Switch_data* data=static_cast<Switch_data*>(r.classes_conf.get(switch_data_name));
if(!data)
throw Exception(PARSER_RUNTIME,
0,
"without switch");
if(data->found) // matches already was found
return;
int count=params.count();
Value* code=¶ms.as_expression(--count, "case result must be code");
#ifdef USE_DESTRUCTORS
Junction *j=code->get_junction();
if (j){
code=new VJunction(j->self,j->method,j->method_frame,j->rcontext,j->wcontext,j->code);
if (j->wcontext) j->wcontext->attach_junction((VJunction *)code);
}
#endif
for(int i=0; i<count; i++){
Value& value=r.process(params[i]);
if(value.is_string() && value.as_string() == CASE_DEFAULT_VALUE){
data->_default=code;
continue;
}
bool matches;
if(data->searching_string)
matches=(*data->searching_string) == value.as_string();
else if(data->searching_bool || value.is_bool())
matches=(data->searching_double != 0) == value.as_bool();
else
matches=data->searching_double == value.as_double();
if(matches){
data->found=code;
break;
}
}
}
#ifndef DOXYGEN
struct Try_catch_result {
ValueRef processed_code;
const String* exception_should_be_handled;
Try_catch_result(): exception_should_be_handled(0) {}
};
/// Auto-object used for temporary changing Request::skip.
class Temp_skip {
Request& frequest;
Request::Skip saved_skip;
public:
Temp_skip(Request& arequest) : frequest(arequest), saved_skip(arequest.get_skip()) {
arequest.set_skip(Request::SKIP_NOTHING);
}
~Temp_skip() {
if(frequest.get_skip() == Request::SKIP_NOTHING)
frequest.set_skip(saved_skip);
}
};
#endif
/// used by ^try and ^cache, @returns $exception.handled[string] if any
template<class I>
static Try_catch_result try_catch(Request& r, Value& body_code(Request&, I), I info, Value* catch_code, bool could_be_handled_by_caller=false) {
Try_catch_result result;
// minor bug: context not restored if only finally code is present, see #1062
if(!catch_code) {
result.processed_code=body_code(r, info);
return result;
}
// taking snapshot of try-context
Request_context_saver try_context(r);
try {
result.processed_code=body_code(r, info);
} catch(const Exception& e) {
Request_context_saver throw_context(r); // remembering exception stack trace
Request::Exception_details details=r.get_details(e);
try_context.restore(); // restoring try-context for code after try and catch-code
{
Temp_value_element temp(r, *catch_code->get_junction()->method_frame, exception_var_name, &details.vhash);
Temp_skip temp_skip(r);
result.processed_code=r.process(*catch_code);
}
// retriving $exception.handled
Value* vhandled=details.vhash.hash().get(exception_handled_part_name);
bool bhandled=false;
if(vhandled) {
if(vhandled->is_string()) { // not simple $exception.handled(1/0)?
if(bhandled=could_be_handled_by_caller) { // and we can possibly handle it
result.exception_should_be_handled=vhandled->get_string(); // considering 'recovered' and let the caller recover
}
} else
bhandled=vhandled->as_bool();
}
if(!bhandled){
throw_context.restore(); // restoring exception stack trace creared by try_context.restore()
rethrow;
}
}
return result;
}
static Value& process_try_body_code(Request& r, Value* body_code) {
return r.process(*body_code);
}
// cache--
// consts
const int DATA_STRING_SERIALIZED_VERSION=0x0006;
// helper types
#ifndef DOXYGEN
struct Data_string_serialized_prolog {
int version;
time_t expires;
};
#endif
void cache_delete(const String& file_spec) {
file_delete(file_spec, false/*fail_on_problem*/);
}
#ifndef DOXYGEN
struct Cache_scope {
public:
time_t expires;
const String* body_from_disk;
};
struct Locked_process_and_cache_put_action_info {
Request *r;
Cache_scope *scope;
Value* body_code;
Value* catch_code;
const String* processed_code;
};
#endif
static Value& process_cache_body_code(Request& r, Value* body_code) {
return r.process(*body_code);
}
/* @todo maybe network order worth spending some effort?
don't bothering myself with network byte order,
am not planning to be able to move resulting file across platforms
*/
static void locked_process_and_cache_put_action(int f, void *context) {
Locked_process_and_cache_put_action_info& info=
*static_cast<Locked_process_and_cache_put_action_info *>(context);
const String* body_from_disk=info.scope->body_from_disk;
// body->process
Try_catch_result result=try_catch(*info.r,
process_cache_body_code, info.body_code,
info.catch_code, body_from_disk!=0 /*we have something old=we can handle=recover later*/);
if(result.exception_should_be_handled) {
if(*result.exception_should_be_handled==CACHE_EXCEPTION_HANDLED_CACHE_NAME) {
assert(body_from_disk);
info.processed_code=body_from_disk;
} else
throw Exception(PARSER_RUNTIME,
result.exception_should_be_handled,
"$" EXCEPTION_VAR_NAME "." EXCEPTION_HANDLED_PART_NAME " value must be "
"either boolean or string '" CACHE_EXCEPTION_HANDLED_CACHE_NAME "'");
} else
info.processed_code=&((Value &)result.processed_code).as_string();
// expiration time not spoiled by ^cache(0) or something?
if(info.scope->expires > time(0)) {
// string -serialize> buffer
String::Cm serialized=info.processed_code->serialize(
sizeof(Data_string_serialized_prolog));
Data_string_serialized_prolog& prolog=
*reinterpret_cast<Data_string_serialized_prolog *>(serialized.str);
prolog.version=DATA_STRING_SERIALIZED_VERSION;
prolog.expires=info.scope->expires;
// buffer -write> file
if(write(f, serialized.str, serialized.length)<0)
throw Exception("file.write", 0, "write failed: %s (%d)", strerror(errno), errno);
} else // expired!
info.scope->expires=0; // flag it so that could be easily checked by caller
}
const String* locked_process_and_cache_put(Request& r,
Value& body_code,
Value* catch_code,
Cache_scope& scope,
const String& file_spec)
{
Locked_process_and_cache_put_action_info info={&r, &scope, &body_code, catch_code, 0};
const String* result=file_write_action_under_lock(
file_spec,
"cache_put",
locked_process_and_cache_put_action,
&info,
false/*as_text*/,
false/*do_append*/,
false/*block == don't wait till other thread release lock*/,
false/*dun throw exception if lock failed*/) ? info.processed_code: 0;
time_t now=time(0);
if(scope.expires<=now)
cache_delete(file_spec);
return result;
}
#ifndef DOXYGEN
struct Cache_get_result {
const String* body;
bool expired;
};
#endif
static Cache_get_result cache_get(const String& file_spec, time_t now) {
Cache_get_result result={0, false};
File_read_result file=file_read_binary(file_spec, false /*fail_on_read_problem*/);
if(file.success && file.length /*ignore reads which are empty due to non-unary open+lockEX conflict with lockSH*/) {
Data_string_serialized_prolog& prolog = *reinterpret_cast<Data_string_serialized_prolog *>(file.str);
String* body=new String;
if(file.length>=sizeof(Data_string_serialized_prolog) && prolog.version==DATA_STRING_SERIALIZED_VERSION) {
if(body->deserialize(sizeof(Data_string_serialized_prolog), file.str, file.length)) {
result.body=body;
result.expired=prolog.expires <= now;
}
}
}
return result;
}
static time_t as_expires(Request& r, MethodParams& params, int index, time_t now) {
time_t result;
if(VDate* vdate=dynamic_cast<VDate*>(¶ms[index]))
result=(time_t)vdate->get_time();
else
result=now+(time_t)params.as_double(index, "lifespan must be date or number", r);
return result;
}
static const String& as_file_spec(Request& r, MethodParams& params, int index) {
return r.full_disk_path(params.as_string(index, "filespec must be string"));
}
static void _cache(Request& r, MethodParams& params) {
if(params.count()==0) {
// ^cache[] -- return current expiration time
Cache_scope* scope=static_cast<Cache_scope*>(r.classes_conf.get(cache_data_name));
if(!scope)
throw Exception(PARSER_RUNTIME, 0, "expire-time get without cache");
r.write(*new VDate((pa_time_t)scope->expires));
return;
}
time_t now=time(0);
if(params.count()==1) {
// ^cache[filename] ^cache(seconds) ^cache[expires date]
if(params[0].is_string()) { // filename?
cache_delete(as_file_spec(r, params, 0));
return;
}
// secods|expires date
Cache_scope* scope=static_cast<Cache_scope*>(r.classes_conf.get(cache_data_name));
if(!scope)
throw Exception(PARSER_RUNTIME,
0,
"expire-time reducing instruction without cache");
time_t expires=as_expires(r, params, 0, now);
if(expires < scope->expires)
scope->expires=expires;
return;
} else if(params.count()<3)
throw Exception(PARSER_RUNTIME,
0,
"invalid number of parameters");
// file_spec, expires, body code
const String& file_spec=as_file_spec(r, params, 0);
Cache_scope scope={as_expires(r, params, 1, now), 0};
Temp_hash_value<HashString<void*>, void*> cache_scope_setter(&r.classes_conf, cache_data_name, &scope);
Value& body_code=params.as_junction(2, "body_code must be code");
Value* catch_code=0;
if(params.count()>3)
catch_code=¶ms.as_junction(3, "catch_code must be code");
if(scope.expires>now) {
Cache_get_result cached=cache_get(file_spec, now);
if(cached.body) { // have cached copy
if(cached.expired) {
scope.body_from_disk=cached.body; // storing for user to retrive it with ^cache[]
} else {
// and it's not expired yet write it out
r.write(*cached.body);
// happy with it
return;
}
}
// no cached info or it's already expired
// trying to process it under lock and store result in file
const String* processed_body=locked_process_and_cache_put(r, body_code, catch_code, scope, file_spec);
if(processed_body){
// write it out
r.write(*processed_body);
// happy with it
return;
} else {
// we fail while get exclusive lock. nvm, we just execute body_code a bit later
}
} else {
// instructed not to cache; forget cached copy
cache_delete(file_spec);
}
// process without caching
if(catch_code){
Try_catch_result result=try_catch(r, process_try_body_code, &body_code, catch_code);
r.write(result.processed_code);
} else {
r.write(r.process_to_string(body_code));
}
}
static void _try_operator(Request& r, MethodParams& params) {
Value& body_code=params.as_junction(0, "body_code must be code");
Value& catch_code=params.as_junction(1, "catch_code must be code");
Value* finally_code=(params.count()==3) ? ¶ms.as_junction(2, "finally_code must be code") : 0;
Try_catch_result result;
try{
// process try and catch code
result=try_catch(r, process_try_body_code, &body_code, &catch_code);
} catch(...){
// process finally code but ignore the result
if(finally_code){
Temp_skip temp(r);
/* Value &finally_result= */ r.process(*finally_code);
}
rethrow;
}
// process finally code
if(finally_code){
Temp_skip temp(r);
Value& finally_result=r.process(*finally_code);
// no exception in try/catch or finally, writing processed body_code or catch_code
r.write(result.processed_code);
// write out processed finally code
r.write(finally_result);
} else {
// no exception in try/catch, writing processed body_code or catch_code
r.write(result.processed_code);
}
}
static void _throw_operator(Request&, MethodParams& params) {
if(params.count()==1 && !params[0].is_string()) {
if(HashStringValue *hash=params[0].get_hash()) {
const char* type=0;
if(Value* value=hash->get(exception_type_part_name))
type=value->as_string().cstr();
const String* source=0;
if(Value* value=hash->get(exception_source_part_name))
source=&value->as_string();
const char* comment=0;
if(Value* value=hash->get(exception_comment_part_name))
comment=value->as_string().cstr();
throw Exception(type, source, "%s", comment); // to avoid MAX_STRING limit
} else
throw Exception(PARSER_RUNTIME, 0, "one-param version has hash or string param");
} else {
const char* type=params.as_string(0, "type must be string").cstr();
const String* source=params.count()>1 ? ¶ms.as_string(1, "source must be string") : 0;
const char* comment=params.count()>2 ? params.as_string(2, "comment must be string").cstr() : 0;
throw Exception(type, source, "%s", comment); // to avoid MAX_STRING limit
}
}
static void _sleep_operator(Request& r, MethodParams& params) {
double seconds=params.as_double(0, "seconds must be double", r);
if(seconds>0)
pa_sleep((int)trunc(seconds), (int)trunc((seconds-trunc(seconds))*1000000));
}
static void _a_operator(Request& r, MethodParams& params) {
VArray& result=*new VArray;
ArrayValue& array=result.array();
int count=params.count();
for(int i=0; i<count; i++)
array+=&r.process(params[i]);
array.confirm_all_used();
r.write(result);
}
#ifdef HAVE_SYSLOG
static int log_level(const String &name){
if(name.is_empty()) return LOG_INFO;
const char *sname = str_upper(name.cstr());
if(!strcmp(sname,"INFO")) return LOG_INFO;
if(!strcmp(sname,"WARNING")) return LOG_WARNING;
if(!strcmp(sname,"ERROR")) return LOG_ERR;
if(!strcmp(sname,"DEBUG")) return LOG_DEBUG;
throw Exception("syslog", &name, "invalid log level value");
}
#endif
static void _syslog_operator(Request& r, MethodParams& params) {
const char* message=params.as_string(1, "message must be string").cstr();
#ifdef HAVE_SYSLOG
const char* ident=params.as_string(0, "ident must be string").cstr();
int level=params.count()>2 ? log_level(params.as_string(2, "level must be string")) : LOG_INFO;
openlog(*ident ? ident : "parser3", LOG_PID, LOG_USER);
syslog(level, "%s", message);
closelog();
(void)r;
#else
SAPI::log(r.sapi_info, "syslog: %s", message);
#endif
}
#if defined(WIN32) && defined(_DEBUG) && !defined(_WIN64)
# define PA_BPT
static void _bpt(Request&, MethodParams&) {
_asm int 3;
}
#endif
// constructor
VClassMAIN::VClassMAIN(): VClass(MAIN_CLASS_NAME) {
#ifdef PA_BPT
// ^bpt[]
add_native_method("bpt", Method::CT_ANY, _bpt, 0, 0);
#endif
// ^if(condition){code-when-true}
// ^if(condition){code-when-true}{code-when-false}
// ^if(condition){code-when-true} (another condition){code-when-true} ... {code-when-false}
add_native_method("if", Method::CT_ANY, _if, 2, 10000, Method::CO_WITHOUT_FRAME);
// ^untaint[as-is|uri|sql|js|html|html-typo|regex|parser-code]{code}
add_native_method("untaint", Method::CT_ANY, _untaint, 1, 2, Method::CO_WITHOUT_FRAME);
// ^taint[as-is|uri|sql|js|html|html-typo|regex|parser-code]{code}
add_native_method("taint", Method::CT_ANY, _taint, 1, 2, Method::CO_WITHOUT_FRAME);
// ^apply-taint[untaint lang][string]
add_native_method("apply-taint", Method::CT_ANY, _apply_taint, 1, 2, Method::CO_WITHOUT_FRAME);
// ^process{code}
// ^process[context]{code}[options hash]
add_native_method("process", Method::CT_ANY, _process, 1, 3);
// ^rem{code}
add_native_method("rem", Method::CT_ANY, _rem, 1, 10000, Method::CO_WITHOUT_FRAME);
// ^while(condition){code}
add_native_method("while", Method::CT_ANY, _while, 2, 3, Method::CO_WITHOUT_FRAME);
// ^use[file[;options hash]]
add_native_method("use", Method::CT_ANY, _use, 1, 2);
// ^break[]
// ^break(condition)
add_native_method("break", Method::CT_ANY, _break, 0, 1, Method::CO_WITHOUT_FRAME);
// ^continue[]
// ^continue(condition)
add_native_method("continue", Method::CT_ANY, _continue, 0, 1, Method::CO_WITHOUT_FRAME);
// ^return[]
// ^return[result]
add_native_method("return", Method::CT_ANY, _return, 0, 1);
// ^for[i](from-number;to-number-inclusive){code}[delim]
add_native_method("for", Method::CT_ANY, _for, 3+1, 3+1+1);
// ^eval(expr)
// ^eval(expr)[format]
add_native_method("eval", Method::CT_ANY, _eval, 1, 2, Method::CO_WITHOUT_FRAME);
// ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s}
add_native_method("connect", Method::CT_ANY, _connect, 2, 2);
// ^cache[file_spec](time){code}[{catch code}] time=0 no cache
// ^cache[file_spec] delete cache
// ^cache[] get current expiration time
add_native_method("cache", Method::CT_ANY, _cache, 0, 4);
// switch
// ^switch[value]{cases}
add_native_method("switch", Method::CT_ANY, _switch, 2, 2, Method::CO_WITHOUT_FRAME);
// ^case[value]{code}
add_native_method("case", Method::CT_ANY, _case, 2, 10000, Method::CO_WITHOUT_FRAME);
// try-catch
// ^try{code}{catch code}
add_native_method("try", Method::CT_ANY, _try_operator, 2, 3, Method::CO_WITHOUT_FRAME);
// ^throw[$exception hash]
// ^throw[type;source;comment]
add_native_method("throw", Method::CT_ANY, _throw_operator, 1, 3);
add_native_method("sleep", Method::CT_ANY, _sleep_operator, 1, 1);
// equivalent to ^array::create[...]
add_native_method("A", Method::CT_ANY, _a_operator, 0, 10000, Method::CO_WITHOUT_FRAME);
// ^syslog[ident;message[;info|warning|error|debug]]
add_native_method("syslog", Method::CT_ANY, _syslog_operator, 2, 3);
}
// constructor & configurator
VStateless_class& VClassMAIN_create() {
return *new VClassMAIN;
}
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