--- parser3/src/classes/file.C	2001/03/19 20:46:35	1.2
+++ parser3/src/classes/file.C	2002/04/18 10:50:59	1.80
@@ -1,38 +1,441 @@
-/*
-	Parser
-	Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
-	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
+/** @file
+	Parser: @b file parser class.
 
-	$Id: file.C,v 1.2 2001/03/19 20:46:35 paf Exp $
+	Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
+	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
+
+	$Id: file.C,v 1.80 2002/04/18 10:50:59 paf Exp $
 */
 
+#include "pa_config_includes.h"
+
+#include "pcre.h"
+
+#include "classes.h"
 #include "pa_request.h"
-#include "_file.h"
 #include "pa_vfile.h"
+#include "pa_table.h"
+#include "pa_vint.h"
+#include "pa_exec.h"
+#include "pa_vdate.h"
+#include "pa_dir.h"
+#include "pa_vtable.h"
+#include "pa_charset.h"
+
+// consts
+
+// defines
+
+#define TEXT_MODE_NAME "text"
 
-// global var
+// class
 
-VStateless_class *file_base_class;
+class MFile : public Methoded {
+public: // VStateless_class
+	
+	Value *create_new_value(Pool& pool) { return new(pool) VFile(pool); }
+
+public: // Methoded
+	bool used_directly() { return true; }
+
+public:
+	MFile(Pool& pool);
+
+};
+
+// consts
+
+const int FIND_MONKEY_MAX_HOPS=10;
 
 // methods
 
-static void _save(Request& r, const String& method_name, Array *params) {
-	//\Pool& pool=r.pool();
-	Value *vfile_name=static_cast<Value *>(params->get(0));
-	// forcing
-	// ^save{this body type}
-	r.fail_if_junction_(false, *vfile_name, method_name, "file name must be junction");
+static void _save(Request& r, const String&, MethodParams *params) {
+	Value& vmode_name=params-> as_no_junction(0, "mode must not be code");
+	Value& vfile_name=params->as_no_junction(1, "file name must not be code");
+
+	// save
+	static_cast<VFile *>(r.self)->save(r.absolute(vfile_name.as_string()),
+		vmode_name.as_string()==TEXT_MODE_NAME);
+}
+
+static void _delete(Request& r, const String&, MethodParams *params) {
+	Value& vfile_name=params->as_no_junction(0, "file name must not be code");
+
+	// unlink
+	file_delete(r.absolute(vfile_name.as_string()));
+}
+
+static void _move(Request& r, const String&, MethodParams *params) {
+	Value& vfrom_file_name=params->as_no_junction(0, "from file name must not be code");
+	Value& vto_file_name=params->as_no_junction(1, "to file name must not be code");
+
+	// move
+	file_move(
+		r.absolute(vfrom_file_name.as_string()),
+		r.absolute(vto_file_name.as_string()));
+}
+
+static void _find(Request& r, const String& method_name, MethodParams *params) {
+	Pool& pool=r.pool();
+	Value& vfile_name=params->as_no_junction(0, "file name must not be code");
+
+	const String &lfile_name=vfile_name.as_string();
+
+	// passed file name simply exists in current dir
+	if(file_readable(r.absolute(lfile_name))) {
+		r.write_no_lang(lfile_name);
+		return;
+	}
+
+	// scan .. dirs for result
+	for(int i=0; i<FIND_MONKEY_MAX_HOPS; i++) {
+		String local_test_name(pool);
+		for(int j=0; j<i; j++)
+			local_test_name.APPEND_CONST("../");
+		local_test_name.append(lfile_name, String::UL_CLEAN);
+		if(file_readable(r.absolute(local_test_name))) {
+			r.write_no_lang(*new(pool) String(local_test_name));
+			return;
+		}
+	}
+
+	// not found
+	if(params->size()==2) {
+		Value& not_found_code=params->as_junction(1, "not-found param must be code");
+		r.write_pass_lang(r.process(not_found_code));
+	}
+}
+
+static void _load(Request& r, const String& method_name, MethodParams *params) {
+	Pool& pool=r.pool();
+	Value& vmode_name=params-> as_no_junction(0, "mode must not be code");
+	Value& vfile_name=params->as_no_junction(1, "file name must not be code");
+
+	const String& lfile_name=vfile_name.as_string();
+
+	void *data;  size_t size;
+	file_read(pool, r.absolute(lfile_name), data, size, 
+		vmode_name.as_string()==TEXT_MODE_NAME);
+
+	char *user_file_name=params->size()>2?
+		params->as_string(2, "filename must be string").cstr(String::UL_FILE_SPEC)
+		:lfile_name.cstr(String::UL_FILE_SPEC);
+	
+	static_cast<VFile *>(r.self)->set(true/*tainted*/, data, size, 
+		user_file_name, new(pool) VString(r.mime_type_of(user_file_name)));
+}
+
+static void _stat(Request& r, const String& method_name, MethodParams *params) {
+	Pool& pool=r.pool();
+	Value& vfile_name=params->as_no_junction(0, "file name must not be code");
+
+	const String& lfile_name=vfile_name.as_string();
+
+	size_t size;
+	time_t atime, mtime, ctime;
+	file_stat(r.absolute(lfile_name),
+		size,
+		atime, mtime, ctime);
+	
+	VFile& vfile=*static_cast<VFile *>(r.self);
+	vfile.set(true/*tainted*/, 0/*no bytes*/, size);
+	Hash& ff=vfile.fields();
+	ff.put(*new(pool) String(pool, "adate"), new(pool) VDate(pool, atime));
+	ff.put(*new(pool) String(pool, "mdate"), new(pool) VDate(pool, mtime));
+	ff.put(*new(pool) String(pool, "cdate"), new(pool) VDate(pool, ctime));
+}
+
+static void append_env_pair(const Hash::Key& key, Hash::Val *value, void *info) {
+	Hash& hash=*static_cast<Hash *>(info);
+	hash.put(key, &static_cast<Value *>(value)->as_string());
+}
+
+static void pass_cgi_header_attribute(Array::Item *value, void *info) {
+	String& string=*static_cast<String *>(value);
+	Hash& hash=*static_cast<Hash *>(info);
+	int colon_pos=string.pos(":", 1);
+	if(colon_pos>0)
+		hash.put(string.mid(0, colon_pos), 
+		new(string.pool()) VString(string.mid(colon_pos+1, string.size())));
+}
+/** @todo fix `` in perl - they produced flipping consoles and no output to perl
+	@test EPASS, ECSTR [touched them when optimized hash]
+*/
+static void _exec_cgi(Request& r, const String& method_name, MethodParams *params,
+					  bool cgi) {
+	Pool& pool=r.pool();
+
+	Value& vfile_name=params->as_no_junction(0, "file name must not be code");
+
+	const String& script_name=r.absolute(vfile_name.as_string());
+
+	Hash env(pool);
+	#define ECSTR(name, value_cstr) \
+		String name##key(pool, #name); \
+		String name##value(pool); \
+		if(value_cstr) { \
+			name##value.APPEND_CONST(value_cstr); \
+			env.put(name##key, &name##value); \
+		}
+	#define EPASS(name) \
+		String name##key(pool, #name); \
+		String name##value(pool); \
+		if(const char *value_cstr=SAPI::get_env(pool, #name)) { \
+			name##value.APPEND_CONST(value_cstr); \
+			env.put(name##key, &name##value); \
+		}
+
+	// const
+	ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
+	// from Request.info
+	ECSTR(DOCUMENT_ROOT, r.info.document_root);
+	ECSTR(PATH_TRANSLATED, r.info.path_translated);
+	ECSTR(REQUEST_METHOD, r.info.method);
+	ECSTR(QUERY_STRING, r.info.query_string);
+	ECSTR(REQUEST_URI, r.info.uri);
+	ECSTR(CONTENT_TYPE, r.info.content_type);
+	char content_length_cstr[MAX_NUMBER];  
+	snprintf(content_length_cstr, MAX_NUMBER, "%u", r.info.content_length);
+	String content_length(pool, content_length_cstr);
+	ECSTR(CONTENT_LENGTH, content_length_cstr);
+	ECSTR(HTTP_COOKIE, r.info.cookie);
+	ECSTR(HTTP_USER_AGENT, r.info.user_agent);
+	// passing some SAPI:get_env-s
+	EPASS(SERVER_PROTOCOL);
+	EPASS(SERVER_NAME);
+	EPASS(SERVER_PORT);
+	EPASS(HTTP_REFERER);
+	EPASS(REMOTE_ADDR);
+	EPASS(REMOTE_HOST);
+	EPASS(REMOTE_USER);
+	// SCRIPT_NAME
+	env.put(*new(pool) String(pool, "SCRIPT_NAME"), &script_name);
+#ifdef WIN32
+	// WIN32 shell
+	EPASS(COMSPEC);
+#endif
 
-	{
-		Temp_lang temp_lang(r, String::Untaint_lang::FILE);
-		static_cast<VFile *>(r.self)->save(
-			r.absolute(r.process(*vfile_name).as_string().cstr()));
+	if(params->size()>1) {
+		Value& venv=params->as_no_junction(1, "env must not be code");
+		if(Hash *user_env=venv.get_hash(&method_name))
+			user_env->for_each(append_env_pair, &env);
 	}
+
+	Array *argv=0;
+	if(params->size()>2) {
+		argv=new(pool) Array(pool, params->size()-2);
+		for(int i=2; i<params->size(); i++)
+			*argv+=&params->as_string(i, "parameter must be string");
+	}
+
+	String in(pool);
+	in.APPEND(r.post_data, r.post_size, String::UL_CLEAN, "passing post data", 0);
+	String out(pool);
+	//out.APPEND_CONST("content-type:text/plain\nheader:test-header\n\ntest-body");
+	//out<<in;
+	String& err=*new(pool) String(pool);
+	int status=pa_exec(false/*forced_allow*/, script_name, &env, argv, in, out, err);
+
+	VFile& self=*static_cast<VFile *>(r.self);
+
+	const String *body=&out; // ^file:exec
+	if(cgi) { // ^file:cgi
+		// construct with 'out' body and header
+		int delim_size;
+		const char *eol_marker="\r\n"; size_t eol_marker_size=2;
+		int pos=out.pos("\r\n\r\n", delim_size=4);
+		if(pos<0) {
+			eol_marker="\n"; eol_marker_size=1;
+			pos=out.pos("\n\n", delim_size=2);
+		}
+		if(pos<0) {
+			delim_size=0; // calm down, compiler
+			throw Exception(0,
+				&method_name,
+				"output does not contain CGI header; exit status=%d; stdoutsize=%u; stdout: \"%s\"; stderrsize=%u; stderr: \"%s\"", 
+					status, 
+					(uint)out.size(), out.cstr(),
+					(uint)err.size(), err.cstr());
+		}
+
+		const String& header=out.mid(0, pos);
+		body=&out.mid(pos+delim_size, out.size());
+
+		// header to $fields
+		{
+			Array rows(pool);
+			header.split(rows, 0, eol_marker, eol_marker_size, String::UL_CLEAN);
+			rows.for_each(pass_cgi_header_attribute, &self.fields());
+		}
+	}
+	// body
+	self.set(false/*not tainted*/, body->cstr(), body->size());
+
+	// $status
+	self.fields().put(
+		*new(pool) String(pool, "status"),
+		new(pool) VInt(pool, status));
+	
+	// $stderr
+	if(err.size()) {
+		self.fields().put(
+			*new(pool) String(pool, "stderr"),
+			new(pool) VString(err));
+
+		SAPI::log(pool, "file:%s: %s", cgi?"cgi":"exec", err.cstr());
+	}
+}
+static void _exec(Request& r, const String& method_name, MethodParams *params) {
+	_exec_cgi(r, method_name, params, false);
+}
+static void _cgi(Request& r, const String& method_name, MethodParams *params) {
+	_exec_cgi(r, method_name, params, true);
+}
+
+static void _list(Request& r, const String& method_name, MethodParams *params) {
+	Pool& pool=r.pool();
+
+	Value& relative_path=params->as_no_junction(0, "path must not be code");
+
+	const String *regexp;
+	pcre *regexp_code;
+	int ovecsize;
+	int *ovector;
+	if(params->size()>1) {
+		regexp=&params->as_no_junction(1, "regexp must not be code").as_string();
+
+		const char *pattern=regexp->cstr();
+		const char *errptr;
+		int erroffset;
+		regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL, 
+			&errptr, &erroffset, 
+			pool.get_client_charset().pcre_tables);
+
+		if(!regexp_code)
+			throw Exception(0, 
+				&regexp->mid(erroffset, regexp->size()), 
+				"regular expression syntax error - %s", errptr);
+
+		ovector=(int *)pool.malloc(sizeof(int)*(ovecsize=(1/*match*/)*3));
+	} else 
+		regexp_code=0;
+
+
+	const char* absolute_path_cstr=r.absolute(relative_path.as_string())
+		.cstr(String::UL_FILE_SPEC);
+
+	Array& columns=*new(pool) Array(pool);
+	columns+=new(pool) String(pool, "name");	
+	Table& table=*new(pool) Table(pool, &method_name, &columns);
+
+	LOAD_DIR(absolute_path_cstr, 
+		size_t file_name_size=strlen(ffblk.ff_name);
+		bool suits=true;
+		if(regexp_code) {
+			int exec_result=pcre_exec(regexp_code, 0, 
+				ffblk.ff_name, file_name_size, 0, 
+				0, ovector, ovecsize);
+			
+			if(exec_result==PCRE_ERROR_NOMATCH)
+				suits=false;
+			else if(exec_result<0) {
+				(*pcre_free)(regexp_code);
+				throw Exception(0, 
+					regexp, 
+					"regular expression execute (%d)", 
+						exec_result);
+			}
+		}
+
+		if(suits) {
+			char *file_name_cstr=(char *)pool.malloc(file_name_size);
+			memcpy(file_name_cstr, ffblk.ff_name, file_name_size);
+			String &file_name=*new(pool) String(pool);
+			file_name.APPEND(file_name_cstr, file_name_size, String::UL_FILE_SPEC, 
+				method_name.origin().file, method_name.origin().line);
+		
+			Array& row=*new(pool) Array(pool);
+			row+=&file_name;
+			table+=&row;
+		}
+	);
+
+	if(regexp_code)
+		(*pcre_free)(regexp_code);
+
+	// write out result
+	VTable& result=*new(pool) VTable(pool, &table);
+	r.write_no_lang(result);
+}
+
+#ifndef DOXYGEN
+struct Lock_execute_body_info {
+	Request *r;
+	Value *body_code;
+};
+#endif
+static void lock_execute_body(int , void *context) {
+	Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(context);
+
+	// execute body
+	info.r->write_assign_lang(info.r->process(*info.body_code));
+};
+static void _lock(Request& r, const String& method_name, MethodParams *params) {
+	const String& file_spec=r.absolute(params->as_string(0, "file name must be string"));
+	Value& body_code=params->as_junction(1, "body must be code");
+
+	Lock_execute_body_info info={&r, &body_code};
+	file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
 }
 
-// initialize
+// constructor
+
+MFile::MFile(Pool& apool) : Methoded(apool, "file") {
+	// ^save[mode;file-name]
+	add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
+
+	// ^delete[file-name]
+	add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
+
+	// ^move[from-file-name;to-file-name]
+	add_native_method("move", Method::CT_STATIC, _move, 2, 2);
+
+	// ^find[file-name]
+	// ^find[file-name]{when-not-found}
+	add_native_method("find", Method::CT_STATIC, _find, 1, 2);
+
+	// ^load[mode;disk-name]
+	// ^load[mode;disk-name;user-name]
+	add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
+
+	// ^stat[disk-name]
+	add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
+
+	// ^cgi[file-name]
+	// ^cgi[file-name;env hash]
+	// ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
+	add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
+
+	// ^exec[file-name]
+	// ^exec[file-name;env hash]
+	// ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
+	add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
+
+	// ^file:list[path]
+	// ^file:list[path][regexp]
+	add_native_method("list", Method::CT_STATIC, _list, 1, 2);
+
+	// ^file:lock[path]{code}
+	add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
+
+}
+
+// global variable
+
+Methoded *file_class;
+
+// creator
 
-void initialize_file_base_class(Pool& pool, VStateless_class& vclass) {
-	// ^save[file-name]
-	vclass.add_native_method("save", _save, 1, 1);
+Methoded *MFile_create(Pool& pool) {
+	return file_class=new(pool) MFile(pool);
 }