--- parser3/src/classes/file.C 2001/03/19 20:46:35 1.2 +++ parser3/src/classes/file.C 2004/07/26 10:44:21 1.126 @@ -1,38 +1,1047 @@ -/* - Parser - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (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) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ +static const char * const IDENT_FILE_C="$Date: 2004/07/26 10:44:21 $"; + +#include "pa_config_includes.h" + +#include "pcre.h" + +#include "classes.h" +#include "pa_vmethod_frame.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" +#include "pa_charsets.h" +#include "pa_sql_connection.h" +#include "pa_vresponse.h" +#include "pa_vcookie.h" + +// defines + +#define TEXT_MODE_NAME "text" +#define BINARY_MODE_NAME "binary" +#define STDIN_EXEC_PARAM_NAME "stdin" +#define CHARSET_EXEC_PARAM_NAME "charset" + +// class + +class MFile: public Methoded { +public: // VStateless_class + + Value* create_new_value(Pool&) { return new VFile(); } + +public: // Methoded + bool used_directly() { return true; } + +public: + MFile(); + +}; -// global var +// global variable -VStateless_class *file_base_class; +DECLARE_CLASS_VAR(file, new MFile, 0); + +// consts + +/// from apache-1.3|src|support|suexec.c +static const char* suexec_safe_env_lst[]={ + "AUTH_TYPE", + "CONTENT_LENGTH", + "CONTENT_TYPE", + "DATE_GMT", + "DATE_LOCAL", + "DOCUMENT_NAME", + "DOCUMENT_PATH_INFO", + "DOCUMENT_ROOT", + "DOCUMENT_URI", + "FILEPATH_INFO", + "GATEWAY_INTERFACE", + "LAST_MODIFIED", + "PATH_INFO", + "PATH_TRANSLATED", + "QUERY_STRING", + "QUERY_STRING_UNESCAPED", + "REMOTE_ADDR", + "REMOTE_HOST", + "REMOTE_IDENT", + "REMOTE_PORT", + "REMOTE_USER", + "REDIRECT_QUERY_STRING", + "REDIRECT_STATUS", + "REDIRECT_URL", + "REQUEST_METHOD", + "REQUEST_URI", + "SCRIPT_FILENAME", + "SCRIPT_NAME", + "SCRIPT_URI", + "SCRIPT_URL", + "SERVER_ADMIN", + "SERVER_NAME", + "SERVER_ADDR", + "SERVER_PORT", + "SERVER_PROTOCOL", + "SERVER_SOFTWARE", + "UNIQUE_ID", + "USER_NAME", + "TZ", + NULL +}; + +// statics + +static const String::Body adate_name("adate"); +static const String::Body mdate_name("mdate"); +static const String::Body cdate_name("cdate"); // methods -static void _save(Request& r, const String& method_name, Array *params) { - //\Pool& pool=r.pool(); - Value *vfile_name=static_cast(params->get(0)); - // forcing - // ^save{this body type} - r.fail_if_junction_(false, *vfile_name, method_name, "file name must be junction"); +static bool is_text_mode(const String& mode) { + if(mode==TEXT_MODE_NAME) + return true; + if(mode==BINARY_MODE_NAME) + return false; + throw Exception("parser.runtime", + &mode, + "is invalid mode, must be either '"TEXT_MODE_NAME"' or '"BINARY_MODE_NAME"'"); +} + +static void _save(Request& r, 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 + GET_SELF(r, VFile).save(r.absolute(vfile_name.as_string()), + is_text_mode(vmode_name.as_string())); +} + +static void _delete(Request& r, 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, 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 _load_pass_param( + HashStringValue::key_type key, + HashStringValue::value_type value, + HashStringValue *dest) { + dest->put(key, value); +} +static void _load(Request& r, MethodParams& params) { + Value& vmode_name=params. as_no_junction(0, "mode must not be code"); + const String& lfile_name=r.absolute(params.as_no_junction(1, "file name must not be code").as_string()); + Value* third_param=params.count()>2?¶ms.as_no_junction(2, "filename or options must not be code") + :0; + HashStringValue* third_param_hash=third_param?third_param->get_hash():0; + size_t alt_filename_param_index=2; + if(third_param_hash) + alt_filename_param_index++; + + File_read_result file=file_read(r.charsets, lfile_name, + is_text_mode(vmode_name.as_string()), + third_param_hash + ); + + const char *user_file_name=params.count()>alt_filename_param_index? + params.as_string(alt_filename_param_index, "filename must be string").cstr() + :lfile_name.cstr(String::L_FILE_SPEC); + + Value* vcontent_type=0; + if(file.headers) + vcontent_type=file.headers->get(content_type_name); + if(!vcontent_type) + vcontent_type=new VString(r.mime_type_of(user_file_name)); + + VFile& self=GET_SELF(r, VFile); + self.set(true/*tainted*/, file.str, file.length, user_file_name, vcontent_type); + if(file.headers) + file.headers->for_each(_load_pass_param, &self.fields()); +} + +static void _stat(Request& r, MethodParams& params) { + Value& vfile_name=params.as_no_junction(0, "file name must not be code"); - { - Temp_lang temp_lang(r, String::Untaint_lang::FILE); - static_cast(r.self)->save( - r.absolute(r.process(*vfile_name).as_string().cstr())); + 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& self=GET_SELF(r, VFile); + self.set(true/*tainted*/, 0/*no bytes*/, size); + HashStringValue& ff=self.fields(); + ff.put(adate_name, new VDate(atime)); + ff.put(mdate_name, new VDate(mtime)); + ff.put(cdate_name, new VDate(ctime)); + ff.put(content_type_name, new VString(r.mime_type_of(lfile_name.cstr(String::L_FILE_SPEC)))); +} + +static bool is_safe_env_key(const char* key) { + for(const char* validator=key; *validator; validator++) { + char c=*validator; + if(!(c>='A' && c<='Z' || c>='0' && c<='9' || c=='_' || c=='-')) + return false; + } + if(strncasecmp(key, "HTTP_", 5)==0) + return true; + if(strncasecmp(key, "CGI_", 4)==0) + return true; + for(int i=0; suexec_safe_env_lst[i]; i++) { + if(strcasecmp(key, suexec_safe_env_lst[i])==0) + return true; + } + return false; +} +#ifndef DOXYGEN +struct Append_env_pair_info { + HashStringString* env; + Value* vstdin; + Value* vcharset; +}; +#endif +static void append_env_pair( + HashStringValue::key_type akey, + HashStringValue::value_type avalue, + Append_env_pair_info *info) { + if(akey==STDIN_EXEC_PARAM_NAME) { + info->vstdin=avalue; + } else if(akey==CHARSET_EXEC_PARAM_NAME) { + info->vcharset=avalue; + } else { + if(!is_safe_env_key(akey.cstr())) + throw Exception("parser.runtime", + new String(akey, String::L_TAINTED), + "not safe environment variable"); + info->env->put(akey, avalue->as_string().cstr(String::L_UNSPECIFIED)); + } +} +#ifndef DOXYGEN +struct Pass_cgi_header_attribute_info { + Charset* charset; + HashStringValue* fields; + Value* content_type; +}; +#endif +static void pass_cgi_header_attribute( + ArrayString::element_type astring, + Pass_cgi_header_attribute_info* info) { + size_t colon_pos=astring->pos(':'); + if(colon_pos==STRING_NOT_FOUND) { + const String& key=astring->mid(0, colon_pos).change_case( + *info->charset, String::CC_UPPER); + Value* value=new VString(astring->mid(colon_pos+1, astring->length())); + info->fields->put(key, value); + if(key=="CONTENT-TYPE") + info->content_type=value; } } +/// @todo fix `` in perl - they produced flipping consoles and no output to perl +static void _exec_cgi(Request& r, MethodParams& params, + bool cgi) { + + Value& vfile_name=params.as_no_junction(0, "file name must not be code"); + + const String& script_name=r.absolute(vfile_name.as_string()); + + HashStringString env; + #define ECSTR(name, value_cstr) \ + if(value_cstr) \ + env.put( \ + String::Body(#name), \ + String::Body(value_cstr, 0)); \ + // passing SAPI::environment + if(const char *const *pairs=SAPI::environment(r.sapi_info)) { + while(const char* pair=*pairs++) + if(const char* eq_at=strchr(pair, '=')) + if(eq_at[1]) // has value + env.put( + pa_strdup(pair, eq_at-pair), + pa_strdup(eq_at+1, 0)); + } + + // const + ECSTR(GATEWAY_INTERFACE, "CGI/1.1"); + // from Request.info + ECSTR(DOCUMENT_ROOT, r.request_info.document_root); + ECSTR(PATH_TRANSLATED, r.request_info.path_translated); + ECSTR(REQUEST_METHOD, r.request_info.method); + ECSTR(QUERY_STRING, r.request_info.query_string); + ECSTR(REQUEST_URI, r.request_info.uri); + ECSTR(CONTENT_TYPE, r.request_info.content_type); + char content_length_cstr[MAX_NUMBER]; + snprintf(content_length_cstr, MAX_NUMBER, "%u", r.request_info.content_length); + //String content_length(content_length_cstr); + ECSTR(CONTENT_LENGTH, content_length_cstr); + // SCRIPT_* + env.put(String::Body("SCRIPT_NAME"), script_name); + //env.put(String::Body("SCRIPT_FILENAME"), ??&script_name); + + bool stdin_specified=false; + // environment & stdin from param + String *in=new String(); + Charset *charset=0; // default script works raw_in 'source' charset = no transcoding needed + if(params.count()>1) { + Value& venv=params.as_no_junction(1, "env must not be code"); + if(HashStringValue* user_env=venv.get_hash()) { + Append_env_pair_info info={&env, 0, 0}; + user_env->for_each(append_env_pair, &info); + // $.stdin + if(info.vstdin) { + stdin_specified=true; + if(const String* sstdin=info.vstdin->get_string()) { + in->append(*sstdin, String::L_CLEAN, true); + } else + if(VFile* vfile=static_cast(info.vstdin->as("file", false))) + in->append_know_length((const char* )vfile->value_ptr(), vfile->value_size(), String::L_TAINTED); + else + throw Exception("parser.runtime", + 0, + STDIN_EXEC_PARAM_NAME " parameter must be string or file"); + } + // $.charset + if(info.vcharset) + charset=&charsets.get(info.vcharset->as_string() + .change_case(r.charsets.source(), String::CC_UPPER)); + } + } + + // argv from params + ArrayString argv; + if(params.count()>2) { + for(size_t i=2; iANSI transcode on some(.cmd?) programs to + // match silent conversion in OS + + // exec! + PA_exec_result execution= + pa_exec(false/*forced_allow*/, script_name, &env, argv, *in); + + String *real_out=&execution.out; + String *real_err=&execution.err; + // transcode if necessary + if(charset) { + real_out=&Charset::transcode(*real_out, *charset, r.charsets.source()); + real_err=&Charset::transcode(*real_err, *charset, r.charsets.source()); + } + + VFile& self=GET_SELF(r, VFile); + + const String* body=real_out; // ^file:exec + const char* eol_marker=0; size_t eol_marker_size; + const String* header=0; + if(cgi) { // ^file:cgi + // construct with 'out' body and header + size_t dos_pos=real_out->pos("\r\n\r\n", 4); + size_t unix_pos=real_out->pos("\n\n", 2); + + bool unix_header_break; + switch((dos_pos!=STRING_NOT_FOUND?10:00) + (unix_pos!=STRING_NOT_FOUND?01:00)) { + case 10: // dos + unix_header_break=false; + break; + case 01: // unix + unix_header_break=true; + break; + case 11: // dos & unix + unix_header_break=unix_poslength(), real_out->cstr(), + (uint)real_err->length(), real_err->cstr()); + break; //never reached + } + + int header_break_pos; + if(unix_header_break) { + header_break_pos=unix_pos; + eol_marker="\n"; eol_marker_size=1; + } else { + header_break_pos=dos_pos; + eol_marker="\r\n"; eol_marker_size=2; + } + + header=&real_out->mid(0, header_break_pos); + body=&real_out->mid(header_break_pos+eol_marker_size*2, real_out->length()); + } + // body + self.set(false/*not tainted*/, body->cstr(), body->length()); + + // $fields << header + if(header && eol_marker) { + ArrayString rows; + size_t pos_after=0; + header->split(rows, pos_after, eol_marker); + Pass_cgi_header_attribute_info info={0, 0, 0}; + info.charset=&r.charsets.source(); + info.fields=&self.fields(); + rows.for_each(pass_cgi_header_attribute, &info); + if(info.content_type) + self.fields().put(content_type_name, info.content_type); + } + + // $status + self.fields().put(file_status_name, new VInt(execution.status)); + + // $stderr + if(real_err->length()) + self.fields().put( + String::Body("stderr"), + new VString(*real_err)); +} +static void _exec(Request& r, MethodParams& params) { + _exec_cgi(r, params, false); +} +static void _cgi(Request& r, MethodParams& params) { + _exec_cgi(r, params, true); +} + +static void _list(Request& r, MethodParams& params) { + Value& relative_path=params.as_no_junction(0, "path must not be code"); + + const String* regexp; + pcre *regexp_code; + const int ovecsize=(1/*match*/)*3; + int ovector[ovecsize]; + if(params.count()>1) { + regexp=¶ms.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, + r.charsets.source().pcre_tables); + + if(!regexp_code) + throw Exception(0, + ®exp->mid(erroffset, regexp->length()), + "regular expression syntax error - %s", errptr); + } else { + regexp=0; // not used, just to calm down compiler + regexp_code=0; + } + + + const char* absolute_path_cstr=r.absolute(relative_path.as_string()).cstr(String::L_FILE_SPEC); + + Table::columns_type columns(new ArrayString); + *columns+=new String("name"); + Table& table=*new Table(columns); + + LOAD_DIR(absolute_path_cstr, + const char* file_name_cstr=ffblk.ff_name; + size_t file_name_size=strlen(file_name_cstr); + 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) { + Table::element_type row(new ArrayString); + *row+=new String(pa_strdup(file_name_cstr, file_name_size), file_name_size, true); + table+=row; + } + ); + + if(regexp_code) + pcre_free(regexp_code); + + // write out result + r.write_no_lang(*new VTable(&table)); +} + +#ifndef DOXYGEN +struct Lock_execute_body_info { + Request* r; + Value* body_code; +}; +#endif +static void lock_execute_body(int , void *ainfo) { + Lock_execute_body_info& info=*static_cast(ainfo); + // execute body + info.r->write_assign_lang(info.r->process(*info.body_code)); +}; +static void _lock(Request& r, MethodParams& params) { + const String& file_spec=r.absolute(params.as_string(0, "file name must be string")); + Lock_execute_body_info info={ + &r, + ¶ms.as_junction(1, "body must be code") + }; + + file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info); +} + +static int lastposafter(const String& s, size_t after, const char* substr, size_t substr_size, bool beforelast=false) { + size_t size=0; // just to calm down compiler + if(beforelast) + size=s.length(); + size_t at; + while((at=s.pos(String::Body(substr, substr_size), after))!=STRING_NOT_FOUND) { + size_t newafter=at+substr_size/*skip substr*/; + if(beforelast && newafter==size) + break; + after=newafter; + } + + return after; +} + +static void _find(Request& r, MethodParams& params) { + const String& file_name=params.as_no_junction(0, "file name must not be code").as_string(); + const String* file_spec; + if(file_name.first_char()=='/') + file_spec=&file_name; + else + file_spec=&r.relative(r.request_info.uri, file_name); + + // easy way + if(file_readable(r.absolute(*file_spec))) { + r.write_assign_lang(*file_spec); + return; + } + + // monkey way + int after_base_slash=lastposafter(*file_spec, 0, "/", 1); + const String* dirname=&file_spec->mid(0, after_base_slash); + const String& basename=file_spec->mid(after_base_slash, file_spec->length()); + + int after_monkey_slash; + while((after_monkey_slash=lastposafter(*dirname, 0, "/", 1, true))>0) { + String test_name; + test_name<<*(dirname=&dirname->mid(0, after_monkey_slash)); + test_name< /a + // /a/b/ > /a + int afterslash=lastposafter(file_spec, 0, "/", 1, true); + if(afterslash>0) + r.write_assign_lang(file_spec.mid(0, afterslash==1?1:afterslash-1)); + else + r.write_assign_lang(String(".", 1)); +} + +static void _basename(Request& r, MethodParams& params) { + const String& file_spec=params.as_string(0, "file name must be string"); + // /a/some.tar.gz > some.tar.gz + int afterslash=lastposafter(file_spec, 0, "/", 1); + r.write_assign_lang(file_spec.mid(afterslash, file_spec.length())); +} + +static void _justname(Request& r, MethodParams& params) { + const String& file_spec=params.as_string(0, "file name must be string"); + // /a/some.tar.gz > some.tar + int afterslash=lastposafter(file_spec, 0, "/", 1); + int afterdot=lastposafter(file_spec, afterslash, ".", 1); + r.write_assign_lang(file_spec.mid(afterslash, afterdot!=afterslash?afterdot-1:file_spec.length())); +} +static void _justext(Request& r, MethodParams& params) { + const String& file_spec=params.as_string(0, "file name must be string"); + // /a/some.tar.gz > gz + int afterdot=lastposafter(file_spec, 0, ".", 1); + if(afterdot>0) + r.write_assign_lang(file_spec.mid(afterdot, file_spec.length())); +} + +static void _fullpath(Request& r, MethodParams& params) { + const String& file_spec=params.as_string(0, "file name must be string"); + const String* result; + if(file_spec.first_char()=='/') + result=&file_spec; + else { + // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif + const String& full_disk_path=r.absolute(file_spec); + size_t document_root_length=strlen(r.request_info.document_root); + + if(document_root_length>0) { + char last_char=r.request_info.document_root[document_root_length-1]; + if(last_char == '/' || last_char == '\\') + --document_root_length; + } + result=&full_disk_path.mid(document_root_length, full_disk_path.length()); + } + r.write_assign_lang(*result); +} + +static void _sql_string(Request& r, MethodParams&) { + VFile& self=GET_SELF(r, VFile); + + const char *quoted=r.connection()->quote(self.value_ptr(), self.value_size()); + r.write_assign_lang(*new String(quoted)); +} + +#ifndef DOXYGEN +class File_sql_event_handlers: public SQL_Driver_query_event_handlers { + const String& statement_string; const char* statement_cstr; + int got_columns; + int got_cells; +public: + String::C value; + String* user_file_name; + String* user_content_type; +public: + File_sql_event_handlers( + const String& astatement_string, const char* astatement_cstr): + statement_string(astatement_string), statement_cstr(astatement_cstr), + got_columns(0), + got_cells(0), + user_file_name(0), + user_content_type(0) {} + + bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) { + if(got_columns++==3) { + error=SQL_Error("parser.runtime", "result must contain not more then 3 columns"); + return true; + } + return false; + } + bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; } + bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; } + bool add_row_cell(SQL_Error& error, const char* str, size_t length) { + try { + switch(got_cells++) { + case 0: + value=String::C(str, length); + break; + case 1: + user_file_name=new String(str, length, true); + break; + case 2: + user_content_type=new String(str, length, true); + break; + default: + error=SQL_Error("parser.runtime", "result must not contain more then one row, three rows"); + return true; + } + return false; + } catch(...) { + error=SQL_Error("exception occured in File_sql_event_handlers::add_row_cell"); + return true; + } + } +}; +#endif +static void _sql(Request& r, MethodParams& params) { + const String* user_file_name=0; + if(params.get(0)->is_string()) + user_file_name=¶ms.get(0)->as_string(); + + Value& statement=params.as_junction(params.count()-1, "statement must be code"); + + Temp_lang temp_lang(r, String::L_SQL); + const String& statement_string=r.process_to_string(statement); + const char* statement_cstr= + statement_string.cstr(String::L_UNSPECIFIED, r.connection()); + File_sql_event_handlers handlers(statement_string, statement_cstr); + r.connection()->query( + statement_cstr, + 0, 0, + 0, 0, + handlers, + statement_string); + + if(!handlers.value) + throw Exception("parser.runtime", + 0, + "produced no result"); + + if(!user_file_name) +class send_attr_info +{ +public: + send_attr_info(Request *t) : r(t), add_content_type(true), add_last_modified(true), add_content_disposition(true) {} + Request *r; + bool add_content_type; + bool add_last_modified; + bool add_content_disposition; +}; + +static void send_add_header_attribute( + HashStringValue::key_type aattribute, + HashStringValue::value_type ameaning, + send_attr_info *r) +{ + const char *a = aattribute.cstr(); + SAPI::add_header_attribute(r->r->sapi_info, + a, + attributed_meaning_to_string(*ameaning, String::L_HTTP_HEADER, false). + cstr(String::L_UNSPECIFIED)); + if(strcasecmp(a, "content-type")==0) + r->add_content_type = false; + else if(strcasecmp(a, "last-modified")==0) + r->add_last_modified = false; + else if(strcasecmp(a, "content-disposition")==0) + r->add_content_disposition = false; +} + +struct RANGE +{ + size_t start; + size_t end; +}; + +static void parse_range(const String* s, Array &ar) +{ + const char *p = s->cstr(); + if(s->starts_with("bytes=")) + p += 6; + RANGE r; + while(*p){ + r.start = (size_t)-1; + r.end = (size_t)-1; + if(*p >= '0' && *p <= '9'){ + r.start = atol(p); + while(*p>='0' && *p<='9') ++p; + } + if(*p++ != '-') break; + if(*p >= '0' && *p <= '9'){ + r.end = atol(p); + while(*p>='0' && *p<='9') ++p; + } + if(*p == ',') ++p; + ar += r; + } +} + +class auto_file +{ +protected: + FILE *f; +public: + auto_file(FILE *t){ + f = t; + } + ~auto_file(){ + if(f != 0){ + fclose(f); + f = 0; + } + } + operator FILE*(){ + return f; + } +}; + +// ^file:send[filename] +// ^file:send[filename;options hash] +// ^file:send[local_filename;remote_filename] +// ^file:send[local_filename;remote_filename;options hash] +static void _send(Request& r, MethodParams& params) { + SAPI::add_header_attribute(r.sapi_info, "Accept-Ranges", "bytes"); + if(r.response.fields().get("ignore")!=0) throw Exception("parser.runtime", 0, "^file:send not allowed here"); + Value *to_file_name = 0; + Value *options = 0; + Value *from_file_name = params.get(0); + const char *c_from_file_name=0, *disposition=0; + if(!from_file_name->is("string")) throw Exception("parser.runtime", 0, "filename must be string"); + + size_t count = params.count(); + if(count > 1){ + to_file_name = params.get(1); + if(to_file_name->is("hash")){ + options = to_file_name; + to_file_name = 0; + }else if(count > 2){ + options = params.get(2); + if(!options->is("hash")) throw Exception("parser.runtime", 0, "options parameter must be hash"); + } + } + + c_from_file_name=r.absolute(from_file_name->as_string()).cstr(); + + size_t offset = 0; + size_t limit = (size_t)-1; + send_attr_info info(&r); + VDate *date = 0; + + if(options){ + HashStringValue *opts = options->get_hash(); + if(opts == 0) + throw Exception("parser.runtime", 0, "options must be hash"); + Value *v; + int valid_options = 0; + if(v = opts->get("offset")){ + ++valid_options; + offset = v->as_int(); + } + if(v = opts->get("limit")){ + ++valid_options; + limit = v->as_int(); + } + if(v = opts->get("headers")){ + ++valid_options; + HashStringValue *headers = v->get_hash(); + if(headers == 0) + throw Exception("parser.runtime", 0, "headers must be hash"); + headers->for_each(send_add_header_attribute, &info); + } + if(v = opts->get("mdate")){ + ++valid_options; + if(Value* vdate=v->as(VDATE_TYPE, false)) + date=static_cast(vdate); + else throw Exception("parser.runtime", 0, "mdate must be a date"); + } + if(v = opts->get("disposition")){ + ++valid_options; + if(!v->is("string")) throw Exception("parser.runtime", 0, "disposition must be a string"); + disposition = v->get_string()->cstr(); + if(strcmp(disposition, "inline") && strcmp(disposition, "attachment")) throw Exception("parser.runtime", 0, "disposition can be only 'inline' or 'attachment'"); + } + if(valid_options != opts->count()) + throw Exception("parser.runtime", 0, "invalid option passed"); + } + + auto_file f = fopen(c_from_file_name, "rb"); + if(f == 0) + throw Exception("parser.runtime", 0, "Can't open file"); + + if(fseek(f, 0, SEEK_END)!=0) + throw Exception("parser.runtime", 0, "Can't seek file"); + + size_t file_length = (size_t)ftell(f); + if(file_length == (size_t)-1) + throw Exception("parser.runtime", 0, "can't get file size"); + if(file_length <= offset) + throw Exception("parser.runtime", 0, "offset too big"); + + size_t content_length = file_length-offset; + if(limit != (size_t)-1) + content_length = limit ar; + parse_range(new String(range), ar); + size_t count = ar.count(); + if(count == 1){ + RANGE &rg = ar.get_ref(0); + if(rg.start == (size_t)-1 && rg.end == (size_t)-1){ + SAPI::add_header_attribute(r.sapi_info, "status", "416 Requested Range Not Satisfiable"); + return; + } + if(rg.start == (size_t)-1 && rg.end != (size_t)-1){ + rg.start = content_length - rg.end; + rg.end = content_length; + offset += rg.start; + part_length = rg.end-rg.start; + }else if(rg.start != (size_t)-1 && rg.end == (size_t)-1){ + rg.end = content_length-1; + offset += rg.start; + part_length -= rg.start; + } + if(part_length == 0){ + SAPI::add_header_attribute(r.sapi_info, "status", "204 No Content"); + return; + } + SAPI::add_header_attribute(r.sapi_info, "status", "206 Partial Content"); + snprintf((char*)buf, BUFSIZE, "bytes %u-%u/%u", rg.start, rg.end, content_length); + SAPI::add_header_attribute(r.sapi_info, "Content-Range", (char*)buf); + }else if(count != 0){ + SAPI::add_header_attribute(r.sapi_info, "status", "501 Not Implemented"); + return; + } + } + + fseek(f, offset, SEEK_SET); + snprintf((char*)buf, BUFSIZE, "%u", part_length); + SAPI::add_header_attribute(r.sapi_info, "Content-Length", (char*)buf); + + if(info.add_content_disposition && disposition){ + const char *fname = 0; + if(to_file_name){ + fname = to_file_name->as_string().cstr(); + }else{ + const char *fname = c_from_file_name; + const char *p1 = strrchr(fname, '/'); + const char *p2 = strrchr(fname, '\\'); + if(p1 || p2) + fname = max(p1, p2)+1; + } + + snprintf((char*)buf, BUFSIZE, "%s; filename=\"%s\"", disposition, fname); + SAPI::add_header_attribute(r.sapi_info, "Content-Disposition", (char*)buf); + } + if(info.add_content_type) + SAPI::add_header_attribute(r.sapi_info, "Content-Type", r.mime_type_of(c_from_file_name).cstr()); + if(info.add_last_modified){ + if(date == 0){ + struct stat st; + if(stat(c_from_file_name, &st)!=0) throw Exception("parser.runtime", 0, "can't get file stat"); + date = new VDate(st.st_mtime); + } + const String &s = attributed_meaning_to_string(*date, String::L_AS_IS, true); + SAPI::add_header_attribute(r.sapi_info, "Last-Modified", s.cstr()); + } + r.cookie.output_result(r.sapi_info); + SAPI::send_header(r.sapi_info); + + const char* request_method=getenv("REQUEST_METHOD"); + bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; + size_t sent = 0; + if(!header_only){ + size_t to_read = 0; + size_t size = 0; + do{ + to_read = part_lengthcstr(): 0; + + VString* vcontent_type=handlers.user_content_type? + new VString(*handlers.user_content_type) + : user_file_name_cstr? + new VString(r.mime_type_of(user_file_name_cstr)) + : 0; + VFile& self=GET_SELF(r, VFile); + self.set(true/*tainted*/, handlers.value.str, handlers.value.length, user_file_name_cstr, vcontent_type); +} + +// constructor + +MFile::MFile(): Methoded("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); + + // ^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); + + // ^find[file-name] + // ^find[file-name]{when-not-found} + add_native_method("find", Method::CT_STATIC, _find, 1, 2); + + // ^file:dirname[/a/some.tar.gz]=/a + // ^file:dirname[/a/b/]=/a + add_native_method("dirname", Method::CT_STATIC, _dirname, 1, 1); + // ^file:basename[/a/some.tar.gz]=some.tar.gz + + // ^file:send[filename] + // ^file:send[filename;options hash] + // ^file:send[filename;new_filename] + // ^file:send[filename;new_filename;options hash] + add_native_method("send", Method::CT_STATIC, _send, 1, 3); + add_native_method("basename", Method::CT_STATIC, _basename, 1, 1); + // ^file:justname[/a/some.tar.gz]=some.tar + add_native_method("justname", Method::CT_STATIC, _justname, 1, 1); + // ^file:justext[/a/some.tar.gz]=gz + add_native_method("justext", Method::CT_STATIC, _justext, 1, 1); + // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif + add_native_method("fullpath", Method::CT_STATIC, _fullpath, 1, 1); -// initialize + // ^file.sql-string[] + add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0); -void initialize_file_base_class(Pool& pool, VStateless_class& vclass) { - // ^save[file-name] - vclass.add_native_method("save", _save, 1, 1); + // ^file::sql[[alt_name]]{} + add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2); }