/* js_file.c */ /* Synchronet JavaScript "File" Object */ /* $Id$ */ /**************************************************************************** * @format.tab-size 4 (Plain Text/Source Code File Header) * * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) * * * * Copyright 2001 Rob Swindell - http://www.synchro.net/copyright.html * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of the GNU General Public License * * as published by the Free Software Foundation; either version 2 * * of the License, or (at your option) any later version. * * See the GNU General Public License for more details: gpl.txt or * * http://www.fsf.org/copyleft/gpl.html * * * * Anonymous FTP access to the most recent released source is available at * * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net * * * * Anonymous CVS access to the development source and modification history * * is available at cvs.synchro.net:/cvsroot/sbbs, example: * * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login * * (just hit return, no password is necessary) * * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src * * * * For Synchronet coding style and modification guidelines, see * * http://www.synchro.net/source.html * * * * You are encouraged to submit any modifications (preferably in Unix diff * * format) via e-mail to mods@synchro.net * * * * Note: If this box doesn't appear square, then you need to fix your tabs. * ****************************************************************************/ #include "sbbs.h" #ifdef JAVASCRIPT typedef struct { FILE* fp; char name[MAX_PATH+1]; char mode[4]; uchar etx; BOOL external; /* externally created, don't close */ BOOL debug; } private_t; static void dbprintf(BOOL error, private_t* p, char* fmt, ...) { va_list argptr; char sbuf[1024]; if(p==NULL || (!p->debug && !error)) return; va_start(argptr,fmt); vsprintf(sbuf,fmt,argptr); va_end(argptr); lprintf("%04u File %s%s",p->fp ? fileno(p->fp) : 0,error ? "ERROR: ":"",sbuf); } /* File Constructor (creates file descriptor) */ static JSBool js_file_constructor(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { JSString* str; private_t* p; if((str = JS_ValueToString(cx, argv[0]))==NULL) { dbprintf(TRUE, 0, "no filename specified"); return(JS_FALSE); } *rval = JSVAL_VOID; if((p=(private_t*)calloc(1,sizeof(private_t)))==NULL) { dbprintf(TRUE, 0, "open_file malloc failed"); return(JS_FALSE); } sprintf(p->name,"%.*s",sizeof(p->name)-1,JS_GetStringBytes(str)); if(!JS_SetPrivate(cx, obj, p)) { dbprintf(TRUE, p, "JS_SetPrivate failed"); return(JS_FALSE); } dbprintf(FALSE, p, "object constructed"); return(JS_TRUE); } /* File Destructor */ static void js_finalize_file(JSContext *cx, JSObject *obj) { private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return; if(p->external==JS_FALSE && p->fp!=NULL) fclose(p->fp); dbprintf(FALSE, p, "closed: %s",p->name); free(p); JS_SetPrivate(cx, obj, NULL); } /* File Object Methods */ static JSBool js_open(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { char* mode="w+"; /* default mode */ uintN i; jsint bufsize=2*1024; JSString* str; private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_TRUE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp!=NULL) return(JS_TRUE); for(i=0;i<argc;i++) { if(JSVAL_IS_STRING(argv[i])) { /* mode */ if((str = JS_ValueToString(cx, argv[i]))==NULL) { dbprintf(TRUE, 0, "invalid mode specified"); return(JS_FALSE); } mode=JS_GetStringBytes(str); } else JS_ValueToInt32(cx,argv[i],&bufsize); } sprintf(p->mode,"%.*s",sizeof(p->mode)-1,mode); if((p->fp=fopen(p->name,p->mode))==NULL) *rval = BOOLEAN_TO_JSVAL(JS_FALSE); else { dbprintf(FALSE, p, "opened: %s",p->name); if(!bufsize) setvbuf(p->fp,NULL,_IONBF,0); /* no buffering */ else setvbuf(p->fp,NULL,_IOFBF,bufsize); } return(JS_TRUE); } static JSBool js_close(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); *rval = JSVAL_VOID; if(p->fp==NULL) return(JS_TRUE); fclose(p->fp); dbprintf(FALSE, p, "closed"); p->fp=NULL; return(JS_TRUE); } static JSBool js_read(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { char* cp; char* buf; int len=512; JSString* str; private_t* p; *rval = JSVAL_NULL; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(argc) len = JSVAL_TO_INT(argv[0]); if((buf=malloc(len+1))==NULL) return(JS_TRUE); len = fread(buf,1,len,p->fp); if(len<0) len=0; buf[len]=0; if(p->etx) { cp=strchr(buf,p->etx); if(cp) *cp=0; } str = JS_NewStringCopyZ(cx, buf); free(buf); *rval = STRING_TO_JSVAL(str); dbprintf(FALSE, p, "read %u bytes",len); return(JS_TRUE); } static JSBool js_readln(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { char* cp; char* buf; ulong len=512; private_t* p; *rval = JSVAL_NULL; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(argc) len = JSVAL_TO_INT(argv[0]); if((buf=malloc(len))==NULL) return(JS_TRUE); if(fgets(buf,len,p->fp)!=NULL) { truncsp(buf); if(p->etx) { cp=strchr(buf,p->etx); if(cp) *cp=0; } *rval = STRING_TO_JSVAL(JS_NewStringCopyZ(cx,buf)); } free(buf); return(JS_TRUE); } static JSBool js_readbin(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { BYTE b; WORD w; DWORD l; size_t size=sizeof(DWORD); private_t* p; *rval = JSVAL_TO_INT(-1); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(argc) size = JSVAL_TO_INT(argv[0]); switch(size) { case sizeof(BYTE): if(fread(&b,1,size,p->fp)==size) *rval = INT_TO_JSVAL(b); break; case sizeof(WORD): if(fread(&w,1,size,p->fp)==size) *rval = INT_TO_JSVAL(w); break; case sizeof(DWORD): if(fread(&l,1,size,p->fp)==size) *rval = INT_TO_JSVAL(l); break; } return(JS_TRUE); } static JSBool js_readall(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { jsint len=0; jsval line; JSObject* array; private_t* p; *rval = JSVAL_NULL; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); array = JS_NewArrayObject(cx, 0, NULL); while(!feof(p->fp)) { js_readln(cx, obj, 0, NULL, &line); if(line==JSVAL_NULL) break; if(!JS_SetElement(cx, array, len++, &line)) break; } *rval = OBJECT_TO_JSVAL(array); return(JS_TRUE); } static JSBool js_write(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { char* cp; size_t len; /* string length */ size_t tlen; /* total length to write (may be greater than len) */ JSString* str; private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_FALSE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(!argc) return(JS_FALSE); str = JS_ValueToString(cx, argv[0]); cp = JS_GetStringBytes(str); len = strlen(cp); tlen = len; if(argc>1) { tlen=JSVAL_TO_INT(argv[1]); if(len>tlen) len=tlen; } if(fwrite(cp,1,len,p->fp)==len) { if(tlen>len) { len=tlen-len; if((cp=malloc(len))==NULL) { dbprintf(TRUE, p, "malloc failure of %u bytes", len); *rval = BOOLEAN_TO_JSVAL(JS_FALSE); return(JS_TRUE); } memset(cp,p->etx,len); fwrite(cp,1,len,p->fp); free(cp); } dbprintf(FALSE, p, "wrote %u bytes",tlen); *rval = BOOLEAN_TO_JSVAL(JS_TRUE); } else dbprintf(TRUE, p, "write of %u bytes failed",len); return(JS_TRUE); } static JSBool js_writeln(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { char* cp=""; JSString* str; private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_FALSE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(argc) { if((str = JS_ValueToString(cx, argv[0]))==NULL) return(JS_FALSE); cp = JS_GetStringBytes(str); } if(fprintf(p->fp,"%s\n",cp)!=0) *rval = BOOLEAN_TO_JSVAL(JS_TRUE); return(JS_TRUE); } static JSBool js_writebin(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { BYTE b; WORD w; DWORD l; size_t wr=0; size_t size=sizeof(DWORD); private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_FALSE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(argc>1) size = JSVAL_TO_INT(argv[1]); switch(size) { case sizeof(BYTE): b = (BYTE)JSVAL_TO_INT(argv[0]); wr=fwrite(&b,1,size,p->fp); break; case sizeof(WORD): w = (WORD)JSVAL_TO_INT(argv[0]); wr=fwrite(&w,1,size,p->fp); break; case sizeof(DWORD): l = JSVAL_TO_INT(argv[0]); wr=fwrite(&l,1,size,p->fp); break; default: /* unknown size */ dbprintf(TRUE, p, "unsupported binary write size: %d",size); break; } if(wr==size) *rval = BOOLEAN_TO_JSVAL(JS_TRUE); return(JS_TRUE); } static JSBool js_writeall(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { jsuint i; jsuint limit; JSObject* array; jsval elemval; private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_FALSE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(!JS_IsArrayObject(cx, JSVAL_TO_OBJECT(argv[0]))) return(JS_TRUE); array = JSVAL_TO_OBJECT(argv[0]); JS_GetArrayLength(cx, array, &limit); *rval = BOOLEAN_TO_JSVAL(JS_TRUE); for(i=0;i<limit;i++) { if(!JS_GetElement(cx, array, i, &elemval)) break; js_writeln(cx, obj, 1, &elemval, rval); if(*rval!=BOOLEAN_TO_JSVAL(JS_TRUE)) break; } return(JS_TRUE); } static JSBool js_lock(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_FALSE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(lock(fileno(p->fp),JSVAL_TO_INT(argv[0]),JSVAL_TO_INT(argv[1]))==0) *rval = BOOLEAN_TO_JSVAL(JS_TRUE); return(JS_TRUE); } static JSBool js_unlock(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { private_t* p; *rval = BOOLEAN_TO_JSVAL(JS_FALSE); if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) return(JS_TRUE); if(unlock(fileno(p->fp),JSVAL_TO_INT(argv[0]),JSVAL_TO_INT(argv[1]))==0) *rval = BOOLEAN_TO_JSVAL(JS_TRUE); return(JS_TRUE); } static JSBool js_delete(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp!=NULL) { /* close it if it's open */ fclose(p->fp); p->fp=NULL; } *rval = BOOLEAN_TO_JSVAL(remove(p->name)==0); return(JS_TRUE); } static JSBool js_flush(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) *rval = BOOLEAN_TO_JSVAL(JS_FALSE); else *rval = BOOLEAN_TO_JSVAL(fflush(p->fp)==0); return(JS_TRUE); } static JSBool js_clear_error(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval) { private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); if(p->fp==NULL) *rval = BOOLEAN_TO_JSVAL(JS_FALSE); else { clearerr(p->fp); *rval = BOOLEAN_TO_JSVAL(JS_TRUE); } return(JS_TRUE); } /* File Object Properites */ enum { FILE_PROP_NAME ,FILE_PROP_MODE ,FILE_PROP_ETX ,FILE_PROP_EXISTS ,FILE_PROP_DATE ,FILE_PROP_IS_OPEN ,FILE_PROP_EOF ,FILE_PROP_ERROR ,FILE_PROP_DESCRIPTOR ,FILE_PROP_DEBUG ,FILE_PROP_POSITION ,FILE_PROP_LENGTH ,FILE_PROP_ATTRIBUTES }; static JSBool js_file_set(JSContext *cx, JSObject *obj, jsval id, jsval *vp) { jsint tiny; private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); tiny = JSVAL_TO_INT(id); dbprintf(FALSE, p, "setting property %d",tiny); switch(tiny) { case FILE_PROP_DEBUG: p->debug = JSVAL_TO_BOOLEAN(*vp); break; case FILE_PROP_POSITION: if(p->fp!=NULL) fseek(p->fp,JSVAL_TO_INT(*vp),SEEK_SET); break; case FILE_PROP_LENGTH: if(p->fp!=NULL) chsize(fileno(p->fp),JSVAL_TO_INT(*vp)); break; case FILE_PROP_ATTRIBUTES: CHMOD(p->name,JSVAL_TO_INT(*vp)); break; case FILE_PROP_ETX: p->etx = (uchar)JSVAL_TO_INT(*vp); break; } return(JS_TRUE); } static JSBool js_file_get(JSContext *cx, JSObject *obj, jsval id, jsval *vp) { jsint tiny; private_t* p; if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) return(JS_FALSE); tiny = JSVAL_TO_INT(id); #if 0 /* just too much */ dbprintf(FALSE, sock, "getting property %d",tiny); #endif switch(tiny) { case FILE_PROP_NAME: *vp = STRING_TO_JSVAL(JS_NewStringCopyZ(cx, p->name)); break; case FILE_PROP_MODE: *vp = STRING_TO_JSVAL(JS_NewStringCopyZ(cx, p->mode)); break; case FILE_PROP_EXISTS: if(p->fp) /* open? */ *vp = BOOLEAN_TO_JSVAL(JS_TRUE); else *vp = BOOLEAN_TO_JSVAL(fexist(p->name)); break; case FILE_PROP_DATE: *vp = INT_TO_JSVAL(fdate(p->name)); break; case FILE_PROP_IS_OPEN: *vp = BOOLEAN_TO_JSVAL(p->fp!=NULL); break; case FILE_PROP_EOF: if(p->fp) *vp = BOOLEAN_TO_JSVAL(feof(p->fp)!=0); else *vp = BOOLEAN_TO_JSVAL(JS_TRUE); break; case FILE_PROP_ERROR: if(p->fp) *vp = INT_TO_JSVAL(ferror(p->fp)); else *vp = INT_TO_JSVAL(0); break; case FILE_PROP_POSITION: if(p->fp) *vp = INT_TO_JSVAL(ftell(p->fp)); else *vp = INT_TO_JSVAL(-1); break; case FILE_PROP_LENGTH: if(p->fp) /* open? */ *vp = INT_TO_JSVAL(filelength(fileno(p->fp))); else *vp = INT_TO_JSVAL(flength(p->name)); break; case FILE_PROP_ATTRIBUTES: *vp = INT_TO_JSVAL(getfattr(p->name)); break; case FILE_PROP_DEBUG: *vp = INT_TO_JSVAL(p->debug); break; case FILE_PROP_DESCRIPTOR: if(p->fp) *vp = INT_TO_JSVAL(fileno(p->fp)); else *vp = INT_TO_JSVAL(-1); break; case FILE_PROP_ETX: *vp = INT_TO_JSVAL(p->etx); break; } return(TRUE); } #define FILE_PROP_FLAGS JSPROP_ENUMERATE|JSPROP_READONLY static struct JSPropertySpec js_file_properties[] = { /* name ,tinyid ,flags, getter, setter */ { "name" ,FILE_PROP_NAME ,FILE_PROP_FLAGS, NULL,NULL}, { "mode" ,FILE_PROP_MODE ,FILE_PROP_FLAGS, NULL,NULL}, { "exists" ,FILE_PROP_EXISTS ,FILE_PROP_FLAGS, NULL,NULL}, { "date" ,FILE_PROP_DATE ,FILE_PROP_FLAGS, NULL,NULL}, { "is_open" ,FILE_PROP_IS_OPEN ,FILE_PROP_FLAGS, NULL,NULL}, { "eof" ,FILE_PROP_EOF ,FILE_PROP_FLAGS, NULL,NULL}, { "error" ,FILE_PROP_ERROR ,FILE_PROP_FLAGS, NULL,NULL}, { "descriptor" ,FILE_PROP_DESCRIPTOR ,FILE_PROP_FLAGS, NULL,NULL}, /* writeable */ { "etx" ,FILE_PROP_ETX ,JSPROP_ENUMERATE, NULL,NULL}, { "debug" ,FILE_PROP_DEBUG ,JSPROP_ENUMERATE, NULL,NULL}, { "position" ,FILE_PROP_POSITION ,JSPROP_ENUMERATE, NULL,NULL}, { "length" ,FILE_PROP_LENGTH ,JSPROP_ENUMERATE, NULL,NULL}, { "attributes" ,FILE_PROP_ATTRIBUTES ,JSPROP_ENUMERATE, NULL,NULL}, {0} }; static JSClass js_file_class = { "File" /* name */ ,JSCLASS_HAS_PRIVATE /* flags */ ,JS_PropertyStub /* addProperty */ ,JS_PropertyStub /* delProperty */ ,js_file_get /* getProperty */ ,js_file_set /* setProperty */ ,JS_EnumerateStub /* enumerate */ ,JS_ResolveStub /* resolve */ ,JS_ConvertStub /* convert */ ,js_finalize_file /* finalize */ }; static JSFunctionSpec js_file_functions[] = { {"open", js_open, 1}, /* open file (w/mode) [buffered] */ {"close", js_close, 0}, /* close file */ {"delete", js_delete, 0}, /* delete the file */ {"remove", js_delete, 0}, /* delete the file */ {"clear_error", js_clear_error, 0}, /* clear error */ {"clearError", js_clear_error, 0}, /* clear error */ {"flush", js_flush, 0}, /* flush buffers */ {"lock", js_lock, 2}, /* lock offset, length */ {"unlock", js_unlock, 2}, /* unlock offset, length */ {"read", js_read, 0}, /* read a string [length] */ {"readln", js_readln, 0}, /* read a \n terminated string */ {"readBin", js_readbin, 0}, /* read an integer (length) */ {"readAll", js_readall, 0}, /* read all lines into an array */ {"write", js_write, 1}, /* write a string [length] */ {"writeln", js_writeln, 0}, /* write a \n terminated string */ {"writeBin", js_writebin, 1}, /* read an integer (length) */ {"writeAll", js_writeall, 0}, /* write array of strings to file */ {0} }; JSObject* DLLCALL js_CreateFileClass(JSContext* cx, JSObject* parent) { JSObject* sockobj; sockobj = JS_InitClass(cx, parent, NULL ,&js_file_class ,js_file_constructor ,0 /* number of constructor args */ ,js_file_properties ,js_file_functions ,NULL,NULL); return(sockobj); } JSObject* DLLCALL js_CreateFileObject(JSContext* cx, JSObject* parent, char *name, FILE* fp) { JSObject* obj; private_t* p; obj = JS_DefineObject(cx, parent, name, &js_file_class, NULL, 0); if(obj==NULL) return(NULL); if(!JS_DefineProperties(cx, obj, js_file_properties)) return(NULL); if (!JS_DefineFunctions(cx, obj, js_file_functions)) return(NULL); if((p=(private_t*)calloc(1,sizeof(private_t)))==NULL) return(NULL); p->fp=fp; p->debug=JS_FALSE; p->external=JS_TRUE; if(!JS_SetPrivate(cx, obj, p)) { dbprintf(TRUE, p, "JS_SetPrivate failed"); return(NULL); } dbprintf(FALSE, p, "object created"); return(obj); } #endif /* JAVSCRIPT */