the procedure insert Buffer into SmbiosTable by copy and update Field the Buffer restricted by zero or by space
| 283 | // the procedure insert Buffer into SmbiosTable by copy and update Field |
| 284 | // the Buffer restricted by zero or by space |
| 285 | EFI_STATUS UpdateSmbiosString(OUT APPLE_SMBIOS_STRUCTURE_POINTER SmbiosTableN, |
| 286 | SMBIOS_TABLE_STRING* Field, const XString8& Buffer) |
| 287 | { |
| 288 | CHAR8* AString; |
| 289 | CHAR8* C1; //pointers for copy |
| 290 | CHAR8* C2; |
| 291 | UINTN Length = SmbiosTableLength(SmbiosTableN); |
| 292 | UINTN ALength, BLength; |
| 293 | UINT8 IndexStr = 1; |
| 294 | |
| 295 | if ((SmbiosTableN.Raw == NULL) || Buffer.isEmpty() || !Field) { |
| 296 | return EFI_NOT_FOUND; |
| 297 | } |
| 298 | AString = (CHAR8*)(SmbiosTableN.Raw + SmbiosTableN.Hdr->Length); //first string |
| 299 | while (IndexStr != *Field) { |
| 300 | if (*AString) { |
| 301 | IndexStr++; |
| 302 | } |
| 303 | while (*AString != 0) AString++; //skip string at index |
| 304 | AString++; //next string |
| 305 | if (*AString == 0) { |
| 306 | //this is end of the table |
| 307 | if (*Field == 0) { |
| 308 | AString[1] = 0; //one more zero |
| 309 | } |
| 310 | *Field = IndexStr; //index of the next string that is empty |
| 311 | if (IndexStr == 1) { |
| 312 | AString--; //first string has no leading zero |
| 313 | } |
| 314 | break; |
| 315 | } |
| 316 | } |
| 317 | // AString is at place to copy |
| 318 | ALength = iStrLen(AString, 0); |
| 319 | BLength = iStrLen(Buffer.c_str(), MAX_OEM_STRING); |
| 320 | // DBG("Table type %d field %d\n", SmbiosTable.Hdr->Type, *Field); |
| 321 | // DBG("Old string length=%d new length=%d\n", ALength, BLength); |
| 322 | if (BLength > ALength) { |
| 323 | //Shift right |
| 324 | C1 = (CHAR8*)SmbiosTableN.Raw + Length; //old end |
| 325 | C2 = C1 + BLength - ALength; //new end |
| 326 | *C2 = 0; |
| 327 | while (C1 != AString) *(--C2) = *(--C1); |
| 328 | |
| 329 | } else if (BLength < ALength) { |
| 330 | //Shift left |
| 331 | C1 = AString + ALength; //old start |
| 332 | C2 = AString + BLength; //new start |
| 333 | while (C1 != ((CHAR8*)SmbiosTableN.Raw + Length)) { |
| 334 | *C2++ = *C1++; |
| 335 | } |
| 336 | *C2 = 0; |
| 337 | *(--C2) = 0; //end of table |
| 338 | } |
| 339 | CopyMem(AString, Buffer.c_str(), BLength); |
| 340 | *(AString + BLength) = 0; // not sure there is 0 |
| 341 | |
| 342 | return EFI_SUCCESS; |
no test coverage detected