Leaked source code of windows server 2003
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124 lines
3.5 KiB

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include "prodids.h"
#include "version.h"
void
StoreName(PUCHAR sz, PIMAGE_SYMBOL psym, PULONG pcbStrings)
{
memset((void *)&psym->N.Name, 0, (size_t)sizeof(psym->N.Name));
if (strlen(sz) <= IMAGE_SIZEOF_SHORT_NAME) {
strncpy((char *)psym->N.ShortName, (char *)sz, IMAGE_SIZEOF_SHORT_NAME);
} else {
psym->N.Name.Long = *pcbStrings;
*pcbStrings += strlen(sz) + 1;
}
}
int main(int argc, char **argv)
{
PUCHAR szFrom, szTo, szFilename;
FILE *pfile;
IMAGE_FILE_HEADER hdr;
IMAGE_SYMBOL sym;
IMAGE_AUX_SYMBOL aux;
ULONG cbStrings, foStringTable;
IMAGE_SECTION_HEADER sec;
DWORD dwProdid;
if (argc != 4) {
printf("usage: ALIASOBJ from-name to-name output-filename\n");
exit(1);
}
szFrom = argv[1];
szTo = argv[2];
szFilename = argv[3];
if ((pfile = fopen(szFilename, "wb")) == NULL) {
printf("can't open file \"%s\"\n", szFilename);
exit(1);
}
hdr.Machine = IMAGE_FILE_MACHINE_UNKNOWN;
hdr.NumberOfSections = 1;
hdr.TimeDateStamp = (DWORD) time(NULL);
hdr.PointerToSymbolTable = sizeof(hdr) + sizeof(sec);
hdr.NumberOfSymbols = 4;
hdr.SizeOfOptionalHeader = 0;
hdr.Characteristics = 0;
fwrite(&hdr, sizeof(hdr), 1, pfile);
// Generate one section header. This is necessary because of a link bug (vce:182)
// which fails for .obj's with 0 sections and unknown machine type.
//
memset(&sec, 0, sizeof(sec));
strcpy(sec.Name, ".text");
sec.Characteristics = IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_EXECUTE;
fwrite(&sec, sizeof(sec), 1, pfile);
cbStrings = sizeof(ULONG); // make room for stringtab size
#if (rmj == 7) && (rmm == 0)
dwProdid = DwProdidFromProdidWBuild(prodidAliasObj70, rup);
#else
#error PRODID needs to be assigned
#endif
memset(sym.N.ShortName, 0, sizeof(sym.N.ShortName));
strncpy((char *) sym.N.ShortName, symProdIdentName, IMAGE_SIZEOF_SHORT_NAME);
sym.Value = dwProdid;
sym.SectionNumber = symProdIdentSection;
sym.Type = IMAGE_SYM_TYPE_NULL;
sym.StorageClass = symProdIdentClass;
sym.NumberOfAuxSymbols = 0;
fwrite(&sym, sizeof(sym), 1, pfile);
StoreName(szTo, &sym, &cbStrings);
sym.Value = 0;
sym.SectionNumber = IMAGE_SYM_UNDEFINED;
sym.Type = IMAGE_SYM_TYPE_NULL;
sym.StorageClass = IMAGE_SYM_CLASS_EXTERNAL;
sym.NumberOfAuxSymbols = 0;
fwrite(&sym, sizeof(sym), 1, pfile);
StoreName(szFrom, &sym, &cbStrings);
sym.Value = 0;
sym.SectionNumber = IMAGE_SYM_UNDEFINED;
sym.Type = IMAGE_SYM_TYPE_NULL;
sym.StorageClass = IMAGE_SYM_CLASS_WEAK_EXTERNAL;
sym.NumberOfAuxSymbols = 1;
fwrite(&sym, sizeof(sym), 1, pfile);
memset(&aux, 0, sizeof(aux));
aux.Sym.Misc.TotalSize = IMAGE_WEAK_EXTERN_SEARCH_ALIAS;
aux.Sym.TagIndex = 1; // symtab index for extern
fwrite(&aux, sizeof(aux), 1, pfile);
// Write the string table.
//
foStringTable = ftell(pfile);
fwrite(&cbStrings, sizeof(cbStrings), 1, pfile);
if (strlen(szTo) > IMAGE_SIZEOF_SHORT_NAME) {
fputs(szTo, pfile);
fputc(0, pfile);
}
if (strlen(szFrom) > IMAGE_SIZEOF_SHORT_NAME) {
fputs(szFrom, pfile);
fputc(0, pfile);
}
assert(ftell(pfile) - foStringTable == cbStrings);
fclose(pfile);
return 0;
}