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Commit d8780c75 authored by Robert Shearman's avatar Robert Shearman Committed by Alexandre Julliard
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Fix confusion between number of characters and number of bytes in

unmarshaling BSTRs. Convert it all to characters for consistency with the BSTR_User* routines.
parent c0d7a25a
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Showing with 23 additions and 19 deletions
dlls/oleaut32/tmarshal.c
View file @ d8780c75
......@@ -565,14 +565,17 @@ serialize_param(
if (writeit) {
/* ptr to ptr to magic widestring, basically */
BSTR *bstr = (BSTR *) *arg;
DWORD len;
if (!*bstr) {
/* -1 means "null string" which is equivalent to empty string */
DWORD fakelen = -1;
xbuf_add(buf, (LPBYTE)&fakelen,4);
len = -1;
hres = xbuf_add(buf, (LPBYTE)&len,sizeof(DWORD));
if (hres) return hres;
} else {
/* BSTRs store the length behind the first character */
DWORD *len = ((DWORD *)(*bstr))-1;
hres = xbuf_add(buf, (LPBYTE) len, *len + 4);
len = *((DWORD*)*bstr-1)/sizeof(WCHAR);
hres = xbuf_add(buf,(LPBYTE)&len,sizeof(DWORD));
if (hres) return hres;
hres = xbuf_add(buf,(LPBYTE)*bstr,len * sizeof(WCHAR));
if (hres) return hres;
}
}
......@@ -592,17 +595,18 @@ serialize_param(
TRACE_(olerelay)("<bstr NULL>");
}
if (writeit) {
if (!*arg) {
DWORD fakelen = -1;
hres = xbuf_add(buf,(LPBYTE)&fakelen,4);
if (hres)
return hres;
BSTR bstr = (BSTR)*arg;
DWORD len;
if (!bstr) {
len = -1;
hres = xbuf_add(buf,(LPBYTE)&len,sizeof(DWORD));
if (hres) return hres;
} else {
DWORD *bstr = ((DWORD*)(*arg))-1;
hres = xbuf_add(buf,(LPBYTE)bstr,bstr[0]+4);
if (hres)
return hres;
len = *((DWORD*)bstr-1)/sizeof(WCHAR);
hres = xbuf_add(buf,(LPBYTE)&len,sizeof(DWORD));
if (hres) return hres;
hres = xbuf_add(buf,(LPBYTE)bstr,len * sizeof(WCHAR));
if (hres) return hres;
}
}
......@@ -1139,8 +1143,8 @@ deserialize_param(
**bstr = NULL;
if (debugout) TRACE_(olerelay)("<bstr NULL>");
} else {
str = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,len+sizeof(WCHAR));
hres = xbuf_get(buf,(LPBYTE)str,len);
str = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,(len+1)*sizeof(WCHAR));
hres = xbuf_get(buf,(LPBYTE)str,len*sizeof(WCHAR));
if (hres) {
ERR("Failed to read BSTR.\n");
return hres;
......@@ -1169,8 +1173,8 @@ deserialize_param(
*arg = 0;
if (debugout) TRACE_(olerelay)("<bstr NULL>");
} else {
str = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,len+sizeof(WCHAR));
hres = xbuf_get(buf,(LPBYTE)str,len);
str = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,(len+1)*sizeof(WCHAR));
hres = xbuf_get(buf,(LPBYTE)str,len*sizeof(WCHAR));
if (hres) {
ERR("Failed to read BSTR.\n");
return hres;
......
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