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crypt32: Fix filling short output in CertGetNameStringW(). 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2022-04-14 17:10:14 +03:00 committed by Alexandre Julliard
parent a78f2319e8
commit 66d9250c42
2 changed files with 39 additions and 64 deletions
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100
dlls/crypt32/str.c
View File

@ -96,8 +96,8 @@ DWORD WINAPI CertRDNValueToStrA(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
return ret;
}
DWORD WINAPI CertRDNValueToStrW(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
LPWSTR psz, DWORD csz)
static DWORD rdn_value_to_strW(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
LPWSTR psz, DWORD csz, BOOL partial_copy)
{
DWORD ret = 0, len, i;
@ -117,8 +117,9 @@ DWORD WINAPI CertRDNValueToStrW(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
case CERT_RDN_GENERAL_STRING:
len = pValue->cbData;
if (!psz || !csz) ret = len;
else if (len < csz)
else if (len < csz || partial_copy)
{
len = min(len, csz - 1);
for (i = 0; i < len; ++i)
psz[i] = pValue->pbData[i];
ret = len;
@ -129,10 +130,11 @@ DWORD WINAPI CertRDNValueToStrW(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
len = pValue->cbData / sizeof(WCHAR);
if (!psz || !csz)
ret = len;
else if (len < csz)
else if (len < csz || partial_copy)
{
WCHAR *ptr = psz;
len = min(len, csz - 1);
for (i = 0; i < len; ++i)
ptr[i] = ((LPCWSTR)pValue->pbData)[i];
ret = len;
@ -146,6 +148,12 @@ DWORD WINAPI CertRDNValueToStrW(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
return ret + 1;
}
DWORD WINAPI CertRDNValueToStrW(DWORD dwValueType, PCERT_RDN_VALUE_BLOB pValue,
LPWSTR psz, DWORD csz)
{
return rdn_value_to_strW(dwValueType, pValue, psz, csz, FALSE);
}
static inline BOOL is_quotable_char(WCHAR c)
{
switch(c)
@ -1196,13 +1204,24 @@ static DWORD cert_get_name_from_rdn_attr(DWORD encodingType,
oid = szOID_RSA_emailAddr;
nameAttr = CertFindRDNAttr(oid, nameInfo);
if (nameAttr)
ret = CertRDNValueToStrW(nameAttr->dwValueType, &nameAttr->Value,
pszNameString, cchNameString);
ret = rdn_value_to_strW(nameAttr->dwValueType, &nameAttr->Value,
pszNameString, cchNameString, TRUE);
LocalFree(nameInfo);
}
return ret;
}
static DWORD copy_output_str(WCHAR *dst, const WCHAR *src, DWORD dst_size)
{
DWORD len = wcslen(src);
if (!dst || !dst_size) return len + 1;
len = min(len, dst_size - 1);
memcpy(dst, src, len * sizeof(*dst));
dst[len] = 0;
return len + 1;
}
DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
DWORD dwFlags, void *pvTypePara, LPWSTR pszNameString, DWORD cchNameString)
{
@ -1235,23 +1254,14 @@ DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
PCERT_ALT_NAME_ENTRY entry = cert_find_alt_name_entry(pCertContext,
altNameOID, CERT_ALT_NAME_RFC822_NAME, &info);
if (entry)
{
if (!pszNameString)
ret = lstrlenW(entry->u.pwszRfc822Name) + 1;
else if (cchNameString)
{
ret = min(lstrlenW(entry->u.pwszRfc822Name), cchNameString - 1);
memcpy(pszNameString, entry->u.pwszRfc822Name,
ret * sizeof(WCHAR));
pszNameString[ret++] = 0;
}
}
if (entry) ret = copy_output_str(pszNameString, entry->u.pwszRfc822Name, cchNameString);
if (info)
LocalFree(info);
if (!ret)
{
ret = cert_get_name_from_rdn_attr(pCertContext->dwCertEncodingType,
name, szOID_RSA_emailAddr, pszNameString, cchNameString);
}
break;
}
case CERT_NAME_RDN_TYPE:
@ -1308,8 +1318,8 @@ DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
for (i = 0; !nameAttr && i < ARRAY_SIZE(simpleAttributeOIDs); i++)
nameAttr = CertFindRDNAttr(simpleAttributeOIDs[i], nameInfo);
if (nameAttr)
ret = CertRDNValueToStrW(nameAttr->dwValueType,
&nameAttr->Value, pszNameString, cchNameString);
ret = rdn_value_to_strW(nameAttr->dwValueType,
&nameAttr->Value, pszNameString, cchNameString, TRUE);
LocalFree(nameInfo);
}
if (!ret)
@ -1322,19 +1332,7 @@ DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
{
if (!entry && altInfo->cAltEntry)
entry = &altInfo->rgAltEntry[0];
if (entry)
{
if (!pszNameString)
ret = lstrlenW(entry->u.pwszRfc822Name) + 1;
else if (cchNameString)
{
ret = min(lstrlenW(entry->u.pwszRfc822Name),
cchNameString - 1);
memcpy(pszNameString, entry->u.pwszRfc822Name,
ret * sizeof(WCHAR));
pszNameString[ret++] = 0;
}
}
if (entry) ret = copy_output_str(pszNameString, entry->u.pwszRfc822Name, cchNameString);
LocalFree(altInfo);
}
}
@ -1359,17 +1357,8 @@ DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
PCERT_ALT_NAME_ENTRY entry = cert_find_alt_name_entry(pCertContext,
altNameOID, CERT_ALT_NAME_DNS_NAME, &info);
if (entry)
{
if (!pszNameString)
ret = lstrlenW(entry->u.pwszDNSName) + 1;
else if (cchNameString)
{
ret = min(lstrlenW(entry->u.pwszDNSName), cchNameString - 1);
memcpy(pszNameString, entry->u.pwszDNSName, ret * sizeof(WCHAR));
pszNameString[ret++] = 0;
}
}
if (entry) ret = copy_output_str(pszNameString, entry->u.pwszDNSName, cchNameString);
if (info)
LocalFree(info);
if (!ret)
@ -1383,17 +1372,8 @@ DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
PCERT_ALT_NAME_ENTRY entry = cert_find_alt_name_entry(pCertContext,
altNameOID, CERT_ALT_NAME_URL, &info);
if (entry)
{
if (!pszNameString)
ret = lstrlenW(entry->u.pwszURL) + 1;
else if (cchNameString)
{
ret = min(lstrlenW(entry->u.pwszURL), cchNameString - 1);
memcpy(pszNameString, entry->u.pwszURL, ret * sizeof(WCHAR));
pszNameString[ret++] = 0;
}
}
if (entry) ret = copy_output_str(pszNameString, entry->u.pwszURL, cchNameString);
if (info)
LocalFree(info);
break;
@ -1401,17 +1381,13 @@ DWORD WINAPI CertGetNameStringW(PCCERT_CONTEXT pCertContext, DWORD dwType,
default:
FIXME("unimplemented for type %ld\n", dwType);
ret = 0;
break;
}
done:
if (!ret)
{
if (!pszNameString)
ret = 1;
else if (cchNameString)
{
pszNameString[0] = 0;
ret = 1;
}
ret = 1;
if (pszNameString && cchNameString) pszNameString[0] = 0;
}
return ret;
}

3
dlls/crypt32/tests/str.c
View File

@ -774,8 +774,7 @@ static void test_CertGetNameString_value_(unsigned int line, PCCERT_CONTEXT cont
ok(!wcscmp(strW, expectedW), "line %u: unexpected value %s.\n", line, debugstr_w(strW));
strW[0] = strW[1] = 0xcccc;
retlen = CertGetNameStringW(context, type, 0, type_para, strW, len - 1);
todo_wine_if(type != CERT_NAME_RDN_TYPE)
ok(retlen == len - 1, "line %u: unexpected len %lu, expected %lu.\n", line, retlen, len - 1);
ok(retlen == len - 1, "line %u: unexpected len %lu, expected %lu.\n", line, retlen, len - 1);
ok(!wcsncmp(strW, expectedW, retlen - 1), "line %u: string data mismatch.\n", line);
ok(!strW[retlen - 1], "line %u: string is not zero terminated.\n", line);
retlen = CertGetNameStringA(context, type, 0, type_para, NULL, len - 1);