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wine/dlls/crypt32/str.c
Alexandre Julliard febb06ce77 crypt32: Use nameless union/structs.
2023-07-05 17:03:30 +02:00

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/*
* Copyright 2006 Juan Lang for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winuser.h"
#include "wincrypt.h"
#include "wine/debug.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
DWORD WINAPI CertRDNValueToStrA(DWORD type, PCERT_RDN_VALUE_BLOB value_blob,
LPSTR value, DWORD value_len)
{
DWORD len, len_mb, ret;
LPWSTR valueW;
TRACE("(%ld, %p, %p, %ld)\n", type, value_blob, value, value_len);
len = CertRDNValueToStrW(type, value_blob, NULL, 0);
if (!(valueW = CryptMemAlloc(len * sizeof(*valueW))))
{
ERR("No memory.\n");
if (value && value_len) *value = 0;
return 1;
}
len = CertRDNValueToStrW(type, value_blob, valueW, len);
len_mb = WideCharToMultiByte(CP_ACP, 0, valueW, len, NULL, 0, NULL, NULL);
if (!value || !value_len)
{
CryptMemFree(valueW);
return len_mb;
}
ret = WideCharToMultiByte(CP_ACP, 0, valueW, len, value, value_len, NULL, NULL);
if (ret < len_mb)
{
value[0] = 0;
ret = 1;
}
CryptMemFree(valueW);
return ret;
}
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;
TRACE("(%ld, %p, %p, %ld)\n", dwValueType, pValue, psz, csz);
switch (dwValueType)
{
case CERT_RDN_ANY_TYPE:
break;
case CERT_RDN_NUMERIC_STRING:
case CERT_RDN_PRINTABLE_STRING:
case CERT_RDN_TELETEX_STRING:
case CERT_RDN_VIDEOTEX_STRING:
case CERT_RDN_IA5_STRING:
case CERT_RDN_GRAPHIC_STRING:
case CERT_RDN_VISIBLE_STRING:
case CERT_RDN_GENERAL_STRING:
len = pValue->cbData;
if (!psz || !csz) ret = len;
else if (len < csz || partial_copy)
{
len = min(len, csz - 1);
for (i = 0; i < len; ++i)
psz[i] = pValue->pbData[i];
ret = len;
}
break;
case CERT_RDN_BMP_STRING:
case CERT_RDN_UTF8_STRING:
len = pValue->cbData / sizeof(WCHAR);
if (!psz || !csz)
ret = len;
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;
}
break;
default:
FIXME("string type %ld unimplemented\n", dwValueType);
}
if (psz && csz) psz[ret] = 0;
TRACE("returning %ld (%s)\n", ret + 1, debugstr_w(psz));
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)
{
case '+':
case ',':
case '"':
case '=':
case '<':
case '>':
case ';':
case '#':
case '\n':
return TRUE;
default:
return FALSE;
}
}
static DWORD quote_rdn_value_to_str_w(DWORD dwValueType,
PCERT_RDN_VALUE_BLOB pValue, LPWSTR psz, DWORD csz)
{
DWORD ret = 0, len, i, strLen;
BOOL needsQuotes = FALSE;
TRACE("(%ld, %p, %p, %ld)\n", dwValueType, pValue, psz, csz);
switch (dwValueType)
{
case CERT_RDN_ANY_TYPE:
break;
case CERT_RDN_NUMERIC_STRING:
case CERT_RDN_PRINTABLE_STRING:
case CERT_RDN_TELETEX_STRING:
case CERT_RDN_VIDEOTEX_STRING:
case CERT_RDN_IA5_STRING:
case CERT_RDN_GRAPHIC_STRING:
case CERT_RDN_VISIBLE_STRING:
case CERT_RDN_GENERAL_STRING:
len = pValue->cbData;
if (pValue->cbData && isspace(pValue->pbData[0]))
needsQuotes = TRUE;
if (pValue->cbData && isspace(pValue->pbData[pValue->cbData - 1]))
needsQuotes = TRUE;
for (i = 0; i < pValue->cbData; i++)
{
if (is_quotable_char(pValue->pbData[i]))
needsQuotes = TRUE;
if (pValue->pbData[i] == '"')
len += 1;
}
if (needsQuotes)
len += 2;
if (!psz || !csz)
ret = len;
else
{
WCHAR *ptr = psz;
if (needsQuotes)
*ptr++ = '"';
for (i = 0; i < pValue->cbData && ptr - psz < csz; ptr++, i++)
{
*ptr = pValue->pbData[i];
if (pValue->pbData[i] == '"' && ptr - psz < csz - 1)
*(++ptr) = '"';
}
if (needsQuotes && ptr - psz < csz)
*ptr++ = '"';
ret = ptr - psz;
}
break;
case CERT_RDN_BMP_STRING:
case CERT_RDN_UTF8_STRING:
strLen = len = pValue->cbData / sizeof(WCHAR);
if (pValue->cbData && isspace(pValue->pbData[0]))
needsQuotes = TRUE;
if (pValue->cbData && isspace(pValue->pbData[strLen - 1]))
needsQuotes = TRUE;
for (i = 0; i < strLen; i++)
{
if (is_quotable_char(((LPCWSTR)pValue->pbData)[i]))
needsQuotes = TRUE;
if (((LPCWSTR)pValue->pbData)[i] == '"')
len += 1;
}
if (needsQuotes)
len += 2;
if (!psz || !csz)
ret = len;
else
{
WCHAR *ptr = psz;
if (needsQuotes)
*ptr++ = '"';
for (i = 0; i < strLen && ptr - psz < csz; ptr++, i++)
{
*ptr = ((LPCWSTR)pValue->pbData)[i];
if (((LPCWSTR)pValue->pbData)[i] == '"' && ptr - psz < csz - 1)
*(++ptr) = '"';
}
if (needsQuotes && ptr - psz < csz)
*ptr++ = '"';
ret = ptr - psz;
}
break;
default:
FIXME("string type %ld unimplemented\n", dwValueType);
}
TRACE("returning %ld (%s)\n", ret, debugstr_w(psz));
return ret;
}
DWORD WINAPI CertNameToStrA(DWORD encoding_type, PCERT_NAME_BLOB name_blob, DWORD str_type, LPSTR str, DWORD str_len)
{
DWORD len, len_mb, ret;
LPWSTR strW;
TRACE("(%ld, %p, %08lx, %p, %ld)\n", encoding_type, name_blob, str_type, str, str_len);
len = CertNameToStrW(encoding_type, name_blob, str_type, NULL, 0);
if (!(strW = CryptMemAlloc(len * sizeof(*strW))))
{
ERR("No memory.\n");
if (str && str_len) *str = 0;
return 1;
}
len = CertNameToStrW(encoding_type, name_blob, str_type, strW, len);
len_mb = WideCharToMultiByte(CP_ACP, 0, strW, len, NULL, 0, NULL, NULL);
if (!str || !str_len)
{
CryptMemFree(strW);
return len_mb;
}
ret = WideCharToMultiByte(CP_ACP, 0, strW, len, str, str_len, NULL, NULL);
if (ret < len_mb)
{
str[0] = 0;
ret = 1;
}
CryptMemFree(strW);
return ret;
}
/* Adds the prefix prefix to the wide-character string pointed to by psz,
* followed by the character '='. Copies no more than csz characters. Returns
* the number of characters copied. If psz is NULL, returns the number of
* characters that would be copied.
* Assumes the characters in prefix are ASCII (not multibyte characters.)
*/
static DWORD CRYPT_AddPrefixAToW(LPCSTR prefix, LPWSTR psz, DWORD csz)
{
DWORD chars;
TRACE("(%s, %p, %ld)\n", debugstr_a(prefix), psz, csz);
if (psz)
{
DWORD i;
chars = min(strlen(prefix), csz);
for (i = 0; i < chars; i++)
*(psz + i) = prefix[i];
*(psz + chars) = '=';
chars++;
}
else
chars = lstrlenA(prefix) + 1;
return chars;
}
/* Adds the prefix prefix to the string pointed to by psz, followed by the
* character '='. Copies no more than csz characters. Returns the number of
* characters copied. If psz is NULL, returns the number of characters that
* would be copied.
*/
static DWORD CRYPT_AddPrefixW(LPCWSTR prefix, LPWSTR psz, DWORD csz)
{
DWORD chars;
TRACE("(%s, %p, %ld)\n", debugstr_w(prefix), psz, csz);
if (psz)
{
chars = min(lstrlenW(prefix), csz);
memcpy(psz, prefix, chars * sizeof(WCHAR));
*(psz + chars) = '=';
chars++;
}
else
chars = lstrlenW(prefix) + 1;
return chars;
}
static const WCHAR indent[] = L" ";
DWORD cert_name_to_str_with_indent(DWORD dwCertEncodingType, DWORD indentLevel,
const CERT_NAME_BLOB *pName, DWORD dwStrType, LPWSTR psz, DWORD csz)
{
static const DWORD unsupportedFlags = CERT_NAME_STR_NO_QUOTING_FLAG |
CERT_NAME_STR_ENABLE_T61_UNICODE_FLAG;
DWORD ret = 0, bytes = 0;
BOOL bRet;
CERT_NAME_INFO *info;
DWORD chars;
if (dwStrType & unsupportedFlags)
FIXME("unsupported flags: %08lx\n", dwStrType & unsupportedFlags);
bRet = CryptDecodeObjectEx(dwCertEncodingType, X509_NAME, pName->pbData,
pName->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &info, &bytes);
if (bRet)
{
DWORD i, j, sepLen, rdnSepLen;
LPCWSTR sep, rdnSep;
BOOL reverse = dwStrType & CERT_NAME_STR_REVERSE_FLAG;
const CERT_RDN *rdn = info->rgRDN;
if(reverse && info->cRDN > 1) rdn += (info->cRDN - 1);
if (dwStrType & CERT_NAME_STR_SEMICOLON_FLAG)
sep = L"; ";
else if (dwStrType & CERT_NAME_STR_CRLF_FLAG)
sep = L"\r\n";
else
sep = L", ";
sepLen = lstrlenW(sep);
if (dwStrType & CERT_NAME_STR_NO_PLUS_FLAG)
rdnSep = L" ";
else
rdnSep = L" + ";
rdnSepLen = lstrlenW(rdnSep);
if (!csz) psz = NULL;
for (i = 0; i < info->cRDN; i++)
{
if (psz && ret + 1 == csz) break;
for (j = 0; j < rdn->cRDNAttr; j++)
{
LPCSTR prefixA = NULL;
LPCWSTR prefixW = NULL;
if (psz && ret + 1 == csz) break;
if ((dwStrType & 0x000000ff) == CERT_OID_NAME_STR)
prefixA = rdn->rgRDNAttr[j].pszObjId;
else if ((dwStrType & 0x000000ff) == CERT_X500_NAME_STR)
{
PCCRYPT_OID_INFO oidInfo = CryptFindOIDInfo(
CRYPT_OID_INFO_OID_KEY,
rdn->rgRDNAttr[j].pszObjId,
CRYPT_RDN_ATTR_OID_GROUP_ID);
if (oidInfo)
prefixW = oidInfo->pwszName;
else
prefixA = rdn->rgRDNAttr[j].pszObjId;
}
if (dwStrType & CERT_NAME_STR_CRLF_FLAG)
{
DWORD k;
for (k = 0; k < indentLevel; k++)
{
if (psz)
{
chars = min(lstrlenW(indent), csz - ret - 1);
memcpy(psz + ret, indent, chars * sizeof(WCHAR));
}
else
chars = lstrlenW(indent);
ret += chars;
}
if (psz && ret + 1 == csz) break;
}
if (prefixW)
{
/* - 1 is needed to account for the NULL terminator. */
chars = CRYPT_AddPrefixW(prefixW,
psz ? psz + ret : NULL, psz ? csz - ret - 1 : 0);
ret += chars;
}
else if (prefixA)
{
/* - 1 is needed to account for the NULL terminator. */
chars = CRYPT_AddPrefixAToW(prefixA,
psz ? psz + ret : NULL, psz ? csz - ret - 1 : 0);
ret += chars;
}
if (psz && ret + 1 == csz) break;
chars = quote_rdn_value_to_str_w(rdn->rgRDNAttr[j].dwValueType, &rdn->rgRDNAttr[j].Value,
psz ? psz + ret : NULL, psz ? csz - ret - 1 : 0);
ret += chars;
if (j < rdn->cRDNAttr - 1)
{
if (psz)
{
chars = min(rdnSepLen, csz - ret - 1);
memcpy(psz + ret, rdnSep, chars * sizeof(WCHAR));
ret += chars;
}
else ret += rdnSepLen;
}
}
if (psz && ret + 1 == csz) break;
if (i < info->cRDN - 1)
{
if (psz)
{
chars = min(sepLen, csz - ret - 1);
memcpy(psz + ret, sep, chars * sizeof(WCHAR));
ret += chars;
}
else ret += sepLen;
}
if(reverse) rdn--;
else rdn++;
}
LocalFree(info);
}
if (psz && csz) psz[ret] = 0;
return ret + 1;
}
DWORD WINAPI CertNameToStrW(DWORD dwCertEncodingType, PCERT_NAME_BLOB pName,
DWORD dwStrType, LPWSTR psz, DWORD csz)
{
BOOL ret;
TRACE("(%ld, %p, %08lx, %p, %ld)\n", dwCertEncodingType, pName, dwStrType,
psz, csz);
ret = cert_name_to_str_with_indent(dwCertEncodingType, 0, pName, dwStrType,
psz, csz);
TRACE("Returning %s\n", debugstr_w(psz));
return ret;
}
BOOL WINAPI CertStrToNameA(DWORD dwCertEncodingType, LPCSTR pszX500,
DWORD dwStrType, void *pvReserved, BYTE *pbEncoded, DWORD *pcbEncoded,
LPCSTR *ppszError)
{
BOOL ret;
int len;
TRACE("(%08lx, %s, %08lx, %p, %p, %p, %p)\n", dwCertEncodingType,
debugstr_a(pszX500), dwStrType, pvReserved, pbEncoded, pcbEncoded,
ppszError);
len = MultiByteToWideChar(CP_ACP, 0, pszX500, -1, NULL, 0);
if (len)
{
LPWSTR x500, errorStr;
if ((x500 = CryptMemAlloc(len * sizeof(WCHAR))))
{
MultiByteToWideChar(CP_ACP, 0, pszX500, -1, x500, len);
ret = CertStrToNameW(dwCertEncodingType, x500, dwStrType,
pvReserved, pbEncoded, pcbEncoded,
ppszError ? (LPCWSTR *)&errorStr : NULL);
if (ppszError)
{
if (!ret)
{
LONG i;
*ppszError = pszX500;
for (i = 0; i < errorStr - x500; i++)
*ppszError = CharNextA(*ppszError);
}
else
*ppszError = NULL;
}
CryptMemFree(x500);
}
else
{
SetLastError(ERROR_OUTOFMEMORY);
ret = FALSE;
}
}
else
{
SetLastError(CRYPT_E_INVALID_X500_STRING);
if (ppszError)
*ppszError = pszX500;
ret = FALSE;
}
return ret;
}
struct KeynameKeeper
{
WCHAR buf[10]; /* big enough for L"GivenName" */
LPWSTR keyName; /* usually = buf, but may be allocated */
DWORD keyLen; /* full available buffer size in WCHARs */
};
static void CRYPT_InitializeKeynameKeeper(struct KeynameKeeper *keeper)
{
keeper->keyName = keeper->buf;
keeper->keyLen = ARRAY_SIZE(keeper->buf);
}
static void CRYPT_FreeKeynameKeeper(struct KeynameKeeper *keeper)
{
if (keeper->keyName != keeper->buf)
CryptMemFree(keeper->keyName);
}
struct X500TokenW
{
LPCWSTR start;
LPCWSTR end;
};
static void CRYPT_KeynameKeeperFromTokenW(struct KeynameKeeper *keeper,
const struct X500TokenW *key)
{
DWORD len = key->end - key->start;
if (len >= keeper->keyLen)
{
CRYPT_FreeKeynameKeeper( keeper );
keeper->keyLen = len + 1;
keeper->keyName = CryptMemAlloc(keeper->keyLen * sizeof(WCHAR));
}
memcpy(keeper->keyName, key->start, len * sizeof(WCHAR));
keeper->keyName[len] = '\0';
TRACE("Keyname is %s\n", debugstr_w(keeper->keyName));
}
static BOOL CRYPT_GetNextKeyW(LPCWSTR str, struct X500TokenW *token,
LPCWSTR *ppszError)
{
BOOL ret = TRUE;
while (*str && iswspace(*str))
str++;
if (*str)
{
token->start = str;
while (*str && *str != '=' && !iswspace(*str))
str++;
if (*str && (*str == '=' || iswspace(*str)))
token->end = str;
else
{
TRACE("missing equals char at %s\n", debugstr_w(token->start));
if (ppszError)
*ppszError = token->start;
SetLastError(CRYPT_E_INVALID_X500_STRING);
ret = FALSE;
}
}
else
token->start = NULL;
return ret;
}
/* Assumes separators are characters in the 0-255 range */
static BOOL CRYPT_GetNextValueW(LPCWSTR str, DWORD dwFlags, LPCWSTR separators,
WCHAR *separator_used, struct X500TokenW *token, LPCWSTR *ppszError)
{
BOOL ret = TRUE;
TRACE("(%s, %s, %p, %p)\n", debugstr_w(str), debugstr_w(separators), token,
ppszError);
*separator_used = 0;
while (*str && iswspace(*str))
str++;
if (*str)
{
token->start = str;
if (!(dwFlags & CERT_NAME_STR_NO_QUOTING_FLAG) && *str == '"')
{
token->end = NULL;
str++;
while (!token->end && ret)
{
while (*str && *str != '"')
str++;
if (*str == '"')
{
if (*(str + 1) != '"')
token->end = str + 1;
else
str += 2;
}
else
{
TRACE("unterminated quote at %s\n", debugstr_w(str));
if (ppszError)
*ppszError = str;
SetLastError(CRYPT_E_INVALID_X500_STRING);
ret = FALSE;
}
}
}
else
{
WCHAR map[256] = { 0 };
while (*separators)
map[*separators++] = 1;
while (*str && (*str >= 0xff || !map[*str]))
str++;
token->end = str;
if (map[*str]) *separator_used = *str;
}
}
else
{
TRACE("missing value at %s\n", debugstr_w(str));
if (ppszError)
*ppszError = str;
SetLastError(CRYPT_E_INVALID_X500_STRING);
ret = FALSE;
}
return ret;
}
/* Encodes the string represented by value as the string type type into the
* CERT_NAME_BLOB output. If there is an error and ppszError is not NULL,
* *ppszError is set to the first failing character. If there is no error,
* output's pbData must be freed with LocalFree.
*/
static BOOL CRYPT_EncodeValueWithType(DWORD dwCertEncodingType,
const struct X500TokenW *value, PCERT_NAME_BLOB output, DWORD type,
LPCWSTR *ppszError)
{
CERT_NAME_VALUE nameValue = { type, { 0, NULL } };
BOOL ret = TRUE;
if (value->end > value->start)
{
LONG i;
LPWSTR ptr;
nameValue.Value.pbData = CryptMemAlloc((value->end - value->start + 1) *
sizeof(WCHAR));
if (!nameValue.Value.pbData)
{
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
ptr = (LPWSTR)nameValue.Value.pbData;
for (i = 0; i < value->end - value->start; i++)
{
*ptr++ = value->start[i];
if (value->start[i] == '"')
i++;
}
/* The string is NULL terminated because of a quirk in encoding
* unicode names values: if the length is given as 0, the value is
* assumed to be a NULL-terminated string.
*/
*ptr = 0;
nameValue.Value.cbData = (LPBYTE)ptr - nameValue.Value.pbData;
}
ret = CryptEncodeObjectEx(dwCertEncodingType, X509_UNICODE_NAME_VALUE,
&nameValue, CRYPT_ENCODE_ALLOC_FLAG, NULL, &output->pbData,
&output->cbData);
if (!ret && ppszError)
{
if (type == CERT_RDN_NUMERIC_STRING &&
GetLastError() == CRYPT_E_INVALID_NUMERIC_STRING)
*ppszError = value->start + output->cbData;
else if (type == CERT_RDN_PRINTABLE_STRING &&
GetLastError() == CRYPT_E_INVALID_PRINTABLE_STRING)
*ppszError = value->start + output->cbData;
else if (type == CERT_RDN_IA5_STRING &&
GetLastError() == CRYPT_E_INVALID_IA5_STRING)
*ppszError = value->start + output->cbData;
}
CryptMemFree(nameValue.Value.pbData);
return ret;
}
static BOOL CRYPT_EncodeValue(DWORD dwCertEncodingType,
const struct X500TokenW *value, PCERT_NAME_BLOB output, const DWORD *types,
LPCWSTR *ppszError)
{
DWORD i;
BOOL ret;
ret = FALSE;
for (i = 0; !ret && types[i]; i++)
ret = CRYPT_EncodeValueWithType(dwCertEncodingType, value, output,
types[i], ppszError);
return ret;
}
static BOOL CRYPT_ValueToRDN(DWORD dwCertEncodingType, PCERT_NAME_INFO info,
PCCRYPT_OID_INFO keyOID, struct X500TokenW *value, DWORD dwStrType, LPCWSTR *ppszError)
{
BOOL ret = FALSE;
TRACE("OID %s, value %s\n", debugstr_a(keyOID->pszOID),
debugstr_wn(value->start, value->end - value->start));
if (!info->rgRDN)
info->rgRDN = CryptMemAlloc(sizeof(CERT_RDN));
else
info->rgRDN = CryptMemRealloc(info->rgRDN,
(info->cRDN + 1) * sizeof(CERT_RDN));
if (info->rgRDN)
{
/* FIXME: support multiple RDN attrs */
info->rgRDN[info->cRDN].rgRDNAttr =
CryptMemAlloc(sizeof(CERT_RDN_ATTR));
if (info->rgRDN[info->cRDN].rgRDNAttr)
{
static const DWORD defaultTypes[] = { CERT_RDN_PRINTABLE_STRING,
CERT_RDN_BMP_STRING, 0 };
const DWORD *types;
info->rgRDN[info->cRDN].cRDNAttr = 1;
info->rgRDN[info->cRDN].rgRDNAttr[0].pszObjId =
(LPSTR)keyOID->pszOID;
info->rgRDN[info->cRDN].rgRDNAttr[0].dwValueType =
CERT_RDN_ENCODED_BLOB;
if (keyOID->ExtraInfo.cbData)
types = (const DWORD *)keyOID->ExtraInfo.pbData;
else
types = defaultTypes;
/* Remove surrounding quotes */
if (value->start[0] == '"' && !(dwStrType & CERT_NAME_STR_NO_QUOTING_FLAG))
{
value->start++;
value->end--;
}
ret = CRYPT_EncodeValue(dwCertEncodingType, value,
&info->rgRDN[info->cRDN].rgRDNAttr[0].Value, types, ppszError);
}
else
SetLastError(ERROR_OUTOFMEMORY);
info->cRDN++;
}
else
SetLastError(ERROR_OUTOFMEMORY);
return ret;
}
BOOL WINAPI CertStrToNameW(DWORD dwCertEncodingType, LPCWSTR pszX500,
DWORD dwStrType, void *pvReserved, BYTE *pbEncoded, DWORD *pcbEncoded,
LPCWSTR *ppszError)
{
CERT_NAME_INFO info = { 0, NULL };
LPCWSTR str;
struct KeynameKeeper keeper;
DWORD i;
BOOL ret = TRUE;
TRACE("(%08lx, %s, %08lx, %p, %p, %p, %p)\n", dwCertEncodingType,
debugstr_w(pszX500), dwStrType, pvReserved, pbEncoded, pcbEncoded,
ppszError);
CRYPT_InitializeKeynameKeeper(&keeper);
str = pszX500;
while (str && *str && ret)
{
struct X500TokenW token;
ret = CRYPT_GetNextKeyW(str, &token, ppszError);
if (ret && token.start)
{
PCCRYPT_OID_INFO keyOID;
CRYPT_KeynameKeeperFromTokenW(&keeper, &token);
keyOID = CryptFindOIDInfo(CRYPT_OID_INFO_NAME_KEY, keeper.keyName,
CRYPT_RDN_ATTR_OID_GROUP_ID);
if (!keyOID)
{
if (ppszError)
*ppszError = token.start;
SetLastError(CRYPT_E_INVALID_X500_STRING);
ret = FALSE;
}
else
{
str = token.end;
while (iswspace(*str))
str++;
if (*str != '=')
{
if (ppszError)
*ppszError = str;
SetLastError(CRYPT_E_INVALID_X500_STRING);
ret = FALSE;
}
else
{
LPCWSTR sep;
WCHAR sep_used;
str++;
if (dwStrType & CERT_NAME_STR_COMMA_FLAG)
sep = L",";
else if (dwStrType & CERT_NAME_STR_SEMICOLON_FLAG)
sep = L";";
else if (dwStrType & CERT_NAME_STR_CRLF_FLAG)
sep = L"\r\n";
else if (dwStrType & CERT_NAME_STR_NO_PLUS_FLAG)
sep = L",;\r\n";
else
sep = L"+,;\r\n";
ret = CRYPT_GetNextValueW(str, dwStrType, sep, &sep_used, &token,
ppszError);
if (ret)
{
str = token.end;
/* if token.end points to the separator, skip it */
if (str && sep_used && *str == sep_used) str++;
ret = CRYPT_ValueToRDN(dwCertEncodingType, &info,
keyOID, &token, dwStrType, ppszError);
}
}
}
}
}
CRYPT_FreeKeynameKeeper(&keeper);
if (ret)
{
if (ppszError)
*ppszError = NULL;
ret = CryptEncodeObjectEx(dwCertEncodingType, X509_NAME, &info,
0, NULL, pbEncoded, pcbEncoded);
}
for (i = 0; i < info.cRDN; i++)
{
DWORD j;
for (j = 0; j < info.rgRDN[i].cRDNAttr; j++)
LocalFree(info.rgRDN[i].rgRDNAttr[j].Value.pbData);
CryptMemFree(info.rgRDN[i].rgRDNAttr);
}
CryptMemFree(info.rgRDN);
return ret;
}
DWORD WINAPI CertGetNameStringA(PCCERT_CONTEXT cert, DWORD type,
DWORD flags, void *type_para, LPSTR name, DWORD name_len)
{
DWORD len, len_mb, ret;
LPWSTR nameW;
TRACE("(%p, %ld, %08lx, %p, %p, %ld)\n", cert, type, flags, type_para, name, name_len);
len = CertGetNameStringW(cert, type, flags, type_para, NULL, 0);
if (!(nameW = CryptMemAlloc(len * sizeof(*nameW))))
{
ERR("No memory.\n");
if (name && name_len) *name = 0;
return 1;
}
len = CertGetNameStringW(cert, type, flags, type_para, nameW, len);
len_mb = WideCharToMultiByte(CP_ACP, 0, nameW, len, NULL, 0, NULL, NULL);
if (!name || !name_len)
{
CryptMemFree(nameW);
return len_mb;
}
ret = WideCharToMultiByte(CP_ACP, 0, nameW, len, name, name_len, NULL, NULL);
if (ret < len_mb)
{
name[0] = 0;
ret = 1;
}
CryptMemFree(nameW);
return ret;
}
static BOOL cert_get_alt_name_info(PCCERT_CONTEXT cert, BOOL alt_name_issuer, PCERT_ALT_NAME_INFO *info)
{
static const char *oids[][2] =
{
{ szOID_SUBJECT_ALT_NAME2, szOID_SUBJECT_ALT_NAME },
{ szOID_ISSUER_ALT_NAME2, szOID_ISSUER_ALT_NAME },
};
PCERT_EXTENSION ext;
DWORD bytes = 0;
ext = CertFindExtension(oids[!!alt_name_issuer][0], cert->pCertInfo->cExtension, cert->pCertInfo->rgExtension);
if (!ext)
ext = CertFindExtension(oids[!!alt_name_issuer][1], cert->pCertInfo->cExtension, cert->pCertInfo->rgExtension);
if (!ext) return FALSE;
return CryptDecodeObjectEx(cert->dwCertEncodingType, X509_ALTERNATE_NAME, ext->Value.pbData, ext->Value.cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, info, &bytes);
}
static PCERT_ALT_NAME_ENTRY cert_find_next_alt_name_entry(PCERT_ALT_NAME_INFO info, DWORD entry_type,
unsigned int *index)
{
unsigned int i;
for (i = *index; i < info->cAltEntry; ++i)
if (info->rgAltEntry[i].dwAltNameChoice == entry_type)
{
*index = i + 1;
return &info->rgAltEntry[i];
}
return NULL;
}
/* Searches cert's extensions for the alternate name extension with OID
* altNameOID, and if found, searches it for the alternate name type entryType.
* If found, returns a pointer to the entry, otherwise returns NULL.
* Regardless of whether an entry of the desired type is found, if the
* alternate name extension is present, sets *info to the decoded alternate
* name extension, which you must free using LocalFree.
* The return value is a pointer within *info, so don't free *info before
* you're done with the return value.
*/
static PCERT_ALT_NAME_ENTRY cert_find_alt_name_entry(PCCERT_CONTEXT cert, BOOL alt_name_issuer,
DWORD entry_type, PCERT_ALT_NAME_INFO *info)
{
unsigned int index = 0;
if (!cert_get_alt_name_info(cert, alt_name_issuer, info)) return NULL;
return cert_find_next_alt_name_entry(*info, entry_type, &index);
}
static DWORD cert_get_name_from_rdn_attr(DWORD encodingType,
const CERT_NAME_BLOB *name, LPCSTR oid, LPWSTR pszNameString, DWORD cchNameString)
{
CERT_NAME_INFO *nameInfo;
DWORD bytes = 0, ret = 0;
if (CryptDecodeObjectEx(encodingType, X509_NAME, name->pbData,
name->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &nameInfo, &bytes))
{
PCERT_RDN_ATTR nameAttr = NULL;
if (oid)
nameAttr = CertFindRDNAttr(oid, nameInfo);
else
{
static const LPCSTR attributeOIDs[] =
{
szOID_RSA_emailAddr, szOID_COMMON_NAME,
szOID_ORGANIZATIONAL_UNIT_NAME, szOID_ORGANIZATION_NAME
};
DWORD i;
for (i = 0; !nameAttr && i < ARRAY_SIZE(attributeOIDs); i++)
nameAttr = CertFindRDNAttr(attributeOIDs[i], nameInfo);
}
if (nameAttr)
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 cert, DWORD type, DWORD flags, void *type_para,
LPWSTR name_string, DWORD name_len)
{
static const DWORD supported_flags = CERT_NAME_ISSUER_FLAG | CERT_NAME_SEARCH_ALL_NAMES_FLAG;
BOOL alt_name_issuer, search_all_names;
CERT_ALT_NAME_INFO *info = NULL;
PCERT_ALT_NAME_ENTRY entry;
PCERT_NAME_BLOB name;
DWORD ret = 0;
TRACE("(%p, %ld, %08lx, %p, %p, %ld)\n", cert, type, flags, type_para, name_string, name_len);
if (!cert)
goto done;
if (flags & ~supported_flags)
FIXME("Unsupported flags %#lx.\n", flags);
search_all_names = flags & CERT_NAME_SEARCH_ALL_NAMES_FLAG;
if (search_all_names && type != CERT_NAME_DNS_TYPE)
{
WARN("CERT_NAME_SEARCH_ALL_NAMES_FLAG used with type %lu.\n", type);
goto done;
}
alt_name_issuer = flags & CERT_NAME_ISSUER_FLAG;
name = alt_name_issuer ? &cert->pCertInfo->Issuer : &cert->pCertInfo->Subject;
switch (type)
{
case CERT_NAME_EMAIL_TYPE:
{
entry = cert_find_alt_name_entry(cert, alt_name_issuer, CERT_ALT_NAME_RFC822_NAME, &info);
if (entry)
{
ret = copy_output_str(name_string, entry->pwszRfc822Name, name_len);
break;
}
ret = cert_get_name_from_rdn_attr(cert->dwCertEncodingType, name, szOID_RSA_emailAddr,
name_string, name_len);
break;
}
case CERT_NAME_RDN_TYPE:
{
DWORD param = type_para ? *(DWORD *)type_para : 0;
if (name->cbData)
{
ret = CertNameToStrW(cert->dwCertEncodingType, name, param, name_string, name_len);
}
else
{
entry = cert_find_alt_name_entry(cert, alt_name_issuer, CERT_ALT_NAME_DIRECTORY_NAME, &info);
if (entry)
ret = CertNameToStrW(cert->dwCertEncodingType, &entry->DirectoryName,
param, name_string, name_len);
}
break;
}
case CERT_NAME_ATTR_TYPE:
ret = cert_get_name_from_rdn_attr(cert->dwCertEncodingType, name, type_para,
name_string, name_len);
if (ret) break;
entry = cert_find_alt_name_entry(cert, alt_name_issuer, CERT_ALT_NAME_DIRECTORY_NAME, &info);
if (entry)
ret = cert_name_to_str_with_indent(X509_ASN_ENCODING, 0, &entry->DirectoryName,
0, name_string, name_len);
break;
case CERT_NAME_SIMPLE_DISPLAY_TYPE:
{
static const LPCSTR simpleAttributeOIDs[] =
{
szOID_COMMON_NAME, szOID_ORGANIZATIONAL_UNIT_NAME, szOID_ORGANIZATION_NAME, szOID_RSA_emailAddr
};
CERT_NAME_INFO *nameInfo = NULL;
DWORD bytes = 0, i;
if (CryptDecodeObjectEx(cert->dwCertEncodingType, X509_NAME, name->pbData, name->cbData,
CRYPT_DECODE_ALLOC_FLAG, NULL, &nameInfo, &bytes))
{
PCERT_RDN_ATTR nameAttr = NULL;
for (i = 0; !nameAttr && i < ARRAY_SIZE(simpleAttributeOIDs); i++)
nameAttr = CertFindRDNAttr(simpleAttributeOIDs[i], nameInfo);
if (nameAttr)
ret = rdn_value_to_strW(nameAttr->dwValueType, &nameAttr->Value, name_string, name_len, TRUE);
LocalFree(nameInfo);
}
if (ret) break;
entry = cert_find_alt_name_entry(cert, alt_name_issuer, CERT_ALT_NAME_RFC822_NAME, &info);
if (!info) break;
if (!entry && info->cAltEntry)
entry = &info->rgAltEntry[0];
if (entry) ret = copy_output_str(name_string, entry->pwszRfc822Name, name_len);
break;
}
case CERT_NAME_FRIENDLY_DISPLAY_TYPE:
{
DWORD len = name_len;
if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, name_string, &len))
ret = len;
else
ret = CertGetNameStringW(cert, CERT_NAME_SIMPLE_DISPLAY_TYPE, flags,
type_para, name_string, name_len);
break;
}
case CERT_NAME_DNS_TYPE:
{
unsigned int index = 0, len;
if (cert_get_alt_name_info(cert, alt_name_issuer, &info)
&& (entry = cert_find_next_alt_name_entry(info, CERT_ALT_NAME_DNS_NAME, &index)))
{
if (search_all_names)
{
do
{
if (name_string && name_len == 1) break;
ret += len = copy_output_str(name_string, entry->pwszDNSName, name_len ? name_len - 1 : 0);
if (name_string && name_len)
{
name_string += len;
name_len -= len;
}
}
while ((entry = cert_find_next_alt_name_entry(info, CERT_ALT_NAME_DNS_NAME, &index)));
}
else ret = copy_output_str(name_string, entry->pwszDNSName, name_len);
}
else
{
if (!search_all_names || name_len != 1)
{
len = search_all_names && name_len ? name_len - 1 : name_len;
ret = cert_get_name_from_rdn_attr(cert->dwCertEncodingType, name, szOID_COMMON_NAME,
name_string, len);
if (name_string) name_string += ret;
}
}
if (search_all_names)
{
if (name_string && name_len) *name_string = 0;
++ret;
}
break;
}
case CERT_NAME_URL_TYPE:
{
if ((entry = cert_find_alt_name_entry(cert, alt_name_issuer, CERT_ALT_NAME_URL, &info)))
ret = copy_output_str(name_string, entry->pwszURL, name_len);
break;
}
default:
FIXME("unimplemented for type %lu.\n", type);
ret = 0;
break;
}
done:
if (info)
LocalFree(info);
if (!ret)
{
ret = 1;
if (name_string && name_len) name_string[0] = 0;
}
return ret;
}
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