wf_defaults.c

 
#include <windows.h>
#include <wincred.h>
#include <stdio.h>
#include <malloc.h>
#include <freerdp/settings.h>
 
#include "wf_defaults.h"
 
static PCWSTR ValidateString(const BYTE* pb, ULONG cb)
{
  if (!pb || !cb)
    return 0;
 
  if (cb % sizeof(WCHAR) != 0)
    return 0;
 
  return (PCWSTR)pb;
}
 
static void AddDefaultSettings_I(rdpSettings* settings, size_t idHostname, size_t idUsername,
                                 size_t idDomain, size_t idPassword)
{
  static const PSTR TERMSRV = "TERMSRV/%s";
 
  PSTR TargetName = nullptr;
  PSTR UserName = nullptr;
  PWSTR TargetNameW = nullptr;
  PWSTR ServerHostNameW = nullptr;
  PWSTR ParsedUserNameW = nullptr;
  PWSTR ParsedDomainW = nullptr;
  PWSTR PasswordNullTerminatedW = nullptr;
  PCREDENTIALW Credential = WINPR_C_ARRAY_INIT;
 
  PCSTR ServerHostname = freerdp_settings_get_string(settings, idHostname);
 
  if (!ServerHostname)
    return;
 
  BOOL bExistUserName = freerdp_settings_get_string(settings, idUsername) != 0;
  BOOL bExistPassword = freerdp_settings_get_string(settings, idPassword) != 0;
 
  if (bExistUserName && bExistPassword)
    return;
 
  int len = _snprintf(TargetName, 0, TERMSRV, ServerHostname);
  if (len < 0)
    goto fail;
 
  len++;
  TargetName = (PSTR)malloc(len);
 
  if (!TargetName)
    goto fail;
 
  const int rlen = _snprintf(TargetName, len, TERMSRV, ServerHostname);
  if (rlen < 0)
    goto fail;
 
  TargetName[len - 1] = 0;
 
  TargetNameW = ConvertUtf8ToWCharAlloc(TargetName, nullptr);
  if (!TargetNameW)
    goto fail;
 
  if (!CredReadW(TargetNameW, CRED_TYPE_GENERIC, 0, &Credential))
    goto fail;
 
  if (!bExistPassword)
  {
    const WCHAR* PasswordW =
        ValidateString(Credential->CredentialBlob, Credential->CredentialBlobSize);
 
    PasswordNullTerminatedW = (PWSTR)calloc(Credential->CredentialBlobSize + 1, sizeof(WCHAR));
 
    if (!PasswordNullTerminatedW)
      goto fail;
 
    memcpy(PasswordNullTerminatedW, PasswordW, Credential->CredentialBlobSize * sizeof(WCHAR));
 
    if (PasswordNullTerminatedW)
    {
      if (!freerdp_settings_set_string_from_utf16(settings, idPassword,
                                                  PasswordNullTerminatedW))
      {
        goto fail;
      }
    }
  }
 
  if (!bExistUserName)
  {
    const WCHAR* UserNameW = Credential->UserName;
 
    if (UserNameW)
    {
      ParsedUserNameW = calloc(CREDUI_MAX_USERNAME_LENGTH + 1, sizeof(WCHAR));
      if (!ParsedUserNameW)
        goto fail;
 
      ParsedDomainW = calloc(CREDUI_MAX_DOMAIN_TARGET_LENGTH + 1, sizeof(WCHAR));
      if (!ParsedDomainW)
        goto fail;
 
      DWORD ParseResult =
          CredUIParseUserNameW(UserNameW, ParsedUserNameW, CREDUI_MAX_USERNAME_LENGTH + 1,
                               ParsedDomainW, CREDUI_MAX_DOMAIN_TARGET_LENGTH + 1);
 
      if (ParseResult == NO_ERROR)
      {
        if (!freerdp_settings_set_string_from_utf16(settings, idUsername, ParsedUserNameW))
          goto fail;
 
        if (*ParsedDomainW != 0)
        {
          if (!freerdp_settings_set_string_from_utf16(settings, idDomain, ParsedDomainW))
            goto fail;
        }
      }
      else if (ParseResult == ERROR_INVALID_ACCOUNT_NAME)
      {
        if (!freerdp_settings_set_string_from_utf16(settings, idUsername, UserNameW))
          goto fail;
      }
    }
  }
 
fail:
  if (Credential)
  {
    CredFree(Credential);
  }
  free(TargetName);
  free(UserName);
  free(TargetNameW);
  free(ServerHostNameW);
  free(ParsedUserNameW);
  free(ParsedDomainW);
  free(PasswordNullTerminatedW);
  return;
}
 
void WINAPI AddDefaultSettings(rdpSettings* settings)
{
  AddDefaultSettings_I(settings, FreeRDP_ServerHostname, FreeRDP_Username, FreeRDP_Domain,
                       FreeRDP_Password);
  AddDefaultSettings_I(settings, FreeRDP_GatewayHostname, FreeRDP_GatewayUsername,
                       FreeRDP_GatewayDomain, FreeRDP_GatewayPassword);
}