BOOL GetProgAndPublisherInfo()

in tools/FileSignatureInfo/FileSignatureInfo.cpp [344:471]
106 lines of code
14 McCabe index (conditional complexity)

BOOL GetProgAndPublisherInfo(PCMSG_SIGNER_INFO pSignerInfo,
    PSPROG_PUBLISHERINFO Info)
{
    BOOL fReturn = FALSE;
    PSPC_SP_OPUS_INFO OpusInfo = NULL;
    DWORD dwData;
    BOOL fResult;

    __try
    {
        // Loop through authenticated attributes and find
        // SPC_SP_OPUS_INFO_OBJID OID.
        for (DWORD n = 0; n < pSignerInfo->AuthAttrs.cAttr; n++)
        {
            if (lstrcmpA(SPC_SP_OPUS_INFO_OBJID,
                pSignerInfo->AuthAttrs.rgAttr[n].pszObjId) == 0)
            {
                // Get Size of SPC_SP_OPUS_INFO structure.
                fResult = CryptDecodeObject(ENCODING,
                    SPC_SP_OPUS_INFO_OBJID,
                    pSignerInfo->AuthAttrs.rgAttr[n].rgValue[0].pbData,
                    pSignerInfo->AuthAttrs.rgAttr[n].rgValue[0].cbData,
                    0,
                    NULL,
                    &dwData);
                if (!fResult)
                {
                    _tprintf(_T("CryptDecodeObject failed with %x\n"),
                        GetLastError());
                    __leave;
                }

                // Allocate memory for SPC_SP_OPUS_INFO structure.
                OpusInfo = (PSPC_SP_OPUS_INFO)LocalAlloc(LPTR, dwData);
                if (!OpusInfo)
                {
                    _tprintf(_T("Unable to allocate memory for Publisher Info.\n"));
                    __leave;
                }

                // Decode and get SPC_SP_OPUS_INFO structure.
                fResult = CryptDecodeObject(ENCODING,
                    SPC_SP_OPUS_INFO_OBJID,
                    pSignerInfo->AuthAttrs.rgAttr[n].rgValue[0].pbData,
                    pSignerInfo->AuthAttrs.rgAttr[n].rgValue[0].cbData,
                    0,
                    OpusInfo,
                    &dwData);
                if (!fResult)
                {
                    _tprintf(_T("CryptDecodeObject failed with %x\n"),
                        GetLastError());
                    __leave;
                }

                // Fill in Program Name if present.
                if (OpusInfo->pwszProgramName)
                {
                    Info->lpszProgramName =
                        AllocateAndCopyWideString(OpusInfo->pwszProgramName);
                }
                else
                    Info->lpszProgramName = NULL;

                // Fill in Publisher Information if present.
                if (OpusInfo->pPublisherInfo)
                {

                    switch (OpusInfo->pPublisherInfo->dwLinkChoice)
                    {
                    case SPC_URL_LINK_CHOICE:
                        Info->lpszPublisherLink =
                            AllocateAndCopyWideString(OpusInfo->pPublisherInfo->pwszUrl);
                        break;

                    case SPC_FILE_LINK_CHOICE:
                        Info->lpszPublisherLink =
                            AllocateAndCopyWideString(OpusInfo->pPublisherInfo->pwszFile);
                        break;

                    default:
                        Info->lpszPublisherLink = NULL;
                        break;
                    }
                }
                else
                {
                    Info->lpszPublisherLink = NULL;
                }

                // Fill in More Info if present.
                if (OpusInfo->pMoreInfo)
                {
                    switch (OpusInfo->pMoreInfo->dwLinkChoice)
                    {
                    case SPC_URL_LINK_CHOICE:
                        Info->lpszMoreInfoLink =
                            AllocateAndCopyWideString(OpusInfo->pMoreInfo->pwszUrl);
                        break;

                    case SPC_FILE_LINK_CHOICE:
                        Info->lpszMoreInfoLink =
                            AllocateAndCopyWideString(OpusInfo->pMoreInfo->pwszFile);
                        break;

                    default:
                        Info->lpszMoreInfoLink = NULL;
                        break;
                    }
                }
                else
                {
                    Info->lpszMoreInfoLink = NULL;
                }

                fReturn = TRUE;

                break; // Break from for loop.
            } // lstrcmp SPC_SP_OPUS_INFO_OBJID
        } // for
    }
    __finally
    {
        if (OpusInfo != NULL) LocalFree(OpusInfo);
    }

    return fReturn;
}