FB::variant webpgPluginAPI::gpgSignText	(	const FB::VariantList &	signers,
		const std::string &	plain_text,
		int	sign_mode
	)

Signs the text specified in plain_text with the key ids specified in signers, with the signature mode specified in sign_mode.

Parameters:

signers	The key ids to sign with.
plain_text	The data to sign.
sign_mode	The GPGME_SIG_MODE to use for signing.

Returns:: FB::variant response

response {
    "data":"—————BEGIN PGP SIGNED MESSAGE—————
            Hash: SHA1
            
            This is some text to sign...
            —————BEGIN PGP SIGNATURE—————
            Version: GnuPG v1.4.11 (GNU/Linux)
            
            iQEcBAEBAgAGBQJQTQWwAAoJEMWZcR9egruTsp8H/A/qNCyzSsoVR+VeQQTEBcfi
            OpJkwQ5BCm2/5ZdlFATijaHe3s1C2OYUmncb3Z+OIIy8FNzCuMboNl83m5ro0Ng8
            IgSAcVJpLlVwbkAfGyWqmQ48yS7gDqb0pUSgkhEgCnMn+yDtFWPgAVTiKpuWJpf8
            NiIO1cNm+3RwSnftSxGDLTUu3UoXh7BZXnoOMa63fUukF3duzIrIUhav8zg/Vfrb
            JK7tC2UPRGJCVREr/2EEYvpasHxHX2yJpT+cYM1ChCGgo+Kd3OX4sDRAALZ+7Gwm
            NdrvT57QxQ7Y/cSd5H+c3/vpYzSwwmXmK+/m3uVUHIdccOvGNg7vNg8aYSfR1FY=
            =v9Ab
            —————END PGP SIGNATURE—————",
    "error":false
}

Definition at line 1585 of file webpgPluginAPI.cpp.

References get_gpgme_ctx().

Referenced by webpgPluginAPI().

{
    gpgme_ctx_t ctx = get_gpgme_ctx();
    gpgme_error_t err;
    gpgme_data_t in, out;
    gpgme_key_t key;
    gpgme_sig_mode_t sig_mode;
    gpgme_sign_result_t sign_result;
    int nsigners;
    FB::variant signer;
    FB::VariantMap result;

    if (sign_mode == 0)
        sig_mode = GPGME_SIG_MODE_NORMAL;
    else if (sign_mode == 1)
        sig_mode = GPGME_SIG_MODE_DETACH;
    else if (sign_mode == 2)
        sig_mode = GPGME_SIG_MODE_CLEAR;

    for (nsigners=0; nsigners < signers.size(); nsigners++) {
        signer = signers[nsigners];
        err = gpgme_op_keylist_start (ctx, signer.convert_cast<std::string>().c_str(), 0);
        if (err != GPG_ERR_NO_ERROR)
            return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

        err = gpgme_op_keylist_next (ctx, &key);
        if (err != GPG_ERR_NO_ERROR)
            return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

        err = gpgme_op_keylist_end (ctx);
        if (err != GPG_ERR_NO_ERROR)
            return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

        err = gpgme_signers_add (ctx, key);
        if (err != GPG_ERR_NO_ERROR)
            return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

        gpgme_key_unref (key);

    }

    if (!nsigners > 0)
        return get_error_map(__func__, -1, "No signing keys found", __LINE__, __FILE__);

    err = gpgme_data_new_from_mem (&in, plain_text.c_str(), plain_text.length(), 0);
    if (err != GPG_ERR_NO_ERROR)
        return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

    err = gpgme_data_new (&out);
    if (err != GPG_ERR_NO_ERROR)
        return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

    err = gpgme_op_sign(ctx, in, out, sig_mode);
    if (err != GPG_ERR_NO_ERROR)
        return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

    sign_result = gpgme_op_sign_result (ctx);

    if (!sign_result)
        return get_error_map(__func__,  gpgme_err_code (err), "The signed result is invalid", __LINE__, __FILE__);

    gpgme_data_seek(out, 0, SEEK_SET);

    size_t out_size = 0;
    std::string out_buf;
    out_buf = gpgme_data_release_and_get_mem (out, &out_size);
    /* strip the size_t data out of the output buffer */
    out_buf = out_buf.substr(0, out_size);
    /* set the output object to NULL since it has
        already been released */
    out = NULL;

    result["error"] = false;
    result["data"] = out_buf;

    gpgme_data_release (in);
    gpgme_release (ctx);

    return result;

}

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