puttygen.c

远程登陆工具软件源码 用于远程登陆unix

	    column = 0;
	}
    }
    if (column > 0)
	fputc('\n', fp);
    
    fprintf(fp, "---- END SSH2 PUBLIC KEY ----\n");
    fclose(fp);
    sfree(pub_blob);
    return 1;
}

enum {
    controlidstart = 100,
    IDC_QUIT,
    IDC_TITLE,
    IDC_BOX_KEY,
    IDC_NOKEY,
    IDC_GENERATING,
    IDC_PROGRESS,
    IDC_PKSTATIC, IDC_KEYDISPLAY,
    IDC_FPSTATIC, IDC_FINGERPRINT,
    IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
    IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
    IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT,
    IDC_BOX_ACTIONS,
    IDC_GENSTATIC, IDC_GENERATE,
    IDC_LOADSTATIC, IDC_LOAD,
    IDC_SAVESTATIC, IDC_SAVE, IDC_SAVEPUB,
    IDC_BOX_PARAMS,
    IDC_TYPESTATIC, IDC_KEYSSH1, IDC_KEYSSH2RSA, IDC_KEYSSH2DSA,
    IDC_BITSSTATIC, IDC_BITS,
    IDC_ABOUT,
    IDC_GIVEHELP,
    IDC_IMPORT, IDC_EXPORT_OPENSSH, IDC_EXPORT_SSHCOM
};

static const int nokey_ids[] = { IDC_NOKEY, 0 };
static const int generating_ids[] = { IDC_GENERATING, IDC_PROGRESS, 0 };
static const int gotkey_ids[] = {
    IDC_PKSTATIC, IDC_KEYDISPLAY,
    IDC_FPSTATIC, IDC_FINGERPRINT,
    IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
    IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
    IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT, 0
};

/*
 * Small UI helper function to switch the state of the main dialog
 * by enabling and disabling controls and menu items.
 */
void ui_set_state(HWND hwnd, struct MainDlgState *state, int status)
{
    int type;

    switch (status) {
      case 0:			       /* no key */
	hidemany(hwnd, nokey_ids, FALSE);
	hidemany(hwnd, generating_ids, TRUE);
	hidemany(hwnd, gotkey_ids, TRUE);
	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH1), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2RSA), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2DSA), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_BITS), 1);
	EnableMenuItem(state->filemenu, IDC_LOAD, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->filemenu, IDC_SAVE, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->filemenu, IDC_SAVEPUB, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_GENERATE, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH1, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH2RSA, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH2DSA, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_IMPORT, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_EXPORT_OPENSSH,
		       MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_EXPORT_SSHCOM,
		       MF_GRAYED|MF_BYCOMMAND);
	break;
      case 1:			       /* generating key */
	hidemany(hwnd, nokey_ids, TRUE);
	hidemany(hwnd, generating_ids, FALSE);
	hidemany(hwnd, gotkey_ids, TRUE);
	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH1), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2RSA), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2DSA), 0);
	EnableWindow(GetDlgItem(hwnd, IDC_BITS), 0);
	EnableMenuItem(state->filemenu, IDC_LOAD, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->filemenu, IDC_SAVE, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->filemenu, IDC_SAVEPUB, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_GENERATE, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH1, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH2RSA, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH2DSA, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_IMPORT, MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_EXPORT_OPENSSH,
		       MF_GRAYED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_EXPORT_SSHCOM,
		       MF_GRAYED|MF_BYCOMMAND);
	break;
      case 2:
	hidemany(hwnd, nokey_ids, TRUE);
	hidemany(hwnd, generating_ids, TRUE);
	hidemany(hwnd, gotkey_ids, FALSE);
	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH1), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2RSA), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2DSA), 1);
	EnableWindow(GetDlgItem(hwnd, IDC_BITS), 1);
	EnableMenuItem(state->filemenu, IDC_LOAD, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->filemenu, IDC_SAVE, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->filemenu, IDC_SAVEPUB, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_GENERATE, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH1, MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH2RSA,MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->keymenu, IDC_KEYSSH2DSA,MF_ENABLED|MF_BYCOMMAND);
	EnableMenuItem(state->cvtmenu, IDC_IMPORT, MF_ENABLED|MF_BYCOMMAND);
	/*
	 * Enable export menu items if and only if the key type
	 * supports this kind of export.
	 */
	type = state->ssh2 ? SSH_KEYTYPE_SSH2 : SSH_KEYTYPE_SSH1;
#define do_export_menuitem(x,y) \
    EnableMenuItem(state->cvtmenu, x, MF_BYCOMMAND | \
		       (import_target_type(y)==type?MF_ENABLED:MF_GRAYED))
	do_export_menuitem(IDC_EXPORT_OPENSSH, SSH_KEYTYPE_OPENSSH);
	do_export_menuitem(IDC_EXPORT_SSHCOM, SSH_KEYTYPE_SSHCOM);
#undef do_export_menuitem
	break;
    }
}

void load_key_file(HWND hwnd, struct MainDlgState *state,
		   Filename filename, int was_import_cmd)
{
    char passphrase[PASSPHRASE_MAXLEN];
    int needs_pass;
    int type, realtype;
    int ret;
    char *comment;
    struct PassphraseProcStruct pps;
    struct RSAKey newkey1;
    struct ssh2_userkey *newkey2 = NULL;

    type = realtype = key_type(&filename);
    if (type != SSH_KEYTYPE_SSH1 &&
	type != SSH_KEYTYPE_SSH2 &&
	!import_possible(type)) {
	char msg[256];
	sprintf(msg, "Couldn't load private key (%s)",
		key_type_to_str(type));
	MessageBox(NULL, msg,
		   "PuTTYgen Error", MB_OK | MB_ICONERROR);
	return;
    }

    if (type != SSH_KEYTYPE_SSH1 &&
	type != SSH_KEYTYPE_SSH2) {
	realtype = type;
	type = import_target_type(type);
    }

    comment = NULL;
    if (realtype == SSH_KEYTYPE_SSH1)
	needs_pass = rsakey_encrypted(&filename, &comment);
    else if (realtype == SSH_KEYTYPE_SSH2)
	needs_pass =
	ssh2_userkey_encrypted(&filename, &comment);
    else
	needs_pass = import_encrypted(&filename, realtype,
				      &comment);
    pps.passphrase = passphrase;
    pps.comment = comment;
    do {
	if (needs_pass) {
	    int dlgret;
	    dlgret = DialogBoxParam(hinst,
				    MAKEINTRESOURCE(210),
				    NULL, PassphraseProc,
				    (LPARAM) & pps);
	    if (!dlgret) {
		ret = -2;
		break;
	    }
	} else
	    *passphrase = '\0';
	if (type == SSH_KEYTYPE_SSH1) {
	    if (realtype == type)
		ret = loadrsakey(&filename, &newkey1,
				 passphrase, NULL);
	    else
		ret = import_ssh1(&filename, realtype,
				  &newkey1, passphrase);
	} else {
	    if (realtype == type)
		newkey2 = ssh2_load_userkey(&filename,
					    passphrase, NULL);
	    else
		newkey2 = import_ssh2(&filename, realtype,
				      passphrase);
	    if (newkey2 == SSH2_WRONG_PASSPHRASE)
		ret = -1;
	    else if (!newkey2)
		ret = 0;
	    else
		ret = 1;
	}
    } while (ret == -1);
    if (comment)
	sfree(comment);
    if (ret == 0) {
	MessageBox(NULL, "Couldn't load private key.",
		   "PuTTYgen Error", MB_OK | MB_ICONERROR);
    } else if (ret == 1) {
	/*
	 * Now update the key controls with all the
	 * key data.
	 */
	{
	    SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
			   passphrase);
	    SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
			   passphrase);
	    if (type == SSH_KEYTYPE_SSH1) {
		char buf[128];
		char *savecomment;

		state->ssh2 = FALSE;
		state->commentptr = &state->key.comment;
		state->key = newkey1;

		/*
		 * Set the key fingerprint.
		 */
		savecomment = state->key.comment;
		state->key.comment = NULL;
		rsa_fingerprint(buf, sizeof(buf),
				&state->key);
		state->key.comment = savecomment;

		SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
		/*
		 * Construct a decimal representation
		 * of the key, for pasting into
		 * .ssh/authorized_keys on a Unix box.
		 */
		setupbigedit1(hwnd, IDC_KEYDISPLAY,
			      IDC_PKSTATIC, &state->key);
	    } else {
		char *fp;
		char *savecomment;

		state->ssh2 = TRUE;
		state->commentptr =
		    &state->ssh2key.comment;
		state->ssh2key = *newkey2;	/* structure copy */
		sfree(newkey2);

		savecomment = state->ssh2key.comment;
		state->ssh2key.comment = NULL;
		fp =
		    state->ssh2key.alg->
		    fingerprint(state->ssh2key.data);
		state->ssh2key.comment = savecomment;

		SetDlgItemText(hwnd, IDC_FINGERPRINT, fp);
		sfree(fp);

		setupbigedit2(hwnd, IDC_KEYDISPLAY,
			      IDC_PKSTATIC, &state->ssh2key);
	    }
	    SetDlgItemText(hwnd, IDC_COMMENTEDIT,
			   *state->commentptr);
	}
	/*
	 * Finally, hide the progress bar and show
	 * the key data.
	 */
	ui_set_state(hwnd, state, 2);
	state->key_exists = TRUE;

	/*
	 * If the user has imported a foreign key
	 * using the Load command, let them know.
	 * If they've used the Import command, be
	 * silent.
	 */
	if (realtype != type && !was_import_cmd) {
	    char msg[512];
	    sprintf(msg, "Successfully imported foreign key\n"
		    "(%s).\n"
		    "To use this key with PuTTY, you need to\n"
		    "use the \"Save private key\" command to\n"
		    "save it in PuTTY's own format.",
		    key_type_to_str(realtype));
	    MessageBox(NULL, msg, "PuTTYgen Notice",
		       MB_OK | MB_ICONINFORMATION);
	}
    }
}

/*
 * Dialog-box function for the main PuTTYgen dialog box.
 */
static int CALLBACK MainDlgProc(HWND hwnd, UINT msg,
				WPARAM wParam, LPARAM lParam)
{
    static const char generating_msg[] =
	"Please wait while a key is generated...";
    static const char entropy_msg[] =
	"Please generate some randomness by moving the mouse over the blank area.";
    struct MainDlgState *state;

    switch (msg) {
      case WM_INITDIALOG:
        if (help_path)
            SetWindowLong(hwnd, GWL_EXSTYLE,
                          GetWindowLong(hwnd, GWL_EXSTYLE) | WS_EX_CONTEXTHELP);
        else {
            /*
             * If we add a Help button, this is where we destroy it
             * if the help file isn't present.
             */
        }
        requested_help = FALSE;
	SendMessage(hwnd, WM_SETICON, (WPARAM) ICON_BIG,
		    (LPARAM) LoadIcon(hinst, MAKEINTRESOURCE(200)));

	state = snew(struct MainDlgState);
	state->generation_thread_exists = FALSE;
	state->collecting_entropy = FALSE;
	state->entropy = NULL;
	state->key_exists = FALSE;
	SetWindowLong(hwnd, GWL_USERDATA, (LONG) state);
	{
	    HMENU menu, menu1;

	    menu = CreateMenu();

	    menu1 = CreateMenu();
	    AppendMenu(menu1, MF_ENABLED, IDC_LOAD, "&Load private key");
	    AppendMenu(menu1, MF_ENABLED, IDC_SAVEPUB, "Save p&ublic key");
	    AppendMenu(menu1, MF_ENABLED, IDC_SAVE, "&Save private key");
	    AppendMenu(menu1, MF_SEPARATOR, 0, 0);
	    AppendMenu(menu1, MF_ENABLED, IDC_QUIT, "E&xit");
	    AppendMenu(menu, MF_POPUP | MF_ENABLED, (UINT) menu1, "&File");
	    state->filemenu = menu1;

	    menu1 = CreateMenu();
	    AppendMenu(menu1, MF_ENABLED, IDC_GENERATE, "&Generate key pair");
	    AppendMenu(menu1, MF_SEPARATOR, 0, 0);
	    AppendMenu(menu1, MF_ENABLED, IDC_KEYSSH1, "SSH&1 key (RSA)");
	    AppendMenu(menu1, MF_ENABLED, IDC_KEYSSH2RSA, "SSH2 &RSA key");
	    AppendMenu(menu1, MF_ENABLED, IDC_KEYSSH2DSA, "SSH2 &DSA key");
	    AppendMenu(menu, MF_POPUP | MF_ENABLED, (UINT) menu1, "&Key");
	    state->keymenu = menu1;

	    menu1 = CreateMenu();
	    AppendMenu(menu1, MF_ENABLED, IDC_IMPORT, "&Import key");
	    AppendMenu(menu1, MF_SEPARATOR, 0, 0);
	    AppendMenu(menu1, MF_ENABLED, IDC_EXPORT_OPENSSH,
		       "Export &OpenSSH key");
	    AppendMenu(menu1, MF_ENABLED, IDC_EXPORT_SSHCOM,
		       "Export &ssh.com key");
	    AppendMenu(menu, MF_POPUP | MF_ENABLED, (UINT) menu1,
		       "Con&versions");
	    state->cvtmenu = menu1;

	    menu1 = CreateMenu();
	    AppendMenu(menu1, MF_ENABLED, IDC_ABOUT, "&About");
	    if (help_path)
		AppendMenu(menu1, MF_ENABLED, IDC_GIVEHELP, "&Help");
	    AppendMenu(menu, MF_POPUP | MF_ENABLED, (UINT) menu1, "&Help");

	    SetMenu(hwnd, menu);
	}

	/*
	 * Centre the window.
	 */
	{			       /* centre the window */
	    RECT rs, rd;
	    HWND hw;

	    hw = GetDesktopWindow();
	    if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd))
		MoveWindow(hwnd,
			   (rs.right + rs.left + rd.left - rd.right) / 2,
			   (rs.bottom + rs.top + rd.top - rd.bottom) / 2,
			   rd.right - rd.left, rd.bottom - rd.top, TRUE);
	}

	{
	    struct ctlpos cp, cp2;

	    /* Accelerators used: acglops1rbd */

	    ctlposinit(&cp, hwnd, 4, 4, 4);
	    beginbox(&cp, "Key", IDC_BOX_KEY);
	    cp2 = cp;
	    statictext(&cp2, "No key.", 1, IDC_NOKEY);
	    cp2 = cp;
	    statictext(&cp2, "", 1, IDC_GENERATING);
	    progressbar(&cp2, IDC_PROGRESS);
	    bigeditctrl(&cp,
			"&Public key for pasting into authorized_keys file:",
			IDC_PKSTATIC, IDC_KEYDISPLAY, 5);
	    SendDlgItemMessage(hwnd, IDC_KEYDISPLAY, EM_SETREADONLY, 1, 0);
	    staticedit(&cp, "Key f&ingerprint:", IDC_FPSTATIC,
		       IDC_FINGERPRINT, 75);
	    SendDlgItemMessage(hwnd, IDC_FINGERPRINT, EM_SETREADONLY, 1,
			       0);
	    staticedit(&cp, "Key &comment:", IDC_COMMENTSTATIC,
		       IDC_COMMENTEDIT, 75);
	    staticpassedit(&cp, "Key p&assphrase:", IDC_PASSPHRASE1STATIC,
			   IDC_PASSPHRASE1EDIT, 75);
	    staticpassedit(&cp, "C&onfirm passphrase:",
			   IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT, 75);
	    endbox(&cp);
	    beginbox(&cp, "Actions", IDC_BOX_ACTIONS);
	    staticbtn(&cp, "Generate a public/private key pair",
		      IDC_GENSTATIC, "&Generate", IDC_GENERATE);
	    staticbtn(&cp, "Load an existing private key file",
		      IDC_LOADSTATIC, "&Load", IDC_LOAD);
	    static2btn(&cp, "Save the generated key", IDC_SAVESTATIC,
		       "Save p&ublic key", IDC_SAVEPUB,
		       "&Save private key", IDC_SAVE);
	    endbox(&cp);
	    beginbox(&cp, "Parameters", IDC_BOX_PARAMS);
	    radioline(&cp, "Type of key to generate:", IDC_TYPESTATIC, 3,
		      "SSH&1 (RSA)", IDC_KEYSSH1,
		      "SSH2 &RSA", IDC_KEYSSH2RSA,
		      "SSH2 &DSA", IDC_KEYSSH2DSA, NULL);
	    staticedit(&cp, "Number of &bits in a generated key:",
		       IDC_BITSSTATIC, IDC_BITS, 20);
	    endbox(&cp);
	}
	CheckRadioButton(hwnd, IDC_KEYSSH1, IDC_KEYSSH2DSA, IDC_KEYSSH2RSA);
	CheckMenuRadioItem(state->keymenu, IDC_KEYSSH1, IDC_KEYSSH2DSA,
			   IDC_KEYSSH1, MF_BYCOMMAND);
	SetDlgItemInt(hwnd, IDC_BITS, DEFAULT_KEYSIZE, FALSE);

	/*
	 * Initially, hide the progress bar and the key display,
	 * and show the no-key display. Also disable the Save
	 * buttons, because with no key we obviously can't save
	 * anything.
	 */
	ui_set_state(hwnd, state, 0);

	/*
	 * Load a key file if one was provided on the command line.
	 */
	if (cmdline_keyfile)
	    load_key_file(hwnd, state, filename_from_str(cmdline_keyfile), 0);

	return 1;
      case WM_MOUSEMOVE:
	state = (struct MainDlgState *) GetWindowLong(hwnd, GWL_USERDATA);
	if (state->collecting_entropy &&
	    state->entropy && state->entropy_got < state->entropy_required) {
	    state->entropy[state->entropy_got++] = lParam;
	    state->entropy[state->entropy_got++] = GetMessageTime();
	    SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS,
			       state->entropy_got, 0);
	    if (state->entropy_got >= state->entropy_required) {
		struct rsa_key_thread_params *params;
		DWORD threadid;

		/*
		 * Seed the entropy pool
		 */
		random_add_heavynoise(state->entropy, state->entropy_size);
		memset(state->entropy, 0, state->entropy_size);
		sfree(state->entropy);