[sgt/putty] / puttygen.c

/*
 * PuTTY key generation front end.
 */

#include <windows.h>
#include <commctrl.h>
#include <time.h>
#ifndef NO_SECURITY
#include <aclapi.h>
#endif
#include <stdio.h>

#define PUTTY_DO_GLOBALS

#include "putty.h"
#include "ssh.h"
#include "winstuff.h"

#define WM_DONEKEY (WM_XUSER + 1)

#define KEYSIZE 1024

/*
 * TODO:
 *  - prompt before overwriting an existing file
 *  - check the return value from saversakey()
 *  - test the generated keys for actual working-RSA-key-hood
 *  - variable key size
 */

/* ----------------------------------------------------------------------
 * Progress report code. This is really horrible :-)
 */
#define PHASE1TOTAL 0x10000
#define PHASE2TOTAL 0x10000
#define PHASE3TOTAL 0x04000
#define PHASE1START 0
#define PHASE2START (PHASE1TOTAL)
#define PHASE3START (PHASE1TOTAL + PHASE2TOTAL)
#define TOTALTOTAL  (PHASE1TOTAL + PHASE2TOTAL + PHASE3TOTAL)
#define PROGRESSBIGRANGE 65535
#define DIVISOR     ((TOTALTOTAL + PROGRESSBIGRANGE - 1) / PROGRESSBIGRANGE)
#define PROGRESSRANGE (TOTALTOTAL / DIVISOR)
struct progress {
    unsigned phase1param, phase1current, phase1n;
    unsigned phase2param, phase2current, phase2n;
    unsigned phase3mult;
    HWND progbar;
};

static void progress_update(void *param, int phase, int iprogress) {
    struct progress *p = (struct progress *)param;
    unsigned progress = iprogress;
    int position;

    switch (phase) {
      case -1:
        p->phase1param = 0x10000 + progress;
        p->phase1current = 0x10000; p->phase1n = 0;
        return;
      case -2:
        p->phase2param = 0x10000 + progress;
        p->phase2current = 0x10000; p->phase2n = 0;
        return;
      case -3:
        p->phase3mult = PHASE3TOTAL / progress;
        return;
      case 1:
        while (p->phase1n < progress) {
            p->phase1n++;
            p->phase1current *= p->phase1param;
            p->phase1current /= 0x10000;
        }
        position = PHASE1START + 0x10000 - p->phase1current;
        break;
      case 2:
        while (p->phase2n < progress) {
            p->phase2n++;
            p->phase2current *= p->phase2param;
            p->phase2current /= 0x10000;
        }
        position = PHASE2START + 0x10000 - p->phase2current;
        break;
      case 3:
        position = PHASE3START + progress * p->phase3mult;
        break;
    }

    SendMessage(p->progbar, PBM_SETPOS, position / DIVISOR, 0);
}

extern char ver[];

#define PASSPHRASE_MAXLEN 512

struct PassphraseProcStruct {
    char *passphrase;
    char *comment;
};

/*
 * Dialog-box function for the passphrase box.
 */
static int CALLBACK PassphraseProc(HWND hwnd, UINT msg,
                                   WPARAM wParam, LPARAM lParam) {
    static char *passphrase;
    struct PassphraseProcStruct *p;

    switch (msg) {
      case WM_INITDIALOG:
        SetForegroundWindow(hwnd);
        SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0,
                      SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
        p = (struct PassphraseProcStruct *)lParam;
        passphrase = p->passphrase;
        if (p->comment)
            SetDlgItemText(hwnd, 101, p->comment);
        *passphrase = 0;
        return 0;
      case WM_COMMAND:
	switch (LOWORD(wParam)) {
	  case IDOK:
	    if (*passphrase)
		EndDialog (hwnd, 1);
	    else
		MessageBeep (0);
	    return 0;
	  case IDCANCEL:
	    EndDialog (hwnd, 0);
	    return 0;
          case 102:                    /* edit box */
	    if (HIWORD(wParam) == EN_CHANGE) {
                GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1);
                passphrase[PASSPHRASE_MAXLEN-1] = '\0';
            }
            return 0;
	}
	return 0;
      case WM_CLOSE:
	EndDialog (hwnd, 0);
	return 0;
    }
    return 0;
}

/*
 * Prompt for a key file. Assumes the filename buffer is of size
 * FILENAME_MAX.
 */
static int prompt_keyfile(HWND hwnd, char *dlgtitle,
                          char *filename, int save) {
    OPENFILENAME of;
    memset(&of, 0, sizeof(of));
#ifdef OPENFILENAME_SIZE_VERSION_400
    of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
#else
    of.lStructSize = sizeof(of);
#endif
    of.hwndOwner = hwnd;
    of.lpstrFilter = "All Files\0*\0\0\0";
    of.lpstrCustomFilter = NULL;
    of.nFilterIndex = 1;
    of.lpstrFile = filename; *filename = '\0';
    of.nMaxFile = FILENAME_MAX;
    of.lpstrFileTitle = NULL;
    of.lpstrInitialDir = NULL;
    of.lpstrTitle = dlgtitle;
    of.Flags = 0;
    if (save)
        return GetSaveFileName(&of);
    else
        return GetOpenFileName(&of);
}

/*
 * This function is needed to link with the DES code. We need not
 * have it do anything at all.
 */
void logevent(char *msg) {
}

/*
 * Dialog-box function for the Licence box.
 */
static int CALLBACK LicenceProc (HWND hwnd, UINT msg,
				 WPARAM wParam, LPARAM lParam) {
    switch (msg) {
      case WM_INITDIALOG:
	return 1;
      case WM_COMMAND:
	switch (LOWORD(wParam)) {
	  case IDOK:
            EndDialog(hwnd, 1);
	    return 0;
	}
	return 0;
      case WM_CLOSE:
	EndDialog(hwnd, 1);
	return 0;
    }
    return 0;
}

/*
 * Dialog-box function for the About box.
 */
static int CALLBACK AboutProc (HWND hwnd, UINT msg,
			       WPARAM wParam, LPARAM lParam) {
    switch (msg) {
      case WM_INITDIALOG:
        SetDlgItemText (hwnd, 100, ver);
	return 1;
      case WM_COMMAND:
	switch (LOWORD(wParam)) {
	  case IDOK:
            EndDialog(hwnd, 1);
	    return 0;
	  case 101:
	    EnableWindow(hwnd, 0);
	    DialogBox (hinst, MAKEINTRESOURCE(214), NULL, LicenceProc);
	    EnableWindow(hwnd, 1);
            SetActiveWindow(hwnd);
	    return 0;
	}
	return 0;
      case WM_CLOSE:
        EndDialog(hwnd, 1);
	return 0;
    }
    return 0;
}

/*
 * Thread to generate a key.
 */
struct rsa_key_thread_params {
    HWND progressbar;                  /* notify this with progress */
    HWND dialog;                       /* notify this on completion */
    struct RSAKey *key;
    struct RSAAux *aux;
};
static DWORD WINAPI generate_rsa_key_thread(void *param) {
    struct rsa_key_thread_params *params =
        (struct rsa_key_thread_params *)param;
    struct progress prog;
    prog.progbar = params->progressbar;

    rsa_generate(params->key, params->aux, KEYSIZE, progress_update, &prog);

    PostMessage(params->dialog, WM_DONEKEY, 0, 0);

    free(params);
    return 0;
}

struct MainDlgState {
    int collecting_entropy;
    int generation_thread_exists;
    int key_exists;
    int entropy_got, entropy_required, entropy_size;
    unsigned *entropy;
    struct RSAKey key;
    struct RSAAux aux;
};

static void hidemany(HWND hwnd, const int *ids, int hideit) {
    while (*ids) {
        ShowWindow(GetDlgItem(hwnd, *ids++), (hideit ? SW_HIDE : SW_SHOW));
    }
}

static void setupbigedit(HWND hwnd, int id, struct RSAKey *key) {
    char *buffer;
    char *dec1, *dec2;

    dec1 = bignum_decimal(key->exponent);
    dec2 = bignum_decimal(key->modulus);
    buffer = malloc(strlen(dec1)+strlen(dec2)+
                    strlen(key->comment)+30);
    sprintf(buffer, "%d %s %s %s",
            ssh1_bignum_bitcount(key->modulus),
            dec1, dec2, key->comment);
    SetDlgItemText(hwnd, id, buffer);
    free(dec1);
    free(dec2);
    free(buffer);
}

/*
 * Dialog-box function for the main PuTTYgen dialog box.
 */
static int CALLBACK MainDlgProc (HWND hwnd, UINT msg,
                                 WPARAM wParam, LPARAM lParam) {
    enum {
        controlidstart = 100,
        IDC_TITLE,
        IDC_BOX_KEY, IDC_BOXT_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_BOXT_ACTIONS,
        IDC_GENSTATIC, IDC_GENERATE,
        IDC_LOADSTATIC, IDC_LOAD,
        IDC_SAVESTATIC, IDC_SAVE,
        IDC_ABOUT,
    };
    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 };
    static const char generating_msg[] =
        "Please wait while a key is generated...";
    static const char entropy_msg[] =
        "Please move the mouse in this window to generate randomness";
    struct MainDlgState *state;

    switch (msg) {
      case WM_INITDIALOG:
        state = malloc(sizeof(*state));
        state->generation_thread_exists = FALSE;
        state->key_exists = FALSE;
        SetWindowLong(hwnd, GWL_USERDATA, (LONG)state);
        {
            struct ctlpos cp, cp2;

	    /* Accelerators used: acglops */

            ctlposinit(&cp, hwnd, 10, 10, 10);
            bartitle(&cp, "Public and private key generation for PuTTY",
                    IDC_TITLE);
            beginbox(&cp, "Key",
                     IDC_BOX_KEY, IDC_BOXT_KEY);
            cp2 = cp;
            statictext(&cp2, "No key.", IDC_NOKEY);
            cp2 = cp;
            statictext(&cp2, "",
                       IDC_GENERATING);
            progressbar(&cp2, IDC_PROGRESS);
            bigeditctrl(&cp,
                        "&Public key for pasting into authorized_keys file:",
                        IDC_PKSTATIC, IDC_KEYDISPLAY, 7);
            SendDlgItemMessage(hwnd, IDC_KEYDISPLAY, EM_SETREADONLY, 1, 0);
            staticedit(&cp, "Key fingerprint:", IDC_FPSTATIC,
                       IDC_FINGERPRINT, 70);
            SendDlgItemMessage(hwnd, IDC_FINGERPRINT, EM_SETREADONLY, 1, 0);
            staticedit(&cp, "Key &comment:", IDC_COMMENTSTATIC,
                       IDC_COMMENTEDIT, 70);
            staticpassedit(&cp, "Key p&assphrase:", IDC_PASSPHRASE1STATIC,
                           IDC_PASSPHRASE1EDIT, 70);
            staticpassedit(&cp, "C&onfirm passphrase:", IDC_PASSPHRASE2STATIC,
                           IDC_PASSPHRASE2EDIT, 70);
            endbox(&cp);
            beginbox(&cp, "Actions",
                     IDC_BOX_ACTIONS, IDC_BOXT_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);
            staticbtn(&cp, "Save the generated key to a new file",
                      IDC_SAVESTATIC, "&Save", IDC_SAVE);
            endbox(&cp);
        }
        /*
         * Initially, hide the progress bar and the key display,
         * and show the no-key display. Also disable the Save
         * button, because with no key we obviously can't save
         * anything.
         */
        hidemany(hwnd, nokey_ids, FALSE);
        hidemany(hwnd, generating_ids, TRUE);
        hidemany(hwnd, gotkey_ids, TRUE);
        EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);

	return 1;
      case WM_MOUSEMOVE:
        state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
        if (state->collecting_entropy) {
            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);
                free(state->entropy);

                SetDlgItemText(hwnd, IDC_GENERATING, generating_msg);
                SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
                                   MAKELPARAM(0, PROGRESSRANGE));
                SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);

                params = malloc(sizeof(*params));
                params->progressbar = GetDlgItem(hwnd, IDC_PROGRESS);
                params->dialog = hwnd;
                params->key = &state->key;
                params->aux = &state->aux;

                if (!CreateThread(NULL, 0, generate_rsa_key_thread,
                                  params, 0, &threadid)) {
                    MessageBox(hwnd, "Out of thread resources",
                               "Key generation error",
                               MB_OK | MB_ICONERROR);
                    free(params);
                } else {
                    state->generation_thread_exists = TRUE;
                    state->collecting_entropy = FALSE;
                }
            }
        }
        break;
      case WM_COMMAND:
	switch (LOWORD(wParam)) {
	  case IDC_COMMENTEDIT:
	    if (HIWORD(wParam) == EN_CHANGE) {
                state = (struct MainDlgState *)
                    GetWindowLong(hwnd, GWL_USERDATA);
                if (state->key_exists) {
                    HWND editctl = GetDlgItem(hwnd, IDC_COMMENTEDIT);
                    int len = GetWindowTextLength(editctl);
                    if (state->key.comment)
                        free(state->key.comment);
                    state->key.comment = malloc(len+1);
                    GetWindowText(editctl, state->key.comment, len+1);
                }                
            }
	    break;
	  case IDC_ABOUT:
	    EnableWindow(hwnd, 0);
	    DialogBox (hinst, MAKEINTRESOURCE(213), NULL, AboutProc);
	    EnableWindow(hwnd, 1);
            SetActiveWindow(hwnd);
	    return 0;
          case IDC_GENERATE:
            state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
            if (!state->generation_thread_exists) {
                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);
                state->key_exists = FALSE;
                SetDlgItemText(hwnd, IDC_GENERATING, entropy_msg);
                state->collecting_entropy = TRUE;

                /*
                 * My brief statistical tests on mouse movements
                 * suggest that there are about 5 bits of
                 * randomness in the x position, 5 in the y
                 * position, and 1.7 in the message time, making
                 * 11.7 bits of unpredictability per mouse
                 * movement. However, other people have told me
                 * it's far less than that, so I'm going to be
                 * stupidly cautious and knock that down to a nice
                 * round 4.
                 */
                state->entropy_required = (KEYSIZE / 4) * 2;
                state->entropy_got = 0;
                state->entropy_size = (state->entropy_required *
                                       sizeof(*state->entropy));
                state->entropy = malloc(state->entropy_size);

                SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
                                   MAKELPARAM(0, state->entropy_required));
                SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
            }
            break;
          case IDC_SAVE:
            state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
            if (state->key_exists) {
                char filename[FILENAME_MAX];
                char passphrase[PASSPHRASE_MAXLEN];
                char passphrase2[PASSPHRASE_MAXLEN];
                GetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
                               passphrase, sizeof(passphrase));
                GetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
                               passphrase2, sizeof(passphrase2));
		if (strcmp(passphrase, passphrase2)) {
                    MessageBox(hwnd,
			       "The two passphrases given do not match.",
			       "PuTTYgen Error",
			       MB_OK | MB_ICONERROR);
		    break;
		}
                if (!*passphrase) {
                    int ret;
                    ret = MessageBox(hwnd,
                                     "Are you sure you want to save this key\n"
                                     "without a passphrase to protect it?",
                                     "PuTTYgen Warning",
                                     MB_YESNO | MB_ICONWARNING);
                    if (ret != IDYES)
                        break;
                }
                if (prompt_keyfile(hwnd, "Save private key as:",
                                   filename, 1)) {
                    /* FIXME: prompt before overwriting */
                    saversakey(filename, &state->key, &state->aux,
                               *passphrase ? passphrase : NULL);
                    /* FIXME: check return value */
                }
            }
            break;
          case IDC_LOAD:
            state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
            if (!state->generation_thread_exists) {
                char filename[FILENAME_MAX];
                if (prompt_keyfile(hwnd, "Load private key:",
                                   filename, 0)) {
                    char passphrase[PASSPHRASE_MAXLEN];
                    int needs_pass;
                    int ret;
                    char *comment;
                    struct PassphraseProcStruct pps;
                    struct RSAKey newkey;
                    struct RSAAux newaux;

                    needs_pass = rsakey_encrypted(filename, &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';
                        ret = loadrsakey(filename, &newkey, &newaux,
                                         passphrase);
                    } while (ret == -1);
                    if (comment) free(comment);
                    if (ret == 0) {
                        MessageBox(NULL, "Couldn't load private key.",
                                   "PuTTYgen Error", MB_OK | MB_ICONERROR);
                    } else if (ret == 1) {
                        state->key = newkey;
                        state->aux = newaux;

                        EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
                        EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
                        EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
                        /*
                         * Now update the key controls with all the
                         * key data.
                         */
                        {
                            char buf[128];
                            SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
                                           passphrase);
                            SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
                                           passphrase);
                            SetDlgItemText(hwnd, IDC_COMMENTEDIT,
                                           state->key.comment);
                            /*
                             * Set the key fingerprint.
                             */
                            {
                                char *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.
                             */
                            setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
                        }
                        /*
                         * Finally, hide the progress bar and show
                         * the key data.
                         */
                        hidemany(hwnd, nokey_ids, TRUE);
                        hidemany(hwnd, generating_ids, TRUE);
                        hidemany(hwnd, gotkey_ids, FALSE);
                        state->key_exists = TRUE;
                    }
                }
            }
            break;
	}
	return 0;
      case WM_DONEKEY:
        state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
        state->generation_thread_exists = FALSE;
        state->key_exists = TRUE;
        SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, PROGRESSRANGE, 0);
        EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
        EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
        EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
        /*
         * Invent a comment for the key. We'll do this by including
         * the date in it. This will be so horrifyingly ugly that
         * the user will immediately want to change it, which is
         * what we want :-)
         */
        state->key.comment = malloc(30);
        {
            time_t t;
            struct tm *tm;
            time(&t);
            tm = localtime(&t);
            strftime(state->key.comment, 30, "rsa-key-%Y%m%d", tm);
        }
            
        /*
         * Now update the key controls with all the key data.
         */
        {
            char buf[128];
            /*
             * Blank passphrase, initially. This isn't dangerous,
             * because we will warn (Are You Sure?) before allowing
             * the user to save an unprotected private key.
             */
            SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT, "");
            SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT, "");
            /*
             * Set the comment.
             */
            SetDlgItemText(hwnd, IDC_COMMENTEDIT, state->key.comment);
            /*
             * Set the key fingerprint.
             */
            {
                char *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.
             */
            setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
        }
        /*
         * Finally, hide the progress bar and show the key data.
         */
        hidemany(hwnd, nokey_ids, TRUE);
        hidemany(hwnd, generating_ids, TRUE);
        hidemany(hwnd, gotkey_ids, FALSE);
        break;
      case WM_CLOSE:
        state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
        free(state);
        EndDialog(hwnd, 1);
	return 0;
    }
    return 0;
}

int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) {
    InitCommonControls();
    hinst = inst;
    random_init();
    return DialogBox(hinst, MAKEINTRESOURCE(201), NULL, MainDlgProc) != IDOK;
}
Commit	Line	Data
6e522441	1	/*
	2	* PuTTY key generation front end.
	3	*/
	4
	5	#include <windows.h>
	6	#include <commctrl.h>
	7	#include <time.h>
	8	#ifndef NO_SECURITY
	9	#include <aclapi.h>
	10	#endif
	11	#include <stdio.h>
	12
	13	#define PUTTY_DO_GLOBALS
	14
	15	#include "putty.h"
	16	#include "ssh.h"
	17	#include "winstuff.h"
	18
	19	#define WM_DONEKEY (WM_XUSER + 1)
	20
	21	#define KEYSIZE 1024
	22
	23	/*
	24	* TODO:
6e522441	25	* - prompt before overwriting an existing file
	26	* - check the return value from saversakey()
	27	* - test the generated keys for actual working-RSA-key-hood
	28	* - variable key size
	29	*/
	30
	31	/* ----------------------------------------------------------------------
	32	* Progress report code. This is really horrible :-)
	33	*/
	34	#define PHASE1TOTAL 0x10000
	35	#define PHASE2TOTAL 0x10000
	36	#define PHASE3TOTAL 0x04000
	37	#define PHASE1START 0
	38	#define PHASE2START (PHASE1TOTAL)
	39	#define PHASE3START (PHASE1TOTAL + PHASE2TOTAL)
	40	#define TOTALTOTAL (PHASE1TOTAL + PHASE2TOTAL + PHASE3TOTAL)
	41	#define PROGRESSBIGRANGE 65535
	42	#define DIVISOR ((TOTALTOTAL + PROGRESSBIGRANGE - 1) / PROGRESSBIGRANGE)
	43	#define PROGRESSRANGE (TOTALTOTAL / DIVISOR)
	44	struct progress {
	45	unsigned phase1param, phase1current, phase1n;
	46	unsigned phase2param, phase2current, phase2n;
	47	unsigned phase3mult;
	48	HWND progbar;
	49	};
	50
	51	static void progress_update(void *param, int phase, int iprogress) {
	52	struct progress p = (struct progress )param;
	53	unsigned progress = iprogress;
	54	int position;
	55
	56	switch (phase) {
	57	case -1:
	58	p->phase1param = 0x10000 + progress;
	59	p->phase1current = 0x10000; p->phase1n = 0;
	60	return;
	61	case -2:
	62	p->phase2param = 0x10000 + progress;
	63	p->phase2current = 0x10000; p->phase2n = 0;
	64	return;
	65	case -3:
	66	p->phase3mult = PHASE3TOTAL / progress;
	67	return;
	68	case 1:
	69	while (p->phase1n < progress) {
	70	p->phase1n++;
	71	p->phase1current *= p->phase1param;
	72	p->phase1current /= 0x10000;
	73	}
	74	position = PHASE1START + 0x10000 - p->phase1current;
	75	break;
	76	case 2:
	77	while (p->phase2n < progress) {
	78	p->phase2n++;
	79	p->phase2current *= p->phase2param;
	80	p->phase2current /= 0x10000;
	81	}
	82	position = PHASE2START + 0x10000 - p->phase2current;
	83	break;
	84	case 3:
	85	position = PHASE3START + progress * p->phase3mult;
	86	break;
	87	}
	88
89	SendMessage(p->progbar, PBM_SETPOS, position / DIVISOR, 0);
90	}
91
92	extern char ver[];
93
94	#define PASSPHRASE_MAXLEN 512
95
96	struct PassphraseProcStruct {
97	char *passphrase;
98	char *comment;
99	};
100
101	/*
102	* Dialog-box function for the passphrase box.
103	*/
104	static int CALLBACK PassphraseProc(HWND hwnd, UINT msg,
105	WPARAM wParam, LPARAM lParam) {
106	static char *passphrase;
107	struct PassphraseProcStruct *p;
108
109	switch (msg) {
110	case WM_INITDIALOG:
111	SetForegroundWindow(hwnd);
112	SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0,
113	SWP_NOMOVE \| SWP_NOSIZE \| SWP_SHOWWINDOW);
114	p = (struct PassphraseProcStruct *)lParam;
115	passphrase = p->passphrase;
116	if (p->comment)
117	SetDlgItemText(hwnd, 101, p->comment);
118	*passphrase = 0;
119	return 0;
120	case WM_COMMAND:
121	switch (LOWORD(wParam)) {
122	case IDOK:
123	if (*passphrase)
124	EndDialog (hwnd, 1);
125	else
126	MessageBeep (0);
127	return 0;
128	case IDCANCEL:
129	EndDialog (hwnd, 0);
130	return 0;
131	case 102: /* edit box */
132	if (HIWORD(wParam) == EN_CHANGE) {
133	GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1);
134	passphrase[PASSPHRASE_MAXLEN-1] = '\0';
135	}
136	return 0;
137	}
138	return 0;
139	case WM_CLOSE:
140	EndDialog (hwnd, 0);
141	return 0;
142	}
143	return 0;
144	}
145
146	/*
147	* Prompt for a key file. Assumes the filename buffer is of size
148	* FILENAME_MAX.
149	*/
150	static int prompt_keyfile(HWND hwnd, char *dlgtitle,
151	char *filename, int save) {
152	OPENFILENAME of;
153	memset(&of, 0, sizeof(of));
154	#ifdef OPENFILENAME_SIZE_VERSION_400
155	of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
156	#else
157	of.lStructSize = sizeof(of);
158	#endif
159	of.hwndOwner = hwnd;
160	of.lpstrFilter = "All Files\0*\0\0\0";
161	of.lpstrCustomFilter = NULL;
162	of.nFilterIndex = 1;
163	of.lpstrFile = filename; *filename = '\0';
164	of.nMaxFile = FILENAME_MAX;
165	of.lpstrFileTitle = NULL;
166	of.lpstrInitialDir = NULL;
167	of.lpstrTitle = dlgtitle;
168	of.Flags = 0;
169	if (save)
170	return GetSaveFileName(&of);
171	else
172	return GetOpenFileName(&of);
173	}
174
175	/*
176	* This function is needed to link with the DES code. We need not
177	* have it do anything at all.
178	*/
179	void logevent(char *msg) {
180	}
181
182	/*
183	* Dialog-box function for the Licence box.
184	*/
185	static int CALLBACK LicenceProc (HWND hwnd, UINT msg,
186	WPARAM wParam, LPARAM lParam) {
187	switch (msg) {
188	case WM_INITDIALOG:
189	return 1;
190	case WM_COMMAND:
191	switch (LOWORD(wParam)) {
192	case IDOK:
193	EndDialog(hwnd, 1);
194	return 0;
195	}
196	return 0;
197	case WM_CLOSE:
198	EndDialog(hwnd, 1);
199	return 0;
200	}
201	return 0;
202	}
203
204	/*
205	* Dialog-box function for the About box.
206	*/
207	static int CALLBACK AboutProc (HWND hwnd, UINT msg,
208	WPARAM wParam, LPARAM lParam) {
209	switch (msg) {
210	case WM_INITDIALOG:
211	SetDlgItemText (hwnd, 100, ver);
212	return 1;
213	case WM_COMMAND:
214	switch (LOWORD(wParam)) {
215	case IDOK:
216	EndDialog(hwnd, 1);
217	return 0;
218	case 101:
219	EnableWindow(hwnd, 0);
220	DialogBox (hinst, MAKEINTRESOURCE(214), NULL, LicenceProc);
221	EnableWindow(hwnd, 1);
222	SetActiveWindow(hwnd);
223	return 0;
224	}
225	return 0;
226	case WM_CLOSE:
227	EndDialog(hwnd, 1);
228	return 0;
229	}
230	return 0;
231	}
232
233	/*
234	* Thread to generate a key.
235	*/
236	struct rsa_key_thread_params {
237	HWND progressbar; /* notify this with progress */
238	HWND dialog; /* notify this on completion */
239	struct RSAKey *key;
240	struct RSAAux *aux;
241	};
242	static DWORD WINAPI generate_rsa_key_thread(void *param) {
243	struct rsa_key_thread_params *params =
244	(struct rsa_key_thread_params *)param;
245	struct progress prog;
246	prog.progbar = params->progressbar;
247
248	rsa_generate(params->key, params->aux, KEYSIZE, progress_update, &prog);
249
250	PostMessage(params->dialog, WM_DONEKEY, 0, 0);
251
252	free(params);
253	return 0;
254	}
255
256	struct MainDlgState {
257	int collecting_entropy;
258	int generation_thread_exists;
259	int key_exists;
260	int entropy_got, entropy_required, entropy_size;
261	unsigned *entropy;
262	struct RSAKey key;
263	struct RSAAux aux;
264	};
265
266	static void hidemany(HWND hwnd, const int *ids, int hideit) {
267	while (*ids) {
268	ShowWindow(GetDlgItem(hwnd, *ids++), (hideit ? SW_HIDE : SW_SHOW));
269	}
270	}
271
272	static void setupbigedit(HWND hwnd, int id, struct RSAKey *key) {
273	char *buffer;
274	char dec1, dec2;
275
276	dec1 = bignum_decimal(key->exponent);
277	dec2 = bignum_decimal(key->modulus);
278	buffer = malloc(strlen(dec1)+strlen(dec2)+
279	strlen(key->comment)+30);
280	sprintf(buffer, "%d %s %s %s",
281	ssh1_bignum_bitcount(key->modulus),
282	dec1, dec2, key->comment);
283	SetDlgItemText(hwnd, id, buffer);
284	free(dec1);
285	free(dec2);
286	free(buffer);
287	}
288
289	/*
290	* Dialog-box function for the main PuTTYgen dialog box.
291	*/
292	static int CALLBACK MainDlgProc (HWND hwnd, UINT msg,
293	WPARAM wParam, LPARAM lParam) {
294	enum {
295	controlidstart = 100,
296	IDC_TITLE,
297	IDC_BOX_KEY, IDC_BOXT_KEY,
298	IDC_NOKEY,
299	IDC_GENERATING,
300	IDC_PROGRESS,
301	IDC_PKSTATIC, IDC_KEYDISPLAY,
302	IDC_FPSTATIC, IDC_FINGERPRINT,
303	IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
a5470c60	304	IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
a5470c60	305	IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT,
6e522441	306	IDC_BOX_ACTIONS, IDC_BOXT_ACTIONS,
	307	IDC_GENSTATIC, IDC_GENERATE,
	308	IDC_LOADSTATIC, IDC_LOAD,
	309	IDC_SAVESTATIC, IDC_SAVE,
	310	IDC_ABOUT,
	311	};
	312	static const int nokey_ids[] = { IDC_NOKEY, 0 };
	313	static const int generating_ids[] = { IDC_GENERATING, IDC_PROGRESS, 0 };
	314	static const int gotkey_ids[] = {
	315	IDC_PKSTATIC, IDC_KEYDISPLAY,
	316	IDC_FPSTATIC, IDC_FINGERPRINT,
	317	IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
a5470c60	318	IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
a5470c60	319	IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT, 0 };
6e522441	320	static const char generating_msg[] =
	321	"Please wait while a key is generated...";
	322	static const char entropy_msg[] =
	323	"Please move the mouse in this window to generate randomness";
	324	struct MainDlgState *state;
	325
	326	switch (msg) {
	327	case WM_INITDIALOG:
	328	state = malloc(sizeof(*state));
	329	state->generation_thread_exists = FALSE;
	330	state->key_exists = FALSE;
	331	SetWindowLong(hwnd, GWL_USERDATA, (LONG)state);
	332	{
	333	struct ctlpos cp, cp2;
	334
a5470c60	335	/* Accelerators used: acglops */
a5470c60	336
6e522441	337	ctlposinit(&cp, hwnd, 10, 10, 10);
	338	bartitle(&cp, "Public and private key generation for PuTTY",
	339	IDC_TITLE);
	340	beginbox(&cp, "Key",
	341	IDC_BOX_KEY, IDC_BOXT_KEY);
	342	cp2 = cp;
	343	statictext(&cp2, "No key.", IDC_NOKEY);
	344	cp2 = cp;
	345	statictext(&cp2, "",
	346	IDC_GENERATING);
	347	progressbar(&cp2, IDC_PROGRESS);
	348	bigeditctrl(&cp,
	349	"&Public key for pasting into authorized_keys file:",
	350	IDC_PKSTATIC, IDC_KEYDISPLAY, 7);
	351	SendDlgItemMessage(hwnd, IDC_KEYDISPLAY, EM_SETREADONLY, 1, 0);
	352	staticedit(&cp, "Key fingerprint:", IDC_FPSTATIC,
	353	IDC_FINGERPRINT, 70);
	354	SendDlgItemMessage(hwnd, IDC_FINGERPRINT, EM_SETREADONLY, 1, 0);
	355	staticedit(&cp, "Key &comment:", IDC_COMMENTSTATIC,
	356	IDC_COMMENTEDIT, 70);
a5470c60	357	staticpassedit(&cp, "Key p&assphrase:", IDC_PASSPHRASE1STATIC,
	358	IDC_PASSPHRASE1EDIT, 70);
	359	staticpassedit(&cp, "C&onfirm passphrase:", IDC_PASSPHRASE2STATIC,
	360	IDC_PASSPHRASE2EDIT, 70);
6e522441	361	endbox(&cp);
	362	beginbox(&cp, "Actions",
	363	IDC_BOX_ACTIONS, IDC_BOXT_ACTIONS);
	364	staticbtn(&cp, "Generate a public/private key pair",
	365	IDC_GENSTATIC, "&Generate", IDC_GENERATE);
	366	staticbtn(&cp, "Load an existing private key file",
	367	IDC_LOADSTATIC, "&Load", IDC_LOAD);
	368	staticbtn(&cp, "Save the generated key to a new file",
	369	IDC_SAVESTATIC, "&Save", IDC_SAVE);
	370	endbox(&cp);
	371	}
	372	/*
	373	* Initially, hide the progress bar and the key display,
	374	* and show the no-key display. Also disable the Save
	375	* button, because with no key we obviously can't save
	376	* anything.
	377	*/
	378	hidemany(hwnd, nokey_ids, FALSE);
	379	hidemany(hwnd, generating_ids, TRUE);
	380	hidemany(hwnd, gotkey_ids, TRUE);
	381	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
	382
	383	return 1;
	384	case WM_MOUSEMOVE:
	385	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	386	if (state->collecting_entropy) {
	387	state->entropy[state->entropy_got++] = lParam;
	388	state->entropy[state->entropy_got++] = GetMessageTime();
	389	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS,
	390	state->entropy_got, 0);
	391	if (state->entropy_got >= state->entropy_required) {
	392	struct rsa_key_thread_params *params;
	393	DWORD threadid;
	394
	395	/*
	396	* Seed the entropy pool
	397	*/
	398	random_add_heavynoise(state->entropy, state->entropy_size);
	399	memset(state->entropy, 0, state->entropy_size);
	400	free(state->entropy);
	401
	402	SetDlgItemText(hwnd, IDC_GENERATING, generating_msg);
	403	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
	404	MAKELPARAM(0, PROGRESSRANGE));
	405	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
	406
	407	params = malloc(sizeof(*params));
	408	params->progressbar = GetDlgItem(hwnd, IDC_PROGRESS);
	409	params->dialog = hwnd;
	410	params->key = &state->key;
	411	params->aux = &state->aux;
	412
	413	if (!CreateThread(NULL, 0, generate_rsa_key_thread,
	414	params, 0, &threadid)) {
	415	MessageBox(hwnd, "Out of thread resources",
	416	"Key generation error",
	417	MB_OK \| MB_ICONERROR);
	418	free(params);
	419	} else {
	420	state->generation_thread_exists = TRUE;
	421	state->collecting_entropy = FALSE;
	422	}
	423	}
	424	}
425	break;
426	case WM_COMMAND:
427	switch (LOWORD(wParam)) {
428	case IDC_COMMENTEDIT:
429	if (HIWORD(wParam) == EN_CHANGE) {
430	state = (struct MainDlgState *)
431	GetWindowLong(hwnd, GWL_USERDATA);
432	if (state->key_exists) {
433	HWND editctl = GetDlgItem(hwnd, IDC_COMMENTEDIT);
434	int len = GetWindowTextLength(editctl);
435	if (state->key.comment)
436	free(state->key.comment);
437	state->key.comment = malloc(len+1);
438	GetWindowText(editctl, state->key.comment, len+1);
439	}
440	}
441	break;
442	case IDC_ABOUT:
443	EnableWindow(hwnd, 0);
444	DialogBox (hinst, MAKEINTRESOURCE(213), NULL, AboutProc);
445	EnableWindow(hwnd, 1);
446	SetActiveWindow(hwnd);
447	return 0;
448	case IDC_GENERATE:
449	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
450	if (!state->generation_thread_exists) {
451	hidemany(hwnd, nokey_ids, TRUE);
452	hidemany(hwnd, generating_ids, FALSE);
453	hidemany(hwnd, gotkey_ids, TRUE);
454	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 0);
455	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 0);
456	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
457	state->key_exists = FALSE;
458	SetDlgItemText(hwnd, IDC_GENERATING, entropy_msg);
459	state->collecting_entropy = TRUE;
460
461	/*
462	* My brief statistical tests on mouse movements
463	* suggest that there are about 5 bits of
464	* randomness in the x position, 5 in the y
465	* position, and 1.7 in the message time, making
466	* 11.7 bits of unpredictability per mouse
467	* movement. However, other people have told me
468	* it's far less than that, so I'm going to be
469	* stupidly cautious and knock that down to a nice
470	* round 4.
471	*/
472	state->entropy_required = (KEYSIZE / 4) * 2;
473	state->entropy_got = 0;
474	state->entropy_size = (state->entropy_required *
475	sizeof(*state->entropy));
476	state->entropy = malloc(state->entropy_size);
477
478	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
479	MAKELPARAM(0, state->entropy_required));
480	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
481	}
482	break;
483	case IDC_SAVE:
484	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
485	if (state->key_exists) {
486	char filename[FILENAME_MAX];
487	char passphrase[PASSPHRASE_MAXLEN];
a5470c60	488	char passphrase2[PASSPHRASE_MAXLEN];
	489	GetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
	490	passphrase, sizeof(passphrase));
	491	GetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
	492	passphrase2, sizeof(passphrase2));
	493	if (strcmp(passphrase, passphrase2)) {
	494	MessageBox(hwnd,
	495	"The two passphrases given do not match.",
	496	"PuTTYgen Error",
	497	MB_OK \| MB_ICONERROR);
	498	break;
	499	}
6e522441	500	if (!*passphrase) {
	501	int ret;
	502	ret = MessageBox(hwnd,
	503	"Are you sure you want to save this key\n"
	504	"without a passphrase to protect it?",
	505	"PuTTYgen Warning",
	506	MB_YESNO \| MB_ICONWARNING);
	507	if (ret != IDYES)
	508	break;
	509	}
	510	if (prompt_keyfile(hwnd, "Save private key as:",
	511	filename, 1)) {
	512	/* FIXME: prompt before overwriting */
	513	saversakey(filename, &state->key, &state->aux,
	514	*passphrase ? passphrase : NULL);
	515	/* FIXME: check return value */
	516	}
	517	}
	518	break;
	519	case IDC_LOAD:
	520	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	521	if (!state->generation_thread_exists) {
	522	char filename[FILENAME_MAX];
	523	if (prompt_keyfile(hwnd, "Load private key:",
	524	filename, 0)) {
	525	char passphrase[PASSPHRASE_MAXLEN];
	526	int needs_pass;
	527	int ret;
	528	char *comment;
	529	struct PassphraseProcStruct pps;
	530	struct RSAKey newkey;
	531	struct RSAAux newaux;
	532
	533	needs_pass = rsakey_encrypted(filename, &comment);
	534	pps.passphrase = passphrase;
	535	pps.comment = comment;
	536	do {
	537	if (needs_pass) {
	538	int dlgret;
	539	dlgret = DialogBoxParam(hinst,
	540	MAKEINTRESOURCE(210),
	541	NULL, PassphraseProc,
	542	(LPARAM)&pps);
	543	if (!dlgret) {
	544	ret = -2;
	545	break;
	546	}
	547	} else
	548	*passphrase = '\0';
	549	ret = loadrsakey(filename, &newkey, &newaux,
	550	passphrase);
	551	} while (ret == -1);
	552	if (comment) free(comment);
	553	if (ret == 0) {
	554	MessageBox(NULL, "Couldn't load private key.",
	555	"PuTTYgen Error", MB_OK \| MB_ICONERROR);
	556	} else if (ret == 1) {
	557	state->key = newkey;
	558	state->aux = newaux;
	559
	560	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	561	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	562	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	563	/*
564	* Now update the key controls with all the
565	* key data.
566	*/
567	{
568	char buf[128];
a5470c60	569	SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
	570	passphrase);
	571	SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
6e522441	572	passphrase);
	573	SetDlgItemText(hwnd, IDC_COMMENTEDIT,
	574	state->key.comment);
	575	/*
	576	* Set the key fingerprint.
	577	*/
	578	{
	579	char *savecomment = state->key.comment;
	580	state->key.comment = NULL;
	581	rsa_fingerprint(buf, sizeof(buf), &state->key);
	582	state->key.comment = savecomment;
	583	}
	584	SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
	585	/*
	586	* Construct a decimal representation
	587	* of the key, for pasting into
	588	* .ssh/authorized_keys on a Unix box.
	589	*/
	590	setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
	591	}
	592	/*
	593	* Finally, hide the progress bar and show
	594	* the key data.
	595	*/
	596	hidemany(hwnd, nokey_ids, TRUE);
	597	hidemany(hwnd, generating_ids, TRUE);
	598	hidemany(hwnd, gotkey_ids, FALSE);
	599	state->key_exists = TRUE;
	600	}
	601	}
	602	}
	603	break;
	604	}
	605	return 0;
	606	case WM_DONEKEY:
	607	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	608	state->generation_thread_exists = FALSE;
	609	state->key_exists = TRUE;
	610	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, PROGRESSRANGE, 0);
	611	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	612	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	613	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	614	/*
	615	* Invent a comment for the key. We'll do this by including
	616	* the date in it. This will be so horrifyingly ugly that
	617	* the user will immediately want to change it, which is
	618	* what we want :-)
	619	*/
	620	state->key.comment = malloc(30);
	621	{
	622	time_t t;
	623	struct tm *tm;
	624	time(&t);
	625	tm = localtime(&t);
	626	strftime(state->key.comment, 30, "rsa-key-%Y%m%d", tm);
	627	}
	628
	629	/*
	630	* Now update the key controls with all the key data.
	631	*/
	632	{
	633	char buf[128];
	634	/*
	635	* Blank passphrase, initially. This isn't dangerous,
636	* because we will warn (Are You Sure?) before allowing
637	* the user to save an unprotected private key.
638	*/
a5470c60	639	SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT, "");
a5470c60	640	SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT, "");
6e522441	641	/*
	642	* Set the comment.
	643	*/
	644	SetDlgItemText(hwnd, IDC_COMMENTEDIT, state->key.comment);
	645	/*
	646	* Set the key fingerprint.
	647	*/
	648	{
	649	char *savecomment = state->key.comment;
	650	state->key.comment = NULL;
	651	rsa_fingerprint(buf, sizeof(buf), &state->key);
	652	state->key.comment = savecomment;
	653	}
	654	SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
	655	/*
	656	* Construct a decimal representation of the key, for
	657	* pasting into .ssh/authorized_keys on a Unix box.
	658	*/
	659	setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
	660	}
	661	/*
	662	* Finally, hide the progress bar and show the key data.
	663	*/
	664	hidemany(hwnd, nokey_ids, TRUE);
	665	hidemany(hwnd, generating_ids, TRUE);
	666	hidemany(hwnd, gotkey_ids, FALSE);
	667	break;
	668	case WM_CLOSE:
	669	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	670	free(state);
	671	EndDialog(hwnd, 1);
	672	return 0;
	673	}
	674	return 0;
	675	}
	676
	677	int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) {
8b8cf871	678	InitCommonControls();
6e522441	679	hinst = inst;
	680	random_init();
	681	return DialogBox(hinst, MAKEINTRESOURCE(201), NULL, MainDlgProc) != IDOK;
	682	}