[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:
 *  - 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)) {
		    FILE *fp = fopen(filename, "r");
		    if (fp) {
			int ret;
			char buffer[FILENAME_MAX+80];
			fclose(fp);
			sprintf(buffer, "Overwrite existing file\n%.*s?",
				FILENAME_MAX, filename);
			ret = MessageBox(hwnd, buffer, "PuTTYgen Warning",
					 MB_YESNO | MB_ICONWARNING);
			if (ret != IDYES)
			    break;
		    }
                    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	* - check the return value from saversakey()
	26	* - test the generated keys for actual working-RSA-key-hood
	27	* - variable key size
	28	*/
	29
	30	/* ----------------------------------------------------------------------
	31	* Progress report code. This is really horrible :-)
	32	*/
	33	#define PHASE1TOTAL 0x10000
	34	#define PHASE2TOTAL 0x10000
	35	#define PHASE3TOTAL 0x04000
	36	#define PHASE1START 0
	37	#define PHASE2START (PHASE1TOTAL)
	38	#define PHASE3START (PHASE1TOTAL + PHASE2TOTAL)
	39	#define TOTALTOTAL (PHASE1TOTAL + PHASE2TOTAL + PHASE3TOTAL)
	40	#define PROGRESSBIGRANGE 65535
	41	#define DIVISOR ((TOTALTOTAL + PROGRESSBIGRANGE - 1) / PROGRESSBIGRANGE)
	42	#define PROGRESSRANGE (TOTALTOTAL / DIVISOR)
	43	struct progress {
	44	unsigned phase1param, phase1current, phase1n;
	45	unsigned phase2param, phase2current, phase2n;
	46	unsigned phase3mult;
	47	HWND progbar;
	48	};
	49
	50	static void progress_update(void *param, int phase, int iprogress) {
	51	struct progress p = (struct progress )param;
	52	unsigned progress = iprogress;
	53	int position;
	54
	55	switch (phase) {
	56	case -1:
	57	p->phase1param = 0x10000 + progress;
	58	p->phase1current = 0x10000; p->phase1n = 0;
	59	return;
	60	case -2:
	61	p->phase2param = 0x10000 + progress;
	62	p->phase2current = 0x10000; p->phase2n = 0;
	63	return;
	64	case -3:
	65	p->phase3mult = PHASE3TOTAL / progress;
	66	return;
	67	case 1:
	68	while (p->phase1n < progress) {
	69	p->phase1n++;
	70	p->phase1current *= p->phase1param;
	71	p->phase1current /= 0x10000;
	72	}
	73	position = PHASE1START + 0x10000 - p->phase1current;
	74	break;
	75	case 2:
	76	while (p->phase2n < progress) {
	77	p->phase2n++;
	78	p->phase2current *= p->phase2param;
	79	p->phase2current /= 0x10000;
	80	}
	81	position = PHASE2START + 0x10000 - p->phase2current;
	82	break;
	83	case 3:
	84	position = PHASE3START + progress * p->phase3mult;
	85	break;
	86	}
	87
	88	SendMessage(p->progbar, PBM_SETPOS, position / DIVISOR, 0);
89	}
90
91	extern char ver[];
92
93	#define PASSPHRASE_MAXLEN 512
94
95	struct PassphraseProcStruct {
96	char *passphrase;
97	char *comment;
98	};
99
100	/*
101	* Dialog-box function for the passphrase box.
102	*/
103	static int CALLBACK PassphraseProc(HWND hwnd, UINT msg,
104	WPARAM wParam, LPARAM lParam) {
105	static char *passphrase;
106	struct PassphraseProcStruct *p;
107
108	switch (msg) {
109	case WM_INITDIALOG:
110	SetForegroundWindow(hwnd);
111	SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0,
112	SWP_NOMOVE \| SWP_NOSIZE \| SWP_SHOWWINDOW);
113	p = (struct PassphraseProcStruct *)lParam;
114	passphrase = p->passphrase;
115	if (p->comment)
116	SetDlgItemText(hwnd, 101, p->comment);
117	*passphrase = 0;
118	return 0;
119	case WM_COMMAND:
120	switch (LOWORD(wParam)) {
121	case IDOK:
122	if (*passphrase)
123	EndDialog (hwnd, 1);
124	else
125	MessageBeep (0);
126	return 0;
127	case IDCANCEL:
128	EndDialog (hwnd, 0);
129	return 0;
130	case 102: /* edit box */
131	if (HIWORD(wParam) == EN_CHANGE) {
132	GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1);
133	passphrase[PASSPHRASE_MAXLEN-1] = '\0';
134	}
135	return 0;
136	}
137	return 0;
138	case WM_CLOSE:
139	EndDialog (hwnd, 0);
140	return 0;
141	}
142	return 0;
143	}
144
145	/*
146	* Prompt for a key file. Assumes the filename buffer is of size
147	* FILENAME_MAX.
148	*/
149	static int prompt_keyfile(HWND hwnd, char *dlgtitle,
150	char *filename, int save) {
151	OPENFILENAME of;
152	memset(&of, 0, sizeof(of));
153	#ifdef OPENFILENAME_SIZE_VERSION_400
154	of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
155	#else
156	of.lStructSize = sizeof(of);
157	#endif
158	of.hwndOwner = hwnd;
159	of.lpstrFilter = "All Files\0*\0\0\0";
160	of.lpstrCustomFilter = NULL;
161	of.nFilterIndex = 1;
162	of.lpstrFile = filename; *filename = '\0';
163	of.nMaxFile = FILENAME_MAX;
164	of.lpstrFileTitle = NULL;
165	of.lpstrInitialDir = NULL;
166	of.lpstrTitle = dlgtitle;
167	of.Flags = 0;
168	if (save)
169	return GetSaveFileName(&of);
170	else
171	return GetOpenFileName(&of);
172	}
173
174	/*
175	* This function is needed to link with the DES code. We need not
176	* have it do anything at all.
177	*/
178	void logevent(char *msg) {
179	}
180
181	/*
182	* Dialog-box function for the Licence box.
183	*/
184	static int CALLBACK LicenceProc (HWND hwnd, UINT msg,
185	WPARAM wParam, LPARAM lParam) {
186	switch (msg) {
187	case WM_INITDIALOG:
188	return 1;
189	case WM_COMMAND:
190	switch (LOWORD(wParam)) {
191	case IDOK:
192	EndDialog(hwnd, 1);
193	return 0;
194	}
195	return 0;
196	case WM_CLOSE:
197	EndDialog(hwnd, 1);
198	return 0;
199	}
200	return 0;
201	}
202
203	/*
204	* Dialog-box function for the About box.
205	*/
206	static int CALLBACK AboutProc (HWND hwnd, UINT msg,
207	WPARAM wParam, LPARAM lParam) {
208	switch (msg) {
209	case WM_INITDIALOG:
210	SetDlgItemText (hwnd, 100, ver);
211	return 1;
212	case WM_COMMAND:
213	switch (LOWORD(wParam)) {
214	case IDOK:
215	EndDialog(hwnd, 1);
216	return 0;
217	case 101:
218	EnableWindow(hwnd, 0);
219	DialogBox (hinst, MAKEINTRESOURCE(214), NULL, LicenceProc);
220	EnableWindow(hwnd, 1);
221	SetActiveWindow(hwnd);
222	return 0;
223	}
224	return 0;
225	case WM_CLOSE:
226	EndDialog(hwnd, 1);
227	return 0;
228	}
229	return 0;
230	}
231
232	/*
233	* Thread to generate a key.
234	*/
235	struct rsa_key_thread_params {
236	HWND progressbar; /* notify this with progress */
237	HWND dialog; /* notify this on completion */
238	struct RSAKey *key;
239	struct RSAAux *aux;
240	};
241	static DWORD WINAPI generate_rsa_key_thread(void *param) {
242	struct rsa_key_thread_params *params =
243	(struct rsa_key_thread_params *)param;
244	struct progress prog;
245	prog.progbar = params->progressbar;
246
247	rsa_generate(params->key, params->aux, KEYSIZE, progress_update, &prog);
248
249	PostMessage(params->dialog, WM_DONEKEY, 0, 0);
250
251	free(params);
252	return 0;
253	}
254
255	struct MainDlgState {
256	int collecting_entropy;
257	int generation_thread_exists;
258	int key_exists;
259	int entropy_got, entropy_required, entropy_size;
260	unsigned *entropy;
261	struct RSAKey key;
262	struct RSAAux aux;
263	};
264
265	static void hidemany(HWND hwnd, const int *ids, int hideit) {
266	while (*ids) {
267	ShowWindow(GetDlgItem(hwnd, *ids++), (hideit ? SW_HIDE : SW_SHOW));
268	}
269	}
270
271	static void setupbigedit(HWND hwnd, int id, struct RSAKey *key) {
272	char *buffer;
273	char dec1, dec2;
274
275	dec1 = bignum_decimal(key->exponent);
276	dec2 = bignum_decimal(key->modulus);
277	buffer = malloc(strlen(dec1)+strlen(dec2)+
278	strlen(key->comment)+30);
279	sprintf(buffer, "%d %s %s %s",
280	ssh1_bignum_bitcount(key->modulus),
281	dec1, dec2, key->comment);
282	SetDlgItemText(hwnd, id, buffer);
283	free(dec1);
284	free(dec2);
285	free(buffer);
286	}
287
288	/*
289	* Dialog-box function for the main PuTTYgen dialog box.
290	*/
291	static int CALLBACK MainDlgProc (HWND hwnd, UINT msg,
292	WPARAM wParam, LPARAM lParam) {
293	enum {
294	controlidstart = 100,
295	IDC_TITLE,
296	IDC_BOX_KEY, IDC_BOXT_KEY,
297	IDC_NOKEY,
298	IDC_GENERATING,
299	IDC_PROGRESS,
300	IDC_PKSTATIC, IDC_KEYDISPLAY,
301	IDC_FPSTATIC, IDC_FINGERPRINT,
302	IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
a5470c60	303	IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
a5470c60	304	IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT,
6e522441	305	IDC_BOX_ACTIONS, IDC_BOXT_ACTIONS,
	306	IDC_GENSTATIC, IDC_GENERATE,
	307	IDC_LOADSTATIC, IDC_LOAD,
	308	IDC_SAVESTATIC, IDC_SAVE,
	309	IDC_ABOUT,
	310	};
	311	static const int nokey_ids[] = { IDC_NOKEY, 0 };
	312	static const int generating_ids[] = { IDC_GENERATING, IDC_PROGRESS, 0 };
	313	static const int gotkey_ids[] = {
	314	IDC_PKSTATIC, IDC_KEYDISPLAY,
	315	IDC_FPSTATIC, IDC_FINGERPRINT,
	316	IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
a5470c60	317	IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
a5470c60	318	IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT, 0 };
6e522441	319	static const char generating_msg[] =
	320	"Please wait while a key is generated...";
	321	static const char entropy_msg[] =
	322	"Please move the mouse in this window to generate randomness";
	323	struct MainDlgState *state;
	324
	325	switch (msg) {
	326	case WM_INITDIALOG:
	327	state = malloc(sizeof(*state));
	328	state->generation_thread_exists = FALSE;
	329	state->key_exists = FALSE;
	330	SetWindowLong(hwnd, GWL_USERDATA, (LONG)state);
	331	{
	332	struct ctlpos cp, cp2;
	333
a5470c60	334	/* Accelerators used: acglops */
a5470c60	335
6e522441	336	ctlposinit(&cp, hwnd, 10, 10, 10);
	337	bartitle(&cp, "Public and private key generation for PuTTY",
	338	IDC_TITLE);
	339	beginbox(&cp, "Key",
	340	IDC_BOX_KEY, IDC_BOXT_KEY);
	341	cp2 = cp;
	342	statictext(&cp2, "No key.", IDC_NOKEY);
	343	cp2 = cp;
	344	statictext(&cp2, "",
	345	IDC_GENERATING);
	346	progressbar(&cp2, IDC_PROGRESS);
	347	bigeditctrl(&cp,
	348	"&Public key for pasting into authorized_keys file:",
	349	IDC_PKSTATIC, IDC_KEYDISPLAY, 7);
	350	SendDlgItemMessage(hwnd, IDC_KEYDISPLAY, EM_SETREADONLY, 1, 0);
	351	staticedit(&cp, "Key fingerprint:", IDC_FPSTATIC,
	352	IDC_FINGERPRINT, 70);
	353	SendDlgItemMessage(hwnd, IDC_FINGERPRINT, EM_SETREADONLY, 1, 0);
	354	staticedit(&cp, "Key &comment:", IDC_COMMENTSTATIC,
	355	IDC_COMMENTEDIT, 70);
a5470c60	356	staticpassedit(&cp, "Key p&assphrase:", IDC_PASSPHRASE1STATIC,
	357	IDC_PASSPHRASE1EDIT, 70);
	358	staticpassedit(&cp, "C&onfirm passphrase:", IDC_PASSPHRASE2STATIC,
	359	IDC_PASSPHRASE2EDIT, 70);
6e522441	360	endbox(&cp);
	361	beginbox(&cp, "Actions",
	362	IDC_BOX_ACTIONS, IDC_BOXT_ACTIONS);
	363	staticbtn(&cp, "Generate a public/private key pair",
	364	IDC_GENSTATIC, "&Generate", IDC_GENERATE);
	365	staticbtn(&cp, "Load an existing private key file",
	366	IDC_LOADSTATIC, "&Load", IDC_LOAD);
	367	staticbtn(&cp, "Save the generated key to a new file",
	368	IDC_SAVESTATIC, "&Save", IDC_SAVE);
	369	endbox(&cp);
	370	}
	371	/*
	372	* Initially, hide the progress bar and the key display,
	373	* and show the no-key display. Also disable the Save
	374	* button, because with no key we obviously can't save
	375	* anything.
	376	*/
	377	hidemany(hwnd, nokey_ids, FALSE);
	378	hidemany(hwnd, generating_ids, TRUE);
	379	hidemany(hwnd, gotkey_ids, TRUE);
	380	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
	381
	382	return 1;
	383	case WM_MOUSEMOVE:
	384	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	385	if (state->collecting_entropy) {
	386	state->entropy[state->entropy_got++] = lParam;
	387	state->entropy[state->entropy_got++] = GetMessageTime();
	388	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS,
	389	state->entropy_got, 0);
	390	if (state->entropy_got >= state->entropy_required) {
	391	struct rsa_key_thread_params *params;
	392	DWORD threadid;
	393
	394	/*
	395	* Seed the entropy pool
	396	*/
	397	random_add_heavynoise(state->entropy, state->entropy_size);
	398	memset(state->entropy, 0, state->entropy_size);
	399	free(state->entropy);
	400
	401	SetDlgItemText(hwnd, IDC_GENERATING, generating_msg);
	402	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
	403	MAKELPARAM(0, PROGRESSRANGE));
	404	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
	405
	406	params = malloc(sizeof(*params));
	407	params->progressbar = GetDlgItem(hwnd, IDC_PROGRESS);
	408	params->dialog = hwnd;
	409	params->key = &state->key;
	410	params->aux = &state->aux;
	411
	412	if (!CreateThread(NULL, 0, generate_rsa_key_thread,
	413	params, 0, &threadid)) {
	414	MessageBox(hwnd, "Out of thread resources",
	415	"Key generation error",
	416	MB_OK \| MB_ICONERROR);
	417	free(params);
	418	} else {
	419	state->generation_thread_exists = TRUE;
	420	state->collecting_entropy = FALSE;
	421	}
	422	}
	423	}
424	break;
425	case WM_COMMAND:
426	switch (LOWORD(wParam)) {
427	case IDC_COMMENTEDIT:
428	if (HIWORD(wParam) == EN_CHANGE) {
429	state = (struct MainDlgState *)
430	GetWindowLong(hwnd, GWL_USERDATA);
431	if (state->key_exists) {
432	HWND editctl = GetDlgItem(hwnd, IDC_COMMENTEDIT);
433	int len = GetWindowTextLength(editctl);
434	if (state->key.comment)
435	free(state->key.comment);
436	state->key.comment = malloc(len+1);
437	GetWindowText(editctl, state->key.comment, len+1);
438	}
439	}
440	break;
441	case IDC_ABOUT:
442	EnableWindow(hwnd, 0);
443	DialogBox (hinst, MAKEINTRESOURCE(213), NULL, AboutProc);
444	EnableWindow(hwnd, 1);
445	SetActiveWindow(hwnd);
446	return 0;
447	case IDC_GENERATE:
448	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
449	if (!state->generation_thread_exists) {
450	hidemany(hwnd, nokey_ids, TRUE);
451	hidemany(hwnd, generating_ids, FALSE);
452	hidemany(hwnd, gotkey_ids, TRUE);
453	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 0);
454	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 0);
455	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
456	state->key_exists = FALSE;
457	SetDlgItemText(hwnd, IDC_GENERATING, entropy_msg);
458	state->collecting_entropy = TRUE;
459
460	/*
461	* My brief statistical tests on mouse movements
462	* suggest that there are about 5 bits of
463	* randomness in the x position, 5 in the y
464	* position, and 1.7 in the message time, making
465	* 11.7 bits of unpredictability per mouse
466	* movement. However, other people have told me
467	* it's far less than that, so I'm going to be
468	* stupidly cautious and knock that down to a nice
469	* round 4.
470	*/
471	state->entropy_required = (KEYSIZE / 4) * 2;
472	state->entropy_got = 0;
473	state->entropy_size = (state->entropy_required *
474	sizeof(*state->entropy));
475	state->entropy = malloc(state->entropy_size);
476
477	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
478	MAKELPARAM(0, state->entropy_required));
479	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
480	}
481	break;
482	case IDC_SAVE:
483	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
484	if (state->key_exists) {
485	char filename[FILENAME_MAX];
486	char passphrase[PASSPHRASE_MAXLEN];
a5470c60	487	char passphrase2[PASSPHRASE_MAXLEN];
	488	GetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
	489	passphrase, sizeof(passphrase));
	490	GetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
	491	passphrase2, sizeof(passphrase2));
	492	if (strcmp(passphrase, passphrase2)) {
	493	MessageBox(hwnd,
	494	"The two passphrases given do not match.",
	495	"PuTTYgen Error",
	496	MB_OK \| MB_ICONERROR);
	497	break;
	498	}
6e522441	499	if (!*passphrase) {
	500	int ret;
	501	ret = MessageBox(hwnd,
	502	"Are you sure you want to save this key\n"
	503	"without a passphrase to protect it?",
	504	"PuTTYgen Warning",
	505	MB_YESNO \| MB_ICONWARNING);
	506	if (ret != IDYES)
	507	break;
	508	}
	509	if (prompt_keyfile(hwnd, "Save private key as:",
	510	filename, 1)) {
18790478	511	FILE *fp = fopen(filename, "r");
	512	if (fp) {
	513	int ret;
	514	char buffer[FILENAME_MAX+80];
	515	fclose(fp);
	516	sprintf(buffer, "Overwrite existing file\n%.*s?",
	517	FILENAME_MAX, filename);
	518	ret = MessageBox(hwnd, buffer, "PuTTYgen Warning",
	519	MB_YESNO \| MB_ICONWARNING);
	520	if (ret != IDYES)
	521	break;
	522	}
6e522441	523	saversakey(filename, &state->key, &state->aux,
	524	*passphrase ? passphrase : NULL);
	525	/* FIXME: check return value */
	526	}
	527	}
	528	break;
	529	case IDC_LOAD:
	530	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	531	if (!state->generation_thread_exists) {
	532	char filename[FILENAME_MAX];
	533	if (prompt_keyfile(hwnd, "Load private key:",
	534	filename, 0)) {
	535	char passphrase[PASSPHRASE_MAXLEN];
	536	int needs_pass;
	537	int ret;
	538	char *comment;
	539	struct PassphraseProcStruct pps;
	540	struct RSAKey newkey;
	541	struct RSAAux newaux;
	542
	543	needs_pass = rsakey_encrypted(filename, &comment);
	544	pps.passphrase = passphrase;
	545	pps.comment = comment;
	546	do {
	547	if (needs_pass) {
	548	int dlgret;
	549	dlgret = DialogBoxParam(hinst,
	550	MAKEINTRESOURCE(210),
	551	NULL, PassphraseProc,
	552	(LPARAM)&pps);
	553	if (!dlgret) {
	554	ret = -2;
	555	break;
	556	}
	557	} else
	558	*passphrase = '\0';
	559	ret = loadrsakey(filename, &newkey, &newaux,
	560	passphrase);
	561	} while (ret == -1);
	562	if (comment) free(comment);
	563	if (ret == 0) {
	564	MessageBox(NULL, "Couldn't load private key.",
	565	"PuTTYgen Error", MB_OK \| MB_ICONERROR);
	566	} else if (ret == 1) {
	567	state->key = newkey;
	568	state->aux = newaux;
	569
	570	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	571	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	572	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	573	/*
	574	* Now update the key controls with all the
	575	* key data.
	576	*/
	577	{
	578	char buf[128];
a5470c60	579	SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
	580	passphrase);
	581	SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
6e522441	582	passphrase);
	583	SetDlgItemText(hwnd, IDC_COMMENTEDIT,
	584	state->key.comment);
	585	/*
	586	* Set the key fingerprint.
	587	*/
	588	{
	589	char *savecomment = state->key.comment;
	590	state->key.comment = NULL;
	591	rsa_fingerprint(buf, sizeof(buf), &state->key);
	592	state->key.comment = savecomment;
	593	}
	594	SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
	595	/*
	596	* Construct a decimal representation
	597	* of the key, for pasting into
	598	* .ssh/authorized_keys on a Unix box.
	599	*/
	600	setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
	601	}
	602	/*
	603	* Finally, hide the progress bar and show
	604	* the key data.
	605	*/
	606	hidemany(hwnd, nokey_ids, TRUE);
	607	hidemany(hwnd, generating_ids, TRUE);
	608	hidemany(hwnd, gotkey_ids, FALSE);
	609	state->key_exists = TRUE;
	610	}
	611	}
	612	}
	613	break;
	614	}
	615	return 0;
	616	case WM_DONEKEY:
	617	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	618	state->generation_thread_exists = FALSE;
	619	state->key_exists = TRUE;
	620	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, PROGRESSRANGE, 0);
	621	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	622	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	623	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	624	/*
	625	* Invent a comment for the key. We'll do this by including
	626	* the date in it. This will be so horrifyingly ugly that
	627	* the user will immediately want to change it, which is
	628	* what we want :-)
	629	*/
	630	state->key.comment = malloc(30);
	631	{
	632	time_t t;
	633	struct tm *tm;
	634	time(&t);
	635	tm = localtime(&t);
	636	strftime(state->key.comment, 30, "rsa-key-%Y%m%d", tm);
	637	}
	638
	639	/*
	640	* Now update the key controls with all the key data.
	641	*/
	642	{
	643	char buf[128];
	644	/*
	645	* Blank passphrase, initially. This isn't dangerous,
646	* because we will warn (Are You Sure?) before allowing
647	* the user to save an unprotected private key.
648	*/
a5470c60	649	SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT, "");
a5470c60	650	SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT, "");
6e522441	651	/*
	652	* Set the comment.
	653	*/
	654	SetDlgItemText(hwnd, IDC_COMMENTEDIT, state->key.comment);
	655	/*
	656	* Set the key fingerprint.
	657	*/
	658	{
	659	char *savecomment = state->key.comment;
	660	state->key.comment = NULL;
	661	rsa_fingerprint(buf, sizeof(buf), &state->key);
	662	state->key.comment = savecomment;
	663	}
	664	SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
	665	/*
	666	* Construct a decimal representation of the key, for
	667	* pasting into .ssh/authorized_keys on a Unix box.
	668	*/
	669	setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
	670	}
	671	/*
	672	* Finally, hide the progress bar and show the key data.
	673	*/
	674	hidemany(hwnd, nokey_ids, TRUE);
	675	hidemany(hwnd, generating_ids, TRUE);
	676	hidemany(hwnd, gotkey_ids, FALSE);
	677	break;
	678	case WM_CLOSE:
	679	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	680	free(state);
	681	EndDialog(hwnd, 1);
	682	return 0;
	683	}
	684	return 0;
	685	}
	686
	687	int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) {
8b8cf871	688	InitCommonControls();
6e522441	689	hinst = inst;
	690	random_init();
	691	return DialogBox(hinst, MAKEINTRESOURCE(201), NULL, MainDlgProc) != IDOK;
	692	}