[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:
 *  - 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)) {
		    int ret;
		    FILE *fp = fopen(filename, "r");
		    if (fp) {
			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;
		    }
                    ret = saversakey(filename, &state->key, &state->aux,
				     *passphrase ? passphrase : NULL);
		    if (ret <= 0) {
			MessageBox(hwnd, "Unable to save key file",
				   "PuTTYgen Error",
				   MB_OK | MB_ICONERROR);
		    }
                }
            }
            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	* - test the generated keys for actual working-RSA-key-hood
	26	* - variable key size
	27	*/
	28
	29	/* ----------------------------------------------------------------------
	30	* Progress report code. This is really horrible :-)
	31	*/
	32	#define PHASE1TOTAL 0x10000
	33	#define PHASE2TOTAL 0x10000
	34	#define PHASE3TOTAL 0x04000
	35	#define PHASE1START 0
	36	#define PHASE2START (PHASE1TOTAL)
	37	#define PHASE3START (PHASE1TOTAL + PHASE2TOTAL)
	38	#define TOTALTOTAL (PHASE1TOTAL + PHASE2TOTAL + PHASE3TOTAL)
	39	#define PROGRESSBIGRANGE 65535
	40	#define DIVISOR ((TOTALTOTAL + PROGRESSBIGRANGE - 1) / PROGRESSBIGRANGE)
	41	#define PROGRESSRANGE (TOTALTOTAL / DIVISOR)
	42	struct progress {
	43	unsigned phase1param, phase1current, phase1n;
	44	unsigned phase2param, phase2current, phase2n;
	45	unsigned phase3mult;
	46	HWND progbar;
	47	};
	48
	49	static void progress_update(void *param, int phase, int iprogress) {
	50	struct progress p = (struct progress )param;
	51	unsigned progress = iprogress;
	52	int position;
	53
	54	switch (phase) {
	55	case -1:
	56	p->phase1param = 0x10000 + progress;
	57	p->phase1current = 0x10000; p->phase1n = 0;
	58	return;
	59	case -2:
	60	p->phase2param = 0x10000 + progress;
	61	p->phase2current = 0x10000; p->phase2n = 0;
	62	return;
	63	case -3:
	64	p->phase3mult = PHASE3TOTAL / progress;
	65	return;
	66	case 1:
	67	while (p->phase1n < progress) {
	68	p->phase1n++;
	69	p->phase1current *= p->phase1param;
	70	p->phase1current /= 0x10000;
	71	}
	72	position = PHASE1START + 0x10000 - p->phase1current;
	73	break;
	74	case 2:
	75	while (p->phase2n < progress) {
	76	p->phase2n++;
	77	p->phase2current *= p->phase2param;
	78	p->phase2current /= 0x10000;
	79	}
	80	position = PHASE2START + 0x10000 - p->phase2current;
	81	break;
	82	case 3:
	83	position = PHASE3START + progress * p->phase3mult;
	84	break;
	85	}
	86
	87	SendMessage(p->progbar, PBM_SETPOS, position / DIVISOR, 0);
	88	}
89
90	extern char ver[];
91
92	#define PASSPHRASE_MAXLEN 512
93
94	struct PassphraseProcStruct {
95	char *passphrase;
96	char *comment;
97	};
98
99	/*
100	* Dialog-box function for the passphrase box.
101	*/
102	static int CALLBACK PassphraseProc(HWND hwnd, UINT msg,
103	WPARAM wParam, LPARAM lParam) {
104	static char *passphrase;
105	struct PassphraseProcStruct *p;
106
107	switch (msg) {
108	case WM_INITDIALOG:
109	SetForegroundWindow(hwnd);
110	SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0,
111	SWP_NOMOVE \| SWP_NOSIZE \| SWP_SHOWWINDOW);
112	p = (struct PassphraseProcStruct *)lParam;
113	passphrase = p->passphrase;
114	if (p->comment)
115	SetDlgItemText(hwnd, 101, p->comment);
116	*passphrase = 0;
117	return 0;
118	case WM_COMMAND:
119	switch (LOWORD(wParam)) {
120	case IDOK:
121	if (*passphrase)
122	EndDialog (hwnd, 1);
123	else
124	MessageBeep (0);
125	return 0;
126	case IDCANCEL:
127	EndDialog (hwnd, 0);
128	return 0;
129	case 102: /* edit box */
130	if (HIWORD(wParam) == EN_CHANGE) {
131	GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1);
132	passphrase[PASSPHRASE_MAXLEN-1] = '\0';
133	}
134	return 0;
135	}
136	return 0;
137	case WM_CLOSE:
138	EndDialog (hwnd, 0);
139	return 0;
140	}
141	return 0;
142	}
143
144	/*
145	* Prompt for a key file. Assumes the filename buffer is of size
146	* FILENAME_MAX.
147	*/
148	static int prompt_keyfile(HWND hwnd, char *dlgtitle,
149	char *filename, int save) {
150	OPENFILENAME of;
151	memset(&of, 0, sizeof(of));
152	#ifdef OPENFILENAME_SIZE_VERSION_400
153	of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
154	#else
155	of.lStructSize = sizeof(of);
156	#endif
157	of.hwndOwner = hwnd;
158	of.lpstrFilter = "All Files\0*\0\0\0";
159	of.lpstrCustomFilter = NULL;
160	of.nFilterIndex = 1;
161	of.lpstrFile = filename; *filename = '\0';
162	of.nMaxFile = FILENAME_MAX;
163	of.lpstrFileTitle = NULL;
164	of.lpstrInitialDir = NULL;
165	of.lpstrTitle = dlgtitle;
166	of.Flags = 0;
167	if (save)
168	return GetSaveFileName(&of);
169	else
170	return GetOpenFileName(&of);
171	}
172
173	/*
174	* This function is needed to link with the DES code. We need not
175	* have it do anything at all.
176	*/
177	void logevent(char *msg) {
178	}
179
180	/*
181	* Dialog-box function for the Licence box.
182	*/
183	static int CALLBACK LicenceProc (HWND hwnd, UINT msg,
184	WPARAM wParam, LPARAM lParam) {
185	switch (msg) {
186	case WM_INITDIALOG:
187	return 1;
188	case WM_COMMAND:
189	switch (LOWORD(wParam)) {
190	case IDOK:
191	EndDialog(hwnd, 1);
192	return 0;
193	}
194	return 0;
195	case WM_CLOSE:
196	EndDialog(hwnd, 1);
197	return 0;
198	}
199	return 0;
200	}
201
202	/*
203	* Dialog-box function for the About box.
204	*/
205	static int CALLBACK AboutProc (HWND hwnd, UINT msg,
206	WPARAM wParam, LPARAM lParam) {
207	switch (msg) {
208	case WM_INITDIALOG:
209	SetDlgItemText (hwnd, 100, ver);
210	return 1;
211	case WM_COMMAND:
212	switch (LOWORD(wParam)) {
213	case IDOK:
214	EndDialog(hwnd, 1);
215	return 0;
216	case 101:
217	EnableWindow(hwnd, 0);
218	DialogBox (hinst, MAKEINTRESOURCE(214), NULL, LicenceProc);
219	EnableWindow(hwnd, 1);
220	SetActiveWindow(hwnd);
221	return 0;
222	}
223	return 0;
224	case WM_CLOSE:
225	EndDialog(hwnd, 1);
226	return 0;
227	}
228	return 0;
229	}
230
231	/*
232	* Thread to generate a key.
233	*/
234	struct rsa_key_thread_params {
235	HWND progressbar; /* notify this with progress */
236	HWND dialog; /* notify this on completion */
237	struct RSAKey *key;
238	struct RSAAux *aux;
239	};
240	static DWORD WINAPI generate_rsa_key_thread(void *param) {
241	struct rsa_key_thread_params *params =
242	(struct rsa_key_thread_params *)param;
243	struct progress prog;
244	prog.progbar = params->progressbar;
245
246	rsa_generate(params->key, params->aux, KEYSIZE, progress_update, &prog);
247
248	PostMessage(params->dialog, WM_DONEKEY, 0, 0);
249
250	free(params);
251	return 0;
252	}
253
254	struct MainDlgState {
255	int collecting_entropy;
256	int generation_thread_exists;
257	int key_exists;
258	int entropy_got, entropy_required, entropy_size;
259	unsigned *entropy;
260	struct RSAKey key;
261	struct RSAAux aux;
262	};
263
264	static void hidemany(HWND hwnd, const int *ids, int hideit) {
265	while (*ids) {
266	ShowWindow(GetDlgItem(hwnd, *ids++), (hideit ? SW_HIDE : SW_SHOW));
267	}
268	}
269
270	static void setupbigedit(HWND hwnd, int id, struct RSAKey *key) {
271	char *buffer;
272	char dec1, dec2;
273
274	dec1 = bignum_decimal(key->exponent);
275	dec2 = bignum_decimal(key->modulus);
276	buffer = malloc(strlen(dec1)+strlen(dec2)+
277	strlen(key->comment)+30);
278	sprintf(buffer, "%d %s %s %s",
279	ssh1_bignum_bitcount(key->modulus),
280	dec1, dec2, key->comment);
281	SetDlgItemText(hwnd, id, buffer);
282	free(dec1);
283	free(dec2);
284	free(buffer);
285	}
286
287	/*
288	* Dialog-box function for the main PuTTYgen dialog box.
289	*/
290	static int CALLBACK MainDlgProc (HWND hwnd, UINT msg,
291	WPARAM wParam, LPARAM lParam) {
292	enum {
293	controlidstart = 100,
294	IDC_TITLE,
295	IDC_BOX_KEY, IDC_BOXT_KEY,
296	IDC_NOKEY,
297	IDC_GENERATING,
298	IDC_PROGRESS,
299	IDC_PKSTATIC, IDC_KEYDISPLAY,
300	IDC_FPSTATIC, IDC_FINGERPRINT,
301	IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
a5470c60	302	IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
a5470c60	303	IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT,
6e522441	304	IDC_BOX_ACTIONS, IDC_BOXT_ACTIONS,
	305	IDC_GENSTATIC, IDC_GENERATE,
	306	IDC_LOADSTATIC, IDC_LOAD,
	307	IDC_SAVESTATIC, IDC_SAVE,
	308	IDC_ABOUT,
	309	};
	310	static const int nokey_ids[] = { IDC_NOKEY, 0 };
	311	static const int generating_ids[] = { IDC_GENERATING, IDC_PROGRESS, 0 };
	312	static const int gotkey_ids[] = {
	313	IDC_PKSTATIC, IDC_KEYDISPLAY,
	314	IDC_FPSTATIC, IDC_FINGERPRINT,
	315	IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
a5470c60	316	IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
a5470c60	317	IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT, 0 };
6e522441	318	static const char generating_msg[] =
	319	"Please wait while a key is generated...";
	320	static const char entropy_msg[] =
	321	"Please move the mouse in this window to generate randomness";
	322	struct MainDlgState *state;
	323
	324	switch (msg) {
	325	case WM_INITDIALOG:
	326	state = malloc(sizeof(*state));
	327	state->generation_thread_exists = FALSE;
	328	state->key_exists = FALSE;
	329	SetWindowLong(hwnd, GWL_USERDATA, (LONG)state);
	330	{
	331	struct ctlpos cp, cp2;
	332
a5470c60	333	/* Accelerators used: acglops */
a5470c60	334
6e522441	335	ctlposinit(&cp, hwnd, 10, 10, 10);
	336	bartitle(&cp, "Public and private key generation for PuTTY",
	337	IDC_TITLE);
	338	beginbox(&cp, "Key",
	339	IDC_BOX_KEY, IDC_BOXT_KEY);
	340	cp2 = cp;
	341	statictext(&cp2, "No key.", IDC_NOKEY);
	342	cp2 = cp;
	343	statictext(&cp2, "",
	344	IDC_GENERATING);
	345	progressbar(&cp2, IDC_PROGRESS);
	346	bigeditctrl(&cp,
	347	"&Public key for pasting into authorized_keys file:",
	348	IDC_PKSTATIC, IDC_KEYDISPLAY, 7);
	349	SendDlgItemMessage(hwnd, IDC_KEYDISPLAY, EM_SETREADONLY, 1, 0);
	350	staticedit(&cp, "Key fingerprint:", IDC_FPSTATIC,
	351	IDC_FINGERPRINT, 70);
	352	SendDlgItemMessage(hwnd, IDC_FINGERPRINT, EM_SETREADONLY, 1, 0);
	353	staticedit(&cp, "Key &comment:", IDC_COMMENTSTATIC,
	354	IDC_COMMENTEDIT, 70);
a5470c60	355	staticpassedit(&cp, "Key p&assphrase:", IDC_PASSPHRASE1STATIC,
	356	IDC_PASSPHRASE1EDIT, 70);
	357	staticpassedit(&cp, "C&onfirm passphrase:", IDC_PASSPHRASE2STATIC,
	358	IDC_PASSPHRASE2EDIT, 70);
6e522441	359	endbox(&cp);
	360	beginbox(&cp, "Actions",
	361	IDC_BOX_ACTIONS, IDC_BOXT_ACTIONS);
	362	staticbtn(&cp, "Generate a public/private key pair",
	363	IDC_GENSTATIC, "&Generate", IDC_GENERATE);
	364	staticbtn(&cp, "Load an existing private key file",
	365	IDC_LOADSTATIC, "&Load", IDC_LOAD);
	366	staticbtn(&cp, "Save the generated key to a new file",
	367	IDC_SAVESTATIC, "&Save", IDC_SAVE);
	368	endbox(&cp);
	369	}
	370	/*
	371	* Initially, hide the progress bar and the key display,
	372	* and show the no-key display. Also disable the Save
	373	* button, because with no key we obviously can't save
	374	* anything.
	375	*/
	376	hidemany(hwnd, nokey_ids, FALSE);
	377	hidemany(hwnd, generating_ids, TRUE);
	378	hidemany(hwnd, gotkey_ids, TRUE);
	379	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
	380
	381	return 1;
	382	case WM_MOUSEMOVE:
	383	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	384	if (state->collecting_entropy) {
	385	state->entropy[state->entropy_got++] = lParam;
	386	state->entropy[state->entropy_got++] = GetMessageTime();
	387	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS,
	388	state->entropy_got, 0);
	389	if (state->entropy_got >= state->entropy_required) {
	390	struct rsa_key_thread_params *params;
	391	DWORD threadid;
	392
	393	/*
	394	* Seed the entropy pool
	395	*/
	396	random_add_heavynoise(state->entropy, state->entropy_size);
	397	memset(state->entropy, 0, state->entropy_size);
	398	free(state->entropy);
	399
	400	SetDlgItemText(hwnd, IDC_GENERATING, generating_msg);
	401	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
	402	MAKELPARAM(0, PROGRESSRANGE));
	403	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
	404
	405	params = malloc(sizeof(*params));
	406	params->progressbar = GetDlgItem(hwnd, IDC_PROGRESS);
	407	params->dialog = hwnd;
	408	params->key = &state->key;
	409	params->aux = &state->aux;
	410
	411	if (!CreateThread(NULL, 0, generate_rsa_key_thread,
	412	params, 0, &threadid)) {
	413	MessageBox(hwnd, "Out of thread resources",
	414	"Key generation error",
	415	MB_OK \| MB_ICONERROR);
	416	free(params);
	417	} else {
	418	state->generation_thread_exists = TRUE;
	419	state->collecting_entropy = FALSE;
	420	}
	421	}
	422	}
423	break;
424	case WM_COMMAND:
425	switch (LOWORD(wParam)) {
426	case IDC_COMMENTEDIT:
427	if (HIWORD(wParam) == EN_CHANGE) {
428	state = (struct MainDlgState *)
429	GetWindowLong(hwnd, GWL_USERDATA);
430	if (state->key_exists) {
431	HWND editctl = GetDlgItem(hwnd, IDC_COMMENTEDIT);
432	int len = GetWindowTextLength(editctl);
433	if (state->key.comment)
434	free(state->key.comment);
435	state->key.comment = malloc(len+1);
436	GetWindowText(editctl, state->key.comment, len+1);
437	}
438	}
439	break;
440	case IDC_ABOUT:
441	EnableWindow(hwnd, 0);
442	DialogBox (hinst, MAKEINTRESOURCE(213), NULL, AboutProc);
443	EnableWindow(hwnd, 1);
444	SetActiveWindow(hwnd);
445	return 0;
446	case IDC_GENERATE:
447	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
448	if (!state->generation_thread_exists) {
449	hidemany(hwnd, nokey_ids, TRUE);
450	hidemany(hwnd, generating_ids, FALSE);
451	hidemany(hwnd, gotkey_ids, TRUE);
452	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 0);
453	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 0);
454	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
455	state->key_exists = FALSE;
456	SetDlgItemText(hwnd, IDC_GENERATING, entropy_msg);
457	state->collecting_entropy = TRUE;
458
459	/*
460	* My brief statistical tests on mouse movements
461	* suggest that there are about 5 bits of
462	* randomness in the x position, 5 in the y
463	* position, and 1.7 in the message time, making
464	* 11.7 bits of unpredictability per mouse
465	* movement. However, other people have told me
466	* it's far less than that, so I'm going to be
467	* stupidly cautious and knock that down to a nice
468	* round 4.
469	*/
470	state->entropy_required = (KEYSIZE / 4) * 2;
471	state->entropy_got = 0;
472	state->entropy_size = (state->entropy_required *
473	sizeof(*state->entropy));
474	state->entropy = malloc(state->entropy_size);
475
476	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETRANGE, 0,
477	MAKELPARAM(0, state->entropy_required));
478	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, 0, 0);
479	}
480	break;
481	case IDC_SAVE:
482	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
483	if (state->key_exists) {
484	char filename[FILENAME_MAX];
485	char passphrase[PASSPHRASE_MAXLEN];
a5470c60	486	char passphrase2[PASSPHRASE_MAXLEN];
	487	GetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
	488	passphrase, sizeof(passphrase));
	489	GetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
	490	passphrase2, sizeof(passphrase2));
	491	if (strcmp(passphrase, passphrase2)) {
	492	MessageBox(hwnd,
	493	"The two passphrases given do not match.",
	494	"PuTTYgen Error",
	495	MB_OK \| MB_ICONERROR);
	496	break;
	497	}
6e522441	498	if (!*passphrase) {
	499	int ret;
	500	ret = MessageBox(hwnd,
	501	"Are you sure you want to save this key\n"
	502	"without a passphrase to protect it?",
	503	"PuTTYgen Warning",
	504	MB_YESNO \| MB_ICONWARNING);
	505	if (ret != IDYES)
	506	break;
	507	}
	508	if (prompt_keyfile(hwnd, "Save private key as:",
	509	filename, 1)) {
bdea0743	510	int ret;
18790478	511	FILE *fp = fopen(filename, "r");
18790478	512	if (fp) {
18790478	513	char buffer[FILENAME_MAX+80];
	514	fclose(fp);
	515	sprintf(buffer, "Overwrite existing file\n%.*s?",
	516	FILENAME_MAX, filename);
	517	ret = MessageBox(hwnd, buffer, "PuTTYgen Warning",
	518	MB_YESNO \| MB_ICONWARNING);
	519	if (ret != IDYES)
	520	break;
	521	}
bdea0743	522	ret = saversakey(filename, &state->key, &state->aux,
	523	*passphrase ? passphrase : NULL);
	524	if (ret <= 0) {
	525	MessageBox(hwnd, "Unable to save key file",
	526	"PuTTYgen Error",
	527	MB_OK \| MB_ICONERROR);
	528	}
6e522441	529	}
	530	}
	531	break;
	532	case IDC_LOAD:
	533	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	534	if (!state->generation_thread_exists) {
	535	char filename[FILENAME_MAX];
	536	if (prompt_keyfile(hwnd, "Load private key:",
	537	filename, 0)) {
	538	char passphrase[PASSPHRASE_MAXLEN];
	539	int needs_pass;
	540	int ret;
	541	char *comment;
	542	struct PassphraseProcStruct pps;
	543	struct RSAKey newkey;
	544	struct RSAAux newaux;
	545
	546	needs_pass = rsakey_encrypted(filename, &comment);
	547	pps.passphrase = passphrase;
	548	pps.comment = comment;
	549	do {
	550	if (needs_pass) {
	551	int dlgret;
	552	dlgret = DialogBoxParam(hinst,
	553	MAKEINTRESOURCE(210),
	554	NULL, PassphraseProc,
	555	(LPARAM)&pps);
	556	if (!dlgret) {
	557	ret = -2;
	558	break;
	559	}
	560	} else
	561	*passphrase = '\0';
	562	ret = loadrsakey(filename, &newkey, &newaux,
	563	passphrase);
	564	} while (ret == -1);
	565	if (comment) free(comment);
	566	if (ret == 0) {
	567	MessageBox(NULL, "Couldn't load private key.",
	568	"PuTTYgen Error", MB_OK \| MB_ICONERROR);
	569	} else if (ret == 1) {
	570	state->key = newkey;
	571	state->aux = newaux;
	572
	573	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	574	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	575	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	576	/*
	577	* Now update the key controls with all the
	578	* key data.
	579	*/
	580	{
	581	char buf[128];
a5470c60	582	SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
	583	passphrase);
	584	SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
6e522441	585	passphrase);
	586	SetDlgItemText(hwnd, IDC_COMMENTEDIT,
	587	state->key.comment);
	588	/*
	589	* Set the key fingerprint.
	590	*/
	591	{
	592	char *savecomment = state->key.comment;
	593	state->key.comment = NULL;
	594	rsa_fingerprint(buf, sizeof(buf), &state->key);
	595	state->key.comment = savecomment;
	596	}
	597	SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
	598	/*
	599	* Construct a decimal representation
	600	* of the key, for pasting into
	601	* .ssh/authorized_keys on a Unix box.
	602	*/
	603	setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
	604	}
	605	/*
	606	* Finally, hide the progress bar and show
	607	* the key data.
	608	*/
	609	hidemany(hwnd, nokey_ids, TRUE);
	610	hidemany(hwnd, generating_ids, TRUE);
	611	hidemany(hwnd, gotkey_ids, FALSE);
	612	state->key_exists = TRUE;
	613	}
	614	}
	615	}
	616	break;
	617	}
	618	return 0;
	619	case WM_DONEKEY:
	620	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	621	state->generation_thread_exists = FALSE;
	622	state->key_exists = TRUE;
	623	SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS, PROGRESSRANGE, 0);
	624	EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
	625	EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
	626	EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
	627	/*
	628	* Invent a comment for the key. We'll do this by including
	629	* the date in it. This will be so horrifyingly ugly that
	630	* the user will immediately want to change it, which is
	631	* what we want :-)
	632	*/
	633	state->key.comment = malloc(30);
	634	{
	635	time_t t;
	636	struct tm *tm;
	637	time(&t);
	638	tm = localtime(&t);
	639	strftime(state->key.comment, 30, "rsa-key-%Y%m%d", tm);
	640	}
	641
	642	/*
	643	* Now update the key controls with all the key data.
	644	*/
	645	{
	646	char buf[128];
	647	/*
	648	* Blank passphrase, initially. This isn't dangerous,
649	* because we will warn (Are You Sure?) before allowing
650	* the user to save an unprotected private key.
651	*/
a5470c60	652	SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT, "");
a5470c60	653	SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT, "");
6e522441	654	/*
	655	* Set the comment.
	656	*/
	657	SetDlgItemText(hwnd, IDC_COMMENTEDIT, state->key.comment);
	658	/*
	659	* Set the key fingerprint.
	660	*/
	661	{
	662	char *savecomment = state->key.comment;
	663	state->key.comment = NULL;
	664	rsa_fingerprint(buf, sizeof(buf), &state->key);
	665	state->key.comment = savecomment;
	666	}
	667	SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
	668	/*
	669	* Construct a decimal representation of the key, for
	670	* pasting into .ssh/authorized_keys on a Unix box.
	671	*/
	672	setupbigedit(hwnd, IDC_KEYDISPLAY, &state->key);
	673	}
	674	/*
	675	* Finally, hide the progress bar and show the key data.
	676	*/
	677	hidemany(hwnd, nokey_ids, TRUE);
	678	hidemany(hwnd, generating_ids, TRUE);
	679	hidemany(hwnd, gotkey_ids, FALSE);
	680	break;
	681	case WM_CLOSE:
	682	state = (struct MainDlgState *)GetWindowLong(hwnd, GWL_USERDATA);
	683	free(state);
	684	EndDialog(hwnd, 1);
	685	return 0;
	686	}
	687	return 0;
	688	}
	689
	690	int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) {
8b8cf871	691	InitCommonControls();
6e522441	692	hinst = inst;
	693	random_init();
	694	return DialogBox(hinst, MAKEINTRESOURCE(201), NULL, MainDlgProc) != IDOK;
	695	}