/*
* PuTTY key generation front end.
*/
#include <windows.h>
#include <commctrl.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#define PUTTY_DO_GLOBALS
#include "putty.h"
#include "ssh.h"
#include "winstuff.h"
#define WM_DONEKEY (WM_XUSER + 1)
#define DEFAULT_KEYSIZE 1024
/* ----------------------------------------------------------------------
* Progress report code. This is really horrible :-)
*/
#define PROGRESSRANGE 65535
#define MAXPHASE 5
struct progress {
int nphases;
struct {
int exponential;
unsigned startpoint, total;
unsigned param, current, n; /* if exponential */
unsigned mult; /* if linear */
} phases[MAXPHASE];
unsigned total, divisor, range;
HWND progbar;
};
static void progress_update(void *param, int action, int phase, int iprogress)
{
struct progress *p = (struct progress *) param;
unsigned progress = iprogress;
int position;
if (action < PROGFN_READY && p->nphases < phase)
p->nphases = phase;
switch (action) {
case PROGFN_LIN_PHASE:
p->phases[phase-1].exponential = 0;
p->phases[phase-1].mult = p->phases[phase].total / progress;
break;
case PROGFN_EXP_PHASE:
p->phases[phase-1].exponential = 1;
p->phases[phase-1].param = 0x10000 + progress;
p->phases[phase-1].current = p->phases[phase-1].total;
p->phases[phase-1].n = 0;
break;
case PROGFN_PHASE_EXTENT:
p->phases[phase-1].total = progress;
break;
case PROGFN_READY:
{
unsigned total = 0;
int i;
for (i = 0; i < p->nphases; i++) {
p->phases[i].startpoint = total;
total += p->phases[i].total;
}
p->total = total;
p->divisor = ((p->total + PROGRESSRANGE - 1) / PROGRESSRANGE);
p->range = p->total / p->divisor;
SendMessage(p->progbar, PBM_SETRANGE, 0, MAKELPARAM(0, p->range));
}
break;
case PROGFN_PROGRESS:
if (p->phases[phase-1].exponential) {
while (p->phases[phase-1].n < progress) {
p->phases[phase-1].n++;
p->phases[phase-1].current *= p->phases[phase-1].param;
p->phases[phase-1].current /= 0x10000;
}
position = (p->phases[phase-1].startpoint +
p->phases[phase-1].total - p->phases[phase-1].current);
} else {
position = (p->phases[phase-1].startpoint +
progress * p->phases[phase-1].mult);
}
SendMessage(p->progbar, PBM_SETPOS, position / p->divisor, 0);
break;
}
}
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 = NULL;
struct PassphraseProcStruct *p;
switch (msg) {
case WM_INITDIALOG:
SetForegroundWindow(hwnd);
SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
/*
* Centre the window.
*/
{ /* centre the window */
RECT rs, rd;
HWND hw;
hw = GetDesktopWindow();
if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd))
MoveWindow(hwnd,
(rs.right + rs.left + rd.left - rd.right) / 2,
(rs.bottom + rs.top + rd.top - rd.bottom) / 2,
rd.right - rd.left, rd.bottom - rd.top, TRUE);
}
p = (struct PassphraseProcStruct *) lParam;
passphrase = p->passphrase;
if (p->comment)
SetDlgItemText(hwnd, 101, p->comment);
*passphrase = 0;
SetDlgItemText(hwnd, 102, passphrase);
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) && passphrase) {
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:
/*
* Centre the window.
*/
{ /* centre the window */
RECT rs, rd;
HWND hw;
hw = GetDesktopWindow();
if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd))
MoveWindow(hwnd,
(rs.right + rs.left + rd.left - rd.right) / 2,
(rs.bottom + rs.top + rd.top - rd.bottom) / 2,
rd.right - rd.left, rd.bottom - rd.top, TRUE);
}
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:
/*
* Centre the window.
*/
{ /* centre the window */
RECT rs, rd;
HWND hw;
hw = GetDesktopWindow();
if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd))
MoveWindow(hwnd,
(rs.right + rs.left + rd.left - rd.right) / 2,
(rs.bottom + rs.top + rd.top - rd.bottom) / 2,
rd.right - rd.left, rd.bottom - rd.top, TRUE);
}
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 */
int keysize; /* bits in key */
int is_dsa;
struct RSAKey *key;
struct dss_key *dsskey;
};
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;
if (params->is_dsa)
dsa_generate(params->dsskey, params->keysize, progress_update, &prog);
else
rsa_generate(params->key, params->keysize, progress_update, &prog);
PostMessage(params->dialog, WM_DONEKEY, 0, 0);
sfree(params);
return 0;
}
struct MainDlgState {
int collecting_entropy;
int generation_thread_exists;
int key_exists;
int entropy_got, entropy_required, entropy_size;
int keysize;
int ssh2, is_dsa;
char **commentptr; /* points to key.comment or ssh2key.comment */
struct ssh2_userkey ssh2key;
unsigned *entropy;
struct RSAKey key;
struct dss_key dsskey;
};
static void hidemany(HWND hwnd, const int *ids, int hideit)
{
while (*ids) {
ShowWindow(GetDlgItem(hwnd, *ids++), (hideit ? SW_HIDE : SW_SHOW));
}
}
static void setupbigedit1(HWND hwnd, int id, int idstatic, struct RSAKey *key)
{
char *buffer;
char *dec1, *dec2;
dec1 = bignum_decimal(key->exponent);
dec2 = bignum_decimal(key->modulus);
buffer = smalloc(strlen(dec1) + strlen(dec2) +
strlen(key->comment) + 30);
sprintf(buffer, "%d %s %s %s",
bignum_bitcount(key->modulus), dec1, dec2, key->comment);
SetDlgItemText(hwnd, id, buffer);
SetDlgItemText(hwnd, idstatic,
"&Public key for pasting into authorized_keys file:");
sfree(dec1);
sfree(dec2);
sfree(buffer);
}
static void setupbigedit2(HWND hwnd, int id, int idstatic,
struct ssh2_userkey *key)
{
unsigned char *pub_blob;
char *buffer, *p;
int pub_len;
int i;
pub_blob = key->alg->public_blob(key->data, &pub_len);
buffer = smalloc(strlen(key->alg->name) + 4 * ((pub_len + 2) / 3) +
strlen(key->comment) + 3);
strcpy(buffer, key->alg->name);
p = buffer + strlen(buffer);
*p++ = ' ';
i = 0;
while (i < pub_len) {
int n = (pub_len - i < 3 ? pub_len - i : 3);
base64_encode_atom(pub_blob + i, n, p);
i += n;
p += 4;
}
*p++ = ' ';
strcpy(p, key->comment);
SetDlgItemText(hwnd, id, buffer);
SetDlgItemText(hwnd, idstatic, "&Public key for pasting into "
"OpenSSH authorized_keys2 file:");
sfree(pub_blob);
sfree(buffer);
}
static int save_ssh1_pubkey(char *filename, struct RSAKey *key)
{
char *dec1, *dec2;
FILE *fp;
dec1 = bignum_decimal(key->exponent);
dec2 = bignum_decimal(key->modulus);
fp = fopen(filename, "wb");
if (!fp)
return 0;
fprintf(fp, "%d %s %s %s\n",
bignum_bitcount(key->modulus), dec1, dec2, key->comment);
fclose(fp);
sfree(dec1);
sfree(dec2);
return 1;
}
static int save_ssh2_pubkey(char *filename, struct ssh2_userkey *key)
{
unsigned char *pub_blob;
char *p;
int pub_len;
int i, column;
FILE *fp;
pub_blob = key->alg->public_blob(key->data, &pub_len);
fp = fopen(filename, "wb");
if (!fp)
return 0;
fprintf(fp, "---- BEGIN SSH2 PUBLIC KEY ----\n");
fprintf(fp, "Comment: \"");
for (p = key->comment; *p; p++) {
if (*p == '\\' || *p == '\"')
fputc('\\', fp);
fputc(*p, fp);
}
fprintf(fp, "\"\n");
i = 0;
column = 0;
while (i < pub_len) {
char buf[5];
int n = (pub_len - i < 3 ? pub_len - i : 3);
base64_encode_atom(pub_blob + i, n, buf);
i += n;
buf[4] = '\0';
fputs(buf, fp);
if (++column >= 16) {
fputc('\n', fp);
column = 0;
}
}
if (column > 0)
fputc('\n', fp);
fprintf(fp, "---- END SSH2 PUBLIC KEY ----\n");
fclose(fp);
sfree(pub_blob);
return 1;
}
/*
* 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_NOKEY,
IDC_GENERATING,
IDC_PROGRESS,
IDC_PKSTATIC, IDC_KEYDISPLAY,
IDC_FPSTATIC, IDC_FINGERPRINT,
IDC_COMMENTSTATIC, IDC_COMMENTEDIT,
IDC_PASSPHRASE1STATIC, IDC_PASSPHRASE1EDIT,
IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT,
IDC_BOX_ACTIONS,
IDC_GENSTATIC, IDC_GENERATE,
IDC_LOADSTATIC, IDC_LOAD,
IDC_SAVESTATIC, IDC_SAVE, IDC_SAVEPUB,
IDC_BOX_PARAMS,
IDC_TYPESTATIC, IDC_KEYSSH1, IDC_KEYSSH2RSA, IDC_KEYSSH2DSA,
IDC_BITSSTATIC, IDC_BITS,
IDC_ABOUT,
};
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 generate some randomness by moving the mouse over the blank area.";
struct MainDlgState *state;
switch (msg) {
case WM_INITDIALOG:
/*
* Centre the window.
*/
{ /* centre the window */
RECT rs, rd;
HWND hw;
hw = GetDesktopWindow();
if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd))
MoveWindow(hwnd,
(rs.right + rs.left + rd.left - rd.right) / 2,
(rs.bottom + rs.top + rd.top - rd.bottom) / 2,
rd.right - rd.left, rd.bottom - rd.top, TRUE);
}
state = smalloc(sizeof(*state));
state->generation_thread_exists = FALSE;
state->collecting_entropy = FALSE;
state->entropy = NULL;
state->key_exists = FALSE;
SetWindowLong(hwnd, GWL_USERDATA, (LONG) state);
{
struct ctlpos cp, cp2;
/* Accelerators used: acglops1rbd */
ctlposinit(&cp, hwnd, 10, 10, 10);
bartitle(&cp, "Public and private key generation for PuTTY",
IDC_TITLE);
beginbox(&cp, "Key", IDC_BOX_KEY);
cp2 = cp;
statictext(&cp2, "No key.", 1, IDC_NOKEY);
cp2 = cp;
statictext(&cp2, "", 1, IDC_GENERATING);
progressbar(&cp2, IDC_PROGRESS);
bigeditctrl(&cp,
"&Public key for pasting into authorized_keys file:",
IDC_PKSTATIC, IDC_KEYDISPLAY, 7);
SendDlgItemMessage(hwnd, IDC_KEYDISPLAY, EM_SETREADONLY, 1, 0);
staticedit(&cp, "Key fingerprint:", IDC_FPSTATIC,
IDC_FINGERPRINT, 75);
SendDlgItemMessage(hwnd, IDC_FINGERPRINT, EM_SETREADONLY, 1,
0);
staticedit(&cp, "Key &comment:", IDC_COMMENTSTATIC,
IDC_COMMENTEDIT, 75);
staticpassedit(&cp, "Key p&assphrase:", IDC_PASSPHRASE1STATIC,
IDC_PASSPHRASE1EDIT, 75);
staticpassedit(&cp, "C&onfirm passphrase:",
IDC_PASSPHRASE2STATIC, IDC_PASSPHRASE2EDIT, 75);
endbox(&cp);
beginbox(&cp, "Actions", IDC_BOX_ACTIONS);
staticbtn(&cp, "Generate a public/private key pair",
IDC_GENSTATIC, "&Generate", IDC_GENERATE);
staticbtn(&cp, "Load an existing private key file",
IDC_LOADSTATIC, "&Load", IDC_LOAD);
static2btn(&cp, "Save the generated key", IDC_SAVESTATIC,
"Save p&ublic key", IDC_SAVEPUB,
"&Save private key", IDC_SAVE);
endbox(&cp);
beginbox(&cp, "Parameters", IDC_BOX_PARAMS);
radioline(&cp, "Type of key to generate:", IDC_TYPESTATIC, 3,
"SSH&1 (RSA)", IDC_KEYSSH1,
"SSH2 &RSA", IDC_KEYSSH2RSA,
"SSH2 &DSA", IDC_KEYSSH2DSA, NULL);
staticedit(&cp, "Number of &bits in a generated key:",
IDC_BITSSTATIC, IDC_BITS, 20);
endbox(&cp);
}
CheckRadioButton(hwnd, IDC_KEYSSH1, IDC_KEYSSH2RSA, IDC_KEYSSH1);
SetDlgItemInt(hwnd, IDC_BITS, DEFAULT_KEYSIZE, FALSE);
/*
* Initially, hide the progress bar and the key display,
* and show the no-key display. Also disable the Save
* buttons, because with no key we obviously can't save
* anything.
*/
hidemany(hwnd, nokey_ids, FALSE);
hidemany(hwnd, generating_ids, TRUE);
hidemany(hwnd, gotkey_ids, TRUE);
EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 0);
return 1;
case WM_MOUSEMOVE:
state = (struct MainDlgState *) GetWindowLong(hwnd, GWL_USERDATA);
if (state->collecting_entropy &&
state->entropy && state->entropy_got < state->entropy_required) {
state->entropy[state->entropy_got++] = lParam;
state->entropy[state->entropy_got++] = GetMessageTime();
SendDlgItemMessage(hwnd, IDC_PROGRESS, PBM_SETPOS,
state->entropy_got, 0);
if (state->entropy_got >= state->entropy_required) {
struct rsa_key_thread_params *params;
DWORD threadid;
/*
* Seed the entropy pool
*/
random_add_heavynoise(state->entropy, state->entropy_size);
memset(state->entropy, 0, state->entropy_size);
sfree(state->entropy);
state->collecting_entropy = FALSE;
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 = smalloc(sizeof(*params));
params->progressbar = GetDlgItem(hwnd, IDC_PROGRESS);
params->dialog = hwnd;
params->keysize = state->keysize;
params->is_dsa = state->is_dsa;
params->key = &state->key;
params->dsskey = &state->dsskey;
if (!CreateThread(NULL, 0, generate_rsa_key_thread,
params, 0, &threadid)) {
MessageBox(hwnd, "Out of thread resources",
"Key generation error",
MB_OK | MB_ICONERROR);
sfree(params);
} else {
state->generation_thread_exists = TRUE;
}
}
}
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->commentptr)
sfree(*state->commentptr);
*state->commentptr = smalloc(len + 1);
GetWindowText(editctl, *state->commentptr, len + 1);
if (state->ssh2) {
setupbigedit2(hwnd, IDC_KEYDISPLAY, IDC_PKSTATIC,
&state->ssh2key);
} else {
setupbigedit1(hwnd, IDC_KEYDISPLAY, IDC_PKSTATIC,
&state->key);
}
}
}
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) {
BOOL ok;
state->keysize = GetDlgItemInt(hwnd, IDC_BITS, &ok, FALSE);
if (!ok)
state->keysize = DEFAULT_KEYSIZE;
/* If we ever introduce a new key type, check it here! */
state->ssh2 = !IsDlgButtonChecked(hwnd, IDC_KEYSSH1);
state->is_dsa = IsDlgButtonChecked(hwnd, IDC_KEYSSH2DSA);
if (state->keysize < 256) {
int ret = MessageBox(hwnd,
"PuTTYgen will not generate a key"
" smaller than 256 bits.\n"
"Key length reset to 256. Continue?",
"PuTTYgen Warning",
MB_ICONWARNING | MB_OKCANCEL);
if (ret != IDOK)
break;
state->keysize = 256;
SetDlgItemInt(hwnd, IDC_BITS, 256, FALSE);
}
hidemany(hwnd, nokey_ids, TRUE);
hidemany(hwnd, generating_ids, FALSE);
hidemany(hwnd, gotkey_ids, TRUE);
EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 0);
EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 0);
EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 0);
EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 0);
EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH1), 0);
EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2RSA), 0);
EnableWindow(GetDlgItem(hwnd, IDC_BITS), 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 2.5 bits of
* randomness in the x position, 2.5 in the y
* position, and 1.7 in the message time, making
* 5.7 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 2. With this
* method, we require two words per mouse movement,
* so with 2 bits per mouse movement we expect 2
* bits every 2 words.
*/
state->entropy_required = (state->keysize / 2) * 2;
state->entropy_got = 0;
state->entropy_size = (state->entropy_required *
sizeof(*state->entropy));
state->entropy = smalloc(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;
}
if (state->ssh2) {
ret = ssh2_save_userkey(filename, &state->ssh2key,
*passphrase ? passphrase :
NULL);
} else {
ret = saversakey(filename, &state->key,
*passphrase ? passphrase : NULL);
}
if (ret <= 0) {
MessageBox(hwnd, "Unable to save key file",
"PuTTYgen Error", MB_OK | MB_ICONERROR);
}
}
}
break;
case IDC_SAVEPUB:
state =
(struct MainDlgState *) GetWindowLong(hwnd, GWL_USERDATA);
if (state->key_exists) {
char filename[FILENAME_MAX];
if (prompt_keyfile(hwnd, "Save public 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;
}
if (state->ssh2) {
ret = save_ssh2_pubkey(filename, &state->ssh2key);
} else {
ret = save_ssh1_pubkey(filename, &state->key);
}
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 ver;
int ret;
char *comment;
struct PassphraseProcStruct pps;
struct RSAKey newkey1;
struct ssh2_userkey *newkey2 = NULL;
ver = keyfile_version(filename);
if (ver == 0) {
MessageBox(NULL, "Couldn't load private key.",
"PuTTYgen Error", MB_OK | MB_ICONERROR);
break;
}
comment = NULL;
if (ver == 1)
needs_pass = rsakey_encrypted(filename, &comment);
else
needs_pass =
ssh2_userkey_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';
if (ver == 1)
ret =
loadrsakey(filename, &newkey1, passphrase);
else {
newkey2 =
ssh2_load_userkey(filename, passphrase);
if (newkey2 == SSH2_WRONG_PASSPHRASE)
ret = -1;
else if (!newkey2)
ret = 0;
else
ret = 1;
}
} while (ret == -1);
if (comment)
sfree(comment);
if (ret == 0) {
MessageBox(NULL, "Couldn't load private key.",
"PuTTYgen Error", MB_OK | MB_ICONERROR);
} else if (ret == 1) {
EnableWindow(GetDlgItem(hwnd, IDC_GENERATE), 1);
EnableWindow(GetDlgItem(hwnd, IDC_LOAD), 1);
EnableWindow(GetDlgItem(hwnd, IDC_SAVE), 1);
EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 1);
EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH1), 1);
EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2RSA), 1);
EnableWindow(GetDlgItem(hwnd, IDC_BITS), 1);
/*
* Now update the key controls with all the
* key data.
*/
{
SetDlgItemText(hwnd, IDC_PASSPHRASE1EDIT,
passphrase);
SetDlgItemText(hwnd, IDC_PASSPHRASE2EDIT,
passphrase);
if (ver == 1) {
char buf[128];
char *savecomment;
state->ssh2 = FALSE;
state->commentptr = &state->key.comment;
state->key = newkey1;
/*
* Set the key fingerprint.
*/
savecomment = state->key.comment;
state->key.comment = NULL;
rsa_fingerprint(buf, sizeof(buf),
&state->key);
state->key.comment = savecomment;
SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
/*
* Construct a decimal representation
* of the key, for pasting into
* .ssh/authorized_keys on a Unix box.
*/
setupbigedit1(hwnd, IDC_KEYDISPLAY,
IDC_PKSTATIC, &state->key);
} else {
char *fp;
char *savecomment;
state->ssh2 = TRUE;
state->commentptr =
&state->ssh2key.comment;
state->ssh2key = *newkey2; /* structure copy */
sfree(newkey2);
savecomment = state->ssh2key.comment;
state->ssh2key.comment = NULL;
fp =
state->ssh2key.alg->
fingerprint(state->ssh2key.data);
state->ssh2key.comment = savecomment;
SetDlgItemText(hwnd, IDC_FINGERPRINT, fp);
sfree(fp);
setupbigedit2(hwnd, IDC_KEYDISPLAY,
IDC_PKSTATIC, &state->ssh2key);
}
SetDlgItemText(hwnd, IDC_COMMENTEDIT,
*state->commentptr);
}
/*
* Finally, hide the progress bar and show
* the key data.
*/
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_SETRANGE, 0,
MAKELPARAM(0, PROGRESSRANGE));
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);
EnableWindow(GetDlgItem(hwnd, IDC_SAVEPUB), 1);
EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH1), 1);
EnableWindow(GetDlgItem(hwnd, IDC_KEYSSH2RSA), 1);
EnableWindow(GetDlgItem(hwnd, IDC_BITS), 1);
if (state->ssh2) {
if (state->is_dsa) {
state->ssh2key.data = &state->dsskey;
state->ssh2key.alg = &ssh_dss;
} else {
state->ssh2key.data = &state->key;
state->ssh2key.alg = &ssh_rsa;
}
state->commentptr = &state->ssh2key.comment;
} else {
state->commentptr = &state->key.comment;
}
/*
* 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->commentptr = smalloc(30);
{
time_t t;
struct tm *tm;
time(&t);
tm = localtime(&t);
if (state->is_dsa)
strftime(*state->commentptr, 30, "dsa-key-%Y%m%d", tm);
else
strftime(*state->commentptr, 30, "rsa-key-%Y%m%d", tm);
}
/*
* Now update the key controls with all the key data.
*/
{
char *savecomment;
/*
* 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->commentptr);
/*
* Set the key fingerprint.
*/
savecomment = *state->commentptr;
*state->commentptr = NULL;
if (state->ssh2) {
char *fp;
fp = state->ssh2key.alg->fingerprint(state->ssh2key.data);
SetDlgItemText(hwnd, IDC_FINGERPRINT, fp);
sfree(fp);
} else {
char buf[128];
rsa_fingerprint(buf, sizeof(buf), &state->key);
SetDlgItemText(hwnd, IDC_FINGERPRINT, buf);
}
*state->commentptr = savecomment;
/*
* Construct a decimal representation of the key, for
* pasting into .ssh/authorized_keys or
* .ssh/authorized_keys2 on a Unix box.
*/
if (state->ssh2) {
setupbigedit2(hwnd, IDC_KEYDISPLAY,
IDC_PKSTATIC, &state->ssh2key);
} else {
setupbigedit1(hwnd, IDC_KEYDISPLAY,
IDC_PKSTATIC, &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);
sfree(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;
}