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#include "gpgme.h" |
#include "gpgme.h" |
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#include "GPGOE.h" |
#include "GPGOE.h" |
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/* Structure for the passphrase cache. */ |
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struct pass_cache_s { |
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struct pass_cache_s *next; |
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char *keyid; |
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char *pass; |
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}; |
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typedef struct pass_cache_s *pass_cache_t; |
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/* Structure for the passphrase callback. */ |
/* Structure for the passphrase callback. */ |
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struct pass_cb_s { |
struct pass_cb_s { |
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const char *uid_hint; |
const char *uid_hint; |
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const char *passphrase_info; |
const char *passphrase_info; |
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char keyid[8+2]; |
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char *pass; |
char *pass; |
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HWND main_hwnd; |
pass_cache_t cache; |
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HWND main_wnd; |
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int cancel; |
int cancel; |
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int prev_was_bad; |
int prev_was_bad; |
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}; |
}; |
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/* Global passphrase cache. */ |
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static pass_cache_t the_cache = NULL; |
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/* Release the passphrase cache @ctx and invalidate all passphrases. */ |
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static void |
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invalidate_cache (pass_cache_t ctx) |
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{ |
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pass_cache_t c; |
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while (ctx) { |
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c = ctx->next; |
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free_if_alloc (ctx->keyid); |
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wipememory (ctx->pass, strlen (ctx->pass)); |
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free_if_alloc (ctx->pass); |
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ctx = c; |
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} |
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} |
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/* Put the passphrase @pass into the passphrase cache @ctx. */ |
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static void |
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passphrase_put (pass_cache_t *ctx, const char *keyid, const char *pass) |
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{ |
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pass_cache_t c, n; |
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/* check if the item is already present. */ |
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for (n = *ctx; n; n = n->next) { |
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if (!strcmp (n->keyid, keyid)) |
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return; |
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} |
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c = xcalloc (1, sizeof *c); |
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c->keyid = xstrdup (keyid); |
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c->pass = xstrdup (pass); |
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if (!*ctx) |
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*ctx = c; |
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else { |
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for (n = *ctx; n->next; n = n->next) |
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; |
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n->next = c; |
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} |
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} |
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/* Return the passphrase for the key with the keyid @keyid |
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or NULL if the passphrase was not cached for this key. */ |
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static const char* |
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passphrase_get (pass_cache_t ctx, const char *keyid) |
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{ |
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pass_cache_t c; |
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for (c = ctx; c; c = c->next) { |
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if (!strcmp (c->keyid, keyid)) |
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return c->pass; |
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} |
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return NULL; |
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} |
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/* Extract public key algorithm from passwd info. */ |
/* Extract public key algorithm from passwd info. */ |
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const char* |
const char* |
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get_pubkey_algo (const char *passphrase_info) |
get_pubkey_algo (const char *passphrase_info) |
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/* AA6F7AB7DD3B4A21 E71D9BC8C93A8529 1 0 */ |
/* AA6F7AB7DD3B4A21 E71D9BC8C93A8529 1 0 */ |
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assert (strlen (passphrase_info) > pos); |
assert (strlen (passphrase_info) > pos); |
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switch (atol (passphrase_info+pos)) { |
switch (atol (passphrase_info+pos)) { |
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case 1: return "RSA"; |
case 1: return "RSA"; |
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case 17: return "DSA"; |
case 17: return "DSA"; |
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case 16: return "ELG"; |
case 16: return "ELG"; |
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} |
} |
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pass_cb_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
pass_cb_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam) |
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{ |
{ |
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static pass_cb_t ctx; |
static pass_cb_t ctx; |
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char *info, keyid[8+2] = {0}; |
char *info; |
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int n; |
int n; |
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switch (msg) { |
switch (msg) { |
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assert (ctx); |
assert (ctx); |
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if (ctx->uid_hint && ctx->passphrase_info) { |
if (ctx->uid_hint && ctx->passphrase_info) { |
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char *utf8_uid = utf8_to_native (ctx->uid_hint+17); |
char *utf8_uid = utf8_to_native (ctx->uid_hint+17); |
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memcpy (keyid, ctx->passphrase_info+8, 8); |
info = xcalloc (1, strlen (utf8_uid) + strlen (ctx->keyid) + 32); |
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info = xcalloc (1, strlen (utf8_uid) + strlen (keyid) + 32); |
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sprintf (info, _("%s\n%s key, ID %s"), utf8_uid, |
sprintf (info, _("%s\n%s key, ID %s"), utf8_uid, |
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get_pubkey_algo (ctx->passphrase_info), keyid); |
get_pubkey_algo (ctx->passphrase_info), ctx->keyid); |
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SetDlgItemText (dlg, IDC_DECRYPT_MSG, info); |
SetDlgItemText (dlg, IDC_DECRYPT_MSG, info); |
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free_if_alloc (utf8_uid); |
free_if_alloc (utf8_uid); |
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free_if_alloc (info); |
free_if_alloc (info); |
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} |
} |
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SetDlgItemText (dlg, IDOK, _("&OK")); |
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SetDlgItemText (dlg, IDCANCEL, _("&Cancel")); |
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SetDlgItemText (dlg, IDC_DECRYPT_PWDINFO, _("Please enter your passphrase")); |
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SendDlgItemMessage (dlg, IDC_DECRYPT_PWD, EM_SETPASSWORDCHAR, |
SendDlgItemMessage (dlg, IDC_DECRYPT_PWD, EM_SETPASSWORDCHAR, |
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(WPARAM)(UINT)'*', 0); |
(WPARAM)(UINT)'*', 0); |
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CheckDlgButton (dlg, IDC_DECRYPT_HIDE, BST_CHECKED); |
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SetWindowText (dlg, _("Decryption")); |
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SetForegroundWindow (dlg); |
SetForegroundWindow (dlg); |
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center_window (dlg, ctx->main_wnd); |
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break; |
break; |
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case WM_COMMAND: |
case WM_COMMAND: |
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if (HIWORD (wparam) == BN_CLICKED && |
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LOWORD (wparam) == IDC_DECRYPT_HIDE) { |
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HWND hwnd; |
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hwnd = GetDlgItem (dlg, IDC_DECRYPT_PWD); |
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SendMessage (hwnd, EM_SETPASSWORDCHAR, |
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IsDlgButtonChecked (dlg, IDC_DECRYPT_HIDE)? '*' : 0, 0); |
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SetFocus (hwnd); |
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break; |
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} |
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switch (LOWORD (wparam)) { |
switch (LOWORD (wparam)) { |
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case IDCANCEL: |
case IDCANCEL: |
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ctx->cancel = 1; |
ctx->cancel = 1; |
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else |
else |
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SetDlgItemText (dlg, IDC_DECRYPT_PWDINFO, |
SetDlgItemText (dlg, IDC_DECRYPT_PWDINFO, |
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_("Please enter your passphrase")); |
_("Please enter your passphrase")); |
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n = SendDlgItemMessage (dlg, IDC_DECRYPT_PWD, |
n = SendDlgItemMessage (dlg, IDC_DECRYPT_PWD, |
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WM_GETTEXTLENGTH, 0, 0); |
WM_GETTEXTLENGTH, 0, 0); |
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if (n < 1) { |
if (n < 1) { |
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MessageBox (dlg, _("Please enter your passphrase"), |
MessageBox (dlg, _("Please enter your passphrase"), |
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ctx->cancel = 0; |
ctx->cancel = 0; |
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ctx->pass = xcalloc (1, n+2); |
ctx->pass = xcalloc (1, n+2); |
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GetDlgItemText (dlg, IDC_DECRYPT_PWD, ctx->pass, n+1); |
GetDlgItemText (dlg, IDC_DECRYPT_PWD, ctx->pass, n+1); |
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/*passphrase_put (&the_cache, ctx->keyid, ctx->pass);*/ |
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EndDialog (dlg, TRUE); |
EndDialog (dlg, TRUE); |
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break; |
break; |
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} |
} |
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{ |
{ |
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pass_cb_t cb = (pass_cb_t)hook; |
pass_cb_t cb = (pass_cb_t)hook; |
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HANDLE fp = (HANDLE)fd; |
HANDLE fp = (HANDLE)fd; |
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const char *pass; |
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DWORD nwritten = 0; |
DWORD nwritten = 0; |
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cb->prev_was_bad = prev_was_bad; |
cb->prev_was_bad = prev_was_bad; |
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if (!cb->pass && !cb->cancel) { |
if (!cb->pass && !cb->cancel) { |
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cb->uid_hint = uid_hint; |
cb->uid_hint = uid_hint; |
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cb->passphrase_info = passphrase_info; |
cb->passphrase_info = passphrase_info; |
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DialogBoxParam (mod_hinst_dll, (LPCTSTR)IDD_DECRYPT, |
memset (cb->keyid, 0, sizeof (cb->keyid)); |
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cb->main_hwnd, pass_cb_dlg_proc, (LPARAM)cb); |
memcpy (cb->keyid, cb->passphrase_info+8, 8); |
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} |
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if (the_cache && (pass=passphrase_get (the_cache, cb->keyid))) |
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cb->pass = xstrdup (pass); |
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else |
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DialogBoxParam (mod_hinst_dll, (LPCTSTR)IDD_DECRYPT, |
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cb->main_wnd, pass_cb_dlg_proc, (LPARAM)cb); |
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} |
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if (cb->cancel) |
if (cb->cancel) |
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WriteFile (fp, "\n", 1, &nwritten, NULL); |
WriteFile (fp, "\n", 1, &nwritten, NULL); |
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else if (cb->pass != NULL) { |
else if (cb->pass != NULL) { |
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pass_cb_t cb_val; |
pass_cb_t cb_val; |
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cb_val = xcalloc (1, sizeof *cb_val); |
cb_val = xcalloc (1, sizeof *cb_val); |
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cb_val->main_hwnd = main; |
cb_val->main_wnd = main; |
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return cb_val; |
return cb_val; |
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} |
} |
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} |
} |
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free_if_alloc (cb); |
free_if_alloc (cb); |
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} |
} |
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/* Release the passphrase cache. */ |
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void |
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free_pass_cache (void) |
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{ |
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invalidate_cache (the_cache); |
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the_cache = NULL; |
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} |