trunk/Src/wptClipVerifyDlg.cpp

/* wptClipVerifyDlg.cpp - WinPT verify dialog
 *      Copyright (C) 2001-2005 Timo Schulz
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * WinPT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include <windows.h>

#include "../resource.h"
#include "wptGPG.h"
#include "wptTypes.h"
#include "wptCommonCtl.h"
#include "wptKeylist.h"
#include "wptW32API.h"
#include "wptKeyserver.h"
#include "wptNLS.h"
#include "wptContext.h" /* for passwd_s */
#include "wptDlgs.h"
#include "wptErrors.h"
#include "wptVersion.h"


/* Verify data from the clipboard. If @is_detached is set, a detached
   signature is assumed with the data the signature was calculated over
   in @det_data. The context is returned in @r_ctx and the signature
   in @r_sig.
   Return value: 0 on success. */
gpgme_error_t
gpg_clip_verify (int is_detached,
                 const char *det_data, size_t det_len,
                 gpgme_ctx_t *r_ctx,
                 gpgme_signature_t *r_sig)
{
    gpgme_error_t err;
    gpgme_ctx_t ctx;
    gpgme_data_t dat = NULL;
    gpgme_data_t sig = NULL;
    gpgme_verify_result_t res;

    if (is_detached) {
        err = gpgme_data_new_from_mem (&dat, det_data, det_len, 1);
        if (err)
            return err;
    }
    
    err = gpgme_new (&ctx);
    if (err)
        goto leave;
    err = gpg_data_new_from_clipboard (&sig, 0);
    if (err)
        goto leave;     
    err = gpgme_op_verify (ctx, sig, dat, NULL);
    if (err)
        goto leave;
    res = gpgme_op_verify_result (ctx);
    if (!res || !res->signatures) {
        err = gpg_error (GPG_ERR_NO_DATA);
        goto leave;
    }
    *r_sig = res->signatures;
    *r_ctx = ctx;

leave:
    if (err) {
        gpgme_release (ctx);
        *r_ctx = NULL;
    }
    if (dat)
        gpgme_data_release (dat);
    gpgme_data_release (sig);
    return err;
}


/* Display the policy URL and the notation data of a signature.
   If @not is NULL, it is assumed there is no data. 
   @dlg is the handle to the calling dialog. */
static void
show_notation_data (HWND dlg, gpgme_sig_notation_t not)
{
    gpgme_sig_notation_t n;
    size_t len=0;
    char *p;

    for (n=not; n; n = n->next) {
        if (n->name)
            len += strlen (n->name) + 1;
        else
            len += strlen ("policy URL") + 1;
        len += strlen (n->value) + 1;
        len += 6;
    }
    p = (char *)calloc (1, len+64);
    if (!p)
        BUG (NULL);
    strcpy (p, "Notation data:\n");
    for (n=not; n; n = n->next) {
        if (!n->name)
            strcat (p, "policy url: ");
        else {
            strcat (p, n->name);
            strcat (p, " : ");
        }
        strcat (p, n->value);
        strcat (p, "\n");
    }

    msg_box (dlg, p, _("Signature Information"), MB_INFO);
    free (p);
}


/* Dialog procedure for the clipboard verification. */
BOOL CALLBACK
clip_verify_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
{
    static listview_ctrl_t lv = NULL;
    static text_input_s *ctx = NULL;
    gpgme_error_t err;
    gpgme_signature_t sig = NULL, s;
    gpgme_keycache_t kc = NULL;
    gpgme_ctx_t c;
    char keyid[16+1];
    u16 port = HKP_PORT;
    int rc = 0;
    
    switch( msg ) {
    case WM_INITDIALOG:
    #ifndef LANG_DE
        SetWindowText (dlg, _("Verify"));
    #endif
        kc = keycache_get_ctx (KEYCACHE_PUB);
        if (!kc)
            BUG (NULL);
        ctx = (text_input_s *)lparam;
        err = gpg_clip_verify (ctx && ctx->length > 0, 
                               ctx->data, ctx->length, &c, &sig);
        if (err) {              
            msg_box (dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
            gpgme_release (c);
            EndDialog (dlg, FALSE);
            return FALSE;
        }

        if (sig->status == gpg_error (GPG_ERR_NO_PUBKEY)) {
            const char * kserv;
            const char *fpr = sig->fpr;
            if (!fpr)
                fpr = "0xDEADBEEF";
            if (strlen (fpr) == 40)
                fpr += 32;
            else 
                fpr += 24;
            rc = log_box (_("Verify"), MB_INFO|MB_YESNO,
                          _("Signature made %s using %s key ID 0x%s\n"
                          "Cannot check signature: public key not found\n\n"
                          "Do you want to try to retrieve the key from the keyserver?"),
                          strtimestamp (sig->timestamp),
                          get_key_pubalgo (sig->pubkey_algo), fpr);
            if (rc == IDNO) {
                msg_box (dlg, gpg_sigstat[GPGME_SIG_STAT_NOKEY], _("Verify"), MB_WARN);
                gpgme_release (c);
                EndDialog (dlg, FALSE);
                return FALSE;
            }
            if (0) {
            /* FIXME: does GPGME include the keyserver status
            kserv = gpgme_sig_get_string_attr (sig, GPGME_ATTR_KEYSERVER);
            if (kserv && strncmp (kserv, "hkp://", 6)) {
                rc = log_box (_("Verify"), MB_INFO|MB_YESNO,
                              _("The users preferred keyserver is '%s'.\n"
                                "Do you want to use it to fetch the key?"), kserv);
                if (rc == IDNO) {
                    kserv = default_keyserver;
                    port = default_keyserver_port;
                }*/
            }
            
            else {
                kserv = default_keyserver;
                port = default_keyserver_port;
            }
            if (!hkp_recv_key (dlg, kserv, port, keyid, 0, 0)) {
                keycache_reload (dlg);
                kc = keycache_get_ctx (KEYCACHE_PUB);
                if (!kc)
                    BUG (dlg);
            }
        }
        else if (sig->status == gpg_error (GPG_ERR_BAD_SIGNATURE) && !sig->timestamp)
                 ;
        else if (!sig->timestamp || !sig->validity) {
            msg_box (dlg, _("Invalid signature state."), _("Verify"), MB_ERR);
            gpgme_release (c);
            EndDialog (dlg, FALSE);
            return FALSE;
        }
        verlist_build (&lv, GetDlgItem (dlg, IDC_VERIFY_SIGLIST), 0);

        for (s = sig; s; s = s->next) {
            rc = verlist_add_sig (lv, s);
            if (rc)
                msg_box (dlg, _("Could not extract key or signature information."), 
                         _("Verify"), MB_ERR);
        }
        if (sig->exp_timestamp > (DWORD)time (NULL))
            SetDlgItemText( dlg, IDC_VERIFY_INFO, _("The signature is expired!") );
        if (sig->notations)
            show_notation_data (dlg, sig->notations);
        gpgme_release (c);
        SetForegroundWindow (dlg);
        set_active_window (dlg);
        return TRUE;
        
    case WM_DESTROY:
        reset_active_window ();
        if (lv) {
            listview_release (lv);
            lv = NULL;
        }
        return FALSE;
        
    case WM_SYSCOMMAND:
        if (LOWORD (wparam) == SC_CLOSE)
            EndDialog (dlg, TRUE);
        return FALSE;
        
    case WM_COMMAND:
        switch (LOWORD (wparam )) {
        case IDOK:
            EndDialog (dlg, TRUE);
            return FALSE;
            
        case IDC_VERIFY_SAVE:
            dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_FILE_SAVE, dlg,
                              file_save_dlg_proc, NULL, _("Save Plaintext"), 
                              IDS_WINPT_FILE_SAVE);
            break;
        }
        break;
    }
    
    return FALSE;
}

1	twoaday	2	/* wptClipVerifyDlg.cpp - WinPT verify dialog
2			* Copyright (C) 2001-2005 Timo Schulz
3			*
4			* This file is part of WinPT.
5			*
6			* WinPT is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* WinPT is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with WinPT; if not, write to the Free Software Foundation,
18			* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19			*/
20
21			#include <windows.h>
22
23			#include "../resource.h"
24			#include "wptGPG.h"
25			#include "wptTypes.h"
26			#include "wptCommonCtl.h"
27			#include "wptKeylist.h"
28			#include "wptW32API.h"
29			#include "wptKeyserver.h"
30			#include "wptNLS.h"
31			#include "wptContext.h" /* for passwd_s */
32			#include "wptDlgs.h"
33			#include "wptErrors.h"
34			#include "wptVersion.h"
35
36	twoaday	23
37			/* Verify data from the clipboard. If @is_detached is set, a detached
38			signature is assumed with the data the signature was calculated over
39			in @det_data. The context is returned in @r_ctx and the signature
40			in @r_sig.
41			Return value: 0 on success. */
42			gpgme_error_t
43			gpg_clip_verify (int is_detached,
44			const char *det_data, size_t det_len,
45			gpgme_ctx_t *r_ctx,
46			gpgme_signature_t *r_sig)
47			{
48			gpgme_error_t err;
49			gpgme_ctx_t ctx;
50			gpgme_data_t dat = NULL;
51			gpgme_data_t sig = NULL;
52			gpgme_verify_result_t res;
53
54			if (is_detached) {
55			err = gpgme_data_new_from_mem (&dat, det_data, det_len, 1);
56			if (err)
57			return err;
58			}
59
60			err = gpgme_new (&ctx);
61			if (err)
62			goto leave;
63			err = gpg_data_new_from_clipboard (&sig, 0);
64			if (err)
65			goto leave;
66			err = gpgme_op_verify (ctx, sig, dat, NULL);
67			if (err)
68			goto leave;
69			res = gpgme_op_verify_result (ctx);
70			if (!res \|\| !res->signatures) {
71			err = gpg_error (GPG_ERR_NO_DATA);
72			goto leave;
73			}
74			*r_sig = res->signatures;
75			*r_ctx = ctx;
76
77			leave:
78			if (err) {
79			gpgme_release (ctx);
80			*r_ctx = NULL;
81			}
82			if (dat)
83			gpgme_data_release (dat);
84			gpgme_data_release (sig);
85			return err;
86			}
87
88
89			/* Display the policy URL and the notation data of a signature.
90			If @not is NULL, it is assumed there is no data.
91			@dlg is the handle to the calling dialog. */
92			static void
93			show_notation_data (HWND dlg, gpgme_sig_notation_t not)
94			{
95			gpgme_sig_notation_t n;
96			size_t len=0;
97			char *p;
98
99			for (n=not; n; n = n->next) {
100			if (n->name)
101			len += strlen (n->name) + 1;
102			else
103			len += strlen ("policy URL") + 1;
104			len += strlen (n->value) + 1;
105			len += 6;
106			}
107			p = (char *)calloc (1, len+64);
108			if (!p)
109			BUG (NULL);
110			strcpy (p, "Notation data:\n");
111			for (n=not; n; n = n->next) {
112			if (!n->name)
113			strcat (p, "policy url: ");
114			else {
115			strcat (p, n->name);
116			strcat (p, " : ");
117			}
118			strcat (p, n->value);
119			strcat (p, "\n");
120			}
121
122			msg_box (dlg, p, _("Signature Information"), MB_INFO);
123			free (p);
124			}
125
126
127			/* Dialog procedure for the clipboard verification. */
128	twoaday	2	BOOL CALLBACK
129			clip_verify_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
130			{
131			static listview_ctrl_t lv = NULL;
132			static text_input_s *ctx = NULL;
133			gpgme_error_t err;
134	twoaday	23	gpgme_signature_t sig = NULL, s;
135	twoaday	2	gpgme_keycache_t kc = NULL;
136	twoaday	23	gpgme_ctx_t c;
137	twoaday	2	char keyid[16+1];
138			u16 port = HKP_PORT;
139	twoaday	23	int rc = 0;
140	twoaday	2
141			switch( msg ) {
142			case WM_INITDIALOG:
143	twoaday	23	#ifndef LANG_DE
144			SetWindowText (dlg, _("Verify"));
145			#endif
146			kc = keycache_get_ctx (KEYCACHE_PUB);
147			if (!kc)
148			BUG (NULL);
149	twoaday	2	ctx = (text_input_s *)lparam;
150	twoaday	23	err = gpg_clip_verify (ctx && ctx->length > 0,
151			ctx->data, ctx->length, &c, &sig);
152			if (err) {
153			msg_box (dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
154			gpgme_release (c);
155			EndDialog (dlg, FALSE);
156	twoaday	2	return FALSE;
157	twoaday	23	}
158	twoaday	2
159	twoaday	23	if (sig->status == gpg_error (GPG_ERR_NO_PUBKEY)) {
160	twoaday	2	const char * kserv;
161	twoaday	23	const char *fpr = sig->fpr;
162			if (!fpr)
163			fpr = "0xDEADBEEF";
164			if (strlen (fpr) == 40)
165			fpr += 32;
166			else
167			fpr += 24;
168			rc = log_box (_("Verify"), MB_INFO\|MB_YESNO,
169	twoaday	2	_("Signature made %s using %s key ID 0x%s\n"
170			"Cannot check signature: public key not found\n\n"
171			"Do you want to try to retrieve the key from the keyserver?"),
172	twoaday	23	strtimestamp (sig->timestamp),
173			get_key_pubalgo (sig->pubkey_algo), fpr);
174			if (rc == IDNO) {
175			msg_box (dlg, gpg_sigstat[GPGME_SIG_STAT_NOKEY], _("Verify"), MB_WARN);
176			gpgme_release (c);
177			EndDialog (dlg, FALSE);
178	twoaday	2	return FALSE;
179			}
180	twoaday	23	if (0) {
181			/* FIXME: does GPGME include the keyserver status
182	twoaday	2	kserv = gpgme_sig_get_string_attr (sig, GPGME_ATTR_KEYSERVER);
183			if (kserv && strncmp (kserv, "hkp://", 6)) {
184			rc = log_box (_("Verify"), MB_INFO\|MB_YESNO,
185			_("The users preferred keyserver is '%s'.\n"
186			"Do you want to use it to fetch the key?"), kserv);
187			if (rc == IDNO) {
188			kserv = default_keyserver;
189			port = default_keyserver_port;
190	twoaday	23	}*/
191	twoaday	2	}
192	twoaday	23
193	twoaday	2	else {
194			kserv = default_keyserver;
195			port = default_keyserver_port;
196			}
197			if (!hkp_recv_key (dlg, kserv, port, keyid, 0, 0)) {
198			keycache_reload (dlg);
199			kc = keycache_get_ctx (KEYCACHE_PUB);
200			if (!kc)
201			BUG (dlg);
202			}
203			}
204	twoaday	23	else if (sig->status == gpg_error (GPG_ERR_BAD_SIGNATURE) && !sig->timestamp)
205	twoaday	2	;
206	twoaday	23	else if (!sig->timestamp \|\| !sig->validity) {
207			msg_box (dlg, _("Invalid signature state."), _("Verify"), MB_ERR);
208			gpgme_release (c);
209			EndDialog (dlg, FALSE);
210	twoaday	2	return FALSE;
211			}
212	twoaday	23	verlist_build (&lv, GetDlgItem (dlg, IDC_VERIFY_SIGLIST), 0);
213	twoaday	2
214	twoaday	23	for (s = sig; s; s = s->next) {
215			rc = verlist_add_sig (lv, s);
216			if (rc)
217			msg_box (dlg, _("Could not extract key or signature information."),
218			_("Verify"), MB_ERR);
219	twoaday	2	}
220	twoaday	23	if (sig->exp_timestamp > (DWORD)time (NULL))
221	twoaday	2	SetDlgItemText( dlg, IDC_VERIFY_INFO, _("The signature is expired!") );
222	twoaday	23	if (sig->notations)
223			show_notation_data (dlg, sig->notations);
224			gpgme_release (c);
225			SetForegroundWindow (dlg);
226			set_active_window (dlg);
227	twoaday	2	return TRUE;
228
229			case WM_DESTROY:
230	twoaday	23	reset_active_window ();
231			if (lv) {
232			listview_release (lv);
233	twoaday	2	lv = NULL;
234			}
235			return FALSE;
236
237			case WM_SYSCOMMAND:
238	twoaday	23	if (LOWORD (wparam) == SC_CLOSE)
239			EndDialog (dlg, TRUE);
240	twoaday	2	return FALSE;
241
242			case WM_COMMAND:
243	twoaday	23	switch (LOWORD (wparam )) {
244	twoaday	2	case IDOK:
245	twoaday	23	EndDialog (dlg, TRUE);
246	twoaday	2	return FALSE;
247
248			case IDC_VERIFY_SAVE:
249	twoaday	23	dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_FILE_SAVE, dlg,
250	twoaday	2	file_save_dlg_proc, NULL, _("Save Plaintext"),
251	twoaday	23	IDS_WINPT_FILE_SAVE);
252	twoaday	2	break;
253			}
254			break;
255			}
256
257			return FALSE;
258	twoaday	23	}
259