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"

/* XXX use out directly and do not use gpg_data_extract to store the plain text. */


/* 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 out = 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_data_new (&out);
    if (err)
        goto leave;
    
    err = gpgme_op_verify (ctx, sig, dat, out);
    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);
    if (out)
        gpgme_data_release (out);
    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 + 2;
        else
            len += strlen ("policy URL") + 1 + 2;
        len += strlen (n->value) + 1 + 2;
        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, "\"");
        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;
    gpg_keycache_t kc = NULL;
    gpgme_ctx_t c=NULL;
    char keyid[16+1];
    const char *det_data=NULL;
    u16 port = HKP_PORT;
    int rc = 0, det_len=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;
        if (ctx) {
            det_data = ctx->data;
            det_len = ctx->length;
        }
        err = gpg_clip_verify (ctx && ctx->length > 0, 
                               det_data, det_len, &c, &sig);
        if (err) {
            msg_box (dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
            if (c)
                gpgme_release (c);
            EndDialog (dlg, FALSE);
            return FALSE;
        }

        if (gpgme_err_code (sig->status) == 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 (gpgme_err_code (sig->status) == 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	24	/* XXX use out directly and do not use gpg_data_extract to store the plain text. */
37	twoaday	23
38	twoaday	24
39	twoaday	23	/* Verify data from the clipboard. If @is_detached is set, a detached
40			signature is assumed with the data the signature was calculated over
41			in @det_data. The context is returned in @r_ctx and the signature
42			in @r_sig.
43			Return value: 0 on success. */
44			gpgme_error_t
45			gpg_clip_verify (int is_detached,
46			const char *det_data, size_t det_len,
47			gpgme_ctx_t *r_ctx,
48			gpgme_signature_t *r_sig)
49			{
50			gpgme_error_t err;
51			gpgme_ctx_t ctx;
52			gpgme_data_t dat = NULL;
53	twoaday	24	gpgme_data_t out = NULL;
54	twoaday	23	gpgme_data_t sig = NULL;
55			gpgme_verify_result_t res;
56
57			if (is_detached) {
58			err = gpgme_data_new_from_mem (&dat, det_data, det_len, 1);
59			if (err)
60			return err;
61			}
62
63			err = gpgme_new (&ctx);
64			if (err)
65			goto leave;
66			err = gpg_data_new_from_clipboard (&sig, 0);
67			if (err)
68	twoaday	24	goto leave;
69			err = gpgme_data_new (&out);
70	twoaday	23	if (err)
71			goto leave;
72	twoaday	24
73			err = gpgme_op_verify (ctx, sig, dat, out);
74			if (err)
75			goto leave;
76	twoaday	23	res = gpgme_op_verify_result (ctx);
77			if (!res \|\| !res->signatures) {
78			err = gpg_error (GPG_ERR_NO_DATA);
79			goto leave;
80			}
81			*r_sig = res->signatures;
82			*r_ctx = ctx;
83
84			leave:
85			if (err) {
86			gpgme_release (ctx);
87			*r_ctx = NULL;
88			}
89			if (dat)
90			gpgme_data_release (dat);
91	twoaday	24	if (out)
92			gpgme_data_release (out);
93	twoaday	23	gpgme_data_release (sig);
94			return err;
95			}
96
97
98			/* Display the policy URL and the notation data of a signature.
99			If @not is NULL, it is assumed there is no data.
100			@dlg is the handle to the calling dialog. */
101			static void
102			show_notation_data (HWND dlg, gpgme_sig_notation_t not)
103			{
104			gpgme_sig_notation_t n;
105			size_t len=0;
106			char *p;
107
108			for (n=not; n; n = n->next) {
109			if (n->name)
110	twoaday	24	len += strlen (n->name) + 1 + 2;
111	twoaday	23	else
112	twoaday	24	len += strlen ("policy URL") + 1 + 2;
113			len += strlen (n->value) + 1 + 2;
114	twoaday	23	len += 6;
115			}
116			p = (char *)calloc (1, len+64);
117			if (!p)
118			BUG (NULL);
119			strcpy (p, "Notation data:\n");
120			for (n=not; n; n = n->next) {
121			if (!n->name)
122			strcat (p, "policy url: ");
123			else {
124			strcat (p, n->name);
125			strcat (p, " : ");
126			}
127	twoaday	24	strcat (p, "\"");
128	twoaday	23	strcat (p, n->value);
129	twoaday	24	strcat (p, "\"\n");
130	twoaday	23	}
131
132			msg_box (dlg, p, _("Signature Information"), MB_INFO);
133			free (p);
134			}
135
136
137			/* Dialog procedure for the clipboard verification. */
138	twoaday	2	BOOL CALLBACK
139			clip_verify_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
140			{
141			static listview_ctrl_t lv = NULL;
142			static text_input_s *ctx = NULL;
143			gpgme_error_t err;
144	twoaday	23	gpgme_signature_t sig = NULL, s;
145	twoaday	25	gpg_keycache_t kc = NULL;
146	twoaday	24	gpgme_ctx_t c=NULL;
147	twoaday	2	char keyid[16+1];
148	twoaday	24	const char *det_data=NULL;
149	twoaday	2	u16 port = HKP_PORT;
150	twoaday	24	int rc = 0, det_len=0;
151	twoaday	2
152			switch( msg ) {
153			case WM_INITDIALOG:
154	twoaday	23	#ifndef LANG_DE
155			SetWindowText (dlg, _("Verify"));
156			#endif
157			kc = keycache_get_ctx (KEYCACHE_PUB);
158			if (!kc)
159			BUG (NULL);
160	twoaday	2	ctx = (text_input_s *)lparam;
161	twoaday	24	if (ctx) {
162			det_data = ctx->data;
163			det_len = ctx->length;
164			}
165	twoaday	23	err = gpg_clip_verify (ctx && ctx->length > 0,
166	twoaday	24	det_data, det_len, &c, &sig);
167			if (err) {
168	twoaday	23	msg_box (dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
169	twoaday	24	if (c)
170			gpgme_release (c);
171	twoaday	23	EndDialog (dlg, FALSE);
172	twoaday	2	return FALSE;
173	twoaday	23	}
174	twoaday	2
175	twoaday	24	if (gpgme_err_code (sig->status) == GPG_ERR_NO_PUBKEY) {
176	twoaday	2	const char * kserv;
177	twoaday	23	const char *fpr = sig->fpr;
178			if (!fpr)
179			fpr = "0xDEADBEEF";
180			if (strlen (fpr) == 40)
181			fpr += 32;
182			else
183			fpr += 24;
184			rc = log_box (_("Verify"), MB_INFO\|MB_YESNO,
185	twoaday	2	_("Signature made %s using %s key ID 0x%s\n"
186			"Cannot check signature: public key not found\n\n"
187			"Do you want to try to retrieve the key from the keyserver?"),
188	twoaday	23	strtimestamp (sig->timestamp),
189			get_key_pubalgo (sig->pubkey_algo), fpr);
190			if (rc == IDNO) {
191			msg_box (dlg, gpg_sigstat[GPGME_SIG_STAT_NOKEY], _("Verify"), MB_WARN);
192			gpgme_release (c);
193			EndDialog (dlg, FALSE);
194	twoaday	2	return FALSE;
195			}
196	twoaday	23	if (0) {
197			/* FIXME: does GPGME include the keyserver status
198	twoaday	2	kserv = gpgme_sig_get_string_attr (sig, GPGME_ATTR_KEYSERVER);
199			if (kserv && strncmp (kserv, "hkp://", 6)) {
200			rc = log_box (_("Verify"), MB_INFO\|MB_YESNO,
201			_("The users preferred keyserver is '%s'.\n"
202			"Do you want to use it to fetch the key?"), kserv);
203			if (rc == IDNO) {
204			kserv = default_keyserver;
205			port = default_keyserver_port;
206	twoaday	23	}*/
207	twoaday	2	}
208	twoaday	23
209	twoaday	2	else {
210			kserv = default_keyserver;
211			port = default_keyserver_port;
212			}
213			if (!hkp_recv_key (dlg, kserv, port, keyid, 0, 0)) {
214			keycache_reload (dlg);
215			kc = keycache_get_ctx (KEYCACHE_PUB);
216			if (!kc)
217			BUG (dlg);
218			}
219			}
220	twoaday	24	else if (gpgme_err_code (sig->status) == GPG_ERR_BAD_SIGNATURE && !sig->timestamp)
221	twoaday	2	;
222	twoaday	23	else if (!sig->timestamp \|\| !sig->validity) {
223			msg_box (dlg, _("Invalid signature state."), _("Verify"), MB_ERR);
224			gpgme_release (c);
225			EndDialog (dlg, FALSE);
226	twoaday	2	return FALSE;
227			}
228	twoaday	23	verlist_build (&lv, GetDlgItem (dlg, IDC_VERIFY_SIGLIST), 0);
229	twoaday	2
230	twoaday	23	for (s = sig; s; s = s->next) {
231			rc = verlist_add_sig (lv, s);
232			if (rc)
233			msg_box (dlg, _("Could not extract key or signature information."),
234			_("Verify"), MB_ERR);
235	twoaday	2	}
236	twoaday	23	if (sig->exp_timestamp > (DWORD)time (NULL))
237	twoaday	2	SetDlgItemText( dlg, IDC_VERIFY_INFO, _("The signature is expired!") );
238	twoaday	23	if (sig->notations)
239			show_notation_data (dlg, sig->notations);
240			gpgme_release (c);
241			SetForegroundWindow (dlg);
242			set_active_window (dlg);
243	twoaday	2	return TRUE;
244
245			case WM_DESTROY:
246	twoaday	23	reset_active_window ();
247			if (lv) {
248			listview_release (lv);
249	twoaday	2	lv = NULL;
250			}
251			return FALSE;
252
253			case WM_SYSCOMMAND:
254	twoaday	23	if (LOWORD (wparam) == SC_CLOSE)
255			EndDialog (dlg, TRUE);
256	twoaday	2	return FALSE;
257
258			case WM_COMMAND:
259	twoaday	23	switch (LOWORD (wparam )) {
260	twoaday	2	case IDOK:
261	twoaday	23	EndDialog (dlg, TRUE);
262	twoaday	2	return FALSE;
263
264			case IDC_VERIFY_SAVE:
265	twoaday	23	dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_FILE_SAVE, dlg,
266	twoaday	2	file_save_dlg_proc, NULL, _("Save Plaintext"),
267	twoaday	23	IDS_WINPT_FILE_SAVE);
268	twoaday	2	break;
269			}
270			break;
271			}
272
273			return FALSE;
274	twoaday	23	}
275	twoaday	25