trunk/Src/wptClipVerifyDlg.cpp

/* wptClipVerifyDlg.cpp - WinPT verify dialog
 *      Copyright (C) 2001-2006 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
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <windows.h>
#include <time.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"
#include "StringBuffer.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. */
static 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/or the notation data of a signature. */
static void
show_notation_data (HWND dlg, gpgme_ctx_t ctx)
{
    gpgme_sig_notation_t nota;
    gpgme_sig_notation_t n;
    gpgme_verify_result_t res;
    StringBuffer p;

    res = gpgme_op_verify_result (ctx);
    if (!res || !res->signatures || !res->signatures->notations)
        return;
    nota = res->signatures->notations;

    p = "Notation data:\n";
    for (n=nota; n; n = n->next) {
        if (!n->name)
            p = p + "policy url: ";
        else
            p = p + n->name + " : " ;
        p = p +  "\"" + n->value + "\"\n";
    }

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


/* Dialog procedure for the clipboard verification. */
BOOL CALLBACK
clip_verify_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
{
    static verlist_ctrl_t vlv = NULL;
    static gpgme_ctx_t c = NULL;
    text_input_s *ctx;
    gpgme_error_t err;
    gpgme_signature_t sig = NULL, s;
    gpg_keycache_t kc = NULL;
    const char *det_data=NULL;
    int rc = 0, det_len=0;
    
    switch (msg) {
    case WM_INITDIALOG:
        SetWindowText (dlg, _("Verify"));
        SetDlgItemText (dlg, IDC_VERIFY_SAVE, _("&Save"));
        kc = keycache_get_ctx (KEYCACHE_PUB);
        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);
            EndDialog (dlg, FALSE);
            return FALSE;
        }

        if (gpgme_err_code (sig->status) == GPG_ERR_NO_PUBKEY) {
            gpgme_verify_result_t res;

            if (fetch_key_from_keyserver (dlg, sig)) {
                EndDialog (dlg, FALSE);
                return TRUE;
            }
            /* We need to call GPG again to get the real sig status. */
            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);
                EndDialog (dlg, FALSE);
                return TRUE;
            }
            /* Refresh the pointer because a new GPG instance has been
               created for the new verify operation. */
            res = gpgme_op_verify_result (c);
            if (!res || res->signatures == NULL)
                BUG (0);        
            sig = res->signatures;

        }

        if (gpgme_err_code (sig->status) == GPG_ERR_BAD_SIGNATURE && 
                 !sig->timestamp)
                 ;
        else if (!sig->timestamp) {
            msg_box (dlg, _("Invalid signature state."), _("Verify"), MB_ERR);
            EndDialog (dlg, FALSE);
            return FALSE;
        }
        verlist_build (&vlv, GetDlgItem (dlg, IDC_VERIFY_SIGLIST), 0);
        verlist_set_info_control (vlv, GetDlgItem (dlg, IDC_VERIFY_INFO));

        for (s = sig; s; s = s->next) {
            rc = verlist_add_sig (vlv, s);
            if (rc) {
                msg_box (dlg, _("Error while adding signature information."), 
                         _("Verify"), MB_ERR);
                break;
            }
        }
        
        if (!sig->notations)
            ShowWindow (GetDlgItem (dlg, IDC_VERIFY_SIGNOT), SW_HIDE);
        SetForegroundWindow (dlg);
        return TRUE;
        
    case WM_DESTROY:
        if (c != NULL) {
            gpgme_release (c);
            c = NULL;
        }
        if (vlv != NULL) {
            verlist_delete (vlv);
            vlv = NULL;
        }
        return FALSE;
        
    case WM_COMMAND:
        switch (LOWORD (wparam )) {
        case IDCANCEL:
            EndDialog (dlg, FALSE);
            return TRUE;

        case IDOK:
            EndDialog (dlg, TRUE);
            return TRUE;

        case IDC_VERIFY_SIGNOT:     
            show_notation_data (dlg, c);
            return TRUE;
            
        case IDC_VERIFY_SAVE:
            dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_FILE_SAVE, dlg,
                              file_save_dlg_proc, 0, _("Save Plaintext"), 
                              IDS_WINPT_FILE_SAVE);
            break;
        }
        break;
    }
    
    return FALSE;
}
1	werner	36	/* wptClipVerifyDlg.cpp - WinPT verify dialog
2	twoaday	256	* Copyright (C) 2001-2006 Timo Schulz
3	werner	36	*
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	werner	42	#ifdef HAVE_CONFIG_H
21			#include <config.h>
22			#endif
23
24	werner	36	#include <windows.h>
25	twoaday	41	#include <time.h>
26	werner	36
27	werner	47	#include "resource.h"
28	werner	36	#include "wptGPG.h"
29			#include "wptTypes.h"
30			#include "wptCommonCtl.h"
31			#include "wptKeylist.h"
32			#include "wptW32API.h"
33			#include "wptKeyserver.h"
34			#include "wptNLS.h"
35			#include "wptContext.h" /* for passwd_s */
36			#include "wptDlgs.h"
37			#include "wptErrors.h"
38			#include "wptVersion.h"
39	twoaday	278	#include "StringBuffer.h"
40	werner	36
41	twoaday	256	/* XXX use @out directly and do not use gpg_data_extract to store the plain text. */
42	werner	36
43
44			/* Verify data from the clipboard. If @is_detached is set, a detached
45			signature is assumed with the data the signature was calculated over
46			in @det_data. The context is returned in @r_ctx and the signature
47			in @r_sig.
48			Return value: 0 on success. */
49	twoaday	271	static gpgme_error_t
50	werner	36	gpg_clip_verify (int is_detached,
51			const char *det_data, size_t det_len,
52			gpgme_ctx_t *r_ctx,
53			gpgme_signature_t *r_sig)
54			{
55			gpgme_error_t err;
56			gpgme_ctx_t ctx;
57			gpgme_data_t dat = NULL;
58			gpgme_data_t out = NULL;
59			gpgme_data_t sig = NULL;
60			gpgme_verify_result_t res;
61
62			if (is_detached) {
63			err = gpgme_data_new_from_mem (&dat, det_data, det_len, 1);
64			if (err)
65			return err;
66			}
67
68			err = gpgme_new (&ctx);
69			if (err)
70			goto leave;
71			err = gpg_data_new_from_clipboard (&sig, 0);
72			if (err)
73			goto leave;
74			err = gpgme_data_new (&out);
75			if (err)
76			goto leave;
77			err = gpgme_op_verify (ctx, sig, dat, out);
78			if (err)
79			goto leave;
80			res = gpgme_op_verify_result (ctx);
81			if (!res \|\| !res->signatures) {
82			err = gpg_error (GPG_ERR_NO_DATA);
83			goto leave;
84			}
85			*r_sig = res->signatures;
86			*r_ctx = ctx;
87
88			leave:
89			if (err) {
90			gpgme_release (ctx);
91			*r_ctx = NULL;
92			}
93			if (dat)
94			gpgme_data_release (dat);
95			if (out)
96			gpgme_data_release (out);
97			gpgme_data_release (sig);
98			return err;
99			}
100
101
102	twoaday	256	/* Display the policy URL and/or the notation data of a signature. */
103	werner	36	static void
104	twoaday	225	show_notation_data (HWND dlg, gpgme_ctx_t ctx)
105	werner	36	{
106	twoaday	225	gpgme_sig_notation_t nota;
107	werner	36	gpgme_sig_notation_t n;
108	twoaday	225	gpgme_verify_result_t res;
109	twoaday	278	StringBuffer p;
110	werner	36
111	twoaday	225	res = gpgme_op_verify_result (ctx);
112			if (!res \|\| !res->signatures \|\| !res->signatures->notations)
113			return;
114			nota = res->signatures->notations;
115	twoaday	278
116			p = "Notation data:\n";
117	werner	47	for (n=nota; n; n = n->next) {
118	twoaday	278	if (!n->name)
119			p = p + "policy url: ";
120	werner	36	else
121	twoaday	278	p = p + n->name + " : " ;
122			p = p + "\"" + n->value + "\"\n";
123	werner	36	}
124
125	twoaday	278	msg_box (dlg, p.getBuffer (), _("Signature Information"), MB_INFO);
126	werner	36	}
127
128
129			/* Dialog procedure for the clipboard verification. */
130			BOOL CALLBACK
131			clip_verify_dlg_proc (HWND dlg, UINT msg, WPARAM wparam, LPARAM lparam)
132			{
133	twoaday	219	static verlist_ctrl_t vlv = NULL;
134	twoaday	225	static gpgme_ctx_t c = NULL;
135	twoaday	219	text_input_s *ctx;
136	werner	36	gpgme_error_t err;
137			gpgme_signature_t sig = NULL, s;
138			gpg_keycache_t kc = NULL;
139			const char *det_data=NULL;
140			int rc = 0, det_len=0;
141
142	twoaday	201	switch (msg) {
143	werner	36	case WM_INITDIALOG:
144			SetWindowText (dlg, _("Verify"));
145	twoaday	85	SetDlgItemText (dlg, IDC_VERIFY_SAVE, _("&Save"));
146	werner	36	kc = keycache_get_ctx (KEYCACHE_PUB);
147			ctx = (text_input_s *)lparam;
148			if (ctx) {
149			det_data = ctx->data;
150			det_len = ctx->length;
151			}
152	twoaday	225	err = gpg_clip_verify (ctx && ctx->length > 0,
153	werner	36	det_data, det_len, &c, &sig);
154			if (err) {
155			msg_box (dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
156			EndDialog (dlg, FALSE);
157			return FALSE;
158			}
159
160			if (gpgme_err_code (sig->status) == GPG_ERR_NO_PUBKEY) {
161	twoaday	271	gpgme_verify_result_t res;
162
163	twoaday	225	if (fetch_key_from_keyserver (dlg, sig)) {
164			EndDialog (dlg, FALSE);
165			return TRUE;
166	werner	36	}
167	twoaday	271	/* We need to call GPG again to get the real sig status. */
168			err = gpg_clip_verify (ctx && ctx->length > 0,
169			det_data, det_len, &c, &sig);
170			if (err) {
171			msg_box (dlg, gpgme_strerror (err), _("Verify"), MB_ERR);
172			EndDialog (dlg, FALSE);
173			return TRUE;
174			}
175			/* Refresh the pointer because a new GPG instance has been
176			created for the new verify operation. */
177			res = gpgme_op_verify_result (c);
178			if (!res \|\| res->signatures == NULL)
179			BUG (0);
180			sig = res->signatures;
181
182	twoaday	225	}
183	twoaday	271
184			if (gpgme_err_code (sig->status) == GPG_ERR_BAD_SIGNATURE &&
185	twoaday	41	!sig->timestamp)
186	werner	36	;
187	twoaday	76	else if (!sig->timestamp) {
188	werner	36	msg_box (dlg, _("Invalid signature state."), _("Verify"), MB_ERR);
189			EndDialog (dlg, FALSE);
190			return FALSE;
191			}
192	twoaday	219	verlist_build (&vlv, GetDlgItem (dlg, IDC_VERIFY_SIGLIST), 0);
193			verlist_set_info_control (vlv, GetDlgItem (dlg, IDC_VERIFY_INFO));
194	werner	36
195			for (s = sig; s; s = s->next) {
196	twoaday	219	rc = verlist_add_sig (vlv, s);
197	twoaday	271	if (rc) {
198			msg_box (dlg, _("Error while adding signature information."),
199	werner	36	_("Verify"), MB_ERR);
200	twoaday	271	break;
201			}
202	werner	36	}
203	twoaday	219
204	twoaday	225	if (!sig->notations)
205			ShowWindow (GetDlgItem (dlg, IDC_VERIFY_SIGNOT), SW_HIDE);
206	werner	36	SetForegroundWindow (dlg);
207			return TRUE;
208
209			case WM_DESTROY:
210	twoaday	225	if (c != NULL) {
211			gpgme_release (c);
212			c = NULL;
213			}
214			if (vlv != NULL) {
215	twoaday	219	verlist_delete (vlv);
216			vlv = NULL;
217	werner	36	}
218			return FALSE;
219
220			case WM_COMMAND:
221			switch (LOWORD (wparam )) {
222	twoaday	219	case IDCANCEL:
223			EndDialog (dlg, FALSE);
224	twoaday	225	return TRUE;
225	twoaday	219
226	werner	36	case IDOK:
227			EndDialog (dlg, TRUE);
228	twoaday	225	return TRUE;
229
230			case IDC_VERIFY_SIGNOT:
231			show_notation_data (dlg, c);
232			return TRUE;
233	werner	36
234			case IDC_VERIFY_SAVE:
235			dialog_box_param (glob_hinst, (LPCTSTR)IDD_WINPT_FILE_SAVE, dlg,
236	twoaday	73	file_save_dlg_proc, 0, _("Save Plaintext"),
237	werner	36	IDS_WINPT_FILE_SAVE);
238			break;
239			}
240			break;
241			}
242
243			return FALSE;
244			}