Support for doing DNS at the proxy end. I've invented a new type of
[u/mdw/putty] / windlg.c
index e13cfa1..a8603e6 100644 (file)
--- a/windlg.c
+++ b/windlg.c
@@ -27,6 +27,8 @@ static int requested_help;
 
 static struct prefslist cipherlist;
 
+struct sesslist sesslist;             /* exported to window.c */
+
 #define PRINTER_DISABLED_STRING "None (printing disabled)"
 
 void force_normal(HWND hwnd)
@@ -140,7 +142,7 @@ static int CALLBACK LogProc(HWND hwnd, UINT msg,
                            memcpy(p, sel_nl, sizeof(sel_nl));
                            p += sizeof(sel_nl);
                        }
-                       write_aclip(clipdata, size, TRUE);
+                       write_aclip(NULL, clipdata, size, TRUE);
                        sfree(clipdata);
                    }
                    sfree(selitems);
@@ -452,6 +454,11 @@ enum { IDCX_ABOUT =
     IDC_PROXYPORTEDIT,
     IDC_PROXYEXCLUDESTATIC,
     IDC_PROXYEXCLUDEEDIT,
+    IDC_PROXYLOCALHOST,
+    IDC_PROXYDNSSTATIC,
+    IDC_PROXYDNSNO,
+    IDC_PROXYDNSAUTO,
+    IDC_PROXYDNSYES,
     IDC_PROXYUSERSTATIC,
     IDC_PROXYUSEREDIT,
     IDC_PROXYPASSSTATIC,
@@ -548,6 +555,8 @@ enum { IDCX_ABOUT =
     IDC_BUGD_DERIVEKEY2,
     IDC_BUGS_RSAPAD2,
     IDC_BUGD_RSAPAD2,
+    IDC_BUGS_DHGEX2,
+    IDC_BUGD_DHGEX2,
     sshbugspanelend,
 
     selectionpanelstart,
@@ -865,6 +874,39 @@ char *help_context_cmd(int id)
       case IDC_NODELAY:
         return "JI(`',`connection.nodelay')";
 
+      case IDC_PROXYTYPESTATIC:
+      case IDC_PROXYTYPENONE:
+      case IDC_PROXYTYPEHTTP:
+      case IDC_PROXYTYPESOCKS:
+      case IDC_PROXYTYPETELNET:
+        return "JI(`',`proxy.type')";
+      case IDC_PROXYHOSTSTATIC:
+      case IDC_PROXYHOSTEDIT:
+      case IDC_PROXYPORTSTATIC:
+      case IDC_PROXYPORTEDIT:
+        return "JI(`',`proxy.main')";
+      case IDC_PROXYEXCLUDESTATIC:
+      case IDC_PROXYEXCLUDEEDIT:
+      case IDC_PROXYLOCALHOST:
+        return "JI(`',`proxy.exclude')";
+      case IDC_PROXYDNSSTATIC:
+      case IDC_PROXYDNSNO:
+      case IDC_PROXYDNSAUTO:
+      case IDC_PROXYDNSYES:
+       return "JI(`',`proxy.dns')";
+      case IDC_PROXYUSERSTATIC:
+      case IDC_PROXYUSEREDIT:
+      case IDC_PROXYPASSSTATIC:
+      case IDC_PROXYPASSEDIT:
+        return "JI(`',`proxy.auth')";
+      case IDC_PROXYTELNETCMDSTATIC:
+      case IDC_PROXYTELNETCMDEDIT:
+        return "JI(`',`proxy.command')";
+      case IDC_PROXYSOCKSVERSTATIC:
+      case IDC_PROXYSOCKSVER5:
+      case IDC_PROXYSOCKSVER4:
+        return "JI(`',`proxy.socksver')";
+
       case IDC_TSSTATIC:
       case IDC_TSEDIT:
         return "JI(`',`telnet.termspeed')";
@@ -1017,6 +1059,9 @@ char *help_context_cmd(int id)
       case IDC_BUGS_RSAPAD2:
       case IDC_BUGD_RSAPAD2:
        return "JI(`',`ssh.bugs.rsapad2')";
+      case IDC_BUGS_DHGEX2:
+      case IDC_BUGD_DHGEX2:
+       return "JI(`',`ssh.bugs.dhgex2')";
 
       default:
         return NULL;
@@ -1037,9 +1082,9 @@ static void init_dlg_ctrls(HWND hwnd, int keepsess)
        n = SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_GETCOUNT, 0, 0);
        for (i = n; i-- > 0;)
            SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_DELETESTRING, i, 0);
-       for (i = 0; i < nsessions; i++)
+       for (i = 0; i < sesslist.nsessions; i++)
            SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_ADDSTRING,
-                              0, (LPARAM) (sessions[i]));
+                              0, (LPARAM) (sesslist.sessions[i]));
     }
     SetDlgItemInt(hwnd, IDC_PORT, cfg.port, FALSE);
     CheckRadioButton(hwnd, IDC_PROTRAW, IDC_PROTSSH,
@@ -1315,6 +1360,11 @@ static void init_dlg_ctrls(HWND hwnd, int keepsess)
     SetDlgItemText(hwnd, IDC_PROXYHOSTEDIT, cfg.proxy_host);
     SetDlgItemInt(hwnd, IDC_PROXYPORTEDIT, cfg.proxy_port, FALSE);
     SetDlgItemText(hwnd, IDC_PROXYEXCLUDEEDIT, cfg.proxy_exclude_list);
+    CheckDlgButton(hwnd, IDC_PROXYLOCALHOST, cfg.even_proxy_localhost);
+    CheckRadioButton(hwnd, IDC_PROXYDNSNO, IDC_PROXYDNSYES,
+                    cfg.proxy_dns == PROXYDNS_NO ? IDC_PROXYDNSNO :
+                    cfg.proxy_dns == PROXYDNS_YES ? IDC_PROXYDNSYES :
+                    IDC_PROXYDNSAUTO);
     SetDlgItemText(hwnd, IDC_PROXYTELNETCMDEDIT, cfg.proxy_telnet_command);
     SetDlgItemText(hwnd, IDC_PROXYUSEREDIT, cfg.proxy_username);
     SetDlgItemText(hwnd, IDC_PROXYPASSEDIT, cfg.proxy_password);
@@ -1364,6 +1414,13 @@ static void init_dlg_ctrls(HWND hwnd, int keepsess)
     SendDlgItemMessage(hwnd, IDC_BUGD_RSAPAD2, CB_SETCURSEL,
                       cfg.sshbug_rsapad2 == BUG_ON ? 2 :
                       cfg.sshbug_rsapad2 == BUG_OFF ? 1 : 0, 0);
+    SendDlgItemMessage(hwnd, IDC_BUGD_DHGEX2, CB_RESETCONTENT, 0, 0);
+    SendDlgItemMessage(hwnd, IDC_BUGD_DHGEX2, CB_ADDSTRING, 0, (LPARAM)"Auto");
+    SendDlgItemMessage(hwnd, IDC_BUGD_DHGEX2, CB_ADDSTRING, 0, (LPARAM)"Off");
+    SendDlgItemMessage(hwnd, IDC_BUGD_DHGEX2, CB_ADDSTRING, 0, (LPARAM)"On");
+    SendDlgItemMessage(hwnd, IDC_BUGD_DHGEX2, CB_SETCURSEL,
+                      cfg.sshbug_dhgex2 == BUG_ON ? 2 :
+                      cfg.sshbug_dhgex2 == BUG_OFF ? 1 : 0, 0);
 }
 
 struct treeview_faff {
@@ -1809,7 +1866,7 @@ static void create_controls(HWND hwnd, int dlgtype, int panel)
     }
 
     if (panel == proxypanelstart) {
-       /* The Proxy panel. Accelerators used: [acgoh] ntslypeuwmv */
+       /* The Proxy panel. Accelerators used: [acgoh] ntslypeuwmvxd */
        struct ctlpos cp;
        ctlposinit(&cp, hwnd, 80, 3, 13);
        if (dlgtype == 0) {
@@ -1827,6 +1884,13 @@ static void create_controls(HWND hwnd, int dlgtype, int panel)
            multiedit(&cp,
                      "&Exclude Hosts/IPs", IDC_PROXYEXCLUDESTATIC,
                      IDC_PROXYEXCLUDEEDIT, 100, NULL);
+           checkbox(&cp, "Consider pro&xying local host connections",
+                    IDC_PROXYLOCALHOST);
+           radioline(&cp, "Do &DNS name lookup at proxy end:",
+                     IDC_PROXYDNSSTATIC, 3,
+                     "No", IDC_PROXYDNSNO,
+                     "Auto", IDC_PROXYDNSAUTO,
+                     "Yes", IDC_PROXYDNSYES, NULL);
            staticedit(&cp, "&Username", IDC_PROXYUSERSTATIC,
                       IDC_PROXYUSEREDIT, 60);
            staticpassedit(&cp, "Pass&word", IDC_PROXYPASSSTATIC,
@@ -1967,6 +2031,8 @@ static void create_controls(HWND hwnd, int dlgtype, int panel)
                      IDC_BUGS_DERIVEKEY2, IDC_BUGD_DERIVEKEY2, 20);
            staticddl(&cp, "Requires &padding on SSH2 RSA signatures",
                      IDC_BUGS_RSAPAD2, IDC_BUGD_RSAPAD2, 20);
+           staticddl(&cp, "Chokes on &Diffie-Hellman group exchange",
+                     IDC_BUGS_DHGEX2, IDC_BUGD_DHGEX2, 20);
            endbox(&cp);
        }
     }
@@ -1994,10 +2060,9 @@ static void create_controls(HWND hwnd, int dlgtype, int panel)
                      "Add new forwarded port:", IDC_PFWDSTATIC2,
                      "&Source port", IDC_SPORTSTATIC, IDC_SPORTEDIT,
                      "Dest&ination", IDC_DPORTSTATIC, IDC_DPORTEDIT,
-                     "A&dd", IDC_PFWDADD);
-           bareradioline(&cp, 2,
-                         "&Local", IDC_PFWDLOCAL,
-                         "Re&mote", IDC_PFWDREMOTE, NULL);
+                     "A&dd", IDC_PFWDADD,
+                     "&Local", IDC_PFWDLOCAL,
+                     "Re&mote", IDC_PFWDREMOTE);
            endbox(&cp);
 
        }
@@ -2018,11 +2083,11 @@ static int load_selected_session(HWND hwnd)
        MessageBeep(0);
        return 0;
     }
-    isdef = !strcmp(sessions[n], "Default Settings");
-    load_settings(sessions[n], !isdef, &cfg);
+    isdef = !strcmp(sesslist.sessions[n], "Default Settings");
+    load_settings(sesslist.sessions[n], !isdef, &cfg);
     init_dlg_ctrls(hwnd, TRUE);
     if (!isdef)
-       SetDlgItemText(hwnd, IDC_SESSEDIT, sessions[n]);
+       SetDlgItemText(hwnd, IDC_SESSEDIT, sesslist.sessions[n]);
     else
        SetDlgItemText(hwnd, IDC_SESSEDIT, "");
     /* Restore the selection, which will have been clobbered by
@@ -2372,20 +2437,20 @@ static int GenericMainDlgProc(HWND hwnd, UINT msg,
                            MessageBeep(0);
                            break;
                        }
-                       strcpy(str, sessions[n]);
+                       strcpy(str, sesslist.sessions[n]);
                    }
                    save_settings(str, !!strcmp(str, "Default Settings"),
                                  &cfg);
-                   get_sesslist(FALSE);
-                   get_sesslist(TRUE);
+                   get_sesslist(&sesslist, FALSE);
+                   get_sesslist(&sesslist, TRUE);
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, WM_SETREDRAW,
                                       FALSE, 0);
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_RESETCONTENT,
                                       0, 0);
-                   for (i = 0; i < nsessions; i++)
+                   for (i = 0; i < sesslist.nsessions; i++)
                        SendDlgItemMessage(hwnd, IDC_SESSLIST,
                                           LB_ADDSTRING, 0,
-                                          (LPARAM) (sessions[i]));
+                                          (LPARAM) (sesslist.sessions[i]));
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_SETCURSEL,
                                       (WPARAM) - 1, 0);
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, WM_SETREDRAW,
@@ -2431,17 +2496,17 @@ static int GenericMainDlgProc(HWND hwnd, UINT msg,
                        MessageBeep(0);
                        break;
                    }
-                   del_settings(sessions[n]);
-                   get_sesslist(FALSE);
-                   get_sesslist(TRUE);
+                   del_settings(sesslist.sessions[n]);
+                   get_sesslist(&sesslist, FALSE);
+                   get_sesslist(&sesslist, TRUE);
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, WM_SETREDRAW,
                                       FALSE, 0);
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_RESETCONTENT,
                                       0, 0);
-                   for (i = 0; i < nsessions; i++)
+                   for (i = 0; i < sesslist.nsessions; i++)
                        SendDlgItemMessage(hwnd, IDC_SESSLIST,
                                           LB_ADDSTRING, 0,
-                                          (LPARAM) (sessions[i]));
+                                          (LPARAM) (sesslist.sessions[i]));
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, LB_SETCURSEL,
                                       (WPARAM) - 1, 0);
                    SendDlgItemMessage(hwnd, IDC_SESSLIST, WM_SETREDRAW,
@@ -2981,6 +3046,23 @@ static int GenericMainDlgProc(HWND hwnd, UINT msg,
                        IsDlgButtonChecked(hwnd, IDC_PROXYSOCKSVER4) ? 4 : 5;
                }
                break;
+             case IDC_PROXYLOCALHOST:
+               if (HIWORD(wParam) == BN_CLICKED ||
+                   HIWORD(wParam) == BN_DOUBLECLICKED)
+                   cfg.even_proxy_localhost =
+                   IsDlgButtonChecked(hwnd, IDC_PROXYLOCALHOST);
+               break;
+             case IDC_PROXYDNSNO:
+             case IDC_PROXYDNSAUTO:
+             case IDC_PROXYDNSYES:
+               if (HIWORD(wParam) == BN_CLICKED ||
+                   HIWORD(wParam) == BN_DOUBLECLICKED) {
+                   cfg.proxy_dns =
+                       IsDlgButtonChecked(hwnd, IDC_PROXYDNSNO) ? PROXYDNS_NO :
+                       IsDlgButtonChecked(hwnd, IDC_PROXYDNSYES) ? PROXYDNS_YES :
+                       PROXYDNS_AUTO;
+               }
+               break;
              case IDC_PROXYTYPENONE:
              case IDC_PROXYTYPEHTTP:
              case IDC_PROXYTYPESOCKS:
@@ -3585,6 +3667,14 @@ static int GenericMainDlgProc(HWND hwnd, UINT msg,
                                          index == 1 ? BUG_OFF : BUG_ON);
                }
                break;
+             case IDC_BUGD_DHGEX2:
+               if (HIWORD(wParam) == CBN_SELCHANGE) {
+                   int index = SendDlgItemMessage(hwnd, IDC_BUGD_DHGEX2,
+                                                  CB_GETCURSEL, 0, 0);
+                   cfg.sshbug_dhgex2 = (index == 0 ? BUG_AUTO :
+                                        index == 1 ? BUG_OFF : BUG_ON);
+               }
+               break;
            }
        return 0;
       case WM_HELP:
@@ -3677,11 +3767,11 @@ int do_config(void)
 {
     int ret;
 
-    get_sesslist(TRUE);
+    get_sesslist(&sesslist, TRUE);
     savedsession[0] = '\0';
     ret =
        DialogBox(hinst, MAKEINTRESOURCE(IDD_MAINBOX), NULL, MainDlgProc);
-    get_sesslist(FALSE);
+    get_sesslist(&sesslist, FALSE);
 
     return ret;
 }
@@ -3700,12 +3790,12 @@ int do_reconfig(HWND hwnd)
     return ret;
 }
 
-void logevent(char *string)
+void logevent(void *frontend, char *string)
 {
     char timebuf[40];
     time_t t;
 
-    log_eventlog(string);
+    log_eventlog(logctx, string);
 
     if (nevents >= negsize) {
        negsize += 64;
@@ -3744,7 +3834,7 @@ void showabout(HWND hwnd)
     DialogBox(hinst, MAKEINTRESOURCE(IDD_ABOUTBOX), hwnd, AboutProc);
 }
 
-void verify_ssh_host_key(char *host, int port, char *keytype,
+void verify_ssh_host_key(void *frontend, char *host, int port, char *keytype,
                         char *keystr, char *fingerprint)
 {
     int ret;
@@ -3820,7 +3910,7 @@ void verify_ssh_host_key(char *host, int port, char *keytype,
  * below the configured 'warn' threshold).
  * cs: 0 = both ways, 1 = client->server, 2 = server->client
  */
-void askcipher(char *ciphername, int cs)
+void askcipher(void *frontend, char *ciphername, int cs)
 {
     static const char mbtitle[] = "PuTTY Security Alert";
     static const char msg[] =
@@ -3849,7 +3939,7 @@ void askcipher(char *ciphername, int cs)
  * Ask whether to wipe a session log file before writing to it.
  * Returns 2 for wipe, 1 for append, 0 for cancel (don't log).
  */
-int askappend(char *filename)
+int askappend(void *frontend, char *filename)
 {
     static const char mbtitle[] = "PuTTY Log to File";
     static const char msgtemplate[] =
@@ -3878,6 +3968,13 @@ int askappend(char *filename)
 
 /*
  * Warn about the obsolescent key file format.
+ * 
+ * Uniquely among these functions, this one does _not_ expect a
+ * frontend handle. This means that if PuTTY is ported to a
+ * platform which requires frontend handles, this function will be
+ * an anomaly. Fortunately, the problem it addresses will not have
+ * been present on that platform, so it can plausibly be
+ * implemented as an empty function.
  */
 void old_keyfile_warning(void)
 {