dlg_pgp.c

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#include "config.h"
#include <stdbool.h>
#include <stdio.h>
#include "private.h"
#include "mutt/lib.h"
#include "address/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "lib.h"
#include "expando/lib.h"
#include "key/lib.h"
#include "menu/lib.h"
#include "expando_pgp.h"
#include "module_data.h"
#include "mutt_logging.h"
#include "pgp_functions.h"
#include "pgplib.h"
#include "sort.h"

static const struct Mapping PgpHelp[] = {
  // clang-format off
  { N_("Exit"),      OP_EXIT },
  { N_("Select"),    OP_GENERIC_SELECT_ENTRY },
  { N_("Check key"), OP_VERIFY_KEY },
  { N_("Help"),      OP_HELP },
  { NULL, 0 },
  // clang-format on
};

static int pgp_make_entry(struct Menu *menu, int line, int max_cols, struct Buffer *buf)
{
  struct PgpData *pd = menu->mdata;
  struct PgpUid **puid = ARRAY_GET(pd->key_table, line);
  if (!*puid)
    return 0;
 
  struct PgpEntry entry = { line + 1, *puid };
 
  const bool c_arrow_cursor = cs_subset_bool(menu->sub, "arrow_cursor");
  if (c_arrow_cursor)
  {
    const char *const c_arrow_string = cs_subset_string(menu->sub, "arrow_string");
    if (max_cols > 0)
      max_cols -= (mutt_strwidth(c_arrow_string) + 1);
  }
 
  const struct Expando *c_pgp_entry_format = cs_subset_expando(NeoMutt->sub, "pgp_entry_format");
  return expando_filter(c_pgp_entry_format, PgpEntryRenderCallbacks, &entry,
                        MUTT_FORMAT_ARROWCURSOR, max_cols, NeoMutt->env, buf);
}

static int pgp_key_config_observer(struct NotifyCallback *nc)
{
  if (nc->event_type != NT_CONFIG)
    return 0;
  if (!nc->global_data || !nc->event_data)
    return -1;
 
  struct EventConfig *ev_c = nc->event_data;
 
  if (!mutt_str_equal(ev_c->name, "pgp_entry_format") &&
      !mutt_str_equal(ev_c->name, "pgp_key_sort"))
  {
    return 0;
  }
 
  struct Menu *menu = nc->global_data;
  menu_queue_redraw(menu, MENU_REDRAW_FULL);
  mutt_debug(LL_DEBUG5, "config done, request WA_RECALC, MENU_REDRAW_FULL\n");
 
  return 0;
}

static int pgp_key_window_observer(struct NotifyCallback *nc)
{
  if (nc->event_type != NT_WINDOW)
    return 0;
  if (!nc->global_data || !nc->event_data)
    return -1;
  if (nc->event_subtype != NT_WINDOW_DELETE)
    return 0;
 
  struct MuttWindow *win_menu = nc->global_data;
  struct EventWindow *ev_w = nc->event_data;
  if (ev_w->win != win_menu)
    return 0;
 
  struct Menu *menu = win_menu->wdata;
 
  notify_observer_remove(NeoMutt->sub->notify, pgp_key_config_observer, menu);
  notify_observer_remove(win_menu->notify, pgp_key_window_observer, win_menu);
 
  mutt_debug(LL_DEBUG5, "window delete done\n");
  return 0;
}

struct PgpKeyInfo *dlg_pgp(struct PgpKeyInfo *keys, struct Address *p, const char *s)
{
  struct Menu *menu = NULL;
  char buf[1024] = { 0 };
  bool unusable = false;
  struct PgpUidArray pua = ARRAY_HEAD_INITIALIZER;
 
  const bool c_pgp_show_unusable = cs_subset_bool(NeoMutt->sub, "pgp_show_unusable");
  for (struct PgpKeyInfo *kp = keys; kp; kp = kp->next)
  {
    if (!c_pgp_show_unusable && (kp->flags & KEYFLAG_CANTUSE))
    {
      unusable = true;
      continue;
    }
 
    for (struct PgpUid *a = kp->address; a; a = a->next)
    {
      if (!c_pgp_show_unusable && (a->flags & KEYFLAG_CANTUSE))
      {
        unusable = true;
        continue;
      }
 
      ARRAY_ADD(&pua, a);
    }
  }
 
  if ((ARRAY_SIZE(&pua) == 0) && unusable)
  {
    mutt_error(_("All matching keys are expired, revoked, or disabled"));
    return NULL;
  }
 
  pgp_sort_keys(&pua);
 
  struct NcryptModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_NCRYPT);
  ASSERT(mod_data);
 
  struct SimpleDialogWindows sdw = simple_dialog_new(mod_data->menu_pgp, WT_DLG_PGP, PgpHelp);
  menu = sdw.menu;
  struct PgpData pd = { false, menu, &pua, NULL };
 
  menu->max = ARRAY_SIZE(&pua);
  menu->make_entry = pgp_make_entry;
  menu->mdata = &pd;
  menu->mdata_free = NULL; // Menu doesn't own the data
 
  // NT_COLOR is handled by the SimpleDialog
  notify_observer_add(NeoMutt->sub->notify, NT_CONFIG, pgp_key_config_observer, menu);
  notify_observer_add(menu->win->notify, NT_WINDOW, pgp_key_window_observer, menu->win);
 
  if (p)
    snprintf(buf, sizeof(buf), _("PGP keys matching <%s>"), buf_string(p->mailbox));
  else
    snprintf(buf, sizeof(buf), _("PGP keys matching \"%s\""), s);
 
  sbar_set_title(sdw.sbar, buf);
 
  mutt_clear_error();
 
  struct MuttWindow *old_focus = window_set_focus(menu->win);
  // ---------------------------------------------------------------------------
  // Event Loop
  int op = OP_NULL;
  struct KeyEvent event = { 0, OP_NULL };
  do
  {
    menu_tagging_dispatcher(menu->win, &event);
    window_redraw(NULL);
 
    event = km_dokey(mod_data->menu_pgp, GETCH_NONE);
    op = event.op;
    mutt_debug(LL_DEBUG1, "Got op %s (%d)\n", opcodes_get_name(op), op);
    if (op < 0)
      continue;
    if (op == OP_NULL)
    {
      km_error_key(mod_data->menu_pgp);
      continue;
    }
    mutt_clear_error();
 
    int rc = pgp_function_dispatcher(sdw.dlg, &event);
 
    if (rc == FR_UNKNOWN)
      rc = menu_function_dispatcher(menu->win, &event);
    if (rc == FR_UNKNOWN)
      rc = global_function_dispatcher(menu->win, &event);
  } while (!pd.done);
  // ---------------------------------------------------------------------------
 
  ARRAY_FREE(&pua);
  window_set_focus(old_focus);
  simple_dialog_free(&sdw.dlg);
  return pd.key;
}