sort_gpgme.c

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#include "config.h"
#include <gpgme.h>
#include <locale.h>
#include <stdbool.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "lib.h"
#include "crypt_gpgme.h"
#include "sort.h"

static int crypt_sort_address(const void *a, const void *b, void *sdata)
{
  struct CryptKeyInfo *s = *(struct CryptKeyInfo **) a;
  struct CryptKeyInfo *t = *(struct CryptKeyInfo **) b;
  const bool sort_reverse = *(bool *) sdata;
 
  int rc = mutt_istr_cmp(s->uid, t->uid);
  if (rc != 0)
    goto done;
 
  rc = mutt_istr_cmp(crypt_fpr_or_lkeyid(s), crypt_fpr_or_lkeyid(t));
 
done:
  return sort_reverse ? -rc : rc;
}

static int crypt_sort_keyid(const void *a, const void *b, void *sdata)
{
  struct CryptKeyInfo *s = *(struct CryptKeyInfo **) a;
  struct CryptKeyInfo *t = *(struct CryptKeyInfo **) b;
  const bool sort_reverse = *(bool *) sdata;
 
  int rc = mutt_istr_cmp(crypt_fpr_or_lkeyid(s), crypt_fpr_or_lkeyid(t));
  if (rc != 0)
    goto done;
 
  rc = mutt_istr_cmp(s->uid, t->uid);
 
done:
  return sort_reverse ? -rc : rc;
}

static int crypt_sort_date(const void *a, const void *b, void *sdata)
{
  struct CryptKeyInfo *s = *(struct CryptKeyInfo **) a;
  struct CryptKeyInfo *t = *(struct CryptKeyInfo **) b;
  const bool sort_reverse = *(bool *) sdata;
 
  unsigned long ts = 0;
  unsigned long tt = 0;
  int rc = 0;
 
  if (s->kobj->subkeys && (s->kobj->subkeys->timestamp > 0))
    ts = s->kobj->subkeys->timestamp;
  if (t->kobj->subkeys && (t->kobj->subkeys->timestamp > 0))
    tt = t->kobj->subkeys->timestamp;
 
  if (ts > tt)
  {
    rc = 1;
    goto done;
  }
 
  if (ts < tt)
  {
    rc = -1;
    goto done;
  }
 
  rc = mutt_istr_cmp(s->uid, t->uid);
 
done:
  return sort_reverse ? -rc : rc;
}

static int crypt_sort_trust(const void *a, const void *b, void *sdata)
{
  struct CryptKeyInfo *s = *(struct CryptKeyInfo **) a;
  struct CryptKeyInfo *t = *(struct CryptKeyInfo **) b;
  const bool sort_reverse = *(bool *) sdata;
 
  unsigned long ts = 0;
  unsigned long tt = 0;
 
  int rc = mutt_numeric_cmp(s->flags & KEYFLAG_RESTRICTIONS, t->flags & KEYFLAG_RESTRICTIONS);
  if (rc != 0)
    goto done;
 
  // Note: reversed
  rc = mutt_numeric_cmp(t->validity, s->validity);
  if (rc != 0)
    return rc;
 
  ts = 0;
  tt = 0;
  if (s->kobj->subkeys)
    ts = s->kobj->subkeys->length;
  if (t->kobj->subkeys)
    tt = t->kobj->subkeys->length;
 
  // Note: reversed
  rc = mutt_numeric_cmp(tt, ts);
  if (rc != 0)
    goto done;
 
  ts = 0;
  tt = 0;
  if (s->kobj->subkeys && (s->kobj->subkeys->timestamp > 0))
    ts = s->kobj->subkeys->timestamp;
  if (t->kobj->subkeys && (t->kobj->subkeys->timestamp > 0))
    tt = t->kobj->subkeys->timestamp;
 
  // Note: reversed
  rc = mutt_numeric_cmp(tt, ts);
  if (rc != 0)
    goto done;
 
  rc = mutt_istr_cmp(s->uid, t->uid);
  if (rc != 0)
    goto done;
 
  rc = mutt_istr_cmp(crypt_fpr_or_lkeyid(s), crypt_fpr_or_lkeyid(t));
 
done:
  return sort_reverse ? -rc : rc;
}

void gpgme_sort_keys(struct CryptKeyInfoArray *ckia)
{
  const short c_pgp_sort_keys = cs_subset_sort(NeoMutt->sub, "pgp_key_sort");
  sort_t fn = NULL;
  switch (c_pgp_sort_keys & SORT_MASK)
  {
    case KEY_SORT_ADDRESS:
      fn = crypt_sort_address;
      break;
    case KEY_SORT_DATE:
      fn = crypt_sort_date;
      break;
    case KEY_SORT_KEYID:
      fn = crypt_sort_keyid;
      break;
    case KEY_SORT_TRUST:
    default:
      fn = crypt_sort_trust;
      break;
  }
 
  if (ARRAY_SIZE(ckia) > 1)
  {
    bool sort_reverse = c_pgp_sort_keys & SORT_REVERSE;
    ARRAY_SORT(ckia, fn, &sort_reverse);
  }
}