mutt_mailbox.c

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#include "config.h"
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <utime.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "mutt_mailbox.h"
#include "muttlib.h"
#include "mx.h"
#include "protos.h"

static time_t MailboxTime = 0; 
static time_t MailboxStatsTime = 0; 
static short MailboxCount = 0;  
static short MailboxNotify = 0; 

static void mailbox_check(struct Mailbox *m_cur, struct Mailbox *m_check,
                          struct stat *ctx_sb, bool check_stats)
{
  struct stat sb = { 0 };

  enum MailboxType mb_type = mx_path_probe(mailbox_path(m_check));

  const bool c_mail_check_recent =
      cs_subset_bool(NeoMutt->sub, "mail_check_recent");
  if ((m_cur == m_check) && c_mail_check_recent)
    m_check->has_new = false;

  switch (mb_type)
  {
    case MUTT_POP:
    case MUTT_NNTP:
    case MUTT_NOTMUCH:
    case MUTT_IMAP:
      m_check->type = mb_type;
      break;
    default:
      if ((stat(mailbox_path(m_check), &sb) != 0) ||
          ((m_check->type == MUTT_UNKNOWN) && S_ISREG(sb.st_mode) && (sb.st_size == 0)) ||
          ((m_check->type == MUTT_UNKNOWN) &&
           ((m_check->type = mx_path_probe(mailbox_path(m_check))) <= 0)))
      {
        /* if the mailbox still doesn't exist, set the newly created flag to be
         * ready for when it does. */
        m_check->newly_created = true;
        m_check->type = MUTT_UNKNOWN;
        m_check->size = 0;
        return;
      }
      break; // kept for consistency.
  }

  const bool c_check_mbox_size =
      cs_subset_bool(NeoMutt->sub, "check_mbox_size");
  /* check to see if the folder is the currently selected folder before polling */
  if (!m_cur || mutt_buffer_is_empty(&m_cur->pathbuf) ||
      (((m_check->type == MUTT_IMAP) || (m_check->type == MUTT_NNTP) ||
        (m_check->type == MUTT_NOTMUCH) || (m_check->type == MUTT_POP)) ?
           !mutt_str_equal(mailbox_path(m_check), mailbox_path(m_cur)) :
           ((sb.st_dev != ctx_sb->st_dev) || (sb.st_ino != ctx_sb->st_ino))))
  {
    switch (m_check->type)
    {
      case MUTT_IMAP:
      case MUTT_MBOX:
      case MUTT_MMDF:
      case MUTT_MAILDIR:
      case MUTT_MH:
      case MUTT_NOTMUCH:
        if ((mx_mbox_check_stats(m_check, check_stats) != MX_STATUS_ERROR) &&
            m_check->has_new)
        {
          MailboxCount++;
        }
        break;
      default:; /* do nothing */
    }
  }
  else if (c_check_mbox_size && m_cur && mutt_buffer_is_empty(&m_cur->pathbuf))
    m_check->size = (off_t) sb.st_size; /* update the size of current folder */

  if (!m_check->has_new)
    m_check->notified = false;
  else if (!m_check->notified)
    MailboxNotify++;
}

int mutt_mailbox_check(struct Mailbox *m_cur, int force)
{
  struct stat ctx_st;
  time_t t;
  bool check_stats = false;
  ctx_st.st_dev = 0;
  ctx_st.st_ino = 0;

#ifdef USE_IMAP
  /* update postponed count as well, on force */
  if (force & MUTT_MAILBOX_CHECK_FORCE)
    mutt_update_num_postponed();
#endif

  /* fastest return if there are no mailboxes */
  if (TAILQ_EMPTY(&NeoMutt->accounts))
    return 0;

  const short c_mail_check = cs_subset_number(NeoMutt->sub, "mail_check");
  const bool c_mail_check_stats =
      cs_subset_bool(NeoMutt->sub, "mail_check_stats");
  const short c_mail_check_stats_interval =
      cs_subset_number(NeoMutt->sub, "mail_check_stats_interval");

  t = mutt_date_epoch();
  if (!force && (t - MailboxTime < c_mail_check))
    return MailboxCount;

  if ((force & MUTT_MAILBOX_CHECK_FORCE_STATS) ||
      (c_mail_check_stats && ((t - MailboxStatsTime) >= c_mail_check_stats_interval)))
  {
    check_stats = true;
    MailboxStatsTime = t;
  }

  MailboxTime = t;
  MailboxCount = 0;
  MailboxNotify = 0;

  /* check device ID and serial number instead of comparing paths */
  if (!m_cur || (m_cur->type == MUTT_IMAP) || (m_cur->type == MUTT_POP)
#ifdef USE_NNTP
      || (m_cur->type == MUTT_NNTP)
#endif
      || stat(mailbox_path(m_cur), &ctx_st) != 0)
  {
    ctx_st.st_dev = 0;
    ctx_st.st_ino = 0;
  }

  struct MailboxList ml = STAILQ_HEAD_INITIALIZER(ml);
  neomutt_mailboxlist_get_all(&ml, NeoMutt, MUTT_MAILBOX_ANY);
  struct MailboxNode *np = NULL;
  STAILQ_FOREACH(np, &ml, entries)
  {
    if (np->mailbox->flags & MB_HIDDEN)
      continue;

    mailbox_check(m_cur, np->mailbox, &ctx_st,
                  check_stats || (!np->mailbox->first_check_stats_done && c_mail_check_stats));
    np->mailbox->first_check_stats_done = true;
  }
  neomutt_mailboxlist_clear(&ml);

  return MailboxCount;
}

bool mutt_mailbox_notify(struct Mailbox *m_cur)
{
  if ((mutt_mailbox_check(m_cur, 0) > 0) && MailboxNotify)
  {
    return mutt_mailbox_list();
  }
  return false;
}

bool mutt_mailbox_list(void)
{
  char mailboxlist[512];
  size_t pos = 0;
  int first = 1;

  int have_unnotified = MailboxNotify;

  struct Buffer *path = mutt_buffer_pool_get();

  mailboxlist[0] = '\0';
  pos += strlen(strncat(mailboxlist, _("New mail in "), sizeof(mailboxlist) - 1 - pos));
  struct MailboxList ml = STAILQ_HEAD_INITIALIZER(ml);
  neomutt_mailboxlist_get_all(&ml, NeoMutt, MUTT_MAILBOX_ANY);
  struct MailboxNode *np = NULL;
  STAILQ_FOREACH(np, &ml, entries)
  {
    /* Is there new mail in this mailbox? */
    if (!np->mailbox->has_new || (have_unnotified && np->mailbox->notified))
      continue;

    mutt_buffer_strcpy(path, mailbox_path(np->mailbox));
    mutt_buffer_pretty_mailbox(path);

    const size_t width = msgwin_get_width();
    if (!first && (width >= 7) && ((pos + mutt_buffer_len(path)) >= (width - 7)))
    {
      break;
    }

    if (!first)
      pos += strlen(strncat(mailboxlist + pos, ", ", sizeof(mailboxlist) - 1 - pos));

    /* Prepend an asterisk to mailboxes not already notified */
    if (!np->mailbox->notified)
    {
      /* pos += strlen (strncat(mailboxlist + pos, "*", sizeof(mailboxlist)-1-pos)); */
      np->mailbox->notified = true;
      MailboxNotify--;
    }
    pos += strlen(strncat(mailboxlist + pos, mutt_buffer_string(path),
                          sizeof(mailboxlist) - 1 - pos));
    first = 0;
  }
  neomutt_mailboxlist_clear(&ml);

  if (!first && np)
  {
    strncat(mailboxlist + pos, ", ...", sizeof(mailboxlist) - 1 - pos);
  }

  mutt_buffer_pool_release(&path);

  if (!first)
  {
    mutt_message("%s", mailboxlist);
    return true;
  }

  /* there were no mailboxes needing to be notified, so clean up since
    * MailboxNotify has somehow gotten out of sync */
  MailboxNotify = 0;
  return false;
}

void mutt_mailbox_set_notified(struct Mailbox *m)
{
  if (!m)
    return;

  m->notified = true;
#ifdef HAVE_CLOCK_GETTIME
  clock_gettime(CLOCK_REALTIME, &m->last_visited);
#else
  m->last_visited.tv_sec = mutt_date_epoch();
  m->last_visited.tv_nsec = 0;
#endif
}

struct Mailbox *mutt_mailbox_next(struct Mailbox *m_cur, struct Buffer *s)
{
  mutt_buffer_expand_path(s);

  if (mutt_mailbox_check(m_cur, 0) > 0)
  {
    bool found = false;
    for (int pass = 0; pass < 2; pass++)
    {
      struct MailboxList ml = STAILQ_HEAD_INITIALIZER(ml);
      neomutt_mailboxlist_get_all(&ml, NeoMutt, MUTT_MAILBOX_ANY);
      struct MailboxNode *np = NULL;
      STAILQ_FOREACH(np, &ml, entries)
      {
        if (np->mailbox->type == MUTT_NOTMUCH) /* only match real mailboxes */
          continue;
        mutt_buffer_expand_path(&np->mailbox->pathbuf);
        if ((found || (pass > 0)) && np->mailbox->has_new)
        {
          mutt_buffer_strcpy(s, mailbox_path(np->mailbox));
          mutt_buffer_pretty_mailbox(s);
          struct Mailbox *m_result = np->mailbox;
          neomutt_mailboxlist_clear(&ml);
          return m_result;
        }
        if (mutt_str_equal(mutt_buffer_string(s), mailbox_path(np->mailbox)))
          found = true;
      }
      neomutt_mailboxlist_clear(&ml);
    }

    mutt_mailbox_check(m_cur, MUTT_MAILBOX_CHECK_FORCE); /* mailbox was wrong - resync things */
  }

  mutt_buffer_reset(s); // no folders with new mail
  return NULL;
}

void mutt_mailbox_cleanup(const char *path, struct stat *st)
{
#ifdef HAVE_UTIMENSAT
  struct timespec ts[2];
#else
  struct utimbuf ut;
#endif

  const bool c_check_mbox_size =
      cs_subset_bool(NeoMutt->sub, "check_mbox_size");
  if (c_check_mbox_size)
  {
    struct Mailbox *m = mailbox_find(path);
    if (m && !m->has_new)
      mailbox_update(m);
  }
  else
  {
    /* fix up the times so mailbox won't get confused */
    if (st->st_mtime > st->st_atime)
    {
#ifdef HAVE_UTIMENSAT
      ts[0].tv_sec = 0;
      ts[0].tv_nsec = UTIME_OMIT;
      ts[1].tv_sec = 0;
      ts[1].tv_nsec = UTIME_NOW;
      utimensat(AT_FDCWD, buf, ts, 0);
#else
      ut.actime = st->st_atime;
      ut.modtime = mutt_date_epoch();
      utime(path, &ut);
#endif
    }
    else
    {
#ifdef HAVE_UTIMENSAT
      ts[0].tv_sec = 0;
      ts[0].tv_nsec = UTIME_NOW;
      ts[1].tv_sec = 0;
      ts[1].tv_nsec = UTIME_NOW;
      utimensat(AT_FDCWD, buf, ts, 0);
#else
      utime(path, NULL);
#endif
    }
  }
}