browse.c

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#include "config.h"
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include "private.h"
#include "mutt/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "conn/lib.h"
#include "gui/lib.h"
#include "lib.h"
#include "browser/lib.h"
#include "editor/lib.h"
#include "history/lib.h"
#include "adata.h"
#include "mdata.h"
#include "mutt_logging.h"
#include "muttlib.h"

static void add_folder(char delim, char *folder, bool noselect, bool noinferiors,
                       struct BrowserState *state, bool isparent)
{
  char tmp[PATH_MAX] = { 0 };
  char relpath[PATH_MAX] = { 0 };
  struct ConnAccount cac = { { 0 } };
  char mailbox[1024] = { 0 };
  struct FolderFile ff = { 0 };
 
  if (imap_parse_path(state->folder, &cac, mailbox, sizeof(mailbox)) != 0)
    return;
 
  if (isparent)
  {
    /* render superiors as unix-standard ".." */
    mutt_str_copy(relpath, "../", sizeof(relpath));
  }
  else if (mutt_str_startswith(folder, mailbox))
  {
    /* strip current folder from target, to render a relative path */
    mutt_str_copy(relpath, folder + mutt_str_len(mailbox), sizeof(relpath));
  }
  else
  {
    mutt_str_copy(relpath, folder, sizeof(relpath));
  }
 
  /* apply filemask filter. This should really be done at menu setup rather
   * than at scan, since it's so expensive to scan. But that's big changes
   * to browser.c */
  const struct Regex *c_mask = cs_subset_regex(NeoMutt->sub, "mask");
  if (!mutt_regex_match(c_mask, relpath))
  {
    return;
  }
 
  imap_qualify_path(tmp, sizeof(tmp), &cac, folder);
  ff.name = mutt_str_dup(tmp);
 
  /* mark desc with delim in browser if it can have subfolders */
  if (!isparent && !noinferiors && (strlen(relpath) < sizeof(relpath) - 1))
  {
    relpath[strlen(relpath) + 1] = '\0';
    relpath[strlen(relpath)] = delim;
  }
 
  ff.desc = mutt_str_dup(relpath);
  ff.imap = true;
 
  /* delimiter at the root is useless. */
  if (folder[0] == '\0')
    delim = '\0';
  ff.delim = delim;
  ff.selectable = !noselect;
  ff.inferiors = !noinferiors;
 
  struct MailboxArray ma = neomutt_mailboxes_get(NeoMutt, MUTT_MAILBOX_ANY);
  struct Mailbox **mp = NULL;
  ARRAY_FOREACH(mp, &ma)
  {
    struct Mailbox *m = *mp;
 
    if (mutt_str_equal(tmp, mailbox_path(m)))
    {
      ff.has_mailbox = true;
      ff.has_new_mail = m->has_new;
      ff.msg_count = m->msg_count;
      ff.msg_unread = m->msg_unread;
      break;
    }
  }
 
  ARRAY_FREE(&ma); // Clean up the ARRAY, but not the Mailboxes
 
  ARRAY_ADD(&state->entry, ff);
}

static int browse_add_list_result(struct ImapAccountData *adata, const char *cmd,
                                  struct BrowserState *bstate, bool isparent)
{
  struct ImapList list = { 0 };
  int rc;
  struct Url *url = url_parse(bstate->folder);
  if (!url)
    return -1;
 
  imap_cmd_start(adata, cmd);
  adata->cmdresult = &list;
  do
  {
    list.name = NULL;
    rc = imap_cmd_step(adata);
 
    if ((rc == IMAP_RES_CONTINUE) && list.name)
    {
      /* Let a parent folder never be selectable for navigation */
      if (isparent)
        list.noselect = true;
      /* prune current folder from output */
      if (isparent || !mutt_str_startswith(url->path, list.name))
        add_folder(list.delim, list.name, list.noselect, list.noinferiors, bstate, isparent);
    }
  } while (rc == IMAP_RES_CONTINUE);
  adata->cmdresult = NULL;
 
  url_free(&url);
 
  return (rc == IMAP_RES_OK) ? 0 : -1;
}

static void browse_build_list_cmd(struct Buffer *buf, const char *list_cmd,
                                  const char *mbox, bool extended)
{
  buf_printf(buf, "%s \"\" %s", list_cmd, mbox);
  if (extended)
    buf_addstr(buf, " RETURN (CHILDREN)");
}

int imap_browse(const char *path, struct BrowserState *state)
{
  struct ImapAccountData *adata = NULL;
  struct ImapList list = { 0 };
  struct ConnAccount cac = { { 0 } };
  char buf[PATH_MAX + 16] = { 0 };
  char mbox[PATH_MAX] = { 0 };
  char munged_mbox[PATH_MAX] = { 0 };
  const char *list_cmd = NULL;
  struct Buffer *cmd = NULL;
  int n;
  bool showparents = false;
  int rc = -1;
 
  if (imap_parse_path(path, &cac, buf, sizeof(buf)) != 0)
  {
    mutt_error(_("%s is an invalid IMAP path"), path);
    return -1;
  }
 
  const bool c_imap_check_subscribed = cs_subset_bool(NeoMutt->sub, "imap_check_subscribed");
  cs_subset_str_native_set(NeoMutt->sub, "imap_check_subscribed", false, NULL);
 
  // Pick first mailbox connected to the same server
  struct MailboxArray ma = neomutt_mailboxes_get(NeoMutt, MUTT_IMAP);
  struct Mailbox **mp = NULL;
  ARRAY_FOREACH(mp, &ma)
  {
    adata = imap_adata_get(*mp);
    // Pick first mailbox connected on the same server
    if (imap_account_match(&adata->conn->account, &cac))
      break;
    adata = NULL;
  }
  ARRAY_FREE(&ma); // Clean up the ARRAY, but not the Mailboxes
 
  if (!adata)
    goto fail;
 
  const bool c_imap_list_subscribed = cs_subset_bool(NeoMutt->sub, "imap_list_subscribed");
  if (c_imap_list_subscribed)
  {
    /* RFC3348 section 3 states LSUB is unreliable for hierarchy information.
     * The newer LIST extensions are designed for this.  */
    if (adata->capabilities & IMAP_CAP_LIST_EXTENDED)
      list_cmd = "LIST (SUBSCRIBED RECURSIVEMATCH)";
    else
      list_cmd = "LSUB";
  }
  else
  {
    list_cmd = "LIST";
  }
 
  mutt_message(_("Getting folder list..."));
 
  cmd = buf_pool_get();
 
  /* skip check for parents when at the root */
  if (buf[0] == '\0')
  {
    mbox[0] = '\0';
    n = 0;
  }
  else
  {
    imap_fix_path_with_delim(adata->delim, buf, mbox, sizeof(mbox));
    n = mutt_str_len(mbox);
  }
 
  if (n > 0)
  {
    int rc_step;
    mutt_debug(LL_DEBUG3, "mbox: %s\n", mbox);
 
    /* if our target exists and has inferiors, enter it if we
     * aren't already going to */
    imap_munge_mbox_name(adata->unicode, munged_mbox, sizeof(munged_mbox), mbox);
    browse_build_list_cmd(cmd, list_cmd, munged_mbox,
                          adata->capabilities & IMAP_CAP_LIST_EXTENDED);
    imap_cmd_start(adata, buf_string(cmd));
    adata->cmdresult = &list;
    do
    {
      list.name = 0;
      rc_step = imap_cmd_step(adata);
      if ((rc_step == IMAP_RES_CONTINUE) && list.name)
      {
        if (!list.noinferiors && list.name[0] &&
            (imap_mxcmp(list.name, mbox) == 0) && (n < sizeof(mbox) - 1))
        {
          mbox[n++] = list.delim;
          mbox[n] = '\0';
        }
      }
    } while (rc_step == IMAP_RES_CONTINUE);
    adata->cmdresult = NULL;
 
    /* if we're descending a folder, mark it as current in browser_state */
    if (mbox[n - 1] == list.delim)
    {
      showparents = true;
      imap_qualify_path(buf, sizeof(buf), &cac, mbox);
      state->folder = mutt_str_dup(buf);
      n--;
    }
 
    /* Find superiors to list
     * Note: UW-IMAP servers return folder + delimiter when asked to list
     *  folder + delimiter. Cyrus servers don't. So we ask for folder,
     *  and tack on delimiter ourselves.
     * Further note: UW-IMAP servers return nothing when asked for
     *  NAMESPACES without delimiters at the end. Argh! */
    for (n--; n >= 0 && mbox[n] != list.delim; n--)
      ; // do nothing
 
    if (n > 0) /* "aaaa/bbbb/" -> "aaaa" */
    {
      /* forget the check, it is too delicate (see above). Have we ever
       * had the parent not exist? */
      char ctmp = mbox[n];
      mbox[n] = '\0';
 
      if (showparents)
      {
        mutt_debug(LL_DEBUG3, "adding parent %s\n", mbox);
        add_folder(list.delim, mbox, true, false, state, true);
      }
 
      /* if our target isn't a folder, we are in our superior */
      if (!state->folder)
      {
        /* store folder with delimiter */
        mbox[n++] = ctmp;
        ctmp = mbox[n];
        mbox[n] = '\0';
        imap_qualify_path(buf, sizeof(buf), &cac, mbox);
        state->folder = mutt_str_dup(buf);
      }
      mbox[n] = ctmp;
    }
    else
    {
      /* "/bbbb/" -> add  "/", "aaaa/" -> add "" */
      char relpath[2] = { 0 };
      /* folder may be "/" */
      snprintf(relpath, sizeof(relpath), "%c", (n < 0) ? '\0' : adata->delim);
      if (showparents)
        add_folder(adata->delim, relpath, true, false, state, true);
      if (!state->folder)
      {
        imap_qualify_path(buf, sizeof(buf), &cac, relpath);
        state->folder = mutt_str_dup(buf);
      }
    }
  }
 
  /* no namespace, no folder: set folder to host only */
  if (!state->folder)
  {
    imap_qualify_path(buf, sizeof(buf), &cac, NULL);
    state->folder = mutt_str_dup(buf);
  }
 
  mutt_debug(LL_DEBUG3, "Quoting mailbox scan: %s -> ", mbox);
  snprintf(buf, sizeof(buf), "%s%%", mbox);
  imap_munge_mbox_name(adata->unicode, munged_mbox, sizeof(munged_mbox), buf);
  mutt_debug(LL_DEBUG3, "%s\n", munged_mbox);
  browse_build_list_cmd(cmd, list_cmd, munged_mbox, adata->capabilities & IMAP_CAP_LIST_EXTENDED);
  if (browse_add_list_result(adata, buf_string(cmd), state, false))
    goto fail;
 
  if (ARRAY_EMPTY(&state->entry))
  {
    // L10N: (%s) is the name / path of the folder we were trying to browse
    mutt_error(_("No such folder: %s"), path);
    goto fail;
  }
 
  mutt_clear_error();
  rc = 0;
 
fail:
  buf_pool_release(&cmd);
  cs_subset_str_native_set(NeoMutt->sub, "imap_check_subscribed",
                           c_imap_check_subscribed, NULL);
  return rc;
}

int imap_mailbox_create(const char *path)
{
  struct ImapAccountData *adata = NULL;
  struct ImapMboxData *mdata = NULL;
  struct Buffer *name = buf_pool_get();
  int rc = -1;
 
  if (imap_adata_find(path, &adata, &mdata) < 0)
  {
    mutt_debug(LL_DEBUG1, "Couldn't find open connection to %s\n", path);
    goto done;
  }
 
  /* append a delimiter if necessary */
  const size_t n = buf_strcpy(name, mdata->real_name);
  if ((n != 0) && (buf_at(name, n - 1) != adata->delim))
  {
    buf_addch(name, adata->delim);
  }
 
  struct FileCompletionData cdata = { false, NULL, NULL, NULL, NULL };
  if (mw_get_field(_("Create mailbox: "), name, MUTT_COMP_NONE, HC_MAILBOX,
                   &CompleteMailboxOps, &cdata) != 0)
  {
    goto done;
  }
 
  if (buf_is_empty(name))
  {
    mutt_error(_("Mailbox must have a name"));
    goto done;
  }
 
  if (imap_create_mailbox(adata, buf_string(name)) < 0)
    goto done;
 
  imap_mdata_free((void *) &mdata);
  mutt_message(_("Mailbox created"));
  mutt_sleep(0);
  rc = 0;
 
done:
  imap_mdata_free((void *) &mdata);
  buf_pool_release(&name);
  return rc;
}

int imap_mailbox_rename(const char *path)
{
  struct ImapAccountData *adata = NULL;
  struct ImapMboxData *mdata = NULL;
  struct Buffer *buf = NULL;
  struct Buffer *newname = NULL;
  int rc = -1;
 
  if (imap_adata_find(path, &adata, &mdata) < 0)
  {
    mutt_debug(LL_DEBUG1, "Couldn't find open connection to %s\n", path);
    goto done;
  }
 
  if (mdata->real_name[0] == '\0')
  {
    mutt_error(_("Can't rename root folder"));
    goto done;
  }
 
  buf = buf_pool_get();
  newname = buf_pool_get();
 
  buf_printf(buf, _("Rename mailbox %s to: "), mdata->name);
  buf_strcpy(newname, mdata->name);
 
  struct FileCompletionData cdata = { false, NULL, NULL, NULL, NULL };
  if (mw_get_field(buf_string(buf), newname, MUTT_COMP_NONE, HC_MAILBOX,
                   &CompleteMailboxOps, &cdata) != 0)
  {
    goto done;
  }
 
  if (buf_is_empty(newname))
  {
    mutt_error(_("Mailbox must have a name"));
    goto done;
  }
 
  imap_fix_path_with_delim(adata->delim, buf_string(newname), buf->data, buf->dsize);
 
  if (imap_rename_mailbox(adata, mdata->name, buf_string(buf)) < 0)
  {
    mutt_error(_("Rename failed: %s"), imap_get_qualifier(adata->buf));
    goto done;
  }
 
  mutt_message(_("Mailbox renamed"));
  mutt_sleep(0);
  rc = 0;
 
done:
  imap_mdata_free((void *) &mdata);
  buf_pool_release(&buf);
  buf_pool_release(&newname);
 
  return rc;
}