mirror of https://github.com/djcb/mu.git
195 lines
4.0 KiB
C
195 lines
4.0 KiB
C
/*
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** Copyright (C) 2010 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#define _XOPEN_SOURCE
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#include <wordexp.h> /* for shell-style globbing */
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <glib/gstdio.h>
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#include <errno.h>
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#include "mu-util.h"
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char*
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mu_util_dir_expand (const char *path)
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{
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wordexp_t wexp;
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char *dir;
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int rv;
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g_return_val_if_fail (path, NULL);
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dir = NULL;
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rv = wordexp (path, &wexp, 0);
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if (rv != 0) {
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g_debug ("%s: expansion failed for '%s' [%d]",
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__FUNCTION__, path, rv);
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return NULL;
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} else if (wexp.we_wordc != 1) {
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g_debug ("%s: expansion ambiguous for '%s'",
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__FUNCTION__, path);
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} else
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dir = g_strdup (wexp.we_wordv[0]);
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/* strangely, below seems to load to a crash on MacOS (BSD);
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so we have to allow for a tiny leak here on that
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platform... maybe instead of __APPLE__ it should be
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__BSD__?*/
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#ifndef __APPLE__
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wordfree (&wexp);
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#endif /*__APPLE__*/
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return dir;
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}
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gboolean
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mu_util_check_dir (const gchar* path, gboolean readable, gboolean writeable)
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{
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mode_t mode;
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struct stat statbuf;
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if (!path)
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return FALSE;
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mode = F_OK | (readable ? R_OK : 0) | (writeable ? W_OK : 0);
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if (access (path, mode) != 0) {
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g_debug ("Cannot access %s: %s", path, strerror (errno));
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return FALSE;
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}
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if (stat (path, &statbuf) != 0) {
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g_debug ("Cannot stat %s: %s", path, strerror (errno));
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return FALSE;
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}
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return S_ISDIR(statbuf.st_mode) ? TRUE: FALSE;
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}
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gchar*
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mu_util_guess_maildir (void)
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{
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const gchar *mdir1;
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gchar *mdir2;
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/* first, try MAILDIR */
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mdir1 = g_getenv ("MAILDIR");
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if (mdir1 && mu_util_check_dir (mdir1, TRUE, FALSE))
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return g_strdup (mdir1);
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/* then, try ~/Maildir */
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mdir2 = mu_util_dir_expand ("~/Maildir");
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if (mu_util_check_dir (mdir2, TRUE, FALSE))
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return mdir2;
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/* nope; nothing found */
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return NULL;
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}
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gboolean
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mu_util_create_dir_maybe (const gchar *path)
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{
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struct stat statbuf;
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g_return_val_if_fail (path, FALSE);
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/* if it exists, it must be a readable dir */
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if (stat (path, &statbuf) == 0) {
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if ((!S_ISDIR(statbuf.st_mode)) ||
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(access (path, W_OK|R_OK) != 0)) {
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g_warning ("Not a rw-directory: %s", path);
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return FALSE;
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}
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}
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if (g_mkdir_with_parents (path, 0700) != 0) {
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g_warning ("failed to create %s: %s",
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path, strerror(errno));
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return FALSE;
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}
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return TRUE;
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}
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gchar*
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mu_util_str_from_strv (const gchar **params)
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{
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GString *str;
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int i;
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g_return_val_if_fail (params, NULL);
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if (!params[0])
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return g_strdup ("");
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str = g_string_sized_new (64); /* just a guess */
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for (i = 0; params[i]; ++i) {
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if (i>0)
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g_string_append_c (str, ' ');
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g_string_append (str, params[i]);
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}
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return g_string_free (str, FALSE);
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}
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int
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mu_util_create_writeable_file (const char* filename, const char* dir, gboolean overwrite)
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{
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int fd;
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char *fullpath;
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errno = 0; /* clear! */
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g_return_val_if_fail (filename, -1);
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fullpath = g_strdup_printf ("%s%s%s",
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dir ? dir : "",
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dir ? G_DIR_SEPARATOR_S : "",
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filename);
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if (overwrite)
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fd = open (fullpath, O_WRONLY|O_CREAT|O_TRUNC, 0644);
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else
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fd = open (fullpath, O_WRONLY|O_CREAT, 0644);
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if (fd < 0)
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g_debug ("%s: cannot open %s for writing: %s",
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__FUNCTION__, fullpath, strerror(errno));
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g_free (fullpath);
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return fd;
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}
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