mirror of https://github.com/djcb/mu.git
lib: Update mu-maildir for modern times
Update the good-old mu-maildir to be a bit more... modern.
This commit is contained in:
parent
1db70c05e6
commit
abd2a4a8f1
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@ -1,5 +1,5 @@
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/*
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** Copyright (C) 2008-2020 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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** Copyright (C) 2008-2022 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 it
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** under the terms of the GNU General Public License as published by the
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@ -19,6 +19,8 @@
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#include "config.h"
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#include <optional>
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#include <string>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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@ -30,8 +32,11 @@
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#include <glib/gprintf.h>
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#include <gio/gio.h>
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#include "glibconfig.h"
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#include "mu-maildir.hh"
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#include "utils/mu-str.h"
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#include "mu-message-flags.hh"
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#include "utils/mu-utils.hh"
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#include "utils/mu-util.h"
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using namespace Mu;
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@ -45,7 +50,7 @@ using namespace Mu;
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* and return it in the d_type parameter
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*/
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static unsigned char
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get_dtype(struct dirent* dentry, const char* path, gboolean use_lstat)
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get_dtype(struct dirent* dentry, const std::string& path, bool use_lstat)
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{
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#ifdef HAVE_STRUCT_DIRENT_D_TYPE
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@ -58,612 +63,505 @@ get_dtype(struct dirent* dentry, const char* path, gboolean use_lstat)
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slowpath:
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#endif /*HAVE_STRUCT_DIRENT_D_TYPE*/
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return mu_util_get_dtype(path, use_lstat);
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return mu_util_get_dtype(path.c_str(), use_lstat);
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}
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static gboolean
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create_maildir(const char* path, mode_t mode, GError** err)
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static Mu::Result<void>
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create_maildir(const std::string& path, mode_t mode)
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{
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int i;
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const char* subdirs[] = {"new", "cur", "tmp"};
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std::array<std::string,3> subdirs = {"new", "cur", "tmp"};
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for (auto&& subdir: subdirs) {
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for (i = 0; i != G_N_ELEMENTS(subdirs); ++i) {
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const char* fullpath;
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int rv;
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/* static buffer */
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fullpath = mu_str_fullpath_s(path, subdirs[i]);
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const auto fullpath{path + G_DIR_SEPARATOR_S + subdir};
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/* if subdir already exists, don't try to re-create
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* it */
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if (mu_util_check_dir(fullpath, TRUE, TRUE))
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if (mu_util_check_dir(fullpath.c_str(), TRUE, TRUE))
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continue;
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rv = g_mkdir_with_parents(fullpath, (int)mode);
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int rv{g_mkdir_with_parents(fullpath.c_str(), static_cast<int>(mode))};
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/* note, g_mkdir_with_parents won't detect an error if
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* there's already such a dir, but with the wrong
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* permissions; so we need to check */
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if (rv != 0 || !mu_util_check_dir(fullpath, TRUE, TRUE))
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return mu_util_g_set_error(err,
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MU_ERROR_FILE_CANNOT_MKDIR,
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if (rv != 0 || !mu_util_check_dir(fullpath.c_str(), TRUE, TRUE))
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return Err(Error{Error::Code::File,
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"creating dir failed for %s: %s",
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fullpath,
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g_strerror(errno));
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fullpath.c_str(), g_strerror(errno)});
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}
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return TRUE;
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return Ok();
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}
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static gboolean
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create_noindex(const char* path, GError** err)
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static Mu::Result<void> /* create a noindex file if requested */
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create_noindex(const std::string& path)
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{
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/* create a noindex file if requested */
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int fd;
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const char* noindexpath;
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const auto noindexpath{path + G_DIR_SEPARATOR_S MU_MAILDIR_NOINDEX_FILE};
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/* static buffer */
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noindexpath = mu_str_fullpath_s(path, MU_MAILDIR_NOINDEX_FILE);
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fd = creat(noindexpath, 0644);
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/* note, if the 'close' failed, creation may still have
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* succeeded...*/
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if (fd < 0 || close(fd) != 0)
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return mu_util_g_set_error(err,
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MU_ERROR_FILE_CANNOT_CREATE,
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"error in create_noindex: %s",
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g_strerror(errno));
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return TRUE;
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/* note, if the 'close' failed, creation may still have succeeded...*/
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int fd = ::creat(noindexpath.c_str(), 0644);
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if (fd < 0 || ::close(fd) != 0)
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return Err(Error{Error::Code::File,
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"error creating .noindex: %s", g_strerror(errno)});
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else
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return Ok();
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}
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gboolean
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Mu::mu_maildir_mkdir(const char* path, mode_t mode, gboolean noindex, GError** err)
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Mu::Result<void>
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Mu::mu_maildir_mkdir(const std::string& path, mode_t mode, bool noindex)
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{
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g_return_val_if_fail(path, FALSE);
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if (auto&& created{create_maildir(path, mode)}; !created)
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return created; // fail.
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else if (!noindex)
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return Ok();
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if (!create_maildir(path, mode, err))
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return FALSE;
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if (auto&& created{create_noindex(path)}; !created)
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return created; //fail
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if (noindex && !create_noindex(path, err))
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return FALSE;
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return TRUE;
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return Ok();
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}
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/* determine whether the source message is in 'new' or in 'cur';
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* we ignore messages in 'tmp' for obvious reasons */
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static gboolean
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check_subdir(const char* src, gboolean* in_cur, GError** err)
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static Mu::Result<void>
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check_subdir(const std::string& src, bool& in_cur)
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{
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gboolean rv;
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char* srcpath;
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srcpath = g_path_get_dirname(src);
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*in_cur = FALSE;
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rv = TRUE;
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char *srcpath{g_path_get_dirname(src.c_str())};
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bool invalid{};
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if (g_str_has_suffix(srcpath, "cur"))
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*in_cur = TRUE;
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else if (!g_str_has_suffix(srcpath, "new"))
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rv = mu_util_g_set_error(err,
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MU_ERROR_FILE_INVALID_SOURCE,
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"invalid source message '%s'",
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src);
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in_cur = true;
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else if (g_str_has_suffix(srcpath, "new"))
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in_cur = false;
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else
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invalid = true;
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g_free(srcpath);
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return rv;
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if (invalid)
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return Err(Error{Error::Code::File, "invalid source message '%s'",
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src.c_str()});
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else
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return Ok();
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}
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static char*
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get_target_fullpath(const char* src, const char* targetpath, GError** err)
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static Mu::Result<std::string>
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get_target_fullpath(const std::string& src, const std::string& targetpath)
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{
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char * targetfullpath, *srcfile;
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gboolean in_cur;
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bool in_cur{};
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if (auto&& res = check_subdir(src, in_cur); !res)
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return Err(std::move(res.error()));
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if (!check_subdir(src, &in_cur, err))
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return NULL;
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char *srcfile{g_path_get_basename(src.c_str())};
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srcfile = g_path_get_basename(src);
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/* create targetpath; note: make the filename *cough* unique
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* by including a hash of the srcname in the targetname. This
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* helps if there are copies of a message (which all have the
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* same basename)
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/* create targetpath; note: make the filename *cough* unique by
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* including a hash of the srcname in the targetname. This helps if
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* there are copies of a message (which all have the same basename)
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*/
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targetfullpath = g_strdup_printf("%s%c%s%c%u_%s",
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targetpath,
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auto targetfullpath = format("%s%c%s%c%u_%s",
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targetpath.c_str(),
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G_DIR_SEPARATOR, in_cur ? "cur" : "new",
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G_DIR_SEPARATOR,
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in_cur ? "cur" : "new",
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G_DIR_SEPARATOR,
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g_str_hash(src),
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g_str_hash(src.c_str()),
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srcfile);
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g_free(srcfile);
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return targetfullpath;
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}
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gboolean
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Mu::mu_maildir_link(const char* src, const char* targetpath, GError** err)
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Result<void>
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Mu::mu_maildir_link(const std::string& src, const std::string& targetpath)
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{
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char* targetfullpath;
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int rv;
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g_return_val_if_fail(src, FALSE);
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g_return_val_if_fail(targetpath, FALSE);
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targetfullpath = get_target_fullpath(src, targetpath, err);
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if (!targetfullpath)
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return FALSE;
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rv = symlink(src, targetfullpath);
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auto path_res{get_target_fullpath(src, targetpath)};
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if (!path_res)
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return Err(std::move(path_res.error()));
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auto rv{::symlink(src.c_str(), path_res->c_str())};
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if (rv != 0)
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mu_util_g_set_error(err,
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MU_ERROR_FILE_CANNOT_LINK,
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return Err(Error{Error::Code::File,
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"error creating link %s => %s: %s",
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targetfullpath,
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src,
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g_strerror(errno));
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g_free(targetfullpath);
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path_res->c_str(),
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src.c_str(),
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g_strerror(errno)});
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return rv == 0 ? TRUE : FALSE;
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return Ok();
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}
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/*
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* determine if path is a maildir leaf-dir; ie. if it's 'cur' or 'new'
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* (we're skipping 'tmp' for obvious reasons)
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*/
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gboolean
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Mu::mu_maildir_is_leaf_dir(const char* path)
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static bool
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clear_links(const std::string& path, DIR* dir)
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{
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size_t len;
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/* path is the full path; it cannot possibly be shorter
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* than 4 for a maildir (/cur or /new) */
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len = path ? strlen(path) : 0;
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if (G_UNLIKELY(len < 4))
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return FALSE;
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/* optimization; one further idea would be cast the 4 bytes to an
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* integer and compare that -- need to think about alignment,
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* endianness */
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if (path[len - 4] == G_DIR_SEPARATOR && path[len - 3] == 'c' && path[len - 2] == 'u' &&
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path[len - 1] == 'r')
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return TRUE;
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if (path[len - 4] == G_DIR_SEPARATOR && path[len - 3] == 'n' && path[len - 2] == 'e' &&
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path[len - 1] == 'w')
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return TRUE;
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return FALSE;
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}
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static gboolean
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clear_links(const char* path, DIR* dir)
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{
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gboolean rv;
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bool res;
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struct dirent* dentry;
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rv = TRUE;
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res = true;
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errno = 0;
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while ((dentry = readdir(dir))) {
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guint8 d_type;
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char* fullpath;
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while ((dentry = ::readdir(dir))) {
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if (dentry->d_name[0] == '.')
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continue; /* ignore .,.. other dotdirs */
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fullpath = g_build_path("/", path, dentry->d_name, NULL);
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d_type = get_dtype(dentry, fullpath, TRUE /*lstat*/);
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if (d_type == DT_LNK) {
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if (unlink(fullpath) != 0) {
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g_warning("error unlinking %s: %s", fullpath, g_strerror(errno));
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rv = FALSE;
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const auto fullpath{
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format("%s" G_DIR_SEPARATOR_S "%s",path.c_str(), dentry->d_name)};
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const auto d_type = get_dtype(dentry, fullpath.c_str(), true/*lstat*/);
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switch(d_type) {
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case DT_LNK:
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if (::unlink(fullpath.c_str()) != 0) {
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g_warning("error unlinking %s: %s",
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fullpath.c_str(), g_strerror(errno));
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res = false;
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}
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} else if (d_type == DT_DIR) {
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DIR* subdir;
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subdir = opendir(fullpath);
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break;
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case DT_DIR: {
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DIR* subdir{::opendir(fullpath.c_str())};
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if (!subdir) {
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g_warning("failed to open dir %s: %s", fullpath, g_strerror(errno));
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rv = FALSE;
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goto next;
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}
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if (!clear_links(fullpath, subdir))
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rv = FALSE;
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closedir(subdir);
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}
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next:
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g_free(fullpath);
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}
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return rv;
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}
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gboolean
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Mu::mu_maildir_clear_links(const char* path, GError** err)
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{
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DIR* dir;
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gboolean rv;
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g_return_val_if_fail(path, FALSE);
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dir = opendir(path);
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if (!dir) {
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g_set_error(err,
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MU_ERROR_DOMAIN,
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MU_ERROR_FILE_CANNOT_OPEN,
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"failed to open %s: %s",
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path,
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g_warning("failed to open dir %s: %s", fullpath.c_str(),
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g_strerror(errno));
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return FALSE;
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res = false;
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}
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if (!clear_links(fullpath, subdir))
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res = false;
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::closedir(subdir);
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}
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break;
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default:
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break;
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}
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}
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rv = clear_links(path, dir);
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closedir(dir);
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return rv;
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return res;
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}
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MuFlags
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Mu::mu_maildir_get_flags_from_path(const char* path)
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Mu::Result<void>
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Mu::mu_maildir_clear_links(const std::string& path)
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{
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g_return_val_if_fail(path, MU_FLAG_INVALID);
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const auto dir{::opendir(path.c_str())};
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if (!dir)
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return Err(Error{Error::Code::File, "failed to open %s: %s",
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path.c_str(), g_strerror(errno)});
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/* try to find the info part */
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/* note that we can use either the ':', ';', or '!' as separator;
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* the former is the official, but as it does not work on e.g. VFAT
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* file systems, some Maildir implementations use the latter instead
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* (or both). For example, Tinymail/modest does this. The python
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* documentation at http://docs.python.org/lib/mailbox-maildir.html
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* mentions the '!' as well as a 'popular choice'. Isync uses ';' by
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* default on Windows.
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*/
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clear_links(path, dir);
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::closedir(dir);
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/* we check the dir -- */
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if (strstr(path, G_DIR_SEPARATOR_S "new" G_DIR_SEPARATOR_S)) {
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char * dir, *dir2;
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MuFlags flags;
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dir = g_path_get_dirname(path);
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dir2 = g_path_get_basename(dir);
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flags = MU_FLAG_NONE;
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if (g_strcmp0(dir2, "new") == 0)
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flags = MU_FLAG_NEW;
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g_free(dir);
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g_free(dir2);
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/* NOTE: new/ message should not have :2,-stuff, as
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* per http://cr.yp.to/proto/maildir.html. If they, do
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* we ignore it
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*/
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if (flags == MU_FLAG_NEW)
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return flags;
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return Ok();
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}
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/* get the file flags */
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{
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const char* info;
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info = strrchr(path, '2');
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if (!info || info == path ||
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(info[-1] != ':' && info[-1] != '!' && info[-1] != ';') || (info[1] != ','))
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return MU_FLAG_NONE;
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else
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return mu_flags_from_str(&info[2],
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MU_FLAG_TYPE_MAILFILE,
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TRUE /*ignore invalid */);
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}
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}
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/*
|
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* take an existing message path, and return a new path, based on
|
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* whether it should be in 'new' or 'cur'; ie.
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*
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* /home/user/Maildir/foo/bar/cur/abc:2,F and flags == MU_FLAG_NEW
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* => /home/user/Maildir/foo/bar/new
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* and
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* /home/user/Maildir/foo/bar/new/abc and flags == MU_FLAG_REPLIED
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* => /home/user/Maildir/foo/bar/cur
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*
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* so the difference is whether MU_FLAG_NEW is set or not; and in the
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* latter case, no other flags are allowed.
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*
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* The file-components, ie.
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* 1631819685.fb7b279bbb0a7b66.evergrey:2,RS
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||||
* => {
|
||||
* "1631819685.fb7b279bbb0a7b66.evergrey",
|
||||
* ':',
|
||||
* "2,",
|
||||
* "RS"
|
||||
* }
|
||||
*/
|
||||
static char*
|
||||
get_new_path(const char* mdir,
|
||||
const char* mfile,
|
||||
MuFlags flags,
|
||||
const char* custom_flags,
|
||||
char flags_sep)
|
||||
struct FileParts {
|
||||
std::string base;
|
||||
char separator;
|
||||
std::string flags_suffix;;
|
||||
};
|
||||
|
||||
static FileParts
|
||||
message_file_parts(const std::string& file)
|
||||
{
|
||||
if (flags & MU_FLAG_NEW)
|
||||
return g_strdup_printf("%s%cnew%c%s",
|
||||
mdir,
|
||||
G_DIR_SEPARATOR,
|
||||
G_DIR_SEPARATOR,
|
||||
mfile);
|
||||
else {
|
||||
const char* flagstr;
|
||||
flagstr = mu_flags_to_str_s(flags, MU_FLAG_TYPE_MAILFILE);
|
||||
const auto pos{file.find_last_of(":!;")};
|
||||
|
||||
return g_strdup_printf("%s%ccur%c%s%c2,%s%s",
|
||||
mdir,
|
||||
G_DIR_SEPARATOR,
|
||||
G_DIR_SEPARATOR,
|
||||
mfile,
|
||||
flags_sep,
|
||||
flagstr,
|
||||
custom_flags ? custom_flags : "");
|
||||
}
|
||||
/* no suffix at all? */
|
||||
if (pos == std::string::npos ||
|
||||
pos >= file.length() - 3 ||
|
||||
file[pos + 1] != '2' ||
|
||||
file[pos + 2] != ',')
|
||||
return FileParts{ file, ':', {}};
|
||||
|
||||
return FileParts {
|
||||
file.substr(0, pos),
|
||||
file[pos],
|
||||
file.substr(pos + 3)
|
||||
};
|
||||
}
|
||||
|
||||
char*
|
||||
Mu::mu_maildir_get_maildir_from_path(const char* path)
|
||||
struct DirFile {
|
||||
std::string dir;
|
||||
std::string file;
|
||||
bool is_new;
|
||||
};
|
||||
|
||||
static Result<DirFile>
|
||||
base_message_dir_file(const std::string& path)
|
||||
{
|
||||
char* mdir;
|
||||
constexpr auto newdir{ G_DIR_SEPARATOR_S "new"};
|
||||
|
||||
/* determine the maildir */
|
||||
mdir = g_path_get_dirname(path);
|
||||
if (!g_str_has_suffix(mdir, "cur") &&
|
||||
char *dirname{g_path_get_dirname(path.c_str())};
|
||||
bool is_new{!!g_str_has_suffix(dirname, newdir)};
|
||||
|
||||
!g_str_has_suffix(mdir, "new")) {
|
||||
g_warning("%s: not a valid maildir path: %s", __func__, path);
|
||||
g_free(mdir);
|
||||
return NULL;
|
||||
std::string mdir{dirname, ::strlen(dirname) - 4};
|
||||
g_free(dirname);
|
||||
|
||||
char *basename{g_path_get_basename(path.c_str())};
|
||||
std::string bname{basename};
|
||||
g_free(basename);
|
||||
|
||||
return Ok(DirFile{std::move(mdir), std::move(bname), is_new});
|
||||
}
|
||||
|
||||
/* remove the 'cur' or 'new' */
|
||||
mdir[strlen(mdir) - 4] = '\0';
|
||||
|
||||
return mdir;
|
||||
|
||||
|
||||
Mu::Result<Mu::MessageFlags>
|
||||
Mu::mu_maildir_flags_from_path(const std::string& path)
|
||||
{ /*
|
||||
* this gets us the source maildir filesystem path, the directory
|
||||
* in which new/ & cur/ lives, and the source file
|
||||
*/
|
||||
auto dirfile{base_message_dir_file(path)};
|
||||
if (!dirfile)
|
||||
return Err(std::move(dirfile.error()));
|
||||
|
||||
/* a message under new/ is just.. New. Filename is not considered */
|
||||
if (dirfile->is_new)
|
||||
return Ok(MessageFlags::New);
|
||||
|
||||
/* it's cur/ message, so parse the file name */
|
||||
const auto parts{message_file_parts(dirfile->file)};
|
||||
auto flags{message_flags_from_absolute_expr(parts.flags_suffix,
|
||||
true/*ignore invalid*/)};
|
||||
if (!flags)
|
||||
return Err(Error{Error::Code::InvalidArgument,
|
||||
"invalid flags ('%s')", parts.flags_suffix.c_str()});
|
||||
else
|
||||
return Ok(std::move(flags.value()));
|
||||
}
|
||||
|
||||
static char*
|
||||
get_new_basename(void)
|
||||
{
|
||||
return g_strdup_printf("%u.%08x%08x.%s",
|
||||
(guint)time(NULL),
|
||||
g_random_int(),
|
||||
(gint32)g_get_monotonic_time(),
|
||||
g_get_host_name());
|
||||
}
|
||||
|
||||
static char*
|
||||
find_path_separator(const char* path)
|
||||
{
|
||||
const char* cur;
|
||||
for (cur = &path[strlen(path) - 1]; cur > path; --cur) {
|
||||
if ((*cur == ':' || *cur == '!' || *cur == ';') &&
|
||||
(cur[1] == '2' && cur[2] == ',')) {
|
||||
return (char*)cur;
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
char*
|
||||
Mu::mu_maildir_get_new_path(const char* oldpath,
|
||||
const char* new_mdir,
|
||||
MuFlags newflags,
|
||||
gboolean new_name)
|
||||
{
|
||||
char *mfile, *mdir, *custom_flags, *cur, *newpath, flags_sep = ':';
|
||||
|
||||
g_return_val_if_fail(oldpath, NULL);
|
||||
|
||||
mfile = newpath = custom_flags = NULL;
|
||||
|
||||
/* determine the maildir */
|
||||
mdir = mu_maildir_get_maildir_from_path(oldpath);
|
||||
if (!mdir)
|
||||
return NULL;
|
||||
|
||||
/* determine the name of the location of the flag separator */
|
||||
|
||||
if (new_name) {
|
||||
mfile = get_new_basename();
|
||||
cur = find_path_separator(oldpath);
|
||||
if (cur) {
|
||||
/* preserve the existing flags separator
|
||||
* in the new file name */
|
||||
flags_sep = *cur;
|
||||
}
|
||||
} else {
|
||||
mfile = g_path_get_basename(oldpath);
|
||||
cur = find_path_separator(mfile);
|
||||
if (cur) {
|
||||
/* get the custom flags (if any) */
|
||||
custom_flags = mu_flags_custom_from_str(cur + 3);
|
||||
/* preserve the existing flags separator
|
||||
* in the new file name */
|
||||
flags_sep = *cur;
|
||||
cur[0] = '\0'; /* strip the flags */
|
||||
}
|
||||
}
|
||||
|
||||
newpath =
|
||||
get_new_path(new_mdir ? new_mdir : mdir, mfile, newflags, custom_flags, flags_sep);
|
||||
g_free(mfile);
|
||||
g_free(mdir);
|
||||
g_free(custom_flags);
|
||||
|
||||
return newpath;
|
||||
}
|
||||
|
||||
static gint64
|
||||
get_file_size(const char* path)
|
||||
static size_t
|
||||
get_file_size(const std::string& path)
|
||||
{
|
||||
int rv;
|
||||
struct stat statbuf;
|
||||
|
||||
rv = stat(path, &statbuf);
|
||||
rv = ::stat(path.c_str(), &statbuf);
|
||||
if (rv != 0) {
|
||||
/* g_warning ("error: %s", g_strerror (errno)); */
|
||||
return -1;
|
||||
}
|
||||
|
||||
return (gint64)statbuf.st_size;
|
||||
return static_cast<size_t>(statbuf.st_size);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
msg_move_check_pre(const char* src, const char* dst, GError** err)
|
||||
static Mu::Result<void>
|
||||
msg_move_check_pre(const std::string& src, const std::string& dst)
|
||||
{
|
||||
gint size1, size2;
|
||||
if (::access(src.c_str(), R_OK) != 0)
|
||||
return Err(Error{Error::Code::File, "cannot read %s", src.c_str()});
|
||||
|
||||
if (!g_path_is_absolute(src))
|
||||
return mu_util_g_set_error(err,
|
||||
MU_ERROR_FILE,
|
||||
"source is not an absolute path: '%s'",
|
||||
src);
|
||||
|
||||
if (!g_path_is_absolute(dst))
|
||||
return mu_util_g_set_error(err,
|
||||
MU_ERROR_FILE,
|
||||
"target is not an absolute path: '%s'",
|
||||
dst);
|
||||
|
||||
if (access(src, R_OK) != 0)
|
||||
return mu_util_g_set_error(err, MU_ERROR_FILE, "cannot read %s", src);
|
||||
|
||||
if (access(dst, F_OK) != 0)
|
||||
return TRUE;
|
||||
if (::access(dst.c_str(), F_OK) != 0)
|
||||
return Ok();
|
||||
|
||||
/* target exist; we simply overwrite it, unless target has a different
|
||||
* size. ignore the exceedingly rare case where have duplicate message
|
||||
* file names with different content yet the same length. (md5 etc. is a
|
||||
* bit slow) */
|
||||
size1 = get_file_size(src);
|
||||
size2 = get_file_size(dst);
|
||||
if (size1 != size2)
|
||||
return mu_util_g_set_error(err, MU_ERROR_FILE, "%s already exists", dst);
|
||||
if (get_file_size(src) != get_file_size(dst))
|
||||
return Err(Error{Error::Code::File, "%s already exists", dst.c_str()});
|
||||
|
||||
return TRUE;
|
||||
return Ok();
|
||||
}
|
||||
|
||||
static gboolean
|
||||
msg_move_check_post(const char* src, const char* dst, GError** err)
|
||||
static Mu::Result<void>
|
||||
msg_move_check_post(const std::string& src, const std::string& dst)
|
||||
{
|
||||
/* double check -- is the target really there? */
|
||||
if (access(dst, F_OK) != 0)
|
||||
return mu_util_g_set_error(err,
|
||||
MU_ERROR_FILE,
|
||||
if (::access(dst.c_str(), F_OK) != 0)
|
||||
return Err(Error{Error::Code::File,
|
||||
"can't find target (%s->%s)",
|
||||
src,
|
||||
dst);
|
||||
src.c_str(), dst.c_str()});
|
||||
|
||||
if (access(src, F_OK) == 0) {
|
||||
if (g_strcmp0(src, dst) == 0) {
|
||||
g_warning("moved %s to itself", src);
|
||||
return TRUE;
|
||||
if (::access(src.c_str(), F_OK) == 0) {
|
||||
if (src == dst) {
|
||||
g_warning("moved %s to itself", src.c_str());
|
||||
}
|
||||
|
||||
/* this could happen if some other tool (for mail syncing) is
|
||||
* interfering */
|
||||
g_debug("the source is still there (%s->%s)", src, dst);
|
||||
g_debug("the source is still there (%s->%s)", src.c_str(), dst.c_str());
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
return Ok();
|
||||
}
|
||||
|
||||
/* use GIO to move files; this is slower than rename() so only use
|
||||
* this when needed: when moving across filesystems */
|
||||
static gboolean
|
||||
msg_move_g_file(const char* src, const char* dst, GError** err)
|
||||
static Mu::Result<void>
|
||||
msg_move_g_file(const std::string& src, const std::string& dst)
|
||||
{
|
||||
GFile * srcfile, *dstfile;
|
||||
gboolean res;
|
||||
GFile *srcfile{g_file_new_for_path(src.c_str())};
|
||||
GFile *dstfile{g_file_new_for_path(dst.c_str())};
|
||||
|
||||
srcfile = g_file_new_for_path(src);
|
||||
dstfile = g_file_new_for_path(dst);
|
||||
|
||||
res = g_file_move(srcfile, dstfile, G_FILE_COPY_NONE, NULL, NULL, NULL, err);
|
||||
GError* err{};
|
||||
auto res = g_file_move(srcfile, dstfile, G_FILE_COPY_NONE,
|
||||
NULL, NULL, NULL, &err);
|
||||
|
||||
g_clear_object(&srcfile);
|
||||
g_clear_object(&dstfile);
|
||||
|
||||
return res;
|
||||
if (res)
|
||||
return Ok();
|
||||
else
|
||||
return Err(Error{Error::Code::File, &err,
|
||||
"error moving %s -> %s",
|
||||
src.c_str(), dst.c_str()});
|
||||
}
|
||||
|
||||
static gboolean
|
||||
msg_move(const char* src, const char* dst, GError** err)
|
||||
static Mu::Result<void>
|
||||
msg_move(const std::string& src, const std::string& dst)
|
||||
{
|
||||
if (!msg_move_check_pre(src, dst, err))
|
||||
return FALSE;
|
||||
if (auto&& res = msg_move_check_pre(src, dst); !res)
|
||||
return res;
|
||||
|
||||
if (rename(src, dst) == 0) /* seems it worked. */
|
||||
return msg_move_check_post(src, dst, err);
|
||||
if (::rename(src.c_str(), dst.c_str()) == 0) /* seems it worked; double-check */
|
||||
return msg_move_check_post(src, dst);
|
||||
|
||||
if (errno != EXDEV) /* some unrecoverable error occurred */
|
||||
return mu_util_g_set_error(err, MU_ERROR_FILE, "error moving %s -> %s", src, dst);
|
||||
return Err(Error{Error::Code::File, "error moving %s -> %s",
|
||||
src.c_str(), dst.c_str()});
|
||||
|
||||
/* he EXDEV case -- source and target live on different filesystems */
|
||||
return msg_move_g_file(src, dst, err);
|
||||
/* the EXDEV case -- source and target live on different filesystems */
|
||||
return msg_move_g_file(src, dst);
|
||||
}
|
||||
|
||||
char*
|
||||
Mu::mu_maildir_move_message(const char* oldpath,
|
||||
const char* targetmdir,
|
||||
MuFlags newflags,
|
||||
gboolean ignore_dups,
|
||||
gboolean new_name,
|
||||
GError** err)
|
||||
|
||||
Mu::Result<void>
|
||||
Mu::mu_maildir_move_message(const std::string& oldpath,
|
||||
const std::string& newpath,
|
||||
bool ignore_dups)
|
||||
{
|
||||
char* newfullpath;
|
||||
gboolean rv;
|
||||
gboolean src_is_target;
|
||||
|
||||
g_return_val_if_fail(oldpath, FALSE);
|
||||
|
||||
/* first try *without* changing the name (as per new_name), since
|
||||
* src_is_target shouldn't use a changed name */
|
||||
newfullpath = mu_maildir_get_new_path(oldpath, targetmdir, newflags, FALSE);
|
||||
if (!newfullpath) {
|
||||
mu_util_g_set_error(err, MU_ERROR_FILE, "failed to determine targetpath");
|
||||
return NULL;
|
||||
if (oldpath == newpath) {
|
||||
if (ignore_dups)
|
||||
return Ok();
|
||||
else
|
||||
return Err(Error{Error::Code::InvalidArgument,
|
||||
"target equals source"});
|
||||
}
|
||||
|
||||
src_is_target = (g_strcmp0(oldpath, newfullpath) == 0);
|
||||
if (!ignore_dups && src_is_target) {
|
||||
mu_util_g_set_error(err,
|
||||
MU_ERROR_FILE_TARGET_EQUALS_SOURCE,
|
||||
"target equals source");
|
||||
return NULL;
|
||||
g_debug("moving %s --> %s", oldpath.c_str(), newpath.c_str());
|
||||
return msg_move(oldpath, newpath);
|
||||
}
|
||||
|
||||
/* if we generated file is not the same (modulo flags), create a fully
|
||||
* new name in the new_name case */
|
||||
if (!src_is_target && new_name) {
|
||||
g_free(newfullpath);
|
||||
newfullpath = mu_maildir_get_new_path(oldpath, targetmdir, newflags, new_name);
|
||||
if (!newfullpath) {
|
||||
mu_util_g_set_error(err, MU_ERROR_FILE, "failed to determine targetpath");
|
||||
return NULL;
|
||||
}
|
||||
static std::string
|
||||
reinvent_filename_base()
|
||||
{
|
||||
return format("%u.%08x%08x.%s",
|
||||
static_cast<unsigned>(::time(NULL)),
|
||||
g_random_int(),
|
||||
static_cast<uint32_t>(g_get_monotonic_time()),
|
||||
g_get_host_name());
|
||||
}
|
||||
|
||||
if (!src_is_target) {
|
||||
g_debug("moving %s (%s, %x, %d) --> %s",
|
||||
oldpath,
|
||||
targetmdir,
|
||||
newflags,
|
||||
new_name,
|
||||
newfullpath);
|
||||
rv = msg_move(oldpath, newfullpath, err);
|
||||
if (!rv) {
|
||||
g_free(newfullpath);
|
||||
return NULL;
|
||||
}
|
||||
/**
|
||||
* Determine the destination filename
|
||||
*
|
||||
* @param file a filename
|
||||
* @param flags flags for the destination
|
||||
* @param new_name whether to change the basename
|
||||
*
|
||||
* @return the destion filename.
|
||||
*/
|
||||
static std::string
|
||||
determine_dst_filename(const std::string& file, MessageFlags flags,
|
||||
bool new_name)
|
||||
{
|
||||
/* Recalculate a unique new base file name */
|
||||
auto&& parts{message_file_parts(file)};
|
||||
if (new_name)
|
||||
parts.base = reinvent_filename_base();
|
||||
|
||||
/* for a New message, there are no flags etc.; so we only return the
|
||||
* name sans suffix */
|
||||
if (any_of(flags & MessageFlags::New))
|
||||
return std::move(parts.base);
|
||||
|
||||
const auto flagstr{
|
||||
message_flags_to_string(
|
||||
message_flags_filter(
|
||||
flags, MessageFlagCategory::Mailfile))};
|
||||
|
||||
return parts.base + parts.separator + "2," + flagstr;
|
||||
}
|
||||
|
||||
return newfullpath;
|
||||
|
||||
/*
|
||||
* sanity checks
|
||||
*/
|
||||
static Mu::Result<void>
|
||||
check_determine_target_params (const std::string& old_path,
|
||||
const std::string& root_maildir_path,
|
||||
const std::string& target_maildir,
|
||||
MessageFlags newflags)
|
||||
{
|
||||
if (!g_path_is_absolute(old_path.c_str()))
|
||||
return Err(Error{Error::Code::File,
|
||||
"old_path is not absolute (%s)", old_path.c_str()});
|
||||
|
||||
if (!g_path_is_absolute(root_maildir_path.c_str()))
|
||||
return Err(Error{Error::Code::File,
|
||||
"root maildir path is not absolute",
|
||||
root_maildir_path.c_str()});
|
||||
|
||||
if (!target_maildir.empty() && target_maildir[0] != '/')
|
||||
return Err(Error{Error::Code::File,
|
||||
"target maildir must be empty or start with / (%s)",
|
||||
target_maildir.c_str()});
|
||||
|
||||
if (old_path.find(root_maildir_path) != 0)
|
||||
return Err(Error{Error::Code::File,
|
||||
"old-path must be below root-maildir (%s) (%s)",
|
||||
old_path.c_str(), root_maildir_path.c_str()});
|
||||
|
||||
if (any_of(newflags & MessageFlags::New) && newflags != MessageFlags::New)
|
||||
return Err(Error{Error::Code::File,
|
||||
"if ::New is specified, "
|
||||
"it must be the only flag"});
|
||||
return Ok();
|
||||
}
|
||||
|
||||
|
||||
Mu::Result<std::string>
|
||||
Mu::mu_maildir_determine_target(const std::string& old_path,
|
||||
const std::string& root_maildir_path,
|
||||
const std::string& target_maildir,
|
||||
MessageFlags newflags,
|
||||
bool new_name)
|
||||
{
|
||||
/* sanity checks */
|
||||
if (const auto checked{check_determine_target_params(
|
||||
old_path, root_maildir_path, target_maildir, newflags)}; !checked)
|
||||
return Err(Error{std::move(checked.error())});
|
||||
|
||||
/*
|
||||
* this gets us the source maildir filesystem path, the directory
|
||||
* in which new/ & cur/ lives, and the source file
|
||||
*/
|
||||
const auto src{base_message_dir_file(old_path)};
|
||||
if (!src)
|
||||
return Err(src.error());
|
||||
const auto& [src_mdir, src_file, is_new] = *src;
|
||||
|
||||
/* if target_mdir is empty, we use the src_dir does not change
|
||||
* (though cur/ maybe become new or vice-versa) */
|
||||
const auto dst_mdir{target_maildir.empty() ? src_mdir :
|
||||
root_maildir_path + target_maildir};
|
||||
|
||||
/* now calculate the message name (incl. its immediate parent dir) */
|
||||
const auto dst_file{determine_dst_filename(src_file, newflags, new_name)};
|
||||
|
||||
/* and the complete path name. */
|
||||
const auto subdir = std::invoke([&]()->std::string {
|
||||
if (none_of(newflags & MessageFlags::New))
|
||||
return "cur";
|
||||
else
|
||||
return "new";
|
||||
});
|
||||
|
||||
return dst_mdir + G_DIR_SEPARATOR_S + subdir + G_DIR_SEPARATOR_S + dst_file;
|
||||
}
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
** Copyright (C) 2008-2020 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
|
||||
** Copyright (C) 2008-2022 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
|
||||
**
|
||||
** This program is free software; you can redistribute it and/or modify it
|
||||
** under the terms of the GNU General Public License as published by the
|
||||
|
@ -20,106 +20,68 @@
|
|||
#ifndef MU_MAILDIR_HH__
|
||||
#define MU_MAILDIR_HH__
|
||||
|
||||
#include <string>
|
||||
#include <optional>
|
||||
#include <utils/mu-result.hh>
|
||||
|
||||
#include <glib.h>
|
||||
#include <time.h>
|
||||
#include <sys/types.h> /* for mode_t */
|
||||
#include <utils/mu-util.h>
|
||||
#include <mu-flags.hh>
|
||||
#include <mu-message-flags.hh>
|
||||
|
||||
namespace Mu {
|
||||
|
||||
/**
|
||||
* create a new maildir. if parts of the maildir already exists, those
|
||||
* will simply be ignored. IOW, if you try to create the same maildir
|
||||
* twice, the second will simply be a no-op (without any errors).
|
||||
* Note, if the function fails 'halfway', it will *not* try to remove
|
||||
* the parts the were created. it *will* create any parent dirs that
|
||||
* are not yet existent.
|
||||
* Create a new maildir. if parts of the maildir already exists, those will
|
||||
* simply be ignored.
|
||||
*
|
||||
* IOW, if you try to create the same maildir twice, the second will simply be a
|
||||
* no-op (without any errors). Note, if the function fails 'halfway', it will
|
||||
* *not* try to remove the parts the were created. it *will* create any parent
|
||||
* dirs that are not yet existent.
|
||||
*
|
||||
* @param path the path (missing components will be created, as in 'mkdir -p')
|
||||
* @param mode the file mode (e.g., 0755)
|
||||
* @param noindex add a .noindex file to the maildir, so it will be excluded
|
||||
* from indexing by 'mu index'
|
||||
* @param err if function returns FALSE, receives error
|
||||
* information. err may be NULL.
|
||||
*
|
||||
* @return TRUE if creation succeeded (or already existed), FALSE otherwise
|
||||
* @return a valid result (!!result) or an Error
|
||||
*/
|
||||
gboolean mu_maildir_mkdir(const char* path, mode_t mode, gboolean noindex, GError** err);
|
||||
Result<void> mu_maildir_mkdir(const std::string& path, mode_t mode, bool noindex);
|
||||
|
||||
/**
|
||||
* create a symbolic link to a mail message
|
||||
* Create a symbolic link to a mail message
|
||||
*
|
||||
* @param src the full path to the source message
|
||||
* @param targetpath the path to the target maildir; ie., *not*
|
||||
* MyMaildir/cur, but just MyMaildir/. The function will figure out
|
||||
* the correct subdir then.
|
||||
* @param err if function returns FALSE, err may contain extra
|
||||
* information. if err is NULL, does nothing
|
||||
*
|
||||
* @return
|
||||
* @return a valid result (!!result) or an Error
|
||||
*/
|
||||
gboolean mu_maildir_link(const char* src, const char* targetpath, GError** err);
|
||||
Result<void> mu_maildir_link(const std::string& src, const std::string& targetpath);
|
||||
|
||||
/**
|
||||
* recursively delete all the symbolic links in a directory tree
|
||||
* Recursively delete all the symbolic links in a directory tree
|
||||
*
|
||||
* @param dir top dir
|
||||
* @param err if function returns FALSE, err may contain extra
|
||||
* information. if err is NULL, does nothing
|
||||
*
|
||||
* @return TRUE if it worked, FALSE in case of error
|
||||
* @return a valid result (!!result) or an Error
|
||||
*/
|
||||
gboolean mu_maildir_clear_links(const char* dir, GError** err);
|
||||
Result<void> mu_maildir_clear_links(const std::string& dir);
|
||||
|
||||
/**
|
||||
* whether the directory path ends in '/cur/' or '/new/'
|
||||
*
|
||||
* @param path some path
|
||||
*/
|
||||
gboolean mu_maildir_is_leaf_dir(const char* path);
|
||||
|
||||
/**
|
||||
* get the Maildir flags from the full path of a mailfile. The flags
|
||||
* are as specified in http://cr.yp.to/proto/maildir.html, plus
|
||||
* MU_MSG_FLAG_NEW for new messages, ie the ones that live in
|
||||
* new/. The flags are logically OR'ed. Note that the file does not
|
||||
* have to exist; the flags are based on the path only.
|
||||
* Get the Maildir flags from the full path of a mailfile. The flags are as
|
||||
* specified in http://cr.yp.to/proto/maildir.html, plus MU_MSG_FLAG_NEW for new
|
||||
* messages, ie the ones that live in new/. The flags are logically OR'ed. Note
|
||||
* that the file does not have to exist; the flags are based on the path only.
|
||||
*
|
||||
* @param pathname of a mailfile; it does not have to refer to an
|
||||
* actual message
|
||||
*
|
||||
* @return the flags, or MU_MSG_FILE_FLAG_UNKNOWN in case of error
|
||||
* @return the message flags or an error
|
||||
*/
|
||||
MuFlags mu_maildir_get_flags_from_path(const char* pathname);
|
||||
|
||||
/**
|
||||
* get the new pathname for a message, based on the old path and the
|
||||
* new flags and (optionally) a new maildir. Note that
|
||||
* setting/removing the MU_FLAG_NEW will change the directory in which
|
||||
* a message lives. The flags are as specified in
|
||||
* http://cr.yp.to/proto/maildir.html, plus MU_FLAG_NEW for new
|
||||
* messages, ie the ones that live in new/. The flags are logically
|
||||
* OR'ed. Note that the file does not have to exist; the flags are
|
||||
* based on the path only.
|
||||
*
|
||||
*
|
||||
* @param oldpath the old (current) full path to the message
|
||||
* (including the filename)
|
||||
* @param new_mdir the new maildir for this message, or NULL to keep
|
||||
* it in the current one. The maildir is the absolute file system
|
||||
* path, without the 'cur' or 'new'
|
||||
* @param new_flags the new flags for this message
|
||||
* @param new_name whether to create a new unique name, or keep the
|
||||
* old one
|
||||
*
|
||||
* @return a new path name; use g_free when done with. NULL in case of
|
||||
* error.
|
||||
*/
|
||||
char* mu_maildir_get_new_path(const char* oldpath,
|
||||
const char* new_mdir,
|
||||
MuFlags new_flags,
|
||||
gboolean new_name) G_GNUC_WARN_UNUSED_RESULT;
|
||||
Result<MessageFlags> mu_maildir_flags_from_path(const std::string& pathname);
|
||||
|
||||
/**
|
||||
* get the maildir for a certain message path, ie, the path *before*
|
||||
|
@ -127,38 +89,54 @@ char* mu_maildir_get_new_path(const char* oldpath,
|
|||
*
|
||||
* @param path path for some message
|
||||
*
|
||||
* @return the maildir (free with g_free), or NULL in case of error
|
||||
* @return the maildir or an Error
|
||||
*/
|
||||
char* mu_maildir_get_maildir_from_path(const char* path) G_GNUC_WARN_UNUSED_RESULT;
|
||||
Result<std::string> mu_maildir_from_path(const std::string& path);
|
||||
|
||||
/**
|
||||
* move a message file to another maildir; the function returns the full path to
|
||||
* the new message. if the target file already exists, it is overwritten.
|
||||
* Move a message file to another maildir. If the target file already exists, it
|
||||
* is overwritten.
|
||||
*
|
||||
* @param msgpath an absolute file system path to an existing message in an
|
||||
* @param oldpath an absolute file system path to an existing message in an
|
||||
* actual maildir
|
||||
* @param targetmdir the target maildir; note that this the base-level
|
||||
* Maildir, ie. /home/user/Maildir/archive, and must _not_ include the
|
||||
* 'cur' or 'new' part. Note that the target maildir must be on the
|
||||
* same filesystem. If you specify NULL for targetmdir, only the flags
|
||||
* of the message are affected; note that this may still involve a
|
||||
* moved to another directory (say, from new/ to cur/)
|
||||
* @param flags to set for the target (influences the filename, path)
|
||||
* @param ignore_dups whether to silently ignore the src=target case
|
||||
* (and return TRUE)
|
||||
* @param new_name whether to create a new unique name, or keep the
|
||||
* old one
|
||||
* @param newpath the absolete full path to the target file
|
||||
* @param ignore_dups whether to silently ignore the src==target case
|
||||
* (and return @true)
|
||||
* @param err receives error information
|
||||
*
|
||||
* @return return the full path name of the target file (g_free) if
|
||||
* the move succeeded, NULL otherwise
|
||||
* @return * @return a valid result (!!result) or an Error
|
||||
*/
|
||||
char* mu_maildir_move_message(const char* oldpath,
|
||||
const char* targetmdir,
|
||||
MuFlags newflags,
|
||||
gboolean ignore_dups,
|
||||
gboolean new_name,
|
||||
GError** err) G_GNUC_WARN_UNUSED_RESULT;
|
||||
Result<void> mu_maildir_move_message(const std::string& oldpath,
|
||||
const std::string& targetmdir,
|
||||
bool ignore_dups);
|
||||
|
||||
/**
|
||||
* Determine the target path for a to-be-moved message; i.e. this does not
|
||||
* actually move the message, only calculate the path.
|
||||
*
|
||||
* @param old_path an absolute file system path to an existing message in an
|
||||
* actual maildir
|
||||
* @param root_maildir_path the absolete file system path under which
|
||||
* all maidlirs live.
|
||||
* @param target_maildir the target maildir; note that this the base-level
|
||||
* Maildir, ie. /home/user/Maildir/archive, and must _not_ include the
|
||||
* 'cur' or 'new' part. Note that the target maildir must be on the
|
||||
* same filesystem. Can be empty if the message should not be moved to
|
||||
* a different maildir; note that this may still involve a
|
||||
* move to another directory (say, from new/ to cur/)
|
||||
* @param flags to set for the target (influences the filename, path).
|
||||
* @param new_name whether to change the basename of the file
|
||||
* @param err receives error information
|
||||
*
|
||||
* @return Full path name of the target file or std::nullopt in case
|
||||
* of error
|
||||
*/
|
||||
Result<std::string>
|
||||
mu_maildir_determine_target(const std::string& old_path,
|
||||
const std::string& root_maildir_path,
|
||||
const std::string& target_maildir,
|
||||
MessageFlags newflags,
|
||||
bool new_name);
|
||||
|
||||
} // namespace Mu
|
||||
|
||||
|
|
Loading…
Reference in New Issue