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973 lines
26 KiB
C
973 lines
26 KiB
C
/*
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* Generic freedesktop.org support code
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*
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* Copyright (C) 2006 Mikolaj Zalewski
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*
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* XDG_UserDirLookup() and helper functions are based on code from:
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* http://www.freedesktop.org/wiki/Software/xdg-user-dirs
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*
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* Copyright (c) 2007 Red Hat, inc
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*
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* From the xdg-user-dirs license:
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <errno.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "shlwapi.h"
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#include "wine/debug.h"
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#include "shell32_main.h"
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#include "xdg.h"
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WINE_DEFAULT_DEBUG_CHANNEL(xdg);
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/*
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* XDG paths implemented using Desktop Base Directory spec version 0.6
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* (from http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html)
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*/
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static CRITICAL_SECTION XDG_PathsLock;
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static CRITICAL_SECTION_DEBUG XDG_PathsLock_Debug =
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{
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0, 0, &XDG_PathsLock,
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{ &XDG_PathsLock_Debug.ProcessLocksList,
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&XDG_PathsLock_Debug.ProcessLocksList},
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0, 0, { (DWORD_PTR)__FILE__ ": XDG_PathsLock"}
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};
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static CRITICAL_SECTION XDG_PathsLock = { &XDG_PathsLock_Debug, -1, 0, 0, 0, 0 };
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typedef struct
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{
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const char *var_name;
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const char *default_value;
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} std_path;
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static const std_path paths[] = {
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{"XDG_DATA_HOME", "$HOME/.local/share"},
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{"XDG_CONFIG_HOME", "$HOME/.config"},
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{"XDG_DATA_DIRS", "/usr/local/share:/usr/share"},
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{"XDG_CONFIG_DIRS", "/etc/xdg"},
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{"XDG_CACHE_HOME", "$HOME/.cache"}
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};
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#define PATHS_COUNT (sizeof(paths)/sizeof(paths[0]))
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/* will be filled with paths as they are computed */
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static const char *path_values[PATHS_COUNT] = {
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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static char *load_path(int path_id)
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{
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char *env = getenv(paths[path_id].var_name);
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char *ret;
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if (env != NULL && env[0]=='/')
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{
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ret = SHAlloc(strlen(env)+1);
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if (ret != NULL)
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lstrcpyA(ret, env);
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return ret;
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}
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if (memcmp(paths[path_id].default_value, "$HOME", 5)==0)
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{
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char *home = getenv("HOME");
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int len;
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if (!home) return NULL;
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ret = SHAlloc(strlen(home)+strlen(paths[path_id].default_value)-5+1);
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if (ret == NULL) return NULL;
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lstrcpyA(ret, home);
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len = strlen(ret);
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if (len>0 && ret[len-1]=='/')
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ret[--len]=0;
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lstrcatA(ret, paths[path_id].default_value+5);
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return ret;
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}
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ret = SHAlloc(strlen(paths[path_id].default_value)+1);
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if (ret != NULL)
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lstrcpyA(ret, paths[path_id].default_value);
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return ret;
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}
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/******************************************************************************
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* XDG_GetPath [internal]
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*
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* Get one of the XDG standard patch. The return value shouldn't be modified nor
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* freed. A return value of NULL means that the memory is exhausted or the input
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* is invalid
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*
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* For XDG_DATA_HOME, XDG_CONFIG_HOME and XDG_CACHE_HOME the result is a Unix path.
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* For XDG_DATA_DIRS and XDG_CONFIG_DIRS the result is a colon-separated list of Unix
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* paths
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*
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* The paths are guaranteed to start with '/'
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*/
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static const char *XDG_GetPath(int path_id)
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{
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if (path_id >= PATHS_COUNT || path_id < 0)
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{
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ERR("Invalid path_id %d\n", path_id);
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return NULL;
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}
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if (path_values[path_id] != NULL)
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return path_values[path_id];
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EnterCriticalSection(&XDG_PathsLock);
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if (path_values[path_id] == NULL)
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path_values[path_id] = load_path(path_id);
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LeaveCriticalSection(&XDG_PathsLock);
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return path_values[path_id];
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}
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/******************************************************************************
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* XDG_BuildPath [internal]
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*
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* Build a string with a subpath of one of the XDG standard paths.
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* The root can be one of XDG_DATA_HOME, XDG_CONFIG_HOME and XDG_CACHE_HOME.
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* The subpath is a path relative to that root (it shouldn't start with a slash)
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*
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* The returned path should be freed with SHFree. A return of NULL means that the
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* memory is exhausted or the parameters are invalid
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*/
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char *XDG_BuildPath(int root_id, const char *subpath)
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{
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const char *root_path = XDG_GetPath(root_id);
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char *ret_buffer;
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int root_len;
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if (root_id == XDG_DATA_DIRS || root_id == XDG_CONFIG_DIRS)
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{
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ERR("Invalid path id %d\n", root_id);
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return NULL;
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}
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if (root_path == NULL) return NULL;
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root_len = strlen(root_path);
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if (root_path[root_len-1]=='/') root_len--;
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ret_buffer = SHAlloc(root_len+1+strlen(subpath)+1);
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if (ret_buffer == NULL) return NULL;
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lstrcpyA(ret_buffer, root_path);
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ret_buffer[root_len]='/';
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lstrcpyA(ret_buffer+root_len+1, subpath);
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return ret_buffer;
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}
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/******************************************************************************
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* XDG_MakeDirs [internal]
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*
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* Checks that all the directories on the specified path exists. If some don't exists
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* they are created with mask 0700 as required by many the freedeskop.org specs.
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* If the path doesn't end with '/' it is assumed to be a path to a file and the last
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* segment is not checked
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*
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* In case of a failure the errno is always set and can be used e.g for debugging
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*
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* RETURNS
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* TRUE on success, FALSE on error
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*/
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BOOL XDG_MakeDirs(const char *path)
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{
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int last_slash = 0;
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BOOL success = TRUE;
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struct stat tmp;
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char *buffer = SHAlloc(strlen(path)+1);
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if (buffer == NULL)
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{
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errno = ENOMEM;
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return FALSE;
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}
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lstrcpyA(buffer, path);
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TRACE("(%s)\n", debugstr_a(path));
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while (1)
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{
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char *slash=strchr(buffer+last_slash+1, '/');
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if (slash==NULL)
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break;
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/* cut the string at that position and create the directory if it doesn't exist */
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*slash=0;
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TRACE("Checking path %s\n", debugstr_a(buffer));
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success = (stat(buffer, &tmp)==0);
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if (!success && errno==ENOENT)
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{
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TRACE("Creating\n");
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success = (mkdir(buffer, 0700)==0);
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}
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if (!success)
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{
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WARN("Couldn't process directory %s (errno=%d)\n", debugstr_a(buffer), errno);
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break;
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}
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*slash='/';
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last_slash = slash-buffer;
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}
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SHFree(buffer);
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return success;
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}
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/*
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* .desktop files functions
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*/
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/******************************************************************************
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* dskentry_encode [internal]
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*
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* Escape the characters that can't be present in a desktop entry value like \n, leading
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* spaces etc. The output parameter may be NULL. Then only the number of characters will
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* be computers.
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*
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* RETURNS
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* The number of characters after escaping the special characters, including the
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* terminating NUL.
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*/
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static int dskentry_encode(const char *value, char *output)
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{
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int only_spc = TRUE;
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int num_written = 0;
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const char *c;
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for (c = value; *c; c++)
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{
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if (only_spc && *c==' ')
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{
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if (output)
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{
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*(output++) = '\\';
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*(output++) = 's';
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}
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num_written += 2;
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continue;
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}
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only_spc = FALSE;
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if (*c=='\t' || *c=='\r' || *c=='\n' || *c=='\\')
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{
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if (output)
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{
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*(output++) = '\\';
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if (*c=='\t') *(output++) = 't';
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if (*c=='\r') *(output++) = 'r';
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if (*c=='\n') *(output++) = 'n';
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if (*c=='\\') *(output++) = '\\';
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}
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num_written += 2;
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}
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else
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{
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if (output)
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*(output++)=*c;
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num_written++;
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}
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}
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if (output)
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*(output++) = 0;
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num_written++;
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return num_written;
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}
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/******************************************************************************
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* dskentry_decode [internal]
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*
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* Unescape the characters that can be escaped according to the desktop entry spec.
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* The output parameter may be NULL. Then only the number of characters will
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* be computers.
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*
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* RETURNS
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* The number of characters after unescaping the special characters, including the
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* terminating NUL.
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*/
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static int dskentry_decode(const char *value, int len, char *output)
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{
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int pos = 0;
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int count = 0;
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while (pos<len)
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{
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char c;
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if (value[pos] == '\\' && pos<len-1)
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{
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pos++;
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switch (value[pos])
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{
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case 's': c = ' '; break;
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case 'n': c = '\n'; break;
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case 't': c = '\t'; break;
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case 'r': c = 'r'; break;
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case '\\': c = '\\'; break;
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default:
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/* store both the backslash and the character */
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if (output)
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*(output++) = '\\';
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count++;
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c = value[pos];
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break;
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}
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}
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else
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c = value[pos];
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if (output)
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*(output++) = c;
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count++;
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pos++;
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}
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if (output)
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*(output++) = 0;
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count++;
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return count;
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}
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/******************************************************************************
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* url_encode [internal]
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*
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* URL-encode the given string (i.e. use escape codes like %20). Note that an
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* URL-encoded string can be used as a value in desktop entry files as all
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* unsafe characters are escaped.
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*
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* The output can be NULL. Then only the number of characters will be counted
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*
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* RETURNS
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* The number of characters after escaping the special characters, including the
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* terminating NUL.
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*/
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static int url_encode(const char *value, char *output)
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{
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static const char unsafechars[] = "^&`{}|[]'<>\\#%\"+";
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static const char hexchars[] = "0123456789ABCDEF";
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int num_written = 0;
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const char *c;
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for (c = value; *c; c++)
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{
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if (*c<=0x20 || *c>=0x7f || strchr(unsafechars, *c))
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{
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if (output)
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{
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*(output++) = '%';
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*(output++) = hexchars[(unsigned char)*c / 16];
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*(output++) = hexchars[(unsigned char)*c % 16];
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}
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num_written += 3;
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}
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else
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{
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if (output)
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*(output++) = *c;
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num_written++;
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}
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}
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if (output)
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*(output++) = 0;
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num_written++;
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return num_written;
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}
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static int decode_url_code(const char *c)
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{
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const char *p1, *p2;
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int v1, v2;
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static const char hexchars[] = "0123456789ABCDEF";
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if (*c == 0)
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return -1;
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p1 = strchr(hexchars, toupper(*c));
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p2 = strchr(hexchars, toupper(*(c+1)));
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if (p1 == NULL || p2 == NULL)
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return -1;
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v1 = (int)(p1 - hexchars);
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v2 = (int)(p2 - hexchars);
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return (v1<<4) + v2;
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}
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/******************************************************************************
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* url_decode [internal]
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*
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* URL-decode the given string (i.e. unescape codes like %20). The decoded string
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* will never be longer than the encoded one. The decoding can be done in place - the
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* output variable can point to the value buffer.
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*
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* output should not be NULL
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*/
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static void url_decode(const char *value, char *output)
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{
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const char *c = value;
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while (*c)
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{
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if (*c == '%')
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{
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int v = decode_url_code(c+1);
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if (v != -1)
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{
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*(output++) = v;
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c += 3;
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continue;
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}
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}
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*(output++) = *c;
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c++;
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}
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*output = 0;
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}
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static int escape_value(const char *value, DWORD dwFlags, char *output)
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{
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if (dwFlags & XDG_URLENCODE)
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return url_encode(value, output);
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return dskentry_encode(value, output);
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}
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|
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/******************************************************************************
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|
* XDG_WriteDesktopStringEntry [internal]
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|
*
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* Writes a key=value pair into the specified file descriptor.
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|
*
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* RETURNS
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* TRUE on success, else FALSE
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*/
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BOOL XDG_WriteDesktopStringEntry(int writer, const char *keyName, DWORD dwFlags, const char *value)
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{
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int keyLen = lstrlenA(keyName);
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int valueLen = escape_value(value, dwFlags, NULL);
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char *string = SHAlloc(keyLen+1+valueLen);
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BOOL ret;
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|
|
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if (string == NULL)
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return FALSE;
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lstrcpyA(string, keyName);
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|
string[keyLen] = '=';
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escape_value(value, dwFlags, string+keyLen+1);
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|
string[keyLen+1+valueLen-1]='\n'; /* -1 because valueLen contains the last NUL character */
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ret = (write(writer, string, keyLen+1+valueLen)!=-1);
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SHFree(string);
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return ret;
|
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}
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|
|
typedef struct
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|
{
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char *str;
|
|
int len;
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} PARSED_STRING;
|
|
|
|
typedef struct tagPARSED_ENTRY PARSED_ENTRY;
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|
struct tagPARSED_ENTRY
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|
{
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|
PARSED_STRING name;
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|
PARSED_STRING equals;
|
|
PARSED_STRING value;
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|
PARSED_ENTRY *next;
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|
};
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|
|
|
typedef struct tagPARSED_GROUP PARSED_GROUP;
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|
struct tagPARSED_GROUP
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|
{
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|
PARSED_STRING name;
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|
PARSED_ENTRY *entries;
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|
PARSED_GROUP *next;
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|
};
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|
|
|
|
|
struct tagXDG_PARSED_FILE
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|
{
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|
char *contents;
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|
PARSED_ENTRY *head_comments;
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|
PARSED_GROUP *groups;
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|
};
|
|
|
|
static BOOL parsed_str_eq(const PARSED_STRING *str1, const char *str2)
|
|
{
|
|
if (strncmp(str1->str, str2, str1->len) != 0)
|
|
return FALSE;
|
|
if (str2[str1->len] != 0)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static void free_entries_list(PARSED_ENTRY *first)
|
|
{
|
|
PARSED_ENTRY *next;
|
|
while (first)
|
|
{
|
|
next = first->next;
|
|
SHFree(first);
|
|
first = next;
|
|
}
|
|
}
|
|
|
|
void XDG_FreeParsedFile(XDG_PARSED_FILE *parsed)
|
|
{
|
|
PARSED_GROUP *group, *next;
|
|
if (!parsed)
|
|
return;
|
|
free_entries_list(parsed->head_comments);
|
|
|
|
group = parsed->groups;
|
|
while (group)
|
|
{
|
|
next = group->next;
|
|
free_entries_list(group->entries);
|
|
SHFree(group);
|
|
group = next;
|
|
}
|
|
}
|
|
|
|
#define LINE_GROUP 1
|
|
#define LINE_ENTRY 2
|
|
#define LINE_COMMENT 3
|
|
|
|
static int parse_line(char *content, PARSED_ENTRY *output, int *outType)
|
|
{
|
|
char *end;
|
|
|
|
ZeroMemory(output, sizeof(PARSED_ENTRY));
|
|
end = strchr(content, '\n');
|
|
if (end == NULL)
|
|
end = content + strlen(content) - 1;
|
|
|
|
if (*content == '#')
|
|
{
|
|
*outType = LINE_COMMENT;
|
|
output->equals.str = content;
|
|
output->equals.len = end - content;
|
|
if (*end != '\n')
|
|
output->equals.len++;
|
|
}
|
|
else if (*content == '[')
|
|
{
|
|
char *last_char = end;
|
|
|
|
*outType = LINE_GROUP;
|
|
|
|
/* the standard says nothing about skipping white spaces but e.g. KDE accepts such files */
|
|
while (isspace(*last_char))
|
|
last_char--;
|
|
if (*last_char != ']')
|
|
return -1;
|
|
output->name.str = content + 1;
|
|
output->name.len = last_char - (content + 1);
|
|
}
|
|
else
|
|
{
|
|
/* 'name = value' line */
|
|
char *equal, *eq_begin, *eq_end;
|
|
|
|
*outType = LINE_ENTRY;
|
|
|
|
equal = strchr(content, '=');
|
|
if (equal == NULL || equal > end)
|
|
return -1;
|
|
for (eq_begin = equal-1; isspace(*eq_begin) && eq_begin >= content; eq_begin--)
|
|
;
|
|
for (eq_end = equal+1; isspace(*eq_end) && *eq_end != '\n'; eq_end++)
|
|
;
|
|
|
|
output->name.str = content;
|
|
output->name.len = eq_begin - content + 1;
|
|
|
|
output->equals.str = eq_begin + 1;
|
|
output->equals.len = eq_end - eq_begin - 1;
|
|
|
|
output->value.str = eq_end;
|
|
output->value.len = end - eq_end;
|
|
|
|
if (*end != '\n')
|
|
output->value.len++;
|
|
}
|
|
return end - content + 1;
|
|
}
|
|
|
|
XDG_PARSED_FILE *XDG_ParseDesktopFile(int fd)
|
|
{
|
|
struct stat stats;
|
|
XDG_PARSED_FILE *parsed = NULL;
|
|
PARSED_ENTRY **curr_entry;
|
|
PARSED_GROUP **curr_group;
|
|
BOOL is_in_group = FALSE;
|
|
|
|
int pos = 0;
|
|
|
|
if (fstat(fd, &stats) == -1) goto failed;
|
|
parsed = SHAlloc(sizeof(XDG_PARSED_FILE));
|
|
if (parsed == NULL) goto failed;
|
|
parsed->groups = NULL;
|
|
parsed->head_comments = NULL;
|
|
parsed->contents = SHAlloc(stats.st_size+1);
|
|
if (parsed->contents == NULL) goto failed;
|
|
|
|
curr_entry = &parsed->head_comments;
|
|
curr_group = &parsed->groups;
|
|
|
|
if (read(fd, parsed->contents, stats.st_size) == -1) goto failed;
|
|
parsed->contents[stats.st_size] = 0;
|
|
|
|
while (pos < stats.st_size)
|
|
{
|
|
PARSED_ENTRY statement;
|
|
int type, size;
|
|
|
|
size = parse_line(parsed->contents + pos, &statement, &type);
|
|
if (size == -1) goto failed;
|
|
if (size == 0)
|
|
break;
|
|
pos += size;
|
|
|
|
switch (type)
|
|
{
|
|
case LINE_GROUP:
|
|
{
|
|
PARSED_GROUP *group = SHAlloc(sizeof(PARSED_GROUP));
|
|
if (group == NULL) goto failed;
|
|
is_in_group = TRUE;
|
|
|
|
group->name = statement.name;
|
|
group->entries = NULL;
|
|
group->next = NULL;
|
|
*curr_group = group;
|
|
curr_group = &group->next;
|
|
curr_entry = &group->entries;
|
|
break;
|
|
}
|
|
|
|
case LINE_ENTRY:
|
|
if (!is_in_group) goto failed;
|
|
/* fall through */
|
|
case LINE_COMMENT:
|
|
{
|
|
PARSED_ENTRY *new_stat = SHAlloc(sizeof(PARSED_ENTRY));
|
|
if (new_stat == NULL) goto failed;
|
|
*new_stat = statement;
|
|
new_stat->next = NULL;
|
|
*curr_entry = new_stat;
|
|
curr_entry = &new_stat->next;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return parsed;
|
|
|
|
failed:
|
|
XDG_FreeParsedFile(parsed);
|
|
return NULL;
|
|
}
|
|
|
|
char *XDG_GetStringValue(XDG_PARSED_FILE *file, const char *group_name, const char *value_name, DWORD dwFlags)
|
|
{
|
|
PARSED_GROUP *group;
|
|
PARSED_ENTRY *entry;
|
|
|
|
for (group = file->groups; group; group = group->next)
|
|
{
|
|
if (!parsed_str_eq(&group->name, group_name))
|
|
continue;
|
|
|
|
for (entry = group->entries; entry; entry = entry->next)
|
|
if (entry->name.str != NULL && parsed_str_eq(&entry->name, value_name))
|
|
{
|
|
int len;
|
|
char *ret;
|
|
|
|
len = dskentry_decode(entry->value.str, entry->value.len, NULL);
|
|
ret = SHAlloc(len);
|
|
if (ret == NULL) return NULL;
|
|
dskentry_decode(entry->value.str, entry->value.len, ret);
|
|
if (dwFlags & XDG_URLENCODE)
|
|
url_decode(ret, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Get the name of the xdg configuration file.
|
|
*
|
|
* [in] home_dir - $HOME
|
|
* [out] config_file - the name of the configuration file
|
|
*/
|
|
static HRESULT get_xdg_config_file(char * home_dir, char ** config_file)
|
|
{
|
|
char *config_home;
|
|
|
|
config_home = getenv("XDG_CONFIG_HOME");
|
|
if (!config_home || !config_home[0])
|
|
{
|
|
*config_file = HeapAlloc(GetProcessHeap(), 0, strlen(home_dir) + strlen("/.config/user-dirs.dirs") + 1);
|
|
if (!*config_file)
|
|
return E_OUTOFMEMORY;
|
|
|
|
strcpy(*config_file, home_dir);
|
|
strcat(*config_file, "/.config/user-dirs.dirs");
|
|
}
|
|
else
|
|
{
|
|
*config_file = HeapAlloc(GetProcessHeap(), 0, strlen(config_home) + strlen("/user-dirs.dirs") + 1);
|
|
if (!*config_file)
|
|
return E_OUTOFMEMORY;
|
|
|
|
strcpy(*config_file, config_home);
|
|
strcat(*config_file, "/user-dirs.dirs");
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
/* Parse the key in a line in the xdg-user-dir config file.
|
|
* i.e. XDG_PICTURES_DIR="$HOME/Pictures"
|
|
* ^ ^
|
|
*
|
|
* [in] xdg_dirs - array of xdg directories to look for
|
|
* [in] num_dirs - number of elements in xdg_dirs
|
|
* [in/out] p_ptr - pointer to where we are in the buffer
|
|
* Returns the index to xdg_dirs if we find the key, or -1 on error.
|
|
*/
|
|
static int parse_config1(const char * const *xdg_dirs, const unsigned int num_dirs, char ** p_ptr)
|
|
{
|
|
char *p;
|
|
int i;
|
|
|
|
p = *p_ptr;
|
|
while (*p == ' ' || *p == '\t')
|
|
p++;
|
|
if (strncmp(p, "XDG_", 4))
|
|
return -1;
|
|
|
|
p += 4;
|
|
for (i = 0; i < num_dirs; i++)
|
|
{
|
|
if (!strncmp(p, xdg_dirs[i], strlen(xdg_dirs[i])))
|
|
{
|
|
p += strlen(xdg_dirs[i]);
|
|
break;
|
|
}
|
|
}
|
|
if (i == num_dirs)
|
|
return -1;
|
|
if (strncmp(p, "_DIR", 4))
|
|
return -1;
|
|
p += 4;
|
|
while (*p == ' ' || *p == '\t')
|
|
p++;
|
|
if (*p != '=')
|
|
return -1;
|
|
p++;
|
|
while (*p == ' ' || *p == '\t')
|
|
p++;
|
|
if (*p != '"')
|
|
return -1;
|
|
p++;
|
|
|
|
*p_ptr = p;
|
|
return i;
|
|
}
|
|
|
|
/* Parse the value in a line in the xdg-user-dir config file.
|
|
* i.e. XDG_PICTURES_DIR="$HOME/Pictures"
|
|
* ^ ^
|
|
*
|
|
* [in] p - pointer to the buffer
|
|
* [in] home_dir - $HOME
|
|
* [out] out_ptr - the directory name
|
|
*/
|
|
static HRESULT parse_config2(char * p, const char * home_dir, char ** out_ptr)
|
|
{
|
|
BOOL relative;
|
|
char *out, *d;
|
|
|
|
relative = FALSE;
|
|
|
|
if (!strncmp(p, "$HOME/", 6))
|
|
{
|
|
p += 6;
|
|
relative = TRUE;
|
|
}
|
|
else if (*p != '/')
|
|
return E_FAIL;
|
|
|
|
if (relative)
|
|
{
|
|
out = HeapAlloc(GetProcessHeap(), 0, strlen(home_dir) + strlen(p) + 2);
|
|
if (!out)
|
|
return E_OUTOFMEMORY;
|
|
|
|
strcpy(out, home_dir);
|
|
strcat(out, "/");
|
|
}
|
|
else
|
|
{
|
|
out = HeapAlloc(GetProcessHeap(), 0, strlen(p) + 1);
|
|
if (!out)
|
|
return E_OUTOFMEMORY;
|
|
*out = 0;
|
|
}
|
|
|
|
d = out + strlen(out);
|
|
while (*p && *p != '"')
|
|
{
|
|
if ((*p == '\\') && (*(p + 1) != 0))
|
|
p++;
|
|
*d++ = *p++;
|
|
}
|
|
*d = 0;
|
|
*out_ptr = out;
|
|
return S_OK;
|
|
}
|
|
|
|
/* Parse part of a line in the xdg-user-dir config file.
|
|
* i.e. XDG_PICTURES_DIR="$HOME/Pictures"
|
|
* ^ ^
|
|
*
|
|
* The calling function is responsible for freeing all elements of out_ptr as
|
|
* well as out_ptr itself.
|
|
*
|
|
* [in] xdg_dirs - array of xdg directories to look for
|
|
* [in] num_dirs - number of elements in xdg_dirs
|
|
* [out] out_ptr - an array of the xdg directories names
|
|
*/
|
|
HRESULT XDG_UserDirLookup(const char * const *xdg_dirs, const unsigned int num_dirs, char *** out_ptr)
|
|
{
|
|
FILE *file;
|
|
char **out;
|
|
char *home_dir, *config_file;
|
|
char buffer[512];
|
|
int len;
|
|
unsigned int i;
|
|
HRESULT hr;
|
|
|
|
*out_ptr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_dirs * sizeof(char *));
|
|
out = *out_ptr;
|
|
if (!out)
|
|
return E_OUTOFMEMORY;
|
|
|
|
home_dir = getenv("HOME");
|
|
if (!home_dir)
|
|
{
|
|
hr = E_FAIL;
|
|
goto xdg_user_dir_lookup_error;
|
|
}
|
|
|
|
hr = get_xdg_config_file(home_dir, &config_file);
|
|
if (FAILED(hr))
|
|
goto xdg_user_dir_lookup_error;
|
|
|
|
file = fopen(config_file, "r");
|
|
HeapFree(GetProcessHeap(), 0, config_file);
|
|
if (!file)
|
|
{
|
|
hr = E_HANDLE;
|
|
goto xdg_user_dir_lookup_error;
|
|
}
|
|
|
|
while (fgets(buffer, sizeof(buffer), file))
|
|
{
|
|
int idx;
|
|
char *p;
|
|
|
|
/* Remove newline at end */
|
|
len = strlen(buffer);
|
|
if (len > 0 && buffer[len-1] == '\n')
|
|
buffer[len-1] = 0;
|
|
|
|
/* Parse the key */
|
|
p = buffer;
|
|
idx = parse_config1(xdg_dirs, num_dirs, &p);
|
|
if (idx < 0)
|
|
continue;
|
|
if (out[idx])
|
|
continue;
|
|
|
|
/* Parse the value */
|
|
hr = parse_config2(p, home_dir, &out[idx]);
|
|
if (FAILED(hr))
|
|
{
|
|
if (hr == E_OUTOFMEMORY)
|
|
goto xdg_user_dir_lookup_error;
|
|
continue;
|
|
}
|
|
}
|
|
fclose (file);
|
|
hr = S_OK;
|
|
|
|
/* Remove entries for directories that do not exist */
|
|
for (i = 0; i < num_dirs; i++)
|
|
{
|
|
struct stat statFolder;
|
|
|
|
if (!out[i])
|
|
continue;
|
|
if (!stat(out[i], &statFolder) && S_ISDIR(statFolder.st_mode))
|
|
continue;
|
|
HeapFree(GetProcessHeap(), 0, out[i]);
|
|
out[i] = NULL;
|
|
}
|
|
|
|
xdg_user_dir_lookup_error:
|
|
if (FAILED(hr))
|
|
{
|
|
for (i = 0; i < num_dirs; i++) HeapFree(GetProcessHeap(), 0, out[i]);
|
|
HeapFree(GetProcessHeap(), 0, *out_ptr);
|
|
}
|
|
return hr;
|
|
}
|