378 lines
9.3 KiB
C
378 lines
9.3 KiB
C
/*
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* Copyright © 2012 Intel Corporation
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* Copyright © 2012 Ran Benita
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Daniel Stone <daniel@fooishbar.org>
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#ifdef _MSC_VER
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# include <direct.h>
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# include <io.h>
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# ifndef S_ISDIR
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# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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# endif
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#else
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# include <unistd.h>
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#endif
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#include "xkbcommon/xkbcommon.h"
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#include "utils.h"
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#include "context.h"
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/**
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* Append one directory to the context's include path.
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*/
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XKB_EXPORT int
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xkb_context_include_path_append(struct xkb_context *ctx, const char *path)
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{
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struct stat stat_buf;
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int err = ENOMEM;
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char *tmp;
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tmp = strdup(path);
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if (!tmp)
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goto err;
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err = stat(path, &stat_buf);
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if (err != 0) {
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err = errno;
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goto err;
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}
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if (!S_ISDIR(stat_buf.st_mode)) {
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err = ENOTDIR;
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goto err;
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}
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if (!check_eaccess(path, R_OK | X_OK)) {
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err = EACCES;
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goto err;
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}
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darray_append(ctx->includes, tmp);
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log_dbg(ctx, "Include path added: %s\n", tmp);
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return 1;
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err:
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darray_append(ctx->failed_includes, tmp);
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log_dbg(ctx, "Include path failed: %s (%s)\n", tmp, strerror(err));
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return 0;
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}
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const char *
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xkb_context_include_path_get_extra_path(struct xkb_context *ctx)
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{
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const char *extra = secure_getenv("XKB_CONFIG_EXTRA_PATH");
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return extra ? extra : DFLT_XKB_CONFIG_EXTRA_PATH;
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}
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const char *
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xkb_context_include_path_get_system_path(struct xkb_context *ctx)
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{
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const char *root = secure_getenv("XKB_CONFIG_ROOT");
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return root ? root : DFLT_XKB_CONFIG_ROOT;
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}
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/**
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* Append the default include directories to the context.
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*/
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XKB_EXPORT int
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xkb_context_include_path_append_default(struct xkb_context *ctx)
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{
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const char *home, *xdg, *root, *extra;
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char *user_path;
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int ret = 0;
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home = secure_getenv("HOME");
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xdg = secure_getenv("XDG_CONFIG_HOME");
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if (xdg != NULL) {
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user_path = asprintf_safe("%s/xkb", xdg);
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if (user_path) {
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ret |= xkb_context_include_path_append(ctx, user_path);
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free(user_path);
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}
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} else if (home != NULL) {
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/* XDG_CONFIG_HOME fallback is $HOME/.config/ */
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user_path = asprintf_safe("%s/.config/xkb", home);
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if (user_path) {
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ret |= xkb_context_include_path_append(ctx, user_path);
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free(user_path);
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}
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}
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if (home != NULL) {
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user_path = asprintf_safe("%s/.xkb", home);
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if (user_path) {
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ret |= xkb_context_include_path_append(ctx, user_path);
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free(user_path);
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}
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}
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extra = xkb_context_include_path_get_extra_path(ctx);
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ret |= xkb_context_include_path_append(ctx, extra);
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root = xkb_context_include_path_get_system_path(ctx);
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ret |= xkb_context_include_path_append(ctx, root);
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return ret;
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}
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/**
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* Remove all entries in the context's include path.
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*/
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XKB_EXPORT void
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xkb_context_include_path_clear(struct xkb_context *ctx)
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{
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char **path;
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darray_foreach(path, ctx->includes)
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free(*path);
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darray_free(ctx->includes);
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darray_foreach(path, ctx->failed_includes)
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free(*path);
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darray_free(ctx->failed_includes);
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}
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/**
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* xkb_context_include_path_clear() + xkb_context_include_path_append_default()
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*/
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XKB_EXPORT int
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xkb_context_include_path_reset_defaults(struct xkb_context *ctx)
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{
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xkb_context_include_path_clear(ctx);
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return xkb_context_include_path_append_default(ctx);
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}
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/**
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* Returns the number of entries in the context's include path.
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*/
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XKB_EXPORT unsigned int
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xkb_context_num_include_paths(struct xkb_context *ctx)
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{
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return darray_size(ctx->includes);
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}
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/**
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* Returns the given entry in the context's include path, or NULL if an
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* invalid index is passed.
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*/
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XKB_EXPORT const char *
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xkb_context_include_path_get(struct xkb_context *ctx, unsigned int idx)
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{
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if (idx >= xkb_context_num_include_paths(ctx))
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return NULL;
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return darray_item(ctx->includes, idx);
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}
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/**
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* Take a new reference on the context.
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*/
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XKB_EXPORT struct xkb_context *
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xkb_context_ref(struct xkb_context *ctx)
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{
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ctx->refcnt++;
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return ctx;
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}
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/**
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* Drop an existing reference on the context, and free it if the refcnt is
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* now 0.
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*/
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XKB_EXPORT void
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xkb_context_unref(struct xkb_context *ctx)
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{
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if (!ctx || --ctx->refcnt > 0)
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return;
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free(ctx->x11_atom_cache);
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xkb_context_include_path_clear(ctx);
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atom_table_free(ctx->atom_table);
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free(ctx);
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}
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static const char *
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log_level_to_prefix(enum xkb_log_level level)
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{
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switch (level) {
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case XKB_LOG_LEVEL_DEBUG:
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return "xkbcommon: DEBUG: ";
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case XKB_LOG_LEVEL_INFO:
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return "xkbcommon: INFO: ";
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case XKB_LOG_LEVEL_WARNING:
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return "xkbcommon: WARNING: ";
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case XKB_LOG_LEVEL_ERROR:
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return "xkbcommon: ERROR: ";
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case XKB_LOG_LEVEL_CRITICAL:
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return "xkbcommon: CRITICAL: ";
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default:
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return NULL;
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}
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}
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ATTR_PRINTF(3, 0) static void
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default_log_fn(struct xkb_context *ctx, enum xkb_log_level level,
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const char *fmt, va_list args)
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{
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const char *prefix = log_level_to_prefix(level);
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if (prefix)
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fprintf(stderr, "%s", prefix);
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vfprintf(stderr, fmt, args);
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}
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static enum xkb_log_level
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log_level(const char *level) {
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char *endptr;
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enum xkb_log_level lvl;
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errno = 0;
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lvl = strtol(level, &endptr, 10);
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if (errno == 0 && (endptr[0] == '\0' || is_space(endptr[0])))
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return lvl;
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if (istreq_prefix("crit", level))
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return XKB_LOG_LEVEL_CRITICAL;
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if (istreq_prefix("err", level))
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return XKB_LOG_LEVEL_ERROR;
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if (istreq_prefix("warn", level))
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return XKB_LOG_LEVEL_WARNING;
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if (istreq_prefix("info", level))
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return XKB_LOG_LEVEL_INFO;
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if (istreq_prefix("debug", level) || istreq_prefix("dbg", level))
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return XKB_LOG_LEVEL_DEBUG;
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return XKB_LOG_LEVEL_ERROR;
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}
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static int
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log_verbosity(const char *verbosity) {
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char *endptr;
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int v;
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errno = 0;
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v = strtol(verbosity, &endptr, 10);
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if (errno == 0)
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return v;
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return 0;
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}
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/**
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* Create a new context.
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*/
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XKB_EXPORT struct xkb_context *
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xkb_context_new(enum xkb_context_flags flags)
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{
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const char *env;
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struct xkb_context *ctx = calloc(1, sizeof(*ctx));
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if (!ctx)
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return NULL;
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ctx->refcnt = 1;
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ctx->log_fn = default_log_fn;
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ctx->log_level = XKB_LOG_LEVEL_ERROR;
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ctx->log_verbosity = 0;
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/* Environment overwrites defaults. */
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env = secure_getenv("XKB_LOG_LEVEL");
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if (env)
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xkb_context_set_log_level(ctx, log_level(env));
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env = secure_getenv("XKB_LOG_VERBOSITY");
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if (env)
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xkb_context_set_log_verbosity(ctx, log_verbosity(env));
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if (!(flags & XKB_CONTEXT_NO_DEFAULT_INCLUDES) &&
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!xkb_context_include_path_append_default(ctx)) {
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log_err(ctx, "failed to add default include path %s\n",
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DFLT_XKB_CONFIG_ROOT);
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xkb_context_unref(ctx);
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return NULL;
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}
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ctx->use_environment_names = !(flags & XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
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ctx->atom_table = atom_table_new();
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if (!ctx->atom_table) {
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xkb_context_unref(ctx);
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return NULL;
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}
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ctx->x11_atom_cache = NULL;
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return ctx;
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}
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XKB_EXPORT void
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xkb_context_set_log_fn(struct xkb_context *ctx,
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void (*log_fn)(struct xkb_context *ctx,
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enum xkb_log_level level,
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const char *fmt, va_list args))
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{
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ctx->log_fn = (log_fn ? log_fn : default_log_fn);
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}
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XKB_EXPORT enum xkb_log_level
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xkb_context_get_log_level(struct xkb_context *ctx)
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{
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return ctx->log_level;
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}
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XKB_EXPORT void
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xkb_context_set_log_level(struct xkb_context *ctx, enum xkb_log_level level)
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{
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ctx->log_level = level;
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}
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XKB_EXPORT int
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xkb_context_get_log_verbosity(struct xkb_context *ctx)
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{
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return ctx->log_verbosity;
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}
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XKB_EXPORT void
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xkb_context_set_log_verbosity(struct xkb_context *ctx, int verbosity)
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{
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ctx->log_verbosity = verbosity;
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}
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XKB_EXPORT void *
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xkb_context_get_user_data(struct xkb_context *ctx)
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{
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if (ctx)
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return ctx->user_data;
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return NULL;
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}
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XKB_EXPORT void
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xkb_context_set_user_data(struct xkb_context *ctx, void *user_data)
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{
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ctx->user_data = user_data;
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}
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