2011-11-15 07:43:37 +04:00
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/*
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* Copyright © 2011 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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2013-05-22 19:03:19 +04:00
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#include "config.h"
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2011-11-15 07:43:37 +04:00
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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2012-08-04 05:56:41 +04:00
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#include <ctype.h>
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2013-05-14 20:48:26 +04:00
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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2013-04-01 20:41:23 +04:00
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#include <errno.h>
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2011-11-15 07:43:37 +04:00
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2013-04-01 20:41:23 +04:00
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#include <wayland-util.h>
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2011-12-08 21:44:27 +04:00
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#include "config-parser.h"
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2011-11-15 07:43:37 +04:00
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2013-05-27 04:50:53 +04:00
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#define container_of(ptr, type, member) ({ \
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const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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2013-09-22 10:17:35 +04:00
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struct weston_config_entry {
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char *key;
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char *value;
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struct wl_list link;
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};
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struct weston_config_section {
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char *name;
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struct wl_list entry_list;
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struct wl_list link;
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};
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struct weston_config {
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struct wl_list section_list;
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char path[PATH_MAX];
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};
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2013-09-22 10:02:31 +04:00
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static int
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2013-09-22 10:17:35 +04:00
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open_config_file(struct weston_config *c, const char *name)
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2011-11-15 13:45:40 +04:00
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{
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2013-05-14 20:48:26 +04:00
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const char *config_dir = getenv("XDG_CONFIG_HOME");
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const char *home_dir = getenv("HOME");
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const char *config_dirs = getenv("XDG_CONFIG_DIRS");
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const char *p, *next;
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int fd;
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2013-09-22 10:17:35 +04:00
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if (name[0] == '/') {
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snprintf(c->path, sizeof c->path, "%s", name);
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2013-09-22 10:02:31 +04:00
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return open(name, O_RDONLY | O_CLOEXEC);
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2013-09-22 10:17:35 +04:00
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}
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2013-09-22 10:02:31 +04:00
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2013-05-14 20:48:26 +04:00
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/* Precedence is given to config files in the home directory,
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* and then to directories listed in XDG_CONFIG_DIRS and
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* finally to the current working directory. */
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/* $XDG_CONFIG_HOME */
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if (config_dir) {
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2013-09-22 10:17:35 +04:00
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snprintf(c->path, sizeof c->path, "%s/%s", config_dir, name);
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fd = open(c->path, O_RDONLY | O_CLOEXEC);
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2013-05-14 20:48:26 +04:00
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if (fd >= 0)
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return fd;
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}
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/* $HOME/.config */
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if (home_dir) {
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2013-09-22 10:17:35 +04:00
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snprintf(c->path, sizeof c->path,
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"%s/.config/%s", home_dir, name);
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fd = open(c->path, O_RDONLY | O_CLOEXEC);
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2013-05-14 20:48:26 +04:00
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if (fd >= 0)
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return fd;
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}
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2011-11-15 13:45:40 +04:00
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2013-05-14 20:48:26 +04:00
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/* For each $XDG_CONFIG_DIRS: weston/<config_file> */
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if (!config_dirs)
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config_dirs = "/etc/xdg"; /* See XDG base dir spec. */
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2011-11-15 13:45:40 +04:00
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2013-05-14 20:48:26 +04:00
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for (p = config_dirs; *p != '\0'; p = next) {
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next = strchrnul(p, ':');
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2013-09-22 10:17:35 +04:00
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snprintf(c->path, sizeof c->path,
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2013-05-14 20:48:26 +04:00
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"%.*s/weston/%s", (int)(next - p), p, name);
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2013-09-22 10:17:35 +04:00
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fd = open(c->path, O_RDONLY | O_CLOEXEC);
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2013-05-14 20:48:26 +04:00
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if (fd >= 0)
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return fd;
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if (*next == ':')
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next++;
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2011-11-15 13:45:40 +04:00
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}
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2013-05-14 20:48:26 +04:00
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/* Current working directory. */
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2013-09-22 10:17:35 +04:00
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snprintf(c->path, sizeof c->path, "./%s", name);
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2011-11-15 13:45:40 +04:00
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2013-09-22 10:17:35 +04:00
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return open(c->path, O_RDONLY | O_CLOEXEC);
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2011-11-15 13:45:40 +04:00
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}
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2013-04-01 20:41:23 +04:00
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static struct weston_config_entry *
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config_section_get_entry(struct weston_config_section *section,
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const char *key)
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{
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struct weston_config_entry *e;
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if (section == NULL)
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return NULL;
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wl_list_for_each(e, §ion->entry_list, link)
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if (strcmp(e->key, key) == 0)
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return e;
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return NULL;
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}
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2013-07-01 19:03:08 +04:00
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WL_EXPORT
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2013-04-01 20:41:23 +04:00
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struct weston_config_section *
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weston_config_get_section(struct weston_config *config, const char *section,
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const char *key, const char *value)
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{
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struct weston_config_section *s;
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struct weston_config_entry *e;
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config-parser: Avoid null dereference when handling config-parser
backtrace:
(gdb) bt
#0 weston_config_get_section (config=0x0, section=0x8062f31 "keyboard", key=0x0, value=0x0)
at config-parser.c:265
#1 0x080535a1 in weston_compositor_init (ec=0x905b690, display=0x9056490, argc=0xbf8bd2f0,
argv=0xbf8bd384, config_fd=-1) at compositor.c:2819
#2 0xb75d72bb in x11_compositor_create (config_fd=-1, argv=0xbf8bd384, argc=<optimized out>,
use_pixman=0, no_input=0, fullscreen=0, display=0x9056490) at compositor-x11.c:1527
#3 backend_init (display=0x9056490, argc=0xbf8bd2f0, argv=0xbf8bd384, config_fd=-1)
at compositor-x11.c:1746
2013-05-24 21:09:13 +04:00
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if (config == NULL)
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return NULL;
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2013-04-01 20:41:23 +04:00
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wl_list_for_each(s, &config->section_list, link) {
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if (strcmp(s->name, section) != 0)
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continue;
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if (key == NULL)
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return s;
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e = config_section_get_entry(s, key);
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if (e && strcmp(e->value, value) == 0)
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return s;
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}
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return NULL;
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}
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2013-07-01 19:03:08 +04:00
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WL_EXPORT
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2013-04-01 20:41:23 +04:00
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int
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weston_config_section_get_int(struct weston_config_section *section,
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const char *key,
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int32_t *value, int32_t default_value)
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{
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struct weston_config_entry *entry;
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char *end;
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entry = config_section_get_entry(section, key);
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if (entry == NULL) {
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*value = default_value;
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errno = ENOENT;
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return -1;
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}
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*value = strtol(entry->value, &end, 0);
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if (*end != '\0') {
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*value = default_value;
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errno = EINVAL;
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return -1;
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}
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return 0;
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}
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2013-07-01 19:03:08 +04:00
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WL_EXPORT
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2013-04-01 20:41:23 +04:00
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int
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weston_config_section_get_uint(struct weston_config_section *section,
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const char *key,
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uint32_t *value, uint32_t default_value)
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{
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struct weston_config_entry *entry;
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char *end;
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entry = config_section_get_entry(section, key);
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if (entry == NULL) {
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*value = default_value;
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errno = ENOENT;
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return -1;
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}
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*value = strtoul(entry->value, &end, 0);
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if (*end != '\0') {
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*value = default_value;
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errno = EINVAL;
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return -1;
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}
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return 0;
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}
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2013-07-31 03:41:03 +04:00
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WL_EXPORT
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int
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weston_config_section_get_double(struct weston_config_section *section,
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const char *key,
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double *value, double default_value)
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{
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struct weston_config_entry *entry;
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char *end;
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entry = config_section_get_entry(section, key);
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if (entry == NULL) {
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*value = default_value;
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errno = ENOENT;
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return -1;
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}
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*value = strtod(entry->value, &end);
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if (*end != '\0') {
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*value = default_value;
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errno = EINVAL;
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return -1;
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}
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return 0;
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}
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2013-07-01 19:03:08 +04:00
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WL_EXPORT
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2013-04-01 20:41:23 +04:00
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int
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weston_config_section_get_string(struct weston_config_section *section,
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const char *key,
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char **value, const char *default_value)
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{
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struct weston_config_entry *entry;
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entry = config_section_get_entry(section, key);
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if (entry == NULL) {
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if (default_value)
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*value = strdup(default_value);
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else
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*value = NULL;
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errno = ENOENT;
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return -1;
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}
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*value = strdup(entry->value);
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return 0;
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}
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2013-07-01 19:03:08 +04:00
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WL_EXPORT
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2013-04-01 20:41:23 +04:00
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int
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weston_config_section_get_bool(struct weston_config_section *section,
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const char *key,
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int *value, int default_value)
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{
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struct weston_config_entry *entry;
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entry = config_section_get_entry(section, key);
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if (entry == NULL) {
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*value = default_value;
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errno = ENOENT;
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return -1;
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}
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if (strcmp(entry->value, "false") == 0)
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*value = 0;
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else if (strcmp(entry->value, "true") == 0)
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*value = 1;
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else {
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*value = default_value;
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errno = EINVAL;
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return -1;
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}
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return 0;
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}
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static struct weston_config_section *
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config_add_section(struct weston_config *config, const char *name)
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{
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struct weston_config_section *section;
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section = malloc(sizeof *section);
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section->name = strdup(name);
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wl_list_init(§ion->entry_list);
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wl_list_insert(config->section_list.prev, §ion->link);
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return section;
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}
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static struct weston_config_entry *
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section_add_entry(struct weston_config_section *section,
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const char *key, const char *value)
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{
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struct weston_config_entry *entry;
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entry = malloc(sizeof *entry);
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entry->key = strdup(key);
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entry->value = strdup(value);
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wl_list_insert(section->entry_list.prev, &entry->link);
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return entry;
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}
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struct weston_config *
|
2013-09-22 10:02:31 +04:00
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weston_config_parse(const char *name)
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2013-04-01 20:41:23 +04:00
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{
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FILE *fp;
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char line[512], *p;
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struct weston_config *config;
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struct weston_config_section *section = NULL;
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2013-09-22 10:02:31 +04:00
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int i, fd;
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2013-04-01 20:41:23 +04:00
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config = malloc(sizeof *config);
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if (config == NULL)
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return NULL;
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wl_list_init(&config->section_list);
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|
2013-09-22 10:17:35 +04:00
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fd = open_config_file(config, name);
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2013-09-22 10:02:31 +04:00
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if (fd == -1) {
|
2013-04-01 20:41:23 +04:00
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free(config);
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return NULL;
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}
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|
2013-09-22 10:02:31 +04:00
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|
|
fp = fdopen(fd, "r");
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|
if (fp == NULL) {
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free(config);
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return NULL;
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}
|
2013-04-01 20:41:23 +04:00
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|
while (fgets(line, sizeof line, fp)) {
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switch (line[0]) {
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|
|
case '#':
|
|
|
|
case '\n':
|
|
|
|
continue;
|
|
|
|
case '[':
|
|
|
|
p = strchr(&line[1], ']');
|
|
|
|
if (!p || p[1] != '\n') {
|
|
|
|
fprintf(stderr, "malformed "
|
|
|
|
"section header: %s\n", line);
|
|
|
|
fclose(fp);
|
|
|
|
weston_config_destroy(config);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
p[0] = '\0';
|
|
|
|
section = config_add_section(config, &line[1]);
|
|
|
|
continue;
|
|
|
|
default:
|
|
|
|
p = strchr(line, '=');
|
|
|
|
if (!p || p == line || !section) {
|
|
|
|
fprintf(stderr, "malformed "
|
|
|
|
"config line: %s\n", line);
|
|
|
|
fclose(fp);
|
|
|
|
weston_config_destroy(config);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
p[0] = '\0';
|
|
|
|
p++;
|
|
|
|
while (isspace(*p))
|
|
|
|
p++;
|
|
|
|
i = strlen(p);
|
|
|
|
while (i > 0 && isspace(p[i - 1])) {
|
|
|
|
p[i - 1] = '\0';
|
|
|
|
i--;
|
|
|
|
}
|
|
|
|
section_add_entry(section, line, p);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fclose(fp);
|
|
|
|
|
|
|
|
return config;
|
|
|
|
}
|
|
|
|
|
2013-09-22 10:17:35 +04:00
|
|
|
const char *
|
|
|
|
weston_config_get_full_path(struct weston_config *config)
|
|
|
|
{
|
|
|
|
return config->path;
|
|
|
|
}
|
|
|
|
|
2013-05-27 04:50:53 +04:00
|
|
|
int
|
|
|
|
weston_config_next_section(struct weston_config *config,
|
|
|
|
struct weston_config_section **section,
|
|
|
|
const char **name)
|
|
|
|
{
|
config-parser: Avoid null dereference when handling config-parser ( when weston starts without config file. )
backtrace:
(gdb) bt
#0 weston_config_next_section (config=0x0, section=0xbfb2b608, name=0xbfb2b618) at config-parser.c:485
#1 0xb75b1371 in x11_compositor_create (config=0x1, argv=0xbfb2ba44, argc=<optimized out>, use_pixman=0, no_input=0, fullscreen=0, display=0xb75b55f9)
at compositor-x11.c:1582
#2 backend_init (display=0x8354490, argc=0xbfb2b9b0, argv=0xbfb2ba44, config=0x0) at compositor-x11.c:1674
#3 0x0804df7b in main (argc=1, argv=0xbfb2ba44) at compositor.c:3289
2013-05-27 19:04:26 +04:00
|
|
|
if (config == NULL)
|
|
|
|
return 0;
|
|
|
|
|
2013-05-27 04:50:53 +04:00
|
|
|
if (*section == NULL)
|
|
|
|
*section = container_of(config->section_list.next,
|
|
|
|
struct weston_config_section, link);
|
|
|
|
else
|
|
|
|
*section = container_of((*section)->link.next,
|
|
|
|
struct weston_config_section, link);
|
|
|
|
|
|
|
|
if (&(*section)->link == &config->section_list)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
*name = (*section)->name;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2013-04-01 20:41:23 +04:00
|
|
|
void
|
|
|
|
weston_config_destroy(struct weston_config *config)
|
|
|
|
{
|
|
|
|
struct weston_config_section *s, *next_s;
|
|
|
|
struct weston_config_entry *e, *next_e;
|
|
|
|
|
2013-05-27 19:20:04 +04:00
|
|
|
if (config == NULL)
|
|
|
|
return;
|
|
|
|
|
2013-04-01 20:41:23 +04:00
|
|
|
wl_list_for_each_safe(s, next_s, &config->section_list, link) {
|
|
|
|
wl_list_for_each_safe(e, next_e, &s->entry_list, link) {
|
|
|
|
free(e->key);
|
|
|
|
free(e->value);
|
|
|
|
free(e);
|
|
|
|
}
|
|
|
|
free(s->name);
|
|
|
|
free(s);
|
|
|
|
}
|
|
|
|
|
|
|
|
free(config);
|
|
|
|
}
|