change buffer size for gethostname() to HOST_NAME_MAX to avoid accidently truncating...

[systembsd.git] / src / config.c

diff --git a/src/config.c b/src/config.c
index b1b716105590454bfc4c0247f193a04088f39c7f..ac9ecf468e2df72c62f6f4e2be478da8304b4491 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -1 +1,111 @@
-init
+/*
+ * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <gio/gio.h>
+
+static GKeyFile *config;
+
+static const gchar *CONFIG_KEYS[] = {
+    "PrettyHostname",
+    "IconName",
+    "ChassisType"
+};
+
+/* NULL if key doesn't exist */
+gchar *get_option(gchar *key, gchar *group) {
+
+    if(!group)
+        group = "default";
+
+    return g_key_file_get_string(config, group, key, NULL);
+}
+
+/* false if key isn't already defined or value is invalid */
+gboolean set_option(gchar *key, gchar *value, gchar *group) {
+
+    if(!group)
+        group = "default";
+
+    if(!g_key_file_get_string(config, group, key, NULL))
+        return FALSE;
+
+    //TODO safteycheck value
+    g_key_file_set_string(config, group, key, value);
+    return TRUE;
+}
+
+/* initial load/check */
+gboolean config_init() {
+
+    if(config)
+        return TRUE; //already init'd
+
+    config = g_key_file_new();
+    
+    const gchar *config_path;
+    GStatBuf *config_lstat;
+
+    config_path = "/etc/systemd_compat.conf";
+
+    /* does conf exist? */
+    if(g_lstat(config_path, config_lstat)) {
+
+        /* if not, can we write it */
+        if(g_access("/etc/", W_OK)) {
+            g_printf("%s\n", "no write permissions for /etc/! exiting..");
+            return FALSE;
+        }
+
+        int config_descr;
+        config_descr = g_open(config_path, O_CREAT, 644);
+
+        gchar *posix_hostname;
+        posix_hostname = g_malloc(HOST_NAME_MAX); 
+
+        gethostname(posix_hostname, HOST_NAME_MAX);
+
+        g_key_file_set_string(config, "hostnamed", "Hostname", posix_hostname);
+        g_key_file_set_string(config, "hostnamed", "PrettyHostname", "");
+        g_key_file_set_string(config, "hostnamed", "IconName", "Computer"); 
+        g_key_file_set_string(config, "hostnamed", "ChassisType", "laptop"); //TODO set these correctly
+
+        if(!g_key_file_save_to_file(config, config_path, NULL)) {
+            g_printf("failed to write config to %s!\n", config_path);
+            g_free(posix_hostname);
+            return FALSE;
+        }
+
+        g_printf("wrote config to %s\n", config_path);
+
+        g_free(posix_hostname);
+
+        return TRUE;
+
+    /* it does exist, read it */
+    } else {
+
+        if(!g_access(config_path, W_OK)) {
+            g_printf("%s\n", "no write permissions for /etc/! exiting..");
+            return FALSE;
+        } else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL))
+            return TRUE;
+
+        g_printf("could not read config at %s! exiting..", config_path);
+        return FALSE;
+    }
+}