src/config.c

   1 /*
   2  * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <unistd.h>
  18 #include <fcntl.h>
  19 #include <gio/gio.h>
  20
  21 static GKeyFile *config;
  22 static int config_descr;
  23
  24 static gchar *data_dir;
  25
  26 /*static int hostnamed_ispect_xml_descr, hostnamed_dbus_xml_descr;
  27 static int localed_ispect_xml_descr, localed_dbus_xml_descr;
  28 static int timedated_ispect_xml_descr, timedated_dbus_xml_descr;
  29 static int logind_ispect_xml_descr, logind_dbus_xml_descr;
  30
  31 /*TODO depending on builtin xml flag, these should be matched to checksums */    /*
  32 static gchar **hostnamed_ispect_xml, hostnamed_dbus_xml;
  33 static gchar **localed_ispect_xml, localed_dbus_xml;
  34 static gchar **timedated_ispect_xml, timedated_dbus_xml;
  35 static gchar **logind_ispect_xml, logind_dbus_xml; */
  36
  37 static void set_xml_descriptors();
  38
  39 static const gchar *CONFIG_KEYS[] = {
  40     "PrettyHostname",
  41     "IconName",
  42     "ChassisType"
  43 };
  44
  45 /* NULL if key doesn't exist */
  46 gchar *get_option(gchar *key, gchar *group) {
  47
  48     if(!group)
  49         group = "default";
  50
  51     return g_key_file_get_string(config, group, key, NULL);
  52 }
  53
  54 /* false if key isn't already defined or value is invalid */
  55 gboolean set_option(gchar *key, gchar *value, gchar *group) {
  56
  57     if(!group)
  58         group = "default";
  59
  60     if(!g_key_file_get_string(config, group, key, NULL))
  61         return FALSE;
  62
  63     //TODO safteycheck value
  64     g_key_file_set_string(config, group, key, value);
  65     return TRUE;
  66 }
  67
  68 /* initial load/check */
  69 gboolean config_init() {
  70
  71     if(config)
  72         return TRUE; //already init'd
  73
  74     config = g_key_file_new();
  75
  76     const gchar *config_path;
  77     GStatBuf *config_lstat;
  78
  79     config_path = "/etc/systemd_compat.conf";
  80
  81     /* does conf exist? */
  82     if(g_lstat(config_path, config_lstat)) {
  83
  84         /* if not, can we write it */
  85         if(g_access("/etc/", W_OK)) {
  86             g_printf("%s\n", "no write permissions for /etc/! exiting..");
  87             return FALSE;
  88         }
  89
  90         int config_descr;
  91         config_descr = g_open(config_path, O_CREAT, 644);
  92
  93         gchar *posix_hostname;
  94         posix_hostname = g_malloc(HOST_NAME_MAX);
  95
  96         gethostname(posix_hostname, HOST_NAME_MAX);
  97
  98         g_key_file_set_string(config, "hostnamed", "Hostname", posix_hostname);
  99         g_key_file_set_string(config, "hostnamed", "PrettyHostname", "");
 100         g_key_file_set_string(config, "hostnamed", "IconName", "Computer");
 101         g_key_file_set_string(config, "hostnamed", "ChassisType", "laptop"); //TODO set these correctly
 102
 103         if(!g_key_file_save_to_file(config, config_path, NULL)) {
 104             g_printf("failed to write config to %s!\n", config_path);
 105             g_free(posix_hostname);
 106             return FALSE;
 107         }
 108
 109         g_printf("wrote config to %s\n", config_path);
 110
 111         g_free(posix_hostname);
 112
 113         return TRUE;
 114
 115     /* it does exist, read it */
 116     } else {
 117
 118         if(g_access(config_path, W_OK)) {
 119             g_printf("%s\n", "no write permissions for /etc/! exiting..");
 120             return FALSE;
 121         } else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL))
 122             return TRUE;
 123
 124         g_printf("could not read config at %s! exiting..", config_path);
 125         return FALSE;
 126     }
 127 }
 128
 129 gboolean init_xml() {
 130
 131         const gchar * const *data_dir_prefix;
 132
 133         data_dir_prefix = g_get_system_data_dirs();
 134         data_dir = g_strconcat(data_dir_prefix[0], "systemd_compat", NULL);
 135
 136         GStatBuf *xml_lstat;
 137
 138         /* does xml dir exist? */
 139         if(g_lstat(data_dir, xml_lstat)) {
 140
 141                 /* if not, can we write it? */
 142                 if(g_access(data_dir_prefix[0], W_OK)) {
 143                         g_printf("no write permissions for %s! exiting...\n", data_dir_prefix[0]);
 144                         return FALSE;
 145                 }
 146
 147                 g_printf("creating xml data directory %s...\n", data_dir);
 148                 if(g_mkdir(data_dir, 644)) {
 149                         g_printf("failed to create dir %s...\n", data_dir);
 150                         return FALSE;
 151                 }
 152
 153                 set_xml_descriptors();
 154         }
 155         return TRUE; /* kill me! */
 156 } /* kill me too!*/
 157
 158 //LEFTOFF
 159
 160 /*              gchar *posix_hostname;
 161                 posix_hostname = g_malloc(255);
 162
 163                 gethostname(posix_hostname, 255);
 164
 165                 g_key_file_set_string(config, "hostnamed", "Hostname", posix_hostname);
 166                 g_key_file_set_string(config, "hostnamed", "PrettyHostname", "");
 167                 g_key_file_set_string(config, "hostnamed", "IconName", "Computer");
 168                 g_key_file_set_string(config, "hostnamed", "ChassisType", "laptop"); //TODO set these correctly
 169
 170                 if(!g_key_file_save_to_file(config, config_path, NULL)) {
 171                         g_printf("failed to write config to %s!\n", config_path);
 172                         g_free(posix_hostname);
 173                         return FALSE;
 174                 }
 175
 176                 g_printf("wrote config to %s\n", config_path);
 177
 178                 g_free(posix_hostname);
 179
 180                 return TRUE;
 181
 182         /* it does exist, read it */     /*
 183         } else {
 184
 185                 if(!g_access(config_path, W_OK)) {
 186                         g_printf("%s\n", "no write permissions for /etc/! exiting..");
 187                         return FALSE;
 188                 } else if(g_key_file_load_from_file(config, config_path, G_KEY_FILE_KEEP_COMMENTS, NULL)) {
 189                         config_descr = g_open(config_path, O_RDWR, 644);
 190                         return TRUE;
 191                 }
 192
 193                 g_printf("could not read config at %s! exiting..", config_path);
 194                 return FALSE;
 195         }
 196
 197
 198         return TRUE;
 199 } */
 200
 201 static void set_xml_descriptors() {
 202
 203 }
 204
 205 void clean_config() {
 206
 207         //TODO g_ptr_array all of this
 208         g_free(config);
 209         g_free(data_dir);
 210         g_close(config_descr, NULL);
 211 }