int jalu_config_lookup_string(const config_setting_t *setting,
const char *name, char **field, int required) {
if (!setting || !name || !field || *field) {
//library error, should never happen
fprintf(stderr, "Error: misuse of jalls_config_lookup_string\n");
goto err_out;
}
config_setting_t *member = config_setting_get_member(setting, name);
if (!member && required) {
fprintf(stderr, "Config Error: line %d: missing required field \"%s\"\n",
config_setting_source_line(setting), name);
goto err_out;
}
if (!member) {
goto out;
}
if(config_setting_type(member) != CONFIG_TYPE_STRING) {
fprintf(stderr, "Config Error: line %d: field \"%s\" should be a string\n",
config_setting_source_line(member), name);
goto err_out;
}
const char *tmp = config_setting_get_string(member);
if (!tmp && required) {
fprintf(stderr, "Config Error: line %d: empty required field \"%s\"\n",
config_setting_source_line(setting), name);
goto err_out;
}
if (!tmp) {
fprintf(stderr, "Config Warning: line %d: empty value for field \"%s\"\n",
config_setting_source_line(setting), name);
goto out;
}
*field = strdup(tmp);
if (*field == NULL) {
fprintf(stderr, "strdup failed: insufficient memory");
goto err_out;
}
out:
return 0;
err_out:
return -1;
}
void setting_error_report(config_setting_t *setting, const char* message, ...)
{
char message_buffer[MAX_MESSAGE_BUFFER_LEN];
va_list arg_list;
va_start(arg_list, message);
vsnprintf(message_buffer, MAX_MESSAGE_BUFFER_LEN, message, arg_list);
va_end(arg_list);
message_buffer[MAX_MESSAGE_BUFFER_LEN - 1] = 0;
LOG_ERROR("%s at line %d in %s", message_buffer, config_setting_source_line(setting), config_setting_source_file(setting));
}
/**
* Loads group configuration from config file into memory.
* @private
*/
static void read_config(void)
{
config_setting_t *groups = NULL;
const char *config_filename = "conf/groups.conf"; // FIXME hardcoded name
int group_count = 0;
if (conf_read_file(&pc_group_config, config_filename))
return;
groups = config_lookup(&pc_group_config, "groups");
if (groups != NULL) {
GroupSettings *group_settings = NULL;
DBIterator *iter = NULL;
int i, loop = 0;
group_count = config_setting_length(groups);
for (i = 0; i < group_count; ++i) {
int id = 0, level = 0;
const char *groupname = NULL;
int log_commands = 0;
config_setting_t *group = config_setting_get_elem(groups, i);
if (!config_setting_lookup_int(group, "id", &id)) {
ShowConfigWarning(group, "pc_groups:read_config: \"groups\" list member #%d has undefined id, removing...", i);
config_setting_remove_elem(groups, i);
--i;
--group_count;
continue;
}
if (id2group(id) != NULL) {
ShowConfigWarning(group, "pc_groups:read_config: duplicate group id %d, removing...", i);
config_setting_remove_elem(groups, i);
--i;
--group_count;
continue;
}
config_setting_lookup_int(group, "level", &level);
config_setting_lookup_bool(group, "log_commands", &log_commands);
if (!config_setting_lookup_string(group, "name", &groupname)) {
char temp[20];
config_setting_t *name = NULL;
snprintf(temp, sizeof(temp), "Group %d", id);
if ((name = config_setting_add(group, "name", CONFIG_TYPE_STRING)) == NULL ||
!config_setting_set_string(name, temp)) {
ShowError("pc_groups:read_config: failed to set missing group name, id=%d, skipping... (%s:%d)\n",
id, config_setting_source_file(group), config_setting_source_line(group));
continue;
}
config_setting_lookup_string(group, "name", &groupname); // Retrieve the pointer
}
if (name2group(groupname) != NULL) {
ShowConfigWarning(group, "pc_groups:read_config: duplicate group name %s, removing...", groupname);
config_setting_remove_elem(groups, i);
--i;
--group_count;
continue;
}
CREATE(group_settings, GroupSettings, 1);
group_settings->id = id;
group_settings->level = level;
group_settings->name = groupname;
group_settings->log_commands = (bool)log_commands;
group_settings->inherit = config_setting_get_member(group, "inherit");
group_settings->commands = config_setting_get_member(group, "commands");
group_settings->permissions = config_setting_get_member(group, "permissions");
group_settings->inheritance_done = false;
group_settings->root = group;
group_settings->group_pos = i;
strdb_put(pc_groupname_db, groupname, group_settings);
idb_put(pc_group_db, id, group_settings);
}
group_count = config_setting_length(groups); // Save number of groups
// Check if all commands and permissions exist
iter = db_iterator(pc_group_db);
for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
config_setting_t *commands = group_settings->commands, *permissions = group_settings->permissions;
int count = 0, j;
// Make sure there is "commands" group
if (commands == NULL)
commands = group_settings->commands = config_setting_add(group_settings->root, "commands", CONFIG_TYPE_GROUP);
count = config_setting_length(commands);
for (j = 0; j < count; ++j) {
config_setting_t *command = config_setting_get_elem(commands, j);
const char *name = config_setting_name(command);
if (!atcommand_exists(name)) {
ShowConfigWarning(command, "pc_groups:read_config: non-existent command name '%s', removing...", name);
config_setting_remove(commands, name);
--j;
--count;
}
}
// Make sure there is "permissions" group
if (permissions == NULL)
permissions = group_settings->permissions = config_setting_add(group_settings->root, "permissions", CONFIG_TYPE_GROUP);
count = config_setting_length(permissions);
for(j = 0; j < count; ++j) {
config_setting_t *permission = config_setting_get_elem(permissions, j);
const char *name = config_setting_name(permission);
int p;
ARR_FIND(0, ARRAYLENGTH(pc_g_permission_name), p, strcmp(pc_g_permission_name[p].name, name) == 0);
if (p == ARRAYLENGTH(pc_g_permission_name)) {
ShowConfigWarning(permission, "pc_groups:read_config: non-existent permission name '%s', removing...", name);
config_setting_remove(permissions, name);
--p;
--count;
}
}
}
dbi_destroy(iter);
// Apply inheritance
i = 0; // counter for processed groups
while (i < group_count) {
iter = db_iterator(pc_group_db);
for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
config_setting_t *inherit = NULL,
*commands = group_settings->commands,
*permissions = group_settings->permissions;
int j, inherit_count = 0, done = 0;
if (group_settings->inheritance_done) // group already processed
continue;
if ((inherit = group_settings->inherit) == NULL ||
(inherit_count = config_setting_length(inherit)) <= 0) { // this group does not inherit from others
++i;
group_settings->inheritance_done = true;
continue;
}
for (j = 0; j < inherit_count; ++j) {
GroupSettings *inherited_group = NULL;
const char *groupname = config_setting_get_string_elem(inherit, j);
if (groupname == NULL) {
ShowConfigWarning(inherit, "pc_groups:read_config: \"inherit\" array member #%d is not a name, removing...", j);
config_setting_remove_elem(inherit,j);
continue;
}
if ((inherited_group = name2group(groupname)) == NULL) {
ShowConfigWarning(inherit, "pc_groups:read_config: non-existent group name \"%s\", removing...", groupname);
config_setting_remove_elem(inherit,j);
continue;
}
if (!inherited_group->inheritance_done)
continue; // we need to do that group first
// Copy settings (commands/permissions) that are not defined yet
if (inherited_group->commands != NULL) {
int l = 0, commands_count = config_setting_length(inherited_group->commands);
for (l = 0; l < commands_count; ++l)
config_setting_copy(commands, config_setting_get_elem(inherited_group->commands, l));
}
if (inherited_group->permissions != NULL) {
int l = 0, permissions_count = config_setting_length(inherited_group->permissions);
for (l = 0; l < permissions_count; ++l)
config_setting_copy(permissions, config_setting_get_elem(inherited_group->permissions, l));
}
++done; // copied commands and permissions from one of inherited groups
}
if (done == inherit_count) { // copied commands from all of inherited groups
++i;
group_settings->inheritance_done = true; // we're done with this group
}
}
dbi_destroy(iter);
if (++loop > group_count) {
ShowWarning("pc_groups:read_config: Could not process inheritance rules, check your config '%s' for cycles...\n",
config_filename);
break;
}
} // while(i < group_count)
// Pack permissions into GroupSettings.e_permissions for faster checking
iter = db_iterator(pc_group_db);
for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
config_setting_t *permissions = group_settings->permissions;
int c, count = config_setting_length(permissions);
for (c = 0; c < count; ++c) {
config_setting_t *perm = config_setting_get_elem(permissions, c);
const char *name = config_setting_name(perm);
int val = config_setting_get_bool(perm);
int j;
if (val == 0) // does not have this permission
continue;
ARR_FIND(0, ARRAYLENGTH(pc_g_permission_name), j, strcmp(pc_g_permission_name[j].name, name) == 0);
group_settings->e_permissions |= pc_g_permission_name[j].permission;
}
}
dbi_destroy(iter);
}
ShowStatus("Done reading '"CL_WHITE"%d"CL_RESET"' groups in '"CL_WHITE"%s"CL_RESET"'.\n", group_count, config_filename);
if( ( pc_group_max = group_count ) ) {
DBIterator *iter = db_iterator(pc_group_db);
GroupSettings *group_settings = NULL;
int* group_ids = aMalloc( pc_group_max * sizeof(int) );
int i = 0;
for (group_settings = dbi_first(iter); dbi_exists(iter); group_settings = dbi_next(iter)) {
group_ids[i++] = group_settings->id;
}
atcommand_db_load_groups(group_ids);
aFree(group_ids);
dbi_destroy(iter);
}
}
int gt_parse_settings(config_t *config)
{
config_setting_t *node, *root, *elem;
int i, len, ret;
struct stat st;
const char *filename;
if (stat(GT_USER_SETTING_PATH, &st) == 0)
filename = GT_USER_SETTING_PATH;
else
filename = GT_SETTING_PATH;
ret = config_read_file(config, filename);
if (ret == CONFIG_FALSE)
return -1;
root = config_root_setting(config);
#define GET_SETTING(name, field) do { \
node = config_setting_get_member(root, name); \
if (node) { \
if (config_setting_type(node) != CONFIG_TYPE_STRING) { \
fprintf(stderr, "%s:%d: Expected string\n", \
config_setting_source_file(node), \
config_setting_source_line(node)); \
return -1; \
} \
gt_settings.field = config_setting_get_string(node); \
} \
} while (0)
GET_SETTING("default-udc", default_udc);
GET_SETTING("configfs-path", configfs_path);
GET_SETTING("default-template-path", default_template_path);
GET_SETTING("default-gadget", default_gadget);
node = config_setting_get_member(root, "lookup-path");
if (node) {
if (config_setting_is_aggregate(node) == CONFIG_FALSE) {
fprintf(stderr, "%s:%d: Expected list\n",
config_setting_source_file(node),
config_setting_source_line(node));
return -1;
}
len = config_setting_length(node);
gt_settings.lookup_path = calloc(len + 1, sizeof(*gt_settings.lookup_path));
for (i = 0; i < len; ++i) {
elem = config_setting_get_elem(node, i);
if (config_setting_type(elem) != CONFIG_TYPE_STRING) {
fprintf(stderr, "%s:%d: Expected string\n",
config_setting_source_file(elem),
config_setting_source_line(elem));
goto out;
}
gt_settings.lookup_path[i] = config_setting_get_string(elem);
}
}
#undef GET_SETTING
return 0;
out:
free(gt_settings.lookup_path);
return -1;
}
