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#include "config-load.h"
#include "config-ini.h"
#include "types.h"
#include <libubox/avl.h>
#include <libubox/avl-cmp.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
typedef enum {
LOAD_TYPE_INTERFACE,
LOAD_TYPE_SUBCONFIG,
LOAD_TYPE_GENERATOR,
LOAD_TYPE_DEVICE,
N_LOAD_TYPES,
} load_type_t;
typedef struct {
struct avl_node node;
char *type;
ini_file_t *data;
} load_object_t;
typedef struct {
struct avl_tree objects[N_LOAD_TYPES];
} load_ctx_t;
static const char * extname(const char *filename) {
const char *dot = strrchr(filename, '.');
return dot ? (dot+1) : NULL;
}
static void free_object(load_object_t *obj) {
free_ini_file(obj->data);
free(obj->type);
free(NODE_NAME(obj));
free(obj);
}
static bool read_config_file(load_ctx_t *ctx, int dirfd, const char *filename) {
const char *ext = extname(filename);
if (!ext) {
errno = EINVAL;
return false;
}
load_type_t type;
if (strcmp(ext, "interface") == 0)
type = LOAD_TYPE_INTERFACE;
else if (strcmp(ext, "sub") == 0)
type = LOAD_TYPE_SUBCONFIG;
else if (strcmp(ext, "gen") == 0)
type = LOAD_TYPE_GENERATOR;
else if (strcmp(ext, "bridge") == 0)
type = LOAD_TYPE_DEVICE;
else
return true;
int fd = openat(dirfd, filename, O_RDONLY);
if (fd < 0)
return false;
FILE *f = fdopen(fd, "r");
if (!f) {
close(fd);
return false;
}
ini_file_t *data = read_ini_file(f);
fclose(f);
if (!data)
return false;
load_object_t *obj = calloc(1, sizeof(*obj));
if (!obj) {
free_ini_file(data);
return false;
}
obj->data = data;
char *name = strndup(filename, (ext - filename) - 1);
if (!name) {
free_object(obj);
return false;
}
NODE_NAME(obj) = name;
obj->type = strdup(ext);
if (!obj->type) {
free_object(obj);
return false;
}
avl_insert(&ctx->objects[type], &obj->node);
return true;
}
static bool read_config_dir(load_ctx_t *ctx, const char *path) {
DIR *dir = opendir(path);
if (!dir)
return false;
int fd = dirfd(dir);
struct dirent *ent;
while ((ent = readdir(dir)) != NULL) {
if (ent->d_type == DT_REG)
read_config_file(ctx, fd, ent->d_name);
}
closedir(dir);
return true;
}
bool read_config(const char *path) {
load_ctx_t ctx;
for (size_t i = 0; i < N_LOAD_TYPES; i++)
avl_init(&ctx.objects[i], avl_strcmp, true, NULL);
bool ret = read_config_dir(&ctx, path);
for (size_t i = 0; i < N_LOAD_TYPES; i++) {
load_object_t *obj;
avl_for_each_element(&ctx.objects[i], obj, node) {
printf("%s(%u): %s\n", obj->type, (unsigned)i, NODE_NAME(obj));
}
}
for (size_t i = 0; i < N_LOAD_TYPES; i++) {
load_object_t *obj, *tmp;
avl_for_each_element_safe(&ctx.objects[i], obj, node, tmp)
free_object(obj);
}
return ret;
}
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