static char *to_string(const json_value *value)
{
if (value->type == json_string)
{
return ss_strndup(value->u.string.ptr, value->u.string.length);
}
else if (value->type == json_integer)
{
#ifdef __MINGW32__
return strdup(ss_itoa(value->u.integer));
#else
return strdup(itoa(value->u.integer));
#endif
}
else if (value->type == json_null)
{
return "null";
}
else
{
LOGE("%d", value->type);
FATAL("Invalid config format.");
}
return 0;
}
void parse_addr(const char *str, ss_addr_t *addr)
{
int ret = -1, n = 0;
char *pch;
pch = strchr(str, ':');
while (pch != NULL)
{
n++;
ret = pch - str;
pch = strchr(pch + 1, ':');
}
if (n > 1) {
if (strcmp(str+ret, "]") != 0)
{
ret = -1;
}
}
if (ret == -1)
{
addr->host = strdup(str);
addr->port = NULL;
}
else
{
addr->host = ss_strndup(str, ret);
addr->port = strdup(str + ret + 1);
}
}
static void parse_addr_cidr(const char *str, char **host, int *cidr)
{
int ret = -1, n = 0;
char *pch;
pch = strchr(str, '/');
while (pch != NULL)
{
n++;
ret = pch - str;
pch = strchr(pch + 1, '/');
}
if (n > 1)
{
if (strcmp(str+ret, "]") != 0)
{
ret = -1;
}
}
if (ret == -1)
{
*host = strdup(str);
*cidr = -1;
}
else
{
*host = ss_strndup(str, ret);
*cidr = atoi(strdup(str + ret + 1));
}
}
void
parse_addr(const char *str, ss_addr_t *addr)
{
int ipv6 = 0, ret = -1, n = 0;
char *pch;
struct cork_ip ip;
if (cork_ip_init(&ip, str) != -1) {
addr->host = strdup(str);
addr->port = NULL;
return;
}
pch = strchr(str, ':');
while (pch != NULL) {
n++;
ret = pch - str;
pch = strchr(pch + 1, ':');
}
if (n > 1) {
ipv6 = 1;
if (str[ret - 1] != ']') {
ret = -1;
}
}
if (ret == -1) {
if (ipv6) {
addr->host = ss_strndup(str + 1, strlen(str) - 2);
} else {
addr->host = strdup(str);
}
addr->port = NULL;
} else {
if (ipv6) {
addr->host = ss_strndup(str + 1, ret - 2);
} else {
addr->host = ss_strndup(str, ret);
}
addr->port = strdup(str + ret + 1);
}
}
jconf_t *read_jconf(const char *file)
{
static jconf_t conf;
char *buf;
json_value *obj;
FILE *f = fopen(file, "rb");
if (f == NULL) {
FATAL("Invalid config path.");
}
fseek(f, 0, SEEK_END);
long pos = ftell(f);
fseek(f, 0, SEEK_SET);
if (pos >= MAX_CONF_SIZE) {
FATAL("Too large config file.");
}
buf = ss_malloc(pos + 1);
if (buf == NULL) {
FATAL("No enough memory.");
}
int nread = fread(buf, pos, 1, f);
if (!nread) {
FATAL("Failed to read the config file.");
}
fclose(f);
buf[pos] = '\0'; // end of string
json_settings settings = { 0UL, 0, NULL, NULL, NULL };
char error_buf[512];
obj = json_parse_ex(&settings, buf, pos, error_buf);
if (obj == NULL) {
FATAL(error_buf);
}
if (obj->type == json_object) {
unsigned int i, j;
for (i = 0; i < obj->u.object.length; i++) {
char *name = obj->u.object.values[i].name;
json_value *value = obj->u.object.values[i].value;
if (strcmp(name, "server") == 0) {
if (value->type == json_array) {
for (j = 0; j < value->u.array.length; j++) {
if (j >= MAX_REMOTE_NUM) {
break;
}
json_value *v = value->u.array.values[j];
parse_addr(to_string(v), conf.remote_addr + j);
conf.remote_num = j + 1;
}
} else if (value->type == json_string) {
conf.remote_addr[0].host = to_string(value);
conf.remote_addr[0].port = NULL;
conf.remote_num = 1;
}
} else if (strcmp(name, "port_password") == 0) {
if (value->type == json_object) {
for (j = 0; j < value->u.object.length; j++) {
if (j >= MAX_PORT_NUM) {
break;
}
json_value *v = value->u.object.values[j].value;
if (v->type == json_string) {
conf.port_password[j].port = ss_strndup(value->u.object.values[j].name,
value->u.object.values[j].name_length);
conf.port_password[j].password = to_string(v);
conf.port_password_num = j + 1;
}
}
}
} else if (strcmp(name, "server_port") == 0) {
conf.remote_port = to_string(value);
} else if (strcmp(name, "local_address") == 0) {
conf.local_addr = to_string(value);
} else if (strcmp(name, "local_port") == 0) {
conf.local_port = to_string(value);
} else if (strcmp(name, "password") == 0) {
conf.password = to_string(value);
} else if (strcmp(name, "method") == 0) {
conf.method = to_string(value);
} else if (strcmp(name, "timeout") == 0) {
conf.timeout = to_string(value);
} else if (strcmp(name, "fast_open") == 0) {
conf.fast_open = value->u.boolean;
} else if (strcmp(name, "auth") == 0) {
conf.auth = value->u.boolean;
} else if (strcmp(name, "nofile") == 0) {
conf.nofile = value->u.integer;
} else if (strcmp(name, "nameserver") == 0) {
conf.nameserver = to_string(value);
}
}
} else {
FATAL("Invalid config file");
}
ss_free(buf);
json_value_free(obj);
return &conf;
}