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hev-fsh-config.c
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hev-fsh-config.c
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/*
============================================================================
Name : hev-fsh-config.c
Author : hev <r@hev.cc>
Copyright : Copyright (c) 2018 - 2023 xyz
Description : Fsh Config
============================================================================
*/
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/utsname.h>
#include <hev-task-dns.h>
#include <hev-task-call.h>
#include <hev-strverscmp.h>
#include "hev-fsh-config.h"
#include "hev-memory-allocator.h"
typedef struct _HevTaskCallResolv HevTaskCallResolv;
typedef struct _HevFshAddrListNode HevFshAddrListNode;
struct _HevFshConfig
{
int mode;
int crypto;
int ip_type;
int log_level;
int ugly_ktls;
const char *server_address;
const char *server_port;
unsigned int timeout;
const char *user;
const char *token;
const char *log_path;
const char *tokens_file;
HevFshAddrListNode *addr_list;
const char *local_address;
unsigned int local_port;
const char *remote_address;
unsigned int remote_port;
HevFshConfigKey key;
};
struct _HevTaskCallResolv
{
HevTaskCall base;
HevFshConfig *config;
socklen_t *len;
};
struct _HevFshAddrListNode
{
HevFshAddrListNode *next;
int type;
int action;
unsigned char addr[16];
unsigned int port;
};
HevFshConfig *
hev_fsh_config_new (void)
{
HevFshConfig *self;
self = hev_malloc0 (sizeof (HevFshConfig));
if (!self) {
fprintf (stderr, "Create fsh config failed!\n");
return NULL;
}
self->timeout = 120;
self->server_port = "6339";
self->local_address = "127.0.0.1";
return self;
}
void
hev_fsh_config_destroy (HevFshConfig *self)
{
HevFshAddrListNode *iter = self->addr_list;
while (iter) {
HevFshAddrListNode *node = iter;
iter = iter->next;
hev_free (node);
}
hev_free (self);
}
int
hev_fsh_config_get_mode (HevFshConfig *self)
{
return self->mode;
}
void
hev_fsh_config_set_mode (HevFshConfig *self, int val)
{
self->mode = val;
switch (val) {
case HEV_FSH_CONFIG_MODE_SERVER:
if (!self->server_address)
self->server_address = "0.0.0.0";
break;
default:
if (!self->server_address)
self->server_address = "127.0.0.1";
break;
}
}
const char *
hev_fsh_config_get_server_address (HevFshConfig *self)
{
return self->server_address;
}
void
hev_fsh_config_set_server_address (HevFshConfig *self, const char *val)
{
self->server_address = val;
}
const char *
hev_fsh_config_get_server_port (HevFshConfig *self)
{
return self->server_port;
}
void
hev_fsh_config_set_server_port (HevFshConfig *self, const char *val)
{
self->server_port = val;
}
const char *
hev_fsh_config_get_tokens_file (HevFshConfig *self)
{
return self->tokens_file;
}
void
hev_fsh_config_set_tokens_file (HevFshConfig *self, const char *val)
{
self->tokens_file = val;
}
const char *
hev_fsh_config_get_token (HevFshConfig *self)
{
return self->token;
}
void
hev_fsh_config_set_token (HevFshConfig *self, const char *val)
{
self->token = val;
}
const char *
hev_fsh_config_get_log_path (HevFshConfig *self)
{
return self->log_path;
}
void
hev_fsh_config_set_log_path (HevFshConfig *self, const char *val)
{
self->log_path = val;
}
int
hev_fsh_config_get_log_level (HevFshConfig *self)
{
return self->log_level;
}
void
hev_fsh_config_set_log_level (HevFshConfig *self, int val)
{
self->log_level = val;
}
int
hev_fsh_config_get_ip_type (HevFshConfig *self)
{
return self->ip_type;
}
void
hev_fsh_config_set_ip_type (HevFshConfig *self, int val)
{
self->ip_type = val;
}
unsigned int
hev_fsh_config_get_timeout (HevFshConfig *self)
{
return self->timeout;
}
void
hev_fsh_config_set_timeout (HevFshConfig *self, unsigned int val)
{
self->timeout = val;
}
HevFshConfigKey *
hev_fsh_config_get_key (HevFshConfig *self)
{
if (self->crypto)
return &self->key;
return NULL;
}
static int
is_ugly_ktls (void)
{
#ifdef __linux__
struct utsname u;
int res;
res = uname (&u);
if (res < 0)
return 1;
/* The kernel TLS with splice syscall is not working before v5.14. */
res = hev_strverscmp (u.release, "5.14");
if (res < 0)
return 1;
#endif
return 0;
}
void
hev_fsh_config_set_key (HevFshConfig *self, HevFshConfigKey *val)
{
if (val) {
self->crypto = 1;
self->ugly_ktls = is_ugly_ktls ();
memcpy (&self->key, val, sizeof (self->key));
} else {
self->crypto = 0;
self->ugly_ktls = 0;
}
}
const char *
hev_fsh_config_get_user (HevFshConfig *self)
{
return self->user;
}
void
hev_fsh_config_set_user (HevFshConfig *self, const char *val)
{
self->user = val;
}
int
hev_fsh_config_addr_list_contains (HevFshConfig *self, int type, void *addr,
unsigned int port)
{
HevFshAddrListNode *iter = self->addr_list;
while (iter) {
if (!iter->type)
return iter->action;
if (type == iter->type && port == iter->port) {
switch (type) {
case 4:
if (0 == memcmp (addr, iter->addr, 4))
return iter->action;
break;
case 6:
if (0 == memcmp (addr, iter->addr, 16))
return iter->action;
break;
}
}
iter = iter->next;
}
return 0;
}
void
hev_fsh_config_addr_list_add (HevFshConfig *self, int type, void *addr,
unsigned int port, int action)
{
HevFshAddrListNode *node;
node = hev_malloc0 (sizeof (HevFshAddrListNode));
if (!node)
return;
node->type = type;
node->port = port;
node->action = action;
switch (type) {
case 4:
memcpy (node->addr, addr, 4);
break;
case 6:
memcpy (node->addr, addr, 16);
break;
}
node->next = self->addr_list;
self->addr_list = node;
}
const char *
hev_fsh_config_get_local_address (HevFshConfig *self)
{
return self->local_address;
}
void
hev_fsh_config_set_local_address (HevFshConfig *self, const char *val)
{
self->local_address = val;
}
unsigned int
hev_fsh_config_get_local_port (HevFshConfig *self)
{
return self->local_port;
}
void
hev_fsh_config_set_local_port (HevFshConfig *self, unsigned int val)
{
self->local_port = val;
}
const char *
hev_fsh_config_get_remote_address (HevFshConfig *self)
{
return self->remote_address;
}
void
hev_fsh_config_set_remote_address (HevFshConfig *self, const char *val)
{
self->remote_address = val;
}
unsigned int
hev_fsh_config_get_remote_port (HevFshConfig *self)
{
return self->remote_port;
}
void
hev_fsh_config_set_remote_port (HevFshConfig *self, unsigned int val)
{
self->remote_port = val;
}
static struct sockaddr *
parse_sockaddr (socklen_t *len, const char *address, int port)
{
static struct sockaddr_storage addr;
struct sockaddr_in *addr4 = (struct sockaddr_in *)&addr;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&addr;
__builtin_bzero (&addr, sizeof (addr));
if (inet_pton (AF_INET, address, &addr4->sin_addr) == 1) {
*len = sizeof (struct sockaddr_in);
addr4->sin_family = AF_INET;
addr4->sin_port = htons (port);
return (struct sockaddr *)addr4;
}
if (inet_pton (AF_INET6, address, &addr6->sin6_addr) == 1) {
*len = sizeof (struct sockaddr_in6);
addr6->sin6_family = AF_INET6;
addr6->sin6_port = htons (port);
return (struct sockaddr *)addr6;
}
return NULL;
}
static void
resolv_entry (HevTaskCall *call)
{
HevTaskCallResolv *resolv = (HevTaskCallResolv *)call;
const char *address = resolv->config->server_address;
const char *port = resolv->config->server_port;
static struct sockaddr_storage addr;
struct addrinfo *res = NULL;
struct addrinfo hints;
int s;
__builtin_bzero (&hints, sizeof (hints));
switch (resolv->config->ip_type) {
case 4:
hints.ai_family = AF_INET;
break;
case 6:
hints.ai_family = AF_INET6;
break;
default:
hints.ai_family = AF_UNSPEC;
break;
}
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
s = hev_task_dns_getaddrinfo (address, port, &hints, &res);
if ((s != 0) || !res) {
hev_task_call_set_retval (call, NULL);
return;
}
*resolv->len = res->ai_addrlen;
memcpy (&addr, res->ai_addr, res->ai_addrlen);
if (res->ai_family == AF_INET6) {
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&addr;
struct in6_addr *pa = &addr6->sin6_addr;
unsigned short *pp = &addr6->sin6_port;
if ((pa->s6_addr[0] == 0x20) && (pa->s6_addr[1] == 0x01) &&
(pa->s6_addr[2] == 0x00) && (pa->s6_addr[3] == 0x00)) {
memcpy (pp, &pa->s6_addr[10], 2);
pa->s6_addr[10] = 0xff;
pa->s6_addr[11] = 0xff;
memset (pa, 0, 10);
}
}
hev_task_call_set_retval (call, &addr);
freeaddrinfo (res);
}
struct sockaddr *
hev_fsh_config_get_server_sockaddr (HevFshConfig *self, socklen_t *len)
{
struct sockaddr *addr;
addr = parse_sockaddr (len, self->server_address, atoi (self->server_port));
if (!addr) {
HevTaskCall *call;
HevTaskCallResolv *resolv;
call = hev_task_call_new (sizeof (HevTaskCallResolv), 16384);
if (!call)
return NULL;
resolv = (HevTaskCallResolv *)call;
resolv->config = self;
resolv->len = len;
addr = hev_task_call_jump (call, resolv_entry);
hev_task_call_destroy (call);
}
return addr;
}
struct sockaddr *
hev_fsh_config_get_local_sockaddr (HevFshConfig *self, socklen_t *len)
{
return parse_sockaddr (len, self->local_address, self->local_port);
}
int
hev_fsh_config_is_ugly_ktls (HevFshConfig *self)
{
return self->ugly_ktls;
}