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/*
* Copyright 2015 Robert Foss . All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* - Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* - Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the
* distribution .
* - Neither the name of the copyright holders nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT ,
* INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES
* ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT ,
* STRICT LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE )
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE .
*
* @ author Robert Foss < dev @ robertfoss . se >
*/
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# include "module.h"
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# include "lauxlib.h"
# include "platform.h"
# include "c_stdlib.h"
# include "c_string.h"
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# include "ctype.h"
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# include "user_interface.h"
# include "espconn.h"
# include "flash_fs.h"
# define MIN(x, y) (((x) < (y)) ? (x) : (y))
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# define ENDUSER_SETUP_ERR_FATAL (1 << 0)
# define ENDUSER_SETUP_ERR_NONFATAL (1 << 1)
# define ENDUSER_SETUP_ERR_NO_RETURN (1 << 2)
# define ENDUSER_SETUP_ERR_OUT_OF_MEMORY 1
# define ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND 2
# define ENDUSER_SETUP_ERR_UNKOWN_ERROR 3
# define ENDUSER_SETUP_ERR_SOCKET_ALREADY_OPEN 4
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/**
* DNS Response Packet :
*
* | DNS ID - 16 bits |
* | dns_header |
* | QNAME |
* | dns_body |
* | ip - 32 bits |
*
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* DNS Header Part | FLAGS | | Q COUNT | | A CNT | | AUTH CNT | | ADD CNT | */
static const char dns_header [ ] = { 0x80 , 0x00 , 0x00 , 0x01 , 0x00 , 0x01 , 0x00 , 0x00 , 0x00 , 0x00 } ;
/* DNS Query Part | Q TYPE | | Q CLASS| */
static const char dns_body [ ] = { 0x00 , 0x01 , 0x00 , 0x01 ,
/* DNS Answer Part |LBL OFFS| | TYPE | | CLASS | | TTL | | RD LEN | */
0xC0 , 0x0C , 0x00 , 0x01 , 0x00 , 0x01 , 0x00 , 0x00 , 0x00 , 0x78 , 0x00 , 0x04 } ;
static const char http_html_filename [ ] = " index.html " ;
static const char http_header_200 [ ] = " HTTP/1.1 200 OK \r \n Content-Type: text/html \r \n \r \n " ;
static const char http_header_404 [ ] = " HTTP/1.1 404 Not Found \r \n " ;
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static const char http_html_backup [ ] = " <!DOCTYPE html><html><head><meta charset=utf-8><meta name=viewport content='width=380'><title>Connect gadget to you WiFi</title><style media=screen type=text/css>*{margin:0;padding:0}html{height:100%;background:linear-gradient(rgba(196,102,0,.2),rgba(155,89,182,.2)),url(data:image/png;base64,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)}body{font-family:arial,verdana}div{position:absolute;margin:auto;top:0;right:0;bottom:0;left:0;width:320px;height:274px}form{width:320px;text-align:center;position:relative}form fieldset{background:#fff;border:0 none;border-radius:5px;box-shadow:0 0 15px 1px rgba(0,0,0,.4);padding:20px 30px;box-sizing:border-box}form input{padding:15px;border:1px solid #ccc;border-radius:3px;margin-bottom:10px;width:100%;box-sizing:border-box;font-family:montserrat;color:#2C3E50;font-size:13px}form .action-button{width:100px;background:#27AE60;font-weight:700;color:#fff;border:0 none;border-radius:3px;cursor:pointer;padding:10px 5px;margin:10px 5px}#msform .action-button:focus,form .action-button:hover{box-shadow:0 0 0 2px #fff,0 0 0 3px #27AE60}.fs-title{font-size:15px;text-transform:uppercase;color:#2C3E50;margin-bottom:10px}.fs-subtitle{font-weight:400;font-size:13px;color:#666;margin-bottom:20px}</style><body><div><form method='post'><fieldset><h2 class=fs-title>WiFi Login</h2><h3 class=fs-subtitle>Connect gadget to your WiFi</h3><input autocorrect=off autocapitalize=none name=wifi_ssid placeholder='WiFi Name'> <input type=password name=wifi_password placeholder='Password'1> <input type=submit name=save class='submit action-button' value='Save'></fieldset></form></div> " ;
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typedef struct
{
lua_State * lua_L ;
struct espconn * espconn_dns_udp ;
struct espconn * espconn_http_tcp ;
char * http_payload_data ;
uint32_t http_payload_len ;
os_timer_t check_station_timer ;
int lua_connected_cb_ref ;
int lua_err_cb_ref ;
int lua_dbg_cb_ref ;
} enduser_setup_state_t ;
static enduser_setup_state_t * state ;
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static int enduser_setup_start ( lua_State * L ) ;
static int enduser_setup_stop ( lua_State * L ) ;
static void enduser_setup_station_start ( void ) ;
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static void enduser_setup_station_start ( void ) ;
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static void enduser_setup_ap_start ( void ) ;
static void enduser_setup_ap_stop ( void ) ;
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static void enduser_setup_check_station ( void * p ) ;
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static void enduser_setup_debug ( lua_State * L , const char * str ) ;
# define ENDUSER_SETUP_DEBUG_ENABLE 0
# if ENDUSER_SETUP_DEBUG_ENABLE
# define ENDUSER_SETUP_DEBUG(l, str) enduser_setup_debug(l, str)
# else
# define ENDUSER_SETUP_DEBUG(l, str)
# endif
static void enduser_setup_debug ( lua_State * L , const char * str )
{
if ( state ! = NULL & & L ! = NULL & & state - > lua_dbg_cb_ref ! = LUA_NOREF )
{
lua_rawgeti ( L , LUA_REGISTRYINDEX , state - > lua_dbg_cb_ref ) ;
lua_pushstring ( L , str ) ;
lua_call ( L , 1 , 0 ) ;
}
}
# define ENDUSER_SETUP_ERROR(str, err, err_severity) if (err_severity & ENDUSER_SETUP_ERR_FATAL) enduser_setup_stop(state->lua_L);\
enduser_setup_error ( state - > lua_L , str , err ) ; \
if ( ! ( err_severity & ENDUSER_SETUP_ERR_NO_RETURN ) ) return err
# define ENDUSER_SETUP_ERROR_VOID(str, err, err_severity) if (err_severity & ENDUSER_SETUP_ERR_FATAL) enduser_setup_stop(state->lua_L);\
enduser_setup_error ( state - > lua_L , str , err ) ; \
if ( ! ( err_severity & ENDUSER_SETUP_ERR_NO_RETURN ) ) return
static void enduser_setup_error ( lua_State * L , const char * str , int err )
{
ENDUSER_SETUP_DEBUG ( L , " enduser_setup_error " ) ;
if ( state ! = NULL & & L ! = NULL & & state - > lua_err_cb_ref ! = LUA_NOREF )
{
lua_rawgeti ( L , LUA_REGISTRYINDEX , state - > lua_err_cb_ref ) ;
lua_pushnumber ( L , err ) ;
lua_pushstring ( L , str ) ;
lua_call ( L , 2 , 0 ) ;
}
}
static void enduser_setup_connected_callback ( lua_State * L )
{
ENDUSER_SETUP_DEBUG ( L , " enduser_setup_connected_callback " ) ;
if ( state ! = NULL & & L ! = NULL & & state - > lua_connected_cb_ref ! = LUA_NOREF )
{
lua_rawgeti ( L , LUA_REGISTRYINDEX , state - > lua_connected_cb_ref ) ;
lua_call ( L , 0 , 0 ) ;
}
}
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static void enduser_setup_check_station_start ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_check_station_start " ) ;
os_timer_setfn ( & ( state - > check_station_timer ) , enduser_setup_check_station , NULL ) ;
os_timer_arm ( & ( state - > check_station_timer ) , 1 * 1000 , TRUE ) ;
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}
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static void enduser_setup_check_station_stop ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_check_station_stop " ) ;
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os_timer_disarm ( & ( state - > check_station_timer ) ) ;
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}
/**
* Check Station
*
* Check that we ' ve successfully entered station mode .
*/
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static void enduser_setup_check_station ( void * p )
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{
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( void ) p ;
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struct ip_info ip ;
c_memset ( & ip , 0 , sizeof ( struct ip_info ) ) ;
wifi_get_ip_info ( STATION_IF , & ip ) ;
int i ;
char has_ip = 0 ;
for ( i = 0 ; i < sizeof ( struct ip_info ) ; + + i )
{
has_ip | = ( ( char * ) & ip ) [ i ] ;
}
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if ( has_ip = = 0 )
{
return ;
}
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struct station_config cnf ;
wifi_station_get_config ( & cnf ) ;
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enduser_setup_connected_callback ( state - > lua_L ) ;
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enduser_setup_stop ( NULL ) ;
}
/**
* Search String
*
* Search string for first occurance of any char in srch_str .
*
* @ return - 1 iff no occurance of char was found .
*/
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static int enduser_setup_srch_str ( const char * str , const char * srch_str )
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{
int srch_str_len = c_strlen ( srch_str ) ;
int first_hit = INT_MAX ;
int i ;
for ( i = 0 ; i < srch_str_len ; + + i )
{
char * char_ptr = strchr ( str , srch_str [ i ] ) ;
if ( char_ptr = = NULL )
{
continue ;
}
int char_idx = char_ptr - str ;
first_hit = MIN ( first_hit , char_idx ) ;
}
if ( first_hit = = INT_MAX )
{
return - 1 ;
}
return first_hit ;
}
/**
* Load HTTP Payload
*
* @ return - 0 iff payload loaded successfully
* 1 iff backup html was loaded
* 2 iff out of memory
*/
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static int enduser_setup_http_load_payload ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_load_payload " ) ;
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int f = fs_open ( http_html_filename , fs_mode2flag ( " r " ) ) ;
int err = fs_seek ( f , 0 , FS_SEEK_END ) ;
int file_len = ( int ) fs_tell ( f ) ;
int err2 = fs_seek ( f , 0 , FS_SEEK_SET ) ;
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if ( f = = 0 | | err = = - 1 | | err2 = = - 1 )
{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_load_payload unable to load file index.html, loading backup HTML. " ) ;
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int payload_len = sizeof ( http_header_200 ) + sizeof ( http_html_backup ) ;
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state - > http_payload_len = payload_len ;
state - > http_payload_data = ( char * ) c_malloc ( payload_len ) ;
if ( state - > http_payload_data = = NULL )
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{
return 2 ;
}
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int offset = 0 ;
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c_memcpy ( & ( state - > http_payload_data [ offset ] ) , & ( http_header_200 ) , sizeof ( http_header_200 ) ) ;
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offset + = sizeof ( http_header_200 ) ;
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c_memcpy ( & ( state - > http_payload_data [ offset ] ) , & ( http_html_backup ) , sizeof ( http_html_backup ) ) ;
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return 1 ;
}
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int payload_len = sizeof ( http_header_200 ) + file_len ;
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state - > http_payload_len = payload_len ;
state - > http_payload_data = ( char * ) c_malloc ( payload_len ) ;
if ( state - > http_payload_data = = NULL )
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{
return 2 ;
}
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int offset = 0 ;
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c_memcpy ( & ( state - > http_payload_data [ offset ] ) , & ( http_header_200 ) , sizeof ( http_header_200 ) ) ;
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offset + = sizeof ( http_header_200 ) ;
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fs_read ( f , & ( state - > http_payload_data [ offset ] ) , file_len ) ;
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return 0 ;
}
/**
* De - escape URL data
*
* Parse escaped and form encoded data of request .
*/
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static void enduser_setup_http_urldecode ( char * dst , const char * src , int src_len )
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{
char a , b ;
int i ;
for ( i = 0 ; i < src_len & & * src ; + + i )
{
if ( ( * src = = ' % ' ) & & ( ( a = src [ 1 ] ) & & ( b = src [ 2 ] ) ) & & ( isxdigit ( a ) & & isxdigit ( b ) ) )
{
if ( a > = ' a ' )
{
a - = ' a ' - ' A ' ;
}
if ( a > = ' A ' )
{
a - = ( ' A ' - 10 ) ;
}
else
{
a - = ' 0 ' ;
}
if ( b > = ' a ' )
{
b - = ' a ' - ' A ' ;
}
if ( b > = ' A ' )
{
b - = ( ' A ' - 10 ) ;
}
else
{
b - = ' 0 ' ;
}
* dst + + = 16 * a + b ;
src + = 3 ;
i + = 2 ;
} else {
char c = * src + + ;
if ( c = = ' + ' )
{
c = ' ' ;
}
* dst + + = c ;
}
}
* dst + + = ' \0 ' ;
}
/**
* Handle HTTP Credentials
*
* @ return - return 0 iff credentials are found and handled successfully
* return 1 iff credentials aren ' t found
* return 2 iff an error occured
*/
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static int enduser_setup_http_handle_credentials ( char * data , unsigned short data_len )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_handle_credentials " ) ;
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char * name_str = ( char * ) ( ( uint32_t ) strstr ( & ( data [ 6 ] ) , " wifi_ssid= " ) ) ;
char * pwd_str = ( char * ) ( ( uint32_t ) strstr ( & ( data [ 6 ] ) , " wifi_password= " ) ) ;
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if ( name_str = = NULL | | pwd_str = = NULL )
{
return 1 ;
}
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int name_field_len = sizeof ( " wifi_ssid= " ) - 1 ;
int pwd_field_len = sizeof ( " wifi_password= " ) - 1 ;
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char * name_str_start = name_str + name_field_len ;
char * pwd_str_start = pwd_str + pwd_field_len ;
int name_str_len = enduser_setup_srch_str ( name_str_start , " & " ) ;
int pwd_str_len = enduser_setup_srch_str ( pwd_str_start , " & " ) ;
if ( name_str_len = = - 1 | | pwd_str_len = = - 1 | | name_str_len > 31 | | pwd_str_len > 63 )
{
return 1 ;
}
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struct station_config cnf ;
c_memset ( & cnf , 0 , sizeof ( struct station_config ) ) ;
enduser_setup_http_urldecode ( cnf . ssid , name_str_start , name_str_len ) ;
enduser_setup_http_urldecode ( cnf . password , pwd_str_start , pwd_str_len ) ;
int err = wifi_set_opmode ( STATION_MODE | wifi_get_opmode ( ) ) ;
if ( err = = FALSE )
{
wifi_set_opmode ( ~ STATION_MODE & wifi_get_opmode ( ) ) ;
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ENDUSER_SETUP_ERROR ( " enduser_setup_station_start failed. wifi_set_opmode failed. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
err = wifi_station_set_config ( & cnf ) ;
if ( err = = FALSE )
{
wifi_set_opmode ( ~ STATION_MODE & wifi_get_opmode ( ) ) ;
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ENDUSER_SETUP_ERROR ( " enduser_setup_station_start failed. wifi_station_set_config failed. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
err = wifi_station_disconnect ( ) ;
if ( err = = FALSE )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_station_start failed. wifi_station_disconnect failed. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
err = wifi_station_connect ( ) ;
if ( err = = FALSE )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_station_start failed. wifi_station_connect failed. \n " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " WiFi Credentials Stored " ) ;
ENDUSER_SETUP_DEBUG ( state - > lua_L , " ----------------------- " ) ;
ENDUSER_SETUP_DEBUG ( state - > lua_L , " name: " ) ;
ENDUSER_SETUP_DEBUG ( state - > lua_L , cnf . ssid ) ;
ENDUSER_SETUP_DEBUG ( state - > lua_L , " pass: " ) ;
ENDUSER_SETUP_DEBUG ( state - > lua_L , cnf . password ) ;
ENDUSER_SETUP_DEBUG ( state - > lua_L , " ----------------------- " ) ;
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return 0 ;
}
/**
* Serve HTML
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*
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* @ return - return 0 iff html was served successfully
*/
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static int enduser_setup_http_serve_header ( struct espconn * http_client , char * header , uint32_t header_len )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_serve_404 " ) ;
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int8_t err = espconn_sent ( http_client , header , header_len ) ;
if ( err = = ESPCONN_MEM )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_serve_header failed. espconn_send out of memory " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
else if ( err = = ESPCONN_ARG )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_serve_header failed. espconn_send can't find network transmission " , ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
else if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_serve_header failed. espconn_send failed " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
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return 0 ;
}
/**
* Serve HTML
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*
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* @ return - return 0 iff html was served successfully
*/
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static int enduser_setup_http_serve_html ( struct espconn * http_client )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_serve_html " ) ;
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if ( state - > http_payload_data = = NULL )
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{
enduser_setup_http_load_payload ( ) ;
}
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int8_t err = espconn_sent ( http_client , state - > http_payload_data , state - > http_payload_len ) ;
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if ( err = = ESPCONN_MEM )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_serve_html failed. espconn_send out of memory " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
else if ( err = = ESPCONN_ARG )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_serve_html failed. espconn_send can't find network transmission " , ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
else if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_serve_html failed. espconn_send failed " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
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return 0 ;
}
/**
* Disconnect HTTP client
*
* End TCP connection and free up resources .
*/
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static void enduser_setup_http_disconnect ( struct espconn * espconn )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_disconnect " ) ;
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//TODO: Construct and maintain os task queue(?) to be able to issue system_os_task with espconn_disconnect.
}
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static void enduser_setup_http_recvcb ( void * arg , char * data , unsigned short data_len )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_recvcb " ) ;
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struct espconn * http_client = ( struct espconn * ) arg ;
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int retval ;
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if ( c_strncmp ( data , " POST " , 5 ) = = 0 )
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{
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retval = enduser_setup_http_handle_credentials ( data , data_len ) ;
if ( retval = = 0 )
{
enduser_setup_http_serve_header ( http_client , ( char * ) http_header_200 , sizeof ( http_header_200 ) ) ;
enduser_setup_http_disconnect ( http_client ) ;
return ;
}
else if ( retval = = 2 )
{
ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_http_recvcb failed. Failed to handle wifi credentials. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
}
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if ( retval ! = 1 )
{
ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_http_recvcb failed. Unknown error code. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
}
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}
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else if ( c_strncmp ( data , " GET " , 4 ) = = 0 )
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{
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/* Reject requests that probably aren't relevant to free up resources. */
if ( c_strncmp ( data , " GET / " , 6 ) ! = 0 )
{
ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_recvcb received too specific request. " ) ;
enduser_setup_http_serve_header ( http_client , ( char * ) http_header_404 , sizeof ( http_header_404 ) ) ;
enduser_setup_http_disconnect ( http_client ) ;
return ;
}
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retval = enduser_setup_http_serve_html ( http_client ) ;
if ( retval ! = 0 )
{
enduser_setup_http_disconnect ( http_client ) ;
ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_http_recvcb failed. Unable to send HTML. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
}
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}
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else
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{
enduser_setup_http_serve_header ( http_client , ( char * ) http_header_404 , sizeof ( http_header_404 ) ) ;
enduser_setup_http_disconnect ( http_client ) ;
return ;
}
}
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static void enduser_setup_http_connectcb ( void * arg )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_connectcb " ) ;
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struct espconn * callback_espconn = ( struct espconn * ) arg ;
int8_t err = 0 ;
err | = espconn_regist_recvcb ( callback_espconn , enduser_setup_http_recvcb ) ;
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if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_http_connectcb failed. Callback registration failed. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
}
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static int enduser_setup_http_start ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_start " ) ;
state - > espconn_http_tcp = ( struct espconn * ) c_malloc ( sizeof ( struct espconn ) ) ;
if ( state - > espconn_http_tcp = = NULL )
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{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Memory allocation failed (espconn_http_tcp == NULL). " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
esp_tcp * esp_tcp_data = ( esp_tcp * ) c_malloc ( sizeof ( esp_tcp ) ) ;
if ( esp_tcp_data = = NULL )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Memory allocation failed (esp_udp == NULL). " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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c_memset ( state - > espconn_http_tcp , 0 , sizeof ( struct espconn ) ) ;
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c_memset ( esp_tcp_data , 0 , sizeof ( esp_tcp ) ) ;
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state - > espconn_http_tcp - > proto . tcp = esp_tcp_data ;
state - > espconn_http_tcp - > type = ESPCONN_TCP ;
state - > espconn_http_tcp - > state = ESPCONN_NONE ;
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esp_tcp_data - > local_port = 80 ;
int8_t err ;
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err = espconn_regist_connectcb ( state - > espconn_http_tcp , enduser_setup_http_connectcb ) ;
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if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Couldn't add receive callback. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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err = espconn_accept ( state - > espconn_http_tcp ) ;
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if ( err = = ESPCONN_ISCONN )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Couldn't create connection, already listening for that connection. " , ENDUSER_SETUP_ERR_SOCKET_ALREADY_OPEN , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err = = ESPCONN_MEM )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Couldn't create connection, out of memory. " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err = = ESPCONN_ARG )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Can't find connection from espconn argument " , ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Unknown error " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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err = espconn_regist_time ( state - > espconn_http_tcp , 2 , 0 ) ;
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if ( err = = ESPCONN_ARG )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Unable to set TCP timeout. " , ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND , ENDUSER_SETUP_ERR_NONFATAL | ENDUSER_SETUP_ERR_NO_RETURN ) ;
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}
err = enduser_setup_http_load_payload ( ) ;
if ( err = = 1 )
{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_start info. Loaded backup HTML. " ) ;
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}
else if ( err = = 2 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_http_start failed. Unable to allocate memory for HTTP payload. " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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return 0 ;
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}
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static void enduser_setup_http_stop ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_http_stop " ) ;
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if ( state ! = NULL & & state - > espconn_http_tcp ! = NULL )
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{
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espconn_delete ( state - > espconn_http_tcp ) ;
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}
}
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static void enduser_setup_ap_stop ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_station_stop " ) ;
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wifi_set_opmode ( ~ SOFTAP_MODE & wifi_get_opmode ( ) ) ;
}
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static void enduser_setup_ap_start ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_ap_start " ) ;
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struct softap_config cnf ;
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c_memset ( & ( cnf ) , 0 , sizeof ( struct softap_config ) ) ;
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# ifndef ENDUSER_SETUP_AP_SSID
# define ENDUSER_SETUP_AP_SSID "SetupGadget"
# endif
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char ssid [ ] = ENDUSER_SETUP_AP_SSID ;
int ssid_name_len = c_strlen ( ENDUSER_SETUP_AP_SSID ) ;
c_memcpy ( & ( cnf . ssid ) , ssid , ssid_name_len ) ;
uint8_t mac [ 6 ] ;
wifi_get_macaddr ( SOFTAP_IF , mac ) ;
cnf . ssid [ ssid_name_len ] = ' _ ' ;
cnf . ssid [ ssid_name_len + 1 ] = ( char ) ( 65 + ( 0x0F & mac [ 3 ] ) ) ;
cnf . ssid [ ssid_name_len + 2 ] = ( char ) ( 65 + ( ( 0xF0 & mac [ 3 ] ) > > 4 ) ) ;
cnf . ssid [ ssid_name_len + 3 ] = ( char ) ( 65 + ( 0x0F & mac [ 4 ] ) ) ;
cnf . ssid [ ssid_name_len + 4 ] = ( char ) ( 65 + ( ( 0xF0 & mac [ 4 ] ) > > 4 ) ) ;
cnf . ssid [ ssid_name_len + 5 ] = ( char ) ( 65 + ( 0x0F & mac [ 5 ] ) ) ;
cnf . ssid [ ssid_name_len + 6 ] = ( char ) ( 65 + ( ( 0xF0 & mac [ 5 ] ) > > 4 ) ) ;
cnf . ssid_len = c_strlen ( ssid ) + 7 ;
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cnf . channel = 1 ;
cnf . authmode = AUTH_OPEN ;
cnf . ssid_hidden = 0 ;
cnf . max_connection = 5 ;
cnf . beacon_interval = 100 ;
wifi_softap_set_config ( & cnf ) ;
wifi_set_opmode ( SOFTAP_MODE | wifi_get_opmode ( ) ) ;
}
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static void enduser_setup_dns_recv_callback ( void * arg , char * recv_data , unsigned short recv_len )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_dns_recv_callback. " ) ;
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struct espconn * callback_espconn = arg ;
struct ip_info ip_info ;
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uint32_t qname_len = c_strlen ( & ( recv_data [ 12 ] ) ) + 1 ; // \0=1byte
uint32_t dns_reply_static_len = ( uint32_t ) sizeof ( dns_header ) + ( uint32_t ) sizeof ( dns_body ) + 2 + 4 ; // dns_id=2bytes, ip=4bytes
uint32_t dns_reply_len = dns_reply_static_len + qname_len ;
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uint8_t if_mode = wifi_get_opmode ( ) ;
if ( ( if_mode & SOFTAP_MODE ) = = 0 )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. Interface mode not supported. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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uint8_t if_index = ( if_mode = = STATION_MODE ? STATION_IF : SOFTAP_IF ) ;
if ( wifi_get_ip_info ( if_index , & ip_info ) = = false )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. Unable to get interface IP. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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char * dns_reply = ( char * ) c_malloc ( dns_reply_len ) ;
if ( dns_reply = = NULL )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. Failed to allocate memory. " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_NONFATAL ) ;
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}
uint32_t insert_byte = 0 ;
c_memcpy ( & ( dns_reply [ insert_byte ] ) , recv_data , 2 ) ;
insert_byte + = 2 ;
c_memcpy ( & ( dns_reply [ insert_byte ] ) , dns_header , sizeof ( dns_header ) ) ;
insert_byte + = ( uint32_t ) sizeof ( dns_header ) ;
c_memcpy ( & ( dns_reply [ insert_byte ] ) , & ( recv_data [ 12 ] ) , qname_len ) ;
insert_byte + = qname_len ;
c_memcpy ( & ( dns_reply [ insert_byte ] ) , dns_body , sizeof ( dns_body ) ) ;
insert_byte + = ( uint32_t ) sizeof ( dns_body ) ;
c_memcpy ( & ( dns_reply [ insert_byte ] ) , & ( ip_info . ip ) , 4 ) ;
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// SDK 1.4.0 changed behaviour, for UDP server need to look up remote ip/port
remot_info * pr = 0 ;
if ( espconn_get_connection_info ( callback_espconn , & pr , 0 ) ! = ESPCONN_OK )
{
ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. Unable to get IP of UDP sender. " , ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND , ENDUSER_SETUP_ERR_FATAL ) ;
}
callback_espconn - > proto . udp - > remote_port = pr - > remote_port ;
os_memmove ( callback_espconn - > proto . udp - > remote_ip , pr - > remote_ip , 4 ) ;
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int8_t err ;
err = espconn_sent ( callback_espconn , dns_reply , dns_reply_len ) ;
c_free ( dns_reply ) ;
if ( err = = ESPCONN_MEM )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. Failed to allocate memory for send. " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err = = ESPCONN_ARG )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. Can't execute transmission. " , ENDUSER_SETUP_ERR_CONNECTION_NOT_FOUND , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR_VOID ( " enduser_setup_dns_recv_callback failed. espconn_send failed " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
}
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static void enduser_setup_free ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_free " ) ;
if ( state = = NULL )
{
return ;
}
if ( state - > espconn_dns_udp ! = NULL )
{
if ( state - > espconn_dns_udp - > proto . udp ! = NULL )
{
c_free ( state - > espconn_dns_udp - > proto . udp ) ;
}
c_free ( state - > espconn_dns_udp ) ;
}
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if ( state - > espconn_http_tcp ! = NULL )
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{
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if ( state - > espconn_http_tcp - > proto . tcp ! = NULL )
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{
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c_free ( state - > espconn_http_tcp - > proto . tcp ) ;
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}
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c_free ( state - > espconn_http_tcp ) ;
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}
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c_free ( state - > http_payload_data ) ;
c_free ( state ) ;
state = NULL ;
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}
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static int enduser_setup_dns_start ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_dns_start " ) ;
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if ( state - > espconn_dns_udp ! = NULL )
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{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Appears to already be started (espconn_dns_udp != NULL). " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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state - > espconn_dns_udp = ( struct espconn * ) c_malloc ( sizeof ( struct espconn ) ) ;
if ( state - > espconn_dns_udp = = NULL )
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{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Memory allocation failed (espconn_dns_udp == NULL). " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
esp_udp * esp_udp_data = ( esp_udp * ) c_malloc ( sizeof ( esp_udp ) ) ;
if ( esp_udp_data = = NULL )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Memory allocation failed (esp_udp == NULL). " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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c_memset ( state - > espconn_dns_udp , 0 , sizeof ( struct espconn ) ) ;
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c_memset ( esp_udp_data , 0 , sizeof ( esp_udp ) ) ;
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state - > espconn_dns_udp - > proto . udp = esp_udp_data ;
state - > espconn_dns_udp - > type = ESPCONN_UDP ;
state - > espconn_dns_udp - > state = ESPCONN_NONE ;
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esp_udp_data - > local_port = 53 ;
int8_t err ;
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err = espconn_regist_recvcb ( state - > espconn_dns_udp , enduser_setup_dns_recv_callback ) ;
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if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Couldn't add receive callback, unknown error. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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err = espconn_create ( state - > espconn_dns_udp ) ;
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if ( err = = ESPCONN_ISCONN )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Couldn't create connection, already listening for that connection. " , ENDUSER_SETUP_ERR_SOCKET_ALREADY_OPEN , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err = = ESPCONN_MEM )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Couldn't create connection, out of memory. " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY , ENDUSER_SETUP_ERR_FATAL ) ;
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}
else if ( err ! = 0 )
{
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ENDUSER_SETUP_ERROR ( " enduser_setup_dns_start failed. Couldn't create connection, unknown error. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR , ENDUSER_SETUP_ERR_FATAL ) ;
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}
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return 0 ;
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}
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static void enduser_setup_dns_stop ( void )
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{
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ENDUSER_SETUP_DEBUG ( state - > lua_L , " enduser_setup_dns_stop " ) ;
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if ( state - > espconn_dns_udp ! = NULL )
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{
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espconn_delete ( state - > espconn_dns_udp ) ;
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}
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}
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static int enduser_setup_init ( lua_State * L )
{
ENDUSER_SETUP_DEBUG ( L , " enduser_setup_init " ) ;
if ( state ! = NULL )
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{
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enduser_setup_error ( L , " enduser_setup_init failed. Appears to already be started. " , ENDUSER_SETUP_ERR_UNKOWN_ERROR ) ;
return ENDUSER_SETUP_ERR_UNKOWN_ERROR ;
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}
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state = ( enduser_setup_state_t * ) os_malloc ( sizeof ( enduser_setup_state_t ) ) ;
if ( state = = NULL )
{
enduser_setup_error ( L , " enduser_setup_init failed. Unable to allocate memory. " , ENDUSER_SETUP_ERR_OUT_OF_MEMORY ) ;
return ENDUSER_SETUP_ERR_OUT_OF_MEMORY ;
}
c_memset ( state , 0 , sizeof ( enduser_setup_state_t ) ) ;
state - > lua_L = L ;
state - > lua_connected_cb_ref = LUA_NOREF ;
state - > lua_err_cb_ref = LUA_NOREF ;
state - > lua_dbg_cb_ref = LUA_NOREF ;
if ( ! lua_isnoneornil ( L , 1 ) )
{
lua_pushvalue ( L , 1 ) ;
state - > lua_connected_cb_ref = luaL_ref ( L , LUA_REGISTRYINDEX ) ;
}
else
{
state - > lua_connected_cb_ref = LUA_NOREF ;
}
if ( ! lua_isnoneornil ( L , 2 ) )
{
lua_pushvalue ( L , 2 ) ;
state - > lua_err_cb_ref = luaL_ref ( L , LUA_REGISTRYINDEX ) ;
}
else
{
state - > lua_err_cb_ref = LUA_NOREF ;
}
if ( ! lua_isnoneornil ( L , 3 ) )
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{
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lua_pushvalue ( L , 3 ) ;
state - > lua_dbg_cb_ref = luaL_ref ( L , LUA_REGISTRYINDEX ) ;
}
else
{
state - > lua_dbg_cb_ref = LUA_NOREF ;
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}
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return 0 ;
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}
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static int enduser_setup_start ( lua_State * L )
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{
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ENDUSER_SETUP_DEBUG ( L , " enduser_setup_start " ) ;
if ( enduser_setup_init ( L ) )
{
enduser_setup_stop ( L ) ;
return 0 ;
}
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enduser_setup_check_station_start ( ) ;
enduser_setup_ap_start ( ) ;
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if ( enduser_setup_dns_start ( ) )
{
enduser_setup_stop ( L ) ;
return 0 ;
}
if ( enduser_setup_http_start ( ) )
{
enduser_setup_stop ( L ) ;
return 0 ;
}
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return 0 ;
}
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static int enduser_setup_stop ( lua_State * L )
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{
enduser_setup_check_station_stop ( ) ;
enduser_setup_ap_stop ( ) ;
enduser_setup_dns_stop ( ) ;
enduser_setup_http_stop ( ) ;
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enduser_setup_free ( ) ;
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return 0 ;
}
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static const LUA_REG_TYPE enduser_setup_map [ ] = {
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{ LSTRKEY ( " start " ) , LFUNCVAL ( enduser_setup_start ) } ,
{ LSTRKEY ( " stop " ) , LFUNCVAL ( enduser_setup_stop ) } ,
{ LNILKEY , LNILVAL }
} ;
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NODEMCU_MODULE ( ENDUSER_SETUP , " enduser_setup " , enduser_setup_map , NULL ) ;
