configServer.c
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/**@file
* @brief Definitions for the configuration HTTP server
* @author Imanol Barba Sabariego
* @date 08/06/2014
*
* This is where all the methods previously declared in configServer.h are defined.
*/
#include "configServer.h"
//! POST variable for Wi-Fi network name
char arg_networkNameStr[100];
//! POST variable for Wi-Fi network passphrase
char arg_passphraseStr[100];
//! POST variable for Wi-Fi network security type
char arg_securityTypeStr[100];
//! POST variable for RADIUS username
char arg_radUserStr[100];
//! POST variable for RADIUS password
char arg_radPassStr[100];
//! POST variable for geolocalization coordinates (i.e: 41.557255 2.096183)
char arg_geoLocalizationStr[100];
//! Timer for device reboot
wismart_timer_t rebootTimer;
//! This is the array that stores the http resources
wismart_server_resource_t configServerResources[22];
void configServer_start(uint8_t enableApScan)
{
configServer_buildResources();
libwismart_server_start(80, "WismartServer", configServer_dynamicCb, chHeapFree, configServerResources);
}
void configServer_connect()
{
libwismart_server_connect();
}
void configServer_reboot()
{
libwismart_TimerSet(&rebootTimer, 5000, configServer_rebootTimerHandler, NULL);
}
void configServer_rebootTimerHandler(void *arg)
{
libwismart_Reboot();
}
void configServer_setClientParameters()
{
char asciiBuf[20];
libwismart_server_GET("networkName", arg_networkNameStr, sizeof(arg_networkNameStr));
libwismart_server_GET("passphrase", arg_passphraseStr, sizeof(arg_passphraseStr));
libwismart_server_GET("securityType", arg_securityTypeStr, sizeof(arg_securityTypeStr));
libwismart_server_GET("radUser", arg_radUserStr, sizeof(arg_radUserStr));
libwismart_server_GET("radPass", arg_radPassStr, sizeof(arg_radPassStr));
libwismart_server_GET("geoloc", arg_geoLocalizationStr, sizeof(arg_geoLocalizationStr));
CONFIG_SERVER_DBG("The following client settings where retrieved:\r\n");
CONFIG_SERVER_DBG("networkName : %s\r\n",arg_networkNameStr);
CONFIG_SERVER_DBG("securityType : %s\r\n",arg_securityTypeStr);
CONFIG_SERVER_DBG("passphrase : %s\r\n",arg_passphraseStr);
CONFIG_SERVER_DBG("radUser : %s\r\n",arg_radUserStr);
CONFIG_SERVER_DBG("radPass : %s\r\n",arg_radPassStr);
CONFIG_SERVER_DBG("geoloc : %s\r\n",arg_geoLocalizationStr);
config_params_t config;
strcpy(config.user,arg_radUserStr);
strcpy(config.password,arg_radPassStr);
strcpy(config.localization,arg_geoLocalizationStr);
strcpy(config.ssid,arg_networkNameStr);
strcpy(config.wepkey,arg_passphraseStr);
strcpy(config.passphrase,arg_passphraseStr);
/* Value validation */
if((strlen((char*)arg_networkNameStr) > 32) || (strlen((char*)arg_networkNameStr) == 0))
{
CONFIG_SERVER_DBG_WARNING("Invalid network name![%s]\r\n",(char*)arg_networkNameStr);
strcpy(config.ssid,"modularsense");
}
if(strcmp((char*)arg_securityTypeStr, SECURITY_TYPE_OPEN) == 0)
{
/* OPEN ----------------------------------------------------------- */
config.security = (uint16_t) PROFILE_SECURITY_OPEN;
}
else if(strcmp((char*)arg_securityTypeStr, SECURITY_TYPE_WPA) == 0)
{
/* WPA ------------------------------------------------------------- */
if((strlen((char*)arg_passphraseStr) < 8) || (strlen((char*)arg_passphraseStr) > 64))
{
CONFIG_SERVER_DBG_WARNING("Invalid passphrase length![%s]\r\n", arg_passphraseStr);
strcpy((char*)arg_passphraseStr,"");
}
config.security = (uint16_t) PROFILE_SECURITY_WPA_WPA2;
}
else
{
/* WEP ------------------------------------------------------------- */
if(strlen((char*)arg_passphraseStr) == 5)
{
config.security = PROFILE_SECURITY_WEP40;
}
else if(strlen((char*)arg_passphraseStr) == 13)
{
config.security = PROFILE_SECURITY_WEP104;
}
else if(strlen((char*)arg_passphraseStr) == 10)
{
config.security = PROFILE_SECURITY_WEP104;
CONFIG_SERVER_DBG("WEP hex2ascii conversion for '%s' ...\r\n",arg_passphraseStr);
int ret;
ret = configServer_hex2bin((char*)arg_passphraseStr, (char*)asciiBuf, 5);
if(ret == 0)
{
//successful conversion
CONFIG_SERVER_DBG("%d,%d,%d,%d,%d\r\n",asciiBuf[0],asciiBuf[1],asciiBuf[2],asciiBuf[3],asciiBuf[4]);
memset(arg_passphraseStr, 0, sizeof(arg_passphraseStr));
memcpy(arg_passphraseStr, asciiBuf, 5);
}
else
{
//failed conversion
memset(arg_passphraseStr, 0, sizeof(arg_passphraseStr));
CONFIG_SERVER_DBG_WARNING("WEP hex2ascii conversion failed!\r\n");
}
CONFIG_SERVER_DBG("WEP hex2ascii conversion result is '%s'\r\n",arg_passphraseStr);
}
else if(strlen((char*)arg_passphraseStr) == 26)
{
config.security = PROFILE_SECURITY_WEP104;
CONFIG_SERVER_DBG("WEP hex2ascii conversion for '%s' ...\r\n",arg_passphraseStr);
int ret;
ret = configServer_hex2bin((char*)arg_passphraseStr, (char*)asciiBuf, 13);
if(ret == 0)
{
memset(arg_passphraseStr, 0, sizeof(arg_passphraseStr));
memcpy(arg_passphraseStr, asciiBuf, 13);
}
else
{
memset(arg_passphraseStr, 0, sizeof(arg_passphraseStr));
CONFIG_SERVER_DBG_WARNING("WEP hex2ascii conversion failed!\r\n");
}
CONFIG_SERVER_DBG("WEP hex2ascii conversion result is '%s'\r\n",arg_passphraseStr);
}
else
{
CONFIG_SERVER_DBG_WARNING("Invalid WEP key length![%s]\r\n",(char*)arg_passphraseStr);
config.security = PROFILE_SECURITY_WEP104;
strcpy((char*)arg_passphraseStr,"");
}
strcpy(config.passphrase, (char*)arg_passphraseStr);
strcpy(config.wepkey, (char*)arg_passphraseStr);
}
libwismart_RegistrySet(&geo,&config);
}
/*----------------------------------------------------------------------------------------------------------------------------------------------
// DYNAMIC CONTENT
-----------------------------------------------------------------------------------------------------------------------------------------------*/
/*
* This callback function is called everytime the browser requests a page with the 'hasDynamicContent'
* field equal to 1. The user must return only the following values, depending the case:
* - WISMART_SERVER_ERR_MEM : if program is out of memory. This will tell the server to not drop the
* http request, and ask in ~200ms again for the value of the variable.
* After ~5 seconds of failed rerties, the http request will be dropped by the server.
* - WISMART_SERVER_ERR_OK : The program filled the 'varValue' and 'varAllocType' fields,
* and server can use them for the reply.
*
*/
uint32_t configServer_dynamicCb(char* varName, char** varValue, uint8_t* varAllocType)
{
char* value;
config_params_t config;
if(libwismart_RegistryIsValueEmpty(&geo))
{
value = chHeapAlloc(NULL, 100);
strcpy(value,"N/A");
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
libwismart_RegistryGet(&geo,&config);
CONFIG_SERVER_DBG("Quering configuration server for variable '%s'", varName);
if(strcmp((char*)varName,"WIFI_SECURITY") == 0){
uint16_t security;
/* Alocate space for the value */
value = chHeapAlloc(NULL, 100);
if(value == NULL){
return WISMART_SERVER_ERR_MEM;
}
security = config.security;
if(security == PROFILE_SECURITY_OPEN)
{
strcpy(value,"Open");
}
else if(security == PROFILE_SECURITY_WPA_WPA2)
{
strcpy(value,"WPA/WPA2");
}
else
{
strcpy(value,"WEP");
}
/*
* Instruct server to automatically free the memory by calling the
* appropriate free() function when the request is replied.
*/
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
if(strcmp((char*)varName,"WIFI_SSID") == 0){
/* Alocate space for the value */
value = chHeapAlloc(NULL, 100);
if(value == NULL){
return WISMART_SERVER_ERR_MEM;
}
strcpy(value,config.ssid);
/*
* Instruct server to automatically free the memory by calling the
* appropriate free() function when the request is replied.
*/
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
if(strcmp((char*)varName,"WIFI_PASSPHRASE") == 0){
/* Alocate space for the value */
value = chHeapAlloc(NULL, 100);
if(value == NULL){
return WISMART_SERVER_ERR_MEM;
}
strcpy(value,config.passphrase);
/* Display only visible characters */
uint32_t index;
char* ascci = (char*)value;
for(index = 0; index < strlen(ascci); index++){
if((ascci[index] < 32) || (ascci[index] > 126)){
ascci[index] = '?';
}
}
/*
* Instruct server to automatically free the memory by calling the
* appropriate free() function when the request is replied.
*/
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
if(strcmp((char*)varName,"WIFI_RADUSER") == 0){
/* Alocate space for the value */
value = chHeapAlloc(NULL, 100);
if(value == NULL){
return WISMART_SERVER_ERR_MEM;
}
strcpy(value,config.user);
/*
* Instruct server to automatically free the memory by calling the
* appropriate free() function when the request is replied.
*/
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
if(strcmp((char*)varName,"WIFI_RADPASS") == 0){
/* Alocate space for the value */
value = chHeapAlloc(NULL, 100);
if(value == NULL){
return WISMART_SERVER_ERR_MEM;
}
strcpy(value,config.password);
/*
* Instruct server to automatically free the memory by calling the
* appropriate free() function when the request is replied.
*/
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
if(strcmp((char*)varName,"WIFI_GEOLOC") == 0){
/* Alocate space for the value */
value = chHeapAlloc(NULL, 100);
if(value == NULL){
return WISMART_SERVER_ERR_MEM;
}
strcpy(value, config.localization);
/*
* Instruct server to automatically free the memory by calling the
* appropriate free() function when the request is replied.
*/
*varAllocType = WISMART_SERVER_ALLOC_DYNAMIC;
(*varValue) = value;
return WISMART_SERVER_ERR_OK;
}
/* We should never reach here */
CONFIG_SERVER_DBG_WARNING("Unknown dynamic content asked!!");
return WISMART_SERVER_ERR_MEM;
}
/*----------------------------------------------------------------------------------------------------------------------------------------------
HEX2BIN conversion
-----------------------------------------------------------------------------------------------------------------------------------------------*/
/*
* This function converts a string in hex format to a string of ascii format. for
* example it will convert the string "313131" (byte array [3][1][3][1][3][1])
* into "111" (byte array [49][49][49]). This is needed because WEP keys can be
* givent either as HEX strigs or as ASCII strings.
*/
int configServer_hex2bin(char *hex, char *buf, size_t hexLen)
{
size_t i, j = 0;
uint8_t byte;
/*if( (hexLen%2) != 0){
return -1;
}*
for (i = 0; i < hexLen; i += 2) {
*opos++ = (ipos[i] << 4) | (ipos[i + 1]);
}*/
for(i = 0; i < strlen(hex); i += 2)
{
byte = (hex[i]-48)*16 + (hex[i+1]-48);
buf[j++] = byte;
}
return 0;
}
/*----------------------------------------------------------------------------------------------------------------------------------------------
HTTP RESOURCES
-----------------------------------------------------------------------------------------------------------------------------------------------*/
/*
* This function builds a list of all the files of our http server. The next-to-last
* entry must have the 'name' field point to NULL so the server can understand
* that this was the last entry into the array.
*/
void configServer_buildResources()
{
uint32_t index;
/* --------------------------------------------------------------------------------------------- */
// STATIC FILES
/* --------------------------------------------------------------------------------------------- */
index = 0; /* The root html file can be queried as '/' or as '/en_index.html' */
configServerResources[index].name = "/";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_HTML;
configServerResources[index].dataPtr = (uint8_t*)data_en_index_html;
configServerResources[index].dataSize = sizeof(data_en_index_html);
configServerResources[index].hasDynamicContent = 1; /* This page has dynamic content ( $_DYNAMIC[XYZ] code inside the html ) */
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = NULL;
index++;
configServerResources[index].name = "/en_index.html";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_HTML;
configServerResources[index].dataPtr = (uint8_t*)data_en_index_html;
configServerResources[index].dataSize = sizeof(data_en_index_html);
configServerResources[index].hasDynamicContent = 1; /* This page has dynamic content ( $_DYNAMIC[XYZ] code inside the html ) */
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = NULL;
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = "/en_client.html";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_HTML;
configServerResources[index].dataPtr = (uint8_t*)data_en_client_html;
configServerResources[index].dataSize = sizeof(data_en_client_html);
configServerResources[index].hasDynamicContent = 0;
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = NULL;
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = "/en_reboot.html";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_HTML;
configServerResources[index].dataPtr = (uint8_t*)data_en_reboot_html;
configServerResources[index].dataSize = sizeof(data_en_reboot_html);
configServerResources[index].hasDynamicContent = 0;
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = NULL;
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = "/css.css";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_CSS;
configServerResources[index].dataPtr = (uint8_t*)data_css_css;
configServerResources[index].dataSize = sizeof(data_css_css);
configServerResources[index].hasDynamicContent = 0;
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = NULL;
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = "/logo.png";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_PNG;
configServerResources[index].dataPtr = (uint8_t*)data_logo_png;
configServerResources[index].dataSize = sizeof(data_logo_png);
configServerResources[index].hasDynamicContent = 0;
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = NULL;
/* --------------------------------------------------------------------------------------------- */
// SCRIPTS
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = "/en_clientParams";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_HTML;
configServerResources[index].dataPtr = (uint8_t*)data_en_reboot_html;
configServerResources[index].dataSize = sizeof(data_en_reboot_html);
configServerResources[index].hasDynamicContent = 0;
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = configServer_setClientParameters; /* Function to be called when Server receives request for this script */
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = "/en_reboot";
configServerResources[index].mimeType = CONFIG_SERVER_MIME_TYPE_HTML;
configServerResources[index].dataPtr = (uint8_t*)data_en_rebooting_html;
configServerResources[index].dataSize = sizeof(data_en_rebooting_html);
configServerResources[index].hasDynamicContent = 0;
configServerResources[index].canBeCached = 0;
configServerResources[index].scriptCb = configServer_reboot; /* Function to be called when Server receives request for this script */
/* --------------------------------------------------------------------------------------------- */
// END OF LIST INDICATOR
/* --------------------------------------------------------------------------------------------- */
index++;
configServerResources[index].name = NULL;
/* --------------------------------------------------------------------------------------------- */
// RESOURCE NUMBER CHECK
/* --------------------------------------------------------------------------------------------- */
if(index + 1 > sizeof(configServerResources)/sizeof(wismart_server_resource_t)){
CONFIG_SERVER_DBG_WARNING("configServerResources[] size is too small! [%u/%u]",index + 1, sizeof(configServerResources)/sizeof(wismart_server_resource_t));
while(1){}
}
}