/*****************************************************************************
Function:
static HTTP_IO_RESULT HTTPPostWifiConfig(void)
Summary:
Processes the wifi config data
Description:
Accepts wireless configuration data from the www site and saves them to a
structure to be applied by the ZG configuration manager.
The following configurations are possible:
i) Mode: adhoc or infrastructure
ii) Security:
- None
- WPA/WPA2 passphrase
- WPA/WPA2 pre-calculated key
- WEP 64-bit
- WEP 128-bit
iii) Key material
If an error occurs, such as data is invalid they will be redirected to a page
informing the user of such results.
NOTE: This code for modified originally from HTTPPostWifiConfig as distributed
by Microchip.
Precondition:
None
Parameters:
None
Return Values:
HTTP_IO_DONE - all parameters have been processed
HTTP_IO_NEED_DATA - data needed by this function has not yet arrived
***************************************************************************/
static HTTP_IO_RESULT HTTPPostWifiConfig(void)
{
// Check to see if the browser is attempting to submit more data than we
// can parse at once. This function needs to receive all updated
// parameters and validate them all before committing them to memory so that
// orphaned configuration parameters do not get written (for example, if a
// static IP address is given, but the subnet mask fails parsing, we
// should not use the static IP address). Everything needs to be processed
// in a single transaction. If this is impossible, fail and notify the user.
// As a web devloper, if you add parameters to AppConfig and run into this
// problem, you could fix this by to splitting your update web page into two
// seperate web pages (causing two transactional writes). Alternatively,
// you could fix it by storing a static shadow copy of AppConfig someplace
// in memory and using it instead of newAppConfig. Lastly, you could
// increase the TCP RX FIFO size for the HTTP server. This will allow more
// data to be POSTed by the web browser before hitting this limit.
UINT8 ConnectionProfileID;
UINT8 ConnectionState;
UINT8 ssidLen;
WF_CMGetConnectionState(&ConnectionState, &ConnectionProfileID);
if(curHTTP.byteCount > TCPIsGetReady(sktHTTP) + TCPGetRxFIFOFree(sktHTTP))
goto ConfigFailure;
// Ensure that all data is waiting to be parsed. If not, keep waiting for
// all of it to arrive.
if(TCPIsGetReady(sktHTTP) < curHTTP.byteCount)
return HTTP_IO_NEED_DATA;
// Read all browser POST data
while(curHTTP.byteCount)
{
// Read a form field name
if(HTTPReadPostName(curHTTP.data, 6) != HTTP_READ_OK)
goto ConfigFailure;
// Read a form field value
if(HTTPReadPostValue(curHTTP.data + 6, sizeof(curHTTP.data)-6-2) != HTTP_READ_OK)
goto ConfigFailure;
// Parse the value that was read
// Read security type
if(!strcmppgm2ram((char*)curHTTP.data, "sec"))
{
char security_type[7];
if (strlen((char*)(curHTTP.data+6)) > 6) /* Sanity check */
goto ConfigFailure;
memcpy(security_type, (void*)(curHTTP.data+6), strlen((char*)(curHTTP.data+6)));
security_type[strlen((char*)(curHTTP.data+6))] = 0; /* Terminate string */
printf("\r\nSecurity Mode: ");
if (!strcmppgm2ram((char*)security_type, "no"))
{
CFGCXT.security = WF_SECURITY_OPEN;
printf("OPEN");
}
else if(!strcmppgm2ram((char*)security_type, "wpa"))
{
CFGCXT.security = WF_SECURITY_WPA_AUTO_WITH_PASS_PHRASE;
printf("WPA w/PASSPHRASE");
}
else if(!strcmppgm2ram((char*)security_type, "calc"))
{ /* Pre-calculated key */
CFGCXT.security = WF_SECURITY_WPA_AUTO_WITH_KEY;
printf("WPA w/AUTO Key");
}
else if(!strcmppgm2ram((char*)security_type, "wep40"))
{
CFGCXT.security = WF_SECURITY_WEP_40;
printf("WEP 64-bit");
}
else if(!strcmppgm2ram((char*)security_type, "wep104"))
{
CFGCXT.security = WF_SECURITY_WEP_104;
printf("WEP 128-bit");
}
else
{ //Security type no good :-(
printf("\r\nUnknown key type!");
goto ConfigFailure;
}
}
// Read new Security Key
/*
else if(!strcmppgm2ram((char*)curHTTP.data, "key"))
{
BYTE key_size = 0, ascii_key = 0;
switch ((BYTE)CFGCXT.security)
{
case WF_SECURITY_OPEN: //keep compiler happy, nothing to do here!
break;
case WF_SECURITY_WPA_AUTO_WITH_PASS_PHRASE: //wpa passphrase
printf("\r\nPassphrase type of key! ");
ascii_key = 1;
key_size = strlen((char *)(curHTTP.data+6));
//between 8-63 characters, passphrase
if ((key_size < 8 ) || (key_size > 63))
goto ConfigFailure;
break;
case WF_SECURITY_WPA_AUTO_WITH_KEY: //wpa pre-calculated key!!!
key_size = 64;
break;
case WF_SECURITY_WEP_40:
key_size = 10; // Assume hex size
if (strlen((char *)(curHTTP.data+6)) == 5) {
key_size = 5; // ASCII key support
ascii_key = 1;
}
CFGCXT.defaultWepKey = 0; // Example uses only key idx 0 (sometimes called 1)
break;
case WF_SECURITY_WEP_104:
key_size = 26; // Assume hex size
if (strlen((char *)(curHTTP.data+6)) == 13) {
key_size = 13; // ASCII key support
ascii_key = 1;
}
CFGCXT.defaultWepKey = 0; // Example uses only key idx 0 (sometimes called 1)
break;
default:
break;
}
if (strlen((char *)(curHTTP.data + 6)) != key_size)
{
printf("\r\nIncomplete key received! ");
goto ConfigFailure;
}
memcpy(CFGCXT.key, (void*)(curHTTP.data+6), key_size);
CFGCXT.key[key_size] = 0; // terminate string
if (!ascii_key)
{
//if ((cfg.security == sec_wep64) || (cfg.security == sec_wep128))
key_size /= 2;
if (!convertAsciiToHexInPlace((INT8 *)&CFGCXT.key[0], key_size))
{
printf("\r\nFailed to convert ASCII to hex! ");
goto ConfigFailure;
}
}
}
*/
// Get new ssid and make sure it is valid
else if(!strcmppgm2ram((char*)curHTTP.data, "ssid"))
{
if(strlen((char*)(curHTTP.data+6)) < 33u)
{
memcpy(CFGCXT.ssid, (void*)(curHTTP.data+6), strlen((char*)(curHTTP.data+6)));
CFGCXT.ssid[strlen((char*)(curHTTP.data+6))] = 0; /* Terminate string */
/* save current profile SSID for displaying later */
WF_CPGetSsid(ConnectionProfileID, (UINT8*)&CFGCXT.prevSSID, &ssidLen);
CFGCXT.prevSSID[ssidLen] = 0;
printf("\r\nSSID: %s",CFGCXT.ssid);
}
else
{ //Invalid SSID... fail :-(
printf("\r\nInvalid SSID...! ");
goto ConfigFailure;
}
}
// Get the wlan mode: adhoc or infrastructure
else if(!strcmppgm2ram((char*)curHTTP.data, (ROM char*)"wlan"))
{
char mode[6];
if (strlen((char*)(curHTTP.data+6)) > 5) /* Sanity check */
goto ConfigFailure;
memcpy(mode, (void*)(curHTTP.data+6), strlen((char*)(curHTTP.data+6)));
mode[strlen((char*)(curHTTP.data+6))] = 0; /* Terminate string */
if(!strcmppgm2ram((char*)mode, (ROM char*)"infra"))
{
printf("\r\nSetting mode to infrastructure! ");
CFGCXT.type = WF_INFRASTRUCTURE;
}
else if(!strcmppgm2ram((char*)mode, "adhoc"))
{
printf("\r\nSetting mode to adhoc! ");
CFGCXT.type = WF_ADHOC;
// Always setup adhoc to attempt to connect first, then start
WF_CPSetAdHocBehavior(ConnectionProfileID, WF_ADHOC_CONNECT_THEN_START);
}
else
{ //Mode type no good :-(
printf("\r\nConfig WLAN Mode Failure! ");
goto ConfigFailure;
}
// save old WLAN mode
WF_CPGetNetworkType(ConnectionProfileID, &CFGCXT.prevWLAN);
}
}
/* Check if WPA hasn't been selected with adhoc, if it has we choke! */
if ((CFGCXT.type == WF_ADHOC) &&
((CFGCXT.security == WF_SECURITY_WPA_AUTO_WITH_PASS_PHRASE) || (CFGCXT.security == WF_SECURITY_WPA_AUTO_WITH_KEY)))
goto ConfigFailure;
/*
* All parsing complete! If we have got to here all data has been validated and
* we can handle what is necessary to start the reconfigure process of the WiFi device
*/
// Copy wifi cfg data to be committed
memcpy(CPElements.ssid, CFGCXT.ssid, strlen((char*)(CFGCXT.ssid)));
CPElements.ssidLength = strlen((char*)(CFGCXT.ssid));
/* Going to set security type */
CPElements.securityType = CFGCXT.security;
/* Going to save the key, if required */
if (CFGCXT.security != WF_SECURITY_OPEN)
{
BYTE key_size =0;
switch ((BYTE)CFGCXT.security)
{
case WF_SECURITY_WPA_AUTO_WITH_PASS_PHRASE: //wpa passphrase
key_size = strlen((char*)(CFGCXT.key)); //ascii so use strlen
break;
case WF_SECURITY_WPA_AUTO_WITH_KEY: //wpa pre-calculated key!!!
key_size = 32;
break;
case WF_SECURITY_WEP_40:
key_size = 5;
break;
case WF_SECURITY_WEP_104:
key_size = 13;
break;
}
memcpy(CPElements.securityKey, CFGCXT.key, key_size);
CPElements.securityKey[strlen((char*)(CFGCXT.key))] = 0;
}
/* Going to save the network type */
CPElements.networkType = CFGCXT.type;
// Set the board to reboot and display reconnecting information
strcpypgm2ram((char*)curHTTP.data, "/reconnect.htm");
curHTTP.httpStatus = HTTP_REDIRECT;
/*
* Set state here to inform that the Wifi device has config data and it is ready
* to be acted upon.
*/
printf("\r\nFlagging to start config change!\r\n");
WF_START_EASY_CONFIG();
return HTTP_IO_DONE;
ConfigFailure:
//!lastFailure = TRUE;
strcpypgm2ram((char*)curHTTP.data, "/error.htm");
curHTTP.httpStatus = HTTP_REDIRECT;
return HTTP_IO_DONE;
}
/* POST method is used only for
setting the WiFi parameters in the board
*/
HTTP_IO_RESULT HTTPExecutePost(void)
{
BYTE name[20];
WORD len;
char buf[100];
// Load the file name
// Make sure BYTE filename[] above is large enough for your longest name
MPFSGetFilename(curHTTP.file, name, 20);
if(strcmppgm2ram((char*)name, (ROM char*)"connecting.htm") != 0)
return HTTP_IO_DONE;
// Loop while data remains
while(curHTTP.byteCount)
{
// Check for a complete variable
len = TCPFind(sktHTTP, '&', 0, FALSE);
if(len == 0xffff)
{// Check if this is the last one
if(TCPIsGetReady(sktHTTP) == curHTTP.byteCount)
len = curHTTP.byteCount - 1;
else // Wait for more data
{
return HTTP_IO_NEED_DATA;
}
}
// Make sure we don't overflow
if(len > HTTP_MAX_DATA_LEN-2)
{
curHTTP.byteCount -= TCPGetArray(sktHTTP, NULL, len+1);
continue;
}
// Read the next variable and parse
HTTPReadPostValue((BYTE*)buf,100);
// Figure out which variable it is
if(memcmppgm2ram(buf, (ROM void*)"host", 4) == 0)
{
strcpy(config_parms.MyHost,&buf[5]);
}
else if(memcmppgm2ram(buf, (ROM void*)"ssid", 4) == 0)
{
strcpy(config_parms.MySSID,&buf[5]);
}
else if(memcmppgm2ram(buf, (ROM void*)"select1", 7) == 0)
{
if (memcmppgm2ram(&buf[8],(ROM void*)"adhoc", 5) == 0)
{
config_parms.networkType = (BYTE)'A';
}
else if (memcmppgm2ram(&buf[8],(ROM void*)"infra", 5) == 0)
{
config_parms.networkType = (BYTE)'I';
}
}
else if(memcmppgm2ram(buf, (ROM void*)"select2", 7) == 0)
{
if (memcmppgm2ram(&buf[8],(ROM void*)"auto", 4) == 0)
{
config_parms.SecurityMode = WF_SECURITY_WPA_AUTO_WITH_KEY;
}
else if (memcmppgm2ram(&buf[8],(ROM void*)"open", 4) == 0)
{
config_parms.SecurityMode = WF_SECURITY_OPEN;
}
}
else if(memcmppgm2ram(buf, (ROM void*)"pphrase", 7) == 0)
{
strcpy((char *)config_parms.SecurityPhrase,&buf[8]);
}
else if(memcmppgm2ram(buf, (ROM void*)"chkbx", 5) == 0)
{
if (memcmppgm2ram(&buf[6],(ROM void*)"on", 2) == 0)
{
config_parms.UseKey = TRUE;
}
else
{
config_parms.UseKey = FALSE;
}
}
else if(memcmppgm2ram(buf, (ROM void*)"pkey", 4) == 0)
{
strcpy((char *)config_parms.SecurityKey, &buf[5]);
}
else if(memcmppgm2ram(buf, (ROM void*)"ip", 2) == 0)
{
strcpy(config_parms.MyIPAddr,&buf[3]);
}
else if(memcmppgm2ram(buf, (ROM void*)"subnetmask", 10) == 0)
{
strcpy(config_parms.MyMask,&buf[11]);
}
else if(memcmppgm2ram(buf, (ROM void*)"gateway", 7) == 0)
{
strcpy(config_parms.MyGateway,&buf[8]);
}
else if(memcmppgm2ram(buf, (ROM void*)"pdns", 4) == 0)
{
strcpy(config_parms.PrimaryDNSServer,&buf[5]);
}
else if(memcmppgm2ram(buf, (ROM void*)"sdns", 4) == 0)
{
strcpy(config_parms.SecondaryDNSServer,&buf[5]);
}
else if(memcmppgm2ram(buf, (ROM void*)"submit", 6) == 0) // see which button was pressed
{
config_parms.flag = 1;
}
else if(memcmppgm2ram(buf, (ROM void*)"connect", 7) == 0) // see which button was pressed
{
config_parms.flag = 2;
}
}
if (config_parms.flag == 1)
{
SaveWiFiStateToFlash();
CheckAndWriteCustom();
config_parms.DoConnectFlag = FALSE;
config_parms.flag = 0;
}
else if (config_parms.flag == 2)
{
SaveWiFiStateToFlash();
CheckAndWriteCustom();
config_parms.DoConnectFlag = TRUE;
config_parms.flag = 0;
}
return HTTP_IO_DONE;
}