Webserver from SD card and picture problem

Using Arduino Networking, Protocols, and Devices
3

Yes, I made a update to :

#include <SPI.h>
#include <SD.h>
#include <SdFatUtil.h>
#include <Ethernet.h>

/************ ETHERNET STUFF ************/
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(10,20,90,66);
char rootFileName[] = "index.htm";
EthernetServer server(80);

/************ SDCARD STUFF ************/
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;

// store error strings in flash to save RAM
#define error(s) error_P(PSTR(s))

void error_P(const char* str) {
PgmPrint("error: ");
SerialPrintln_P(str);
if (card.errorCode()) {
PgmPrint("SD error: ");
Serial.print(card.errorCode(), HEX);
Serial.print(',');
Serial.println(card.errorData(), HEX);
}
while(1);
}

void setup() {
Serial.begin(115200);

PgmPrint("Free RAM: ");
Serial.println(FreeRam());

// initialize the SD card at SPI_HALF_SPEED to avoid bus errors with
// breadboards. use SPI_FULL_SPEED for better performance.
pinMode(10, OUTPUT); // set the SS pin as an output (necessary!)
digitalWrite(10, HIGH); // but turn off the W5100 chip!

if (!card.init(SPI_HALF_SPEED, 4)) error("card.init failed!");

// initialize a FAT volume
if (!volume.init(&card)) error("vol.init failed!");

PgmPrint("Volume is FAT");
Serial.println(volume.fatType(),DEC);
Serial.println();

if (!root.openRoot(&volume)) error("openRoot failed");

// list file in root with date and size
PgmPrintln("Files found in root:");
root.ls(LS_DATE | LS_SIZE);
Serial.println();

// Recursive list of all directories
PgmPrintln("Files found in all dirs:");
root.ls(LS_R);

Serial.println();
PgmPrintln("Done");

// Debugging complete, we start the server!
Ethernet.begin(mac, ip);
server.begin();
}

// How big our line buffer should be. 100 is plenty!
#define BUFSIZ 100

void loop()
{

char clientline[BUFSIZ];
char *filename;
int index = 0;
int image = 0;

EthernetClient client = server.available();
if (client) {
// an http request ends with a blank line
boolean current_line_is_blank = true;

// reset the input buffer
index = 0;

while (client.connected()) {
if (client.available()) {
char c = client.read();

// If it isn't a new line, add the character to the buffer
if (c != '\n' && c != '\r') {
clientline[index] = c;
index++;
// are we too big for the buffer? start tossing out data
if (index >= BUFSIZ)
index = BUFSIZ -1;

// continue to read more data!
continue;
}

// got a \n or \r new line, which means the string is done
clientline[index] = 0;
filename = 0;

// Print it out for debugging
Serial.println(clientline);

// Look for substring such as a request to get the root file
if (strstr(clientline, "GET / ") != 0) {
filename = rootFileName;
}
if (strstr(clientline, "GET /") != 0) {
// this time no space after the /, so a sub-file

if (!filename) filename = clientline + 5; // look after the "GET /" (5 chars)
// a little trick, look for the " HTTP/1.1" string and
// turn the first character of the substring into a 0 to clear it out.
(strstr(clientline, " HTTP"))[0] = 0;

// print the file we want
Serial.println(filename);

if (! file.open(&root, filename, O_READ)) {
client.println("HTTP/1.1 404 Not Found");
client.println("Content-Type: text/html");
client.println();
client.println("

File Not Found!

");
break;
}

Serial.println("Opened!");

client.println("HTTP/1.1 200 OK");
if (strstr(filename, ".htm") != 0)
client.println("Content-Type: text/html");
else if (strstr(filename, ".css") != 0)
client.println("Content-Type: text/css");
else if (strstr(filename, ".png") != 0)
client.println("Content-Type: image/png");
else if (strstr(filename, ".jpg") != 0)
client.println("Content-Type: image/jpeg");
else if (strstr(filename, ".gif") != 0)
client.println("Content-Type: image/gif");
else if (strstr(filename, ".3gp") != 0)
client.println("Content-Type: video/mpeg");
else if (strstr(filename, ".pdf") != 0)
client.println("Content-Type: application/pdf");
else if (strstr(filename, ".js") != 0)
client.println("Content-Type: application/x-javascript");
else if (strstr(filename, ".xml") != 0)
client.println("Content-Type: application/xml");
else
client.println("Content-Type: text");

client.println();

int16_t c;
while ((c = file.read()) >= 0) {
// uncomment the serial to debug (slow!)
//Serial.print((char)c);
client.print((char)c);
}
file.close();
} else {
// everything else is a 404
client.println("HTTP/1.1 404 Not Found");
client.println("Content-Type: text/html");
client.println();
client.println("

File Not Found!

");
}
break;
}
}
// give the web browser time to receive the data
delay(1);
client.stop();
}
}

Now I can see also picture from SDcard, but my next question is - is possible insert into this webserver any line which will show me actual values ( analog values ) of andruino ?

Thanks

Alda