static void
http_printquery(const struct req *req)
{
printf("&expr=");
http_print(req->q.expr ? req->q.expr : "");
printf("&sec=");
http_print(req->q.sec ? req->q.sec : "");
printf("&arch=");
http_print(req->q.arch ? req->q.arch : "");
}
void
form_cgi_post(FILE *fp)
{
int i;
for (i = 0; i < nvar; i++)
{
http_print(fp, fvar[i].name);
putc('=', fp);
http_print(fp, fvar[i].value);
}
}
bool
Twitter::query_time(void)
{
EthernetClient http;
if (!http.connect(ip, port))
{
println(PSTR("query_time: could not connect to server"));
return false;
}
http_print(&http, PSTR("HEAD "));
if (proxy)
{
http_print(&http, PSTR("http://"));
http_print(&http, server);
}
http_println(&http, PSTR("/ HTTP/1.1"));
http_print(&http, PSTR("Host: "));
http_print(&http, server);
http_newline(&http);
http_println(&http, PSTR("Connection: close"));
http_newline(&http);
while (http.connected())
{
if (!read_line(&http, buffer, buffer_len))
break;
if (buffer[0] == '\0')
break;
if (process_date_header(buffer))
break;
}
http.stop();
return basetime != 0L;
}
static void
http_printquery(const struct req *req, const char *sep)
{
if (NULL != req->q.query) {
printf("query=");
http_print(req->q.query);
}
if (0 == req->q.equal)
printf("%sapropos=1", sep);
if (NULL != req->q.sec) {
printf("%ssec=", sep);
http_print(req->q.sec);
}
if (NULL != req->q.arch) {
printf("%sarch=", sep);
http_print(req->q.arch);
}
if (strcmp(req->q.manpath, req->p[0])) {
printf("%smanpath=", sep);
http_print(req->q.manpath);
}
}
void
Twitter::http_println(Client *client, const prog_char str[])
{
http_print(client, str);
http_newline(client);
}
bool
Twitter::post_status(const char *message)
{
char *cp;
int i;
timestamp = get_time();
create_nonce();
compute_authorization(message);
/* Post message to twitter. */
EthernetClient http;
if (!http.connect(ip, port))
{
println(PSTR("Could not connect to server"));
return false;
}
http_print(&http, PSTR("POST "));
if (proxy)
{
http_print(&http, PSTR("http://"));
http_print(&http, server);
}
http_print(&http, uri);
http_println(&http, PSTR(" HTTP/1.1"));
http_print(&http, PSTR("Host: "));
http_print(&http, server);
http_newline(&http);
http_println(&http,
PSTR("Content-Type: application/x-www-form-urlencoded"));
http_println(&http, PSTR("Connection: close"));
/* Authorization header. */
http_print(&http, PSTR("Authorization: OAuth oauth_consumer_key=\""));
url_encode_pgm(buffer, consumer_key);
http.write(buffer);
http_print(&http, PSTR("\",oauth_signature_method=\"HMAC-SHA1"));
http_print(&http, PSTR("\",oauth_timestamp=\""));
sprintf(buffer, "%ld", timestamp);
http.write(buffer);
http_print(&http, PSTR("\",oauth_nonce=\""));
hex_encode(buffer, nonce, sizeof(nonce));
http.write(buffer);
http_print(&http, PSTR("\",oauth_version=\"1.0\",oauth_token=\""));
if (access_token_pgm)
url_encode_pgm(buffer, access_token.pgm);
else
url_encode_eeprom(buffer, access_token.eeprom);
http.write(buffer);
http_print(&http, PSTR("\",oauth_signature=\""));
cp = base64_encode(buffer, signature, HASH_LENGTH);
url_encode(cp + 1, buffer);
http.write(cp + 1);
http_println(&http, PSTR("\""));
/* Encode content. */
cp = url_encode(buffer, "status");
*cp++ = '=';
cp = url_encode(cp, message);
int content_length = cp - buffer;
sprintf(cp + 1, "%d", content_length);
http_print(&http, PSTR("Content-Length: "));
http.write(cp + 1);
http_newline(&http);
/* Header-body separator. */
http_newline(&http);
/* And finally content. */
http.write(buffer);
/* Read response status line. */
if (!read_line(&http, buffer, buffer_len) || buffer[0] == '\0')
{
http.stop();
return false;
}
int response_code;
/* HTTP/1.1 200 Success */
for (i = 0; buffer[i] && buffer[i] != ' '; i++)
;
if (buffer[i])
response_code = atoi(buffer + i + 1);
else
response_code = 0;
bool success = (200 <= response_code && response_code < 300);
if (!success)
Serial.println(buffer);
/* Skip header. */
while (true)
{
if (!read_line(&http, buffer, buffer_len))
{
http.stop();
return false;
}
if (buffer[0] == '\0')
break;
/* Update our system basetime from the response `Date'
header. */
process_date_header(buffer);
}
/* Handle content. */
while (http.connected())
{
while (http.available() > 0)
{
uint8_t byte = http.read();
if (!success)
Serial.write(byte);
}
delay(100);
}
http.stop();
if (!success)
println(PSTR(""));
return success;
}
