supertweet.cpp

00001 #include "SimpleSocket.h"
00002 #include <ctype.h>
00003 
00004 void encodeBase64(char *ibuf, char *obuf);
00005 int encodeFormUrl(char *s, char *t);
00006 
00007 void supertweet() {
00008     ClientSocket client("66.180.175.246", 80); // api.supertweet.net
00009 
00010     char user[16], password[16], message[64] = {};
00011     printf("user => ");
00012     scanf("%s", user);
00013     printf("password => ");
00014     scanf("%s", password);
00015     printf("message => ");
00016     int c = 0;
00017     while (c < ' ' || 0x7E < c)
00018         c = getc(stdin);
00019     ungetc(c, stdin);
00020     for (int i = 0; i < sizeof(message) - 1 && (c = getc(stdin)) >= ' '; i++)
00021         message[i] = c;
00022 
00023     char credential[48], credential2[64], message2[256];
00024 
00025     sprintf(credential, "%s:%s", user, password);
00026     encodeBase64(credential, credential2);
00027     encodeFormUrl(message, message2);
00028 
00029     const char *request =
00030         "POST /1/statuses/update.xml HTTP/1.1\r\n"
00031         "Host: api.supertweet.net\r\n"
00032         "Authorization: Basic %s\r\n"
00033         "Content-Length: %d\r\n"
00034         "Content-Type: application/x-www-form-urlencoded\r\n"
00035         "\r\n"
00036         "status=%s";
00037 
00038     client.printf(request, credential2, strlen(message2) + 7,  message2);
00039     printf(request, credential2, strlen(message2) + 7,  message2);
00040     printf("\n");
00041 
00042     while (client) {
00043         if (client.available()) {
00044             while (client.available()) {
00045                 char response[128] = {};
00046                 client.read(response, sizeof(response) - 1);
00047                 printf("%s", response);
00048             }
00049             client.close();
00050         }
00051     }
00052     printf("\ndone\n");
00053 }
00054 
00055 int encodeFormUrl(char *s, char *t) {
00056     char *head = t;
00057     for (char c; (c = *s) != 0; s++)
00058         switch (c) {
00059             case '\r':
00060                 break;
00061             case ' ' :
00062                 *t++ = '+';
00063                 break;
00064             default:
00065                 t += sprintf(t, isalnum(c) ? "%c" : (c == '\n') ? "\r%c" : "%%%02X", c);
00066         }
00067     *t = '\0';
00068     return t - head;
00069 }
00070 
00071 void encodeBase64(char ibuf[], int length, char *obuf) {
00072     const char BASE64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
00073     int i, j;
00074     for (i = j = 0; j < length; j += 3, i += 4) {
00075         long a = ibuf[j] << 16 | (j + 1 < length ? ibuf[j + 1] << 8 : 0) | (j + 2 < length ? ibuf[j + 2] : 0);
00076         for (int k = 3; k >= 0; k--, a >>= 6)
00077             obuf[i + k] = (j + k - 1) < length ? BASE64[a & 63] : '=';
00078     }
00079     obuf[i] = '\0';
00080 }
00081 
00082 void encodeBase64(char *ibuf, char *obuf) {
00083     encodeBase64(ibuf, strlen(ibuf), obuf);
00084 }