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tweet.cpp
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tweet.cpp
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#ifdef _WIN32
#include <windows.h>
#include <io.h>
#pragma warning(disable:4996)
#else
#include <iconv.h>
#include <errno.h>
#include <unistd.h>
#define O_BINARY 0
#endif
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "oauth.h"
#include "webclient.h"
#include "tweet.h"
#include "charvec.h"
#include "urlencode.h"
static std::string make_authorization_string(char const *begin, char const *end)
{
std::vector<char> vec;
char const *ptr = begin;
char const *left = begin;
while (1) {
int c = -1;
if (ptr < end) {
c = *ptr & 0xff;
}
if (c == '&' || c == -1) {
if (left < ptr) {
if (!vec.empty()) {
vec.push_back(',');
}
std::string s(left, ptr);
print(&vec, s);
}
if (c == -1) break;
ptr++;
left = ptr;
} else {
ptr++;
}
}
return to_stdstr(vec);
}
std::string make_boundary(char const *begin, char const *end)
{
std::string boundary = "-";
size_t pos = 0;
while (begin + pos + boundary.size() < end) {
if (memcmp(begin + pos, boundary.c_str(), boundary.size()) == 0) {
int i = pos + boundary.size();
int c = begin[i] & 0xff;
if (isdigit(c)) {
c = (c -'0' + 1) % 10;
} else {
c = 0;
}
boundary += c + '0';
}
pos++;
}
boundary += '-';
return boundary;
}
bool TwitterClient::request(std::string const &url, const RequestOption &opt, std::string *reply)
{
if (reply) {
reply->clear();
}
WebContext webcx;
#if 0
webcx.load_cacert("C:\\develop\\twicpps\\cacert.pem");
#endif
WebClient client(&webcx);
WebClient::URL uri(url.c_str());
if (opt.method == RequestOption::GET) {
client.get(uri);
} else if (opt.method == RequestOption::POST) {
WebClient::Post postdata;
if (opt.upload_path.empty()) {
// www form urlencoded
WebClient::make_application_www_form_urlencoded(opt.post_begin, opt.post_end, &postdata);
} else {
// multi part form data
std::vector<char> filedata;
int fd = open(opt.upload_path.c_str(), O_RDONLY | O_BINARY);
if (fd >= 0) {
struct stat st;
if (fstat(fd, &st) == 0 && st.st_size > 0) {
filedata.resize(st.st_size);
read(fd, &filedata[0], st.st_size);
}
::close(fd);
}
if (filedata.empty()) return false;
std::string s = make_authorization_string(opt.post_begin, opt.post_end);
client.add_header("Authorization: OAuth " + s);
std::string boundary;
{
char const *begin = &filedata[0];
char const *end = begin + filedata.size();
boundary = make_boundary(begin, end);
}
std::vector<WebClient::Part> parts;
{
WebClient::Part part(&filedata[0], filedata.size());
{
WebClient::ContentDisposition cd;
cd.type = "form-data";
cd.name = "media";
part.set_content_disposition(cd);
}
parts.push_back(part);
}
WebClient::make_multipart_form_data(parts, &postdata, boundary);
}
client.post(uri, &postdata);
}
WebClient::Response const &res = client.response();
if (res.header.size() > 0) {
int a, b, c;
int n = sscanf(res.header[0].c_str(), "HTTP/%u.%u %u", &a, &b, &c);
if (n == 3 && c == 200) {
if (reply && !res.content.empty()) {
char const *p = (char const *)&res.content[0];
*reply = std::string(p, p + res.content.size());
}
return true;
}
}
return false;
}
#ifdef _WIN32
std::string sjis_to_utf8(std::string const &message)
{
int n;
wchar_t ucs2[1000];
char utf8[1000];
n = MultiByteToWideChar(CP_ACP, 0, message.c_str(), message.size(), ucs2, 1000);
n = WideCharToMultiByte(CP_UTF8, 0, ucs2, n, utf8, 1000, 0, 0);
return std::string(utf8, n);
}
#else
std::string conv(char const *dstenc, char const *srcenc, std::string const &src)
{
std::vector<char> out;
iconv_t cd = iconv_open(dstenc, srcenc);
if (cd != (iconv_t)-1) {
char tmp[65536];
size_t space = sizeof(tmp);
char *inbuf = (char *)src.c_str();
size_t inleft = src.size();
size_t n;
while (inleft > 0) {
char *outbuf = tmp;
size_t outleft = space;
n = iconv(cd, &inbuf, &inleft, &outbuf, &outleft);
if (n == (size_t)-1 && errno != E2BIG) {
break;
}
n = space - outleft;
out.insert(out.end(), tmp, tmp + n);
}
iconv_close(cd);
}
if (out.empty()) {
return std::string();
}
return std::string(&out[0], out.size());
}
#endif
#include "json.h"
bool TwitterClient::tweet(std::string message, std::vector<std::string> const *media_ids)
{
if (message.empty()) {
return false;
}
// convert message to utf-8
#ifdef _WIN32
message = sjis_to_utf8(message);
#else
//message = conv("utf-8", "euc-jp", message);
#endif
std::string url = "https://api.twitter.com/1.1/statuses/update.json";
url += "?status=";
url += url_encode(message);
if (media_ids && !media_ids->empty()) {
std::string ids;
for (std::string const &media_id : *media_ids) {
if (!media_id.empty()) {
if (!ids.empty()) {
ids += ',';
}
ids += media_id;
}
}
if (!ids.empty()) {
url += "&media_ids=";
url += ids;
}
}
oauth::Request oauth_req = oauth::sign(url.c_str(), oauth::POST, keys());
std::string res;
RequestOption opt;
char const *p = oauth_req.post.c_str();
opt.set_post_data(p, p + oauth_req.post.size());
return request(oauth_req.url, opt, &res);
}
std::string TwitterClient::upload(std::string const &path)
{
std::string media_id;
std::string url = "https://upload.twitter.com/1.1/media/upload.json";
oauth::Request oauth_req = oauth::sign(url.c_str(), oauth::POST, keys());
std::string res;
RequestOption opt;
char const *p = oauth_req.post.c_str();
opt.set_post_data(p, p + oauth_req.post.size());
opt.set_upload_path(path);
bool ok = request(oauth_req.url, opt, &res);
if (ok && !res.empty()) {
JSON json;
json.parse(res);
media_id = json.get("/media_id").value;
}
return media_id;
}