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mastodon-cpp/src/mastodon-cpp.cpp
tastytea ff0bd7b906
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Replaced for-loop with std::transform.
2019-03-30 22:24:15 +01:00

621 lines
16 KiB
C++

/* This file is part of mastodon-cpp.
* Copyright © 2018, 2019 tastytea <tastytea@tastytea.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sstream>
#include <regex>
#include <locale>
#include <codecvt>
#include <utility>
#include <iostream>
#include <algorithm>
#include "version.hpp"
#include "debug.hpp"
#include "mastodon-cpp.hpp"
using namespace Mastodon;
return_base::operator bool()
{
if (error_code == 0)
{
return true;
}
else
{
return false;
}
}
return_base::operator uint8_t()
{
return error_code;
}
return_call::operator const string() const
{
return answer;
}
std::ostream &Mastodon::operator <<(std::ostream &out, const return_call &ret)
{
out << ret.answer;
return out;
}
return_call::return_call()
{}
return_call::return_call(const uint8_t ec, const string &em,
const uint16_t hec, const string &a)
: http_error_code(hec)
, answer(a)
{
error_code = ec;
error_message = em;
}
API::API(const string &instance, const string &access_token)
: _instance(instance)
, _access_token(access_token)
, _useragent(string("mastodon-cpp/") + global::version)
, _http(*this, instance, access_token)
, _exceptions(false)
, _proxy("")
, _proxy_userpw("")
{}
API::~API()
{}
void API::set_useragent(const std::string &useragent)
{
_useragent = useragent;
}
const string API::get_useragent() const
{
return _useragent;
}
const string API::get_instance() const
{
return _instance;
}
const string API::maptostr(const parametermap &map, const bool &firstparam)
{
string result = "";
char delim = '?';
if (!firstparam)
{
delim = '&';
}
for (const auto &it : map)
{
if (it.second.size() == 1)
{
result += (delim + it.first + "=" + urlencode(it.second.front()));
if (delim == '?')
{
delim = '&';
}
}
else
{
for (const string &str : it.second)
{
result += (delim + it.first + "[]=" + urlencode(str));
if (delim == '?')
{
delim = '&';
}
}
}
}
ttdebug << "Constructed parameter string: " << result << '\n';
return result;
}
const curlpp::Forms API::maptoformdata(const parametermap &map)
{
curlpp::Forms formdata;
if (map.size() == 0)
{
return formdata;
}
for (const auto &it : map)
{
if (it.second.size() == 1)
{ // If the file is not base64-encoded, treat as filename
if ((it.first == "avatar" ||
it.first == "header" ||
it.first == "file") &&
it.second.front().substr(0, 4).compare("data") != 0)
{
ttdebug << it.first << ": Filename detected.\n";
formdata.push_back(
new curlpp::FormParts::File(it.first, it.second.front()));
}
else
{
string key = it.first;
if (key == "account_ids" ||
key == "exclude_types" ||
key == "media_ids")
{
key += "[]";
}
formdata.push_back(
new curlpp::FormParts::Content(key, it.second.front()));
}
}
else
{
std::transform(it.second.begin(), it.second.end(),
std::back_inserter(formdata),
[&it](const string &s)
{
return new curlpp::FormParts::Content
(it.first + "[]", s);
});
}
}
return formdata;
}
const std::string API::urlencode(const std::string &str)
{
return curlpp::escape(str);
}
const std::string API::urldecode(const std::string &str)
{
return curlpp::unescape(str);
}
return_call API::register_app1(const string &client_name,
const string &redirect_uri,
const string &scopes,
const string &website,
string &client_id,
string &client_secret,
string &url)
{
API::parametermap parameters =
{
{ "client_name", { client_name } },
{ "redirect_uris", { redirect_uri } },
{ "scopes", { scopes } },
{ "website", { website } }
};
return_call ret = post(API::v1::apps, parameters);
if (ret.error_code == 0)
{
std::smatch match;
std::regex reid("client_id\":\"([^\"]+)\"");
std::regex resecret("client_secret\":\"([^\"]+)\"");
std::regex_search(ret.answer, match, reid);
client_id = match[1].str();
std::regex_search(ret.answer, match, resecret);
client_secret = match[1].str();
url = "https://" + _instance + "/oauth/authorize" +
"?scope=" + urlencode(scopes) + "&response_type=code" +
"&redirect_uri=" + urlencode(redirect_uri) +
"&client_id=" + client_id;
if (!website.empty())
{
url += "&website=" + urlencode(website);
}
}
else if (ret.error_code == 78)
{
url = ret.answer;
}
else
{
std::cerr << "Error code: " << std::to_string(ret.error_code) << '\n';
}
return ret;
}
return_call API::register_app2(const string &client_id,
const string &client_secret,
const string &redirect_uri,
const string &code,
string &access_token)
{
API::parametermap parameters =
{
{ "client_id", { client_id } },
{ "client_secret", { client_secret } },
{ "grant_type", { "authorization_code" } },
{ "redirect_uri", { redirect_uri } },
{ "code", { code } },
};
return_call ret = post("/oauth/token", parameters);
if (ret.error_code == 0)
{
std::smatch match;
std::regex retoken("access_token\":\"([^\"]+)\"");
std::regex_search(ret.answer, match, retoken);
access_token = match[1].str();
_access_token = access_token;
}
else
{
std::cerr << "Error code: " << std::to_string(ret.error_code) << '\n';
}
return ret;
}
const string API::get_header(const std::string &header) const
{
string headers;
_http.get_headers(headers);
size_t startpos = headers.find(header + ':');
if (startpos != std::string::npos)
{
startpos = headers.find(':', startpos) + 2;
size_t endpos = headers.find("\r\n", startpos);
return headers.substr(startpos, endpos - startpos);
}
return "";
}
bool API::exceptions(const bool &value)
{
_exceptions = value;
return _exceptions;
}
bool API::exceptions() const
{
return _exceptions;
}
const string API::unescape_html(const string &html)
{
string buffer = html;
string output = "";
// Used to convert int to utf-8 char
std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> u8c;
// Matches numbered entities between 1 and 8 digits, decimal or hexadecimal
std::regex re_entity("&#(x)?(\\d{1,8});");
std::smatch match;
while (std::regex_search(buffer, match, re_entity))
{
char32_t codepoint = 0;
// 'x' in front of the number means it's hexadecimal, else decimal.
if (match[1].length() == 1)
{
codepoint = std::stoi(match[2].str(), nullptr, 16);
}
else
{
codepoint = std::stoi(match[2].str(), nullptr, 10);
}
output += match.prefix().str() + u8c.to_bytes(codepoint);
buffer = match.suffix().str();
}
output += buffer;
// Source: https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_
// entity_references#Character_entity_references_in_HTML
const std::array<const std::pair<const string, const char32_t>, 258> names =
{{
{ "exclamation", 0x0021 },
{ "quot", 0x0022 },
{ "percent", 0x0025 },
{ "amp", 0x0026 },
{ "apos", 0x0027 },
{ "add", 0x002B },
{ "lt", 0x003C },
{ "equal", 0x003D },
{ "gt", 0x003E },
{ "nbsp", 0x00A0 },
{ "iexcl", 0x00A1 },
{ "cent", 0x00A2 },
{ "pound", 0x00A3 },
{ "curren", 0x00A4 },
{ "yen", 0x00A5 },
{ "brvbar", 0x00A6 },
{ "sect", 0x00A7 },
{ "uml", 0x00A8 },
{ "copy", 0x00A9 },
{ "ordf", 0x00AA },
{ "laquo", 0x00AB },
{ "not", 0x00AC },
{ "shy", 0x00AD },
{ "reg", 0x00AE },
{ "macr", 0x00AF },
{ "deg", 0x00B0 },
{ "plusmn", 0x00B1 },
{ "sup2", 0x00B2 },
{ "sup3", 0x00B3 },
{ "acute", 0x00B4 },
{ "micro", 0x00B5 },
{ "para", 0x00B6 },
{ "middot", 0x00B7 },
{ "cedil", 0x00B8 },
{ "sup1", 0x00B9 },
{ "ordm", 0x00BA },
{ "raquo", 0x00BB },
{ "frac14", 0x00BC },
{ "frac12", 0x00BD },
{ "frac34", 0x00BE },
{ "iquest", 0x00BF },
{ "Agrave", 0x00C0 },
{ "Aacute", 0x00C1 },
{ "Acirc", 0x00C2 },
{ "Atilde", 0x00C3 },
{ "Auml", 0x00C4 },
{ "Aring", 0x00C5 },
{ "AElig", 0x00C6 },
{ "Ccedil", 0x00C7 },
{ "Egrave", 0x00C8 },
{ "Eacute", 0x00C9 },
{ "Ecirc", 0x00CA },
{ "Euml", 0x00CB },
{ "Igrave", 0x00CC },
{ "Iacute", 0x00CD },
{ "Icirc", 0x00CE },
{ "Iuml", 0x00CF },
{ "ETH", 0x00D0 },
{ "Ntilde", 0x00D1 },
{ "Ograve", 0x00D2 },
{ "Oacute", 0x00D3 },
{ "Ocirc", 0x00D4 },
{ "Otilde", 0x00D5 },
{ "Ouml", 0x00D6 },
{ "times", 0x00D7 },
{ "Oslash", 0x00D8 },
{ "Ugrave", 0x00D9 },
{ "Uacute", 0x00DA },
{ "Ucirc", 0x00DB },
{ "Uuml", 0x00DC },
{ "Yacute", 0x00DD },
{ "THORN", 0x00DE },
{ "szlig", 0x00DF },
{ "agrave", 0x00E0 },
{ "aacute", 0x00E1 },
{ "acirc", 0x00E2 },
{ "atilde", 0x00E3 },
{ "auml", 0x00E4 },
{ "aring", 0x00E5 },
{ "aelig", 0x00E6 },
{ "ccedil", 0x00E7 },
{ "egrave", 0x00E8 },
{ "eacute", 0x00E9 },
{ "ecirc", 0x00EA },
{ "euml", 0x00EB },
{ "igrave", 0x00EC },
{ "iacute", 0x00ED },
{ "icirc", 0x00EE },
{ "iuml", 0x00EF },
{ "eth", 0x00F0 },
{ "ntilde", 0x00F1 },
{ "ograve", 0x00F2 },
{ "oacute", 0x00F3 },
{ "ocirc", 0x00F4 },
{ "otilde", 0x00F5 },
{ "ouml", 0x00F6 },
{ "divide", 0x00F7 },
{ "oslash", 0x00F8 },
{ "ugrave", 0x00F9 },
{ "uacute", 0x00FA },
{ "ucirc", 0x00FB },
{ "uuml", 0x00FC },
{ "yacute", 0x00FD },
{ "thorn", 0x00FE },
{ "yuml", 0x00FF },
{ "OElig", 0x0152 },
{ "oelig", 0x0153 },
{ "Scaron", 0x0160 },
{ "scaron", 0x0161 },
{ "Yuml", 0x0178 },
{ "fnof", 0x0192 },
{ "circ", 0x02C6 },
{ "tilde", 0x02DC },
{ "Alpha", 0x0391 },
{ "Beta", 0x0392 },
{ "Gamma", 0x0393 },
{ "Delta", 0x0394 },
{ "Epsilon", 0x0395 },
{ "Zeta", 0x0396 },
{ "Eta", 0x0397 },
{ "Theta", 0x0398 },
{ "Iota", 0x0399 },
{ "Kappa", 0x039A },
{ "Lambda", 0x039B },
{ "Mu", 0x039C },
{ "Nu", 0x039D },
{ "Xi", 0x039E },
{ "Omicron", 0x039F },
{ "Pi", 0x03A0 },
{ "Rho", 0x03A1 },
{ "Sigma", 0x03A3 },
{ "Tau", 0x03A4 },
{ "Upsilon", 0x03A5 },
{ "Phi", 0x03A6 },
{ "Chi", 0x03A7 },
{ "Psi", 0x03A8 },
{ "Omega", 0x03A9 },
{ "alpha", 0x03B1 },
{ "beta", 0x03B2 },
{ "gamma", 0x03B3 },
{ "delta", 0x03B4 },
{ "epsilon", 0x03B5 },
{ "zeta", 0x03B6 },
{ "eta", 0x03B7 },
{ "theta", 0x03B8 },
{ "iota", 0x03B9 },
{ "kappa", 0x03BA },
{ "lambda", 0x03BB },
{ "mu", 0x03BC },
{ "nu", 0x03BD },
{ "xi", 0x03BE },
{ "omicron", 0x03BF },
{ "pi", 0x03C0 },
{ "rho", 0x03C1 },
{ "sigmaf", 0x03C2 },
{ "sigma", 0x03C3 },
{ "tau", 0x03C4 },
{ "upsilon", 0x03C5 },
{ "phi", 0x03C6 },
{ "chi", 0x03C7 },
{ "psi", 0x03C8 },
{ "omega", 0x03C9 },
{ "thetasym", 0x03D1 },
{ "upsih", 0x03D2 },
{ "piv", 0x03D6 },
{ "ensp", 0x2002 },
{ "emsp", 0x2003 },
{ "thinsp", 0x2009 },
{ "zwnj", 0x200C },
{ "zwj", 0x200D },
{ "lrm", 0x200E },
{ "rlm", 0x200F },
{ "ndash", 0x2013 },
{ "mdash", 0x2014 },
{ "horbar", 0x2015 },
{ "lsquo", 0x2018 },
{ "rsquo", 0x2019 },
{ "sbquo", 0x201A },
{ "ldquo", 0x201C },
{ "rdquo", 0x201D },
{ "bdquo", 0x201E },
{ "dagger", 0x2020 },
{ "Dagger", 0x2021 },
{ "bull", 0x2022 },
{ "hellip", 0x2026 },
{ "permil", 0x2030 },
{ "prime", 0x2032 },
{ "Prime", 0x2033 },
{ "lsaquo", 0x2039 },
{ "rsaquo", 0x203A },
{ "oline", 0x203E },
{ "frasl", 0x2044 },
{ "euro", 0x20AC },
{ "image", 0x2111 },
{ "weierp", 0x2118 },
{ "real", 0x211C },
{ "trade", 0x2122 },
{ "alefsym", 0x2135 },
{ "larr", 0x2190 },
{ "uarr", 0x2191 },
{ "rarr", 0x2192 },
{ "darr", 0x2193 },
{ "harr", 0x2194 },
{ "crarr", 0x21B5 },
{ "lArr", 0x21D0 },
{ "uArr", 0x21D1 },
{ "rArr", 0x21D2 },
{ "dArr", 0x21D3 },
{ "hArr", 0x21D4 },
{ "forall", 0x2200 },
{ "part", 0x2202 },
{ "exist", 0x2203 },
{ "empty", 0x2205 },
{ "nabla", 0x2207 },
{ "isin", 0x2208 },
{ "notin", 0x2209 },
{ "ni", 0x220B },
{ "prod", 0x220F },
{ "sum", 0x2211 },
{ "minus", 0x2212 },
{ "lowast", 0x2217 },
{ "radic", 0x221A },
{ "prop", 0x221D },
{ "infin", 0x221E },
{ "ang", 0x2220 },
{ "and", 0x2227 },
{ "or", 0x2228 },
{ "cap", 0x2229 },
{ "cup", 0x222A },
{ "int", 0x222B },
{ "there4", 0x2234 },
{ "sim", 0x223C },
{ "cong", 0x2245 },
{ "asymp", 0x2248 },
{ "ne", 0x2260 },
{ "equiv", 0x2261 },
{ "le", 0x2264 },
{ "ge", 0x2265 },
{ "sub", 0x2282 },
{ "sup", 0x2283 },
{ "nsub", 0x2284 },
{ "sube", 0x2286 },
{ "supe", 0x2287 },
{ "oplus", 0x2295 },
{ "otimes", 0x2297 },
{ "perp", 0x22A5 },
{ "sdot", 0x22C5 },
{ "lceil", 0x2308 },
{ "rceil", 0x2309 },
{ "lfloor", 0x230A },
{ "rfloor", 0x230B },
{ "lang", 0x2329 },
{ "rang", 0x232A },
{ "loz", 0x25CA },
{ "spades", 0x2660 },
{ "clubs", 0x2663 },
{ "hearts", 0x2665 },
{ "diams", 0x2666 }
}};
for (auto &pair : names)
{
const std::regex re('&' + pair.first + ';');
output = std::regex_replace(output, re, u8c.to_bytes(pair.second));
}
return output;
}
void API::set_proxy(const string &proxy, const string &userpw)
{
_proxy = proxy;
_proxy_userpw = userpw;
}
void API::get_proxy(string &proxy, string &userpw) const
{
if (!_proxy.empty())
{
proxy = _proxy;
if (!_proxy_userpw.empty())
{
userpw = _proxy_userpw;
}
}
}