coyote/main.cpp

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#include <cstdio>
#include <httplib/httplib.h>
#include "config.h"
#include "client.h"
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#include "hiredis_wrapper.h"
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#include "servehelper.h"
#include "routes/routes.h"
#define DOMAIN_RE "(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,}"
// https://docs.joinmastodon.org/methods/accounts/#422-unprocessable-entity
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// https://akko.erincandescent.net/@postmaster-emeritus
#define USERNAME_RE "[a-zA-Z0-9\\-_]+"
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#define ACCT_RE USERNAME_RE "(?:@" DOMAIN_RE ")?"
int main(int argc, char** argv) {
if (argc != 2) {
fprintf(stderr, "Usage: %s <path/to/config/file.json>\n", argc > 0 ? argv[0] : "coyote");
return 1;
}
if (setenv("TZ", "UTC", true)) {
perror("Failed to set TZ=UTC: setenv()");
return 1;
}
try {
load_config(argv[1]);
} catch (const std::exception& e) {
fprintf(stderr, "Failed to load config: %s\n", e.what());
return 1;
}
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try {
init_redis();
} catch (const std::exception& e) {
fprintf(stderr, "Failed to init redis: %s\n", e.what());
return 1;
}
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MastodonClient::init();
atexit(MastodonClient::cleanup);
httplib::Server server;
server.set_payload_max_length(8192);
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server.Get("/", home_route);
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server.Get("/style.css", css_route);
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server.Get("/favicon.ico", [](const httplib::Request& req, httplib::Response& res) {
res.status = 404;
serve_error(req, res, "404: Page not found");
});
server.Get("/settings", user_settings_route);
server.Post("/settings", user_settings_route);
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server.Get("/(" DOMAIN_RE ")/@(" ACCT_RE ")(|/with_replies|/media)", user_route);
server.Get("/(" DOMAIN_RE ")/users/(" ACCT_RE ")(|/with_replies|/media)", [](const httplib::Request& req, httplib::Response& res) {
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serve_redirect(req, res, get_origin(req) + '/' + req.matches.str(1) + "/@" + req.matches.str(2) + req.matches.str(3), true);
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});
server.Get("/(" DOMAIN_RE ")/@" ACCT_RE "/([a-zA-Z0-9]+)", status_route);
server.Get("/(" DOMAIN_RE ")/users/(" ACCT_RE ")/statuses/([a-zA-Z0-9]+)", [](const httplib::Request& req, httplib::Response& res) {
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serve_redirect(req, res, get_origin(req) + '/' + req.matches.str(1) + "/@" + req.matches.str(2) + '/' + req.matches.str(3), true);
});
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// protect against ..
server.Get("/(" DOMAIN_RE ")/tags/(?!\\.|%2E|%2e)(.+)", tags_route);
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server.Get("/(" DOMAIN_RE ")/about", about_route);
server.Get("/(" DOMAIN_RE ")/?", [](const httplib::Request& req, httplib::Response& res) {
serve_redirect(req, res, get_origin(req) + '/' + req.matches.str(1) + "/about", false);
});
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server.Get("/https://?(.+)", [](const httplib::Request& req, httplib::Response& res) {
serve_redirect(req, res, get_origin(req) + '/' + req.matches.str(1), true);
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});
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#ifndef NDEBUG
server.Get("/debug/exception/known", [](const httplib::Request& req, httplib::Response& res) {
throw std::runtime_error("awoo");
});
server.Get("/debug/exception/unknown", [](const httplib::Request& req, httplib::Response& res) {
throw "cope";
});
#endif
server.Get(".*", [&](const httplib::Request& req, httplib::Response& res) {
res.status = 404;
serve_error(req, res, "404: Page not found");
});
server.set_exception_handler([&](const httplib::Request& req, httplib::Response& res, std::exception_ptr ep) {
res.status = 500;
try {
std::rethrow_exception(ep);
} catch (const std::exception& e) {
fprintf(stderr, "Exception thrown on %s: %s\n", req.path.c_str(), e.what());
serve_error(req, res, "500: Internal server error", std::nullopt, e.what());
} catch (...) {
fprintf(stderr, "Exception thrown on %s: Unknown exception\n", req.path.c_str());
serve_error(req, res, "500: Internal server error", std::nullopt, "Unknown exception");
}
});
if (config.bind_port != 0) {
if (!server.bind_to_port(config.bind_host, config.bind_port)) {
fprintf(stderr, "Failed to bind to %s:%d\n", config.bind_host.c_str(), config.bind_port);
return 1;
}
} else {
int port = server.bind_to_any_port(config.bind_host);
if (port == -1) {
fprintf(stderr, "Failed to bind to %s:<any>\n", config.bind_host.c_str());
return 1;
}
config.bind_port = port;
}
printf("Listening on %s:%d...\n", config.bind_host.c_str(), config.bind_port);
if (!server.listen_after_bind()) {
fprintf(stderr, "Failed to listen on %s:%d\n", config.bind_host.c_str(), config.bind_port);
return 1;
}
}