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Safety improvements

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This commit is contained in:
Tixx 2024-09-07 22:00:51 +02:00
parent 4678701f42
commit de3888618a
1 changed files with 28 additions and 8 deletions
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36
src/Startup.cpp
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@ -416,11 +416,15 @@ void StartProxy() {
cli_res = backend.Post(remaining_path, headers);
} else if (host == "avatar") {
bool error = false;
std::string username;
std::string avatar_size = "100";
if (1 < path.size())
if (path.size() > 1) {
username = path[1];
} else {
error = true;
}
if (path.size() > 2) {
try {
@ -430,23 +434,39 @@ void StartProxy() {
} catch (std::exception&) {}
}
auto summary_res = forum.Get("/u/" + username + ".json", headers);
nlohmann::json d = nlohmann::json::parse(summary_res->body, nullptr, false);
httplib::Result summary_res;
if (d.contains("user")) {
auto user = d.at("user");
auto avatar_link_json = user.at("avatar_template");
if (!error) {
summary_res = forum.Get("/u/" + username + ".json", headers);
if (!summary_res || summary_res->status != 200) {
error = true;
}
}
if (!error) {
try {
nlohmann::json d = nlohmann::json::parse(summary_res->body, nullptr, false); // can fail with parse_error
auto user = d.at("user"); // can fail with out_of_range
auto avatar_link_json = user.at("avatar_template"); // can fail with out_of_range
if (avatar_link_json.is_string()) {
auto avatar_link = avatar_link_json.get<std::string>();
size_t start_pos = avatar_link.find("{size}");
if (start_pos != std::string::npos)
avatar_link.replace(start_pos, std::strlen("{size}"), avatar_size);
cli_res = forum.Get(avatar_link, headers);
} catch (std::exception&) {
error = true;
}
} else
}
if (error) {
cli_res = forum.Get("/user_avatar/forum.beammp.com/user/0/0.png", headers);
}
} else {
res.set_content("Host not found", "text/plain");
return;