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libcpr/test/httpServer.cpp

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initial commit
2024-04-14 01:01:22 +00:00
#include "httpServer.hpp"
#include <chrono>
#include <string>
#include <system_error>
#include <thread>
namespace cpr {
std::string HttpServer::GetBaseUrl() {
return "http://127.0.0.1:" + std::to_string(GetPort());
}
uint16_t HttpServer::GetPort() {
// Unassigned port number in the ephemeral range
return 61936;
}
mg_connection* HttpServer::initServer(mg_mgr* mgr, mg_event_handler_t event_handler) {
// Based on: https://mongoose.ws/tutorials/http-server/
mg_mgr_init(mgr);
std::string port = std::to_string(GetPort());
mg_connection* c = mg_http_listen(mgr, GetBaseUrl().c_str(), event_handler, this);
if (!c) {
throw std::system_error(errno, std::system_category(), "Failed to listen at port " + port);
}
return c;
}
void HttpServer::acceptConnection(mg_connection* /* conn */) {}
void HttpServer::OnRequestHello(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"OPTIONS"}) {
OnRequestOptions(conn, msg);
} else {
std::string response{"Hello world!"};
std::string headers = "Content-Type: text/html\r\n";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
}
void HttpServer::OnRequestRoot(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"OPTIONS"}) {
OnRequestOptions(conn, msg);
} else {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
}
}
void HttpServer::OnRequestNotFound(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"OPTIONS"}) {
OnRequestOptions(conn, msg);
} else {
std::string errorMessage{"Not Found"};
SendError(conn, 404, errorMessage);
}
}
void HttpServer::OnRequestOptions(mg_connection* conn, mg_http_message* /*msg*/) {
std::string headers =
"Content-Type: text/plain\r\n"
"Access-Control-Allow-Origin: *\r\n"
"Access-Control-Allow-Credentials: true\r\n"
"Access-Control-Allow-Methods: GET, POST, PUT, DELETE, PATCH, OPTIONS\r\n"
"Access-Control-Max-Age: 3600\r\n";
std::string response;
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestTimeout(mg_connection* conn, mg_http_message* msg) {
std::this_thread::sleep_for(std::chrono::milliseconds(100));
OnRequestHello(conn, msg);
}
void HttpServer::OnRequestLongTimeout(mg_connection* conn, mg_http_message* msg) {
std::this_thread::sleep_for(std::chrono::seconds(2));
OnRequestHello(conn, msg);
}
// Send the header, then send "Hello world!" every 100ms
// For this, we use a mongoose timer
void HttpServer::OnRequestLowSpeedTimeout(mg_connection* conn, mg_http_message* /* msg */, TimerArg* timer_arg) {
std::string response{"Hello world!"};
mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", response.length() * 20);
timer_arg->connection_id = conn->id;
mg_timer_init(
&timer_arg->mgr->timers, &timer_arg->timer, 100, MG_TIMER_REPEAT,
// The following lambda function gets executed each time the timer is called.
// It sends "Hello world!" to the client each 100ms at most 20 times.
[](void* arg) {
TimerArg* timer_arg = static_cast<TimerArg*>(arg);
if (timer_arg->counter < 20 && IsConnectionActive(timer_arg->mgr, timer_arg->connection) && timer_arg->connection->id == timer_arg->connection_id) {
std::string response{"Hello world!"};
mg_send(timer_arg->connection, response.c_str(), response.length());
++timer_arg->counter;
} else {
timer_arg->counter = 20; // Make sure that this timer is never called again
}
},
timer_arg);
}
// Before and after calling an endpoint that calls this method, the test needs to wait until all previous connections are closed
// The nested call to mg_mgr_poll can lead to problems otherwise
void HttpServer::OnRequestLowSpeed(mg_connection* conn, mg_http_message* /*msg*/, mg_mgr* mgr) {
std::string response{"Hello world!"};
mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", response.length());
mg_timer_add(
mgr, 2000, MG_TIMER_ONCE,
[](void* connection) {
std::string response{"Hello world!"};
mg_send(static_cast<mg_connection*>(connection), response.c_str(), response.length());
},
conn);
}
// Before and after calling an endpoint that calls this method, the test needs to wait until all previous connections are closed
// The nested call to mg_mgr_poll can lead to problems otherwise
void HttpServer::OnRequestLowSpeedBytes(mg_connection* conn, mg_http_message* /*msg*/, TimerArg* timer_arg) {
std::string response{'a'};
mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", response.length() * 20);
mg_timer_init(
&timer_arg->mgr->timers, &timer_arg->timer, 100, MG_TIMER_REPEAT,
// The following lambda function gets executed each time the timer is called.
// It first waits for 2 seconds, then sends "a" to the client each 100ms at most 20 times.
[](void* arg) {
TimerArg* timer_arg = static_cast<TimerArg*>(arg);
if (timer_arg->counter == 0) {
std::this_thread::sleep_for(std::chrono::seconds(2));
}
if (timer_arg->counter < 20 && IsConnectionActive(timer_arg->mgr, timer_arg->connection) && timer_arg->connection->id == timer_arg->connection_id) {
std::string response{'a'};
mg_send(timer_arg->connection, response.c_str(), response.length());
++timer_arg->counter;
} else {
timer_arg->counter = 20; // Make sure that this timer is never called again
}
},
timer_arg);
}
void HttpServer::OnRequestBasicCookies(mg_connection* conn, mg_http_message* /*msg*/) {
time_t expires_time = 3905119080; // Expires=Wed, 30 Sep 2093 03:18:00 GMT
std::array<char, EXPIRES_STRING_SIZE> expires_string;
std::strftime(expires_string.data(), expires_string.size(), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&expires_time));
std::string cookie1{"SID=31d4d96e407aad42; Expires=" + std::string(expires_string.data()) + "; Secure"};
std::string cookie2{"lang=en-US; Expires=" + std::string(expires_string.data()) + "; Secure"};
std::string headers =
"Content-Type: text/html\r\n"
"Set-Cookie: " +
cookie1 +
"\r\n"
"Set-Cookie: " +
cookie2 + "\r\n";
std::string response{"Basic Cookies"};
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestEmptyCookies(mg_connection* conn, mg_http_message* /*msg*/) {
time_t expires_time = 3905119080; // Expires=Wed, 30 Sep 2093 03:18:00 GMT
std::array<char, EXPIRES_STRING_SIZE> expires_string;
std::strftime(expires_string.data(), sizeof(expires_string), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&expires_time));
std::string cookie1{"SID=; Expires=" + std::string(expires_string.data()) + "; Secure"};
std::string cookie2{"lang=; Expires=" + std::string(expires_string.data()) + "; Secure"};
std::string headers =
"Content-Type: text/html\r\n"
"Set-Cookie: " +
cookie1 +
"\r\n"
"Set-Cookie: " +
cookie2 + "\r\n";
std::string response{"Empty Cookies"};
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestCookiesReflect(mg_connection* conn, mg_http_message* msg) {
mg_str* request_cookies;
if ((request_cookies = mg_http_get_header(msg, "Cookie")) == nullptr) {
std::string errorMessage{"Cookie not found"};
SendError(conn, 400, errorMessage);
return;
}
std::string cookie_str{request_cookies->ptr, request_cookies->len};
std::string headers = "Content-Type: text/html\r\n";
mg_http_reply(conn, 200, headers.c_str(), cookie_str.c_str());
}
void HttpServer::OnRequestRedirectionWithChangingCookies(mg_connection* conn, mg_http_message* msg) {
time_t expires_time = 3905119080; // Expires=Wed, 30 Sep 2093 03:18:00 GMT
std::array<char, EXPIRES_STRING_SIZE> expires_string;
std::strftime(expires_string.data(), sizeof(expires_string), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&expires_time));
mg_str* request_cookies;
std::string cookie_str;
if ((request_cookies = mg_http_get_header(msg, "Cookie")) != nullptr) {
cookie_str = std::string{request_cookies->ptr, request_cookies->len};
}
if (cookie_str.find("SID=31d4d96e407aad42") == std::string::npos) {
std::string cookie1{"SID=31d4d96e407aad42; Expires=" + std::string(expires_string.data()) + "; Secure"};
std::string cookie2{"lang=en-US; Expires=" + std::string(expires_string.data()) + "; Secure"};
std::string headers =
"Content-Type: text/html\r\n"
"Location: http://127.0.0.1:61936/redirection_with_changing_cookies.html\r\n"
"Set-Cookie: " +
cookie1 +
"\r\n"
"Set-Cookie: " +
cookie2 + "\r\n";
mg_http_reply(conn, 302, headers.c_str(), "");
} else {
cookie_str = "Received cookies are: " + cookie_str;
std::string headers = "Content-Type: text/html\r\n";
mg_http_reply(conn, 200, headers.c_str(), cookie_str.c_str());
}
}
void HttpServer::OnRequestBasicAuth(mg_connection* conn, mg_http_message* msg) {
mg_str* requested_auth;
std::string auth{"Basic"};
if ((requested_auth = mg_http_get_header(msg, "Authorization")) == nullptr || mg_ncasecmp(requested_auth->ptr, auth.c_str(), auth.length()) != 0) {
std::string errorMessage{"Unauthorized"};
SendError(conn, 401, errorMessage);
return;
}
std::string auth_string{requested_auth->ptr, requested_auth->len};
size_t basic_token = auth_string.find(' ') + 1;
auth_string = auth_string.substr(basic_token, auth_string.length() - basic_token);
auth_string = Base64Decode(auth_string);
size_t colon = auth_string.find(':');
std::string username = auth_string.substr(0, colon);
std::string password = auth_string.substr(colon + 1, auth_string.length() - colon - 1);
if (username == "user" && password == "password") {
OnRequestHeaderReflect(conn, msg);
} else {
std::string errorMessage{"Unauthorized"};
SendError(conn, 401, errorMessage);
}
}
void HttpServer::OnRequestBearerAuth(mg_connection* conn, mg_http_message* msg) {
mg_str* requested_auth;
std::string auth{"Bearer"};
if ((requested_auth = mg_http_get_header(msg, "Authorization")) == nullptr || mg_ncasecmp(requested_auth->ptr, auth.c_str(), auth.length()) != 0) {
std::string errorMessage{"Unauthorized"};
SendError(conn, 401, errorMessage);
return;
}
std::string auth_string{requested_auth->ptr, requested_auth->len};
size_t basic_token = auth_string.find(' ') + 1;
auth_string = auth_string.substr(basic_token, auth_string.length() - basic_token);
if (auth_string == "the_token") {
OnRequestHeaderReflect(conn, msg);
} else {
std::string errorMessage{"Unauthorized"};
SendError(conn, 401, errorMessage);
}
}
void HttpServer::OnRequestBasicJson(mg_connection* conn, mg_http_message* /*msg*/) {
std::string response =
"[\n"
" {\n"
" \"first_key\": \"first_value\",\n"
" \"second_key\": \"second_value\"\n"
" }\n"
"]";
std::string headers = "Content-Type: application/json\r\n";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestHeaderReflect(mg_connection* conn, mg_http_message* msg) {
std::string response = "Header reflect " + std::string{msg->method.ptr, msg->method.len};
std::string headers;
bool hasContentTypeHeader = false;
for (const mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"Content-Type"} == name) {
hasContentTypeHeader = true;
}
if (std::string{"Host"} != name && std::string{"Accept"} != name) {
if (header.value.ptr) {
headers.append(name + ": " + std::string(header.value.ptr, header.value.len) + "\r\n");
}
}
}
if (!hasContentTypeHeader) {
headers.append("Content-Type: text/html\r\n");
}
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestTempRedirect(mg_connection* conn, mg_http_message* msg) {
// Get the requested target location:
std::string location;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"RedirectLocation"} == name) {
location = std::string(header.value.ptr, header.value.len);
break;
}
}
// Check if the request contains a valid location, else default to 'hello.html':
if (location.empty()) {
location = "hello.html";
}
std::string headers = "Location: " + location + "\r\n";
std::string response = "Moved Temporarily";
mg_http_reply(conn, 302, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestPermRedirect(mg_connection* conn, mg_http_message* msg) {
// Get the requested target location:
std::string location;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"RedirectLocation"} == name) {
location = std::string(header.value.ptr, header.value.len);
break;
}
}
// Check if the request contains a valid location, else default to 'hello.html':
if (location.empty()) {
location = "hello.html";
}
std::string headers = "Location: " + location + "\r\n";
std::string response = "Moved Permanently";
mg_http_reply(conn, 301, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestResolvePermRedirect(mg_connection* conn, mg_http_message* msg) {
// Get the requested target location:
std::string location;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"RedirectLocation"} == name) {
location = std::string(header.value.ptr, header.value.len);
break;
}
}
if (location.empty()) {
std::string errorMessage{"Redirect location missing"};
SendError(conn, 405, errorMessage);
return;
}
std::string headers = "Location: " + location + "\r\n";
std::string response = "Moved Permanently";
mg_http_reply(conn, 301, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestTwoRedirects(mg_connection* conn, mg_http_message* /*msg*/) {
std::string response = "Moved Permanently";
std::string headers = "Location: permanent_redirect.html\r\n";
mg_http_reply(conn, 301, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestUrlPost(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} != std::string{"POST"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
return;
}
std::string headers = "Content-Type: application/json\r\n";
char x[100];
char y[100];
mg_http_get_var(&(msg->body), "x", x, sizeof(x));
mg_http_get_var(&(msg->body), "y", y, sizeof(y));
std::string x_string{x};
std::string y_string{y};
std::string response;
if (y_string.empty()) {
response = std::string{
"{\n"
" \"x\": " +
x_string +
"\n"
"}"};
} else {
response = std::string{
"{\n"
" \"x\": " +
x_string +
",\n"
" \"y\": " +
y_string +
",\n"
" \"sum\": " +
std::to_string(atoi(x) + atoi(y)) +
"\n"
"}"};
}
mg_http_reply(conn, 201, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestBodyGet(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} != std::string{"GET"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
return;
}
std::array<char, 100> message{};
mg_http_get_var(&(msg->body), "message", message.data(), message.size());
if (msg->body.len <= 0) {
std::string errorMessage{"No Content"};
SendError(conn, 405, errorMessage);
return;
}
std::string response = message.data();
std::string headers = "Content-Type: text/html\r\n";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestJsonPost(mg_connection* conn, mg_http_message* msg) {
mg_str* content_type{nullptr};
if ((content_type = mg_http_get_header(msg, "Content-Type")) == nullptr || std::string{content_type->ptr, content_type->len} != "application/json") {
std::string errorMessage{"Unsupported Media Type"};
SendError(conn, 415, errorMessage);
return;
}
std::string headers = "Content-Type: application/json\r\n";
mg_http_reply(conn, 201, headers.c_str(), msg->body.ptr);
}
void HttpServer::OnRequestFormPost(mg_connection* conn, mg_http_message* msg) {
size_t pos{0};
mg_http_part part{};
std::string headers = "Content-Type: application/json\r\n";
std::string response{};
response += "{\n";
while ((pos = mg_http_next_multipart(msg->body, pos, &part)) > 0) {
response += " \"" + std::string(part.name.ptr, part.name.len) + "\": \"";
if (!std::string(part.filename.ptr, part.filename.len).empty()) {
response += std::string(part.filename.ptr, part.filename.len) + "=";
}
response += std::string(part.body.ptr, part.body.len) + "\",\n";
}
response.erase(response.find_last_not_of(",\n") + 1);
response += "\n}";
mg_http_reply(conn, 201, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestDelete(mg_connection* conn, mg_http_message* msg) {
bool has_json_header = false;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
std::string value = std::string(header.value.ptr, header.value.len);
if (std::string{"Content-Type"} == name && std::string{"application/json"} == value) {
has_json_header = true;
break;
}
}
if (std::string{msg->method.ptr, msg->method.len} == std::string{"DELETE"}) {
std::string headers;
std::string response = "Patch success";
if (!has_json_header) {
headers = "Content-Type: text/html\r\n";
response = "Delete success";
} else {
headers = "Content-Type: application/json\r\n";
response = std::string{msg->body.ptr, msg->body.len};
}
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
} else {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
}
}
void HttpServer::OnRequestDeleteNotAllowed(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"DELETE"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
} else {
std::string headers = "Content-Type: text/html\r\n";
std::string response = "Delete success";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
}
void HttpServer::OnRequestPut(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"PUT"}) {
char x[100];
char y[100];
mg_http_get_var(&(msg->body), "x", x, sizeof(x));
mg_http_get_var(&(msg->body), "y", y, sizeof(y));
std::string x_string = std::string{x};
std::string y_string = std::string{y};
std::string headers = "Content-Type: application/json\r\n";
std::string response;
if (y_string.empty()) {
response = std::string{
"{\n"
" \"x\": " +
x_string +
"\n"
"}"};
} else {
response = std::string{
"{\n"
" \"x\": " +
x_string +
",\n"
" \"y\": " +
y_string +
",\n"
" \"sum\": " +
std::to_string(atoi(x) + atoi(y)) +
"\n"
"}"};
}
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
} else {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
}
}
void HttpServer::OnRequestPostReflect(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} != std::string{"POST"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
}
std::string response = std::string{msg->body.ptr, msg->body.len};
std::string headers;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name{header.name.ptr, header.name.len};
if (std::string{"Host"} != name && std::string{"Accept"} != name) {
if (header.value.ptr) {
headers.append(name + ": " + std::string(header.value.ptr, header.value.len) + "\r\n");
}
}
}
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestPutNotAllowed(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"PUT"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
} else {
std::string headers = "Content-Type: text/html\r\n";
std::string response = "Delete success";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
}
void HttpServer::OnRequestPatch(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"PATCH"}) {
char x[100];
char y[100];
mg_http_get_var(&(msg->body), "x", x, sizeof(x));
mg_http_get_var(&(msg->body), "y", y, sizeof(y));
std::string x_string = std::string{x};
std::string y_string = std::string{y};
std::string headers = "Content-Type: application/json\r\n";
std::string response;
if (y_string.empty()) {
response = std::string{
"{\n"
" \"x\": " +
x_string +
"\n"
"}"};
} else {
response = std::string{
"{\n"
" \"x\": " +
x_string +
",\n"
" \"y\": " +
y_string +
",\n"
" \"sum\": " +
std::to_string(atoi(x) + atoi(y)) +
"\n"
"}"};
}
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
} else {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
}
}
void HttpServer::OnRequestPatchNotAllowed(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"PATCH"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
} else {
std::string headers = "Content-Type: text/html\r\n";
std::string response = "Delete success";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
}
void HttpServer::OnRequestDownloadGzip(mg_connection* conn, mg_http_message* msg) {
if (std::string{msg->method.ptr, msg->method.len} == std::string{"DOWNLOAD"}) {
std::string errorMessage{"Method Not Allowed"};
SendError(conn, 405, errorMessage);
} else {
std::string encoding;
std::string range;
std::vector<std::pair<int64_t, int64_t>> ranges;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"Accept-Encoding"} == name) {
encoding = std::string(header.value.ptr, header.value.len);
} else if (std::string{"Range"} == name) {
range = std::string(header.value.ptr, header.value.len);
}
}
if (encoding.find("gzip") == std::string::npos) {
std::string errorMessage{"Invalid encoding: " + encoding};
SendError(conn, 405, errorMessage);
return;
}
if (!range.empty()) {
std::string::size_type eq_pos = range.find('=');
if (eq_pos == std::string::npos) {
std::string errorMessage{"Invalid range header: " + range};
SendError(conn, 405, errorMessage);
return;
}
int64_t current_start_index = eq_pos + 1;
int64_t current_end_index;
std::string::size_type range_len = range.length();
std::string::size_type com_pos;
std::string::size_type sep_pos;
bool more_ranges_exists;
do {
com_pos = range.find(',', current_start_index);
if (com_pos < range_len) {
current_end_index = com_pos - 1;
} else {
current_end_index = range_len - 1;
}
std::pair<int64_t, int64_t> current_range{0, -1};
sep_pos = range.find('-', current_start_index);
if (sep_pos == std::string::npos) {
std::string errorMessage{"Invalid range format " + range.substr(current_start_index, current_end_index)};
SendError(conn, 405, errorMessage);
return;
}
if (sep_pos == eq_pos + 1) {
std::string errorMessage{"Suffix ranage not supported: " + range.substr(current_start_index, current_end_index)};
SendError(conn, 405, errorMessage);
return;
}
current_range.first = std::strtoll(range.substr(current_start_index, sep_pos - 1).c_str(), nullptr, 10);
if (current_range.first == LLONG_MAX || current_range.first == LLONG_MIN) {
std::string errorMessage{"Start range is invalid number: " + range.substr(current_start_index, current_end_index)};
SendError(conn, 405, errorMessage);
return;
}
std::string er_str = range.substr(sep_pos + 1, current_end_index);
if (!er_str.empty()) {
current_range.second = std::strtoll(er_str.c_str(), nullptr, 10);
if (current_range.second == 0 || current_range.second == LLONG_MAX || current_range.second == LLONG_MIN) {
std::string errorMessage{"End range is invalid number: " + range.substr(current_start_index, current_end_index)};
SendError(conn, 405, errorMessage);
return;
}
}
ranges.push_back(current_range);
if (current_end_index >= static_cast<int64_t>(range.length() - 1)) {
more_ranges_exists = false;
} else {
// Multiple ranges are separated by ', '
more_ranges_exists = true;
current_start_index = current_end_index + 3;
}
} while (more_ranges_exists);
}
std::string response = "Download!";
int status_code = 200;
std::string headers;
if (!ranges.empty()) {
// Create response parts
std::vector<std::string> responses;
for (std::pair<int64_t, int64_t> local_range : ranges) {
if (local_range.first >= 0) {
if (local_range.first >= (int64_t) response.length()) {
responses.push_back("");
} else if (local_range.second == -1 || local_range.second >= (int64_t) response.length()) {
responses.push_back(response.substr(local_range.first));
} else {
responses.push_back(response.substr(local_range.first, local_range.second - local_range.first + 1));
}
}
}
if (responses.size() > 1) {
// Create mime multipart response
std::string boundary = "3d6b6a416f9b5";
status_code = 206;
response.clear();
for (size_t i{0}; i < responses.size(); ++i) {
response += "--" + boundary + "\n";
response += "Content-Range: bytes " + std::to_string(ranges.at(i).first) + "-";
if (ranges.at(i).second > 0) {
response += std::to_string(ranges.at(i).second);
} else {
response += std::to_string(responses.at(i).length());
}
response += "/" + std::to_string(responses.at(i).length()) + "\n\n";
response += responses.at(i) + "\n";
}
response += "--" + boundary + "--";
} else {
if (ranges.at(0).second == -1 || ranges.at(0).second >= (int64_t) response.length()) {
status_code = ranges.at(0).first > 0 ? 206 : 200;
} else {
status_code = 206;
}
response = responses.at(0);
if (status_code == 206) {
headers = "Content-Range: bytes " + std::to_string(ranges.at(0).first) + "-";
if (ranges.at(0).second > 0) {
headers += std::to_string(ranges.at(0).second);
} else {
headers += std::to_string(response.length());
}
headers += "/" + std::to_string(response.length());
}
}
}
if (!headers.empty()) {
headers += "\r\n";
}
mg_http_reply(conn, status_code, headers.c_str(), response.c_str());
}
}
void HttpServer::OnRequestCheckAcceptEncoding(mg_connection* conn, mg_http_message* msg) {
std::string response;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"Accept-Encoding"} == name) {
response = std::string(header.value.ptr, header.value.len);
}
}
std::string headers = "Content-Type: text/html\r\n";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestCheckExpect100Continue(mg_connection* conn, mg_http_message* msg) {
std::string response;
for (mg_http_header& header : msg->headers) {
if (!header.name.ptr) {
continue;
}
std::string name = std::string(header.name.ptr, header.name.len);
if (std::string{"Expect"} == name) {
response = std::string(header.value.ptr, header.value.len);
}
}
std::string headers = "Content-Type: text/html\r\n";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
void HttpServer::OnRequestGetDownloadFileLength(mg_connection* conn, mg_http_message* msg) {
auto method = std::string{msg->method.ptr, msg->method.len};
if (method == std::string{"HEAD"}) {
mg_http_reply(conn, 405, nullptr, "");
} else {
std::string response("this is a file content.");
std::string headers = "Content-Type: text/plain\r\n";
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
}
void HttpServer::OnRequest(mg_connection* conn, mg_http_message* msg) {
std::string uri = std::string(msg->uri.ptr, msg->uri.len);
if (uri == "/") {
OnRequestRoot(conn, msg);
} else if (uri == "/hello.html") {
OnRequestHello(conn, msg);
} else if (uri == "/timeout.html") {
OnRequestTimeout(conn, msg);
} else if (uri == "/long_timeout.html") {
OnRequestLongTimeout(conn, msg);
} else if (uri == "/low_speed_timeout.html") {
timer_args.emplace_back(std::make_unique<TimerArg>(&mgr, conn, mg_timer{}));
OnRequestLowSpeedTimeout(conn, msg, timer_args.back().get());
} else if (uri == "/low_speed.html") {
OnRequestLowSpeed(conn, msg, &mgr);
} else if (uri == "/low_speed_bytes.html") {
timer_args.emplace_back(std::make_unique<TimerArg>(&mgr, conn, mg_timer{}));
OnRequestLowSpeedBytes(conn, msg, timer_args.back().get());
} else if (uri == "/basic_cookies.html") {
OnRequestBasicCookies(conn, msg);
} else if (uri == "/empty_cookies.html") {
OnRequestEmptyCookies(conn, msg);
} else if (uri == "/cookies_reflect.html") {
OnRequestCookiesReflect(conn, msg);
} else if (uri == "/redirection_with_changing_cookies.html") {
OnRequestRedirectionWithChangingCookies(conn, msg);
} else if (uri == "/basic_auth.html") {
OnRequestBasicAuth(conn, msg);
} else if (uri == "/bearer_token.html") {
OnRequestBearerAuth(conn, msg);
} else if (uri == "/digest_auth.html") {
OnRequestHeaderReflect(conn, msg);
} else if (uri == "/basic.json") {
OnRequestBasicJson(conn, msg);
} else if (uri == "/header_reflect.html") {
OnRequestHeaderReflect(conn, msg);
} else if (uri == "/temporary_redirect.html") {
OnRequestTempRedirect(conn, msg);
} else if (uri == "/permanent_redirect.html") {
OnRequestPermRedirect(conn, msg);
} else if (uri == "/resolve_permanent_redirect.html") {
OnRequestResolvePermRedirect(conn, msg);
} else if (uri == "/two_redirects.html") {
OnRequestTwoRedirects(conn, msg);
} else if (uri == "/url_post.html") {
OnRequestUrlPost(conn, msg);
} else if (uri == "/body_get.html") {
OnRequestBodyGet(conn, msg);
} else if (uri == "/json_post.html") {
OnRequestJsonPost(conn, msg);
} else if (uri == "/form_post.html") {
OnRequestFormPost(conn, msg);
} else if (uri == "/post_reflect.html") {
OnRequestPostReflect(conn, msg);
} else if (uri == "/delete.html") {
OnRequestDelete(conn, msg);
} else if (uri == "/delete_unallowed.html") {
OnRequestDeleteNotAllowed(conn, msg);
} else if (uri == "/put.html") {
OnRequestPut(conn, msg);
} else if (uri == "/put_unallowed.html") {
OnRequestPutNotAllowed(conn, msg);
} else if (uri == "/patch.html") {
OnRequestPatch(conn, msg);
} else if (uri == "/patch_unallowed.html") {
OnRequestPatchNotAllowed(conn, msg);
} else if (uri == "/download_gzip.html") {
OnRequestDownloadGzip(conn, msg);
} else if (uri == "/local_port.html") {
OnRequestLocalPort(conn, msg);
} else if (uri == "/check_accept_encoding.html") {
OnRequestCheckAcceptEncoding(conn, msg);
} else if (uri == "/check_expect_100_continue.html") {
OnRequestCheckExpect100Continue(conn, msg);
} else if (uri == "/get_download_file_length.html") {
OnRequestGetDownloadFileLength(conn, msg);
} else {
OnRequestNotFound(conn, msg);
}
}
void HttpServer::OnRequestLocalPort(mg_connection* conn, mg_http_message* /*msg*/) {
// send source port number as response for checking SetLocalPort/SetLocalPortRange
std::string headers = "Content-Type: text/plain\r\n";
// Convert from big endian to little endian
std::string response = std::to_string(AbstractServer::GetRemotePort(conn));
mg_http_reply(conn, 200, headers.c_str(), response.c_str());
}
} // namespace cpr
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