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#include "server.h"
#include "tcpsocket.h"
#include <errno.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <microhttpd.h>
#include "configuration.h"
#include "transaction.h"
#include "transactionparser.h"
#include "templateparser.h"
#include "macroparser.h"
#include "queryhandler.h"
#include "queryhandlerpracro.h"
#include "queryhandlerpentominos.h"
#include "queryparser.h"
#include "luaquerymapper.h"
#include "database.h"
#include "widgetgenerator.h"
#include "resumeparser.h"
#include "journal_commit.h"
#include "xml_encode_decode.h"
#include "macrolist.h"
#include "templatelist.h"
#include "versionstr.h"
#include "mutex.h"
typedef long long unsigned int sessionid_t;
typedef struct {
JournalWriter *journalwriter;
} session_t;
struct conn_t {
Database *db;
Mutex mutex;
std::map<sessionid_t, session_t> sessions;
};
static std::string error_box(std::string message)
{
std::string errorbox =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<pracro version=\"1.0\">\n"
" <template name=\"error\">\n"
" <macro name=\"error\" static=\"true\">\n"
" <widgets caption=\"ERROR!\" layout=\"vbox\" name=\"error\">\n"
" <textedit name=\"errorlabel\" value=\"" + message + "\"/>\n"
" </widgets>\n"
" </macro>\n"
" </template>\n"
"</pracro>\n";
return errorbox;
}
class NotFoundException : public Exception {
public:
NotFoundException(Request &r)
: Exception("Macro " + r.macro + " not found in template " + r.templ) {}
};
static std::string handleCommits(Transaction *transaction, Database &db,
JournalWriter &journalwriter, MacroList ¯olist,
TemplateList &templatelist)
{
std::string answer;
Commits::iterator i = transaction->commits.begin();
while(i != transaction->commits.end()) {
Commit &commit = *i;
MacroParser mp(macrolist.getLatestVersion(commit.macro));
mp.parse();
Macro *macro = mp.getMacro();
std::string resume = resume_parser(macro->resume, commit);
commit.fields["journal.resume"] = resume;
db.commitTransaction(transaction->user, transaction->cpr, *macro, commit.fields);
if(resume != "") {
TemplateParser tp(templatelist.getLatestVersion(commit.templ));
tp.parse();
Template *templ = tp.getTemplate();
journalwriter.addEntry(*transaction, commit, resume, templ);
}
i++;
}
return answer;
}
static std::string handleRequest(Transaction *transaction,
TCPSocket &pentominos_socket,
Database &db,
MacroList ¯olist,
TemplateList &templatelist)
{
std::string answer;
Requests::iterator i = transaction->requests.begin();
while(i != transaction->requests.end()) {
Request &request = *i;
PRACRO_DEBUG(server, "Handling request - macro: %s, template: %s\n",
request.macro.c_str(), request.templ.c_str());
TemplateParser tp(templatelist.getLatestVersion(request.templ));
tp.parse();
Template *templ = tp.getTemplate();
answer += " <template name=\"";
answer += templ->attributes["name"];
answer += "\" title=\"";
answer += templ->attributes["title"];
answer += "\">\n";
bool foundmacro = false;
std::vector< Macro >::iterator mi2 = templ->macros.begin();
while(mi2 != templ->macros.end()) {
Macro ¯o = (*mi2);
if(macro.isHeader) {
answer += " <header caption=\"" + macro.attributes["caption"] + "\"/>\n";
mi2++;
continue;
}
bool completed = db.checkMacro(transaction->cpr,
macro.attributes["name"],
time(NULL)-Conf::db_max_ttl);
answer += " <macro completed=";
if(completed) answer += "\"true\"";
else answer += "\"false\"";
std::map< std::string, std::string >::iterator ai = macro.attributes.begin();
while(ai != macro.attributes.end()) {
std::string name = ai->first;
std::string value = ai->second;
answer += " "+name+"=\"" + value + "\"";
ai++;
}
if(macro.attributes["name"] == request.macro ||
(macro.attributes.find("static") != macro.attributes.end() &&
macro.attributes["static"] == "true")
) {
foundmacro = true;
MacroParser mp(macrolist.getLatestVersion(macro.attributes["name"]));
mp.parse();
Macro *m = mp.getMacro();
answer += " caption=\"" + m->widgets.attributes["caption"] + "\"";
answer += ">\n";
LUAQueryMapper lqm;
std::vector< Query >::iterator qi = m->queries.begin();
while(qi != m->queries.end()) {
Query &query = *qi;
std::string service = query.attributes["service"];
if(service == "pentominos") {
QueryHandlerPentominos qh(pentominos_socket, transaction->cpr);
QueryResult queryresult = qh.exec(*qi);
lqm.addQueryResult(queryresult);
}
if(service == "pracro") {
QueryHandlerPracro qh(db, transaction->cpr);
QueryResult queryresult = qh.exec(*qi);
lqm.addQueryResult(queryresult);
}
qi++;
}
if(m->scripts.size()) {
answer += " <scripts>\n";
std::vector< Script >::iterator spi = m->scripts.begin();
while(spi != m->scripts.end()) {
answer += " <script language=\"" + spi->attributes["language"]
+ "\" name=\"" + spi->attributes["name"] + "\">\n";
answer += xml_encode(spi->attributes["code"]);
answer += "\n </script>\n";
spi++;
}
answer += " </scripts>\n";
}
answer += widgetgenerator(transaction->cpr, *m, lqm, db);
} else {
MacroParser mp(macrolist.getLatestVersion(macro.attributes["name"]));
mp.parse();
Macro *m = mp.getMacro();
answer += " caption=\"" + m->widgets.attributes["caption"] + "\"";
answer += ">\n";
}
if(completed) {
answer += " <resume>";
answer += db.getResume(transaction->cpr, macro, time(NULL) - Conf::db_max_ttl);
answer += "</resume>\n";
}
answer += " </macro>\n";
mi2++;
}
if(foundmacro == false && request.macro != "")
throw NotFoundException(request);
answer += " </template>\n";
i++;
}
return answer;
}
static std::string handleTransaction(Transaction *transaction,
TCPSocket &pentominos_socket,
Database &db,
JournalWriter &journalwriter,
MacroList ¯olist,
TemplateList &templatelist)
{
std::string answer;
answer += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
answer += "<pracro version=\"1.0\">\n";
try {
answer += handleCommits(transaction, db,
journalwriter, macrolist, templatelist);
} catch( std::exception &e ) {
PRACRO_ERR(server, "Commit error: %s\n", e.what());
return error_box(xml_encode(e.what()));
}
try {
answer += handleRequest(transaction, pentominos_socket, db, macrolist, templatelist);
} catch( std::exception &e ) {
PRACRO_ERR(server, "Request error: %s\n", e.what());
return error_box(xml_encode(e.what()));
}
answer += "</pracro>\n";
PRACRO_DEBUG(server, "Done handling transaction\n");
PRACRO_DEBUG(serverxml, "%s\n", answer.c_str());
return answer;
}
static std::string handleConnection(const char *buf, size_t size, struct conn_t *conn,
sessionid_t sid, bool commitsession)
{
TCPSocket pentominos_socket;
#ifndef WITHOUT_PENTOMINOS
pentominos_socket.connect(Conf::pentominos_addr, Conf::pentominos_port);
#endif
JournalWriter *journalwriter = NULL;
conn->mutex.lock();
if(conn->sessions.find(sid) == conn->sessions.end()) {
conn->sessions[sid].journalwriter =
new JournalWriter(Conf::journal_commit_addr.c_str(), Conf::journal_commit_port);
}
journalwriter = conn->sessions[sid].journalwriter;
conn->mutex.unlock();
MacroList macrolist(Conf::xml_basedir + "/macros");
TemplateList templatelist(Conf::xml_basedir + "/templates");
Transaction transaction;
TransactionParser parser(&transaction);
PRACRO_DEBUG(server, "Read %d bytes from network\n", size);
std::string res;
if(size) {
if(parser.parse(buf, size)) {
PRACRO_DEBUG(server, "Got complete XML document, %d bytes in current buffer.\n", size);
res = handleTransaction(&transaction, pentominos_socket,
*conn->db, *journalwriter, macrolist, templatelist);
} else {
PRACRO_ERR(server, "Failed to parse data!\n");
res = error_box(xml_encode("XML Parse error."));
}
}
if(commitsession) {
journalwriter->commit();
delete journalwriter;
conn->mutex.lock();
conn->sessions.erase(sid);
conn->mutex.unlock();
}
return res;
}
static sessionid_t newSessionID(struct conn_t *conn)
{
sessionid_t sid;
conn->mutex.lock();
do {
sid = rand();
} while(conn->sessions.find(sid) != conn->sessions.end());
conn->mutex.unlock();
return sid;
}
static int handle_request(void *cls,
struct MHD_Connection *con,
const char *url,
const char *method,
const char *version,
const char *data,
unsigned int *data_size,
void **ptr)
{
struct conn_t *conn = (struct conn_t*)cls;
PRACRO_DEBUG(httpd,
"handle_request(url=\"%s\", method=\"%s\","
" version=\"%s\", data_size=\"%d\")\n",
url, method, version, *data_size);
sessionid_t sessionid;
bool commitsession = false;
const char *sessionids = MHD_lookup_connection_value(con, MHD_HEADER_KIND, "SessionID");
if(sessionids == NULL) sessionid = newSessionID(conn);
else sessionid = atoll(sessionids);
printf("SessionID: %llu\n", sessionid);
const char *session_commit = MHD_lookup_connection_value(con, MHD_HEADER_KIND, "SessionCommit");
if(session_commit) {
printf("COMMIT: sessionid %llu\n", sessionid);
commitsession = true;
}
std::string reply = handleConnection(data, *data_size, conn, sessionid, commitsession);
struct MHD_Response *rsp;
rsp = MHD_create_response_from_data(reply.length(), (char*)reply.c_str(), MHD_NO, MHD_YES);
MHD_add_response_header(rsp, MHD_HTTP_HEADER_CONTENT_TYPE, "text/plain; charset=UTF-8");
char idbuf[32];
snprintf(idbuf, sizeof(idbuf), "%llu", sessionid);
MHD_add_response_header(rsp, "SessionID", idbuf);
int ret = MHD_queue_response(con, MHD_HTTP_OK, rsp);
MHD_destroy_response(rsp);
*data_size = 0;
return ret;
}
static void httpderr(void *arg, const char *fmt, va_list ap)
{
PRACRO_ERR_VA(server, fmt, ap);
}
#define CERT "\
-----BEGIN CERTIFICATE-----\n\
MIICFTCCAX6gAwIBAgIBAjANBgkqhkiG9w0BAQUFADBVMRswGQYDVQQKExJBcGFj\n\
aGUgSFRUUCBTZXJ2ZXIxIjAgBgNVBAsTGUZvciB0ZXN0aW5nIHB1cnBvc2VzIG9u\n\
bHkxEjAQBgNVBAMTCWxvY2FsaG9zdDAeFw0wNzA2MjEwODE4MzZaFw0wODA2MjAw\n\
ODE4MzZaMEwxGzAZBgNVBAoTEkFwYWNoZSBIVFRQIFNlcnZlcjEZMBcGA1UECxMQ\n\
VGVzdCBDZXJ0aWZpY2F0ZTESMBAGA1UEAxMJbG9jYWxob3N0MIGfMA0GCSqGSIb3\n\
DQEBAQUAA4GNADCBiQKBgQDWTACKSoxd5cL06w7RtPIhFqY1l3UE/aRGmPmh8gEo\n\
w3zNf+gWxco2yjQgBTQhGww1ybOsAUtXPIsUOSFAGvPUKJZf8ibZMiJEzl2919uz\n\
IcV9+cUm7k3jFPQx4ALQEalbV++o/lfT5lhgsSiH1t1eln2omVrGCjI/1HeYrw7X\n\
owIDAQABMA0GCSqGSIb3DQEBBQUAA4GBALVFzprK6rYkWVZZZwq85w2lCYJpEl9a\n\
66IMzIwNNRfyZMoc9D9PSwsXKYfYOg1RpMt7RhWT/bpggGlsFqctsAgJSv8Ol5Cz\n\
DqTXhpV+8WOG6l4xDYZz3U3ajiu2jth2+aaMuWKy9Wkr8bzHGDufltToLalucne2\n\
npM7yCJ83Ana\n\
-----END CERTIFICATE-----"
#define KEY "\
-----BEGIN RSA PRIVATE KEY-----\n\
MIICXAIBAAKBgQDWTACKSoxd5cL06w7RtPIhFqY1l3UE/aRGmPmh8gEow3zNf+gW\n\
xco2yjQgBTQhGww1ybOsAUtXPIsUOSFAGvPUKJZf8ibZMiJEzl2919uzIcV9+cUm\n\
7k3jFPQx4ALQEalbV++o/lfT5lhgsSiH1t1eln2omVrGCjI/1HeYrw7XowIDAQAB\n\
AoGANUXHjJljs6P+hyw4DuHQn3El+ISiTo9PW02EIUIsD5opWFzHsYGR93Tk6GDi\n\
yKgUrPprdAMOW61tVaWuImWQ32R2xyrJogjGYo9XE2xAej9N37jM0AGBtn/vd4Dr\n\
LsYfpjNaM3gqIChD73iYfO+CrNbdLqTxIdG53g/u05GJ4cECQQD0vMm5+a8N82Jb\n\
oHJgE2jb83WqaYBHe0O03ujtiq3+hPZHoVV3iJWmA/aMlgdtunkJT3PdEsVfQNkH\n\
fvzR9JhbAkEA4CiZRk5Gcz7cEqyogDTMQYtmrE8hbgofISLuz1rpTEzd8hFAcerU\n\
nuwFIT3go3hO7oIHMlKU1H5iT1BsFvegWQJBAOSa6A+5A+STIKAX+l52Iu+5tYKN\n\
885RfMgZpBgm/yoMxwPX1r7GLYsajpV5mszLbz3cIo0xeH3mVBOlccEoqZsCQECP\n\
8PWq/eebp09Jo46pplsKh5wBfqNvDuBAa4AVszRiv1pFVcZ52JudZyzX4aezsyhH\n\
E0OPPYamkDI/+6Hx2KECQHF9xV1XatyXuFmfRAInK2BtfGY5UIvJaLxVD3Z1+i6q\n\
/enz7/wUwvC6G4FSWNMYgAYJOfwZ3BerdkqcRNxyR/Q=\n\
-----END RSA PRIVATE KEY-----"
extern bool pracro_is_running;
void server()
{
srand(time(NULL));
bool forceshutdown = false;
port_t port = Conf::server_port;
PRACRO_DEBUG(server, "Server running on port %d.\n", port);
struct conn_t conn;
conn.db = new Database(Conf::database_backend, Conf::database_addr,
"", Conf::database_user, Conf::database_passwd, "");
struct MHD_Daemon *d;
d = MHD_start_daemon(MHD_USE_DEBUG
| MHD_USE_SELECT_INTERNALLY
,
port,
NULL, NULL,
handle_request, &conn,
MHD_OPTION_NOTIFY_COMPLETED, NULL, NULL,
MHD_OPTION_HTTPS_MEM_KEY, KEY,
MHD_OPTION_HTTPS_MEM_CERT, CERT,
MHD_OPTION_EXTERNAL_LOGGER, httpderr, NULL,
MHD_OPTION_END);
if(!d) {
PRACRO_ERR(server, "Failed to initialise MHD_start_daemon!\n");
return;
}
again:
while(pracro_is_running) sleep(1);
if(!forceshutdown && conn.sessions.size() != 0) {
PRACRO_ERR_LOG(server, "There are %d live sesions."
" Kill again to force shutdown.\n", conn.sessions.size());
pracro_is_running = true;
forceshutdown = true;
goto again;
}
delete conn.db;
MHD_stop_daemon(d);
PRACRO_DEBUG(server, "Server gracefully shut down.\n");
}
#if 0
#include <sys/socket.h>
extern bool pracro_is_running;
void server()
{
port_t port = Conf::server_port;
TCPSocket *socket = NULL;
try {
socket = new TCPSocket("Listen socket");
socket->listen(port);
} catch (Exception &e) {
PRACRO_ERR_LOG(server, "Error in listen:\n%s\n", e.what());
delete socket;
socket = NULL;
return;
}
while(pracro_is_running && socket->connected()) {
{
int old_port = port;
port = Conf::server_port;
if(port != old_port) {
delete socket;
socket = new TCPSocket("Listen socket (reloaded)");
socket->listen(port);
}
}
TCPSocket *child = socket->accept();
if(child) {
#ifndef NON_FORKING
switch(fork()) {
case -1:
PRACRO_ERR_LOG(server, "Could not fork: %s\n", strerror(errno));
break;
case 0:
delete socket;
#endif
handleConnection(child);
delete child;
#ifndef NON_FORKING
return;
default:
delete child;
break;
}
#endif
}
}
delete socket;
PRACRO_DEBUG(server, "Server gracefully shut down.\n");
}
#endif
#ifdef TEST_SERVER
#include <sys/types.h>
#include <signal.h>
bool pracro_is_running = true;
char request[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<pracro cpr=\"2003791613\" version=\"1.0\">\n"
" <request macro=\"example\" template=\"example\"/>\n"
"</pracro>\n";
int main()
{
Conf::xml_basedir = "../xml/";
Conf::server_port = 32100;
Conf::database_backend = "testdb";
pid_t pid = fork();
switch(pid) {
case -1:
perror("fork() failed!\n");
return 1;
case 0:
try {
server();
} catch(Exception &e) {
printf(e.what());
return 1;
}
return 0;
default:
try {
TCPSocket socket;
socket.connect("localhost", Conf::server_port);
socket.write(request);
char buf[32];
memset(buf, 0, sizeof(buf));
while(socket.read(buf, 31, 1000000)) {
printf(buf); fflush(stdout);
memset(buf, 0, sizeof(buf));
}
} catch(Exception &e) {
printf(e.what());
kill(pid, SIGKILL);
return 1;
}
kill(pid, SIGKILL);
return 0;
}
return 1;
}
#endif
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