int num_threads_existing = 1; /* Number of worker threads which exist. */
int num_threads_executing = 1; /* Number of worker threads currently executing. */
+extern void session_loop(void);
+void spawn_another_worker_thread(void);
+
+
void DestroyHttpHeaderHandler(void *V)
{
OneHttpHeader *pHdr;
wcsession *sptr;
for (sptr = SessionList; sptr != NULL; sptr = sptr->next) {
- sptr->killthis = 1;
+ sptr->killthis = 1;
}
}
* Lock the session list, moving any candidates for euthanasia into
* a separate list.
*/
- pthread_mutex_lock(&SessionListMutex);
+ CtdlLogResult(pthread_mutex_lock(&SessionListMutex));
for (sptr = SessionList; sptr != NULL; sptr = sptr->next) {
/* Kill idle sessions */
if ((time(NULL) - (sptr->lastreq)) > (time_t) WEBCIT_TIMEOUT) {
- syslog(3, "Timeout session %d\n", sptr->wc_session);
+ syslog(3, "Timeout session %d", sptr->wc_session);
sptr->killthis = 1;
}
sessions_to_kill = sptr;
}
}
- pthread_mutex_unlock(&SessionListMutex);
+ CtdlLogResult(pthread_mutex_unlock(&SessionListMutex));
/*
* Now free up and destroy the culled sessions.
*/
while (sessions_to_kill != NULL) {
- syslog(3, "Destroying session %d\n", sessions_to_kill->wc_session);
+ syslog(3, "Destroying session %d", sessions_to_kill->wc_session);
sptr = sessions_to_kill->next;
session_destroy_modules(&sessions_to_kill);
sessions_to_kill = sptr;
(num_threads_executing >= num_threads_existing)
&& (num_threads_existing < MAX_WORKER_THREADS)
) {
- syslog(3, "%d of %d threads are executing. Adding another worker thread.\n",
+ syslog(3, "%d of %d threads are executing. Adding another worker thread.",
num_threads_executing,
num_threads_existing
);
GetAuthBasic(Hdr);
}
- pthread_mutex_lock(ListMutex);
+ CtdlLogResult(pthread_mutex_lock(ListMutex));
for (sptr = *wclist; ((sptr != NULL) && (TheSession == NULL)); sptr = sptr->next) {
/* If HTTP-AUTH, look for a session with matching credentials */
switch (Hdr->HR.got_auth)
{
case AUTH_BASIC:
- if ( (Hdr->HR.SessionKey != sptr->SessionKey))
- continue;
- if ((!strcasecmp(ChrPtr(Hdr->c_username), ChrPtr(sptr->wc_username))) &&
- (!strcasecmp(ChrPtr(Hdr->c_password), ChrPtr(sptr->wc_password))) ) {
+ if ( (!strcasecmp(ChrPtr(Hdr->c_username), ChrPtr(sptr->wc_username)))
+ && (!strcasecmp(ChrPtr(Hdr->c_password), ChrPtr(sptr->wc_password)))
+ && (sptr->killthis == 0)
+ ) {
+ syslog(LOG_DEBUG, "\033[32m-- matched a session with the same http-auth\033[0m");
TheSession = sptr;
}
- if (TheSession == NULL)
- syslog(1, "found sessionkey [%d], but credentials for [%s|%s] didn't match\n",
- Hdr->HR.SessionKey,ChrPtr(Hdr->c_username), ChrPtr(sptr->wc_username));
break;
case AUTH_COOKIE:
/* If cookie-session, look for a session with matching session ID */
- if ( (Hdr->HR.desired_session != 0) &&
- (sptr->wc_session == Hdr->HR.desired_session)) {
+ if ( (Hdr->HR.desired_session != 0)
+ && (sptr->wc_session == Hdr->HR.desired_session)
+ ) {
+ syslog(LOG_DEBUG, "\033[32m-- matched a session with the same cookie\033[0m");
TheSession = sptr;
}
break;
case NO_AUTH:
+ /* Any unbound session is a candidate */
+ if ( (sptr->wc_session == 0) && (sptr->inuse == 0) ) {
+ syslog(LOG_DEBUG, "\033[32m-- reusing an unbound session\033[0m");
+ TheSession = sptr;
+ }
break;
}
}
- pthread_mutex_unlock(ListMutex);
- if (TheSession == NULL)
- syslog(1, "didn't find sessionkey [%d] for user [%s]\n",
- Hdr->HR.SessionKey, ChrPtr(Hdr->c_username));
+ CtdlLogResult(pthread_mutex_unlock(ListMutex));
+ if (TheSession == NULL) {
+ syslog(LOG_DEBUG, "\033[32m-- no existing session was matched\033[0m");
+ }
return TheSession;
}
TheSession = (wcsession *) malloc(sizeof(wcsession));
memset(TheSession, 0, sizeof(wcsession));
TheSession->Hdr = Hdr;
- TheSession->SessionKey = Hdr->HR.SessionKey;
TheSession->serv_sock = (-1);
pthread_setspecific(MyConKey, (void *)TheSession);
pthread_mutex_init(&TheSession->SessionMutex, NULL);
if (ListMutex != NULL)
- pthread_mutex_lock(ListMutex);
+ CtdlLogResult(pthread_mutex_lock(ListMutex));
if (wclist != NULL) {
TheSession->nonce = rand();
*wclist = TheSession;
}
if (ListMutex != NULL)
- pthread_mutex_unlock(ListMutex);
+ CtdlLogResult(pthread_mutex_unlock(ListMutex));
}
return TheSession;
}
memset(pHdr, 0, sizeof(OneHttpHeader));
pHdr->Val = Line;
Put(Hdr->HTTPHeaders, HKEY("GET /"), pHdr, DestroyHttpHeaderHandler);
- syslog(9, "%s\n", ChrPtr(Line));
+ syslog(9, "%s", ChrPtr(Line));
isbogus = ReadHttpSubject(Hdr, Line, HeaderName);
if (isbogus) break;
continue;
wcsession *TheSession;
struct timeval tx_start;
struct timeval tx_finish;
+ int session_may_be_reused = 1;
gettimeofday(&tx_start, NULL); /* start a stopwatch for performance timing */
isbogus = ReadHTTPRequest(Hdr);
Hdr->HR.dav_depth = 32767; /* TODO: find a general way to have non-0 defaults */
- if (!isbogus)
+
+ if (!isbogus) {
isbogus = AnalyseHeaders(Hdr);
+ }
- if ((isbogus) ||
- ((Hdr->HR.Handler != NULL) &&
- ((Hdr->HR.Handler->Flags & BOGUS) != 0)))
- {
+ if ( (isbogus)
+ || ((Hdr->HR.Handler != NULL)
+ && ((Hdr->HR.Handler->Flags & BOGUS) != 0))
+ ) {
wcsession *Bogus;
-
Bogus = CreateSession(0, 1, NULL, Hdr, NULL);
-
do_404();
-
- syslog(9, "HTTP: 404 [%ld.%06ld] %s %s \n",
+ syslog(9, "HTTP: 404 [%ld.%06ld] %s %s",
((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) / 1000000,
((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) % 1000000,
ReqStrs[Hdr->HR.eReqType],
/* How long did this transaction take? */
gettimeofday(&tx_finish, NULL);
- syslog(9, "HTTP: 200 [%ld.%06ld] %s %s \n",
+ syslog(9, "HTTP: 200 [%ld.%06ld] %s %s",
((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) / 1000000,
((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) % 1000000,
ReqStrs[Hdr->HR.eReqType],
CheckAuthBasic(Hdr);
}
+ if (Hdr->HR.got_auth) {
+ session_may_be_reused = 0;
+ }
+
/*
- * See if there's an existing session open with the desired ID or user/pass
+ * See if there's an existing session open with any of:
+ * - The desired Session ID
+ * - A matching http-auth username and password
+ * - An unbound session flagged as reusable
*/
TheSession = FindSession(&SessionList, Hdr, &SessionListMutex);
/*
- * Create a new session if we have to
+ * If there were no qualifying sessions, then create a new one.
*/
if (TheSession == NULL) {
TheSession = CreateSession(1, 0, &SessionList, Hdr, &SessionListMutex);
+ }
- if ( (StrLength(Hdr->c_username) == 0)
- && (!Hdr->HR.DontNeedAuth)
- && (Hdr->HR.Handler != NULL)
- && ((XHTTP_COMMANDS & Hdr->HR.Handler->Flags) == XHTTP_COMMANDS)
- ) {
- OverrideRequest(Hdr, HKEY("GET /401 HTTP/1.0"));
- Hdr->HR.prohibit_caching = 1;
- }
-
- if (StrLength(Hdr->c_language) > 0) {
- syslog(9, "Session cookie requests language '%s'\n", ChrPtr(Hdr->c_language));
- set_selected_language(ChrPtr(Hdr->c_language));
- go_selected_language();
- }
+ /*
+ * If a language was requested via a cookie, select that language now.
+ */
+ if (StrLength(Hdr->c_language) > 0) {
+ syslog(9, "Session cookie requests language '%s'", ChrPtr(Hdr->c_language));
+ set_selected_language(ChrPtr(Hdr->c_language));
+ go_selected_language();
+ }
+
+ /*
+ * Reject transactions which require http-auth, if http-auth was not provided
+ */
+ if ( (StrLength(Hdr->c_username) == 0)
+ && (!Hdr->HR.DontNeedAuth)
+ && (Hdr->HR.Handler != NULL)
+ && ((XHTTP_COMMANDS & Hdr->HR.Handler->Flags) == XHTTP_COMMANDS)
+ ) {
+ syslog(LOG_DEBUG, "\033[35m -- http-auth required but not provided\033[0m");
+ OverrideRequest(Hdr, HKEY("GET /401 HTTP/1.0"));
+ Hdr->HR.prohibit_caching = 1;
+ /* FIXME -- we have to clear the cookie here */
}
/*
/*
* Bind to the session and perform the transaction
*/
- pthread_mutex_lock(&TheSession->SessionMutex); /* bind */
+ CtdlLogResult(pthread_mutex_lock(&TheSession->SessionMutex));
pthread_setspecific(MyConKey, (void *)TheSession);
+ TheSession->inuse = 1; /* mark the session as bound */
TheSession->lastreq = time(NULL); /* log */
TheSession->Hdr = Hdr;
session_attach_modules(TheSession);
session_loop(); /* do transaction */
-
/* How long did this transaction take? */
gettimeofday(&tx_finish, NULL);
-
- syslog(9, "HTTP: 200 [%ld.%06ld] %s %s \n",
+ syslog(9, "HTTP: 200 [%ld.%06ld] %s %s",
((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) / 1000000,
((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) % 1000000,
ReqStrs[Hdr->HR.eReqType],
session_detach_modules(TheSession);
+ /* If *this* very transaction did not explicitly specify a session cookie,
+ * and it did not log in, we want to flag the session as a candidate for
+ * re-use by the next unbound client that comes along. This keeps our session
+ * table from getting bombarded with new sessions when, for example, a web
+ * spider crawls the site without using cookies.
+ */
+ if ((session_may_be_reused) && (!WC->logged_in)) {
+ WC->wc_session = 0; /* flag as available for re-use */
+ TheSession->selected_language = 0; /* clear any non-default language setting */
+ }
+
TheSession->Hdr = NULL;
- pthread_mutex_unlock(&TheSession->SessionMutex); /* unbind */
+ TheSession->inuse = 0; /* mark the session as unbound */
+ CtdlLogResult(pthread_mutex_unlock(&TheSession->SessionMutex));
}
void tmplput_nonce(StrBuf *Target, WCTemplputParams *TP)