#endif
#include <syslog.h>
#include <dlfcn.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include "citadel.h"
#include "server.h"
#include "sysdep_decls.h"
struct CitContext *ContextList = NULL;
int ScheduledShutdown = 0;
+int do_defrag = 0;
+int (*CtdlSendExpressMessageFunc) (char *, char *, char *) = NULL;
/*
* Various things that need to be initialized at startup
lprintf(7, "Opening databases\n");
open_databases();
+ if (do_defrag)
+ defrag_databases();
+
lprintf(7, "Checking floor reference counts\n");
check_ref_counts();
}
+/*
+ * Free any per-session data allocated by modules or whatever
+ */
+void deallocate_user_data(struct CitContext *con)
+{
+ struct CtdlSessData *ptr;
+
+ begin_critical_section(S_SESSION_TABLE);
+ while (con->FirstSessData != NULL) {
+ lprintf(9, "Deallocating user data symbol %ld\n",
+ con->FirstSessData->sym_id);
+ if (con->FirstSessData->sym_data != NULL)
+ phree(con->FirstSessData->sym_data);
+ ptr = con->FirstSessData->next;
+ phree(con->FirstSessData);
+ con->FirstSessData = ptr;
+ }
+ end_critical_section(S_SESSION_TABLE);
+}
+
+
+
+
/*
* Gracefully terminate the session and thread.
* (This is called as a cleanup handler by the thread library.)
/* Deallocate any message list we might have in memory */
if (CC->msglist != NULL) phree(CC->msglist);
+ /* Deallocate any user-data attached to this session */
+ deallocate_user_data(CC);
+
/* Now get rid of the session and context */
lprintf(7, "cleanup_stuff() calling RemoveContext(%d)\n", CC->cs_pid);
RemoveContext(CC);
}
+/*
+ * Get a dynamic symbol number for per-session user data.
+ * This API call should be made only ONCE per symbol per citserver run.
+ */
+int CtdlGetDynamicSymbol()
+{
+ static unsigned int next_symbol = SYM_MAX;
+ return ++next_symbol;
+}
+
+
+
+/*
+ * Return a pointer to some generic per-session user data.
+ * (This function returns NULL if the requested symbol is not allocated.)
+ *
+ * NOTE: we use critical sections for allocating and de-allocating these,
+ * but not for locating one.
+ */
+void *CtdlGetUserData(unsigned long requested_sym)
+{
+ struct CtdlSessData *ptr;
+
+ for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next)
+ if (ptr->sym_id == requested_sym)
+ return(ptr->sym_data);
+
+ lprintf(2, "ERROR! CtdlGetUserData(%ld) symbol not allocated\n",
+ requested_sym);
+ return NULL;
+}
+
+
+/*
+ * Allocate some generic per-session user data.
+ */
+void CtdlAllocUserData(unsigned long requested_sym, size_t num_bytes)
+{
+ struct CtdlSessData *ptr;
+
+ lprintf(9, "CtdlAllocUserData(%ld) called\n", requested_sym);
+
+ for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next) {
+ if (ptr->sym_id == requested_sym) {
+ lprintf(2, "ERROR: CtdlAllocUserData() requested for"
+ " symbol id %ld already registered\n",
+ requested_sym);
+ return;
+ }
+ }
+
+ ptr = mallok(sizeof(struct CtdlSessData));
+ ptr->sym_id = requested_sym;
+ ptr->sym_data = mallok(num_bytes);
+
+ begin_critical_section(S_SESSION_TABLE);
+ ptr->next = CC->FirstSessData;
+ CC->FirstSessData = ptr;
+ end_critical_section(S_SESSION_TABLE);
+
+ lprintf(9, "CtdlAllocUserData(%ld) finished\n", requested_sym);
+}
+
+
+
+
+
/*
* set_wtmpsupp() - alter the session listing
*/
cprintf("%d %ld\n", OK, tv);
}
+/*
+ * Check whether two hostnames match.
+ * "Realname" should be an actual name of a client that is trying to connect;
+ * "testname" should be the value we are comparing it with. The idea is that we
+ * want to compare with both the abbreviated and fully-qualified versions of
+ * "testname;" some people define "localhost" as "localhost.foo.com," etc.
+ */
+static int hostnames_match(const char *realname, const char *testname) {
+ struct hostent *he;
+ int retval = 0;
+
+ if (!strcasecmp(realname, testname))
+ return 1;
+
+#ifdef HAVE_NONREENTRANT_NETDB
+ begin_critical_section(S_NETDB);
+#endif
+
+ if ((he = gethostbyname(testname)) != NULL)
+ if (!strcasecmp(realname, he->h_name))
+ retval = 1;
+
+#ifdef HAVE_NONREENTRANT_NETDB
+ end_critical_section(S_NETDB);
+#endif
+
+ return retval;
+ }
+
/*
* check a hostname against the public_clients file
*/
char buf[256];
FILE *fp;
- if (!strcasecmp(where,"localhost")) return(1);
- if (!strcasecmp(where,config.c_fqdn)) return(1);
+ if (hostnames_match(where,"localhost")) return(1);
+ if (hostnames_match(where,config.c_fqdn)) return(1);
fp = fopen("public_clients","r");
if (fp == NULL) return(0);
while (fgets(buf,256,fp)!=NULL) {
while (isspace((buf[strlen(buf)-1])))
buf[strlen(buf)-1] = 0;
- if (!strcasecmp(buf,where)) {
+ if (hostnames_match(where,buf)) {
fclose(fp);
return(1);
}
int rev_level;
char desc[256];
char from_host[256];
+ struct in_addr addr;
if (num_parms(argbuf)<4) {
cprintf("%d usage error\n",ERROR);
if ((strlen(from_host)>0) &&
(is_public_client(CC->cs_host))) {
- strncpy(CC->cs_host,from_host,24);
- CC->cs_host[24] = 0;
+ if (inet_aton(from_host, &addr))
+ locate_host(CC->cs_host, &addr);
+ else {
+ strncpy(CC->cs_host,from_host,24);
+ CC->cs_host[24] = 0;
+ }
}
set_wtmpsupp_to_current_room();
void *context_loop(struct CitContext *con)
{
char cmdbuf[256];
- int num_sessions;
+ int num_sessions, len;
+ struct sockaddr_in sin;
/*
* Wedge our way into the context table.
time(&CC->lastidle);
strcpy(CC->lastcmdname, " ");
strcpy(CC->cs_clientname, "(unknown)");
- strcpy(CC->curr_user,"");
+ strcpy(CC->curr_user,"(not logged in)");
strcpy(CC->net_node,"");
- snprintf(CC->temp, sizeof CC->temp, "/tmp/CitServer.%d.%d", getpid(), CC->cs_pid);
- strcpy(CC->cs_room, "");
+ snprintf(CC->temp, sizeof CC->temp, tmpnam(NULL));
+ strcpy(CC->cs_room, "(no room)");
strncpy(CC->cs_host, config.c_fqdn, sizeof CC->cs_host);
CC->cs_host[sizeof CC->cs_host - 1] = 0;
- locate_host(CC->cs_host);
+ len = sizeof sin;
+ if (!getpeername(CC->client_socket, (struct sockaddr *) &sin, &len))
+ locate_host(CC->cs_host, &sin.sin_addr);
CC->cs_flags = 0;
CC->upload_type = UPL_FILE;
CC->dl_is_net = 0;
+ CC->FirstSessData = NULL;
num_sessions = session_count();
CC->nologin = 0;
lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
/*
- * Let other clients see the last command we executed, but
- * exclude NOOP because that would be boring.
+ * Let other clients see the last command we executed, and
+ * update the idle time, but not NOOP, PEXP, or GEXP.
*/
- if (strncasecmp(cmdbuf, "NOOP", 4)) {
+ if ( (strncasecmp(cmdbuf, "NOOP", 4))
+ && (strncasecmp(cmdbuf, "PEXP", 4))
+ && (strncasecmp(cmdbuf, "GEXP", 4)) ) {
strcpy(CC->lastcmdname, " ");
strncpy(CC->lastcmdname, cmdbuf, 4);
time(&CC->lastidle);
ERROR);
}
+ /* Run any after-each-command outines registered by modules */
+ PerformSessionHooks(EVT_CMD);
+
} while(strncasecmp(cmdbuf, "QUIT", 4));
cleanup(EXIT_NORMAL);
projects / citadel.git / blobdiff