* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* Please read the file COPYING, README and AUTHORS for more information.
- *
- * Login and logout
*/
#include "portab.h"
+/**
+ * @file
+ * Login and logout
+ */
+
#include "imp.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
+#include <signal.h>
+#include <unistd.h>
#include "ngircd.h"
#include "conn-func.h"
#include "conf.h"
#include "channel.h"
+#include "io.h"
#include "log.h"
#include "messages.h"
+#include "pam.h"
#include "parse.h"
#include "irc.h"
#include "irc-info.h"
static bool Hello_User PARAMS(( CLIENT *Client ));
+static bool Hello_User_PostAuth PARAMS(( CLIENT *Client ));
static void Kill_Nick PARAMS(( char *Nick, char *Reason ));
static void Introduce_Client PARAMS((CLIENT *To, CLIENT *Client, int Type));
+static void Reject_Client PARAMS((CLIENT *Client));
+
static void cb_introduceClient PARAMS((CLIENT *Client, CLIENT *Prefix,
void *i));
+#ifdef PAM
+static void cb_Read_Auth_Result PARAMS((int r_fd, UNUSED short events));
+#endif
/**
* Handler for the IRC command "PASS".
if (type && strcmp(type, PROTOIRCPLUS) == 0) {
/* The peer seems to be a server which supports the
* IRC+ protocol (see doc/Protocol.txt). */
- serverver = ptr + 1;
- flags = strchr(serverver, ':');
+ serverver = ptr ? ptr + 1 : "?";
+ flags = strchr(ptr ? serverver : impl, ':');
if (flags) {
*flags = '\0';
flags++;
} else
flags = "";
Log(LOG_INFO,
- "Peer announces itself as %s-%s using protocol %d.%d/IRC+ (flags: \"%s\").",
- impl, serverver, protohigh, protolow, flags);
+ "Peer on conenction %d announces itself as %s-%s using protocol %d.%d/IRC+ (flags: \"%s\").",
+ Client_Conn(Client), impl, serverver,
+ protohigh, protolow, flags);
} else {
/* The peer seems to be a server supporting the
* "original" IRC protocol (RFC 2813). */
else
flags = "";
Log(LOG_INFO,
- "Peer announces itself as \"%s\" using protocol %d.%d (flags: \"%s\").",
- impl, protohigh, protolow, flags);
+ "Peer on connection %d announces itself as \"%s\" using protocol %d.%d (flags: \"%s\").",
+ Client_Conn(Client), impl,
+ protohigh, protolow, flags);
}
Client_SetFlags(Client, flags);
}
#else
Client_SetUser(Client, Req->argv[0], false);
#endif
+ Client_SetOrigUser(Client, Req->argv[0]);
/* "Real name" or user info text: Don't set it to the empty
* string, the original ircd can't deal with such "real names"
Req->prefix);
Client_SetUser(c, Req->argv[0], true);
+ Client_SetOrigUser(c, Req->argv[0]);
Client_SetHostname(c, Req->argv[1]);
Client_SetInfo(c, Req->argv[3]);
Client_Conn(Client), Req->argv[1], Req->argv[2], Req->argv[3]);
Client_SetUser(Client, Req->argv[1], true);
+ Client_SetOrigUser(Client, Req->argv[1]);
Client_SetHostname(Client, Req->argv[2]);
return CONNECTED;
} /* IRC_WEBIRC */
static bool
Hello_User(CLIENT * Client)
{
+#ifdef PAM
+ int pipefd[2], result;
+ CONN_ID conn;
+ pid_t pid;
+
+ assert(Client != NULL);
+ conn = Client_Conn(Client);
+
+ if (!Conf_PAM) {
+ /* Don't do any PAM authentication at all, instead emulate
+ * the beahiour of the daemon compiled without PAM support:
+ * because there can't be any "server password", all
+ * passwords supplied are classified as "wrong". */
+ if(Client_Password(Client)[0] == '\0')
+ return Hello_User_PostAuth(Client);
+ Reject_Client(Client);
+ return DISCONNECTED;
+ }
+
+ /* Fork child process for PAM authentication; and make sure that the
+ * process timeout is set higher than the login timeout! */
+ pid = Proc_Fork(Conn_GetProcStat(conn), pipefd,
+ cb_Read_Auth_Result, Conf_PongTimeout + 1);
+ if (pid > 0) {
+ LogDebug("Authenticator for connection %d created (PID %d).",
+ conn, pid);
+ return CONNECTED;
+ } else {
+ /* Sub process */
+ Log_Init_Subprocess("Auth");
+ result = PAM_Authenticate(Client);
+ write(pipefd[1], &result, sizeof(result));
+ Log_Exit_Subprocess("Auth");
+ exit(0);
+ }
+#else
assert(Client != NULL);
- /* Check password ... */
+ /* Check global server password ... */
if (strcmp(Client_Password(Client), Conf_ServerPwd) != 0) {
/* Bad password! */
- Log(LOG_ERR,
- "Client \"%s\" rejected (connection %d): Bad password!",
- Client_Mask(Client), Client_Conn(Client));
- Conn_Close(Client_Conn(Client), NULL, "Bad password", true);
+ Reject_Client(Client);
return DISCONNECTED;
}
+ return Hello_User_PostAuth(Client);
+#endif
+}
+
+
+#ifdef PAM
+
+/**
+ * Read result of the authenticatior sub-process from pipe
+ */
+static void
+cb_Read_Auth_Result(int r_fd, UNUSED short events)
+{
+ CONN_ID conn;
+ CLIENT *client;
+ int result;
+ size_t len;
+ PROC_STAT *proc;
+
+ LogDebug("Auth: Got callback on fd %d, events %d", r_fd, events);
+ conn = Conn_GetFromProc(r_fd);
+ if (conn == NONE) {
+ /* Ops, none found? Probably the connection has already
+ * been closed!? We'll ignore that ... */
+ io_close(r_fd);
+ LogDebug("Auth: Got callback for unknown connection!?");
+ return;
+ }
+ proc = Conn_GetProcStat(conn);
+ client = Conn_GetClient(conn);
+
+ /* Read result from pipe */
+ len = Proc_Read(proc, &result, sizeof(result));
+ if (len == 0)
+ return;
+
+ if (len != sizeof(result)) {
+ Log(LOG_CRIT, "Auth: Got malformed result!");
+ Reject_Client(client);
+ return;
+ }
+
+ if (result == true) {
+ Client_SetUser(client, Client_OrigUser(client), true);
+ (void)Hello_User_PostAuth(client);
+ } else
+ Reject_Client(client);
+}
+
+#endif
+
+
+static void
+Reject_Client(CLIENT *Client)
+{
+ Log(LOG_ERR,
+ "User \"%s\" rejected (connection %d): Access denied!",
+ Client_Mask(Client), Client_Conn(Client));
+ Conn_Close(Client_Conn(Client), NULL,
+ "Access denied! Bad password?", true);
+}
+
+static bool
+Hello_User_PostAuth(CLIENT *Client)
+{
Introduce_Client(NULL, Client, CLIENT_USER);
if (!IRC_WriteStrClient
IRC_SetPenalty(Client, 1);
return CONNECTED;
-} /* Hello_User */
+}
static void
projects / ngircd-alex.git / blobdiff