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https://github.com/irssi/irssi.git
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SASL support
The only supported methods are PLAIN and EXTERNAL, the latter is untested as of now. The code gets the values from the keys named sasl_{mechanism,username,password} specified for each chatnet.
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@ -8,6 +8,9 @@ char *address;
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int port;
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char *password;
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int sasl_mechanism;
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char *sasl_password;
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char *ssl_cert;
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char *ssl_pkey;
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char *ssl_pass;
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@ -27,6 +27,7 @@ libirc_core_a_SOURCES = \
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irc-servers-setup.c \
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irc-session.c \
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irc-cap.c \
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sasl.c \
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lag.c \
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massjoin.c \
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modes.c \
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@ -50,6 +51,7 @@ pkginc_irc_core_HEADERS = \
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irc-servers.h \
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irc-servers-setup.h \
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irc-cap.h \
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sasl.h \
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modes.h \
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mode-lists.h \
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module.h \
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@ -48,6 +48,10 @@ static void sig_chatnet_read(IRC_CHATNET_REC *rec, CONFIG_NODE *node)
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rec->max_msgs = config_node_get_int(node, "max_msgs", 0);
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rec->max_modes = config_node_get_int(node, "max_modes", 0);
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rec->max_whois = config_node_get_int(node, "max_whois", 0);
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rec->sasl_mechanism = config_node_get_str(node, "sasl_mechanism", NULL);
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rec->sasl_username = config_node_get_str(node, "sasl_username", NULL);
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rec->sasl_password = config_node_get_str(node, "sasl_password", NULL);
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}
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static void sig_chatnet_saved(IRC_CHATNET_REC *rec, CONFIG_NODE *node)
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@ -78,7 +82,7 @@ static void sig_chatnet_saved(IRC_CHATNET_REC *rec, CONFIG_NODE *node)
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static void sig_chatnet_destroyed(IRC_CHATNET_REC *rec)
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{
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if (IS_IRC_CHATNET(rec))
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g_free(rec->usermode);
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g_free(rec->usermode);
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}
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@ -17,12 +17,15 @@
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struct _IRC_CHATNET_REC {
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#include "chatnet-rec.h"
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char *usermode;
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char *usermode;
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char *sasl_mechanism;
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char *sasl_username;
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char *sasl_password;
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int max_cmds_at_once;
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int cmd_queue_speed;
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int max_query_chans; /* when syncing, max. number of channels to
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put in one MODE/WHO command */
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int max_query_chans; /* when syncing, max. number of channels to put in one MODE/WHO command */
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/* max. number of kicks/msgs/mode/whois per command */
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int max_kicks, max_msgs, max_modes, max_whois;
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@ -27,6 +27,7 @@
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#include "irc-channels.h"
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#include "irc-queries.h"
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#include "irc-cap.h"
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#include "sasl.h"
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#include "irc-servers-setup.h"
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#include "channels-setup.h"
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@ -119,6 +120,7 @@ void irc_core_init(void)
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netsplit_init();
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irc_expandos_init();
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cap_init();
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sasl_init();
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settings_check();
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module_register("core", "irc");
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@ -128,6 +130,7 @@ void irc_core_deinit(void)
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{
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signal_emit("chat protocol deinit", 1, chat_protocol_find("IRC"));
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sasl_deinit();
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cap_deinit();
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irc_expandos_deinit();
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netsplit_deinit();
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@ -140,7 +143,7 @@ void irc_core_deinit(void)
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irc_irc_deinit();
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irc_servers_deinit();
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irc_chatnets_deinit();
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irc_session_deinit();
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irc_session_deinit();
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chat_protocol_unregister("IRC");
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}
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@ -28,6 +28,7 @@
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#include "irc-chatnets.h"
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#include "irc-servers-setup.h"
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#include "irc-servers.h"
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#include "sasl.h"
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/* Fill information to connection from server setup record */
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static void sig_server_setup_fill_reconn(IRC_SERVER_CONNECT_REC *conn,
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@ -79,6 +80,29 @@ static void sig_server_setup_fill_chatnet(IRC_SERVER_CONNECT_REC *conn,
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conn->cmd_queue_speed = ircnet->cmd_queue_speed;
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if (ircnet->max_query_chans > 0)
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conn->max_query_chans = ircnet->max_query_chans;
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/* Validate the SASL parameters filled by sig_chatnet_read() */
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conn->sasl_mechanism = SASL_MECHANISM_NONE;
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if (ircnet->sasl_mechanism != NULL) {
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if (!g_ascii_strcasecmp(ircnet->sasl_mechanism, "plain")) {
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/* The PLAIN method needs both the username and the password */
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if (ircnet->sasl_username != NULL && *ircnet->sasl_username &&
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ircnet->sasl_password != NULL && *ircnet->sasl_password) {
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conn->sasl_mechanism = SASL_MECHANISM_PLAIN;
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conn->sasl_username = ircnet->sasl_username;
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conn->sasl_password = ircnet->sasl_password;
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} else
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g_warning("The fields sasl_username and sasl_password are either undefined or empty");
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}
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else if (!g_ascii_strcasecmp(ircnet->sasl_mechanism, "external")) {
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conn->sasl_mechanism = SASL_MECHANISM_EXTERNAL;
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conn->sasl_username = NULL;
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conn->sasl_password = NULL;
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}
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else
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g_warning("Unsupported SASL mechanism \"%s\" selected", ircnet->sasl_mechanism);
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}
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}
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static void init_userinfo(void)
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@ -33,6 +33,7 @@
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#include "irc-servers-setup.h"
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#include "irc-servers.h"
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#include "irc-cap.h"
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#include "sasl.h"
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#include "channel-rejoin.h"
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#include "servers-idle.h"
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#include "servers-reconnect.h"
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@ -215,6 +216,9 @@ static void server_init(IRC_SERVER_REC *server)
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g_free(cmd);
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}
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if (conn->sasl_mechanism != SASL_MECHANISM_NONE)
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cap_toggle(server, "sasl", TRUE);
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irc_send_cmd_now(server, "CAP LS");
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if (conn->password != NULL && *conn->password != '\0') {
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@ -27,6 +27,10 @@ struct _IRC_SERVER_CONNECT_REC {
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char *usermode;
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char *alternate_nick;
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int sasl_mechanism;
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char *sasl_username;
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char *sasl_password;
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int max_cmds_at_once;
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int cmd_queue_speed;
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int max_query_chans;
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134
src/irc/core/sasl.c
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134
src/irc/core/sasl.c
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@ -0,0 +1,134 @@
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#include "module.h"
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#include "misc.h"
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#include "settings.h"
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#include "irc-cap.h"
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#include "irc-servers.h"
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#include "sasl.h"
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#define SASL_TIMEOUT (20 * 1000) // ms
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static gboolean sasl_timeout (IRC_SERVER_REC *server)
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{
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/* The authentication timed out, we can't do much beside terminating it */
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g_critical("The authentication timed out, try increasing the timeout and check your connection "
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"to the network.");
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irc_send_cmd_now(server, "AUTHENTICATE *");
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cap_finish_negotiation(server);
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return G_SOURCE_REMOVE;
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}
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static void sasl_start (IRC_SERVER_REC *server, const char *data, const char *from)
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{
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IRC_SERVER_CONNECT_REC *conn;
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conn = server->connrec;
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switch (conn->sasl_mechanism) {
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case SASL_MECHANISM_PLAIN:
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irc_send_cmd_now(server, "AUTHENTICATE PLAIN");
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break;
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case SASL_MECHANISM_EXTERNAL:
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irc_send_cmd_now(server, "AUTHENTICATE EXTERNAL");
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break;
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}
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server->sasl_timeout = g_timeout_add(SASL_TIMEOUT, (GSourceFunc) sasl_timeout, server);
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}
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static void sasl_fail (IRC_SERVER_REC *server, const char *data, const char *from)
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{
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/* Stop any pending timeout, if any */
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g_source_remove(server->sasl_timeout);
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g_critical("Authentication failed, make sure your credentials are correct and that the mechanism "
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"you have selected is supported by this server.");
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/* Terminate the negotiation */
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cap_finish_negotiation(server);
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}
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static void sasl_already (IRC_SERVER_REC *server, const char *data, const char *from)
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{
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g_source_remove(server->sasl_timeout);
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/* We're already authenticated, do nothing */
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cap_finish_negotiation(server);
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}
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static void sasl_success (IRC_SERVER_REC *server, const char *data, const char *from)
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{
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g_source_remove(server->sasl_timeout);
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/* The authentication succeeded, time to finish the CAP negotiation */
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g_warning("SASL authentication succeeded");
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cap_finish_negotiation(server);
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}
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static void sasl_step (IRC_SERVER_REC *server, const char *data, const char *from)
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{
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IRC_SERVER_CONNECT_REC *conn;
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GString *req;
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char *enc_req;
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conn = server->connrec;
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/* Stop the timer */
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g_source_remove(server->sasl_timeout);
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switch (conn->sasl_mechanism) {
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case SASL_MECHANISM_PLAIN:
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/* At this point we assume that conn->{username, password} are non-NULL.
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* The PLAIN mechanism expects a NULL-separated string composed by the authorization identity, the
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* authentication identity and the password.
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* The authorization identity field is optional and can be omitted, the server will derive the
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* identity by looking at the credentials provided.
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* The whole request is then encoded in base64. */
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req = g_string_new(NULL);
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g_string_append_c(req, '\0');
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g_string_append(req, conn->sasl_username);
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g_string_append_c(req, '\0');
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g_string_append(req, conn->sasl_password);
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enc_req = g_base64_encode((const guchar *)req->str, req->len);
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irc_send_cmdv(server, "AUTHENTICATE %s", enc_req);
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g_free(enc_req);
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g_string_free(req, TRUE);
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break;
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case SASL_MECHANISM_EXTERNAL:
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/* Empty response */
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irc_send_cmdv(server, "+");
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break;
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}
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/* We expect a response within a reasonable time */
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server->sasl_timeout = g_timeout_add(SASL_TIMEOUT, (GSourceFunc) sasl_timeout, server);
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}
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void sasl_init(void)
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{
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signal_add_first("server cap ack sasl", (SIGNAL_FUNC) sasl_start);
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signal_add_first("event authenticate", (SIGNAL_FUNC) sasl_step);
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signal_add_first("event 900", (SIGNAL_FUNC) sasl_success);
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signal_add_first("event 902", (SIGNAL_FUNC) sasl_fail);
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signal_add_first("event 904", (SIGNAL_FUNC) sasl_fail);
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signal_add_first("event 905", (SIGNAL_FUNC) sasl_fail);
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signal_add_first("event 907", (SIGNAL_FUNC) sasl_already);
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}
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void sasl_deinit(void)
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{
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signal_remove("server cap ack sasl", (SIGNAL_FUNC) sasl_start);
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signal_remove("event authenticate", (SIGNAL_FUNC) sasl_step);
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signal_remove("event 900", (SIGNAL_FUNC) sasl_success);
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signal_remove("event 902", (SIGNAL_FUNC) sasl_fail);
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signal_remove("event 904", (SIGNAL_FUNC) sasl_fail);
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signal_remove("event 905", (SIGNAL_FUNC) sasl_fail);
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signal_remove("event 907", (SIGNAL_FUNC) sasl_already);
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}
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14
src/irc/core/sasl.h
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14
src/irc/core/sasl.h
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@ -0,0 +1,14 @@
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#ifndef __SASL_H
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#define __SASL_H
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enum {
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SASL_MECHANISM_NONE = 0,
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SASL_MECHANISM_PLAIN,
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SASL_MECHANISM_EXTERNAL,
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SASL_MECHANISM_MAX
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};
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void sasl_init(void);
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void sasl_deinit(void);
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#endif
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