add SASL EXTERNAL support

Author: mcpcpc

kirc.c

@@ -19,6 +19,7 @@
 static int    conn;                      /* connection socket */
 static char   chan_default[MSG_MAX];     /* default channel for PRIVMSG */
 static int    verb = 0;                  /* verbose output (e.g. raw stream) */
+static int    sasl = 0;                  /* SASL method (PLAIN=0, EXTERNAL=1) */
 static size_t cmax = 80;                 /* max number of chars per line */
 static size_t gutl = 20;                 /* max char width of left column */
 static char * host = "irc.freenode.org"; /* irc host address */
@@ -144,11 +145,6 @@ raw_parser(char *string) {
         return;
     }
 
-    if (!strncmp(string, "AUTHENTICATE +", 14)) {
-        raw("AUTHENTICATE %s\r\n", auth);
-        return;
-    }
-
     if (string[0] != ':') return;
 
     if (olog) log_append(string, olog);
@@ -164,8 +160,6 @@ raw_parser(char *string) {
             strcpy(chan_default, tok);
             raw("JOIN #%s\r\n", tok);
         } return;
-    } else if (!strncmp(command, "90", 2)) {
-        raw("CAP END\r\n");
     } else if (!strncmp(command, "QUIT", 4) || !strncmp(command, "PART", 4)) {
         printf("%*s<-- \x1b[34;1m%s\x1b[0m\n", g - 3, "", nickname);
         return;
@@ -275,7 +269,7 @@ static void
 usage(void) {
     fputs("kirc [-s hostname] [-p port] [-c channel] [-n nick] \
 [-r real_name] [-u username] [-k password] [-a token] [-x init_command] \
-[-w columns] [-W columns] [-o path] [-h|v|V]\n", stderr);
+[-w columns] [-W columns] [-o path] [-e|v|V]\n", stderr);
     exit(EXIT_FAILURE);
 }
 
@@ -284,9 +278,10 @@ main(int argc, char **argv) {
 
     int cval;
 
-    while ((cval = getopt(argc, argv, "s:p:o:n:k:c:u:r:x:w:W:a:hvV")) != -1) {
+    while ((cval = getopt(argc, argv, "s:p:o:n:k:c:u:r:x:w:W:a:hevV")) != -1) {
         switch (cval) {
-            case 'V' : verb = 1;             break;
+            case 'V' : ++verb;               break;
+            case 'e' : ++sasl;               break;
             case 's' : host = optarg;        break;
             case 'p' : port = optarg;        break;
             case 'r' : real = optarg;        break;
@@ -313,10 +308,12 @@ main(int argc, char **argv) {
         return EXIT_FAILURE;
     }
 
-    if (auth) raw("CAP REQ :sasl\r\n");
+    if (auth || sasl) raw("CAP REQ :sasl\r\n");
     raw("NICK %s\r\n", nick);
     raw("USER %s - - :%s\r\n", (user ? user : nick), (real ? real : nick));
-    if (auth) raw("AUTHENTICATE PLAIN\r\n");
+    if (auth || sasl) raw("AUTHENTICATE %s\r\n", (sasl ? "EXTERNAL" : "PLAIN"));
+    if (auth || sasl) raw("AUTHENTICATE %s\r\n", (sasl ? "+" : auth));
+    if (auth || sasl) raw("CAP END\r\n");
     if (pass) raw("PASS %s\r\n", pass);
     if (inic) raw("%s\r\n", inic);