fix some channels not auto join

sirc.c

@@ -1110,16 +1110,24 @@ static int srv_alloc(void) {
 }
 
 static void srv_add_autojoin(int si, const char *chanlist) {
-    char tmp[512]; strncpy(tmp,chanlist,511);
-    char *tok=strtok(tmp,",");
+    char tmp[MAX_LINE]; strncpy(tmp, chanlist, MAX_LINE-1);
+    char *tok = strtok(tmp, ",");
     while (tok) {
-        while (*tok==' ') tok++;
-        if (*tok && g_srv[si].autojoin_count<MAX_AUTOJOIN) {
-            char ch[MAX_CHAN]; strncpy(ch,tok,MAX_CHAN-1);
-            if (ch[0]!='#') { memmove(ch+1,ch,strlen(ch)+1); ch[0]='#'; }
-            strncpy(g_srv[si].autojoin[g_srv[si].autojoin_count++],ch,MAX_CHAN-1);
+        /* trim leading and trailing spaces */
+        while (*tok == ' ') tok++;
+        char *end = tok + strlen(tok) - 1;
+        while (end > tok && *end == ' ') *end-- = '\0';
+        if (*tok && g_srv[si].autojoin_count < MAX_AUTOJOIN) {
+            char ch[MAX_CHAN]; strncpy(ch, tok, MAX_CHAN-1);
+            if (ch[0] != '#') { memmove(ch+1, ch, strlen(ch)+1); ch[0]='#'; }
+            /* avoid duplicates */
+            int dup = 0;
+            for (int i = 0; i < g_srv[si].autojoin_count; i++)
+                if (strcasecmp(g_srv[si].autojoin[i], ch) == 0) { dup=1; break; }
+            if (!dup)
+                strncpy(g_srv[si].autojoin[g_srv[si].autojoin_count++], ch, MAX_CHAN-1);
         }
-        tok=strtok(NULL,",");
+        tok = strtok(NULL, ",");
     }
 }
 
@@ -1492,15 +1500,20 @@ static void build_windows(void) {
 /* ── event handler ─────────────────────────────────────────────────────────── */
 
 static void do_rejoin_channels(int si) {
-    int any=0;
-    for (int i=0;i<g_chan_count;i++) {
-        if (g_chans[i].srv==si && g_chans[i].name[0]=='#') {
-            srv_sendf(si,"JOIN %s",g_chans[i].name); any=1;
-        }
-    }
-    if (!any) {
-        for (int j=0;j<g_srv[si].autojoin_count;j++)
-            srv_sendf(si,"JOIN %s",g_srv[si].autojoin[j]);
+    /* always join every configured autojoin channel */
+    for (int j = 0; j < g_srv[si].autojoin_count; j++)
+        srv_sendf(si, "JOIN %s", g_srv[si].autojoin[j]);
+
+    /* also rejoin any channels open from a previous session that aren't
+       in the autojoin list (e.g. channels joined manually before disconnect) */
+    for (int i = 0; i < g_chan_count; i++) {
+        if (g_chans[i].srv != si || g_chans[i].name[0] != '#') continue;
+        int already = 0;
+        for (int j = 0; j < g_srv[si].autojoin_count; j++)
+            if (strcasecmp(g_srv[si].autojoin[j], g_chans[i].name) == 0)
+                { already = 1; break; }
+        if (!already)
+            srv_sendf(si, "JOIN %s", g_chans[i].name);
     }
 }