Add chmode +E, which prevents ops from using /kick on channels where it is set.

help/opers/cmode

@@ -31,6 +31,8 @@ NO PARAMETERS:
      +D     - Disable CTCP ACTION. All CTCP ACTIONs to the channel will
               be blocked.
      +T     - Disable notice. All notices to the channel are disallowed.
+     +E     - No kicks. Chanops will not be able to use /kick on this
+              channel.
 
 WITH PARAMETERS:
      +f     - Forward.  Forwards users who cannot join because of +i,

include/channel.h

@@ -174,6 +174,7 @@ typedef int (*ExtbanFunc)(const char *data, struct Client *client_p,
 #define MODE_NOCTCP     0x8000  /* Block CTCPs directed to this channel */
 #define MODE_NONOTICE	0x16000	/* Block notices directed to this channel */
 #define MODE_NOACTION	0x32000 /* Block CTCP ACTION directed to this channel */
+#define MODE_NOKICK	0x64000 /* Disable /kick on this channel */
 
 #define CHFL_BAN        0x10000000	/* ban channel flag */
 #define CHFL_EXCEPTION  0x20000000	/* exception to ban channel flag */

include/numeric.h

@@ -319,6 +319,8 @@ extern const char *form_str(int);
 
 #define ERR_DISABLED         517 /* from ircu */
 
+#define ERR_NOKICK           519 /* from old shadow */
+
 #define ERR_HELPNOTFOUND     524
 
 #define RPL_WHOISSECURE      671 /* Unreal3.2 --nenolod */

modules/core/m_kick.c

@@ -158,6 +158,14 @@ m_kick(struct Client *client_p, struct Client *source_p, int parc, const char *p
 			return 0;
 		}
 
+		if(MyClient(source_p) && chptr->mode.mode & MODE_NOKICK)
+		{
+			sendto_one_numeric(source_p, ERR_NOKICK,
+					form_str(ERR_NOKICK),
+					chptr->chname);
+			return 0;
+		}
+
 		if(MyClient(source_p))
 		{
 			hook_data_channel_approval hookdata;

src/chmode.c

@@ -1401,7 +1401,7 @@ struct ChannelMode chmode_table[256] =
   {chm_nosuch,	0 },			/* B */
   {chm_simple,	MODE_NOCTCP },		/* C */
   {chm_simple,	MODE_NOACTION },	/* D */
-  {chm_nosuch,	0 },			/* E */
+  {chm_simple,	MODE_NOKICK },		/* E */
   {chm_simple,	MODE_FREETARGET },	/* F */
   {chm_nosuch,	0 },			/* G */
   {chm_nosuch,	0 },			/* H */

src/messages.tab

@@ -540,7 +540,7 @@ static  const char *  replies[] = {
 /* 516 */	NULL,
 /* 517 ERR_DISABLED */		"%s :This command has been administratively disabled",
 /* 518 */	NULL,
-/* 519 */	NULL,
+/* 519 ERR_NOKICK */		"%s :You cannot kick users in this channel because +E is set",
 /* 520 */	NULL,
 /* 521 */	NULL,
 /* 522 */	NULL,