From 687ec880201e4872a9abf72f5efe135164fc349b Mon Sep 17 00:00:00 2001
From: dequis <dx@dxzone.com.ar>
Date: Sat, 12 Sep 2015 05:25:33 -0300
Subject: IRCv3 multi-prefix... but mostly just adding prefixes to WHO

We can't actually have multiple prefixes internally, so the only thing
missing for multi-prefix compliance is actually having the prefix in the
WHO reply, which is a rfc1459 thing.

Note to future self: check irc logs for the implementation I threw away.
The one that actually handled multiple prefixes. I hope that's useful.
---
 irc.h         |  4 ++--
 irc_cap.c     |  3 +--
 irc_channel.c | 12 ++++++++++++
 irc_send.c    | 32 +++++++++++++++++++-------------
 4 files changed, 34 insertions(+), 17 deletions(-)

diff --git a/irc.h b/irc.h
index c7d1aa85..4be7ce7e 100644
--- a/irc.h
+++ b/irc.h
@@ -66,8 +66,7 @@ typedef enum {
 } irc_status_t;
 
 typedef enum {
-	CAP_FOO = (1 << 0),
-	CAP_BAR = (1 << 1),
+	CAP_MULTI_PREFIX = (1 << 1),
 } irc_cap_flag_t;
 
 struct irc_user;
@@ -308,6 +307,7 @@ int irc_channel_name_cmp(const char *a_, const char *b_);
 char *irc_channel_name_gen(irc_t *irc, const char *name);
 gboolean irc_channel_name_hint(irc_channel_t *ic, const char *name);
 void irc_channel_update_ops(irc_channel_t *ic, char *value);
+char irc_channel_user_get_prefix(irc_channel_user_t *icu);
 char *set_eval_irc_channel_ops(struct set *set, char *value);
 gboolean irc_channel_wants_user(irc_channel_t *ic, irc_user_t *iu);
 
diff --git a/irc_cap.c b/irc_cap.c
index 3b139c94..79732409 100644
--- a/irc_cap.c
+++ b/irc_cap.c
@@ -37,8 +37,7 @@ typedef struct {
 } cap_info_t;
 
 static const cap_info_t supported_caps[] = {
-	{"foo", CAP_FOO},
-	{"bar", CAP_BAR},
+	{"multi-prefix", CAP_MULTI_PREFIX},
 	{NULL},
 };
 
diff --git a/irc_channel.c b/irc_channel.c
index cbd306a3..714e974a 100644
--- a/irc_channel.c
+++ b/irc_channel.c
@@ -428,6 +428,18 @@ void irc_channel_set_mode(irc_channel_t *ic, const char *s)
 	}
 }
 
+char irc_channel_user_get_prefix(irc_channel_user_t *icu)
+{
+	if (icu->flags & IRC_CHANNEL_USER_OP) {
+		return '@';
+	} else if (icu->flags & IRC_CHANNEL_USER_HALFOP) {
+		return '%';
+	} else if (icu->flags & IRC_CHANNEL_USER_VOICE) {
+		return '+';
+	}
+	return 0;
+}
+
 void irc_channel_auto_joins(irc_t *irc, account_t *acc)
 {
 	GSList *l;
diff --git a/irc_send.c b/irc_send.c
index a76b5bb1..4dbc82d5 100644
--- a/irc_send.c
+++ b/irc_send.c
@@ -213,13 +213,8 @@ void irc_send_names(irc_channel_t *ic)
 			*namelist = 0;
 		}
 
-		if (icu->flags & IRC_CHANNEL_USER_OP) {
-			strcat(namelist, "@");
-		} else if (icu->flags & IRC_CHANNEL_USER_HALFOP) {
-			strcat(namelist, "%");
-		} else if (icu->flags & IRC_CHANNEL_USER_VOICE) {
-			strcat(namelist, "+");
-		}
+		namelist[strlen(namelist) + 1] = '\0';
+		namelist[strlen(namelist)] = irc_channel_user_get_prefix(icu);
 
 		strcat(namelist, iu->nick);
 		strcat(namelist, " ");
@@ -293,15 +288,26 @@ void irc_send_who(irc_t *irc, GSList *l, const char *channel)
 	gboolean is_channel = strchr(CTYPES, channel[0]) != NULL;
 
 	while (l) {
-		irc_user_t *iu = l->data;
+		irc_user_t *iu;
+
+		/* Null terminated string with three chars, respectively:
+		 * { <H|G>, <@|%|+|\0>, \0 } */
+		char status_prefix[3] = {0};
+
+		/* rfc1459 doesn't mention this: G means gone, H means here */
+		status_prefix[0] = iu->flags & IRC_USER_AWAY ? 'G' : 'H';
+
 		if (is_channel) {
-			iu = ((irc_channel_user_t *) iu)->iu;
+			irc_channel_user_t *icu = l->data;
+			status_prefix[1] = irc_channel_user_get_prefix(icu);
+			iu = icu->iu;
+		} else {
+			iu = l->data;
 		}
-		/* TODO(wilmer): Restore away/channel information here */
-		irc_send_num(irc, 352, "%s %s %s %s %s %c :0 %s",
+
+		irc_send_num(irc, 352, "%s %s %s %s %s %s :0 %s",
 		             is_channel ? channel : "*", iu->user, iu->host, irc->root->host,
-		             iu->nick, iu->flags & IRC_USER_AWAY ? 'G' : 'H',
-		             iu->fullname);
+		             iu->nick, status_prefix, iu->fullname);
 		l = l->next;
 	}
 
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