From 364e59f82a86759738c1a0ea5362dad2a0b8c73c Mon Sep 17 00:00:00 2001
From: Jilles Tjoelker <jilles@stack.nl>
Date: Sat, 14 Sep 2013 12:26:32 +0200
Subject: [PATCH] whowas: Use the normal rules for IP visibility.

Add the flags (auth{} spoof, dynamic spoof) to struct Whowas and add a
show_ip_whowas().

Normal users now see IPs of unspoofed users, and remote opers can see IPs
behind dynamic spoofs. Also, general::hide_spoof_ips is now applied when
the IP is shown, not when the client exits.
---
 doc/reference.conf |  2 --
 include/client.h   |  1 +
 include/whowas.h   |  5 +++++
 modules/m_whowas.c |  4 +++-
 src/client.c       | 12 ++++++++++++
 src/whowas.c       |  7 +++----
 6 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/doc/reference.conf b/doc/reference.conf
index 7e638915..c36a36ce 100755
--- a/doc/reference.conf
+++ b/doc/reference.conf
@@ -940,8 +940,6 @@ general {
 	 * If disabled, local opers can see them.
 	 * Dynamic spoofs (e.g. set by services) are unaffected by this;
 	 * any oper (local and remote) can see the real ip.
-	 * Warning: for whowas, this is checked when the client exits,
-	 * not when the IP is shown.
 	 */
 	hide_spoof_ips = yes;
 
diff --git a/include/client.h b/include/client.h
index 7b73579e..0249e187 100644
--- a/include/client.h
+++ b/include/client.h
@@ -597,6 +597,7 @@ extern void del_all_accepts(struct Client *client_p);
 extern void dead_link(struct Client *client_p, int sendqex);
 extern int show_ip(struct Client *source_p, struct Client *target_p);
 extern int show_ip_conf(struct ConfItem *aconf, struct Client *source_p);
+extern int show_ip_whowas(struct Whowas *whowas, struct Client *source_p);
 
 extern void initUser(void);
 extern void free_user(struct User *, struct Client *);
diff --git a/include/whowas.h b/include/whowas.h
index 616badd7..ca3dde9f 100644
--- a/include/whowas.h
+++ b/include/whowas.h
@@ -55,6 +55,7 @@ struct Whowas
 	char sockhost[HOSTIPLEN + 1];
 	char realname[REALLEN + 1];
 	char suser[NICKLEN + 1];
+	unsigned char flags;
 	const char *servername;
 	time_t logoff;
 	struct Client *online;	/* Pointer to new nickname for chasing or NULL */
@@ -64,6 +65,10 @@ struct Whowas
 	struct Whowas *cprev;	/* for client struct linked list */
 };
 
+/* Flags */
+#define WHOWAS_IP_SPOOFING	0x1
+#define WHOWAS_DYNSPOOF		0x2
+
 /*
 ** initwhowas
 */
diff --git a/modules/m_whowas.c b/modules/m_whowas.c
index c0f10b66..ec3cac35 100644
--- a/modules/m_whowas.c
+++ b/modules/m_whowas.c
@@ -117,7 +117,9 @@ m_whowas(struct Client *client_p, struct Client *source_p, int parc, const char
 			sendto_one(source_p, form_str(RPL_WHOWASUSER),
 				   me.name, source_p->name, temp->name,
 				   temp->username, temp->hostname, temp->realname);
-			if (MyOper(source_p) && !EmptyString(temp->sockhost))
+			if (!EmptyString(temp->sockhost) &&
+					strcmp(temp->sockhost, "0") &&
+					show_ip_whowas(temp, source_p))
 #if 0
 				sendto_one(source_p, form_str(RPL_WHOWASREAL),
 					   me.name, source_p->name, temp->name,
diff --git a/src/client.c b/src/client.c
index 23436ab7..13320f66 100644
--- a/src/client.c
+++ b/src/client.c
@@ -1690,6 +1690,18 @@ show_ip_conf(struct ConfItem *aconf, struct Client *source_p)
 		return 1;
 }
 
+int
+show_ip_whowas(struct Whowas *whowas, struct Client *source_p)
+{
+	if(whowas->flags & WHOWAS_IP_SPOOFING)
+		if(ConfigFileEntry.hide_spoof_ips || !MyOper(source_p))
+			return 0;
+	if(whowas->flags & WHOWAS_DYNSPOOF)
+		if(!IsOper(source_p))
+			return 0;
+	return 1;
+}
+
 /*
  * make_user
  *
diff --git a/src/whowas.c b/src/whowas.c
index aafe91b4..716bdccd 100644
--- a/src/whowas.c
+++ b/src/whowas.c
@@ -83,10 +83,9 @@ void add_history(struct Client *client_p, int online)
 	strcpy(who->hostname, client_p->host);
 	strcpy(who->realname, client_p->info);
 	strcpy(who->suser, client_p->user->suser);
-	if (!EmptyString(client_p->sockhost) && strcmp(client_p->sockhost, "0") && show_ip(NULL, client_p))
-		strcpy(who->sockhost, client_p->sockhost);
-	else
-		who->sockhost[0] = '\0';
+	strcpy(who->sockhost, client_p->sockhost);
+	who->flags = (IsIPSpoof(client_p) ? WHOWAS_IP_SPOOFING : 0) |
+		(IsDynSpoof(client_p) ? WHOWAS_DYNSPOOF : 0);
 
 	who->servername = scache_get_name(client_p->servptr->serv->nameinfo);