ppp: force to send dns

4 files changed, 85 insertions, 60 deletions

diff --git a/accel-pppd/ppp/ipcp_opt_dns.c b/accel-pppd/ppp/ipcp_opt_dns.c
index 19183eb..a62fc49 100644
--- a/accel-pppd/ppp/ipcp_opt_dns.c
+++ b/accel-pppd/ppp/ipcp_opt_dns.c
@@ -19,51 +19,53 @@ static void dns_free(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt);
 static int dns_send_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr);
 static int dns_send_conf_nak(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr);
 static int dns_recv_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr);
-static void dns1_print(void (*print)(const char *fmt,...),struct ipcp_option_t*, uint8_t *ptr);
-static void dns2_print(void (*print)(const char *fmt,...),struct ipcp_option_t*, uint8_t *ptr);
+static int dns_recv_conf_rej(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr);
+static void dns1_print(void (*print)(const char *fmt,...), struct ipcp_option_t*, uint8_t *ptr);
+static void dns2_print(void (*print)(const char *fmt,...), struct ipcp_option_t*, uint8_t *ptr);
 
 struct dns_option_t
 {
 	struct ipcp_option_t opt;
 	in_addr_t addr;
+	int rejected;
 };
 
-static struct ipcp_option_handler_t dns1_opt_hnd=
-{
-	.init=dns1_init,
-	.send_conf_req=dns_send_conf_req,
-	.send_conf_nak=dns_send_conf_nak,
-	.recv_conf_req=dns_recv_conf_req,
-	.free=dns_free,
-	.print=dns1_print,
+static struct ipcp_option_handler_t dns1_opt_hnd = {
+	.init = dns1_init,
+	.send_conf_req = dns_send_conf_req,
+	.send_conf_nak = dns_send_conf_nak,
+	.recv_conf_req = dns_recv_conf_req,
+	.recv_conf_rej = dns_recv_conf_rej,
+	.free = dns_free,
+	.print = dns1_print,
 };
 
-static struct ipcp_option_handler_t dns2_opt_hnd=
-{
-	.init=dns2_init,
-	.send_conf_req=dns_send_conf_req,
-	.send_conf_nak=dns_send_conf_nak,
-	.recv_conf_req=dns_recv_conf_req,
-	.free=dns_free,
-	.print=dns2_print,
+static struct ipcp_option_handler_t dns2_opt_hnd = {
+	.init = dns2_init,
+	.send_conf_req = dns_send_conf_req,
+	.send_conf_nak = dns_send_conf_nak,
+	.recv_conf_req = dns_recv_conf_req,
+	.recv_conf_rej = dns_recv_conf_rej,
+	.free = dns_free,
+	.print = dns2_print,
 };
 
 static struct ipcp_option_t *dns1_init(struct ppp_ipcp_t *ipcp)
 {
-	struct dns_option_t *dns_opt=_malloc(sizeof(*dns_opt));
-	memset(dns_opt,0,sizeof(*dns_opt));
-	dns_opt->opt.id=CI_DNS1;
-	dns_opt->opt.len=6;
+	struct dns_option_t *dns_opt = _malloc(sizeof(*dns_opt));
+	memset(dns_opt, 0, sizeof(*dns_opt));
+	dns_opt->opt.id = CI_DNS1;
+	dns_opt->opt.len = 6;
 
 	return &dns_opt->opt;
 }
 
 static struct ipcp_option_t *dns2_init(struct ppp_ipcp_t *ipcp)
 {
-	struct dns_option_t *dns_opt=_malloc(sizeof(*dns_opt));
-	memset(dns_opt,0,sizeof(*dns_opt));
-	dns_opt->opt.id=CI_DNS2;
-	dns_opt->opt.len=6;
+	struct dns_option_t *dns_opt = _malloc(sizeof(*dns_opt));
+	memset(dns_opt, 0, sizeof(*dns_opt));
+	dns_opt->opt.id = CI_DNS2;
+	dns_opt->opt.len = 6;
 
 	return &dns_opt->opt;
 }
@@ -77,67 +79,90 @@ static void dns_free(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt)
 
 static int dns_send_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr)
 {
-	return 0;
+	struct dns_option_t *dns_opt = container_of(opt, typeof(*dns_opt), opt);
+	struct ipcp_opt32_t *opt32 = (struct ipcp_opt32_t *)ptr;
+
+	if (!dns_opt->addr || dns_opt->rejected)
+		return 0;
+	
+	opt32->hdr.id = dns_opt->opt.id;
+	opt32->hdr.len = 6;
+	opt32->val = 0;
+
+	return 6;
 }
 
 static int dns_send_conf_nak(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr)
 {
-	struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt);
-	struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr;
-	opt32->hdr.id=dns_opt->opt.id;
-	opt32->hdr.len=6;
-	opt32->val=dns_opt->addr;
+	struct dns_option_t *dns_opt = container_of(opt, typeof(*dns_opt), opt);
+	struct ipcp_opt32_t *opt32 = (struct ipcp_opt32_t *)ptr;
+	opt32->hdr.id = dns_opt->opt.id;
+	opt32->hdr.len = 6;
+	opt32->val = dns_opt->addr;
 	return 6;
 }
 
 static int dns_recv_conf_req(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr)
 {
-	struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt);
-	struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr;
+	struct dns_option_t *dns_opt = container_of(opt, typeof(*dns_opt), opt);
+	struct ipcp_opt32_t *opt32 = (struct ipcp_opt32_t*)ptr;
 
 	if (opt32->hdr.len != 6)
 		return IPCP_OPT_REJ;
 
-	if (!dns_opt->addr)
-	{
-		if (dns_opt->opt.id == CI_DNS1 && conf_dns1) dns_opt->addr=conf_dns1;
-		else if (dns_opt->opt.id == CI_DNS2 && conf_dns2) dns_opt->addr=conf_dns2;
+	if (!dns_opt->addr)	{
+		if (dns_opt->opt.id == CI_DNS1 && conf_dns1)
+			dns_opt->addr=conf_dns1;
+		else if (dns_opt->opt.id == CI_DNS2 && conf_dns2)
+			dns_opt->addr=conf_dns2;
 		
-		if (!dns_opt->addr)
-		{
-			dns_opt->addr=opt32->val;
+		if (!dns_opt->addr) {
+			dns_opt->addr = opt32->val;
 			return IPCP_OPT_ACK;
 		}
 	}
 
-	if (dns_opt->addr==opt32->val)
+	if (dns_opt->addr == opt32->val)
 		return IPCP_OPT_ACK;
 		
 	return IPCP_OPT_NAK;
 }
 
-static void dns1_print(void (*print)(const char *fmt,...),struct ipcp_option_t *opt, uint8_t *ptr)
+static int dns_recv_conf_rej(struct ppp_ipcp_t *ipcp, struct ipcp_option_t *opt, uint8_t *ptr)
 {
-	struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt);
-	struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr;
+	struct dns_option_t *dns_opt = container_of(opt, typeof(*dns_opt), opt);
+
+	dns_opt->rejected = 1;
+
+	return 0;
+}
+
+static void dns1_print(void (*print)(const char *fmt,...), struct ipcp_option_t *opt, uint8_t *ptr)
+{
+	struct dns_option_t *dns_opt = container_of(opt, typeof(*dns_opt), opt);
+	struct ipcp_opt32_t *opt32 = (struct ipcp_opt32_t *)ptr;
 	struct in_addr in;
 
-	if (ptr) in.s_addr=opt32->val;
-	else in.s_addr=dns_opt->addr;
+	if (ptr)
+		in.s_addr = opt32->val;
+	else
+		in.s_addr = dns_opt->addr;
 	
-	print("<dns1 %s>",inet_ntoa(in));
+	print("<dns1 %s>", inet_ntoa(in));
 }
 
-static void dns2_print(void (*print)(const char *fmt,...),struct ipcp_option_t *opt, uint8_t *ptr)
+static void dns2_print(void (*print)(const char *fmt,...), struct ipcp_option_t *opt, uint8_t *ptr)
 {
-	struct dns_option_t *dns_opt=container_of(opt,typeof(*dns_opt),opt);
-	struct ipcp_opt32_t *opt32=(struct ipcp_opt32_t*)ptr;
+	struct dns_option_t *dns_opt = container_of(opt, typeof(*dns_opt), opt);
+	struct ipcp_opt32_t *opt32 = (struct ipcp_opt32_t *)ptr;
 	struct in_addr in;
 
-	if (ptr) in.s_addr=opt32->val;
-	else in.s_addr=dns_opt->addr;
+	if (ptr)
+		in.s_addr = opt32->val;
+	else
+		in.s_addr = dns_opt->addr;
 	
-	print("<dns2 %s>",inet_ntoa(in));
+	print("<dns2 %s>", inet_ntoa(in));
 }
 
 static void ev_dns(struct ev_dns_t *ev)
diff --git a/accel-pppd/ppp/lcp_opt_mru.c b/accel-pppd/ppp/lcp_opt_mru.c
index 577e019..8aaede0 100644
--- a/accel-pppd/ppp/lcp_opt_mru.c
+++ b/accel-pppd/ppp/lcp_opt_mru.c
@@ -118,7 +118,7 @@ static int mru_recv_conf_ack(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, ui
 {
 	struct mru_option_t *mru_opt = container_of(opt,typeof(*mru_opt), opt);
 	struct ifreq ifr = {
-		.ifr_mtu = mru_opt->mtu,
+		.ifr_mtu = mru_opt->mtu < mru_opt->mru ? mru_opt->mtu : mru_opt->mru,
 	};
 
 	strcpy(ifr.ifr_name, lcp->ppp->ifname);
diff --git a/accel-pppd/ppp/ppp_ipcp.c b/accel-pppd/ppp/ppp_ipcp.c
index 9ec92d4..6fcf05b 100644
--- a/accel-pppd/ppp/ppp_ipcp.c
+++ b/accel-pppd/ppp/ppp_ipcp.c
@@ -265,18 +265,18 @@ static int send_conf_req(struct ppp_fsm_t *fsm)
 			return -1;
 		}
 		if (n) {
+			lopt->ptr = ptr;
 			ptr += n;
-			lopt->print = 1;
 		} else
-			lopt->print = 0;
+			lopt->ptr = NULL;
 	}
 
 	if (conf_ppp_verbose) {
 		log_ppp_info2("send [IPCP ConfReq id=%x", ipcp_hdr->id);
 		list_for_each_entry(lopt,&ipcp->options,entry) {
-			if (lopt->print) {
+			if (lopt->ptr) {
 				log_ppp_info2(" ");
-				lopt->h->print(log_ppp_info2, lopt, NULL);
+				lopt->h->print(log_ppp_info2, lopt, lopt->ptr);
 			}
 		}
 		log_ppp_info2("]\n");
diff --git a/accel-pppd/ppp/ppp_ipcp.h b/accel-pppd/ppp/ppp_ipcp.h
index 301bdce..e430d7b 100644
--- a/accel-pppd/ppp/ppp_ipcp.h
+++ b/accel-pppd/ppp/ppp_ipcp.h
@@ -58,7 +58,7 @@ struct ipcp_option_t
 	int id;
 	int len;
 	int state;
-	int print:1;
+	uint8_t *ptr;
 	struct ipcp_option_handler_t *h;
 };