initiating work on accel-pptpd, replacement of modified poptop

1 files changed, 229 insertions, 0 deletions

diff --git a/accel-pptpd/ppp_lcp.c b/accel-pptpd/ppp_lcp.c
new file mode 100644
index 00000000..8f9c88b9
--- /dev/null
+++ b/accel-pptpd/ppp_lcp.c
@@ -0,0 +1,229 @@
+#include <stdlib.h>
+#include <string.h>
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
+#include <arpa/inet.h>
+
+#include "triton/triton.h"
+
+#include "ppp.h"
+#include "ppp_fsm.h"
+#include "events.h"
+#include "log.h"
+
+char* accomp="allow,disabled";
+char* pcomp="allow,disabled";
+char* auth="pap,mschap-v2";
+char* mppe="allow,disabled";
+char* pwdb="radius";
+
+/*
+ * Options.
+ */
+#define CI_VENDOR	0	/* Vendor Specific */
+#define CI_MRU		1	/* Maximum Receive Unit */
+#define CI_ASYNCMAP	2	/* Async Control Character Map */
+#define CI_AUTHTYPE	3	/* Authentication Type */
+#define CI_QUALITY	4	/* Quality Protocol */
+#define CI_MAGICNUMBER	5	/* Magic Number */
+#define CI_PCOMPRESSION	7	/* Protocol Field Compression */
+#define CI_ACCOMPRESSION 8	/* Address/Control Field Compression */
+#define CI_FCSALTERN	9	/* FCS-Alternatives */
+#define CI_SDP		10	/* Self-Describing-Pad */
+#define CI_NUMBERED	11	/* Numbered-Mode */
+#define CI_CALLBACK	13	/* callback */
+#define CI_MRRU		17	/* max reconstructed receive unit; multilink */
+#define CI_SSNHF	18	/* short sequence numbers for multilink */
+#define CI_EPDISC	19	/* endpoint discriminator */
+#define CI_MPPLUS	22	/* Multi-Link-Plus-Procedure */
+#define CI_LDISC	23	/* Link-Discriminator */
+#define CI_LCPAUTH	24	/* LCP Authentication */
+#define CI_COBS		25	/* Consistent Overhead Byte Stuffing */
+#define CI_PREFELIS	26	/* Prefix Elision */
+#define CI_MPHDRFMT	27	/* MP Header Format */
+#define CI_I18N		28	/* Internationalization */
+#define CI_SDL		29	/* Simple Data Link */
+
+/*static void layer_up(struct ppp_layer_t*);
+static void layer_down(struct ppp_layer_t*);
+static void layer_started(struct ppp_layer_t*);
+static void layer_finished(struct ppp_layer_t*);*/
+static void send_conf_req(struct ppp_layer_t*);
+static void send_conf_ack(struct ppp_layer_t*);
+static void send_conf_nak(struct ppp_layer_t*);
+static void send_conf_rej(struct ppp_layer_t*);
+static void lcp_recv(struct ppp_layer_t*`);
+
+struct ppp_layer_t* ppp_lcp_init(struct ppp_t *ppp)
+{
+	struct ppp_layer_t *layer=malloc(sizeof(*layer));
+	memset(layer,0,sizeof(*layer));
+
+	layer->proto=PPP_PROTO_LCP;
+	layer->ppp=ppp;
+	ppp_fsm_init(layer);
+
+	layer->recv=lcp_recv;
+	layer->send_conf_req=send_conf_req;
+	layer->send_conf_ack=send_conf_ack;
+	layer->send_conf_nak=send_conf_nak;
+	layer->send_conf_rej=send_conf_rej;
+
+	ppp_fsm_init(layer);
+
+	return layer;
+}
+
+/*void ev_ppp_packet(int proto,struct ppp_t *ppp)
+{
+	struct ppp_hdr_t *hdr;
+
+	if (proto!=PPP_LCP) return;
+	if (ppp->in_buf_size-2<PPP_HEADERLEN)
+	{
+		log_debug("LCP: short packet received\n");
+		return;
+	}
+
+	hdr=(struct ppp_hdr_t *)(ppp->in_buf+2);
+	if (hdr->len<PPP_HEADERLEN)
+	{
+		log_debug("LCP: short packet received\n");
+		return;
+	}
+
+	//ppp_fsm_recv();
+}*/
+
+/*static void layer_up(struct ppp_layer_t*)
+{
+}
+static void layer_down(struct ppp_layer_t*)
+{
+}
+static void layer_started(struct ppp_layer_t*)
+{
+}
+static void layer_finished(struct ppp_layer_t*)
+{
+}*/
+static void send_conf_req(struct ppp_layer_t*l)
+{
+}
+static void send_conf_ack(struct ppp_layer_t*l)
+{
+}
+static void send_conf_nak(struct ppp_layer_t*l)
+{
+}
+static void send_conf_rej(struct ppp_layer_t*l)
+{
+}
+
+static int lcp_recv_conf_req(struct ppp_layer_t*l,u_int8_t *data,int size)
+{
+	struct ppp_opt_t *opt;
+	while(size)
+	{
+		opt=(struct ppp_opt_t *)data;
+		switch(opt->type)
+		{
+			case CI_MRU:
+				l->options.lcp.mru=*(u_int16_t*)data;
+				break;
+			case CI_ASYNCMAP:
+				break;
+			case CI_AUTHTYPE:
+				if (l->ppp->log) log_msg("<auth ");
+				switch(*(u_int16_t*)data)
+				{
+					case PPP_PAP:
+						if (l->ppp->log) log_msg("pap");
+						break;
+					case PPP_EAP:
+						if (l->ppp->log) log_msg("eap");
+						break;
+					case PPP_CHAP:
+						if (l->ppp->log) log_msg("chap");
+						break;
+						/*switch(data[4])
+						{
+							case 
+						}*/
+					default:
+						if (l->ppp->log) log_msg("unknown");
+						return -1;
+				}
+				if (l->ppp->log) log_msg(" auth>");
+			case CI_MAGICNUMBER:
+				if (*(u_int32_t*)data==l->magic_num)
+				{
+					log_error("loop detected\n");
+					return -1;
+				}
+				break;
+			case CI_PCOMPRESSION:
+			case CI_ACCOMPRESSION:
+		}
+	}
+	return 0;
+}
+
+static void lcp_recv(struct ppp_layer_t*l)
+{
+	struct ppp_hdr_t *hdr;
+	
+	if (l->ppp->in_buf_size-2<PPP_HEADERLEN)
+	{
+		log_debug("LCP: short packet received\n");
+		return;
+	}
+
+	hdr=(struct ppp_hdr_t *)(l->ppp->in_buf+2);
+	if (hdr->len<PPP_HEADERLEN)
+	{
+		log_debug("LCP: short packet received\n");
+		return;
+	}
+
+	l->recv_id=hdr->id;
+	switch(hdr->code)
+	{
+		case CONFREQ:
+			if (lcp_recv_conf_req(l,hdr->data,ntohs(hdr->len)-PPP_HDRLEN))
+				ppp_fsm_recv_conf_req_bad(l);
+			else
+				ppp_fsm_recv_conf_req_good(l);
+			break;
+		case CONFACK:
+			lcp_recv_conf_ack(l,hdr->data,ntohs(hdr->len)-PPP_HDRLEN);
+			ppp_fsm_recv_conf_ack(l);
+			break;
+		case CONFNAK:
+			lcp_recv_conf_nak(l,hdr->data,ntohs(hdr->len)-PPP_HDRLEN);
+			ppp_fsm_recv_conf_nak(l);
+			break;
+		case CONFREJ:
+			lcp_recv_conf_rej(l,hdr->data,ntohs(hdr->len)-PPP_HDRLEN);
+			ppp_fsm_recv_conf_rej(l);
+			break;
+		case TERMREQ:
+			ppp_fsm_recv_term_req(l);
+			break;
+		case TERMACK:
+			ppp_fsm_recv_term_ack(l);
+			break;
+		case CODEREJ:
+			ppp_fsm_recv_code_rej_bad(l);
+			break;
+		case ECHOREQ:
+			ppp_fsm_recv_echo_req(l);
+			break;
+		case ECHOREP:
+			lcp_recv_echo_rep(l);
+			break;
+		default:
+			ppp_fsm_recv_unk(l);
+			break;
+	}
+}