reworked/rewrited lcp handling code to become more abstract

1 files changed, 92 insertions, 0 deletions

diff --git a/accel-pptpd/lcp_opt_pcomp.c b/accel-pptpd/lcp_opt_pcomp.c
new file mode 100644
index 0000000..79d77c6
--- /dev/null
+++ b/accel-pptpd/lcp_opt_pcomp.c
@@ -0,0 +1,92 @@
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "ppp.h"
+#include "ppp_lcp.h"
+#include "log.h"
+
+static struct lcp_option_t *pcomp_init(struct ppp_lcp_t *lcp);
+static void pcomp_free(struct ppp_lcp_t *lcp, struct lcp_option_t *opt);
+static int pcomp_send_conf_req(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, uint8_t *ptr);
+static int pcomp_send_conf_nak(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, uint8_t *ptr);
+static int pcomp_recv_conf_req(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, uint8_t *ptr);
+static void pcomp_print(void (*print)(const char *fmt,...),struct lcp_option_t*, uint8_t *ptr);
+
+struct pcomp_option_t
+{
+	struct lcp_option_t opt;
+	int pcomp; // 0 - disabled, 1 - enabled, 2 - allow,disabled, 3 - allow,enabled
+};
+
+static struct lcp_option_handler_t pcomp_opt_hnd=
+{
+	.init=pcomp_init,
+	.send_conf_req=pcomp_send_conf_req,
+	.send_conf_nak=pcomp_send_conf_nak,
+	.recv_conf_req=pcomp_recv_conf_req,
+	.free=pcomp_free,
+	.print=pcomp_print,
+};
+
+static struct lcp_option_t *pcomp_init(struct ppp_lcp_t *lcp)
+{
+	struct pcomp_option_t *pcomp_opt=malloc(sizeof(*pcomp_opt));
+	memset(pcomp_opt,0,sizeof(*pcomp_opt));
+	pcomp_opt->pcomp=2;
+	pcomp_opt->opt.id=CI_PCOMP;
+	pcomp_opt->opt.len=2;
+
+	return &pcomp_opt->opt;
+}
+
+static void pcomp_free(struct ppp_lcp_t *lcp, struct lcp_option_t *opt)
+{
+	struct pcomp_option_t *pcomp_opt=container_of(opt,typeof(*pcomp_opt),opt);
+
+	free(pcomp_opt);
+}
+
+static int pcomp_send_conf_req(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, uint8_t *ptr)
+{
+	struct pcomp_option_t *pcomp_opt=container_of(opt,typeof(*pcomp_opt),opt);
+	struct lcp_opt_hdr_t *opt0=(struct lcp_opt_hdr_t*)ptr;
+	if (pcomp_opt->pcomp==1 || pcomp_opt->pcomp==3)
+	{
+		opt0->id=CI_PCOMP;
+		opt0->len=2;
+		return 2;
+	}
+	return 0;
+}
+
+static int pcomp_send_conf_nak(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, uint8_t *ptr)
+{
+	struct pcomp_option_t *pcomp_opt=container_of(opt,typeof(*pcomp_opt),opt);
+	struct lcp_opt_hdr_t *opt0=(struct lcp_opt_hdr_t*)ptr;
+	opt0->id=CI_PCOMP;
+	opt0->len=2;
+	return 2;
+}
+
+static int pcomp_recv_conf_req(struct ppp_lcp_t *lcp, struct lcp_option_t *opt, uint8_t *ptr)
+{
+	struct pcomp_option_t *pcomp_opt=container_of(opt,typeof(*pcomp_opt),opt);
+
+	if (pcomp_opt->pcomp>0)
+	{
+		pcomp_opt->pcomp=1;
+		return LCP_OPT_ACK;
+	}else return LCP_OPT_NAK;
+}
+
+static void pcomp_print(void (*print)(const char *fmt,...),struct lcp_option_t *opt, uint8_t *ptr)
+{
+	print("<pcomp>");
+}
+
+static void __init pcomp_opt_init()
+{
+	lcp_option_register(&pcomp_opt_hnd);
+}
+