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-rw-r--r--packet-ppp.c254
1 files changed, 245 insertions, 9 deletions
diff --git a/packet-ppp.c b/packet-ppp.c
index 31b8c7f8f6..a96217f9cc 100644
--- a/packet-ppp.c
+++ b/packet-ppp.c
@@ -1,7 +1,7 @@
/* packet-ppp.c
* Routines for ppp packet disassembly
*
- * $Id: packet-ppp.c,v 1.10 1999/03/23 03:14:43 gram Exp $
+ * $Id: packet-ppp.c,v 1.11 1999/06/11 15:30:39 gram Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
@@ -67,6 +67,116 @@ typedef struct _e_ppphdr {
#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
#define PPP_CBCP 0xc029 /* Callback Control Protocol */
+
+static const value_string ppp_vals[] = {
+ {PPP_IP, "IP" },
+ {PPP_AT, "Appletalk" },
+ {PPP_IPX, "Netware IPX/SPX"},
+ {PPP_VJC_COMP, "VJ compressed TCP"},
+ {PPP_VJC_UNCOMP,"VJ uncompressed TCP"},
+ {PPP_VINES, "Vines" },
+ {PPP_IPV6, "IPv6" },
+ {PPP_COMP, "compressed packet" },
+ {PPP_IPCP, "IP Control Protocol" },
+ {PPP_ATCP, "AppleTalk Control Protocol" },
+ {PPP_IPXCP, "IPX Control Protocol" },
+ {PPP_CCP, "Compression Control Protocol" },
+ {PPP_LCP, "Link Control Protocol" },
+ {PPP_PAP, "Password Authentication Protocol" },
+ {PPP_LQR, "Link Quality Report protocol" },
+ {PPP_CHAP, "Cryptographic Handshake Auth. Protocol" },
+ {PPP_CBCP, "Callback Control Protocol" },
+ {0, NULL } };
+
+/* CP (LCP, IPCP, etc.) codes.
+ * from pppd fsm.h
+ */
+#define CONFREQ 1 /* Configuration Request */
+#define CONFACK 2 /* Configuration Ack */
+#define CONFNAK 3 /* Configuration Nak */
+#define CONFREJ 4 /* Configuration Reject */
+#define TERMREQ 5 /* Termination Request */
+#define TERMACK 6 /* Termination Ack */
+#define CODEREJ 7 /* Code Reject */
+
+static const value_string cp_vals[] = {
+ {CONFREQ, "Configuration Request " },
+ {CONFACK, "Configuration Ack " },
+ {CONFNAK, "Configuration Nak " },
+ {CONFREJ, "Configuration Reject " },
+ {TERMREQ, "Termination Request " },
+ {TERMACK, "Termination Ack " },
+ {CODEREJ, "Code Reject " },
+ {0, NULL } };
+
+/*
+ * LCP-specific packet types.
+ */
+#define PROTREJ 8 /* Protocol Reject */
+#define ECHOREQ 9 /* Echo Request */
+#define ECHOREP 10 /* Echo Reply */
+#define DISCREQ 11 /* Discard Request */
+#define CBCP_OPT 6 /* Use callback control protocol */
+
+static const value_string lcp_vals[] = {
+ {CONFREQ, "Configuration Request " },
+ {CONFACK, "Configuration Ack " },
+ {CONFNAK, "Configuration Nak " },
+ {CONFREJ, "Configuration Reject " },
+ {TERMREQ, "Termination Request " },
+ {TERMACK, "Termination Ack " },
+ {CODEREJ, "Code Reject " },
+ {PROTREJ, "Protocol Reject " },
+ {ECHOREQ, "Echo Request " },
+ {ECHOREP, "Echo Reply " },
+ {DISCREQ, "Discard Request " },
+ {CBCP_OPT, "Use callback control protocol" },
+ {0, NULL } };
+
+/*
+ * Options. (LCP)
+ */
+#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_CALLBACK 13 /* callback */
+
+static const value_string lcp_opt_vals[] = {
+ {CI_MRU, "Maximum Receive Unit" },
+ {CI_ASYNCMAP, "Async Control Character Map" },
+ {CI_AUTHTYPE, "Authentication Type" },
+ {CI_QUALITY, "Quality Protocol" },
+ {CI_MAGICNUMBER, "Magic Number" },
+ {CI_PCOMPRESSION, "Protocol Field Compression" },
+ {CI_ACCOMPRESSION,"Address/Control Field Compression" },
+ {CI_CALLBACK, "callback" },
+ {0, NULL } };
+
+/*
+ * Options. (IPCP)
+ */
+#define CI_ADDRS 1 /* IP Addresses */
+#define CI_COMPRESSTYPE 2 /* Compression Type */
+#define CI_ADDR 3
+#define CI_MS_DNS1 129 /* Primary DNS value */
+#define CI_MS_WINS1 130 /* Primary WINS value */
+#define CI_MS_DNS2 131 /* Secondary DNS value */
+#define CI_MS_WINS2 132 /* Secondary WINS value */
+
+static const value_string ipcp_opt_vals[] = {
+ {CI_ADDRS, "IP Addresses" },
+ {CI_COMPRESSTYPE,"Compression Type" },
+ {CI_ADDR, "Address" },
+ {CI_MS_DNS1, "Primary DNS value" },
+ {CI_MS_WINS1, "Primary WINS value" },
+ {CI_MS_DNS2, "Secondary DNS value" },
+ {CI_MS_WINS2, "Secondary WINS value" },
+ {0, NULL } };
+
void
capture_ppp( const u_char *pd, guint32 cap_len, packet_counts *ld ) {
switch (pntohs(&pd[2])) {
@@ -80,6 +190,131 @@ capture_ppp( const u_char *pd, guint32 cap_len, packet_counts *ld ) {
}
void
+dissect_ipcp( const u_char *pd, int offset, frame_data *fd, proto_tree *tree ) {
+ proto_tree *fh_tree;
+ proto_item *ti;
+
+ int ipcpcode;
+ int ipcpid;
+ int optionslength;
+
+ ipcpcode = pd[0+offset];
+ ipcpid = pd[1+offset];
+ optionslength= pntohs(&pd[2+offset]);
+
+ if(check_col(fd, COL_INFO))
+ col_add_fstr(fd, COL_INFO, "IPCP %s",
+ val_to_str(ipcpcode, cp_vals, "Unknown"));
+
+ if(tree) {
+ ti = proto_tree_add_item(tree, 0+offset, 4, "IP Control Protocol" );
+ fh_tree = proto_tree_new();
+ proto_item_add_subtree(ti, fh_tree, ETT_IPCP);
+ proto_tree_add_item(fh_tree, 0+offset, 1, "Code: %s (0x%02x)",
+ val_to_str(ipcpcode, cp_vals, "Unknown"), ipcpcode);
+ proto_tree_add_item(fh_tree, 1+offset, 1, "Identifier: 0x%02x",
+ ipcpid);
+ proto_tree_add_item(fh_tree, 2+offset, 2, "Length: %d",
+ optionslength);
+ }
+
+ switch (ipcpcode) {
+ /* decode lcp options here. */
+ default:
+ dissect_data(pd, 4+offset, fd, tree);
+ break;
+ }
+}
+
+void
+dissect_lcp( const u_char *pd, int offset, frame_data *fd, proto_tree *tree ) {
+ proto_tree *fh_tree;
+ proto_item *ti;
+
+ int lcpcode;
+ int lcpid;
+ int optionslength;
+
+ lcpcode = pd[0+offset];
+ lcpid = pd[1+offset];
+ optionslength= pntohs(&pd[2+offset]);
+
+ if(check_col(fd, COL_INFO))
+ col_add_fstr(fd, COL_INFO, "LCP %s",
+ val_to_str(lcpcode, lcp_vals, "Unknown"));
+
+ if(tree) {
+ ti = proto_tree_add_item(tree, 0+offset, 4, "Link Control Protocol" );
+ fh_tree = proto_tree_new();
+ proto_item_add_subtree(ti, fh_tree, ETT_LCP);
+ proto_tree_add_item(fh_tree, 0+offset, 1, "Code: %s (0x%02x)",
+ val_to_str(lcpcode, lcp_vals, "Unknown"), lcpcode);
+ proto_tree_add_item(fh_tree, 1+offset, 1, "Identifier: 0x%02x",
+ lcpid);
+ proto_tree_add_item(fh_tree, 2+offset, 2, "Length: %d",
+ optionslength);
+ }
+
+ switch (lcpcode) {
+ /* decode lcp options here. */
+ default:
+ dissect_data(pd, 4+offset, fd, tree);
+ break;
+ }
+}
+
+void
+dissect_payload_ppp( const u_char *pd, int offset, frame_data *fd, proto_tree *tree ) {
+ e_ppphdr ph;
+ proto_tree *fh_tree;
+ proto_item *ti;
+
+/* ph.ppp_addr = pd[0+offset]; */
+/* ph.ppp_ctl = pd[1+offset]; */
+ ph.ppp_prot = pntohs(&pd[0+offset]);
+
+ /* populate a tree in the second pane with the status of the link
+ layer (ie none) */
+ if(tree) {
+ ti = proto_tree_add_item(tree, 0+offset, 2, "Point-to-Point Protocol" );
+ fh_tree = proto_tree_new();
+ proto_item_add_subtree(ti, fh_tree, ETT_PPP);
+ proto_tree_add_item(fh_tree, 0+offset, 2, "Protocol: %s (0x%04x)",
+ val_to_str(ph.ppp_prot, ppp_vals, "Unknown"), ph.ppp_prot);
+ }
+
+ switch (ph.ppp_prot) {
+ case PPP_IP:
+ dissect_ip(pd, 2+offset, fd, tree);
+ break;
+ case PPP_AT:
+ dissect_ddp(pd, 2+offset, fd, tree);
+ break;
+ case PPP_IPX:
+ dissect_ipx(pd, 2+offset, fd, tree);
+ break;
+ case PPP_VINES:
+ dissect_vines(pd, 2+offset, fd, tree);
+ break;
+ case PPP_IPV6:
+ dissect_ipv6(pd, 2+offset, fd, tree);
+ break;
+ case PPP_LCP:
+ dissect_lcp(pd, 2+offset, fd, tree);
+ break;
+ case PPP_IPCP:
+ dissect_ipcp(pd, 2+offset, fd, tree);
+ break;
+ default:
+ dissect_data(pd, 2+offset, fd, tree);
+ if (check_col(fd, COL_INFO))
+ col_add_fstr(fd, COL_INFO, "PPP %s (0x%04x)",
+ val_to_str(ph.ppp_prot, ppp_vals, "Unknown"), ph.ppp_prot);
+ break;
+ }
+}
+
+void
dissect_ppp( const u_char *pd, frame_data *fd, proto_tree *tree ) {
e_ppphdr ph;
proto_tree *fh_tree;
@@ -99,14 +334,15 @@ dissect_ppp( const u_char *pd, frame_data *fd, proto_tree *tree ) {
/* load the top pane info. This should be overwritten by
the next protocol in the stack */
- if(check_col(fd, COL_RES_DL_SRC))
- col_add_str(fd, COL_RES_DL_SRC, "N/A" );
- if(check_col(fd, COL_RES_DL_DST))
- col_add_str(fd, COL_RES_DL_DST, "N/A" );
- if(check_col(fd, COL_PROTOCOL))
- col_add_str(fd, COL_PROTOCOL, "N/A" );
- if(check_col(fd, COL_INFO))
- col_add_str(fd, COL_INFO, "PPP" );
+
+ if(check_col(fd, COL_RES_DL_SRC))
+ col_add_str(fd, COL_RES_DL_SRC, "N/A" );
+ if(check_col(fd, COL_RES_DL_DST))
+ col_add_str(fd, COL_RES_DL_DST, "N/A" );
+ if(check_col(fd, COL_PROTOCOL))
+ col_add_str(fd, COL_PROTOCOL, "N/A" );
+ if(check_col(fd, COL_INFO))
+ col_add_str(fd, COL_INFO, "PPP" );
/* populate a tree in the second pane with the status of the link
layer (ie none) */
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-24 23:25:18 +0000