Adds dumping for ATT's Find Info Request and Response. Also adds a simple
name resolving for GATT common uuids (listed on Assigned Numbers).
---
parser/att.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 113 insertions(+), 3 deletions(-)
diff --git a/parser/att.c b/parser/att.c
index 3717839..d8a10fc 100644
--- a/parser/att.c
+++ b/parser/att.c
@@ -36,6 +36,27 @@
#include "parser.h"
+#define GATT_PRIM_SVC_UUID 0x2800
+#define GATT_SND_SVC_UUID 0x2801
+#define GATT_INCLUDE_UUID 0x2802
+#define GATT_CHARAC_UUID 0x2803
+
+#define GATT_CHARAC_DEVICE_NAME 0x2A00
+#define GATT_CHARAC_APPEARANCE 0x2A01
+#define GATT_CHARAC_PERIPHERAL_PRIV_FLAG 0x2A02
+#define GATT_CHARAC_RECONNECTION_ADDRESS 0x2A03
+#define GATT_CHARAC_PERIPHERAL_PREF_CONN 0x2A04
+#define GATT_CHARAC_SERVICE_CHANGED 0x2A05
+
+#define GATT_CHARAC_EXT_PROPER_UUID 0x2900
+#define GATT_CHARAC_USER_DESC_UUID 0x2901
+#define GATT_CLIENT_CHARAC_CFG_UUID 0x2902
+#define GATT_SERVER_CHARAC_CFG_UUID 0x2903
+#define GATT_CHARAC_FMT_UUID 0x2904
+#define GATT_CHARAC_AGREG_FMT_UUID 0x2905
+
+
+
/* Attribute Protocol Opcodes */
#define ATT_OP_ERROR 0x01
#define ATT_OP_MTU_REQ 0x02
@@ -196,6 +217,46 @@ static const char * atterror2str(uint8_t err)
}
}
+static const char *uuid2str(uint16_t uuid)
+{
+ switch (uuid) {
+ case GATT_PRIM_SVC_UUID:
+ return "GATT Primary Service";
+ case GATT_SND_SVC_UUID:
+ return "GATT Secondary Service";
+ case GATT_INCLUDE_UUID:
+ return "GATT Include";
+ case GATT_CHARAC_UUID:
+ return "GATT Characteristic";
+ case GATT_CHARAC_DEVICE_NAME:
+ return "GATT(type) Device Name";
+ case GATT_CHARAC_APPEARANCE:
+ return "GATT(type) Appearance";
+ case GATT_CHARAC_PERIPHERAL_PRIV_FLAG:
+ return "GATT(type) Peripheral Privacy Flag";
+ case GATT_CHARAC_RECONNECTION_ADDRESS:
+ return "GATT(type) Characteristic Reconnection Address";
+ case GATT_CHARAC_PERIPHERAL_PREF_CONN:
+ return "GATT(type) Characteristic Preferred Connection Parameters";
+ case GATT_CHARAC_SERVICE_CHANGED:
+ return "GATT(type) Characteristic Service Changed";
+ case GATT_CHARAC_EXT_PROPER_UUID:
+ return "GATT(desc) Characteristic Extended Properties";
+ case GATT_CHARAC_USER_DESC_UUID:
+ return "GATT(desc) User Description";
+ case GATT_CLIENT_CHARAC_CFG_UUID:
+ return "GATT(desc) Client Characteristic Configuration";
+ case GATT_SERVER_CHARAC_CFG_UUID:
+ return "GATT(desc) Server Characteristic Configuration";
+ case GATT_CHARAC_FMT_UUID:
+ return "GATT(desc) Format";
+ case GATT_CHARAC_AGREG_FMT_UUID:
+ return "GATT(desc) Aggregate Format";
+ default:
+ return "Unknown";
+ }
+}
+
static void att_error_dump(int level, struct frame *frm)
{
uint8_t op = get_u8(frm);
@@ -203,10 +264,10 @@ static void att_error_dump(int level, struct frame *frm)
uint8_t err = get_u8(frm);
p_indent(level, frm);
- printf("Error: %s 0x%.2x\n", atterror2str(err), err);
+ printf("Error: %s (%d)\n", atterror2str(err), err);
p_indent(level, frm);
- printf("opcode %d (%s) on handle 0x%2.2x\n", op, attop2str(op), handle);
+ printf("%s (0x%.2x) on handle 0x%2.2x\n", attop2str(op), op, handle);
}
static void att_mtu_req_dump(int level, struct frame *frm)
@@ -225,6 +286,50 @@ static void att_mtu_resp_dump(int level, struct frame *frm)
printf("server rx mtu %d\n", server_rx_mtu);
}
+static void att_find_info_req_dump(int level, struct frame *frm)
+{
+ uint16_t start = btohs(htons(get_u16(frm)));
+ uint16_t end = btohs(htons(get_u16(frm)));
+
+ p_indent(level, frm);
+ printf("start 0x%2.2x, end 0x%2.2x\n", start, end);
+}
+
+static void att_find_info_resp_dump(int level, struct frame *frm)
+{
+ uint8_t fmt = get_u8(frm);
+
+ p_indent(level, frm);
+
+ if (fmt == 0x01) {
+ printf("format: uuid-16\n");
+
+ while (frm->len > 0) {
+ uint16_t handle = btohs(htons(get_u16(frm)));
+ uint16_t uuid = btohs(htons(get_u16(frm)));
+ p_indent(level + 1, frm);
+ printf("handle 0x%2.2x, uuid 0x%2.2x (%s)\n", handle, uuid,
+ uuid2str(uuid));
+ }
+ } else {
+ printf("format: uuid-128\n");
+
+ while (frm->len > 0) {
+ uint16_t handle = btohs(htons(get_u16(frm)));
+ int i;
+
+ p_indent(level + 1, frm);
+ printf("handle 0x%2.2x, uuid ", handle);
+ for (i = 0; i < 16; i++) {
+ printf("%02x", get_u8(frm));
+ if (i == 3 || i == 5 || i == 7 || i == 9)
+ printf("-");
+ }
+ printf("\n");
+ }
+ }
+}
+
static void att_handle_notify_dump(int level, struct frame *frm)
{
uint16_t handle = btohs(htons(get_u16(frm)));
@@ -259,10 +364,15 @@ void att_dump(int level, struct frame *frm)
case ATT_OP_MTU_RESP:
att_mtu_resp_dump(level + 1, frm);
break;
+ case ATT_OP_FIND_INFO_REQ:
+ att_find_info_req_dump(level + 1, frm);
+ break;
+ case ATT_OP_FIND_INFO_RESP:
+ att_find_info_resp_dump(level + 1, frm);
+ break;
case ATT_OP_HANDLE_NOTIFY:
att_handle_notify_dump(level + 1, frm);
break;
-
default:
raw_dump(level, frm);
break;
--
1.7.1
--
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