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/* Chrysalide - Outil d'analyse de fichiers binaires
* debugger.c - débogage d'une cible en Java.
*
* Copyright (C) 2010-2017 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Chrysalide is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Chrysalide. If not, see <http://www.gnu.org/licenses/>.
*/
#include "debugger.h"
#include <malloc.h>
#include <string.h>
#include <i18n.h>
#include "packet.h"
#include "tcp.h"
#include "../debugger-int.h"
#include "../stream.h"
#include "../../core/logs.h"
/* Débogueur utilisant un serveur JAVA (instance) */
struct _GJavaDebugger
{
GBinaryDebugger parent; /* A laisser en premier */
GDebugStream *stream;
};
/* Débogueur utilisant un serveur JAVA (classe) */
struct _GJavaDebuggerClass
{
GBinaryDebuggerClass parent; /* A laisser en premier */
};
/* Initialise la classe du débogueur utilisant Java. */
static void g_java_debugger_class_init(GJavaDebuggerClass *);
/* Procède à l'initialisation du débogueur utilisant Java. */
static void g_java_debugger_init(GJavaDebugger *);
/* Procède au démarrage effectif de la session de débogage. */
static bool g_java_debugger_attach(GJavaDebugger *);
/* Fournit les identifiants de tous les threads actifs. */
static pid_t *g_java_debugger_list_all_threads(GJavaDebugger *, char ***, size_t *);
/* Fournit la liste des frames courantes d'un thread donné. */
static dbg_frame_t *g_java_debugger_get_frames_stack(GJavaDebugger *, pid_t, size_t *);
/* Indique le type défini par la GLib pour le débogueur java. */
G_DEFINE_TYPE(GJavaDebugger, g_java_debugger, G_TYPE_BINARY_DEBUGGER);
/******************************************************************************
* *
* Paramètres : klass = classe de débogueur à initialiser. *
* *
* Description : Initialise la classe du débogueur utilisant Java. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_java_debugger_class_init(GJavaDebuggerClass *klass)
{
}
/******************************************************************************
* *
* Paramètres : debugger = instance de débogueur à préparer. *
* *
* Description : Procède à l'initialisation du débogueur utilisant Java. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_java_debugger_init(GJavaDebugger *debugger)
{
GBinaryDebugger *parent; /* Instance parente */
parent = G_BINARY_DEBUGGER(debugger);
parent->attach = (attach_debugger_fc)g_java_debugger_attach;
parent->all_threads = (dbg_list_all_threads_fc)g_java_debugger_list_all_threads;
parent->frames_stack = (dbg_get_frames_stack_fc)g_java_debugger_get_frames_stack;
#if 0
parent->run = (basic_debugger_fc)g_java_debugger_run;
parent->resume = (resume_debugger_fc)g_java_debugger_resume;
parent->kill = (basic_debugger_fc)g_java_debugger_kill;
#endif
}
/******************************************************************************
* *
* Paramètres : binary = binaire représenter à déboguer. *
* options = paramètres destinés au débogage. *
* *
* Description : Crée un débogueur utilisant un serveur Java distant. *
* *
* Retour : Instance de débogueur mise en place ou NULL. *
* *
* Remarques : - *
* *
******************************************************************************/
GBinaryDebugger *g_java_debugger_new(GLoadedBinary *binary, void *options)
{
GBinaryDebugger *result; /* Débogueur à retourner */
result = g_object_new(G_TYPE_JAVA_DEBUGGER, NULL);
G_JAVA_DEBUGGER(result)->stream = g_jdwp_tcp_client_new("localhost", "9000");
return result;
}
/******************************************************************************
* *
* Paramètres : debugger = instance du module de débogage chargé. *
* *
* Description : Procède au démarrage effectif de la session de débogage. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static bool g_java_debugger_attach(GJavaDebugger *debugger)
{
bool result; /* Bilan à retourner */
GDebugPacket *req; /* Requête à formuler */
GDebugPacket *ret; /* Obtention de la réponse */
jdwp_payload *payload; /* Charge utile d'une réponse */
req = NULL;
ret = NULL;
/* Connexion physique */
result = g_debug_stream_connect(debugger->stream);
if (!result) goto gjda_error;
result = false;
/* Demande de version */
req = g_debug_stream_get_free_packet(debugger->stream);
g_jdwp_packet_set_request_header(G_JDWP_PACKET(req),
JDWP_CST_VIRTUAL_MACHINE, JDWP_CMD_VM_VERSION);
if (!g_debug_stream_send_packet(debugger->stream, req))
goto gjda_req_error;
ret = g_debug_stream_recv_packet(debugger->stream,
(filter_packet_fc)g_jdwp_packet_is_reply, req);
if (!ret) goto gjda_req_error;
if (!g_jdwp_packet_parse_payload(G_JDWP_PACKET(ret),
JDWP_CST_VIRTUAL_MACHINE, JDWP_CMD_VM_VERSION))
goto gjda_ret_error;
payload = g_jdwp_packet_get_payload(G_JDWP_PACKET(ret));
log_variadic_message(LMT_INFO, _("The debugger is '%s' (JRE %d.%d; VM %s)."),
payload->vs_reply.description.value,
payload->vs_reply.jdwp_major, payload->vs_reply.jdwp_minor,
payload->vs_reply.vm_version.value);
g_debug_stream_mark_packet_as_free(debugger->stream, req);
g_debug_stream_mark_packet_as_free(debugger->stream, ret);
/* Récupération des tailles d'identifiants */
req = g_debug_stream_get_free_packet(debugger->stream);
g_jdwp_packet_set_request_header(G_JDWP_PACKET(req),
JDWP_CST_VIRTUAL_MACHINE, JDWP_CMD_VM_ID_SIZES);
if (!g_debug_stream_send_packet(debugger->stream, req))
goto gjda_req_error;
ret = g_debug_stream_recv_packet(debugger->stream,
(filter_packet_fc)g_jdwp_packet_is_reply, req);
if (!ret) goto gjda_req_error;
if (!g_jdwp_packet_parse_payload(G_JDWP_PACKET(ret),
JDWP_CST_VIRTUAL_MACHINE, JDWP_CMD_VM_ID_SIZES))
goto gjda_ret_error;
payload = g_jdwp_packet_get_payload(G_JDWP_PACKET(ret));
g_jdwp_packet_set_sizes(G_JDWP_PACKET(ret), &payload->sz_reply);
result = true;
gjda_ret_error:
g_debug_stream_mark_packet_as_free(debugger->stream, ret);
gjda_req_error:
g_debug_stream_mark_packet_as_free(debugger->stream, req);
gjda_error:
return result;
}
/******************************************************************************
* *
* Paramètres : debugger = instance du module de débogage chargé. *
* names = désignations de tous les threads ou NULL. [OUT] *
* count = nombre de threads actifs. [OUT] *
* *
* Description : Fournit les identifiants de tous les threads actifs. *
* *
* Retour : Liste des threads décomptés. *
* *
* Remarques : - *
* *
******************************************************************************/
static pid_t *g_java_debugger_list_all_threads(GJavaDebugger *debugger, char ***names, size_t *count)
{
pid_t *result; /* Bilan à retourner */
GDebugPacket *req; /* Requête à formuler */
GDebugPacket *ret; /* Obtention de la réponse */
jdwp_payload *payload; /* Charge utile d'une réponse */
size_t i; /* Boucle de parcours */
GDebugPacket *sub_req; /* Requête à formuler */
jdwp_cmd_thread_name_request ident; /* Indentification d'un thread */
GDebugPacket *sub_ret; /* Obtention de la réponse */
jdwp_payload *sub_payload; /* Charge utile d'une réponse */
result = NULL;
*count = 0;
req = g_debug_stream_get_free_packet(debugger->stream);
g_jdwp_packet_set_request_header(G_JDWP_PACKET(req),
JDWP_CST_VIRTUAL_MACHINE, JDWP_CMD_VM_ALL_THREADS);
if (!g_debug_stream_send_packet(debugger->stream, req))
goto gjdlat_req_error;
ret = g_debug_stream_recv_packet(debugger->stream,
(filter_packet_fc)g_jdwp_packet_is_reply, req);
if (!ret) goto gjdlat_req_error;
if (!g_jdwp_packet_parse_payload(G_JDWP_PACKET(ret),
JDWP_CST_VIRTUAL_MACHINE, JDWP_CMD_VM_ALL_THREADS))
goto gjdlat_ret_error;
payload = g_jdwp_packet_get_payload(G_JDWP_PACKET(ret));
*count = payload->th_reply.count;
result = (pid_t *)calloc(*count, sizeof(pid_t));
if (names != NULL)
*names = (char **)calloc(*count, sizeof(char *));
for (i = 0; i < *count; i++)
{
result[i] = (pid_t)payload->th_reply.threads[i];
if (names != NULL)
{
sub_req = g_debug_stream_get_free_packet(debugger->stream);
g_jdwp_packet_set_request_header(G_JDWP_PACKET(sub_req),
JDWP_CST_THREAD_REFERENCE, JDWP_CMD_THREAD_NAME);
ident.id = result[i];
g_jdwp_packet_set_payload(G_JDWP_PACKET(sub_req), (jdwp_payload *)&ident);
if (!g_debug_stream_send_packet(debugger->stream, sub_req))
{
g_debug_stream_mark_packet_as_free(debugger->stream, sub_req);
(*names)[i] = strdup("???");
continue;
}
sub_ret = g_debug_stream_recv_packet(debugger->stream,
(filter_packet_fc)g_jdwp_packet_is_reply, sub_req);
if (!sub_ret)
{
g_debug_stream_mark_packet_as_free(debugger->stream, sub_req);
(*names)[i] = strdup("???");
continue;
}
if (!g_jdwp_packet_parse_payload(G_JDWP_PACKET(sub_ret),
JDWP_CST_THREAD_REFERENCE, JDWP_CMD_THREAD_NAME))
{
g_debug_stream_mark_packet_as_free(debugger->stream, sub_req);
g_debug_stream_mark_packet_as_free(debugger->stream, sub_ret);
(*names)[i] = strdup("???");
continue;
}
sub_payload = g_jdwp_packet_get_payload(G_JDWP_PACKET(sub_ret));
(*names)[i] = strdup(sub_payload->th_name.name.value);
g_debug_stream_mark_packet_as_free(debugger->stream, sub_req);
g_debug_stream_mark_packet_as_free(debugger->stream, sub_ret);
}
}
gjdlat_ret_error:
g_debug_stream_mark_packet_as_free(debugger->stream, ret);
gjdlat_req_error:
g_debug_stream_mark_packet_as_free(debugger->stream, req);
return result;
}
/******************************************************************************
* *
* Paramètres : debugger = instance du module de débogage chargé. *
* thread = thread concerné par l'analyse. *
* count = nombre de frames en place. [OUT] *
* *
* Description : Fournit la liste des frames courantes d'un thread donné. *
* *
* Retour : Liste des frames trouvées. *
* *
* Remarques : - *
* *
******************************************************************************/
static dbg_frame_t *g_java_debugger_get_frames_stack(GJavaDebugger *debugger, pid_t thread, size_t *count)
{
dbg_frame_t *result; /* Bilan à retourner */
GDebugPacket *req; /* Requête à formuler */
jdwp_cmd_thread_frames_request frames; /* Ciblage du thread désiré */
GDebugPacket *ret; /* Obtention de la réponse */
jdwp_payload *payload; /* Charge utile d'une réponse */
size_t i; /* Boucle de parcours */
result = NULL;
*count = 0;
req = g_debug_stream_get_free_packet(debugger->stream);
g_jdwp_packet_set_request_header(G_JDWP_PACKET(req),
JDWP_CST_THREAD_REFERENCE, JDWP_CMD_THREAD_FRAMES);
frames.id = thread;
frames.start = 0;
frames.length = ALL_FRAMES;
g_jdwp_packet_set_payload(G_JDWP_PACKET(req), (jdwp_payload *)&frames);
if (!g_debug_stream_send_packet(debugger->stream, req))
goto gjdgsf_req_error;
ret = g_debug_stream_recv_packet(debugger->stream,
(filter_packet_fc)g_jdwp_packet_is_reply, req);
if (!ret) goto gjdgsf_req_error;
if (!g_jdwp_packet_parse_payload(G_JDWP_PACKET(ret),
JDWP_CST_THREAD_REFERENCE, JDWP_CMD_THREAD_FRAMES))
goto gjdgsf_ret_error;
payload = g_jdwp_packet_get_payload(G_JDWP_PACKET(ret));
*count = payload->th_frames.count;
result = (dbg_frame_t *)calloc(*count, sizeof(dbg_frame_t));
for (i = 0; i < *count; i++)
{
/* TODO */
result[i].addr = payload->th_frames.frames[i].location.index;
}
gjdgsf_ret_error:
g_debug_stream_mark_packet_as_free(debugger->stream, ret);
gjdgsf_req_error:
g_debug_stream_mark_packet_as_free(debugger->stream, req);
return result;
}
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