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/* Chrysalide - Outil d'analyse de fichiers binaires
* helpers.c - assistanat dans la manipulation des paquets GDB
*
* Copyright (C) 2010 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* OpenIDA 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.
*
* OpenIDA 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include "helpers.h"
#include <regex.h>
#include <string.h>
/* -------------------------- PAQUETS DES REPONSES D'ARRET -------------------------- */
/******************************************************************************
* *
* Paramètres : packet = paquet de deonnées à interpréter. *
* sig = identifiant du signal source. [OUT] *
* addr = adresse de l'instruction courante. [OUT] *
* thread = identifiant du thread concerné. [OUT] *
* endian = boutisme de la plateforme ciblée. *
* *
* Description : Récupère les informations liées à un arrêt suite à signal. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : Les données sont la forme : *
* T0505:00000000;04:a08de6bf;08:505878b7;thread:50dc; *
* *
******************************************************************************/
bool get_stop_reply_sig_info(const GGdbPacket *packet, int *sig, vmpa_t *addr, pid_t *thread, SourceEndian endian)
{
const char *data; /* Données brutes du paquet */
size_t length; /* Quantité de ces données */
uint8_t index; /* Indice de 8 bits quelconque */
size_t pos; /* Tête de lecture courante */
regex_t preg; /* Expression régulière */
int ret; /* Bilan d'un appel */
regmatch_t pmatch[3]; /* Zones remarquées */
size_t key_len; /* Taille de l'indicatif */
*addr = 0ull;
g_gdb_packet_get_data(packet, &data, &length, NULL);
pos = 1;
/* Lecture du numéro du signal */
if (!strtou8(&index, data, &pos, length, SRE_LITTLE))
return false;
*sig = index;
/* Reste des informations */
ret = regcomp(&preg, "([^:]+):([^;]+);", REG_EXTENDED | REG_ICASE);
if (ret != 0) return false;
for (ret = regexec(&preg, &data[pos], 3, pmatch, 0);
ret != REG_NOMATCH;
ret = regexec(&preg, &data[pos], 3, pmatch, 0))
{
key_len = pmatch[1].rm_eo - pmatch[1].rm_so;
/* Indication sur le thread */
if (key_len == strlen("thread")
&& strncmp(&data[pos + pmatch[1].rm_so], "thread", key_len) == 0)
{
/* TODO printf("Thread found !\n"); */
}
/* Valeur de registre ? */
else if (key_len == 2)
{
if (!strtou8(&index, data, (size_t []) { pos + pmatch[1].rm_so }, length, SRE_LITTLE))
return false;
if (index != 8 /* FIXME */)
goto next_field;
if (!strtou32(addr, data, (size_t []) { pos + pmatch[2].rm_so }, length, SRE_LITTLE/* FIXME */))
return false;
}
next_field:
pos += pmatch[0].rm_eo;
}
regfree(&preg);
return (*addr != 0ull);
}
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