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/* OpenIDA - Outil d'analyse de fichiers binaires
* layout.c - mise en place de graphique
*
* Copyright (C) 2009 Cyrille Bagard
*
* This file is part of OpenIDA.
*
* 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 "layout.h"
#include <malloc.h>
#include <string.h>
#include <gtk/gtkfixed.h>
#include "dot.h"
#include "node.h"
#include "../common/extstr.h"
/* Taille maximale des descriptions de liens */
#define LINKS_DESC_LEN 128
/* Etablit tous les liens entre les différents morceaux de code. */
static char *complete_graph_links(const GtkGraphView *, GtkBinView **, size_t, char *);
/******************************************************************************
* *
* Paramètres : view = support où placer les différents éléments. *
* views = morceaux de code à afficher de façon organisée. *
* count = quantité de ces morceaux de code. *
* *
* Description : Dispose une série de morceaux d'affichage en graphique. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
bool build_graph_view(GtkGraphView *view, GtkBinView **views, size_t count)
{
GGraphNode **nodes; /* Intermédiaires en place */
size_t i; /* Boucle de parcours */
char *cmds; /* Description à envoyer à dot */
graph_layout *layout; /* Graphique construit */
GtkLinkRenderer **links; /* Liens graphiques construits */
size_t links_count; /* Quantité de ces liens */
/* Création de la glue */
nodes = (GGraphNode **)calloc(count, sizeof(GGraphNode *));
for (i = 0; i < count; i++)
nodes[i] = g_graph_node_new(views[i]);
/* Définition du graphique */
cmds = strdup("digraph G {\noverlap=false;\n splines=true;\n");
//cmds = strdup("digraph G {\n");
for (i = 0; i < count; i++)
cmds = g_graph_node_register_for_dot(nodes[i], cmds);
cmds = complete_graph_links(view, views, count, cmds);
cmds = stradd(cmds, "}");
printf("first step :: '%s'\n", cmds);
layout = create_graph_layout(cmds);
/* Affichage du graphique */
place_nodes_of_graph_layout(layout, GTK_FIXED(view), nodes, count);
links = create_links_from_graph_layout(layout, &links_count);
gtk_graph_view_attach_links(view, links, links_count);
gtk_widget_queue_draw(GTK_WIDGET(view));
delete_graph_layout(layout);
/* TODO : free nodes */
return true;
}
/******************************************************************************
* *
* Paramètres : view = support contenant les différentes lignes. *
* views = morceaux de code à afficher de façon organisée. *
* count = quantité de ces morceaux de code. *
* desc = description du graphique à compléter. *
* *
* Description : Etablit tous les liens entre les différents morceaux de code.*
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static char *complete_graph_links(const GtkGraphView *view, GtkBinView **views, size_t count, char *desc)
{
size_t i; /* Boucle de parcours #1 */
GRenderingLine *last; /* Dernière ligne d'un bloc */
GRenderingLine *dest; /* Ligne visée par une autre */
InstructionLinkType type; /* Type de lien entre lignes */
bool link_next; /* Lien auto. avec la suivante */
vmpa_t addr; /* Addresse de destination */
size_t k; /* Boucle de parcours #2 */
char buffer[LINKS_DESC_LEN]; /* Tampon pour l'ajout de liens*/
for (i = 0; i < count; i++)
{
last = gtk_bin_view_get_last_line(views[i]);
if (g_rendering_line_has_destination(last))
{
link_next = false;
/* Premier saut : exigé par l'instruction */
dest = g_rendering_line_get_destination(last, &type);
addr = get_rendering_line_address(dest);
for (k = 0; k < count; k++)
if (gtk_bin_view_contain_address(views[k], addr))
break;
if (k < count)
switch (type)
{
case ILT_JUMP:
snprintf(buffer, LINKS_DESC_LEN, "_%p -> _%p;\n", views[i], views[k]);
desc = stradd(desc, buffer);
break;
case ILT_JUMP_IF_TRUE:
snprintf(buffer, LINKS_DESC_LEN, "_%p -> _%p;\n", views[i], views[k]);
desc = stradd(desc, buffer);
link_next = true;
break;
case ILT_JUMP_IF_FALSE:
snprintf(buffer, LINKS_DESC_LEN, "_%p -> _%p;\n", views[i], views[k]);
desc = stradd(desc, buffer);
link_next = true;
break;
default:
break;
}
/* Second saut : automatique selon l'instruction */
if (link_next)
{
dest = g_rendering_line_get_next_iter(gtk_bin_view_get_lines(GTK_BIN_VIEW(view)),
last,
gtk_bin_view_get_last_line(GTK_BIN_VIEW(view)));
if (dest == NULL) continue;
addr = get_rendering_line_address(dest);
for (k = 0; k < count; k++)
if (gtk_bin_view_contain_address(views[k], addr))
break;
if (k < count)
{
snprintf(buffer, LINKS_DESC_LEN, "_%p -> _%p;\n", views[i], views[k]);
desc = stradd(desc, buffer);
}
}
}
/* Si la ligne n'est pas la dernière, on suit le flux normal */
else if (last != gtk_bin_view_get_last_line(view))
{
dest = g_rendering_line_get_next_iter(gtk_bin_view_get_lines(GTK_BIN_VIEW(view)),
last,
gtk_bin_view_get_last_line(GTK_BIN_VIEW(view)));
if (dest == NULL) continue;
addr = get_rendering_line_address(dest);
for (k = 0; k < count; k++)
if (gtk_bin_view_contain_address(views[k], addr))
break;
if (k < count)
{
snprintf(buffer, LINKS_DESC_LEN, "_%p -> _%p;\n", views[i], views[k]);
desc = stradd(desc, buffer);
}
}
}
return desc;
}
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