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Prevent invalid memory access under failure conditions

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This commit is contained in:
kwolekr 2014-10-28 00:18:53 -04:00
parent 6ddf458504
commit bc28ca0636
3 changed files with 64 additions and 61 deletions
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75
src/script/lua_api/l_mapgen.cpp
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@ -142,7 +142,8 @@ int ModApiMapgen::l_get_mapgen_object(lua_State *L)
// emerged max pos
push_v3s16(L, vm->m_area.MaxEdge);
return 3; }
return 3;
}
case MGOBJ_HEIGHTMAP: {
if (!mg->heightmap)
return 0;
@ -153,7 +154,8 @@ int ModApiMapgen::l_get_mapgen_object(lua_State *L)
lua_rawseti(L, -2, i + 1);
}
return 1; }
return 1;
}
case MGOBJ_BIOMEMAP: {
if (!mg->biomemap)
return 0;
@ -164,7 +166,8 @@ int ModApiMapgen::l_get_mapgen_object(lua_State *L)
lua_rawseti(L, -2, i + 1);
}
return 1; }
return 1;
}
case MGOBJ_HEATMAP: { // Mapgen V7 specific objects
case MGOBJ_HUMIDMAP:
if (strcmp(emerge->params.mg_name.c_str(), "v7"))
@ -183,7 +186,8 @@ int ModApiMapgen::l_get_mapgen_object(lua_State *L)
lua_rawseti(L, -2, i + 1);
}
return 1; }
return 1;
}
case MGOBJ_GENNOTIFY: {
lua_newtable(L);
for (int i = 0; flagdesc_gennotify[i].name; i++) {
@ -204,7 +208,8 @@ int ModApiMapgen::l_get_mapgen_object(lua_State *L)
posvec->clear();
}
return 1; }
return 1;
}
}
return 0;
@ -302,15 +307,26 @@ int ModApiMapgen::l_register_biome(lua_State *L)
NodeResolver *resolver = getServer(L)->getNodeDefManager()->getResolver();
BiomeDefManager *bmgr = getServer(L)->getEmergeManager()->biomedef;
if (!bmgr) {
verbosestream << "register_biome: BiomeDefManager not active" << std::endl;
return 0;
}
enum BiomeTerrainType terrain = (BiomeTerrainType)getenumfield(L, index,
"terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
Biome *b = bmgr->createBiome(terrain);
b->name = getstringfield_default(L, index, "name", "<no name>");
b->depth_top = getintfield_default(L, index, "depth_top", 1);
b->depth_filler = getintfield_default(L, index, "depth_filler", 3);
b->height_min = getintfield_default(L, index, "height_min", 0);
b->height_max = getintfield_default(L, index, "height_max", 0);
b->heat_point = getfloatfield_default(L, index, "heat_point", 0.);
b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.);
b->flags = 0; //reserved
if (!bmgr->addBiome(b)) {
delete b;
return 0;
}
// Pend node resolutions only if insertion succeeded
resolver->addNode(getstringfield_default(L, index, "node_top", ""),
"mapgen_dirt_with_grass", CONTENT_AIR, &b->c_top);
resolver->addNode(getstringfield_default(L, index, "node_filler", ""),
@ -322,17 +338,7 @@ int ModApiMapgen::l_register_biome(lua_State *L)
resolver->addNode(getstringfield_default(L, index, "node_dust_water", ""),
"mapgen_water_source", CONTENT_IGNORE, &b->c_dust_water);
b->name = getstringfield_default(L, index, "name", "<no name>");
b->depth_top = getintfield_default(L, index, "depth_top", 1);
b->depth_filler = getintfield_default(L, index, "depth_filler", 3);
b->height_min = getintfield_default(L, index, "height_min", 0);
b->height_max = getintfield_default(L, index, "height_max", 0);
b->heat_point = getfloatfield_default(L, index, "heat_point", 0.);
b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.);
b->flags = 0; //reserved
verbosestream << "register_biome: " << b->name << std::endl;
bmgr->addBiome(b);
return 0;
}
@ -496,9 +502,6 @@ int ModApiMapgen::l_register_ore(lua_State *L)
return 0;
}
resolver->addNode(getstringfield_default(L, index, "ore", ""),
"", CONTENT_AIR, &ore->c_ore);
ore->ore_param2 = (u8)getintfield_default(L, index, "ore_param2", 0);
ore->clust_scarcity = getintfield_default(L, index, "clust_scarcity", 1);
ore->clust_num_ores = getintfield_default(L, index, "clust_num_ores", 1);
@ -506,19 +509,8 @@ int ModApiMapgen::l_register_ore(lua_State *L)
ore->height_min = getintfield_default(L, index, "height_min", 0);
ore->height_max = getintfield_default(L, index, "height_max", 0);
ore->nthresh = getfloatfield_default(L, index, "noise_threshhold", 0.);
ore->noise = NULL;
ore->flags = 0;
getflagsfield(L, index, "flags", flagdesc_ore, &ore->flags, NULL);
std::vector<const char *> wherein_names;
getstringlistfield(L, index, "wherein", wherein_names);
for (size_t i = 0; i != wherein_names.size(); i++)
resolver->addNodeList(wherein_names[i], &ore->c_wherein);
lua_getfield(L, index, "noise_params");
ore->np = read_noiseparams(L, -1);
lua_pop(L, 1);
ore->noise = NULL;
if (ore->clust_scarcity <= 0 || ore->clust_num_ores <= 0) {
errorstream << "register_ore: clust_scarcity and clust_num_ores"
@ -527,6 +519,20 @@ int ModApiMapgen::l_register_ore(lua_State *L)
return 0;
}
getflagsfield(L, index, "flags", flagdesc_ore, &ore->flags, NULL);
lua_getfield(L, index, "noise_params");
ore->np = read_noiseparams(L, -1);
lua_pop(L, 1);
std::vector<const char *> wherein_names;
getstringlistfield(L, index, "wherein", wherein_names);
for (size_t i = 0; i != wherein_names.size(); i++)
resolver->addNodeList(wherein_names[i], &ore->c_wherein);
resolver->addNode(getstringfield_default(L, index, "ore", ""),
"", CONTENT_AIR, &ore->c_ore);
emerge->ores.push_back(ore);
//verbosestream << "register_ore: ore '" << ore->ore_name
@ -595,7 +601,6 @@ int ModApiMapgen::l_create_schematic(lua_State *L)
return 1;
}
// place_schematic(p, schematic, rotation, replacement)
int ModApiMapgen::l_place_schematic(lua_State *L)
{