/**
* Send a keepalive back to the client to confirm we have received his
*
* @param s the server
* @param pl the player to send this to
* @param ka_id the counter of the keepalived we received
*/
static void s_resp_keepalive(struct player *pl, uint32_t ka_id)
{
char *data, *ptr;
int data_size = 24;
data = (char *)calloc(data_size, sizeof(char));
if (data == NULL) {
logger(LOG_WARN, "s_resp_keepalive : calloc failed : %s.", strerror(errno));
return;
}
ptr = data;
wu32(0x0002bef4, &ptr); /* Function field */
wu32(pl->private_id, &ptr); /* Private ID */
wu32(pl->public_id, &ptr); /* Public ID */
wu32(pl->f4_s_counter, &ptr); /* Packet counter */
/* Checksum initialize at the end */ ptr += 4;
wu32(ka_id, &ptr); /* ID of the keepalive to confirm */
/* check we filled the whole packet */
assert((ptr - data) == data_size);
/* Add CRC */
packet_add_crc(data, 24, 16);
sendto(pl->in_chan->in_server->socket_desc, data, 24, 0, (struct sockaddr *)pl->cli_addr, pl->cli_len);
pl->f4_s_counter++;
free(data);
}
/**
* Send the list of bans to a player
*
* @param s the server
* @param pl the player who asked for the list of bans
*/
static void s_resp_bans(struct player *pl)
{
char *data, *ptr;
int data_size, tmp_size;
struct ban *b;
struct server *s = pl->in_chan->in_server;
size_t iter;
data_size = 24;
data_size += 4; /* number of bans */
ar_each(struct ban *, b, iter, s->bans)
data_size += ban_to_data_size(b);
ar_end_each;
data = (char *)calloc(data_size, sizeof(char));
if (data == NULL) {
logger(LOG_WARN, "s_resp_ban, packet allocation failed : %s.", strerror(errno));
return;
}
ptr = data;
wu16(PKT_TYPE_CTL, &ptr); /* */
wu16(CTL_BANLIST, &ptr); /* */
wu32(pl->private_id, &ptr); /* private ID */
wu32(pl->public_id, &ptr); /* public ID */
wu32(pl->f0_s_counter, &ptr); /* packet counter */
ptr += 4; /* packet version */
ptr += 4; /* checksum */
wu32(s->bans->used_slots, &ptr);/* number of bans */
logger(LOG_INFO, "number of bans : %zu", s->bans->used_slots);
ar_each(struct ban *, b, iter, s->bans)
tmp_size = ban_to_data(b, ptr);
ptr += tmp_size;
ar_end_each;
packet_add_crc_d(data, data_size);
logger(LOG_INFO, "list of bans : sending %i bytes", data_size);
send_to(s, data, data_size, 0, pl);
pl->f0_s_counter++;
free(data);
}
/**
* Send a "player kicked" notification to all players.
*
* @param s the server
* @param kicker the player who kicked
* @param kicked the player kicked from the server
* @param reason the reason the player was kicked
*/
static void s_notify_kick_server(struct player *kicker, struct player *kicked, char *reason)
{
char *data, *ptr;
struct player *tmp_pl;
int data_size = 64;
struct server *s = kicker->in_chan->in_server;
size_t iter;
data = (char *)calloc(data_size, sizeof(char));
if (data == NULL) {
logger(LOG_WARN, "s_notify_kick_server, packet allocation failed : %s.", strerror(errno));
return;
}
ptr = data;
wu16(PKT_TYPE_CTL, &ptr); /* */
wu16(CTL_PLAYERLEFT, &ptr); /* */
ptr += 4; /* private ID */
ptr += 4; /* public ID */
ptr += 4; /* packet counter */
ptr += 4; /* packet version */
ptr += 4; /* empty checksum */
wu32(kicked->public_id, &ptr); /* ID of player who left */
wu16(2, &ptr); /* visible notification : kicked */
wu32(kicker->public_id, &ptr); /* kicker ID */
wstaticstring(reason, 29, &ptr);
/* check we filled all the packet */
assert((ptr - data) == data_size);
ar_each(struct player *, tmp_pl, iter, s->players)
ptr = data + 4;
wu32(tmp_pl->private_id, &ptr);
wu32(tmp_pl->public_id, &ptr);
wu32(tmp_pl->f0_s_counter, &ptr);
packet_add_crc_d(data, data_size);
send_to(s, data, data_size, 0, tmp_pl);
tmp_pl->f0_s_counter++;
ar_end_each;
free(data);
}
/**
* Send a packet to the player, indicating that his connection
* was accepted.
*
* @param pl the player we send this packet to
*/
static void server_accept_connection(struct player *pl)
{
char *data, *ptr;
int data_size = 436;
struct server *s = pl->in_chan->in_server;
data = (char *)calloc(data_size, sizeof(char));
if (data == NULL) {
logger(LOG_WARN, "server_accept_connection : calloc failed : %s.", strerror(errno));
return;
}
ptr = data;
wu32(0x0004bef4, &ptr); /* Function field */
wu32(pl->private_id, &ptr); /* Private ID */
wu32(pl->public_id, &ptr); /* Public ID */
wu32(pl->f4_s_counter, &ptr); /* Packet counter */
ptr += 4; /* Checksum initialize at the end */
wstaticstring(s->server_name, 29, &ptr);/* Server name */
wstaticstring(s->machine, 29, &ptr); /* Server machine */
/* Server version */
wu16(2, &ptr); /* Server version (major 1) */
wu16(0, &ptr); /* Server version (major 2) */
wu16(20, &ptr); /* Server version (minor 1) */
wu16(1, &ptr); /* Server version (minor 2) */
wu32(1, &ptr); /* Error code (1 = OK, 2 = Server Offline */
wu16(0x1FEF, &ptr); /* supported codecs (1<<codec | 1<<codec2 ...) */
ptr += 7;
/* 0 = SA, 1 = CA, 2 = Op, 3 = Voice, 4 = Reg, 5 = Anonymous */
sp_to_bitfield(s->privileges, ptr);
/* garbage data */
ptr += 71;
wu32(pl->private_id, &ptr); /* Private ID */
wu32(pl->public_id, &ptr); /* Public ID */
wstaticstring(s->welcome_msg, 255, &ptr); /* Welcome message */
/* check we filled the whole packet */
assert((ptr - data) == data_size);
/* Add CRC */
packet_add_crc(data, 436, 16);
/* Send packet */
/*send_to(pl->in_chan->in_server, data, 436, 0, pl);*/
sendto(pl->in_chan->in_server->socket_desc, data, 436, 0, (struct sockaddr *)pl->cli_addr, pl->cli_len);
pl->f4_s_counter++;
free(data);
}
/**
* Refuse a connection from a player because he has been banned.
*
* @param cli_addr the address of the player
* @param cli_len the length of cli_addr
*/
static void server_refuse_connection_ban(struct sockaddr_in *cli_addr, int cli_len, struct server *s)
{
char *data, *ptr;
int data_size = 436;
data = (char *)calloc(data_size, sizeof(char));
if (data == NULL) {
logger(LOG_WARN, "server_refuse_connection : calloc failed : %s.", strerror(errno));
return;
}
ptr = data;
wu32(0x0004bef4, &ptr); /* Function field */
/* *(uint32_t *)ptr = pl->private_id;*/ ptr += 4; /* Private ID */
wu32(5, &ptr); /* Public ID */
wu32(2, &ptr); /* Packet counter */
/* Checksum initialize at the end */ ptr += 4;
/* *ptr = 14;*/ ptr += 1; /* Length of server name */
/* memcpy(ptr, "Nom du serveur", 14);*/ ptr += 29; /* Server name */
/* *ptr = 18;*/ ptr += 1; /* Length of server machine */
/* memcpy(ptr, "Machine du serveur", 18);*/ ptr += 29; /* Server machine */
/* Server version */
/* *(uint16_t *)ptr = 2;*/ ptr += 2; /* Server version (major 1) */
/* *(uint16_t *)ptr = 0;*/ ptr += 2; /* Server version (major 2) */
/* *(uint16_t *)ptr = 20;*/ ptr += 2; /* Server version (minor 1) */
/* *(uint16_t *)ptr = 1;*/ ptr += 2; /* Server version (minor 2) */
wu32(0xFFFFFFFA, &ptr); /* Error code (1 = OK, 2 = Server Offline, 0xFFFFFFFA = Banned */
/* rights */ ptr += 80;
wu32(0x00584430, &ptr); /* Private ID */
wu32(5, &ptr); /* Public ID */
/* *ptr = 26;*/ ptr += 1; /* Length of welcome message */
/* memcpy(ptr, "Bienvenue sur mon serveur.", 26);*/ ptr += 255; /* Welcome message */
/* check we filled the whole packet */
assert((ptr - data) == data_size);
/* Add CRC */
packet_add_crc(data, 436, 16);
/* Send packet */
sendto(s->socket_desc, data, 436, 0, (struct sockaddr *)cli_addr, cli_len);
free(data);
}
extern "C" int zehn_load(NUC_FILE *file, void **mem_ptr, int (**entry)(int,char*[]), bool *supports_hww)
{
Zehn_header header;
// The Zehn file may not begin at the file start
size_t file_start = nuc_ftell(file);
if(nuc_fread(&header, sizeof(header), 1, file) != 1)
return 1;
if(header.signature != ZEHN_SIGNATURE || header.version != ZEHN_VERSION || header.file_size > header.alloc_size)
{
puts("[Zehn] This Zehn file is not supported!");
return 1;
}
Storage<Zehn_reloc> relocs(header.reloc_count);
Storage<Zehn_flag> flags(header.flag_count);
Storage<uint8_t> extra_data(header.extra_size);
if(nuc_fread(reinterpret_cast<void*>(relocs.data), sizeof(Zehn_reloc), header.reloc_count, file) != header.reloc_count
|| nuc_fread(reinterpret_cast<void*>(flags.data), sizeof(Zehn_flag), header.flag_count, file) != header.flag_count
|| nuc_fread(reinterpret_cast<void*>(extra_data.data), 1, header.extra_size, file) != header.extra_size)
{
puts("[Zehn] File read failed!");
return 1;
}
size_t remaining_mem = header.alloc_size - nuc_ftell(file) + file_start, remaining_file = header.file_size - nuc_ftell(file) + file_start;
if(emu_debug_alloc_ptr)
{
if(emu_debug_alloc_size < remaining_mem)
{
puts("[Zehn] emu_debug_alloc_size too small!");
*mem_ptr = malloc(remaining_mem);
}
else
*mem_ptr = emu_debug_alloc_ptr;
}
else
*mem_ptr = malloc(remaining_mem);
uint8_t *base = reinterpret_cast<uint8_t*>(*mem_ptr);
if(!base)
{
puts("[Zehn] Memory allocation failed!");
return 1;
}
if(relocs.data[0].type == Zehn_reloc_type::FILE_COMPRESSED)
{
if(relocs.data[0].offset != static_cast<int>(Zehn_compress_type::ZLIB))
{
puts("[Zehn] Compression format not supported!");
return 1;
}
Storage<uint8_t> compressed(remaining_file);
if(nuc_fread(compressed.data, remaining_file, 1, file) != 1)
{
puts("[Zehn] File read failed!");
return 1;
}
uLongf dest_len = remaining_mem;
if(uncompress(base, &dest_len, compressed.data, remaining_file) != Z_OK)
{
puts("[Zehn] Decompression failed!");
return 1;
}
std::fill(base + dest_len, base + remaining_mem, 0);
}
else
{
if(nuc_fread(base, remaining_file, 1, file) != 1)
{
puts("[Zehn] File read failed!");
return 1;
}
// Fill rest with zeros (.bss and other NOBITS sections)
std::fill(base + remaining_file, base + remaining_mem, 0);
}
const char *application_name = "(unknown)", *application_author = "(unknown)", *application_notice = "(no notice)";
unsigned int application_version = 1, ndless_version_min = 0, ndless_version_max = UINT_MAX,
ndless_revision_min = 0, ndless_revision_max = UINT_MAX;
// Iterate through each flag
for(Zehn_flag &f : flags)
{
const char *ptr;
switch(f.type)
{
case Zehn_flag_type::EXECUTABLE_NAME:
if(!zehn_check_string(extra_data.begin(), f, 255, &application_name))
{
puts("[Zehn] Invalid application name!");
return 1;
}
break;
case Zehn_flag_type::EXECUTABLE_NOTICE:
if(zehn_check_string(extra_data.begin(), f, 1024, &ptr))
application_notice = ptr;
break;
case Zehn_flag_type::EXECUTABLE_AUTHOR:
if(zehn_check_string(extra_data.begin(), f, 128, &ptr))
application_author = ptr;
break;
case Zehn_flag_type::EXECUTABLE_VERSION:
application_version = f.data;
break;
case Zehn_flag_type::NDLESS_VERSION_MIN:
ndless_version_min = f.data;
break;
case Zehn_flag_type::NDLESS_REVISION_MIN:
ndless_revision_min = f.data;
break;
case Zehn_flag_type::NDLESS_VERSION_MAX:
ndless_version_max = f.data;
break;
case Zehn_flag_type::NDLESS_REVISION_MAX:
ndless_revision_max = f.data;
break;
case Zehn_flag_type::RUNS_ON_COLOR:
if(f.data == false && has_colors)
{
msgbox("Error", "The application %s doesn't support CX and CM calculators!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_CLICKPAD:
if(f.data == false && !is_touchpad)
{
msgbox("Error", "The application %s doesn't support clickpads!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_TOUCHPAD:
if(f.data == false && is_touchpad)
{
msgbox("Error", "The application %s doesn't support touchpads!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_32MB:
if(f.data == false && (!has_colors || is_cm))
{
msgbox("Error", "The application %s requires more than 32MB of RAM!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_HWW:
*supports_hww = f.data;
break;
default:
break;
}
}
// Show some information about the executable
if(isKeyPressed(KEY_NSPIRE_CAT))
{
char info[1536];
sprintf(info, "Name: %s Version: %u\nAuthor: %s\nNotice: %s", application_name, application_version, application_author, application_notice);
show_msgbox("Information about the executable", info);
return 2;
}
if(NDLESS_VERSION < ndless_version_min || (NDLESS_VERSION == ndless_version_min && NDLESS_REVISION < ndless_revision_min))
{
msgbox("Error", "The application %s requires at least ndless %d.%d.%d!", application_name, ndless_version_min / 10, ndless_version_min % 10, ndless_revision_min);
return 2;
}
if(NDLESS_VERSION > ndless_version_max || (NDLESS_VERSION == ndless_version_max && NDLESS_REVISION > ndless_revision_max))
{
if(ndless_revision_max != UINT_MAX)
msgbox("Error", "The application %s requires ndless %d.%d.%d or older!", application_name, ndless_version_max / 10, ndless_version_max % 10, ndless_revision_max);
else
msgbox("Error", "The application %s requires ndless %d.%d or older!", application_name, ndless_version_max / 10, ndless_version_max % 10);
return 2;
}
// Iterate through the reloc table
for(Zehn_reloc &r : relocs)
{
if(r.offset >= remaining_mem)
{
puts("[Zehn] Wrong reloc in Zehn file!");
return 1;
}
// No alignment guaranteed!
uint32_t *place = reinterpret_cast<uint32_t*>(base + r.offset);
switch(r.type)
{
//Handled above
case Zehn_reloc_type::FILE_COMPRESSED:
break;
case Zehn_reloc_type::UNALIGNED_RELOC:
if(r.offset != 0)
{
printf("[Zehn] Unexpected UNALIGNED_RELOC value %lu!\n", r.offset);
return 1;
}
break;
case Zehn_reloc_type::ADD_BASE:
wu32(place, ru32(place) + reinterpret_cast<uint32_t>(base));
break;
case Zehn_reloc_type::ADD_BASE_GOT:
{
uint32_t u32;
while((u32 = ru32(place)) != 0xFFFFFFFF)
wu32(place++, u32 + reinterpret_cast<uint32_t>(base));
break;
}
case Zehn_reloc_type::SET_ZERO:
wu32(place, 0);
break;
default:
printf("[Zehn] Unsupported reloc %d!\n", static_cast<int>(r.type));
return 1;
}
}
*entry = reinterpret_cast<int (*)(int,char*[])>(base + header.entry_offset);
return 0;
}
