/**
* Handle a player ban request.
*
* @param data the request packet
* @param len the length of data
* @param cli_addr the address of the sender
* @param cli_len the length of cli_addr
*/
void *c_req_ban(char *data, unsigned int len, struct player *pl)
{
uint32_t ban_id;
struct player *target;
char *reason, *ptr;
uint16_t duration;
struct server *s = pl->in_chan->in_server;
ptr = data + 24;
ban_id = ru32(&ptr);
duration = ru16(&ptr);
target = get_player_by_public_id(s, ban_id);
if (target != NULL) {
send_acknowledge(pl); /* ACK */
if(player_has_privilege(pl, SP_ADM_BAN_IP, target->in_chan)) {
reason = rstaticstring(29, &ptr);
add_ban(s, new_ban(0, target->cli_addr->sin_addr, reason));
logger(LOG_INFO, "Reason for banning player %s : %s", target->name, reason);
s_notify_ban(pl, target, duration, reason);
remove_player(s, target);
free(reason);
}
}
return NULL;
}
/**
* Handles a server kick request.
*
* @param data the request packet
* @param len the length of data
* @param cli_addr the address of the sender
* @param cli_len the length of cli_addr
*/
void *c_req_kick_server(char *data, unsigned int len, struct player *pl)
{
uint32_t target_id;
char *reason, *ptr;
struct player *target;
struct server *s = pl->in_chan->in_server;
if (len != 60) {
logger(LOG_WARN, "c_req_kick_server, packet has invalid size : %i instead of %i.", len, 60);
return NULL;
}
ptr = data + 24;
target_id = ru32(&ptr);
target = get_player_by_public_id(s, target_id);
if (target != NULL) {
send_acknowledge(pl); /* ACK */
if(player_has_privilege(pl, SP_OTHER_SV_KICK, target->in_chan)) {
ptr = data + 28;
reason = rstaticstring(29, &ptr);
logger(LOG_INFO, "Reason for kicking player %s : %s", target->name, reason);
s_notify_kick_server(pl, target, reason);
remove_player(s, pl);
free(reason);
}
}
return NULL;
}
void extract_arc_files_main(void)
{
arcfile_files_extracted = 0;
arcfile_understood = 0;
arcfile_offs = 0; /* RESET */
uint32_t test0 = ru32();
if (test0 == 0x101F4667) {
mdie("this format not yet implemented");
} else {
const char pathStartSeq[5] = { 0, ':', 0, '\\', 0 };
const uint8_t *dp;
reset_parse:
if ((dp=memmem(arcfile_data+arcfile_offs,arcfile_size-arcfile_offs,
pathStartSeq, 5))) {
arcfile_offs = dp - (uint8_t*)arcfile_data;
arcfile_offs -= 2;
while (1) {
if (extract_arc_file_try()) {
if (arcfile_offs>=arcfile_size) {
break; /* End Of File */
} else {
goto reset_parse;
}
}
}
}
}
}
/**
* Handle a keepalive sent by the client
* - check the crc
* - send a keepalive back to the client
*
* @param data the connection packet
* @param len the length of the connection packet
* @param cli_addr the adress of the client
* @param cli_len the length of cli_addr
*/
void handle_player_keepalive(char *data, unsigned int len, struct server *s)
{
struct player *pl;
char *ptr = data;
uint32_t pub_id, priv_id, ka_id;
/* Check crc */
if(!packet_check_crc(data, len, 16))
return;
/* Retrieve the player */
ptr += 4;
priv_id = ru32(&ptr);
pub_id = ru32(&ptr);
ka_id = ru32(&ptr); /* Get the counter */
pl = get_player_by_ids(s, pub_id, priv_id);
if (pl == NULL) {
logger(LOG_WARN, "handle_player_keepalive : pl == NULL. Why????");
return;
}
/* Send the keepalive response */
s_resp_keepalive(pl, ka_id);
/* Update the last_ping field */
gettimeofday(&pl->last_ping, NULL);
}
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;
}
