104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
#include <msgba/packet.h>
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#include <msgba/packet/hello.h>
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void
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msPacketHelloDestroy(struct msPacketHello **hello) {
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if ((*hello)->rom) {
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free((*hello)->rom);
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(*hello)->rom = NULL;
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}
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if ((*hello)->savestate) {
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free((*hello)->savestate);
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(*hello)->savestate = NULL;
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}
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free(*hello);
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*hello = NULL;
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}
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bool
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msPacketHelloHandle(const struct msPacket *packet, struct msPacketHello *hello,
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struct msClientConnectionData *const data) {
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bool result = false;
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if (data->coreController) {
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fprintf(stderr, "Attempt to send a second hello, aborting connection.\n");
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goto return_ms_packet_hello_handle;
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}
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printf("Loading game and save for client_fd %d\n", data->clientFd);
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data->coreController = msCoreControllerLoadGame(hello->rom, hello->size_rom, hello->savestate, hello->size_savestate);
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msCoreControllerThreadStart(data->coreController);
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result = true;
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return_ms_packet_hello_handle:
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msPacketHelloDestroy(&hello);
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return result;
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}
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bool
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msPacketHelloGet(const struct msPacket *packet, int client_fd,
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struct msClientConnectionData *const data) {
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bool result = false;
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struct msPacketHello *hello = NULL;
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unsigned char *rom = NULL;
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unsigned char *savestate = NULL;
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FILE *fp = fmemopen(packet->raw_data, packet->size, "r");
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if (!fp) {
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printf("Unable to fmemopen\n");
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goto return_get_packet_hello;
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}
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size_t size_rom = 0;
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size_t size_savestate = 0;
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size_t reads[4] = { 0,0,0,0 };
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size_t total_read = 0;
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size_t to_read_size;
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#define FREAD(target, size, count, fp, n, goto_to) \
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to_read_size = size; \
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reads[n] = fread(target, to_read_size, count, fp); \
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reads[n] *= size; \
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if (reads[n] == -1) { \
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printf("Unable to read %s\n", #target); \
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goto goto_to; \
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}
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FREAD(&size_rom, sizeof size_rom, 1, fp, 0, return_get_packet_hello);
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size_rom = be64toh(size_rom);
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rom = malloc(sizeof *rom * size_rom);
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FREAD(rom, sizeof *rom, size_rom, fp, 1, return_get_packet_hello);
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FREAD(&size_savestate, sizeof size_savestate, 1, fp, 2, return_get_packet_hello);
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size_savestate = be64toh(size_savestate);
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savestate = malloc(sizeof *savestate * size_savestate);
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FREAD(savestate, sizeof *savestate, size_savestate, fp, 3, return_get_packet_hello);
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fclose(fp);
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for (int i = 0; i<4; i++) {
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total_read += reads[i];
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}
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if (total_read != packet->size) {
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fprintf (stderr, "Total read (%lu) != packet->size (%lu)\n", total_read, packet->size);
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goto return_get_packet_hello;
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}
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hello = calloc(1, sizeof *hello);
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hello->size_rom = size_rom;
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hello->rom = rom;
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hello->size_savestate = size_savestate;
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hello->savestate = savestate;
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result = true;
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return_get_packet_hello:
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if (!result) {
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fprintf(stderr, "Unable to read the packet hello\n");
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if (rom) {
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free (rom);
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rom = NULL;
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}
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if (savestate) {
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free (savestate);
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savestate = NULL;
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}
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return result;
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}
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return msPacketHelloHandle(packet, hello, data);
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}
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