gumby israel
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d9370d195a
commit
992734c9eb
3 changed files with 93 additions and 4 deletions
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@ -16,6 +16,8 @@
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uint64_t htonll(uint64_t);
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uint64_t ntohll(uint64_t);
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uint64_t unpack_bytes(const uint8_t*, uint8_t);
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#define SPAWN_UNDEF 0
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#define SPAWN_CLIENT 1
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#define SPAWN_SERVER 2
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62
src/packet.c
62
src/packet.c
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@ -3,6 +3,8 @@
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typedef struct packet_ctx_t packet_ctx_t;
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struct packet_ctx_t {
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uint8_t iter_start;
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uint32_t iter_length;
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uint8_t region_count;
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uint16_t *region_lengths;
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uint32_t length;
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@ -12,12 +14,19 @@ struct {
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uint8_t count;
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packet_ctx_t *c2s;
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packet_ctx_t *s2c;
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packet_ctx_t *in;
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packet_ctx_t *out;
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} static ctx;
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void packet_context_init(uint8_t count) {
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ctx.count = count;
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ctx.c2s = (packet_ctx_t*)malloc(count * sizeof(packet_ctx_t));
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ctx.s2c = (packet_ctx_t*)malloc(count * sizeof(packet_ctx_t));
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uint8_t spawn_type = get_spawn_type();
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ctx.in = spawn_type == SPAWN_CLIENT ? ctx.s2c : ctx.c2s;
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ctx.out = spawn_type == SPAWN_CLIENT ? ctx.c2s : ctx.s2c;
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}
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void packet_context_register(uint8_t direction, uint8_t id, uint8_t iter_pt, uint8_t count, ...) {
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@ -53,4 +62,57 @@ void packet_context_free() {
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for(i = 0; i < ctx.count; ++i)
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free(ctx.s2c[i].region_lengths);
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free(ctx.s2c);
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}
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static void packet_fill_regions(packet_t *packet) {
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uint8_t *ptr = packet->raw;
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int i;
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packet->regions = (uint8_t**)malloc(packet->region_count * sizeof(uint8_t*));
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for(i = 0; i < packet->region_count; ++i) {
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packet->regions // TOD Ofisnibh THIS
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}
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packet_t* packet_init_in(uint8_t *raw) {
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if(raw[0] != 0xDE || raw[1] != 0xAD)
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return NULL;
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if(raw[2] > ctx.count)
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return NULL;
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packet_ctx_t *in = &(ctx.in[raw[2]]);
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packet_t *packet = (packet_t*)malloc(sizeof(packet_t));
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packet->id = raw[2];
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packet->raw = raw;
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packet->length = ntohl(*((uint32_t*)raw[3]));
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packet->region_lengths = in->region_lengths;
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packet->iterator = 0;
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packet->next_append = 0xFFFF;
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packet_fill_regions(packet);
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return packet;
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}
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packet_t* packet_init_out(uint8_t id, uint16_t iterations) {
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if(id > ctx.count)
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return NULL;
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packet_ctx_t *out = &(ctx.out[id]);
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int regions = out->region_count;
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int iterable_regions = out->region_count - out->iter_start - 1;
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if(out->iter_start != 0)
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regions = out->iter_start + (iterations * iterable_regions);
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packet_t *packet = (packet_t*)malloc(sizeof(packet_t));
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packet->id = id;
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packet->iterator = 0xFFFF;
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packet->next_append = 0;
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packet->region_count = regions;
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packet->region_lengths = out->region_lengths;
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packet->length = (length - iter_length) + iter_length * iterations;
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packet->raw = (uint8_t*)malloc(packet->length * sizeof(uint8_t));
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packet_fill_regions(packet);
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return packet;
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}
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33
src/packet.h
33
src/packet.h
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@ -17,11 +17,13 @@
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typedef struct packet_t packet_t;
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struct packet_t {
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uint8_t id;
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uint32_t length;
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uint8_t *raw;
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uint8_t **regions;
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const uint16_t *region_lengths;
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uint8_t region_count;
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uint8_t iterator;
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uint32_t length;
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uint16_t region_count;
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uint16_t iterator;
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uint16_t next_append;
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};
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void packet_context_init(uint8_t);
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@ -29,9 +31,32 @@ void packet_context_register(uint8_t, uint8_t, uint8_t, uint8_t, ...);
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void packet_context_free();
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packet_t* packet_init_in(uint8_t*);
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packet_t* packet_init_out(uint8_t);
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packet_t* packet_init_out(uint8_t, uint16_t);
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uint8_t* packet_get (packet_t*, uint8_t, int*);
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uint8_t packet_get_uint8 (packet_t*, uint8_t);
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uint16_t packet_get_uint16 (packet_t*, uint8_t);
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uint32_t packet_get_uint32 (packet_t*, uint8_t);
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uint64_t packet_get_uint64 (packet_t*, uint8_t);
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uint8_t* packet_get_raw (packet_t*, int*);
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uint8_t* packet_iter_get (packet_t*, int*);
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uint8_t packet_iter_get_uint8 (packet_t*);
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uint16_t packet_iter_get_uint16 (packet_t*);
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uint32_t packet_iter_get_uint32 (packet_t*);
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uint64_t packet_iter_get_uint64 (packet_t*);
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void packet_append (uint8_t*, int);
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void packet_append_string (uint8_t*, int);
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void packet_append_uint8 (uint8_t);
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void packet_append_uint16 (uint16_t);
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void packet_append_uint32 (uint32_t);
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void packet_append_uint64 (uint64_t);
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uint16_t packet_region_length (uint8_t, uint8_t);
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uint32_t packet_pre_iter_length (uint8_t);
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uint32_t packet_iter_length (uint8_t);
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BOOL packet_is_length_valid (uint8_t, uint32_t);
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void packet_free(packet_t*);
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