gumby israel

src/common.h

@@ -16,6 +16,8 @@
 uint64_t htonll(uint64_t);
 uint64_t ntohll(uint64_t);
 
+uint64_t unpack_bytes(const uint8_t*, uint8_t);
+
 #define SPAWN_UNDEF  0
 #define SPAWN_CLIENT 1
 #define SPAWN_SERVER 2

src/packet.c

@@ -3,6 +3,8 @@
 typedef struct packet_ctx_t packet_ctx_t;
 struct packet_ctx_t {
     uint8_t iter_start;
+    uint32_t iter_length;
+    
     uint8_t region_count;
     uint16_t *region_lengths;
     uint32_t length;
@@ -12,12 +14,19 @@ struct {
     uint8_t count;
     packet_ctx_t *c2s;
     packet_ctx_t *s2c;
+    
+    packet_ctx_t *in;
+    packet_ctx_t *out;
 } static ctx;
 
 void packet_context_init(uint8_t count) {
     ctx.count = count;
     ctx.c2s = (packet_ctx_t*)malloc(count * sizeof(packet_ctx_t));
     ctx.s2c = (packet_ctx_t*)malloc(count * sizeof(packet_ctx_t));
+    
+    uint8_t   spawn_type  = get_spawn_type();
+    ctx.in  = spawn_type == SPAWN_CLIENT ? ctx.s2c : ctx.c2s;
+    ctx.out = spawn_type == SPAWN_CLIENT ? ctx.c2s : ctx.s2c;
 }
 
 void packet_context_register(uint8_t direction, uint8_t id, uint8_t iter_pt, uint8_t count, ...) {
@@ -54,3 +63,56 @@ void packet_context_free() {
         free(ctx.s2c[i].region_lengths);
     free(ctx.s2c);
 }
+
+static void packet_fill_regions(packet_t *packet) {
+    uint8_t *ptr = packet->raw;
+    int i;
+    
+    packet->regions = (uint8_t**)malloc(packet->region_count * sizeof(uint8_t*));
+    for(i = 0; i < packet->region_count; ++i) {
+        packet->regions // TOD Ofisnibh THIS 
+}
+
+packet_t* packet_init_in(uint8_t *raw) {
+    if(raw[0] != 0xDE || raw[1] != 0xAD)
+        return NULL;
+    if(raw[2] > ctx.count)
+        return NULL;
+    
+    packet_ctx_t *in = &(ctx.in[raw[2]]);
+    
+    packet_t *packet = (packet_t*)malloc(sizeof(packet_t));
+    packet->id = raw[2];
+    packet->raw = raw;
+    packet->length = ntohl(*((uint32_t*)raw[3]));
+    packet->region_lengths = in->region_lengths;
+    packet->iterator = 0;
+    packet->next_append = 0xFFFF;
+    packet_fill_regions(packet);
+    
+    return packet;
+}
+
+packet_t* packet_init_out(uint8_t id, uint16_t iterations) {
+    if(id > ctx.count)
+        return NULL;
+    
+    packet_ctx_t *out = &(ctx.out[id]);
+    int regions = out->region_count;
+    int iterable_regions = out->region_count - out->iter_start - 1;
+    if(out->iter_start != 0)
+        regions = out->iter_start + (iterations * iterable_regions);
+    
+    packet_t *packet = (packet_t*)malloc(sizeof(packet_t));
+    
+    packet->id = id;
+    packet->iterator = 0xFFFF;
+    packet->next_append = 0;
+    packet->region_count = regions;
+    packet->region_lengths = out->region_lengths;
+    packet->length = (length - iter_length) + iter_length * iterations;
+    packet->raw = (uint8_t*)malloc(packet->length * sizeof(uint8_t));
+    packet_fill_regions(packet);
+    
+    return packet;
+}

src/packet.h

@@ -17,11 +17,13 @@
 typedef struct packet_t packet_t;
 struct packet_t {
     uint8_t id;
-    uint32_t length;
+    uint8_t *raw;
     uint8_t **regions;
     const uint16_t *region_lengths;
-    uint8_t region_count;
-    uint8_t iterator;
+    uint32_t length;
+    uint16_t region_count;
+    uint16_t iterator;
+    uint16_t next_append;
 };
 
 void packet_context_init(uint8_t);
@@ -29,9 +31,32 @@ void packet_context_register(uint8_t, uint8_t, uint8_t, uint8_t, ...);
 void packet_context_free();
 
 packet_t* packet_init_in(uint8_t*);
-packet_t* packet_init_out(uint8_t);
+packet_t* packet_init_out(uint8_t, uint16_t);
 
+uint8_t* packet_get        (packet_t*, uint8_t, int*);
+uint8_t  packet_get_uint8  (packet_t*, uint8_t);
+uint16_t packet_get_uint16 (packet_t*, uint8_t);
+uint32_t packet_get_uint32 (packet_t*, uint8_t);
+uint64_t packet_get_uint64 (packet_t*, uint8_t);
+uint8_t* packet_get_raw    (packet_t*, int*);
 
+uint8_t* packet_iter_get        (packet_t*, int*);
+uint8_t  packet_iter_get_uint8  (packet_t*);
+uint16_t packet_iter_get_uint16 (packet_t*);
+uint32_t packet_iter_get_uint32 (packet_t*);
+uint64_t packet_iter_get_uint64 (packet_t*);
+
+void packet_append        (uint8_t*, int);
+void packet_append_string (uint8_t*, int);
+void packet_append_uint8  (uint8_t);
+void packet_append_uint16 (uint16_t);
+void packet_append_uint32 (uint32_t);
+void packet_append_uint64 (uint64_t);
+
+uint16_t packet_region_length   (uint8_t, uint8_t);
+uint32_t packet_pre_iter_length (uint8_t);
+uint32_t packet_iter_length     (uint8_t);
+BOOL     packet_is_length_valid (uint8_t, uint32_t);
 
 void packet_free(packet_t*);