mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-22 09:41:54 +00:00
Flock: converted also container socket parser but now it looks like failing
This commit is contained in:
Maria Matejka
parent
dc29cefb44
commit
b2e6530488
@ -940,114 +940,36 @@ hypervisor_container_shutdown(sock *s, const char *name)
|
||||
birdloop_leave(hcf.loop);
|
||||
}
|
||||
|
||||
struct cbor_parser_context {
|
||||
linpool *lp;
|
||||
|
||||
PACKED enum {
|
||||
CPE_TYPE = 0,
|
||||
CPE_READ_INT,
|
||||
CPE_COMPLETE_INT,
|
||||
CPE_READ_BYTE,
|
||||
} partial_state, partial_next;
|
||||
|
||||
byte type;
|
||||
u64 value;
|
||||
u64 partial_countdown;
|
||||
struct ccs_parser_context {
|
||||
struct cbor_parser_context *ctx;
|
||||
|
||||
u64 bytes_consumed;
|
||||
|
||||
byte *target_buf;
|
||||
uint target_len;
|
||||
|
||||
u64 major_state;
|
||||
|
||||
const char *error;
|
||||
|
||||
#define LOCAL_STACK_MAX_DEPTH 3
|
||||
u64 stack_countdown[LOCAL_STACK_MAX_DEPTH];
|
||||
uint stack_pos;
|
||||
};
|
||||
|
||||
#define CBOR_PARSER_ERROR bug
|
||||
|
||||
#define CBOR_PARSER_READ_INT(next) do { \
|
||||
ctx->partial_state = CPE_READ_INT; \
|
||||
ctx->partial_countdown = (1 << (ctx->value - 24)); \
|
||||
ctx->value = 0; \
|
||||
ctx->partial_next = next; \
|
||||
} while (0)
|
||||
|
||||
static struct cbor_parser_context ctx_, *ctx = &ctx_;
|
||||
static struct ccs_parser_context ccx_, *ccx = &ccx_;
|
||||
|
||||
static void
|
||||
hcf_parse(byte *buf, int size)
|
||||
{
|
||||
ASSERT_DIE(size > 0);
|
||||
struct cbor_parser_context *ctx = ccx->ctx;
|
||||
|
||||
for (int pos = 0; pos < size; pos++)
|
||||
{
|
||||
const byte bp = buf[pos];
|
||||
bool value_is_special = 0;
|
||||
bool exit_stack = false;
|
||||
|
||||
switch (ctx->partial_state)
|
||||
switch (cbor_parse_byte(ctx, buf[pos]))
|
||||
{
|
||||
case CPE_TYPE:
|
||||
/* Split the byte to type and value */
|
||||
ctx->type = bp >> 5;
|
||||
ctx->value = bp & 0x1f;
|
||||
case CPR_ERROR:
|
||||
bug("CBOR parser failure: %s", ctx->error);
|
||||
|
||||
if (ctx->type == 7)
|
||||
{
|
||||
if (ctx->value < 20)
|
||||
CBOR_PARSER_ERROR("Unknown simple value %u", ctx->value);
|
||||
else if (ctx->value < 24)
|
||||
; /* false, true, null, undefined */
|
||||
else if (ctx->value < 28)
|
||||
{
|
||||
/* Need more data */
|
||||
CBOR_PARSER_READ_INT(CPE_COMPLETE_INT);
|
||||
break;
|
||||
}
|
||||
else if (ctx->value == 31)
|
||||
; /* break-stop */
|
||||
else
|
||||
CBOR_PARSER_ERROR("Unknown simple value %u", ctx->value);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (ctx->value < 24)
|
||||
; /* Immediate value, fall through */
|
||||
else if (ctx->value < 28)
|
||||
{
|
||||
/* Need more data */
|
||||
CBOR_PARSER_READ_INT(CPE_COMPLETE_INT);
|
||||
break;
|
||||
}
|
||||
else if ((ctx->value == 31) && (ctx->type >= 2) && (ctx->type <= 5))
|
||||
/* Indefinite length, fall through */
|
||||
value_is_special = 1;
|
||||
else
|
||||
CBOR_PARSER_ERROR("Garbled additional value %u for type %u", ctx->value, ctx->type);
|
||||
}
|
||||
/* fall through */
|
||||
|
||||
case CPE_READ_INT:
|
||||
if (ctx->partial_state == CPE_READ_INT)
|
||||
{
|
||||
/* Reading a network order integer */
|
||||
ctx->value <<= 8;
|
||||
ctx->value |= bp;
|
||||
if (--ctx->partial_countdown)
|
||||
break;
|
||||
}
|
||||
/* fall through */
|
||||
|
||||
case CPE_COMPLETE_INT:
|
||||
/* TODO: exception for 7-31 end of long thing */
|
||||
case CPR_MORE:
|
||||
continue;
|
||||
|
||||
case CPR_MAJOR:
|
||||
/* Check type acceptance */
|
||||
switch (ctx->major_state)
|
||||
switch (ccx->major_state)
|
||||
{
|
||||
case 0: /* toplevel */
|
||||
if (ctx->type != 5)
|
||||
@ -1055,7 +977,7 @@ hcf_parse(byte *buf, int size)
|
||||
|
||||
ccf = (struct container_config) {};
|
||||
|
||||
ctx->major_state = 1;
|
||||
ccx->major_state = 1;
|
||||
break;
|
||||
|
||||
case 1: /* inside toplevel mapping */
|
||||
@ -1065,14 +987,14 @@ hcf_parse(byte *buf, int size)
|
||||
if (ctx->value >= 3)
|
||||
CBOR_PARSER_ERROR("Mapping key too high, got %lu", ctx->value);
|
||||
|
||||
ctx->major_state = ctx->value + 2;
|
||||
ccx->major_state = ctx->value + 2;
|
||||
break;
|
||||
|
||||
case 2: /* machine hostname */
|
||||
if (ctx->type != 3)
|
||||
CBOR_PARSER_ERROR("Expected string, got %u", ctx->type);
|
||||
|
||||
if (value_is_special)
|
||||
if (ctx->tflags & CPT_VARLEN)
|
||||
CBOR_PARSER_ERROR("Variable length string not supported yet");
|
||||
|
||||
if (ccf.hostname)
|
||||
@ -1087,7 +1009,7 @@ hcf_parse(byte *buf, int size)
|
||||
if (ctx->type != 3)
|
||||
CBOR_PARSER_ERROR("Expected string, got %u", ctx->type);
|
||||
|
||||
if (value_is_special)
|
||||
if (ctx->tflags & CPT_VARLEN)
|
||||
CBOR_PARSER_ERROR("Variable length string not supported yet");
|
||||
|
||||
if (ccf.workdir)
|
||||
@ -1102,7 +1024,7 @@ hcf_parse(byte *buf, int size)
|
||||
if (ctx->type != 3)
|
||||
CBOR_PARSER_ERROR("Expected string, got %u", ctx->type);
|
||||
|
||||
if (value_is_special)
|
||||
if (ctx->tflags & CPT_VARLEN)
|
||||
CBOR_PARSER_ERROR("Variable length string not supported yet");
|
||||
|
||||
if (ccf.basedir)
|
||||
@ -1116,79 +1038,38 @@ hcf_parse(byte *buf, int size)
|
||||
default:
|
||||
bug("invalid parser state");
|
||||
}
|
||||
|
||||
/* Some types are completely parsed, some not yet */
|
||||
switch (ctx->type)
|
||||
{
|
||||
case 0:
|
||||
case 1:
|
||||
case 7:
|
||||
exit_stack = !--ctx->stack_countdown[ctx->stack_pos];
|
||||
ctx->partial_state = CPE_TYPE;
|
||||
break;
|
||||
|
||||
case 2:
|
||||
case 3:
|
||||
ctx->partial_state = CPE_READ_BYTE;
|
||||
ctx->partial_countdown = ctx->value;
|
||||
ctx->target_buf = ctx->target_buf ?: lp_allocu(
|
||||
ctx->lp, ctx->target_len = (ctx->target_len ?: ctx->value));
|
||||
break;
|
||||
|
||||
case 4:
|
||||
case 5:
|
||||
if (++ctx->stack_pos >= LOCAL_STACK_MAX_DEPTH)
|
||||
CBOR_PARSER_ERROR("Stack too deep");
|
||||
|
||||
/* set array/map size;
|
||||
* once for arrays, twice for maps;
|
||||
* ~0 for indefinite */
|
||||
ctx->stack_countdown[ctx->stack_pos] = value_is_special ? ~0ULL :
|
||||
(ctx->value * (ctx->type - 3));
|
||||
ctx->partial_state = CPE_TYPE;
|
||||
break;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
case CPE_READ_BYTE:
|
||||
*ctx->target_buf = bp;
|
||||
ctx->target_buf++;
|
||||
if (--ctx->target_len)
|
||||
break;
|
||||
|
||||
/* Read completely! */
|
||||
switch (ctx->major_state)
|
||||
case CPR_STR_END:
|
||||
/* Bytes read completely! */
|
||||
switch (ccx->major_state)
|
||||
{
|
||||
case 2:
|
||||
case 3:
|
||||
case 4:
|
||||
ctx->major_state = 1;
|
||||
ccx->major_state = 1;
|
||||
break;
|
||||
|
||||
default:
|
||||
bug("Unexpected state to end a (byte)string in");
|
||||
/* Code to run at the end of a (byte)string */
|
||||
}
|
||||
break;
|
||||
|
||||
ctx->target_buf = NULL;
|
||||
ctx->partial_state = CPE_TYPE;
|
||||
|
||||
exit_stack = !--ctx->stack_countdown[ctx->stack_pos];
|
||||
}
|
||||
|
||||
/* End of array or map */
|
||||
while (exit_stack)
|
||||
while (cbor_parse_block_end(ctx))
|
||||
{
|
||||
switch (ctx->major_state)
|
||||
switch (ccx->major_state)
|
||||
{
|
||||
/* Code to run at the end of the mapping */
|
||||
case 0: /* toplevel item ended */
|
||||
/* Reinit the parser */
|
||||
ctx->type = 0xff;
|
||||
ctx->major_state = 0;
|
||||
ccx->major_state = 0;
|
||||
ctx->stack_countdown[0] = 1;
|
||||
ctx->bytes_consumed = 0;
|
||||
ccx->bytes_consumed = 0;
|
||||
|
||||
if (size > pos + 1)
|
||||
hcf_parse(buf + pos + 1, size - pos - 1);
|
||||
@ -1206,20 +1087,16 @@ hcf_parse(byte *buf, int size)
|
||||
|
||||
container_start();
|
||||
|
||||
ctx->major_state = 0;
|
||||
ccx->major_state = 0;
|
||||
break;
|
||||
|
||||
default:
|
||||
bug("Unexpected state to end a mapping in");
|
||||
}
|
||||
|
||||
/* Check exit from the next item */
|
||||
ASSERT_DIE(ctx->stack_pos);
|
||||
exit_stack = !--ctx->stack_countdown[--ctx->stack_pos];
|
||||
}
|
||||
}
|
||||
|
||||
ctx->bytes_consumed += size;
|
||||
ccx->bytes_consumed += size;
|
||||
}
|
||||
|
||||
void
|
||||
@ -1269,9 +1146,7 @@ hypervisor_container_fork(void)
|
||||
this_thread_id |= 0xf000;
|
||||
|
||||
/* initialize the forker */
|
||||
ctx->lp = lp_new(&root_pool);
|
||||
ctx->type = 0xff;
|
||||
ctx->stack_countdown[0] = 1;
|
||||
ccx->ctx = cbor_parser_new(&root_pool, 2);
|
||||
|
||||
while (true)
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user