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#ifndef librabbitmq_amqp_private_h
#define librabbitmq_amqp_private_h
#ifdef __cplusplus
extern "C" {
#endif
#include <arpa/inet.h> /* ntohl, htonl, ntohs, htons */
/*
* Connection states:
*
* - CONNECTION_STATE_IDLE: initial state, and entered again after
* each frame is completed. Means that no bytes of the next frame
* have been seen yet. Connections may only be reconfigured, and the
* connection's pools recycled, when in this state. Whenever we're
* in this state, the inbound_buffer's bytes pointer must be NULL;
* any other state, and it must point to a block of memory allocated
* from the frame_pool.
*
* - CONNECTION_STATE_WAITING_FOR_HEADER: Some bytes of an incoming
* frame have been seen, but not a complete frame header's worth.
*
* - CONNECTION_STATE_WAITING_FOR_BODY: A complete frame header has
* been seen, but the frame is not yet complete. When it is
* completed, it will be returned, and the connection will return to
* IDLE state.
*
* - CONNECTION_STATE_WAITING_FOR_PROTOCOL_HEADER: The beginning of a
* protocol version header has been seen, but the full eight bytes
* hasn't yet been received. When it is completed, it will be
* returned, and the connection will return to IDLE state.
*
*/
typedef enum amqp_connection_state_enum_ {
CONNECTION_STATE_IDLE = 0,
CONNECTION_STATE_WAITING_FOR_HEADER,
CONNECTION_STATE_WAITING_FOR_BODY,
CONNECTION_STATE_WAITING_FOR_PROTOCOL_HEADER
} amqp_connection_state_enum;
/* 7 bytes up front, then payload, then 1 byte footer */
#define HEADER_SIZE 7
#define FOOTER_SIZE 1
typedef struct amqp_link_t_ {
struct amqp_link_t_ *next;
void *data;
} amqp_link_t;
struct amqp_connection_state_t_ {
amqp_pool_t frame_pool;
amqp_pool_t decoding_pool;
amqp_connection_state_enum state;
int channel_max;
int frame_max;
int heartbeat;
amqp_bytes_t inbound_buffer;
size_t inbound_offset;
size_t target_size;
amqp_bytes_t outbound_buffer;
int sockfd;
amqp_bytes_t sock_inbound_buffer;
size_t sock_inbound_offset;
size_t sock_inbound_limit;
amqp_link_t *first_queued_frame;
amqp_link_t *last_queued_frame;
};
#define CHECK_LIMIT(b, o, l, v) ({ if ((o + l) > (b).len) { return -EFAULT; } (v); })
#define BUF_AT(b, o) (&(((uint8_t *) (b).bytes)[o]))
#define D_8(b, o) CHECK_LIMIT(b, o, 1, * (uint8_t *) BUF_AT(b, o))
#define D_16(b, o) CHECK_LIMIT(b, o, 2, ({uint16_t v; memcpy(&v, BUF_AT(b, o), 2); ntohs(v);}))
#define D_32(b, o) CHECK_LIMIT(b, o, 4, ({uint32_t v; memcpy(&v, BUF_AT(b, o), 4); ntohl(v);}))
#define D_64(b, o) ({ \
uint64_t hi = D_32(b, o); \
uint64_t lo = D_32(b, o + 4); \
hi << 32 | lo; \
})
#define D_BYTES(b, o, l) CHECK_LIMIT(b, o, l, BUF_AT(b, o))
#define E_8(b, o, v) CHECK_LIMIT(b, o, 1, * (uint8_t *) BUF_AT(b, o) = (v))
#define E_16(b, o, v) CHECK_LIMIT(b, o, 2, ({uint16_t vv = htons(v); memcpy(BUF_AT(b, o), &vv, 2);}))
#define E_32(b, o, v) CHECK_LIMIT(b, o, 4, ({uint32_t vv = htonl(v); memcpy(BUF_AT(b, o), &vv, 4);}))
#define E_64(b, o, v) ({ \
E_32(b, o, (uint32_t) (((uint64_t) v) >> 32)); \
E_32(b, o + 4, (uint32_t) (((uint64_t) v) & 0xFFFFFFFF)); \
})
#define E_BYTES(b, o, l, v) CHECK_LIMIT(b, o, l, memcpy(BUF_AT(b, o), (v), (l)))
extern int amqp_decode_table(amqp_bytes_t encoded,
amqp_pool_t *pool,
amqp_table_t *output,
int *offsetptr);
extern int amqp_encode_table(amqp_bytes_t encoded,
amqp_table_t *input,
int *offsetptr);
#define amqp_assert(condition, ...) \
({ \
if (!(condition)) { \
fprintf(stderr, __VA_ARGS__); \
fputc('\n', stderr); \
abort(); \
} \
})
#define AMQP_CHECK_RESULT_CLEANUP(expr, stmts) \
({ \
int _result = (expr); \
if (_result < 0) { stmts; return _result; } \
_result; \
})
#define AMQP_CHECK_RESULT(expr) AMQP_CHECK_RESULT_CLEANUP(expr, )
#define AMQP_CHECK_EOF_RESULT(expr) \
({ \
int _result = (expr); \
if (_result <= 0) return _result; \
_result; \
})
#ifndef NDEBUG
extern void amqp_dump(void const *buffer, size_t len);
#else
#define amqp_dump(buffer, len) ((void) 0)
#endif
#ifdef __cplusplus
}
#endif
#endif
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