nx_wire_logger.nx source

1// nx_wire_logger.nx -- bits-up TCP wire logger. 2// 3// Replaces external packet capture tools (Wireshark, tcpdump) with a 4// native NishiLang primitive that interposes on send/recv at the TCP 5// fd boundary. Direction-labeled hex dumps go to a chosen log fd 6// (typically stderr=2 or a dedicated file). 7// 8// Substrate-honesty principle: any time we'd reach for Wireshark to 9// "see the bytes," we owe ourselves a native primitive. This is 10// that primitive. 11// 12// API: 13// nx_wire_send(fd, log_fd, label, label_len, buf, len) -> i64 14// Calls sys_write(fd, buf, len); if log_fd > 0, hex-dumps the 15// same bytes to log_fd with the label prefix. Returns sys_write 16// result (bytes written, or negative on error). 17// 18// nx_wire_recv(fd, log_fd, label, label_len, buf, max) -> i64 19// Calls sys_read(fd, buf, max); if log_fd > 0, hex-dumps the 20// first n bytes (n = read result) to log_fd. Returns sys_read 21// result. 22// 23// Per Cardinals 9, 22. Composes nx_hex_dump. 24// 25// license_tier: ORIGINAL 26// lineage_id: nishi_wire_logger_q10 27 28import "nx_syscalls.nx" 29import "nx_hex_dump.nx" 30 31func nx_wire_send(fd: i64, log_fd: i64, 32 label: *u8, label_len: i64, 33 buf: *u8, len: i64) -> i64 { 34 let rc: i64 = sys_write(fd, buf, len) 35 if log_fd > 0 { 36 if rc > 0 { 37 nx_hex_dump_to_fd(log_fd, label, label_len, buf, rc) 38 } 39 } 40 return rc 41} 42 43func nx_wire_recv(fd: i64, log_fd: i64, 44 label: *u8, label_len: i64, 45 buf: *u8, max: i64) -> i64 { 46 let rc: i64 = sys_read(fd, buf, max) 47 if log_fd > 0 { 48 if rc > 0 { 49 nx_hex_dump_to_fd(log_fd, label, label_len, buf, rc) 50 } 51 } 52 return rc 53} 54 55func main() -> i64 { 56 return 0 57}