code wiki / _hdl_build / nx_media_cover_gate.nx

nx_media_cover_gate.nx

buildroot/runtime/_hdl_build/nx_media_cover_gate.nx

4653 B75 linesdepth 3pulls 3 transitivereach 0 importersview sourcekind gate/prooftopic media

docs dependencies structs consts functions

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nx_media_cover_gate.nx -- gate /api/cover resolution: a book path -> its EMBEDDED cover image on disk, extracting on cache-miss (nx_media_cover_lib::mc_cover_resolve, the EXACT logic the live media server's /api/cover uses). Proves: a real MOBI carrying an EXTH-201 embedded cover resolves to a real image file (GIF magic, the fixture's embedded bytes); a path-traversal attempt is refused (-1); an unsupported/absent book yields a graceful miss (0). No generation, no download -- embedded only (operator: extract embedded, no internet). expect_exit: 0 license_tier: ORIGINAL

dependencies 2 imports · 0 importers

imports: nx_syscalls.nxnx_media_cover_lib.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

structs

none

consts

none

functions

10	func gp(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } called by 1: main calls 1: sys_write
11	func gnum(v0: i64) -> i64 { var v: i64=v0; if v<0 { sys_write(1,"-" as u8,1); v=0-v } let b: u8=sys_mmap(24); var k: i64=0; if v==0 {b[0]=48 as u8;k=1} while v>0 {b[k]=(48+(v%10)) as u8; v=v/10; k=k+1} let o: *u8=sys_mmap(24); var j: i64=0; while j<k {o[j]=b[k-1-j];j=j+1} sys_write(1,o,k); return 0 } called by 1: main calls 2: sys_write sys_mmap
12	func spawn(path: u8, a0: u8, a1: u8, redir: u8) -> i64 called by 1: main calls 7: sys_fork sys_openat_wr sys_dup3 sys_mmap sys_execve sys_exit+1
33	func main() -> i64 calls 9: gp spawn sys_mmap mc_cover_resolve mc_slen gnum+3