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nx_media_xrecover.nx

buildroot/runtime/nx_media_xrecover.nx

6737 B95 linesdepth 21pulls 147 transitivereach 0 importersview sourcekind tooltopic media

docs dependencies structs consts functions

about

nx_media_xrecover.nx -- CROSS-TEMPORAL media recovery (the Wayback-exceeding differentiator): given ONE image URL that is 404/missing at a page's timestamp, CDX-query the image URL for EVERY capture, list them, pick a status-200 capture, fetch its raw bytes (web/<ts>id_/<url>), and validate real image magic. Recovers an image from a DIFFERENT point in time than the page that referenced it. Reuses the proven fetch/CDX/validate stack. Usage: nx_media_xrecover [image-url] (default: the page3.com zoe2 image the operator started with) license_tier: ORIGINAL

dependencies 5 imports · 0 importers

imports: nx_syscalls.nxnx_x509_trust_store.nxnx_trust_store_load_from_certdata.nxnx_https_fetch_follow.nxnx_cdx_parse.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

12	const K_MAGIC_1000000007: i64 = 1000000007
13	const K_MAGIC_4194304: i64 = 4194304
14	const K_MAGIC_4096: i64 = 4096
15	const K_MAGIC_8192: i64 = 8192

functions

17	func gw(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 2: fetch_retry main calls 1: sys_write
18	func gn(v: i64) -> i64 { if v==0 { sys_write(1,"0" as u8,1); return 0 } var m: i64=v; if m<0 { sys_write(1,"-" as u8,1); m=0-m } let t: u8=sys_mmap(24); var k: i64=0; while m>0 { t[k]=(48+(m%10)) as u8; m=m/10; k=k+1 } let o: u8=sys_mmap(24); var w: i64=0; var q: i64=k-1; while q>=0 { o[w]=t[q]; w=w+1; q=q-1 } sys_write(1,o,w); return 0 } called by 2: fetch_retry main calls 2: sys_write sys_mmap
19	func gwslice(buf: u8, off: i64, len: i64) -> i64 { sys_write(1, ((buf as i64)+off) as u8, len); return 0 } called by 1: main calls 1: sys_write
20	func ap(buf: u8, off: i64, s: u8) -> i64 { var i: i64=0; while s[i]!=(0 as u8) { buf[off+i]=s[i]; i=i+1 } return off+i } called by 1: main
21	func apslice(dst: u8, off: i64, src: u8, so: i64, sl: i64) -> i64 { var i: i64=0; while i<sl { dst[off+i]=src[so+i]; i=i+1 } return off+sl }
22	func cid_hash(buf: u8, n: i64) -> i64 { var h: i64=0; var i: i64=0; while i<n { h=(h131+(buf[i] as i64))%K_MAGIC_1000000007; i=i+1 } return h }
23	func is_image(buf: *u8, n: i64) -> i64
32	func save_file(path: u8, buf: u8, n: i64) -> i64 { let fd: i64=sys_openat_wr(path, 0x1a4); if fd<0 { return 0 } var off: i64=0; while off<n { let w: i64=sys_write(fd, ((buf as i64)+off) as *u8, n-off); if w<=0 { sys_close(fd); return 0 } off=off+w } sys_close(fd); return 1 } calls 3: sys_openat_wr sys_write sys_close
33	func fetch_retry(url: u8, store: TrustStore, out: u8, cap: i64, st: i64, tries: i64) -> i64 { var t: i64=0; var n: i64=0-1; while t<tries { n=nx_https_fetch_follow(url, store, out, cap, 6, st); if n>0 { if st[0]==200 { t=tries } else { gw(" [status " as u8); gn(st[0]); gw(" retry]\n" as u8); t=t+1 } } else { gw(" [err " as u8); gn(n); gw(" retry]\n" as u8); t=t+1 } } return n } called by 1: main calls 2: gw gn
35	func main(argc: i64, argv: *i64) -> i64 calls 9: gw sys_mkdir sys_mmap fetch_retry cdx_rows gn+3