Nginx之CORS（Cross-Origin Resource Sharing，跨來源資源共享）來實現防止盜連多媒體資源 - 52AV手機A片王|52AV.ONE

# CORS header support: \1 a8 I; q6 E4 S
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# One way to use this is by placing it into a file called "cors_support"
9 C, N0 g, _0 Q5 v# under your Nginx configuration directory and placing the following3 C& i& @1 ^2 ?1 P2 w9 v' B
# statement inside your **location** block(s):
5 `+ Y9 ]* e; Q' \8 W#
  z1 Q2 y" a1 t9 [, A# include cors_support;
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# As of Nginx 1.7.5, add_header supports an "always" parameter which; s$ X) l/ N8 C) Y6 z; v0 H
# allows CORS to work if the backend returns 4xx or 5xx status code.5 w0 A- z; }8 O6 V# ~; `
#, X  H% [2 S/ B, J7 o3 }- l
# For more information on CORS, please see: http://enable-cors.org/; M+ Z2 h6 ^+ s" `
# Forked from this Gist: https://gist.github.com/michiel/1064640
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set $cors '';
8 H0 k! f7 a4 g% C+ uif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {) x, e- `' c- g+ u# ~
      set $cors 'true';
# k# |" C$ s5 {1 v( c}
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if ($cors = 'true') {) g7 V9 \2 I! X/ Y
      add_header 'Access-Control-Allow-Origin' "$http_origin" always;- P9 g. v7 g+ d9 ~( P, J$ R
      add_header 'Access-Control-Allow-Credentials' 'true' always;) ?* P5 d! ]7 q  j/ _
      add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;, m, F/ f/ _% c5 m
      add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;! ^! j  l4 a% i
      # required to be able to read Authorization header in frontend
& E3 G+ n7 \& J) z( V: n" ?' G2 M       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;' z1 N  X- `' l( z6 M  P/ d0 I, l
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if ($request_method = 'OPTIONS') {
, @' g0 ?& ?" Z+ B( T       # Tell client that this pre-flight info is valid for 20 days
3 I+ J/ ~; ]! R       add_header 'Access-Control-Max-Age' 1728000;# c; ^% F+ ^9 S, M. }6 s' W
      add_header 'Content-Type' 'text/plain charset=UTF-8';
9 e) `0 g* \! Q6 i       add_header 'Content-Length' 0;
( ^+ s  K0 x! o0 A       return 204;) [1 a' j6 {6 m  {
}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;
$ D0 |2 c  q3 l3 f- M! G}
) D$ [4 z5 j+ i) V6 lset $origin $http_origin;
! f7 ~. E6 y% e6 K# O: U0 lif ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
7 D* x8 b3 r+ v+ l8 I    set $origin 'https://default.yourdom.zone';
# Q; z/ }* y- g" K4 Y; g6 G; w}( z( M5 v3 X% D1 Y$ i
if ($request_method = 'OPTIONS') {
: P7 p- b. [9 v# N! a: H8 X( x3 B    add_header 'Access-Control-Allow-Origin' "$origin" always;. w3 H0 c% @7 k+ i( \4 q
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;5 O3 X0 B, A% w7 I) J' s( @8 X
   add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;
$ v/ U, S9 A- x8 g& R    add_header 'Access-Control-Allow-Credentials' 'true' always;
# H. E8 x0 Y5 w1 o2 @0 `* G0 P) ^    add_header Access-Control-Max-Age 1728000; #20 days
6 A; X. e1 x& x1 d. u) T, [5 b    add_header Content-Type 'text/plain charset=UTF-8';
% G4 H! f2 u! n; L% V    add_header Content-Length 0;
$ F8 `$ Z6 G9 g4 T, W    return 204;
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if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {) _1 ^- B7 b0 s  J
   add_header Access-Control-Allow-Origin "$origin" always;8 s& z- c/ t% s& P( ?
   add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
6 @$ L' f/ y$ \. l  t    add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
6 [* f, O5 Y/ G* @/ ]( B    add_header Access-Control-Allow-Credentials true always;% T  ~% ~' Z9 {8 {& J% d
}

# based on https://gist.github.com/4165271/
* ?$ B, m8 ?; v( c$ g) Y9 l* r#
, o0 h- K0 \5 z& E1 O  x2 w# Slightly tighter CORS config for nginx
( @  U" C, h' x#
. J  Y! v% R! b+ U# A modification of https://gist.github.com/1064640/ to include a white-list of URLs
3 ?/ X3 W' n' _& M#
" d3 w/ T2 I8 l* V1 U/ l# Despite the W3C guidance suggesting that a list of origins can be passed as part of1 o* y) J! H! K; s% F
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
9 q, N! _3 r; s4 |: D9 s9 d# don't seem to play nicely with this.) ^. }) y9 b; k
#) }, V' T! O- y, k2 N
# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
: P. H- o0 O* [2 A( m( y: }3 o# method to control access instead.
! h7 J1 P9 {- ^7 c& N  G#2 W5 i+ d# D2 X  S; A/ V: S
# NB: This relies on the use of the 'Origin' HTTP Header." x& u: {- s% G3 i. v# `
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location / {9 l& Z, R8 G; V3 n  m9 r2 X4 w7 g$ T

4 _* {( W- ?$ w  ~: X. V6 l: s1 U% g if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
6 R# c  k7 [$ s/ Q  r       set $cors "true";, r/ h+ K0 R# f9 w. }
}
: B, J% B: y, d, h0 P; |
. D5 k7 [! i7 M3 f  V! L # Nginx doesn't support nested If statements. This is where things get slightly nasty.
! p2 D9 k3 I6 G" s* t- C5 X$ g0 F  Y # Determine the HTTP request method used
/ X/ f7 r8 H5 C if ($request_method = 'OPTIONS') {
) E% p" e. v! ?+ @2 Q  q' I6 F5 a0 F       set $cors "${cors}options";
: e+ S& C  S3 x6 C }; ^4 e. I. R! e4 q5 w" |# N
if ($request_method = 'GET') {/ _5 d! a' z4 Z8 \! I3 x7 I- h
      set $cors "${cors}get";4 e+ F5 Y6 P3 M# V
}# f3 z% R) l& O
if ($request_method = 'POST') {; O, l. E  r  b( }3 l
      set $cors "${cors}post";, n! u; q* t4 R$ Q- m( l
}
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if ($cors = "true") {' h) I9 J) W, j" g1 P. I" X8 `
      # Catch all incase there's a request method we're not dealing with properly- @3 b$ ?) q  f  x. v/ q
      add_header 'Access-Control-Allow-Origin' "$http_origin";
6 \1 n& z) ^: u1 |7 H5 {4 w }
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; o0 T% {" c, _3 N$ s9 R if ($cors = "trueget") {
* Y9 H; y9 ^$ i3 g  f8 _! t       add_header 'Access-Control-Allow-Origin' "$http_origin";8 h, `' v0 C; O9 p$ }
      add_header 'Access-Control-Allow-Credentials' 'true';+ }) ~& h4 N7 j3 `
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';! D( B2 T" M3 E& n  b3 D
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
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if ($cors = "trueoptions") {5 c+ j& Z  o! r9 Q9 }2 p8 [! N
      add_header 'Access-Control-Allow-Origin' "$http_origin";
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      #
% _$ A# T6 G, P; b6 e) h3 R       # Om nom nom cookies8 T2 R8 Q! v/ X* |
      #: M  c) n: f* M1 X" v$ I' W
      add_header 'Access-Control-Allow-Credentials' 'true';
5 b. ~( R1 y  ]# H$ R       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
6 U! ~9 N1 L+ L% D' `5 v) l7 R
- Z' h' K& u/ W9 ?       #
) m* E, H& q: A+ q2 t& _' h) N, Z       # Custom headers and headers various browsers *should* be OK with but aren't
) S! s3 k1 t0 W0 Z3 }* W       #" \+ w5 V/ M# F$ r" G, k4 R
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';3 X, a5 b) z  ~
  {$ w6 A% W" L2 u$ f
      #
. j, o; M! n; ~5 u/ N" x# P( k5 J. {* g       # Tell client that this pre-flight info is valid for 20 days
5 L/ E4 \8 ?* e! [! p& r       #* Z. k4 `) z6 J, L
      add_header 'Access-Control-Max-Age' 1728000;
! E  _) E& a- e       add_header 'Content-Type' 'text/plain charset=UTF-8';
! N( }( p& h& [' s3 Z' X: ]       add_header 'Content-Length' 0;, q" r( `# w- ~+ N
      return 204;  l+ x$ K6 }0 I: T8 T
}
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! g5 y6 \9 U0 ^, a1 y0 R1 } if ($cors = "truepost") {
4 s( q( Y" Z+ `5 e1 n5 a( ?4 \       add_header 'Access-Control-Allow-Origin' "$http_origin";3 O3 p4 `# o" f9 W' [, ~
      add_header 'Access-Control-Allow-Credentials' 'true';0 T) Y4 L: j+ v6 K% o% j8 E+ k
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
! J  l6 p. u6 m9 L4 n5 a2 N       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';6 s" D( S" }- N* a2 [0 U
}
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}