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
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# One way to use this is by placing it into a file called "cors_support"# ^  _* @4 X$ t1 ~! i
# under your Nginx configuration directory and placing the following
) q* d7 p. J9 M/ j# statement inside your **location** block(s):
$ i( u" a% ]# ]" w! v1 z#
5 p7 O# o) U# o, r# include cors_support;
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# As of Nginx 1.7.5, add_header supports an "always" parameter which
# K0 j9 O4 O; Q( F0 e: ~* z# allows CORS to work if the backend returns 4xx or 5xx status code.
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# For more information on CORS, please see: http://enable-cors.org/# W$ W) u6 a& `* }1 u, S3 S
# Forked from this Gist: https://gist.github.com/michiel/1064640
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set $cors '';+ K5 J4 M4 u  L0 y% g6 N8 _
if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {/ x+ E/ E" l+ U" q/ V4 I7 c6 b
      set $cors 'true';
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if ($cors = 'true') {4 T% U6 P: N( N) E# }! z) F) m
      add_header 'Access-Control-Allow-Origin' "$http_origin" always;
3 ^; h' V9 w4 }" P6 U       add_header 'Access-Control-Allow-Credentials' 'true' always;
& [% M$ E- ^+ S% E; a       add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;2 z$ S/ O- I' i" B; g" D
      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;
: s) _! ?# W/ G       # required to be able to read Authorization header in frontend
/ M: j0 a9 c6 P5 e2 ~       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
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if ($request_method = 'OPTIONS') {
, D" c% g1 g! d5 x! V- l       # Tell client that this pre-flight info is valid for 20 days
3 L; @: s( z* `3 O- m) v       add_header 'Access-Control-Max-Age' 1728000;
* d: |- N" z+ N- u' U. P6 O8 ?       add_header 'Content-Type' 'text/plain charset=UTF-8';
6 `; R8 V2 L! y, n- v/ d  b       add_header 'Content-Length' 0;; o& [/ G; \' y0 C
      return 204;
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if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;
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, e/ }* n: {' J4 L1 Yset $origin $http_origin;  q  C" T, l8 ^9 y0 }
if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {5 p. K5 ^' p, N. M# v5 d8 N
   set $origin 'https://default.yourdom.zone';
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if ($request_method = 'OPTIONS') {: T1 ]5 H$ Z4 C2 ]" `4 R
   add_header 'Access-Control-Allow-Origin' "$origin" always;
; n) X5 F" N" g    add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;7 L) h: v, _# N7 F' p
   add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;( h5 K5 T* F" g3 e0 u- D
   add_header 'Access-Control-Allow-Credentials' 'true' always;
. w6 K: y: `! y3 B' U. n    add_header Access-Control-Max-Age 1728000; #20 days
$ _5 v0 J* w0 b7 y5 ^; z; L3 M    add_header Content-Type 'text/plain charset=UTF-8';, D6 `* R3 |! y: f4 Z
   add_header Content-Length 0;
' s+ V1 Z* b8 @+ j% d7 L    return 204;, p! K5 }  s/ V/ O' F9 L0 U
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if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
% m8 \( G4 M* g+ @    add_header Access-Control-Allow-Origin "$origin" always;
! z8 w2 G% F  A, h8 f; v7 L9 z    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
' R. ^9 x: b- k; G/ p1 E' I+ G    add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;% ~% |; ~! q: ~8 f
   add_header Access-Control-Allow-Credentials true always;7 K" p9 _+ y1 i) ~  F  F3 I
}

# based on https://gist.github.com/4165271/
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# Slightly tighter CORS config for nginx
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# A modification of https://gist.github.com/1064640/ to include a white-list of URLs- R" {3 m1 Z+ u6 k9 e7 Z2 ]) s
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# Despite the W3C guidance suggesting that a list of origins can be passed as part of, ]. D0 J# ~6 H" O
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)( z! g$ Q9 I' }/ l
# don't seem to play nicely with this.
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# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
1 \, U. R! a  \  q" w  Y8 S7 h# method to control access instead.
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# NB: This relies on the use of the 'Origin' HTTP Header.9 i, i' C8 L; l

6 y& A4 W( R' C2 @  H/ Y4 @location / {+ ?/ ~1 Q' i  F% O' s$ P
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if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
7 K% X3 }/ ^/ ]) H2 O. o       set $cors "true";" t0 v- ]/ M# \) N- [
}
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# Nginx doesn't support nested If statements. This is where things get slightly nasty.$ i% I/ u1 C7 R! ~
# Determine the HTTP request method used
# T/ ]# B3 @1 \. V5 h! \$ T1 b: U if ($request_method = 'OPTIONS') {
3 p* b! @$ n/ s  |' E0 x4 c       set $cors "${cors}options";/ u/ r( _: m& X# B8 t
}
if ($request_method = 'GET') {
: O; Q/ n3 Y4 o* y1 ]       set $cors "${cors}get";, Z; ]$ \+ c$ A! Y3 Q# [& s
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if ($request_method = 'POST') {
6 ~8 L! b# A! t! I7 M3 x$ y8 w       set $cors "${cors}post";0 G# X% q) G) w
}
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  m6 o- X( V( y8 y% ?0 y* L, @$ Z if ($cors = "true") {+ |" [1 T% L) h8 M
      # Catch all incase there's a request method we're not dealing with properly6 T  ?2 Y( U' i/ \: w: Q
      add_header 'Access-Control-Allow-Origin' "$http_origin";
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$ `# X! f( T* _3 j( x! [; x if ($cors = "trueget") {& G" F0 U, l1 `3 ~# Z
      add_header 'Access-Control-Allow-Origin' "$http_origin";
9 n3 v5 J# k' V2 m       add_header 'Access-Control-Allow-Credentials' 'true';
: x, z( t! Z6 w% j8 {3 Y       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
, ]- S, g: `& G$ \* l! M! H( i       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';$ B8 S2 j% B7 m+ x  y$ R
}
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+ b7 j- {- a* u* K if ($cors = "trueoptions") {
+ K2 j6 E* K% }5 f& z2 Z       add_header 'Access-Control-Allow-Origin' "$http_origin";
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      #0 ]- p1 t" A8 z+ O
      # Om nom nom cookies' G" m1 V! b2 w) i+ b
      #9 L8 b" ?1 s9 A; r! b4 Q# Z" N. v
      add_header 'Access-Control-Allow-Credentials' 'true';* D$ }8 h. J& ~6 Q
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
# p) }3 |6 k# t4 F7 a
! Z* k4 H! W, g5 B# c( \2 ]       #
% o2 E/ ^4 Z+ @" z       # Custom headers and headers various browsers *should* be OK with but aren't
$ B* H. P& w: P5 J- j1 O       #: D: ^3 P& Y7 i. m% H, D7 d2 r
      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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/ E( W9 ]5 f1 K5 y& S5 B       #; c9 v, V9 O. {! n, g" X& P) ?
      # Tell client that this pre-flight info is valid for 20 days( `+ P2 V$ m0 e: A! I. r
      #
5 @4 K% d' [& q       add_header 'Access-Control-Max-Age' 1728000;  B& D" r1 _" w; ~
      add_header 'Content-Type' 'text/plain charset=UTF-8';8 B  a5 U1 }  F$ L
      add_header 'Content-Length' 0;8 z8 L1 |1 Z+ `: ?. @
      return 204;/ X) m) P7 D7 _0 X2 G; S
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' c$ |. m9 x: J3 X9 I4 c if ($cors = "truepost") {- t6 N, v; a( f$ J6 m' o6 o
      add_header 'Access-Control-Allow-Origin' "$http_origin";' e& Q3 |8 F3 b
      add_header 'Access-Control-Allow-Credentials' 'true';
/ h2 N' ^& p9 D) u7 T0 W/ t       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
1 t8 J$ ~5 T8 v9 v) k) l# U, n       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';- [: U, v1 p+ ]2 r. E# t3 C4 v9 ?
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