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/ `9 m. I9 O+ @6 U
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# One way to use this is by placing it into a file called "cors_support"
' j0 C- q, [8 ?4 A2 `# under your Nginx configuration directory and placing the following
' ^, P1 B6 H; q# c# B  |# statement inside your **location** block(s):
- ^$ C1 o" J- T( t/ s+ U#
9 n% f* ?: B1 j! _4 ^7 R, \1 d; i# include cors_support;7 {) G- E7 B( ^% o3 x
#
" S; [0 o: G* \+ _# As of Nginx 1.7.5, add_header supports an "always" parameter which- R$ ^% V& ^" C5 M+ A9 j- ?2 I
# allows CORS to work if the backend returns 4xx or 5xx status code.9 h2 d9 D* Z, ~% w  K6 G9 a
#1 D) r1 q- ^- b% b! i4 i
# For more information on CORS, please see: http://enable-cors.org/% p7 }, W: w5 P# _
# Forked from this Gist: https://gist.github.com/michiel/1064640  k7 C) R+ z8 ~) _, g: Y
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set $cors '';
8 \: ]" t1 ~3 J! d) ]7 Uif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {5 f8 b6 U" z1 r1 z4 _
      set $cors 'true';
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if ($cors = 'true') {  l9 `$ R  a2 ]5 v% _( i
      add_header 'Access-Control-Allow-Origin' "$http_origin" always;
9 A: D' n: ]4 D; r' _) T       add_header 'Access-Control-Allow-Credentials' 'true' always;
. l4 Z% Z% v0 o1 o( @* ^1 y       add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
  {0 Z3 }- a- V; e2 R3 v5 h       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;1 U/ i9 v) K0 M
      # required to be able to read Authorization header in frontend
$ X8 V# h3 F4 H4 \; T6 {: O, e       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
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6 Z3 Y0 E$ a- _6 w; D# ^; o) xif ($request_method = 'OPTIONS') {8 S  t0 V) u1 W- M5 t( u
      # Tell client that this pre-flight info is valid for 20 days
9 D% \3 |6 g( z* Q% T2 f: v: l( ?. q       add_header 'Access-Control-Max-Age' 1728000;
  C2 \* k! E* i       add_header 'Content-Type' 'text/plain charset=UTF-8';0 S" q" [/ ]5 k5 x; [
      add_header 'Content-Length' 0;4 o6 _7 W; k) n+ T' Q- B% }0 D9 s. Z2 k
      return 204;; t3 m7 @- u( G' {) g1 s8 l4 }0 R3 ^( F
}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;0 F5 B6 u& v' Q/ ^5 p7 P0 J5 K' _
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set $origin $http_origin;$ J8 m. l4 F5 ^7 H2 v
if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {. v8 c0 g' j  R3 W, U
   set $origin 'https://default.yourdom.zone';! A6 W$ k  z: l
}$ S( Y1 r* Z; V$ y2 t! V2 v
if ($request_method = 'OPTIONS') {
6 @! K5 H$ y; }2 l& |    add_header 'Access-Control-Allow-Origin' "$origin" always;" `, H" G3 l& a  `9 N3 K8 y6 g- ]
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
8 J7 J; |5 ^' |8 t    add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;! Q/ H1 I6 d4 a+ W
   add_header 'Access-Control-Allow-Credentials' 'true' always;
: J* I, p% P5 m- P$ Y- X    add_header Access-Control-Max-Age 1728000; #20 days % H1 g! w- f' r3 ?
   add_header Content-Type 'text/plain charset=UTF-8';0 I- e4 V( s4 [5 d1 A' i
   add_header Content-Length 0;
  z$ j. g8 V7 u' d# c5 _( k& c" K    return 204;
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  F' a! p5 O" r) Z/ J1 i- [if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
# a8 i, n, s4 R- t    add_header Access-Control-Allow-Origin "$origin" always;
" C0 B# ]' d& m2 N. ^' Q( o    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;6 j1 T/ _7 O8 G+ r) d
   add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;' P( C+ F" a1 x. {* b9 D0 y
   add_header Access-Control-Allow-Credentials true always;
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# based on https://gist.github.com/4165271/
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# V4 \  D9 p! {# 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: |& q) B/ \4 d) @
#
# Despite the W3C guidance suggesting that a list of origins can be passed as part of
" P5 b, u8 p( q) u5 E! `# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
3 k, X: [* k: U, X# don't seem to play nicely with this.$ L8 C8 }: `, p( k3 D
#
' l) J/ ~! P, v! u' r# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
; b6 x; y+ N" I, D# method to control access instead.
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# NB: This relies on the use of the 'Origin' HTTP Header.
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location / {1 I: O4 L) L  r$ ^# o; r

* t# k6 V% v+ e4 R if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
6 O% m) X3 m. K/ s       set $cors "true";  \8 |! z* [7 j% U6 ~" V3 A
}" q; M' l9 i$ N4 h2 C+ B+ b

. B9 [" t3 [' s* ^. @& s. K4 n+ a8 u # Nginx doesn't support nested If statements. This is where things get slightly nasty." }) I  ^: H( A9 e  G; p
# Determine the HTTP request method used5 ?) g/ n. t! v; d1 S+ v# d
if ($request_method = 'OPTIONS') {$ N* @0 ^% t9 I2 U2 v
      set $cors "${cors}options";5 Y0 g) u, e/ @" u
}
# N5 v/ m& R5 Z/ |) [ if ($request_method = 'GET') {2 m$ H, P9 ?6 ~0 B) S
      set $cors "${cors}get";
* z! i. `* n, m5 Z) {; S, l# c }
; k: p/ O0 X- x* ~ if ($request_method = 'POST') {. z6 @" o$ B8 y1 p( ]
      set $cors "${cors}post";/ h- M$ b% {) W7 B
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if ($cors = "true") {) m0 y: o2 ?" ?/ \3 l* {* J
      # Catch all incase there's a request method we're not dealing with properly" v% R5 y5 r$ C/ V: W
      add_header 'Access-Control-Allow-Origin' "$http_origin";
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if ($cors = "trueget") {
: t+ M" e4 J4 s( Z3 W       add_header 'Access-Control-Allow-Origin' "$http_origin";1 X$ a2 k5 K& z% {
      add_header 'Access-Control-Allow-Credentials' 'true';4 O( B( f1 |" U
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';& X5 q1 i: Y7 X9 _
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';0 d2 k" R5 A) m( F* r5 j8 {( t6 S
}, q% g+ J  i$ ]- ?- Y
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if ($cors = "trueoptions") {$ ]! t" ?0 O, L* V1 K3 R
      add_header 'Access-Control-Allow-Origin' "$http_origin";
% {" V; \7 D7 ~* b/ o' i- _: H* B: A
      #+ [# z% _3 D# s- ^" P0 v% }! e3 f' n
      # Om nom nom cookies) n7 Y# S' k; ?8 l& u9 }
      #
9 ^" l: \- v  Q2 Z& m- `       add_header 'Access-Control-Allow-Credentials' 'true';
; e  \  K. ^) i# t       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+ a* ?: z' V/ L4 K
& o2 K7 g% \1 P4 C       #
0 L) Y  |5 Z8 v2 g) I# c       # Custom headers and headers various browsers *should* be OK with but aren't
( ^- Z" [5 {* j- T" `       #
$ y0 f' f7 |0 O! M$ 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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      #
) N1 N* @( A. y, V, K8 w       # Tell client that this pre-flight info is valid for 20 days
3 H! \) K* O( L, d( [       #
: E, C, ?6 U; Z6 {$ S       add_header 'Access-Control-Max-Age' 1728000;7 W# v; @* k& ~& C% u
      add_header 'Content-Type' 'text/plain charset=UTF-8';
* d/ d: o1 H# \, N       add_header 'Content-Length' 0;3 R3 _% h$ n; K  M& z
      return 204;- o0 ^& D0 ], l- _8 K7 B
}
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$ b- x' j* y, z5 }$ _ if ($cors = "truepost") {6 u! U7 p# d7 x8 v
      add_header 'Access-Control-Allow-Origin' "$http_origin";
( y* h- |- y& A5 l/ ]  @1 v0 l       add_header 'Access-Control-Allow-Credentials' 'true';4 x+ J: d8 _+ P) B
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
- X' A5 ^. q. G4 ?9 O       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';3 }" l4 i& N. C$ ~
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