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
4 {9 a4 v- ]/ o- U7 g6 T, w#
7 D8 h; l. C% X  T, J6 N# One way to use this is by placing it into a file called "cors_support"5 J) Y! w$ u3 `3 u( @& |
# under your Nginx configuration directory and placing the following: M! g3 j- L. D+ }& }2 O: v
# statement inside your **location** block(s):
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% u' v& F6 g! _# include cors_support;
4 v4 m7 [+ F1 F+ K  X% u#
0 w! {3 F' K7 Q1 n/ g  N# As of Nginx 1.7.5, add_header supports an "always" parameter which
/ x5 A7 _/ g1 k) e2 T, ~. J: S* e# allows CORS to work if the backend returns 4xx or 5xx status code.! p7 L/ I. G' S0 I6 e
#7 n/ F  f' V& v. z8 m4 N) j
# For more information on CORS, please see: http://enable-cors.org/
! [/ K0 l% U3 Y. d& |' G% K# Forked from this Gist: https://gist.github.com/michiel/1064640
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set $cors '';, f3 J' D5 W2 t3 v4 O
if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {
9 Z! k3 U" A" g       set $cors 'true';
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# ~0 f0 m# L9 a& N, O; M9 gif ($cors = 'true') {9 a# W5 S9 |& J. A
      add_header 'Access-Control-Allow-Origin' "$http_origin" always;# a6 q. ^. r8 S. u- f" W
      add_header 'Access-Control-Allow-Credentials' 'true' always;
' `8 Y8 J& N$ F+ d       add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;6 g; |3 u, r4 Z. m9 Y+ 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;
, k- a2 r, w# ?- \) p9 W8 O       # required to be able to read Authorization header in frontend+ i& h9 I. T1 h, u% @: q
      #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
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0 L7 N+ E: R5 d/ g% ]( _/ e; Jif ($request_method = 'OPTIONS') {
9 I4 f' X2 c8 ^( j       # Tell client that this pre-flight info is valid for 20 days
1 k5 b: x8 L5 q6 e& A2 P       add_header 'Access-Control-Max-Age' 1728000;! T$ k! X& U4 H" [
      add_header 'Content-Type' 'text/plain charset=UTF-8';; e( s7 o4 ~4 b1 m- L
      add_header 'Content-Length' 0;
7 x+ o2 T) F( u; u2 F       return 204;
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if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;$ L& K; V) i  |
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set $origin $http_origin;0 Y, D4 J$ _/ y7 T
if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {& J$ x) y# l- \: q+ O7 k% h
   set $origin 'https://default.yourdom.zone';
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if ($request_method = 'OPTIONS') {
; R- B$ G/ A" e& p% Q. G    add_header 'Access-Control-Allow-Origin' "$origin" always;  T' Q0 F& e9 Z  I5 ^
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
- B( S! |( i( n& s7 K    add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;
- z+ t  a' P/ c6 j/ y& k# O: \    add_header 'Access-Control-Allow-Credentials' 'true' always;' ~, f7 n5 f' A1 \5 @/ v
   add_header Access-Control-Max-Age 1728000; #20 days
) g8 ~  r3 f# t8 z    add_header Content-Type 'text/plain charset=UTF-8';
# _- b$ d# K+ G5 C    add_header Content-Length 0;3 p: N7 s( t* {( p6 X% V' x
   return 204;( v- N$ K+ ~4 D9 P/ e
}
" ^# b6 t7 h5 H8 s+ U- m6 Mif ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {- {! _$ q  F3 g( K% w
   add_header Access-Control-Allow-Origin "$origin" always;
  r6 m0 b  m8 _8 H, ?, t  T, p    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
8 f! q  C+ ?* `! s7 }6 W; n    add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;1 U0 m5 f* |. S- t
   add_header Access-Control-Allow-Credentials true always;
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# based on https://gist.github.com/4165271/0 |9 R0 H- @+ Z8 V' Z
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# Slightly tighter CORS config for nginx1 G: h1 ]) A0 C- A, g$ }$ I8 o+ I/ ^
#
8 S% U  k* f* I3 ~5 K# r$ a. E! _" l# A modification of https://gist.github.com/1064640/ to include a white-list of URLs' ^, e7 i- x5 [1 _* |
#6 F1 f% k& |6 h6 S- j. a, r2 `% @) r
# Despite the W3C guidance suggesting that a list of origins can be passed as part of
4 \/ c5 m4 t( r3 @4 H. U/ F# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)5 G1 |% }: L/ Q) x) p7 z7 o
# 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
4 X, w2 f# [2 _$ o) G9 x7 ]# method to control access instead.
/ i; t/ L5 D# s2 G! A#
7 U; E8 T3 o5 Q# NB: This relies on the use of the 'Origin' HTTP Header.: t7 h. y" T1 \0 R

# f5 H, L% J* O2 Llocation / {+ p) ?4 ^$ r* G: F( Y" Q

% w/ ^' t/ m  X if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
9 l9 x" M+ q2 s& ]$ }8 ~       set $cors "true";
  m1 g1 R7 J5 x1 o% }" p }
3 a2 f& S& L, p+ k; Q! \4 @# k6 k
5 P, T6 S; u$ A # Nginx doesn't support nested If statements. This is where things get slightly nasty.
6 q: r  u: K3 c- B% }+ E' ~ # Determine the HTTP request method used
- D% g7 j  r8 {9 ]/ J" A) A if ($request_method = 'OPTIONS') {  Y( l* ^4 k0 q# b( T  f% H0 w
      set $cors "${cors}options";/ u( O$ x9 F1 v8 G; I
}
4 e4 h# X; q, w# W. A$ e4 \9 V if ($request_method = 'GET') {" q6 H8 P! Y% ?5 l
      set $cors "${cors}get";6 @% I7 o' s  f" u/ [
}
+ n( c& m" @0 d" t) F if ($request_method = 'POST') {
) e4 b3 Y3 Z8 ?' t# E) g) v       set $cors "${cors}post";
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3 N# R/ c; B3 X. }' P: g9 j if ($cors = "true") {; K4 v+ |  i5 l3 l" b
      # Catch all incase there's a request method we're not dealing with properly. l5 \: g; ?2 p+ f
      add_header 'Access-Control-Allow-Origin' "$http_origin";: `, p8 Q1 l: z% {8 v- ]2 T5 F
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if ($cors = "trueget") {: Z2 z+ @* @- P/ r/ i0 U
      add_header 'Access-Control-Allow-Origin' "$http_origin";4 q* Y( D* O5 y$ t
      add_header 'Access-Control-Allow-Credentials' 'true';/ s* B* |& p: Q* F! ]
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';7 r/ K) k3 c8 ?7 U# {
      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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# ~1 Z. E5 P( O* {8 e" j( [* }1 M
if ($cors = "trueoptions") {
( |( J# K& m4 f! L2 N$ @3 `# g( `       add_header 'Access-Control-Allow-Origin' "$http_origin";! O0 M7 X5 @8 c

3 q. Q# E" a: M6 t9 r) i       #
" C  H5 ?' r. B/ x' v8 `       # Om nom nom cookies
- |5 S7 G2 c/ {( m/ D- c! w5 _7 X$ x/ F       #
/ }. K4 W; A: I4 q& u       add_header 'Access-Control-Allow-Credentials' 'true';
. m6 j& x7 w) Q- Y. T7 }2 P, Q       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';: x( o: P, }$ W3 w' F7 x

5 C& H, y2 A' Y: E" y& K. ^( B       #
" m  Q( B7 V: W9 ]6 a       # Custom headers and headers various browsers *should* be OK with but aren't, W' }! n: A0 g  B* `* s
      #* o3 m% {( Y! e
      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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3 E' [1 w9 {" s- B- v       #
) Y7 w  y5 N4 g. s# D% M0 a       # Tell client that this pre-flight info is valid for 20 days
& }4 b/ p5 a% E  S       #. Q3 H" }) O7 C' Y/ d/ X
      add_header 'Access-Control-Max-Age' 1728000;
2 r) T9 J! d: Y       add_header 'Content-Type' 'text/plain charset=UTF-8';
* f$ P: c4 H% e* G& [2 }       add_header 'Content-Length' 0;9 f& @5 X+ j; `6 r( u$ P. `
      return 204;
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2 y, w; z9 |4 d# o if ($cors = "truepost") {9 J+ K2 z, b/ n6 Z. P$ u
      add_header 'Access-Control-Allow-Origin' "$http_origin";
" j  l6 i* [3 ^8 k* u! k       add_header 'Access-Control-Allow-Credentials' 'true';
6 t2 i) z5 m4 r" i' n* e       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';0 s) Q. v, o( n6 e
      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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