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  h1 H7 V, c; r0 M# }
#
3 C5 r  g- o- {/ k" V- w# One way to use this is by placing it into a file called "cors_support"
4 |! p5 |- @/ ?. ~9 C# under your Nginx configuration directory and placing the following
% Y$ i0 n& V1 i, r* P  P# statement inside your **location** block(s):4 l1 E+ d' x3 J( _
#
9 P2 s# n4 A% A, Z# include cors_support;2 T, b; S0 H$ ]% ?6 ?" `! Y
#
0 c3 c, P. J; X# As of Nginx 1.7.5, add_header supports an "always" parameter which
3 t4 @" V! d4 O/ |2 s3 F, ], u% q& c# allows CORS to work if the backend returns 4xx or 5xx status code.+ K9 y0 g/ _  i9 F0 v7 V( B
#
+ k5 y% ?6 R0 t/ x- ]9 J# For more information on CORS, please see: http://enable-cors.org/
  R1 m5 a6 o, K, U3 k; @# Forked from this Gist: https://gist.github.com/michiel/10646409 ?7 ]8 y3 `" W- W, q1 `9 h
#3 t4 R  Y3 T% D# U# j
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set $cors '';
1 _* r2 W7 J! K" [  J. i1 Lif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {
: L, U8 t; N  p  P6 @       set $cors 'true';$ Y; e9 M( d3 ?7 E
}" c! ~" j; J, ?' c3 l7 m
: A8 ^) I. z0 @1 W8 V& N' _
if ($cors = 'true') {: ]9 @; K; ]8 o  V  O
      add_header 'Access-Control-Allow-Origin' "$http_origin" always;
) G/ v7 e+ v  n# J3 n       add_header 'Access-Control-Allow-Credentials' 'true' always;
! b4 ^, |$ x" r: O( r# K       add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;' w0 N* P) Z# e4 @; V
      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;0 Q0 v+ d; ]- u. |  y! X1 `/ n
      # required to be able to read Authorization header in frontend
! q! D0 p7 a. `) U       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;5 D8 s4 F6 @& {# _6 [
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if ($request_method = 'OPTIONS') {) g5 q' F' ?# F, s  O3 }
      # Tell client that this pre-flight info is valid for 20 days) l, a2 A8 P1 ]# Y
      add_header 'Access-Control-Max-Age' 1728000;% U, G0 `1 G" ~# G
      add_header 'Content-Type' 'text/plain charset=UTF-8';
4 J& R  |7 l6 m  b. u5 X# a       add_header 'Content-Length' 0;
0 b8 v1 \9 V: u; Z       return 204;
+ ?% ~1 R. J) E! Q4 M, I0 p* c}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;
' D" E0 Q& r: F5 x3 q$ y$ T3 {}# {2 w/ s! a/ ?$ _' @0 a: ~& s% t3 F
set $origin $http_origin;
3 \' E# x0 v( Dif ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
* C  R; \9 {5 m    set $origin 'https://default.yourdom.zone';
# Z. b$ f& w7 w/ ?) z}
( g/ H6 [. B; u  J; P! j; t- wif ($request_method = 'OPTIONS') {+ f( I6 }7 ?4 }' G8 ~6 H7 G
   add_header 'Access-Control-Allow-Origin' "$origin" always;- T  i9 L* Y! A" r  _
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
' a2 ^% C" D9 c# k: P4 m+ R+ [% Z$ L    add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;- Q! ?5 r/ Q6 ~
   add_header 'Access-Control-Allow-Credentials' 'true' always;2 c- Q2 Q- ^% _0 w
   add_header Access-Control-Max-Age 1728000; #20 days
" N1 a7 @/ X& t$ s5 V    add_header Content-Type 'text/plain charset=UTF-8';% A# |* s3 X5 D6 m. Y
   add_header Content-Length 0;
8 g5 T+ J9 ~: M4 g+ q* {) k0 _. }$ J    return 204;
6 m6 j3 j1 G/ K}
% R- F! H4 C4 c0 R' Lif ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {9 z  C# }- |! I( e, l- e
   add_header Access-Control-Allow-Origin "$origin" always;
/ P$ \; W; d" g! Z4 d    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
, q) u- `# {# a# Z. g5 F. A8 _9 @    add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;5 j. V6 m9 X* S; B* U% F+ C
   add_header Access-Control-Allow-Credentials true always;
. V4 W  O$ [" f4 c6 n" x}

# based on https://gist.github.com/4165271/
" n4 j' M8 `' I) y#
2 n' ?8 t& g8 _2 L# Slightly tighter CORS config for nginx
* k4 _$ W# N2 ~* @9 P9 `#
3 _0 B# x- R1 a2 K# A modification of https://gist.github.com/1064640/ to include a white-list of URLs: i* W' k) @( N# b
#5 }5 W& {$ i% ~* }4 ^
# Despite the W3C guidance suggesting that a list of origins can be passed as part of8 _; H- X  \# s! n1 j: W- _1 N
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
0 F8 p% R1 U  j! |0 M# don't seem to play nicely with this.
0 w' E* L/ i; v( M: R+ M. e#  Y; k6 _- U; e; W2 B( k/ C0 G
# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
1 x. u: |( a- }# u- h0 K9 b1 L# method to control access instead.' }% g* K. t1 A1 ?8 I+ L
#7 T- e( c4 q" K
# NB: This relies on the use of the 'Origin' HTTP Header.4 r! n6 S9 h8 X- L/ l3 V
3 P" e1 I& _* j5 c' q0 X
location / {0 C2 K6 L9 I" \- x* H: a! d# K& [& f

& O) s2 i  A' D. a4 q- G if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {6 t1 Y! O5 }& X7 ?' z. L/ ]
      set $cors "true";$ x8 O) B3 h7 A5 w
}
% t0 \9 S! n6 u4 z9 J1 t4 ]) K: `- i9 Q7 u9 m5 x% N
# Nginx doesn't support nested If statements. This is where things get slightly nasty.& O$ s, j8 Y7 M7 O4 y7 H* y
# Determine the HTTP request method used
' h, g% x4 V1 [5 p' R* g if ($request_method = 'OPTIONS') {
' A1 U( w* S# o' K, e& j       set $cors "${cors}options";3 }% ^1 u9 c8 T/ g- l' y
}
! {7 ^' G1 [# U9 p8 C if ($request_method = 'GET') {
% v( B" y; U5 b. W- l2 v5 f       set $cors "${cors}get";! s% C9 h3 |( y' c
}
( v: g) c& K0 Z: R' u3 f8 l if ($request_method = 'POST') {
( C7 O- U& i8 D6 M       set $cors "${cors}post";' K, t, g% V% c) N
}0 G% h7 B! l* V# W8 C+ L

& `) u. t& q; e8 O( S7 I  S; ? if ($cors = "true") {# G" `  v5 M5 d# v" t
      # Catch all incase there's a request method we're not dealing with properly
: C; z% W1 u$ f: a& O+ V) c       add_header 'Access-Control-Allow-Origin' "$http_origin";  j* a0 ^/ V! r( q5 ~6 k
}3 O- @' B8 T1 ]

if ($cors = "trueget") {' S( m0 E5 f  y# _4 w
      add_header 'Access-Control-Allow-Origin' "$http_origin";$ F* W+ P( b3 `: R/ \/ s3 X
      add_header 'Access-Control-Allow-Credentials' 'true';
0 E4 o- }* N0 n; \  I; D) L5 I2 ~       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
2 H  x0 Y( h# R% j- U- {- b       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
3 s, [- ^9 T  t$ V }
' O3 m' O2 i- v8 s7 @" c+ r, Z8 x/ ^- g) w4 `  L& a
if ($cors = "trueoptions") {
4 |/ p. ], v4 b       add_header 'Access-Control-Allow-Origin' "$http_origin";
& T3 Z  E& c. ~4 f5 ]1 |- L1 @- x
      #
. N# Q; t2 m: f" x' t9 t       # Om nom nom cookies
3 \7 ~" N6 ^- @5 |% ]) f       #
- {7 M  t5 A- M! W; [+ E( q0 f       add_header 'Access-Control-Allow-Credentials' 'true';, L& \$ K3 [- U& f4 }  o. {( ^
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
) ]( F$ x8 F3 y  @9 t' \; _
9 d0 j* X4 i/ [5 {5 a, u       #
5 d' Z4 G9 {, e5 V2 E/ H, i9 G7 L       # Custom headers and headers various browsers *should* be OK with but aren't  A' t$ R9 A' O7 P2 G; k  z1 A
      #+ @4 h6 j6 Q) M1 o, X0 `* v
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
  F# B! ?1 w6 ?$ O" e2 c9 c$ k9 _0 J3 k8 m
      #
0 k2 c) g6 G; \: O) n6 p# ]' M! E       # Tell client that this pre-flight info is valid for 20 days, U8 z: l$ L% n- @4 D9 ?+ ~# q
      #
/ G9 R5 p! i! j' b& c       add_header 'Access-Control-Max-Age' 1728000;5 {0 t0 G; z" o
      add_header 'Content-Type' 'text/plain charset=UTF-8';" i6 x8 i( S( b% N
      add_header 'Content-Length' 0;7 Q6 z& i* ]4 V' I% k! d; c
      return 204;* F1 Q$ ?& n- f1 g# Z8 }
}
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5 C# p6 h  c' E) O if ($cors = "truepost") {
* B( ]/ j5 u6 @, f0 j* v5 r  O. R       add_header 'Access-Control-Allow-Origin' "$http_origin";1 P( `' n, ]6 I- P
      add_header 'Access-Control-Allow-Credentials' 'true';
# N* Z. A4 G3 P) T5 m) B       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';! T; a; |3 Z, Z& L
      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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}