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
$ A& [9 Z" l2 u) a5 M#
4 d0 g9 p# @/ b& a) _. k# One way to use this is by placing it into a file called "cors_support"" G+ b' x$ W3 m, ~+ g- ]$ s1 H% U
# under your Nginx configuration directory and placing the following" Z' i8 b, I+ T, }5 w: E
# statement inside your **location** block(s):
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5 b5 p# `' F3 r% b" r$ h6 t# include cors_support;
. @, R* G+ H+ v4 a# w#
9 L: S) Q2 J9 w& F' @# V2 P# As of Nginx 1.7.5, add_header supports an "always" parameter which1 w% L. x/ e! ?2 j( u' ^
# allows CORS to work if the backend returns 4xx or 5xx status code.
! E1 y. c/ f; g: T( s: k#
9 O6 F- l3 n/ m. @8 T# For more information on CORS, please see: http://enable-cors.org/
2 K7 p6 y2 h' p  a: @' g3 e* `# Forked from this Gist: https://gist.github.com/michiel/10646403 [; p2 N* g8 I& c& M, E8 J6 P
#
$ Q+ m; W; U5 K2 r- y  T& u3 S3 I* S& _/ {
set $cors '';
% c  d" k/ a: X0 Y+ eif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {' s& N" L) Y4 d/ g/ R
      set $cors 'true';
% }  {5 ?. E# `! [) N}; z, ^# a/ A; D0 `% N1 w
# }9 |. O7 I' }4 r8 p5 N% w
if ($cors = 'true') {
: O& }% o/ w. m       add_header 'Access-Control-Allow-Origin' "$http_origin" always;0 E, Z# J5 T1 O1 U: p- Q+ [2 A; M
      add_header 'Access-Control-Allow-Credentials' 'true' always;
  _1 P1 U+ ^* R# y7 G$ j       add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;, B3 |) m* c# r  ^- 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;
' ^$ N; u' d+ p1 y9 S: f! R% [& }       # required to be able to read Authorization header in frontend3 A3 j' k  Q( I* ^
      #add_header 'Access-Control-Expose-Headers' 'Authorization' always;( T, |! R+ ^  U. B  j1 p2 C8 ~
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if ($request_method = 'OPTIONS') {
8 G, V8 g) V; @       # Tell client that this pre-flight info is valid for 20 days
% o8 l% k# u  M) n0 s       add_header 'Access-Control-Max-Age' 1728000;' Q9 `7 B8 K  I1 ^6 T& X
      add_header 'Content-Type' 'text/plain charset=UTF-8';7 K4 l( z+ e+ O, z" P
      add_header 'Content-Length' 0;! o+ N5 P6 O+ `' P0 @
      return 204;
7 ~' Q% o$ d2 }. D4 `: |}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;, ?& [- P& b+ D
}
: W: Q+ y! V- C) D  yset $origin $http_origin;
- R  X: ^$ V9 F. Z( rif ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
4 ~$ n* _! O/ L8 Z0 F, q    set $origin 'https://default.yourdom.zone';  g' a; B0 u; F) \( ]2 j3 g- n$ }
}
/ f) l& N% H; N1 m6 R# D( Oif ($request_method = 'OPTIONS') {
+ k0 v( G" B0 R4 M' K    add_header 'Access-Control-Allow-Origin' "$origin" always;
- |( \: l# |. a    add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
  s1 o' Z1 x' n4 p9 V  l; @( f    add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;
0 E6 W5 C' w- i9 |. W, r% ?( a    add_header 'Access-Control-Allow-Credentials' 'true' always;2 J, {( B7 u- S6 F' ~; S6 i
   add_header Access-Control-Max-Age 1728000; #20 days
" W- k8 w; E% a9 U. b    add_header Content-Type 'text/plain charset=UTF-8';
+ N9 k9 [; U- c2 S" e) p" X    add_header Content-Length 0;
5 z; l0 b7 Q# Q4 C8 x; v    return 204;
* V: t: C, J* Y+ K}; G# o; T5 S, l# {
if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
4 o. M4 X/ M7 k3 a! ]- C    add_header Access-Control-Allow-Origin "$origin" always;
8 G/ i6 H7 O5 ^2 Q, a+ d    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;' n, I. B$ ^5 a* I' C8 V. X1 O8 k! t
   add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
8 R- b; ^6 c) [    add_header Access-Control-Allow-Credentials true always;4 U9 w% ]8 E% h* y) g* h
}

# based on https://gist.github.com/4165271/% O4 J# e6 |) g! ~# H1 J
#! f* E* [( J. d
# Slightly tighter CORS config for nginx  ?7 [' ^- l1 C2 V. T& [7 ^1 I2 Q
#% m6 m# D! ~# i7 A- m# q4 {
# A modification of https://gist.github.com/1064640/ to include a white-list of URLs- r/ t3 c- z, x  E7 g3 d. i* [
#% Y& R% ~+ A  r6 z# J$ L, Z9 ~
# Despite the W3C guidance suggesting that a list of origins can be passed as part of- [6 M7 m! k0 q" l; ~& e
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
6 |; @% G9 [" N7 H3 i. [# don't seem to play nicely with this.4 |0 V% ^' p/ y9 o, D: n4 d
#4 A+ [" e3 a% Q$ C" o7 A% i
# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
1 @' O- X' |/ \% f$ Q8 u4 |+ f# method to control access instead.
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+ d+ `( G- ?% w* P- I) H9 p$ z# NB: This relies on the use of the 'Origin' HTTP Header.9 e2 N( ^2 |# f4 g0 d/ H; t

6 n3 a1 l' t) \$ klocation / {/ n! o' i, \+ H, m% p$ j
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if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {, d3 F/ _7 Q$ v% M; Z
      set $cors "true";- T' b) l0 K6 G( G, X7 M9 {
}
' R9 x! U* B% o. i6 v* d6 j2 {8 M! X/ {3 N
# Nginx doesn't support nested If statements. This is where things get slightly nasty.
& Q. B# }% V. g3 {" _2 ?4 G! S! S # Determine the HTTP request method used$ ~( \+ u+ L! L. w- a8 h
if ($request_method = 'OPTIONS') {
0 U4 j" P2 ]9 r, ], m7 t* H/ l% B       set $cors "${cors}options";
# @7 H, P; k3 U% V5 @ }1 k. p) q2 Y2 ^# m
if ($request_method = 'GET') {
: Y6 h9 K6 _8 V9 J- s       set $cors "${cors}get";  r  ]  O- M, x! V
}2 x3 Q% Y/ v3 l  H1 y6 X# f  `
if ($request_method = 'POST') {! X# @7 }: K' m. j# Z# z
      set $cors "${cors}post";
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% ]: j7 m7 S* D6 r4 }' Q2 |
if ($cors = "true") {( T7 t% u6 {  U$ M3 |) q
      # Catch all incase there's a request method we're not dealing with properly, X* G$ O0 C- I+ b7 J) N
      add_header 'Access-Control-Allow-Origin' "$http_origin";8 C8 u1 ]2 b) Q% r, V% S
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if ($cors = "trueget") {; _) b9 v: x* R3 t7 G$ c
      add_header 'Access-Control-Allow-Origin' "$http_origin";
; N9 q+ Q0 X1 ]& @( a+ {       add_header 'Access-Control-Allow-Credentials' 'true';
9 M4 b, m1 B' ?( K, M# c       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
- ]' r/ u7 m" p1 \* z3 B, [       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
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if ($cors = "trueoptions") {
/ |9 ]( n6 Q; d2 E4 {       add_header 'Access-Control-Allow-Origin' "$http_origin";
2 d1 o9 |! Y2 S8 a, X
, f; }3 |5 i; u  X- Q2 K       #
6 U: w3 W+ _+ W& L( ]8 T5 P       # Om nom nom cookies" K7 i4 o1 V8 N, B% @
      #. C: @* U) q& x4 a; d1 W, @4 D
      add_header 'Access-Control-Allow-Credentials' 'true';/ L$ m# p! |( n) `& i! {
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
/ D" R- }7 c7 V. e# X9 a  D
3 C, {3 M! v( |       #
& _5 r' |" B0 ]6 F% F' l; e/ N5 m/ r       # Custom headers and headers various browsers *should* be OK with but aren't
6 r+ z0 H1 v0 H% ?- ^       #
* u& c7 V0 G3 f$ O3 c+ i       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
3 C2 I& k: G/ G3 z0 f& ?6 `; x5 `9 b) t$ @2 i3 K6 Z& F& f, l6 E
      #3 a5 I& R+ Q. J$ l6 a
      # Tell client that this pre-flight info is valid for 20 days5 n( {/ Q' k8 U  V! d5 X& T
      #
& n/ H* S' `3 }3 t       add_header 'Access-Control-Max-Age' 1728000;5 Z0 Q( r' }. c
      add_header 'Content-Type' 'text/plain charset=UTF-8';2 D: D, f8 r9 p& `" d( H8 H3 p! e! }+ Z
      add_header 'Content-Length' 0;
2 z0 N3 z* I5 A7 m! ?0 t3 s: [       return 204;
9 O( _% n" i% x, X4 d2 G! _7 ^, } }" k- t: h! u8 J5 ^' x

" K* N( i) \$ t4 o8 V+ Z+ \: @2 b if ($cors = "truepost") {, C/ P) v: A2 Y/ l' r% j
      add_header 'Access-Control-Allow-Origin' "$http_origin";) p- S4 F3 @" m: U. X9 O% a
      add_header 'Access-Control-Allow-Credentials' 'true';3 |( t4 }& ?5 E& T- S0 K
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
4 |! B& L( P2 L2 d       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';4 B3 f0 i( Z8 T( P7 q
}
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}