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 support1 o8 d# U% Y% z  {, y& _, d& Z
#; b( m8 t! v& L5 o
# One way to use this is by placing it into a file called "cors_support"
# b4 C7 Q, W- r, s/ L# C# x8 c# under your Nginx configuration directory and placing the following/ ^3 H8 a+ t2 _/ I+ A1 I
# statement inside your **location** block(s):
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# include cors_support;8 D% ?; S  k! b' n1 B; t
#
( x: y/ ^+ ^8 y; c# As of Nginx 1.7.5, add_header supports an "always" parameter which# X- ?" I4 R% q7 Y+ u1 G
# allows CORS to work if the backend returns 4xx or 5xx status code.! @+ V  V9 e; D! R9 e
#
5 [! U5 i0 U* f& p6 s7 k# For more information on CORS, please see: http://enable-cors.org/
: B% U# ~5 \! F1 F+ D) z5 ?2 h7 @# Forked from this Gist: https://gist.github.com/michiel/10646409 ]/ m1 L3 [  D* n. x
#
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set $cors '';
4 a! F. Y6 k9 A$ E1 s$ a& D3 Eif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {
/ b) R3 k/ ^+ c3 A& K) h& B; b       set $cors 'true';
; B( V9 u6 K) ^}
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if ($cors = 'true') {
3 M; |  W4 p9 ?; B: b       add_header 'Access-Control-Allow-Origin' "$http_origin" always;0 v( D! D9 Y- M% ~: ^# ?
      add_header 'Access-Control-Allow-Credentials' 'true' always;1 v2 V) I. j& P2 A- \
      add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;  y  [" ]9 x1 [  W$ x& 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;
& M- u% t% E9 K, y7 J$ z7 a5 X, {       # required to be able to read Authorization header in frontend
& }: \) ^- \! I9 d$ v2 `       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
! u, C: y) [0 ^}
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if ($request_method = 'OPTIONS') {( K- Z( C- I9 y1 l
      # Tell client that this pre-flight info is valid for 20 days
1 t& {; o2 I. f+ s2 @5 a6 w3 _       add_header 'Access-Control-Max-Age' 1728000;
2 q1 |  ~7 C) c7 D* ^$ q! Y1 |       add_header 'Content-Type' 'text/plain charset=UTF-8';
! ~# d- i" y; a       add_header 'Content-Length' 0;
4 a$ e4 T( @* X6 x       return 204;& Y3 T0 s# l2 L/ V) \
}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;' l* g+ y- g) J* O8 c
}
, y# [2 d) ]- A1 ^. Yset $origin $http_origin;
" ?9 ^/ B/ ^0 o1 r; r+ wif ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {3 a) @+ |% S' y' U+ Q5 ^" v4 {
   set $origin 'https://default.yourdom.zone';. m- A" Q" O2 |4 r
}
1 G1 s1 J9 }7 Rif ($request_method = 'OPTIONS') {
; B9 q" S9 H. e  D0 w    add_header 'Access-Control-Allow-Origin' "$origin" always;
# V) j; L, u8 @9 N1 C- j6 e    add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;8 r7 `) q: E8 f7 A
   add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;
$ d% [& A! m1 F. R' I$ Q$ u    add_header 'Access-Control-Allow-Credentials' 'true' always;% s; u" c! W' x3 ]5 r
   add_header Access-Control-Max-Age 1728000; #20 days * [6 w4 X+ w+ q+ j0 ?% {& W
   add_header Content-Type 'text/plain charset=UTF-8';. V' M: W% x& d" c
   add_header Content-Length 0;
8 V5 N- s- F8 [, ?    return 204;
: B. N' m- ~( g/ h8 P}
* R( Z" Y8 H* ^2 ^if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
1 {+ z# n" v& G; X' @$ w( U    add_header Access-Control-Allow-Origin "$origin" always;
$ `7 D( k' J* Z& _    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;+ M* U) b  a3 A6 ?/ I) c9 f' T* a7 Y
   add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
" w6 w0 x# q- j6 j( v    add_header Access-Control-Allow-Credentials true always;" E* ^4 i& e9 e% |/ d4 S- u, \5 f7 a
}

# based on https://gist.github.com/4165271/% |( j& J3 v: z
#. T5 k/ f. E& |
# Slightly tighter CORS config for nginx8 l1 y( N- F0 E: d: m# o* [
#
" b0 M+ G. L9 v# A modification of https://gist.github.com/1064640/ to include a white-list of URLs
% o* s1 ^9 j$ e% ]#: `: E& r. ^5 N8 p! I7 f: z& [
# Despite the W3C guidance suggesting that a list of origins can be passed as part of- ~2 V' Z  a7 R. j1 t4 V! ^
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)% U) h; d0 X4 D3 I& ]
# don't seem to play nicely with this.. t% J- g. C: j9 g  n1 @
#6 N# d/ m0 {: m. a
# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
, G. x1 m5 O# Y9 R; o/ Q5 y) P# method to control access instead.( L/ e7 [9 D/ }% H. |
#
; I9 `! Y4 Y' M! P9 L; d6 f$ G* y$ ^( A# NB: This relies on the use of the 'Origin' HTTP Header.
* M" y( K7 J1 \+ s3 B2 r+ E  l/ `8 k& q: n
location / {
) t0 }- ?3 o. K1 z% I! p2 @" U0 F7 {( }/ w  M
if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
1 r" b7 T! x8 \6 `       set $cors "true";
8 `* e& ?- F" G* a( t }. V6 V7 {' W/ J( {1 y! \% G& O8 z
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# Nginx doesn't support nested If statements. This is where things get slightly nasty.) D$ Y' d( U( ~% }8 u! A
# Determine the HTTP request method used, a0 [# w3 O$ _
if ($request_method = 'OPTIONS') {( L, u5 X- L( Q& ?3 G
      set $cors "${cors}options";; }" b) Z/ ~/ L5 X+ s4 B
}8 X; _  |4 M( [, d+ r
if ($request_method = 'GET') {
. f6 h* J8 t8 F7 i- ^       set $cors "${cors}get";
7 V- q: H7 ^* J7 s) M3 z! d: ?2 r }4 E6 p0 o4 D$ t6 O, {% \) G
if ($request_method = 'POST') {
9 d8 y. w* W7 Z; e2 H- `       set $cors "${cors}post";
! A) U$ h% |/ _) M* N }" |- u# k9 z+ M3 _4 L

, x$ x( k& M+ T2 u$ @5 e' w: S+ a' m& g if ($cors = "true") {: q& }4 a* i( I9 E; b
      # Catch all incase there's a request method we're not dealing with properly
2 R$ r& l. R1 `/ Z3 C4 L/ I       add_header 'Access-Control-Allow-Origin' "$http_origin";
9 ?/ Y/ k8 n9 ^6 ` }
3 s! N: B% A$ V0 ^- A9 W3 d  B5 y! k/ Q" M. A6 t) Q
if ($cors = "trueget") {
( W6 _7 [0 x' f4 U) p1 E       add_header 'Access-Control-Allow-Origin' "$http_origin";
6 C8 h  q. [. f% B# H! k       add_header 'Access-Control-Allow-Credentials' 'true';
9 Y6 u7 \% B2 Z0 ]6 {1 G) h. H       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';( T2 l* O, q3 R  W$ A
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
1 A/ B3 G! A7 [. K/ k }
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% s; X4 [& w- _ if ($cors = "trueoptions") {/ ^- S: @4 u7 G8 L. O4 I% G: c1 `
      add_header 'Access-Control-Allow-Origin' "$http_origin";
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8 A1 P) f, a5 A       #2 }& W' w* J/ U+ x
      # Om nom nom cookies/ J: ~& L  Q/ u0 C
      #
5 \0 r1 Z6 ~9 x5 G       add_header 'Access-Control-Allow-Credentials' 'true';
8 B: j! Y! l8 B4 v- n8 m1 R       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';8 M- e) h9 u8 \' K' \2 Z, o) m
5 V) g4 j5 l. n
      #3 A! f+ M: |  ?6 n# b$ e' o' X9 D
      # Custom headers and headers various browsers *should* be OK with but aren't! p  ~( ~% |) w; \
      #
: D* ]2 e0 [( H, d/ y* Z       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
4 e, b6 X7 T% V1 k4 _, z$ ~3 b4 {7 f' F4 N4 T, a$ d/ p" z: Q
      #( z0 d( R2 U' `+ M# r' s  b: `
      # Tell client that this pre-flight info is valid for 20 days
$ v  ]0 ~/ ^& v5 V( @       #
  T9 Y; g6 o) c% d2 |       add_header 'Access-Control-Max-Age' 1728000;$ g0 F$ }$ i' B# {
      add_header 'Content-Type' 'text/plain charset=UTF-8';
; h) H" {+ s, |: f9 I# ^       add_header 'Content-Length' 0;
! e- D- O% o5 _% T$ \+ M7 W       return 204;
! v* i! t! H6 a2 G }( y+ c0 {$ x( Z! d5 l

+ E4 z, v/ L  I* E if ($cors = "truepost") {8 U8 i8 J$ K3 k* U5 ^+ ]# d
      add_header 'Access-Control-Allow-Origin' "$http_origin";
6 U  h# c5 w+ R       add_header 'Access-Control-Allow-Credentials' 'true';
7 A9 {/ g# e$ `7 L6 p, E/ V5 Q7 _       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';, h$ o/ N& Z& S% _
      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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}