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' B+ N. o3 \8 F+ g5 Y2 X1 j  a8 A; k
#! \, y1 N. @: I
# One way to use this is by placing it into a file called "cors_support": C9 z- m6 M! t2 X4 a" J* R% l
# under your Nginx configuration directory and placing the following( {& T& S& S# d5 W1 z' c
# statement inside your **location** block(s):* w6 m2 e* ?# h
#
. b6 D4 O; {/ a6 j/ ?: s* c# include cors_support;- m3 ?2 _9 C8 }, J
#( X' E' F# n) L( s) M
# As of Nginx 1.7.5, add_header supports an "always" parameter which8 @! j7 d4 m. w; w  }5 `8 ?% [" G
# allows CORS to work if the backend returns 4xx or 5xx status code.
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# For more information on CORS, please see: http://enable-cors.org/% ?2 P) Y2 s& K) v7 K
# Forked from this Gist: https://gist.github.com/michiel/10646406 T) b* ^  ?. Q+ x* Z
#
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set $cors '';
- {# ^, N# J" x& V" u6 j+ Rif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {2 A5 K/ T' }  T9 u2 I) _' @5 w. X7 s
      set $cors 'true';5 l- a# A9 c6 \6 ], c, t6 {  X% [
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if ($cors = 'true') {& B' U) v) G8 J- ~
      add_header 'Access-Control-Allow-Origin' "$http_origin" always;4 B# p; Z3 i; ^7 [' G
      add_header 'Access-Control-Allow-Credentials' 'true' always;" ^! p4 ^1 ~$ q
      add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;! V9 ^! N* M3 r) x
      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;
$ P! @* Q9 Y2 J' ~. X7 _- I       # required to be able to read Authorization header in frontend
' n& K% [# _( U6 M: ?2 b' t       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
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if ($request_method = 'OPTIONS') {
! ]- n* }8 Y  o       # Tell client that this pre-flight info is valid for 20 days$ e6 A2 p6 N/ e$ W
      add_header 'Access-Control-Max-Age' 1728000;
$ X& B3 G) Y9 {0 z7 V( [& _& j       add_header 'Content-Type' 'text/plain charset=UTF-8';2 I2 [; ~; O; B; y
      add_header 'Content-Length' 0;
; C& d: q1 G" t* C+ o8 ^6 @6 z       return 204;! u8 {- g( s# a
}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;+ c% C" j; A# A9 \
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set $origin $http_origin;
5 a# @3 C, f( t8 ]if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
5 [7 g8 r( k1 Y/ V0 L8 s    set $origin 'https://default.yourdom.zone';
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if ($request_method = 'OPTIONS') {5 U6 N2 ?' r( o
   add_header 'Access-Control-Allow-Origin' "$origin" always;4 t% d6 ?2 R6 F! R/ h
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;: y; y6 Y- N1 ]3 p
   add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;4 g$ o" l: Q* o( m3 u
   add_header 'Access-Control-Allow-Credentials' 'true' always;1 _& }- i/ s5 a- Z' l# k6 V, g8 @
   add_header Access-Control-Max-Age 1728000; #20 days
, X; M! ~# O* H# H5 }    add_header Content-Type 'text/plain charset=UTF-8';
2 e$ m, _5 P5 p9 k  Z    add_header Content-Length 0;9 ]; w0 t' {9 V  X8 x0 P
   return 204;
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if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
2 x4 M* H" d+ S" x* ~! l    add_header Access-Control-Allow-Origin "$origin" always;
) X. [' p8 U5 V) P1 Y( C    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;$ {, K2 V+ F3 W5 W3 E4 ~
   add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
. r) m0 J1 e: r1 s- `    add_header Access-Control-Allow-Credentials true always;
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# based on https://gist.github.com/4165271/
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- h0 P/ }! l3 Z5 r8 T, a' J# Slightly tighter CORS config for nginx& Q- W4 b* t. J$ }+ U( ?* f' V
#8 {7 n7 Y/ ?/ U" f9 H7 D& G
# A modification of https://gist.github.com/1064640/ to include a white-list of URLs
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# Despite the W3C guidance suggesting that a list of origins can be passed as part of! ]* F8 E& Y( o
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
$ w* ^* S! i- J4 T7 G2 d+ c/ r# don't seem to play nicely with this.
: G! K7 U3 E4 Y8 y& @#
! G5 d/ {$ Y1 v" v; ?1 N$ O' ?  p# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
4 P5 Z  `6 }) z: n# method to control access instead.
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3 I. X" n/ o+ D+ @+ v# NB: This relies on the use of the 'Origin' HTTP Header.8 c  Y  g1 ~1 y

" o' d7 Z! D. A  u& ^location / {
% O2 [- t2 O- V% v) w
! \' J3 h# s* \7 f if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
7 Y1 t6 X: N7 P  m# l6 s: h1 T3 y       set $cors "true";1 `5 Q3 b) H7 F+ a- d) H3 Z( a
}
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# Nginx doesn't support nested If statements. This is where things get slightly nasty.
7 }7 T8 s) ]3 n+ V0 {) ` # Determine the HTTP request method used
' |5 F7 n' L7 H; Z  N if ($request_method = 'OPTIONS') {; x" I* Q# V! {& W6 j
      set $cors "${cors}options";
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if ($request_method = 'GET') {! `  Y3 X* f# Z2 }# m( t3 {# c8 F4 r
      set $cors "${cors}get";
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if ($request_method = 'POST') {+ b6 U% e! |; Z3 M: V2 J6 H% X
      set $cors "${cors}post";
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if ($cors = "true") {) g: p: K7 u6 Q0 T, k
      # Catch all incase there's a request method we're not dealing with properly$ o4 R4 @( t* }6 t' @  I
      add_header 'Access-Control-Allow-Origin' "$http_origin";& o; S6 D+ O: o9 ^; w6 a
}  U0 R* R$ \, N, P/ U

5 F4 ]- d. |! b- B if ($cors = "trueget") {
1 A6 d  \/ X2 u9 V% ]       add_header 'Access-Control-Allow-Origin' "$http_origin";
* w- V) m7 L' r; {4 i. s3 q- `, m( O       add_header 'Access-Control-Allow-Credentials' 'true';
# d* O% U& c: r. F6 d- ~       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
2 U( k, t" ^) `" w       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 ($cors = "trueoptions") {
0 K2 H6 U& K) u       add_header 'Access-Control-Allow-Origin' "$http_origin";* U8 H" B# p: i! _6 ?
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      #4 x2 ]" H! S8 A3 ?5 Z8 i
      # Om nom nom cookies
6 O! n) w  |; q5 }' O* ]       #
+ c8 m6 f) ]9 h7 q  p. d       add_header 'Access-Control-Allow-Credentials' 'true';
# |) n, G5 l+ }$ W       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';, j1 L* u7 p- r3 S6 _* L+ B
. y& d- z0 V1 t. O0 t: \
      #
. ?: K% e- G6 W       # Custom headers and headers various browsers *should* be OK with but aren't& T1 r, Z) k' K/ E5 p( @5 o& b
      #/ g$ O# O# N% h  r) y9 W' n  k  `
      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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      #
+ b& y/ }  B- z) W       # Tell client that this pre-flight info is valid for 20 days( p  ]% X: `8 C$ e- g; l
      #
: X3 ?# i  P/ t. k; a! \# }% t/ N       add_header 'Access-Control-Max-Age' 1728000;
3 [! ^! L8 M: z0 b- X7 \( {       add_header 'Content-Type' 'text/plain charset=UTF-8';
5 o/ i% ?  G* b+ Q       add_header 'Content-Length' 0;
0 b, j. V' V9 o4 K9 G       return 204;; p7 D+ y3 Y3 N1 T6 i9 Y
}
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% M; n8 ?: k, m6 |) Q if ($cors = "truepost") {5 G6 l$ e, P( }3 J0 G% U+ g
      add_header 'Access-Control-Allow-Origin' "$http_origin";
, ]2 ~5 @; q2 b7 f       add_header 'Access-Control-Allow-Credentials' 'true';
7 c6 k; U! F* V9 y" i; Y       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
" a  X& i+ y* E9 J% x       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';9 P6 T! }  ]7 G1 z( q/ X6 \$ Q; I
}
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}