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
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# One way to use this is by placing it into a file called "cors_support"
: m2 o4 J1 i# x/ }+ |# under your Nginx configuration directory and placing the following7 S" n1 E: f2 m; u8 V' I
# statement inside your **location** block(s):
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0 n5 J/ o8 @2 g7 M3 B# include cors_support;4 _( Z" \' S2 S1 T7 E
#' N3 \* j3 x- g7 n$ Y5 e' Y
# As of Nginx 1.7.5, add_header supports an "always" parameter which+ Q. C( D! z9 B) l# H; F
# allows CORS to work if the backend returns 4xx or 5xx status code.9 e1 a# c( H& f& E4 v
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# For more information on CORS, please see: http://enable-cors.org/
/ p$ K0 Z9 G4 i2 p6 y/ N$ [# Forked from this Gist: https://gist.github.com/michiel/10646402 A+ |, g5 ~7 c5 l- [
#
' X( \! F- R, o7 {
9 s+ P  `0 `( M' K  x6 rset $cors '';
1 L9 G# P( z/ w5 I: M! I: iif ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {5 _/ i9 w( X* q% |& f5 ~* a$ C
      set $cors 'true';
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% }' `7 P  [; ^/ D* uif ($cors = 'true') {
9 j2 [: M5 o. a3 s, @) N       add_header 'Access-Control-Allow-Origin' "$http_origin" always;# F- ?9 \' Y+ P" t+ _( q. Y4 |
      add_header 'Access-Control-Allow-Credentials' 'true' always;
- F& O4 o6 _6 k' i  q% {4 g       add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
8 H# [* w0 J7 Q+ w! b       add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;
% P- E6 W% {  ]" ^) ^' @       # required to be able to read Authorization header in frontend
: w* F" o; J# A       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
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if ($request_method = 'OPTIONS') {. r' P- G( q! Z# v8 \+ M) f
      # Tell client that this pre-flight info is valid for 20 days
5 c* C/ n  R- g( u: a0 C6 D       add_header 'Access-Control-Max-Age' 1728000;: ?9 o  C( f3 e& R+ o$ A; R
      add_header 'Content-Type' 'text/plain charset=UTF-8';
; l. v4 J4 `5 i  d3 l% G% F/ Z       add_header 'Content-Length' 0;& @6 Q0 {* U7 O
      return 204;
3 l" N. b7 @% x0 `+ ]}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;  J  u" |2 W3 \" G3 h0 E
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set $origin $http_origin;
& i- S' v% C+ e3 }& h2 W1 G' Zif ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
7 V( b8 f' p& {$ _/ V8 F# [+ Y    set $origin 'https://default.yourdom.zone';
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if ($request_method = 'OPTIONS') {
/ T# f$ H2 e. _, v: W7 L) q    add_header 'Access-Control-Allow-Origin' "$origin" always;
5 ?" n# Y0 M# R7 u    add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
  ^' Z- j+ C9 y$ n1 @    add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;  p* c/ U$ Z& D0 N, b9 R, l3 n2 j
   add_header 'Access-Control-Allow-Credentials' 'true' always;6 A: s& C+ I4 Z. n" r8 b. s
   add_header Access-Control-Max-Age 1728000; #20 days
% G5 U: N, ^0 c" Y, B5 A6 P7 N; D5 ^    add_header Content-Type 'text/plain charset=UTF-8';
: @' D, d. \& L    add_header Content-Length 0;- e1 h4 _2 Z, R9 Y% Y8 [# t
   return 204;
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if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {2 @7 i9 W  I: H* f- ~4 H# S
   add_header Access-Control-Allow-Origin "$origin" always;7 W" W/ @: Z+ ^6 r& M3 x9 ]9 @
   add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;. L/ u, e6 y) h; p) x
   add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
, G3 }% m; p% ]+ e; p    add_header Access-Control-Allow-Credentials true always;
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# based on https://gist.github.com/4165271/4 u! C6 C2 ^3 Y' z- x3 I9 J. x
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# Slightly tighter CORS config for nginx8 a: {2 r* F' n% j' I6 r! V
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# A modification of https://gist.github.com/1064640/ to include a white-list of URLs$ x7 y% g. Z. t. a& g/ ?
#
. V7 q/ K6 ]  z& n& [# Despite the W3C guidance suggesting that a list of origins can be passed as part of0 q4 N0 L% u: U7 V6 N* p9 P
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
3 A) y& k9 D6 e7 n# don't seem to play nicely with this.
' C$ \1 Q0 b) Z) \% u2 M#
5 t7 I3 g& K, [- u! P: I! A" j2 b# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
5 h5 g4 {4 H% j4 \# method to control access instead.
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# NB: This relies on the use of the 'Origin' HTTP Header.. C* R2 g: u, U6 q; }

; Q7 T1 F1 Y: v! \9 V, T" j' rlocation / {. M5 h. w; B! j7 {, t9 y* ^
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if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {
5 N# E5 {$ N! W' T" L       set $cors "true";5 P' z: u" I' t  e
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# s0 y1 j7 A2 K# T0 e' [1 ` # Nginx doesn't support nested If statements. This is where things get slightly nasty.
8 P9 V4 n( R4 N # Determine the HTTP request method used: A% K3 j- l: W; P9 D+ D
if ($request_method = 'OPTIONS') {9 U9 r2 h# V  O+ x
      set $cors "${cors}options";% r3 n& I- N& }: B. s, _8 x' E
}
0 p1 A/ V. I; _' [. J$ U) I' D if ($request_method = 'GET') {
& ~! _" Q. X9 k1 }       set $cors "${cors}get";
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if ($request_method = 'POST') {
" t; y+ D- O9 C( X       set $cors "${cors}post";
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if ($cors = "true") {
: Z( j2 U2 m9 T4 _0 G7 o       # Catch all incase there's a request method we're not dealing with properly2 e  y, V4 |! \2 m# U+ Q" r0 V$ B- l
      add_header 'Access-Control-Allow-Origin' "$http_origin";  s9 t; c" R$ c" a
}
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! T9 H) g' [, D if ($cors = "trueget") {
8 Q) ^" P2 r# B1 {       add_header 'Access-Control-Allow-Origin' "$http_origin";
& L- G% v0 m/ ]! j       add_header 'Access-Control-Allow-Credentials' 'true';
; P* Q  I9 }2 d  D6 g9 j& W       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';5 L# ~' t% F- c# J7 Z! `- u
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';0 \* r5 a! n; B
}  u" B: O! R$ W8 e& N4 b

# W& M& h& F6 S- V if ($cors = "trueoptions") {
$ h* W: \4 b- O0 l( g2 C' \- `       add_header 'Access-Control-Allow-Origin' "$http_origin";
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      #
5 b" c9 Y) U9 P       # Om nom nom cookies
& V6 h$ J  e) I/ B4 D$ v       #
; G4 h& t" W9 O4 [* l       add_header 'Access-Control-Allow-Credentials' 'true';
, L- x7 @4 {: j- \/ K       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
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# R1 m3 S( z8 w2 ]8 g1 \# `! O       #, v! @; N  _% @3 L! v' Z
      # Custom headers and headers various browsers *should* be OK with but aren't% \- @( u2 I/ I/ @5 S8 C  g1 W
      #; l: T' {' y) ]7 J' r1 y
      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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      #$ }  A' w/ R- f5 T  h) L: R! e0 }
      # Tell client that this pre-flight info is valid for 20 days& i, V; _5 I: w/ K: }$ }. t
      #- G6 S0 t8 G$ C
      add_header 'Access-Control-Max-Age' 1728000;" R% u1 o" R- Y6 g2 @& |7 Q% C
      add_header 'Content-Type' 'text/plain charset=UTF-8';
) a$ j$ F& X  X/ l9 W7 E       add_header 'Content-Length' 0;
2 }7 L3 q5 ~, T# @$ f       return 204;- ]* w! g. H: R" r; @1 b. Z: O" O" N
}
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if ($cors = "truepost") {. x1 m  E, ~: {8 r3 G9 }
      add_header 'Access-Control-Allow-Origin' "$http_origin";" [, r) Z9 }! R% i# a" o/ I" R
      add_header 'Access-Control-Allow-Credentials' 'true';
; \, ]* w6 i. N$ I# T: Z* n       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
) G1 J2 r, B/ q5 w, t       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';' K& q; I+ M& k( ]  P( t
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