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 support4 w: o) w* c4 c7 U3 c! I
#
6 y, ]9 W+ y, Y6 [- B5 F+ ~# One way to use this is by placing it into a file called "cors_support"' V( |/ {4 Y5 I0 ?' J7 ]5 K6 z& P- k
# under your Nginx configuration directory and placing the following
. s( @! E9 M% l- i5 q6 S9 ]( A  W( x# statement inside your **location** block(s):  Q% ~; N8 c% X) k! ?$ q& d
#
, ?/ U: v" ^; h& D# include cors_support;, z6 V! |- r4 }$ C
#2 q; a8 V7 r) f" z2 M7 p
# As of Nginx 1.7.5, add_header supports an "always" parameter which0 M8 z4 l! h0 N
# allows CORS to work if the backend returns 4xx or 5xx status code.! b2 _9 ~$ ^9 F
#) C1 W; O% M6 W9 B7 H3 R) [. @
# For more information on CORS, please see: http://enable-cors.org/
9 {/ x0 a0 |- o# Forked from this Gist: https://gist.github.com/michiel/1064640
( V1 k* G: T( Y0 ?6 p$ y#8 A( D$ F4 J' B# @

3 L+ W5 S0 }1 N- G, d! `/ q7 V) w; Xset $cors '';! G. z! H- z, u2 J6 g+ c
if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {
( I6 z  b6 Y9 E       set $cors 'true';
3 y; _  g5 W  W5 n}
- q) a+ e& R! g# T. {
: O& R8 Y- |! e8 b$ iif ($cors = 'true') {
2 Z" u& z! x# K7 Z+ V2 n       add_header 'Access-Control-Allow-Origin' "$http_origin" always;' ~7 ~: P% s5 ^4 x, k
      add_header 'Access-Control-Allow-Credentials' 'true' always;$ [. z/ m9 s* x5 h8 ]( m
      add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;6 }4 u4 D, G' p3 n: m8 z
      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;
4 t8 D* g, D5 i7 g1 E       # required to be able to read Authorization header in frontend
5 I" i, u7 L% v       #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
3 r  H: t5 |1 w% d; D  `}
* e. X4 V# I7 U/ c# S
3 R/ F1 n# A& N8 v7 O- F$ rif ($request_method = 'OPTIONS') {8 R1 W& P' x& q3 ?( Y
      # Tell client that this pre-flight info is valid for 20 days$ h' I9 h) k4 ?2 n# {4 O
      add_header 'Access-Control-Max-Age' 1728000;
* b! K9 m' }) q) Y7 [- Q       add_header 'Content-Type' 'text/plain charset=UTF-8';
+ V8 l: \+ H4 ]% F$ J! C2 Q" _       add_header 'Content-Length' 0;) e% E4 o; X( n) W
      return 204;
1 K; `! r! o. K# {2 s}

if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) {    return 444;* r$ R/ x5 Q& ]( A) f
}% I; ]# M1 I) e- h7 b  q
set $origin $http_origin;! L$ \6 d8 r" |9 r) v" |
if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
% a* D, z8 v$ m1 ^6 e$ I    set $origin 'https://default.yourdom.zone';
- ]4 R; L. Z/ J. v) r}
7 ~7 P, J5 C: G9 Yif ($request_method = 'OPTIONS') {
, g6 q; A& c& w    add_header 'Access-Control-Allow-Origin' "$origin" always;; S; F7 [. l1 j! e
   add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;6 z* z, s5 b9 b7 p
   add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;
7 Q1 g2 ?8 G9 f9 S% T/ B; Z    add_header 'Access-Control-Allow-Credentials' 'true' always;
% h, x* `. X5 \+ f. e: C    add_header Access-Control-Max-Age 1728000; #20 days
) Y1 C2 d4 p* u: `# f& |    add_header Content-Type 'text/plain charset=UTF-8';
  Y4 i3 ]) @. d' G, O    add_header Content-Length 0;; E. i  p* k! E' \8 _7 D. U
   return 204;' E8 ]' u! Y! ^6 s" V. {2 r, n
}
# {& Q7 f# n* g4 v/ C) l. \  n( O6 [if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
3 k# }( v% [' ~" i7 m6 l: a    add_header Access-Control-Allow-Origin "$origin" always;
6 C: Q- }/ {2 p+ S$ N8 ?, ~    add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
% G! q. Z' ^( u8 k- [: r    add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
5 k/ @! k: r3 Q" C& u. J7 d    add_header Access-Control-Allow-Credentials true always;
2 G+ a: Q2 w8 X: O5 V}

# based on https://gist.github.com/4165271/3 x) y6 m% E" g- `9 C. F9 P' ]
#9 S9 U! F1 ~( T; `
# Slightly tighter CORS config for nginx* D' A6 D: m4 s/ H: N. w, u
#$ Q) i7 n6 h1 k! L- Y7 I0 l' V) }4 u
# A modification of https://gist.github.com/1064640/ to include a white-list of URLs; ^* [+ n) A0 c7 x2 Z  j
#4 b( d7 N5 i9 U) t, ~3 Z
# Despite the W3C guidance suggesting that a list of origins can be passed as part of0 g3 i* S8 _# S8 `& X
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)( q& C; J. l1 s% s+ ^: |* }
# don't seem to play nicely with this.$ ~" g7 \7 q" N* D
#
2 O7 @7 H- B5 h. k  X# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
; D/ m& ]# c! X: }, A) x# method to control access instead.0 W3 h( v9 @* t  V- C) x) l' Y+ _, S
#5 t  {6 E( w. Y0 z# a, ]
# NB: This relies on the use of the 'Origin' HTTP Header.# P  ~' ^0 i3 O/ P

" A2 o5 a8 C; N& |1 o; Qlocation / {
/ J. d) M$ H+ H; ]$ ~. c7 z8 }2 j4 ^* O# G9 z
if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {# l' @8 O! J7 ]0 ~* E7 S
      set $cors "true";4 n# t" Q! E) A' q
}
# }1 A  \1 F) n3 `1 G6 `9 A, }6 C' I  n
# Nginx doesn't support nested If statements. This is where things get slightly nasty.
) K2 N% L8 c5 z, k; s # Determine the HTTP request method used
: l& Z; G$ u( @& \- T0 n if ($request_method = 'OPTIONS') {" s4 Z& a3 C9 z) X) _3 B  a- k6 N/ o
      set $cors "${cors}options";. z6 A6 J* ]  t; b4 N: ^% H/ ~
}6 F/ r* i+ M& M& u: f$ |6 T
if ($request_method = 'GET') {7 Z1 x  f( I7 x7 o$ ^$ J
      set $cors "${cors}get";
5 `, V1 U+ k) B! d; G, m: ?/ H6 ? }
' S5 K2 s" a9 N/ P, D if ($request_method = 'POST') {% j8 t) o8 F4 a
      set $cors "${cors}post";8 k, g$ b4 j( _+ k3 x7 S: x) v+ P; Q
}
* x3 P6 O8 f# a3 \8 T8 U2 C9 J' t) j6 l" b
if ($cors = "true") {
6 b. \# p' T3 C' t, \" N: @: l       # Catch all incase there's a request method we're not dealing with properly
6 h8 M  z; W0 ?9 a8 s- J       add_header 'Access-Control-Allow-Origin' "$http_origin";
0 e- l# R/ l5 ^. n' R% _% q8 u* v$ B }' S$ ?0 Z; N# g% T

. k3 B. }. T) R7 A, p if ($cors = "trueget") {+ s' `5 \8 E. s. q& b0 y$ E- ]
      add_header 'Access-Control-Allow-Origin' "$http_origin";( W" w" e, n# W! V2 g
      add_header 'Access-Control-Allow-Credentials' 'true';
% ^9 {' Y- I* v3 ^$ u! a       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';5 j! l: F1 a; a& N
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';7 D& h6 ^$ C4 {! Q% d5 w0 q
}
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if ($cors = "trueoptions") {( h5 n$ U' @- D' N- {  {
      add_header 'Access-Control-Allow-Origin' "$http_origin";; L, V  b( h4 D8 N

) E' `' L; r* t9 D, \& s       #
0 ^$ P1 D: V9 Z       # Om nom nom cookies
0 w- W( H; i% c  x& D  ]5 i       #
$ P- W( R7 Q  c' M       add_header 'Access-Control-Allow-Credentials' 'true';
& L6 }( [! B( ?1 a3 g0 i4 Y       add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
/ g+ {/ j0 v2 P" Z7 r. x
* U. B) y  [! Q" P/ E& y       #" ?- c1 o9 c3 D# C
      # Custom headers and headers various browsers *should* be OK with but aren't$ \6 G. g$ R. [! s, L4 A
      #7 z% r2 F# c- ]5 [
      add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';( d8 x! u, Q: P8 l

3 X4 P; `- D/ ]. r" Z       #
: s4 K  X0 ^: M2 P       # Tell client that this pre-flight info is valid for 20 days
% \; o& Q0 b/ g7 d$ H3 m5 z! u1 F       #
' Y6 ?5 P4 O% m1 L6 u       add_header 'Access-Control-Max-Age' 1728000;
+ h/ _- J; y% o* _+ B9 R4 H+ ~       add_header 'Content-Type' 'text/plain charset=UTF-8';" N" a1 Y- w1 W% t1 V0 m
      add_header 'Content-Length' 0;
4 `. S4 H) l7 N2 ]. @' L. |/ o       return 204;
% ?7 n# \! i& R6 w" [: e }
7 _9 ^( z' q* G4 D" s. o) v2 {
  k& Z  }2 G+ R/ j2 n$ N" C if ($cors = "truepost") {0 M0 q& X) ?* m  A  X
      add_header 'Access-Control-Allow-Origin' "$http_origin";1 f/ H6 Q( Y$ T' U
      add_header 'Access-Control-Allow-Credentials' 'true';3 g- X* r5 u7 t2 ~7 Y* \
      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
0 ]/ A5 A' R- V- Q! n       add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';* R$ f0 H: A8 ^& Y
}
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}