# CORS header support
#- ? Y5 V0 I* X4 h
# One way to use this is by placing it into a file called "cors_support"/ U# G0 ?1 R* C
# under your Nginx configuration directory and placing the following4 c, z" Y" R" |% n7 @
# statement inside your **location** block(s):* f, e6 v0 f0 d6 k. f
#
# include cors_support;4 o! m" E9 z0 }2 g! B
#
# As of Nginx 1.7.5, add_header supports an "always" parameter which q5 n: W3 c+ r, G O( U
# allows CORS to work if the backend returns 4xx or 5xx status code.
#
# For more information on CORS, please see: http://enable-cors.org/4 F# n6 }0 J9 M7 C! K
# Forked from this Gist: https://gist.github.com/michiel/10646404 D+ H& D7 `0 k* X
#
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set $cors '';
if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {
set $cors 'true';, N% ]' ]0 i0 W; p! a
}
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if ($cors = 'true') {
add_header 'Access-Control-Allow-Origin' "$http_origin" always;6 o2 }$ n. }: @4 @" U# r. w& x' o
add_header 'Access-Control-Allow-Credentials' 'true' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
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;
# required to be able to read Authorization header in frontend' U* j ?1 U' Q$ x1 g* V
#add_header 'Access-Control-Expose-Headers' 'Authorization' always;
}
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if ($request_method = 'OPTIONS') {8 {) I% t1 p \( Q2 T! C
# Tell client that this pre-flight info is valid for 20 days) S6 u6 V7 m4 _/ ~
add_header 'Access-Control-Max-Age' 1728000;7 h- a0 ~0 b* G1 x
add_header 'Content-Type' 'text/plain charset=UTF-8';8 y% \, i3 M) b$ w1 `
add_header 'Content-Length' 0;5 r0 c3 W# |& _+ F" b/ l% c
return 204;3 M0 ~7 h* |+ l! N7 t- b/ A9 Z3 y
}
if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) { return 444;
}6 G1 c: n1 T# d+ P, c, R5 A
set $origin $http_origin;
if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {0 h9 o2 [& J+ n+ I3 p
set $origin 'https://default.yourdom.zone';( N4 Z- v |+ D' n7 x" ?+ O
}
if ($request_method = 'OPTIONS') {9 J- \8 ]+ J1 k7 c
add_header 'Access-Control-Allow-Origin' "$origin" always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;2 u! _% ~( |" B( L
add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;4 h' |4 |2 @# h1 u+ z' f% a" w
add_header 'Access-Control-Allow-Credentials' 'true' always;
add_header Access-Control-Max-Age 1728000; #20 days " y. [/ n+ h0 P0 a1 |
add_header Content-Type 'text/plain charset=UTF-8';, T5 W" n; t' u
add_header Content-Length 0;
return 204;
}
if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {
add_header Access-Control-Allow-Origin "$origin" always;5 A o0 e3 X, j; m9 ]& `
add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;
add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;
add_header Access-Control-Allow-Credentials true always;3 X6 ]3 u* M# [
}
# based on https://gist.github.com/4165271/ ^" Z+ G. ?7 J/ C- e# N4 w( K
#
# Slightly tighter CORS config for nginx8 g& Z- G8 n' F6 J+ \
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# A modification of https://gist.github.com/1064640/ to include a white-list of URLs4 r4 ]: k6 j! W6 B; z" e" m+ W
#
# Despite the W3C guidance suggesting that a list of origins can be passed as part of
# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)! ^5 @1 Z" j- f4 d! x3 ~4 h
# don't seem to play nicely with this.+ t6 ^/ z0 U3 V$ C& J4 K. I& ^
#! w9 @1 p% g0 X# p& r. S
# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting
# method to control access instead.1 y( ]3 p# }2 v; i; V# J5 }
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# NB: This relies on the use of the 'Origin' HTTP Header.
location / {
if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {+ [0 A$ N1 o# b3 }- ?6 l0 a
set $cors "true";" K4 P6 f6 B6 u4 T2 r2 v) U' u$ y
}
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# Nginx doesn't support nested If statements. This is where things get slightly nasty.& H O7 a& _3 d3 g- g
# Determine the HTTP request method used
if ($request_method = 'OPTIONS') {
set $cors "${cors}options";
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if ($request_method = 'GET') {6 z2 o, l' n0 j0 n& F( a, k
set $cors "${cors}get";
}$ L# w- }$ b% ~2 w- \
if ($request_method = 'POST') {- J8 r0 z& Z, N* C, U) |
set $cors "${cors}post";. P! q, N' K1 r- c! T7 h8 r) {2 F$ g
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if ($cors = "true") {
# Catch all incase there's a request method we're not dealing with properly6 m" [/ t3 o2 S5 ]1 A. o
add_header 'Access-Control-Allow-Origin' "$http_origin";
}7 }& f: ?6 V6 v$ v6 |6 X' _
if ($cors = "trueget") {
add_header 'Access-Control-Allow-Origin' "$http_origin";
add_header 'Access-Control-Allow-Credentials' 'true';1 U% y* g, t% B# m5 X
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
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 ($cors = "trueoptions") {
add_header 'Access-Control-Allow-Origin' "$http_origin";( |" f6 D V- h0 o) n t
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# Om nom nom cookies: g/ S4 A! v' U6 D! _4 R5 l2 F
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add_header 'Access-Control-Allow-Credentials' 'true';* l( G, L" e, N& l1 r
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';+ W$ p2 L; R& d2 ~- e; ]. S
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#
# Custom headers and headers various browsers *should* be OK with but aren't
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add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';7 E+ z) N. X# O
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#
# Tell client that this pre-flight info is valid for 20 days% i+ ~+ z ?& _, o& G* b( d! J- O5 _
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add_header 'Access-Control-Max-Age' 1728000;3 P6 E- B6 s0 a
add_header 'Content-Type' 'text/plain charset=UTF-8';& @+ d5 O8 e1 b) b
add_header 'Content-Length' 0;3 K3 ^+ b `. u7 ]
return 204;
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if ($cors = "truepost") {
add_header 'Access-Control-Allow-Origin' "$http_origin";
add_header 'Access-Control-Allow-Credentials' 'true';) c! }8 Q5 M" J3 Z* K( q/ p
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';- D8 N& n+ L8 t/ E- F" `
add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
}7 r( x9 N& A( f" G3 }. Z& u
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}
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