# CORS header support3 O8 ?: E8 d' G `# t: N
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# One way to use this is by placing it into a file called "cors_support"
# under your Nginx configuration directory and placing the following# w5 A9 m, N+ G# i( I
# statement inside your **location** block(s):
#
# include cors_support;1 ~& X+ M& ?% Y+ i; M
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# As of Nginx 1.7.5, add_header supports an "always" parameter which
# 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/9 L* e4 f! F4 l: `& S% U
# Forked from this Gist: https://gist.github.com/michiel/1064640
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set $cors ''; M& _1 ~5 B* b4 ^
if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)$') {
set $cors 'true';
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if ($cors = 'true') {6 n7 y% B [- p8 M8 X" w2 E
add_header 'Access-Control-Allow-Origin' "$http_origin" always;
add_header 'Access-Control-Allow-Credentials' 'true' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;
# required to be able to read Authorization header in frontend
#add_header 'Access-Control-Expose-Headers' 'Authorization' always;5 }* V6 g# U! e1 y: W; H( c
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if ($request_method = 'OPTIONS') {& g7 z$ _/ X1 Y0 q7 X: E* r% R+ E
# Tell client that this pre-flight info is valid for 20 days
add_header 'Access-Control-Max-Age' 1728000;- T- v& g( e$ M
add_header 'Content-Type' 'text/plain charset=UTF-8';
add_header 'Content-Length' 0;
return 204;5 c5 G {1 V6 G. C) D1 M
}
if ( $request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|PATCH|DELETE)$ ) { return 444;
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set $origin $http_origin;
if ($origin !~ '^https?://(subdom1|subdom2)\.yourdom\.zone$') {
set $origin 'https://default.yourdom.zone';$ q/ F T+ h7 s9 z2 o4 |* _
}
if ($request_method = 'OPTIONS') {) d- {4 N5 G/ h; G" u3 F$ Z% T. a
add_header 'Access-Control-Allow-Origin' "$origin" always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;" W. \$ W* {, W* f8 j% F2 t% n
add_header 'Access-Control-Allow-Headers' 'Content-Type, Accept, Authorization' always;3 J( y5 I# s0 C4 |" m/ @
add_header 'Access-Control-Allow-Credentials' 'true' always;
add_header Access-Control-Max-Age 1728000; #20 days
add_header Content-Type 'text/plain charset=UTF-8';
add_header Content-Length 0;' c6 P5 f* O& L$ i0 ]+ A$ Q8 E! r
return 204;& F. ?$ t7 p* j
}
if ($request_method ~ '(GET|POST|PATCH|PUT|DELETE)') {- I; {+ P! ~" ~( W! V
add_header Access-Control-Allow-Origin "$origin" always;
add_header Access-Control-Allow-Methods 'GET, POST, PATCH, PUT, DELETE, OPTIONS' always;1 P8 T( |7 t) b2 m5 b+ a
add_header Access-Control-Allow-Headers 'Content-Type, Accept, Authorization' always;& h( }3 S: {+ v9 h$ b3 A2 Y
add_header Access-Control-Allow-Credentials true always;
}
# based on https://gist.github.com/4165271/
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# Slightly tighter CORS config for nginx k+ l* l) u+ a6 X
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# A modification of https://gist.github.com/1064640/ to include a white-list of URLs
#
# 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)
# don't seem to play nicely with this.- Y3 @) j% I9 \
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# To avoid the use of 'Access-Control-Allow-Origin: *', use a simple-ish whitelisting$ E' P# L/ v6 W5 m
# method to control access instead.9 X' _0 {1 G, X; C+ e9 a/ F3 Z! u
#
# NB: This relies on the use of the 'Origin' HTTP Header.
location / {
if ($http_origin ~* (^https?://([^/]+\.)*(domainone|domaintwo)\.com$)) {# w$ u) q( P3 I6 |' \
set $cors "true";
}
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# Nginx doesn't support nested If statements. This is where things get slightly nasty.
# Determine the HTTP request method used! k5 | N9 U% V
if ($request_method = 'OPTIONS') {
set $cors "${cors}options";0 }! U4 ]) T! r* O) I- |% S# q& S
}
if ($request_method = 'GET') {; o O J9 h. }# }8 Y# X
set $cors "${cors}get";
}
if ($request_method = 'POST') {
set $cors "${cors}post";
}
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if ($cors = "true") {
# Catch all incase there's a request method we're not dealing with properly
add_header 'Access-Control-Allow-Origin' "$http_origin";
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if ($cors = "trueget") {- O8 Z4 w* r' }. ~
add_header 'Access-Control-Allow-Origin' "$http_origin";/ V6 C: D5 _& J1 o& o- S
add_header 'Access-Control-Allow-Credentials' 'true';
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';9 W1 @( g% c' I; {0 d' K
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if ($cors = "trueoptions") {) K" \' Y% C- y; |: e, @% o
add_header 'Access-Control-Allow-Origin' "$http_origin";3 }; k% @$ W+ B: l
#
# Om nom nom cookies/ n- U/ u% I+ l) P
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add_header 'Access-Control-Allow-Credentials' 'true';) y: j$ z4 x# g: ~" l+ n5 I2 u J. T
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';, r' |) Q6 T1 b4 m1 P) D0 h* c
#
# Custom headers and headers various browsers *should* be OK with but aren't+ G; ^' {2 k. S8 W
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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';
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# Tell client that this pre-flight info is valid for 20 days
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add_header 'Access-Control-Max-Age' 1728000;% W8 |* I% H( J1 M0 O! S
add_header 'Content-Type' 'text/plain charset=UTF-8';! |( D3 p7 T( H, R7 z
add_header 'Content-Length' 0;' {! i I5 H8 l( E6 k9 j
return 204;0 z$ u! \2 M, j$ l
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if ($cors = "truepost") {
add_header 'Access-Control-Allow-Origin' "$http_origin";
add_header 'Access-Control-Allow-Credentials' 'true';
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';7 s# j; Z% V7 a2 N3 B
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}
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