reorg modules

2022-06-28 22:47:38 +08:00
parent c892e8fb41
commit f06c818f4a
16 changed files with 12 additions and 29 deletions
@@ -0,0 +1,36 @@
+local strip_path = require("strip_path")
+
+-- filename eg. /file_upload/xxxx-xxxx-xxxx-xxxx.mp3
+local function calc_token(filename)
+
+    -- Upyun upload parameters
+    local operator = ngx.var.upyun_operator
+    local password = ngx.var.upyun_password
+    local bucket = ngx.var.upyun_bucket
+    local directory = ngx.var.upyun_directory
+
+    local expiration = 1800
+    local method = "POST"
+
+    local save_key = "/" .. directory .. "/" .. strip_path.strip_path(filename)
+    print("save key...", save_key)
+    -- Get RFC1123 data
+    local date = ngx.http_time(ngx.time()) -- RFC1123 date
+    print("date ...", date)
+    -- Generate upyun UCT time
+    local utc_time = os.time(os.date("!*t"))
+    -- Calculate upyun file expiration
+    expiration = utc_time + expiration
+    print("expiration ...", expiration)
+    -- 不能使用cjson，因为lua的table没有顺序，cjson encode出来的顺序会错乱
+    local policy = string.format("{\"bucket\":\"%s\",\"save-key\":\"%s\",\"expiration\":\"%s\",\"date\":\"%s\"}", bucket, save_key, expiration, date)
+    local to_be_signed = method .. "&" .. "/" .. bucket .. "&" .. date .. "&" .. ngx.encode_base64(policy)
+    print("to be signed ...", to_be_signed)
+    local hmac_sha1 = ngx.hmac_sha1(ngx.md5(password), to_be_signed)
+    local signature = ngx.encode_base64(hmac_sha1)
+
+    return { token = string.format("UPYUN %s:%s", operator, signature), policy = policy }
+end
+
+
+return calc_token