R 中的 Azure PUT Blob 身份验证失败 [英] Azure PUT Blob authentication fails in R

问题描述

我想使用 R 和 Azure 存储的 Put Blob API 将文件放入我的 Blob 存储帐户，但它无法验证我的请求.不幸的是，我找不到 R 的任何文档或示例代码. Put Blob API 的一般文档:https://docs.microsoft.com/en-us/休息/api/storageservices/put-blob

I would like to use R and the Azure Storage's Put Blob API to put files into my blob storage account but it fails to authenticate my request. Unfortunately, I couldn't find any documentation or sample code for R. General documentation of Put Blob API: https://docs.microsoft.com/en-us/rest/api/storageservices/put-blob

这是我尝试使用的代码:

library(httr)  

account <- "myAccount"  
container <- "myContainer"  
filename <- "test.txt"  
key <- "primaryKey"  
object <- "Hello World" 

url <- paste0("https://", account, ".blob.core.windows.net/", container, "/", filename)
requestdate <- format(Sys.time(),"%a, %d %b %Y %H:%M:%S %Z", tz="GMT")  
content_length <- nchar(object, type = "bytes")  

signature_string <- paste0("PUT", "
", "
", "
",
                       content_length, "
", 
                       "
",
                       "x-ms-date:",requestdate, "
", 
                       "x-ms-version:2015-02-21", "
",
                       "x-ms-blob-type:BlockBlob", "
",
                       "Content-Type:text/plain",  "
",
                       "
",
                       "x-ms-blob-content-dis filename=", filename, "
",
                       "
",
                       "/",account, "/",container,"/", filename)

headerstuff <- add_headers(Authorization=paste0("SharedKey ",account,":", 
                       RCurl::base64(digest::hmac(key = 
RCurl::base64Decode(key, mode = "raw"),
                       object = enc2utf8(signature_string),
                       algo = "sha256", raw = TRUE))),
                       `Content-Length` = content_length,
                       `x-ms-date`= requestdate,
                       `x-ms-version`= "2015-02-21",
                       `x-ms-blob-type`="BlockBlob",
                       `Content-Type`="text/plain")

content(PUT(url, config = headerstuff, body = object, verbose()), as = "text")`

请求发送:

-> PUT /myContainer/test.txt HTTP/1.1
-> Host: myAccount.blob.core.windows.net
-> User-Agent: libcurl/7.49.1 r-curl/2.3 httr/1.2.1
-> Accept-Encoding: gzip, deflate
-> Accept: application/json, text/xml, application/xml, */*
-> Authorization: SharedKey myAccount:hashedSignatureString
-> Content-Length: 11
-> x-ms-date: Tue, 13 Jun 2017 08:50:38 GMT
-> x-ms-version: 2015-02-21
-> x-ms-blob-type: BlockBlob
-> Content-Type: text/plain
-> 
>> Hello World

回复:

<- HTTP/1.1 403 Server failed to authenticate the request. Make sure the 
value of Authorization header is formed correctly including the signature.
<- Content-Length: 693
<- Content-Type: application/xml
<- Server: Microsoft-HTTPAPI/2.0
<- x-ms-request-id: efc2c8de-0001-00a9-3d21-e41b06000000
<- Date: Tue, 13 Jun 2017 08:48:56 GMT

我对 List Blob API 进行了相同的尝试(对标头的格式进行了一些细微的更改)并且它运行良好，但我无法使其与 Put Blob 一起使用.从此处列出 Blob 解决方案:https://stackoverflow.com/a/29286040/8085694

I tried the same with the List Blobs API (with some minor changes in the formatting of the headers) and it works well, but I can't make it work with Put Blob. List Blob solution from here: https://stackoverflow.com/a/29286040/8085694

能否提供一些示例 R 代码用于在 Put Blob 中创建身份验证标头或帮助我解决此问题?

Could you please provide some sample R code for Authentication header creation at Put Blob or help me resolve this issue?

另外，如果我更进一步，是否有可能以某种方式将 R 对象作为 blob 上传到存储?

Also, if I go further, is it possible somehow to upload R objects as blobs to the storage?

提前致谢，

加博尔

推荐答案

我设法通过将 "字符和所有内容放在正确的位置来解决这个问题.基于 Gaurav Mantri 的帮助，我使用了:
https://docs.microsoft.com/en-us/rest/api/storageservices/authentication-for-the-azure-storage-services

I managed to resolve this issue by putting the " " characters and everything in the right place. Based on Gaurav Mantri's help, I used:
https://docs.microsoft.com/en-us/rest/api/storageservices/authentication-for-the-azure-storage-services

signature_string"中的以下更改有效:

The following changes in the 'signature_string' worked:

signature_string <- paste0("PUT", "
",            # HTTP Verb
                           "
",                   # Content-Encoding  
                           "
",                   # Content-Language
                           content_length, "
",   # Content-Length
                           "
",                   # Content-MD5
                           "text/plain", "
",     # Content-Type
                           "
",                   # Date
                           "
",                   # If-Modified-Since
                           "
",                   # If-Match  
                           "
",                   # If-None-Match
                           "
",                   # If-Unmodified-Since
                           "
",                   # Range
                           # Here comes the Canonicalized Headers
                           "x-ms-blob-type:BlockBlob","
",
                           "x-ms-date:",requestdate,"
",
                           "x-ms-version:2015-02-21","
",
                           # Here comes the Canonicalized Resource
                           "/",account, "/",container,"/", filename)

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