I am trying to post an update to Twitter using the api. Following the steps at https://github.com/hadley/httr/blob/master/demo/oauth1-twitter.r, I can get the GET call to work, but I haven't managed to get the POST to work. Here is the relevant code:
library(httr)
library(httpuv)
oauth_endpoints("twitter")
myapp <- oauth_app("twitter",
key = "key"
secret = "secret"
)
twitter_token <- oauth1.0_token(oauth_endpoints("twitter"), myapp)
#this works fine
req <- GET("https://api.twitter.com/1.1/statuses/home_timeline.json",
config(token = twitter_token))
#this doesn't work. Returns error 403: status is forbidden
POST(url = "https://api.twitter.com/1.1/statuses/update.json",
body = "test",
config(token = twitter_token)
)
Any solution that allows a status update (Tweet) from R is acceptable.
The docs say you need to pass a parameter status as a query parameter, not in the body, which makes sense b/c it can only be 140 characters long anyway.
POST("https://api.twitter.com/1.1/statuses/update.json",
query = list(status = "testing from R"),
config(token = twitter_token)
)
Related
I'm trying to create authenticate into the Letterboxd API using R and the httr package. The Letterboxd docs give instructions, but I am not sure how to put everything together into a URL.
I know the url is:
url <- "https://api.letterboxd.com/api/v0/auth/token"
And then they want my username and password, presumably as JSON, but what I'll write as a named list since I'm doing this in R:
login_info <- list(
grant_type = "password",
username = "myemail#gmail.com",
password = "extremelysecurepassword"
)
I've tried various calls, using GET(), oauth2.0_token(), oauth_endpoint() functions from the httr package.
I feel like I have all the necessary information and am circling around a solution, but I can't quite nail it.
The docs contain this information:
When generating or refreshing an access token, make a form request to the /auth/token endpoint with Content-Type: application/x-www-form-urlencoded and Accept: application/json headers
(Full text is linked to above)
And I'm not sure how to add that information; in working with APIs through R, I'm used to just sending URLs with UTM parameters, but the inputs they want don't work here using ? and &.
I'm aware of this related post, but it looks like it relies on having a secret token already. And I don't seem to be able to generate a secret token inside of the GUI of Letterboxd.com, which is again what I'm used to doing with authentication. I think I need to feed it those sources of information above in login_info to the url, but I don't quite know how to connect the dots.
How do I authenticate to the Letterboxd API using R?
This runs for me but I get a 401 Unauthorized since you correctly did not supply valid credentials. It looks like there is a python library for this API https://github.com/swizzlevixen/letterboxd if you need hints how to make subsequent requests.
sign_request() is mimicking python library's api.py#L295-L304
sign_request <- function(apisecret, url, method, body = "") {
signing_bytes <- as.raw(c(charToRaw(method), 0, charToRaw(url), 0, charToRaw(body)))
# https://stackoverflow.com/a/31209556/8996878
# https://stackoverflow.com/q/54606193/8996878
digest::hmac(key = apisecret, object = signing_bytes, algo = "sha256", serialize = FALSE)
}
url <- "https://api.letterboxd.com/api/v0/auth/token"
login_info <- list(
grant_type = "password",
username = "myemail#gmail.com",
password = "extremelysecurepassword"
)
apikey <- "mytopsecretapikey"
apisecret <- "YOUR_API_SECRET"
method <- "POST"
params <- list(
apikey = apikey,
nonce = uuid::UUIDgenerate(),
timestamp = round(as.numeric(Sys.time()))
)
# now we need to sign the request
body <- paste(names(login_info), login_info, sep = "=", collapse = "&")
body <- URLencode(body)
body <- gsub("#","%40", body) # something URLencode doesn't do but post does
destination <- httr::parse_url(url)
destination$query <- params
post_url_with_params <- httr::build_url(destination)
signature <- sign_request(apikey, post_url_with_params, method, body)
token_request <- httr::POST(url, httr::add_headers(
"Accept" = "application/json",
"Authorization" = paste0("Signature ", signature)
),
query = params,
body = login_info, encode = "form", httr::verbose()
)
token_body <- httr::content(token_request, type = "application/json")
# look for the value of"access_token"
I try to call the Google Translate API but always get a 403 error that I didn't provide a valid API key.
I did create one, though, on my Google Cloud Platforms website here: https://console.cloud.google.com/apis/credentials
Here's what I'm doing:
library(jsonlite)
library(httr)
my_text <- c("Hallo Mama", "Ja älskar dig")
my_key <- "MYKEY"
textbody <- toJSON(list(q = my_text,
target = "en"))
translated <- POST(url = paste0("https://translation.googleapis.com/language/translate/v2"),
add_headers("key" = my_key),
content_type("application/json"),
body = textbody,
encode = "json")
But this returns said 403 error, i.e.:
fromJSON(rawToChar(translated$content))
gives:
$error
$error$code
[1] 403
$error$message
[1] "The request is missing a valid API key."
$error$errors
message domain reason
1 The request is missing a valid API key. global forbidden
$error$status
[1] "PERMISSION_DENIED"
Note: the "MYKEY" used above I have of course replaced with my created true API key.
Any ideas what's going on?
Update: the following does work for v2 of the API (but not v3). I was missing te unboxing in the JSON body and I seem to have to put the APIkey into the URL:
textbody <- toJSON(list(q = my_text,
target = "en"),
auto_unbox = TRUE)
translated <- POST(url = paste0("https://translation.googleapis.com/language/translate/v2?key=", my_key),
content_type("application/json"),
body = textbody,
encode = "json")
I am trying to use httr and the code snippet from rapidapi.com to use sky scanner API.This is the first time I am trying this.
My issue is that the code copied directly from the site is not working and this is because of a ' in the code.
How can I debug this error so that I can use the API?
library(httr)
url0 <- "https://skyscanner-skyscanner-flight-search-v1.p.rapidapi.com/apiservices/reference/v1.0/currencies"
API_KEY <- 'my_API_key'
HOST_URL <- 'skyscanner-skyscanner-flight-search-v1.p.rapidapi.com'
response <- VERB(verb="GET",
url=url0,
config = httr::add_headers(x_rapidapi-key = API_KEY , x_rapidapi-host = HOST_URL,'),
encode = content_type("application/octet-stream"))
content(response, "text")
Edit-1
I found a post on the site here that explained that the site gives 2 errors in the code snippet and suggests altering the code. This is giving a different error however. I cannot correctly input the response object.
library(httr)
url <- "https://skyscanner-skyscanner-flight-search-v1.p.rapidapi.com/apiservices/reference/v1.0/currencies"
API_KEY <- 'my_API_key'
response <- VERB("GET",
url,
add_headers(x-rapidapi-key = API_KEY,
x-rapidapi-host = "skyscanner-skyscanner-flight-search-v1.p.rapidapi.com"),
content_type("application/octet-stream"))
content(response,"text")
I'm not sure if this is the right response for this, but your first code snippet has the extra ' at the end like you said:
config = httr::add_headers(x_rapidapi-key = API_KEY , x_rapidapi-host = HOST_URL,'),
try changing to
config = httr::add_headers(x_rapidapi-key = API_KEY , x_rapidapi-host = HOST_URL),
Altogether I'd try :
library(httr)
url0 <- "https://skyscanner-skyscanner-flight-search-v1.p.rapidapi.com/apiservices/reference/v1.0/currencies"
API_KEY <- 'my_API_key'
HOST_URL <- 'skyscanner-skyscanner-flight-search-v1.p.rapidapi.com'
response <- VERB(verb="GET",
url=url0,
config = httr::add_headers(x_rapidapi-key = API_KEY, x_rapidapi-host = HOST_URL, content_type("application/octet-stream")))
Then check the response by just response
I got a solution to the problem. This should correct the code snippet and let it run in R.
# Correct
library(httr)
url <- "https://skyscanner-skyscanner-flight-search-v1.p.rapidapi.com/apiservices/reference/v1.0/currencies"
API_KEY <- "your_key"
response <- VERB("GET",
url,
add_headers("x-rapidapi-key" = API_KEY,
"x-rapidapi-host" = "skyscanner-skyscanner-flight-search-v1.p.rapidapi.com"),
content_type("application/octet-stream"))
content(response,"text")
Robject <- content(response, "text")
Robject
This corrects the exact code on rapid API's snippet.
Always use the code snippet that RapidAPI provides. It's authentic and always works. They provide support for 20 programming languages with 40 different libraries.
Try this code snippet:
library(httr)
url <- "https://skyscanner-skyscanner-flight-search-v1.p.rapidapi.com/apiservices/reference/v1.0/currencies"
response <- VERB("GET", url, add_headers(x_rapidapi-host = 'skyscanner-skyscanner-flight-search-v1.p.rapidapi.com', x_rapidapi-key = '*****************************', '), content_type("application/octet-stream"))
content(response, "text")
I am trying to write an R script to programmatically update a Google Tag Manager container via API and I have hit a bit of a wall getting it to work, as it keeps returning an invalid argument error. The problem is that I can't quite figure out what the problem is.
The documentation for the API call is here:
https://developers.google.com/tag-manager/api/v2/reference/accounts/containers/update
Here's the code:
library(httr)
url_base <- 'https://www.googleapis.com/tagmanager/v2'
url_path <- paste('accounts',account_id,'containers',container_id,sep='/')
api_url <- paste(url_base,url_path,sep='/')
#since the instructions indicate that the request body parameters are all optional, let's just send a new name
call <- PUT(api_url,
add_headers(Authorization = paste("Bearer", gtm_token$credentials$access_token)),
encode = 'json',
body = list(name = 'new name'))
call_content <- content(call,'parsed')
This is a pretty standard API call to the GTM API, and in fact I have written a bunch of functions for other GTM API methods that work in the same way, so I am a bit perplexed as to why this one keeps failing:
$error
$error$errors
$error$errors[[1]]
$error$errors[[1]]$domain
[1] "global"
$error$errors[[1]]$reason
[1] "invalidArgument"
$error$errors[[1]]$message
[1] "Bad Request"
$error$code
[1] 400
$error$message
[1] "Bad Request"
It seems like the issue is in the message body, but it's not clear if the issue is down to the API expecting different information / more parameters, when the documentation suggests that all of the parameters are optional.
OK, so the documentation is lacking here. This works if you include a name at least. Here's a working function:
gtm_containers_update <- function(account_id,container_id,container_name,usage_context,domain_name,notes,token) {
require(httr)
token$refresh()
#create the post url
api_url <- paste('https://www.googleapis.com/tagmanager/v2','accounts',account_id,'containers',container_id,sep='/')
#create the list with required components
call_body <- list(name = container_name,
usageContext = list(usage_context),
notes = notes,
domainName = domain_name)
call <- POST(url,
add_headers(Authorization = paste("Bearer", token$credentials$access_token)),
encode = 'json',
body = call_body)
print(paste('Status code:',call$status_code))
}
I am having trouble with DELETE requests in R. I have been successful in making GET and POST requests using the below code. Any help / pointers will be appreciated.
It will require an api.key, secret & passphrase from GDAX to work.
Here is my function:
library(RCurl)
library(jsonlite)
library(httr)
library(digest)
cancel_order <- function(api.key,
secret,
passphrase) {
api.url <- "https://api.gdax.com"
#get url extension----
req.url <- "/orders/"
#define method----
method = "DELETE"
url <- paste0(api.url, req.url)
timestamp <-
format(as.numeric(Sys.time()), digits = 13) # create nonce
key <- base64Decode(secret, mode = "raw") # encode api secret
#create final end point----
what <- paste0(timestamp, method, req.url)
#create encoded signature----
sign <-
base64Encode(hmac(key, what, algo = "sha256", raw = TRUE)) # hash
#define headers----
httpheader <- list(
'CB-ACCESS-KEY' = api.key,
'CB-ACCESS-SIGN' = sign,
'CB-ACCESS-TIMESTAMP' = timestamp,
'CB-ACCESS-PASSPHRASE' = passphrase,
'Content-Type' = 'application/json'
)
##------------------------------------------------
response <- getURL(
url = url,
curl = getCurlHandle(useragent = "R"),
httpheader = httpheader
)
print(rawToChar(response)) #rawToChar only on macOS and not on Win
}
The error I get is "{\"message\":\"invalid signature\"}" even though the same command will code and signature will work with GET & POST.
Ref: GDAX API DOCs
just a guess as I am not familiar with the API, but perhaps you are missing the 'order-id' ...
look at: https://docs.gdax.com/?javascript#cancel-an-order
Ok. I took #mrflick's advise and pointed my connection to requestbin based on his feedback on a different but related question.
After careful inspection, I realized that the my request for some reason was treated as a POST request and not a DELETE request. So I decided to replace the getURL function with another higher level function from RCurl for it to work.
response <- httpDELETE(
url = url,
curl = getCurlHandle(useragent = "R"),
httpheader = httpheader
)
Everything else remains the same. Apparently there never was an issue with the signature.
I have added this function now to my unofficial wrapper rgdax
EDIT::
The unofficial wrapper is now official and on CRAN.