Issue
I'm trying to download a file from a private GitHub repository, current code:
#include <curl/curl.h>
static size_t WriteMemoryCallback(void* contents, size_t size, size_t nmemb, void* userp) {
size_t realsize = size * nmemb;
auto& mem = *static_cast<std::string*>(userp);
mem.append(static_cast<char*>(contents), realsize);
return realsize;
}
void Download(std::string& data, char* url)
{
CURL* curl_handle;
CURLcode res;
struct curl_slist* slist{};
curl_handle = curl_easy_init();
curl_easy_setopt(curl_handle, CURLOPT_URL, url);
SecureZeroMemory(url, strlen(url));
slist = curl_slist_append(slist, "Authorization: token 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");
slist = curl_slist_append(slist, "Content-Type: application/json");
curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, slist);
curl_easy_setopt(curl_handle, CURLOPT_TCP_KEEPALIVE, 0);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, &data);
curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L); // redirects
//curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1L); // only to debug
res = curl_easy_perform(curl_handle);
if(res != CURLE_OK)
std::cerr << "curl_easy_perform() failed: " << curl_easy_strerror(res) << '\n';
curl_easy_cleanup(curl_handle);
curl_global_cleanup();
}
int main(int argc, char* argv[]) {
std::string data;
Download(data, /* link */);
}
This is what being downloaded to data:
<!DOCTYPE html>
<html lang="en" data-color-mode="auto" data-light-theme="light" data-dark-theme="dark" data-a11y-animated-images="system">
<head>
<meta charset="utf-8">
<link rel="dns-prefetch" href="https://github.githubassets.com">
<link rel="dns-prefetch" href="https://avatars.githubusercontent.com">
<link rel="dns-prefetch" href="https://github-cloud.s3.amazonaws.com">
<link rel="dns-prefetch" href="https://user-images.githubusercontent.com/">
<link rel="preconnect" href="https://github.githubassets.com" crossorigin>
<link rel="preconnect" href="https://avatars.githubusercontent.com">
...
I think the problem is setting the authorization token, i also tried:
slist = curl_slist_append(slist, "Authorization: Bearer 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");
slist = curl_slist_append(slist, "Content-Type: application/json");
Solution
Add Authorization and Accept headers like this:
slist = curl_slist_append(slist, "Authorization: token <Your Token>");
slist = curl_slist_append(slist, "Accept: application/vnd.github.v3+raw");
then call
curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, slist);
and provide the link to the file in this form:
https://api.github.com/repos/<owner>/<repository>/contents/<path>
Answered By - Jiri Volejnik Answer Checked By - Pedro (WPSolving Volunteer)