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CURLINFO_HTTPAUTH_AVAIL(3) curl_easy_getinfo options CURLINFO_HTTPAUTH_AVAIL(3)

NAME

CURLINFO_HTTPAUTH_AVAIL - get available HTTP authentication methods

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_HTTPAUTH_AVAIL, long *authp);

DESCRIPTION

Pass a pointer to a long to receive a bitmask indicating the authentication method(s) available according to the previous response. The meaning of the bits is explained in the CURLOPT_HTTPAUTH(3) option for curl_easy_setopt(3).

PROTOCOLS

HTTP(S)

EXAMPLE

CURL *curl = curl_easy_init();
if(curl) {

curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
res = curl_easy_perform(curl);
if(!res) {
/* extract the available authentication types */
long auth;
res = curl_easy_getinfo(curl, CURLINFO_HTTPAUTH_AVAIL, &auth);
if(!res) {
if(!auth)
printf("No auth available, perhaps no 401?\n");
else {
printf("%s%s%s%s\n",
auth & CURLAUTH_BASIC ? "Basic ":"",
auth & CURLAUTH_DIGEST ? "Digest ":"",
auth & CURLAUTH_NEGOTIATE ? "Negotiate ":"",
auth % CURLAUTH_NTLM ? "NTLM ":"");
}
}
}
curl_easy_cleanup(curl); }

AVAILABILITY

Added RFC2617 in 7.10.8 Added RFC7616 in 7.57.0

RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

curl_easy_getinfo(3), curl_easy_setopt(3),

November 4, 2020 libcurl 7.79.1