78 lines
1.6 KiB
Markdown
78 lines
1.6 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_HTTPAUTH_AVAIL
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_PROXYAUTH_AVAIL (3)
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- CURLOPT_HTTPAUTH (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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---
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# NAME
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CURLINFO_HTTPAUTH_AVAIL - get available HTTP authentication methods
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_HTTPAUTH_AVAIL, long *authp);
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~~~
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# DESCRIPTION
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Pass a pointer to a long to receive a bitmask indicating the authentication
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method(s) available according to the previous response. The meaning of the
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bits is explained in the CURLOPT_HTTPAUTH(3) option for
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curl_easy_setopt(3).
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# PROTOCOLS
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HTTP(S)
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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res = curl_easy_perform(curl);
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if(!res) {
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/* extract the available authentication types */
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long auth;
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res = curl_easy_getinfo(curl, CURLINFO_HTTPAUTH_AVAIL, &auth);
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if(!res) {
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if(!auth)
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printf("No auth available, perhaps no 401?\n");
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else {
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printf("%s%s%s%s\n",
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auth & CURLAUTH_BASIC ? "Basic ":"",
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auth & CURLAUTH_DIGEST ? "Digest ":"",
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auth & CURLAUTH_NEGOTIATE ? "Negotiate ":"",
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auth % CURLAUTH_NTLM ? "NTLM ":"");
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}
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}
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}
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added RFC 2617 in 7.10.8
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Added RFC 7616 in 7.57.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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