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61df5f466c
- curl_ntlm_core, smtp, schannel: fix comments.
- curl_setup.h: fix to undef before define.
- tool_doswin, server/sockfilt: reduce variables scopes.
- tool_doswin: drop an interim variable.
- windows: replace `SOCKET_ERROR` with `0` to align with rest of code.
- libssh2: rename variable to align with rest of code.
- gtls, unit1398: use `#if 0`.
- curl_trc.h, curlx/inet_ntop.h: add missing parentheses in macro
expressions.
- ldap.c: set empty macro to `do {} while(0)`.
- examples/crawler: rename a non-CURLcode `result` variable.
- CURLINFO_TLS_SESSION: drop stray colon.
- add `const` to casts where missing.
- drop unnecessary parentheses.
- fix indent.
- quote style.
- comment style.
- whitespace, newlines, fold/unfold.
Closes #20554
77 lines
1.8 KiB
Markdown
77 lines
1.8 KiB
Markdown
---
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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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Protocol:
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- HTTP
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Added-in: 7.10.8
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---
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# NAME
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CURLINFO_HTTPAUTH_AVAIL - 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 curl_easy_setopt(3).
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# %PROTOCOLS%
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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 result;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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result = curl_easy_perform(curl);
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if(result == CURLE_OK) {
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/* extract the available authentication types */
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long auth;
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result = curl_easy_getinfo(curl, CURLINFO_HTTPAUTH_AVAIL, &auth);
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if(result == CURLE_OK) {
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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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# RETURN VALUE
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curl_easy_getinfo(3) returns a CURLcode indicating success or error.
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CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
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libcurl-errors(3).
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