98 lines
2.5 KiB
Markdown
98 lines
2.5 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: CURLOPT_USERPWD
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_PASSWORD (3)
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- CURLOPT_PROXYUSERPWD (3)
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- CURLOPT_USERNAME (3)
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---
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# NAME
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CURLOPT_USERPWD - username and password to use in authentication
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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_setopt(CURL *handle, CURLOPT_USERPWD, char *userpwd);
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~~~
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# DESCRIPTION
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Pass a char pointer as parameter, pointing to a null-terminated login details
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string for the connection. The format of which is: [username]:[password].
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When using Kerberos V5 authentication with a Windows based server, you should
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specify the username part with the domain name in order for the server to
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successfully obtain a Kerberos Ticket. If you do not then the initial part of
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the authentication handshake may fail.
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When using NTLM, the username can be specified simply as the username without
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the domain name should the server be part of a single domain and forest.
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To specify the domain name use either Down-Level Logon Name or UPN (User
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Principal Name) formats. For example **EXAMPLE\user** and **user@example.com**
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respectively.
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Some HTTP servers (on Windows) support inclusion of the domain for Basic
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authentication as well.
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When using HTTP and CURLOPT_FOLLOWLOCATION(3), libcurl might perform several
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requests to possibly different hosts. libcurl only sends this user and
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password information to hosts using the initial hostname (unless
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CURLOPT_UNRESTRICTED_AUTH(3) is set), so if libcurl follows redirects to other
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hosts, it does not send the user and password to those. This is enforced to
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prevent accidental information leakage.
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Use CURLOPT_HTTPAUTH(3) to specify the authentication method for HTTP
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based connections or CURLOPT_LOGIN_OPTIONS(3) to control IMAP, POP3 and
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SMTP options.
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The user and password strings are not URL decoded, so there is no way to send
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in a username containing a colon using this option. Use CURLOPT_USERNAME(3)
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for that, or include it in the URL.
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The application does not have to keep the string around after setting this
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option.
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# DEFAULT
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NULL
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# PROTOCOLS
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Most
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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/foo.bin");
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curl_easy_setopt(curl, CURLOPT_USERPWD, "clark:kent");
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res = curl_easy_perform(curl);
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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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Always
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# RETURN VALUE
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Returns CURLE_OK on success or
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CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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