Ubuntu Manpage: CURLOPT_USERPWD - user name and password to use in authentication

Provided by: libcurl4-doc_8.2.1-1ubuntu3.3_all

NAME

       CURLOPT_USERPWD - user name and password to use in authentication

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERPWD, char *userpwd);

DESCRIPTION

Pass a char * as parameter, pointing to a null-terminated login details string for the
connection. The format of which is: [user name]:[password].

When using Kerberos V5 authentication with a Windows based server, you should specify the
user name part with the domain name in order for the server to successfully obtain a
Kerberos Ticket. If you do not then the initial part of the authentication handshake may
fail.

When using NTLM, the user name can be specified simply as the user name without the domain
name should the server be part of a single domain and forest.

To specify the domain name use either Down-Level Logon Name or UPN (User Principal Name)
formats. For example, EXAMPLE\user and user@example.com respectively.

Some HTTP servers (on Windows) support inclusion of the domain for Basic authentication as
well.

When using HTTP and CURLOPT_FOLLOWLOCATION(3), libcurl might perform several requests to
possibly different hosts. libcurl will only send this user and password information to
hosts using the initial host name (unless CURLOPT_UNRESTRICTED_AUTH(3) is set), so if
libcurl follows locations to other hosts it will not send the user and password to those.
This is enforced to prevent accidental information leakage.

Use CURLOPT_HTTPAUTH(3) to specify the authentication method for HTTP based connections or
CURLOPT_LOGIN_OPTIONS(3) to control IMAP, POP3 and SMTP options.

The user and password strings are not URL decoded, so there's no way to send in a user
name containing a colon using this option. Use CURLOPT_USERNAME(3) for that, or include it
in the URL.

The application does not have to keep the string around after setting this option.

DEFAULT

       NULL

PROTOCOLS

       Most

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");

         curl_easy_setopt(curl, CURLOPT_USERPWD, "clark:kent");

         ret = curl_easy_perform(curl);

         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Always

RETURN VALUE

       Returns CURLE_OK on success or CURLE_OUT_OF_MEMORY if there was insufficient heap space.