curl/docs/libcurl/opts/CURLOPT_USERNAME.md
Daniel Stenberg eefcc1bda4
docs: introduce "curldown" for libcurl man page format
curldown is this new file format for libcurl man pages. It is markdown
inspired with differences:

- Each file has a set of leading headers with meta-data
- Supports a small subset of markdown
- Uses .md file extensions for editors/IDE/GitHub to treat them nicely
- Generates man pages very similar to the previous ones
- Generates man pages that still convert nicely to HTML on the website
- Detects and highlights mentions of curl symbols automatically (when
  their man page section is specified)

tools:

- cd2nroff: converts from curldown to nroff man page
- nroff2cd: convert an (old) nroff man page to curldown
- cdall: convert many nroff pages to curldown versions
- cd2cd: verifies and updates a curldown to latest curldown

This setup generates .3 versions of all the curldown versions at build time.

CI:

Since the documentation is now technically markdown in the eyes of many
things, the CI runs many more tests and checks on this documentation,
including proselint, link checkers and tests that make sure we capitalize the
first letter after a period...

Closes #12730
2024-01-23 00:29:02 +01:00

93 lines
2.1 KiB
Markdown

---
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_USERNAME
Section: 3
Source: libcurl
See-also:
- CURLOPT_HTTPAUTH (3)
- CURLOPT_PASSWORD (3)
- CURLOPT_PROXYAUTH (3)
- CURLOPT_USERPWD (3)
---
# NAME
CURLOPT_USERNAME - user name to use in authentication
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERNAME,
char *username);
~~~
# DESCRIPTION
Pass a char pointer as parameter, which should be pointing to the
null-terminated user name to use for the transfer.
CURLOPT_USERNAME(3) sets the user name to be used in protocol
authentication. You should not use this option together with the (older)
CURLOPT_USERPWD(3) option.
When using Kerberos V5 authentication with a Windows based server, you should
include 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 include 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.
To specify the password and login options, along with the user name, use the
CURLOPT_PASSWORD(3) and CURLOPT_LOGIN_OPTIONS(3) options.
The application does not have to keep the string around after setting this
option.
# DEFAULT
blank
# PROTOCOLS
Most
# EXAMPLE
~~~c
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_USERNAME, "clark");
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
~~~
# AVAILABILITY
Added in 7.19.1
# RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.