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89 lines
3.5 KiB
89 lines
3.5 KiB
4 months ago
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.haxx.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_COOKIEFILE 3 "September 16, 2020" "libcurl 7.73.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_COOKIEFILE \- file name to read cookies from
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COOKIEFILE, char *filename);
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.SH DESCRIPTION
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Pass a pointer to a null-terminated string as parameter. It should point to
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the file name of your file holding cookie data to read. The cookie data can be
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in either the old Netscape / Mozilla cookie data format or just regular HTTP
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headers (Set-Cookie style) dumped to a file.
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It also enables the cookie engine, making libcurl parse and send cookies on
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subsequent requests with this handle.
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Given an empty or non-existing file or by passing the empty string ("") to
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this option, you can enable the cookie engine without reading any initial
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cookies. If you tell libcurl the file name is "-" (just a single minus sign),
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libcurl will instead read from stdin.
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This option only \fBreads\fP cookies. To make libcurl write cookies to file,
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see \fICURLOPT_COOKIEJAR(3)\fP.
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Exercise caution if you are using this option and multiple transfers may occur.
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If you use the Set-Cookie format and don't specify a domain then the cookie is
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sent for any domain (even after redirects are followed) and cannot be modified
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by a server-set cookie. If a server sets a cookie of the same name then both
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will be sent on a future transfer to that server, likely not what you intended.
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To address these issues set a domain in Set-Cookie (doing that will include
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sub-domains) or use the Netscape format.
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If you use this option multiple times, you just add more files to read.
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Subsequent files will add more cookies.
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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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.SH DEFAULT
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NULL
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.SH PROTOCOLS
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HTTP
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.SH EXAMPLE
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.nf
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
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/* get cookies from an existing file */
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curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "/tmp/cookies.txt");
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ret = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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.fi
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.SH "Cookie file format"
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The cookie file format and general cookie concepts in curl are described in
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the HTTP-COOKIES.md file, also hosted online here:
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https://curl.haxx.se/docs/http-cookies.html
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.SH AVAILABILITY
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As long as HTTP is supported
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.SH RETURN VALUE
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Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR CURLOPT_COOKIE "(3), " CURLOPT_COOKIEJAR "(3), "
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