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79 lines
2.6 KiB
Groff
79 lines
2.6 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_COOKIEFILE.md
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.TH CURLOPT_COOKIEFILE 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_COOKIEFILE \- filename to read cookies from
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.SH SYNOPSIS
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.nf
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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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.fi
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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 filename 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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By passing the empty string ("") to this option, you enable the cookie engine
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without reading any initial cookies. If you tell libcurl the filename is "\-"
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(just a single minus sign), libcurl instead reads 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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If you read cookies from a plain HTTP headers file and it does not specify a
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domain in the Set\-Cookie line, then the cookie is not sent since the cookie
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domain cannot match the target URL\(aqs. To address this, set a domain in
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Set\-Cookie line (doing that includes subdomains) or preferably: use the
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Netscape format.
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If you use this option multiple times, you add more files to read cookies
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from.
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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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Setting this option to NULL (since 7.77.0) explicitly disables the cookie
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engine and clears the list of files to read cookies from.
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.SH SECURITY
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This document previously mentioned how specifying a non\-existing file can also
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enable the cookie engine. While true, we strongly advise against using that
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method as it is too hard to be sure that files that stay that way in the long
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run.
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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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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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/* get cookies from an existing file */
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curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "/tmp/cookies.txt");
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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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.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
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online here: https://curl.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),
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.BR CURLOPT_COOKIEJAR (3),
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.BR CURLOPT_COOKIESESSION (3)
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