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| .TH CURLOPT_COOKIELIST 3 "October 31, 2021" "libcurl 7.80.0" "curl_easy_setopt options" |
| |
| .SH NAME |
| CURLOPT_COOKIELIST \- add to or manipulate cookies held in memory |
| .SH SYNOPSIS |
| .nf |
| #include <curl/curl.h> |
| |
| CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COOKIELIST, |
| char *cookie); |
| .SH DESCRIPTION |
| Pass a char * to a \fIcookie\fP string. |
| |
| Such a cookie can be either a single line in Netscape / Mozilla format or just |
| regular HTTP-style header (Set-Cookie: ...) format. This will also enable the |
| cookie engine. This adds that single cookie to the internal cookie store. |
| |
| Exercise caution if you are using this option and multiple transfers may occur. |
| If you use the Set-Cookie format and do not specify a domain then the cookie is |
| sent for any domain (even after redirects are followed) and cannot be modified |
| by a server-set cookie. If a server sets a cookie of the same name (or maybe |
| you have imported one) then both will be sent on a future transfer to that |
| server, likely not what you intended. To address these issues set a domain in |
| Set-Cookie (doing that will include sub-domains) or use the Netscape format as |
| shown in EXAMPLE. |
| |
| Additionally, there are commands available that perform actions if you pass in |
| these exact strings: |
| .IP ALL |
| erases all cookies held in memory |
| |
| .IP SESS |
| erases all session cookies held in memory |
| |
| .IP FLUSH |
| writes all known cookies to the file specified by \fICURLOPT_COOKIEJAR(3)\fP |
| |
| .IP RELOAD |
| loads all cookies from the files specified by \fICURLOPT_COOKIEFILE(3)\fP |
| |
| .SH DEFAULT |
| NULL |
| .SH PROTOCOLS |
| HTTP |
| .SH EXAMPLE |
| .nf |
| /* This example shows an inline import of a cookie in Netscape format. |
| You can set the cookie as HttpOnly to prevent XSS attacks by prepending |
| #HttpOnly_ to the hostname. That may be useful if the cookie will later |
| be imported by a browser. |
| */ |
| |
| #define SEP "\\t" /* Tab separates the fields */ |
| |
| char *my_cookie = |
| "example.com" /* Hostname */ |
| SEP "FALSE" /* Include subdomains */ |
| SEP "/" /* Path */ |
| SEP "FALSE" /* Secure */ |
| SEP "0" /* Expiry in epoch time format. 0 == Session */ |
| SEP "foo" /* Name */ |
| SEP "bar"; /* Value */ |
| |
| /* my_cookie is imported immediately via CURLOPT_COOKIELIST. |
| */ |
| curl_easy_setopt(curl, CURLOPT_COOKIELIST, my_cookie); |
| |
| /* The list of cookies in cookies.txt will not be imported until right |
| before a transfer is performed. Cookies in the list that have the same |
| hostname, path and name as in my_cookie are skipped. That is because |
| libcurl has already imported my_cookie and it's considered a "live" |
| cookie. A live cookie will not be replaced by one read from a file. |
| */ |
| curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "cookies.txt"); /* import */ |
| |
| /* Cookies are exported after curl_easy_cleanup is called. The server |
| may have added, deleted or modified cookies by then. The cookies that |
| were skipped on import are not exported. |
| */ |
| curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "cookies.txt"); /* export */ |
| |
| curl_easy_perform(curl); /* cookies imported from cookies.txt */ |
| |
| curl_easy_cleanup(curl); /* cookies exported to cookies.txt */ |
| .fi |
| .SH "Cookie file format" |
| The cookie file format and general cookie concepts in curl are described in |
| the HTTP-COOKIES.md file, also hosted online here: |
| https://curl.se/docs/http-cookies.html |
| .SH AVAILABILITY |
| ALL was added in 7.14.1 |
| |
| SESS was added in 7.15.4 |
| |
| FLUSH was added in 7.17.1 |
| |
| RELOAD was added in 7.39.0 |
| .SH 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. |
| .SH "SEE ALSO" |
| .BR CURLOPT_COOKIEFILE "(3), " CURLOPT_COOKIEJAR "(3), " CURLOPT_COOKIE "(3), " |
| .BR CURLINFO_COOKIELIST "(3), " |
