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57 lines
1.6 KiB
Groff
57 lines
1.6 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_AUTOREFERER.md
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.TH CURLOPT_AUTOREFERER 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_AUTOREFERER \- automatically update the referer header
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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_AUTOREFERER, long autorefer);
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.fi
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.SH DESCRIPTION
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Pass a long parameter set to 1 to enable this. When enabled, libcurl
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automatically sets the Referer: header field in HTTP requests to the full URL
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when it follows a Location: redirect to a new destination.
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The automatic referer is set to the full previous URL even when redirects are
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done cross\-origin or following redirects to insecure protocols. This is
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considered a minor privacy leak by some.
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With \fICURLINFO_REFERER(3)\fP, applications can extract the actually used
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referer header after the transfer.
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.SH DEFAULT
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0, disabled
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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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/* follow redirects */
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curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
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/* set Referer: automatically when following redirects */
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curl_easy_setopt(curl, CURLOPT_AUTOREFERER, 1L);
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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 AVAILABILITY
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Along with HTTP
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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 CURLINFO_EFFECTIVE_URL (3),
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.BR CURLINFO_REDIRECT_URL (3),
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.BR CURLINFO_REFERER (3),
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.BR CURLOPT_FOLLOWLOCATION (3),
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.BR CURLOPT_REFERER (3)
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