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23 .TH CURLOPT_CAPATH 3 "September 10, 2017" "libcurl 7.59.0" "curl_easy_setopt options"
26 CURLOPT_CAPATH \- specify directory holding CA certificates
28 #include <curl/curl.h>
30 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAPATH, char *capath);
32 Pass a char * to a zero terminated string naming a directory holding multiple
33 CA certificates to verify the peer with. If libcurl is built against OpenSSL,
34 the certificate directory must be prepared using the openssl c_rehash utility.
35 This makes sense only when used in combination with the
36 \fICURLOPT_SSL_VERIFYPEER(3)\fP option.
38 The \fICURLOPT_CAPATH(3)\fP function apparently does not work in Windows due
39 to some limitation in openssl.
41 The application does not have to keep the string around after setting this
46 All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
49 CURL *curl = curl_easy_init();
51 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
52 curl_easy_setopt(curl, CURLOPT_CAPATH, "/etc/cert-dir");
53 ret = curl_easy_perform(curl);
54 curl_easy_cleanup(curl);
58 This option is supported by the OpenSSL, GnuTLS, PolarSSL and mbedTLS
59 (since 7.56.0) backends. The NSS backend provides the option only for
60 backward compatibility.
62 CURLE_OK if supported; or an error such as:
64 CURLE_NOT_BUILT_IN - Not supported by the SSL backend
70 .BR CURLOPT_CAINFO "(3), "
71 .BR CURLOPT_STDERR "(3), " CURLOPT_DEBUGFUNCTION "(3), "