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23 .TH CURLOPT_CAINFO 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
25 CURLOPT_CAINFO \- path to Certificate Authority (CA) bundle
27 #include <curl/curl.h>
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAINFO, char *path);
31 Pass a char * to a zero terminated string naming a file holding one or more
32 certificates to verify the peer with.
34 If \fICURLOPT_SSL_VERIFYPEER(3)\fP is zero and you avoid verifying the
35 server's certificate, \fICURLOPT_CAINFO(3)\fP need not even indicate an
38 This option is by default set to the system path where libcurl's cacert bundle
39 is assumed to be stored, as established at build time.
41 If curl is built against the NSS SSL library, the NSS PEM PKCS#11 module
42 (libnsspem.so) needs to be available for this option to work properly.
44 Built-in system specific
46 All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
50 For SSL engines that don't support certificate files the CURLOPT_CAINFO option
51 is ignored. Refer to https://curl.haxx.se/docs/ssl-compared.html
53 Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
54 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
56 .BR CURLOPT_CAPATH "(3), "
57 .BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "