2024-03-15 20:55:33 -06:00
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.\" generated by cd2nroff 0.1 from CURLOPT_CAINFO.md
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2024-07-29 18:00:04 -06:00
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.TH CURLOPT_CAINFO 3 "2024-07-29" libcurl
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2024-03-15 20:55:33 -06:00
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.SH NAME
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CURLOPT_CAINFO \- path to Certificate Authority (CA) bundle
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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_CAINFO, char *path);
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.fi
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.SH DESCRIPTION
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Pass a char pointer to a null\-terminated string naming a file holding one or
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more certificates to verify the peer with.
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If \fICURLOPT_SSL_VERIFYPEER(3)\fP is zero and you avoid verifying the
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server\(aqs certificate, \fICURLOPT_CAINFO(3)\fP need not even indicate an
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accessible file.
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This option is by default set to the system path where libcurl\(aqs CA
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certificate bundle is assumed to be stored, as established at build time.
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(iOS and macOS) When curl uses Secure Transport this option is supported. If
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the option is not set, then curl uses the certificates in the system and user
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Keychain to verify the peer.
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(Schannel) This option is supported for Schannel in Windows 7 or later but we
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recommend not using it until Windows 8 since it works better starting then.
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If the option is not set, then curl uses the certificates in the Windows\(aq
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store of root certificates (the default for Schannel).
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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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The default value for this can be figured out with \fICURLINFO_CAINFO(3)\fP.
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.SH DEFAULT
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Built\-in system specific. When curl is built with Secure Transport or
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Schannel, this option is not set by default.
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.SH PROTOCOLS
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2024-07-29 18:00:04 -06:00
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This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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2024-03-30 12:28:04 -06:00
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All TLS backends support this option.
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2024-03-15 20:55:33 -06:00
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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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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_CAINFO, "/etc/certs/cabundle.pem");
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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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2024-07-29 18:00:04 -06:00
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.SH HISTORY
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2024-03-30 12:28:04 -06:00
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Schannel support added in libcurl 7.60.
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2024-07-29 18:00:04 -06:00
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.SH AVAILABILITY
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Added in curl 7.4.2
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
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CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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.SH SEE ALSO
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.BR CURLINFO_CAINFO (3),
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.BR CURLOPT_CAINFO_BLOB (3),
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.BR CURLOPT_CAPATH (3),
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.BR CURLOPT_CA_CACHE_TIMEOUT (3),
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.BR CURLOPT_SSL_VERIFYHOST (3),
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.BR CURLOPT_SSL_VERIFYPEER (3)
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