mirror of https://github.com/curl/curl.git synced 2025-01-06 13:44:52 +08:00

Daniel Stenberg 5a488251f7

- make DEFAULT sections less repetitive

- make historic mentions use HISTORY

- generate the protocols section on `# %PROTOCOLS%` instead of guessing
  where to put it

- generate the availability section on `# %AVAILABILITY%` instead of
  guessing where to put it

- make the protocols section more verbose

Closes #14227

2024-07-19 17:03:25 +02:00

2.2 KiB

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SPDX-License-Identifier

Title

Section

Source

See-also

Protocol

TLS-backend

Added-in

curl

CURLOPT_CAINFO

libcurl

CURLINFO_CAINFO (3)

CURLOPT_CAINFO_BLOB (3)

CURLOPT_CAPATH (3)

CURLOPT_CA_CACHE_TIMEOUT (3)

CURLOPT_SSL_VERIFYHOST (3)

CURLOPT_SSL_VERIFYPEER (3)

TLS

All

7.4.2

NAME

CURLOPT_CAINFO - path to Certificate Authority (CA) bundle

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAINFO, char *path);

DESCRIPTION

Pass a char pointer to a null-terminated string naming a file holding one or more certificates to verify the peer with.

If CURLOPT_SSL_VERIFYPEER(3) is zero and you avoid verifying the server's certificate, CURLOPT_CAINFO(3) need not even indicate an accessible file.

This option is by default set to the system path where libcurl's CA certificate bundle is assumed to be stored, as established at build time.

(iOS and macOS) When curl uses Secure Transport this option is supported. If the option is not set, then curl uses the certificates in the system and user Keychain to verify the peer.

(Schannel) This option is supported for Schannel in Windows 7 or later but we recommend not using it until Windows 8 since it works better starting then. If the option is not set, then curl uses the certificates in the Windows' store of root certificates (the default for Schannel).

The application does not have to keep the string around after setting this option.

The default value for this can be figured out with CURLINFO_CAINFO(3).

DEFAULT

Built-in system specific. When curl is built with Secure Transport or Schannel, this option is not set by default.

%PROTOCOLS%

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
    curl_easy_setopt(curl, CURLOPT_CAINFO, "/etc/certs/cabundle.pem");
    curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

HISTORY

Schannel support added in libcurl 7.60.

%AVAILABILITY%

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.

2.2 KiB Raw Blame History