78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
|
---
|
||
|
|
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
|
||
|
|
SPDX-License-Identifier: curl
|
||
|
|
Title: CURLOPT_ISSUERCERT
|
||
|
|
Section: 3
|
||
|
|
Source: libcurl
|
||
|
|
See-also:
|
||
|
|
- CURLOPT_CRLFILE (3)
|
||
|
|
- CURLOPT_SSL_VERIFYHOST (3)
|
||
|
|
- CURLOPT_SSL_VERIFYPEER (3)
|
||
|
|
---
|
||
|
|
|
||
|
|
# NAME
|
||
|
|
|
||
|
|
CURLOPT_ISSUERCERT - issuer SSL certificate filename
|
||
|
|
|
||
|
|
# SYNOPSIS
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
#include <curl/curl.h>
|
||
|
|
|
||
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ISSUERCERT, char *file);
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# DESCRIPTION
|
||
|
|
|
||
|
|
Pass a char pointer to a null-terminated string naming a *file* holding a CA
|
||
|
|
certificate in PEM format. If the option is set, an additional check against
|
||
|
|
the peer certificate is performed to verify the issuer is indeed the one
|
||
|
|
associated with the certificate provided by the option. This additional check
|
||
|
|
is useful in multi-level PKI where one needs to enforce that the peer
|
||
|
|
certificate is from a specific branch of the tree.
|
||
|
|
|
||
|
|
This option makes sense only when used in combination with the
|
||
|
|
CURLOPT_SSL_VERIFYPEER(3) option. Otherwise, the result of the check is
|
||
|
|
not considered as failure.
|
||
|
|
|
||
|
|
A specific error code (CURLE_SSL_ISSUER_ERROR) is defined with the option,
|
||
|
|
which is returned if the setup of the SSL/TLS session has failed due to a
|
||
|
|
mismatch with the issuer of peer certificate (CURLOPT_SSL_VERIFYPEER(3)
|
||
|
|
has to be set too for the check to fail). (Added in 7.19.0)
|
||
|
|
|
||
|
|
The application does not have to keep the string around after setting this
|
||
|
|
option.
|
||
|
|
|
||
|
|
# DEFAULT
|
||
|
|
|
||
|
|
NULL
|
||
|
|
|
||
|
|
# PROTOCOLS
|
||
|
|
|
||
|
|
All TLS-based protocols
|
||
|
|
|
||
|
|
# EXAMPLE
|
||
|
|
|
||
|
|
~~~c
|
||
|
|
int main(void)
|
||
|
|
{
|
||
|
|
CURL *curl = curl_easy_init();
|
||
|
|
if(curl) {
|
||
|
|
CURLcode res;
|
||
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
|
||
|
|
curl_easy_setopt(curl, CURLOPT_ISSUERCERT, "/etc/certs/cacert.pem");
|
||
|
|
res = curl_easy_perform(curl);
|
||
|
|
curl_easy_cleanup(curl);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
~~~
|
||
|
|
|
||
|
|
# AVAILABILITY
|
||
|
|
|
||
|
|
If built TLS enabled
|
||
|
|
|
||
|
|
# 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.
|