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Diffstat (limited to 'docs/libcurl/opts/CURLOPT_ISSUERCERT_BLOB.3')
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1 files changed, 79 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLOPT_ISSUERCERT_BLOB.3 b/docs/libcurl/opts/CURLOPT_ISSUERCERT_BLOB.3 new file mode 100644 index 000000000..5fbf86df4 --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_ISSUERCERT_BLOB.3 @@ -0,0 +1,79 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al. +.\" * +.\" * This software is licensed as described in the file COPYING, which +.\" * you should have received as part of this distribution. The terms +.\" * are also available at https://curl.haxx.se/docs/copyright.html. +.\" * +.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell +.\" * copies of the Software, and permit persons to whom the Software is +.\" * furnished to do so, under the terms of the COPYING file. +.\" * +.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY +.\" * KIND, either express or implied. +.\" * +.\" ************************************************************************** +.\" +.TH CURLOPT_ISSUERCERT_BLOB 3 "24 Jun 2020" "libcurl 7.71.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_ISSUERCERT_BLOB \- issuer SSL certificate from memory blob +.SH SYNOPSIS +#include <curl/curl.h> + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ISSUERCERT_BLOB, struct curl_blob *stblob); +.SH DESCRIPTION +Pass a pointer to a curl_blob structure, which contains information (pointer +and size) about a memory block with binary data of 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 should be used in combination with the +\fICURLOPT_SSL_VERIFYPEER(3)\fP 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 (\fICURLOPT_SSL_VERIFYPEER(3)\fP +has to be set too for the check to fail). + +If the blob is initialized with the flags member of struct curl_blob set to +CURL_BLOB_COPY, the application does not have to keep the buffer around after +setting this. + +This option is an alternative to \fICURLOPT_ISSUERCERT(3)\fP which instead +expects a file name as input. +.SH DEFAULT +NULL +.SH PROTOCOLS +All TLS-based protocols +.SH EXAMPLE +.nf +CURL *curl = curl_easy_init(); +if(curl) { + struct curl_blob blob; + curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); + blob.data = certificateData; + blob.len = filesize; + blob.flags = CURL_BLOB_COPY; + curl_easy_setopt(curl, CURLOPT_ISSUERCERT_BLOB, &blob); + ret = curl_easy_perform(curl); + curl_easy_cleanup(curl); +} +.fi +.SH AVAILABILITY +Added in libcurl 7.71.0. This option is supported by the OpenSSL backends. +.SH 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. +.SH "SEE ALSO" +.BR CURLOPT_ISSUERCERT "(3)," +.BR CURLOPT_CRLFILE "(3), " CURLOPT_SSL_VERIFYPEER "(3), " |