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- .TH CURLOPT_CAINFO_BLOB 3 "31 March 2021" "libcurl 7.77.0" "curl_easy_setopt options"
- .SH NAME
- CURLOPT_CAINFO_BLOB \- Certificate Authority (CA) bundle in PEM format
- .SH SYNOPSIS
- .nf
- #include <curl/curl.h>
- CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAINFO_BLOB,
- struct curl_blob *stblob);
- .fi
- .SH DESCRIPTION
- Pass a pointer to a curl_blob structure, which contains information (pointer
- and size) about a memory block with binary data of PEM encoded content holding
- one or more certificates to verify the HTTPS server with.
- If \fICURLOPT_SSL_VERIFYPEER(3)\fP is zero and you avoid verifying the
- server's certificate, \fICURLOPT_CAINFO_BLOB(3)\fP is not needed.
- This option overrides \fICURLOPT_CAINFO(3)\fP.
- .SH DEFAULT
- NULL
- .SH PROTOCOLS
- All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
- .SH EXAMPLE
- .nf
- char *strpem; /* strpem must point to a PEM string */
- CURL *curl = curl_easy_init();
- if(curl) {
- struct curl_blob blob;
- curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
- blob.data = strpem;
- blob.len = strlen(strpem);
- blob.flags = CURL_BLOB_COPY;
- curl_easy_setopt(curl, CURLOPT_CAINFO_BLOB, &blob);
- ret = curl_easy_perform(curl);
- curl_easy_cleanup(curl);
- }
- .fi
- .SH AVAILABILITY
- Added in 7.77.0.
- This option is supported by the BearSSL (since 7.79.0), mbedTLS (since 7.81.0),
- rustls (since 7.82.0), OpenSSL, Secure Transport and Schannel 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_CAINFO "(3), " CURLOPT_CAPATH "(3), "
- .BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "
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