CURLOPT_PROXY_ISSUERCERT - proxy issuer SSL certificate filename
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_ISSUERCERT, char *file);
curl_easy_setopt options CURLOPT_PROXY_ISSUERCERT(3) NAME CURLOPT_PROXY_ISSUERCERT - proxy issuer SSL certificate filename SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_ISSUERCERT, char *file); DESCRIPTION Pass a char * 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 of the the HTTPS proxy is indeed the one associated with the certificate pro- vided by the option. This additional check is useful in multi-level PKI where one needs to enforce that the peer certificate is from a spe- cific branch of the tree. This option makes sense only when used in combination with the CUR- LOPT_PROXY_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 (CUR- LOPT_PROXY_SSL_VERIFYPEER(3) has to be set too for the check to fail). The application does not have to keep the string around after setting this option. DEFAULT NULL PROTOCOLS All TLS-based protocols EXAMPLE CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); /* using an HTTPS proxy */ curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost:443"); curl_easy_setopt(curl, CURLOPT_PROXY_ISSUERCERT, "/etc/certs/cacert.pem"); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); } AVAILABILITY Added in 7.71.0. This option is supported by the OpenSSL backends. 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. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | web/curl | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO CURLOPT_PROXY_SSL_VERIFYPEER(3), CURLOPT_PROXY_SSL_VERIFYHOST(3), CUR- LOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3), NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://curl.se/down- load/curl-7.83.1.tar.bz2. Further information about this software can be found on the open source community website at http://curl.haxx.se/. libcurl 7.83.1 November 26, 2021 CURLOPT_PROXY_ISSUERCERT(3)