CURLOPT_SSH_AUTH_TYPES(3) Library Functions Manual CURLOPT_SSH_AUTH_TYPES(3)

CURLOPT_SSH_AUTH_TYPES - auth types for SFTP and SCP

#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_AUTH_TYPES, long bitmask);

Pass a long set to a bitmask consisting of one or more of CURLSSH_AUTH_PUBLICKEY, CURLSSH_AUTH_PASSWORD, CURLSSH_AUTH_HOST, CURLSSH_AUTH_KEYBOARD and CURLSSH_AUTH_AGENT.

Set CURLSSH_AUTH_ANY to let libcurl pick a suitable one. Currently CURLSSH_AUTH_HOST has no effect. If CURLSSH_AUTH_AGENT is used, libcurl attempts to connect to ssh-agent or pageant and let the agent attempt the authentication.

CURLSSH_AUTH_ANY (all available)

SCP and SFTP

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/file");
    curl_easy_setopt(curl, CURLOPT_SSH_AUTH_TYPES,
                     CURLSSH_AUTH_PUBLICKEY | CURLSSH_AUTH_KEYBOARD);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

CURLSSH_AUTH_HOST was added in 7.16.1, CURLSSH_AUTH_AGENT was added in 7.28.0

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

CURLOPT_SSH_HOST_PUBLIC_KEY_MD5(3), CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256(3), CURLOPT_SSH_PUBLIC_KEYFILE(3)

2024-05-22 libcurl