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creds: hold credentials

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Authorizdation credentials are kept in `struct Curl_creds`. This contains:

* `user`: the username, maybe the empty string
* `passwd`: the password, maybe the empty string
* `sasl_authzid`: the SASL authz value, maybe the empty string
* `oauth_bearer`: the OAUTH bearer token, maybe the empty string
* `source`: where the credentials from from
* `refcount`: a reference counter to link/unkink creds

A `creds` with all values empty is equivalent to NULL, e.g. no `creds`
instance. With reference counting, `creds` can be linked/unlinked
in several places.

See docs/internals/CREDENTIALS.md for use.

Closes #21548
This commit is contained in:
Stefan Eissing 2026-05-11 14:25:52 +02:00 • committed by Daniel Stenberg
parent a32a2b0b77
commit 8f71d0fde5
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47 changed files with 1138 additions and 962 deletions
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13
lib/vssh/libssh.c
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@ -633,7 +633,8 @@ restart:
if(nprompts != 1)
return SSH_ERROR;
rc = ssh_userauth_kbdint_setanswer(sshc->ssh_session, 0, conn->passwd);
rc = ssh_userauth_kbdint_setanswer(sshc->ssh_session, 0,
Curl_creds_passwd(conn->creds));
if(rc < 0)
return SSH_ERROR;
@ -920,7 +921,8 @@ static int myssh_in_AUTH_PASS_INIT(struct Curl_easy *data,
static int myssh_in_AUTH_PASS(struct Curl_easy *data,
struct ssh_conn *sshc)
{
int rc = ssh_userauth_password(sshc->ssh_session, NULL, data->conn->passwd);
int rc = ssh_userauth_password(sshc->ssh_session, NULL,
Curl_creds_passwd(data->conn->creds));
if(rc == SSH_AUTH_AGAIN)
return SSH_AGAIN;
else if(rc == SSH_AUTH_SUCCESS) {
@ -2571,9 +2573,10 @@ static CURLcode myssh_connect(struct Curl_easy *data, bool *done)
return CURLE_FAILED_INIT;
}
if(conn->user && conn->user[0] != '\0') {
infof(data, "User: %s", conn->user);
rc = ssh_options_set(sshc->ssh_session, SSH_OPTIONS_USER, conn->user);
if(Curl_creds_has_user(conn->creds)) {
infof(data, "User: %s", conn->creds->user);
rc = ssh_options_set(sshc->ssh_session, SSH_OPTIONS_USER,
conn->creds->user);
if(rc != SSH_OK) {
failf(data, "Could not set user");
return CURLE_FAILED_INIT;