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https://github.com/moparisthebest/curl
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openldap: avoid NULL pointer dereferences
Follow-up to a59c33ceff
Reported-by: Patrick Monnerat
Fixes #6676
Closes #6780
This commit is contained in:
parent
3bbf62b5a4
commit
e467ea3bd9
@ -369,6 +369,9 @@ static CURLcode ldap_disconnect(struct Curl_easy *data,
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if(li) {
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if(li->ld) {
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Sockbuf *sb;
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ldap_get_option(li->ld, LDAP_OPT_SOCKBUF, &sb);
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ber_sockbuf_add_io(sb, &ldapsb_tls, LBER_SBIOD_LEVEL_TRANSPORT, NULL);
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ldap_unbind_ext(li->ld, NULL, NULL);
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li->ld = NULL;
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}
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@ -726,14 +729,18 @@ static ber_slen_t
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ldapsb_tls_read(Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
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{
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struct Curl_easy *data = sbiod->sbiod_pvt;
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struct connectdata *conn = data->conn;
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struct ldapconninfo *li = conn->proto.ldapc;
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ber_slen_t ret;
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CURLcode err = CURLE_RECV_ERROR;
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ber_slen_t ret = 0;
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if(data) {
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struct connectdata *conn = data->conn;
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if(conn) {
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struct ldapconninfo *li = conn->proto.ldapc;
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CURLcode err = CURLE_RECV_ERROR;
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ret = (li->recv)(data, FIRSTSOCKET, buf, len, &err);
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if(ret < 0 && err == CURLE_AGAIN) {
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SET_SOCKERRNO(EWOULDBLOCK);
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ret = (li->recv)(data, FIRSTSOCKET, buf, len, &err);
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if(ret < 0 && err == CURLE_AGAIN) {
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SET_SOCKERRNO(EWOULDBLOCK);
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}
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}
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}
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return ret;
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}
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@ -742,14 +749,17 @@ static ber_slen_t
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ldapsb_tls_write(Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
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{
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struct Curl_easy *data = sbiod->sbiod_pvt;
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struct connectdata *conn = data->conn;
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struct ldapconninfo *li = conn->proto.ldapc;
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ber_slen_t ret;
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CURLcode err = CURLE_SEND_ERROR;
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ret = (li->send)(data, FIRSTSOCKET, buf, len, &err);
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if(ret < 0 && err == CURLE_AGAIN) {
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SET_SOCKERRNO(EWOULDBLOCK);
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ber_slen_t ret = 0;
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if(data) {
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struct connectdata *conn = data->conn;
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if(conn) {
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struct ldapconninfo *li = conn->proto.ldapc;
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CURLcode err = CURLE_SEND_ERROR;
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ret = (li->send)(data, FIRSTSOCKET, buf, len, &err);
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if(ret < 0 && err == CURLE_AGAIN) {
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SET_SOCKERRNO(EWOULDBLOCK);
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}
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}
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}
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return ret;
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}
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