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diff --git a/fluent-bit/lib/librdkafka-2.1.0/src/rdkafka_sasl_int.h b/fluent-bit/lib/librdkafka-2.1.0/src/rdkafka_sasl_int.h
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+/*
+ * librdkafka - The Apache Kafka C/C++ library
+ *
+ * Copyright (c) 2015 Magnus Edenhill
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RDKAFKA_SASL_INT_H_
+#define _RDKAFKA_SASL_INT_H_
+
+struct rd_kafka_sasl_provider {
+ const char *name;
+
+ /** Per client-instance (rk) initializer */
+ int (*init)(rd_kafka_t *rk, char *errstr, size_t errstr_size);
+
+ /** Per client-instance (rk) destructor */
+ void (*term)(rd_kafka_t *rk);
+
+ /** Returns rd_true if provider is ready to be used, else rd_false */
+ rd_bool_t (*ready)(rd_kafka_t *rk);
+
+ int (*client_new)(rd_kafka_transport_t *rktrans,
+ const char *hostname,
+ char *errstr,
+ size_t errstr_size);
+
+ int (*recv)(struct rd_kafka_transport_s *s,
+ const void *buf,
+ size_t size,
+ char *errstr,
+ size_t errstr_size);
+ void (*close)(struct rd_kafka_transport_s *);
+
+ void (*broker_init)(rd_kafka_broker_t *rkb);
+ void (*broker_term)(rd_kafka_broker_t *rkb);
+
+ int (*conf_validate)(rd_kafka_t *rk, char *errstr, size_t errstr_size);
+};
+
+#ifdef _WIN32
+extern const struct rd_kafka_sasl_provider rd_kafka_sasl_win32_provider;
+#endif
+
+#if WITH_SASL_CYRUS
+extern const struct rd_kafka_sasl_provider rd_kafka_sasl_cyrus_provider;
+void rd_kafka_sasl_cyrus_global_term(void);
+int rd_kafka_sasl_cyrus_global_init(void);
+#endif
+
+extern const struct rd_kafka_sasl_provider rd_kafka_sasl_plain_provider;
+
+#if WITH_SASL_SCRAM
+extern const struct rd_kafka_sasl_provider rd_kafka_sasl_scram_provider;
+#endif
+
+#if WITH_SASL_OAUTHBEARER
+extern const struct rd_kafka_sasl_provider rd_kafka_sasl_oauthbearer_provider;
+#endif
+
+void rd_kafka_sasl_auth_done(rd_kafka_transport_t *rktrans);
+int rd_kafka_sasl_send(rd_kafka_transport_t *rktrans,
+ const void *payload,
+ int len,
+ char *errstr,
+ size_t errstr_size);
+
+#endif /* _RDKAFKA_SASL_INT_H_ */