/*
 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <openssl/opensslconf.h>

#include <openssl/ssl.h>
#include <openssl/srp.h>

#define PORT            "4433"
#define PROTOCOL        "tcp"

#define SSL_VERSION_ALLOWS_RENEGOTIATION(s) \
    (SSL_is_dtls(s) || (SSL_version(s) < TLS1_3_VERSION))

typedef int (*do_server_cb)(int s, int stype, int prot, unsigned char *context);
void get_sock_info_address(int asock, char **hostname, char **service);
int report_server_accept(BIO *out, int asock, int with_address, int with_pid);
int do_server(int *accept_sock, const char *host, const char *port,
              int family, int type, int protocol, do_server_cb cb,
              unsigned char *context, int naccept, BIO *bio_s_out,
              int tfo);
int verify_callback(int ok, X509_STORE_CTX *ctx);

int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file);
int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
                       STACK_OF(X509) *chain, int build_chain);
int ssl_print_sigalgs(BIO *out, SSL *s);
int ssl_print_point_formats(BIO *out, SSL *s);
int ssl_print_groups(BIO *out, SSL *s, int noshared);
int ssl_print_tmp_key(BIO *out, SSL *s);
int init_client(int *sock, const char *host, const char *port,
                const char *bindhost, const char *bindport,
                int family, int type, int protocol, int tfo,
                BIO_ADDR **ba_ret);
int should_retry(int i);
void do_ssl_shutdown(SSL *ssl);

long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
                       int argi, long argl, int ret, size_t *processed);

void apps_ssl_info_callback(const SSL *s, int where, int ret);
void msg_cb(int write_p, int version, int content_type, const void *buf,
            size_t len, SSL *ssl, void *arg);
void tlsext_cb(SSL *s, int client_server, int type, const unsigned char *data,
               int len, void *arg);

int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
                             unsigned int *cookie_len);
int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
                           unsigned int cookie_len);

#ifdef __VMS                     /* 31 char symbol name limit */
# define generate_stateless_cookie_callback      generate_stateless_cookie_cb
# define verify_stateless_cookie_callback        verify_stateless_cookie_cb
#endif

int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
                                       size_t *cookie_len);
int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
                                     size_t cookie_len);

typedef struct ssl_excert_st SSL_EXCERT;

void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc);
void ssl_excert_free(SSL_EXCERT *exc);
int args_excert(int option, SSL_EXCERT **pexc);
int load_excert(SSL_EXCERT **pexc);
void print_verify_detail(SSL *s, BIO *bio);
void print_ssl_summary(SSL *s);
int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str, SSL_CTX *ctx);
int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls,
                     int crl_download);
int ssl_load_stores(SSL_CTX *ctx, const char *vfyCApath,
                    const char *vfyCAfile, const char *vfyCAstore,
                    const char *chCApath, const char *chCAfile,
                    const char *chCAstore, STACK_OF(X509_CRL) *crls,
                    int crl_download);
void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose);
int set_keylog_file(SSL_CTX *ctx, const char *keylog_file);
void print_ca_names(BIO *bio, SSL *s);
void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s);

#ifndef OPENSSL_NO_SRP
/* The client side SRP context that we pass to all SRP related callbacks */
typedef struct srp_arg_st {
    char *srppassin;
    char *srplogin;
    int msg;                    /* copy from c_msg */
    int debug;                  /* copy from c_debug */
    int amp;                    /* allow more groups */
    int strength;               /* minimal size for N */
} SRP_ARG;

int set_up_srp_arg(SSL_CTX *ctx, SRP_ARG *srp_arg, int srp_lateuser, int c_msg,
                   int c_debug);
void set_up_dummy_srp(SSL_CTX *ctx);

/* The server side SRP context that we pass to all SRP related callbacks */
typedef struct srpsrvparm_st {
    char *login;
    SRP_VBASE *vb;
    SRP_user_pwd *user;
} srpsrvparm;

int set_up_srp_verifier_file(SSL_CTX *ctx, srpsrvparm *srp_callback_parm,
                             char *srpuserseed, char *srp_verifier_file);
void lookup_srp_user(srpsrvparm *srp_callback_parm, BIO *bio_s_out);
#endif /* OPENSSL_NO_SRP */