1 /*
2  * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 #include <openssl/opensslconf.h>
11 
12 #include <openssl/ssl.h>
13 #include <openssl/srp.h>
14 
15 #define PORT            "4433"
16 #define PROTOCOL        "tcp"
17 
18 #define SSL_VERSION_ALLOWS_RENEGOTIATION(s) \
19     (SSL_is_dtls(s) || (SSL_version(s) < TLS1_3_VERSION))
20 
21 typedef int (*do_server_cb)(int s, int stype, int prot, unsigned char *context);
22 int report_server_accept(BIO *out, int asock, int with_address, int with_pid);
23 int do_server(int *accept_sock, const char *host, const char *port,
24               int family, int type, int protocol, do_server_cb cb,
25               unsigned char *context, int naccept, BIO *bio_s_out);
26 
27 int verify_callback(int ok, X509_STORE_CTX *ctx);
28 
29 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file);
30 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
31                        STACK_OF(X509) *chain, int build_chain);
32 int ssl_print_sigalgs(BIO *out, SSL *s);
33 int ssl_print_point_formats(BIO *out, SSL *s);
34 int ssl_print_groups(BIO *out, SSL *s, int noshared);
35 int ssl_print_tmp_key(BIO *out, SSL *s);
36 int init_client(int *sock, const char *host, const char *port,
37                 const char *bindhost, const char *bindport,
38                 int family, int type, int protocol);
39 int should_retry(int i);
40 void do_ssl_shutdown(SSL *ssl);
41 
42 long bio_dump_callback(BIO *bio, int cmd, const char *argp, size_t len,
43                        int argi, long argl, int ret, size_t *processed);
44 
45 void apps_ssl_info_callback(const SSL *s, int where, int ret);
46 void msg_cb(int write_p, int version, int content_type, const void *buf,
47             size_t len, SSL *ssl, void *arg);
48 void tlsext_cb(SSL *s, int client_server, int type, const unsigned char *data,
49                int len, void *arg);
50 
51 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
52                              unsigned int *cookie_len);
53 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
54                            unsigned int cookie_len);
55 
56 #ifdef __VMS                     /* 31 char symbol name limit */
57 # define generate_stateless_cookie_callback      generate_stateless_cookie_cb
58 # define verify_stateless_cookie_callback        verify_stateless_cookie_cb
59 #endif
60 
61 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
62                                        size_t *cookie_len);
63 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
64                                      size_t cookie_len);
65 
66 typedef struct ssl_excert_st SSL_EXCERT;
67 
68 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc);
69 void ssl_excert_free(SSL_EXCERT *exc);
70 int args_excert(int option, SSL_EXCERT **pexc);
71 int load_excert(SSL_EXCERT **pexc);
72 void print_verify_detail(SSL *s, BIO *bio);
73 void print_ssl_summary(SSL *s);
74 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str, SSL_CTX *ctx);
75 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls,
76                      int crl_download);
77 int ssl_load_stores(SSL_CTX *ctx, const char *vfyCApath,
78                     const char *vfyCAfile, const char *vfyCAstore,
79                     const char *chCApath, const char *chCAfile,
80                     const char *chCAstore, STACK_OF(X509_CRL) *crls,
81                     int crl_download);
82 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose);
83 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file);
84 void print_ca_names(BIO *bio, SSL *s);
85 void ssl_print_secure_renegotiation_notes(BIO *bio, SSL *s);
86 
87 #ifndef OPENSSL_NO_SRP
88 /* The client side SRP context that we pass to all SRP related callbacks */
89 typedef struct srp_arg_st {
90     char *srppassin;
91     char *srplogin;
92     int msg;                    /* copy from c_msg */
93     int debug;                  /* copy from c_debug */
94     int amp;                    /* allow more groups */
95     int strength;               /* minimal size for N */
96 } SRP_ARG;
97 
98 int set_up_srp_arg(SSL_CTX *ctx, SRP_ARG *srp_arg, int srp_lateuser, int c_msg,
99                    int c_debug);
100 void set_up_dummy_srp(SSL_CTX *ctx);
101 
102 /* The server side SRP context that we pass to all SRP related callbacks */
103 typedef struct srpsrvparm_st {
104     char *login;
105     SRP_VBASE *vb;
106     SRP_user_pwd *user;
107 } srpsrvparm;
108 
109 int set_up_srp_verifier_file(SSL_CTX *ctx, srpsrvparm *srp_callback_parm,
110                              char *srpuserseed, char *srp_verifier_file);
111 void lookup_srp_user(srpsrvparm *srp_callback_parm, BIO *bio_s_out);
112 #endif /* OPENSSL_NO_SRP */
113