Adding in curl and openssl repos

openssl-3.4.2/demos/sslecho/A-SSL-Docs.txt

@@ -0,0 +1,20 @@
+Useful Links:
+
+OpenSSL API Documentation: https://www.openssl.org/docs
+
+Github: https://github.com/openssl/openssl
+
+OpenSSL Wiki: https://github.com/openssl/openssl/wiki
+
+Original Simple Server: https://github.com/openssl/openssl/wiki/Simple_TLS_Server
+
+---------------------------------------------------------------
+
+Generate self signed cert and key 'pem' files (good for 10 years):
+
+openssl req -newkey rsa:4096 -x509 -sha256 -days 3650 -nodes -out cert.pem -keyout key.pem
+
+You can just hit carriage returns to accept the default values, except for "Common Name"; you
+should enter 'localhost', or an actual hostname.
+
+The same keys can be used for both communicating instances; same or different machines.

openssl-3.4.2/demos/sslecho/Makefile

@@ -0,0 +1,25 @@
+#
+# To run the demos when linked with a shared library (default) ensure that
+# libcrypto and libssl are on the library path. For example:
+#
+#    LD_LIBRARY_PATH=../.. ./sslecho
+
+TESTS = sslecho
+
+CFLAGS  = -I../../include -g -Wall
+LDFLAGS = -L../..
+LDLIBS  = -lssl -lcrypto
+
+all: $(TESTS)
+
+sslecho: main.o
+
+$(TESTS):
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< $(LDLIBS)
+
+clean:
+	$(RM) $(TESTS) *.o
+
+test: all
+	@echo "\nSSL Echo tests:"
+	@echo "skipped"

openssl-3.4.2/demos/sslecho/README.md

@@ -0,0 +1,26 @@
+OpenSSL Simple Echo Client/Server
+=================================
+
+This project implements a simple echo client/server.
+
+It is a console application, with command line parameters determining the mode
+of operation (client or server). Start it with no parameters to see usage.
+
+The server code was adapted from the Simple TLS Server on the OpenSSL Wiki.
+The server code was modified to perform the echo function, and client code
+was added to open a connection with the server and to send keyboard input
+to the server.
+
+The new client code illustrates that:
+
+- Connection to the SSL server starts as a standard TCP 'connect'.
+- Once connected with TCP, the client 'upgrades' to SSL using
+  SSL_connect().
+- When the SSL connection completes, data is sent and received using
+  SSL_write() and SSL_read().
+- Pretty simple.
+
+The cert.pem and key.pem files included are self signed certificates with the
+"Common Name" of 'localhost'.
+
+Best to create the 'pem' files using an actual hostname.

openssl-3.4.2/demos/sslecho/build.info

@@ -0,0 +1,11 @@
+#
+# To run the demos when linked with a shared library (default) ensure that
+# libcrypto and libssl are on the library path. For example:
+#
+#    LD_LIBRARY_PATH=../.. ./sslecho
+
+PROGRAMS{noinst} = sslecho
+
+INCLUDE[sslecho]=../../include
+SOURCE[sslecho]=main.c
+DEPEND[sslecho]=../../libcrypto ../../libssl

openssl-3.4.2/demos/sslecho/cert.pem

@@ -0,0 +1,32 @@
+-----BEGIN CERTIFICATE-----
+MIIFkzCCA3ugAwIBAgIUQJ8FQFwuVg1UlnIBam0+liL0RSQwDQYJKoZIhvcNAQEL
+BQAwWTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoM
+GEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDESMBAGA1UEAwwJbG9jYWxob3N0MB4X
+DTIyMDIwMjE0MzgzNloXDTMyMDEzMTE0MzgzNlowWTELMAkGA1UEBhMCQVUxEzAR
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+LcxzStnQcbTqqmdpNVlMv31YpOk5nel5RY3UmwKbQkix6UAo/CJmC1Q3yLU8uG5O
+6j7vS8t0wOYcVTAA845JU8C7V5yy6UeCB9F2oGDgVwCe6U8bzTIoCDnkzIKO7LlS
+734KP+fNK9LatNzpPQWW+1SK4XEZBNLOMePwu560GLVzPgr9ji0z83E+0yAcWrAO
+4gKT+/h3Ep1Ut73daskFAvNJFFt/5Rm+xZECHrxRkXqW1AN/2eXX
+-----END CERTIFICATE-----

openssl-3.4.2/demos/sslecho/key.pem

@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
+MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQDI9l9NtH2VW+kf
+EgZHOlhvWBgWM9nvJNdhlUoSpAtXHD87Yvfa59qU4OJgmv+kq73771P4muZGeidi
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++PZldAcYstB/DyViO9kOCEIWI/SjxwIDAQABAoICAH51SpODOGN8ar36gajgtjWa
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+DDFU5HazFnn1G0/rg2SnKHTRLV2E9g==
+-----END PRIVATE KEY-----

openssl-3.4.2/demos/sslecho/main.c

@@ -0,0 +1,374 @@
+/*
+ *  Copyright 2022-2025 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 <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#if !defined(OPENSSL_SYS_WINDOWS)
+#include <unistd.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#else
+#include <winsock.h>
+#endif
+
+static const int server_port = 4433;
+
+typedef unsigned char   flag;
+#define true            1
+#define false           0
+
+/*
+ * This flag won't be useful until both accept/read (TCP & SSL) methods
+ * can be called with a timeout. TBD.
+ */
+static volatile flag server_running = true;
+
+static int create_socket(flag isServer)
+{
+    int s;
+    int optval = 1;
+    struct sockaddr_in addr;
+
+    s = socket(AF_INET, SOCK_STREAM, 0);
+    if (s < 0) {
+        perror("Unable to create socket");
+        exit(EXIT_FAILURE);
+    }
+
+    if (isServer) {
+        addr.sin_family = AF_INET;
+        addr.sin_port = htons(server_port);
+        addr.sin_addr.s_addr = INADDR_ANY;
+
+        /* Reuse the address; good for quick restarts */
+        if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval))
+                < 0) {
+            perror("setsockopt(SO_REUSEADDR) failed");
+            exit(EXIT_FAILURE);
+        }
+
+        if (bind(s, (struct sockaddr*) &addr, sizeof(addr)) < 0) {
+            perror("Unable to bind");
+            exit(EXIT_FAILURE);
+        }
+
+        if (listen(s, 1) < 0) {
+            perror("Unable to listen");
+            exit(EXIT_FAILURE);
+        }
+    }
+
+    return s;
+}
+
+static SSL_CTX *create_context(flag isServer)
+{
+    const SSL_METHOD *method;
+    SSL_CTX *ctx;
+
+    if (isServer)
+        method = TLS_server_method();
+    else
+        method = TLS_client_method();
+
+    ctx = SSL_CTX_new(method);
+    if (ctx == NULL) {
+        perror("Unable to create SSL context");
+        ERR_print_errors_fp(stderr);
+        exit(EXIT_FAILURE);
+    }
+
+    return ctx;
+}
+
+static void configure_server_context(SSL_CTX *ctx)
+{
+    /* Set the key and cert */
+    if (SSL_CTX_use_certificate_chain_file(ctx, "cert.pem") <= 0) {
+        ERR_print_errors_fp(stderr);
+        exit(EXIT_FAILURE);
+    }
+
+    if (SSL_CTX_use_PrivateKey_file(ctx, "key.pem", SSL_FILETYPE_PEM) <= 0) {
+        ERR_print_errors_fp(stderr);
+        exit(EXIT_FAILURE);
+    }
+}
+
+static void configure_client_context(SSL_CTX *ctx)
+{
+    /*
+     * Configure the client to abort the handshake if certificate verification
+     * fails
+     */
+    SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
+    /*
+     * In a real application you would probably just use the default system certificate trust store and call:
+     *     SSL_CTX_set_default_verify_paths(ctx);
+     * In this demo though we are using a self-signed certificate, so the client must trust it directly.
+     */
+    if (!SSL_CTX_load_verify_locations(ctx, "cert.pem", NULL)) {
+        ERR_print_errors_fp(stderr);
+        exit(EXIT_FAILURE);
+    }
+}
+
+static void usage(void)
+{
+    printf("Usage: sslecho s\n");
+    printf("       --or--\n");
+    printf("       sslecho c ip\n");
+    printf("       c=client, s=server, ip=dotted ip of server\n");
+    exit(EXIT_FAILURE);
+}
+
+#define BUFFERSIZE 1024
+int main(int argc, char **argv)
+{
+    flag isServer;
+    int result;
+
+    SSL_CTX *ssl_ctx = NULL;
+    SSL *ssl = NULL;
+
+    int server_skt = -1;
+    int client_skt = -1;
+
+    /* used by fgets */
+    char buffer[BUFFERSIZE];
+    char *txbuf;
+
+    char rxbuf[128];
+    size_t rxcap = sizeof(rxbuf);
+    int rxlen;
+
+    char *rem_server_ip = NULL;
+
+    struct sockaddr_in addr;
+#if defined(OPENSSL_SYS_CYGWIN) || defined(OPENSSL_SYS_WINDOWS)
+    int addr_len = sizeof(addr);
+#else
+    unsigned int addr_len = sizeof(addr);
+#endif
+
+#if !defined (OPENSSL_SYS_WINDOWS)
+    /* ignore SIGPIPE so that server can continue running when client pipe closes abruptly */
+    signal(SIGPIPE, SIG_IGN);
+#endif
+
+    /* Splash */
+    printf("\nsslecho : Simple Echo Client/Server : %s : %s\n\n", __DATE__,
+    __TIME__);
+
+    /* Need to know if client or server */
+    if (argc < 2) {
+        usage();
+        /* NOTREACHED */
+    }
+    isServer = (argv[1][0] == 's') ? true : false;
+    /* If client get remote server address (could be 127.0.0.1) */
+    if (!isServer) {
+        if (argc != 3) {
+            usage();
+            /* NOTREACHED */
+        }
+        rem_server_ip = argv[2];
+    }
+
+    /* Create context used by both client and server */
+    ssl_ctx = create_context(isServer);
+
+    /* If server */
+    if (isServer) {
+
+        printf("We are the server on port: %d\n\n", server_port);
+
+        /* Configure server context with appropriate key files */
+        configure_server_context(ssl_ctx);
+
+        /* Create server socket; will bind with server port and listen */
+        server_skt = create_socket(true);
+
+        /*
+         * Loop to accept clients.
+         * Need to implement timeouts on TCP & SSL connect/read functions
+         * before we can catch a CTRL-C and kill the server.
+         */
+        while (server_running) {
+            /* Wait for TCP connection from client */
+            client_skt = accept(server_skt, (struct sockaddr*) &addr,
+                    &addr_len);
+            if (client_skt < 0) {
+                perror("Unable to accept");
+                exit(EXIT_FAILURE);
+            }
+
+            printf("Client TCP connection accepted\n");
+
+            /* Create server SSL structure using newly accepted client socket */
+            ssl = SSL_new(ssl_ctx);
+            if (!SSL_set_fd(ssl, client_skt)) {
+                ERR_print_errors_fp(stderr);
+                exit(EXIT_FAILURE);
+            }
+
+            /* Wait for SSL connection from the client */
+            if (SSL_accept(ssl) <= 0) {
+                ERR_print_errors_fp(stderr);
+                server_running = false;
+            } else {
+
+                printf("Client SSL connection accepted\n\n");
+
+                /* Echo loop */
+                while (true) {
+                    /* Get message from client; will fail if client closes connection */
+                    if ((rxlen = SSL_read(ssl, rxbuf, rxcap)) <= 0) {
+                        if (rxlen == 0) {
+                            printf("Client closed connection\n");
+                        } else {
+                            printf("SSL_read returned %d\n", rxlen);
+                        }
+                        ERR_print_errors_fp(stderr);
+                        break;
+                    }
+                    /* Insure null terminated input */
+                    rxbuf[rxlen] = 0;
+                    /* Look for kill switch */
+                    if (strcmp(rxbuf, "kill\n") == 0) {
+                        /* Terminate...with extreme prejudice */
+                        printf("Server received 'kill' command\n");
+                        server_running = false;
+                        break;
+                    }
+                    /* Show received message */
+                    printf("Received: %s", rxbuf);
+                    /* Echo it back */
+                    if (SSL_write(ssl, rxbuf, rxlen) <= 0) {
+                        ERR_print_errors_fp(stderr);
+                    }
+                }
+            }
+            if (server_running) {
+                /* Cleanup for next client */
+                SSL_shutdown(ssl);
+                SSL_free(ssl);
+                close(client_skt);
+                /*
+                 * Set client_skt to -1 to avoid double close when
+                 * server_running become false before next accept
+                 */
+                client_skt = -1;
+            }
+        }
+        printf("Server exiting...\n");
+    }
+    /* Else client */
+    else {
+
+        printf("We are the client\n\n");
+
+        /* Configure client context so we verify the server correctly */
+        configure_client_context(ssl_ctx);
+
+        /* Create "bare" socket */
+        client_skt = create_socket(false);
+        /* Set up connect address */
+        addr.sin_family = AF_INET;
+        inet_pton(AF_INET, rem_server_ip, &addr.sin_addr.s_addr);
+        addr.sin_port = htons(server_port);
+        /* Do TCP connect with server */
+        if (connect(client_skt, (struct sockaddr*) &addr, sizeof(addr)) != 0) {
+            perror("Unable to TCP connect to server");
+            goto exit;
+        } else {
+            printf("TCP connection to server successful\n");
+        }
+
+        /* Create client SSL structure using dedicated client socket */
+        ssl = SSL_new(ssl_ctx);
+        if (!SSL_set_fd(ssl, client_skt)) {
+            ERR_print_errors_fp(stderr);
+            goto exit;
+        }
+        /* Set hostname for SNI */
+        SSL_set_tlsext_host_name(ssl, rem_server_ip);
+        /* Configure server hostname check */
+        if (!SSL_set1_host(ssl, rem_server_ip)) {
+            ERR_print_errors_fp(stderr);
+            goto exit;
+        }
+
+        /* Now do SSL connect with server */
+        if (SSL_connect(ssl) == 1) {
+
+            printf("SSL connection to server successful\n\n");
+
+            /* Loop to send input from keyboard */
+            while (true) {
+                /* Get a line of input */
+                memset(buffer, 0, BUFFERSIZE);
+                txbuf = fgets(buffer, BUFFERSIZE, stdin);
+
+                /* Exit loop on error */
+                if (txbuf == NULL) {
+                    break;
+                }
+                /* Exit loop if just a carriage return */
+                if (txbuf[0] == '\n') {
+                    break;
+                }
+                /* Send it to the server */
+                if ((result = SSL_write(ssl, txbuf, strlen(txbuf))) <= 0) {
+                    printf("Server closed connection\n");
+                    ERR_print_errors_fp(stderr);
+                    break;
+                }
+
+                /* Wait for the echo */
+                rxlen = SSL_read(ssl, rxbuf, rxcap);
+                if (rxlen <= 0) {
+                    printf("Server closed connection\n");
+                    ERR_print_errors_fp(stderr);
+                    break;
+                } else {
+                    /* Show it */
+                    rxbuf[rxlen] = 0;
+                    printf("Received: %s", rxbuf);
+                }
+            }
+            printf("Client exiting...\n");
+        } else {
+
+            printf("SSL connection to server failed\n\n");
+
+            ERR_print_errors_fp(stderr);
+        }
+    }
+exit:
+    /* Close up */
+    if (ssl != NULL) {
+        SSL_shutdown(ssl);
+        SSL_free(ssl);
+    }
+    SSL_CTX_free(ssl_ctx);
+
+    if (client_skt != -1)
+        close(client_skt);
+    if (server_skt != -1)
+        close(server_skt);
+
+    printf("sslecho exiting\n");
+
+    return EXIT_SUCCESS;
+}