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/* This file is part of libmicrohttpd Copyright (C) 2007, 2008 Christian Grothoff (and other contributing authors) Copyright (C) 2016-2022 Evgeny Grin (Karlson2k) This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file https_fileserver_example.c * @brief a simple HTTPS file server using TLS. * * Usage : * * 'http_fileserver_example HTTP-PORT SECONDS-TO-RUN' * * The certificate & key are required by the server to operate, omitting the * path arguments will cause the server to use the hard coded example certificate & key. * * 'certtool' may be used to generate these if required. * * @author Sagie Amir * @author Karlson2k (Evgeny Grin) */ #include "platform.h" #include #include #define BUF_SIZE 1024 #define MAX_URL_LEN 255 #define EMPTY_PAGE \ "File not foundFile not found" /* test server key */ const char key_pem[] = "-----BEGIN PRIVATE KEY-----\n\ MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCff7amw9zNSE+h\n\ rOMhBrzbbsJluUP3gmd8nOKY5MUimoPkxmAXfp2L0il+MPZT/ZEmo11q0k6J2jfG\n\ UBQ+oZW9ahNZ9gCDjbYlBblo/mqTai+LdeLO3qk53d0zrZKXvCO6sA3uKpG2WR+g\n\ +sNKxfYpIHCpanqBU6O+degIV/+WKy3nQ2Fwp7K5HUNj1u0pg0QQ18yf68LTnKFU\n\ HFjZmmaaopWki5wKSBieHivzQy6w+04HSTogHHRK/y/UcoJNSG7xnHmoPPo1vLT8\n\ CMRIYnSSgU3wJ43XBJ80WxrC2dcoZjV2XZz+XdQwCD4ZrC1ihykcAmiQA+sauNm7\n\ dztOMkGzAgMBAAECggEAIbKDzlvXDG/YkxnJqrKXt+yAmak4mNQuNP+YSCEdHSBz\n\ +SOILa6MbnvqVETX5grOXdFp7SWdfjZiTj2g6VKOJkSA7iKxHRoVf2DkOTB3J8np\n\ XZd8YaRdMGKVV1O2guQ20Dxd1RGdU18k9YfFNsj4Jtw5sTFTzHr1P0n9ybV9xCXp\n\ znSxVfRg8U6TcMHoRDJR9EMKQMO4W3OQEmreEPoGt2/+kMuiHjclxLtbwDxKXTLP\n\ pD0gdg3ibvlufk/ccKl/yAglDmd0dfW22oS7NgvRKUve7tzDxY1Q6O5v8BCnLFSW\n\ D+z4hS1PzooYRXRkM0xYudvPkryPyu+1kEpw3fNsoQKBgQDRfXJo82XQvlX8WPdZ\n\ Ts3PfBKKMVu3Wf8J3SYpuvYT816qR3ot6e4Ivv5ZCQkdDwzzBKe2jAv6JddMJIhx\n\ pkGHc0KKOodd9HoBewOd8Td++hapJAGaGblhL5beIidLKjXDjLqtgoHRGlv5Cojo\n\ zHa7Viel1eOPPcBumhp83oJ+mQKBgQDC6PmdETZdrW3QPm7ZXxRzF1vvpC55wmPg\n\ pRfTRM059jzRzAk0QiBgVp3yk2a6Ob3mB2MLfQVDgzGf37h2oO07s5nspSFZTFnM\n\ KgSjFy0xVOAVDLe+0VpbmLp1YUTYvdCNowaoTE7++5rpePUDu3BjAifx07/yaSB+\n\ W+YPOfOuKwKBgQCGK6g5G5qcJSuBIaHZ6yTZvIdLRu2M8vDral5k3793a6m3uWvB\n\ OFAh/eF9ONJDcD5E7zhTLEMHhXDs7YEN+QODMwjs6yuDu27gv97DK5j1lEsrLUpx\n\ XgRjAE3KG2m7NF+WzO1K74khWZaKXHrvTvTEaxudlO3X8h7rN3u7ee9uEQKBgQC2\n\ wI1zeTUZhsiFTlTPWfgppchdHPs6zUqq0wFQ5Zzr8Pa72+zxY+NJkU2NqinTCNsG\n\ ePykQ/gQgk2gUrt595AYv2De40IuoYk9BlTMuql0LNniwsbykwd/BOgnsSlFdEy8\n\ 0RQn70zOhgmNSg2qDzDklJvxghLi7zE5aV9//V1/ewKBgFRHHZN1a8q/v8AAOeoB\n\ ROuXfgDDpxNNUKbzLL5MO5odgZGi61PBZlxffrSOqyZoJkzawXycNtoBP47tcVzT\n\ QPq5ZOB3kjHTcN7dRLmPWjji9h4O3eHCX67XaPVMSWiMuNtOZIg2an06+jxGFhLE\n\ qdJNJ1DkyUc9dN2cliX4R+rG\n\ -----END PRIVATE KEY-----"; /* test server CA signed certificates */ const char cert_pem[] = "-----BEGIN CERTIFICATE-----\n\ MIIFSzCCAzOgAwIBAgIBBDANBgkqhkiG9w0BAQsFADCBgTELMAkGA1UEBhMCUlUx\n\ DzANBgNVBAgMBk1vc2NvdzEPMA0GA1UEBwwGTW9zY293MRswGQYDVQQKDBJ0ZXN0\n\ LWxpYm1pY3JvaHR0cGQxITAfBgkqhkiG9w0BCQEWEm5vYm9keUBleGFtcGxlLm9y\n\ ZzEQMA4GA1UEAwwHdGVzdC1DQTAgFw0yMjA0MjAxODQzMDJaGA8yMTIyMDMyNjE4\n\ NDMwMlowZTELMAkGA1UEBhMCUlUxDzANBgNVBAgMBk1vc2NvdzEPMA0GA1UEBwwG\n\ TW9zY293MRswGQYDVQQKDBJ0ZXN0LWxpYm1pY3JvaHR0cGQxFzAVBgNVBAMMDnRl\n\ c3QtbWhkc2VydmVyMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAn3+2\n\ psPczUhPoazjIQa8227CZblD94JnfJzimOTFIpqD5MZgF36di9IpfjD2U/2RJqNd\n\ atJOido3xlAUPqGVvWoTWfYAg422JQW5aP5qk2ovi3Xizt6pOd3dM62Sl7wjurAN\n\ 7iqRtlkfoPrDSsX2KSBwqWp6gVOjvnXoCFf/list50NhcKeyuR1DY9btKYNEENfM\n\ n+vC05yhVBxY2ZpmmqKVpIucCkgYnh4r80MusPtOB0k6IBx0Sv8v1HKCTUhu8Zx5\n\ qDz6Nby0/AjESGJ0koFN8CeN1wSfNFsawtnXKGY1dl2c/l3UMAg+GawtYocpHAJo\n\ kAPrGrjZu3c7TjJBswIDAQABo4HmMIHjMAsGA1UdDwQEAwIFoDAMBgNVHRMBAf8E\n\ AjAAMBYGA1UdJQEB/wQMMAoGCCsGAQUFBwMBMDEGA1UdEQQqMCiCDnRlc3QtbWhk\n\ c2VydmVyhwR/AAABhxAAAAAAAAAAAAAAAAAAAAABMB0GA1UdDgQWBBQ57Z06WJae\n\ 8fJIHId4QGx/HsRgDDAoBglghkgBhvhCAQ0EGxYZVGVzdCBsaWJtaWNyb2h0dHBk\n\ IHNlcnZlcjARBglghkgBhvhCAQEEBAMCBkAwHwYDVR0jBBgwFoAUWHVDwKVqMcOF\n\ Nd0arI3/QB3W6SwwDQYJKoZIhvcNAQELBQADggIBAI7Lggm/XzpugV93H5+KV48x\n\ X+Ct8unNmPCSzCaI5hAHGeBBJpvD0KME5oiJ5p2wfCtK5Dt9zzf0S0xYdRKqU8+N\n\ aKIvPoU1hFixXLwTte1qOp6TviGvA9Xn2Fc4n36dLt6e9aiqDnqPbJgBwcVO82ll\n\ HJxVr3WbrAcQTB3irFUMqgAke/Cva9Bw79VZgX4ghb5EnejDzuyup4pHGzV10Myv\n\ hdg+VWZbAxpCe0S4eKmstZC7mWsFCLeoRTf/9Pk1kQ6+azbTuV/9QOBNfFi8QNyb\n\ 18jUjmm8sc2HKo8miCGqb2sFqaGD918hfkWmR+fFkzQ3DZQrT+eYbKq2un3k0pMy\n\ UySy8SRn1eadfab+GwBVb68I9TrPRMrJsIzysNXMX4iKYl2fFE/RSNnaHtPw0C8y\n\ B7memyxPRl+H2xg6UjpoKYh3+8e44/XKm0rNIzXjrwA8f8gnw2TbqmMDkj1YqGnC\n\ SCj5A27zUzaf2pT/YsnQXIWOJjVvbEI+YKj34wKWyTrXA093y8YI8T3mal7Kr9YM\n\ WiIyPts0/aVeziM0Gunglz+8Rj1VesL52FTurobqusPgM/AME82+qb/qnxuPaCKj\n\ OT1qAbIblaRuWqCsid8BzP7ZQiAnAWgMRSUg1gzDwSwRhrYQRRWAyn/Qipzec+27\n\ /w0gW9EVWzFhsFeGEssi\n\ -----END CERTIFICATE-----"; static ssize_t file_reader (void *cls, uint64_t pos, char *buf, size_t max) { FILE *file = cls; (void) fseek (file, pos, SEEK_SET); return fread (buf, 1, max, file); } static void file_free_callback (void *cls) { FILE *file = cls; fclose (file); } /* HTTP access handler call back */ static enum MHD_Result http_ahc (void *cls, struct MHD_Connection *connection, const char *url, const char *method, const char *version, const char *upload_data, size_t *upload_data_size, void **req_cls) { static int aptr; struct MHD_Response *response; enum MHD_Result ret; FILE *file; int fd; struct stat buf; (void) cls; /* Unused. Silent compiler warning. */ (void) version; /* Unused. Silent compiler warning. */ (void) upload_data; /* Unused. Silent compiler warning. */ (void) upload_data_size; /* Unused. Silent compiler warning. */ if (0 != strcmp (method, MHD_HTTP_METHOD_GET)) return MHD_NO; /* unexpected method */ if (&aptr != *req_cls) { /* do never respond on first call */ *req_cls = &aptr; return MHD_YES; } *req_cls = NULL; /* reset when done */ file = fopen (&url[1], "rb"); if (NULL != file) { fd = fileno (file); if (-1 == fd) { (void) fclose (file); return MHD_NO; /* internal error */ } if ( (0 != fstat (fd, &buf)) || (! S_ISREG (buf.st_mode)) ) { /* not a regular file, refuse to serve */ fclose (file); file = NULL; } } if (NULL == file) { response = MHD_create_response_from_buffer_static (strlen (EMPTY_PAGE), (const void *) EMPTY_PAGE); ret = MHD_queue_response (connection, MHD_HTTP_NOT_FOUND, response); MHD_destroy_response (response); } else { response = MHD_create_response_from_callback (buf.st_size, 32 * 1024, /* 32k PAGE_NOT_FOUND size */ &file_reader, file, &file_free_callback); if (NULL == response) { fclose (file); return MHD_NO; } ret = MHD_queue_response (connection, MHD_HTTP_OK, response); MHD_destroy_response (response); } return ret; } int main (int argc, char *const *argv) { struct MHD_Daemon *TLS_daemon; int port; if (argc != 2) { printf ("%s PORT\n", argv[0]); return 1; } port = atoi (argv[1]); if ( (1 > port) || (port > UINT16_MAX) ) { fprintf (stderr, "Port must be a number between 1 and 65535\n"); return 1; } TLS_daemon = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG | MHD_USE_TLS, (uint16_t) port, NULL, NULL, &http_ahc, NULL, MHD_OPTION_CONNECTION_TIMEOUT, 256, MHD_OPTION_HTTPS_MEM_KEY, key_pem, MHD_OPTION_HTTPS_MEM_CERT, cert_pem, MHD_OPTION_END); if (NULL == TLS_daemon) { fprintf (stderr, "Error: failed to start TLS_daemon.\n"); return 1; } printf ("MHD daemon listening on port %u\n", (unsigned int) port); (void) getc (stdin); MHD_stop_daemon (TLS_daemon); return 0; }