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-rw-r--r--src/gnutls-cli-debug-options.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/src/gnutls-cli-debug-options.c b/src/gnutls-cli-debug-options.c
new file mode 100644
index 0000000..4f3805f
--- /dev/null
+++ b/src/gnutls-cli-debug-options.c
@@ -0,0 +1,287 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gnutls-cli-debug-options.h"
+#include <errno.h>
+#include <error.h>
+#include <getopt.h>
+#include <limits.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#ifndef _WIN32
+#include <unistd.h>
+#endif /* !_WIN32 */
+#include <limits.h>
+
+struct gnutls_cli_debug_options gnutls_cli_debug_options;
+
+static long
+parse_number (const char *arg)
+{
+ char *endptr = NULL;
+ errno = 0;
+ long result;
+
+ if (strncmp (arg, "0x", 2) == 0)
+ result = strtol (arg + 2, &endptr, 16);
+ else if (strncmp (arg, "0", 1) == 0
+ && strspn (arg, "012345678") == strlen (optarg))
+ result = strtol (arg + 1, &endptr, 8);
+ else
+ result = strtol (arg, &endptr, 10);
+
+ if (errno != 0 || (endptr && *endptr != '\0'))
+ error (EXIT_FAILURE, errno, "'%s' is not a recognizable number.",
+ arg);
+
+ return result;
+}
+
+/* Long options. */
+static const struct option long_options[] =
+{
+ { "debug", required_argument, 0, 'd' },
+ { "verbose", no_argument, 0, 'V' },
+ { "port", required_argument, 0, 'p' },
+ { "starttls-proto", required_argument, 0, CHAR_MAX + 2 },
+ { "app-proto", required_argument, 0, CHAR_MAX + 1 },
+ { "version", optional_argument, 0, 'v' },
+ { "help", no_argument, 0, 'h' },
+ { "more-help", no_argument, 0, '!' },
+ { 0, 0, 0, 0 }
+
+};
+
+int
+process_options (int argc, char **argv)
+{
+ struct gnutls_cli_debug_options *opts = &gnutls_cli_debug_options;
+ int opt;
+
+
+ while ((opt = getopt_long (argc, argv, "!Vd:hp:v:",
+ long_options, NULL)) != EOF)
+ switch (opt)
+ {
+ case '\0': /* Long option. */
+ break;
+ case 'd':
+ opts->present.debug = true;
+ opts->arg.debug = optarg;
+ opts->value.debug = parse_number(optarg);
+ opts->enabled.debug = true;
+ break;
+ case 'V':
+ opts->present.verbose = true;
+ opts->enabled.verbose = true;
+ break;
+ case 'p':
+ opts->present.port = true;
+ opts->arg.port = optarg;
+ opts->value.port = parse_number(optarg);
+ opts->enabled.port = true;
+ break;
+ case CHAR_MAX + 2: /* --starttls-proto */
+ case CHAR_MAX + 1: /* --app-proto */
+ opts->present.starttls_proto = true;
+ opts->arg.starttls_proto = optarg;
+ opts->enabled.starttls_proto = true;
+ break;
+ case 'v':
+ opts->present.version = true;
+ opts->arg.version = optarg;
+ opts->enabled.version = true;
+ break;
+ case 'h':
+ opts->present.help = true;
+ opts->enabled.help = true;
+ break;
+ case '!':
+ opts->present.more_help = true;
+ opts->enabled.more_help = true;
+ break;
+ default:
+ usage (stderr, EXIT_FAILURE);
+ break;
+ }
+
+ if (HAVE_OPT(DEBUG) && OPT_VALUE_DEBUG < 0)
+ {
+ error (EXIT_FAILURE, 0, "%s option value %d is out of range.",
+ "debug", opts->value.debug);
+ }
+ if (HAVE_OPT(DEBUG) && OPT_VALUE_DEBUG > 9999)
+ {
+ error (EXIT_FAILURE, 0, "%s option value %d is out of range",
+ "debug", opts->value.debug);
+ }
+ if (HAVE_OPT(PORT) && OPT_VALUE_PORT < 0)
+ {
+ error (EXIT_FAILURE, 0, "%s option value %d is out of range.",
+ "port", opts->value.port);
+ }
+ if (HAVE_OPT(PORT) && OPT_VALUE_PORT > 65536)
+ {
+ error (EXIT_FAILURE, 0, "%s option value %d is out of range",
+ "port", opts->value.port);
+ }
+
+
+ if (HAVE_OPT(HELP))
+ {
+ USAGE(0);
+ }
+
+ if (HAVE_OPT(MORE_HELP))
+#ifdef _WIN32
+ {
+ USAGE(0);
+ }
+#else /* _WIN32 */
+ {
+ pid_t pid;
+ int pfds[2];
+
+ if (pipe (pfds) < 0)
+ error (EXIT_FAILURE, errno, "pipe");
+
+ pid = fork ();
+ if (pid < 0)
+ error (EXIT_FAILURE, errno, "fork");
+
+ if (pid == 0)
+ {
+ close (pfds[0]);
+ dup2 (pfds[1], STDOUT_FILENO);
+ close (pfds[1]);
+
+ usage (stdout, 0);
+ }
+ else
+ {
+ const char *args[2];
+ const char *envvar;
+
+ close (pfds[1]);
+ dup2 (pfds[0], STDIN_FILENO);
+ close (pfds[0]);
+
+ envvar = secure_getenv ("PAGER");
+ if (!envvar || *envvar == '\0')
+ args[0] = "more";
+ else
+ args[0] = envvar;
+
+ args[1] = NULL;
+
+ execvp (args[0], (char * const *)args);
+
+ exit (EXIT_FAILURE);
+ }
+ }
+#endif /* !_WIN32 */
+
+ if (HAVE_OPT(VERSION))
+ {
+ if (!OPT_ARG_VERSION || !strcmp (OPT_ARG_VERSION, "c"))
+ {
+ const char str[] =
+ "gnutls-cli-debug 3.7.9\n"
+ "Copyright (C) 2000-2021 Free Software Foundation, and others\n"
+ "This is free software. It is licensed for use, modification and\n"
+ "redistribution under the terms of the GNU General Public License,\n"
+ "version 3 or later <http://gnu.org/licenses/gpl.html>\n"
+ "\n"
+ "Please send bug reports to: <bugs@gnutls.org> \n";
+ fprintf (stdout, "%s", str);
+ exit(0);
+ }
+ else if (!strcmp (OPT_ARG_VERSION, "v"))
+ {
+ const char str[] =
+ "gnutls-cli-debug 3.7.9\n";
+ fprintf (stdout, "%s", str);
+ exit(0);
+ }
+ else if (!strcmp (OPT_ARG_VERSION, "n"))
+ {
+ const char str[] =
+ "gnutls-cli-debug 3.7.9\n"
+ "Copyright (C) 2000-2021 Free Software Foundation, and others\n"
+ "This is free software. It is licensed for use, modification and\n"
+ "redistribution under the terms of the GNU General Public License,\n"
+ "version 3 or later <http://gnu.org/licenses/gpl.html>\n"
+ "\n"
+ "gnutls is free software: you can redistribute it and/or\n"
+ "modify it under the terms of the GNU General Public License\n"
+ "as published by the Free Software Foundation,\n"
+ "either version 3 of the License, or (at your option) any later version.\n"
+ "\n"
+ "gnutls is distributed in the hope that it will be useful,\n"
+ "but WITHOUT ANY WARRANTY; without even the implied warranty\n"
+ "of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
+ "See the GNU General Public License for more details.\n"
+ "\n"
+ "You should have received a copy of the GNU General Public License\n"
+ "along with this program. If not, see <http://www.gnu.org/licenses/>.\n"
+ "\n"
+ "Please send bug reports to: <bugs@gnutls.org> \n";
+ fprintf (stdout, "%s", str);
+ exit(0);
+ }
+ else
+ {
+ error (EXIT_FAILURE, 0,
+ "version option argument 'a' invalid. Use:\n"
+ " 'v' - version only\n"
+ " 'c' - version and copyright\n"
+ " 'n' - version and full copyright notice");
+ }
+ }
+
+ return optind;
+}
+
+void
+usage (FILE *out, int status)
+{
+ const char str[] =
+ "gnutls-cli-debug - GnuTLS debug client\n"
+ "Usage: gnutls-cli-debug [ -<flag> [<val>] | --<name>[{=| }<val>] ]... [hostname]\n"
+ "\n"
+ "None:\n"
+ "\n"
+ " -d, --debug=num Enable debugging\n"
+ " - it must be in the range:\n"
+ " 0 to 9999\n"
+ " -V, --verbose More verbose output\n"
+ " -p, --port=num The port to connect to\n"
+ " - it must be in the range:\n"
+ " 0 to 65536\n"
+ " --app-proto an alias for the 'starttls-proto' option\n"
+ " --starttls-proto=str The application protocol to be used to obtain the server's certificate (https, ftp, smtp, imap, ldap, xmpp, lmtp, pop3, nntp, sieve, postgres)\n"
+ "\n"
+ "Version, usage and configuration options:\n"
+ "\n"
+ " -v, --version[=arg] output version information and exit\n"
+ " -h, --help display extended usage information and exit\n"
+ " -!, --more-help extended usage information passed thru pager\n"
+ "\n"
+ "Options are specified by doubled hyphens and their name or by a single\n"
+ "hyphen and the flag character.\n"
+ "Operands and options may be intermixed. They will be reordered.\n"
+ "\n"
+ "TLS debug client. It sets up multiple TLS connections to \n"
+ "a server and queries its capabilities. It was created to assist in debugging \n"
+ "GnuTLS, but it might be useful to extract a TLS server's capabilities.\n"
+ "It connects to a TLS server, performs tests and print the server's \n"
+ "capabilities. If called with the `-V' parameter more checks will be performed.\n"
+ "Can be used to check for servers with special needs or bugs.\n"
+ "\n"
+ "Please send bug reports to: <bugs@gnutls.org>\n"
+ "\n";
+ fprintf (out, "%s", str);
+ exit (status);
+}
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