summaryrefslogtreecommitdiffstats
path: root/src/srptool-options.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/srptool-options.c')
-rw-r--r--src/srptool-options.c310
1 files changed, 310 insertions, 0 deletions
diff --git a/src/srptool-options.c b/src/srptool-options.c
new file mode 100644
index 0000000..515624c
--- /dev/null
+++ b/src/srptool-options.c
@@ -0,0 +1,310 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "srptool-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 srptool_options srptool_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' },
+ { "index", required_argument, 0, 'i' },
+ { "username", required_argument, 0, 'u' },
+ { "passwd", required_argument, 0, 'p' },
+ { "salt", required_argument, 0, 's' },
+ { "verify", no_argument, 0, CHAR_MAX + 1 },
+ { "passwd-conf", required_argument, 0, 'v' },
+ { "create-conf", required_argument, 0, CHAR_MAX + 2 },
+ { "version", optional_argument, 0, CHAR_MAX + 3 },
+ { "help", no_argument, 0, 'h' },
+ { "more-help", no_argument, 0, '!' },
+ { 0, 0, 0, 0 }
+
+};
+
+/* Default options. */
+static const char *index_default = "3";
+
+int
+process_options (int argc, char **argv)
+{
+ struct srptool_options *opts = &srptool_options;
+ int opt;
+
+ opts->arg.index = index_default;
+ opts->value.index = 3;
+
+ while ((opt = getopt_long (argc, argv, "!d:hi:p:s:u: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 'i':
+ opts->present.index = true;
+ opts->arg.index = optarg;
+ opts->value.index = parse_number(optarg);
+ opts->enabled.index = true;
+ break;
+ case 'u':
+ opts->present.username = true;
+ opts->arg.username = optarg;
+ opts->enabled.username = true;
+ break;
+ case 'p':
+ opts->present.passwd = true;
+ opts->arg.passwd = optarg;
+ opts->enabled.passwd = true;
+ break;
+ case 's':
+ opts->present.salt = true;
+ opts->arg.salt = optarg;
+ opts->value.salt = parse_number(optarg);
+ opts->enabled.salt = true;
+ break;
+ case CHAR_MAX + 1: /* --verify */
+ opts->present.verify = true;
+ opts->enabled.verify = true;
+ break;
+ case 'v':
+ opts->present.passwd_conf = true;
+ opts->arg.passwd_conf = optarg;
+ opts->enabled.passwd_conf = true;
+ break;
+ case CHAR_MAX + 2: /* --create-conf */
+ opts->present.create_conf = true;
+ opts->arg.create_conf = optarg;
+ opts->enabled.create_conf = true;
+ break;
+ case CHAR_MAX + 3: /* --version */
+ 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 (optind < argc)
+ {
+ error (EXIT_FAILURE, 0, "Command line arguments are not allowed.");
+ }
+
+
+ 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[] =
+ "srptool 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[] =
+ "srptool 3.7.9\n";
+ fprintf (stdout, "%s", str);
+ exit(0);
+ }
+ else if (!strcmp (OPT_ARG_VERSION, "n"))
+ {
+ const char str[] =
+ "srptool 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[] =
+ "srptool - GnuTLS SRP tool\n"
+ "Usage: srptool [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \n"
+ "\n"
+ "None:\n"
+ "\n"
+ " -d, --debug=num Enable debugging\n"
+ " - it must be in the range:\n"
+ " 0 to 9999\n"
+ " -i, --index=num specify the index of the group parameters in tpasswd.conf to use\n"
+ " -u, --username=str specify a username\n"
+ " -p, --passwd=str specify a password file\n"
+ " -s, --salt=num specify salt size\n"
+ " --verify just verify the password\n"
+ " -v, --passwd-conf=str specify a password conf file\n"
+ " --create-conf=str Generate a password configuration file\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"
+ "\n"
+ "Simple program that emulates the programs in the Stanford SRP (Secure\n"
+ "Remote Password) libraries using GnuTLS. It is intended for use in places\n"
+ "where you don't expect SRP authentication to be the used for system users.\n"
+ "\n"
+ "In brief, to use SRP you need to create two files. These are the password\n"
+ "file that holds the users and the verifiers associated with them and the\n"
+ "configuration file to hold the group parameters (called tpasswd.conf).\n"
+ "\n"
+ "Please send bug reports to: <bugs@gnutls.org>\n"
+ "\n";
+ fprintf (out, "%s", str);
+ exit (status);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 09:49:29 +0000