Adding upstream version 252.22.upstream/252.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 266 insertions, 0 deletions

diff --git a/src/ask-password/ask-password.c b/src/ask-password/ask-password.c
new file mode 100644
index 0000000..d3b61e1
--- /dev/null
+++ b/src/ask-password/ask-password.c
@@ -0,0 +1,266 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+#include <getopt.h>
+#include <stddef.h>
+#include <unistd.h>
+
+#include "ask-password-api.h"
+#include "def.h"
+#include "log.h"
+#include "macro.h"
+#include "main-func.h"
+#include "parse-argument.h"
+#include "pretty-print.h"
+#include "strv.h"
+#include "terminal-util.h"
+
+static const char *arg_icon = NULL;
+static const char *arg_id = NULL;               /* identifier for 'ask-password' protocol */
+static const char *arg_key_name = NULL;         /* name in kernel keyring */
+static const char *arg_credential_name = NULL;  /* name in $CREDENTIALS_DIRECTORY directory */
+static char *arg_message = NULL;
+static usec_t arg_timeout = DEFAULT_TIMEOUT_USEC;
+static bool arg_multiple = false;
+static bool arg_no_output = false;
+static AskPasswordFlags arg_flags = ASK_PASSWORD_PUSH_CACHE;
+static bool arg_newline = true;
+
+STATIC_DESTRUCTOR_REGISTER(arg_message, freep);
+
+static int help(void) {
+        _cleanup_free_ char *link = NULL;
+        int r;
+
+        r = terminal_urlify_man("systemd-ask-password", "1", &link);
+        if (r < 0)
+                return log_oom();
+
+        printf("%1$s [OPTIONS...] MESSAGE\n\n"
+               "%3$sQuery the user for a system passphrase, via the TTY or an UI agent.%4$s\n\n"
+               "  -h --help           Show this help\n"
+               "     --icon=NAME      Icon name\n"
+               "     --id=ID          Query identifier (e.g. \"cryptsetup:/dev/sda5\")\n"
+               "     --keyname=NAME   Kernel key name for caching passwords (e.g. \"cryptsetup\")\n"
+               "     --credential=NAME\n"
+               "                      Credential name for LoadCredential=/SetCredential=\n"
+               "                      credentials\n"
+               "     --timeout=SEC    Timeout in seconds\n"
+               "     --echo=yes|no|masked\n"
+               "                      Control whether to show password while typing (echo)\n"
+               "  -e --echo           Equivalent to --echo=yes\n"
+               "     --emoji=yes|no|auto\n"
+               "                      Show a lock and key emoji\n"
+               "     --no-tty         Ask question via agent even on TTY\n"
+               "     --accept-cached  Accept cached passwords\n"
+               "     --multiple       List multiple passwords if available\n"
+               "     --no-output      Do not print password to standard output\n"
+               "  -n                  Do not suffix password written to standard output with\n"
+               "                      newline\n"
+               "\nSee the %2$s for details.\n",
+               program_invocation_short_name,
+               link,
+               ansi_highlight(),
+               ansi_normal());
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_ICON = 0x100,
+                ARG_TIMEOUT,
+                ARG_EMOJI,
+                ARG_NO_TTY,
+                ARG_ACCEPT_CACHED,
+                ARG_MULTIPLE,
+                ARG_ID,
+                ARG_KEYNAME,
+                ARG_NO_OUTPUT,
+                ARG_VERSION,
+                ARG_CREDENTIAL,
+        };
+
+        static const struct option options[] = {
+                { "help",          no_argument,       NULL, 'h'               },
+                { "version",       no_argument,       NULL, ARG_VERSION       },
+                { "icon",          required_argument, NULL, ARG_ICON          },
+                { "timeout",       required_argument, NULL, ARG_TIMEOUT       },
+                { "echo",          optional_argument, NULL, 'e'               },
+                { "emoji",         required_argument, NULL, ARG_EMOJI         },
+                { "no-tty",        no_argument,       NULL, ARG_NO_TTY        },
+                { "accept-cached", no_argument,       NULL, ARG_ACCEPT_CACHED },
+                { "multiple",      no_argument,       NULL, ARG_MULTIPLE      },
+                { "id",            required_argument, NULL, ARG_ID            },
+                { "keyname",       required_argument, NULL, ARG_KEYNAME       },
+                { "no-output",     no_argument,       NULL, ARG_NO_OUTPUT     },
+                { "credential",    required_argument, NULL, ARG_CREDENTIAL    },
+                {}
+        };
+
+        const char *emoji = NULL;
+        int c, r;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        /* Note the asymmetry: the long option --echo= allows an optional argument, the short option does
+         * not. */
+
+        /* Resetting to 0 forces the invocation of an internal initialization routine of getopt_long()
+         * that checks for GNU extensions in optstring ('-' or '+' at the beginning). */
+        optind = 0;
+        while ((c = getopt_long(argc, argv, "+hen", options, NULL)) >= 0)
+
+                switch (c) {
+
+                case 'h':
+                        return help();
+
+                case ARG_VERSION:
+                        return version();
+
+                case ARG_ICON:
+                        arg_icon = optarg;
+                        break;
+
+                case ARG_TIMEOUT:
+                        r = parse_sec(optarg, &arg_timeout);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to parse --timeout= parameter: %s", optarg);
+
+                        break;
+
+                case 'e':
+                        if (!optarg) {
+                                /* Short option -e is used, or no argument to long option --echo= */
+                                arg_flags |= ASK_PASSWORD_ECHO;
+                                arg_flags &= ~ASK_PASSWORD_SILENT;
+                        } else if (isempty(optarg) || streq(optarg, "masked"))
+                                /* Empty argument or explicit string "masked" for default behaviour. */
+                                arg_flags &= ~(ASK_PASSWORD_ECHO|ASK_PASSWORD_SILENT);
+                        else {
+                                bool b;
+
+                                r = parse_boolean_argument("--echo=", optarg, &b);
+                                if (r < 0)
+                                        return r;
+
+                                SET_FLAG(arg_flags, ASK_PASSWORD_ECHO, b);
+                                SET_FLAG(arg_flags, ASK_PASSWORD_SILENT, !b);
+                        }
+                        break;
+
+                case ARG_EMOJI:
+                        emoji = optarg;
+                        break;
+
+                case ARG_NO_TTY:
+                        arg_flags |= ASK_PASSWORD_NO_TTY;
+                        break;
+
+                case ARG_ACCEPT_CACHED:
+                        arg_flags |= ASK_PASSWORD_ACCEPT_CACHED;
+                        break;
+
+                case ARG_MULTIPLE:
+                        arg_multiple = true;
+                        break;
+
+                case ARG_ID:
+                        arg_id = optarg;
+                        break;
+
+                case ARG_KEYNAME:
+                        arg_key_name = optarg;
+                        break;
+
+                case ARG_NO_OUTPUT:
+                        arg_no_output = true;
+                        break;
+
+                case ARG_CREDENTIAL:
+                        arg_credential_name = optarg;
+                        break;
+
+                case 'n':
+                        arg_newline = false;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached();
+                }
+
+        if (isempty(emoji) || streq(emoji, "auto"))
+                SET_FLAG(arg_flags, ASK_PASSWORD_HIDE_EMOJI, FLAGS_SET(arg_flags, ASK_PASSWORD_ECHO));
+        else {
+                bool b;
+
+                r = parse_boolean_argument("--emoji=", emoji, &b);
+                if (r < 0)
+                         return r;
+
+                SET_FLAG(arg_flags, ASK_PASSWORD_HIDE_EMOJI, !b);
+        }
+
+        if (argc > optind) {
+                arg_message = strv_join(argv + optind, " ");
+                if (!arg_message)
+                        return log_oom();
+        } else if (FLAGS_SET(arg_flags, ASK_PASSWORD_ECHO)) {
+                /* By default ask_password_auto() will query with the string "Password: ", which is not right
+                 * when full echo is on, since then it's unlikely a password. Let's hence default to a less
+                 * confusing string in that case. */
+
+                arg_message = strdup("Input:");
+                if (!arg_message)
+                        return log_oom();
+        }
+
+        return 1;
+}
+
+static int run(int argc, char *argv[]) {
+        _cleanup_strv_free_erase_ char **l = NULL;
+        usec_t timeout;
+        int r;
+
+        log_show_color(true);
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        if (arg_timeout > 0)
+                timeout = usec_add(now(CLOCK_MONOTONIC), arg_timeout);
+        else
+                timeout = 0;
+
+        r = ask_password_auto(arg_message, arg_icon, arg_id, arg_key_name, arg_credential_name ?: "password", timeout, arg_flags, &l);
+        if (r < 0)
+                return log_error_errno(r, "Failed to query password: %m");
+
+        STRV_FOREACH(p, l) {
+                if (!arg_no_output) {
+                        if (arg_newline)
+                                puts(*p);
+                        else
+                                fputs(*p, stdout);
+                }
+
+                fflush(stdout);
+
+                if (!arg_multiple)
+                        break;
+        }
+
+        return 0;
+}
+
+DEFINE_MAIN_FUNCTION(run);