mirror of
https://gitlab.com/cryptsetup/cryptsetup.git
synced 2025-12-15 04:40:05 +01:00
Initial checking of what was revision 56 on http://luks.endorphin.org/svn/cryptsetup
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@3 36d66b0a-2a48-0410-832c-cd162a569da5
This commit is contained in:
Clemens Fruhwirth
547
src/cryptsetup.c
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547
src/cryptsetup.c
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@@ -0,0 +1,547 @@
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <unistd.h>
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#include <assert.h>
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#include <libcryptsetup.h>
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#include <popt.h>
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#include "../config.h"
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#include "cryptsetup.h"
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static int opt_verbose = 1;
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static char *opt_cipher = NULL;
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static char *opt_hash = DEFAULT_HASH;
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static int opt_verify_passphrase = 0;
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static char *opt_key_file = NULL;
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static unsigned int opt_key_size = 0;
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static int opt_key_slot = -1;
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static uint64_t opt_size = 0;
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static uint64_t opt_offset = 0;
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static uint64_t opt_skip = 0;
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static int opt_readonly = 0;
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static int opt_iteration_time = 1000;
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static int opt_batch_mode = 0;
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static int opt_version_mode = 0;
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static int opt_timeout = 0;
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static int opt_tries = 3;
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static int opt_align_payload = 0;
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static const char **action_argv;
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static int action_argc;
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static int action_create(int arg);
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static int action_remove(int arg);
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static int action_resize(int arg);
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static int action_status(int arg);
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static int action_luksFormat(int arg);
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static int action_luksOpen(int arg);
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static int action_luksAddKey(int arg);
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static int action_luksDelKey(int arg);
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static int action_luksKillSlot(int arg);
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static int action_luksRemoveKey(int arg);
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static int action_isLuks(int arg);
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static int action_luksUUID(int arg);
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static int action_luksDump(int arg);
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static struct action_type {
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const char *type;
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int (*handler)(int);
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int arg;
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int required_action_argc;
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const char *arg_desc;
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const char *desc;
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} action_types[] = {
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{ "create", action_create, 0, 2, N_("<name> <device>"), N_("create device") },
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{ "remove", action_remove, 0, 1, N_("<name>"), N_("remove device") },
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{ "resize", action_resize, 0, 1, N_("<name>"), N_("resize active device") },
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{ "status", action_status, 0, 1, N_("<name>"), N_("show device status") },
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{ "luksFormat", action_luksFormat, 0, 1, N_("<device> [<new key file>]"), N_("formats a LUKS device") },
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{ "luksOpen", action_luksOpen, 0, 2, N_("<device> <name> "), N_("open LUKS device as mapping <name>") },
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{ "luksAddKey", action_luksAddKey, 0, 1, N_("<device> [<new key file>]"), N_("add key to LUKS device") },
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{ "luksRemoveKey", action_luksRemoveKey, 0, 1, N_("<device> [<key file>]"), N_("removes supplied key or key file from LUKS device") },
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{ "luksKillSlot", action_luksKillSlot, 0, 2, N_("<device> <key slot>"), N_("wipes key with number <key slot> from LUKS device") },
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{ "luksUUID", action_luksUUID, 0, 1, N_("<device>"), N_("print UUID of LUKS device") },
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{ "isLuks", action_isLuks, 0, 1, N_("<device>"), N_("tests <device> for LUKS partition header") },
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{ "luksClose", action_remove, 0, 1, N_("<name>"), N_("remove LUKS mapping") },
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{ "luksDump", action_luksDump, 0, 1, N_("<device>"), N_("dump LUKS partition information") },
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{ "luksDelKey", action_luksDelKey, 0, 2, N_("<device> <key slot>"), N_("identical to luksKillSlot - DEPRECATED - see man page") },
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{ "reload", action_create, 1, 2, N_("<name> <device>"), N_("modify active device - DEPRECATED - see man page") },
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{ NULL, NULL, 0, 0, NULL }
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};
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/* Interface Callbacks */
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static int yesDialog(char *msg)
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{
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int r = 0;
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if(isatty(0) && !opt_batch_mode) {
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char *answer=NULL;
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size_t size=0;
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fprintf(stderr,"\nWARNING!\n========\n");
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fprintf(stderr,"%s\n\nAre you sure? (Type uppercase yes): ",msg);
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if(getline(&answer,&size,stdin) == -1)
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return 0;
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if(strcmp(answer,"YES\n") == 0)
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r = 1;
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free(answer);
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} else
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r = 1;
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return r;
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}
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static void cmdLineLog(int class, char *msg) {
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switch(class) {
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case CRYPT_LOG_NORMAL:
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fputs(msg, stdout);
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break;
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case CRYPT_LOG_ERROR:
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fputs(msg, stderr);
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break;
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default:
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fprintf(stderr, "Internal error on logging class for msg: %s", msg);
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break;
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}
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}
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static struct interface_callbacks cmd_icb = {
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.yesDialog = yesDialog,
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.log = cmdLineLog,
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};
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/* End ICBs */
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static void show_status(int errcode)
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{
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char error[256];
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if(!errcode) {
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fprintf(stderr, _("Command successful.\n"));
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return;
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}
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crypt_get_error(error, sizeof(error));
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if (!opt_verbose) {
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char *error_ = strerror_r(errcode, error, sizeof(error));
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if (error_ != error) {
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strncpy(error, error_, sizeof(error));
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error[sizeof error - 1] = '\0';
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}
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}
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fprintf(stderr, _("Command failed"));
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if (*error)
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fprintf(stderr, ": %s\n", error);
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else
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fputs(".\n", stderr);
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return;
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}
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static int action_create(int reload)
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{
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struct crypt_options options = {
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.name = action_argv[0],
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.device = action_argv[1],
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.cipher = opt_cipher?opt_cipher:DEFAULT_CIPHER,
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.hash = opt_hash,
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.key_file = opt_key_file,
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.key_size = ((opt_key_size)?opt_key_size:DEFAULT_KEY_SIZE)/8,
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.key_slot = opt_key_slot,
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.passphrase_fd = 0, /* stdin */
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.flags = 0,
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.size = opt_size,
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.offset = opt_offset,
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.skip = opt_skip,
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.timeout = opt_timeout,
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.tries = opt_tries,
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.icb = &cmd_icb,
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};
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int r;
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if(reload)
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fprintf(stderr, _("The reload action is deprecated. Please use \"dmsetup reload\" in case you really need this functionality.\nWARNING: do not use reload to touch LUKS devices. If that is the case, hit Ctrl-C now.\n"));
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if (options.hash && strcmp(options.hash, "plain") == 0)
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options.hash = NULL;
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if (opt_verify_passphrase)
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options.flags |= CRYPT_FLAG_VERIFY;
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if (opt_readonly)
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options.flags |= CRYPT_FLAG_READONLY;
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if (reload)
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r = crypt_update_device(&options);
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else
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r = crypt_create_device(&options);
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if (r < 0)
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show_status(-r);
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return r;
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}
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static int action_remove(int arg)
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{
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struct crypt_options options = {
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.name = action_argv[0],
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.icb = &cmd_icb,
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};
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int r;
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r = crypt_remove_device(&options);
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if (r < 0)
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show_status(-r);
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return r;
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}
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static int action_resize(int arg)
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{
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struct crypt_options options = {
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.name = action_argv[0],
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.size = opt_size,
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.icb = &cmd_icb,
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};
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int r;
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r = crypt_resize_device(&options);
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if (r < 0)
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show_status(-r);
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return r;
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}
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static int action_status(int arg)
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{
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struct crypt_options options = {
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.name = action_argv[0],
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.icb = &cmd_icb,
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};
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int r;
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r = crypt_query_device(&options);
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if (r < 0) {
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/* error */
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show_status(-r);
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} else if (r == 0) {
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/* inactive */
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printf("%s/%s is inactive.\n", crypt_get_dir(), options.name);
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r = 1;
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} else {
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/* active */
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printf("%s/%s is active:\n", crypt_get_dir(), options.name);
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printf(" cipher: %s\n", options.cipher);
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printf(" keysize: %d bits\n", options.key_size * 8);
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printf(" device: %s\n", options.device);
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printf(" offset: %" PRIu64 " sectors\n", options.offset);
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printf(" size: %" PRIu64 " sectors\n", options.size);
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if (options.skip)
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printf(" skipped: %" PRIu64 " sectors\n", options.skip);
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printf(" mode: %s\n", (options.flags & CRYPT_FLAG_READONLY)
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? "readonly" : "read/write");
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crypt_put_options(&options);
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r = 0;
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}
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return r;
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}
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static int action_luksFormat(int arg)
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{
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struct crypt_options options = {
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.key_size = (opt_key_size != 0 ? opt_key_size : DEFAULT_LUKS_KEY_SIZE) / 8,
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.key_slot = opt_key_slot,
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.device = action_argv[0],
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.cipher = opt_cipher?opt_cipher:DEFAULT_LUKS_CIPHER,
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.new_key_file = action_argc > 1 ? action_argv[1] : NULL,
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.flags = opt_verify_passphrase ? CRYPT_FLAG_VERIFY : (!opt_batch_mode?CRYPT_FLAG_VERIFY_IF_POSSIBLE : 0),
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.iteration_time = opt_iteration_time,
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.timeout = opt_timeout,
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.align_payload = opt_align_payload,
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.icb = &cmd_icb,
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};
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int r = 0; char *msg = NULL;
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if(asprintf(&msg, _("This will overwrite data on %s irrevocably."), options.device) == -1) {
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fputs(_("memory allocation error in action_luksFormat"), stderr);
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} else {
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r = yesDialog(msg) ? crypt_luksFormat(&options) : -EINVAL;
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free(msg);
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show_status(-r);
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}
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return r;
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}
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static int action_luksOpen(int arg)
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{
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struct crypt_options options = {
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.name = action_argv[1],
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.device = action_argv[0],
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.key_file = opt_key_file,
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.timeout = opt_timeout,
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.tries = opt_tries,
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.icb = &cmd_icb,
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};
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int r;
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opt_verbose = 1;
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options.flags = 0;
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if (opt_readonly)
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options.flags |= CRYPT_FLAG_READONLY;
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r = crypt_luksOpen(&options);
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show_status(-r);
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return r;
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}
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static int action_luksDelKey(int arg)
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{
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fprintf(stderr,"luksDelKey is a deprecated action name.\nPlease use luksKillSlot.\n");
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return action_luksKillSlot(arg);
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}
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static int action_luksKillSlot(int arg)
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{
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struct crypt_options options = {
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.device = action_argv[0],
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.key_slot = atoi(action_argv[1]),
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.key_file = opt_key_file,
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.timeout = opt_timeout,
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.flags = !opt_batch_mode?CRYPT_FLAG_VERIFY_ON_DELKEY : 0,
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.icb = &cmd_icb,
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};
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int r;
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opt_verbose = 1;
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r = crypt_luksKillSlot(&options);
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show_status(-r);
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return r;
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}
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static int action_luksRemoveKey(int arg)
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{
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struct crypt_options options = {
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.device = action_argv[0],
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.new_key_file = action_argc>1?action_argv[1]:NULL,
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.key_file = opt_key_file,
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.timeout = opt_timeout,
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.flags = !opt_batch_mode?CRYPT_FLAG_VERIFY_ON_DELKEY : 0,
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.icb = &cmd_icb,
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};
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int r;
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opt_verbose = 1;
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r = crypt_luksRemoveKey(&options);
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show_status(-r);
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return r;
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}
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static int action_luksAddKey(int arg)
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{
|
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struct crypt_options options = {
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.device = action_argv[0],
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.new_key_file = action_argc>1?action_argv[1]:NULL,
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.key_file = opt_key_file,
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.key_slot = opt_key_slot,
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.flags = opt_verify_passphrase ? CRYPT_FLAG_VERIFY : (!opt_batch_mode?CRYPT_FLAG_VERIFY_IF_POSSIBLE : 0),
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.iteration_time = opt_iteration_time,
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.timeout = opt_timeout,
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.icb = &cmd_icb,
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};
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int r;
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opt_verbose = 1;
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r = crypt_luksAddKey(&options);
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show_status(-r);
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return r;
|
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}
|
||||
|
||||
static int action_isLuks(int arg)
|
||||
{
|
||||
struct crypt_options options = {
|
||||
.device = action_argv[0],
|
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.icb = &cmd_icb,
|
||||
};
|
||||
return crypt_isLuks(&options);
|
||||
}
|
||||
|
||||
static int action_luksUUID(int arg)
|
||||
{
|
||||
struct crypt_options options = {
|
||||
.device = action_argv[0],
|
||||
.icb = &cmd_icb,
|
||||
};
|
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int r;
|
||||
|
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r = crypt_luksUUID(&options);
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if (r < 0)
|
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show_status(-r);
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return r;
|
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}
|
||||
|
||||
static int action_luksDump(int arg)
|
||||
{
|
||||
struct crypt_options options = {
|
||||
.device = action_argv[0],
|
||||
.icb = &cmd_icb,
|
||||
};
|
||||
int r;
|
||||
|
||||
r = crypt_luksDump(&options);
|
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if (r < 0)
|
||||
show_status(-r);
|
||||
return r;
|
||||
}
|
||||
|
||||
static void usage(poptContext popt_context, int exitcode,
|
||||
const char *error, const char *more)
|
||||
{
|
||||
poptPrintUsage(popt_context, stderr, 0);
|
||||
if (error)
|
||||
fprintf(stderr, "%s: %s\n", more, error);
|
||||
exit(exitcode);
|
||||
}
|
||||
|
||||
static void help(poptContext popt_context, enum poptCallbackReason reason,
|
||||
struct poptOption *key, const char * arg, void *data)
|
||||
{
|
||||
if (key->shortName == '?') {
|
||||
struct action_type *action;
|
||||
|
||||
fprintf(stdout, "%s\n",PACKAGE_STRING);
|
||||
|
||||
poptPrintHelp(popt_context, stdout, 0);
|
||||
|
||||
printf(_("\n"
|
||||
"<action> is one of:\n"));
|
||||
|
||||
for(action = action_types; action->type; action++)
|
||||
printf("\t%s %s - %s\n", action->type, _(action->arg_desc), _(action->desc));
|
||||
|
||||
printf(_("\n"
|
||||
"<name> is the device to create under %s\n"
|
||||
"<device> is the encrypted device\n"
|
||||
"<key slot> is the LUKS key slot number to modify\n"
|
||||
"<key file> optional key file for the new key for luksAddKey action\n"),
|
||||
crypt_get_dir());
|
||||
exit(0);
|
||||
} else
|
||||
usage(popt_context, 0, NULL, NULL);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
static char *popt_tmp;
|
||||
static struct poptOption popt_help_options[] = {
|
||||
{ NULL, '\0', POPT_ARG_CALLBACK, help, 0, NULL, NULL },
|
||||
{ "help", '?', POPT_ARG_NONE, NULL, 0, N_("Show this help message"), NULL },
|
||||
{ "usage", '\0', POPT_ARG_NONE, NULL, 0, N_("Display brief usage"), NULL },
|
||||
POPT_TABLEEND
|
||||
};
|
||||
static struct poptOption popt_options[] = {
|
||||
{ NULL, '\0', POPT_ARG_INCLUDE_TABLE, popt_help_options, 0, N_("Help options:"), NULL },
|
||||
{ "verbose", 'v', POPT_ARG_NONE, &opt_verbose, 0, N_("Shows more detailed error messages"), NULL },
|
||||
{ "cipher", 'c', POPT_ARG_STRING | POPT_ARGFLAG_SHOW_DEFAULT, &opt_cipher, 0, N_("The cipher used to encrypt the disk (see /proc/crypto)"), NULL },
|
||||
{ "hash", 'h', POPT_ARG_STRING | POPT_ARGFLAG_SHOW_DEFAULT, &opt_hash, 0, N_("The hash used to create the encryption key from the passphrase"), NULL },
|
||||
{ "verify-passphrase", 'y', POPT_ARG_NONE, &opt_verify_passphrase, 0, N_("Verifies the passphrase by asking for it twice"), NULL },
|
||||
{ "key-file", 'd', POPT_ARG_STRING, &opt_key_file, 0, N_("Read the key from a file (can be /dev/random)"), NULL },
|
||||
{ "key-size", 's', POPT_ARG_INT | POPT_ARGFLAG_SHOW_DEFAULT, &opt_key_size, 0, N_("The size of the encryption key"), N_("BITS") },
|
||||
{ "key-slot", 'S', POPT_ARG_INT, &opt_key_slot, 0, N_("Slot number for new key (default is first free)"), NULL },
|
||||
{ "size", 'b', POPT_ARG_STRING, &popt_tmp, 1, N_("The size of the device"), N_("SECTORS") },
|
||||
{ "offset", 'o', POPT_ARG_STRING, &popt_tmp, 2, N_("The start offset in the backend device"), N_("SECTORS") },
|
||||
{ "skip", 'p', POPT_ARG_STRING, &popt_tmp, 3, N_("How many sectors of the encrypted data to skip at the beginning"), N_("SECTORS") },
|
||||
{ "readonly", 'r', POPT_ARG_NONE, &opt_readonly, 0, N_("Create a readonly mapping"), NULL },
|
||||
{ "iter-time", 'i', POPT_ARG_INT, &opt_iteration_time, 0, N_("PBKDF2 iteration time for LUKS (in ms)"),
|
||||
N_("msecs") },
|
||||
{ "batch-mode", 'q', POPT_ARG_NONE, &opt_batch_mode, 0, N_("Do not ask for confirmation"), NULL },
|
||||
{ "version", '\0', POPT_ARG_NONE, &opt_version_mode, 0, N_("Print package version"), NULL },
|
||||
{ "timeout", 't', POPT_ARG_INT, &opt_timeout, 0, N_("Timeout for interactive passphrase prompt (in seconds)"), N_("secs") },
|
||||
{ "tries", 'T', POPT_ARG_INT, &opt_tries, 0, N_("How often the input of the passphrase can be retried"), NULL },
|
||||
{ "align-payload", '\0', POPT_ARG_INT, &opt_align_payload, 0, N_("Align payload at <n> sector boundaries - for luksFormat"), N_("SECTORS") },
|
||||
POPT_TABLEEND
|
||||
};
|
||||
poptContext popt_context;
|
||||
struct action_type *action;
|
||||
char *aname;
|
||||
int r;
|
||||
const char *null_action_argv[] = {NULL};
|
||||
|
||||
setlocale(LC_ALL, "");
|
||||
bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
|
||||
textdomain(GETTEXT_PACKAGE);
|
||||
|
||||
popt_context = poptGetContext(PACKAGE, argc, (const char **)argv,
|
||||
popt_options, 0);
|
||||
poptSetOtherOptionHelp(popt_context,
|
||||
N_("[OPTION...] <action> <action-specific>]"));
|
||||
|
||||
while((r = poptGetNextOpt(popt_context)) > 0) {
|
||||
unsigned long long ull_value;
|
||||
char *endp;
|
||||
|
||||
ull_value = strtoull(popt_tmp, &endp, 0);
|
||||
if (*endp || !*popt_tmp)
|
||||
r = POPT_ERROR_BADNUMBER;
|
||||
|
||||
switch(r) {
|
||||
case 1:
|
||||
opt_size = ull_value;
|
||||
break;
|
||||
case 2:
|
||||
opt_offset = ull_value;
|
||||
break;
|
||||
case 3:
|
||||
opt_skip = ull_value;
|
||||
break;
|
||||
}
|
||||
|
||||
if (r < 0)
|
||||
break;
|
||||
}
|
||||
|
||||
if (r < -1)
|
||||
usage(popt_context, 1, poptStrerror(r),
|
||||
poptBadOption(popt_context, POPT_BADOPTION_NOALIAS));
|
||||
if (opt_version_mode) {
|
||||
printf("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
if (opt_key_size % 8)
|
||||
usage(popt_context, 1,
|
||||
_("Key size must be a multiple of 8 bits"),
|
||||
poptGetInvocationName(popt_context));
|
||||
|
||||
if (!(aname = (char *)poptGetArg(popt_context)))
|
||||
usage(popt_context, 1, _("Argument <action> missing."),
|
||||
poptGetInvocationName(popt_context));
|
||||
for(action = action_types; action->type; action++)
|
||||
if (strcmp(action->type, aname) == 0)
|
||||
break;
|
||||
if (!action->type)
|
||||
usage(popt_context, 1, _("Unknown action."),
|
||||
poptGetInvocationName(popt_context));
|
||||
|
||||
action_argc = 0;
|
||||
action_argv = poptGetArgs(popt_context);
|
||||
/* Make return values of poptGetArgs more consistent in case of remaining argc = 0 */
|
||||
if(!action_argv)
|
||||
action_argv = null_action_argv;
|
||||
|
||||
/* Count args, somewhat unnice, change? */
|
||||
while(action_argv[action_argc] != NULL)
|
||||
action_argc++;
|
||||
|
||||
if(action_argc < action->required_action_argc) {
|
||||
char buf[128];
|
||||
snprintf(buf, 128,_("%s: requires %s as arguments"), action->type, action->arg_desc);
|
||||
usage(popt_context, 1, buf,
|
||||
poptGetInvocationName(popt_context));
|
||||
}
|
||||
return action->handler(action->arg);
|
||||
}
|
||||
|
||||
// Local Variables:
|
||||
// c-basic-offset: 8
|
||||
// indent-tabs-mode: nil
|
||||
// End:
|
||||
Reference in New Issue
Block a user