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#include "system.h"
#include <errno.h>
#include <sys/wait.h>
#include <termios.h>
#include <popt.h>
#include <rpm/rpmcli.h>
#include <rpm/rpmsign.h>
#include "cliutils.h"
#include "debug.h"
enum modes {
MODE_NONE = 0,
MODE_ADDSIGN = (1 << 0),
MODE_RESIGN = (1 << 1),
MODE_DELSIGN = (1 << 2),
MODE_DELFILESIGN = (1 << 3),
};
static int mode = MODE_NONE;
#if defined(WITH_IMAEVM) || defined(WITH_FSVERITY)
static int fskpass = 0;
static char * fileSigningKey = NULL;
#endif
#ifdef WITH_FSVERITY
static char * fileSigningCert = NULL;
static char * verityAlgorithm = NULL;
#endif
static struct rpmSignArgs sargs = {NULL, 0, 0};
static struct poptOption signOptsTable[] = {
{ "addsign", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR), &mode, MODE_ADDSIGN,
N_("sign package(s)"), NULL },
{ "resign", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR), &mode, MODE_RESIGN,
N_("sign package(s) (identical to --addsign)"), NULL },
{ "delsign", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR), &mode, MODE_DELSIGN,
N_("delete package signatures"), NULL },
#if defined(WITH_IMAEVM) || defined(WITH_FSVERITY)
{ "delfilesign", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR), &mode,
MODE_DELFILESIGN, N_("delete IMA and fsverity file signatures"), NULL },
#endif
{ "rpmv3", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR),
&sargs.signflags, RPMSIGN_FLAG_RPMV3,
N_("create rpm v3 header+payload signatures") },
#ifdef WITH_IMAEVM
{ "signfiles", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR),
&sargs.signflags, RPMSIGN_FLAG_IMA,
N_("sign package(s) files"), NULL},
#endif
#ifdef WITH_FSVERITY
{ "signverity", '\0', (POPT_ARG_VAL|POPT_ARGFLAG_OR),
&sargs.signflags, RPMSIGN_FLAG_FSVERITY,
N_("generate fsverity signatures for package(s) files"), NULL},
{ "verityalgo", '\0', POPT_ARG_STRING, &verityAlgorithm, 0,
N_("algorithm to use for verity signatures, default sha256"),
N_("<algorithm>") },
{ "certpath", '\0', POPT_ARG_STRING, &fileSigningCert, 0,
N_("use file signing cert <cert>"),
N_("<cert>") },
#endif
#if defined(WITH_IMAEVM) || defined(WITH_FSVERITY)
{ "fskpath", '\0', POPT_ARG_STRING, &fileSigningKey, 0,
N_("use file signing key <key>"),
N_("<key>") },
{ "fskpass", '\0', POPT_ARG_NONE, &fskpass, 0,
N_("prompt for file signing key password"), NULL},
#endif
POPT_TABLEEND
};
static struct poptOption optionsTable[] = {
{ NULL, '\0', POPT_ARG_INCLUDE_TABLE, signOptsTable, 0,
N_("Signature options:"), NULL },
{ NULL, '\0', POPT_ARG_INCLUDE_TABLE, rpmcliAllPoptTable, 0,
N_("Common options for all rpm modes and executables:"), NULL },
POPT_AUTOALIAS
POPT_AUTOHELP
POPT_TABLEEND
};
#if defined(WITH_IMAEVM) || defined(WITH_FSVERITY)
static int flags_sign_files(int flags)
{
return (flags & (RPMSIGN_FLAG_IMA | RPMSIGN_FLAG_FSVERITY) ? 1 : 0);
}
static char *get_fskpass(void)
{
struct termios flags, tmp_flags;
int passlen = 64;
char *password = xmalloc(passlen);
char *pwd = NULL;
tcgetattr(fileno(stdin), &flags);
tmp_flags = flags;
tmp_flags.c_lflag &= ~ECHO;
tmp_flags.c_lflag |= ECHONL;
if (tcsetattr(fileno(stdin), TCSANOW, &tmp_flags) != 0) {
perror("tcsetattr");
goto exit;
}
printf("PEM password: ");
pwd = fgets(password, passlen, stdin);
if (tcsetattr(fileno(stdin), TCSANOW, &flags) != 0) {
perror("tcsetattr");
pwd = NULL;
goto exit;
}
exit:
if (pwd)
pwd[strlen(pwd) - 1] = '\0'; /* remove newline */
else
free(password);
return pwd;
}
#endif
/* TODO: permit overriding macro setup on the command line */
static int doSign(poptContext optCon, struct rpmSignArgs *sargs)
{
int rc = EXIT_FAILURE;
char * name = rpmExpand("%{?_gpg_name}", NULL);
if (rstreq(name, "")) {
fprintf(stderr, _("You must set \"%%_gpg_name\" in your macro file\n"));
goto exit;
}
#if defined(WITH_IMAEVM) || defined(WITH_FSVERITY)
if (fileSigningKey) {
rpmPushMacro(NULL, "_file_signing_key", NULL, fileSigningKey, RMIL_GLOBAL);
}
#ifdef WITH_FSVERITY
if (fileSigningCert) {
rpmPushMacro(NULL, "_file_signing_cert", NULL, fileSigningCert, RMIL_GLOBAL);
}
if (verityAlgorithm) {
rpmPushMacro(NULL, "_verity_algorithm", NULL, verityAlgorithm, RMIL_GLOBAL);
}
#endif
if (flags_sign_files(sargs->signflags)) {
char *fileSigningKeyPassword = NULL;
char *key = rpmExpand("%{?_file_signing_key}", NULL);
if (rstreq(key, "")) {
fprintf(stderr, _("You must set \"%%_file_signing_key\" in your macro file or on the command line with --fskpath\n"));
goto exit;
}
if (fskpass) {
fileSigningKeyPassword = get_fskpass();
}
if (fileSigningKeyPassword) {
rpmPushMacro(NULL, "_file_signing_key_password", NULL,
fileSigningKeyPassword, RMIL_CMDLINE);
memset(fileSigningKeyPassword, 0, strlen(fileSigningKeyPassword));
free(fileSigningKeyPassword);
}
free(key);
}
#endif
const char *arg;
rc = 0;
while ((arg = poptGetArg(optCon)) != NULL) {
if (rpmPkgSign(arg, sargs) < 0)
rc++;
}
exit:
free(name);
return rc;
}
int main(int argc, char *argv[])
{
int ec = EXIT_FAILURE;
poptContext optCon = NULL;
const char *arg;
optCon = rpmcliInit(argc, argv, optionsTable);
if (argc <= 1) {
printUsage(optCon, stderr, 0);
goto exit;
}
if (poptPeekArg(optCon) == NULL) {
argerror(_("no arguments given"));
}
#if defined(WITH_IMAEVM) || defined(WITH_FSVERITY)
if (fileSigningKey && !(flags_sign_files(sargs.signflags))) {
argerror(_("--fskpath may only be specified when signing files"));
}
#endif
switch (mode) {
case MODE_ADDSIGN:
case MODE_RESIGN:
ec = doSign(optCon, &sargs);
break;
case MODE_DELSIGN:
ec = 0;
while ((arg = poptGetArg(optCon)) != NULL) {
if (rpmPkgDelSign(arg, &sargs) < 0)
ec++;
}
break;
case MODE_DELFILESIGN:
ec = 0;
while ((arg = poptGetArg(optCon)) != NULL) {
if (rpmPkgDelFileSign(arg, &sargs) < 0)
ec++;
}
break;
case MODE_NONE:
printUsage(optCon, stderr, 0);
break;
default:
argerror(_("only one major mode may be specified"));
break;
}
exit:
rpmcliFini(optCon);
return RETVAL(ec);
}
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