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nwztools/scsitool: add option to force/specify series

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We cannot auto-detect a device if we don't know its model ID, but we can't know
the model ID if we haven't decrypted the upgrade which requires the key. The only
way to solve this chicken-and-egg problem is to get the NVP table from kernel,
create an empty series in the database (no model ID), then get the key using
scsitool and forcing the model (using this commit), then decrypt the upgrade
and get the model ID list.

Change-Id: I8eced486a5f6a1a99028b25fdc4f87a3b11e31a8
This commit is contained in:
Amaury Pouly 2017-01-04 17:10:48 +01:00
parent dbeb6db1b5
commit ad2297d353
1 changed files with 65 additions and 51 deletions
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116
utils/nwztools/scsitools/scsitool.c
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@ -46,20 +46,10 @@
#endif
bool g_debug = false;
bool g_force = false;
const char *g_force_series = NULL;
char *g_out_prefix = NULL;
int g_dev_fd = 0;
#define let_the_force_flow(x) do { if(!g_force) return x; } while(0)
#define continue_the_force(x) if(x) let_the_force_flow(x)
#define check_field(v_exp, v_have, str_ok, str_bad) \
if((v_exp) != (v_have)) \
{ cprintf(RED, str_bad); let_the_force_flow(__LINE__); } \
else { cprintf(RED, str_ok); }
#define errorf(...) do { cprintf(GREY, __VA_ARGS__); return __LINE__; } while(0)
#if 0
void *buffer_alloc(int sz)
{
@ -362,42 +352,66 @@ int get_dnk_prop(int argc, char **argv)
int get_model_and_series(int *model_index, int *series_index)
{
/* we need to get the model ID: code stolen from get_dnk_prop */
uint8_t mid_buf[4];
int mid_buf_size = sizeof(mid_buf);
int ret = do_dnk_cmd(true, 0x23, 9, 0, mid_buf, &mid_buf_size);
if(ret)
/* if the user forced the series, simply match by name, special for '?' which
* prompts the list */
if(g_force_series)
{
printf("Cannot get model ID from device: %d\n", ret);
return 2;
cprintf(RED, "User forced series, auto-detection disabled\n");
*series_index = -1;
*model_index = -1;
for(int i = 0; i < NWZ_SERIES_COUNT; i++)
if(strcmp(nwz_series[i].codename, g_force_series) == 0)
*series_index = i;
/* display list on error */
if(*series_index == -1)
{
if(strcmp(g_force_series, "?") != 0)
cprintf(GREY, "Unrecognized series '%s'\n", g_force_series);
cprintf(OFF, "Series list:\n");
for(int i = 0; i < NWZ_SERIES_COUNT; i++)
printf(" %-10s %s\n", nwz_series[i].codename, nwz_series[i].name);
return -1;
}
}
if(mid_buf_size != sizeof(mid_buf))
else
{
printf("Cannot get model ID from device: device didn't send the expected amount of data\n");
return 3;
/* we need to get the model ID: code stolen from get_dnk_prop */
uint8_t mid_buf[4];
int mid_buf_size = sizeof(mid_buf);
int ret = do_dnk_cmd(true, 0x23, 9, 0, mid_buf, &mid_buf_size);
if(ret)
{
cprintf(RED, "Cannot get model ID from device: %d\n", ret);
return 2;
}
if(mid_buf_size != sizeof(mid_buf))
{
cprintf(RED, "Cannot get model ID from device: device didn't send the expected amount of data\n");
return 3;
}
unsigned long model_id = get_big_endian32(&mid_buf);
*model_index = -1;
for(int i = 0; i < NWZ_MODEL_COUNT; i++)
if(nwz_model[i].mid == model_id)
*model_index = i;
if(*model_index == -1)
{
cprintf(RED, "Your device is not supported. Please contact developers.\n");
return 3;
}
*series_index = -1;
for(int i = 0; i < NWZ_SERIES_COUNT; i++)
for(int j = 0; j < nwz_series[i].mid_count; j++)
if(nwz_series[i].mid[j] == model_id)
*series_index = i;
if(*series_index == -1)
{
printf("Your device is not supported. Please contact developers.\n");
return 3;
}
}
unsigned long model_id = get_big_endian32(&mid_buf);
*model_index = -1;
for(int i = 0; i < NWZ_MODEL_COUNT; i++)
if(nwz_model[i].mid == model_id)
*model_index = i;
cprintf_field("Model: ", "%s\n", *model_index == -1 ? "Unknown" : nwz_model[*model_index].name);
if(*model_index == -1)
{
printf("Your device is not supported. Please contact developers.\n");
return 3;
}
*series_index = -1;
for(int i = 0; i < NWZ_SERIES_COUNT; i++)
for(int j = 0; j < nwz_series[i].mid_count; j++)
if(nwz_series[i].mid[j] == model_id)
*series_index = i;
cprintf_field("Series: ", "%s\n", *series_index == -1 ? "Unknown" : nwz_series[*series_index].name);
if(*series_index == -1)
{
printf("Your device is not supported. Please contact developers.\n");
return 3;
}
return 0;
}
@ -847,11 +861,11 @@ static void usage(void)
{
printf("Usage: scsitool [options] <dev> <command> [arguments]\n");
printf("Options:\n");
printf(" -o <prefix>\tSet output prefix\n");
printf(" -f/--force\tForce to continue on errors\n");
printf(" -?/--help\tDisplay this message\n");
printf(" -d/--debug\tDisplay debug messages\n");
printf(" -c/--no-color\tDisable color output\n");
printf(" -o <prefix> Set output prefix\n");
printf(" -?/--help Display this message\n");
printf(" -d/--debug Display debug messages\n");
printf(" -c/--no-color Disable color output\n");
printf(" -s/--series <name> Force series (disable auto-detection, use '?' for the list)\n");
printf("Commands:\n");
for(unsigned i = 0; i < NR_CMDS; i++)
printf(" %s\t%s\n", cmd_list[i].name, cmd_list[i].desc);
@ -867,11 +881,11 @@ int main(int argc, char **argv)
{"help", no_argument, 0, '?'},
{"debug", no_argument, 0, 'd'},
{"no-color", no_argument, 0, 'c'},
{"force", no_argument, 0, 'f'},
{"series", required_argument, 0, 's'},
{0, 0, 0, 0}
};
int c = getopt_long(argc, argv, "?dcfo:", long_options, NULL);
int c = getopt_long(argc, argv, "?dcfo:s:", long_options, NULL);
if(c == -1)
break;
switch(c)
@ -884,15 +898,15 @@ int main(int argc, char **argv)
case 'd':
g_debug = true;
break;
case 'f':
g_force = true;
break;
case '?':
usage();
break;
case 'o':
g_out_prefix = optarg;
break;
case 's':
g_force_series = optarg;
break;
default:
abort();
}