int
main(void)
{
struct api_signature *sig = NULL;
int load_type, load_unit, load_slice, load_partition;
int i;
const char * loaderdev;
/*
* If we can't find the magic signature and related info, exit with a
* unique error code that U-Boot reports as "## Application terminated,
* rc = 0xnnbadab1". Hopefully 'badab1' looks enough like "bad api" to
* provide a clue. It's better than 0xffffffff anyway.
*/
if (!api_search_sig(&sig))
return (0x01badab1);
syscall_ptr = sig->syscall;
if (syscall_ptr == NULL)
return (0x02badab1);
if (sig->version > API_SIG_VERSION)
return (0x03badab1);
/* Clear BSS sections */
bzero(__sbss_start, __sbss_end - __sbss_start);
bzero(__bss_start, _end - __bss_start);
/*
* Initialise the heap as early as possible. Once this is done,
* alloc() is usable. The stack is buried inside us, so this is safe.
*/
uboot_heap_start = round_page((uintptr_t)end);
uboot_heap_end = uboot_heap_start + 512 * 1024;
setheap((void *)uboot_heap_start, (void *)uboot_heap_end);
/*
* Set up console.
*/
cons_probe();
printf("Compatible U-Boot API signature found @%x\n", (uint32_t)sig);
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
printf("\n");
dump_sig(sig);
dump_addr_info();
meminfo();
/*
* Enumerate U-Boot devices
*/
if ((devs_no = ub_dev_enum()) == 0)
panic("no U-Boot devices found");
printf("Number of U-Boot devices: %d\n", devs_no);
get_load_device(&load_type, &load_unit, &load_slice, &load_partition);
/*
* March through the device switch probing for things.
*/
for (i = 0; devsw[i] != NULL; i++) {
if (devsw[i]->dv_init == NULL)
continue;
if ((devsw[i]->dv_init)() != 0)
continue;
printf("Found U-Boot device: %s\n", devsw[i]->dv_name);
currdev.d_dev = devsw[i];
currdev.d_type = currdev.d_dev->dv_type;
currdev.d_unit = 0;
if ((load_type == -1 || (load_type & DEV_TYP_STOR)) &&
strcmp(devsw[i]->dv_name, "disk") == 0) {
if (probe_disks(i, load_type, load_unit, load_slice,
load_partition) == 0)
break;
}
if ((load_type == -1 || (load_type & DEV_TYP_NET)) &&
strcmp(devsw[i]->dv_name, "net") == 0)
break;
}
/*
* If we couldn't find a boot device, return an error to u-boot.
* U-boot may be running a boot script that can try something different
* so returning an error is better than forcing a reboot.
*/
if (devsw[i] == NULL) {
printf("No boot device found!\n");
return (0xbadef1ce);
}
env_setenv("currdev", EV_VOLATILE, uboot_fmtdev(&currdev),
uboot_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, uboot_fmtdev(&currdev),
env_noset, env_nounset);
setenv("LINES", "24", 1); /* optional */
setenv("prompt", "loader>", 1);
archsw.arch_loadaddr = uboot_loadaddr;
archsw.arch_getdev = uboot_getdev;
archsw.arch_copyin = uboot_copyin;
archsw.arch_copyout = uboot_copyout;
archsw.arch_readin = uboot_readin;
archsw.arch_autoload = uboot_autoload;
interact(); /* doesn't return */
return (0);
}
int
main(void)
{
struct api_signature *sig = NULL;
int i;
struct open_file f;
if (!api_search_sig(&sig))
return (-1);
syscall_ptr = sig->syscall;
if (syscall_ptr == NULL)
return (-2);
if (sig->version > API_SIG_VERSION)
return (-3);
/* Clear BSS sections */
bzero(__sbss_start, __sbss_end - __sbss_start);
bzero(__bss_start, _end - __bss_start);
/*
* Set up console.
*/
cons_probe();
printf("Compatible API signature found @%x\n", (uint32_t)sig);
dump_sig(sig);
dump_addr_info();
/*
* Initialise the heap as early as possible. Once this is done,
* alloc() is usable. The stack is buried inside us, so this is
* safe.
*/
setheap((void *)end, (void *)(end + 512 * 1024));
/*
* Enumerate U-Boot devices
*/
if ((devs_no = ub_dev_enum()) == 0)
panic("no U-Boot devices found");
printf("Number of U-Boot devices: %d\n", devs_no);
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
meminfo();
/*
* March through the device switch probing for things.
*/
for (i = 0; devsw[i] != NULL; i++) {
if (devsw[i]->dv_init == NULL)
continue;
if ((devsw[i]->dv_init)() != 0)
continue;
printf("\nDevice: %s\n", devsw[i]->dv_name);
currdev.d_dev = devsw[i];
currdev.d_type = currdev.d_dev->dv_type;
currdev.d_unit = 0;
if (strncmp(devsw[i]->dv_name, "disk",
strlen(devsw[i]->dv_name)) == 0) {
f.f_devdata = &currdev;
currdev.d_disk.slice = 0;
if (devsw[i]->dv_open(&f,&currdev) == 0)
break;
}
if (strncmp(devsw[i]->dv_name, "net",
strlen(devsw[i]->dv_name)) == 0)
break;
}
if (devsw[i] == NULL)
panic("No boot device found!");
env_setenv("currdev", EV_VOLATILE, uboot_fmtdev(&currdev),
uboot_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, uboot_fmtdev(&currdev),
env_noset, env_nounset);
setenv("LINES", "24", 1); /* optional */
setenv("prompt", "loader>", 1);
archsw.arch_getdev = uboot_getdev;
archsw.arch_copyin = uboot_copyin;
archsw.arch_copyout = uboot_copyout;
archsw.arch_readin = uboot_readin;
archsw.arch_autoload = uboot_autoload;
interact(); /* doesn't return */
return (0);
}
int
main(void)
{
struct api_signature *sig = NULL;
int diskdev, i, netdev, usedev;
struct open_file f;
const char * loaderdev;
if (!api_search_sig(&sig))
return (-1);
syscall_ptr = sig->syscall;
if (syscall_ptr == NULL)
return (-2);
if (sig->version > API_SIG_VERSION)
return (-3);
/* Clear BSS sections */
bzero(__sbss_start, __sbss_end - __sbss_start);
bzero(__bss_start, _end - __bss_start);
/*
* Set up console.
*/
cons_probe();
printf("Compatible API signature found @%x\n", (uint32_t)sig);
dump_sig(sig);
dump_addr_info();
/*
* Initialise the heap as early as possible. Once this is done,
* alloc() is usable. The stack is buried inside us, so this is
* safe.
*/
setheap((void *)end, (void *)(end + 512 * 1024));
/*
* Enumerate U-Boot devices
*/
if ((devs_no = ub_dev_enum()) == 0)
panic("no U-Boot devices found");
printf("Number of U-Boot devices: %d\n", devs_no);
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
meminfo();
/*
* March through the device switch probing for things -- sort of.
*
* The devsw array will have one or two items in it. If
* LOADER_DISK_SUPPORT is defined the first item will be a disk (which
* may not actually work if u-boot didn't supply one). If
* LOADER_NET_SUPPORT is defined the next item will be a network
* interface. Again it may not actually work at the u-boot level.
*
* The original logic was to always use a disk if it could be
* successfully opened, otherwise use the network interface. Now that
* logic is amended to first check whether the u-boot environment
* contains a loaderdev variable which tells us which device to use. If
* it does, we use it and skip the original (second) loop which "probes"
* for a device. We still loop over the devsw just in case it ever gets
* expanded to hold more than 2 devices (but then unit numbers, which
* don't currently exist, may come into play). If the device named by
* loaderdev isn't found, fall back using to the old "probe" loop.
*
* The original probe loop still effectively behaves as it always has:
* the first usable disk device is choosen, and a network device is used
* only if no disk device is found. The logic has been reworked so that
* it examines (and thus lists) every potential device along the way
* instead of breaking out of the loop when the first device is found.
*/
loaderdev = ub_env_get("loaderdev");
usedev = -1;
if (loaderdev != NULL) {
for (i = 0; devsw[i] != NULL; i++) {
if (strcmp(loaderdev, devsw[i]->dv_name) == 0) {
if (devsw[i]->dv_init == NULL)
continue;
if ((devsw[i]->dv_init)() != 0)
continue;
usedev = i;
goto have_device;
}
}
printf("U-Boot env contains 'loaderdev=%s', "
"device not found.\n", loaderdev);
}
printf("Probing for bootable devices...\n");
diskdev = -1;
netdev = -1;
for (i = 0; devsw[i] != NULL; i++) {
if (devsw[i]->dv_init == NULL)
continue;
if ((devsw[i]->dv_init)() != 0)
continue;
printf("Bootable device: %s\n", devsw[i]->dv_name);
if (strncmp(devsw[i]->dv_name, "disk",
strlen(devsw[i]->dv_name)) == 0) {
f.f_devdata = &currdev;
currdev.d_dev = devsw[i];
currdev.d_type = currdev.d_dev->dv_type;
currdev.d_unit = 0;
currdev.d_disk.slice = 0;
if (devsw[i]->dv_open(&f, &currdev) == 0) {
devsw[i]->dv_close(&f);
if (diskdev == -1)
diskdev = i;
}
} else if (strncmp(devsw[i]->dv_name, "net",
strlen(devsw[i]->dv_name)) == 0) {
if (netdev == -1)
netdev = i;
}
}
if (diskdev != -1)
usedev = diskdev;
else if (netdev != -1)
usedev = netdev;
else
panic("No bootable devices found!\n");
have_device:
currdev.d_dev = devsw[usedev];
currdev.d_type = devsw[usedev]->dv_type;
currdev.d_unit = 0;
if (currdev.d_type == DEV_TYP_STOR)
currdev.d_disk.slice = 0;
printf("Current device: %s\n", currdev.d_dev->dv_name);
env_setenv("currdev", EV_VOLATILE, uboot_fmtdev(&currdev),
uboot_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, uboot_fmtdev(&currdev),
env_noset, env_nounset);
setenv("LINES", "24", 1); /* optional */
setenv("prompt", "loader>", 1);
archsw.arch_getdev = uboot_getdev;
archsw.arch_copyin = uboot_copyin;
archsw.arch_copyout = uboot_copyout;
archsw.arch_readin = uboot_readin;
archsw.arch_autoload = uboot_autoload;
interact(); /* doesn't return */
return (0);
}
struct tcp_sig* fingerprint_tcp(u8 to_srv, struct packet_data* pk,
struct packet_flow* f) {
struct tcp_sig* sig;
struct tcp_sig_record* m;
sig = ck_alloc(sizeof(struct tcp_sig));
packet_to_sig(pk, sig);
/* Detect packets generated by p0f-sendsyn; they require special
handling to provide the user with response fingerprints, but not
interfere with NAT scores and such. */
if (pk->tcp_type == TCP_SYN && pk->win == SPECIAL_WIN &&
pk->mss == SPECIAL_MSS) f->sendsyn = 1;
if (to_srv)
start_observation(f->sendsyn ? "sendsyn probe" : "syn", 4, 1, f);
else
start_observation(f->sendsyn ? "sendsyn response" : "syn+ack", 4, 0, f);
tcp_find_match(to_srv, sig, 0, f->syn_mss);
if ((m = sig->matched)) {
OBSERVF((m->class_id == -1 || f->sendsyn) ? "app" : "os", "%s%s%s",
fp_os_names[m->name_id], m->flavor ? " " : "",
m->flavor ? m->flavor : (u8*)"");
} else {
add_observation_field("os", NULL);
}
if (m && m->bad_ttl) {
OBSERVF("dist", "<= %u", sig->dist);
} else {
if (to_srv) f->client->distance = sig->dist;
else f->server->distance = sig->dist;
OBSERVF("dist", "%u", sig->dist);
}
add_observation_field("params", dump_flags(pk, sig));
add_observation_field("raw_sig", dump_sig(pk, sig, f->syn_mss));
if (pk->tcp_type == TCP_SYN) f->syn_mss = pk->mss;
/* That's about as far as we go with non-OS signatures. */
if (m && m->class_id == -1) {
verify_tool_class(to_srv, f, m->sys, m->sys_cnt);
ck_free(sig);
return NULL;
}
if (f->sendsyn) {
ck_free(sig);
return NULL;
}
score_nat(to_srv, sig, f);
return sig;
}