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Scripting: Dynamically update envvars at runtime

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d0k3 2017-08-24 15:46:36 +02:00
parent 0c07b17df1
commit de230fd8e5
1 changed files with 74 additions and 64 deletions
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134
source/filesys/fsscript.c
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@ -111,42 +111,6 @@ static inline bool strntohex(const char* str, u8* hex, u32 len) {
return true; return true;
} }
char* get_var(const char* name, char** endptr) {
Gm9ScriptVar* vars = (Gm9ScriptVar*) VAR_BUFFER;
u32 max_vars = VAR_BUFFER_SIZE / sizeof(Gm9ScriptVar);
u32 name_len = 0;
char* vname = NULL;
if (!endptr) { // no endptr, varname is verbatim
vname = (char*) name;
name_len = strnlen(vname, _VAR_NAME_LEN);
} else { // endptr given, varname is in [VAR] format
vname = (char*) name + 1;
if (*name != '[') return NULL;
for (name_len = 0; vname[name_len] != ']'; name_len++)
if ((name_len >= _VAR_NAME_LEN) || !vname[name_len]) return NULL;
*endptr = vname + name_len + 1;
}
u32 n_var = 0;
for (Gm9ScriptVar* var = vars; n_var < max_vars; n_var++, var++) {
if (!*(var->name) || (strncmp(var->name, vname, name_len) == 0)) break;
}
if (n_var >= max_vars || !*(vars[n_var].name)) n_var = 0;
if (n_var && (strncmp(vars[n_var].name, "DATESTAMP", _VAR_NAME_LEN) == 0)) {
DsTime dstime;
get_dstime(&dstime);
snprintf(vars[n_var].content, _VAR_CNT_LEN, "%02lX%02lX%02lX", (u32) dstime.bcd_Y, (u32) dstime.bcd_M, (u32) dstime.bcd_D);
} else if (n_var && (strncmp(vars[n_var].name, "TIMESTAMP", _VAR_NAME_LEN) == 0)) {
DsTime dstime;
get_dstime(&dstime);
snprintf(vars[n_var].content, _VAR_CNT_LEN, "%02lX%02lX%02lX", (u32) dstime.bcd_h, (u32) dstime.bcd_m, (u32) dstime.bcd_s);
}
return vars[n_var].content;
}
char* set_var(const char* name, const char* content) { char* set_var(const char* name, const char* content) {
Gm9ScriptVar* vars = (Gm9ScriptVar*) VAR_BUFFER; Gm9ScriptVar* vars = (Gm9ScriptVar*) VAR_BUFFER;
u32 max_vars = VAR_BUFFER_SIZE / sizeof(Gm9ScriptVar); u32 max_vars = VAR_BUFFER_SIZE / sizeof(Gm9ScriptVar);
@ -166,15 +130,80 @@ char* set_var(const char* name, const char* content) {
return vars[n_var].content; return vars[n_var].content;
} }
bool init_vars(const char* path_script) { void upd_var(const char* name) {
// reset var buffer
memset(VAR_BUFFER, 0x00, VAR_BUFFER_SIZE);
// device serial // device serial
if (!name || (strncmp(name, "SERIAL", _VAR_NAME_LEN) == 0)) {
char env_serial[16] = { 0 }; char env_serial[16] = { 0 };
if ((FileGetData("1:/rw/sys/SecureInfo_A", (u8*) env_serial, 0xF, 0x102) != 0xF) && if ((FileGetData("1:/rw/sys/SecureInfo_A", (u8*) env_serial, 0xF, 0x102) != 0xF) &&
(FileGetData("1:/rw/sys/SecureInfo_B", (u8*) env_serial, 0xF, 0x102) != 0xF)) (FileGetData("1:/rw/sys/SecureInfo_B", (u8*) env_serial, 0xF, 0x102) != 0xF))
snprintf(env_serial, 0xF, "UNKNOWN"); snprintf(env_serial, 0xF, "UNKNOWN");
set_var("SERIAL", env_serial);
}
// device sysnand / emunand id0
for (u32 emu = 0; emu <= 1; emu++) {
const char* env_id0_name = (emu) ? "EMUID0" : "SYSID0";
if (!name || (strncmp(name, env_id0_name, _VAR_NAME_LEN) == 0)) {
const char* path = emu ? "4:/private/movable.sed" : "1:/private/movable.sed";
char env_id0[32+1];
u8 sd_keyy[0x10];
if (FileGetData(path, sd_keyy, 0x10, 0x110) == 0x10) {
u32 sha256sum[8];
sha_quick(sha256sum, sd_keyy, 0x10, SHA256_MODE);
snprintf(env_id0, 32+1, "%08lx%08lx%08lx%08lx",
sha256sum[0], sha256sum[1], sha256sum[2], sha256sum[3]);
} else snprintf(env_id0, 0xF, "UNKNOWN");
set_var(env_id0_name, env_id0);
}
}
// datestamp & timestamp
if (!name || (strncmp(name, "DATESTAMP", _VAR_NAME_LEN) == 0) || (strncmp(name, "TIMESTAMP", _VAR_NAME_LEN) == 0)) {
DsTime dstime;
get_dstime(&dstime);
char env_date[16+1];
char env_time[16+1];
snprintf(env_date, _VAR_CNT_LEN, "%02lX%02lX%02lX", (u32) dstime.bcd_Y, (u32) dstime.bcd_M, (u32) dstime.bcd_D);
snprintf(env_time, _VAR_CNT_LEN, "%02lX%02lX%02lX", (u32) dstime.bcd_h, (u32) dstime.bcd_m, (u32) dstime.bcd_s);
if (!name || (strncmp(name, "DATESTAMP", _VAR_NAME_LEN) == 0)) set_var("DATESTAMP", env_date);
if (!name || (strncmp(name, "TIMESTAMP", _VAR_NAME_LEN) == 0)) set_var("TIMESTAMP", env_time);
}
}
char* get_var(const char* name, char** endptr) {
Gm9ScriptVar* vars = (Gm9ScriptVar*) VAR_BUFFER;
u32 max_vars = VAR_BUFFER_SIZE / sizeof(Gm9ScriptVar);
u32 name_len = 0;
char* pname = NULL;
if (!endptr) { // no endptr, varname is verbatim
pname = (char*) name;
name_len = strnlen(pname, _VAR_NAME_LEN);
} else { // endptr given, varname is in [VAR] format
pname = (char*) name + 1;
if (*name != '[') return NULL;
for (name_len = 0; pname[name_len] != ']'; name_len++)
if ((name_len >= _VAR_NAME_LEN) || !pname[name_len]) return NULL;
*endptr = pname + name_len + 1;
}
char vname[_VAR_NAME_LEN];
strncpy(vname, pname, name_len);
upd_var(vname); // handle dynamic env vars
u32 n_var = 0;
for (Gm9ScriptVar* var = vars; n_var < max_vars; n_var++, var++) {
if (!*(var->name) || (strncmp(var->name, vname, name_len) == 0)) break;
}
if (n_var >= max_vars || !*(vars[n_var].name)) n_var = 0;
return vars[n_var].content;
}
bool init_vars(const char* path_script) {
// reset var buffer
memset(VAR_BUFFER, 0x00, VAR_BUFFER_SIZE);
// current path // current path
char curr_dir[_VAR_CNT_LEN]; char curr_dir[_VAR_CNT_LEN];
@ -182,30 +211,11 @@ bool init_vars(const char* path_script) {
char* slash = strrchr(curr_dir, '/'); char* slash = strrchr(curr_dir, '/');
if (slash) *slash = '\0'; if (slash) *slash = '\0';
// device sysnand / emunand id0
char env_sys_id0[32+1];
char env_emu_id0[32+1];
for (u32 emu = 0; emu <= 1; emu++) {
u8 sd_keyy[0x10];
char* env_id0 = emu ? env_emu_id0 : env_sys_id0;
char* path = emu ? "4:/private/movable.sed" : "1:/private/movable.sed";
if (FileGetData(path, sd_keyy, 0x10, 0x110) == 0x10) {
u32 sha256sum[8];
sha_quick(sha256sum, sd_keyy, 0x10, SHA256_MODE);
snprintf(env_id0, 32+1, "%08lx%08lx%08lx%08lx",
sha256sum[0], sha256sum[1], sha256sum[2], sha256sum[3]);
} else snprintf(env_id0, 0xF, "UNKNOWN");
}
// set env vars // set env vars
set_var("NULL", ""); // this one is special and should not be changed later set_var("NULL", ""); // this one is special and should not be changed later
set_var("SERIAL", env_serial); set_var("CURRDIR", curr_dir); // script path, never changes
set_var("GM9OUT", OUTPUT_PATH); set_var("GM9OUT", OUTPUT_PATH); // output path, never changes
set_var("CURRDIR", curr_dir); upd_var(NULL); // set all dynamic environment vars
set_var("SYSID0", env_sys_id0);
set_var("EMUID0", env_emu_id0);
set_var("DATESTAMP", ""); // needs to be set on every access
set_var("TIMESTAMP", ""); // needs to be set on every access
return true; return true;
} }