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Implemented arg parsing for NRO env. When args aren't available, set __system_argv to {ptr to NULL} instead of NULL.

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This commit is contained in:
yellows8 2018-02-17 21:25:21 -05:00
parent a1462c8b0b
commit 20cd940095
1 changed files with 85 additions and 68 deletions
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153
nx/source/runtime/argv.c
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@ -13,6 +13,8 @@ extern char* fake_heap_end;
extern u32 __argdata__;
static char* g_argv_empty = NULL;
void argvSetup(void)
{
Result rc=0;
@ -21,22 +23,20 @@ void argvSetup(void)
u8 *argdata = (u8*)&__argdata__;
u32 *arg32 = (u32*)argdata;
u64 argdata_allocsize;
u64 argdata_strsize;
u32 argvptr_pos;
u64 argdata_allocsize=0;
u64 argdata_strsize=0;
u32 argvptr_pos=0;
u32 max_argv;
u32 argi;
u32 arglen=0;
bool quote_flag=0;
bool end_flag=0;
char *args;
char *args = NULL;
char *argstart;
char *argstorage;
__system_argc = 0;
__system_argv = NULL;
// TODO: Use envHasArgv()/envGetArgv() here for the NRO case.
__system_argv = &g_argv_empty;
if (envIsNso()) {
memset(&meminfo, 0, sizeof(meminfo));
@ -57,67 +57,84 @@ void argvSetup(void)
argvptr_pos = 0x20 + argdata_strsize+1;
if (argvptr_pos >= argdata_allocsize) return;
argstorage = (char*)&argdata[argvptr_pos];
argvptr_pos += (argdata_strsize+1 + 0x9) & ~0x7;
if (argvptr_pos >= argdata_allocsize) return;
max_argv = (argdata_allocsize - argvptr_pos) >> 3;
if (max_argv < 2) return;
__system_argv = (char**)&argdata[argvptr_pos];
argstart = NULL;
for(argi=0; argi<argdata_strsize; argi++) {
if (argstart == NULL && isspace(args[argi])) continue;
if (argstart == NULL) {
if (args[argi] == '"') {
argstart = &args[argi+1];
quote_flag = 1;
}
else if(args[argi]!=0) {
argstart = &args[argi];
arglen++;
}
}
else {
end_flag = 0;
if (quote_flag && args[argi] == '"') {
end_flag = 1;
}
else if (isspace(args[argi])) {
end_flag = 1;
}
else if(args[argi]!=0) {
arglen++;
}
if ((args[argi]==0 || end_flag) && arglen) {
strncpy(argstorage, argstart, arglen);
argstorage[arglen] = 0;
__system_argv[__system_argc] = argstorage;
__system_argc++;
argstart = NULL;
quote_flag = 0;
argstorage+= arglen+1;
arglen = 0;
if (__system_argc >= max_argv) break;
}
}
}
if (arglen && __system_argc < max_argv) {
strncpy(argstorage, argstart, arglen);
argstorage[arglen] = 0;
__system_argv[__system_argc] = argstorage;
__system_argc++;
}
__system_argv[__system_argc] = NULL;
}
else if (envHasArgv()) {
args = envGetArgv();
argdata_allocsize = 0x9000;//Use the same size as NSO.
argdata_strsize = strlen(args);
argdata = (u8*)fake_heap_start;
if (argdata_strsize==0) return;
if (fake_heap_end - fake_heap_start < argdata_allocsize) return;
fake_heap_start += argdata_allocsize;
argvptr_pos = 0;
memset(argdata, 0, argdata_allocsize);
}
argstorage = (char*)&argdata[argvptr_pos];
argvptr_pos += (argdata_strsize+1 + 0x9) & ~0x7;
if (argvptr_pos >= argdata_allocsize) return;
max_argv = (argdata_allocsize - argvptr_pos) >> 3;
if (max_argv < 2) return;
__system_argv = (char**)&argdata[argvptr_pos];
argstart = NULL;
for(argi=0; argi<argdata_strsize; argi++) {
if (argstart == NULL && isspace(args[argi])) continue;
if (argstart == NULL) {
if (args[argi] == '"') {
argstart = &args[argi+1];
quote_flag = 1;
}
else if(args[argi]!=0) {
argstart = &args[argi];
arglen++;
}
}
else {
end_flag = 0;
if (quote_flag && args[argi] == '"') {
end_flag = 1;
}
else if (isspace(args[argi])) {
end_flag = 1;
}
else if(args[argi]!=0) {
arglen++;
}
if ((args[argi]==0 || end_flag) && arglen) {
strncpy(argstorage, argstart, arglen);
argstorage[arglen] = 0;
__system_argv[__system_argc] = argstorage;
__system_argc++;
argstart = NULL;
quote_flag = 0;
argstorage+= arglen+1;
arglen = 0;
if (__system_argc >= max_argv) break;
}
}
}
if (arglen && __system_argc < max_argv) {
strncpy(argstorage, argstart, arglen);
argstorage[arglen] = 0;
__system_argv[__system_argc] = argstorage;
__system_argc++;
}
__system_argv[__system_argc] = NULL;
}