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Implemented actual args handling in __system_initArgv().

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This commit is contained in:
yellows8 2017-12-11 19:18:45 -05:00
parent 79e573472e
commit a0ebe68f54
1 changed files with 96 additions and 1 deletions
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97
nx/source/system/initArgv.c
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@ -1,6 +1,7 @@
#include <switch.h>
#include <string.h>
#include <ctype.h>
// System globals we define here
int __system_argc;
@ -9,12 +10,106 @@ char** __system_argv;
extern char* fake_heap_start;
extern char* fake_heap_end;
extern u32 __argdata__;
void __system_initArgv(void)
{
//TODO: How to load args?
Result rc=0;
MemInfo meminfo;
u32 pageinfo=0;
u8 *argdata = (u8*)&__argdata__;
u32 *arg32 = (u32*)argdata;
u32 argdata_allocsize;
u32 argdata_strsize;
u32 argvptr_pos;
u32 max_argv;
u32 argi;
u32 arglen=0;
bool quote_flag=0;
bool end_flag=0;
char *args;
char *argstart;
char *argstorage;
__system_argc = 0;
__system_argv = NULL;
rc = svcQueryMemory(&meminfo, &pageinfo, (u64)argdata);
if (R_FAILED(rc) || meminfo.perm!=0x3) return; //This memory is only mapped when arguments were passed.
argdata_allocsize = arg32[0];
argdata_strsize = arg32[1];
args = (char*)&argdata[0x20];
if (argdata_allocsize==0 || argdata_strsize==0) return;
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;
//TODO: How to handle args for NRO?
/*
int i;
const char* arglist = envGetSystemArgList();