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flips.cpp
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flips.cpp
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//Module name: Floating IPS, shared core for all frontends
//Author: Alcaro
//Date: See Git history
//Licence: GPL v3.0 or higher
#include "flips.h"
#include "crc32.h"
#ifdef __MINGW32__
//get rid of dependencies on libstdc++, they waste 200KB on this platform
void* operator new(size_t n) { return malloc(n); } // forget allocation failures, let them segfault.
void operator delete(void * p) { free(p); }
void operator delete(void * p, size_t n) { free(p); }
#if __GNUC__ && (__cpp_rtti || __cpp_exceptions)
#warning "Consider building with -fno-exceptions -fno-rtti, to avoid dependencies on libgcc_s_sjlj-1.dll and libstdc++-6.dll."
#endif
#endif
//TODO: source ROM chooser
//given a target, from all known source ROMs with same extension, find the most similar
// read 1MB from each; check how many bytes are same and same location as target
// (only counting offsets where both source and target bytes are different from previous, to avoid false positives on long runs of 00)
// if one is >80% same (not counting repeated runs), and all others are <20%, use that
//if no match, multiple matches, or one or more half-matches:
// read first 64K from each of the listed sources, create BPS, and see if one is <20% of size of bps with blank source, while others are >70%
//if still nothing unambiguous:
// fail
//this goes on a separate thread
//TODO: more manual GUI
// has three text fields, for patch / source / target, and 'pick' buttons nearby that open file dialogs
// also Create / Apply / ApplyRun buttons at the bottom
//auto selection (only if target field is blank):
// patch -> source (crc32 database)
// target -> source (algorithm above)
// target -> patch (set extension to bps)
// (source&patch) -> target (source extension, name/path from patch; also happens if triggering patch->source)
//all text fields are scrolled to the end on creation
//no auto selection in simple UI
//applying or creating clears patch/target, but keeps source
//ips creation is allowed, but only by changing filetype in picker, or editing text field; it does not keep last used type
// ips application remains unchanged
// multi-patching is allowed, each filename is wrapped in <>; if filename doesn't start or end with right char, it's a single name
// colon-separated or semicolon-separated are more common, but they're plausible (uncommon, but possible) in filenames
// (Super Mario World 2: Yoshi's Island, or Marios;Gate, for example), and I don't want to fail on that
// multi-creation is not allowed; technically feasible, but super rare, should probably be CLI instead
// if first file isn't found, it tries using the entire field as filename, in case it actually contains semicolon
//TODO: delete
struct mem ReadWholeFile(LPCWSTR filename)
{
return file::read(filename);
}
bool WriteWholeFile(LPCWSTR filename, struct mem data)
{
return filewrite::write(filename, data);
}
bool WriteWholeFileWithHeader(LPCWSTR filename, struct mem header, struct mem data)
{
filewrite* f = filewrite::create(filename);
if (!f) return false;
bool ret = (f->append(header.ptr, 512) && f->append(data.ptr, data.len)); // do not use header.len, that'd prepend the entire file
delete f;
return ret;
}
void FreeFileMemory(struct mem mem)
{
free(mem.ptr);
}
class file_libc : public file {
size_t size;
FILE* io;
public:
static file* create(const char * filename)
{
FILE* f = fopen(filename, "rb");
if (!f) return NULL;
return new file_libc(f);
}
private:
file_libc(FILE* io) : io(io)
{
fseek(io, 0, SEEK_END);
size = ftell(io);
}
public:
size_t len() { return size; }
bool read(uint8_t* target, size_t start, size_t len)
{
fseek(io, start, SEEK_SET);
return (fread(target, 1,len, io) == len);
}
~file_libc() { fclose(io); }
};
file* file::create_libc(const char * filename) { return file_libc::create(filename); }
bool file::exists_libc(const char * filename)
{
FILE* f = fopen(filename, "rb");
if (f) fclose(f);
return (bool)f;
}
class filewrite_libc : public filewrite {
FILE* io;
public:
static filewrite* create(const char * filename)
{
FILE* f = fopen(filename, "wb");
if (!f) return NULL;
return new filewrite_libc(f);
}
private:
filewrite_libc(FILE* io) : io(io) {}
public:
bool append(const uint8_t* data, size_t len)
{
return (fwrite(data, 1,len, io)==len);
}
~filewrite_libc() { fclose(io); }
};
filewrite* filewrite::create_libc(const char * filename) { return filewrite_libc::create(filename); }
class filemap_fallback : public filemap {
public:
size_t m_len;
uint8_t* m_ptr;
static filemap* create(file* f)
{
if (!f) return NULL;
size_t len = f->len();
uint8_t* ptr = (uint8_t*)malloc(len);
if (!ptr) return NULL;
if (!f->read(ptr, 0, len)) { free(ptr); return NULL; }
return new filemap_fallback(f, len, ptr);
}
size_t len() { return m_len; }
const uint8_t * ptr() { return m_ptr; }
//delete the file early, to avoid file sharing issues on Windows (and because keeping it is useless)
// https://github.com/Alcaro/Flips/pull/14
filemap_fallback(file* f, size_t len, uint8_t* ptr) : m_len(len), m_ptr(ptr) { delete f; }
~filemap_fallback() { free(m_ptr); }
};
filemap* filemap::create_fallback(LPCWSTR filename)
{
return filemap_fallback::create(file::create(filename));
}
LPWSTR GetExtension(LPCWSTR fname)
{
LPWSTR ptr1=(LPWSTR)fname;
LPWSTR ptr2;
ptr2=wcsrchr(ptr1, '/'); if (ptr2) ptr1=ptr2;
#ifdef FLIPS_WINDOWS
ptr2=wcsrchr(ptr1, '\\'); if (ptr2) ptr1=ptr2;
#endif
ptr2=wcsrchr(ptr1, '.'); if (ptr2) ptr1=ptr2;
if (*ptr1=='.') return ptr1;
else return wcsrchr(ptr1, '\0');
}
LPWSTR GetBaseName(LPCWSTR fname)
{
LPWSTR ptr1=(LPWSTR)fname;
LPWSTR ptr2;
ptr2=wcsrchr(ptr1, '/'); if (ptr2) ptr1=ptr2+1;
#ifdef FLIPS_WINDOWS
ptr2=wcsrchr(ptr1, '\\'); if (ptr2) ptr1=ptr2+1;
#endif
return ptr1;
}
bool forceKeepHeader=false;
#ifndef FLIPS_CLI
bool guiActive=false;
#endif
struct mem file::read()
{
struct mem out;
out.len = len();
out.ptr = (uint8_t*)malloc(out.len + sizeof(WCHAR));
memset(out.ptr + out.len, 0, sizeof(WCHAR));
if (!read(out.ptr, 0, out.len))
{
free(out.ptr);
struct mem err = {NULL, 0};
return err;
}
return out;
}
struct mem file::read(LPCWSTR filename)
{
struct mem err = {NULL, 0};
file* f = file::create(filename);
if (!f) return err;
struct mem ret = f->read();
delete f;
return ret;
}
bool filewrite::write(LPCWSTR filename, struct mem data)
{
filewrite* f = filewrite::create(filename);
if (!f) return false;
bool ret = f->append(data.ptr, data.len);
delete f;
return ret;
}
class fileheader : public file {
file* child;
public:
fileheader(file* child) : child(child) {}
size_t len() { return child->len()-512; }
bool read(uint8_t* target, size_t start, size_t len) { return child->read(target, start+512, len); }
~fileheader() { delete child; }
};
class fileheadermap : public filemap {
filemap* child;
public:
fileheadermap(filemap* child) : child(child) {}
size_t len() { return child->len()-512; }
//bool read(uint8_t* target, size_t start, size_t len) { return child->read(target, start+512, len); }
const uint8_t* ptr() { return child->ptr()+512; }
~fileheadermap() { delete child; }
};
const struct errorinfo ipserrors[]={
{ el_ok, NULL },//ips_ok
{ el_unlikelythis, "The patch was applied, but is most likely not intended for this ROM." },//ips_notthis
{ el_unlikelythis, "The patch was applied, but did nothing. You most likely already had the output file of this patch." },//ips_thisout
{ el_warning, "The patch was applied, but appears scrambled or malformed." },//ips_suspicious
{ el_broken, "The patch is broken and can't be used." },//ips_invalid
{ el_broken, "The IPS format does not support files larger than 16MB." },//ips_16MB
{ el_warning, "The files are identical! The patch will do nothing." },//ips_identical
};
const struct errorinfo bpserrors[]={
{ el_ok, NULL },//bps_ok,
{ el_notthis, "That's the output file already." },//bps_to_output
{ el_notthis, "This patch is not intended for this ROM." },//bps_not_this
{ el_broken, "This patch is broken and can't be used." },//bps_broken
{ el_broken, "Couldn't read input patch." },//bps_io
{ el_warning, "The files are identical! The patch will do nothing." },//bps_identical
{ el_broken, "These files are too big for this program to handle." },//bps_too_big
{ el_broken, "These files are too big for this program to handle." },//bps_out_of_mem (same message as above, it's accurate for both.)
{ el_broken, "Patch creation was canceled." },//bps_canceled
};
LPCWSTR GetManifestName(LPCWSTR romname)
{
//static WCHAR manifestname[MAX_PATH];
//wcscpy(manifestname, romname);
//LPWSTR manifestext=GetExtension(manifestname);
//if (!manifestext) manifestext=wcschr(manifestname, '\0');
//wcscpy(manifestext, TEXT(".xml"));
//return manifestname;
static WCHAR * manifestname=NULL;
if (manifestname) free(manifestname);
manifestname=(WCHAR*)malloc((wcslen(romname)+1+4)*sizeof(WCHAR));
wcscpy(manifestname, romname);
LPWSTR manifestext=GetExtension(manifestname);
if (manifestext) wcscpy(manifestext, TEXT(".xml"));
return manifestname;
}
enum patchtype IdentifyPatch(file* patch)
{
size_t len = patch->len();
uint8_t data[16];
if (len>16) len=16;
patch->read(data, 0, len);
if (len>=5 && !memcmp(data, "PATCH", 5)) return ty_ips;
if (len>=4 && !memcmp(data, "BPS1", 4)) return ty_bps;
if (len>=4 && !memcmp(data, "UPS1", 4)) return ty_ups;
return ty_null;
}
//this is the most inefficient possible implementation, but since it only needs about 10 entries,
//performance is irrelevant
void config::init_raw(LPWSTR contents)
{
LPCWSTR header = TEXT("[Flips]\n");
if (wcsncmp(contents, header, wcslen(header)) != 0) return;
contents += wcslen(header);
//I need to somehow ensure that stepping backwards across whitespace doesn't go before the original string.
//This can be done with while (iswspace(*contents)) contents++;, but demanding the header above works just as well.
while (true)
{
LPWSTR key;
LPWSTR keyend;
LPWSTR val;
LPWSTR valend;
LPWSTR nextline = wcschr(contents, '\n');
if (nextline != NULL) valend = nextline;
else valend = wcschr(contents, '\0');
//do not move inside the conditional, it screws up the strchr
while (iswspace(valend[-1])) valend--;
*valend = '\0';
LPWSTR sep = wcschr(contents, '=');
if (sep != NULL)
{
key = contents;
keyend = sep;
val = sep+1;
while (iswspace(key[0])) key++;
while (iswspace(keyend[-1])) keyend--;
*keyend = '\0';
while (iswspace(val[0])) val++;
if (valend>val && keyend>key && iswalnum(key[0]))
{
set(key, val);
}
}
if (!nextline) break;
contents = nextline+1;
while (contents && iswspace(*contents)) contents++;
}
for (size_t i=0;i<numentries;i++)
{
AddConfigToRomList(names[i], values[i]);
}
}
void config::init_file(LPCWSTR filename)
{
struct mem data = file::read(filename);
if (data.len > 0 && data.len%sizeof(WCHAR) == 0)
{
this->init_raw((LPWSTR)(data.ptr));
}
free(data.ptr);
this->filename = wcsdup(filename);
}
void config::sort()
{
//bubble sort, and called for every insertion... super fun
//but it's easy, it works, and it's fast for numentries=10 and there's no reason to go much higher than that
for (size_t i=0;i<numentries;i++)
for (size_t j=i+1;j<numentries;j++)
{
if (wcscmp(names[i], names[j]) > 0)
{
LPWSTR tmp = names[i];
names[i] = names[j];
names[j] = tmp;
tmp = values[i];
values[i] = values[j];
values[j] = tmp;
}
}
}
void config::set(LPCWSTR name, LPCWSTR value)
{
for (size_t i=0;i<this->numentries;i++)
{
if (!wcscmp(name, this->names[i]))
{
if (value == this->values[i])
return;
free(this->values[i]);
if (value!=NULL)
{
this->values[i] = wcsdup(value);
}
else
{
free(this->names[i]);
this->names[i] = this->names[this->numentries-1];
this->values[i] = this->values[this->numentries-1];
this->numentries--;
}
return;
}
}
this->numentries++;
this->names = (LPWSTR*)realloc(this->names, sizeof(LPWSTR)*this->numentries);
this->values = (LPWSTR*)realloc(this->values, sizeof(LPWSTR)*this->numentries);
this->names[this->numentries-1] = wcsdup(name);
this->values[this->numentries-1] = wcsdup(value);
sort();
}
LPCWSTR config::get(LPCWSTR name, LPCWSTR def)
{
for (size_t i=0;i<this->numentries;i++)
{
if (!wcscmp(name, this->names[i]))
{
if (this->values[i]) return this->values[i];
else return def;
}
}
return def;
}
LPWSTR config::flatten()
{
LPCWSTR header = TEXT("[Flips]\n#Changing this file may void your warranty. Do not report any bugs if you do.\n");
size_t len = wcslen(header);
for (size_t i=0;i<this->numentries;i++)
{
if (this->values[i]!=NULL)
{
len += wcslen(this->names[i]) + 1 + wcslen(this->values[i]) + 1;
}
}
LPWSTR ret = (LPWSTR)malloc((len+1)*sizeof(WCHAR));
LPWSTR end = ret + len+1;
LPWSTR at = ret;
at += swprintf(at, end-at, TEXT("%s"), header);
for (size_t i=0;i<this->numentries;i++)
{
if (this->values[i]!=NULL)
{
at += swprintf(at, end-at, TEXT("%s=%s\n"), this->names[i], this->values[i]);
}
}
return ret;
}
config::~config()
{
if (this->filename)
{
LPWSTR data = this->flatten();
//puts(data);
struct mem m = { (uint8_t*)data, wcslen(data)*sizeof(WCHAR) };
filewrite::write(this->filename, m);
free(data);
free(this->filename);
}
for (size_t i=0;i<this->numentries;i++)
{
//printf("#(%s)(%s)\n",this->names[i],this->values[i]);
free(this->names[i]);
free(this->values[i]);
}
free(this->names);
free(this->values);
}
config cfg;
static LPWSTR EmuGetKey(LPCWSTR filename)
{
static WCHAR ret[64];
swprintf(ret, 64, TEXT("emu%s"), GetExtension(filename));
return ret;
}
LPCWSTR GetEmuFor(LPCWSTR filename)
{
return cfg.get(EmuGetKey(filename));
}
void SetEmuFor(LPCWSTR filename, LPCWSTR emu)
{
cfg.set(EmuGetKey(filename), emu);
}
enum {
ch_crc32,
ch_last
};
static LPCWSTR checkmap_typenames[] = { TEXT("rom.crc32.") };
// sizeof rather than strlen to ensure compile-time evaluation; -1 for NUL
static const int checkmap_typenames_maxlen = sizeof("rom.crc32.")-1;
struct checkmap {
uint8_t* sum;
LPWSTR name;
};
static struct checkmap * checkmap[ch_last]={NULL};
static uint32_t checkmap_len[ch_last]={0};
static const uint8_t checkmap_sum_size[]={ 4 };
static const uint8_t checkmap_sum_size_max = 4;
static const int CfgSumNameMaxLen = checkmap_typenames_maxlen + checkmap_sum_size_max*2 + 1;
static void CfgSumName(WCHAR* out, int type, const void* sum)
{
const uint8_t* sum8 = (uint8_t*)sum;
wcscpy(out, checkmap_typenames[type]);
WCHAR* bufend = out + CfgSumNameMaxLen;
WCHAR* end = out + wcslen(checkmap_typenames[type]);
for (int i=0;i<checkmap_sum_size[type];i++)
swprintf(end+i*2, bufend-(end+i*2), TEXT("%.2X"), sum8[i]);
}
static bool CfgSumParseName(int* type, void* sum, LPCWSTR in)
{
if (wcsncmp(in, TEXT("rom."), strlen("rom.")) != 0)
return false;
uint8_t* out = (uint8_t*)sum;
for (int t=0;t<ch_last;t++)
{
if (!wcsncmp(in, checkmap_typenames[t], wcslen(checkmap_typenames[t])))
{
*type = t;
LPCWSTR hex = in + wcslen(checkmap_typenames[t]);
if (wcslen(hex) != checkmap_sum_size[t]*2) return false;
WCHAR tmp[3];
unsigned tmpout = -1;
tmp[2] = '\0';
for (int i=0;i<checkmap_sum_size[t];i++)
{
tmp[0] = hex[i*2+0]; // let non-hex yield garbage, messing with config voids your warranty anyways
tmp[1] = hex[i*2+1];
swscanf(tmp, TEXT("%x"), &tmpout);
out[i] = tmpout; // not %hhx because XP doesn't trust c99
}
return true;
}
}
return false;
}
static LPCWSTR FindRomForSum(int type, void* sum)
{
for (unsigned int i=0;i<checkmap_len[type];i++)
{
if (!memcmp(checkmap[type][i].sum, sum, checkmap_sum_size[type]))
{
return checkmap[type][i].name;
}
}
return NULL;
}
static void AddRomForSum(int type, void* sum, LPCWSTR filename)
{
if (FindRomForSum(type, sum)) return;
int ch_pos=(checkmap_len[type]++);
if (!(ch_pos&(ch_pos+1)))
{
checkmap[type]=(struct checkmap*)realloc(checkmap[type], sizeof(struct checkmap)*((ch_pos+1)*2));
}
struct checkmap* item=&checkmap[type][ch_pos];
item->sum=(uint8_t*)malloc(checkmap_sum_size[type]);
memcpy(item->sum, sum, checkmap_sum_size[type]);
item->name=wcsdup(filename);
WCHAR cfgname[CfgSumNameMaxLen];
CfgSumName(cfgname, type, sum);
cfg.set(cfgname, filename);
}
struct mem GetRomList()
{
struct mem out={NULL, 0};
for (unsigned int type=0;type<ch_last;type++)
{
out.len+=sizeof(uint32_t);
for (uint32_t i=0;i<checkmap_len[type];i++)
{
out.len+=sizeof(uint8_t);
out.len+=sizeof(uint16_t);
out.len+=checkmap_sum_size[type];
out.len+=sizeof(WCHAR)*wcslen(checkmap[type][i].name);
}
}
out.ptr=(uint8_t*)malloc(out.len);
uint8_t* data=out.ptr;
for (unsigned int type=0;type<ch_last;type++)
{
#define write(ptr, size) \
memcpy(data, ptr, size); \
data+=size
#define write_obj(obj) write(&obj, sizeof(obj))
write_obj(checkmap_len[type]);
for (uint32_t i=0;i<checkmap_len[type];i++)
{
write_obj(checkmap_sum_size[type]);
uint16_t len=sizeof(WCHAR)*wcslen(checkmap[type][i].name);
write_obj(len);
write(checkmap[type][i].sum, checkmap_sum_size[type]);
write(checkmap[type][i].name, len);
}
#undef write
#undef write_obj
}
return out;
}
void FreeRomList(struct mem data)
{
free(data.ptr);
}
void SetRomList(struct mem data)
{
for (int type=0;type<ch_last;type++)
{
#define read(target, bytes) \
if (bytes > data.len) return; \
memcpy(target, data.ptr, bytes); \
data.ptr += bytes; \
data.len -= bytes
#define read_discard(bytes) \
if (bytes > data.len) return; \
data.ptr += bytes; \
data.len -= bytes
uint32_t count;
read(&count, sizeof(count));
checkmap[type]=(struct checkmap*)malloc(sizeof(struct checkmap)*count*2);//overallocate so I won't need to round the count
while (count--)
{
uint8_t hashlen;
read(&hashlen, sizeof(hashlen));
uint16_t strlen;
read(&strlen, sizeof(strlen));
if (hashlen==checkmap_sum_size[type])
{
if (data.len < hashlen+strlen) return;
struct checkmap* item=&checkmap[type][checkmap_len[type]++];
item->sum=(uint8_t*)malloc(checkmap_sum_size[type]);
read(item->sum, hashlen);
item->name=(WCHAR*)malloc(strlen+sizeof(WCHAR));
read(item->name, strlen);
memset((uint8_t*)item->name + strlen, 0, sizeof(WCHAR));
}
else
{
read_discard(hashlen);
read_discard(strlen);
}
}
#undef read
}
}
LPCWSTR FindRomForPatch(file* patch, bool * possibleToFind)
{
if (possibleToFind) *possibleToFind=false;
enum patchtype patchtype=IdentifyPatch(patch);
if (patchtype==ty_bps)
{
struct bpsinfo info = bps_get_info(patch, false);
if (info.error) return NULL;
if (possibleToFind) *possibleToFind=true;
return FindRomForSum(ch_crc32, &info.crc_in);
}
//UPS has checksums too, but screw UPS. Nobody cares.
return NULL;
}
void AddToRomList(file* patch, LPCWSTR path)
{
enum patchtype patchtype=IdentifyPatch(patch);
if (patchtype==ty_bps)
{
struct bpsinfo info = bps_get_info(patch, false);
if (info.error) return;
AddRomForSum(ch_crc32, &info.crc_in, path);
}
}
void AddConfigToRomList(LPCWSTR key, LPCWSTR value)
{
int type;
uint8_t sum[checkmap_sum_size_max];
if (CfgSumParseName(&type, sum, key))
AddRomForSum(type, sum, value);
}
void DeleteRomFromList(LPCWSTR path)
{
for (unsigned int type=0;type<ch_last;type++)
{
for (unsigned int i=0;i<checkmap_len[type];i++)
{
if (!wcscmp(checkmap[type][i].name, path))
{
free(checkmap[type][i].name);
free(checkmap[type][i].sum);
memmove(&checkmap[type][i], &checkmap[type][i+1], sizeof(struct checkmap)*(checkmap_len[type]-1 - i));
i--;
checkmap_len[type]--;
}
}
}
}
static struct errorinfo error(errorlevel level, const char * text)
{
struct errorinfo errinf = { level, text };
return errinf;
}
struct errorinfo ApplyPatchMem2(file* patch, struct mem inrom, bool verifyinput, bool removeheader,
LPCWSTR outromname, struct manifestinfo * manifestinfo)
{
struct mem patchmem = patch->read(); // There's no real reason to remove this, no patcher knows how to handle these file objects.
enum patchtype patchtype=IdentifyPatch(patch);
struct errorinfo errinf;
removeheader=(removeheader && patchtype==ty_bps);
if (removeheader)
{
inrom.ptr+=512;
inrom.len-=512;
}
struct mem outrom={NULL,0};
struct mem manifest={NULL,0};
errinf=error(el_broken, "Unknown patch format.");
if (patchtype==ty_bps)
{
errinf=bpserrors[bps_apply(patchmem, inrom, &outrom, &manifest, !verifyinput)];
if (errinf.level==el_notthis && !verifyinput && outrom.ptr)
errinf = error(el_warning, "This patch is not intended for this ROM (output created anyways)");
if (errinf.level==el_notthis)
{
bpsinfo inf = bps_get_info(patch, false);
static char errtextbuf[2][256]; // ugly trick to get the nested invocation for the header remover to not screw up the error
static int errtextid=0; // makes it impossible to save the error strings, but Flips doesn't do that anyways
char* errtext=errtextbuf[errtextid];
if (++errtextid == 2) errtextid=0;
if (inf.size_in != inrom.len)
{
//http://msdn.microsoft.com/en-us/library/vstudio/tcxf1dw6.aspx says %zX is not supported
//this is true up to and including Windows Vista; 7 adds support for it
//I could define it to "I", but my GCC does not acknowledge its legitimacy and throws bogus warnings
//nor does my GCC accept any supported alternative, so let's just nuke the entire warning.
//it's a poor solution, but it's the best I can find
#ifdef _WIN32
# ifdef _WIN64
# ifdef __GNUC__
# pragma GCC diagnostic ignored "-Wformat"
# endif
# define z "I"
# else
# define z ""
# endif
#else
# define z "z"
#endif
snprintf(errtext, 256, "This patch is not intended for this ROM. Expected file size %" z "u, got %" z "u.", inf.size_in, inrom.len);
errinf.description=errtext;
}
else
{
uint32_t crc = crc32(inrom.ptr, inrom.len);
if (inf.crc_in != crc)
{
snprintf(errtext, 256, "This patch is not intended for this ROM. Expected checksum %.8X, got %.8X.", inf.crc_in, crc);
errinf.description=errtext;
}
}
}
}
if (patchtype==ty_ips) errinf=ipserrors[ips_apply(patchmem, inrom, &outrom)];
if (patchtype==ty_ups) errinf=bpserrors[ups_apply(patchmem, inrom, &outrom)];
if (errinf.level==el_ok) errinf.description="The patch was applied successfully!";
struct manifestinfo defmanifestinfo={true,false,NULL};
if (!manifestinfo) manifestinfo=&defmanifestinfo;
if (manifestinfo->use)
{
if (manifest.ptr)
{
LPCWSTR manifestname;
if (manifestinfo->name) manifestname=manifestinfo->name;
else manifestname=GetManifestName(outromname);
if (!WriteWholeFile(manifestname, manifest) && manifestinfo->required)
{
if (errinf.level==el_ok) errinf=error(el_warning, "The patch was applied, but the manifest could not be created.");
}
}
else if (manifestinfo->required && errinf.level==el_ok)
{
errinf=error(el_warning, "The patch was applied, but there was no manifest present.");
}
}
if (removeheader)
{
inrom.ptr-=512;
inrom.len+=512;
if (errinf.level<el_notthis)
{
if (!WriteWholeFileWithHeader(outromname, inrom, outrom))
{
errinf=error(el_broken, "Couldn't write ROM");
}
}
}
else if (errinf.level<el_notthis)
{
if (!WriteWholeFile(outromname, outrom)) errinf=error(el_broken, "Couldn't write ROM");
}
free(outrom.ptr);
free(patchmem.ptr);
if (errinf.level==el_notthis && removeheader)
{
struct errorinfo errinf2=ApplyPatchMem2(patch, inrom, verifyinput, false, outromname, manifestinfo);
if (errinf2.level < el_notthis)
{
if (errinf2.level==el_ok)
{
return error(el_warning, "The patch was applied, but it was created from a headered ROM, which may not work for everyone.");
}
else return errinf2;
}
}
return errinf;
}
bool shouldRemoveHeader(LPCWSTR romname, size_t romlen)
{
LPWSTR romext=GetExtension(romname);
return ((romlen&0x7FFF)==512 &&
(!wcsicmp(romext, TEXT(".smc")) || !wcsicmp(romext, TEXT(".sfc"))) &&
!forceKeepHeader);
}
struct errorinfo ApplyPatchMem(file* patch, LPCWSTR inromname, bool verifyinput,
LPCWSTR outromname, struct manifestinfo * manifestinfo, bool update_rom_list)
{
filemap* inrom = filemap::create(inromname);
if (!inrom)
{
if (update_rom_list) DeleteRomFromList(inromname);
return error(el_broken, "Couldn't read ROM");
}
struct errorinfo errinf = ApplyPatchMem2(patch, inrom->get(), verifyinput,
shouldRemoveHeader(inromname, inrom->len()), outromname, manifestinfo);
if (update_rom_list && errinf.level==el_ok) AddToRomList(patch, inromname);
delete inrom;
return errinf;
}
struct errorinfo ApplyPatch(LPCWSTR patchname, LPCWSTR inromname, bool verifyinput,
LPCWSTR outromname, struct manifestinfo * manifestinfo, bool update_rom_list)
{
file* patch = file::create(patchname);
if (!patch)
{
return error(el_broken, "Couldn't read input patch");
}
struct errorinfo errinf=ApplyPatchMem(patch, inromname, verifyinput, outromname, manifestinfo, update_rom_list);
delete patch;
return errinf;
}
char bpsdProgStr[24];
int bpsdLastPromille=-1;
bool bpsdeltaGetProgress(size_t done, size_t total)
{
if (total<1000) total=1000;//avoid div by zero
int promille=done/(total/1000);//don't set this to done*1000/total, it'd just give overflows on huge stuff. 100% is handled later
if (promille==bpsdLastPromille) return false;
bpsdLastPromille=promille;
if (promille>=1000) return false;
strcpy(bpsdProgStr, "Please wait... ");
bpsdProgStr[15]='0'+promille/100;
int digit1=((promille<100)?15:16);
bpsdProgStr[digit1+0]='0'+promille/10%10;
bpsdProgStr[digit1+1]='.';
bpsdProgStr[digit1+2]='0'+promille%10;
bpsdProgStr[digit1+3]='%';
bpsdProgStr[digit1+4]='\0';
return true;
}
bool bpsdeltaProgressCLI(void* userdata, size_t done, size_t total)
{
if (!bpsdeltaGetProgress(done, total)) return true;
fputs(bpsdProgStr, stdout);
putchar('\r');
fflush(stdout);
return true;
}
struct errorinfo CreatePatchToMem(LPCWSTR inromname, LPCWSTR outromname, enum patchtype patchtype,
struct manifestinfo * manifestinfo, struct mem * patchmem)
{
bool usemmap = (patchtype!=ty_bps && patchtype!=ty_bps_moremem);
//pick roms
filemap* romsmap[2]={NULL, NULL};
file* roms[2]={NULL, NULL};
size_t lens[2];
for (int i=0;i<2;i++)
{
LPCWSTR romname=((i==0)?inromname:outromname);
if (usemmap)
{
romsmap[i] = filemap::create(romname);
if (!romsmap[i])
{
if (i==1) delete romsmap[0];
return error(el_broken, "Couldn't read this ROM.");
}
if (shouldRemoveHeader(romname, romsmap[i]->len()) && (patchtype==ty_bps || patchtype==ty_bps_linear || patchtype==ty_bps_moremem))
{
romsmap[i] = new fileheadermap(romsmap[i]);
}
lens[i] = romsmap[i]->len();
}
else
{
roms[i] = file::create(romname);