Fix detection of Blade Symphony on Windows x64 (#67)

* Fix detection of Blade Symphony on Windows x64

Port finding the module base address on x64 builds from SourceMod.
Fix a bunch of truncation warnings on x64 while at it too.

* Fix mm_TrimComments stripping last char before comment

```c
char test[] = "hi this is a a test!// comment";
mm_TrimComments(test);
puts(test); // prints "hi this is a test" without the !
```

* Fix unsigned comparison warnings

* Fix truncation warnings in SourceHook::String

* Fix unsigned comparison warnings

clang does have some nice analysis.

core/ISmmAPI.h

@@ -206,7 +206,7 @@ namespace SourceMM
 		 * @return				The newly incremented iface version number.
 		 * @deprecated			Use InterfaceSearch() or VInterfaceMatch instead.
 		 */
-		virtual int FormatIface(char iface[], unsigned int maxlength) =0;
+		virtual int FormatIface(char iface[], size_t maxlength) =0;
 
 		/**
 		 * @brief Searches for an interface, eliminating the need to loop 

core/metamod.cpp

@@ -792,13 +792,13 @@ void MetamodSource::GetShVersions(int &shvers, int &shimpl)
 	shimpl = SH_IMPL_VERSION;
 }
 
-int MetamodSource::FormatIface(char iface[], unsigned int maxlength)
+int MetamodSource::FormatIface(char iface[], size_t maxlength)
 {
-	int length = (int)strlen(iface);
-	int i;
+	size_t length = strlen(iface);
+	size_t i;
 	int num = 0;
 
-	for (i = length - 1; i >= 0; i--)
+	for (i = length - 1; i + 1 > 0; i--)
 	{
 		if (!isdigit(iface[i]))
 		{
@@ -810,7 +810,7 @@ int MetamodSource::FormatIface(char iface[], unsigned int maxlength)
 		}
 	}
 
-	if ( (num && ((int)maxlength <= length)) || (!num && ((int)maxlength <= length + 3)) )
+	if ( (num && (maxlength <= length)) || (!num && (maxlength <= length + 3)) )
 	{
 		return -1;
 	}

core/metamod.h

@@ -72,7 +72,7 @@ public:
 	void GetShVersions(int &shvers, int &shimpl);
 	void AddListener(ISmmPlugin *plugin, IMetamodListener *pListener);
 	void *MetaFactory(const char *iface, int *ret, PluginId *id);
-	int FormatIface(char iface[], unsigned int maxlength);
+	int FormatIface(char iface[], size_t maxlength);
 	void *InterfaceSearch(CreateInterfaceFn fn, const char *iface, int max, int *ret);
 	const char *GetBaseDir();
 	size_t PathFormat(char *buffer, size_t len, const char *fmt, ...);

core/metamod_console.cpp

@@ -184,7 +184,7 @@ bool Command_Meta(IMetamodSourceCommandInfo *info)
 			const char *plname;
 			PluginIter i;
 			char buffer[256];
-			int len;
+			size_t len;
 			int plnum = g_PluginMngr.GetPluginCount();
 
 			if (!plnum)
@@ -688,7 +688,7 @@ bool Command_ClientMeta(edict_t *client, IMetamodSourceCommandInfo *info)
 				const char *plname;
 				PluginIter i;
 				char buffer[256];
-				int len = 0;
+				size_t len = 0;
 				int plnum = 0;
 
 				for (i = g_PluginMngr._begin(); i != g_PluginMngr._end(); i++, len=0)

core/metamod_oslink.cpp

@@ -81,7 +81,7 @@ bool GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength)
 	if (mem.AllocationBase == NULL)
 		return false;
 	HMODULE dll = (HMODULE)mem.AllocationBase;
-	GetModuleFileName(dll, (LPTSTR)buffer, maxlength);
+	GetModuleFileName(dll, (LPTSTR)buffer, static_cast<DWORD>(maxlength));
 #elif defined __linux__ || defined __APPLE__
 	Dl_info info;
 	if (!dladdr(pAddr, &info))

core/metamod_util.cpp

@@ -38,10 +38,10 @@
 
 const char *UTIL_GetExtension(const char *file)
 {
-	int len = strlen(file);
-	int i = 0;
+	size_t len = strlen(file);
+	size_t i = 0;
 
-	for (i = len - 1; i >= 0; i--)
+	for (i = len - 1; i + 1 > 0; i--)
 	{
 		if (file[i] == '/' || file[i] == '\\')
 		{

core/sourcehook/sh_string.h

@@ -134,14 +134,14 @@ public:
 			return 0;
 	}
 
-	int find(const char c, int index = 0) const
+	size_t find(const char c, size_t index = 0) const
 	{
-		int len = static_cast<int>(size());
+		size_t len = size();
 		if (len < 1)
 			return npos;
-		if (index >= len || index < 0)
+		if (index >= len)
 			return npos;
-		int i = 0;
+		size_t i = 0;
 		for (i=index; i<len; i++)
 		{
 			if (v[i] == c)
@@ -153,20 +153,20 @@ public:
 		return npos;
 	}
 
-	int find_last_of(const char c, int index = npos) const
+	size_t find_last_of(const char c, size_t index = npos) const
 	{
-		int len = static_cast<int>(size());
+		size_t len = size();
 		if (len < 1)
 			return npos;
-		if (index >= len || index < npos)
+		if (index >= len)
 			return npos;
-		int i;
+		size_t i;
 		if (index == npos)
 			i = len - 1;
 		else
 			i = index;
 
-		for (; i>=0; i--)
+		for (; i+1>0; i--)
 		{
 			if (v[i] == c)
 			{
@@ -194,8 +194,8 @@ public:
 		if (!v)
 			return;
 
-		unsigned int i = 0;
-		unsigned int j = 0;
+		size_t i = 0;
+		size_t j = 0;
 		size_t len = strlen(v);
 
 		if (len == 1)
@@ -213,7 +213,7 @@ public:
 		{
 			for (i=0; i<len; i++)
 			{
-				if (!is_space(v[i]) || (is_space(v[i]) && ((unsigned char)i==len-1)))
+				if (!is_space(v[i]) || (is_space(v[i]) && (i==len-1)))
 				{
 					erase(0, i);
 					break;
@@ -252,11 +252,11 @@ public:
 		}
 	}
 
-	void erase(unsigned int start, int num = npos)
+	void erase(size_t start, size_t num = npos)
 	{
 		if (!v)
 			return;
-		unsigned int i = 0;
+		size_t i = 0;
 		size_t len = size();
 		//check for bounds
 		if (num == npos || start+num > len-start)
@@ -287,7 +287,7 @@ public:
 		v[len] = 0;
 	}
 
-	String substr(unsigned int index, int num = npos) const
+	String substr(size_t index, size_t num = npos) const
 	{
 		if (!v)
 		{
@@ -309,8 +309,8 @@ public:
 			num = len - index;
 		}
 
-		unsigned int i = 0;
-		unsigned int nslen = num + 2;
+		size_t i = 0;
+		size_t nslen = num + 2;
 
 		ns.Grow(nslen);
 
@@ -324,7 +324,7 @@ public:
 	{
 		if (!v)
 			return;
-		unsigned int i = 0;
+		size_t i = 0;
 		size_t len = strlen(v);
 		for (i=0; i<len; i++)
 		{
@@ -346,9 +346,9 @@ public:
 
 	}
 
-	char operator [] (unsigned int index) const
+	char operator [] (size_t index) const
 	{
-		if (index > size() || !v)
+		if (index >= size() || !v)
 		{
 			return -1;
 		} else {
@@ -356,17 +356,17 @@ public:
 		}
 	}
 
-	int at(int a) const
+	int at(size_t a) const
 	{
-		if (a < 0 || a >= (int)size() || !v)
+		if (a >= size() || !v)
 			return -1;
 
 		return v[a];
 	}
 
-	bool at(int at, char c)
+	bool at(size_t at, char c)
 	{
-		if (at < 0 || at >= (int)size() || !v)
+		if (at >= size() || !v)
 			return false;
 
 		v[at] = c;
@@ -375,7 +375,7 @@ public:
 	}
 
 private:
-	void Grow(unsigned int d, bool copy=true)
+	void Grow(size_t d, bool copy=true)
 	{
 		if (d <= a_size)
 			return;
@@ -385,15 +385,15 @@ private:
 		if (v)
 			delete [] v;
 		else
-			strcpy(n, "");			
+			strcpy(n, "");
 		v = n;
 		a_size = d + 1;
 	}
 
 	char *v;
-	unsigned int a_size;
+	size_t a_size;
 public:
-	static const int npos = -1;
+	static const size_t npos = static_cast<size_t>(-1);
 };
 
 };	//NAMESPACE

core/sourcehook/test/testvphooks.cpp

@@ -2,6 +2,7 @@
 #include "sourcehook.h"
 #include "sourcehook_test.h"
 #include "testevents.h"
+#include <ctime>
 
 // TEST VP HOOKS
 // Test vfnptr-wide hooks

loader/utility.cpp

@@ -54,7 +54,7 @@ mm_GetPlatformError(char *buffer, size_t maxlength)
 		dw,
 		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
 		(LPSTR)buffer,
-		maxlength,
+		static_cast<DWORD>(maxlength),
 		NULL);
 }
 #endif
@@ -148,33 +148,24 @@ mm_TrimRight(char *buffer)
 void
 mm_TrimComments(char *buffer)
 {
-	int num_sc = 0;
-	size_t len = strlen(buffer);
 	if (buffer)
 	{
-		for (int i = len - 1; i >= 0; i--)
+		int num_sc = 0;
+		size_t len = strlen(buffer);
+		for (size_t i = 0; i < len; i++)
 		{
 			if (buffer[i] == '/')
 			{
-				if (++num_sc >= 2 && i==0)
+				if (++num_sc >= 2)
 				{
-					buffer[i] = '\0';
+					buffer[i-1] = '\0';
 					return;
 				}
 			}
 			else
 			{
-				if (num_sc >= 2)
-				{
-					buffer[i] = '\0';
-					return;
-				}
 				num_sc = 0;
 			}
-			/* size_t won't go below 0, manually break out */
-			if (i == 0)
-				break;
-			
 		}
 	}
 }
@@ -371,7 +362,7 @@ mm_GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength)
 	if (mem.AllocationBase == NULL)
 		return false;
 	HMODULE dll = (HMODULE)mem.AllocationBase;
-	GetModuleFileName(dll, (LPTSTR)buffer, maxlength);
+	GetModuleFileName(dll, (LPTSTR)buffer, static_cast<DWORD>(maxlength));
 #elif defined __linux__ || defined __APPLE__
 	Dl_info info;
 	if (!dladdr(pAddr, &info))
@@ -402,6 +393,14 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 
 #ifdef _WIN32
 
+#ifdef _M_X64
+	const WORD PE_FILE_MACHINE = IMAGE_FILE_MACHINE_AMD64;
+	const WORD PE_NT_OPTIONAL_HDR_MAGIC = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+#else
+	const WORD PE_FILE_MACHINE = IMAGE_FILE_MACHINE_I386;
+	const WORD PE_NT_OPTIONAL_HDR_MAGIC = IMAGE_NT_OPTIONAL_HDR32_MAGIC;
+#endif
+
 	MEMORY_BASIC_INFORMATION info;
 	IMAGE_DOS_HEADER *dos;
 	IMAGE_NT_HEADERS *pe;
@@ -422,15 +421,13 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 	opt = &pe->OptionalHeader;
 
 	/* Check PE magic and signature */
-	if (dos->e_magic != IMAGE_DOS_SIGNATURE || pe->Signature != IMAGE_NT_SIGNATURE || opt->Magic != IMAGE_NT_OPTIONAL_HDR32_MAGIC)
+	if (dos->e_magic != IMAGE_DOS_SIGNATURE || pe->Signature != IMAGE_NT_SIGNATURE || opt->Magic != PE_NT_OPTIONAL_HDR_MAGIC)
 	{
 		return false;
 	}
 
-	/* Check architecture, which is 32-bit/x86 right now
-	* Should change this for 64-bit if Valve gets their act together
-	*/
-	if (file->Machine != IMAGE_FILE_MACHINE_I386)
+	/* Check architecture	*/
+	if (file->Machine != PE_FILE_MACHINE)
 	{
 		return false;
 	}
@@ -446,9 +443,21 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 
 #elif defined __linux__
 
+#ifdef __x86_64__
+	typedef Elf64_Ehdr ElfHeader;
+	typedef Elf64_Phdr ElfPHeader;
+	const unsigned char ELF_CLASS = ELFCLASS64;
+	const uint16_t ELF_MACHINE = EM_X86_64;
+#else
+	typedef Elf32_Ehdr ElfHeader;
+	typedef Elf32_Phdr ElfPHeader;
+	const unsigned char ELF_CLASS = ELFCLASS32;
+	const uint16_t ELF_MACHINE = EM_386;
+#endif
+
 	Dl_info info;
-	Elf32_Ehdr *file;
-	Elf32_Phdr *phdr;
+	ElfHeader *file;
+	ElfPHeader *phdr;
 	uint16_t phdrCount;
 
 	if (!dladdr(libPtr, &info))
@@ -463,7 +472,7 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 
 	/* This is for our insane sanity checks :o */
 	baseAddr = reinterpret_cast<uintptr_t>(info.dli_fbase);
-	file = reinterpret_cast<Elf32_Ehdr *>(baseAddr);
+	file = reinterpret_cast<ElfHeader *>(baseAddr);
 
 	/* Check ELF magic */
 	if (memcmp(ELFMAG, file->e_ident, SELFMAG) != 0)
@@ -477,10 +486,8 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 		return false;
 	}
 
-	/* Check ELF architecture, which is 32-bit/x86 right now
-	* Should change this for 64-bit if Valve gets their act together
-	*/
-	if (file->e_ident[EI_CLASS] != ELFCLASS32 || file->e_machine != EM_386 || file->e_ident[EI_DATA] != ELFDATA2LSB)
+	/* Check ELF architecture	*/
+	if (file->e_ident[EI_CLASS] != ELF_CLASS || file->e_machine != ELF_MACHINE || file->e_ident[EI_DATA] != ELFDATA2LSB)
 	{
 		return false;
 	}
@@ -492,11 +499,11 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 	}
 
 	phdrCount = file->e_phnum;
-	phdr = reinterpret_cast<Elf32_Phdr *>(baseAddr + file->e_phoff);
+	phdr = reinterpret_cast<ElfPHeader *>(baseAddr + file->e_phoff);
 
 	for (uint16_t i = 0; i < phdrCount; i++)
 	{
-		Elf32_Phdr &hdr = phdr[i];
+		ElfPHeader &hdr = phdr[i];
 
 		/* We only really care about the segment with executable code */
 		if (hdr.p_type == PT_LOAD && hdr.p_flags == (PF_X|PF_R))
@@ -515,9 +522,25 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 
 #elif defined __APPLE__
 
+#ifdef __x86_64__
+	typedef struct mach_header_64 MachHeader;
+	typedef struct segment_command_64 MachSegment;
+	const uint32_t MACH_MAGIC = MH_MAGIC_64;
+	const uint32_t MACH_LOADCMD_SEGMENT = LC_SEGMENT_64;
+	const cpu_type_t MACH_CPU_TYPE = CPU_TYPE_X86_64;
+	const cpu_subtype_t MACH_CPU_SUBTYPE = CPU_SUBTYPE_X86_64_ALL;
+#else
+	typedef struct mach_header MachHeader;
+	typedef struct segment_command MachSegment;
+	const uint32_t MACH_MAGIC = MH_MAGIC;
+	const uint32_t MACH_LOADCMD_SEGMENT = LC_SEGMENT;
+	const cpu_type_t MACH_CPU_TYPE = CPU_TYPE_I386;
+	const cpu_subtype_t MACH_CPU_SUBTYPE = CPU_SUBTYPE_I386_ALL;
+#endif
+
 	Dl_info info;
-	struct mach_header *file;
-	struct segment_command *seg;
+	MachHeader *file;
+	MachSegment *seg;
 	uint32_t cmd_count;
 
 	if (!dladdr(libPtr, &info))
@@ -532,16 +555,16 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 
 	/* This is for our insane sanity checks :o */
 	baseAddr = (uintptr_t)info.dli_fbase;
-	file = (struct mach_header *)baseAddr;
+	file = (MachHeader *)baseAddr;
 
 	/* Check Mach-O magic */
-	if (file->magic != MH_MAGIC)
+	if (file->magic != MACH_MAGIC)
 	{
 		return false;
 	}
 
-	/* Check architecture (32-bit/x86) */
-	if (file->cputype != CPU_TYPE_I386 || file->cpusubtype != CPU_SUBTYPE_I386_ALL)
+	/* Check architecture */
+	if (file->cputype != MACH_CPU_TYPE || file->cpusubtype != MACH_CPU_SUBTYPE)
 	{
 		return false;
 	}
@@ -553,17 +576,17 @@ mm_GetLibraryInfo(const void *libPtr, DynLibInfo &lib)
 	}
 
 	cmd_count = file->ncmds;
-	seg = (struct segment_command *)(baseAddr + sizeof(struct mach_header));
+	seg = (MachSegment *)(baseAddr + sizeof(MachHeader));
 
 	/* Add up memory sizes of mapped segments */
 	for (uint32_t i = 0; i < cmd_count; i++)
 	{
-		if (seg->cmd == LC_SEGMENT)
+		if (seg->cmd == MACH_LOADCMD_SEGMENT)
 		{
 			lib.memorySize += seg->vmsize;
 		}
 
-		seg = (struct segment_command *)((uintptr_t)seg + seg->cmdsize);
+		seg = (MachSegment  *)((uintptr_t)seg + seg->cmdsize);
 	}
 
 #endif