- added base64 encode/decode services in Miranda? utils

git-svn-id: http://svn.miranda-ng.org/main/trunk@4875 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

2 files changed, 109 insertions, 0 deletions

diff --git a/include/m_utils.h b/include/m_utils.h
index 17640c6d32..3c8a01af89 100644
--- a/include/m_utils.h
+++ b/include/m_utils.h
@@ -348,6 +348,18 @@ __forceinline INT_PTR Utils_AssertInsideScreen(RECT *rc) {
 //Always returns 0

 #define MS_UTILS_GETRANDOM "Utils/GetRandom"

 

+//Generates Base64 encoded string

+//wParam = 0 (unused)

+//lParam = (LPARAM)(char*)pointer to source string

+//Returns (char*)pointer to encoded string

+#define MS_UTILS_ENCODEBASE64 "Utils/EncodeBase64"

+

+//Generates Base64 decoded string

+//wParam = 0 (unused)

+//lParam = (LPARAM)(char*)pointer to encoded string

+//Returns (char*)pointer to decoded string

+#define MS_UTILS_DECODEBASE64 "Utils/DecodeBase64"

+

 //Replace variables in text

 //wParam = (char*/TCHAR*/WCHAR*)string (depends on RVF_UNICODE/RVF_TCHAR flag)

 //lParam = (REPLACEVARSDATA *) data about variables, item with key = 0 terminates the list

diff --git a/src/modules/utils/utils.cpp b/src/modules/utils/utils.cpp
index 276b8b1e84..c6bd60a59b 100644
--- a/src/modules/utils/utils.cpp
+++ b/src/modules/utils/utils.cpp
@@ -471,6 +471,100 @@ static INT_PTR GenerateRandom(WPARAM wParam, LPARAM lParam)
 }

 

 /////////////////////////////////////////////////////////////////////////////////////////

+

+static INT_PTR EncodeBase64(WPARAM wParam, LPARAM lParam)

+{

+	size_t i = 0;

+	char chr[3], enc[4];

+	static char cb64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

+

+	const char *input = (const char *)lParam;

+	size_t length = strlen(input);

+	size_t nLength = 4 * ((length + 2) / 3) + 1;

+

+	char *output = (char *)mir_alloc(nLength);

+	char *p = output;

+ 

+	while (i < length)

+	{

+		chr[0] = input[i++];

+		chr[1] = input[i++];

+		chr[2] = input[i++];

+

+		enc[0] = chr[0] >> 2;

+		enc[1] = ((chr[0] & 0x03) << 4) | (chr[1] >> 4);

+		enc[2] = ((chr[1] & 0x0F) << 2) | (chr[2] >> 6);

+		enc[3] = chr[2] & 0x3F;

+ 

+		*p++ = cb64[enc[0]]; *p++ = cb64[enc[1]];

+

+		if (i - 2 >= length) { *p++ = '='; *p++ = '='; }

+		else if (i - 1 >= length) { *p++ = cb64[enc[2]]; *p++ = '='; }

+		else { *p++ = cb64[enc[2]]; *p++ = cb64[enc[3]]; }

+	}

+

+	*p = 0;

+

+	return (INT_PTR)output;

+}

+

+static int Base64DecodeTable[] = 

+{

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,

+	52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1,

+	-1, 0, 1, 2,  3, 4, 5, 6,  7, 8, 9,10, 11,12,13,14,

+	15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,

+	-1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,

+	41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,

+	-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1

+};

+

+static INT_PTR DecodeBase64(WPARAM wParam, LPARAM lParam)

+{

+	size_t i = 0;

+	char chr[3], enc[4];

+

+	const char *input = (const char *)lParam;

+	size_t length = strlen(input);

+	size_t nLength = (length / 4) * 3 + 1;

+

+	char *output = (char *)mir_alloc(nLength);

+	char *p = output;

+

+	while (i < length)

+	{

+		enc[0] = Base64DecodeTable[input[i++]];

+		enc[1] = Base64DecodeTable[input[i++]];

+		enc[2] = Base64DecodeTable[input[i++]];

+		enc[3] = Base64DecodeTable[input[i++]];

+

+		if (enc[0] == -1 || enc[1] == -1) break;

+

+		chr[0] = (enc[0] << 2) | (enc[1] >> 4);

+		chr[1] = ((enc[1] & 15) << 4) | (enc[2] >> 2);

+		chr[2] = ((enc[2] & 3) << 6) | enc[3];

+

+		*p++ = chr[0];

+

+		if (enc[2] != -1) *p++ = chr[1];

+		if (enc[3] != -1) *p++ = chr[2];

+	}

+

+	*p = 0;

+

+	return (INT_PTR)output;

+}

+

+/////////////////////////////////////////////////////////////////////////////////////////

 int LoadUtilsModule(void)

 {

 	bModuleInitialized = TRUE;

@@ -485,6 +579,9 @@ int LoadUtilsModule(void)
 	CreateServiceFunction(MS_UTILS_GETRANDOM, GenerateRandom);

 	CreateServiceFunction(MS_SYSTEM_RESTART, RestartMiranda);

 

+	CreateServiceFunction(MS_UTILS_ENCODEBASE64, EncodeBase64);

+	CreateServiceFunction(MS_UTILS_DECODEBASE64, DecodeBase64);

+

 	InitOpenUrl();

 	InitWindowList();

 	InitHyperlink();