X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=libcitadel%2Flib%2Fmime_parser.c;h=a7753275afc1ac67928a3fe9802a8ee003e50ed7;hb=5f71f867cba5865e2b359009c5dc60adbefc7762;hp=2b14d7129d9b1f8c79389af76104a42edc369e6c;hpb=d1ff575b169bf1028c9b36bd535b467f00ee2c6a;p=citadel.git

diff --git a/libcitadel/lib/mime_parser.c b/libcitadel/lib/mime_parser.c
index 2b14d7129..a7753275a 100644
--- a/libcitadel/lib/mime_parser.c
+++ b/libcitadel/lib/mime_parser.c
@@ -637,3 +637,63 @@ void mime_parser(char *content_start,
 			PostMultiPartCallBack,
 			userdata, dont_decode);
 }
+
+
+
+
+
+
+typedef struct _MimeGuess {
+	const char *Pattern;
+	size_t PatternLen;
+	long PatternOffset;
+	const char *MimeString;
+} MimeGuess;
+
+MimeGuess MyMimes [] = {
+	{
+		"GIF",
+		3,
+		0,
+		"image/gif"
+	},
+	{
+		"\xff\xd8",
+		2,
+		0,
+		"image/jpeg"
+	},
+	{
+		"\x89PNG",
+		4,
+		0,
+		"image/png"
+	},
+	{ // last...
+		"",
+		0,
+		0,
+		""
+	}
+};
+
+
+const char *GuessMimeType(char *data, size_t dlen)
+{
+	int MimeIndex = 0;
+
+	while (MyMimes[MimeIndex].PatternLen != 0)
+	{
+		if ((MyMimes[MimeIndex].PatternLen + 
+		     MyMimes[MimeIndex].PatternOffset < dlen) &&
+		    strncmp(MyMimes[MimeIndex].Pattern, 
+			    &data[MyMimes[MimeIndex].PatternOffset], 
+			    MyMimes[MimeIndex].PatternLen) == 0)
+		{
+			break;
+		}
+		MimeIndex ++;
+	}
+	return MyMimes[MimeIndex].MimeString;
+
+}