(no commit message)

[citadel.git] / libcitadel / lib / mime_parser.c

diff --git a/libcitadel/lib/mime_parser.c b/libcitadel/lib/mime_parser.c
index 2b14d7129d9b1f8c79389af76104a42edc369e6c..a7753275afc1ac67928a3fe9802a8ee003e50ed7 100644 (file)
--- 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;
+
+}