import magic database as a blob as last resort to make it work

scripts/before_build.sh

@@ -5,5 +5,6 @@ rm -rf index.sist2/
 python3 scripts/mime.py > src/parsing/mime_generated.c
 python3 scripts/serve_static.py > src/web/static_generated.c
 python3 scripts/index_static.py > src/index/static_generated.c
+python3 scripts/magic_static.py > src/magic_generated.c
 
 printf "static const char *const Sist2CommitHash = \"%s\";\n" $(git rev-parse HEAD) > src/git_hash.h

scripts/magic_static.py

@@ -0,0 +1,8 @@
+
+try:
+    with open("/usr/lib/file/magic.mgc", "rb") as f:
+        data = f.read()
+except:
+    data = bytes([])
+
+print("char magic_database_buffer[%d] = {%s};" % (len(data), ",".join(str(int(b)) for b in data)))

src/parsing/parse.c

@@ -5,6 +5,7 @@
 #include "mime.h"
 #include "src/io/serialize.h"
 #include "src/parsing/sidecar.h"
+#include "src/magic_generated.c"
 
 #include <magic.h>
 
@@ -143,7 +144,15 @@ void parse(void *arg) {
         }
 
         magic_t magic = magic_open(MAGIC_MIME_TYPE);
-        magic_load(magic, NULL);
+
+        const char *magic_buffers[1] = {magic_database_buffer,};
+        size_t sizes[1] = {sizeof(magic_database_buffer),};
+
+        int load_ret = magic_load_buffers(magic, (void **) &magic_buffers, sizes, 1);
+
+        if (load_ret != 0) {
+            LOG_FATALF("parse.c", "Could not load libmagic database: (%d)", load_ret)
+        }
 
         const char *magic_mime_str = magic_buffer(magic, buf, bytes_read);
         if (magic_mime_str != NULL) {