No longer assume that a QR filename contains a quote (Fixes #204)

include/remote.h

@@ -29,6 +29,7 @@
 
 #include "common.h"
 #include "draw.h"
+#include <ctype.h>
 
 #define THEMEPLAZA_BASE_URL "https://themeplaza.eu"
 #define THEMEPLAZA_API_URL "/api/anemone/v1"

source/remote.c

@@ -807,10 +807,7 @@ u32 http_get(const char *url, char ** filename, char ** buf, InstallType install
             return 0;
         }
 
-        DEBUG(content_disposition);
+        char * tok = strstr(content_disposition, "filename=");
-        char * tok = strtok(content_disposition, "\"");
-        DEBUG(tok);
-        tok = strtok(NULL, "\"");
 
         if(!(tok))
         {
@@ -822,6 +819,17 @@ u32 http_get(const char *url, char ** filename, char ** buf, InstallType install
             return 0;
         }
 
+        tok += sizeof("filename=") - 1;
+        if(ispunct((int)*tok))
+        {
+            tok++;
+        }
+        char* last_char = tok + strlen(tok) - 1;
+        if(ispunct((int)*last_char))
+        {
+            *last_char = '\0';
+        }
+
         char *illegal_characters = "\"?;:/\\+";
         for (size_t i = 0; i < strlen(tok); i++)
         {