command: allow passing memory addresses to overlay_add

For the sake of libmpv. Might make things much easier for the user,
especially on Windows. On the other hand, it's a bit sketchy that a
command exists that makes the player access arbitrary memory regions.
(But do note that input commands are not meant to be "secure" and never
were - for example, there's the "run" command, which obviously allows
running random shell commands.)

1 files changed, 6 insertions, 0 deletions

diff --git a/player/command.c b/player/command.c
index ef75594f7b..1b0a7df0cb 100644
--- a/player/command.c
+++ b/player/command.c
@@ -3326,6 +3326,12 @@ static int overlay_add(struct MPContext *mpctx, int id, int x, int y,
         if (!file[1] || end[0])
             fd = -1;
         close_fd = false;
+    } else if (file[0] == '&') {
+        char *end;
+        unsigned long long addr = strtoull(&file[1], &end, 0);
+        if (!file[1] || end[0])
+            addr = 0;
+        p = (void *)(uintptr_t)addr;
     } else {
         fd = open(file, O_RDONLY | O_BINARY | O_CLOEXEC);
     }