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-rw-r--r--osc/unpackOSC.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/osc/unpackOSC.c b/osc/unpackOSC.c
index 3803daf..407cf6f 100644
--- a/osc/unpackOSC.c
+++ b/osc/unpackOSC.c
@@ -93,7 +93,7 @@ The OSC webpage is http://cnmat.cnmat.berkeley.edu/OpenSoundControl
#define MAX_MESG 65536
/* MAX_MESG was 32768 MP: make same as MAX_UDP_PACKET */
-
+#define OSC_MAX_RECURSION 16 /* maximum bundle depth */
/* ----------------------------- was dumpOSC ------------------------- */
/* You may have to redefine this typedef if ints on your system
@@ -123,6 +123,7 @@ typedef struct _unpackOSC
char x_raw[MAX_MESG];/* bytes making up the entire OSC message */
int x_raw_c;/* number of bytes in OSC message */
int x_bundle_flag;/* non-zero if we are processing a bundle */
+ int x_recursion_level;/* number of times we reenter unpackOSCPath */
} t_unpackOSC;
void unpackOSC_setup(void);
@@ -146,6 +147,7 @@ static void *unpackOSC_new(void)
x->x_delay_out = outlet_new(&x->x_obj, &s_float);
x->x_raw_c = x->x_data_atc = 0;
x->x_bundle_flag = 0;
+ x->x_recursion_level = 0;
return (x);
}
@@ -172,11 +174,13 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
if ((argc%4) != 0)
{
post("unpackOSC: Packet size (%d) not a multiple of 4 bytes: dropping packet", argc);
+ x->x_recursion_level = 0;
return;
}
if(argc > MAX_MESG)
{
post("unpackOSC: Packet size (%d) greater than max (%d). Change MAX_MESG and recompile if you want more.", argc, MAX_MESG);
+ x->x_recursion_level = 0;
return;
}
/* copy the list to a byte buffer, checking for bytes only */
@@ -195,12 +199,14 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
else
{
post("unpackOSC: Data out of range (%d), dropping packet", argv[i].a_w.w_float);
+ x->x_recursion_level = 0;
return;
}
}
else
{
post("unpackOSC: Data not float, dropping packet");
+ x->x_recursion_level = 0;
return;
}
}
@@ -216,6 +222,7 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
if (argc < 16)
{
post("unpackOSC: Bundle message too small (%d bytes) for time tag", argc);
+ x->x_recursion_level = 0;
return;
}
@@ -242,16 +249,25 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
if ((size % 4) != 0)
{
post("unpackOSC: Bad size count %d in bundle (not a multiple of 4)", size);
+ x->x_recursion_level = 0;
return;
}
if ((size + i + 4) > argc)
{
post("unpackOSC: Bad size count %d in bundle (only %d bytes left in entire bundle)",
size, argc-i-4);
+ x->x_recursion_level = 0;
return;
}
/* Recursively handle element of bundle */
+ x->x_recursion_level++;
+ if (x->x_recursion_level > OSC_MAX_RECURSION)
+ {
+ post("unpackSOC: bundle depth %d exceeded", OSC_MAX_RECURSION);
+ x->x_recursion_level = 0;
+ return;
+ }
unpackOSC_list(x, s, size, &argv[i+4]);
i += 4 + size;
}
@@ -270,6 +286,7 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
else if ((argc == 24) && (strcmp(buf, "#time") == 0))
{
post("unpackOSC: Time message: %s\n :).\n", buf);
+ x->x_recursion_level = 0;
return;
}
else
@@ -280,6 +297,7 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
if (args == 0)
{
post("unpackOSC: Bad message name string: Dropping entire message.");
+ x->x_recursion_level = 0;
return;
}
#ifdef DEBUG
@@ -299,6 +317,7 @@ static void unpackOSC_list(t_unpackOSC *x, t_symbol *s, int argc, t_atom *argv)
if (x->x_data_atc >= 1)
outlet_anything(x->x_data_out, atom_getsymbol(x->x_data_at), x->x_data_atc-1, x->x_data_at+1);
x->x_data_atc = 0;
+ x->x_recursion_level = 0;
}
static int unpackOSC_path(t_unpackOSC *x, char *path)
@@ -309,7 +328,7 @@ static int unpackOSC_path(t_unpackOSC *x, char *path)
{
for (i = 0; i < 16; ++i) if ('\0' == path[i]) break;
path[i] = '\0';
- post("unpackOSC: Path doesn't begin with \"/\" (%s...)", path);
+ post("unpackOSC: Path doesn't begin with \"/\", dropping message");
return 0;
}
for (i = 1; i < MAX_MESG; ++i)
@@ -320,7 +339,7 @@ static int unpackOSC_path(t_unpackOSC *x, char *path)
return 1;
}
}
- post("unpackOSC: Path too long");
+ post("unpackOSC: Path too long, dropping message");
return 0;
}
#define SMALLEST_POSITIVE_FLOAT 0.000001f