Add pcap_pcc source file and headerbaserock/2.4.7-openwrt

2 files changed, 81 insertions, 0 deletions

diff --git a/pppd/pcap_pcc.c b/pppd/pcap_pcc.c
new file mode 100644
index 0000000..770c338
--- /dev/null
+++ b/pppd/pcap_pcc.c
@@ -0,0 +1,74 @@
+#include <pcap.h>
+#include <pcap-bpf.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "pppd.h"
+
+int pcap_pre_compiled (char * fname, struct bpf_program *p)
+{
+    char buf[128];
+    int line = 0, size = 0, index=0, ret=1;
+    FILE *f = fopen (fname, "r");
+    if (!f)
+    {
+       option_error("error opening precompiled active-filter '%s': %s",
+                    fname, strerror (errno));
+       return 0;
+    }
+    while (fgets (buf, 127, f))
+    {
+       line++;
+       if (*buf == '#')
+           continue;
+       if (size)
+       {
+           /*
+             struct bpf_insn {
+             u_short   code;
+             u_char    jt;
+             u_char    jf;
+             bpf_int32 k;
+             }
+           */
+           struct bpf_insn * insn = & p->bf_insns[index];
+           unsigned code, jt, jf, k;
+           if (sscanf (buf, "%u %u %u %u", &code, &jt, &jf, &k) != 4)
+           {
+               goto err;
+           }
+           insn->code = code;
+           insn->jt = jt;
+           insn->jf = jf;
+           insn->k  = k;
+           index++;
+       }
+       else
+       {
+           if (sscanf (buf, "%u", &size) != 1)
+           {
+               goto err;
+           }
+           p->bf_len = size;
+           p->bf_insns = (struct bpf_insn *) 
+               malloc (size * sizeof (struct bpf_insn));
+       }
+    } 
+    if (size != index)
+    {
+       option_error("error in precompiled active-filter,"
+                    " expected %d expressions, got %dn",
+                    size, index);
+       ret = 0;
+    }
+    fclose(f);
+    return ret;
+
+err:
+  option_error("error in precompiled active-filter"
+              " expression line %s:%d (wrong size)\n", 
+              fname, line);
+  fclose (f);
+  return 0;
+}
diff --git a/pppd/pcap_pcc.h b/pppd/pcap_pcc.h
new file mode 100644
index 0000000..a0b18d7
--- /dev/null
+++ b/pppd/pcap_pcc.h
@@ -0,0 +1,7 @@
+#ifndef PCAP_PCC_H
+#define PCAP_PCC_H
+
+#include <pcap.h>
+
+int pcap_pre_compiled (char * fname, struct bpf_program *p);
+#endif /* PCAP_PCC_H */