X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=utils.c;h=ba2695272ac9a1fac486ebdecc6f97544aaf54fb;hp=14e966a49f8052dbe6a2727987aa54ff238fe80b;hb=3eea8576d48d9b20cc1c6b46f54c7345a39d13aa;hpb=8370eef2bc724b3c08f8665e3caaaae9b75012f7

diff --git a/utils.c b/utils.c
index 14e966a..ba26952 100644
--- a/utils.c
+++ b/utils.c
@@ -17,6 +17,11 @@
 
 #include <arpa/inet.h>
 #include <netinet/in.h>
+#include <sys/socket.h>
+
+#ifdef __APPLE__
+#include <libproc.h>
+#endif
 
 void
 __vlist_simple_init(struct vlist_simple_tree *tree, int offset)
@@ -140,3 +145,73 @@ format_macaddr(uint8_t *mac)
 
 	return str;
 }
+
+uint32_t
+crc32_file(FILE *fp)
+{
+	static uint32_t *crcvals = NULL;
+	if (!crcvals) {
+		crcvals = malloc(sizeof(*crcvals) * 256);
+
+		for (size_t i = 0; i < 256; ++i) {
+			uint32_t c = i;
+			for (size_t j = 0; j < 8; ++j)
+				c = (c & 1) ? (0xEDB88320 ^ (c >> 1)) : (c >> 1);
+			crcvals[i] = c;
+		}
+	}
+
+	uint8_t buf[1024];
+	size_t len;
+	uint32_t c = 0xFFFFFFFF;
+
+	do {
+		len = fread(buf, 1, sizeof(buf), fp);
+		for (size_t i = 0; i < len; ++i)
+			c = crcvals[(c ^ buf[i]) & 0xFF] ^ (c >> 8);
+	} while (len == sizeof(buf));
+
+	return c ^ 0xFFFFFFFF;
+}
+
+bool check_pid_path(int pid, const char *exe)
+{
+	int proc_exe_len;
+	int exe_len = strlen(exe);
+
+#ifdef __APPLE__
+	char proc_exe_buf[PROC_PIDPATHINFO_SIZE];
+
+	proc_exe_len = proc_pidpath(pid, proc_exe_buf, sizeof(proc_exe_buf));
+#else
+	char proc_exe[32];
+	char *proc_exe_buf = alloca(exe_len);
+
+	sprintf(proc_exe, "/proc/%d/exe", pid);
+	proc_exe_len = readlink(proc_exe, proc_exe_buf, exe_len);
+#endif
+
+	if (proc_exe_len != exe_len)
+		return false;
+
+	return !memcmp(exe, proc_exe_buf, exe_len);
+}
+
+static const char * const uci_validate_name[__BLOBMSG_TYPE_LAST] = {
+	[BLOBMSG_TYPE_STRING] = "string",
+	[BLOBMSG_TYPE_ARRAY] = "list(string)",
+	[BLOBMSG_TYPE_INT32] = "uinteger",
+	[BLOBMSG_TYPE_BOOL] = "bool",
+};
+
+const char*
+uci_get_validate_string(const struct uci_blob_param_list *p, int i)
+{
+	if (p->validate[i])
+		return p->validate[i];
+
+	else if (uci_validate_name[p->params[i].type])
+		return uci_validate_name[p->params[i].type];
+
+	return p->validate[BLOBMSG_TYPE_STRING];
+}