netifd: Fix printf calls + function declarations.

[project/netifd.git] / utils.c

diff --git a/utils.c b/utils.c
index cf0718a..ba26952 100644 (file)
--- a/utils.c
+++ b/utils.c
@@ -1,8 +1,217 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #include <string.h>
+#include <stdlib.h>
 #include "utils.h"
 
-int avl_strcmp(const void *k1, const void *k2, void *ptr)
+#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)
+{
+       INIT_LIST_HEAD(&tree->list);
+       tree->version = 1;
+       tree->head_offset = offset;
+}
+
+void
+vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
+{
+       char *ptr;
+
+       list_del(&node->list);
+       ptr = (char *) node - tree->head_offset;
+       free(ptr);
+}
+
+void
+vlist_simple_flush(struct vlist_simple_tree *tree)
+{
+       struct vlist_simple_node *n, *tmp;
+
+       list_for_each_entry_safe(n, tmp, &tree->list, list) {
+               if ((n->version == tree->version || n->version == -1) &&
+                   tree->version != -1)
+                       continue;
+
+               vlist_simple_delete(tree, n);
+       }
+}
+
+void
+vlist_simple_replace(struct vlist_simple_tree *dest, struct vlist_simple_tree *old)
+{
+       struct vlist_simple_node *n, *tmp;
+
+       vlist_simple_update(dest);
+       list_for_each_entry_safe(n, tmp, &old->list, list) {
+               list_del(&n->list);
+               vlist_simple_add(dest, n);
+       }
+       vlist_simple_flush(dest);
+}
+
+void
+vlist_simple_flush_all(struct vlist_simple_tree *tree)
+{
+       tree->version = -1;
+       vlist_simple_flush(tree);
+}
+
+unsigned int
+parse_netmask_string(const char *str, bool v6)
+{
+       struct in_addr addr;
+       unsigned int ret;
+       char *err = NULL;
+
+       if (!strchr(str, '.')) {
+               ret = strtoul(str, &err, 0);
+               if (err && *err)
+                       goto error;
+
+               return ret;
+       }
+
+       if (v6)
+               goto error;
+
+       if (inet_aton(str, &addr) != 1)
+               goto error;
+
+       return 32 - fls(~(ntohl(addr.s_addr)));
+
+error:
+       return ~0;
+}
+
+bool
+split_netmask(char *str, unsigned int *netmask, bool v6)
 {
-       return strcmp(k1, k2);
+       char *delim = strchr(str, '/');
+
+       if (delim) {
+               *(delim++) = 0;
+
+               *netmask = parse_netmask_string(delim, v6);
+       }
+       return true;
 }
 
+int
+parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
+{
+       char *astr = alloca(strlen(str) + 1);
+
+       strcpy(astr, str);
+       if (!split_netmask(astr, netmask, af == AF_INET6))
+               return 0;
+
+       if (af == AF_INET6) {
+               if (*netmask > 128)
+                       return 0;
+       } else {
+               if (*netmask > 32)
+                       return 0;
+       }
+
+       return inet_pton(af, astr, addr);
+}
+
+char *
+format_macaddr(uint8_t *mac)
+{
+       static char str[sizeof("ff:ff:ff:ff:ff:ff ")];
+
+       snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x",
+                mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+
+       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];
+}