chiark / gitweb /
network-internal: initialize _cleanup_ variable
[elogind.git] / src / libsystemd-network / network-internal.c
index 3686267..7a7a4ea 100644 (file)
 #include "siphash24.h"
 #include "libudev-private.h"
 #include "network-internal.h"
+#include "dhcp-lease-internal.h"
 #include "log.h"
 #include "utf8.h"
 #include "util.h"
 #include "conf-parser.h"
 #include "condition.h"
 
-#define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a)
-
-int net_get_unique_predictable_data(struct udev_device *device, uint8_t result[8]) {
-        size_t l, sz = 0;
+const char *net_get_name(struct udev_device *device) {
         const char *name = NULL, *field = NULL;
-        int r;
-        uint8_t *v;
+
+        assert(device);
 
         /* fetch some persistent data unique (on this machine) to this device */
-        FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT", "ID_NET_NAME_PATH", "ID_NET_NAME_MAC") {
+        FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT",
+                       "ID_NET_NAME_PATH", "ID_NET_NAME_MAC") {
                 name = udev_device_get_property_value(device, field);
                 if (name)
                         break;
         }
 
+        return name;
+}
+
+#define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a)
+
+int net_get_unique_predictable_data(struct udev_device *device, uint8_t result[8]) {
+        size_t l, sz = 0;
+        const char *name = NULL;
+        int r;
+        uint8_t *v;
+
+        assert(device);
+
+        name = net_get_name(device);
         if (!name)
                 return -ENOENT;
 
@@ -79,7 +92,7 @@ bool net_match_config(const struct ether_addr *match_mac,
                       Condition *match_virt,
                       Condition *match_kernel,
                       Condition *match_arch,
-                      const char *dev_mac,
+                      const struct ether_addr *dev_mac,
                       const char *dev_path,
                       const char *dev_parent_driver,
                       const char *dev_driver,
@@ -98,7 +111,7 @@ bool net_match_config(const struct ether_addr *match_mac,
         if (match_arch && !condition_test_architecture(match_arch))
                 return 0;
 
-        if (match_mac && (!dev_mac || memcmp(match_mac, ether_aton(dev_mac), ETH_ALEN)))
+        if (match_mac && (!dev_mac || memcmp(match_mac, dev_mac, ETH_ALEN)))
                 return 0;
 
         if (match_path && (!dev_path || fnmatch(match_path, dev_path, 0)))
@@ -179,7 +192,7 @@ int config_parse_ifname(const char *unit,
                         void *userdata) {
 
         char **s = data;
-        char *n;
+        _cleanup_free_ char *n = NULL;
 
         assert(filename);
         assert(lvalue);
@@ -198,12 +211,11 @@ int config_parse_ifname(const char *unit,
         }
 
         free(*s);
-        if (*n)
+        if (*n) {
                 *s = n;
-        else {
-                free(n);
+                n = NULL;
+        } else
                 *s = NULL;
-        }
 
         return 0;
 }
@@ -326,3 +338,185 @@ int net_parse_inaddr(const char *address, unsigned char *family, void *dst) {
 
         return 0;
 }
+
+void serialize_in_addrs(FILE *f, const char *key, struct in_addr *addresses, size_t size) {
+        unsigned i;
+
+        assert(f);
+        assert(key);
+        assert(addresses);
+        assert(size);
+
+        fprintf(f, "%s=", key);
+
+        for (i = 0; i < size; i++)
+                fprintf(f, "%s%s", inet_ntoa(addresses[i]),
+                        (i < (size - 1)) ? " ": "");
+
+        fputs("\n", f);
+}
+
+int deserialize_in_addrs(struct in_addr **ret, size_t *ret_size, const char *string) {
+        _cleanup_free_ struct in_addr *addresses = NULL;
+        size_t size = 0;
+        char *word, *state;
+        size_t len;
+
+        assert(ret);
+        assert(ret_size);
+        assert(string);
+
+        FOREACH_WORD(word, len, string, state) {
+                _cleanup_free_ char *addr_str = NULL;
+                struct in_addr *new_addresses;
+                int r;
+
+                new_addresses = realloc(addresses, (size + 1) * sizeof(struct in_addr));
+                if (!new_addresses)
+                        return -ENOMEM;
+                else
+                        addresses = new_addresses;
+
+                addr_str = strndup(word, len);
+                if (!addr_str)
+                        return -ENOMEM;
+
+                r = inet_pton(AF_INET, addr_str, &(addresses[size]));
+                if (r <= 0)
+                        continue;
+
+                size ++;
+        }
+
+        *ret_size = size;
+        *ret = addresses;
+        addresses = NULL;
+
+        return 0;
+}
+
+int deserialize_in6_addrs(struct in6_addr **ret, size_t *ret_size, const char *string) {
+        _cleanup_free_ struct in6_addr *addresses = NULL;
+        size_t size = 0;
+        char *word, *state;
+        size_t len;
+
+        assert(ret);
+        assert(ret_size);
+        assert(string);
+
+        FOREACH_WORD(word, len, string, state) {
+                _cleanup_free_ char *addr_str = NULL;
+                struct in6_addr *new_addresses;
+                int r;
+
+                new_addresses = realloc(addresses, (size + 1) * sizeof(struct in6_addr));
+                if (!new_addresses)
+                        return -ENOMEM;
+                else
+                        addresses = new_addresses;
+
+                addr_str = strndup(word, len);
+                if (!addr_str)
+                        return -ENOMEM;
+
+                r = inet_pton(AF_INET6, addr_str, &(addresses[size]));
+                if (r <= 0)
+                        continue;
+
+                size++;
+        }
+
+        *ret_size = size;
+        *ret = addresses;
+        addresses = NULL;
+
+        return 0;
+}
+
+void serialize_dhcp_routes(FILE *f, const char *key, struct sd_dhcp_route *routes, size_t size) {
+        unsigned i;
+
+        assert(f);
+        assert(key);
+        assert(routes);
+        assert(size);
+
+        fprintf(f, "%s=", key);
+
+        for (i = 0; i < size; i++)
+                fprintf(f, "%s/%" PRIu8 ",%s%s", inet_ntoa(routes[i].dst_addr),
+                        routes[i].dst_prefixlen, inet_ntoa(routes[i].gw_addr),
+                        (i < (size - 1)) ? " ": "");
+
+        fputs("\n", f);
+}
+
+int deserialize_dhcp_routes(struct sd_dhcp_route **ret, size_t *ret_size, size_t *ret_allocated, const char *string) {
+        _cleanup_free_ struct sd_dhcp_route *routes = NULL;
+        size_t size = 0, allocated = 0;
+        char *word, *state;
+        size_t len;
+
+        assert(ret);
+        assert(ret_size);
+        assert(ret_allocated);
+        assert(string);
+
+        FOREACH_WORD(word, len, string, state) {
+                /* WORD FORMAT: dst_ip/dst_prefixlen,gw_ip */
+                _cleanup_free_ char* entry = NULL;
+                char *tok, *tok_end;
+                unsigned n;
+                int r;
+
+                if (!GREEDY_REALLOC(routes, allocated, size + 1))
+                        return -ENOMEM;
+
+                entry = strndup(word, len);
+                if(!entry)
+                        return -ENOMEM;
+
+                tok = entry;
+
+                /* get the subnet */
+                tok_end = strchr(tok, '/');
+                if (!tok_end)
+                        continue;
+                *tok_end = '\0';
+
+                r = inet_aton(tok, &routes[size].dst_addr);
+                if (r == 0)
+                        continue;
+
+                tok = tok_end + 1;
+
+                /* get the prefixlen */
+                tok_end = strchr(tok, ',');
+                if (!tok_end)
+                        continue;
+
+                *tok_end = '\0';
+
+                r = safe_atou(tok, &n);
+                if (r < 0 || n > 32)
+                        continue;
+
+                routes[size].dst_prefixlen = (uint8_t) n;
+                tok = tok_end + 1;
+
+                /* get the gateway */
+                r = inet_aton(tok, &routes[size].gw_addr);
+                if (r == 0)
+                        continue;
+
+                size++;
+        }
+
+        *ret_size = size;
+        *ret_allocated = allocated;
+        *ret = routes;
+        routes = NULL;
+
+        return 0;
+}