diff options
author | Eugene Yakubovich <eyakubovich@gmail.com> | 2014-06-27 15:00:06 -0700 |
---|---|---|
committer | Tom Gundersen <teg@jklm.no> | 2014-06-29 15:18:21 +0200 |
commit | e1ea665edac17d75fce01b72dadfa3211b60df2c (patch) | |
tree | 9f1d4c8ae93862cf5ebae973cd48d053ef34c0dd /src/libsystemd-network/network-internal.c | |
parent | ed942a9eb22d50f667909ad6184b45015d28d054 (diff) |
Add support for DHCP static route options
This adds support for DHCP options 33 and 121: Static Route and
Classless Static Route. To enable this feature, set UseRoutes=true
in .network file. Returned routes are added to the routing table.
Diffstat (limited to 'src/libsystemd-network/network-internal.c')
-rw-r--r-- | src/libsystemd-network/network-internal.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/libsystemd-network/network-internal.c b/src/libsystemd-network/network-internal.c index 97217c12e5..a5db0c5353 100644 --- a/src/libsystemd-network/network-internal.c +++ b/src/libsystemd-network/network-internal.c @@ -28,6 +28,7 @@ #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" @@ -432,3 +433,88 @@ int deserialize_in6_addrs(struct in6_addr **ret, size_t *ret_size, const char *s 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; + char *tok, *tok_end; + unsigned n; + int r; + + if (!GREEDY_REALLOC(routes, allocated, size + 1)) + return -ENOMEM; + + entry = strndup(word, len); + + 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; +} |