*: Initial Import of Babeld into FRR

This is a direct copy of:
https://github.com/boutier/quagga-merge

From the branch babel-merge

I copied the babeld directory into FRR and then fixed up everything to
compile.

Babeld at this point in time when run will more than likely crash and burn
in it's interfactions with zebra.

I might have messed up the cli, which will need to be looked at

extract.pl.in and vtysh.c need to be fixed up.  Additionally we probably
need to work on DEFUN_NOSH conversion in babeld as well

This code comes from:
Matthieu Boutier <boutier@irif.fr>
Juliusz Chroboczek <jch@irif.fr>

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 394 insertions, 0 deletions

diff --git a/babeld/babel_zebra.c b/babeld/babel_zebra.c
new file mode 100644
index 000000000..bec37c4e2
--- /dev/null
+++ b/babeld/babel_zebra.c
@@ -0,0 +1,394 @@
+/*
+Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+/* FRR's includes */
+#include <zebra.h>
+#include "command.h"
+#include "zclient.h"
+#include "stream.h"
+
+/* babel's includes*/
+#include "babel_zebra.h"
+#include "babel_interface.h"
+#include "xroute.h"
+#include "util.h"
+
+void babelz_zebra_init(void);
+
+
+/* we must use a pointer because of zclient.c's functions (new, free). */
+struct zclient *zclient;
+static int zebra_config_write (struct vty *vty);
+
+/* Debug types */
+static struct {
+    int type;
+    int str_min_len;
+    const char *str;
+} debug_type[] = {
+    {BABEL_DEBUG_COMMON,  1, "common"},
+    {BABEL_DEBUG_KERNEL,  1, "kernel"},
+    {BABEL_DEBUG_FILTER,  1, "filter"},
+    {BABEL_DEBUG_TIMEOUT, 1, "timeout"},
+    {BABEL_DEBUG_IF,      1, "interface"},
+    {BABEL_DEBUG_ROUTE,   1, "route"},
+    {BABEL_DEBUG_ALL,     1, "all"},
+    {0, 0, NULL}
+};
+
+static struct {
+    int str_min_len;
+    const char *str;
+} proto_redistnum_type[ZEBRA_ROUTE_MAX] = {
+    [ZEBRA_ROUTE_BABEL]   = {2, "babel"},
+    [ZEBRA_ROUTE_BGP]     = {2, "bgp"},
+    [ZEBRA_ROUTE_CONNECT] = {1, "connected"},
+    [ZEBRA_ROUTE_HSLS]    = {1, "hsls"},
+    [ZEBRA_ROUTE_ISIS]    = {1, "isis"},
+    [ZEBRA_ROUTE_KERNEL]  = {1, "kernel"},
+    [ZEBRA_ROUTE_OLSR]    = {2, "olsr"},
+    [ZEBRA_ROUTE_OSPF]    = {2, "ospf"},
+    [ZEBRA_ROUTE_OSPF6]   = {5, "ospf6"},
+    [ZEBRA_ROUTE_RIP]     = {1, "rip"},
+    [ZEBRA_ROUTE_RIPNG]   = {4, "ripng"},
+    [ZEBRA_ROUTE_STATIC]  = {2, "static"},
+    [ZEBRA_ROUTE_SYSTEM]  = {2, "system"},
+};
+
+/* Zebra node structure. */
+struct cmd_node zebra_node =
+{
+    ZEBRA_NODE,
+    "%s(config-router)# ",
+    1 /* vtysh? yes */
+};
+
+
+/* Zebra route add and delete treatment (ipv6). */
+static int
+babel_zebra_read_ipv6 (int command, struct zclient *zclient,
+		       zebra_size_t length)
+{
+    struct stream *s;
+    struct zapi_ipv6 api;
+    unsigned long ifindex = -1;
+    struct in6_addr nexthop;
+    struct prefix_ipv6 prefix;
+
+    s = zclient->ibuf;
+    ifindex = 0;
+    memset (&nexthop, 0, sizeof (struct in6_addr));
+    memset (&api, 0, sizeof(struct zapi_ipv6));
+    memset (&prefix, 0, sizeof (struct prefix_ipv6));
+
+    /* Type, flags, message. */
+    api.type = stream_getc (s);
+    api.flags = stream_getc (s);
+    api.message = stream_getc (s);
+
+    /* IPv6 prefix. */
+    prefix.family = AF_INET6;
+    prefix.prefixlen = stream_getc (s);
+    stream_get (&prefix.prefix, s, PSIZE (prefix.prefixlen));
+
+    /* Nexthop, ifindex, distance, metric. */
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) {
+        api.nexthop_num = stream_getc (s);
+        stream_get (&nexthop, s, sizeof(nexthop));
+    }
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) {
+        api.ifindex_num = stream_getc (s);
+        ifindex = stream_getl (s);
+    }
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
+        api.distance = stream_getc (s);
+    else
+        api.distance = 0;
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
+        api.metric = stream_getl (s);
+    else
+        api.metric = 0;
+
+    if (command == ZEBRA_IPV6_ROUTE_ADD)
+        babel_ipv6_route_add(&api, &prefix, ifindex, &nexthop);
+    else
+        babel_ipv6_route_delete(&api, &prefix, ifindex);
+
+    return 0;
+}
+
+static int
+babel_zebra_read_ipv4 (int command, struct zclient *zclient,
+		       zebra_size_t length)
+{
+    struct stream *s;
+    struct zapi_ipv4 api;
+    unsigned long ifindex = -1;
+    struct in_addr nexthop;
+    struct prefix_ipv4 prefix;
+
+    s = zclient->ibuf;
+    ifindex = 0;
+    memset (&nexthop, 0, sizeof (struct in_addr));
+    memset (&api, 0, sizeof(struct zapi_ipv4));
+    memset (&prefix, 0, sizeof (struct prefix_ipv4));
+
+    /* Type, flags, message. */
+    api.type = stream_getc (s);
+    api.flags = stream_getc (s);
+    api.message = stream_getc (s);
+
+    /* IPv6 prefix. */
+    prefix.family = AF_INET;
+    prefix.prefixlen = stream_getc (s);
+    stream_get (&prefix.prefix, s, PSIZE (prefix.prefixlen));
+
+    /* Nexthop, ifindex, distance, metric. */
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) {
+        api.nexthop_num = stream_getc (s);
+        stream_get (&nexthop, s, sizeof(nexthop));
+    }
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) {
+        api.ifindex_num = stream_getc (s);
+        ifindex = stream_getl (s);
+    }
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
+        api.distance = stream_getc (s);
+    else
+        api.distance = 0;
+    if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
+        api.metric = stream_getl (s);
+    else
+        api.metric = 0;
+
+    if (command == ZEBRA_IPV4_ROUTE_ADD) {
+        babel_ipv4_route_add(&api, &prefix, ifindex, &nexthop);
+    } else {
+        babel_ipv4_route_delete(&api, &prefix, ifindex);
+    }
+
+    return 0;
+}
+
+static int
+babel_proto_redistnum(const char *s)
+{
+    int i;
+    if (! s)
+        return -1;
+    int len = strlen(s);
+
+    for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
+        if (len <= (int)strlen(proto_redistnum_type[i].str) &&
+            strncmp(proto_redistnum_type[i].str, s,
+                    proto_redistnum_type[i].str_min_len) == 0) {
+            return i;
+        }
+    }
+
+    return -1;
+}
+
+/* [Babel Command] */
+DEFUN (babel_redistribute_type,
+       babel_redistribute_type_cmd,
+       "redistribute " FRR_REDIST_STR_BABELD,
+       "Redistribute\n"
+       FRR_REDIST_HELP_STR_BABELD)
+{
+    int type;
+
+    type = babel_proto_redistnum(argv[1]->arg);
+
+    if (type < 0) {
+        vty_out(vty, "Invalid type %s%s", argv[1]->arg, VTY_NEWLINE);
+        return CMD_WARNING;
+    }
+
+    zclient_redistribute (ZEBRA_REDISTRIBUTE_ADD, zclient, AFI_IP, type, 0, VRF_DEFAULT);
+    return CMD_SUCCESS;
+}
+
+/* [Babel Command] */
+DEFUN (no_babel_redistribute_type,
+       no_babel_redistribute_type_cmd,
+       "no redistribute " FRR_REDIST_STR_BABELD,
+       NO_STR
+       "Redistribute\n"
+       FRR_REDIST_HELP_STR_BABELD)
+{
+    int type;
+
+    type = babel_proto_redistnum(argv[2]->arg);
+
+    if (type < 0) {
+        vty_out(vty, "Invalid type %s%s", argv[2]->arg, VTY_NEWLINE);
+        return CMD_WARNING;
+    }
+
+    zclient_redistribute (ZEBRA_REDISTRIBUTE_DELETE, zclient, AFI_IP, type, 0, VRF_DEFAULT);
+    /* perhaps should we remove xroutes having the same type... */
+    return CMD_SUCCESS;
+}
+
+#ifndef NO_DEBUG
+/* [Babel Command] */
+DEFUN (debug_babel,
+       debug_babel_cmd,
+       "debug babel (common|kernel|filter|timeout|interface|route|all)",
+       "Enable debug messages for specific or all part.\n"
+       "Babel information\n"
+       "Common messages (default)\n"
+       "Kernel messages\n"
+       "Filter messages\n"
+       "Timeout messages\n"
+       "Interface messages\n"
+       "Route messages\n"
+       "All messages\n")
+{
+    int i;
+
+    for(i = 0; debug_type[i].str != NULL; i++) {
+        if (strncmp (debug_type[i].str, argv[2]->arg,
+                     debug_type[i].str_min_len) == 0) {
+            debug |= debug_type[i].type;
+            return CMD_SUCCESS;
+        }
+    }
+
+    vty_out(vty, "Invalid type %s%s", argv[2]->arg, VTY_NEWLINE);
+
+    return CMD_WARNING;
+}
+
+/* [Babel Command] */
+DEFUN (no_debug_babel,
+       no_debug_babel_cmd,
+       "no debug babel (common|kernel|filter|timeout|interface|route|all)",
+       NO_STR
+       "Disable debug messages for specific or all part.\n"
+       "Babel information\n"
+       "Common messages (default)\n"
+       "Kernel messages\n"
+       "Filter messages\n"
+       "Timeout messages\n"
+       "Interface messages\n"
+       "Route messages\n"
+       "All messages\n")
+{
+    int i;
+
+    for (i = 0; debug_type[i].str; i++) {
+        if (strncmp(debug_type[i].str, argv[3]->arg,
+                    debug_type[i].str_min_len) == 0) {
+            debug &= ~debug_type[i].type;
+            return CMD_SUCCESS;
+        }
+    }
+
+    vty_out(vty, "Invalid type %s%s", argv[3]->arg, VTY_NEWLINE);
+
+    return CMD_WARNING;
+}
+#endif /* NO_DEBUG */
+
+/* Output "debug" statement lines, if necessary. */
+int
+debug_babel_config_write (struct vty * vty)
+{
+#ifdef NO_DEBUG
+    return 0;
+#else
+    int i, lines = 0;
+
+    if (debug == BABEL_DEBUG_ALL)
+    {
+        vty_out (vty, "debug babel all%s", VTY_NEWLINE);
+        lines++;
+    }
+    else
+        for (i = 0; debug_type[i].str != NULL; i++)
+            if
+            (
+                debug_type[i].type != BABEL_DEBUG_ALL
+                && CHECK_FLAG (debug, debug_type[i].type)
+            )
+            {
+                vty_out (vty, "debug babel %s%s", debug_type[i].str, VTY_NEWLINE);
+                lines++;
+            }
+    if (lines)
+    {
+        vty_out (vty, "!%s", VTY_NEWLINE);
+        lines++;
+    }
+    return lines;
+#endif /* NO_DEBUG */
+}
+
+void babelz_zebra_init(void)
+{
+    zclient = zclient_new(master);
+    zclient_init(zclient, ZEBRA_ROUTE_BABEL, 0);
+
+    zclient->interface_add = babel_interface_add;
+    zclient->interface_delete = babel_interface_delete;
+    zclient->interface_up = babel_interface_up;
+    zclient->interface_down = babel_interface_down;
+    zclient->interface_address_add = babel_interface_address_add;
+    zclient->interface_address_delete = babel_interface_address_delete;
+    zclient->redistribute_route_ipv4_add = babel_zebra_read_ipv4;
+    zclient->redistribute_route_ipv4_del = babel_zebra_read_ipv4;
+    zclient->redistribute_route_ipv6_add = babel_zebra_read_ipv6;
+    zclient->redistribute_route_ipv6_del = babel_zebra_read_ipv6;
+
+    install_node (&zebra_node, zebra_config_write);
+    install_element(BABEL_NODE, &babel_redistribute_type_cmd);
+    install_element(BABEL_NODE, &no_babel_redistribute_type_cmd);
+    install_element(ENABLE_NODE, &debug_babel_cmd);
+    install_element(ENABLE_NODE, &no_debug_babel_cmd);
+    install_element(CONFIG_NODE, &debug_babel_cmd);
+    install_element(CONFIG_NODE, &no_debug_babel_cmd);
+}
+
+static int
+zebra_config_write (struct vty *vty)
+{
+    if (! zclient->enable)
+    {
+        vty_out (vty, "no router zebra%s", VTY_NEWLINE);
+        return 1;
+    }
+    else if (! zclient->redist[ZEBRA_ROUTE_BABEL])
+    {
+        vty_out (vty, "router zebra%s", VTY_NEWLINE);
+        vty_out (vty, " no redistribute babel%s", VTY_NEWLINE);
+        return 1;
+    }
+    return 0;
+}
+
+void
+babel_zebra_close_connexion(void)
+{
+    zclient_stop(zclient);
+}