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The DHCPv6 support includes IPV6 dhcp-range and dhcp-host for one IPv6 subnetwork on one interface. This support will only work if dnsmasq version >= 2.64; otherwise an error occurs if dhcp-range or dhcp-host is specified for an IPv6 address. Essentially, this change provides the same DHCP support for IPv6 that has been available for IPv4. With dnsmasq >= 2.64, support for the RA service is also now provided by dnsmasq (radvd is no longer used/started). (Although at least one version of dnsmasq prior to 2.64 "supported" IPv6 Router Advertisement, there were bugs (fixed in 2.64) that rendered it unusable.) Documentation and the network schema has been updated to reflect the new support.
189 lines
5.3 KiB
C
189 lines
5.3 KiB
C
#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include "internal.h"
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#include "testutils.h"
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#include "network_conf.h"
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#include "command.h"
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#include "memory.h"
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#include "network/bridge_driver.h"
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/* Replace all occurrences of @token in @buf by @replacement and adjust size of
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* @buf accordingly. Returns 0 on success and -1 on out-of-memory errors. */
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static int replaceTokens(char **buf, const char *token, const char *replacement) {
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size_t token_start, token_end;
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size_t buf_len, rest_len;
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const size_t token_len = strlen(token);
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const size_t replacement_len = strlen(replacement);
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const int diff = replacement_len - token_len;
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buf_len = rest_len = strlen(*buf) + 1;
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token_end = 0;
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for (;;) {
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char *match = strstr(*buf + token_end, token);
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if (match == NULL)
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break;
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token_start = match - *buf;
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rest_len -= token_start + token_len - token_end;
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token_end = token_start + token_len;
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buf_len += diff;
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if (diff > 0)
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if (VIR_REALLOC_N(*buf, buf_len) < 0)
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return -1;
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if (diff != 0)
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memmove(*buf + token_end + diff, *buf + token_end, rest_len);
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memcpy(*buf + token_start, replacement, replacement_len);
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token_end += diff;
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}
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/* if diff < 0, we could shrink the buffer here... */
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return 0;
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}
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static int
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testCompareXMLToArgvFiles(const char *inxml, const char *outargv, dnsmasqCapsPtr caps)
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{
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char *inXmlData = NULL;
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char *outArgvData = NULL;
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char *actual = NULL;
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int ret = -1;
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virNetworkDefPtr dev = NULL;
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virNetworkObjPtr obj = NULL;
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virCommandPtr cmd = NULL;
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char *pidfile = NULL;
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dnsmasqContext *dctx = NULL;
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if (virtTestLoadFile(inxml, &inXmlData) < 0)
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goto fail;
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if (virtTestLoadFile(outargv, &outArgvData) < 0)
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goto fail;
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if (replaceTokens(&outArgvData, "@DNSMASQ@", DNSMASQ))
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goto fail;
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if (!(dev = virNetworkDefParseString(inXmlData)))
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goto fail;
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if (VIR_ALLOC(obj) < 0)
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goto fail;
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obj->def = dev;
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dctx = dnsmasqContextNew(dev->name, "/var/lib/libvirt/dnsmasq");
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if (dctx == NULL)
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goto fail;
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if (networkBuildDhcpDaemonCommandLine(obj, &cmd, pidfile, dctx, caps) < 0)
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goto fail;
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if (!(actual = virCommandToString(cmd)))
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goto fail;
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if (STRNEQ(outArgvData, actual)) {
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virtTestDifference(stderr, outArgvData, actual);
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goto fail;
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}
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ret = 0;
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fail:
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VIR_FREE(inXmlData);
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VIR_FREE(outArgvData);
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VIR_FREE(actual);
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VIR_FREE(pidfile);
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virCommandFree(cmd);
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virNetworkObjFree(obj);
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dnsmasqContextFree(dctx);
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return ret;
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}
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typedef struct {
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const char *name;
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dnsmasqCapsPtr caps;
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} testInfo;
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static int
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testCompareXMLToArgvHelper(const void *data)
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{
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int result = -1;
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const testInfo *info = data;
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char *inxml = NULL;
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char *outxml = NULL;
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if (virAsprintf(&inxml, "%s/networkxml2argvdata/%s.xml",
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abs_srcdir, info->name) < 0 ||
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virAsprintf(&outxml, "%s/networkxml2argvdata/%s.argv",
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abs_srcdir, info->name) < 0) {
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goto cleanup;
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}
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result = testCompareXMLToArgvFiles(inxml, outxml, info->caps);
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cleanup:
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VIR_FREE(inxml);
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VIR_FREE(outxml);
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return result;
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}
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static char *
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testDnsmasqLeaseFileName(const char *netname)
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{
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char *leasefile;
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virAsprintf(&leasefile, "/var/lib/libvirt/dnsmasq/%s.leases",
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netname);
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return leasefile;
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}
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static int
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mymain(void)
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{
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int ret = 0;
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dnsmasqCapsPtr restricted
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= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.48", DNSMASQ);
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dnsmasqCapsPtr full
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= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.63\n--bind-dynamic", DNSMASQ);
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dnsmasqCapsPtr dhcpv6
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= dnsmasqCapsNewFromBuffer("Dnsmasq version 2.64\n--bind-dynamic", DNSMASQ);
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networkDnsmasqLeaseFileName = testDnsmasqLeaseFileName;
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#define DO_TEST(xname, xcaps) \
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do { \
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static testInfo info; \
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\
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info.name = xname; \
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info.caps = xcaps; \
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if (virtTestRun("Network XML-2-Argv " xname, \
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1, testCompareXMLToArgvHelper, &info) < 0) { \
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ret = -1; \
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} \
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} while (0)
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DO_TEST("isolated-network", restricted);
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DO_TEST("netboot-network", restricted);
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DO_TEST("netboot-proxy-network", restricted);
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DO_TEST("nat-network-dns-srv-record-minimal", restricted);
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DO_TEST("routed-network", full);
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DO_TEST("nat-network", dhcpv6);
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DO_TEST("nat-network-dns-txt-record", full);
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DO_TEST("nat-network-dns-srv-record", full);
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DO_TEST("nat-network-dns-hosts", full);
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DO_TEST("dhcp6-network", dhcpv6);
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DO_TEST("dhcp6-nat-network", dhcpv6);
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DO_TEST("dhcp6host-routed-network", dhcpv6);
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return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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VIRT_TEST_MAIN(mymain)
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