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Config parsing error-handling update.

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This commit is contained in:
Simon Kelley
2012-07-12 20:52:12 +01:00
parent 9609baee41
commit c4a7f90ebb
6 changed files with 292 additions and 349 deletions
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3
CHANGELOG
View File

@@ -21,6 +21,9 @@ version 2.63
been used, had very strange semantics, and have been
superceded by other mechanisms.
Fixed bug logging filenames when duplicate dhcp-host
addresses are found. Thanks to John Hanks for the patch.
version 2.62
Update German translation. Thanks to Conrad Kostecki.

34
src/dhcp-common.c
View File

@@ -246,40 +246,6 @@ int match_bytes(struct dhcp_opt *o, unsigned char *p, int len)
return 0;
}
void check_dhcp_hosts(int fatal)
{
/* If the same IP appears in more than one host config, then DISCOVER
for one of the hosts will get the address, but REQUEST will be NAKed,
since the address is reserved by the other one -> protocol loop.
Also check that FQDNs match the domain we are using. */
struct dhcp_config *configs, *cp;
for (configs = daemon->dhcp_conf; configs; configs = configs->next)
{
char *domain;
if ((configs->flags & DHOPT_BANK) || fatal)
{
for (cp = configs->next; cp; cp = cp->next)
if ((configs->flags & cp->flags & CONFIG_ADDR) && configs->addr.s_addr == cp->addr.s_addr)
{
if (fatal)
die(_("duplicate IP address %s in dhcp-config directive."),
inet_ntoa(cp->addr), EC_BADCONF);
else
my_syslog(MS_DHCP | LOG_ERR, _("duplicate IP address %s in %s."),
inet_ntoa(cp->addr), daemon->dhcp_hosts_file);
configs->flags &= ~CONFIG_ADDR;
}
/* split off domain part */
if ((configs->flags & CONFIG_NAME) && (domain = strip_hostname(configs->hostname)))
configs->domain = domain;
}
}
}
void dhcp_update_configs(struct dhcp_config *configs)
{
/* Some people like to keep all static IP addresses in /etc/hosts.

2
src/dhcp.c
View File

@@ -117,8 +117,6 @@ void dhcp_init(void)
/* Make BPF raw send socket */
init_bpf();
#endif
check_dhcp_hosts(1);
}
void dhcp_packet(time_t now, int pxe_fd)

1
src/dnsmasq.c
View File

@@ -1243,7 +1243,6 @@ void clear_cache_and_reload(time_t now)
dhcp_read_ethers();
reread_dhcp();
dhcp_update_configs(daemon->dhcp_conf);
check_dhcp_hosts(0);
lease_update_from_configs();
lease_update_file(now);
lease_update_dns(1);

1
src/dnsmasq.h
View File

@@ -1123,7 +1123,6 @@ char *strip_hostname(char *hostname);
void log_tags(struct dhcp_netid *netid, u32 xid);
int match_bytes(struct dhcp_opt *o, unsigned char *p, int len);
void dhcp_update_configs(struct dhcp_config *configs);
void check_dhcp_hosts(int fatal);
void display_opts(void);
u16 lookup_dhcp_opt(int prot, char *name);
u16 lookup_dhcp_len(int prot, u16 val);

338
src/option.c
View File

@@ -619,13 +619,15 @@ static char *set_prefix(char *arg)
return arg;
}
#define ret_err(x) do { strcpy(errstr, (x)); return 0; } while (0)
/* This is too insanely large to keep in-line in the switch */
static char *parse_dhcp_opt(char *arg, int flags)
static int parse_dhcp_opt(char *errstr, char *arg, int flags)
{
struct dhcp_opt *new = opt_malloc(sizeof(struct dhcp_opt));
char lenchar = 0, *cp;
int addrs, digs, is_addr, is_addr6, is_hex, is_dec, is_string, dots;
char *comma = NULL, *problem = NULL;
char *comma = NULL;
struct dhcp_netid *np = NULL;
u16 opt_len = 0;
int is6 = 0;
@@ -719,7 +721,7 @@ static char *parse_dhcp_opt(char *arg, int flags)
if (is6)
{
if (new->flags & (DHOPT_VENDOR | DHOPT_ENCAPSULATE))
problem = _("unsupported encapsulation for IPv6 option");
ret_err(_("unsupported encapsulation for IPv6 option"));
if (opt_len == 0 &&
!(new->flags & DHOPT_RFC3925))
@@ -733,8 +735,9 @@ static char *parse_dhcp_opt(char *arg, int flags)
/* option may be missing with rfc3925 match */
if (new->opt == 0)
problem = _("bad dhcp-option");
else if (comma)
ret_err(_("bad dhcp-option"));
if (comma)
{
/* characterise the value */
char c;
@@ -800,10 +803,10 @@ static char *parse_dhcp_opt(char *arg, int flags)
is_string = is_dec = is_hex = 0;
if (!is6 && (!is_addr || dots == 0))
problem = _("bad IP address");
ret_err(_("bad IP address"));
if (is6 && !is_addr6)
problem = _("bad IPv6 address");
ret_err(_("bad IPv6 address"));
}
/* or names */
else if (opt_len & (OT_NAME | OT_RFC1035_NAME | OT_CSTRING))
@@ -909,7 +912,7 @@ static char *parse_dhcp_opt(char *arg, int flags)
continue;
}
problem = _("bad IPv6 address");
ret_err(_("bad IPv6 address"));
}
new->len = op - new->val;
}
@@ -936,10 +939,8 @@ static char *parse_dhcp_opt(char *arg, int flags)
if (strcmp (arg, ".") != 0)
{
if (!(dom = canonicalise_opt(arg)))
{
problem = _("bad domain in dhcp-option");
break;
}
ret_err(_("bad domain in dhcp-option"));
domlen = strlen(dom) + 2;
}
@@ -1032,10 +1033,7 @@ static char *parse_dhcp_opt(char *arg, int flags)
{
char *dom = canonicalise_opt(arg);
if (!dom)
{
problem = _("bad domain in dhcp-option");
break;
}
ret_err(_("bad domain in dhcp-option"));
newp = opt_malloc(len + strlen(dom) + 2);
@@ -1073,17 +1071,16 @@ static char *parse_dhcp_opt(char *arg, int flags)
((new->len > 255) ||
(new->len > 253 && (new->flags & (DHOPT_VENDOR | DHOPT_ENCAPSULATE))) ||
(new->len > 250 && (new->flags & DHOPT_RFC3925))))
problem = _("dhcp-option too long");
ret_err(_("dhcp-option too long"));
if (!problem)
{
if (flags == DHOPT_MATCH)
{
if ((new->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR)) ||
!new->netid ||
new->netid->next)
problem = _("illegal dhcp-match");
else if (is6)
ret_err(_("illegal dhcp-match"));
if (is6)
{
new->next = daemon->dhcp_match6;
daemon->dhcp_match6 = new;
@@ -1104,9 +1101,8 @@ static char *parse_dhcp_opt(char *arg, int flags)
new->next = daemon->dhcp_opts;
daemon->dhcp_opts = new;
}
}
return problem;
return 1;
}
#endif
@@ -1127,13 +1123,13 @@ void reset_option_bool(unsigned int opt)
daemon->options2 &= ~(1u << (opt - 32));
}
static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
static int one_opt(int option, char *arg, char *errstr, char *gen_err, int command_line)
{
int i;
char *comma, *problem = NULL;;
char *comma;
if (option == '?')
return gen_prob;
ret_err(gen_err);
for (i=0; usage[i].opt != 0; i++)
if (usage[i].opt == option)
@@ -1144,7 +1140,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
/* command line */
if (rept == ARG_USED_CL)
return _("illegal repeated flag");
ret_err(_("illegal repeated flag"));
if (rept == ARG_ONE)
usage[i].rept = ARG_USED_CL;
}
@@ -1152,7 +1148,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
/* allow file to override command line */
if (rept == ARG_USED_FILE)
return _("illegal repeated keyword");
ret_err(_("illegal repeated keyword"));
if (rept == ARG_USED_CL || rept == ARG_ONE)
usage[i].rept = ARG_USED_FILE;
}
@@ -1160,7 +1156,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (rept != ARG_DUP && rept != ARG_ONE && rept != ARG_USED_CL)
{
set_option_bool(rept);
return NULL;
return 1;
}
break;
@@ -1264,7 +1260,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
else
{
#ifdef __ANDROID__
problem = _("setting log facility is not possible under Android");
ret_err(_("setting log facility is not possible under Android"));
#else
for (i = 0; facilitynames[i].c_name; i++)
if (hostname_isequal((char *)facilitynames[i].c_name, arg))
@@ -1273,7 +1269,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (facilitynames[i].c_name)
daemon->log_fac = facilitynames[i].c_val;
else
problem = _("bad log facility");
ret_err(_("bad log facility"));
#endif
}
break;
@@ -1322,12 +1318,12 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
char *prefstr;
if ((prefstr = split(comma)) && !atoi_check16(prefstr, &pref))
problem = _("bad MX preference");
ret_err(_("bad MX preference"));
}
if (!(name = canonicalise_opt(arg)) ||
(comma && !(target = canonicalise_opt(comma))))
problem = _("bad MX name");
ret_err(_("bad MX name"));
new = opt_malloc(sizeof(struct mx_srv_record));
new->next = daemon->mxnames;
@@ -1341,7 +1337,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
case 't': /* --mx-target */
if (!(daemon->mxtarget = canonicalise_opt(arg)))
problem = _("bad MX target");
ret_err(_("bad MX target"));
break;
#ifdef HAVE_DHCP
@@ -1353,13 +1349,13 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
case '6': /* --dhcp-script */
case LOPT_LUASCRIPT: /* --dhcp-luascript */
# if defined(NO_FORK)
problem = _("cannot run scripts under uClinux");
ret_err(_("cannot run scripts under uClinux"));
# elif !defined(HAVE_SCRIPT)
problem = _("recompile with HAVE_SCRIPT defined to enable lease-change scripts");
ret_err(_("recompile with HAVE_SCRIPT defined to enable lease-change scripts"));
# else
if (option == LOPT_LUASCRIPT)
# if !defined(HAVE_LUASCRIPT)
problem = _("recompile with HAVE_LUASCRIPT defined to enable Lua scripts");
ret_err(_("recompile with HAVE_LUASCRIPT defined to enable Lua scripts"));
# else
daemon->luascript = opt_string_alloc(arg);
# endif
@@ -1404,7 +1400,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
char *d;
comma = split(arg);
if (!(d = canonicalise_opt(arg)))
option = '?';
ret_err(gen_err);
else
{
if (comma)
@@ -1419,7 +1415,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
arg = split(netpart);
if (!atoi_check(netpart, &msize))
option = '?';
ret_err(gen_err);
else if (inet_pton(AF_INET, comma, &new->start))
{
int mask = (1 << (32 - msize)) - 1;
@@ -1434,7 +1430,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (strcmp(arg, "local") != 0 ||
(msize != 8 && msize != 16 && msize != 24))
option = '?';
ret_err(gen_err);
else
{
struct server *serv = opt_malloc(sizeof(struct server));
@@ -1481,7 +1477,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
setaddr6part(&new->end6, addrpart | mask);
if (msize < 64)
option = '?';
ret_err(gen_err);
else if (arg)
{
/* generate the equivalent of
@@ -1489,7 +1485,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
local=/xxx.yyy.zzz.ip6.arpa/ */
if (strcmp(arg, "local") != 0 || ((msize & 4) != 0))
option = '?';
ret_err(gen_err);
else
{
struct server *serv = opt_malloc(sizeof(struct server));
@@ -1520,7 +1516,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
#endif
else
option = '?';
ret_err(gen_err);
}
else
{
@@ -1531,7 +1527,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (!arg)
new->end.s_addr = new->start.s_addr;
else if (!inet_pton(AF_INET, arg, &new->end))
option = '?';
ret_err(gen_err);
}
#ifdef HAVE_IPV6
else if (inet_pton(AF_INET6, comma, &new->start6))
@@ -1540,11 +1536,11 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (!arg)
memcpy(&new->end6, &new->start6, IN6ADDRSZ);
else if (!inet_pton(AF_INET6, arg, &new->end6))
option = '?';
ret_err(gen_err);
}
#endif
else
option = '?';
ret_err(gen_err);
}
new->domain = d;
@@ -1618,7 +1614,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
baddr->addr = addr;
}
else
option = '?'; /* error */
ret_err(gen_err); /* error */
break;
}
@@ -1647,10 +1643,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
#endif
else
{
option = '?'; /* error */
break;
}
ret_err(gen_err);
new->used = 0;
daemon->if_addrs = new;
@@ -1694,11 +1687,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
break;
}
if (!newlist)
{
option = '?';
break;
}
ret_err(gen_err);
}
else
{
@@ -1710,7 +1699,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
newlist->flags |= SERV_LITERAL_ADDRESS;
if (!(newlist->flags & SERV_TYPE))
option = '?';
ret_err(gen_err);
}
else if (option == LOPT_NO_REBIND)
newlist->flags |= SERV_NO_REBIND;
@@ -1720,14 +1709,14 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (!(newlist->flags & SERV_NO_REBIND))
newlist->flags |= SERV_NO_ADDR; /* no server */
if (newlist->flags & SERV_LITERAL_ADDRESS)
option = '?';
ret_err(gen_err);
}
else if (strcmp(arg, "#") == 0)
{
newlist->flags |= SERV_USE_RESOLV; /* treat in ordinary way */
if (newlist->flags & SERV_LITERAL_ADDRESS)
option = '?';
ret_err(gen_err);
}
else
{
@@ -1741,11 +1730,11 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if ((source = split_chr(arg, '@')) && /* is there a source. */
(portno = split_chr(source, '#')) &&
!atoi_check16(portno, &source_port))
problem = _("bad port");
ret_err(_("bad port"));
if ((portno = split_chr(arg, '#')) && /* is there a port no. */
!atoi_check16(portno, &serv_port))
problem = _("bad port");
ret_err(_("bad port"));
#ifdef HAVE_IPV6
scope_id = split_chr(arg, '%');
@@ -1768,7 +1757,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
newlist->source_addr.in.sin_addr.s_addr = INADDR_ANY;
strncpy(newlist->interface, source, IF_NAMESIZE - 1);
#else
problem = _("interface binding not supported");
ret_err(_("interface binding not supported"));
#endif
}
}
@@ -1779,7 +1768,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
else if (inet_pton(AF_INET6, arg, &newlist->addr.in6.sin6_addr) > 0)
{
if (scope_id && (scope_index = if_nametoindex(scope_id)) == 0)
problem = _("bad interface name");
ret_err(_("bad interface name"));
newlist->addr.in6.sin6_port = htons(serv_port);
newlist->addr.in6.sin6_scope_id = scope_index;
@@ -1799,7 +1788,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
newlist->source_addr.in6.sin6_addr = in6addr_any;
strncpy(newlist->interface, source, IF_NAMESIZE - 1);
#else
problem = _("interface binding not supported");
ret_err(_("interface binding not supported"));
#endif
}
}
@@ -1808,7 +1797,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
#endif
else
option = '?'; /* error */
ret_err(gen_err);
}
serv = newlist;
@@ -1829,7 +1818,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
int size;
if (!atoi_check(arg, &size))
option = '?';
ret_err(gen_err);
else
{
/* zero is OK, and means no caching. */
@@ -1846,23 +1835,23 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
case 'p': /* --port */
if (!atoi_check16(arg, &daemon->port))
option = '?';
ret_err(gen_err);
break;
case LOPT_MINPORT: /* --min-port */
if (!atoi_check16(arg, &daemon->min_port))
option = '?';
ret_err(gen_err);
break;
case '0': /* --dns-forward-max */
if (!atoi_check(arg, &daemon->ftabsize))
option = '?';
ret_err(gen_err);
break;
case LOPT_MAX_LOGS: /* --log-async */
daemon->max_logs = LOG_MAX; /* default */
if (arg && !atoi_check(arg, &daemon->max_logs))
option = '?';
ret_err(gen_err);
else if (daemon->max_logs > 100)
daemon->max_logs = 100;
break;
@@ -1871,14 +1860,14 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
int i;
if (!atoi_check(arg, &i))
option = '?';
ret_err(gen_err);
daemon->edns_pktsz = (unsigned short)i;
break;
}
case 'Q': /* --query-port */
if (!atoi_check16(arg, &daemon->query_port))
option = '?';
ret_err(gen_err);
/* if explicitly set to zero, use single OS ephemeral port
and disable random ports */
if (daemon->query_port == 0)
@@ -1891,7 +1880,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
int ttl;
if (!atoi_check(arg, &ttl))
option = '?';
ret_err(gen_err);
else if (option == LOPT_NEGTTL)
daemon->neg_ttl = (unsigned long)ttl;
else if (option == LOPT_MAXTTL)
@@ -1904,14 +1893,14 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
#ifdef HAVE_DHCP
case 'X': /* --dhcp-lease-max */
if (!atoi_check(arg, &daemon->dhcp_max))
option = '?';
ret_err(gen_err);
break;
#endif
#ifdef HAVE_TFTP
case LOPT_TFTP_MAX: /* --tftp-max */
if (!atoi_check(arg, &daemon->tftp_max))
option = '?';
ret_err(gen_err);
break;
case LOPT_PREFIX: /* --tftp-prefix */
@@ -1932,7 +1921,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (!(comma = split(arg)) ||
!atoi_check16(arg, &daemon->start_tftp_port) ||
!atoi_check16(comma, &daemon->end_tftp_port))
problem = _("bad port range");
ret_err(_("bad port range"));
if (daemon->start_tftp_port > daemon->end_tftp_port)
{
@@ -1948,10 +1937,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
struct dhcp_bridge *new = opt_malloc(sizeof(struct dhcp_bridge));
if (!(comma = split(arg)) || strlen(arg) > IF_NAMESIZE - 1 )
{
problem = _("bad bridge-interface");
break;
}
ret_err(_("bad bridge-interface"));
strcpy(new->iface, arg);
new->alias = NULL;
@@ -1983,8 +1969,6 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
memset (new, 0, sizeof(*new));
new->lease_time = DEFLEASE;
gen_prob = _("bad dhcp-range");
if (!arg)
{
option = '?';
@@ -2011,7 +1995,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
else
{
if (new->netid.net)
problem = _("only one tag allowed");
ret_err(_("only one tag allowed"));
else if (strstr(arg, "set:") == arg)
new->netid.net = opt_string_alloc(arg+4);
else
@@ -2031,8 +2015,9 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
break;
if (k < 2)
option = '?';
else if (inet_pton(AF_INET, a[0], &new->start))
ret_err(_("bad dhcp-range"));
if (inet_pton(AF_INET, a[0], &new->start))
{
new->next = daemon->dhcp;
daemon->dhcp = new;
@@ -2042,7 +2027,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
else if (strcmp(a[1], "proxy") == 0)
new->flags |= CONTEXT_PROXY;
else if (!inet_pton(AF_INET, a[1], &new->end))
option = '?';
ret_err(_("bad dhcp-range"));
if (ntohl(new->start.s_addr) > ntohl(new->end.s_addr))
{
@@ -2051,13 +2036,13 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
new->end = tmp;
}
if (option != '?' && k >= 3 && strchr(a[2], '.') &&
if (k >= 3 && strchr(a[2], '.') &&
((new->netmask.s_addr = inet_addr(a[2])) != (in_addr_t)-1))
{
new->flags |= CONTEXT_NETMASK;
leasepos = 3;
if (!is_same_net(new->start, new->end, new->netmask))
problem = _("inconsistent DHCP range");
ret_err(_("inconsistent DHCP range"));
}
if (k >= 4 && strchr(a[3], '.') &&
@@ -2101,7 +2086,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
/* bare integer < 128 is prefix value */
if (option != '?' && leasepos < k)
if (leasepos < k)
{
int pref;
for (cp = a[leasepos]; *cp; cp++)
@@ -2113,15 +2098,15 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
leasepos++;
if ((new->flags & (CONTEXT_RA_ONLY | CONTEXT_RA_NAME | CONTEXT_RA_STATELESS)) &&
new->prefix != 64)
problem = _("prefix must be exactly 64 for RA subnets");
ret_err(_("prefix must be exactly 64 for RA subnets"));
else if (new->prefix < 64)
problem = _("prefix must be at least 64");
ret_err(_("prefix must be at least 64"));
}
}
if (!problem && !is_same_net6(&new->start6, &new->end6, new->prefix))
problem = _("inconsistent DHCPv6 range");
else if (addr6part(&new->start6) > addr6part(&new->end6))
if (!is_same_net6(&new->start6, &new->end6, new->prefix))
ret_err(_("inconsistent DHCPv6 range"));
if (addr6part(&new->start6) > addr6part(&new->end6))
{
struct in6_addr tmp = new->start6;
new->start6 = new->end6;
@@ -2216,7 +2201,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (len == -1)
problem = _("bad hex constant");
ret_err(_("bad hex constant"));
else if ((new->clid = opt_malloc(len)))
{
new->flags |= CONFIG_CLID;
@@ -2238,7 +2223,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
unhide_metas(newtag->net);
}
else if (strstr(arg, "tag:") == arg)
problem = _("cannot match tags in --dhcp-host");
ret_err(_("cannot match tags in --dhcp-host"));
#ifdef HAVE_DHCP6
else if (arg[0] == '[' && arg[strlen(arg)-1] == ']')
{
@@ -2246,7 +2231,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
arg++;
if (!inet_pton(AF_INET6, arg, &new->addr6))
problem = _("bad IPv6 address");
ret_err(_("bad IPv6 address"));
new->flags |= CONFIG_ADDR6;
}
@@ -2256,7 +2241,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
struct hwaddr_config *newhw = opt_malloc(sizeof(struct hwaddr_config));
if ((newhw->hwaddr_len = parse_hex(a[j], newhw->hwaddr, DHCP_CHADDR_MAX,
&newhw->wildcard_mask, &newhw->hwaddr_type)) == -1)
problem = _("bad hex constant");
ret_err(_("bad hex constant"));
else
{
@@ -2267,8 +2252,20 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
else if (strchr(a[j], '.') && (in.s_addr = inet_addr(a[j])) != (in_addr_t)-1)
{
struct dhcp_config *configs;
new->addr = in;
new->flags |= CONFIG_ADDR;
/* If the same IP appears in more than one host config, then DISCOVER
for one of the hosts will get the address, but REQUEST will be NAKed,
since the address is reserved by the other one -> protocol loop. */
for (configs = daemon->dhcp_conf; configs; configs = configs->next)
if ((configs->flags & CONFIG_ADDR) && configs->addr.s_addr == in.s_addr)
{
sprintf(errstr, _("duplicate dhcp-host IP address %s"), inet_ntoa(in));
return 0;
}
}
else
{
@@ -2318,10 +2315,10 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
{
if (!(new->hostname = canonicalise_opt(a[j])) ||
!legal_hostname(new->hostname))
problem = _("bad DHCP host name");
else
ret_err(_("bad DHCP host name"));
new->flags |= CONFIG_NAME;
new->domain = NULL;
new->domain = strip_hostname(new->hostname);
}
}
else
@@ -2399,7 +2396,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
if (!new->set)
problem = _("bad tag-if");
ret_err(_("bad tag-if"));
break;
}
@@ -2409,11 +2406,10 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
case LOPT_FORCE: /* --dhcp-option-force */
case LOPT_OPTS:
case LOPT_MATCH: /* --dhcp-match */
problem = parse_dhcp_opt(arg,
return parse_dhcp_opt(errstr, arg,
option == LOPT_FORCE ? DHOPT_FORCE :
(option == LOPT_MATCH ? DHOPT_MATCH :
(option == LOPT_OPTS ? DHOPT_BANK : 0)));
break;
case 'M': /* --dhcp-boot */
{
@@ -2429,11 +2425,12 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
};
if (!arg)
option = '?';
ret_err(gen_err);
else
{
char *dhcp_file, *dhcp_sname = NULL, *tftp_sname = NULL;
struct in_addr dhcp_next_server;
struct dhcp_boot *new;
comma = split(arg);
dhcp_file = opt_string_alloc(arg);
dhcp_next_server.s_addr = 0;
@@ -2458,9 +2455,8 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
}
}
if (option != '?')
{
struct dhcp_boot *new = opt_malloc(sizeof(struct dhcp_boot));
new = opt_malloc(sizeof(struct dhcp_boot));
new->file = dhcp_file;
new->sname = dhcp_sname;
new->tftp_sname = tftp_sname;
@@ -2469,7 +2465,6 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
new->next = daemon->boot_config;
daemon->boot_config = new;
}
}
break;
}
@@ -2493,7 +2488,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
if (!arg)
option = '?';
ret_err(gen_err);
else
{
comma = split(arg);
@@ -2601,14 +2596,13 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
}
option = '?';
break;
ret_err(gen_err);
}
case '4': /* --dhcp-mac */
{
if (!(comma = split(arg)))
option = '?';
ret_err(gen_err);
else
{
struct dhcp_mac *new = opt_malloc(sizeof(struct dhcp_mac));
@@ -2616,7 +2610,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
unhide_metas(comma);
new->hwaddr_len = parse_hex(comma, new->hwaddr, DHCP_CHADDR_MAX, &new->mask, &new->hwaddr_type);
if (new->hwaddr_len == -1)
option = '?';
ret_err(gen_err);
else
{
new->next = daemon->dhcp_macs;
@@ -2631,14 +2625,14 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
case LOPT_CIRCUIT: /* --dhcp-circuitid */
case LOPT_REMOTE: /* --dhcp-remoteid */
case LOPT_SUBSCR: /* --dhcp-subscrid */
{
if (!(comma = split(arg)))
option = '?';
else
{
unsigned char *p;
int dig = 0;
struct dhcp_vendor *new = opt_malloc(sizeof(struct dhcp_vendor));
if (!(comma = split(arg)))
ret_err(gen_err);
new->netid.net = opt_string_alloc(set_prefix(arg));
/* check for hex string - must digits may include : must not have nothing else,
only allowed for agent-options. */
@@ -2647,7 +2641,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if ((comma = split(arg)))
{
if (option != 'U' || strstr(arg, "enterprise:") != arg)
option = '?';
ret_err(gen_err);
else
new->enterprise = atoi(arg+11);
}
@@ -2693,7 +2687,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
new->next = daemon->dhcp_vendors;
daemon->dhcp_vendors = new;
}
break;
}
@@ -2708,7 +2702,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
comma = split(arg);
if (!atoi_check16(arg, &daemon->dhcp_server_port) ||
(comma && !atoi_check16(comma, &daemon->dhcp_client_port)))
problem = _("invalid port number");
ret_err(_("invalid port number"));
if (!comma)
daemon->dhcp_client_port = daemon->dhcp_server_port+1;
}
@@ -2770,7 +2764,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
struct addr_list *new = opt_malloc(sizeof(struct addr_list));
comma = split(arg);
if ((new->addr.s_addr = inet_addr(arg)) == (in_addr_t)-1)
problem = _("bad dhcp-proxy address");
ret_err(_("bad dhcp-proxy address"));
new->next = daemon->override_relays;
daemon->override_relays = new;
arg = comma;
@@ -2781,7 +2775,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
#ifdef HAVE_DHCP6
case LOPT_DUID: /* --dhcp-duid */
if (!(comma = split(arg)) || !atoi_check(arg, (int *)&daemon->duid_enterprise))
problem = _("bad DUID");
ret_err(_("bad DUID"));
else
{
daemon->duid_config_len = parse_hex(comma,(unsigned char *)comma, strlen(comma), NULL, NULL);
@@ -2823,7 +2817,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
((new->end.s_addr = inet_addr(dash)) == (in_addr_t)-1 ||
!is_same_net(new->in, new->end, new->mask) ||
ntohl(new->in.s_addr) > ntohl(new->end.s_addr)))
problem = _("invalid alias range");
ret_err(_("invalid alias range"));
break;
}
@@ -2836,7 +2830,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
comma = split(arg);
if (!comma || !(domain = canonicalise_opt(arg)))
problem = _("bad interface name");
ret_err(_("bad interface name"));
new = opt_malloc(sizeof(struct interface_name));
new->next = NULL;
@@ -2852,28 +2846,29 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
case LOPT_CNAME: /* --cname */
{
struct cname *new;
char *alias;
char *target;
if (!(comma = split(arg)))
option = '?';
else
{
char *alias = canonicalise_opt(arg);
char *target = canonicalise_opt(comma);
ret_err(gen_err);
alias = canonicalise_opt(arg);
target = canonicalise_opt(comma);
if (!alias || !target)
problem = _("bad CNAME");
ret_err(_("bad CNAME"));
else
{
for (new = daemon->cnames; new; new = new->next)
if (hostname_isequal(new->alias, arg))
problem = _("duplicate CNAME");
ret_err(_("duplicate CNAME"));
new = opt_malloc(sizeof(struct cname));
new->next = daemon->cnames;
daemon->cnames = new;
new->alias = alias;
new->target = target;
}
}
break;
}
@@ -2886,7 +2881,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (!(dom = canonicalise_opt(arg)) ||
(comma && !(target = canonicalise_opt(comma))))
problem = _("bad PTR record");
ret_err(_("bad PTR record"));
else
{
new = opt_malloc(sizeof(struct ptr_record));
@@ -2917,7 +2912,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
!atoi_check16(a[1], &order) ||
!atoi_check16(a[2], &pref) ||
(k == 7 && !(replace = canonicalise_opt(a[6]))))
problem = _("bad NAPTR record");
ret_err(_("bad NAPTR record"));
else
{
new = opt_malloc(sizeof(struct naptr));
@@ -2951,10 +2946,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
if (!atoi_check(comma, &val) ||
!(new->name = canonicalise_opt(arg)) ||
(data && (len = parse_hex(data, (unsigned char *)data, -1, NULL, NULL)) == -1U))
{
problem = _("bad RR record");
break;
}
ret_err(_("bad RR record"));
new->class = val;
new->len = 0;
@@ -2983,10 +2975,7 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
new->class = C_IN;
if (!(new->name = canonicalise_opt(arg)))
{
problem = _("bad TXT record");
break;
}
ret_err(_("bad TXT record"));
len = comma ? strlen(comma) : 0;
len += (len/255) + 1; /* room for extra counts */
@@ -3027,35 +3016,35 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
comma = split(arg);
if (!(name = canonicalise_opt(arg)))
problem = _("bad SRV record");
ret_err(_("bad SRV record"));
if (comma)
{
arg = comma;
comma = split(arg);
if (!(target = canonicalise_opt(arg))
) problem = _("bad SRV target");
if (!(target = canonicalise_opt(arg)))
ret_err(_("bad SRV target"));
if (comma)
{
arg = comma;
comma = split(arg);
if (!atoi_check16(arg, &port))
problem = _("invalid port number");
ret_err(_("invalid port number"));
if (comma)
{
arg = comma;
comma = split(arg);
if (!atoi_check16(arg, &priority))
problem = _("invalid priority");
ret_err(_("invalid priority"));
if (comma)
{
arg = comma;
comma = split(arg);
if (!atoi_check16(arg, &weight))
problem = _("invalid weight");
ret_err(_("invalid weight"));
}
}
}
@@ -3079,8 +3068,8 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
memset(new, 0, sizeof(struct host_record));
if (!arg || !(comma = split(arg)))
problem = _("Bad host-record");
else
ret_err(_("Bad host-record"));
while (arg)
{
struct all_addr addr;
@@ -3096,10 +3085,8 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
char *canon = canonicalise(arg, &nomem);
struct name_list *nl = opt_malloc(sizeof(struct name_list));
if (!canon)
{
problem = _("Bad name in host-record");
break;
}
ret_err(_("Bad name in host-record"));
nl->name = canon;
/* keep order, so that PTR record goes to first name */
nl->next = NULL;
@@ -3111,10 +3098,11 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
for (tmp = new->names; tmp->next; tmp = tmp->next);
tmp->next = nl;
}
}
arg = comma;
comma = split(arg);
}
}
/* Keep list order */
if (!daemon->host_records_tail)
@@ -3127,17 +3115,11 @@ static char *one_opt(int option, char *arg, char *gen_prob, int command_line)
}
default:
return _("unsupported option (check that dnsmasq was compiled with DHCP/TFTP/DBus support)");
ret_err(_("unsupported option (check that dnsmasq was compiled with DHCP/TFTP/DBus support)"));
}
if (problem)
return problem;
if (option == '?')
return gen_prob;
return NULL;
return 1;
}
static void read_file(char *file, FILE *f, int hard_opt)
@@ -3257,17 +3239,17 @@ static void read_file(char *file, FILE *f, int hard_opt)
errmess = _("missing parameter");
}
if (!errmess)
errmess = one_opt(option, arg, _("error"), 0);
if (errmess)
{
oops:
sprintf(buff, _("%s at line %d of %%s"), errmess, lineno);
if (errmess)
strcpy(daemon->namebuff, errmess);
if (errmess || !one_opt(option, arg, buff, _("error"), 0))
{
sprintf(daemon->namebuff + strlen(daemon->namebuff), _(" at line %d of %s"), lineno, file);
if (hard_opt != 0)
my_syslog(LOG_ERR, buff, file);
my_syslog(LOG_ERR, "%s", daemon->namebuff);
else
die(buff, file, EC_BADCONF);
die("%s", daemon->namebuff, EC_BADCONF);
}
}
@@ -3540,7 +3522,7 @@ void read_opts(int argc, char **argv, char *compile_opts)
{
char *buff = opt_malloc(MAXDNAME);
int option, conffile_opt = '7', testmode = 0;
char *errmess, *arg, *conffile = CONFFILE;
char *arg, *conffile = CONFFILE;
opterr = 0;
@@ -3632,12 +3614,11 @@ void read_opts(int argc, char **argv, char *compile_opts)
else
{
#ifdef HAVE_GETOPT_LONG
errmess = one_opt(option, arg, _("try --help"), 1);
if (!one_opt(option, arg, daemon->namebuff, _("try --help"), 1))
#else
errmess = one_opt(option, arg, _("try -w"), 1);
if (!one_opt(option, arg, daemon->namebuff, _("try -w"), 1))
#endif
if (errmess)
die(_("bad command line options: %s"), errmess, EC_BADCONF);
die(_("bad command line options: %s"), daemon->namebuff, EC_BADCONF);
}
}
@@ -3761,9 +3742,6 @@ void read_opts(int argc, char **argv, char *compile_opts)
if (testmode)
{
/* Can cause a call to die() */
check_dhcp_hosts(1);
fprintf(stderr, "dnsmasq: %s.\n", _("syntax check OK"));
exit(0);
}