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import of dnsmasq-2.6.tar.gz

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This commit is contained in:
Simon Kelley
2004-04-03 21:10:00 +01:00
parent 8a911ccc75
commit 33820b7ed9
16 changed files with 865 additions and 365 deletions
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298
src/option.c
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@@ -161,10 +161,10 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
{
int option = 0, i;
unsigned int flags = 0;
FILE *f = NULL;
char *conffile = CONFFILE;
FILE *file_save = NULL, *f = NULL;
char *file_name_save = NULL, *conffile = CONFFILE;
int conffile_set = 0;
int lineno = 0;
int line_save = 0, lineno = 0;
opterr = 0;
*min_leasetime = UINT_MAX;
@@ -179,26 +179,38 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
#endif
else
{ /* f non-NULL, reading from conffile. */
reread:
if (!fgets(buff, MAXDNAME, f))
{
/* At end of file, all done */
fclose(f);
if (file_save)
{
/* may be nested */
conffile = file_name_save;
f = file_save;
file_save = NULL;
lineno = line_save;
goto reread;
}
break;
}
else
{
char *p;
int white;
lineno++;
/* dump comments */
for (p = buff; *p; p++)
if (*p == '#')
*p = 0;
for (white = 1, p = buff; *p; p++)
if (white && *p == '#')
{
*p = 0;
break;
}
else
white = isspace(*p);
/* fgets gets end of line char too. */
while (strlen(buff) > 0 &&
(buff[strlen(buff)-1] == '\n' ||
buff[strlen(buff)-1] == ' ' ||
buff[strlen(buff)-1] == '\r' ||
buff[strlen(buff)-1] == '\t'))
while (strlen(buff) > 0 && isspace(buff[strlen(buff)-1]))
buff[strlen(buff)-1] = 0;
if (*buff == 0)
continue;
@@ -227,6 +239,7 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
{ /* end of command line args, start reading conffile. */
if (!conffile)
break; /* "confile=" option disables */
fileopen:
option = 0;
if (!(f = fopen(conffile, "r")))
{
@@ -274,9 +287,27 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
switch (option)
{
case 'C':
if (!f)
{
conffile = safe_string_alloc(optarg);
conffile_set = 1;
break;
}
/* nest conffiles one deep */
if (file_save)
{
sprintf(buff, "nested includes not allowed at line %d of %s ", lineno, conffile);
complain(buff, NULL);
continue;
}
file_name_save = conffile;
file_save = f;
line_save = lineno;
conffile = safe_string_alloc(optarg);
conffile_set = 1;
break;
lineno = 0;
goto fileopen;
case 'x':
*runfile = safe_string_alloc(optarg);
@@ -643,11 +674,15 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
*(a[k]++) = 0;
}
if ((k < 2) ||
((new->start.s_addr = inet_addr(a[0])) == (in_addr_t)-1) ||
((new->end.s_addr = inet_addr(a[1])) == (in_addr_t)-1))
if ((k < 2) || ((new->start.s_addr = inet_addr(a[0])) == (in_addr_t)-1))
option = '?';
else if (strcmp(a[1], "static") == 0)
new->end = new->start;
else if ((new->end.s_addr = inet_addr(a[1])) == (in_addr_t)-1)
option = '?';
if (option == '?')
{
option = '?';
free(new);
break;
}
@@ -700,22 +735,17 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
case 'G':
{
int j, k;
char *a[4] = { NULL, NULL, NULL, NULL };
char *a[6] = { NULL, NULL, NULL, NULL, NULL, NULL };
unsigned int e0, e1, e2, e3, e4, e5;
struct dhcp_config *new = safe_malloc(sizeof(struct dhcp_config));
struct in_addr in;
new->next = *dhcp_conf;
memset(new->hwaddr, 0, ETHER_ADDR_LEN);
new->clid_len = 0;
new->clid = NULL;
new->hostname = NULL;
new->addr.s_addr = 0;
new->lease_time = 0;
new->flags = 0;
a[0] = optarg;
for (k = 1; k < 4; k++)
for (k = 1; k < 6; k++)
{
if (!(a[k] = strchr(a[k-1], ',')))
break;
@@ -723,37 +753,60 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
}
for(j = 0; j < k; j++)
if (strchr(a[j], ':')) /* ethernet address or binary CLID */
if (strchr(a[j], ':')) /* ethernet address, netid or binary CLID */
{
char *arg = a[j];
if ((arg[0] == 'i' || arg[0] == 'I') &&
(arg[1] == 'd' || arg[1] == 'D') &&
arg[2] == ':')
{
int s, len;
int len;
arg += 3; /* dump id: */
if (strchr(arg, ':'))
{
s = (strlen(arg)/3) + 1;
/* decode in place */
for (len = 0; len < s; len++)
/* decode hex in place */
char *p = arg, *q = arg, *r;
while (*p)
{
if (arg[(len*3)+2] != ':')
option = '?';
arg[(len*3)+2] = 0;
arg[len] = strtol(&arg[len*3], NULL, 16);
for (r = p; *r && *r != ':'; r++);
if (*r)
{
if (r != p)
{
*r = 0;
*(q++) = strtol(p, NULL, 16);
}
p = r+1;
}
else
{
if (*p)
*(q++) = strtol(p, NULL, 16);
break;
}
}
len = q - arg;
}
else
len = strlen(arg);
new->flags |= CONFIG_CLID;
new->clid_len = len;
new->clid = safe_malloc(len);
memcpy(new->clid, arg, len);
}
else if ((arg[0] == 'n' || arg[0] == 'N') &&
(arg[1] == 'e' || arg[1] == 'E') &&
(arg[2] == 't' || arg[3] == 'T') &&
arg[3] == ':')
{
new->flags |= CONFIG_NETID;
new->netid = safe_string_alloc(arg+4);
}
else if (sscanf(a[j], "%x:%x:%x:%x:%x:%x",
&e0, &e1, &e2, &e3, &e4, &e5) == 6)
{
new->flags |= CONFIG_HWADDR;
new->hwaddr[0] = e0;
new->hwaddr[1] = e1;
new->hwaddr[2] = e2;
@@ -765,7 +818,10 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
option = '?';
}
else if (strchr(a[j], '.') && (in.s_addr = inet_addr(a[j])) != (in_addr_t)-1)
new->addr = in;
{
new->addr = in;
new->flags |= CONFIG_ADDR;
}
else
{
char *cp, *lastp = NULL, last = 0;
@@ -800,19 +856,38 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
if (lastp)
*lastp = last;
if (strcmp(a[j], "infinite") == 0)
new->lease_time = 0xffffffff;
{
new->lease_time = 0xffffffff;
new->flags |= CONFIG_TIME;
}
else if (strcmp(a[j], "ignore") == 0)
new->flags |= CONFIG_DISABLE;
else
new->hostname = safe_string_alloc(a[j]);
{
new->hostname = safe_string_alloc(a[j]);
new->flags |= CONFIG_NAME;
}
}
else
new->lease_time = atoi(a[j]) * fac;
{
new->lease_time = atoi(a[j]) * fac;
new->flags |= CONFIG_TIME;
}
}
if (option == '?')
free(new);
{
if (new->flags & CONFIG_NAME)
free(new->hostname);
if (new->flags & CONFIG_CLID)
free(new->clid);
if (new->flags & CONFIG_NETID)
free(new->netid);
free(new);
}
else
{
if (new->lease_time < *min_leasetime)
if ((new->flags & CONFIG_TIME) && new->lease_time < *min_leasetime)
*min_leasetime = new->lease_time;
*dhcp_conf = new;
}
@@ -823,7 +898,7 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
{
struct dhcp_opt *new = safe_malloc(sizeof(struct dhcp_opt));
char *cp, *comma;
int addrs, is_addr;
int addrs, digs, is_addr, is_hex, is_dec;
new->next = *dhcp_opts;
new->len = 0;
@@ -853,58 +928,113 @@ unsigned int read_opts (int argc, char **argv, char *buff, struct resolvc **reso
free(new);
break;
}
*dhcp_opts = new;
if (!comma)
{
*dhcp_opts = new;
break;
}
/* check for non-address list characters */
for (addrs = 1, is_addr = 0, cp = comma+1; *cp; cp++)
break;
/* characterise the value */
is_addr = is_hex = is_dec = 1;
addrs = digs = 1;
for (cp = comma+1; *cp; cp++)
if (*cp == ',')
addrs++;
else if (!(*cp == '.' || *cp == ' ' || (*cp >='0' && *cp <= '9')))
break;
{
addrs++;
is_dec = is_hex = 0;
}
else if (*cp == ':')
{
digs++;
is_dec = is_addr = 0;
}
else if (*cp == '.')
is_addr = 1;
if (*cp)
is_dec = is_hex = 0;
else if (!(*cp >='0' && *cp <= '9'))
{
is_dec = is_addr = 0;
if (!((*cp >='A' && *cp <= 'F') ||
(*cp >='a' && *cp <= 'F')))
is_hex = 0;
}
if (is_hex && digs > 1)
{
char *p = comma+1, *q, *r;
new->len = digs;
q = new->val = safe_malloc(new->len);
while (*p)
{
for (r = p; *r && *r != ':'; r++);
if (*r)
{
if (r != p)
{
*r = 0;
*(q++) = strtol(p, NULL, 16);
}
p = r+1;
}
else
{
if (*p)
*(q++) = strtol(p, NULL, 16);
break;
}
}
}
else if (is_dec)
{
/* Given that we don't know the length,
this applaing hack is the best available */
unsigned int val = atoi(comma+1);
if (val < 256)
{
new->len = 1;
new->val = safe_malloc(1);
*(new->val) = val;
}
else if (val < 65536)
{
new->len = 2;
new->val = safe_malloc(2);
*(new->val) = val>>8;
*(new->val+1) = val;
}
else
{
new->len = 4;
new->val = safe_malloc(4);
*(new->val) = val>>24;
*(new->val+1) = val>>16;
*(new->val+2) = val>>8;
*(new->val+3) = val;
}
}
else if (is_addr)
{
struct in_addr in;
unsigned char *op;
new->len = INADDRSZ * addrs;
new->val = op = safe_malloc(new->len);
new->is_addr = 1;
while (addrs--)
{
cp = comma;
if ((comma = strchr(cp+1, ',')))
*comma = 0;
in.s_addr = inet_addr(cp+1);
memcpy(op, &in, INADDRSZ);
op += INADDRSZ;
}
}
else
{
/* text arg */
new->len = strlen(comma+1);
new->val = safe_malloc(new->len);
memcpy(new->val, comma+1, new->len);
}
else
{
struct in_addr in;
unsigned char *op;
if (addrs == 1 && !is_addr)
{
new->len = 1;
new->val = safe_malloc(1);
*(new->val) = atoi(comma+1);
}
else
{
new->len = INADDRSZ * addrs;
new->val = op = safe_malloc(new->len);
new->is_addr = 1;
while (addrs--)
{
cp = comma;
if (cp && (comma = strchr(cp+1, ',')))
*comma = 0;
if (cp && (in.s_addr = inet_addr(cp+1)) == (in_addr_t)-1)
option = '?';
memcpy(op, &in, INADDRSZ);
op += INADDRSZ;
}
}
}
*dhcp_opts = new;
break;
}