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121 lines
2.2 KiB
121 lines
2.2 KiB
23 years ago
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/*
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netcfg.c : Configures the network
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*/
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#define IP4_ADDR_SZ (4)
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struct ip4_addr
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{
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int i[IP4_ADDR_SZ];
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}
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ip4_addr_t;
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char *host = NULL;
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char *domain = NULL;
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ip4_addr_t ipaddr = { {192, 168, 1, 1} };
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ip4_addr_t netmask = { {255, 255, 255, 0} };
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ip4_addr_t network = { {192, 168, 1, 0} };
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ip4_addr_t broadcast = { {192, 168, 1, 255} };
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ip4_addr_t gateway = { {0, 0, 0, 0} };
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/*
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* Checks a string with an IPv4-address for validity and converts it into an
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* ip4_addr_t type;
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*/
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int
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atoIP4 (char *addr, ip4_addr_t * iaddr)
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{
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char *end;
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char *tmp_a;
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char *current = strdup (addr);
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char *next = NULL;
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int ix = 0;
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int tmp;
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tmp_a = current;
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end = current + strlen (current) + 1;
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while (next != end)
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{
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next = strchr (current, '.');
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if (next == NULL)
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next = end;
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else
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{
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*next = '\0';
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next++;
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}
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if (ix == IP4_ADDR_SZ)
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{
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free (tmp_a);
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return 255;
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}
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else
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{
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tmp = atoi (current);
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if ((tmp < 0) || (tmp > 255))
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{
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free (tmp_a);
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return 255;
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}
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iaddr->i[ix++] = tmp;
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current = next;
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}
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}
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free (tmp_a);
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if (ix != IP4_ADDR_SZ)
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return 255;
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return 0;
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}
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static_network_cfg ()
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{
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int ix;
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debconf_command ("INPUT", "high", "netcfg/get_hostname", NULL);
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do {
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debconf_command ("INPUT", "critical", "netcfg/get_ipaddress", NULL);
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debconf_command ("GO", NULL);
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} while ( atoIP4(debconf_command ("GET", "netcfg/get_ipaddress", NULL), &ipaddress)) ;
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do {
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debconf_command ("INPUT", "critical", "netcfg/get_netmask", NULL);
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debconf_command ("GO", NULL);
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} while ( atoIP4(debconf_command ("GET", "netcfg/get_netmask", NULL), &netmask)) ;
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/*
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* Generate the network, broadcast and default gateway address
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* Default gateway address is network with last number set to "1",
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* or "2" if "1" is the local address.
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*/
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for (ix = 0; ix < IP4_ADDR_SZ; ix++)
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{
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gateway.i[ix] = network.i[ix] = ipaddr.i[ix] & netmask.i[ix];
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broadcast.i[ix] = (~netmask.i[ix] & 255) | ipaddr.i[ix];
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}
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gateway.i[IP4_ADDR_SZ - 1] |=
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(ipaddr.i[IP4_ADDR_SZ - 1] == (network.i[IP4_ADDR_SZ - 1] | 1)) ? 2 : 1;
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}
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int main(int argc, char *argv[]){
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debconf_command ("TITLE", "Network Configuration", NULL);
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static_netork_cfg();
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}
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