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- Generalized config file parsing to support multiple configuration trees.

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This commit is contained in:
Guus Sliepen 2000-10-11 13:42:52 +00:00
parent 451e9e3e7a
commit 6e39481d8f
3 changed files with 78 additions and 88 deletions
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124
src/conf.c
View file

@ -19,7 +19,7 @@
along with this program; if not, write to the Free Software along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: conf.c,v 1.9.4.10 2000/09/14 14:34:38 zarq Exp $ $Id: conf.c,v 1.9.4.11 2000/10/11 13:42:52 guus Exp $
*/ */
@ -48,33 +48,31 @@ char *configfilename = NULL;
/* Will be set if HUP signal is received. It will be processed when it is safe. */ /* Will be set if HUP signal is received. It will be processed when it is safe. */
int sighup = 0; int sighup = 0;
typedef struct internal_config_t {
char *name;
enum which_t which;
int argtype;
} internal_config_t;
/* /*
These are all the possible configurable values These are all the possible configurable values
*/ */
static internal_config_t hazahaza[] = { static internal_config_t hazahaza[] = {
{ "AllowConnect", allowconnect, TYPE_BOOL }, /* Is not used anywhere. Remove? */ /* Main configuration file keywords */
{ "ConnectTo", upstreamip, TYPE_NAME }, { "Name", tincname, TYPE_NAME },
{ "ConnectPort", upstreamport, TYPE_INT }, { "ConnectTo", connectto, TYPE_NAME },
{ "ListenPort", listenport, TYPE_INT },
{ "MyOwnVPNIP", myvpnip, TYPE_IP },
{ "MyVirtualIP", myvpnip, TYPE_IP }, /* an alias */
{ "Passphrases", passphrasesdir, TYPE_NAME },
{ "PingTimeout", pingtimeout, TYPE_INT }, { "PingTimeout", pingtimeout, TYPE_INT },
{ "TapDevice", tapdevice, TYPE_NAME }, { "TapDevice", tapdevice, TYPE_NAME },
{ "PrivateKey", privatekey, TYPE_NAME },
{ "KeyExpire", keyexpire, TYPE_INT }, { "KeyExpire", keyexpire, TYPE_INT },
{ "VpnMask", vpnmask, TYPE_IP },
{ "Hostnames", resolve_dns, TYPE_BOOL }, { "Hostnames", resolve_dns, TYPE_BOOL },
{ "IndirectData", indirectdata, TYPE_BOOL },
{ "TCPonly", tcponly, TYPE_BOOL },
{ "Interface", interface, TYPE_NAME }, { "Interface", interface, TYPE_NAME },
{ "InterfaceIP", interfaceip, TYPE_IP }, { "InterfaceIP", interfaceip, TYPE_IP },
{ "Name", tincname, TYPE_NAME }, /* Host configuration file keywords */
{ "Address", address, TYPE_NAME },
{ "Port", port, TYPE_INT },
{ "PublicKey", publickey, TYPE_NAME },
{ "Subnet", subnet, TYPE_NAME },
{ "RestrictHosts", restricthosts, TYPE_BOOL },
{ "RestrictSubnets", restrictsubnets, TYPE_BOOL },
{ "RestrictAddress", restrictaddress, TYPE_BOOL },
{ "RestrictPort", restrictport, TYPE_BOOL },
{ "IndirectData", indirectdata, TYPE_BOOL },
{ "TCPonly", tcponly, TYPE_BOOL },
{ NULL, 0, 0 } { NULL, 0, 0 }
}; };
@ -136,34 +134,39 @@ cp
} }
/* /*
Get variable from a section in a configfile. returns -1 on failure. Parse a configuration file and put the results in the configuration tree
starting at *base.
*/ */
int int read_config_file(config_t **base, const char *fname)
readconfig(const char *fname, FILE *fp)
{ {
char *line, *temp_buf; int err;
FILE *fp;
char line[MAXBUFSIZE]; /* There really should not be any line longer than this... */
char *p, *q; char *p, *q;
int i, lineno = 0; int i, err = -1, lineno = 0;
config_t *cfg; config_t *cfg;
cp cp
line = (char *)xmalloc(80 * sizeof(char)); if((fp = fopen (fname, "r")) == NULL)
temp_buf = (char *)xmalloc(80 * sizeof(char)); {
return -1;
}
for(;;) for(;;)
{ {
if(fgets(line, 80, fp) == NULL) if(fgets(line, MAXBUFSIZE, fp) == NULL)
return 0;
while(!index(line, '\n'))
{ {
fgets(temp_buf, (strlen(line)+1) * 80, fp); err = 0;
if(!temp_buf) break;
break;
strcat(line, temp_buf);
line = (char *)xrealloc(line, (strlen(line)+1) * sizeof(char));
} }
lineno++; lineno++;
if(!index(line, '\n'))
{
syslog(LOG_ERR, _("Line %d too long while reading config file %s"), lineno, fname);
break;
}
if((p = strtok(line, "\t\n\r =")) == NULL) if((p = strtok(line, "\t\n\r =")) == NULL)
continue; /* no tokens on this line */ continue; /* no tokens on this line */
@ -176,50 +179,31 @@ cp
if(!hazahaza[i].name) if(!hazahaza[i].name)
{ {
fprintf(stderr, _("%s: %d: Invalid variable name `%s'.\n"), syslog(LOG_ERR, _("Invalid variable name on line %d while reading config file %s"),
fname, lineno, p); lineno, fname);
return -1; break;
} }
if(((q = strtok(NULL, "\t\n\r =")) == NULL) || q[0] == '#') if(((q = strtok(NULL, "\t\n\r =")) == NULL) || q[0] == '#')
{ {
fprintf(stderr, _("%s: %d: No value given for `%s'.\n"), fprintf(stderr, _("No value for variable on line %d while reading config file %s"),
fname, lineno, hazahaza[i].name); lineno, fname);
return -1; break;
} }
cfg = add_config_val(&config, hazahaza[i].argtype, q); cfg = add_config_val(base, hazahaza[i].argtype, q);
if(cfg == NULL) if(cfg == NULL)
{ {
fprintf(stderr, _("%s: %d: Invalid value `%s' for variable `%s'.\n"), fprintf(stderr, _("Invalid value for variable on line %d while reading config file %s"),
fname, lineno, q, hazahaza[i].name); lineno, fname);
return -1; break;
} }
cfg->which = hazahaza[i].which; cfg->which = hazahaza[i].which;
if(!config) if(!config)
config = cfg; config = cfg;
} }
cp
return 0;
}
/*
wrapper function for readconfig
*/
int
read_config_file(const char *fname)
{
int err;
FILE *fp;
cp
if((fp = fopen (fname, "r")) == NULL)
{
fprintf(stderr, _("Could not open %s: %s\n"), fname, strerror(errno));
return 1;
}
err = readconfig(fname, fp);
fclose (fp); fclose (fp);
cp cp
return err; return err;
@ -228,10 +212,8 @@ cp
/* /*
Look up the value of the config option type Look up the value of the config option type
*/ */
const config_t * const config_t *get_config_val(config_t *p, which_t type)
get_config_val(which_t type)
{ {
config_t *p;
cp cp
for(p = config; p != NULL; p = p->next) for(p = config; p != NULL; p = p->next)
if(p->which == type) if(p->which == type)
@ -245,10 +227,8 @@ cp
Support for multiple config lines. Support for multiple config lines.
Index is used to get a specific value, 0 being the first, 1 the second etc. Index is used to get a specific value, 0 being the first, 1 the second etc.
*/ */
const config_t * const config_t *get_next_config_val(config_t *p, which_t type, int index)
get_next_config_val(which_t type, int index)
{ {
config_t *p;
cp cp
for(p = config; p != NULL; p = p->next) for(p = config; p != NULL; p = p->next)
if(p->which == type) if(p->which == type)
@ -262,11 +242,11 @@ cp
/* /*
Remove the complete configuration tree. Remove the complete configuration tree.
*/ */
void clear_config() void clear_config(config_t **base)
{ {
config_t *p, *next; config_t *p, *next;
cp cp
for(p = config; p != NULL; p = next) for(p = *base; p != NULL; p = next)
{ {
next = p->next; next = p->next;
if(p->data.ptr && (p->argtype == TYPE_NAME)) if(p->data.ptr && (p->argtype == TYPE_NAME))
@ -275,6 +255,6 @@ cp
} }
free(p); free(p);
} }
config = NULL; *base = NULL;
cp cp
} }

34
src/conf.h
View file

@ -17,7 +17,7 @@
along with this program; if not, write to the Free Software along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: conf.h,v 1.6.4.9 2000/09/14 14:34:38 zarq Exp $ $Id: conf.h,v 1.6.4.10 2000/10/11 13:42:52 guus Exp $
*/ */
#ifndef __TINC_CONF_H__ #ifndef __TINC_CONF_H__
@ -37,22 +37,26 @@ typedef union data_t {
} data_t; } data_t;
typedef enum which_t { typedef enum which_t {
passphrasesdir = 1, tincname = 1,
upstreamip, connectto,
upstreamport,
listenport,
myvpnip,
tapdevice,
allowconnect,
pingtimeout, pingtimeout,
tapdevice,
privatekey,
keyexpire, keyexpire,
vpnmask,
resolve_dns, resolve_dns,
indirectdata,
tcponly,
interface, interface,
interfaceip, interfaceip,
tincname, configuration
address,
port,
publickey,
subnet,
restricthosts,
restrictsubnets,
restrictaddress,
restrictport,
indirectdata,
tcponly,
} which_t; } which_t;
typedef struct config_t { typedef struct config_t {
@ -62,6 +66,12 @@ typedef struct config_t {
data_t data; data_t data;
} config_t; } config_t;
typedef struct internal_config_t {
char *name;
enum which_t which;
int argtype;
} internal_config_t;
enum { enum {
stupid_false = 1, stupid_false = 1,
stupid_true stupid_true

4
src/protocol.c
View file

@ -17,7 +17,7 @@
along with this program; if not, write to the Free Software along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: protocol.c,v 1.28.4.36 2000/09/26 14:06:06 guus Exp $ $Id: protocol.c,v 1.28.4.37 2000/10/11 13:42:52 guus Exp $
*/ */
#include "config.h" #include "config.h"
@ -187,7 +187,7 @@ cp
/* Load information about peer */ /* Load information about peer */
if(!read_id(cl)) if(!read_host_config(cl))
{ {
syslog(LOG_ERR, _("Peer %s had unknown identity (%s)"), cl->hostname, cl->name); syslog(LOG_ERR, _("Peer %s had unknown identity (%s)"), cl->hostname, cl->name);
return -1; return -1;