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/* socks_rdconf */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <syslog.h>
#include "socks.h"
int socks_rdconf(filename, cfAddrPtr, NcfPtr, useSyslog)
char *filename;
struct config **cfAddrPtr;
int *NcfPtr;
int useSyslog;
{
FILE *fd;
static char buf[1024];
char *bp, *ch;
int linenum = 0;
char *argv[10];
int argc;
int next_arg;
long p;
int Ncf = 0, maxcf = 0;
struct config *cfAddr, *cp;
int has_error = 0;
int i;
int k;
if ((fd = fopen(filename, "r")) == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Cannot open %s\n", filename);
else
fprintf(stderr, "Cannot open %s\n", filename);
exit(1);
}
for (i = 0, cp = *cfAddrPtr; i++ < *NcfPtr; cp++) {
if (cp->userlist != NULL)
free(cp->userlist);
if (cp->serverlist != NULL)
free(cp->serverlist);
if (cp->cmdp != NULL)
free(cp->cmdp);
if (cp->ddomain != NULL)
free(cp->ddomain);
}
if (*cfAddrPtr)
free(*cfAddrPtr);
maxcf = CONF_INCR;
cfAddr = (struct config *) malloc( maxcf * sizeof(struct config));
if (cfAddr == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
exit(1);
}
Ncf = 0;
cp = cfAddr;
while (fgets(buf, sizeof(buf) - 1, fd) != NULL) {
linenum++;
bzero(cp, sizeof(struct config));
/*
** Comments start with a '#' anywhere on the line
*/
if ((bp = index(buf, '\n')) != NULL)
*bp = '\0';
for (bp = buf; *bp != '\0'; bp++) {
if (*bp == ':') {
*bp++ = '\0';
cp->cmdp = strdup(bp);
if (cp->cmdp == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
exit(1);
}
break;
} else if (*bp == '#') {
*bp = '\0';
break;
} else if (*bp == '\t')
*bp = ' ';
}
if (strlen(buf) == 0) continue;
socks_mkargs(buf, &argc, argv, 10);
if (argc == 0) {
continue;
}
/* #ifdef hpux */
if (STREQ(*argv, "domain") || STREQ(*argv, "nameserver") ||
STREQ(*argv, "bind") || STREQ(*argv, "findserver"))
continue;
/* #endif */ /* #ifdef hpux */
if ((argc < 3) || (argc > 7)) {
if (useSyslog)
syslog(LOG_HIGH, "Invalid entry at line %d in file %s", linenum, filename);
else
fprintf(stderr, "Invalid entry at line %d in file %s\n", linenum, filename);
has_error = 1;
continue;
}
/* parse the whole entry now, once. */
next_arg = 1;
if (STREQ(argv[0], "sockd")) {
cp->action = SOCKS_SOCKD;
k = strlen("@=");
if (strncmp(argv[1], "@=", k) == 0) {
if (*(argv[1] + k))
cp->serverlist = strdup(argv[1] + k);
if (cp->serverlist == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
exit(1);
}
next_arg++;
}
} else if (strncmp(argv[0], "sockd@", (k=strlen("sockd@"))) == 0) {
cp->action = SOCKS_SOCKD;
cp->serverlist = strdup(argv[0] + k);
if (cp->serverlist == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
exit(1);
}
} else if (STREQ(argv[0], "direct")) {
cp->action = SOCKS_DIRECT;
} else if (STREQ(argv[0], "deny")) {
cp->action = SOCKS_DENY;
} else {
if (useSyslog)
syslog(LOG_HIGH, "Invalid sockd/direct/deny field at line %d in file %s", linenum, filename);
else
fprintf(stderr, "Invalid sockd/direct/deny field at line %d in file %s\n", linenum, filename);
has_error = 1;
continue;
}
k = strlen("*=");
if (strncmp(argv[next_arg], "*=", k) == 0) {
if (*(argv[next_arg] + k)) {
cp->userlist = strdup(argv[next_arg] + k);
if (cp->userlist == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
exit(1);
}
}
next_arg++;
}
if(argc <= next_arg+1) {
if (useSyslog)
syslog(LOG_HIGH, "Invalid entry at line %d in file %s", linenum, filename);
else
fprintf(stderr, "Invalid entry at line %d in file %s\n", linenum, filename);
has_error = 1;
continue;
}
if (socks_GetAddr(argv[next_arg++], &cp->daddr, &cp->ddomain) == -1) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
has_error = 1;
continue;
}
if (socks_GetQuad(argv[next_arg++], &cp->dmask) == -1) {
if (useSyslog)
syslog(LOG_HIGH, "Illegal destination mask at line %d in file %s", linenum, filename);
else
fprintf(stderr, "Illegal destination mask at line %d in file %s\n", linenum, filename);
has_error = 1;
continue;
}
if (argc > next_arg + 1) {
ch = argv[next_arg];
if (STREQ(ch, "eq"))
cp->tst = e_eq;
else if (STREQ(ch, "neq"))
cp->tst = e_neq;
else if (STREQ(ch, "lt"))
cp->tst = e_lt;
else if (STREQ(ch, "gt"))
cp->tst = e_gt;
else if (STREQ(ch, "le"))
cp->tst = e_le;
else if (STREQ(ch, "ge"))
cp->tst = e_ge;
else {
if (useSyslog)
syslog(LOG_HIGH, "Invalid comparison at line %d in file %s", linenum, filename);
else
fprintf(stderr, "Invalid comparison at line %d in file %s\n", linenum, filename);
has_error = 1;
continue;
}
if (((p = socks_GetPort(argv[next_arg+1])) < 0) ||
(p >= (1L << 16))) {
if (useSyslog)
syslog(LOG_HIGH, "Invalid port number at line %d in file %s", linenum, filename);
else
fprintf(stderr, "Invalid port number at line %d in file %s\n", linenum, filename);
has_error = 1;
continue;
} else {
cp->dport = p;
}
} else {
cp->tst = e_nil;
}
if (++Ncf >= maxcf) {
maxcf += CONF_INCR;
cfAddr = (struct config *) realloc(cfAddr, maxcf * sizeof(struct config));
if (cfAddr == NULL) {
if (useSyslog)
syslog(LOG_HIGH, "Out of memory\n");
else
fprintf(stderr, "Out of memory\n");
exit(1);
}
cp = cfAddr + Ncf;
} else {
cp++;
}
}
fclose(fd);
if (Ncf == 0) {
if (useSyslog)
syslog(LOG_HIGH, "No valid entires in file %s", filename);
else
fprintf(stderr, "No valid entires in file %s\n", filename);
exit(1);
}
if (has_error)
exit(1);
if (Ncf < maxcf)
cfAddr = (struct config *) realloc(cfAddr, Ncf * sizeof(struct config));
*NcfPtr = Ncf;
*cfAddrPtr = cfAddr;
return 0;
}
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