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edge now reads a configuration file with 'edge <file>' 

format of each line in the configuration file: '<option>{ ,=}<value>'
use '#' to comment out lines
pull/35/head
Alfredo Cardigliano 6 years ago
parent
fcd5dc86a5
commit
18186cff4d
1 changed files with 385 additions and 438 deletions
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  1. 819
      edge.c

819
edge.c
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@ -30,136 +30,82 @@
/** maximum length of a line in the configuration file */
#define MAX_CONFFILE_LINE_LENGTH 1024
/* ******************************************************* */
/** Main structure type for edge. */
/* ************************************** */
/* parse the configuration file */
static int readConfFile(const char * filename, char * const linebuffer) {
struct stat stats;
FILE * fd;
char * buffer = NULL;
buffer = (char *)malloc(MAX_CONFFILE_LINE_LENGTH);
if(!buffer) {
traceEvent(TRACE_ERROR, "Unable to allocate memory");
return -1;
}
if(stat(filename, &stats)) {
if(errno == ENOENT)
traceEvent(TRACE_ERROR, "parameter file %s not found/unable to access\n", filename);
else
traceEvent(TRACE_ERROR, "cannot stat file %s, errno=%d\n",filename, errno);
free(buffer);
return -1;
}
fd = fopen(filename, "rb");
if(!fd) {
traceEvent(TRACE_ERROR, "Unable to open parameter file '%s' (%d)...\n",filename,errno);
free(buffer);
return -1;
}
while(fgets(buffer, MAX_CONFFILE_LINE_LENGTH,fd)) {
char * p = NULL;
/* strip out comments */
p = strchr(buffer, '#');
if(p) *p ='\0';
/* ***************************************************** */
/* remove \n */
p = strchr(buffer, '\n');
if(p) *p ='\0';
typedef struct {
int local_port;
int mgmt_port;
char tuntap_dev_name[N2N_IFNAMSIZ];
char ip_mode[N2N_IF_MODE_SIZE];
char ip_addr[N2N_NETMASK_STR_SIZE];
char netmask[N2N_NETMASK_STR_SIZE];
int mtu;
int got_s;
char device_mac[N2N_MACNAMSIZ];
char * encrypt_key;
#ifndef WIN32
uid_t userid;
gid_t groupid;
#endif
} edge_conf_t;
/* strip out heading spaces */
p = buffer;
while(*p == ' ' && *p != '\0') ++p;
if(p != buffer) strncpy(buffer,p,strlen(p)+1);
/* ***************************************************** */
/* strip out trailing spaces */
while(strlen(buffer) && buffer[strlen(buffer)-1]==' ')
buffer[strlen(buffer)-1]= '\0';
/** Find the address and IP mode for the tuntap device.
*
* s is one of these forms:
*
* <host> := <hostname> | A.B.C.D
*
* <host> | static:<host> | dhcp:<host>
*
* If the mode is present (colon required) then fill ip_mode with that value
* otherwise do not change ip_mode. Fill ip_mode with everything after the
* colon if it is present; or s if colon is not present.
*
* ip_add and ip_mode are NULL terminated if modified.
*
* return 0 on success and -1 on error
*/
static int scan_address(char * ip_addr, size_t addr_size,
char * ip_mode, size_t mode_size,
const char * s) {
int retval = -1;
char * p;
/* check for nested @file option */
if(strchr(buffer, '@')) {
traceEvent(TRACE_ERROR, "@file in file nesting is not supported\n");
free(buffer);
return -1;
}
if((strlen(linebuffer)+strlen(buffer)+2)< MAX_CMDLINE_BUFFER_LENGTH) {
strncat(linebuffer, " ", 1);
strncat(linebuffer, buffer, strlen(buffer));
} else {
traceEvent(TRACE_ERROR, "too many argument");
free(buffer);
if((NULL == s) || (NULL == ip_addr))
{
return -1;
}
}
free(buffer);
fclose(fd);
memset(ip_addr, 0, addr_size);
return 0;
}
p = strpbrk(s, ":");
/* ************************************** */
if(p)
{
/* colon is present */
if(ip_mode)
{
size_t end=0;
/* Create the argv vector */
static char ** buildargv(int * effectiveargc, char * const linebuffer) {
const int INITIAL_MAXARGC = 16; /* Number of args + NULL in initial argv */
int maxargc;
int argc=0;
char ** argv;
char * buffer, * buff;
*effectiveargc = 0;
buffer = (char *)calloc(1, strlen(linebuffer)+2);
if(!buffer) {
traceEvent(TRACE_ERROR, "Unable to allocate memory");
return NULL;
}
strncpy(buffer, linebuffer,strlen(linebuffer));
maxargc = INITIAL_MAXARGC;
argv = (char **)malloc(maxargc * sizeof(char*));
if(argv == NULL) {
traceEvent(TRACE_ERROR, "Unable to allocate memory");
return NULL;
}
buff = buffer;
while(buff) {
char * p = strchr(buff,' ');
if(p) {
*p='\0';
argv[argc++] = strdup(buff);
while(*++p == ' ' && *p != '\0');
buff=p;
if(argc >= maxargc) {
maxargc *= 2;
argv = (char **)realloc(argv, maxargc * sizeof(char*));
if(argv == NULL) {
traceEvent(TRACE_ERROR, "Unable to re-allocate memory");
free(buffer);
return NULL;
}
memset(ip_mode, 0, mode_size);
end = MIN(p-s, (ssize_t)(mode_size-1)); /* ensure NULL term */
strncpy(ip_mode, s, end);
strncpy(ip_addr, p+1, addr_size-1); /* ensure NULL term */
retval = 0;
}
} else {
argv[argc++] = strdup(buff);
break;
}
else
{
/* colon is not present */
strncpy(ip_addr, s, addr_size);
}
free(buffer);
*effectiveargc = argc;
return argv;
return retval;
}
/* ************************************** */
/* *************************************************** */
static void help() {
print_n2n_version();
@ -220,6 +166,284 @@ static void help() {
exit(0);
}
/* *************************************************** */
static int setOption(int optkey, char *optarg, edge_conf_t *ec, n2n_edge_t *eee) {
traceEvent(TRACE_NORMAL, "Option %c = %s", optkey, optarg ? optarg : "");
switch(optkey) {
case'K':
{
if(ec->encrypt_key) {
fprintf(stderr, "Error: -K and -k options are mutually exclusive.\n");
exit(1);
} else {
strncpy(eee->keyschedule, optarg, N2N_PATHNAME_MAXLEN-1);
/* strncpy does not add NULL if the source has no NULL. */
eee->keyschedule[N2N_PATHNAME_MAXLEN-1] = 0;
traceEvent(TRACE_DEBUG, "keyfile = '%s'\n", eee->keyschedule);
fprintf(stderr, "keyfile = '%s'\n", eee->keyschedule);
}
break;
}
case 'a': /* IP address and mode of TUNTAP interface */
{
scan_address(ec->ip_addr, N2N_NETMASK_STR_SIZE,
ec->ip_mode, N2N_IF_MODE_SIZE,
optarg);
break;
}
case 'c': /* community as a string */
{
memset(eee->community_name, 0, N2N_COMMUNITY_SIZE);
strncpy((char *)eee->community_name, optarg, N2N_COMMUNITY_SIZE);
break;
}
case 'E': /* multicast ethernet addresses accepted. */
{
eee->drop_multicast=0;
traceEvent(TRACE_DEBUG, "Enabling ethernet multicast traffic\n");
break;
}
#ifndef WIN32
case 'u': /* unprivileged uid */
{
ec->userid = atoi(optarg);
break;
}
case 'g': /* unprivileged uid */
{
ec->groupid = atoi(optarg);
break;
}
#endif
#ifndef WIN32
case 'f' : /* do not fork as daemon */
{
eee->daemon=0;
break;
}
#endif /* #ifndef WIN32 */
case 'm' : /* TUNTAP MAC address */
{
strncpy(ec->device_mac,optarg,N2N_MACNAMSIZ);
break;
}
case 'M' : /* TUNTAP MTU */
{
ec->mtu = atoi(optarg);
break;
}
case 'k': /* encrypt key */
{
if(strlen(eee->keyschedule) > 0) {
fprintf(stderr, "Error: -K and -k options are mutually exclusive.\n");
exit(1);
} else {
traceEvent(TRACE_DEBUG, "encrypt_key = '%s'\n", ec->encrypt_key);
ec->encrypt_key = strdup(optarg);
}
break;
}
case 'r': /* enable packet routing across n2n endpoints */
{
eee->allow_routing = 1;
break;
}
case 'l': /* supernode-list */
{
if(eee->sn_num < N2N_EDGE_NUM_SUPERNODES) {
strncpy((eee->sn_ip_array[eee->sn_num]), optarg, N2N_EDGE_SN_HOST_SIZE);
traceEvent(TRACE_DEBUG, "Adding supernode[%u] = %s\n", (unsigned int)eee->sn_num, (eee->sn_ip_array[eee->sn_num]));
++eee->sn_num;
} else {
fprintf(stderr, "Too many supernodes!\n");
exit(1);
}
break;
}
#if defined(N2N_CAN_NAME_IFACE)
case 'd': /* TUNTAP name */
{
strncpy(ec->tuntap_dev_name, optarg, N2N_IFNAMSIZ);
break;
}
#endif
case 'b':
{
eee->re_resolve_supernode_ip = 1;
break;
}
case 'p':
{
ec->local_port = atoi(optarg);
break;
}
case 't':
{
ec->mgmt_port = atoi(optarg);
break;
}
case 's': /* Subnet Mask */
{
if(0 != ec->got_s) {
traceEvent(TRACE_WARNING, "Multiple subnet masks supplied.");
}
strncpy(ec->netmask, optarg, N2N_NETMASK_STR_SIZE);
ec->got_s = 1;
break;
}
case 'h': /* help */
{
help();
break;
}
case 'v': /* verbose */
{
++traceLevel; /* do 2 -v flags to increase verbosity to DEBUG level*/
break;
}
default:
{
traceEvent(TRACE_WARNING, "Unknown option -%c: Ignored.", (char)optkey);
return(-1);
}
}
return(0);
}
/* *********************************************** */
static const struct option long_options[] = {
{ "community", required_argument, NULL, 'c' },
{ "supernode-list", required_argument, NULL, 'l' },
{ "tun-device", required_argument, NULL, 'd' },
{ "euid", required_argument, NULL, 'u' },
{ "egid", required_argument, NULL, 'g' },
{ "help" , no_argument, NULL, 'h' },
{ "verbose", no_argument, NULL, 'v' },
{ NULL, 0, NULL, 0 }
};
/* *************************************************** */
/* read command line options */
static int loadFromCLI(int argc, char *argv[], edge_conf_t *ec, n2n_edge_t *eee) {
u_char c;
while((c = getopt_long(argc, argv,
"K:k:a:bc:Eu:g:m:M:s:d:l:p:fvhrt:",
long_options, NULL)) != '?') {
if(c == 255) break;
setOption(c, optarg, ec, eee);
}
return 0;
}
/* *************************************************** */
static char *trim(char *s) {
char *end;
while(isspace(s[0]) || (s[0] == '"') || (s[0] == '\'')) s++;
if(s[0] == 0) return s;
end = &s[strlen(s) - 1];
while(end > s
&& (isspace(end[0])|| (end[0] == '"') || (end[0] == '\'')))
end--;
end[1] = 0;
return s;
}
/* *************************************************** */
/* parse the configuration file */
static int loadFromFile(const char *path, edge_conf_t *ec, n2n_edge_t *eee) {
char buffer[4096], *line, *key, *value;
u_int line_len, opt_name_len;
FILE *fd;
const struct option *opt;
fd = fopen(path, "r");
if(fd == NULL) {
traceEvent(TRACE_WARNING, "Config file %s not found", path);
return -1;
}
while((line = fgets(buffer, sizeof(buffer), fd)) != NULL) {
line = trim(line);
value = NULL;
if((line_len = strlen(line)) < 2 || line[0] == '#')
continue;
if(!strncmp(line, "--", 2)) { /* long opt */
key = &line[2], line_len -= 2;
opt = long_options;
while(opt->name != NULL) {
opt_name_len = strlen(opt->name);
if(!strncmp(key, opt->name, opt_name_len)
&& (line_len <= opt_name_len
|| key[opt_name_len] == '\0'
|| key[opt_name_len] == ' '
|| key[opt_name_len] == '=')) {
if(line_len > opt_name_len) key[opt_name_len] = '\0';
if(line_len > opt_name_len + 1) value = trim(&key[opt_name_len + 1]);
// traceEvent(TRACE_NORMAL, "long key: %s value: %s", key, value);
setOption(opt->val, value, ec, eee);
break;
}
opt++;
}
} else if(line[0] == '-') { /* short opt */
key = &line[1], line_len--;
if(line_len > 1) key[1] = '\0';
if(line_len > 2) value = trim(&key[2]);
// traceEvent(TRACE_NORMAL, "key: %c value: %s", key[0], value);
setOption(key[0], value, ec, eee);
} else {
traceEvent(TRACE_WARNING, "Skipping unrecognized line: %s", line);
continue;
}
}
fclose(fd);
return 0;
}
/* ************************************** */
#if defined(DUMMY_ID_00001) /* Disabled waiting for config option to enable it */
@ -273,75 +497,6 @@ static void send_grat_arps(n2n_edge_t * eee,) {
#endif /* #if defined(DUMMY_ID_00001) */
/* *********************************************** */
static const struct option long_options[] = {
{ "community", required_argument, NULL, 'c' },
{ "supernode-list", required_argument, NULL, 'l' },
{ "tun-device", required_argument, NULL, 'd' },
{ "euid", required_argument, NULL, 'u' },
{ "egid", required_argument, NULL, 'g' },
{ "help" , no_argument, NULL, 'h' },
{ "verbose", no_argument, NULL, 'v' },
{ NULL, 0, NULL, 0 }
};
/* ***************************************************** */
/** Find the address and IP mode for the tuntap device.
*
* s is one of these forms:
*
* <host> := <hostname> | A.B.C.D
*
* <host> | static:<host> | dhcp:<host>
*
* If the mode is present (colon required) then fill ip_mode with that value
* otherwise do not change ip_mode. Fill ip_mode with everything after the
* colon if it is present; or s if colon is not present.
*
* ip_add and ip_mode are NULL terminated if modified.
*
* return 0 on success and -1 on error
*/
static int scan_address(char * ip_addr, size_t addr_size,
char * ip_mode, size_t mode_size,
const char * s) {
int retval = -1;
char * p;
if((NULL == s) || (NULL == ip_addr))
{
return -1;
}
memset(ip_addr, 0, addr_size);
p = strpbrk(s, ":");
if(p)
{
/* colon is present */
if(ip_mode)
{
size_t end=0;
memset(ip_mode, 0, mode_size);
end = MIN(p-s, (ssize_t)(mode_size-1)); /* ensure NULL term */
strncpy(ip_mode, s, end);
strncpy(ip_addr, p+1, addr_size-1); /* ensure NULL term */
retval = 0;
}
}
else
{
/* colon is not present */
strncpy(ip_addr, s, addr_size);
}
return retval;
}
/* ************************************** */
static void daemonize() {
@ -393,31 +548,28 @@ static void daemonize() {
/** Entry point to program from kernel. */
int main(int argc, char* argv[]) {
int opt;
int keep_on_running = 1;
int local_port = 0 /* any port */;
int mgmt_port = N2N_EDGE_MGMT_PORT; /* 5644 by default */
char tuntap_dev_name[N2N_IFNAMSIZ] = "edge0";
char ip_mode[N2N_IF_MODE_SIZE] = "static";
char ip_addr[N2N_NETMASK_STR_SIZE] = "";
char netmask[N2N_NETMASK_STR_SIZE] = "255.255.255.0";
int mtu = DEFAULT_MTU;
int got_s = 0;
int rc;
int i;
n2n_edge_t eee; /* single instance for this program */
edge_conf_t ec;
ec.local_port = 0 /* any port */;
ec.mgmt_port = N2N_EDGE_MGMT_PORT; /* 5644 by default */
snprintf(ec.tuntap_dev_name, sizeof(ec.tuntap_dev_name), "edge0");
snprintf(ec.ip_mode, sizeof(ec.ip_mode), "static");
snprintf(ec.netmask, sizeof(ec.netmask), "255.255.255.0");
ec.ip_addr[0] = '\0';
ec.device_mac[0] = '\0';
ec.mtu = DEFAULT_MTU;
ec.got_s = 0;
ec.encrypt_key = NULL;
#ifndef WIN32
uid_t userid = 0; /* root is the only guaranteed ID */
gid_t groupid = 0; /* root is the only guaranteed ID */
ec.userid = 0; /* root is the only guaranteed ID */
ec.groupid = 0; /* root is the only guaranteed ID */
#endif
char device_mac[N2N_MACNAMSIZ] = "";
char * encrypt_key = NULL;
int i, effectiveargc = 0;
char ** effectiveargv = NULL;
char * linebuffer = NULL;
n2n_edge_t eee; /* single instance for this program */
if(-1 == edge_init(&eee))
{
traceEvent(TRACE_ERROR, "Failed in edge_init");
@ -426,225 +578,26 @@ int main(int argc, char* argv[]) {
if(getenv("N2N_KEY"))
{
encrypt_key = strdup(getenv("N2N_KEY"));
ec.encrypt_key = strdup(getenv("N2N_KEY"));
}
#ifdef WIN32
tuntap_dev_name[0] = '\0';
ec.tuntap_dev_name[0] = '\0';
#endif
memset(&(eee.supernode), 0, sizeof(eee.supernode));
eee.supernode.family = AF_INET;
linebuffer = (char *)malloc(MAX_CMDLINE_BUFFER_LENGTH);
if(!linebuffer)
{
traceEvent(TRACE_ERROR, "Unable to allocate memory");
exit(1);
}
snprintf(linebuffer, MAX_CMDLINE_BUFFER_LENGTH, "%s",argv[0]);
#ifdef WIN32
for(i=0; i < (int)strlen(linebuffer); i++)
if(linebuffer[i] == '\\') linebuffer[i] = '/';
#endif
for(i=1;i<argc;++i)
{
if(argv[i][0] == '@')
{
if(readConfFile(&argv[i][1], linebuffer)<0) exit(1); /* <<<<----- check */
}
else if((strlen(linebuffer)+strlen(argv[i])+2) < MAX_CMDLINE_BUFFER_LENGTH)
{
strncat(linebuffer, " ", 1);
strncat(linebuffer, argv[i], strlen(argv[i]));
}
else
{
traceEvent(TRACE_ERROR, "too many argument");
exit(1);
}
}
/* strip trailing spaces */
while(strlen(linebuffer) && linebuffer[strlen(linebuffer)-1]==' ')
linebuffer[strlen(linebuffer)-1]= '\0';
/* build the new argv from the linebuffer */
effectiveargv = buildargv(&effectiveargc, linebuffer);
if(linebuffer)
{
free(linebuffer);
linebuffer = NULL;
}
/* {int k;for(k=0;k<effectiveargc;++k) printf("%s\n",effectiveargv[k]);} */
if(effectiveargc < 2)
help();
optarg = NULL;
while((opt = getopt_long(effectiveargc,
effectiveargv,
"K:k:a:bc:Eu:g:m:M:s:d:l:p:fvhrt:", long_options, NULL)) != EOF) {
switch (opt)
{
case'K':
{
if(encrypt_key)
{
fprintf(stderr, "Error: -K and -k options are mutually exclusive.\n");
exit(1);
}
else
{
strncpy(eee.keyschedule, optarg, N2N_PATHNAME_MAXLEN-1);
/* strncpy does not add NULL if the source has no NULL. */
eee.keyschedule[N2N_PATHNAME_MAXLEN-1] = 0;
traceEvent(TRACE_DEBUG, "keyfile = '%s'\n", eee.keyschedule);
fprintf(stderr, "keyfile = '%s'\n", eee.keyschedule);
}
break;
}
case 'a': /* IP address and mode of TUNTAP interface */
{
scan_address(ip_addr, N2N_NETMASK_STR_SIZE,
ip_mode, N2N_IF_MODE_SIZE,
optarg);
break;
}
case 'c': /* community as a string */
{
memset(eee.community_name, 0, N2N_COMMUNITY_SIZE);
strncpy((char *)eee.community_name, optarg, N2N_COMMUNITY_SIZE);
break;
}
case 'E': /* multicast ethernet addresses accepted. */
{
eee.drop_multicast=0;
traceEvent(TRACE_DEBUG, "Enabling ethernet multicast traffic\n");
break;
}
#ifndef WIN32
case 'u': /* unprivileged uid */
{
userid = atoi(optarg);
break;
}
case 'g': /* unprivileged uid */
{
groupid = atoi(optarg);
break;
}
#endif
#ifndef WIN32
case 'f' : /* do not fork as daemon */
{
eee.daemon=0;
break;
}
#endif /* #ifndef WIN32 */
case 'm' : /* TUNTAP MAC address */
{
strncpy(device_mac,optarg,N2N_MACNAMSIZ);
break;
}
case 'M' : /* TUNTAP MTU */
{
mtu = atoi(optarg);
break;
}
case 'k': /* encrypt key */
{
if(strlen(eee.keyschedule) > 0)
{
fprintf(stderr, "Error: -K and -k options are mutually exclusive.\n");
exit(1);
} else {
traceEvent(TRACE_DEBUG, "encrypt_key = '%s'\n", encrypt_key);
encrypt_key = strdup(optarg);
}
break;
}
case 'r': /* enable packet routing across n2n endpoints */
{
eee.allow_routing = 1;
break;
}
case 'l': /* supernode-list */
{
if(eee.sn_num < N2N_EDGE_NUM_SUPERNODES)
{
strncpy((eee.sn_ip_array[eee.sn_num]), optarg, N2N_EDGE_SN_HOST_SIZE);
traceEvent(TRACE_DEBUG, "Adding supernode[%u] = %s\n", (unsigned int)eee.sn_num, (eee.sn_ip_array[eee.sn_num]));
++eee.sn_num;
}
else
{
fprintf(stderr, "Too many supernodes!\n");
exit(1);
}
break;
}
#if defined(N2N_CAN_NAME_IFACE)
case 'd': /* TUNTAP name */
{
strncpy(tuntap_dev_name, optarg, N2N_IFNAMSIZ);
break;
}
if((argc >= 2) && (argv[1][0] != '-')) {
rc = loadFromFile(argv[1], &ec, &eee);
if(argc > 2)
rc = loadFromCLI(argc, argv, &ec, &eee);
} else
#endif
rc = loadFromCLI(argc, argv, &ec, &eee);
case 'b':
{
eee.re_resolve_supernode_ip = 1;
break;
}
case 'p':
{
local_port = atoi(optarg);
break;
}
case 't':
{
mgmt_port = atoi(optarg);
break;
}
case 's': /* Subnet Mask */
{
if(0 != got_s)
{
traceEvent(TRACE_WARNING, "Multiple subnet masks supplied.");
}
strncpy(netmask, optarg, N2N_NETMASK_STR_SIZE);
got_s = 1;
break;
}
case 'h': /* help */
{
help();
break;
}
case 'v': /* verbose */
{
++traceLevel; /* do 2 -v flags to increase verbosity to DEBUG level*/
break;
}
} /* end switch */
}
if(rc < 0)
return(-1);
#ifndef WIN32
if(eee.daemon) {
@ -660,24 +613,18 @@ int main(int argc, char* argv[]) {
supernode2addr(&(eee.supernode), eee.sn_ip_array[eee.sn_idx]);
for (i=0; i<effectiveargc; ++i)
free(effectiveargv[i]);
free(effectiveargv);
effectiveargv = NULL, effectiveargc = 0;
if(!(
#ifdef __linux__
(tuntap_dev_name[0] != 0) &&
(ec.tuntap_dev_name[0] != 0) &&
#endif
(eee.community_name[0] != 0) &&
(ip_addr[0] != 0)
(ec.ip_addr[0] != 0)
))
{
help();
}
if((NULL == encrypt_key) && (0 == strlen(eee.keyschedule)))
if((NULL == ec.encrypt_key) && (0 == strlen(eee.keyschedule)))
{
traceEvent(TRACE_WARNING, "Encryption is disabled in edge.");
@ -690,32 +637,32 @@ int main(int argc, char* argv[]) {
/* setgid(0); */
#endif
if(0 == strcmp("dhcp", ip_mode)) {
if(0 == strcmp("dhcp", ec.ip_mode)) {
traceEvent(TRACE_NORMAL, "Dynamic IP address assignment enabled.");
eee.dyn_ip_mode = 1;
} else
traceEvent(TRACE_NORMAL, "ip_mode='%s'", ip_mode);
traceEvent(TRACE_NORMAL, "ip_mode='%s'", ec.ip_mode);
if(tuntap_open(&(eee.device), tuntap_dev_name, ip_mode, ip_addr, netmask, device_mac, mtu) < 0)
if(tuntap_open(&(eee.device), ec.tuntap_dev_name, ec.ip_mode, ec.ip_addr, ec.netmask, ec.device_mac, ec.mtu) < 0)
return(-1);
#ifndef WIN32
if((userid != 0) || (groupid != 0)) {
if((ec.userid != 0) || (ec.groupid != 0)) {
traceEvent(TRACE_NORMAL, "Interface up. Dropping privileges to uid=%d, gid=%d",
(signed int)userid, (signed int)groupid);
(signed int)ec.userid, (signed int)ec.groupid);
/* Finished with the need for root privileges. Drop to unprivileged user. */
setreuid(userid, userid);
setregid(groupid, groupid);
setreuid(ec.userid, ec.userid);
setregid(ec.groupid, ec.groupid);
}
#endif
if(local_port > 0)
traceEvent(TRACE_NORMAL, "Binding to local port %d", (signed int)local_port);
if(ec.local_port > 0)
traceEvent(TRACE_NORMAL, "Binding to local port %d", (signed int)ec.local_port);
if(encrypt_key) {
if(edge_init_twofish(&eee, (uint8_t *)(encrypt_key), strlen(encrypt_key)) < 0) {
if(ec.encrypt_key) {
if(edge_init_twofish(&eee, (uint8_t *)(ec.encrypt_key), strlen(ec.encrypt_key)) < 0) {
fprintf(stderr, "Error: twofish setup failed.\n");
return(-1);
}
@ -727,16 +674,16 @@ int main(int argc, char* argv[]) {
}
/* else run in NULL mode */
eee.udp_sock = open_socket(local_port, 1 /* bind ANY */);
eee.udp_sock = open_socket(ec.local_port, 1 /* bind ANY */);
if(eee.udp_sock < 0) {
traceEvent(TRACE_ERROR, "Failed to bind main UDP port %u", (signed int)local_port);
traceEvent(TRACE_ERROR, "Failed to bind main UDP port %u", (signed int)ec.local_port);
return(-1);
}
eee.udp_mgmt_sock = open_socket(mgmt_port, 0 /* bind LOOPBACK */);
eee.udp_mgmt_sock = open_socket(ec.mgmt_port, 0 /* bind LOOPBACK */);
if(eee.udp_mgmt_sock < 0) {
traceEvent(TRACE_ERROR, "Failed to bind management UDP port %u", mgmt_port);
traceEvent(TRACE_ERROR, "Failed to bind management UDP port %u", ec.mgmt_port);
return(-1);
}

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