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Consistently allocate device and iface variables on the heap.

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This fixes a segfault when no Device has been specified and tinc exits, and it
would try to free() a static string. Thanks to Borg for spottin.
This commit is contained in:
Guus Sliepen 2009-01-03 22:06:10 +01:00
parent f81cea3bdc
commit b069da90d6
7 changed files with 26 additions and 23 deletions
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11
src/bsd/device.c
View file

@ -27,6 +27,7 @@
#include "net.h"
#include "route.h"
#include "utils.h"
#include "xalloc.h"
#define DEFAULT_DEVICE "/dev/tun0"
@ -37,9 +38,9 @@ typedef enum device_type {
} device_type_t;
int device_fd = -1;
char *device;
char *iface;
char *device_info;
char *device = NULL;
char *iface = NULL;
static char *device_info = NULL;
static int device_total_in = 0;
static int device_total_out = 0;
#if defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD)
@ -54,10 +55,10 @@ bool setup_device(void) {
cp();
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = DEFAULT_DEVICE;
device = xstrdup(DEFAULT_DEVICE);
if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
iface = xstrdup(rindex(device, '/') ? rindex(device, '/') + 1 : device);
if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));

2
src/cygwin/device.c
View file

@ -38,7 +38,7 @@ int device_fd = -1;
static HANDLE device_handle = INVALID_HANDLE_VALUE;
char *device = NULL;
char *iface = NULL;
char *device_info = NULL;
static char *device_info = NULL;
static int device_total_in = 0;
static int device_total_out = 0;

11
src/linux/device.c
View file

@ -34,6 +34,7 @@
#include "net.h"
#include "route.h"
#include "utils.h"
#include "xalloc.h"
typedef enum device_type_t {
DEVICE_TYPE_ETHERTAP,
@ -45,8 +46,8 @@ int device_fd = -1;
static device_type_t device_type;
char *device;
char *iface;
char ifrname[IFNAMSIZ];
char *device_info;
static char ifrname[IFNAMSIZ];
static char *device_info;
static int device_total_in = 0;
static int device_total_out = 0;
@ -58,13 +59,13 @@ bool setup_device(void)
cp();
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = DEFAULT_DEVICE;
device = xstrdup(DEFAULT_DEVICE);
if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
#ifdef HAVE_LINUX_IF_TUN_H
iface = netname;
iface = xstrdup(netname);
#else
iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
iface = xstrdup(rindex(device, '/') ? rindex(device, '/') + 1 : device);
#endif
device_fd = open(device, O_RDWR | O_NONBLOCK);

4
src/mingw/device.c
View file

@ -38,7 +38,7 @@ int device_fd = 0;
static HANDLE device_handle = INVALID_HANDLE_VALUE;
char *device = NULL;
char *iface = NULL;
char *device_info = NULL;
static char *device_info = NULL;
static int device_total_in = 0;
static int device_total_out = 0;
@ -52,7 +52,7 @@ static struct packetbuf {
static int nbufs = 64;
DWORD WINAPI tapreader(void *bla) {
static DWORD WINAPI tapreader(void *bla) {
int sock, err, status;
struct addrinfo *ai;
struct addrinfo hint = {

12
src/raw_socket/device.c
View file

@ -29,12 +29,13 @@
#include "logger.h"
#include "utils.h"
#include "route.h"
#include "xalloc.h"
int device_fd = -1;
char *device;
char *iface;
char ifrname[IFNAMSIZ];
char *device_info;
static char ifrname[IFNAMSIZ];
static char *device_info;
static int device_total_in = 0;
static int device_total_out = 0;
@ -46,12 +47,11 @@ bool setup_device(void)
cp();
if(!get_config_string
(lookup_config(config_tree, "Interface"), &iface))
iface = "eth0";
if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
iface = xstrdup("eth0");
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = iface;
device = xstrdup(iface);
device_info = _("raw socket");

5
src/solaris/device.c
View file

@ -31,13 +31,14 @@
#include "logger.h"
#include "net.h"
#include "utils.h"
#include "xalloc.h"
#define DEFAULT_DEVICE "/dev/tun"
int device_fd = -1;
char *device = NULL;
char *iface = NULL;
char *device_info = NULL;
static char *device_info = NULL;
static int device_total_in = 0;
static int device_total_out = 0;
@ -51,7 +52,7 @@ bool setup_device(void)
cp();
if(!get_config_string(lookup_config(config_tree, "Device"), &device))
device = DEFAULT_DEVICE;
device = xstrdup(DEFAULT_DEVICE);
if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));

4
src/uml_socket/device.c
View file

@ -36,9 +36,9 @@ static int request_fd = -1;
static int data_fd = -1;
static int write_fd = -1;
static int state = 0;
char *device;
char *device = NULL;
char *iface = NULL;
char *device_info;
static char *device_info;
extern char *identname;
extern bool running;