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Some cleanup

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This commit is contained in:
Matthias Schiffer 2012-08-28 16:47:35 +02:00
parent 33ef1a62c5
commit 46184653cf
1 changed files with 80 additions and 22 deletions
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102
ffvisd/ffvisd.c
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@ -26,15 +26,21 @@
#define _GNU_SOURCE
#include <libgen.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <sys/types.h>
#include <sys/stat.h>
#define ANNOUNCE_INTERVAL 20
@ -43,12 +49,15 @@
#define SYSFS_PATH_MAX 256
#define SYSFS_CLASS_NET "/sys/class/net"
#define FFD_MAGIC 0xffd
#define FFVISD_VERSION 0
//static char *mesh = "bat0";
typedef struct _ffvisd_eth_address_t {
uint8_t address[6];
uint8_t address[ETH_ALEN];
} ffvisd_eth_address_t;
typedef struct _ffvisd_ipv6_host_address_t {
@ -63,20 +72,39 @@ typedef struct _ffvisd_server_announce_t {
} ffvisd_server_announce_t;
typedef struct _ffvisd_announce_t {
uint32_t magic;
uint32_t version;
uint16_t magic;
uint16_t version;
uint32_t n_servers;
uint32_t reserved;
ffvisd_server_announce_t servers[];
} ffvisd_announce_t;
typedef enum _ffvisd_iftype_t {
IF_UNKNOWN = 0,
IF_WIRED,
IF_WIRELESS,
IF_VIRTUAL,
IF_BRIDGE,
IF_MESH,
IF_MAX
} ffvisd_iftype_t;
typedef struct _ffvisd_iface_t {
unsigned ifindex;
unsigned iftype;
ffvisd_iftype_t iftype;
char *ifname;
char *bridge_iface;
char *mesh_iface;
} ffvisd_iface_t;
static const char *ffvisd_iftype_names[IF_MAX] = {
[IF_UNKNOWN] = "unknown",
[IF_WIRED] = "wired",
[IF_WIRELESS] = "wireless",
[IF_VIRTUAL] = "virtual",
[IF_BRIDGE] = "bridge",
[IF_MESH] = "mesh",
};
typedef void (*iface_cb)(const ffvisd_iface_t *iface, void *arg);
@ -109,58 +137,88 @@ bool iface_file_read(const char *ifname, const char *file, const char *format, .
return ret;
}
ffvisd_iface_t* ffvisd_iface_new(const char *ifname) {
bool iface_file_exists(const char *ifname, const char *file) {
char filename[SYSFS_PATH_MAX];
snprintf(filename, SYSFS_PATH_MAX, SYSFS_CLASS_NET"/%s/%s", ifname, file);
struct stat st;
return (stat(filename, &st) == 0);
}
char* get_bridge(const char *ifname) {
char filename[SYSFS_PATH_MAX], filename2[SYSFS_PATH_MAX] = {0};
snprintf(filename, SYSFS_PATH_MAX, SYSFS_CLASS_NET"/%s/brport/bridge", ifname);
if (readlink(filename, filename2, sizeof(filename2)) < 0)
return NULL;
return strdup(basename(filename2));
}
ffvisd_iface_t* ffvisd_iface_new(const char *ifname, unsigned ifindex) {
ffvisd_iface_t *iface = calloc(1, sizeof(ffvisd_iface_t));
iface->ifname = strdup(ifname);
if (!iface_file_read(ifname, "ifindex", "%u", &iface->ifindex)) {
ffvisd_iface_free(iface);
return NULL;
}
iface->ifindex = ifindex;
if (!iface_file_read(ifname, "batman_adv/mesh_iface", "%as", &iface->mesh_iface) || !strcmp(iface->mesh_iface, "none")) {
free(iface->mesh_iface);
iface->mesh_iface = NULL;
}
iface->bridge_iface = get_bridge(ifname);
int type;
if (iface_file_read(ifname, "type", "%i", &type) && type == ARPHRD_ETHER) {
if(iface_file_exists(ifname, "mesh"))
iface->iftype = IF_MESH;
else if(iface_file_exists(ifname, "bridge"))
iface->iftype = IF_BRIDGE;
else if(iface_file_exists(ifname, "tun_flags"))
iface->iftype = IF_VIRTUAL;
else if(iface_file_exists(ifname, "wireless"))
iface->iftype = IF_WIRELESS;
else
iface->iftype = IF_WIRED;
}
return iface;
}
void ffvisd_iface_free(ffvisd_iface_t *iface) {
if (iface) {
free(iface->ifname);
free(iface->bridge_iface);
free(iface->mesh_iface);
free(iface);
}
}
void ffvisd_iface_foreach(iface_cb cb, void *arg) {
struct dirent **namelist;
struct if_nameindex *ifaces = if_nameindex();
int i, count = scandir(SYSFS_CLASS_NET, &namelist, NULL, NULL);
if (count < 0) {
fprintf(stderr, "error: scandir: %m");
if (!ifaces) {
fprintf(stderr, "error: if_nameindex: %m");
return;
}
for (i = 0; i < count; i++) {
ffvisd_iface_t *iface = ffvisd_iface_new(namelist[i]->d_name);
int i;
for (i = 0; ifaces[i].if_name; i++) {
ffvisd_iface_t *iface = ffvisd_iface_new(ifaces[i].if_name, ifaces[i].if_index);
if (iface)
cb(iface, arg);
ffvisd_iface_free(iface);
free(namelist[i]);
}
free(namelist);
if_freenameindex(ifaces);
}
void pr_iface_info(const ffvisd_iface_t *iface, void *arg) {
printf("Interface %s: ifindex=%i mesh_iface=%s iftype=%i\n", iface->ifname, iface->ifindex, iface->mesh_iface, iface->iftype);
printf("Interface %s: ifindex=%i bridge_iface=%s mesh_iface=%s iftype=%s\n", iface->ifname, iface->ifindex, iface->bridge_iface, iface->mesh_iface, ffvisd_iftype_names[iface->iftype]);
}