From: joeyh <joeyh>
Date: Wed, 8 Mar 2006 02:59:27 +0000 (+0000)
Subject: * Added ifinfo, by Benjamin BAYART (originally called ifcfg).
X-Git-Tag: 0.5~5
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e50ccc1b36213de52ae78c2703d391ea8941a7b1;p=moreutils

* Added ifinfo, by Benjamin BAYART (originally called ifcfg).
* Made ifinfo -Wall clean.
* Made ifinfo support -h and print usage on unknown options.
* Cleaned up ifinfo's behavior when asked to print info for nonexistant
  devices. Still needs improvement.
---

diff --git a/Makefile b/Makefile
index d950595..78d111c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
-BINS=isutf8 sponge
+BINS=isutf8 sponge ifdata
 PERLSCRIPTS=vidir vipe ts and not
-MANS=sponge.1 vidir.1 vipe.1 isutf8.1 ts.1 and.1 not.1
+MANS=sponge.1 vidir.1 vipe.1 isutf8.1 ts.1 and.1 not.1 ifdata.1
 CFLAGS=-O2 -g -Wall
 
 all: $(BINS) $(MANS)
@@ -25,5 +25,8 @@ isutf8.1: isutf8.docbook
 sponge.1: sponge.docbook
 	docbook2x-man sponge.docbook
 
+ifdata.1: ifdata.docbook
+	docbook2x-man ifdata.docbook
+
 %.1: %
 	pod2man --center=" " --release="moreutils" $< > $@;
diff --git a/README b/README
index 96c5222..243a080 100644
--- a/README
+++ b/README
@@ -15,6 +15,8 @@ and
 	print lines that are present in one file and another
 not
 	print lines that are present in one file but not another
+ifdata
+	get network interface info without parsing ifconfig output
 
 
 Your suggestions of additional tools to add to this collection are
diff --git a/debian/changelog b/debian/changelog
index 7777952..f40b9b5 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,13 @@
+moreutils (0.5) UNRELEASED; urgency=low
+
+  * Added ifdata, by Benjamin BAYART (originally called ifcfg).
+  * Made ifdata -Wall clean.
+  * Made ifdata support -h and print usage on unknown options.
+  * Cleaned up ifdata's behavior when asked to print info for nonexistant
+    devices. Still needs improvement.
+
+ -- Joey Hess <joeyh@debian.org>  Tue,  7 Mar 2006 21:54:45 -0500
+
 moreutils (0.4) unstable; urgency=low
 
   * Added versions of and(1) and not(1) that support arbitrary numbers of
diff --git a/debian/control b/debian/control
index 1a98b9e..44b6d2d 100644
--- a/debian/control
+++ b/debian/control
@@ -20,4 +20,4 @@ Description: additional unix utilities
   - vipe: edit a pipe using your text editor
   - and: print lines that are present in one file and another
   - not: print lines that are present in one file but not another
-		
+  - ifdata: get network interface info without parsing ifconfig output	
diff --git a/debian/copyright b/debian/copyright
index 6718bac..1f3a9a4 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -7,6 +7,10 @@ the GPL.
 spong is Copyright (C) 2006 by Tollef Fog Heen, under the terms of
 the GPL version 2. Name and concept by Colin Watson.
 
+ifdata is Copyright (C) 2002 by Benjamin BAYART, under the terms of
+the GPL. It was originally called ifcfg and has a web page here:
+http://edgard.dyn.fdn.fr/developpements/ifcfg.shtml
+
 Everything else is copyright 2006 by Joey Hess, under the terms of GPL.
 The full text of the GNU GPL can be found in /usr/share/common-licenses/GPL
 on Debian systems.
diff --git a/ifinfo.c b/ifinfo.c
new file mode 100644
index 0000000..c65ef16
--- /dev/null
+++ b/ifinfo.c
@@ -0,0 +1,604 @@
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <netdb.h>
+#include <sys/ioctl.h>
+#include <linux/sockios.h>
+#include <linux/if.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+//#include <linux/socket.h>
+
+#define DO_EXISTS 1
+#define DO_PEXISTS 2
+#define DO_PADDRESS 3
+#define DO_PMASK 4
+#define DO_PMTU 5
+#define DO_PCAST 6
+#define DO_PALL 7
+#define DO_PFLAGS 8
+#define DO_SINPACKETS 9
+#define DO_SINBYTES 10
+#define DO_SINERRORS 11
+#define DO_SINDROPS 12
+#define DO_SINALL 13
+#define DO_SINFIFO 14
+#define DO_SINFRAME 15
+#define DO_SINCOMPRESSES 16
+#define DO_SINMULTICAST 17
+#define DO_SOUTALL 18
+#define DO_SOUTBYTES 19
+#define DO_SOUTPACKETS 20
+#define DO_SOUTERRORS 21
+#define DO_SOUTDROPS 22
+#define DO_SOUTFIFO 23 
+#define DO_SOUTCOLLS 24 
+#define DO_SOUTCARRIER 25
+#define DO_SOUTMULTICAST 26
+#define DO_PNETWORK 27
+
+struct if_stat {
+	unsigned long long int in_packets;
+	unsigned long long int in_bytes;
+	unsigned long long int in_errors;
+	unsigned long long int in_drops;
+	unsigned long long int in_fifo;
+	unsigned long long int in_frame;
+	unsigned long long int in_compress;
+	unsigned long long int in_multicast;
+	unsigned long long int out_bytes;
+	unsigned long long int out_packets;
+	unsigned long long int out_errors;
+	unsigned long long int out_drops;
+	unsigned long long int out_fifo;
+	unsigned long long int out_colls;
+	unsigned long long int out_carrier;
+	unsigned long long int out_multicast;
+};
+
+
+void print_quad_ipv4(unsigned int i) {
+	printf("%d.%d.%d.%d",
+			i&0xff,
+			(i&0xff00)>>8,
+			(i&0xff0000)>>16,
+			(i&0xff000000)>>24);
+}
+
+void print_quad_ipv6(uint16_t *a) {
+	int i;
+	for (i=0; i<7; i++) {
+		printf("%04x:",a[i]);
+	}
+	printf("%04x",a[i]);
+}
+
+void print_quad(struct sockaddr *adr) {
+	switch (adr->sa_family) {
+		case AF_INET:
+			print_quad_ipv4(((struct sockaddr_in*)adr)->sin_addr.s_addr);
+			break;
+		case AF_INET6:
+			print_quad_ipv6(((struct sockaddr_in6*)adr)->sin6_addr.s6_addr16);
+			break;
+		default:
+			printf("NON-IP");
+			break;
+	}
+}
+
+#define PREPARE_SOCK(iface)	int sock; \
+				static struct ifreq req; \
+				int res; \
+				sock=socket(PF_INET,SOCK_DGRAM,IPPROTO_IP); \
+				strcpy(req.ifr_name,iface)
+#define CALL_IOCTL(call)	res=ioctl(sock,call,&req)
+#define END_SOCK		close(sock)
+#define CALL_ERROR(todo)	if (res==-1) { perror("ioctl"); close(sock); todo; }
+
+int if_exists(char *iface) {
+	PREPARE_SOCK(iface);
+	CALL_IOCTL(SIOCGIFFLAGS);
+	if (res==-1 && errno==ENODEV) {
+		END_SOCK;
+		return 0;
+	}
+	CALL_ERROR(return 0);
+	END_SOCK;
+	return 1;
+}
+
+#define PRINT_IF(cond,tell) if (req.ifr_flags & cond) printf(tell); else printf("No "tell)
+
+void if_flags(char *iface) {
+	PREPARE_SOCK(iface);
+	CALL_IOCTL(SIOCGIFFLAGS);
+	CALL_ERROR(return);
+	PRINT_IF(IFF_UP,"Up\n");
+	PRINT_IF(IFF_BROADCAST,"Broadcast\n");
+	PRINT_IF(IFF_DEBUG,"Debugging\n");
+	PRINT_IF(IFF_LOOPBACK,"Loopback\n");
+	PRINT_IF(IFF_POINTOPOINT,"Ppp\n");
+	PRINT_IF(IFF_NOTRAILERS,"No-trailers\n");
+	PRINT_IF(IFF_RUNNING,"Running\n");
+	PRINT_IF(IFF_NOARP,"No-arp\n");
+	PRINT_IF(IFF_PROMISC,"Promiscuous\n");
+	PRINT_IF(IFF_ALLMULTI,"All-multicast\n");
+	PRINT_IF(IFF_MASTER,"Load-master\n");
+	PRINT_IF(IFF_SLAVE,"Load-slave\n");
+	PRINT_IF(IFF_MULTICAST,"Multicast\n");
+	PRINT_IF(IFF_PORTSEL,"Port-select\n");
+	PRINT_IF(IFF_AUTOMEDIA,"Auto-detect\n");
+	PRINT_IF(IFF_DYNAMIC,"Dynaddr\n");
+	PRINT_IF(0xffff0000,"Unknown-flags");
+}
+
+struct sockaddr *if_addr(char *iface) {
+	PREPARE_SOCK(iface);
+	CALL_IOCTL(SIOCGIFADDR);
+	if (res==-1 && errno==EADDRNOTAVAIL) {
+		return &req.ifr_addr;
+	}
+	CALL_ERROR(return NULL);
+	END_SOCK;
+	return &req.ifr_addr;
+}
+
+struct sockaddr *if_mask(char *iface) {
+	PREPARE_SOCK(iface);
+	CALL_IOCTL(SIOCGIFNETMASK);
+	if (res==-1 && errno==EADDRNOTAVAIL) {
+		return &req.ifr_addr;
+	}
+	CALL_ERROR(return NULL);
+	END_SOCK;
+	return &req.ifr_addr;
+}
+
+struct sockaddr *if_network(char *iface) {
+	struct sockaddr *res;
+	res=if_mask(iface);
+	long int mask=((struct sockaddr_in*)res)->sin_addr.s_addr;
+	res=if_addr(iface);
+	((struct sockaddr_in*)res)->sin_addr.s_addr &= mask;
+	return res;
+}
+
+struct sockaddr *if_bcast(char *iface) {
+	PREPARE_SOCK(iface);
+	CALL_IOCTL(SIOCGIFBRDADDR);
+	if (res==-1 && errno==EADDRNOTAVAIL) {
+		return &req.ifr_addr;
+	}
+	CALL_ERROR(return NULL);
+	END_SOCK;
+	return &req.ifr_addr;
+}
+
+int if_mtu(char *iface) {
+	PREPARE_SOCK(iface);
+	CALL_IOCTL(SIOCGIFMTU);
+	CALL_ERROR(return 0);
+	END_SOCK;
+	return req.ifr_mtu;
+}
+
+#define START 1
+#define SKIP_LINE 2
+#define START_LINE 3
+#define START_IFNAME 4
+#define IFACE_FOUND 5
+#define RX_BYTES 6
+#define WAIT_RX_PACKETS 7
+#define RX_PACKETS 8
+#define WAIT_RX_ERRORS 9
+#define RX_ERRORS 10
+#define WAIT_RX_DROPS 11
+#define RX_DROPS 12
+#define WAIT_RX_FIFO 13
+#define RX_FIFO 14
+#define WAIT_RX_FRAME 15
+#define RX_FRAME 16
+#define WAIT_RX_COMPRESS 17
+#define RX_COMPRESS 18
+#define WAIT_RX_MULTICAST 19
+#define RX_MULTICAST 20
+#define WAIT_TX_BYTES 21
+#define TX_BYTES 22
+#define WAIT_TX_PACKETS 23
+#define TX_PACKETS 24
+#define WAIT_TX_ERRORS 25
+#define TX_ERRORS 26
+#define WAIT_TX_DROPS 27
+#define TX_DROPS 28
+#define WAIT_TX_FIFO 29
+#define TX_FIFO 30
+#define WAIT_TX_COLLS 31
+#define TX_COLLS 32
+#define WAIT_TX_CARRIER 33
+#define TX_CARRIER 34
+#define WAIT_TX_MULTICAST 35
+#define TX_MULTICAST 36
+
+#define FIRST_DIGIT(val,digit) do {val=digit-'0'; } while(0)
+#define NEXT_DIGIT(val,digit) do {val*=10; val+=digit-'0'; } while(0)
+
+#define READ_INT(cas,val,next)	\
+	case WAIT_##cas: \
+		if (isdigit(buffer[i])) { \
+			state=cas; \
+			FIRST_DIGIT(val,buffer[i]); \
+		} \
+		break; \
+	case cas: \
+		if (isdigit(buffer[i])) \
+			NEXT_DIGIT(val,buffer[i]); \
+		else \
+			state=next; \
+		break;
+
+
+//#define FIRST_DIGIT(val,digit) do {val=digit-'0'; printf(#val " = %d\n",val); } while(0)
+//#define NEXT_DIGIT(val,digit) do {val*=10; val+=digit-'0'; printf(#val " -> %d\n",val);} while(0)
+struct if_stat *get_stats(char *iface) {
+	int fd;
+	unsigned char buffer[4096];
+	int i,j=0;
+	int state=START;
+	int len;
+	struct if_stat *res=malloc(sizeof(struct if_stat));
+	fd=open("/proc/net/dev",O_RDONLY);
+	if (fd==-1) {
+		perror("open");
+		return NULL;
+	}
+	while ((len=read(fd,buffer,4096))) {
+		for (i=0; i<len; i++) {
+			switch (state) {
+				case START:
+					if (buffer[i]=='\n') state=SKIP_LINE;
+					break;
+				case SKIP_LINE:
+					if (buffer[i]=='\n') state=START_LINE;
+					break;
+				case START_LINE:
+					if (buffer[i]!=' ') {
+						if (buffer[i]==iface[0]) {
+							state=START_IFNAME;
+							j=1;
+						} else
+							state=SKIP_LINE;
+					}
+					break;
+				case START_IFNAME:
+					if (buffer[i]==':' && iface[j]==0)
+						state=IFACE_FOUND;
+					else if (buffer[i]==iface[j])
+						j++;
+					else
+						state=SKIP_LINE;
+					break;
+				case IFACE_FOUND:
+					if (isdigit(buffer[i])) {
+						state=RX_BYTES;
+						FIRST_DIGIT(res->in_bytes,buffer[i]);
+					}
+					break;
+				case RX_BYTES:
+					if (isdigit(buffer[i]))
+						NEXT_DIGIT(res->in_bytes,buffer[i]);
+					else
+						state=WAIT_RX_PACKETS;
+					break;
+				READ_INT(RX_PACKETS,res->in_packets,WAIT_RX_ERRORS);
+				READ_INT(RX_ERRORS,res->in_errors,WAIT_RX_DROPS);
+				READ_INT(RX_DROPS,res->in_drops,WAIT_RX_FIFO);
+				READ_INT(RX_FIFO,res->in_fifo,WAIT_RX_FRAME);
+				READ_INT(RX_FRAME,res->in_frame,WAIT_RX_COMPRESS);
+				READ_INT(RX_COMPRESS,res->in_compress,WAIT_RX_MULTICAST);
+				READ_INT(RX_MULTICAST,res->in_multicast,WAIT_TX_BYTES);
+				READ_INT(TX_BYTES,res->out_bytes,WAIT_TX_PACKETS);
+				READ_INT(TX_PACKETS,res->out_packets,WAIT_TX_ERRORS);
+				READ_INT(TX_ERRORS,res->out_errors,WAIT_TX_DROPS);
+				READ_INT(TX_DROPS,res->out_drops,WAIT_TX_FIFO);
+				READ_INT(TX_FIFO,res->out_fifo,WAIT_TX_COLLS);
+				READ_INT(TX_COLLS,res->out_colls,WAIT_TX_CARRIER);
+				READ_INT(TX_CARRIER,res->out_carrier,WAIT_TX_MULTICAST);
+				READ_INT(TX_MULTICAST,res->out_carrier,SKIP_LINE);
+				default:
+					fprintf(stderr,"Mon totomate est po bon!\n");
+					break;
+			}
+		}
+	}
+	return res;
+}
+
+void usage(char *name) {
+	fprintf(stderr,"Usage: %s [options] iface\n",name);
+	fprintf(stderr,"    -e   Says if iface exists or not\n"
+		       "    -p   Print out the whole config of iface\n"
+		       "    -pe  Print out yes or no according to existence\n"
+		       "    -pa  Print out the address\n"
+		       "    -pn  Print netmask\n"
+		       "    -pN  Print network address\n"
+		       "    -pb  Print broadcast\n"
+		       "    -pm  Print mtu\n"
+		       "    -pf  Print flags\n"
+		       "    -si  Print all statistics on input\n"
+		       "    -sip Print # of in packets\n"
+		       "    -sib Print # of in bytes\n"
+		       "    -sie Print # of in errors\n"
+		       "    -sid Print # of in drops\n"
+		       "    -sif Print # of in fifo overruns\n"
+		       "    -sic Print # of in compress\n"
+		       "    -sim Print # of in multicast\n"
+		       "    -so  Print all statistics on output\n"
+		       "    -sop Print # of out packets\n"
+		       "    -sob Print # of out bytes\n"
+		       "    -soe Print # of out errors\n"
+		       "    -sod Print # of out drops\n"
+		       "    -sof Print # of out fifo overruns\n"
+		       "    -sox Print # of out collisions\n"
+		       "    -soc Print # of out carrier loss\n"
+		       "    -som Print # of out multicast\n");
+}
+
+void add_do(int *ndo, int **todo, int act) {
+	*todo=realloc(*todo,(*ndo+1)*sizeof(int));
+	(*todo)[*ndo]=act;
+	*ndo+=1;
+}
+
+#define PRINT_OR_ERR(adr) if (adr) print_quad(adr); else { fprintf(stderr, "Error\n"); exit(1); }
+
+void please_do(int ndo, int *todo, char *ifname) {
+	int i;
+	struct sockaddr *sadr;
+	struct if_stat *stats=NULL;
+	if (!ndo) return;
+//	printf("J'ai %d actions a réaliser\n",ndo);
+	for (i=0; i<ndo; i++) {
+		switch (todo[i]) {
+			case DO_EXISTS:
+				if (if_exists(ifname)) {
+					exit(0);
+				} else {
+					exit(1);
+				}
+				break;
+			case DO_PEXISTS:
+				if (if_exists(ifname)) {
+					printf("yes");
+				} else {
+					printf("no");
+				}
+				break;
+			case DO_PADDRESS:
+				sadr=if_addr(ifname);
+				PRINT_OR_ERR(sadr);
+				break;
+			case DO_PFLAGS:
+				if_flags(ifname);
+				break;
+			case DO_PMASK:
+				sadr=if_mask(ifname);
+				PRINT_OR_ERR(sadr);
+				break;
+			case DO_PCAST:
+				sadr=if_bcast(ifname);
+				PRINT_OR_ERR(sadr);
+				break;
+			case DO_PMTU:
+				printf("%d",if_mtu(ifname));
+				break;
+			case DO_PNETWORK:
+				sadr=if_network(ifname);
+				PRINT_OR_ERR(sadr);
+				break;
+			case DO_PALL:
+				sadr=if_addr(ifname);
+				PRINT_OR_ERR(sadr);
+				printf(" ");
+				sadr=if_mask(ifname);
+				PRINT_OR_ERR(sadr);
+				printf(" ");
+				sadr=if_bcast(ifname);
+				PRINT_OR_ERR(sadr);
+				printf(" ");
+				printf("%d",if_mtu(ifname));
+				break;
+			case DO_SINPACKETS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_packets);
+				break;
+			case DO_SINBYTES:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_bytes);
+				break;
+			case DO_SINERRORS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_errors);
+				break;
+			case DO_SINDROPS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_drops);
+				break;
+			case DO_SINFIFO:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_fifo);
+				break;
+			case DO_SINFRAME:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_frame);
+				break;
+			case DO_SINCOMPRESSES:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_compress);
+				break;
+			case DO_SINMULTICAST:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->in_multicast);
+				break;
+			case DO_SINALL:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu %llu %llu %llu %llu %llu %llu %llu",
+						stats->in_packets,
+						stats->in_bytes,
+						stats->in_errors,
+						stats->in_drops,
+						stats->in_fifo,
+						stats->in_frame,
+						stats->in_compress,
+						stats->in_multicast);
+				break;
+			case DO_SOUTBYTES:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_bytes);
+				break;
+			case DO_SOUTPACKETS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_packets);
+				break;
+			case DO_SOUTERRORS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_errors);
+				break;
+			case DO_SOUTDROPS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_drops);
+				break;
+			case DO_SOUTFIFO:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_fifo);
+				break;
+			case DO_SOUTCOLLS:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_colls);
+				break;
+			case DO_SOUTCARRIER:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_carrier);
+				break;
+			case DO_SOUTMULTICAST:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu",stats->out_multicast);
+				break;
+			case DO_SOUTALL:
+				if (!stats) stats=get_stats(ifname);
+				printf("%llu %llu %llu %llu %llu %llu %llu %llu",
+						stats->out_packets,
+						stats->out_bytes,
+						stats->out_errors,
+						stats->out_drops,
+						stats->out_fifo,
+						stats->out_colls,
+						stats->out_carrier,
+						stats->out_multicast);
+				break;
+			default:
+				printf("Je comprends pas ce que je dois faire: %d\n",todo[i]);
+				break;
+		}
+		printf("\n");
+	}
+}
+
+int main(int argc, char *argv[]) {
+	int ndo=0;
+	int *todo=NULL;
+	char *me=*argv;
+	char *ifname=NULL;
+	int narg=0;
+	/*
+	print_quad(&res.ifr_addr);
+	s=socket(PF_INET6,SOCK_DGRAM,IPPROTO_IP);
+	ret=ioctl(s,SIOCGIFADDR,&res);
+	print_quad(&res.ifr_addr);
+	*/
+	if (argc==1) {
+		usage(me);
+		return 1;
+	}
+	narg++;
+	while (narg<argc) {
+		if (!strcmp(argv[narg],"-e")) {
+			add_do(&ndo,&todo,DO_EXISTS);
+		} else if (!strcmp(argv[narg],"-p")) {
+			add_do(&ndo,&todo,DO_PALL);
+		} else if (!strcmp(argv[narg],"-pa")) {
+			add_do(&ndo,&todo,DO_PADDRESS);
+		} else if (!strcmp(argv[narg],"-pn")) {
+			add_do(&ndo,&todo,DO_PMASK);
+		} else if (!strcmp(argv[narg],"-pN")) {
+			add_do(&ndo,&todo,DO_PNETWORK);
+		} else if (!strcmp(argv[narg],"-pb")) {
+			add_do(&ndo,&todo,DO_PCAST);
+		} else if (!strcmp(argv[narg],"-pm")) {
+			add_do(&ndo,&todo,DO_PMTU);
+		} else if (!strcmp(argv[narg],"-pe")) {
+			add_do(&ndo,&todo,DO_PEXISTS);
+		} else if (!strcmp(argv[narg],"-pf")) {
+			add_do(&ndo,&todo,DO_PFLAGS);
+		} else if (!strcmp(argv[narg],"-si")) {
+			add_do(&ndo,&todo,DO_SINALL);
+		} else if (!strcmp(argv[narg],"-sip")) {
+			add_do(&ndo,&todo,DO_SINPACKETS);
+		} else if (!strcmp(argv[narg],"-sib")) {
+			add_do(&ndo,&todo,DO_SINBYTES);
+		} else if (!strcmp(argv[narg],"-sie")) {
+			add_do(&ndo,&todo,DO_SINERRORS);
+		} else if (!strcmp(argv[narg],"-sid")) {
+			add_do(&ndo,&todo,DO_SINDROPS);
+		} else if (!strcmp(argv[narg],"-sif")) {
+			add_do(&ndo,&todo,DO_SINFIFO);
+		} else if (!strcmp(argv[narg],"-sic")) {
+			add_do(&ndo,&todo,DO_SINCOMPRESSES);
+		} else if (!strcmp(argv[narg],"-sim")) {
+			add_do(&ndo,&todo,DO_SINMULTICAST);
+		} else if (!strcmp(argv[narg],"-so")) {
+			add_do(&ndo,&todo,DO_SOUTALL);
+		} else if (!strcmp(argv[narg],"-sop")) {
+			add_do(&ndo,&todo,DO_SOUTPACKETS);
+		} else if (!strcmp(argv[narg],"-sob")) {
+			add_do(&ndo,&todo,DO_SOUTBYTES);
+		} else if (!strcmp(argv[narg],"-soe")) {
+			add_do(&ndo,&todo,DO_SOUTERRORS);
+		} else if (!strcmp(argv[narg],"-sod")) {
+			add_do(&ndo,&todo,DO_SOUTDROPS);
+		} else if (!strcmp(argv[narg],"-sof")) {
+			add_do(&ndo,&todo,DO_SOUTFIFO);
+		} else if (!strcmp(argv[narg],"-sox")) {
+			add_do(&ndo,&todo,DO_SOUTCOLLS);
+		} else if (!strcmp(argv[narg],"-soc")) {
+			add_do(&ndo,&todo,DO_SOUTCARRIER);
+		} else if (!strcmp(argv[narg],"-som")) {
+			add_do(&ndo,&todo,DO_SOUTMULTICAST);
+		} else if (!strcmp(argv[narg],"-som")) {
+			usage(me);
+			return 1;
+		} else if (argv[narg][0] == '-') {
+			usage(me);
+			return 1;
+		} else {
+			ifname=argv[narg];
+			narg++;
+			break;
+		}
+		narg++;
+	}
+	if (narg<argc || ifname==NULL) {
+		usage(me);
+		return 1;
+	}
+//	printf("Je travaille sur l'interface %s\n",ifname);
+	please_do(ndo,todo,ifname);
+	return 0;
+}
+
+
diff --git a/ifinfo.docbook b/ifinfo.docbook
new file mode 100644
index 0000000..42d0855
--- /dev/null
+++ b/ifinfo.docbook
@@ -0,0 +1,265 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+
+Copyright 2006 Joey Hess
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2 of the License, or (at your
+option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+-->
+
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.4//EN"
+"file:///usr/share/xml/docbook/schema/dtd/4.4/docbookx.dtd"
+[]>
+
+<refentry>
+
+  <refentryinfo>
+    <author>
+      <firstname>Joey</firstname>
+      <surname>Hess</surname>
+    </author>
+    <date>2006-03-07</date>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>ifdata</refentrytitle>
+    <manvolnum>1</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>ifdata</refname> 
+    <refpurpose>get network interface info without parsing ifconfig output</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>ifdata</command>
+      <arg>options</arg>
+      <arg><replaceable>iface</replaceable></arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+  
+  <refsect1>
+    <title>DESCRIPTION</title>
+    
+    <para><command>ifdata</command> can be used to check for the existence
+    of a network interface, or to get information abut the interface, such
+    as its IP address. Unlike <command>ifconfig</command> or <command>ip</command>,
+    <command>ifdata</command> has simple to parse output that is designed
+    to be easily used by a shell script.</para>
+    
+  </refsect1>
+  
+  <refsect1>
+    <title>OPTIONS</title>
+    
+    <variablelist>
+    
+        <varlistentry>
+            <term><option>-h</option></term>
+            <listitem>
+                <para>Print out a help summary.</para>
+            </listitem>
+        </varlistentry>
+    
+        <varlistentry>
+            <term><option>-e</option></term>
+            <listitem>
+                <para>Test to see if the interface exists. ifdata will exit
+		nonzero if the interface does not exist.</para>
+            </listitem>
+        </varlistentry>
+        
+	<varlistentry>
+            <term><option>-p</option></term>
+            <listitem>
+                <para>Prints out the whole configuration of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-pe</option></term>
+            <listitem>
+                <para>Prints "yes" or "no" if the interface exists or not.</para>
+            </listitem>
+        </varlistentry>
+    
+	<varlistentry>
+            <term><option>-pa</option></term>
+            <listitem>
+                <para>Prints the IPv4 address of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-pn</option></term>
+            <listitem>
+                <para>Prints the netmask of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-pN</option></term>
+            <listitem>
+                <para>Prints the network address of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-pb</option></term>
+            <listitem>
+                <para>Prints the broadcast address of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-pm</option></term>
+            <listitem>
+                <para>Prints the MTU of the interface.</para>
+            </listitem>
+        </varlistentry>
+
+	<varlistentry>
+            <term><option>-pf</option></term>
+            <listitem>
+                <para>Prints the flags of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-si</option></term>
+            <listitem>
+                <para>Prints out all the input statistics of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sip</option></term>
+            <listitem>
+                <para>Prints the number of input packets.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sib</option></term>
+            <listitem>
+                <para>Prints the number of input bytes.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sie</option></term>
+            <listitem>
+                <para>Prints the number of input errors.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sid</option></term>
+            <listitem>
+                <para>Prints the number of input drops.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sif</option></term>
+            <listitem>
+                <para>Prints the number of input fifo overruns.</para>
+            </listitem>
+        </varlistentry>
+
+	<varlistentry>
+            <term><option>-sic</option></term>
+            <listitem>
+                <para>Print the number of input compress.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sim</option></term>
+            <listitem>
+                <para>Prints the number of input multicast.</para>
+            </listitem>
+        </varlistentry>
+
+	<varlistentry>
+            <term><option>-so</option></term>
+            <listitem>
+                <para>Prints out all the output statistics of the interface.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sop</option></term>
+            <listitem>
+                <para>Prints the number of output packets.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sob</option></term>
+            <listitem>
+                <para>Prints the number of output bytes.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-soe</option></term>
+            <listitem>
+                <para>Prints the number of output errors.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sod</option></term>
+            <listitem>
+                <para>Prints the number of output drops.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-sof</option></term>
+            <listitem>
+                <para>Prints the number of output fifo overruns.</para>
+            </listitem>
+        </varlistentry>
+
+	<varlistentry>
+            <term><option>-sox</option></term>
+            <listitem>
+                <para>Print the number of output collisions.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-soc</option></term>
+            <listitem>
+                <para>Prints the number of output carrier loss.</para>
+            </listitem>
+        </varlistentry>
+	
+	<varlistentry>
+            <term><option>-som</option></term>
+            <listitem>
+                <para>Prints the number of output multicast.</para>
+            </listitem>
+        </varlistentry>
+
+    </variablelist>
+    
+  </refsect1>
+  
+</refentry>