23399440985

Committed 22 Mar 2026 08:45AM UTC coverage: 87.975% (-0.06%) from 88.037%

Build # 23399440985

Build Type

Pull #463

github

Committed by

web-flow

Commit Message

Merge 4bcab436b into b8626092d

Pull Request Pull Request #463: New option --oiface for outgoing interface

Coverage Stats

49 of 59 new or added lines in 3 files covered. (83.05%)

14 existing lines in 2 files now uncovered.

1668 of 1896 relevant lines covered (87.97%)

346.15 hits per line

Source File
Press 'n' to go to next uncovered line, 'b' for previous

87.5

/src/socket4.c

/*
 * fping: fast-ping, file-ping, favorite-ping, funky-ping
 *
 *   Ping a list of target hosts in a round robin fashion.
 *   A better ping overall.
 *
 * fping website:  http://www.fping.org
 *
 * Current maintainer of fping: David Schweikert
 * Please send suggestions and patches to: david@schweikert.ch
 *
 *
 * Original author:  Roland Schemers  <schemers@stanford.edu>
 * IPv6 Support:     Jeroen Massar    <jeroen@unfix.org / jeroen@ipng.nl>
 * Improved main loop: David Schweikert <david@schweikert.ch>
 * Debian Merge, TOS settings: Tobi Oetiker <tobi@oetiker.ch>
 * Bugfixes, byte order & senseful seq.-numbers: Stephan Fuhrmann (stephan.fuhrmann AT 1und1.de)
 *
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by Stanford University.  The name of the University may not be used
 * to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#include "config.h"
#include "fping.h"
#include "flags.h"

#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <net/if.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <time.h>

char* ping_buffer_ipv4 = 0;
size_t ping_pkt_size_ipv4;

/* Interface index for outgoing packets (0 = not set, use routing table) */
static int outgoing_iface_idx_ipv4 = 0;

int open_ping_socket_ipv4(int *socktype)
{
    struct protoent* proto;
    int s;

    /* confirm that ICMP is available on this machine */
    if ((proto = getprotobyname("icmp")) == NULL)
        crash_and_burn("icmp: unknown protocol");

    /* create raw socket for ICMP calls (ping) */
    *socktype = SOCK_RAW;
    s = socket(AF_INET, *socktype, proto->p_proto);
    if (s < 0) {
        /* try non-privileged icmp (works on Mac OSX without privileges, for example) */
        *socktype = SOCK_DGRAM;
        s = socket(AF_INET, *socktype, proto->p_proto);
        if (s < 0) {
            return -1;
        }
    }

    /* Make sure that we use non-blocking IO */
    {
        int flags;

        if ((flags = fcntl(s, F_GETFL, 0)) < 0)
            perror("fcntl");

        if (fcntl(s, F_SETFL, flags | O_NONBLOCK) < 0)
            perror("fcntl");
    }

    return s;
}

void socket_set_outgoing_iface_ipv4(int s, const char *iface_name)
{
    unsigned int idx = if_nametoindex(iface_name);
    if (idx == 0) {
        fprintf(stderr, "fping: unknown interface '%s'\n", iface_name);
        exit(1);
    }
    outgoing_iface_idx_ipv4 = (int)idx;

    int on = 1;
    if (setsockopt(s, IPPROTO_IP, IP_PKTINFO, &on, sizeof(on)) < 0) {
        perror("setsockopt IP_PKTINFO");
        exit(1);
    }
}

void init_ping_buffer_ipv4(size_t ping_data_size)
{
    /* allocate ping buffer */
    ping_pkt_size_ipv4 = ping_data_size + ICMP_MINLEN;
    ping_buffer_ipv4 = (char*)calloc(1, ping_pkt_size_ipv4);
    if (!ping_buffer_ipv4)
        crash_and_burn("can't malloc ping packet");
}

void socket_set_src_addr_ipv4(int s, struct in_addr* src_addr, int *ident)
{
    struct sockaddr_in sa;
    socklen_t len = sizeof(sa);

    memset(&sa, 0, len);
    sa.sin_family = AF_INET;
    sa.sin_addr = *src_addr;
    if (bind(s, (struct sockaddr*)&sa, len) < 0)
        errno_crash_and_burn("cannot bind source address");

    if (ident) {
        memset(&sa, 0, len);
        if (getsockname(s, (struct sockaddr *)&sa, &len) < 0)
            errno_crash_and_burn("can't get ICMP socket identity");

        if (sa.sin_port)
            *ident = sa.sin_port;
    }
}

unsigned short calcsum(unsigned short* buffer, int length)
{
    unsigned long sum;

    /* initialize sum to zero and loop until length (in words) is 0 */
    for (sum = 0; length > 1; length -= 2) /* sizeof() returns number of bytes, we're interested in number of words */
        sum += *buffer++; /* add 1 word of buffer to sum and proceed to the next */

    /* we may have an extra byte */
    if (length == 1)
        sum += (char)*buffer;

    sum = (sum >> 16) + (sum & 0xFFFF); /* add high 16 to low 16 */
    sum += (sum >> 16); /* add carry */
    return ~sum;
}

int socket_sendto_ping_ipv4(int s, struct sockaddr* saddr, socklen_t saddr_len, uint16_t icmp_seq_nr, uint16_t icmp_id_nr, uint8_t icmp_proto)
{
    struct icmp* icp;
    struct timespec tsorig;
    long tsorig_ms;
    int n;

    icp = (struct icmp*)ping_buffer_ipv4;

    icp->icmp_type = icmp_proto;
    if(icmp_proto == ICMP_TSTAMP) {
        clock_gettime(CLOCK_REALTIME, &tsorig);
        tsorig_ms = (tsorig.tv_sec % (24*60*60)) * 1000 + tsorig.tv_nsec / 1000000;
        icp->icmp_otime = htonl(tsorig_ms);
        icp->icmp_rtime = 0;
        icp->icmp_ttime = 0;
    }
    icp->icmp_code = 0;
    icp->icmp_cksum = 0;
    icp->icmp_seq = htons(icmp_seq_nr);
    icp->icmp_id = icmp_id_nr;

    if (opt_random_data_on) {
        for (n = ((char*)&icp->icmp_data - (char*)icp); n < ping_pkt_size_ipv4; ++n) {
            ping_buffer_ipv4[n] = random() & 0xFF;
        }
    }

    icp->icmp_cksum = calcsum((unsigned short*)icp, ping_pkt_size_ipv4);

    if (outgoing_iface_idx_ipv4 > 0) {
        struct iovec iov = {
            .iov_base = icp,
            .iov_len  = ping_pkt_size_ipv4
        };

        char cmsg_buf[CMSG_SPACE(sizeof(struct in_pktinfo))];
        memset(cmsg_buf, 0, sizeof(cmsg_buf));

        struct msghdr msg = {
            .msg_name       = saddr,
            .msg_namelen    = saddr_len,
            .msg_iov        = &iov,
            .msg_iovlen     = 1,
            .msg_control    = cmsg_buf,
            .msg_controllen = sizeof(cmsg_buf),
            .msg_flags      = 0
        };

        struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
        cmsg->cmsg_level = IPPROTO_IP;
        cmsg->cmsg_type  = IP_PKTINFO;
        cmsg->cmsg_len   = CMSG_LEN(sizeof(struct in_pktinfo));

        struct in_pktinfo *pktinfo = (struct in_pktinfo *)CMSG_DATA(cmsg);
        memset(pktinfo, 0, sizeof(*pktinfo));
        pktinfo->ipi_ifindex = outgoing_iface_idx_ipv4;

        n = sendmsg(s, &msg, 0);
    } else {
        n = sendto(s, icp, ping_pkt_size_ipv4, 0, saddr, saddr_len);
    }

    return n;
}

1	/*
2	* fping: fast-ping, file-ping, favorite-ping, funky-ping
3	*
4	* Ping a list of target hosts in a round robin fashion.
5	* A better ping overall.
6	*
7	* fping website: http://www.fping.org
8	*
9	* Current maintainer of fping: David Schweikert
10	* Please send suggestions and patches to: david@schweikert.ch
11	*
12	*
13	* Original author: Roland Schemers <schemers@stanford.edu>
14	* IPv6 Support: Jeroen Massar <jeroen@unfix.org / jeroen@ipng.nl>
15	* Improved main loop: David Schweikert <david@schweikert.ch>
16	* Debian Merge, TOS settings: Tobi Oetiker <tobi@oetiker.ch>
17	* Bugfixes, byte order & senseful seq.-numbers: Stephan Fuhrmann (stephan.fuhrmann AT 1und1.de)
18	*
19	*
20	* Redistribution and use in source and binary forms are permitted
21	* provided that the above copyright notice and this paragraph are
22	* duplicated in all such forms and that any documentation,
23	* advertising materials, and other materials related to such
24	* distribution and use acknowledge that the software was developed
25	* by Stanford University. The name of the University may not be used
26	* to endorse or promote products derived from this software without
27	* specific prior written permission.
28	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
29	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
30	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
31	*/
32
33	#include "config.h"
34	#include "fping.h"
35	#include "flags.h"
36
37	#include <fcntl.h>
38	#include <netdb.h>
39	#include <netinet/in.h>
40	#include <netinet/in_systm.h>
41	#include <netinet/ip.h>
42	#include <netinet/ip_icmp.h>
43	#include <net/if.h>
44	#include <stdio.h>
45	#include <stdlib.h>
46	#include <string.h>
47	#include <sys/socket.h>
48	#include <time.h>
49
50	char* ping_buffer_ipv4 = 0;
51	size_t ping_pkt_size_ipv4;
52
53	/* Interface index for outgoing packets (0 = not set, use routing table) */
54	static int outgoing_iface_idx_ipv4 = 0;
55
56	int open_ping_socket_ipv4(int *socktype)	881✔
57	{
58	struct protoent* proto;
59	int s;
60
61	/* confirm that ICMP is available on this machine */
62	if ((proto = getprotobyname("icmp")) == NULL)	881✔
UNCOV 63	crash_and_burn("icmp: unknown protocol");	×
64
65	/* create raw socket for ICMP calls (ping) */
66	*socktype = SOCK_RAW;	881✔
67	s = socket(AF_INET, *socktype, proto->p_proto);	881✔
68	if (s < 0) {	881✔
69	/* try non-privileged icmp (works on Mac OSX without privileges, for example) */
70	*socktype = SOCK_DGRAM;	12✔
71	s = socket(AF_INET, *socktype, proto->p_proto);	12✔
72	if (s < 0) {	12✔
UNCOV 73	return -1;	×
74	}
75	}
76
77	/* Make sure that we use non-blocking IO */
78	{
79	int flags;
80
81	if ((flags = fcntl(s, F_GETFL, 0)) < 0)	881✔
UNCOV 82	perror("fcntl");	×
83
84	if (fcntl(s, F_SETFL, flags \| O_NONBLOCK) < 0)	881✔
UNCOV 85	perror("fcntl");	×
86	}
87
88	return s;	881✔
89	}	239✔
90
91	void socket_set_outgoing_iface_ipv4(int s, const char *iface_name)	4✔
92	{
93	unsigned int idx = if_nametoindex(iface_name);	4✔
94	if (idx == 0) {	4✔
NEW 95	fprintf(stderr, "fping: unknown interface '%s'\n", iface_name);	×
NEW 96	exit(1);	×
97	}
98	outgoing_iface_idx_ipv4 = (int)idx;	4✔
99
100	int on = 1;	4✔
101	if (setsockopt(s, IPPROTO_IP, IP_PKTINFO, &on, sizeof(on)) < 0) {	4✔
NEW 102	perror("setsockopt IP_PKTINFO");	×
NEW 103	exit(1);	×
104	}
105	}	4✔
106
107	void init_ping_buffer_ipv4(size_t ping_data_size)	392✔
108	{
109	/* allocate ping buffer */
110	ping_pkt_size_ipv4 = ping_data_size + ICMP_MINLEN;	392✔
111	ping_buffer_ipv4 = (char*)calloc(1, ping_pkt_size_ipv4);	392✔
112	if (!ping_buffer_ipv4)	392✔
UNCOV 113	crash_and_burn("can't malloc ping packet");	×
114	}	392✔
115
116	void socket_set_src_addr_ipv4(int s, struct in_addr* src_addr, int *ident)	18✔
117	{
118	struct sockaddr_in sa;
119	socklen_t len = sizeof(sa);	18✔
120
121	memset(&sa, 0, len);	18✔
122	sa.sin_family = AF_INET;	18✔
123	sa.sin_addr = *src_addr;	18✔
124	if (bind(s, (struct sockaddr*)&sa, len) < 0)	18✔
125	errno_crash_and_burn("cannot bind source address");	3✔
126
127	if (ident) {	16✔
128	memset(&sa, 0, len);	12✔
129	if (getsockname(s, (struct sockaddr *)&sa, &len) < 0)	12✔
UNCOV 130	errno_crash_and_burn("can't get ICMP socket identity");	×
131
132	if (sa.sin_port)	12✔
133	*ident = sa.sin_port;	12✔
134	}
135	}	16✔
136
137	unsigned short calcsum(unsigned short* buffer, int length)	918✔
138	{
139	unsigned long sum;
140
141	/* initialize sum to zero and loop until length (in words) is 0 */
142	for (sum = 0; length > 1; length -= 2) /* sizeof() returns number of bytes, we're interested in number of words */	31,314✔
143	sum += buffer++; / add 1 word of buffer to sum and proceed to the next */	30,396✔
144
145	/* we may have an extra byte */
146	if (length == 1)	918✔
UNCOV 147	sum += (char)*buffer;	×
148
149	sum = (sum >> 16) + (sum & 0xFFFF); /* add high 16 to low 16 */	918✔
150	sum += (sum >> 16); /* add carry */	918✔
151	return ~sum;	918✔
152	}
153
154	int socket_sendto_ping_ipv4(int s, struct sockaddr* saddr, socklen_t saddr_len, uint16_t icmp_seq_nr, uint16_t icmp_id_nr, uint8_t icmp_proto)	918✔
155	{
156	struct icmp* icp;
157	struct timespec tsorig;
158	long tsorig_ms;
159	int n;
160
161	icp = (struct icmp*)ping_buffer_ipv4;	918✔
162
163	icp->icmp_type = icmp_proto;	918✔
164	if(icmp_proto == ICMP_TSTAMP) {	918✔
165	clock_gettime(CLOCK_REALTIME, &tsorig);	18✔
166	tsorig_ms = (tsorig.tv_sec % (246060)) * 1000 + tsorig.tv_nsec / 1000000;	18✔
167	icp->icmp_otime = htonl(tsorig_ms);	18✔
168	icp->icmp_rtime = 0;	18✔
169	icp->icmp_ttime = 0;	18✔
170	}
171	icp->icmp_code = 0;	918✔
172	icp->icmp_cksum = 0;	918✔
173	icp->icmp_seq = htons(icmp_seq_nr);	918✔
174	icp->icmp_id = icmp_id_nr;	918✔
175
176	if (opt_random_data_on) {	918✔
177	for (n = ((char)&icp->icmp_data - (char)icp); n < ping_pkt_size_ipv4; ++n) {	513✔
178	ping_buffer_ipv4[n] = random() & 0xFF;	504✔
179	}	168✔
180	}	3✔
181
182	icp->icmp_cksum = calcsum((unsigned short*)icp, ping_pkt_size_ipv4);	918✔
183
184	if (outgoing_iface_idx_ipv4 > 0) {	918✔
185	struct iovec iov = {	2✔
186	.iov_base = icp,
187	.iov_len = ping_pkt_size_ipv4
188	};
189
190	char cmsg_buf[CMSG_SPACE(sizeof(struct in_pktinfo))];
191	memset(cmsg_buf, 0, sizeof(cmsg_buf));	2✔
192
193	struct msghdr msg = {	2✔
194	.msg_name = saddr,
195	.msg_namelen = saddr_len,
196	.msg_iov = &iov,
197	.msg_iovlen = 1,
198	.msg_control = cmsg_buf,
199	.msg_controllen = sizeof(cmsg_buf),
200	.msg_flags = 0
201	};
202
203	struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);	2✔
204	cmsg->cmsg_level = IPPROTO_IP;	2✔
205	cmsg->cmsg_type = IP_PKTINFO;	2✔
206	cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));	2✔
207
208	struct in_pktinfo pktinfo = (struct in_pktinfo )CMSG_DATA(cmsg);	2✔
209	memset(pktinfo, 0, sizeof(*pktinfo));	2✔
210	pktinfo->ipi_ifindex = outgoing_iface_idx_ipv4;	2✔
211
212	n = sendmsg(s, &msg, 0);	2✔
213	} else {
214	n = sendto(s, icp, ping_pkt_size_ipv4, 0, saddr, saddr_len);	916✔
215	}
216
217	return n;	918✔
218	}

schweikert / fping / 23399440985

Source File Press 'n' to go to next uncovered line, 'b' for previous

Source File
Press 'n' to go to next uncovered line, 'b' for previous