14822772522

Committed 04 May 2025 03:42PM UTC coverage: 86.609% (-1.3%) from 87.902%

Build # 14822772522

Build Type

Pull #391

github

Committed by

web-flow

Commit Message

Merge 0032fbfd9 into 913982a8c

Pull Request Pull Request #391: fix ICMPv6 error message handling and reporting

Run Details

7 of 41 new or added lines in 2 files covered. (17.07%)

4 existing lines in 1 file now uncovered.

1397 of 1613 relevant lines covered (86.61%)

325.19 hits per line

Source File
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87.5

/src/socket6.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 <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>

#include <netinet/icmp6.h>

char* ping_buffer_ipv6 = 0;
size_t ping_pkt_size_ipv6;

int open_ping_socket_ipv6(int *socktype)
{
    struct protoent* proto;
    int s;

    /* confirm that ICMP6 is available on this machine */
    if ((proto = getprotobyname("ipv6-icmp")) == NULL)
        crash_and_burn("ipv6-icmp: unknown protocol");

    /* create raw socket for ICMP6 calls (ping) */
    *socktype = SOCK_RAW;
    s = socket(AF_INET6, *socktype, proto->p_proto);
    if (s < 0) {
        /* try non-privileged icmp6 (works on Mac OSX without privileges, for example) */
        *socktype = SOCK_DGRAM;
        s = socket(AF_INET6, *socktype, proto->p_proto);
        if (s < 0) {
            return -1;
        }
    } else {
        /* receive only ICMP6 messages relevant for fping on raw socket */
        struct icmp6_filter recv_filter;

        ICMP6_FILTER_SETBLOCKALL(&recv_filter);
        ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &recv_filter);
        ICMP6_FILTER_SETPASS(ICMP6_DST_UNREACH, &recv_filter);
        ICMP6_FILTER_SETPASS(ICMP6_PACKET_TOO_BIG, &recv_filter);
        ICMP6_FILTER_SETPASS(ICMP6_TIME_EXCEEDED, &recv_filter);
        ICMP6_FILTER_SETPASS(ICMP6_PARAM_PROB, &recv_filter);

        if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &recv_filter, sizeof(recv_filter))) {
            errno_crash_and_burn("cannot set icmp6 message type filter");
        }
    }

    /* 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 init_ping_buffer_ipv6(size_t ping_data_size)
{
    /* allocate ping buffer */
    ping_pkt_size_ipv6 = ping_data_size + sizeof(struct icmp6_hdr);
    ping_buffer_ipv6 = (char*)calloc(1, ping_pkt_size_ipv6);
    if (!ping_buffer_ipv6)
        crash_and_burn("can't malloc ping packet");
}

void socket_set_src_addr_ipv6(int s, struct in6_addr* src_addr, int *ident)
{
    struct sockaddr_in6 sa;
    socklen_t len = sizeof(sa);

    memset(&sa, 0, sizeof(sa));
    sa.sin6_family = AF_INET6;
    sa.sin6_addr = *src_addr;
    if (bind(s, (struct sockaddr*)&sa, sizeof(sa)) < 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 ICMP6 socket identity");

        if (sa.sin6_port)
            *ident = sa.sin6_port;
    }
}

int socket_sendto_ping_ipv6(int s, struct sockaddr* saddr, socklen_t saddr_len, uint16_t icmp_seq_nr, uint16_t icmp_id_nr)
{
    struct icmp6_hdr* icp;
    int n;

    icp = (struct icmp6_hdr*)ping_buffer_ipv6;
    icp->icmp6_type = ICMP6_ECHO_REQUEST;
    icp->icmp6_code = 0;
    icp->icmp6_seq = htons(icmp_seq_nr);
    icp->icmp6_id = icmp_id_nr;

    if (random_data_flag) {
        for (n = sizeof(struct icmp6_hdr); n < ping_pkt_size_ipv6; ++n) {
            ping_buffer_ipv6[n] = random() & 0xFF;
        }
    }

    icp->icmp6_cksum = 0; /* The IPv6 stack calculates the checksum for us... */

    n = sendto(s, icp, ping_pkt_size_ipv6, 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
36	#include <fcntl.h>
37	#include <netdb.h>
38	#include <netinet/in.h>
39	#include <stdio.h>
40	#include <stdlib.h>
41	#include <string.h>
42	#include <sys/socket.h>
43
44	#include <netinet/icmp6.h>
45
46	char* ping_buffer_ipv6 = 0;
47	size_t ping_pkt_size_ipv6;
48
49	int open_ping_socket_ipv6(int *socktype)	611✔
50	{
51	struct protoent* proto;
52	int s;
53
54	/* confirm that ICMP6 is available on this machine */
55	if ((proto = getprotobyname("ipv6-icmp")) == NULL)	611✔
56	crash_and_burn("ipv6-icmp: unknown protocol");	×
57
58	/* create raw socket for ICMP6 calls (ping) */
59	*socktype = SOCK_RAW;	611✔
60	s = socket(AF_INET6, *socktype, proto->p_proto);	611✔
61	if (s < 0) {	611✔
62	/* try non-privileged icmp6 (works on Mac OSX without privileges, for example) */
63	*socktype = SOCK_DGRAM;	10✔
64	s = socket(AF_INET6, *socktype, proto->p_proto);	10✔
65	if (s < 0) {	10✔
66	return -1;	×
67	}
68	} else {
69	/* receive only ICMP6 messages relevant for fping on raw socket */
70	struct icmp6_filter recv_filter;
71
72	ICMP6_FILTER_SETBLOCKALL(&recv_filter);	601✔
73	ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &recv_filter);	601✔
74	ICMP6_FILTER_SETPASS(ICMP6_DST_UNREACH, &recv_filter);	601✔
75	ICMP6_FILTER_SETPASS(ICMP6_PACKET_TOO_BIG, &recv_filter);	601✔
76	ICMP6_FILTER_SETPASS(ICMP6_TIME_EXCEEDED, &recv_filter);	601✔
77	ICMP6_FILTER_SETPASS(ICMP6_PARAM_PROB, &recv_filter);	601✔
78
79	if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &recv_filter, sizeof(recv_filter))) {	601✔
NEW 80	errno_crash_and_burn("cannot set icmp6 message type filter");	×
81	}
82	}
83
84	/* Make sure that we use non-blocking IO */
85	{
86	int flags;
87
88	if ((flags = fcntl(s, F_GETFL, 0)) < 0)	611✔
89	perror("fcntl");	×
90
91	if (fcntl(s, F_SETFL, flags \| O_NONBLOCK) < 0)	611✔
92	perror("fcntl");	×
93	}
94
95	return s;	611✔
96	}	161✔
97
98	void init_ping_buffer_ipv6(size_t ping_data_size)	309✔
99	{
100	/* allocate ping buffer */
101	ping_pkt_size_ipv6 = ping_data_size + sizeof(struct icmp6_hdr);	309✔
102	ping_buffer_ipv6 = (char*)calloc(1, ping_pkt_size_ipv6);	309✔
103	if (!ping_buffer_ipv6)	309✔
104	crash_and_burn("can't malloc ping packet");	×
105	}	309✔
106
107	void socket_set_src_addr_ipv6(int s, struct in6_addr* src_addr, int *ident)	14✔
108	{
109	struct sockaddr_in6 sa;
110	socklen_t len = sizeof(sa);	14✔
111
112	memset(&sa, 0, sizeof(sa));	14✔
113	sa.sin6_family = AF_INET6;	14✔
114	sa.sin6_addr = *src_addr;	14✔
115	if (bind(s, (struct sockaddr*)&sa, sizeof(sa)) < 0)	14✔
116	errno_crash_and_burn("cannot bind source address");	2✔
117
118	if (ident) {	12✔
119	memset(&sa, 0, len);	10✔
120	if (getsockname(s, (struct sockaddr *)&sa, &len) < 0)	10✔
121	errno_crash_and_burn("can't get ICMP6 socket identity");	×
122
123	if (sa.sin6_port)	10✔
124	*ident = sa.sin6_port;	10✔
125	}
126	}	12✔
127
128	int socket_sendto_ping_ipv6(int s, struct sockaddr* saddr, socklen_t saddr_len, uint16_t icmp_seq_nr, uint16_t icmp_id_nr)	123✔
129	{
130	struct icmp6_hdr* icp;
131	int n;
132
133	icp = (struct icmp6_hdr*)ping_buffer_ipv6;	123✔
134	icp->icmp6_type = ICMP6_ECHO_REQUEST;	123✔
135	icp->icmp6_code = 0;	123✔
136	icp->icmp6_seq = htons(icmp_seq_nr);	123✔
137	icp->icmp6_id = icmp_id_nr;	123✔
138
139	if (random_data_flag) {	123✔
140	for (n = sizeof(struct icmp6_hdr); n < ping_pkt_size_ipv6; ++n) {	342✔
141	ping_buffer_ipv6[n] = random() & 0xFF;	336✔
142	}
143	}
144
145	icp->icmp6_cksum = 0; /* The IPv6 stack calculates the checksum for us... */	123✔
146
147	n = sendto(s, icp, ping_pkt_size_ipv6, 0, saddr, saddr_len);	123✔
148
149	return n;	123✔
150	}

schweikert / fping / 14822772522

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