11777176665

Committed 11 Nov 2024 10:58AM UTC coverage: 87.637% (-0.1%) from 87.762%

Build # 11777176665

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push

github

Committed by

gsnw-sebast

Commit Message

Update CHANGELOG.md for ICMP Timestamp

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89.23

/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 <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.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;

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 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 (random_data_flag) {
        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);

    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
36	#include <fcntl.h>
37	#include <netdb.h>
38	#include <netinet/in.h>
39	#include <netinet/in_systm.h>
40	#include <netinet/ip.h>
41	#include <netinet/ip_icmp.h>
42	#include <stdio.h>
43	#include <stdlib.h>
44	#include <string.h>
45	#include <sys/socket.h>
46	#include <time.h>
47
48	char* ping_buffer_ipv4 = 0;
49	size_t ping_pkt_size_ipv4;
50
51	int open_ping_socket_ipv4(int *socktype)	444✔
52	{
53	struct protoent* proto;
54	int s;
55
56	/* confirm that ICMP is available on this machine */
57	if ((proto = getprotobyname("icmp")) == NULL)	444✔
58	crash_and_burn("icmp: unknown protocol");	×
59
60	/* create raw socket for ICMP calls (ping) */
61	*socktype = SOCK_RAW;	444✔
62	s = socket(AF_INET, *socktype, proto->p_proto);	444✔
63	if (s < 0) {	444✔
64	/* try non-privileged icmp (works on Mac OSX without privileges, for example) */
65	*socktype = SOCK_DGRAM;	10✔
66	s = socket(AF_INET, *socktype, proto->p_proto);	10✔
67	if (s < 0) {	10✔
68	return -1;	×
69	}
70	}
71
72	/* Make sure that we use non-blocking IO */
73	{
74	int flags;
75
76	if ((flags = fcntl(s, F_GETFL, 0)) < 0)	444✔
77	perror("fcntl");	×
78
79	if (fcntl(s, F_SETFL, flags \| O_NONBLOCK) < 0)	444✔
80	perror("fcntl");	×
81	}
82
83	return s;	444✔
84	}	128✔
85
86	void init_ping_buffer_ipv4(size_t ping_data_size)	223✔
87	{
88	/* allocate ping buffer */
89	ping_pkt_size_ipv4 = ping_data_size + ICMP_MINLEN;	223✔
90	ping_buffer_ipv4 = (char*)calloc(1, ping_pkt_size_ipv4);	223✔
91	if (!ping_buffer_ipv4)	223✔
92	crash_and_burn("can't malloc ping packet");	×
93	}	223✔
94
95	void socket_set_src_addr_ipv4(int s, struct in_addr* src_addr, int *ident)	16✔
96	{
97	struct sockaddr_in sa;
98	socklen_t len = sizeof(sa);	16✔
99
100	memset(&sa, 0, len);	16✔
101	sa.sin_family = AF_INET;	16✔
102	sa.sin_addr = *src_addr;	16✔
103	if (bind(s, (struct sockaddr*)&sa, len) < 0)	16✔
104	errno_crash_and_burn("cannot bind source address");	3✔
105
106	if (ident) {	14✔
107	memset(&sa, 0, len);	10✔
108	if (getsockname(s, (struct sockaddr *)&sa, &len) < 0)	10✔
109	errno_crash_and_burn("can't get ICMP socket identity");	×
110
111	if (sa.sin_port)	10✔
112	*ident = sa.sin_port;	10✔
113	}
114	}	14✔
115
116	unsigned short calcsum(unsigned short* buffer, int length)	552✔
117	{
118	unsigned long sum;
119
120	/* initialize sum to zero and loop until length (in words) is 0 */
121	for (sum = 0; length > 1; length -= 2) /* sizeof() returns number of bytes, we're interested in number of words */	19,632✔
122	sum += buffer++; / add 1 word of buffer to sum and proceed to the next */	19,080✔
123
124	/* we may have an extra byte */
125	if (length == 1)	552✔
126	sum += (char)*buffer;	×
127
128	sum = (sum >> 16) + (sum & 0xFFFF); /* add high 16 to low 16 */	552✔
129	sum += (sum >> 16); /* add carry */	552✔
130	return ~sum;	552✔
131	}
132
133	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)	552✔
134	{
135	struct icmp* icp;
136	struct timespec tsorig;
137	long tsorig_ms;
138	int n;
139
140	icp = (struct icmp*)ping_buffer_ipv4;	552✔
141
142	icp->icmp_type = icmp_proto;	552✔
143	if(icmp_proto == ICMP_TSTAMP) {	552✔
144	clock_gettime(CLOCK_REALTIME, &tsorig);	6✔
145	tsorig_ms = (tsorig.tv_sec % (246060)) * 1000 + tsorig.tv_nsec / 1000000;	6✔
146	icp->icmp_otime = htonl(tsorig_ms);	6✔
147	icp->icmp_rtime = 0;	6✔
148	icp->icmp_ttime = 0;	6✔
149	}
150	icp->icmp_code = 0;	552✔
151	icp->icmp_cksum = 0;	552✔
152	icp->icmp_seq = htons(icmp_seq_nr);	552✔
153	icp->icmp_id = icmp_id_nr;	552✔
154
155	if (random_data_flag) {	552✔
156	for (n = ((char)&icp->icmp_data - (char)icp); n < ping_pkt_size_ipv4; ++n) {	513✔
157	ping_buffer_ipv4[n] = random() & 0xFF;	504✔
158	}	168✔
159	}	3✔
160
161	icp->icmp_cksum = calcsum((unsigned short*)icp, ping_pkt_size_ipv4);	552✔
162
163	n = sendto(s, icp, ping_pkt_size_ipv4, 0, saddr, saddr_len);	552✔
164
165	return n;	552✔
166	}

schweikert / fping / 11777176665

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