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comparison utils/tcpserv-dump.c @ 216:6aa2cd650943

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tcpserv-dump: specify bind IP on the command line
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 24 Jul 2023 22:19:08 -0800
parents 67289fac8a44
children 9f6a148ceb25
comparison
equal deleted inserted replaced
215:67289fac8a44 216:6aa2cd650943
18 #include <time.h> 18 #include <time.h>
19 #include <unistd.h> 19 #include <unistd.h>
20 20
21 #define MAXCONN 10 21 #define MAXCONN 10
22 22
23 static struct in_addr bind_ip;
23 static int tcp_port; 24 static int tcp_port;
24 static int listener, nconn, conns[MAXCONN], max_fd; 25 static int listener, nconn, conns[MAXCONN], max_fd;
25 static FILE *logf; 26 static FILE *logf;
26 static struct timeval curtime; 27 static struct timeval curtime;
27 static char fmt_time[32]; 28 static char fmt_time[32];
96 int max_fd, rc, i; 97 int max_fd, rc, i;
97 struct sockaddr_in sin; 98 struct sockaddr_in sin;
98 socklen_t addrlen; 99 socklen_t addrlen;
99 fd_set fds; 100 fd_set fds;
100 101
101 if (argc != 3) { 102 if (argc != 4) {
102 fprintf(stderr, "usage: %s port logfile\n", argv[0]); 103 fprintf(stderr, "usage: %s bind-ip port logfile\n", argv[0]);
103 exit(1); 104 exit(1);
104 } 105 }
105 tcp_port = atoi(argv[1]); 106 bind_ip.s_addr = inet_addr(argv[1]);
107 if (bind_ip.s_addr == INADDR_NONE) {
108 fprintf(stderr, "error: invalid IP address argument \"%s\"\n",
109 argv[1]);
110 exit(1);
111 }
112 tcp_port = atoi(argv[2]);
106 listener = socket(AF_INET, SOCK_STREAM, 0); 113 listener = socket(AF_INET, SOCK_STREAM, 0);
107 if (listener < 0) { 114 if (listener < 0) {
108 perror("socket"); 115 perror("socket");
109 exit(1); 116 exit(1);
110 } 117 }
111 sin.sin_family = AF_INET; 118 sin.sin_family = AF_INET;
112 sin.sin_addr.s_addr = INADDR_ANY; 119 sin.sin_addr = bind_ip;
113 sin.sin_port = htons(tcp_port); 120 sin.sin_port = htons(tcp_port);
114 rc = bind(listener, (struct sockaddr *) &sin, sizeof sin); 121 rc = bind(listener, (struct sockaddr *) &sin, sizeof sin);
115 if (rc < 0) { 122 if (rc < 0) {
116 perror("bind"); 123 perror("bind");
117 exit(1); 124 exit(1);
118 } 125 }
119 logf = fopen(argv[2], "a"); 126 logf = fopen(argv[3], "a");
120 if (!logf) { 127 if (!logf) {
121 perror(argv[2]); 128 perror(argv[3]);
122 exit(1); 129 exit(1);
123 } 130 }
124 rc = listen(listener, 5); 131 rc = listen(listener, 5);
125 if (rc < 0) { 132 if (rc < 0) {
126 perror("listen"); 133 perror("listen");