| 1 | /*--------------------------------*-C-*---------------------------------* |
1 | /*--------------------------------*-C-*---------------------------------* |
| 2 | * File: netdisp.c |
2 | * File: netdisp.C |
| 3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
| 4 | * |
4 | * |
| 5 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
| 6 | * Copyright (c) 1996 Chuck Blake <cblake@BBN.COM> |
6 | * Copyright (c) 1996 Chuck Blake <cblake@BBN.COM> |
| 7 | * - original version |
7 | * - original version |
| … | |
… | |
| 38 | #include "netdisp.h" |
38 | #include "netdisp.h" |
| 39 | |
39 | |
| 40 | /*----------------------------------------------------------------------*/ |
40 | /*----------------------------------------------------------------------*/ |
| 41 | /* return NULL a pointer to buffer which may be freed */ |
41 | /* return NULL a pointer to buffer which may be freed */ |
| 42 | char * |
42 | char * |
| 43 | rxvt_network_display(const char *display) |
43 | rxvt_network_display (const char *display) |
| 44 | { |
44 | { |
| 45 | char buffer[1024], *rval = NULL; |
45 | char buffer[1024], *rval = NULL; |
| 46 | struct ifconf ifc; |
46 | struct ifconf ifc; |
| 47 | struct ifreq *ifr; |
47 | struct ifreq *ifr; |
| 48 | int i, skfd; |
48 | int i, skfd; |
| 49 | |
49 | |
| 50 | if (display[0] != ':' && STRNCMP(display, "unix:", 5)) |
50 | if (display[0] != ':' && STRNCMP (display, "unix:", 5)) |
| 51 | return (char *) display; /* nothing to do */ |
51 | return (char *) display; /* nothing to do */ |
| 52 | |
52 | |
| 53 | ifc.ifc_len = sizeof(buffer); /* Get names of all ifaces */ |
53 | ifc.ifc_len = sizeof (buffer); /* Get names of all ifaces */ |
| 54 | ifc.ifc_buf = buffer; |
54 | ifc.ifc_buf = buffer; |
| 55 | |
55 | |
| 56 | if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
56 | if ((skfd = socket (AF_INET, SOCK_DGRAM, 0)) < 0) |
| 57 | { |
57 | { |
| 58 | perror("socket"); |
58 | perror ("socket"); |
| 59 | return NULL; |
59 | return NULL; |
| 60 | } |
60 | } |
| 61 | if (ioctl(skfd, SIOCGIFCONF, &ifc) < 0) |
61 | if (ioctl (skfd, SIOCGIFCONF, &ifc) < 0) |
| 62 | { |
62 | { |
| 63 | perror("SIOCGIFCONF"); |
63 | perror ("SIOCGIFCONF"); |
| 64 | close(skfd); |
64 | close (skfd); |
| 65 | return NULL; |
65 | return NULL; |
| 66 | } |
66 | } |
| 67 | for (i = 0, ifr = ifc.ifc_req; |
67 | for (i = 0, ifr = ifc.ifc_req; |
| 68 | i < (ifc.ifc_len / sizeof(struct ifreq)); |
68 | i < (ifc.ifc_len / sizeof (struct ifreq)); |
| 69 | i++, ifr++) |
69 | i++, ifr++) |
| 70 | { |
70 | { |
| 71 | struct ifreq ifr2; |
71 | struct ifreq ifr2; |
| 72 | |
72 | |
| 73 | STRCPY(ifr2.ifr_name, ifr->ifr_name); |
73 | STRCPY (ifr2.ifr_name, ifr->ifr_name); |
| 74 | if (ioctl(skfd, SIOCGIFADDR, &ifr2) >= 0) |
74 | if (ioctl (skfd, SIOCGIFADDR, &ifr2) >= 0) |
| 75 | { |
75 | { |
| 76 | unsigned long addr; |
76 | unsigned long addr; |
| 77 | struct sockaddr_in *p_addr; |
77 | struct sockaddr_in *p_addr; |
| 78 | |
78 | |
| 79 | p_addr = (struct sockaddr_in *)&(ifr2.ifr_addr); |
79 | p_addr = (struct sockaddr_in *)& (ifr2.ifr_addr); |
| 80 | addr = htonl((unsigned long)p_addr->sin_addr.s_addr); |
80 | addr = htonl ((unsigned long)p_addr->sin_addr.s_addr); |
| 81 | |
81 | |
| 82 | /* |
82 | /* |
| 83 | * not "0.0.0.0" or "127.0.0.1" - so format the address |
83 | * not "0.0.0.0" or "127.0.0.1" - so format the address |
| 84 | */ |
84 | */ |
| 85 | if (addr && addr != 0x7F000001) |
85 | if (addr && addr != 0x7F000001) |
| 86 | { |
86 | { |
| 87 | char *colon = STRCHR(display, ':'); |
87 | char *colon = STRCHR (display, ':'); |
| 88 | |
88 | |
| 89 | if (colon == NULL) |
89 | if (colon == NULL) |
| 90 | colon = ":0.0"; |
90 | colon = ":0.0"; |
| 91 | |
91 | |
| 92 | rval = rxvt_malloc(STRLEN(colon) + 16); |
92 | rval = rxvt_malloc (STRLEN (colon) + 16); |
| 93 | sprintf(rval, "%d.%d.%d.%d%s", |
93 | sprintf (rval, "%d.%d.%d.%d%s", |
| 94 | (int)((addr >> 030) & 0xFF), |
94 | (int) ((addr >> 030) & 0xFF), |
| 95 | (int)((addr >> 020) & 0xFF), |
95 | (int) ((addr >> 020) & 0xFF), |
| 96 | (int)((addr >> 010) & 0xFF), |
96 | (int) ((addr >> 010) & 0xFF), |
| 97 | (int)(addr & 0xFF), colon); |
97 | (int) (addr & 0xFF), colon); |
| 98 | break; |
98 | break; |
| 99 | } |
99 | } |
| 100 | } |
100 | } |
| 101 | } |
101 | } |
| 102 | |
102 | |
| 103 | close(skfd); |
103 | close (skfd); |
| 104 | return rval; |
104 | return rval; |
| 105 | } |
105 | } |
| 106 | #endif /* DISPLAY_IS_IP */ |
106 | #endif /* DISPLAY_IS_IP */ |
| 107 | /*----------------------- end-of-file (C source) -----------------------*/ |
107 | /*----------------------- end-of-file (C source) -----------------------*/ |
