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Annotation of 43BSD/contrib/icon/rt/host.c, revision 1.1

1.1     ! root        1: #include "../h/rt.h"
        !             2: #include <stdio.h>
        !             3: 
        !             4: #ifdef UNAME
        !             5: #include <sys/utsname.h>
        !             6: #endif UNAME
        !             7: 
        !             8: /*
        !             9:  * iconhost - return some sort of host name into the buffer pointed at
        !            10:  *  by hostname.  This code accommodates several different host name
        !            11:  *  fetching schemes.
        !            12:  */
        !            13: iconhost(hostname)
        !            14: char *hostname;
        !            15:    {
        !            16: #ifdef WHOHOST
        !            17:    /*
        !            18:     * The host name is in /usr/include/whoami.h. (V7, 4.[01]bsd)
        !            19:     */
        !            20:    whohost(hostname);
        !            21: #endif WHOHOST
        !            22: 
        !            23: #ifdef UNAME
        !            24:    {
        !            25:    /*
        !            26:     * Use the uname system call.  (System III & V)
        !            27:     */
        !            28:    struct utsname uts;
        !            29:    uname(&uts);
        !            30:    strcpy(hostname,uts.nodename);
        !            31:    }
        !            32: #endif UNAME
        !            33: 
        !            34: #ifdef GETHOST
        !            35:    /*
        !            36:     * Use the gethostname system call.  (4.2bsd)
        !            37:     */
        !            38:    gethostname(hostname,MAXSTRING);
        !            39: #endif GETHOST
        !            40: 
        !            41: #ifdef HOSTSTR
        !            42:    /*
        !            43:     * The string constant HOSTSTR contains the host name.
        !            44:     */
        !            45:    strcpy(hostname,HOSTSTR);
        !            46: #endif HOSTSTR
        !            47:    }
        !            48: 
        !            49: #ifdef WHOHOST
        !            50: #define   HDRFILE "/usr/include/whoami.h"
        !            51: /*
        !            52:  * whohost - look for a line of the form
        !            53:  *  #define sysname "name"
        !            54:  * in HDRFILE and return the name.
        !            55:  */
        !            56: whohost(hostname)
        !            57: char *hostname;
        !            58:    {
        !            59:    char buf[BUFSIZ];
        !            60:    FILE *fd;
        !            61: 
        !            62:    fd = fopen(HDRFILE, "r");
        !            63:    if (fd == NULL) {
        !            64:       sprintf(buf, "Cannot open %s, no value for &host\n", HDRFILE);
        !            65:       syserr(buf);
        !            66:    }
        !            67:    setbuf(fd,NULL);
        !            68: 
        !            69:    for (;;) {   /* each line in the file */
        !            70:       if (fgets(buf, sizeof buf, fd) == NULL) {
        !            71:          sprintf(buf, "No #define for sysname in %s, no value for &host\n", HDRFILE);
        !            72:          syserr(buf);
        !            73:       }
        !            74:       if (sscanf(buf,"#define sysname \"%[^\"]\"", hostname) == 1) {
        !            75:          fclose(fd);
        !            76:          return;
        !            77:       }
        !            78:    }
        !            79:    }
        !            80: #endif WHOHOST

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