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- #if defined(LIBC_SCCS) && !defined(lint)
- static char rcsid[] = "$Id: nsap_addr.c,v 1.1 1994/07/28 21:53:01 roland Exp $";
- #endif /* LIBC_SCCS and not lint */
-
- #include <sys/param.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include <arpa/nameser.h>
- #include <ctype.h>
- #include <resolv.h>
-
- #include "../conf/portability.h"
-
- #if !defined(isxdigit) /* XXX - could be a function */
- static int
- isxdigit(c)
- register int c;
- {
- return ((c >= '0') && (c <= '9')) || ((c >= 'A') && (c <= 'F'));
- }
- #endif
-
- static char
- xtob(c)
- register int c;
- {
- return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
- }
-
- u_int
- inet_nsap_addr(ascii, binary, maxlen)
- const char *ascii;
- u_char *binary;
- int maxlen;
- {
- register u_char c, nib;
- u_char *start = binary;
- u_int len = 0;
-
- while ((c = *ascii++) != '\0' && len < maxlen) {
- if (c == '.' || c == '+' || c == '/')
- continue;
- if (!isascii(c))
- return (0);
- if (islower(c))
- c = toupper(c);
- if (isxdigit(c)) {
- nib = xtob(c);
- if (c = *ascii++) {
- c = toupper(c);
- if (isxdigit(c)) {
- *binary++ = (nib << 4) | xtob(c);
- len++;
- } else
- return (0);
- }
- else
- return (0);
- }
- else
- return (0);
- }
- return (len);
- }
-
- char *
- inet_nsap_ntoa(binlen, binary, ascii)
- int binlen;
- register const u_char *binary;
- register char *ascii;
- {
- register int nib;
- int i;
- static char tmpbuf[255*3];
- char *start;
-
- if (ascii)
- start = ascii;
- else {
- ascii = tmpbuf;
- start = tmpbuf;
- }
-
- if (binlen > 255)
- binlen = 255;
-
- for (i = 0; i < binlen; i++) {
- nib = *binary >> 4;
- *ascii++ = nib + (nib < 10 ? '0' : '7');
- nib = *binary++ & 0x0f;
- *ascii++ = nib + (nib < 10 ? '0' : '7');
- if (((i % 2) == 0 && (i + 1) < binlen))
- *ascii++ = '.';
- }
- *ascii = '\0';
- return (start);
- }
-