ruserpass.c File Reference

#include "precomp.h"

Include dependency graph for ruserpass.c:

Go to the source code of this file.

Classes
struct	toktab

Macros
#define	MAXHOSTNAMELEN   64
#define	DEFAULT   1
#define	LOGIN   2
#define	PASSWD   3
#define	ACCOUNT   4
#define	MACDEF   5
#define	ID   10
#define	MACH   11

Functions
struct utmp *	getutmp ()
static int	token (void)
int	ruserpass (const char *host, char **aname, char **apass, char **aacct)

Variables
static char	sccsid [] = "@(#)ruserpass.c 5.1 (Berkeley) 3/1/89"
static FILE *	cfile
static char	tokval [100]
static struct toktab	toktab []
char *	hostname

Macro Definition Documentation

ACCOUNT

#define ACCOUNT   4

Definition at line 34 of file ruserpass.c.

DEFAULT

#define DEFAULT   1

Definition at line 31 of file ruserpass.c.

ID

#define ID   10

Definition at line 36 of file ruserpass.c.

LOGIN

#define LOGIN   2

Definition at line 32 of file ruserpass.c.

MACDEF

#define MACDEF   5

Definition at line 35 of file ruserpass.c.

MACH

#define MACH   11

Definition at line 37 of file ruserpass.c.

MAXHOSTNAMELEN

#define MAXHOSTNAMELEN   64

Definition at line 28 of file ruserpass.c.

PASSWD

#define PASSWD   3

Definition at line 33 of file ruserpass.c.

Function Documentation

getutmp()

struct utmp * getutmp

(

)

ruserpass()

int ruserpass	(	const char *	host,
		char **	aname,
		char **	apass,
		char **	aacct
	)

Definition at line 58 of file ruserpass.c.

{
    const char *hdir, *mydomain;
    char buf[BUFSIZ], *tmp;
    char myname[MAXHOSTNAMELEN];
    int t, i, c, usedefault = 0;
    struct stat stb;
 
    hdir = getenv("HOME");
    if (hdir == NULL)
        hdir = ".";
    (void) sprintf(buf, "%s/.netrc", hdir);
    cfile = fopen(buf, "r");
    if (cfile == NULL) {
        if (errno != ENOENT)
            perror(buf);
        return(0);
    }
 
 
          if (gethostname(myname, sizeof(myname)) < 0)
        myname[0] = '\0';
    if ((mydomain = index(myname, '.')) == NULL)
        mydomain = "";
next:
    while ((t = token())) switch(t) {
 
    case DEFAULT:
        usedefault = 1;
        /* FALL THROUGH */
 
    case MACH:
        if (!usedefault) {
            if (token() != ID)
                continue;
            /*
             * Allow match either for user's input host name
             * or official hostname.  Also allow match of
             * incompletely-specified host in local domain.
             */
            if (strcasecmp(host, tokval) == 0)
                goto match;
            if (strcasecmp(hostname, tokval) == 0)
                goto match;
            if ((tmp = index(hostname, '.')) != NULL &&
                 strcasecmp(tmp, mydomain) == 0 &&
                 strncasecmp(hostname, tokval, tmp - hostname) == 0 &&
                 tokval[tmp - hostname] == '\0')
                goto match;
            if ((tmp = index(host, '.')) != NULL &&
                 strcasecmp(tmp, mydomain) == 0 &&
                 strncasecmp(host, tokval, tmp - host) == 0 &&
                 tokval[tmp - host] == '\0')
                goto match;
            continue;
        }
    match:
        while ((t = token()) && t != MACH && t != DEFAULT) switch(t) {
 
        case LOGIN:
            if (token()) {
                if (*aname == 0) {
                    *aname = malloc((unsigned) strlen(tokval) + 1);
                    (void) strcpy(*aname, tokval);
                } else {
                    if (strcmp(*aname, tokval))
                        goto next;
                }
            }
            break;
        case PASSWD:
            if (strcmp(*aname, "anonymous") &&
                fstat(fileno(cfile), &stb) >= 0 &&
                (stb.st_mode & 077) != 0) {
    fprintf(stderr, "Error - .netrc file not correct mode.\n");
    fprintf(stderr, "Remove password or correct mode.\n");
                goto bad;
            }
            if (token() && *apass == 0) {
                *apass = malloc((unsigned) strlen(tokval) + 1);
                (void) strcpy(*apass, tokval);
            }
            break;
        case ACCOUNT:
            if (fstat(fileno(cfile), &stb) >= 0
                && (stb.st_mode & 077) != 0) {
    fprintf(stderr, "Error - .netrc file not correct mode.\n");
    fprintf(stderr, "Remove account or correct mode.\n");
                goto bad;
            }
            if (token() && *aacct == 0) {
                *aacct = malloc((unsigned) strlen(tokval) + 1);
                (void) strcpy(*aacct, tokval);
            }
            break;
        case MACDEF:
            if (proxy) {
                (void) fclose(cfile);
                return(0);
            }
            while ((c=getc(cfile)) != EOF && (c == ' ' || c == '\t'));
            if (c == EOF || c == '\n') {
                printf("Missing macdef name argument.\n");
                goto bad;
            }
            if (macnum == 16) {
                printf("Limit of 16 macros have already been defined\n");
                goto bad;
            }
            tmp = macros[macnum].mac_name;
            *tmp++ = c;
            for (i=0; i < 8 && (c=getc(cfile)) != EOF &&
                !isspace(c); ++i) {
                *tmp++ = c;
            }
            if (c == EOF) {
                printf("Macro definition missing null line terminator.\n");
                goto bad;
            }
            *tmp = '\0';
            if (c != '\n') {
                while ((c=getc(cfile)) != EOF && c != '\n');
            }
            if (c == EOF) {
                printf("Macro definition missing null line terminator.\n");
                goto bad;
            }
            if (macnum == 0) {
                macros[macnum].mac_start = macbuf;
            }
            else {
                macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
            }
            tmp = macros[macnum].mac_start;
            while (tmp != macbuf + 4096) {
                if ((c=getc(cfile)) == EOF) {
                printf("Macro definition missing null line terminator.\n");
                    goto bad;
                }
                *tmp = c;
                if (*tmp == '\n') {
                    if (*(tmp-1) == '\0') {
                       macros[macnum++].mac_end = tmp - 1;
                       break;
                    }
                    *tmp = '\0';
                }
                tmp++;
            }
            if (tmp == macbuf + 4096) {
                printf("4K macro buffer exceeded\n");
                goto bad;
            }
            break;
        default:
    fprintf(stderr, "Unknown .netrc keyword %s\n", tokval);
            break;
        }
        goto done;
    }
done:
    (void) fclose(cfile);
    return(0);
bad:
    (void) fclose(cfile);
    return(-1);
}

Referenced by login().

token()

static int token ( void  )

static

Definition at line 226 of file ruserpass.c.

{
   char *cp;
   int c;
   struct toktab *t;
 
   if (feof(cfile))
      return (0);
   while ((c = getc(cfile)) != EOF &&
          (c == '\r' || c == '\n' || c == '\t' || c == ' ' || c == ','))
      continue;
   if (c == EOF)
      return (0);
   cp = tokval;
   if (c == '"') {
      while ((c = getc(cfile)) != EOF && c != '"') {
         if (c == '\\')
            c = getc(cfile);
         *cp++ = c;
      }
   } else {
      *cp++ = c;
      while ((c = getc(cfile)) != EOF
             && c != '\n' && c != '\t' && c != ' ' && c != ',' && c != '\r') {
         if (c == '\\')
            c = getc(cfile);
         *cp++ = c;
      }
   }
   *cp = 0;
   if (tokval[0] == 0)
      return (0);
   for (t = toktab; t->tokstr; t++)
      if (!strcmp(t->tokstr, tokval))
         return (t->tval);
   return (ID);
}

Referenced by ruserpass().

Variable Documentation

cfile

FILE* cfile

static

Definition at line 25 of file ruserpass.c.

Referenced by ruserpass(), test_LZRead(), and token().

hostname

char* hostname

extern

Definition at line 88 of file ftp.c.

Referenced by getreply(), hookup(), pswitch(), and ruserpass().

sccsid

char sccsid[] = "@(#)ruserpass.c 5.1 (Berkeley) 3/1/89"

static

Definition at line 21 of file ruserpass.c.

toktab

struct toktab toktab[]

static

Initial value:

= {
    {"default", DEFAULT},
    {"login",   LOGIN},
    {"password",    PASSWD},
    {"passwd",  PASSWD},
    {"account", ACCOUNT},
    {"machine", MACH},
    {"macdef",  MACDEF},
    {0,     0}
}

tokval

char tokval[100]

static

Definition at line 39 of file ruserpass.c.

Referenced by ruserpass(), and token().