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glibc  2.9
Classes | Defines | Functions | Variables
ruserpass.c File Reference
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libintl.h>

Go to the source code of this file.

Classes

struct  toktab

Defines

#define DEFAULT   1
#define LOGIN   2
#define PASSWD   3
#define ACCOUNT   4
#define MACDEF   5
#define ID   10
#define MACHINE   11
#define TOK_DEFAULT_IDX   0
#define TOK_LOGIN_IDX   (TOK_DEFAULT_IDX + sizeof "default")
#define TOK_PASSWORD_IDX   (TOK_LOGIN_IDX + sizeof "login")
#define TOK_PASSWD_IDX   (TOK_PASSWORD_IDX + sizeof "password")
#define TOK_ACCOUNT_IDX   (TOK_PASSWD_IDX + sizeof "passwd")
#define TOK_MACHINE_IDX   (TOK_ACCOUNT_IDX + sizeof "account")
#define TOK_MACDEF_IDX   (TOK_MACHINE_IDX + sizeof "machine")

Functions

static int token (void)
int ruserpass (char *host, char **aname, char **apass) const
 libc_hidden_def (ruserpass)

Variables

static FILEcfile
static char tokval [100]
static const char tokstr []
static struct toktab toktab []

Class Documentation

struct toktab

Definition at line 81 of file ruserpass.c.

Class Members
int tokstr_off
int tval

Define Documentation

#define ACCOUNT   4

Definition at line 56 of file ruserpass.c.

#define DEFAULT   1

Definition at line 53 of file ruserpass.c.

#define ID   10

Definition at line 58 of file ruserpass.c.

#define LOGIN   2

Definition at line 54 of file ruserpass.c.

#define MACDEF   5

Definition at line 57 of file ruserpass.c.

#define MACHINE   11

Definition at line 59 of file ruserpass.c.

#define PASSWD   3

Definition at line 55 of file ruserpass.c.

#define TOK_ACCOUNT_IDX   (TOK_PASSWD_IDX + sizeof "passwd")
#define TOK_DEFAULT_IDX   0
#define TOK_LOGIN_IDX   (TOK_DEFAULT_IDX + sizeof "default")
#define TOK_MACDEF_IDX   (TOK_MACHINE_IDX + sizeof "machine")
#define TOK_MACHINE_IDX   (TOK_ACCOUNT_IDX + sizeof "account")
#define TOK_PASSWD_IDX   (TOK_PASSWORD_IDX + sizeof "password")
#define TOK_PASSWORD_IDX   (TOK_LOGIN_IDX + sizeof "login")

Function Documentation

Definition at line 289 of file ruserpass.c.

{
       char *cp;
       int c;
       int i;

       if (feof_unlocked(cfile) || ferror_unlocked(cfile))
              return (0);
       while ((c = getc_unlocked(cfile)) != EOF &&
           (c == '\n' || c == '\t' || c == ' ' || c == ','))
              continue;
       if (c == EOF)
              return (0);
       cp = tokval;
       if (c == '"') {
              while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
                     if (c == '\\')
                            c = getc_unlocked(cfile);
                     *cp++ = c;
              }
       } else {
              *cp++ = c;
              while ((c = getc_unlocked(cfile)) != EOF
                  && c != '\n' && c != '\t' && c != ' ' && c != ',') {
                     if (c == '\\')
                            c = getc_unlocked(cfile);
                     *cp++ = c;
              }
       }
       *cp = 0;
       if (tokval[0] == 0)
              return (0);
       for (i = 0; i < (int) (sizeof (toktab) / sizeof (toktab[0])); ++i)
              if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
                     return toktab[i].tval;
       return (ID);
}

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

Definition at line 97 of file ruserpass.c.

{
       char *hdir, *buf, *tmp;
       char myname[1024], *mydomain;
       int t, usedefault = 0;
       struct stat64 stb;

       hdir = __secure_getenv("HOME");
       if (hdir == NULL) {
              /* If we can't get HOME, fail instead of trying ".",
                 which is no improvement. This really should call
                 getpwuid(getuid()).  */
              /*hdir = ".";*/
              return -1;
       }

       buf = alloca (strlen (hdir) + 8);

       __stpcpy (__stpcpy (buf, hdir), "/.netrc");
       cfile = fopen(buf, "rc");
       if (cfile == NULL) {
              if (errno != ENOENT)
                     warn("%s", buf);
              return (0);
       }
       /* No threads use this stream.  */
       __fsetlocking (cfile, FSETLOCKING_BYCALLER);
       if (__gethostname(myname, sizeof(myname)) < 0)
              myname[0] = '\0';
       mydomain = __strchrnul(myname, '.');
next:
       while ((t = token())) switch(t) {

       case DEFAULT:
              usedefault = 1;
              /* FALL THROUGH */

       case MACHINE:
              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 = strchr(hostname, '.')) != NULL &&
                         __strcasecmp(tmp, mydomain) == 0 &&
                         __strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
                         tokval[tmp - hostname] == '\0')
                            goto match; */
                     if ((tmp = strchr(host, '.')) != NULL &&
                         __strcasecmp(tmp, mydomain) == 0 &&
                         __strncasecmp(host, tokval, tmp - host) == 0 &&
                         tokval[tmp - host] == '\0')
                            goto match;
                     continue;
              }
       match:
              while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {

              case LOGIN:
                     if (token()) {
                            if (*aname == 0) {
                              char *newp;
                              newp = malloc((unsigned) strlen(tokval) + 1);
                              if (newp == NULL)
                                {
                                  warnx(_("out of memory"));
                                  goto bad;
                                }
                              *aname = strcpy(newp, tokval);
                            } else {
                                   if (strcmp(*aname, tokval))
                                          goto next;
                            }
                     }
                     break;
              case PASSWD:
                     if (strcmp(*aname, "anonymous") &&
                         fstat64(fileno(cfile), &stb) >= 0 &&
                         (stb.st_mode & 077) != 0) {
       warnx(_("Error: .netrc file is readable by others."));
       warnx(_("Remove password or make file unreadable by others."));
                            goto bad;
                     }
                     if (token() && *apass == 0) {
                            char *newp;
                            newp = malloc((unsigned) strlen(tokval) + 1);
                            if (newp == NULL)
                              {
                                warnx(_("out of memory"));
                                goto bad;
                              }
                            *apass = strcpy(newp, tokval);
                     }
                     break;
              case ACCOUNT:
#if 0
                     if (fstat64(fileno(cfile), &stb) >= 0
                         && (stb.st_mode & 077) != 0) {
       warnx("Error: .netrc file is readable by others.");
       warnx("Remove account or make file unreadable by others.");
                            goto bad;
                     }
                     if (token() && *aacct == 0) {
                            *aacct = malloc((unsigned) strlen(tokval) + 1);
                            (void) strcpy(*aacct, tokval);
                     }
#endif
                     break;
              case MACDEF:
#if 0
                     if (proxy) {
                            (void) fclose(cfile);
                            return (0);
                     }
                     while ((c=getc_unlocked(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_unlocked(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_unlocked(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_unlocked(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;
                     }
#endif
                     break;
              default:
                     warnx(_("Unknown .netrc keyword %s"), tokval);
                     break;
              }
              goto done;
       }
done:
       (void) fclose(cfile);
       return (0);
bad:
       (void) fclose(cfile);
       return (-1);
}

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static int token ( void  ) [static]

Variable Documentation

FILE* cfile [static]

Definition at line 51 of file ruserpass.c.

const char tokstr[] [static]
Initial value:
{
#define TOK_DEFAULT_IDX
  "default\0"
#define TOK_LOGIN_IDX
  "login\0"
#define TOK_PASSWORD_IDX
  "password\0"
#define TOK_PASSWD_IDX
  "passwd\0"
#define TOK_ACCOUNT_IDX
  "account\0"
#define TOK_MACHINE_IDX
  "machine\0"
#define TOK_MACDEF_IDX
  "macdef"
}

Definition at line 63 of file ruserpass.c.

struct toktab toktab[] [static]
char tokval[100] [static]

Definition at line 61 of file ruserpass.c.