#ifndef SMALL
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ftp_var.h"
static int token(void);
static FILE *cfile;
#define DEFAULT 1
#define LOGIN 2
#define PASSWD 3
#define ACCOUNT 4
#define MACDEF 5
#define ID 10
#define MACH 11
static char tokval[100];
static struct toktab {
char *tokstr;
int tval;
} toktab[]= {
{ "default", DEFAULT },
{ "login", LOGIN },
{ "password", PASSWD },
{ "passwd", PASSWD },
{ "account", ACCOUNT },
{ "machine", MACH },
{ "macdef", MACDEF },
{ NULL, 0 }
};
int
ruserpass(const char *host, char **aname, char **apass, char **aacct)
{
char *hdir, buf[PATH_MAX], *tmp;
char myname[HOST_NAME_MAX+1], *mydomain;
int t, i, c, usedefault = 0;
struct stat stb;
hdir = getenv("HOME");
if (hdir == NULL || *hdir == '\0')
return (0);
i = snprintf(buf, sizeof(buf), "%s/.netrc", hdir);
if (i < 0 || i >= sizeof(buf)) {
warnc(ENAMETOOLONG, "%s/.netrc", hdir);
return (0);
}
cfile = fopen(buf, "r");
if (cfile == NULL) {
if (errno != ENOENT)
warn("%s", buf);
return (0);
}
if (gethostname(myname, sizeof(myname)) == -1)
myname[0] = '\0';
if ((mydomain = strchr(myname, '.')) == NULL)
mydomain = "";
next:
while ((t = token()) > 0) switch(t) {
case DEFAULT:
usedefault = 1;
case MACH:
if (!usedefault) {
if ((t = token()) == -1)
goto bad;
if (t != ID)
continue;
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,
(size_t)(tmp - hostname)) == 0 &&
tokval[tmp - hostname] == '\0')
goto match;
if ((tmp = strchr(host, '.')) != NULL &&
strcasecmp(tmp, mydomain) == 0 &&
strncasecmp(host, tokval,
(size_t)(tmp - host)) == 0 &&
tokval[tmp - host] == '\0')
goto match;
continue;
}
match:
while ((t = token()) > 0 &&
t != MACH && t != DEFAULT) switch(t) {
case LOGIN:
if ((t = token()) == -1)
goto bad;
if (t) {
if (*aname == 0) {
if ((*aname = strdup(tokval)) == NULL)
err(1, "strdup");
} else {
if (strcmp(*aname, tokval))
goto next;
}
}
break;
case PASSWD:
if ((*aname == NULL || strcmp(*aname, "anonymous")) &&
fstat(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 ((t = token()) == -1)
goto bad;
if (t && *apass == 0) {
if ((*apass = strdup(tokval)) == NULL)
err(1, "strdup");
}
break;
case ACCOUNT:
if (fstat(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 ((t = token()) == -1)
goto bad;
if (t && *aacct == 0) {
if ((*aacct = strdup(tokval)) == NULL)
err(1, "strdup");
}
break;
case MACDEF:
if (proxy) {
(void)fclose(cfile);
return (0);
}
while ((c = fgetc(cfile)) != EOF)
if (c != ' ' && c != '\t')
break;
if (c == EOF || c == '\n') {
fputs("Missing macdef name argument.\n", ttyout);
goto bad;
}
if (macnum == 16) {
fputs(
"Limit of 16 macros have already been defined.\n", ttyout);
goto bad;
}
tmp = macros[macnum].mac_name;
*tmp++ = c;
for (i=0; i < 8 && (c = fgetc(cfile)) != EOF &&
!isspace(c); ++i) {
*tmp++ = c;
}
if (c == EOF) {
fputs(
"Macro definition missing null line terminator.\n", ttyout);
goto bad;
}
*tmp = '\0';
if (c != '\n') {
while ((c = fgetc(cfile)) != EOF && c != '\n');
}
if (c == EOF) {
fputs(
"Macro definition missing null line terminator.\n", ttyout);
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 = fgetc(cfile)) == EOF) {
fputs(
"Macro definition missing null line terminator.\n", ttyout);
goto bad;
}
*tmp = c;
if (*tmp == '\n') {
if (tmp == macros[macnum].mac_start) {
macros[macnum++].mac_end = tmp;
break;
} else if (*(tmp-1) == '\0') {
macros[macnum++].mac_end =
tmp - 1;
break;
}
*tmp = '\0';
}
tmp++;
}
if (tmp == macbuf + 4096) {
fputs("4K macro buffer exceeded.\n", ttyout);
goto bad;
}
break;
default:
warnx("Unknown .netrc keyword %s", tokval);
break;
}
goto done;
}
done:
if (t == -1)
goto bad;
(void)fclose(cfile);
return (0);
bad:
(void)fclose(cfile);
return (-1);
}
static int
token(void)
{
char *cp;
int c;
struct toktab *t;
if (feof(cfile) || ferror(cfile))
return (0);
while ((c = fgetc(cfile)) != EOF &&
(c == '\n' || c == '\t' || c == ' ' || c == ','))
continue;
if (c == EOF)
return (0);
cp = tokval;
if (c == '"') {
while ((c = fgetc(cfile)) != EOF && c != '"') {
if (c == '\\' && (c = fgetc(cfile)) == EOF)
break;
*cp++ = c;
if (cp == tokval + sizeof(tokval)) {
warnx("Token in .netrc too long");
return (-1);
}
}
} else {
*cp++ = c;
while ((c = fgetc(cfile)) != EOF
&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
if (c == '\\' && (c = fgetc(cfile)) == EOF)
break;
*cp++ = c;
if (cp == tokval + sizeof(tokval)) {
warnx("Token in .netrc too long");
return (-1);
}
}
}
*cp = 0;
if (tokval[0] == 0)
return (0);
for (t = toktab; t->tokstr; t++)
if (!strcmp(t->tokstr, tokval))
return (t->tval);
return (ID);
}
#endif
