Date: Tue, 5 Sep 1995 19:11:58 PDT From: Bill Fenner <fenner@parc.xerox.com> To: bugs@freebsd.org Cc: Bill Fenner <fenner@parc.xerox.com> Subject: Re: NIS passwd file doesn't work on 2.1.0-950726-SNAP? Message-ID: <95Sep5.191208pdt.177475@crevenia.parc.xerox.com> In-Reply-To: Your message of "Tue, 05 Sep 95 17:40:38 PDT." <95Sep5.174045pdt.177475@crevenia.parc.xerox.com>
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Urgh, after looking over my changes, it looks like it could be much
simpler, without doing any truncation. I also removed the static
resultbuf[] and the copies; seemed like a waste.
These are from the original, not from the first diffs I sent.
Bill
--- getpwent.c.orig Tue Sep 5 17:04:47 1995
+++ getpwent.c Tue Sep 5 18:30:56 1995
@@ -586,13 +586,11 @@
_getyppass(struct passwd *pw, const char *name, const char *map)
{
char *result, *s;
- static char resultbuf[1024];
int resultlen;
char mastermap[1024];
int gotmaster = 0;
struct _pw_cache *m, *p;
struct _namelist *n;
- char user[UT_NAMESIZE];
if(!_pw_yp_domain) {
if(yp_get_default_domain(&_pw_yp_domain))
@@ -613,18 +611,23 @@
return 0;
s = strchr(result, '\n');
- if(s) *s = '\0';
+ if (s) *s = '\0';
- if(resultlen >= sizeof resultbuf) return 0;
- strcpy(resultbuf, result);
- sprintf (user, "%.*s", (strchr(result, ':') - result), result);
+ s = strchr(result, ':');
+ if (s) {
+ *s = '\0';
+ } else {
+ /* malformed, no colon */
+ free(result);
+ return 0;
+ }
_pw_passwd.pw_fields = -1; /* Impossible value */
if (_minuscnt && _minushead) {
m = _minushead;
while (m) {
n = m->namelist;
while (n) {
- if (!strcmp(n->name,user) || *n->name == '\0') {
+ if (!strcmp(n->name,result) || *n->name == '\0') {
free(result);
return (0);
}
@@ -638,7 +641,7 @@
while (p) {
n = p->namelist;
while (n) {
- if (!strcmp(n->name, user) || *n->name == '\0')
+ if (!strcmp(n->name, result) || *n->name == '\0')
bcopy((char *)&p->pw_entry,
(char *)&_pw_passwd, sizeof(p->pw_entry));
n = n->next;
@@ -646,12 +649,14 @@
p = p->next;
}
}
- free(result);
/* No hits in the plus or minus lists: Bzzt! reject. */
- if (_pw_passwd.pw_fields == -1)
+ if (_pw_passwd.pw_fields == -1) {
+ free(result);
return(0);
- result = resultbuf;
- _pw_breakout_yp(pw, resultbuf, gotmaster);
+ }
+ *s = ':'; /* Put colon back */
+ _pw_breakout_yp(pw, result, gotmaster);
+ free(result);
return 1;
}
@@ -662,14 +667,13 @@
static char *key;
static int keylen;
char *lastkey, *result;
- static char resultbuf[1024];
int resultlen;
int rv;
char *map = "passwd.byname";
int gotmaster = 0;
struct _pw_cache *m, *p;
struct _namelist *n;
- char user[UT_NAMESIZE];
+ char *s;
if(!_pw_yp_domain) {
if(yp_get_default_domain(&_pw_yp_domain))
@@ -704,20 +708,21 @@
return 0;
}
- if(resultlen > sizeof(resultbuf)) {
+ s = strchr(result, ':');
+ if (s) {
+ *s = '\0';
+ } else {
+ /* malformed, no colon */
free(result);
goto tryagain;
}
-
- strcpy(resultbuf, result);
- sprintf(user, "%.*s", (strchr(result, ':') - result), result);
_pw_passwd.pw_fields = -1; /* Impossible value */
if (_minuscnt && _minushead) {
m = _minushead;
while (m) {
n = m->namelist;
while (n) {
- if (!strcmp(n->name, user) || *n->name == '\0') {
+ if (!strcmp(n->name, result) || *n->name == '\0') {
free(result);
goto tryagain;
}
@@ -731,7 +736,7 @@
while (p) {
n = p->namelist;
while (n) {
- if (!strcmp(n->name, user) || *n->name == '\0')
+ if (!strcmp(n->name, result) || *n->name == '\0')
bcopy((char *)&p->pw_entry,
(char*)&_pw_passwd, sizeof(p->pw_entry));
n = n->next;
@@ -739,12 +744,15 @@
p = p->next;
}
}
- free(result);
/* No plus or minus hits: Bzzzt! reject. */
- if (_pw_passwd.pw_fields == -1)
+ if (_pw_passwd.pw_fields == -1) {
+ free(result);
goto tryagain;
- if(result = strchr(resultbuf, '\n')) *result = '\0';
- _pw_breakout_yp(pw, resultbuf, gotmaster);
+ }
+ *s = ':'; /* Put colon back */
+ if(s = strchr(result, '\n')) *s = '\0';
+ _pw_breakout_yp(pw, result, gotmaster);
+ free(result);
}
return 1;
}
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