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The previous commit appeared to just shove the bug under the carpet rather

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than really solve it.  This approach (inspired by Ruslan's patch) solves
the real problem by stripping the local domain off the host name in the
config line structure.

Also mark a bunch of code sections that either do not check the return value
of a strdup(), malloc() or calloc() call, or do not properly handle a NULL
return.
This commit is contained in:
Dag-Erling Smørgrav 2001-09-13 06:48:41 +00:00
parent cda2a9b2f0
commit db87d61acf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=83392
1 changed files with 23 additions and 5 deletions
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28
usr.sbin/syslogd/syslogd.c
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@ -984,6 +984,7 @@ fprintlog(f, flags, msg)
v++;
if (msg) {
/* XXX should check for NULL return */
wmsg = strdup(msg); /* XXX iov_base needs a `const' sibling. */
v->iov_base = wmsg;
v->iov_len = strlen(msg);
@ -1245,6 +1246,7 @@ cvthname(f)
dprintf("Host name for your address (%s) unknown\n", ip);
return (ip);
}
/* XXX Not quite correct, but close enough for government work. */
if ((p = strchr(hname, '.')) && strcasecmp(p + 1, LocalDomain) == 0)
*p = '\0';
return (hname);
@ -1384,8 +1386,10 @@ init(signo)
/* open the configuration file */
if ((cf = fopen(ConfFile, "r")) == NULL) {
dprintf("cannot open %s\n", ConfFile);
/* XXX should check for NULL return */
*nextp = (struct filed *)calloc(1, sizeof(*f));
cfline("*.ERR\t/dev/console", *nextp, "*", "*");
/* XXX should check for NULL return */
(*nextp)->f_next = (struct filed *)calloc(1, sizeof(*f));
cfline("*.PANIC\t*", (*nextp)->f_next, "*", "*");
Initialized = 1;
@ -1414,7 +1418,7 @@ init(signo)
continue;
}
if (*p == '+' || *p == '-') {
host[0] = *++p;
host[0] = *p++;
while (isspace(*p))
p++;
if ((!*p) || (*p == '*')) {
@ -1449,6 +1453,7 @@ init(signo)
for (p = strchr(cline, '\0'); isspace(*--p);)
continue;
*++p = '\0';
/* XXX should check for NULL return */
f = (struct filed *)calloc(1, sizeof(*f));
*nextp = f;
nextp = &f->f_next;
@ -1539,13 +1544,24 @@ cfline(line, f, prog, host)
/* save hostname if any */
if (host && *host == '*')
host = NULL;
if (host)
if (host) {
int hl, dl;
/* XXX should check for NULL return */
f->f_host = strdup(host);
hl = strlen(f->f_host);
if (f->f_host[hl-1] == '.')
f->f_host[--hl] = '\0';
dl = strlen(LocalDomain) + 1;
if (hl > dl && f->f_host[hl-dl] == '.')
f->f_host[hl-dl] = '\0';
}
/* save program name if any */
if (prog && *prog == '*')
prog = NULL;
if (prog)
/* XXX should check for NULL return */
f->f_program = strdup(prog);
/* scan through the list of selectors */
@ -2023,6 +2039,7 @@ allowaddr(s)
if ((AllowedPeers = realloc(AllowedPeers,
++NumAllowed * sizeof(struct allowedpeer)))
== NULL) {
/* XXX should use err()... consistency! */
fprintf(stderr, "Out of memory!\n");
exit(EX_OSERR);
}
@ -2176,6 +2193,7 @@ p_open(prog, pid)
return -1;
case 0:
/* XXX should check for NULL return */
argv[0] = strdup("sh");
argv[1] = strdup("-c");
argv[2] = strdup(prog);
@ -2249,8 +2267,8 @@ deadq_enter(pid, name)
}
p = malloc(sizeof(struct deadq_entry));
if (p == 0) {
errno = 0;
if (p == NULL) {
errno = 0; /* XXX why? isn't ENOMEM good enough? */
logerror("panic: out of virtual memory!");
exit(1);
}
@ -2324,7 +2342,7 @@ socksetup(af, bindhostname)
/* Count max number of sockets we may open */
for (maxs = 0, r = res; r; r = r->ai_next, maxs++);
socks = malloc((maxs+1) * sizeof(int));
if (!socks) {
if (socks == NULL) {
logerror("couldn't allocate memory for sockets");
die(0);
}