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dirmngr: Fix memory leak.

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* dirmngr/ldap.c (start_cert_fetch_ldap): Avoid leaking all malloc'ed
arguments.
--
Found using the Clang Static Analyzer.

Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2015-11-19 16:45:09 +01:00
parent a1650b1edf
commit b223cde311
1 changed files with 14 additions and 8 deletions
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22
dirmngr/ldap.c
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@ -525,8 +525,9 @@ start_cert_fetch_ldap (ctrl_t ctrl, cert_fetch_context_t *context,
const char *user; const char *user;
const char *pass; const char *pass;
const char *base; const char *base;
const char *argv[50]; char *argv[50];
int argc; int argc;
int argc_malloced;
char portbuf[30], timeoutbuf[30]; char portbuf[30], timeoutbuf[30];
@ -583,6 +584,8 @@ start_cert_fetch_ldap (ctrl_t ctrl, cert_fetch_context_t *context,
argv[argc++] = user; argv[argc++] = user;
} }
/* All entries in argv from this index on are malloc'ed. */
argc_malloced = argc;
for (; patterns; patterns = patterns->next) for (; patterns; patterns = patterns->next)
{ {
@ -602,8 +605,8 @@ start_cert_fetch_ldap (ctrl_t ctrl, cert_fetch_context_t *context,
{ {
log_error (_("start_cert_fetch: invalid pattern '%s'\n"), log_error (_("start_cert_fetch: invalid pattern '%s'\n"),
patterns->d); patterns->d);
/* fixme: cleanup argv. */ err = gpg_error (GPG_ERR_INV_USER_ID);
return gpg_error (GPG_ERR_INV_USER_ID); goto leave;
} }
if ((sl->flags & 1)) if ((sl->flags & 1))
err = make_url (&url, sl->d, "objectClass=*"); err = make_url (&url, sl->d, "objectClass=*");
@ -611,17 +614,17 @@ start_cert_fetch_ldap (ctrl_t ctrl, cert_fetch_context_t *context,
err = make_url (&url, base, sl->d); err = make_url (&url, base, sl->d);
free_strlist (sl); free_strlist (sl);
if (err) if (err)
{ goto leave;
/* fixme: cleanup argv. */
return err;
}
argv[argc++] = url; argv[argc++] = url;
} }
argv[argc] = NULL; argv[argc] = NULL;
*context = xtrycalloc (1, sizeof **context); *context = xtrycalloc (1, sizeof **context);
if (!*context) if (!*context)
return gpg_error_from_errno (errno); {
err = gpg_error_from_errno (errno);
goto leave;
}
err = ldap_wrapper (ctrl, &(*context)->reader, argv); err = ldap_wrapper (ctrl, &(*context)->reader, argv);
@ -631,6 +634,9 @@ start_cert_fetch_ldap (ctrl_t ctrl, cert_fetch_context_t *context,
*context = NULL; *context = NULL;
} }
leave:
for (; argc_malloced < argc; argc_malloced++)
xfree (argv[argc_malloced]);
return err; return err;
} }