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authorTobias Stoeckmann <tobias@stoeckmann.org>2024-01-02 22:42:58 +0100
committerDmitry V. Levin <ldv@strace.io>2024-01-03 17:28:06 +0000
commit73d009e9ea8edafc18c7fe3650b25dd6bdce88c1 (patch)
tree6f2241202748293e59b02a6764c615703a193aa4 /modules/pam_unix/passverify.c
parentb285652d864120a967401da28f3d20555f6cc9f5 (diff)
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pam_unix: use getline
Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Diffstat (limited to 'modules/pam_unix/passverify.c')
-rw-r--r--modules/pam_unix/passverify.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/modules/pam_unix/passverify.c b/modules/pam_unix/passverify.c
index 3bcfed7f..2474fa7a 100644
--- a/modules/pam_unix/passverify.c
+++ b/modules/pam_unix/passverify.c
@@ -651,7 +651,7 @@ save_old_password(pam_handle_t *pamh, const char *forwho, const char *oldpass,
int howmany)
#endif
{
- static char buf[16384];
+ char *buf = NULL;
char *s_luser, *s_uid, *s_npas, *s_pas, *pass;
int npas;
FILE *pwfile, *opwfile;
@@ -660,6 +660,7 @@ save_old_password(pam_handle_t *pamh, const char *forwho, const char *oldpass,
int found = 0;
struct passwd *pwd = NULL;
struct stat st;
+ size_t bufsize = 0;
size_t len = strlen(forwho);
#ifdef WITH_SELINUX
char *prev_context_raw = NULL;
@@ -727,7 +728,7 @@ save_old_password(pam_handle_t *pamh, const char *forwho, const char *oldpass,
goto done;
}
- while (fgets(buf, 16380, opwfile)) {
+ while (getline(&buf, &bufsize, opwfile) == -1) {
if (!strncmp(buf, forwho, len) && strchr(":,\n", buf[len]) != NULL) {
char *ep, *sptr = NULL;
long value;
@@ -777,6 +778,7 @@ save_old_password(pam_handle_t *pamh, const char *forwho, const char *oldpass,
break;
}
}
+ free(buf);
fclose(opwfile);
if (!found) {