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authorGöran Uddeborg <goeran@uddeborg.se>2024-05-13 15:12:36 +0200
committerGöran Uddeborg <goeran@uddeborg.se>2024-05-13 15:45:32 +0200
commit55a20554f9cfb502e73a5d507828d3ce9aea1a8d (patch)
tree9bb2aa9976bf320e4d3ca99977a49f3904be67bd /libpam/pam_modutil_check_user.c
parent99888b2566ac1694b610867e170b51d4556842f0 (diff)
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libpam: make /etc/passwd checks 8 bit clean
libpam/pam_modutil_check_user.c: explicitly convert the character read from /etc/passwd to type "char" to get the same signedness as the one compared with. Otherwise the functionality will depend on the (implementation defined) signedness of "char" on the platform built for.
Diffstat (limited to 'libpam/pam_modutil_check_user.c')
-rw-r--r--libpam/pam_modutil_check_user.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libpam/pam_modutil_check_user.c b/libpam/pam_modutil_check_user.c
index 92fc74b1..4034e59d 100644
--- a/libpam/pam_modutil_check_user.c
+++ b/libpam/pam_modutil_check_user.c
@@ -51,7 +51,7 @@ pam_modutil_check_user_in_passwd(pam_handle_t *pamh,
*/
for (p = user_name; *p != '\0'; p++) {
c = fgetc(fp);
- if (c == EOF || c == '\n' || c != *p)
+ if (c == EOF || c == '\n' || (char)c != *p)
break;
}