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shadow-utils/shadow-4.6-coverity.patch

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diff -up shadow-4.6/lib/commonio.c.coverity shadow-4.6/lib/commonio.c
--- shadow-4.6/lib/commonio.c.coverity 2018-10-10 09:50:59.307738194 +0200
+++ shadow-4.6/lib/commonio.c 2018-10-10 09:55:32.919319048 +0200
@@ -382,7 +382,7 @@ int commonio_lock_nowait (struct commoni
char* lock = NULL;
size_t lock_file_len;
size_t file_len;
- int err;
+ int err = 0;
if (db->locked) {
return 1;
@@ -391,12 +391,10 @@ int commonio_lock_nowait (struct commoni
lock_file_len = strlen(db->filename) + 6; /* sizeof ".lock" */
file = (char*)malloc(file_len);
if(file == NULL) {
- err = ENOMEM;
goto cleanup_ENOMEM;
}
lock = (char*)malloc(lock_file_len);
if(lock == NULL) {
- err = ENOMEM;
goto cleanup_ENOMEM;
}
snprintf (file, file_len, "%s.%lu",
diff -up shadow-4.6/libmisc/console.c.coverity shadow-4.6/libmisc/console.c
--- shadow-4.6/libmisc/console.c.coverity 2018-04-29 18:42:37.000000000 +0200
+++ shadow-4.6/libmisc/console.c 2018-10-10 11:56:51.368837533 +0200
@@ -50,7 +50,7 @@ static bool is_listed (const char *cfgin
static bool is_listed (const char *cfgin, const char *tty, bool def)
{
FILE *fp;
- char buf[200], *s;
+ char buf[1024], *s;
const char *cons;
/*
@@ -70,7 +70,8 @@ static bool is_listed (const char *cfgin
if (*cons != '/') {
char *pbuf;
- strcpy (buf, cons);
+ strncpy (buf, cons, sizeof (buf));
+ buf[sizeof (buf) - 1] = '\0';
pbuf = &buf[0];
while ((s = strtok (pbuf, ":")) != NULL) {
if (strcmp (s, tty) == 0) {
diff -up shadow-4.6/lib/spawn.c.coverity shadow-4.6/lib/spawn.c
--- shadow-4.6/lib/spawn.c.coverity 2018-04-29 18:42:37.000000001 +0200
+++ shadow-4.6/lib/spawn.c 2018-10-10 11:36:49.035784609 +0200
@@ -69,7 +69,7 @@ int run_command (const char *cmd, const
do {
wpid = waitpid (pid, status, 0);
} while ( ((pid_t)-1 == wpid && errno == EINTR)
- || (wpid != pid));
+ || ((pid_t)-1 != wpid && wpid != pid));
if ((pid_t)-1 == wpid) {
fprintf (stderr, "%s: waitpid (status: %d): %s\n",
diff -up shadow-4.6/src/useradd.c.coverity shadow-4.6/src/useradd.c
--- shadow-4.6/src/useradd.c.coverity 2018-10-10 09:50:59.303738098 +0200
+++ shadow-4.6/src/useradd.c 2018-10-12 13:51:54.480490257 +0200
@@ -314,7 +314,7 @@ static void fail_exit (int code)
static void get_defaults (void)
{
FILE *fp;
- char* default_file = USER_DEFAULTS_FILE;
+ char *default_file = USER_DEFAULTS_FILE;
char buf[1024];
char *cp;
@@ -324,6 +324,8 @@ static void get_defaults (void)
len = strlen(prefix) + strlen(USER_DEFAULTS_FILE) + 2;
default_file = malloc(len);
+ if (default_file == NULL)
+ return;
wlen = snprintf(default_file, len, "%s/%s", prefix, USER_DEFAULTS_FILE);
assert (wlen == (int) len -1);
}
@@ -334,7 +336,7 @@ static void get_defaults (void)
fp = fopen (default_file, "r");
if (NULL == fp) {
- return;
+ goto getdef_err;
}
/*
@@ -445,7 +447,7 @@ static void get_defaults (void)
}
}
(void) fclose (fp);
-
+ getdef_err:
if(prefix[0]) {
free(default_file);
}
@@ -480,8 +482,8 @@ static int set_defaults (void)
FILE *ifp;
FILE *ofp;
char buf[1024];
- char* new_file = NEW_USER_FILE;
- char* default_file = USER_DEFAULTS_FILE;
+ char *new_file = NULL;
+ char *default_file = USER_DEFAULTS_FILE;
char *cp;
int ofd;
int wlen;
@@ -492,17 +494,30 @@ static int set_defaults (void)
bool out_shell = false;
bool out_skel = false;
bool out_create_mail_spool = false;
+ size_t len;
+ int ret = -1;
- if(prefix[0]) {
- size_t len;
- len = strlen(prefix) + strlen(NEW_USER_FILE) + 2;
- new_file = malloc(len);
- wlen = snprintf(new_file, len, "%s/%s", prefix, NEW_USER_FILE);
- assert (wlen == (int) len -1);
+ len = strlen(prefix) + strlen(NEW_USER_FILE) + 2;
+ new_file = malloc(len);
+ if (new_file == NULL) {
+ fprintf (stderr,
+ _("%s: cannot create new defaults file: %s\n"),
+ Prog, strerror(errno));
+ return -1;
+ }
+ wlen = snprintf(new_file, len, "%s%s%s", prefix, prefix[0]?"/":"", NEW_USER_FILE);
+ assert (wlen <= (int) len -1);
+ if(prefix[0]) {
len = strlen(prefix) + strlen(USER_DEFAULTS_FILE) + 2;
default_file = malloc(len);
+ if (default_file == NULL) {
+ fprintf (stderr,
+ _("%s: cannot create new defaults file: %s\n"),
+ Prog, strerror(errno));
+ goto setdef_err;
+ }
wlen = snprintf(default_file, len, "%s/%s", prefix, USER_DEFAULTS_FILE);
assert (wlen == (int) len -1);
}
@@ -515,7 +530,7 @@ static int set_defaults (void)
fprintf (stderr,
_("%s: cannot create new defaults file\n"),
Prog);
- return -1;
+ goto setdef_err;
}
ofp = fdopen (ofd, "w");
@@ -523,7 +538,7 @@ static int set_defaults (void)
fprintf (stderr,
_("%s: cannot open new defaults file\n"),
Prog);
- return -1;
+ goto setdef_err;
}
/*
@@ -550,7 +565,7 @@ static int set_defaults (void)
_("%s: line too long in %s: %s..."),
Prog, default_file, buf);
(void) fclose (ifp);
- return -1;
+ goto setdef_err;
}
}
@@ -614,7 +629,7 @@ static int set_defaults (void)
|| (fsync (fileno (ofp)) != 0)
|| (fclose (ofp) != 0)) {
unlink (new_file);
- return -1;
+ goto setdef_err;
}
/*
@@ -629,7 +644,7 @@ static int set_defaults (void)
_("%s: Cannot create backup file (%s): %s\n"),
Prog, buf, strerror (err));
unlink (new_file);
- return -1;
+ goto setdef_err;
}
/*
@@ -640,11 +655,11 @@ static int set_defaults (void)
fprintf (stderr,
_("%s: rename: %s: %s\n"),
Prog, new_file, strerror (err));
- return -1;
+ goto setdef_err;
}
#ifdef WITH_AUDIT
audit_logger (AUDIT_USYS_CONFIG, Prog,
- "changing-useradd-defaults",
+ "changing useradd defaults",
NULL, AUDIT_NO_ID,
SHADOW_AUDIT_SUCCESS);
#endif
@@ -654,13 +669,14 @@ static int set_defaults (void)
(unsigned int) def_group, def_home, def_shell,
def_inactive, def_expire, def_template,
def_create_mail_spool));
-
+ ret = 0;
+ setdef_err:
+ free(new_file);
if(prefix[0]) {
- free(new_file);
free(default_file);
}
- return 0;
+ return ret;
}
/*
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