Use strtok_r() instead of strtok()

lib/util/getgrouplist.c

@@ -72,8 +72,10 @@ sudo_getgrouplist(const char *name, gid_t basegid, gid_t *groups, int *ngroupsp)
     aix_setauthdb((char *) name);
 #endif
     if ((grset = getgrset(name)) != NULL) {
+	char *last;
 	const char *errstr;
-	for (cp = strtok(grset, ","); cp != NULL; cp = strtok(NULL, ",")) {
+
+	for (cp = strtok_r(grset, ",", &last); cp != NULL; cp = strtok_r(NULL, ",", &last)) {
 	    gid = sudo_strtoid(cp, NULL, NULL, &errstr);
 	    if (errstr == NULL && gid != basegid) {
 		if (ngroups == grpsize)

lib/util/regress/glob/globtest.c

@@ -118,7 +118,7 @@ main(int argc, char **argv)
 			}
 			*ep = '\0';
 			entry.flags = 0;
-			for ((cp = strtok(cp, "|")); cp != NULL; (cp = strtok(NULL, "|"))) {
+			for ((cp = strtok_r(cp, "|", &ep)); cp != NULL; (cp = strtok_r(NULL, "|", &ep))) {
 				if (strcmp(cp, "GLOB_APPEND") == 0)
 					entry.flags |= GLOB_APPEND;
 				else if (strcmp(cp, "GLOB_DOOFFS") == 0)

lib/util/sudo_debug.c

@@ -148,7 +148,7 @@ static struct sudo_debug_output *
 sudo_debug_new_output(struct sudo_debug_instance *instance,
     struct sudo_debug_file *debug_file)
 {
-    char *buf, *cp, *subsys, *pri;
+    char *buf, *cp, *last, *subsys, *pri;
     struct sudo_debug_output *output;
     unsigned int i, j;
 
@@ -205,7 +205,7 @@ sudo_debug_new_output(struct sudo_debug_instance *instance,
     buf = strdup(debug_file->debug_flags);
     if (buf == NULL)
 	goto bad;
-    for ((cp = strtok(buf, ",")); cp != NULL; (cp = strtok(NULL, ","))) {
+    for ((cp = strtok_r(buf, ",", &last)); cp != NULL; (cp = strtok_r(NULL, ",", &last))) {
 	/* Should be in the form subsys@pri. */
 	subsys = cp;
 	if ((pri = strchr(cp, '@')) == NULL)

plugins/group_file/getgrent.c

@@ -124,11 +124,13 @@ next_entry:
     if (len > 0 && colon[len - 1] == '\n')
 	colon[len - 1] = '\0';
     if (*colon != '\0') {
+	char *last;
+
 	gr.gr_mem = gr_mem;
-	cp = strtok(colon, ",");
+	cp = strtok_r(colon, ",", &last);
 	for (n = 0; cp != NULL && n < GRMEM_MAX; n++) {
 	    gr.gr_mem[n] = cp;
-	    cp = strtok(NULL, ",");
+	    cp = strtok_r(NULL, ",", &last);
 	}
 	gr.gr_mem[n++] = NULL;
     } else

plugins/group_file/plugin_test.c

@@ -125,13 +125,15 @@ group_plugin_load(char *plugin_info)
             }
         }
 	if (ac != 0) 	{
+	    char *last;
+
 	    argv = malloc(ac * sizeof(char *));
 	    if (argv == NULL) {
 		perror(NULL);
 		return -1;
 	    }
 	    ac = 0;
-	    for ((cp = strtok(args, " \t")); cp; (cp = strtok(NULL, " \t")))
+	    for ((cp = strtok_r(args, " \t", &last)); cp != NULL; (cp = strtok_r(NULL, " \t", &last)))
 		argv[ac++] = cp;
 	}
     }

plugins/sample/sample_plugin.c

@@ -243,7 +243,7 @@ build_command_info(const char *command)
 static char *
 find_editor(int nfiles, char * const files[], char **argv_out[])
 {
-    char *cp, **ep, **nargv, *editor, *editor_path;
+    char *cp, *last, **ep, **nargv, *editor, *editor_path;
     int ac, i, nargc, wasblank;
 
     /* Lookup EDITOR in user's environment. */
@@ -275,7 +275,7 @@ find_editor(int nfiles, char * const files[], char **argv_out[])
 	}
     }
     /* If we can't find the editor in the user's PATH, give up. */
-    cp = strtok(editor, " \t");
+    cp = strtok_r(editor, " \t", &last);
     if (cp == NULL ||
 	(editor_path = find_in_path(editor, plugin_state.envp)) == NULL) {
 	free(editor);
@@ -291,7 +291,7 @@ find_editor(int nfiles, char * const files[], char **argv_out[])
     }
     for (ac = 0; cp != NULL && ac < nargc; ac++) {
 	nargv[ac] = cp;
-	cp = strtok(NULL, " \t");
+	cp = strtok_r(NULL, " \t", &last);
     }
     nargv[ac++] = "--";
     for (i = 0; i < nfiles; )

plugins/sudoers/group_plugin.c

@@ -124,7 +124,7 @@ group_plugin_load(char *plugin_info)
     if (args != NULL) {
 	int ac = 0;
 	bool wasblank = true;
-	char *cp;
+	char *cp, *last;
 
         for (cp = args; *cp != '\0'; cp++) {
             if (isblank((unsigned char)*cp)) {
@@ -134,14 +134,14 @@ group_plugin_load(char *plugin_info)
                 ac++;
             }
         }
-	if (ac != 0) 	{
+	if (ac != 0) {
 	    argv = reallocarray(NULL, ac, sizeof(char *));
 	    if (argv == NULL) {
 		sudo_warnx(U_("unable to allocate memory"));
 		goto done;
 	    }
 	    ac = 0;
-	    for ((cp = strtok(args, " \t")); cp; (cp = strtok(NULL, " \t")))
+	    for ((cp = strtok_r(args, " \t", &last)); cp != NULL; (cp = strtok_r(NULL, " \t", &last)))
 		argv[ac++] = cp;
 	}
     }

plugins/sudoers/interfaces.c

@@ -57,14 +57,14 @@ static struct interface_list interfaces;
 bool
 set_interfaces(const char *ai)
 {
-    char *addrinfo, *addr, *mask;
+    char *addrinfo, *addr, *mask, *last;
     struct interface *ifp;
     bool rval = false;
     debug_decl(set_interfaces, SUDOERS_DEBUG_NETIF)
 
     if ((addrinfo = strdup(ai)) == NULL)
 	debug_return_bool(false);
-    for (addr = strtok(addrinfo, " \t"); addr != NULL; addr = strtok(NULL, " \t")) {
+    for (addr = strtok_r(addrinfo, " \t", &last); addr != NULL; addr = strtok_r(NULL, " \t", &last)) {
 	/* Separate addr and mask. */
 	if ((mask = strchr(addr, '/')) == NULL)
 	    continue;

plugins/sudoers/ldap.c

@@ -425,7 +425,7 @@ struct sudo_nss sudo_nss_ldap = {
 static bool
 sudo_ldap_conf_add_ports(void)
 {
-    char *host, *port, defport[13];
+    char *host, *last, *port, defport[13];
     char hostbuf[LINE_MAX * 2];
     int len;
     debug_decl(sudo_ldap_conf_add_ports, SUDOERS_DEBUG_LDAP)
@@ -437,7 +437,7 @@ sudo_ldap_conf_add_ports(void)
 	debug_return_bool(false);
     }
 
-    for ((host = strtok(ldap_conf.host, " \t")); host; (host = strtok(NULL, " \t"))) {
+    for ((host = strtok_r(ldap_conf.host, " \t", &last)); host; (host = strtok_r(NULL, " \t", &last))) {
 	if (hostbuf[0] != '\0')
 	    CHECK_STRLCAT(hostbuf, " ", sizeof(hostbuf));
 	CHECK_STRLCAT(hostbuf, host, sizeof(hostbuf));
@@ -471,20 +471,21 @@ static int
 sudo_ldap_parse_uri(const struct ldap_config_str_list *uri_list)
 {
     const struct ldap_config_str *entry;
-    char *buf, *uri, *host, *cp, *port;
+    char *buf, hostbuf[LINE_MAX];
-    char hostbuf[LINE_MAX];
     int nldap = 0, nldaps = 0;
     int rc = -1;
     debug_decl(sudo_ldap_parse_uri, SUDOERS_DEBUG_LDAP)
 
     hostbuf[0] = '\0';
     STAILQ_FOREACH(entry, uri_list, entries) {
+	char *cp, *host, *last, *port, *uri;
+
 	buf = strdup(entry->val);
 	if (buf == NULL) {
 	    sudo_warnx(U_("unable to allocate memory"));
 	    goto done;
 	}
-	for ((uri = strtok(buf, " \t")); uri != NULL; (uri = strtok(NULL, " \t"))) {
+	for ((uri = strtok_r(buf, " \t", &last)); uri != NULL; (uri = strtok_r(NULL, " \t", &last))) {
 	    if (strncasecmp(uri, "ldap://", 7) == 0) {
 		nldap++;
 		host = uri + 7;

plugins/sudoers/logging.c

@@ -646,7 +646,7 @@ send_mail(const char *fmt, ...)
 	    break;
 	case 0:
 	    {
-		char *argv[MAX_MAILFLAGS + 1];
+		char *last, *argv[MAX_MAILFLAGS + 1];
 		char *mflags, *mpath = def_mailerpath;
 		int i;
 
@@ -673,10 +673,10 @@ send_mail(const char *fmt, ...)
 		    argv[0] = mpath;
 
 		i = 1;
-		if ((p = strtok(mflags, " \t"))) {
+		if ((p = strtok_r(mflags, " \t", &last))) {
 		    do {
 			argv[i] = p;
-		    } while (++i < MAX_MAILFLAGS && (p = strtok(NULL, " \t")));
+		    } while (++i < MAX_MAILFLAGS && (p = strtok_r(NULL, " \t", &last)));
 		}
 		argv[i] = NULL;
 

plugins/sudoers/regress/logging/check_wrap.c

@@ -57,7 +57,7 @@ main(int argc, char *argv[])
 {
     size_t len;
     FILE *fp;
-    char *cp, *dash, *line, lines[2][2048];
+    char *line, lines[2][2048];
     int lineno = 0;
     int which = 0;
 
@@ -78,14 +78,18 @@ main(int argc, char *argv[])
      * 60-80,40
      */
     while ((line = fgets(lines[which], sizeof(lines[which]), fp)) != NULL) {
+	char *cp, *last;
+
 	len = strcspn(line, "\n");
 	line[len] = '\0';
 
 	/* If we read the 2nd line, parse list of line lengths and check. */
 	if (which) {
 	    lineno++;
-	    for (cp = strtok(lines[1], ","); cp != NULL; cp = strtok(NULL, ",")) {
+	    for (cp = strtok_r(lines[1], ",", &last); cp != NULL; cp = strtok_r(NULL, ",", &last)) {
+		char *dash;
 		size_t maxlen;
+
 		/* May be either a number or a range. */
 		dash = strchr(cp, '-');
 		if (dash != NULL) {

plugins/sudoers/sudo_nss.c

@@ -69,7 +69,7 @@ struct sudo_nss_list *
 sudo_read_nss(void)
 {
     FILE *fp;
-    char *cp, *line = NULL;
+    char *line = NULL;
     size_t linesize = 0;
 #ifdef HAVE_SSSD
     bool saw_sss = false;
@@ -86,6 +86,8 @@ sudo_read_nss(void)
 	goto nomatch;
 
     while (sudo_parseln(&line, &linesize, NULL, fp) != -1) {
+	char *cp, *last;
+
 	/* Skip blank or comment lines */
 	if (*line == '\0')
 	    continue;
@@ -95,7 +97,7 @@ sudo_read_nss(void)
 	    continue;
 
 	/* Parse line */
-	for ((cp = strtok(line + 8, " \t")); cp != NULL; (cp = strtok(NULL, " \t"))) {
+	for ((cp = strtok_r(line + 8, " \t", &last)); cp != NULL; (cp = strtok_r(NULL, " \t", &last))) {
 	    if (strcasecmp(cp, "files") == 0 && !saw_files) {
 		SUDO_NSS_CHECK_UNUSED(sudo_nss_file, "files");
 		TAILQ_INSERT_TAIL(&snl, &sudo_nss_file, entries);
@@ -149,7 +151,7 @@ struct sudo_nss_list *
 sudo_read_nss(void)
 {
     FILE *fp;
-    char *cp, *ep, *line = NULL;
+    char *cp, *ep, *last, *line = NULL;
     size_t linesize = 0;
 #ifdef HAVE_SSSD
     bool saw_sss = false;
@@ -178,7 +180,7 @@ sudo_read_nss(void)
 	    continue;
 
 	/* Parse line */
-	for ((cp = strtok(cp, ",")); cp != NULL; (cp = strtok(NULL, ","))) {
+	for ((cp = strtok_r(cp, ",", &last)); cp != NULL; (cp = strtok_r(NULL, ",", &last))) {
 	    /* Trim leading whitespace. */
 	    while (isspace((unsigned char)*cp))
 		cp++;

plugins/sudoers/sudoreplay.c

@@ -247,7 +247,7 @@ main(int argc, char *argv[])
 	case 'f':
 	    /* Set the replay filter. */
 	    def_filter = false;
-	    for (cp = strtok(optarg, ","); cp; cp = strtok(NULL, ",")) {
+	    for (cp = strtok_r(optarg, ",", &ep); cp; cp = strtok_r(NULL, ",", &ep)) {
 		if (strcmp(cp, "stdout") == 0)
 		    io_log_files[IOFD_STDOUT].enabled = true;
 		else if (strcmp(cp, "stderr") == 0)

plugins/sudoers/tsgetgrpw.c

@@ -274,11 +274,13 @@ next_entry:
     if (len > 0 && colon[len - 1] == '\n')
 	colon[len - 1] = '\0';
     if (*colon != '\0') {
+	char *last;
+
 	gr.gr_mem = gr_mem;
-	cp = strtok(colon, ",");
+	cp = strtok_r(colon, ",", &last);
 	for (n = 0; cp != NULL && n < GRMEM_MAX; n++) {
 	    gr.gr_mem[n] = cp;
-	    cp = strtok(NULL, ",");
+	    cp = strtok_r(NULL, ",", &last);
 	}
 	gr.gr_mem[n++] = NULL;
     } else