Fix/eliminate use of atol

9 files changed, 132 insertions, 54 deletions

diff --git a/coreutils/printf.c b/coreutils/printf.c
index 181c70bfb..76f59686b 100644
--- a/coreutils/printf.c
+++ b/coreutils/printf.c
@@ -405,48 +405,24 @@ print_direc(char *start, size_t length, int field_width, int precision,
 static unsigned long xstrtoul(char *arg)
 {
         unsigned long result;
-        char *endptr;
-        //int errno_save = errno;
-
-        assert(arg!=NULL);
-
-        errno = 0;
-        result = strtoul(arg, &endptr, 0);
-        if (errno != 0 || *endptr!='\0' || endptr==arg)
+        if (safe_strtoul(arg, &result))
                 fprintf(stderr, "%s", arg);
-        //errno = errno_save;
         return result;
 }
 
 static long xstrtol(char *arg)
 {
         long result;
-        char *endptr;
-        //int errno_save = errno;
-
-        assert(arg!=NULL);
-
-        errno = 0;
-        result = strtoul(arg, &endptr, 0);
-        if (errno != 0 || *endptr!='\0' || endptr==arg)
+        if (safe_strtol(arg, &result))
                 fprintf(stderr, "%s", arg);
-        //errno = errno_save;
         return result;
 }
 
 static double xstrtod(char *arg)
 {
         double result;
-        char *endptr;
-        //int errno_save = errno;
-
-        assert(arg!=NULL);
-
-        errno = 0;
-        result = strtod(arg, &endptr);
-        if (errno != 0 || *endptr!='\0' || endptr==arg)
+        if (safe_strtod(arg, &result))
                 fprintf(stderr, "%s", arg);
-        //errno = errno_save;
         return result;
 }
 
diff --git a/libbb/Makefile.in b/libbb/Makefile.in
index a656a5a53..632208184 100644
--- a/libbb/Makefile.in
+++ b/libbb/Makefile.in
@@ -1,6 +1,6 @@
 # Makefile for busybox
 #
-# Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
+# Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -72,17 +72,21 @@ LIBBB_MSRC3:=$(LIBBB_DIR)xgetularg.c
 LIBBB_MOBJ3:=xgetularg_bnd_sfx.o xgetlarg_bnd_sfx.o getlarg10_sfx.o \
         xgetularg_bnd.o xgetularg10_bnd.o xgetularg10.o
 
+LIBBB_MSRC4:=$(LIBBB_DIR)/safe_strtol.c
+LIBBB_MOBJ4:=safe_strtoi.o safe_strtod.o safe_strtol.o safe_strtoul.o
+
 LIBBB_MOBJS0=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ0))
 LIBBB_MOBJS1=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ1))
 LIBBB_MOBJS2=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ2))
 LIBBB_MOBJS3=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ3))
+LIBBB_MOBJS4=$(patsubst %,$(LIBBB_DIR)%, $(LIBBB_MOBJ4))
 
 libraries-y+=$(LIBBB_DIR)$(LIBBB_AR)
 
 $(LIBBB_DIR)$(LIBBB_AR): $(LIBBB_OBJS) $(LIBBB_MOBJS0) $(LIBBB_MOBJS1) \
-        $(LIBBB_MOBJS2) $(LIBBB_MOBJS3)
+        $(LIBBB_MOBJS2) $(LIBBB_MOBJS3) $(LIBBB_MOBJS4)
         $(AR) -ro $@ $(LIBBB_OBJS) $(LIBBB_MOBJS0) $(LIBBB_MOBJS1) \
-                $(LIBBB_MOBJS2) $(LIBBB_MOBJS3) 
+                $(LIBBB_MOBJS2) $(LIBBB_MOBJS3) $(LIBBB_MOBJS4)
 
 $(LIBBB_MOBJS0): $(LIBBB_MSRC0)
         $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -DL_$(notdir $*) -c $< -o $@
@@ -96,3 +100,6 @@ $(LIBBB_MOBJS2): $(LIBBB_MSRC2)
 $(LIBBB_MOBJS3): $(LIBBB_MSRC3)
         $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -DL_$(notdir $*) -c $< -o $@
 
+$(LIBBB_MOBJS4): $(LIBBB_MSRC4)
+        $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -DL_$(notdir $*) -c $< -o $@
+
diff --git a/libbb/safe_strtol.c b/libbb/safe_strtol.c
new file mode 100644
index 000000000..fcbdba878
--- /dev/null
+++ b/libbb/safe_strtol.c
@@ -0,0 +1,92 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <assert.h>
+#include "libbb.h"
+
+#ifdef L_safe_strtoi
+extern
+int safe_strtoi(char *arg, int* value)
+{
+        int error;
+        long lvalue = *value;
+        error = safe_strtol(arg, &lvalue);
+        *value = (int) lvalue;
+        return error;
+}
+#endif
+
+#ifdef L_safe_strtod
+extern
+int safe_strtod(char *arg, double* value)
+{
+        char *endptr;
+        int errno_save = errno;
+
+        assert(arg!=NULL);
+        errno = 0;
+        *value = strtod(arg, &endptr);
+        if (errno != 0 || *endptr!='\0' || endptr==arg) {
+                return 1;
+        }
+        errno = errno_save;
+        return 0;
+}
+#endif
+
+#ifdef L_safe_strtol
+extern
+int safe_strtol(char *arg, long* value)
+{
+        char *endptr;
+        int errno_save = errno;
+
+        assert(arg!=NULL);
+        errno = 0;
+        *value = strtol(arg, &endptr, 0);
+        if (errno != 0 || *endptr!='\0' || endptr==arg) {
+                return 1;
+        }
+        errno = errno_save;
+        return 0;
+}
+#endif
+
+#ifdef L_safe_strtoul
+extern
+int safe_strtoul(char *arg, unsigned long* value)
+{
+        char *endptr;
+        int errno_save = errno;
+
+        assert(arg!=NULL);
+        errno = 0;
+        *value = strtoul(arg, &endptr, 0);
+        if (errno != 0 || *endptr!='\0' || endptr==arg) {
+                return 1;
+        }
+        errno = errno_save;
+        return 0;
+}
+#endif
+
diff --git a/loginutils/getty.c b/loginutils/getty.c
index 4219ff821..b12b88fb1 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -955,22 +955,15 @@ static int caps_lock(const char *s)
 /* bcode - convert speed string to speed code; return 0 on failure */
 static int bcode(const char *s)
 {
-#if 0
-        struct Speedtab *sp;
-        long speed = atol(s);
-
-        for (sp = speedtab; sp->speed; sp++)
-                if (sp->speed == speed)
-                        return (sp->code);
-        return (0);
-#else
         int r;
-
-        if ((r = bb_value_to_baud(atol(s))) > 0) {
+        unsigned long value;
+        if (safe_strtoul(s, &value)) {
+                return -1;
+        }
+        if ((r = bb_value_to_baud(value)) > 0) {
                 return r;
         }
         return 0;
-#endif
 }
 
 /* error - report errors to console or syslog; only understands %s and %m */
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index 4f6be1196..17ee8a536 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -147,7 +147,10 @@ static int ftp_recieve(ftp_host_info_t *server, FILE *control_stream,
         fd_data = xconnect_ftpdata(server, buf);
 
         if (ftpcmd("SIZE ", server_path, control_stream, buf) == 213) {
-                filesize = atol(buf + 4);
+                unsigned long value=filesize;
+                if (safe_strtoul(buf + 4, &filesize))
+                        bb_error_msg_and_die("SIZE error: %s", buf + 4);
+                filesize = value;
         }
 
         if ((local_path[0] == '-') && (local_path[1] == '\0')) {
diff --git a/networking/ifconfig.c b/networking/ifconfig.c
index 9fdab3c3f..341998d8d 100644
--- a/networking/ifconfig.c
+++ b/networking/ifconfig.c
@@ -15,7 +15,7 @@
  * Foundation;  either  version 2 of the License, or  (at
  * your option) any later version.
  *
- * $Id: ifconfig.c,v 1.27 2003/11/14 03:04:08 andersen Exp $
+ * $Id: ifconfig.c,v 1.28 2004/03/06 22:11:44 andersen Exp $
  *
  */
 
@@ -394,8 +394,9 @@ int ifconfig_main(int argc, char **argv)
                                                 safe_strncpy(host, *argv, (sizeof host));
 #ifdef CONFIG_FEATURE_IPV6
                                                 if ((prefix = strchr(host, '/'))) {
-                                                        prefix_len = atol(prefix + 1);
-                                                        if ((prefix_len < 0) || (prefix_len > 128)) {
+                                                        if (safe_strtoi(prefix + 1, &prefix_len) ||
+                                                                (prefix_len < 0) || (prefix_len > 128))
+                                                        {
                                                                 ++goterr;
                                                                 goto LOOP;
                                                         }
diff --git a/networking/ipcalc.c b/networking/ipcalc.c
index 2f1c02b7b..d75c883b8 100644
--- a/networking/ipcalc.c
+++ b/networking/ipcalc.c
@@ -119,8 +119,7 @@ int ipcalc_main(int argc, char **argv)
                         if (*prefixstr) {
                                 unsigned int msk;
 
-                                netprefix = atol(prefixstr);
-                                if (netprefix > 32) {
+                                                                if (safe_strtoul(prefixstr, &netprefix) || netprefix > 32) {
                                         IPCALC_MSG(bb_error_msg_and_die("bad IP prefix: %s\n", prefixstr),
                                                 exit(EXIT_FAILURE));
                                 }
diff --git a/networking/route.c b/networking/route.c
index 083149a3d..19942f421 100644
--- a/networking/route.c
+++ b/networking/route.c
@@ -15,7 +15,7 @@
  * Foundation;  either  version 2 of the License, or  (at
  * your option) any later version.
  *
- * $Id: route.c,v 1.22 2003/03/19 09:12:39 mjn3 Exp $
+ * $Id: route.c,v 1.23 2004/03/06 22:11:44 andersen Exp $
  *
  * displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru>
  * adjustments by Larry Doolittle  <LRDoolittle@lbl.gov>
@@ -351,8 +351,7 @@ static int INET6_setroute(int action, int options, char **args)
                 memset(&sa6, 0, sizeof(sa6));
         } else {
                 if ((cp = strchr(target, '/'))) {
-                        prefix_len = atol(cp + 1);
-                        if ((prefix_len < 0) || (prefix_len > 128))
+                        if (safe_strtod(cp + 1, &prefix_len) || (prefix_len < 0) || (prefix_len > 128))
                                 bb_show_usage();
                         *cp = 0;
                 } else {
diff --git a/networking/wget.c b/networking/wget.c
index 823a053db..cb0790ea7 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -385,7 +385,11 @@ read_response:
                          */
                         while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
                                 if (strcasecmp(buf, "content-length") == 0) {
-                                        filesize = atol(s);
+                                        unsigned long value;
+                                        if (safe_strtoul(s, &value)) {
+                                                close_delete_and_die("content-length %s is garbage", s);
+                                        }
+                                        filesize = value;
                                         got_clen = 1;
                                         continue;
                                 }
@@ -452,7 +456,11 @@ read_response:
                  * Querying file size
                  */
                 if (ftpcmd("SIZE /", target.path, sfp, buf) == 213) {
-                        filesize = atol(buf+4);
+                        unsigned long value;
+                        if (safe_strtoul(buf+4, &value)) {
+                                close_delete_and_die("SIZE value is garbage");
+                        }
+                        filesize = value;
                         got_clen = 1;
                 }
                 
@@ -838,7 +846,7 @@ progressmeter(int flag)
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: wget.c,v 1.69 2004/02/22 00:27:34 bug1 Exp $
+ *      $Id: wget.c,v 1.70 2004/03/06 22:11:44 andersen Exp $
  */