[Pkg-wmaker-commits] [wmifs] 01/118: wmifs: Add BUFFER_SIZE constant.
Doug Torrance
dtorrance-guest at moszumanska.debian.org
Thu Aug 27 02:37:45 UTC 2015
This is an automated email from the git hooks/post-receive script.
dtorrance-guest pushed a commit to branch master
in repository wmifs.
commit e25489a403d473108007391417933987fbc46115
Author: Doug Torrance <dtorrance at monmouthcollege.edu>
Date: Wed Oct 22 16:34:29 2014 -0500
wmifs: Add BUFFER_SIZE constant.
Patch by Stephen Pitts <smpitts at midsouth.rr.com>. First appeared in Debian
package version 1.3b1-4.
From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=41746:
wmifs started crashing on startup on my system,
so I grabbed the source, added -g to the
Makefile, and ran it through gdb.
(Wow, the wonders of Open Source!!).
I found out that it has the hard-coded assumption
that a line in /proc/net/dev will be no longer
than 128 bytes. Since my ethernet card has over
1 GB in traffic , my eth0 line was 129 bytes long.
I added a new constant, BUFFER_SIZE, that
determines the size of the buffer used for fgets.
Right now, its at 512 bytes, so that gives it
a large margin of error, until we have petabyte
Ethernet! The patch is attached.
---
wmifs/wmifs.c | 35 +++++++++++++++++++++++------------
1 file changed, 23 insertions(+), 12 deletions(-)
diff --git a/wmifs/wmifs.c b/wmifs/wmifs.c
index ebdf12b..f7df9b7 100644
--- a/wmifs/wmifs.c
+++ b/wmifs/wmifs.c
@@ -74,6 +74,11 @@
----
Changes:
---
+ 07/21/1999 (Stephen Pitts, smpitts at midsouth.rr.com)
+ * Added new constant: BUFFER_SIZE to determine the size
+ of the buffer used in fgets() operations. Right now,
+ its at 512 bytes. Fixed crashing on my system when
+ one line of /proc/net/dev was longer than 128 bytes
04/05/1998 (Martijn Pieterse, pieterse at xs4all.nl)
* Changed the "middle of the waveform" line color
* Moved the RedrawWindow out of the main loop.
@@ -197,6 +202,8 @@
#define WMIFS_VERSION "1.2.1"
+/* the size of the buffer read from /proc/net/* */
+#define BUFFER_SIZE 512
/**********************/
/* External Variables */
/**********************/
@@ -340,7 +347,7 @@ void wmifs_routine(int argc, char **argv) {
long ipacket, opacket, istat, ostat;
- char temp[128];
+ char temp[BUFFER_SIZE];
char *p;
for (i=0; i<MAX_STAT_DEVICES; i++) {
@@ -562,7 +569,7 @@ void DrawActiveIFS(char *name) {
int get_statistics(char *devname, long *ip, long *op, long *is, long *os) {
FILE *fp;
- char temp[128];
+ char temp[BUFFER_SIZE];
char *p;
char *tokens = " |:\n";
int input, output;
@@ -596,8 +603,8 @@ int get_statistics(char *devname, long *ip, long *op, long *is, long *os) {
/* Read from /proc/net/dev the stats! */
fp = fopen("/proc/net/dev", "r");
- fgets(temp, 128, fp);
- fgets(temp, 128, fp);
+ fgets(temp, BUFFER_SIZE, fp);
+ fgets(temp, BUFFER_SIZE, fp);
input = -1;
output = -1;
@@ -614,7 +621,7 @@ int get_statistics(char *devname, long *ip, long *op, long *is, long *os) {
p = strtok(NULL, tokens);
} while (input == -1 || output == -1);
- while (fgets(temp, 128, fp)) {
+ while (fgets(temp, BUFFER_SIZE, fp)) {
if (strstr(temp, devname)) {
found = 0;
p = strtok(temp, tokens);
@@ -645,15 +652,16 @@ int get_statistics(char *devname, long *ip, long *op, long *is, long *os) {
int stillonline(char *ifs) {
FILE *fp;
- char temp[128];
+ char temp[BUFFER_SIZE];
int i;
i = 0;
fp = fopen("/proc/net/route", "r");
if (fp) {
- while (fgets(temp, 128, fp)) {
+ while (fgets(temp, BUFFER_SIZE, fp)) {
if (strstr(temp, ifs)) {
i = 1; /* Line is alive */
+ break;
}
}
fclose(fp);
@@ -668,7 +676,7 @@ int stillonline(char *ifs) {
int checknetdevs(void) {
FILE *fd;
- char temp[128];
+ char temp[BUFFER_SIZE];
char *p;
int i=0,j;
int k;
@@ -685,11 +693,14 @@ int checknetdevs(void) {
fd = fopen("/proc/net/dev", "r");
if (fd) {
/* Skip the first 2 lines */
- fgets(temp, 128, fd);
- fgets(temp, 128, fd);
- while (fgets(temp, 128, fd)) {
+ fgets(temp, BUFFER_SIZE, fd);
+ fgets(temp, BUFFER_SIZE, fd);
+ while (fgets(temp, BUFFER_SIZE, fd)) {
p = strtok(temp, tokens);
-
+ if(p == NULL) {
+ printf("Barfed on: %s", temp);
+ break;
+ }
/* Skip dummy code */
if (!strncmp(p, "dummy", 5))
--
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-wmaker/wmifs.git
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