Changeset: 28af495bf842 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/28af495bf842
Modified Files:
tools/merovingian/client/monetdb.c
Branch: Jun2023
Log Message:
Check snprintf result so that we don't need dirty tricks to compile.
diffs (31 lines):
diff --git a/tools/merovingian/client/monetdb.c
b/tools/merovingian/client/monetdb.c
--- a/tools/merovingian/client/monetdb.c
+++ b/tools/merovingian/client/monetdb.c
@@ -2509,8 +2509,11 @@ main(int argc, char *argv[])
if (mero_host == NULL)
mero_host = "/tmp";
/* first try the port given (or else its default) */
- snprintf(buf, sizeof(buf), "%s/.s.merovingian.%d",
- mero_host, mero_port == -1 ? MAPI_PORT : mero_port);
+ if (snprintf(buf, sizeof(buf), "%s/.s.merovingian.%d",
+ mero_host, mero_port == -1 ? MAPI_PORT
: mero_port) >= (int) sizeof(buf)) {
+ fprintf(stderr, "monetdb: directory name too long\n");
+ exit(1);
+ }
if ((err = control_ping(buf, -1, NULL)) == NULL) {
mero_host = buf;
} else {
@@ -2530,9 +2533,11 @@ main(int argc, char *argv[])
while ((e = readdir(d)) != NULL) {
if (strncmp(e->d_name,
".s.merovingian.", 15) != 0)
continue;
- snprintf(buf, sizeof(buf), "%s/%s",
mero_host, e->d_name);
- if (stat(buf, &s) == -1)
+ if (snprintf(buf, sizeof(buf), "%s/%s",
mero_host, e->d_name) >= (int) sizeof(buf) ||
+ stat(buf, &s) == -1) {
+ /* too long or doesn't exist */
continue;
+ }
if (S_ISSOCK(s.st_mode)) {
char *nerr;
if ((nerr = control_ping(buf,
-1, NULL)) == NULL) {
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