diff options
| author | Michael Santos <[email protected]> | 2010-04-12 20:22:03 -0400 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2010-05-03 13:46:38 +0200 |
| commit | d1b44cb27a59e45386f57e51f352dba0a3735a76 (patch) | |
| tree | b424396c5f75acbfdde5c50cb60b7d8ff7ec5387 /erts/etc/common/inet_gethost.c | |
| parent | 3a68c36ca7aed71d643ea29460e36fec7e56817d (diff) | |
| download | otp-d1b44cb27a59e45386f57e51f352dba0a3735a76.tar.gz otp-d1b44cb27a59e45386f57e51f352dba0a3735a76.tar.bz2 otp-d1b44cb27a59e45386f57e51f352dba0a3735a76.zip | |
Truncate debug messages
When the undocumented ERL_INET_GETHOST_DEBUG environment variable
is set to 5, very long hostnames can overflow the buffer used to
construct the debug message. Truncate debug messages if they exceed
the size of the buffer.
export ERL_INET_GETHOST_DEBUG=5
inet:gethostbyname(lists:duplicate(5000,"x")).
Diffstat (limited to 'erts/etc/common/inet_gethost.c')
| -rw-r--r-- | erts/etc/common/inet_gethost.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/erts/etc/common/inet_gethost.c b/erts/etc/common/inet_gethost.c index ff16ee02c4..bd2be4754b 100644 --- a/erts/etc/common/inet_gethost.c +++ b/erts/etc/common/inet_gethost.c @@ -52,6 +52,8 @@ # include "config.h" #endif +#include "erl_printf.h" + #ifdef WIN32 #define WIN32_LEAN_AND_MEAN @@ -2552,7 +2554,7 @@ static void debugf(char *format, ...) sprintf(buff,"%s[%d] (DEBUG):",program_name,(int) getpid()); #endif ptr = buff + strlen(buff); - vsprintf(ptr,format,ap); + erts_vsnprintf(ptr,sizeof(buff)-strlen(buff)-2,format,ap); strcat(ptr,"\r\n"); #ifdef WIN32 if (debug_console_allocated != INVALID_HANDLE_VALUE) { @@ -2574,7 +2576,7 @@ static void warning(char *format, ...) va_start(ap,format); sprintf(buff,"%s[%d]: WARNING:",program_name, (int) getpid()); ptr = buff + strlen(buff); - vsprintf(ptr,format,ap); + erts_vsnprintf(ptr,sizeof(buff)-strlen(buff)-2,format,ap); strcat(ptr,"\r\n"); #ifdef WIN32 { @@ -2596,7 +2598,7 @@ static void fatal(char *format, ...) va_start(ap,format); sprintf(buff,"%s[%d]: FATAL ERROR:",program_name, (int) getpid()); ptr = buff + strlen(buff); - vsprintf(ptr,format,ap); + erts_vsnprintf(ptr,sizeof(buff)-strlen(buff)-2,format,ap); strcat(ptr,"\r\n"); #ifdef WIN32 { |