diff options
| author | Maciej Soltysiak <solt@dns.toxicfilms.tv> | 2004-07-28 14:08:22 +0000 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2004-07-28 14:08:22 +0000 |
| commit | 46e8538e2254fcd48517067b659bcdc8ba1c3cc0 (patch) | |
| tree | 9245cbf5655f8c4090d15593e0748cabdd401f40 /extensions/libip6t_HL.c | |
| parent | 37fd00d68995779dafde80ee51eaeaaaa5c149c0 (diff) | |
Limit ttl-value to 0-255 (Maciej Soltysiak <solt@dns.toxicfilms.tv>)
Diffstat (limited to 'extensions/libip6t_HL.c')
| -rw-r--r-- | extensions/libip6t_HL.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/extensions/libip6t_HL.c b/extensions/libip6t_HL.c index 7c249152..ffe86d09 100644 --- a/extensions/libip6t_HL.c +++ b/extensions/libip6t_HL.c @@ -24,9 +24,9 @@ static void help(void) { printf( "HL target v%s options\n" -" --hl-set value Set HL to <value>\n" -" --hl-dec value Decrement HL by <value>\n" -" --hl-inc value Increment HL by <value>\n" +" --hl-set value Set HL to <value 0-255>\n" +" --hl-dec value Decrement HL by <value 1-255>\n" +" --hl-inc value Increment HL by <value 1-255>\n" , IPTABLES_VERSION); } @@ -35,7 +35,7 @@ static int parse(int c, char **argv, int invert, unsigned int *flags, struct ip6t_entry_target **target) { struct ip6t_HL_info *info = (struct ip6t_HL_info *) (*target)->data; - u_int8_t value; + unsigned int value; if (*flags & IP6T_HL_USED) { exit_error(PARAMETER_PROBLEM, @@ -50,7 +50,9 @@ static int parse(int c, char **argv, int invert, unsigned int *flags, exit_error(PARAMETER_PROBLEM, "HL: unexpected `!'"); - value = atoi(optarg); + if (string_to_number(optarg, 0, 255, &value) == -1) + exit_error(PARAMETER_PROBLEM, + "HL: Expected value between 0 and 255"); switch (c) { |