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nettools: reimport nettools' n-dhcp4

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git subtree pull --prefix shared/n-dhcp4/ git@github.com:nettools/n-dhcp4.git master --squash
This commit is contained in:
Thomas Haller 2020-07-07 11:15:24 +02:00
parent b9e458b184 082aab5452
commit 4c52c69d66
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GPG key ID: 29C2366E4DFC5728
2 changed files with 4 additions and 12 deletions
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14
shared/n-dhcp4/src/n-dhcp4-c-probe.c
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@ -316,10 +316,9 @@ static void n_dhcp4_client_probe_config_initialize_random_seed(NDhcp4ClientProbe
unsigned short int seed16v[3];
const uint8_t *p;
uint64_t u64;
int r;
/*
* Initialize seed48_r(3)
* Initialize config's entropy buffer for successive jrand48(3) calls.
*
* We need random jitter for all timeouts and delays, used to reduce
* network traffic during bursts. This is not meant as security measure
@ -360,8 +359,7 @@ static void n_dhcp4_client_probe_config_initialize_random_seed(NDhcp4ClientProbe
seed16v[1] = (u64 >> 16) ^ (u64 >> 0);
seed16v[2] = (u64 >> 32) ^ (u64 >> 16);
r = seed48_r(seed16v, &config->entropy);
c_assert(!r);
memcpy(config->entropy, seed16v, sizeof(seed16v));
}
/**
@ -374,13 +372,7 @@ static void n_dhcp4_client_probe_config_initialize_random_seed(NDhcp4ClientProbe
* Return: the random data.
*/
uint32_t n_dhcp4_client_probe_config_get_random(NDhcp4ClientProbeConfig *config) {
long int result;
int r;
r = mrand48_r(&config->entropy, &result);
c_assert(!r);
return result;
return jrand48(config->entropy);
};
/**

2
shared/n-dhcp4/src/n-dhcp4-private.h
View file

@ -263,7 +263,7 @@ struct NDhcp4ClientProbeConfig {
bool inform_only;
bool init_reboot;
struct in_addr requested_ip;
struct drand48_data entropy; /* entropy pool */
unsigned short int entropy[3];
uint64_t ms_start_delay; /* max ms to wait before starting probe */
NDhcp4ClientProbeOption *options[UINT8_MAX + 1];
int8_t request_parameters[UINT8_MAX + 1];