152 lines
3.4 KiB
C
152 lines
3.4 KiB
C
#include "capwap.h"
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/* Helper exit */
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void capwap_exit(int errorcode) {
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exit(errorcode);
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}
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/* Helper timeout calc */
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void capwap_init_timeout(struct timeout_control* timeout) {
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ASSERT(timeout);
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memset(timeout, 0, sizeof(struct timeout_control));
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}
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void capwap_update_timeout(struct timeout_control* timeout) {
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int i;
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struct timeval now;
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ASSERT(timeout);
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gettimeofday(&now, NULL);
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for (i = 0; i < CAPWAP_MAX_TIMER; i++) {
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if (timeout->items[i].enable && (timeout->items[i].delta >= 0)) {
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timeout->items[i].delta = (timeout->items[i].timestop.tv_sec - now.tv_sec) * 1000 + (timeout->items[i].timestop.tv_usec - now.tv_usec) / 1000;
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if (timeout->items[i].delta < 0) {
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timeout->items[i].delta = 0;
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} else if (timeout->items[i].delta > timeout->items[i].durate) {
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/* Changed system time */
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timeout->items[i].delta = timeout->items[i].durate;
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memcpy(&timeout->items[i].timestop, &now, sizeof(struct timeval));
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timeout->items[i].timestop.tv_sec += timeout->items[i].durate;
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}
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}
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}
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}
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long capwap_get_timeout(struct timeout_control* timeout, long* index) {
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long i;
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long delta = 0;
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ASSERT(timeout != NULL);
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ASSERT(index != NULL);
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*index = CAPWAP_TIMER_UNDEF;
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for (i = 0; i < CAPWAP_MAX_TIMER; i++) {
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if (timeout->items[i].enable) {
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if (timeout->items[i].delta <= 0) {
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*index = i;
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delta = 0;
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break;
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} else if (!delta || (delta > timeout->items[i].delta)) {
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*index = i;
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delta = timeout->items[i].delta;
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}
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}
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}
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return delta;
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}
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int capwap_is_enable_timeout(struct timeout_control* timeout, unsigned long index) {
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ASSERT(timeout != NULL);
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ASSERT(index < CAPWAP_MAX_TIMER);
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return (timeout->items[index].enable ? 1 : 0);
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}
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int capwap_is_timeout(struct timeout_control* timeout, unsigned long index) {
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ASSERT(timeout != NULL);
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ASSERT(index < CAPWAP_MAX_TIMER);
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if (timeout->items[index].enable && (timeout->items[index].delta <= 0)) {
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return 1;
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}
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return 0;
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}
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void capwap_set_timeout(unsigned long value, struct timeout_control* timeout, unsigned long index) {
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ASSERT(timeout != NULL);
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ASSERT(index < CAPWAP_MAX_TIMER);
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/* Set timeout in ms */
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timeout->items[index].enable = 1;
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timeout->items[index].delta = value * 1000;
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timeout->items[index].durate = value * 1000;
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gettimeofday(&timeout->items[index].timestop, NULL);
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timeout->items[index].timestop.tv_sec += value;
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}
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void capwap_kill_timeout(struct timeout_control* timeout, unsigned long index) {
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ASSERT(timeout != NULL);
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ASSERT(index < CAPWAP_MAX_TIMER);
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timeout->items[index].enable = 0;
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}
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void capwap_killall_timeout(struct timeout_control* timeout) {
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long i;
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ASSERT(timeout != NULL);
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for (i = 0; i < CAPWAP_MAX_TIMER; i++) {
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timeout->items[i].enable = 0;
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}
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}
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/* Init randon generator */
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void capwap_init_rand(void) {
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srand(time(NULL));
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}
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/* Get random number */
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int capwap_get_rand(int max) {
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if ((max < 0) || (max > RAND_MAX)) {
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max = RAND_MAX;
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}
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return (rand() % max);
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}
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/* Duplicate string */
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char* capwap_duplicate_string(const char* source) {
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char* clone;
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ASSERT(source != NULL);
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clone = capwap_alloc(sizeof(char) * (strlen(source) + 1));
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if (!clone) {
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capwap_outofmemory();
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}
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strcpy(clone, source);
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return clone;
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}
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/* Buffer clone */
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void* capwap_clone(void* buffer, int buffersize) {
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void* bufferclone;
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ASSERT(buffer != NULL);
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ASSERT(buffersize > 0);
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bufferclone = capwap_alloc(buffersize);
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if (!bufferclone) {
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capwap_outofmemory();
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}
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return memcpy(bufferclone, buffer, buffersize);
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}
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