94 lines
1.6 KiB
C
94 lines
1.6 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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/* 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(strlen(source) + 1);
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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(const 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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return memcpy(bufferclone, buffer, buffersize);
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}
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/* */
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void capwap_daemon(void) {
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int fd;
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pid_t pid;
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/* Fork off the parent process */
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pid = fork();
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if (pid < 0) {
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capwap_exit(CAPWAP_DAEMON_ERROR);
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} else if (pid > 0) {
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capwap_exit(CAPWAP_SUCCESSFUL);
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}
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/* Change the file mode mask */
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umask(0);
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/* Create a new SID for the child process */
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if (setsid() < 0) {
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capwap_exit(CAPWAP_DAEMON_ERROR);
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}
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/* Change the current working directory */
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if ((chdir("/")) < 0) {
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capwap_exit(CAPWAP_DAEMON_ERROR);
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}
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/* Redirect the standard file descriptors to /dev/null */
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fd = open("/dev/null", 0);
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if (fd == -1) {
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capwap_exit(CAPWAP_DAEMON_ERROR);
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}
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dup2(fd, STDIN_FILENO);
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dup2(fd, STDOUT_FILENO);
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dup2(fd, STDERR_FILENO);
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close(fd);
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}
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/* */
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char* capwap_itoa(int input, char* output) {
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sprintf(output, "%d", input);
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return output;
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}
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/* */
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char* capwap_ltoa(long input, char* output) {
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sprintf(output, "%ld", input);
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return output;
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}
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