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CHanged device for entropy

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Signed-off-by: tyrolyean <tyrolyean@tyrolyean.net>
This commit is contained in:
tyrolyean 2020-04-30 02:27:01 +02:00
parent a71a10a0b5
commit 67b6aa29b0
No known key found for this signature in database
GPG key ID: EDD105663B707C62
1 changed files with 6 additions and 17 deletions
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23
src/file.c
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@ -26,6 +26,7 @@
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/random.h>
/* Generate a safe directory name to store ONE emails files into. This is
* done to prevent someone from guessing the directory names. THe first part
@ -51,24 +52,12 @@ char* generate_safe_dirname(){
* to do so!
*/
int randie[3];
int random_fd = open("/dev/random", O_RDONLY);
if (random_fd < 0){
perror("Failed to open /dev/urandom");
if(getrandom(randie, sizeof(randie), 0) <= 0){
perror("Failed to get random seed! Aborting");
return NULL;
}else{
size_t randie_len = 0;
while (randie_len < sizeof(randie)){
ssize_t result = read(random_fd, randie + randie_len, sizeof(randie) - randie_len);
if (result < 0){
perror("Failed to read from /dev/urandom");
close(random_fd);
return NULL;
}
randie_len += result;
}
close(random_fd);
}
size_t dir_len = TIME_LEN + 50 + strlen(directory);
char * dir_id = malloc(dir_len+1);
memset(dir_id, 0, dir_len+1 );
@ -112,7 +101,7 @@ int base64_decode_file(const char* directory, const struct email_t* mail){
int decode_file(const char* directory, const char * message, size_t len,
struct type_file_info_t finf){
if(directory == NULL || message == NULL){
if(directory == NULL || message == NULL || finf.name == NULL){
/* I don't know how I should call that file! */
return 0;