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supersmått

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This commit is contained in:
parken 2022-01-31 19:28:45 +01:00
parent 51880f5428
commit e88465c2c9
1 changed files with 9 additions and 6 deletions
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15
lab1/login_linux.c
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@ -122,7 +122,8 @@ int main(int argc, char *argv[]) {
/* Restore terminal */ /* Restore terminal */
if (tcsetattr(fileno(stdin), TCSAFLUSH, &old_term_flags) != 0) { if (tcsetattr(fileno(stdin), TCSAFLUSH, &old_term_flags) != 0) {
perror("Error");exit(EXIT_FAILURE); perror("Error");
exit(EXIT_FAILURE);
} }
if (!okpassword || !okusername){ if (!okpassword || !okusername){
@ -133,7 +134,7 @@ int main(int argc, char *argv[]) {
////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////
//get user info from passdb // get user info from passdb
passwddata = mygetpwnam(user); passwddata = mygetpwnam(user);
if (passwddata != NULL) { if (passwddata != NULL) {
@ -160,19 +161,20 @@ int main(int argc, char *argv[]) {
} }
if (passwddata->pwage > 10) { if (passwddata->pwage > 10) {
printf("You need to change your password !\n"); printf("You need to change your password !\n");
// TODO
} }
/* check UID, see setuid(2) */ /* check UID, see setuid(2) */
if (setuid(passwddata->uid) < 0) { if (setuid(passwddata->uid) < 0) {
perror("Error");exit(EXIT_FAILURE); perror("Error");
exit(EXIT_FAILURE);
// TODO kommer alltid bara hit // TODO kommer alltid bara hit
} }
/* start a shell, use execve(2) */ /* start a shell, use execve(2) */
if (execve("/bin/bash",NULL,NULL) < 0) { if (execve("/bin/bash",NULL,NULL) < 0) {
perror("Error");exit(EXIT_FAILURE); perror("Error");
exit(EXIT_FAILURE);
} }
printf("\nWelcome to this system !\n"); printf("\nWelcome to this system !\n");
} }
@ -180,7 +182,8 @@ int main(int argc, char *argv[]) {
// user name exists but password does not match // user name exists but password does not match
passwddata->pwfailed = passwddata->pwfailed + 1; passwddata->pwfailed = passwddata->pwfailed + 1;
if (mysetpwent(user, passwddata) < 0) { if (mysetpwent(user, passwddata) < 0) {
perror("Error");exit(EXIT_FAILURE); perror("Error");
exit(EXIT_FAILURE);
} }
} }
} }