Tibor Nagy
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "test_helpers.h"
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void print(struct passwd *pwd) {
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printf("pw_name: %s\n", pwd->pw_name);
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printf("pw_password: %s\n", pwd->pw_passwd);
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printf("pw_uid: %u\n", pwd->pw_uid);
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printf("pw_gid: %u\n", pwd->pw_gid);
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printf("pw_gecos: %s\n", pwd->pw_gecos);
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printf("pw_dir: %s\n", pwd->pw_dir);
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printf("pw_shell: %s\n", pwd->pw_shell);
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}
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int main(void) {
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puts("--- Checking getpwuid ---");
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errno = 0;
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struct passwd *pwd = getpwuid(0);
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if (errno != 0) {
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perror("getpwuid");
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exit(EXIT_FAILURE);
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}
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if (pwd != NULL) {
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print(pwd);
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}
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puts("--- Checking getpwnam ---");
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errno = 0;
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pwd = getpwnam("nobody");
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if (errno != 0) {
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perror("getpwnam");
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exit(EXIT_FAILURE);
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}
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if (pwd != NULL) {
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print(pwd);
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}
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puts("--- Checking getpwuid_r ---");
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struct passwd pwd2;
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struct passwd* result;
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char* buf = malloc(100);
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if (getpwuid_r(0, &pwd2, buf, 100, &result) < 0) {
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perror("getpwuid_r");
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free(buf);
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exit(EXIT_FAILURE);
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}
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if (result != NULL) {
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if (result != &pwd2) {
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free(buf);
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exit(EXIT_FAILURE);
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}
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print(&pwd2);
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}
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puts("--- Checking getpwnam_r ---");
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if (getpwnam_r("nobody", &pwd2, buf, 100, &result) < 0) {
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perror("getpwuid_r");
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free(buf);
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exit(EXIT_FAILURE);
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}
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if (result != NULL) {
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if (result != &pwd2) {
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free(buf);
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exit(EXIT_FAILURE);
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}
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print(&pwd2);
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}
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free(buf);
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puts("--- Checking getpwuid_r error handling ---");
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char buf2[1];
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if (getpwuid_r(0, &pwd2, buf2, 1, &result) == 0) {
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puts("This shouldn't have succeeded, but did!");
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exit(EXIT_FAILURE);
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}
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if (errno != ERANGE) {
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perror("getpwuid_r");
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exit(EXIT_FAILURE);
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}
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puts("Returned ERANGE because the buffer was too small 👍");
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}
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