69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
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#include <stdio.h>
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#include <utmp.h>
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#include <time.h>
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main()
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{
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FILE *fp;
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struct utmp ut;
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struct tm *tm;
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char user[9];
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char host[17];
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char line[13];
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if ((fp = fopen(UTMP_FILE, "r")) == NULL)
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{
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printf("Could not open wtmp file!");
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exit(1);
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}
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/* Go to end of file minus one structure */
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fseek(fp, -1L * sizeof(struct utmp), SEEK_END);
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while (fread(&ut, sizeof(struct utmp), 1, fp) == 1)
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{
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tm = localtime(&ut.ut_time);
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/*
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if (tm->tm_year != now.tm_year || tm->tm_yday != now.tm_yday)
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break;
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*/
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printf("%02d:%02d type=", tm->tm_hour,tm->tm_min);
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switch (ut.ut_type)
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{
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#ifndef SUNOS
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case RUN_LVL: printf("RUN_LVL");
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break;
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case BOOT_TIME: printf("BOOT_TIME");
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break;
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case NEW_TIME: printf("NEW_TIME");
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break;
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case OLD_TIME: printf("OLD_TIME");
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break;
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case INIT_PROCESS: printf("INIT_PROCESS");
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break;
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case LOGIN_PROCESS: printf("LOGIN_PROCESS");
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break;
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case USER_PROCESS: printf("USER_PROCESS");
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break;
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case DEAD_PROCESS: printf("DEAD_PROCESS");
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break;
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#endif
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default: printf("UNKNOWN!(type=%d)", ut.ut_type);
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}
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strncpy(user, ut.ut_user, 8);
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user[8] = 0;
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strncpy(host, ut.ut_host, 16);
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host[16] = 0;
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strncpy(line, ut.ut_line, 12);
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line[12] = 0;
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printf(" line=%s host=%s user=%s\n", line, host, user);
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/* Position the file pointer 2 structures back */
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if (fseek(fp, -2 * sizeof(struct utmp), SEEK_CUR) < 0) break;
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}
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fclose(fp);
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}
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