/*
*
* loginject.c - System Log Injector
* By: Tal0n 06-22-04
*
* Features:
* 	   Inject a message into any common priority/facility
*	   Spoofing of argv[0] to not show name of program in log file
*	   Fast, uses very low cpu, and can be used as root or as normal user
*
*/

#include <stdio.h>
#include <string.h>
#include <syslog.h>

int main(int argc, char *argv[])
{

if(argc == 1)
{

printf("\nLogInject, by Tal0n 06-22-04\n");
printf("\nUsage: %s <level> <\"message\">", argv[0]);
printf("\nType \"%s levels\" for list of log levels\n\n", argv[0]);

return 0;
}

if(strcmp(argv[1], "levels") == 0)
{

printf("\nLogInject, by Tal0n 06-22-04\n");
printf("\nPriorities:");

printf("\n\t\tp0 - LOG_EMERG");
printf("\n\t\tp1 - LOG_ALERT");
printf("\n\t\tp2 - LOG_CRIT");
printf("\n\t\tp3 - LOG_ERR");
printf("\n\t\tp4 - LOG_WARNING");
printf("\n\t\tp5 - LOG_NOTICE");
printf("\n\t\tp6 - LOG_INFO");
printf("\n\t\tp7 - LOG_DEBUG");

printf("\n");
printf("\nFacilities:");

printf("\n\t\tf0 - LOG_KERN");
printf("\n\t\tf1 - LOG_USER");
printf("\n\t\tf2 - LOG_MAIL");
printf("\n\t\tf3 - LOG_DAEMON");
printf("\n\t\tf4 - LOG_AUTH");
printf("\n\t\tf5 - LOG_SYSLOG");
printf("\n\t\tf6 - LOG_LPR");
printf("\n\t\tf7 - LOG_NEWS");
printf("\n\t\tf8 - LOG_UUCP");
printf("\n\t\tf9 - LOG_CRON");
printf("\n\t\tf10 - LOG_AUTHPRIV");
printf("\n\t\tf11 - LOG_FTP");

printf("\n\n");

return 0;
}

strcpy(argv[0], "??");

printf("\nLogInject, by Tal0n 06-22-04\n");
printf("\nInjecting message into system log(s)...\n");

if(strcmp(argv[1], "p0") == 0)
{

syslog(LOG_EMERG, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p1") == 0)
{

syslog(LOG_ALERT, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p2") == 0)
{

syslog(LOG_CRIT, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p3") == 0)
{

syslog(LOG_ERR, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p4") == 0)
{

syslog(LOG_WARNING, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p5") == 0)
{

syslog(LOG_NOTICE, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p6") == 0)
{

syslog(LOG_INFO, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "p7") == 0)
{

syslog(LOG_DEBUG, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f0") == 0)
{

syslog(LOG_KERN, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f1") == 0)
{

syslog(LOG_USER, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f2") == 0)
{

syslog(LOG_MAIL, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f3") == 0)
{

syslog(LOG_DAEMON, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f4") == 0)
{

syslog(LOG_AUTH, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f5") == 0)
{

syslog(LOG_SYSLOG, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f6") == 0)
{

syslog(LOG_LPR, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f7") == 0)
{

syslog(LOG_NEWS, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f8") == 0)
{

syslog(LOG_UUCP, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f9") == 0)
{

syslog(LOG_CRON, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f10") == 0)
{

syslog(LOG_AUTHPRIV, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

if(strcmp(argv[1], "f11") == 0)
{

syslog(LOG_FTP, "%s", argv[2]);

printf("\nDone.\n\n");

return 0;
}

return 0;
}

LogInject is a good tool to inject system log messages into log files.

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