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/*
Task Spooler - a task queue system for the unix user
Copyright (C) 2007-2009 Lluís Batlle i Rossell
Please find the license in the provided COPYING file.
*/
#include <signal.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/time.h> /* Needed for any main.h inclusion */
#include "main.h"
/* Returns the write pipe */
static int run_sendmail(const char *dest)
{
int pid;
int p[2];
pipe(p);
pid = fork();
switch(pid)
{
case 0: /* Child */
restore_sigmask();
close(0);
close(1);
close(2);
close(p[1]);
dup2(p[0], 0);
execl("/usr/sbin/sendmail", "sendmail", "-oi", dest, NULL);
error("run sendmail");
case -1:
error("fork sendmail");
default: /* Parent */
close(p[0]);
}
return p[1];
}
static void write_header(int fd, const char *dest, const char * command,
int jobid, int errorlevel)
{
fd_nprintf(fd, 100, "From: Task Spooler <taskspooler>\n");
fd_nprintf(fd, 500, "To: %s\n", dest);
fd_nprintf(fd, 500, "Subject: the task %i finished with error %i. \n", jobid,
errorlevel);
fd_nprintf(fd, 500, "\nCommand: %s\n", command);
fd_nprintf(fd, 500, "Output:\n");
}
static void copy_output(int write_fd, const char *ofname)
{
int file_fd;
char buffer[1000];
int read_bytes;
int res;
file_fd = open(ofname, O_RDONLY);
if (file_fd == -1)
error("mail: Cannot open the output file %s", ofname);
do {
read_bytes = read(file_fd, buffer, 1000);
if (read_bytes > 0)
{
res = write(write_fd, buffer, read_bytes);
if (res == -1)
warning("Cannot write to the mail pipe %i", write_fd);
}
} while (read_bytes > 0);
if (read_bytes == -1)
warning("Cannot read the output file %s from %i", ofname, file_fd);
}
void hook_on_finish(int jobid, int errorlevel, const char *ofname,
const char *command)
{
char *onfinish;
int pid;
char sjobid[20];
char serrorlevel[20];
int status;
onfinish = getenv("TS_ONFINISH");
if (onfinish == NULL)
return;
pid = fork();
switch(pid)
{
case 0: /* Child */
restore_sigmask();
sprintf(sjobid, "%i", jobid);
sprintf(serrorlevel, "%i", errorlevel);
execlp(onfinish, onfinish, sjobid, serrorlevel, ofname, command,
NULL);
case -1:
error("fork on finish");
default: /* Parent */
wait(&status);
}
}
void send_mail(int jobid, int errorlevel, const char *ofname,
const char *command)
{
char to[101];
char *user;
char *env_to;
int write_fd;
int status;
env_to = getenv("TS_MAILTO");
if (env_to == NULL || strlen(env_to) > 100)
{
user = getenv("USER");
if (user == NULL)
user = "nobody";
strcpy(to, user);
/*strcat(to, "@localhost");*/
} else
strcpy(to, env_to);
write_fd = run_sendmail(to);
write_header(write_fd, to, command, jobid, errorlevel);
copy_output(write_fd, ofname);
close(write_fd);
wait(&status);
}
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