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/* This file is part of "reprepro"
* Copyright (C) 2012 Bernhard R. Link
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include <config.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "error.h"
#include "filecntl.h"
#include "mprintf.h"
#include "strlist.h"
#include "dirs.h"
#include "hooks.h"
#include "outhook.h"
static FILE *outlogfile = NULL;
static char *outlogfilename = NULL;
static bool outlognonempty = false;
retvalue outhook_start(void) {
retvalue r;
int fd;
char *template;
assert (outlogfilename == NULL);
assert (outlogfile == NULL);
r = dirs_create(global.logdir);
if (RET_WAS_ERROR(r))
return r;
template = mprintf("%s/%010llu-XXXXXX.outlog",
global.logdir, (unsigned long long)time(NULL));
if (FAILEDTOALLOC(template))
return RET_ERROR_OOM;
fd = mkstemps(template, 7);
if (fd < 0) {
int e = errno;
fprintf(stderr, "Error %d creating new file in %s: %s\n",
e, global.logdir, strerror(e));
free(template);
return RET_ERRNO(e);
}
outlogfile = fdopen(fd, "w");
if (outlogfile == NULL) {
int e = errno;
(void)close(fd);
fprintf(stderr, "Error %d from fdopen: %s\n",
e, strerror(e));
free(template);
return RET_ERRNO(e);
}
outlogfilename = template;
return RET_OK;
}
void outhook_send(const char *command, const char *arg1, const char *arg2, const char *arg3) {
assert (command != NULL);
assert (arg1 != NULL);
assert (arg3 == NULL || arg2 != NULL);
if (outlogfile == NULL)
return;
if (arg2 == NULL)
fprintf(outlogfile, "%s\t%s\n", command, arg1);
else if (arg3 == NULL)
fprintf(outlogfile, "%s\t%s\t%s\n", command, arg1, arg2);
else
fprintf(outlogfile, "%s\t%s\t%s\t%s\n", command,
arg1, arg2, arg3);
outlognonempty = true;
}
void outhook_sendpool(component_t component, const char *sourcename, const char *name) {
assert (name != NULL);
if (outlogfile == NULL)
return;
if (sourcename == NULL || *sourcename == '\0')
fprintf(outlogfile, "POOLNEW\t%s\n", name);
else if (sourcename[0] == 'l' && sourcename[1] == 'i' &&
sourcename[2] == 'b' && sourcename[3] != '\0')
fprintf(outlogfile, "POOLNEW\tpool/%s/lib%c/%s/%s\n",
atoms_components[component],
sourcename[3], sourcename, name);
else
fprintf(outlogfile, "POOLNEW\tpool/%s/%c/%s/%s\n",
atoms_components[component],
sourcename[0], sourcename, name);
outlognonempty = true;
}
static retvalue callouthook(const char *scriptname, const char *logfilename) {
pid_t child;
child = fork();
if (child == 0) {
/* Try to close all open fd but 0,1,2 */
closefrom(3);
sethookenvironment(causingfile, NULL, NULL, NULL);
(void)execl(scriptname, scriptname, logfilename, (char*)NULL);
{
int e = errno;
fprintf(stderr, "Error %d executing '%s': %s\n",
e, scriptname, strerror(e));
}
_exit(255);
}
if (child < 0) {
int e = errno;
fprintf(stderr, "Error %d forking: %s!\n", e, strerror(e));
return RET_ERRNO(e);
}
while (true) {
int status;
pid_t pid;
pid = waitpid(child, &status, 0);
if (pid == child) {
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) == 0) {
return RET_OK;
}
fprintf(stderr,
"Outhook '%s' '%s' failed with exit code %d!\n",
scriptname, logfilename,
(int)(WEXITSTATUS(status)));
} else if (WIFSIGNALED(status)) {
fprintf(stderr,
"Outhook '%s' '%s' killed by signal %d!\n",
scriptname, logfilename,
(int)(WTERMSIG(status)));
} else {
fprintf(stderr,
"Outhook '%s' '%s' failed!\n",
scriptname, logfilename);
}
return RET_ERROR;
} else if (pid == (pid_t)-1) {
int e = errno;
if (e == EINTR)
continue;
fprintf(stderr,
"Error %d calling waitpid on outhook child: %s\n",
e, strerror(e));
return RET_ERRNO(e);
}
}
/* NOT REACHED */
}
retvalue outhook_call(const char *scriptname) {
retvalue result;
assert (outlogfile != NULL);
assert (outlogfilename != NULL);
if (ferror(outlogfile) != 0) {
(void)fclose(outlogfile);
fprintf(stderr, "Errors creating '%s'!\n",
outlogfilename);
result = RET_ERROR;
} else if (fclose(outlogfile) != 0) {
fprintf(stderr, "Errors creating '%s'!\n",
outlogfilename);
result = RET_ERROR;
} else if (!outlognonempty) {
unlink(outlogfilename);
result = RET_OK;
} else {
result = callouthook(scriptname, outlogfilename);
}
outlogfile = NULL;
free(outlogfilename);
outlogfilename = NULL;
return result;
}
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