/**
* exec_command
* Execute 'command' with 'arg' as its argument.
* if !arg command is started with no arguments
* Before we call execl we need to close all the file handles
* that the fork inherited from the parent in order not to pass
* the open handles on to the shell
*/
static void exec_command(struct context *cnt, char *command, char *filename, int filetype)
{
char stamp[PATH_MAX];
mystrftime(cnt, stamp, sizeof(stamp), command, &cnt->current_image->timestamp_tm, filename, filetype, 0);
if (!fork()) {
int i;
/* Detach from parent */
setsid();
/*
* Close any file descriptor except console because we will
* like to see error messages
*/
for (i = getdtablesize(); i > 2; --i)
close(i);
execl("/bin/sh", "sh", "-c", stamp, " &", NULL);
/* if above function succeeds the program never reach here */
MOTION_LOG(ALR, TYPE_EVENTS, SHOW_ERRNO, "%s: Unable to start external command '%s'",
stamp);
exit(1);
}
MOTION_LOG(DBG, TYPE_EVENTS, NO_ERRNO, "%s: Executing external command '%s'",
stamp);
}
/* save preview_shot */
void preview_save(struct context *cnt)
{
#ifdef HAVE_FFMPEG
int use_jpegpath;
int basename_len;
#endif /* HAVE_FFMPEG */
const char *jpegpath;
char previewname[PATH_MAX];
char filename[PATH_MAX];
struct image_data *saved_current_image;
if (cnt->imgs.preview_image.diffs) {
/* Save current global context */
saved_current_image = cnt->current_image;
/* Set global context to the image we are processing */
cnt->current_image = &cnt->imgs.preview_image;
#ifdef HAVE_FFMPEG
/* Use filename of movie i.o. jpeg_filename when set to 'preview' */
use_jpegpath = strcmp(cnt->conf.jpegpath, "preview");
if (cnt->ffmpeg_new && !use_jpegpath) {
/* Replace avi/mpg with jpg/ppm and keep the rest of the filename */
basename_len = strlen(cnt->newfilename) - 3;
strncpy(previewname, cnt->newfilename, basename_len);
previewname[basename_len] = '\0';
strcat(previewname, imageext(cnt));
put_picture(cnt, previewname, cnt->imgs.preview_image.image , FTYPE_IMAGE);
} else
#endif /* HAVE_FFMPEG */
{
/* Save best preview-shot also when no movies are recorded or jpegpath
* is used. Filename has to be generated - nothing available to reuse! */
//printf("preview_shot: different filename or picture only!\n");
/* conf.jpegpath would normally be defined but if someone deleted it by control interface
* it is better to revert to the default than fail */
if (cnt->conf.jpegpath)
jpegpath = cnt->conf.jpegpath;
else
jpegpath = (char *)DEF_JPEGPATH;
mystrftime(cnt, filename, sizeof(filename), jpegpath, &cnt->imgs.preview_image.timestamp_tm, NULL, 0);
snprintf(previewname, PATH_MAX, "%s/%s.%s", cnt->conf.filepath, filename, imageext(cnt));
put_picture(cnt, previewname, cnt->imgs.preview_image.image, FTYPE_IMAGE);
}
/* restore global context values */
cnt->current_image = saved_current_image;
}
}
