int
run_shell_command( char *command, char *input,
char *output, int *out_len) /* Or realloc style ? */
{
#if HAVE_SYSTEM
int result; /* and the return value of the command */
if (!command)
return -1;
DEBUGMSGTL(("run_shell_command", "running %s\n", command));
DEBUGMSGTL(("run:shell", "running '%s'\n", command));
result = -1;
/*
* Set up the command and run it.
*/
if (input) {
FILE *file;
if (output) {
const char *ifname;
const char *ofname; /* Filename for output redirection */
char shellline[STRMAX]; /* The full command to run */
ifname = netsnmp_mktemp();
if(NULL == ifname)
return -1;
file = fopen(ifname, "w");
if(NULL == file) {
snmp_log(LOG_ERR,"couldn't open temporary file %s\n", ifname);
unlink(ifname);
return -1;
}
fprintf(file, "%s", input);
fclose( file );
ofname = netsnmp_mktemp();
if(NULL == ofname) {
if(ifname)
unlink(ifname);
return -1;
}
snprintf( shellline, sizeof(shellline), "(%s) < \"%s\" > \"%s\"",
command, ifname, ofname );
result = system(shellline);
/*
* If output was requested, then retrieve & return it.
* Tidy up, and return the result of the command.
*/
if (out_len && *out_len != 0) {
int fd; /* For processing any output */
int len = 0;
fd = open(ofname, O_RDONLY);
if(fd >= 0)
len = read( fd, output, *out_len-1 );
*out_len = len;
if (len >= 0) output[len] = 0;
else output[0] = 0;
if (fd >= 0) close(fd);
}
unlink(ofname);
unlink(ifname);
} else {
file = popen(command, "w");
if (file) {
fwrite(input, 1, strlen(input), file);
result = pclose(file);
}
}
} else {
if (output) {
FILE* file;
file = popen(command, "r");
if (file) {
*out_len = fread(output, 1, *out_len - 1, file);
if (*out_len >= 0)
output[*out_len] = 0;
else
output[0] = 0;
result = pclose(file);
}
} else
result = system(command);
}
return result;
#else
return -1;
#endif
}
/** deprecated, use netsnmp_mktemp instead */
const char *make_tempfile (void)
{
return netsnmp_mktemp ();
}
