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#include <time.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/talloc.h>
#include <osmocom/abis/e1_input.h>
#include "storage.h"
#include "recorder.h"
static int g_out_fd = -1;;
static uint64_t g_written_bytes;
static const char *storage_gen_filename(void)
{
static char buf[32];
time_t t;
struct tm *tmp;
t = time(NULL);
tmp = localtime(&t);
strftime(buf, sizeof(buf), "%Y%m%d%H%M%S.e1cap", tmp);
return buf;
}
static int storage_reopen_if_needed(void)
{
if (g_written_bytes / (1024*1024) >= g_recorder.max_file_size_mb) {
close(g_out_fd);
g_out_fd = -1;
}
if (g_out_fd < 0) {
int rc;
const char *fname = storage_gen_filename();
rc = chdir(g_recorder.storage_path);
if (rc < 0) {
LOGP(DMAIN, LOGL_ERROR, "Unable to chdir(%s): %s\n",
g_recorder.storage_path, strerror(errno));
return -1;
}
g_out_fd = open(fname, O_WRONLY|O_CREAT, 0664);
if (g_out_fd < 0) {
LOGP(DMAIN, LOGL_ERROR, "Unable to open(%s): %s\n",
fname, strerror(errno));
}
g_written_bytes = 0;
}
return g_out_fd;
}
int e1frame_store(struct e1inp_ts *ts, struct msgb *msg, enum osmo_e1cap_capture_mode mode)
{
struct osmo_e1cap_pkthdr _h, *h = &_h;
int rc;
struct iovec iov[2] = {
{
.iov_base = h,
.iov_len = sizeof(*h),
}, {
.iov_base = msg->data,
.iov_len = msg->len,
}
};
h->len = htonl(msg->len);
gettimeofday(&h->ts, NULL);
h->line_nr = ts->line->num;
h->ts_nr = ts->num;
h->capture_mode = mode;
h->flags = 0;
storage_reopen_if_needed();
rc = writev(g_out_fd, iov, ARRAY_SIZE(iov));
if (rc < 0)
return rc;
g_written_bytes += rc;
return 0;
}
/* reading */
struct osmo_e1cap_file {
int fd;
};
#define OSMO_E1REC_ALLOC_SIZE 1024
struct osmo_e1cap_file *osmo_e1cap_open(void *ctx, const char *path)
{
struct osmo_e1cap_file *f = talloc_zero(ctx, struct osmo_e1cap_file);
if (!f)
return NULL;
f->fd = open(path, O_RDONLY);
if (f->fd < 0) {
talloc_free(f);
return NULL;
}
return f;
}
struct osmo_e1cap_pkthdr *osmo_e1cap_read_next(struct osmo_e1cap_file *f)
{
struct osmo_e1cap_pkthdr *pkt = talloc_zero_size(f, OSMO_E1REC_ALLOC_SIZE);
int rc;
if (!pkt)
return NULL;
/* read header */
rc = read(f->fd, (uint8_t *)pkt, sizeof(*pkt));
if (rc < sizeof(*pkt)) {
talloc_free(pkt);
return NULL;
}
pkt->len = ntohl(pkt->len);
printf("len=%u\n", pkt->len);
/* read data */
if (pkt->len > OSMO_E1REC_ALLOC_SIZE - sizeof(*pkt)) {
pkt = talloc_realloc_size(f, pkt, sizeof(*pkt) + pkt->len);
if (!pkt)
return NULL;
}
rc = read(f->fd, (uint8_t*)(pkt+1), pkt->len);
if (rc < pkt->len) {
talloc_free(pkt);
return NULL;
}
return pkt;
}
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