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