h2o_access_log_filehandle_t *h2o_access_log_open_handle(const char *path, const char *fmt)
{
struct log_element_t *elements;
size_t num_elements;
int fd;
h2o_access_log_filehandle_t *fh;
/* default to combined log format */
if (fmt == NULL)
fmt = "%h %l %u %t \"%r\" %s %b \"%{Referer}i\" \"%{User-agent}i\"";
if ((elements = compile_log_format(fmt, &num_elements)) == NULL)
return NULL;
/* open log file */
if ((fd = h2o_access_log_open_log(path)) == -1)
return NULL;
fh = h2o_mem_alloc_shared(NULL, sizeof(*fh), on_dispose_handle);
fh->elements = elements;
fh->num_elements = num_elements;
fh->fd = fd;
return fh;
}
int h2o_access_log_open_log(const char *path)
{
int fd;
if (path[0] == '|') {
int pipefds[2];
pid_t pid;
char *argv[4] = {"/bin/sh", "-c", (char *)(path + 1), NULL};
/* create pipe */
#ifndef _MSC_VER
if (pipe(pipefds) != 0) {
perror("pipe failed");
return -1;
}
#else
if (_pipe(pipefds,4096,O_BINARY) == -1) {
perror("pipe failed");
return -1;
}
#endif
#ifndef _MSC_VER
if (fcntl(pipefds[1], F_SETFD, FD_CLOEXEC) == -1) {
perror("failed to set FD_CLOEXEC on pipefds[1]");
return -1;
}
#endif
/* spawn the logger */
int mapped_fds[] = {pipefds[0], 0, /* map pipefds[0] to stdin */
-1};
if ((pid = h2o_spawnp(argv[0], argv, mapped_fds, 0)) == -1) {
fprintf(stderr, "failed to open logger: %s:%s\n", path + 1, strerror(errno));
return -1;
}
/* close the read side of the pipefds and return the write side */
close(pipefds[0]);
fd = pipefds[1];
} else {
#ifndef _MSC_VER
if ((fd = open(path, O_CREAT | O_WRONLY | O_APPEND | O_CLOEXEC, 0644)) == -1) {
//(owning) User: read & write
//*Group: read
//* Other : read
#else
if ((fd = _open(path, O_CREAT | O_WRONLY | O_APPEND, _O_RDWR)) == -1) {
#endif
fprintf(stderr, "failed to open log file:%s:%s\n", path, strerror(errno));
return -1;
}
}
return fd;
}
h2o_access_log_filehandle_t *h2o_access_log_open_handle(const char *path, const char *fmt)
{
h2o_logconf_t *logconf;
int fd;
h2o_access_log_filehandle_t *fh;
char errbuf[256];
/* default to combined log format */
if (fmt == NULL)
fmt = "%h %l %u %t \"%r\" %s %b \"%{Referer}i\" \"%{User-agent}i\"";
if ((logconf = h2o_logconf_compile(fmt, H2O_LOGCONF_ESCAPE_APACHE, errbuf)) == NULL) {
fprintf(stderr, "%s\n", errbuf);
return NULL;
}
/* open log file */
if ((fd = h2o_access_log_open_log(path)) == -1) {
h2o_logconf_dispose(logconf);
return NULL;
}
fh = h2o_mem_alloc_shared(NULL, sizeof(*fh), on_dispose_handle);
fh->logconf = logconf;
fh->fd = fd;
return fh;
}