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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#include <errno.h>
#include "common/errno.h"
#include "rgw_tools.h"
#define dout_subsys ceph_subsys_rgw
#define dout_context g_ceph_context
#define READ_CHUNK_LEN (512 * 1024)
using namespace std;
static std::map<std::string, std::string>* ext_mime_map;
void parse_mime_map_line(const char *start, const char *end)
{
char line[end - start + 1];
strncpy(line, start, end - start);
line[end - start] = '\0';
char *l = line;
#define DELIMS " \t\n\r"
while (isspace(*l))
l++;
char *mime = strsep(&l, DELIMS);
if (!mime)
return;
char *ext;
do {
ext = strsep(&l, DELIMS);
if (ext && *ext) {
(*ext_mime_map)[ext] = mime;
}
} while (ext);
}
void parse_mime_map(const char *buf)
{
const char *start = buf, *end = buf;
while (*end) {
while (*end && *end != '\n') {
end++;
}
parse_mime_map_line(start, end);
end++;
start = end;
}
}
static int ext_mime_map_init(const DoutPrefixProvider *dpp, CephContext *cct, const char *ext_map)
{
int fd = open(ext_map, O_RDONLY);
char *buf = NULL;
int ret;
if (fd < 0) {
ret = -errno;
ldpp_dout(dpp, 0) << __func__ << " failed to open file=" << ext_map
<< " : " << cpp_strerror(-ret) << dendl;
return ret;
}
struct stat st;
ret = fstat(fd, &st);
if (ret < 0) {
ret = -errno;
ldpp_dout(dpp, 0) << __func__ << " failed to stat file=" << ext_map
<< " : " << cpp_strerror(-ret) << dendl;
goto done;
}
buf = (char *)malloc(st.st_size + 1);
if (!buf) {
ret = -ENOMEM;
ldpp_dout(dpp, 0) << __func__ << " failed to allocate buf" << dendl;
goto done;
}
ret = safe_read(fd, buf, st.st_size + 1);
if (ret != st.st_size) {
// huh? file size has changed?
ldpp_dout(dpp, 0) << __func__ << " raced! will retry.." << dendl;
free(buf);
close(fd);
return ext_mime_map_init(dpp, cct, ext_map);
}
buf[st.st_size] = '\0';
parse_mime_map(buf);
ret = 0;
done:
free(buf);
close(fd);
return ret;
}
const char *rgw_find_mime_by_ext(string& ext)
{
map<string, string>::iterator iter = ext_mime_map->find(ext);
if (iter == ext_mime_map->end())
return NULL;
return iter->second.c_str();
}
int rgw_tools_init(const DoutPrefixProvider *dpp, CephContext *cct)
{
ext_mime_map = new std::map<std::string, std::string>;
ext_mime_map_init(dpp, cct, cct->_conf->rgw_mime_types_file.c_str());
// ignore errors; missing mime.types is not fatal
return 0;
}
void rgw_tools_cleanup()
{
delete ext_mime_map;
ext_mime_map = nullptr;
}
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