tmp.c

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#include "config.h"
#include <errno.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "tmp.h"
#include "globals.h"
#include "neomutt.h"

void buf_mktemp_full(struct Buffer *buf, const char *prefix, const char *suffix,
                     const char *src, int line, const char *cfg)
{
  const char *const c_tmp_dir = cs_subset_path(NeoMutt->sub, cfg);
  buf_printf(buf, "%s/%s-%s-%d-%d-%" PRIu64 "%s%s", NONULL(c_tmp_dir),
             NONULL(prefix), NONULL(ShortHostname), (int) getuid(),
             (int) getpid(), mutt_rand64(), suffix ? "." : "", NONULL(suffix));
 
  mutt_debug(LL_DEBUG3, "%s:%d: buf_mktemp returns \"%s\"\n", src, line, buf_string(buf));
  if (unlink(buf_string(buf)) && (errno != ENOENT))
  {
    mutt_debug(LL_DEBUG1, "%s:%d: ERROR: unlink(\"%s\"): %s (errno %d)\n", src,
               line, buf_string(buf), strerror(errno), errno);
  }
}

FILE *mutt_file_mkstemp_full(const char *file, int line, const char *func)
{
  char name[PATH_MAX] = { 0 };
 
  const char *const c_tmp_dir = cs_subset_path(NeoMutt->sub, "tmp_dir");
  int n = snprintf(name, sizeof(name), "%s/neomutt-XXXXXX", NONULL(c_tmp_dir));
  if ((n < 0) || ((size_t) n >= sizeof(name)))
    return NULL;
 
  int fd = mkstemp(name);
  if (fd == -1)
    return NULL;
 
  FILE *fp = fdopen(fd, "w+");
  if (!fp)
  {
    close(fd);
    return NULL;
  }
 
  if ((unlink(name) != 0) && (errno != ENOENT))
  {
    mutt_file_fclose(&fp);
    return NULL;
  }
 
  MuttLogger(0, file, line, func, 1, "created temp file '%s'\n", name);
  return fp;
}