filestr.c
上传用户:ig0539
上传日期:2022-05-21
资源大小:181k
文件大小:1k
- /*
- * Part of Very Secure FTPd
- * Licence: GPL v2
- * Author: Chris Evans
- * filestr.c
- *
- * This file contains extensions to the string/buffer API, to load a file
- * into a buffer.
- */
- #include "filestr.h"
- /* Get access to "private" functions */
- #define VSFTP_STRING_HELPER
- #include "str.h"
- #include "sysutil.h"
- #include "secbuf.h"
- #include "utility.h"
- int
- str_fileread(struct mystr* p_str, const char* p_filename, unsigned int maxsize)
- {
- int fd;
- int retval = 0;
- filesize_t size;
- char* p_sec_buf = 0;
- struct vsf_sysutil_statbuf* p_stat = 0;
- /* In case we fail, make sure we return an empty string */
- str_empty(p_str);
- fd = vsf_sysutil_open_file(p_filename, kVSFSysUtilOpenReadOnly);
- if (vsf_sysutil_retval_is_error(fd))
- {
- return fd;
- }
- vsf_sysutil_fstat(fd, &p_stat);
- if (vsf_sysutil_statbuf_is_regfile(p_stat))
- {
- size = vsf_sysutil_statbuf_get_size(p_stat);
- if (size > maxsize)
- {
- size = maxsize;
- }
- vsf_secbuf_alloc(&p_sec_buf, (unsigned int) size);
- retval = vsf_sysutil_read_loop(fd, p_sec_buf, (unsigned int) size);
- if (vsf_sysutil_retval_is_error(retval))
- {
- goto free_out;
- }
- else if ((unsigned int) retval != size)
- {
- die("read size mismatch");
- }
- str_alloc_memchunk(p_str, p_sec_buf, size);
- }
- free_out:
- vsf_sysutil_free(p_stat);
- vsf_secbuf_free(&p_sec_buf);
- vsf_sysutil_close(fd);
- return retval;
- }