2 * SPDX-License-Identifier: Beerware
4 * ----------------------------------------------------------------------------
5 * "THE BEER-WARE LICENSE" (Revision 42):
6 * <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
7 * can do whatever you want with this stuff. If we meet some day, and you think
8 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
9 * ----------------------------------------------------------------------------
12 #include <sys/cdefs.h>
13 #include <sys/types.h>
25 MDXEnd(MDX_CTX *ctx, char *buf)
28 unsigned char digest[LENGTH];
29 static const char hex[]="0123456789abcdef";
32 buf = malloc(2*LENGTH + 1);
35 MDXFinal(digest, ctx);
36 for (i = 0; i < LENGTH; i++) {
37 buf[i+i] = hex[digest[i] >> 4];
38 buf[i+i+1] = hex[digest[i] & 0x0f];
45 MDXFd(int fd, char *buf)
47 return MDXFdChunk(fd, buf, 0, 0);
51 MDXFdChunk(int fd, char *buf, off_t ofs, off_t len)
53 unsigned char buffer[16*1024];
67 if (lseek(fd, ofs, SEEK_SET) != ofs ||
68 (ofs == -1 && errno != 0)) {
75 while (len == 0 || remain > 0) {
76 if (len == 0 || remain > sizeof(buffer))
77 readrv = read(fd, buffer, sizeof(buffer));
79 readrv = read(fd, buffer, remain);
82 MDXUpdate(&ctx, buffer, readrv);
88 return (MDXEnd(&ctx, buf));
92 MDXFile(const char *filename, char *buf)
94 return (MDXFileChunk(filename, buf, 0, 0));
98 MDXFileChunk(const char *filename, char *buf, off_t ofs, off_t len)
103 fd = open(filename, O_RDONLY);
106 ret = MDXFdChunk(fd, buf, ofs, len);
114 MDXData (const void *data, unsigned int len, char *buf)
119 MDXUpdate(&ctx,data,len);
120 return (MDXEnd(&ctx, buf));
124 /* When building libmd, provide weak references. Note: this is not
125 activated in the context of compiling these sources for internal
129 __weak_reference(_libmd_MDXEnd, MDXEnd);
131 __weak_reference(_libmd_MDXFile, MDXFile);
133 __weak_reference(_libmd_MDXFileChunk, MDXFileChunk);
135 __weak_reference(_libmd_MDXData, MDXData);