1103098Sphk/* mdXhl.c * ---------------------------------------------------------------------------- 21802Sphk * "THE BEER-WARE LICENSE" (Revision 42): 393149Sphk * <phk@FreeBSD.org> wrote this file. As long as you retain this notice you 41802Sphk * can do whatever you want with this stuff. If we meet some day, and you think 51802Sphk * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 61802Sphk * ---------------------------------------------------------------------------- 71802Sphk */ 81802Sphk 984211Sdillon#include <sys/cdefs.h> 1084211Sdillon__FBSDID("$FreeBSD$"); 1184211Sdillon 126684Sphk#include <sys/types.h> 1374385Sphk#include <sys/stat.h> 1419168Sbde#include <fcntl.h> 156684Sphk#include <unistd.h> 161802Sphk 1719168Sbde#include <errno.h> 1819168Sbde#include <stdio.h> 1919168Sbde#include <stdlib.h> 2019168Sbde 2119168Sbde#include "mdX.h" 2219168Sbde 231802Sphkchar * 249488SphkMDXEnd(MDX_CTX *ctx, char *buf) 251802Sphk{ 26103098Sphk int i; 27103098Sphk unsigned char digest[LENGTH]; 28103098Sphk static const char hex[]="0123456789abcdef"; 298870Srgrimes 30103098Sphk if (!buf) 31103098Sphk buf = malloc(2*LENGTH + 1); 32103098Sphk if (!buf) 33103098Sphk return 0; 34103098Sphk MDXFinal(digest, ctx); 35103098Sphk for (i = 0; i < LENGTH; i++) { 36103098Sphk buf[i+i] = hex[digest[i] >> 4]; 37103098Sphk buf[i+i+1] = hex[digest[i] & 0x0f]; 38103098Sphk } 39103098Sphk buf[i+i] = '\0'; 40103098Sphk return buf; 411802Sphk} 421802Sphk 431802Sphkchar * 4444290SwollmanMDXFile(const char *filename, char *buf) 451802Sphk{ 46103098Sphk return (MDXFileChunk(filename, buf, 0, 0)); 4774385Sphk} 4874385Sphk 4974385Sphkchar * 5074385SphkMDXFileChunk(const char *filename, char *buf, off_t ofs, off_t len) 5174385Sphk{ 52103098Sphk unsigned char buffer[BUFSIZ]; 53103098Sphk MDX_CTX ctx; 54103098Sphk struct stat stbuf; 55103098Sphk int f, i, e; 56103098Sphk off_t n; 571802Sphk 58103098Sphk MDXInit(&ctx); 59103098Sphk f = open(filename, O_RDONLY); 60103098Sphk if (f < 0) 61103098Sphk return 0; 62103098Sphk if (fstat(f, &stbuf) < 0) 63103098Sphk return 0; 64103098Sphk if (ofs > stbuf.st_size) 65103098Sphk ofs = stbuf.st_size; 66103098Sphk if ((len == 0) || (len > stbuf.st_size - ofs)) 67103098Sphk len = stbuf.st_size - ofs; 68103098Sphk if (lseek(f, ofs, SEEK_SET) < 0) 69103098Sphk return 0; 70103098Sphk n = len; 71103098Sphk i = 0; 72103098Sphk while (n > 0) { 73103098Sphk if (n > sizeof(buffer)) 74103098Sphk i = read(f, buffer, sizeof(buffer)); 75103098Sphk else 76103098Sphk i = read(f, buffer, n); 77103098Sphk if (i < 0) 78103098Sphk break; 79103098Sphk MDXUpdate(&ctx, buffer, i); 80103098Sphk n -= i; 81103098Sphk } 82103098Sphk e = errno; 83103098Sphk close(f); 84103098Sphk errno = e; 85103098Sphk if (i < 0) 86103098Sphk return 0; 87103098Sphk return (MDXEnd(&ctx, buf)); 881802Sphk} 891802Sphk 901802Sphkchar * 91154479SphkMDXData (const void *data, unsigned int len, char *buf) 921802Sphk{ 93103098Sphk MDX_CTX ctx; 941802Sphk 95103098Sphk MDXInit(&ctx); 96103098Sphk MDXUpdate(&ctx,data,len); 97103098Sphk return (MDXEnd(&ctx, buf)); 981802Sphk} 99