diff options
Diffstat (limited to 'lib/sha1.c')
| -rw-r--r-- | lib/sha1.c | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/lib/sha1.c b/lib/sha1.c index ce0f0b2e71f..cd79dfa8770 100644 --- a/lib/sha1.c +++ b/lib/sha1.c @@ -37,11 +37,11 @@ # include "unlocked-io.h" #endif +#include <byteswap.h> #ifdef WORDS_BIGENDIAN # define SWAP(n) (n) #else -# define SWAP(n) \ - (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24)) +# define SWAP(n) bswap_32 (n) #endif #define BLOCKSIZE 32768 @@ -122,21 +122,29 @@ sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf) } #endif +#ifdef GL_COMPILE_CRYPTO_STREAM + +#include "af_alg.h" + /* Compute SHA1 message digest for bytes read from STREAM. The - resulting message digest number will be written into the 16 bytes + resulting message digest number will be written into the 20 bytes beginning at RESBLOCK. */ int sha1_stream (FILE *stream, void *resblock) { - struct sha1_ctx ctx; - size_t sum; + switch (afalg_stream (stream, "sha1", resblock, SHA1_DIGEST_SIZE)) + { + case 0: return 0; + case -EIO: return 1; + } char *buffer = malloc (BLOCKSIZE + 72); if (!buffer) return 1; - /* Initialize the computation context. */ + struct sha1_ctx ctx; sha1_init_ctx (&ctx); + size_t sum; /* Iterate over full file contents. */ while (1) @@ -150,6 +158,14 @@ sha1_stream (FILE *stream, void *resblock) /* Read block. Take care for partial reads. */ while (1) { + /* Either process a partial fread() from this loop, + or the fread() in afalg_stream may have gotten EOF. + We need to avoid a subsequent fread() as EOF may + not be sticky. For details of such systems, see: + https://sourceware.org/bugzilla/show_bug.cgi?id=1190 */ + if (feof (stream)) + goto process_partial_block; + n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream); sum += n; @@ -169,12 +185,6 @@ sha1_stream (FILE *stream, void *resblock) } goto process_partial_block; } - - /* We've read at least one byte, so ignore errors. But always - check for EOF, since feof may be true even though N > 0. - Otherwise, we could end up calling fread after EOF. */ - if (feof (stream)) - goto process_partial_block; } /* Process buffer with BLOCKSIZE bytes. Note that @@ -194,6 +204,7 @@ sha1_stream (FILE *stream, void *resblock) free (buffer); return 0; } +#endif #if ! HAVE_OPENSSL_SHA1 /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The |