mirror of https://git.lain.church/x3/caniadd.git
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
#define _XOPEN_SOURCE 500
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#include <sys/stat.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include "util.h"
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#include "ed2k.h"
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#include "ed2k_util.h"
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#include "uio.h"
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#include "globals.h"
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static enum error ed2k_util_hash(const char *file_path, const struct stat *st, void *data)
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{
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off_t blksize = st->st_blksize;
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unsigned char buf[blksize], hash[ED2K_HASH_SIZE];
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struct ed2k_util_opts *opts = data;
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struct ed2k_ctx ed2k;
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enum error err;
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FILE *f;
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size_t read_len;
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int en;
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if (opts->pre_hash_fn) {
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err = opts->pre_hash_fn(file_path, st, opts->data);
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if (err == ED2KUTIL_DONTHASH)
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return NOERR;
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else if (err != NOERR)
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return err;
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}
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f = fopen(file_path, "rb");
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if (!f) {
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en = errno;
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uio_error("Failed to open file: %s (%s)", file_path, strerror(en));
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if (en == EINTR && should_exit)
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return ERR_SHOULD_EXIT;
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else
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return ERR_ITERPATH;
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}
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ed2k_init(&ed2k);
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read_len = fread(buf, 1, sizeof(buf), f);
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/* From my test, fread wont return anything special on signal interrupt */
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while (read_len > 0 && !should_exit) {
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ed2k_update(&ed2k, buf, read_len);
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read_len = fread(buf, 1, sizeof(buf), f);
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}
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if (should_exit) {
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err = ERR_SHOULD_EXIT;
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goto fail;
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}
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if (ferror(f)) { /* Loop stopped bcuz of error, not EOF */
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uio_error("Failure while reading file");
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err = ERR_ITERPATH;
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goto fail;
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}
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assert(feof(f));
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ed2k_final(&ed2k, hash);
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if (fclose(f) != 0) {
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en = errno;
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uio_debug("Fclose failed: %s", strerror(en));
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if (en == EINTR && should_exit)
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return ERR_SHOULD_EXIT;
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else
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return ERR_ITERPATH;
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}
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if (opts->post_hash_fn)
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return opts->post_hash_fn(file_path, hash, st, opts->data);
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return NOERR;
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fail:
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if (f) /* We can't get a 2nd interrupt now */
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fclose(f);
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return err;
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}
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enum error ed2k_util_iterpath(const char *path, const struct ed2k_util_opts *opts)
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{
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return util_iterpath(path, ed2k_util_hash, (void*)opts);
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}
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