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93 lines
2.4 KiB
93 lines
2.4 KiB
/* |
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* Copyright (c) 2010 Mans Rullgard |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdio.h> |
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#include "libavutil/avstring.h" |
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#include "libavutil/md5.h" |
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#include "libavutil/mem.h" |
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#include "libavutil/error.h" |
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#include "avformat.h" |
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#include "avio.h" |
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#include "url.h" |
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#define PRIV_SIZE 128 |
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static int md5_open(URLContext *h, const char *filename, int flags) |
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{ |
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if (PRIV_SIZE < av_md5_size) { |
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av_log(NULL, AV_LOG_ERROR, "Insuffient size for MD5 context\n"); |
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return -1; |
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} |
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if (!flags & AVIO_FLAG_WRITE) |
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return AVERROR(EINVAL); |
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av_md5_init(h->priv_data); |
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return 0; |
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} |
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static int md5_write(URLContext *h, const unsigned char *buf, int size) |
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{ |
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av_md5_update(h->priv_data, buf, size); |
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return size; |
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} |
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static int md5_close(URLContext *h) |
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{ |
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const char *filename = h->filename; |
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uint8_t md5[16], buf[64]; |
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URLContext *out; |
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int i, err = 0; |
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av_md5_final(h->priv_data, md5); |
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for (i = 0; i < sizeof(md5); i++) |
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snprintf(buf + i*2, 3, "%02x", md5[i]); |
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buf[i*2] = '\n'; |
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av_strstart(filename, "md5:", &filename); |
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if (*filename) { |
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err = ffurl_open(&out, filename, AVIO_FLAG_WRITE); |
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if (err) |
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return err; |
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err = ffurl_write(out, buf, i*2+1); |
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ffurl_close(out); |
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} else { |
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if (fwrite(buf, 1, i*2+1, stdout) < i*2+1) |
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err = AVERROR(errno); |
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} |
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return err; |
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} |
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static int md5_get_handle(URLContext *h) |
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{ |
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return (intptr_t)h->priv_data; |
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} |
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URLProtocol ff_md5_protocol = { |
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.name = "md5", |
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.url_open = md5_open, |
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.url_write = md5_write, |
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.url_close = md5_close, |
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.url_get_file_handle = md5_get_handle, |
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.priv_data_size = PRIV_SIZE, |
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};
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