68 lines
1.6 KiB
C
Executable File
68 lines
1.6 KiB
C
Executable File
/*
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* Copyright (c) 2013 Jan Klemkow <j.klemkow@wemelug.de>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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off_t
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get_range(void)
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{
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char *str = getenv("HTTP_RANGE");
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if (str == NULL)
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return 0;
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if ((str = strchr(str, '=')) == NULL)
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return 0;
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return strtol(str + 1, NULL, 10);
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}
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int
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main(int argv, char**argc)
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{
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char *file = "out";
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int fd;
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char buf[BUFSIZ];
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size_t size, diff = 0;
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off_t range = get_range();
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if ((fd = open(file, O_RDONLY)) < 0)
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goto err;
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if (lseek(fd, range, SEEK_SET) < 0)
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goto err;
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/* TODO: if eof than use libevent to detect file changes */
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printf("Content-Length: %zd\n", diff);
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printf("Content-type: text/plain\n\n");
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while ((size = read(fd, buf, BUFSIZ)) > 0)
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if (write(STDOUT_FILENO, buf, size) < 0)
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goto err;
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if (size < 0)
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goto err;
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return EXIT_SUCCESS;
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err:
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perror(NULL);
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return EXIT_FAILURE;
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}
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