63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
#include <stdint.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <hexagram/pcapng.h>
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ssize_t hexagram_pcapng_stream_read(fd, handler, error)
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int fd;
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hexagram_pcapng_block_handler *handler;
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int *error;
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{
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hexagram_pcapng_header header;
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hexagram_pcapng_footer footer;
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ssize_t total = 0;
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while (1) {
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ssize_t readlen;
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size_t bodylen;
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if ((readlen = read(fd, &header, sizeof(header))) < 0) {
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*error = HEXAGRAM_PCAPNG_ERROR_IO;
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goto error_io;
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} else if (readlen == 0) {
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goto done;
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} else if (readlen < sizeof(header)) {
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*error = HEXAGRAM_PCAPNG_ERROR_TRUNCATED;
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goto error_io;
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}
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total += readlen;
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bodylen = header.length - sizeof(header) - sizeof(footer);
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if (handler(fd, header.type, header.length) < 0) {
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*error = HEXAGRAM_PCAPNG_ERROR_HANDLER;
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goto error_io;
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}
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if ((readlen = read(fd, &footer, sizeof(footer))) < 0) {
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*error = HEXAGRAM_PCAPNG_ERROR_IO;
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goto error_io;
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} else if (readlen == 0) {
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goto done;
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} else if (readlen < sizeof(footer)) {
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*error = HEXAGRAM_PCAPNG_ERROR_TRUNCATED;
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goto error_io;
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}
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}
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*error = HEXAGRAM_PCAPNG_ERROR_OK;
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done:
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return total;
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error_io:
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return -1;
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}
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