GUAC-236: Open output stream using file descriptor. Only write output file if it does not yet exist.
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@ -34,10 +34,14 @@
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#include <guacamole/client.h>
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#include <guacamole/timestamp.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <inttypes.h>
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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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guacenc_video* guacenc_video_alloc(const char* path, const char* codec_name,
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int width, int height, int bitrate) {
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@ -91,10 +95,18 @@ guacenc_video* guacenc_video_alloc(const char* path, const char* codec_name,
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}
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/* Open output file */
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FILE* output = fopen(path, "wb");
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if (output == NULL) {
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int fd = open(path, O_CREAT | O_EXCL | O_WRONLY, S_IRUSR | S_IWUSR);
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if (fd == -1) {
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guacenc_log(GUAC_LOG_ERROR, "Failed to open output file \"%s\": %s",
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path, strerror(errno));
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goto fail_output_fd;
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}
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/* Create stream for output file */
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FILE* output = fdopen(fd, "wb");
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if (output == NULL) {
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guacenc_log(GUAC_LOG_ERROR, "Failed to allocate stream for output "
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"file \"%s\": %s", path, strerror(errno));
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goto fail_output_file;
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}
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@ -123,6 +135,9 @@ fail_video:
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fclose(output);
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fail_output_file:
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close(fd);
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fail_output_fd:
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av_freep(&frame->data[0]);
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fail_frame_data:
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@ -93,9 +93,10 @@ typedef struct guacenc_video {
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/**
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* Allocates a new guacenc_video which encodes video according to the given
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* specifications, saving the output in the given file. The output file will be
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* created if necessary and truncated if it already exists. Frames will be
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* scaled up or down as necessary to fit the given width and height.
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* specifications, saving the output in the given file. If the output file
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* already exists, encoding will be aborted, and the original file contents
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* will be preserved. Frames will be scaled up or down as necessary to fit the
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* given width and height.
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*
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* @param path
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* The full path to the file in which encoded video should be written.
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