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add a function to check if a given path is in the blob-directory

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This commit is contained in:
B. Petersen 2018-10-12 01:02:26 +02:00
parent 6072d73b08
commit d7cd9c0b1e
2 changed files with 17 additions and 2 deletions
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18
src/dc_tools.c
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@ -1429,6 +1429,21 @@ void dc_make_rel_path(dc_context_t* context, char** path)
}
/**
* Check if a path describes a file in the blob directory.
* The path can be give absolute or relative (starting with `$BLOBDIR`).
* The function does not check if the file really exists.
*/
int dc_is_in_blobdir(dc_context_t* context, const char* path)
{
if ((strncmp(path, context->blobdir, strlen(context->blobdir))==0)
|| (strncmp(path, "$BLOBDIR", 8)==0)) {
return 1;
}
return 0;
}
/**
* Copy a file to the blob directory, if needed.
*
@ -1447,8 +1462,7 @@ int dc_make_rel_and_copy(dc_context_t* context, char** path)
goto cleanup;
}
if ((strncmp(*path, context->blobdir, strlen(context->blobdir))==0)
|| (strncmp(*path, "$BLOBDIR", 8)==0)) {
if (dc_is_in_blobdir(context, *path)) {
dc_make_rel_path(context, path);
success = 1; // file is already in blobdir
goto cleanup;