commit 69a41e8bc6e148c471ae8ee860e1a43548729db0 Author: Alexander Færøy ahf@torproject.org Date: Thu Apr 20 16:37:39 2017 +0200

Use switch-statement in tor_{compress,uncompress}.

Use a switch-statement in `tor_compress()` and `tor_uncompress()` for the given `compress_method_t` parameter. This allows us to have the compiler detect if we forgot add a handler in these functions for a newly added enumeration value.

See: https://bugs.torproject.org/21662 --- src/common/compress.c | 64 ++++++++++++++++++++++++++++----------------------- 1 file changed, 35 insertions(+), 29 deletions(-)

diff --git a/src/common/compress.c b/src/common/compress.c index e64bbca..8b49af8 100644 --- a/src/common/compress.c +++ b/src/common/compress.c @@ -80,16 +80,19 @@ tor_compress(char **out, size_t *out_len, const char *in, size_t in_len, compress_method_t method) { - if (method == GZIP_METHOD || method == ZLIB_METHOD) - return tor_zlib_compress(out, out_len, in, in_len, method); - - if (method == LZMA_METHOD) - return tor_lzma_compress(out, out_len, in, in_len, method); - - if (method == ZSTD_METHOD) - return tor_zstd_compress(out, out_len, in, in_len, method); - - return -1; + switch (method) { + case GZIP_METHOD: + case ZLIB_METHOD: + return tor_zlib_compress(out, out_len, in, in_len, method); + case LZMA_METHOD: + return tor_lzma_compress(out, out_len, in, in_len, method); + case ZSTD_METHOD: + return tor_zstd_compress(out, out_len, in, in_len, method); + case NO_METHOD: + case UNKNOWN_METHOD: + default: + return -1; + } }

/** Given zero or more zlib-compressed or gzip-compressed strings of @@ -110,25 +113,28 @@ tor_uncompress(char **out, size_t *out_len, int complete_only, int protocol_warn_level) { - if (method == GZIP_METHOD || method == ZLIB_METHOD) - return tor_zlib_uncompress(out, out_len, in, in_len, - method, - complete_only, - protocol_warn_level); - - if (method == LZMA_METHOD) - return tor_lzma_uncompress(out, out_len, in, in_len, - method, - complete_only, - protocol_warn_level); - - if (method == ZSTD_METHOD) - return tor_zstd_uncompress(out, out_len, in, in_len, - method, - complete_only, - protocol_warn_level); - - return -1; + switch (method) { + case GZIP_METHOD: + case ZLIB_METHOD: + return tor_zlib_uncompress(out, out_len, in, in_len, + method, + complete_only, + protocol_warn_level); + case LZMA_METHOD: + return tor_lzma_uncompress(out, out_len, in, in_len, + method, + complete_only, + protocol_warn_level); + case ZSTD_METHOD: + return tor_zstd_uncompress(out, out_len, in, in_len, + method, + complete_only, + protocol_warn_level); + case NO_METHOD: + case UNKNOWN_METHOD: + default: + return -1; + } }

/** Try to tell whether the <b>in_len</b>-byte string in <b>in</b> is likely