From cb494f72f398bb0898030a1225f9ef6da557e959 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Mon, 14 Dec 2015 09:38:51 -0400 Subject: [PATCH] crypto: make crypto ctx initialization an array Make it trivial to add handlers for new protocols without duplicating code. No functional changes. --- crypto.c | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/crypto.c b/crypto.c index 1187ad75..da0289dc 100644 --- a/crypto.c +++ b/crypto.c @@ -43,12 +43,27 @@ create_gpg_context (notmuch_crypto_t *crypto) return gpgctx; } +static const struct { + const char *protocol; + notmuch_crypto_context_t *(*get_context) (notmuch_crypto_t *crypto); +} protocols[] = { + { + .protocol = "application/pgp-signature", + .get_context = create_gpg_context, + }, + { + .protocol = "application/pgp-encrypted", + .get_context = create_gpg_context, + }, +}; + /* for the specified protocol return the context pointer (initializing * if needed) */ notmuch_crypto_context_t * notmuch_crypto_get_context (notmuch_crypto_t *crypto, const char *protocol) { notmuch_crypto_context_t *cryptoctx = NULL; + size_t i; if (! protocol) { fprintf (stderr, "Cryptographic protocol is empty.\n"); @@ -61,14 +76,14 @@ notmuch_crypto_get_context (notmuch_crypto_t *crypto, const char *protocol) * parameter names as defined in this document are * case-insensitive." Thus, we use strcasecmp for the protocol. */ - if (strcasecmp (protocol, "application/pgp-signature") == 0 || - strcasecmp (protocol, "application/pgp-encrypted") == 0) { - cryptoctx = create_gpg_context (crypto); - } else { - fprintf (stderr, "Unknown or unsupported cryptographic protocol.\n"); + for (i = 0; i < ARRAY_SIZE (protocols); i++) { + if (strcasecmp (protocol, protocols[i].protocol) == 0) + return protocols[i].get_context (crypto); } - return cryptoctx; + fprintf (stderr, "Unknown or unsupported cryptographic protocol.\n"); + + return NULL; } int -- 2.26.2