Fixed common misspellings.

Mostly found by 'codespell'.

src/libcharon/config/child_cfg.h

@@ -73,7 +73,7 @@ struct child_cfg_t {
 	 * Add a proposal to the list.
 	 *
 	 * The proposals are stored by priority, first added
-	 * is the most prefered.
+	 * is the most preferred.
 	 * After add, proposal is owned by child_cfg.
 	 *
 	 * @param proposal		proposal to add
@@ -95,7 +95,7 @@ struct child_cfg_t {
 	 *
 	 * Returned propsal is newly created and must be destroyed after usage.
 	 *
-	 * @param proposals		list from from wich proposals are selected
+	 * @param proposals		list from which proposals are selected
 	 * @param strip_dh		TRUE strip out diffie hellman groups
 	 * @param private		accept algorithms from a private range
 	 * @return				selected proposal, or NULL if nothing matches

src/libcharon/config/peer_cfg.c

@@ -110,7 +110,7 @@ struct private_peer_cfg_t {
 	u_int32_t reauth_time;
 
 	/**
-	 * Time, which specifies the range of a random value substracted from above.
+	 * Time, which specifies the range of a random value subtracted from above.
 	 */
 	u_int32_t jitter_time;
 

src/libcharon/config/peer_cfg.h

@@ -110,7 +110,7 @@ extern enum_name_t *unique_policy_names;
  * peer. Each config is enforced using the multiple authentication extension
  * (RFC4739).
  * The remote authentication configs are handled as constraints. The peer has
- * to fullfill each of these rules (using multiple authentication, in any order)
+ * to fulfill each of these rules (using multiple authentication, in any order)
  * to gain access to the configuration.
  */
 struct peer_cfg_t {
@@ -328,14 +328,14 @@ struct peer_cfg_t {
  * (rekeylifetime - random(0, jitter)).
  *
  * @param name				name of the peer_cfg
- * @param ike_version		which IKE version we sould use for this peer
+ * @param ike_version		which IKE version we should use for this peer
  * @param ike_cfg			IKE config to use when acting as initiator
  * @param cert_policy		should we send a certificate payload?
  * @param unique			uniqueness of an IKE_SA
  * @param keyingtries		how many keying tries should be done before giving up
  * @param rekey_time		timeout before starting rekeying
  * @param reauth_time		timeout before starting reauthentication
- * @param jitter_time		timerange to randomly substract from rekey/reauth time
+ * @param jitter_time		timerange to randomly subtract from rekey/reauth time
  * @param over_time			maximum overtime before closing a rekeying/reauth SA
  * @param mobike			use MOBIKE (RFC4555) if peer supports it
  * @param dpd				DPD check interval, 0 to disable

src/libcharon/config/proposal.h

@@ -120,7 +120,7 @@ struct proposal_t {
 	 * compared. If they have at least one algorithm of each type
 	 * in common, a resulting proposal of this kind is created.
 	 *
-	 * @param other			proposal to compair agains
+	 * @param other			proposal to compare against
 	 * @param private		accepts algorithms allocated in a private range
 	 * @return				selected proposal, NULL if proposals don't match
 	 */
@@ -180,7 +180,7 @@ struct proposal_t {
  *
  * @param protocol			protocol, such as PROTO_ESP
  * @param number			proposal number, as encoded in SA payload
- * @return 					proposal_t object
+ * @return					proposal_t object
  */
 proposal_t *proposal_create(protocol_id_t protocol, u_int number);
 
@@ -188,7 +188,7 @@ proposal_t *proposal_create(protocol_id_t protocol, u_int number);
  * Create a default proposal if nothing further specified.
  *
  * @param protocol			protocol, such as PROTO_ESP
- * @return 					proposal_t object
+ * @return					proposal_t object
  */
 proposal_t *proposal_create_default(protocol_id_t protocol);
 
@@ -203,7 +203,7 @@ proposal_t *proposal_create_default(protocol_id_t protocol);
  *
  * @param protocol			protocol, such as PROTO_ESP
  * @param algs				algorithms as string
- * @return 					proposal_t object
+ * @return					proposal_t object
  */
 proposal_t *proposal_create_from_string(protocol_id_t protocol, const char *algs);