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wks: New callback for the mime parser.

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* tools/mime-parser.c (mime_parser_context_s): New field 't2body'.
(parse_message_cb): Call that callback.
(mime_parser_set_t2body): New.
--

This callback allows to process header values even on the outer level.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2017-02-23 20:01:30 +01:00
parent effa80e0b5
commit a209025082
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
2 changed files with 27 additions and 0 deletions
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25
tools/mime-parser.c
View File

@ -49,6 +49,9 @@ struct mime_parser_context_s
{
void *cookie; /* Cookie passed to all callbacks. */
/* The callback to announce the transation from header to body. */
gpg_error_t (*t2body) (void *cookie, int level);
/* The callback to announce a new part. */
gpg_error_t (*new_part) (void *cookie,
const char *mediatype,
@ -224,6 +227,14 @@ parse_message_cb (void *opaque, rfc822parse_event_t event, rfc822parse_t msg)
ctx->want_part = 0;
ctx->decode_part = 0;
if (ctx->t2body)
{
rc = ctx->t2body (ctx->cookie, ctx->nesting_level);
if (rc)
goto t2body_leave;
}
field = rfc822parse_parse_field (msg, "Content-Type", -1);
if (field)
{
@ -412,6 +423,7 @@ parse_message_cb (void *opaque, rfc822parse_event_t event, rfc822parse_t msg)
}
}
t2body_leave:
ctx->show.header = 0;
ctx->show.data = 1;
ctx->show.n_skip = 1;
@ -541,6 +553,19 @@ mime_parser_set_verbose (mime_parser_t ctx, int level)
}
/* Set a callback for the transition from header to body. LEVEL is
* the current nesting level, starting with 0. This callback can be
* used to evaluate headers before any other action is done. Note
* that if a new NEW_PART callback needs to be called it is done after
* this T2BODY callback. */
void
mime_parser_set_t2body (mime_parser_t ctx,
gpg_error_t (*fnc) (void *cookie, int level))
{
ctx->t2body = fnc;
}
/* Set the callback used to announce a new part. It will be called
* with the media type and media subtype of the part. If no
* Content-type header was given both values are the empty string.

2
tools/mime-parser.h
View File

@ -27,6 +27,8 @@ gpg_error_t mime_parser_new (mime_parser_t *r_ctx, void *cookie);
void mime_parser_release (mime_parser_t ctx);
void mime_parser_set_verbose (mime_parser_t ctx, int level);
void mime_parser_set_t2body (mime_parser_t ctx,
gpg_error_t (*fnc) (void *cookie, int level));
void mime_parser_set_new_part (mime_parser_t ctx,
gpg_error_t (*fnc) (void *cookie,
const char *mediatype,