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Diffstat (limited to 'mailinfo.c')
-rw-r--r--mailinfo.c134
1 files changed, 102 insertions, 32 deletions
diff --git a/mailinfo.c b/mailinfo.c
index d04142ccc7..742fa376ab 100644
--- a/mailinfo.c
+++ b/mailinfo.c
@@ -19,8 +19,7 @@ static void cleanup_space(struct strbuf *sb)
static void get_sane_name(struct strbuf *out, struct strbuf *name, struct strbuf *email)
{
struct strbuf *src = name;
- if (name->len < 3 || 60 < name->len || strchr(name->buf, '@') ||
- strchr(name->buf, '<') || strchr(name->buf, '>'))
+ if (name->len < 3 || 60 < name->len || strpbrk(name->buf, "@<>"))
src = email;
else if (name == out)
return;
@@ -237,13 +236,24 @@ static int slurp_attr(const char *line, const char *name, struct strbuf *attr)
return 1;
}
+static int has_attr_value(const char *line, const char *name, const char *value)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int rc = slurp_attr(line, name, &sb) && !strcasecmp(sb.buf, value);
+ strbuf_release(&sb);
+ return rc;
+}
+
static void handle_content_type(struct mailinfo *mi, struct strbuf *line)
{
struct strbuf *boundary = xmalloc(sizeof(struct strbuf));
strbuf_init(boundary, line->len);
+ mi->format_flowed = has_attr_value(line->buf, "format=", "flowed");
+ mi->delsp = has_attr_value(line->buf, "delsp=", "yes");
+
if (slurp_attr(line->buf, "boundary=", boundary)) {
- strbuf_insert(boundary, 0, "--", 2);
+ strbuf_insertstr(boundary, 0, "--");
if (++mi->content_top >= &mi->content[MAX_BOUNDARIES]) {
error("Too many boundaries to handle");
mi->input_error = -1;
@@ -335,11 +345,17 @@ static const char *header[MAX_HDR_PARSED] = {
"From","Subject","Date",
};
-static inline int cmp_header(const struct strbuf *line, const char *hdr)
+static inline int skip_header(const struct strbuf *line, const char *hdr,
+ const char **outval)
{
- int len = strlen(hdr);
- return !strncasecmp(line->buf, hdr, len) && line->len > len &&
- line->buf[len] == ':' && isspace(line->buf[len + 1]);
+ const char *val;
+ if (!skip_iprefix(line->buf, hdr, &val) ||
+ *val++ != ':')
+ return 0;
+ while (isspace(*val))
+ val++;
+ *outval = val;
+ return 1;
}
static int is_format_patch_separator(const char *line, int len)
@@ -532,22 +548,36 @@ release_return:
mi->input_error = -1;
}
+/*
+ * Returns true if "line" contains a header matching "hdr", in which case "val"
+ * will contain the value of the header with any RFC2047 B and Q encoding
+ * unwrapped, and optionally normalize the meta information to utf8.
+ */
+static int parse_header(const struct strbuf *line,
+ const char *hdr,
+ struct mailinfo *mi,
+ struct strbuf *val)
+{
+ const char *val_str;
+
+ if (!skip_header(line, hdr, &val_str))
+ return 0;
+ strbuf_addstr(val, val_str);
+ decode_header(mi, val);
+ return 1;
+}
+
static int check_header(struct mailinfo *mi,
const struct strbuf *line,
struct strbuf *hdr_data[], int overwrite)
{
- int i, ret = 0, len;
+ int i, ret = 0;
struct strbuf sb = STRBUF_INIT;
/* search for the interesting parts */
for (i = 0; header[i]; i++) {
- int len = strlen(header[i]);
- if ((!hdr_data[i] || overwrite) && cmp_header(line, header[i])) {
- /* Unwrap inline B and Q encoding, and optionally
- * normalize the meta information to utf8.
- */
- strbuf_add(&sb, line->buf + len + 2, line->len - len - 2);
- decode_header(mi, &sb);
+ if ((!hdr_data[i] || overwrite) &&
+ parse_header(line, header[i], mi, &sb)) {
handle_header(&hdr_data[i], &sb);
ret = 1;
goto check_header_out;
@@ -555,27 +585,17 @@ static int check_header(struct mailinfo *mi,
}
/* Content stuff */
- if (cmp_header(line, "Content-Type")) {
- len = strlen("Content-Type: ");
- strbuf_add(&sb, line->buf + len, line->len - len);
- decode_header(mi, &sb);
- strbuf_insert(&sb, 0, "Content-Type: ", len);
+ if (parse_header(line, "Content-Type", mi, &sb)) {
handle_content_type(mi, &sb);
ret = 1;
goto check_header_out;
}
- if (cmp_header(line, "Content-Transfer-Encoding")) {
- len = strlen("Content-Transfer-Encoding: ");
- strbuf_add(&sb, line->buf + len, line->len - len);
- decode_header(mi, &sb);
+ if (parse_header(line, "Content-Transfer-Encoding", mi, &sb)) {
handle_content_transfer_encoding(mi, &sb);
ret = 1;
goto check_header_out;
}
- if (cmp_header(line, "Message-Id")) {
- len = strlen("Message-Id: ");
- strbuf_add(&sb, line->buf + len, line->len - len);
- decode_header(mi, &sb);
+ if (parse_header(line, "Message-Id", mi, &sb)) {
if (mi->add_message_id)
mi->message_id = strbuf_detach(&sb, NULL);
ret = 1;
@@ -596,8 +616,9 @@ static int is_inbody_header(const struct mailinfo *mi,
const struct strbuf *line)
{
int i;
+ const char *val;
for (i = 0; header[i]; i++)
- if (!mi->s_hdr_data[i] && cmp_header(line, header[i]))
+ if (!mi->s_hdr_data[i] && skip_header(line, header[i], &val))
return 1;
return 0;
}
@@ -716,7 +737,7 @@ static void flush_inbody_header_accum(struct mailinfo *mi)
if (!mi->inbody_header_accum.len)
return;
if (!check_header(mi, &mi->inbody_header_accum, mi->s_hdr_data, 0))
- die("BUG: inbody_header_accum, if not empty, must always contain a valid in-body header");
+ BUG("inbody_header_accum, if not empty, must always contain a valid in-body header");
strbuf_reset(&mi->inbody_header_accum);
}
@@ -964,6 +985,52 @@ again:
return 1;
}
+static void handle_filter_flowed(struct mailinfo *mi, struct strbuf *line,
+ struct strbuf *prev)
+{
+ size_t len = line->len;
+ const char *rest;
+
+ if (!mi->format_flowed) {
+ handle_filter(mi, line);
+ return;
+ }
+
+ if (line->buf[len - 1] == '\n') {
+ len--;
+ if (len && line->buf[len - 1] == '\r')
+ len--;
+ }
+
+ /* Keep signature separator as-is. */
+ if (skip_prefix(line->buf, "-- ", &rest) && rest - line->buf == len) {
+ if (prev->len) {
+ handle_filter(mi, prev);
+ strbuf_reset(prev);
+ }
+ handle_filter(mi, line);
+ return;
+ }
+
+ /* Unstuff space-stuffed line. */
+ if (len && line->buf[0] == ' ') {
+ strbuf_remove(line, 0, 1);
+ len--;
+ }
+
+ /* Save flowed line for later, but without the soft line break. */
+ if (len && line->buf[len - 1] == ' ') {
+ strbuf_add(prev, line->buf, len - !!mi->delsp);
+ return;
+ }
+
+ /* Prepend any previous partial lines */
+ strbuf_insert(line, 0, prev->buf, prev->len);
+ strbuf_reset(prev);
+
+ handle_filter(mi, line);
+}
+
static void handle_body(struct mailinfo *mi, struct strbuf *line)
{
struct strbuf prev = STRBUF_INIT;
@@ -1012,7 +1079,7 @@ static void handle_body(struct mailinfo *mi, struct strbuf *line)
strbuf_addbuf(&prev, sb);
break;
}
- handle_filter(mi, sb);
+ handle_filter_flowed(mi, sb, &prev);
}
/*
* The partial chunk is saved in "prev" and will be
@@ -1022,13 +1089,16 @@ static void handle_body(struct mailinfo *mi, struct strbuf *line)
break;
}
default:
- handle_filter(mi, line);
+ handle_filter_flowed(mi, line, &prev);
}
if (mi->input_error)
break;
} while (!strbuf_getwholeline(line, mi->input, '\n'));
+ if (prev.len)
+ handle_filter(mi, &prev);
+
flush_inbody_header_accum(mi);
handle_body_out:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 06:00:43 +0000