X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=builtin-mailinfo.c;h=dacc8ac2d0e63e46dd1aa8fee6ba949bdd319e43;hb=2990034f1ed2c3d85d23d5611a1f04d317f785ac;hp=b99a5b6f9679061d75e9c48e2fa5877e27920dc3;hpb=93310a40eb022a0e36e7c618921931d8ffc31fd1;p=git.git

diff --git a/builtin-mailinfo.c b/builtin-mailinfo.c
index b99a5b6f9..dacc8ac2d 100644
--- a/builtin-mailinfo.c
+++ b/builtin-mailinfo.c
@@ -107,7 +107,7 @@ static void handle_from(const struct strbuf *from)
 	el = strcspn(at, " \n\t\r\v\f>");
 	strbuf_reset(&email);
 	strbuf_add(&email, at, el);
-	strbuf_remove(&f, at - f.buf, el + 1);
+	strbuf_remove(&f, at - f.buf, el + (at[el] ? 1 : 0));
 
 	/* The remainder is name.  It could be "John Doe <john.doe@xz>"
 	 * or "john.doe@xz (John Doe)", but we have removed the
@@ -115,10 +115,10 @@ static void handle_from(const struct strbuf *from)
 	 * the () pair at the end.
 	 */
 	strbuf_trim(&f);
-	if (f.buf[0] == '(')
-		strbuf_remove(&name, 0, 1);
-	if (f.len && f.buf[f.len - 1] == ')')
+	if (f.buf[0] == '(' && f.len && f.buf[f.len - 1] == ')') {
+		strbuf_remove(&f, 0, 1);
 		strbuf_setlen(&f, f.len - 1);
+	}
 
 	get_sane_name(&name, &f, &email);
 	strbuf_release(&f);
@@ -175,7 +175,7 @@ static void handle_content_type(struct strbuf *line)
 		 message_type = TYPE_OTHER;
 	if (slurp_attr(line->buf, "boundary=", boundary)) {
 		strbuf_insert(boundary, 0, "--", 2);
-		if (content_top++ >= &content[MAX_BOUNDARIES]) {
+		if (++content_top > &content[MAX_BOUNDARIES]) {
 			fprintf(stderr, "Too many boundaries to handle\n");
 			exit(1);
 		}
@@ -203,7 +203,8 @@ static void handle_content_transfer_encoding(const struct strbuf *line)
 
 static int is_multipart_boundary(const struct strbuf *line)
 {
-	return !strbuf_cmp(line, *content_top);
+	return (((*content_top)->len <= line->len) &&
+		!memcmp(line->buf, (*content_top)->buf, (*content_top)->len));
 }
 
 static void cleanup_subject(struct strbuf *subject)
@@ -429,13 +430,6 @@ static struct strbuf *decode_b_segment(const struct strbuf *b_seg)
 			c -= 'a' - 26;
 		else if ('0' <= c && c <= '9')
 			c -= '0' - 52;
-		else if (c == '=') {
-			/* padding is almost like (c == 0), except we do
-			 * not output NUL resulting only from it;
-			 * for now we just trust the data.
-			 */
-			c = 0;
-		}
 		else
 			continue; /* garbage */
 		switch (pos++) {
@@ -513,7 +507,25 @@ static int decode_header_bq(struct strbuf *it)
 		rfc2047 = 1;
 
 		if (in != ep) {
-			strbuf_add(&outbuf, in, ep - in);
+			/*
+			 * We are about to process an encoded-word
+			 * that begins at ep, but there is something
+			 * before the encoded word.
+			 */
+			char *scan;
+			for (scan = in; scan < ep; scan++)
+				if (!isspace(*scan))
+					break;
+
+			if (scan != ep || in == it->buf) {
+				/*
+				 * We should not lose that "something",
+				 * unless we have just processed an
+				 * encoded-word, and there is only LWS
+				 * before the one we are about to process.
+				 */
+				strbuf_add(&outbuf, in, ep - in);
+			}
 			in = ep;
 		}
 		/* E.g.
@@ -602,7 +614,7 @@ static void handle_filter(struct strbuf *line);
 static int find_boundary(void)
 {
 	while (!strbuf_getline(&line, fin, '\n')) {
-		if (is_multipart_boundary(&line))
+		if (*content_top && is_multipart_boundary(&line))
 			return 1;
 	}
 	return 0;
@@ -625,7 +637,7 @@ again:
 		/* technically won't happen as is_multipart_boundary()
 		   will fail first.  But just in case..
 		 */
-		if (content_top-- < content) {
+		if (--content_top < content) {
 			fprintf(stderr, "Detected mismatched boundaries, "
 					"can't recover\n");
 			exit(1);
@@ -649,8 +661,11 @@ again:
 		check_header(&line, p_hdr_data, 0);
 
 	strbuf_release(&newline);
-	/* eat the blank line after section info */
-	return (strbuf_getline(&line, fin, '\n') == 0);
+	/* replenish line */
+	if (strbuf_getline(&line, fin, '\n'))
+		return 0;
+	strbuf_addch(&line, '\n');
+	return 1;
 }
 
 static inline int patchbreak(const struct strbuf *line)
@@ -757,9 +772,10 @@ static void handle_body(void)
 		/* process any boundary lines */
 		if (*content_top && is_multipart_boundary(&line)) {
 			/* flush any leftover */
-			if (line.len)
-				handle_filter(&line);
-
+			if (prev.len) {
+				handle_filter(&prev);
+				strbuf_reset(&prev);
+			}
 			if (!handle_boundary())
 				goto handle_body_out;
 		}
@@ -855,6 +871,7 @@ static void handle_info(void)
 			}
 			output_header_lines(fout, "Subject", hdr);
 		} else if (!memcmp(header[i], "From", 4)) {
+			cleanup_space(hdr);
 			handle_from(hdr);
 			fprintf(fout, "Author: %s\n", name.buf);
 			fprintf(fout, "Email: %s\n", email.buf);