verify-pack: test for detection of index v2 object CRC mismatch

diff --git a/builtin-mailsplit.c b/builtin-mailsplit.c
index 10fa1773401d6474d8e6c88065e3a992690ae0f8..ae2b4cb21bf4e691a044e2ace3cdd4861562ceca 100644 (file)
--- a/builtin-mailsplit.c
+++ b/builtin-mailsplit.c
@@ -45,6 +45,24 @@ static int is_from_line(const char *line, int len)
 /* Could be as small as 64, enough to hold a Unix "From " line. */
 static char buf[4096];
 
+/* We cannot use fgets() because our lines can contain NULs */
+int read_line_with_nul(char *buf, int size, FILE *in)
+{
+       int len = 0, c;
+
+       for (;;) {
+               c = getc(in);
+               if (c == EOF)
+                       break;
+               buf[len++] = c;
+               if (c == '\n' || len + 1 >= size)
+                       break;
+       }
+       buf[len] = '\0';
+
+       return len;
+}
+
 /* Called with the first line (potentially partial)
  * already in buf[] -- normally that should begin with
  * the Unix "From " line.  Write it into the specified
@@ -70,19 +88,19 @@ static int split_one(FILE *mbox, const char *name, int allow_bare)
         * "From " and having something that looks like a date format.
         */
        for (;;) {
-               int is_partial = (buf[len-1] != '\n');
+               int is_partial = len && buf[len-1] != '\n';
 
-               if (fputs(buf, output) == EOF)
+               if (fwrite(buf, 1, len, output) != len)
                        die("cannot write output");
 
-               if (fgets(buf, sizeof(buf), mbox) == NULL) {
+               len = read_line_with_nul(buf, sizeof(buf), mbox);
+               if (len == 0) {
                        if (feof(mbox)) {
                                status = 1;
                                break;
                        }
                        die("cannot read mbox");
                }
-               len = strlen(buf);
                if (!is_partial && !is_bare && is_from_line(buf, len))
                        break; /* done with one message */
        }
@@ -170,6 +188,7 @@ static int split_mbox(const char *file, const char *dir, int allow_bare,
 {
        char name[PATH_MAX];
        int ret = -1;
+       int peek;
 
        FILE *f = !strcmp(file, "-") ? stdin : fopen(file, "r");
        int file_done = 0;
@@ -179,6 +198,11 @@ static int split_mbox(const char *file, const char *dir, int allow_bare,
                goto out;
        }
 
+       do {
+               peek = fgetc(f);
+       } while (isspace(peek));
+       ungetc(peek, f);
+
        if (fgets(buf, sizeof(buf), f) == NULL) {
                /* empty stdin is OK */
                if (f != stdin) {