diff options
Diffstat (limited to 'builtin-mailsplit.c')
| -rw-r--r-- | builtin-mailsplit.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/builtin-mailsplit.c b/builtin-mailsplit.c index 46b27cdaea..ae2b4cb21b 100644 --- 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 */ } |