isa/sudo
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sudo_conversation_printf: simplify \n -> \r\n handling

Browse Source
This commit is contained in:
Todd C. Miller
2023-07-12 08:39:18 -06:00
parent a014b0f2aa
commit b47f1799c5
1 changed files with 12 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/conversation.c
View File

@@ -160,7 +160,6 @@ sudo_conversation_1_7(int num_msgs, const struct sudo_conv_message msgs[],
int
sudo_conversation_printf(int msg_type, const char * restrict fmt, ...)
{
const char *crnl = NULL;
FILE *ttyfp = NULL;
FILE *fp = stdout;
char fmt2[1024];
@@ -183,27 +182,28 @@ sudo_conversation_printf(int msg_type, const char * restrict fmt, ...)
case SUDO_CONV_INFO_MSG:
/* Convert nl -> cr nl in case tty is in raw mode. */
if (sudo_term_is_raw(fileno(ttyfp ? ttyfp : fp))) {
size_t fmtlen = strlen(fmt);
if (fmtlen < sizeof(fmt2) && fmtlen && fmt[fmtlen - 1] == '\n') {
size_t fmtlen = strlen(fmt);
if (fmtlen < sizeof(fmt2) - 1 && fmtlen && fmt[fmtlen - 1] == '\n') {
if (fmtlen == 1) {
fmt2[0] = '\0';
fmt = fmt2;
crnl = "\r\n";
/* Convert bare newline -> \r\n. */
len = (int)fwrite("\r\n", 1, 2, ttyfp ? ttyfp : fp);
if (len != 2)
len = -1;
break;
}
else if (fmt[fmtlen - 2] != '\r') {
if (fmt[fmtlen - 2] != '\r') {
/* Convert trailing \n -> \r\n. */
memcpy(fmt2, fmt, fmtlen - 1);
fmt2[fmtlen - 1] = '\0';
fmt2[fmtlen - 1] = '\r';
fmt2[fmtlen ] = '\n';
fmt2[fmtlen + 1] = '\0';
fmt = fmt2;
crnl = "\r\n";
}
}
}
va_start(ap, fmt);
len = vfprintf(ttyfp ? ttyfp : fp, fmt, ap);
va_end(ap);
if (len >= 0 && crnl != NULL) {
len += (int)fwrite(crnl, 1, 2, ttyfp ? ttyfp : fp);
}
break;
default:
len = -1;