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Support input mapping modes for sockets

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This commit is contained in:
Braden Young 2023-04-14 11:18:27 -07:00
parent 791b1df27e
commit 65b3353f57
1 changed files with 58 additions and 2 deletions
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60
src/socket.c
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@ -41,6 +41,9 @@ static int sockfd;
static int clientfds[MAX_SOCKET_CLIENTS];
static int socket_family = AF_UNSPEC;
static int port_number = SOCKET_PORT_DEFAULT;
static bool map_i_nl_cr = false;
static bool map_i_cr_nl = false;
static bool map_ign_cr = false;
static const char *socket_filename(void)
{
@ -123,6 +126,9 @@ void socket_configure(void)
struct sockaddr_in6 sockaddr_inet6 = {};
struct sockaddr *sockaddr_p;
socklen_t socklen;
bool token_found = true;
char *token = NULL;
char *buffer;
/* Parse socket string */
@ -175,6 +181,41 @@ void socket_configure(void)
exit(EXIT_FAILURE);
}
/* Configure any specified input mappings */
buffer = strdup(option.map);
while (token_found == true)
{
if (token == NULL)
{
token = strtok(buffer,",");
}
else
{
token = strtok(NULL, ",");
}
if (token != NULL)
{
if (strcmp(token,"INLCR") == 0)
{
map_i_nl_cr = true;
}
else if (strcmp(token,"IGNCR") == 0)
{
map_ign_cr = true;
}
else if (strcmp(token,"ICRNL") == 0)
{
map_i_cr_nl = true;
}
}
else
{
token_found = false;
}
}
free(buffer);
/* Configure socket */
switch (socket_family)
@ -340,11 +381,26 @@ bool socket_handle_input(fd_set *rdfs, char *output_char)
clientfds[i] = -1;
continue;
}
/* match the behavior of a terminal in raw mode */
if (*output_char == '\n')
/* If INLCR is set, a received NL character shall be translated into a CR character */
if (*output_char == '\n' && map_i_nl_cr)
{
*output_char = '\r';
}
else if (*output_char == '\r')
{
/* If IGNCR is set, a received CR character shall be ignored (not read). */
if (map_ign_cr)
{
return false;
}
/* If IGNCR is not set and ICRNL is set, a received CR character shall be translated into an NL character. */
if (map_i_cr_nl)
{
*output_char = '\n';
}
}
return true;
}
}