patty/src/call.c

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>

#include <patty/ax25.h>

int patty_ax25_call_socket(int server,
                           int opts,
                           int proto,
                           char *path,
                           size_t len) {
    enum patty_ax25_call call = PATTY_AX25_CALL_SOCKET;

    patty_ax25_call_socket_request request = {
        opts, proto
    };

    patty_ax25_call_socket_response response;

    if (write(server, &call, sizeof(call)) < 0) {
        goto error_io;
    }

    if (write(server, &request, sizeof(request)) < 0) {
        goto error_io;
    }

    if (read(server, &response, sizeof(response)) < 0) {
        goto error_io;
    }

    if (path) {
        strncpy(path, response.path, len);
    }

    errno = response.eno;

    return response.ret;

error_io:
    return -1;
}

int patty_ax25_call_bind(int server,
                         int fd,
                         patty_ax25_addr *peer) {
    enum patty_ax25_call call = PATTY_AX25_CALL_BIND;

    patty_ax25_call_bind_request request = {
        fd
    };

    patty_ax25_call_bind_response response;

    memcpy(&request.peer, peer, sizeof(*peer));

    if (write(server, &call, sizeof(call)) < 0) {
        goto error_io;
    }

    if (write(server, &request, sizeof(request)) < 0) {
        goto error_io;
    }

    if (read(server, &response, sizeof(response)) < 0) {
        goto error_io;
    }

    errno = response.eno;

    return response.ret;

error_io:
    return -1;
}

int patty_ax25_call_listen(int server,
                           int fd) {
    enum patty_ax25_call call = PATTY_AX25_CALL_LISTEN;

    patty_ax25_call_listen_request request = {
        fd
    };

    patty_ax25_call_listen_response response;

    if (write(server, &call, sizeof(call)) < 0) {
        goto error_io;
    }

    if (write(server, &request, sizeof(request)) < 0) {
        goto error_io;
    }

    if (read(server, &response, sizeof(response)) < 0) {
        goto error_io;
    }

    errno = response.eno;

    return response.ret;

error_io:
    return -1;
}

int patty_ax25_call_accept(int server,
                           int fd,
                           patty_ax25_addr *peer,
                           char *path,
                           size_t len) {
    enum patty_ax25_call call = PATTY_AX25_CALL_ACCEPT;

    patty_ax25_call_accept_request request = {
        fd
    };

    patty_ax25_call_accept_response response;

    memset(&response, '\0', sizeof(response));

    if (write(server, &call, sizeof(call)) < 0) {
        goto error_io;
    }

    if (write(server, &request, sizeof(request)) < 0) {
        goto error_io;
    }

    if (read(server, &response, sizeof(response)) < 0) {
        goto error_io;
    }

    if (response.ret >= 0) {
        memcpy(peer, &response.peer, sizeof(*peer));

        if (path) {
            strncpy(path, response.path, len);
        }
    }

    errno = response.eno;

    return response.ret;

error_io:
    return -1;
}

int patty_ax25_call_connect(int server,
                            int fd,
                            patty_ax25_addr *peer) {
    enum patty_ax25_call call = PATTY_AX25_CALL_CONNECT;

    patty_ax25_call_connect_request request = {
        fd
    };

    patty_ax25_call_connect_response response;

    memcpy(&request.peer, peer, sizeof(*peer));

    if (write(server, &call, sizeof(call)) < 0) {
        goto error_io;
    }

    if (write(server, &request, sizeof(request)) < 0) {
        goto error_io;
    }

    if (read(server, &response, sizeof(response)) < 0) {
        goto error_io;
    }

    errno = response.eno;

    return response.ret;

error_io:
    return -1;
}

int patty_ax25_call_close(int server,
                          int fd) {
    enum patty_ax25_call call = PATTY_AX25_CALL_CLOSE;

    patty_ax25_call_close_request request = {
        fd
    };

    patty_ax25_call_close_response response;

    if (write(server, &call, sizeof(call)) < 0) {
        goto error_io;
    }

    if (write(server, &request, sizeof(request)) < 0) {
        goto error_io;
    }

    if (read(server, &response, sizeof(response)) < 0) {
        goto error_io;
    }

    errno = response.eno;

    return response.ret;

error_io:
    return -1;
}