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Annotation of embedaddon/strongswan/src/libcharon/plugins/error_notify/error_notify.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2012 Martin Willi
                      3:  * Copyright (C) 2012 revosec AG
                      4:  *
                      5:  * This program is free software; you can redistribute it and/or modify it
                      6:  * under the terms of the GNU General Public License as published by the
                      7:  * Free Software Foundation; either version 2 of the License, or (at your
                      8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
                      9:  *
                     10:  * This program is distributed in the hope that it will be useful, but
                     11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
                     13:  * for more details.
                     14:  */
                     15: 
                     16: #include "error_notify_msg.h"
                     17: 
                     18: #include <stdio.h>
                     19: #include <stdlib.h>
                     20: #include <stddef.h>
                     21: #include <unistd.h>
                     22: #include <sys/stat.h>
                     23: #include <sys/socket.h>
                     24: #include <sys/un.h>
                     25: #include <errno.h>
                     26: #include <arpa/inet.h>
                     27: 
                     28: /**
                     29:  * Connect to the daemon, return FD
                     30:  */
                     31: static int make_connection()
                     32: {
                     33:        union {
                     34:                struct sockaddr_un un;
                     35:                struct sockaddr_in in;
                     36:                struct sockaddr sa;
                     37:        } addr;
                     38:        int fd, len;
                     39: 
                     40:        if (getenv("TCP_PORT"))
                     41:        {
                     42:                addr.in.sin_family = AF_INET;
                     43:                addr.in.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
                     44:                addr.in.sin_port = htons(atoi(getenv("TCP_PORT")));
                     45:                len = sizeof(addr.in);
                     46:        }
                     47:        else
                     48:        {
                     49:                addr.un.sun_family = AF_UNIX;
                     50:                strcpy(addr.un.sun_path, ERROR_NOTIFY_SOCKET);
                     51: 
                     52:                len = offsetof(struct sockaddr_un, sun_path) + strlen(addr.un.sun_path);
                     53:        }
                     54:        fd = socket(addr.sa.sa_family, SOCK_STREAM, 0);
                     55:        if (fd < 0)
                     56:        {
                     57:                fprintf(stderr, "opening socket failed: %s\n", strerror(errno));
                     58:                return -1;
                     59:        }
                     60:        if (connect(fd, &addr.sa, len) < 0)
                     61:        {
                     62:                fprintf(stderr, "connecting failed: %s\n", strerror(errno));
                     63:                close(fd);
                     64:                return -1;
                     65:        }
                     66:        return fd;
                     67: }
                     68: 
                     69: /**
                     70:  * Example of a simple notification listener
                     71:  */
                     72: int main(int argc, char *argv[])
                     73: {
                     74:        error_notify_msg_t msg;
                     75:        int s, len, total;
                     76:        void *pos;
                     77: 
                     78:        s = make_connection();
                     79:        if (s < 0)
                     80:        {
                     81:                return 1;
                     82:        }
                     83:        while (1)
                     84:        {
                     85:                total = 0;
                     86:                pos = &msg;
                     87: 
                     88:                while (total < sizeof(msg))
                     89:                {
                     90:                        len = read(s, pos, sizeof(msg) - total);
                     91:                        if (len < 0)
                     92:                        {
                     93:                                fprintf(stderr, "read failed: %s\n", strerror(errno));
                     94:                                close(s);
                     95:                                return 1;
                     96:                        }
                     97:                        total += len;
                     98:                        pos += len;
                     99:                }
                    100:                printf("%d %s %s %s %s\n",
                    101:                           ntohl(msg.type), msg.name, msg.id, msg.ip, msg.str);
                    102:        }
                    103:        close(s);
                    104:        return 0;
                    105: }