cvs.zerfleddert.de Git - record-dvb/blob - common.c

   1 #include <strings.h>
   2 #include <string.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <netinet/in.h>
   6 #include <arpa/inet.h>
   7 #include <netdb.h>
   8
   9 #include "common.h"
  10
  11 struct dvb_host *parse(char *urlpart, char *defport)
  12 {
  13         static struct dvb_host *dvbhost = NULL;
  14         char *pos;
  15
  16         if (!dvbhost) {
  17                 if (!(dvbhost = malloc(sizeof(struct dvb_host)))) {
  18                         perror("malloc");
  19                         exit(EXIT_FAILURE);
  20                 }
  21         }
  22
  23         bzero(dvbhost, sizeof(struct dvb_host));
  24
  25         if (!(dvbhost->hostname = strdup(urlpart))) {
  26                 perror("strdup");
  27                 exit(EXIT_FAILURE);
  28         }
  29
  30         /* Unneded, but better readablity: */
  31         dvbhost->location = NULL;
  32         dvbhost->port = NULL;
  33
  34         pos = dvbhost->hostname;
  35
  36         while(*pos != '\0' && *pos != ':' && *pos != '/')
  37                 pos++;
  38
  39         if (*pos == '/')
  40                 dvbhost->location = pos + 1;
  41
  42         if (*pos == ':')
  43                 dvbhost->port = pos + 1;
  44
  45         *pos = 0;
  46
  47         if (dvbhost->port) {
  48                 pos++;
  49
  50                 while(*pos != '\0' && *pos != '/')
  51                         pos ++;
  52
  53                 if(*pos == '/')
  54                         dvbhost->location = pos + 1;
  55
  56                 *pos = 0;
  57         }
  58
  59         if (!dvbhost->port)
  60                 dvbhost->port = strdup(defport);
  61
  62         if (!dvbhost->location)
  63                 if(!(dvbhost->location = strdup(""))) {
  64                         perror("strdup");
  65                         exit(EXIT_FAILURE);
  66                 }
  67
  68         return dvbhost;
  69 }
  70
  71 int resolve(struct dvb_host *dvbhost, struct sockaddr_in *server)
  72 {
  73         struct addrinfo *s_addrinfo, addrhints;
  74         int res;
  75
  76         bzero(&addrhints, sizeof(struct addrinfo));
  77         addrhints.ai_family = PF_INET;
  78         addrhints.ai_socktype = dvbhost->socktype;
  79
  80         if ((res = getaddrinfo(dvbhost->hostname, dvbhost->port, &addrhints, &s_addrinfo))) {
  81                 fprintf(stderr,"getaddrinfo: %s\n",gai_strerror(res));
  82                 return -1;
  83         }
  84
  85         bzero(server, sizeof(struct sockaddr_in));
  86         server->sin_family = AF_INET;
  87         server->sin_addr.s_addr = ((struct sockaddr_in*)(s_addrinfo->ai_addr))->sin_addr.s_addr;
  88         server->sin_port = ((struct sockaddr_in*)(s_addrinfo->ai_addr))->sin_port;
  89
  90         freeaddrinfo(s_addrinfo);
  91
  92         return 0;
  93 }
  94
  95 int is_url(char *string)
  96 {
  97         char *pos;
  98
  99         if (!(strlen(string)))
 100                 return 0;
 101
 102         pos = string;
 103
 104         while(*pos != ':' && *pos != 0)
 105                 pos++;
 106
 107         if (!strncmp("://", pos, 3))
 108                 return 1;
 109
 110         return 0;
 111 }