mirror of
https://github.com/tuxbox-neutrino/neutrino.git
synced 2025-08-26 23:13:13 +02:00
convert most char[...] configuration values to std::string
Signed-off-by: Jacek Jendrzej <crashdvb@googlemail.com>
This commit is contained in:
martii
Jacek Jendrzej
300
lib/libnet/libnet.cpp
Normal file
300
lib/libnet/libnet.cpp
Normal file
@@ -0,0 +1,300 @@
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <linux/route.h>
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#include "libnet.h"
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#if 0
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//never used
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static void scanip( char *str, unsigned char *to )
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{
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int val;
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int c;
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char *sp;
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int b=4;
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for( sp=str; b; b-- )
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{
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val=0;
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for(; (*sp != 0) && (*sp != '.'); sp++)
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{
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c = *sp - '0';
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if (( c < 0 ) || ( c>=10))
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break;
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val=(val*10)+c;
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}
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*to=val;
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to++;
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if ( !*sp )
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break;
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sp++;
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}
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}
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int netSetIP( char *dev, char *ip, char *mask, char *brdcast )
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{
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int fd;
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struct ifreq req;
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int rc=-1;
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unsigned char adr_ip[4];
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unsigned char adr_mask[4];
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unsigned char adr_brdcast[4];
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struct sockaddr_in addr;
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fd=socket(AF_INET,SOCK_DGRAM,0);
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if ( !fd )
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return -1;
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scanip( ip, adr_ip );
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scanip( mask, adr_mask );
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scanip( brdcast, adr_brdcast );
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/* init structures */
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memset(&req,0,sizeof(req));
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strcpy(req.ifr_name,dev);
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memset(&addr,0,sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = *((unsigned long *) adr_ip);
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memmove(&req.ifr_addr,&addr,sizeof(addr));
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if( ioctl(fd,SIOCSIFADDR,&req) < 0 )
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goto abbruch;
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addr.sin_addr.s_addr = *((unsigned long *) adr_mask);
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memmove(&req.ifr_addr,&addr,sizeof(addr));
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if( ioctl(fd,SIOCSIFNETMASK,&req) < 0 )
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goto abbruch;
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addr.sin_addr.s_addr = *((unsigned long *) adr_brdcast);
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memmove(&req.ifr_addr,&addr,sizeof(addr));
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if( ioctl(fd,SIOCSIFBRDADDR,&req) < 0 )
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goto abbruch;
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rc = 0;
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abbruch:
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close(fd);
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return rc;
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}
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#endif
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void netGetIP(std::string &dev, std::string &ip, std::string &mask, std::string &brdcast)
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{
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int fd;
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struct ifreq req;
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struct sockaddr_in *saddr;
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unsigned char *addr;
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ip = "";
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mask = "";
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brdcast = "";
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fd=socket(AF_INET,SOCK_DGRAM,0);
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if ( !fd )
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return;
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memset(&req,0,sizeof(req));
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strncpy(req.ifr_name, dev.c_str(), sizeof(req.ifr_name));
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saddr = (struct sockaddr_in *) &req.ifr_addr;
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addr= (unsigned char*) &saddr->sin_addr.s_addr;
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char tmp[80];
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if( ioctl(fd,SIOCGIFADDR,&req) == 0 )
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snprintf(tmp, sizeof(tmp),"%d.%d.%d.%d",addr[0],addr[1],addr[2],addr[3]);
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ip = std::string(tmp);
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if( ioctl(fd,SIOCGIFNETMASK,&req) == 0 )
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snprintf(tmp, sizeof(tmp),"%d.%d.%d.%d",addr[0],addr[1],addr[2],addr[3]);
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mask = std::string(tmp);
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if( ioctl(fd,SIOCGIFBRDADDR,&req) == 0 )
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snprintf(tmp, sizeof(tmp),"%d.%d.%d.%d",addr[0],addr[1],addr[2],addr[3]);
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brdcast = std::string(tmp);
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close(fd);
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return;
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}
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#if 0
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//never used
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void netSetDefaultRoute( char *gw )
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{
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struct rtentry re;
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struct sockaddr_in *in_addr;
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unsigned char *addr;
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int fd;
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unsigned char adr_gw[4] = {0};
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scanip( gw, adr_gw );
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memset(&re,0,sizeof(struct rtentry));
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in_addr = (struct sockaddr_in *)&re.rt_dst;
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in_addr->sin_family = AF_INET;
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in_addr = (struct sockaddr_in *)&re.rt_gateway;
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in_addr->sin_family = AF_INET;
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addr=(unsigned char*)&in_addr->sin_addr.s_addr;
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in_addr = (struct sockaddr_in *)&re.rt_genmask;
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in_addr->sin_family = AF_INET;
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fd=socket(AF_INET,SOCK_DGRAM,0);
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if ( fd < 0 )
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return;
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re.rt_flags = RTF_GATEWAY | RTF_UP;
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memmove(addr,adr_gw,4);
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ioctl(fd,SIOCADDRT,&re);
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close(fd);
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return;
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}
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#endif
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void netGetDefaultRoute( std::string &ip )
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{
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FILE *fp;
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char interface[9];
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uint32_t destination;
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uint32_t gw;
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uint8_t gateway[4];
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char zeile[256];
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ip = "";
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fp = fopen("/proc/net/route","r");
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if (fp == NULL)
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return;
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fgets(zeile,sizeof(zeile),fp); /* skip header */
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while(fgets(zeile,sizeof(zeile),fp))
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{
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destination = 1; /* in case sscanf fails */
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sscanf(zeile,"%8s %x %x", interface, &destination, &gw);
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if (destination)
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continue;
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/* big/little endian kernels have reversed entries, so this is correct */
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memcpy(gateway, &gw, 4);
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char tmp[80];
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snprintf(tmp, sizeof(tmp), "%d.%d.%d.%d", gateway[0], gateway[1], gateway[2], gateway[3]);
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ip = std::string(tmp);
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break;
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}
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fclose(fp);
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}
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#if 0
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static char dombuf[256];
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static char domis=0;
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//never used
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char *netGetDomainname( void )
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{
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if (!domis)
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getdomainname( dombuf, 256 );
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domis=1;
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return dombuf;
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}
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void netSetDomainname( char *dom )
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{
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strcpy(dombuf,dom);
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domis=1;
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setdomainname(dombuf,strlen(dombuf)+1);
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}
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#endif
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void netGetHostname( std::string &host )
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{
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host = "";
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char hostbuf[256];
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if (!gethostname(hostbuf, sizeof(hostbuf)))
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host = std::string(hostbuf);
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}
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void netSetHostname( std::string &host )
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{
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FILE * fp;
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sethostname(host.c_str(), host.length());
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fp = fopen("/etc/hostname", "w");
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if(fp != NULL) {
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fprintf(fp, "%s\n", host.c_str());
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fclose(fp);
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}
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}
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void netSetNameserver(std::string &ip)
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{
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FILE *fp;
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fp = fopen("/etc/resolv.conf","w");
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if (!fp)
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return;
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#if 0
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char *dom;
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dom=netGetDomainname();
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if (dom && strlen(dom)>2)
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fprintf(fp,"search %s\n",dom);
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#endif
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fprintf(fp, "# generated by neutrino\n");
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if (!ip.empty())
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fprintf(fp,"nameserver %s\n",ip.c_str());
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fclose(fp);
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}
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void netGetNameserver( std::string &ip )
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{
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FILE *fp;
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char zeile[256];
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char *indexLocal;
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unsigned zaehler;
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ip = "";
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fp = fopen("/etc/resolv.conf","r");
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if (!fp)
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return;
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while (fgets(zeile,sizeof(zeile),fp))
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{
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if (!strncasecmp(zeile,"nameserver",10))
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{
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char tmp[20];
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indexLocal = zeile + 10;
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while ( (*indexLocal == ' ') || (*indexLocal == '\t') )
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indexLocal++;
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zaehler = 0;
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while ( (zaehler < 15) && ( ((*indexLocal >= '0') && (*indexLocal <= '9')) || (*indexLocal == '.')))
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tmp[zaehler++] = *(indexLocal++);
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tmp[zaehler] = 0;
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ip = std::string(tmp);
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break;
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}
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}
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fclose(fp);
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}
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void netGetMacAddr(std::string &ifname, unsigned char *mac)
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{
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int fd;
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struct ifreq ifr;
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memset(mac, 0, 6);
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fd = socket(AF_INET, SOCK_DGRAM, 0);
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if(fd < 0)
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return;
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ifr.ifr_addr.sa_family = AF_INET;
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strncpy(ifr.ifr_name, ifname.c_str(), sizeof(ifr.ifr_name));
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if(ioctl(fd, SIOCGIFHWADDR, &ifr) < 0)
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return;
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memmove(mac, ifr.ifr_hwaddr.sa_data, 6);
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}
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