diff options
Diffstat (limited to 'src/libbbsutil/net.c')
-rw-r--r-- | src/libbbsutil/net.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/libbbsutil/net.c b/src/libbbsutil/net.c new file mode 100644 index 00000000..60208a65 --- /dev/null +++ b/src/libbbsutil/net.c @@ -0,0 +1,114 @@ +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <unistd.h> + +#include "libbbsutil.h" + +unsigned int +ipstr2int(const char *ip) +{ + unsigned int i, val = 0; + char buf[32]; + char *nil, *p; + + strlcpy(buf, ip, sizeof(buf)); + p = buf; + for (i = 0; i < 4; i++) { + nil = strchr(p, '.'); + if (nil != NULL) + *nil = 0; + val *= 256; + val += atoi(p); + if (nil != NULL) + p = nil + 1; + } + return val; +} + +int tobind(const char * host, int port) +{ + int sockfd, val = 1; + struct sockaddr_in servaddr; + + if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ) { + perror("socket()"); + exit(1); + } + setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, + (char *)&val, sizeof(val)); + bzero(&servaddr, sizeof(servaddr)); + servaddr.sin_family = AF_INET; + if (host == NULL || host[0] == 0) + servaddr.sin_addr.s_addr = htonl(INADDR_ANY); + else if (inet_aton(host, &servaddr.sin_addr) == 0) { + perror("inet_aton()"); + exit(1); + } + servaddr.sin_port = htons(port); + if( bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0 ) { + perror("bind()"); + exit(1); + } + if( listen(sockfd, 5) < 0 ) { + perror("listen()"); + exit(1); + } + + return sockfd; +} + +int toconnect(const char *host, int port) +{ + int sock; + struct sockaddr_in serv_name; + if( (sock = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){ + perror("socket"); + return -1; + } + + serv_name.sin_family = AF_INET; + serv_name.sin_addr.s_addr = inet_addr(host); + serv_name.sin_port = htons(port); + if( connect(sock, (struct sockaddr*)&serv_name, sizeof(serv_name)) < 0 ){ + close(sock); + return -1; + } + return sock; +} + +/** + * same as read(2), but read until exactly size len + */ +int toread(int fd, void *buf, int len) +{ + int l; + for( l = 0 ; len > 0 ; ) + if( (l = read(fd, buf, len)) <= 0 ) + return -1; + else{ + buf += l; + len -= l; + } + return l; +} + +/** + * same as write(2), but write until exactly size len + */ +int towrite(int fd, const void *buf, int len) +{ + int l; + for( l = 0 ; len > 0 ; ) + if( (l = write(fd, buf, len)) <= 0 ) + return -1; + else{ + buf += l; + len -= l; + } + return l; +} |