Attachment 1445355 Details for Bug 1579928 – getaddr.c

getaddr.c

getaddr.c (text/x-csrc), 2.10 KB, created by Mohit Agrawal on 2018-05-29 11:35:49 UTC

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Creator: Mohit Agrawal

Created: 2018-05-29 11:35:49 UTC

Size: 2.10 KB

patch

obsolete

>#include <stdio.h>
>#include <sys/types.h>
>#include <sys/socket.h>
>#include <netdb.h>
>#include <string.h>
>#include <stdlib.h>
>
>
>int
>gf_is_same_address (char *name1, char *name2)
>{
>        struct addrinfo         *addr1 = NULL;
>        struct addrinfo         *addr2 = NULL;
>        struct addrinfo         *p = NULL;
>        struct addrinfo         *q = NULL;
>        int            ret =    -1;
>        int                     gai_err = 0;
>        struct                  addrinfo hints;
>
>        memset (&hints, 0, sizeof (hints));
>        hints.ai_family = AF_UNSPEC;
>
>        gai_err = getaddrinfo(name1, NULL, &hints, &addr1);
>        if (gai_err != 0) {
>                 printf ("error in getaddrinfo: %s for name1\n", gai_strerror(gai_err));
>                 goto out;
>        }
>
>        gai_err = getaddrinfo(name2, NULL, &hints, &addr2);
>        if (gai_err != 0) {
>                printf ("error in getaddrinfo: %s for name2\n", gai_strerror(gai_err));
>                goto out;
>        }
>
>        for (p = addr1; p; p = p->ai_next) {
>                for (q = addr2; q; q = q->ai_next) {
>                        if (p->ai_addrlen != q->ai_addrlen) {
>                                continue;
>                        }
>                        if (memcmp(p->ai_addr,q->ai_addr,p->ai_addrlen)) {
>                                continue;
>                        }
>                        ret = 0;
>                        goto out;
>                }
>        }
>
>out:
>        if (addr1) {
>                freeaddrinfo(addr1);
>        }
>        if (addr2) {
>                freeaddrinfo(addr2);
>        }
>        return ret;
>
>}
>
>int main(int argc, char *argv[]) {
>   
>        if (argc != 3) {
>                printf ("Pass correct no. of argument as <host-name> <ip-addr>");
>                exit (1);
>        }
>   
>        char *hname = argv[1];
>        char *ip = argv[2];
>        int ret;
>
>        if (!gf_is_same_address (hname, ip)) {
>                printf("hostname %s is matched with ip %s addr by DNS\n", hname, ip);
>        } else {
>                printf("hostname %s does not match with ip %s addr by DNS\n", hname, ip);
>        }
>}

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Attachments on bug 1579928: 1445355