9034852c84
Security: VuXML: c4a18a12-77fc-11e5-a687-206a8a720317 Security: CVE-2015-7871 Security: CVE-2015-7855 Security: CVE-2015-7854 Security: CVE-2015-7853 Security: CVE-2015-7852 Security: CVE-2015-7851 Security: CVE-2015-7850 Security: CVE-2015-7849 Security: CVE-2015-7848 Security: CVE-2015-7701 Security: CVE-2015-7703 Security: CVE-2015-7704, CVE-2015-7705 Security: CVE-2015-7691, CVE-2015-7692, CVE-2015-7702 Security: http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner Sponsored by: Nginx, Inc.
87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
/*
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* decodenetnum - return a net number (this is crude, but careful)
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <ctype.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include "ntp.h"
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#include "ntp_stdlib.h"
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#include "ntp_assert.h"
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/*
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* decodenetnum convert text IP address and port to sockaddr_u
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*
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* Returns 0 for failure, 1 for success.
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*/
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int
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decodenetnum(
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const char *num,
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sockaddr_u *netnum
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)
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{
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struct addrinfo hints, *ai = NULL;
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int err;
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u_short port;
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const char *cp;
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const char *port_str;
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char *pp;
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char *np;
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char name[80];
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REQUIRE(num != NULL);
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if (strlen(num) >= sizeof(name)) {
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return 0;
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}
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port_str = NULL;
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if ('[' != num[0]) {
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/*
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* to distinguish IPv6 embedded colons from a port
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* specification on an IPv4 address, assume all
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* legal IPv6 addresses have at least two colons.
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*/
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pp = strchr(num, ':');
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if (NULL == pp)
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cp = num; /* no colons */
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else if (NULL != strchr(pp + 1, ':'))
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cp = num; /* two or more colons */
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else { /* one colon */
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strlcpy(name, num, sizeof(name));
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cp = name;
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pp = strchr(cp, ':');
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*pp = '\0';
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port_str = pp + 1;
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}
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} else {
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cp = num + 1;
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np = name;
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while (*cp && ']' != *cp)
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*np++ = *cp++;
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*np = 0;
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if (']' == cp[0] && ':' == cp[1] && '\0' != cp[2])
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port_str = &cp[2];
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cp = name;
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}
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ZERO(hints);
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hints.ai_flags = Z_AI_NUMERICHOST;
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err = getaddrinfo(cp, "ntp", &hints, &ai);
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if (err != 0)
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return 0;
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INSIST(ai->ai_addrlen <= sizeof(*netnum));
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ZERO(*netnum);
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memcpy(netnum, ai->ai_addr, ai->ai_addrlen);
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freeaddrinfo(ai);
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if (NULL == port_str || 1 != sscanf(port_str, "%hu", &port))
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port = NTP_PORT;
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SET_PORT(netnum, port);
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return 1;
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}
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